Use vendored go-swagger (#8087)

* Use vendored go-swagger

* vendor go-swagger

* revert un wanteed change

* remove un-needed GO111MODULE

* Update Makefile

Co-Authored-By: techknowlogick <matti@mdranta.net>

55 files changed, 26636 insertions, 0 deletions

diff --git a/vendor/golang.org/x/tools/AUTHORS b/vendor/golang.org/x/tools/AUTHORS
new file mode 100644
index 0000000000..15167cd746
--- /dev/null
+++ b/vendor/golang.org/x/tools/AUTHORS
@@ -0,0 +1,3 @@
+# This source code refers to The Go Authors for copyright purposes.
+# The master list of authors is in the main Go distribution,
+# visible at http://tip.golang.org/AUTHORS.
diff --git a/vendor/golang.org/x/tools/CONTRIBUTORS b/vendor/golang.org/x/tools/CONTRIBUTORS
new file mode 100644
index 0000000000..1c4577e968
--- /dev/null
+++ b/vendor/golang.org/x/tools/CONTRIBUTORS
@@ -0,0 +1,3 @@
+# This source code was written by the Go contributors.
+# The master list of contributors is in the main Go distribution,
+# visible at http://tip.golang.org/CONTRIBUTORS.
diff --git a/vendor/golang.org/x/tools/LICENSE b/vendor/golang.org/x/tools/LICENSE
new file mode 100644
index 0000000000..6a66aea5ea
--- /dev/null
+++ b/vendor/golang.org/x/tools/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2009 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/golang.org/x/tools/PATENTS b/vendor/golang.org/x/tools/PATENTS
new file mode 100644
index 0000000000..733099041f
--- /dev/null
+++ b/vendor/golang.org/x/tools/PATENTS
@@ -0,0 +1,22 @@
+Additional IP Rights Grant (Patents)
+
+"This implementation" means the copyrightable works distributed by
+Google as part of the Go project.
+
+Google hereby grants to You a perpetual, worldwide, non-exclusive,
+no-charge, royalty-free, irrevocable (except as stated in this section)
+patent license to make, have made, use, offer to sell, sell, import,
+transfer and otherwise run, modify and propagate the contents of this
+implementation of Go, where such license applies only to those patent
+claims, both currently owned or controlled by Google and acquired in
+the future, licensable by Google that are necessarily infringed by this
+implementation of Go.  This grant does not include claims that would be
+infringed only as a consequence of further modification of this
+implementation.  If you or your agent or exclusive licensee institute or
+order or agree to the institution of patent litigation against any
+entity (including a cross-claim or counterclaim in a lawsuit) alleging
+that this implementation of Go or any code incorporated within this
+implementation of Go constitutes direct or contributory patent
+infringement, or inducement of patent infringement, then any patent
+rights granted to you under this License for this implementation of Go
+shall terminate as of the date such litigation is filed.
diff --git a/vendor/golang.org/x/tools/go/ast/astutil/enclosing.go b/vendor/golang.org/x/tools/go/ast/astutil/enclosing.go
new file mode 100644
index 0000000000..6b7052b892
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/ast/astutil/enclosing.go
@@ -0,0 +1,627 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package astutil
+
+// This file defines utilities for working with source positions.
+
+import (
+	"fmt"
+	"go/ast"
+	"go/token"
+	"sort"
+)
+
+// PathEnclosingInterval returns the node that encloses the source
+// interval [start, end), and all its ancestors up to the AST root.
+//
+// The definition of "enclosing" used by this function considers
+// additional whitespace abutting a node to be enclosed by it.
+// In this example:
+//
+//              z := x + y // add them
+//                   <-A->
+//                  <----B----->
+//
+// the ast.BinaryExpr(+) node is considered to enclose interval B
+// even though its [Pos()..End()) is actually only interval A.
+// This behaviour makes user interfaces more tolerant of imperfect
+// input.
+//
+// This function treats tokens as nodes, though they are not included
+// in the result. e.g. PathEnclosingInterval("+") returns the
+// enclosing ast.BinaryExpr("x + y").
+//
+// If start==end, the 1-char interval following start is used instead.
+//
+// The 'exact' result is true if the interval contains only path[0]
+// and perhaps some adjacent whitespace.  It is false if the interval
+// overlaps multiple children of path[0], or if it contains only
+// interior whitespace of path[0].
+// In this example:
+//
+//              z := x + y // add them
+//                <--C-->     <---E-->
+//                  ^
+//                  D
+//
+// intervals C, D and E are inexact.  C is contained by the
+// z-assignment statement, because it spans three of its children (:=,
+// x, +).  So too is the 1-char interval D, because it contains only
+// interior whitespace of the assignment.  E is considered interior
+// whitespace of the BlockStmt containing the assignment.
+//
+// Precondition: [start, end) both lie within the same file as root.
+// TODO(adonovan): return (nil, false) in this case and remove precond.
+// Requires FileSet; see loader.tokenFileContainsPos.
+//
+// Postcondition: path is never nil; it always contains at least 'root'.
+//
+func PathEnclosingInterval(root *ast.File, start, end token.Pos) (path []ast.Node, exact bool) {
+	// fmt.Printf("EnclosingInterval %d %d\n", start, end) // debugging
+
+	// Precondition: node.[Pos..End) and adjoining whitespace contain [start, end).
+	var visit func(node ast.Node) bool
+	visit = func(node ast.Node) bool {
+		path = append(path, node)
+
+		nodePos := node.Pos()
+		nodeEnd := node.End()
+
+		// fmt.Printf("visit(%T, %d, %d)\n", node, nodePos, nodeEnd) // debugging
+
+		// Intersect [start, end) with interval of node.
+		if start < nodePos {
+			start = nodePos
+		}
+		if end > nodeEnd {
+			end = nodeEnd
+		}
+
+		// Find sole child that contains [start, end).
+		children := childrenOf(node)
+		l := len(children)
+		for i, child := range children {
+			// [childPos, childEnd) is unaugmented interval of child.
+			childPos := child.Pos()
+			childEnd := child.End()
+
+			// [augPos, augEnd) is whitespace-augmented interval of child.
+			augPos := childPos
+			augEnd := childEnd
+			if i > 0 {
+				augPos = children[i-1].End() // start of preceding whitespace
+			}
+			if i < l-1 {
+				nextChildPos := children[i+1].Pos()
+				// Does [start, end) lie between child and next child?
+				if start >= augEnd && end <= nextChildPos {
+					return false // inexact match
+				}
+				augEnd = nextChildPos // end of following whitespace
+			}
+
+			// fmt.Printf("\tchild %d: [%d..%d)\tcontains interval [%d..%d)?\n",
+			// 	i, augPos, augEnd, start, end) // debugging
+
+			// Does augmented child strictly contain [start, end)?
+			if augPos <= start && end <= augEnd {
+				_, isToken := child.(tokenNode)
+				return isToken || visit(child)
+			}
+
+			// Does [start, end) overlap multiple children?
+			// i.e. left-augmented child contains start
+			// but LR-augmented child does not contain end.
+			if start < childEnd && end > augEnd {
+				break
+			}
+		}
+
+		// No single child contained [start, end),
+		// so node is the result.  Is it exact?
+
+		// (It's tempting to put this condition before the
+		// child loop, but it gives the wrong result in the
+		// case where a node (e.g. ExprStmt) and its sole
+		// child have equal intervals.)
+		if start == nodePos && end == nodeEnd {
+			return true // exact match
+		}
+
+		return false // inexact: overlaps multiple children
+	}
+
+	if start > end {
+		start, end = end, start
+	}
+
+	if start < root.End() && end > root.Pos() {
+		if start == end {
+			end = start + 1 // empty interval => interval of size 1
+		}
+		exact = visit(root)
+
+		// Reverse the path:
+		for i, l := 0, len(path); i < l/2; i++ {
+			path[i], path[l-1-i] = path[l-1-i], path[i]
+		}
+	} else {
+		// Selection lies within whitespace preceding the
+		// first (or following the last) declaration in the file.
+		// The result nonetheless always includes the ast.File.
+		path = append(path, root)
+	}
+
+	return
+}
+
+// tokenNode is a dummy implementation of ast.Node for a single token.
+// They are used transiently by PathEnclosingInterval but never escape
+// this package.
+//
+type tokenNode struct {
+	pos token.Pos
+	end token.Pos
+}
+
+func (n tokenNode) Pos() token.Pos {
+	return n.pos
+}
+
+func (n tokenNode) End() token.Pos {
+	return n.end
+}
+
+func tok(pos token.Pos, len int) ast.Node {
+	return tokenNode{pos, pos + token.Pos(len)}
+}
+
+// childrenOf returns the direct non-nil children of ast.Node n.
+// It may include fake ast.Node implementations for bare tokens.
+// it is not safe to call (e.g.) ast.Walk on such nodes.
+//
+func childrenOf(n ast.Node) []ast.Node {
+	var children []ast.Node
+
+	// First add nodes for all true subtrees.
+	ast.Inspect(n, func(node ast.Node) bool {
+		if node == n { // push n
+			return true // recur
+		}
+		if node != nil { // push child
+			children = append(children, node)
+		}
+		return false // no recursion
+	})
+
+	// Then add fake Nodes for bare tokens.
+	switch n := n.(type) {
+	case *ast.ArrayType:
+		children = append(children,
+			tok(n.Lbrack, len("[")),
+			tok(n.Elt.End(), len("]")))
+
+	case *ast.AssignStmt:
+		children = append(children,
+			tok(n.TokPos, len(n.Tok.String())))
+
+	case *ast.BasicLit:
+		children = append(children,
+			tok(n.ValuePos, len(n.Value)))
+
+	case *ast.BinaryExpr:
+		children = append(children, tok(n.OpPos, len(n.Op.String())))
+
+	case *ast.BlockStmt:
+		children = append(children,
+			tok(n.Lbrace, len("{")),
+			tok(n.Rbrace, len("}")))
+
+	case *ast.BranchStmt:
+		children = append(children,
+			tok(n.TokPos, len(n.Tok.String())))
+
+	case *ast.CallExpr:
+		children = append(children,
+			tok(n.Lparen, len("(")),
+			tok(n.Rparen, len(")")))
+		if n.Ellipsis != 0 {
+			children = append(children, tok(n.Ellipsis, len("...")))
+		}
+
+	case *ast.CaseClause:
+		if n.List == nil {
+			children = append(children,
+				tok(n.Case, len("default")))
+		} else {
+			children = append(children,
+				tok(n.Case, len("case")))
+		}
+		children = append(children, tok(n.Colon, len(":")))
+
+	case *ast.ChanType:
+		switch n.Dir {
+		case ast.RECV:
+			children = append(children, tok(n.Begin, len("<-chan")))
+		case ast.SEND:
+			children = append(children, tok(n.Begin, len("chan<-")))
+		case ast.RECV | ast.SEND:
+			children = append(children, tok(n.Begin, len("chan")))
+		}
+
+	case *ast.CommClause:
+		if n.Comm == nil {
+			children = append(children,
+				tok(n.Case, len("default")))
+		} else {
+			children = append(children,
+				tok(n.Case, len("case")))
+		}
+		children = append(children, tok(n.Colon, len(":")))
+
+	case *ast.Comment:
+		// nop
+
+	case *ast.CommentGroup:
+		// nop
+
+	case *ast.CompositeLit:
+		children = append(children,
+			tok(n.Lbrace, len("{")),
+			tok(n.Rbrace, len("{")))
+
+	case *ast.DeclStmt:
+		// nop
+
+	case *ast.DeferStmt:
+		children = append(children,
+			tok(n.Defer, len("defer")))
+
+	case *ast.Ellipsis:
+		children = append(children,
+			tok(n.Ellipsis, len("...")))
+
+	case *ast.EmptyStmt:
+		// nop
+
+	case *ast.ExprStmt:
+		// nop
+
+	case *ast.Field:
+		// TODO(adonovan): Field.{Doc,Comment,Tag}?
+
+	case *ast.FieldList:
+		children = append(children,
+			tok(n.Opening, len("(")),
+			tok(n.Closing, len(")")))
+
+	case *ast.File:
+		// TODO test: Doc
+		children = append(children,
+			tok(n.Package, len("package")))
+
+	case *ast.ForStmt:
+		children = append(children,
+			tok(n.For, len("for")))
+
+	case *ast.FuncDecl:
+		// TODO(adonovan): FuncDecl.Comment?
+
+		// Uniquely, FuncDecl breaks the invariant that
+		// preorder traversal yields tokens in lexical order:
+		// in fact, FuncDecl.Recv precedes FuncDecl.Type.Func.
+		//
+		// As a workaround, we inline the case for FuncType
+		// here and order things correctly.
+		//
+		children = nil // discard ast.Walk(FuncDecl) info subtrees
+		children = append(children, tok(n.Type.Func, len("func")))
+		if n.Recv != nil {
+			children = append(children, n.Recv)
+		}
+		children = append(children, n.Name)
+		if n.Type.Params != nil {
+			children = append(children, n.Type.Params)
+		}
+		if n.Type.Results != nil {
+			children = append(children, n.Type.Results)
+		}
+		if n.Body != nil {
+			children = append(children, n.Body)
+		}
+
+	case *ast.FuncLit:
+		// nop
+
+	case *ast.FuncType:
+		if n.Func != 0 {
+			children = append(children,
+				tok(n.Func, len("func")))
+		}
+
+	case *ast.GenDecl:
+		children = append(children,
+			tok(n.TokPos, len(n.Tok.String())))
+		if n.Lparen != 0 {
+			children = append(children,
+				tok(n.Lparen, len("(")),
+				tok(n.Rparen, len(")")))
+		}
+
+	case *ast.GoStmt:
+		children = append(children,
+			tok(n.Go, len("go")))
+
+	case *ast.Ident:
+		children = append(children,
+			tok(n.NamePos, len(n.Name)))
+
+	case *ast.IfStmt:
+		children = append(children,
+			tok(n.If, len("if")))
+
+	case *ast.ImportSpec:
+		// TODO(adonovan): ImportSpec.{Doc,EndPos}?
+
+	case *ast.IncDecStmt:
+		children = append(children,
+			tok(n.TokPos, len(n.Tok.String())))
+
+	case *ast.IndexExpr:
+		children = append(children,
+			tok(n.Lbrack, len("{")),
+			tok(n.Rbrack, len("}")))
+
+	case *ast.InterfaceType:
+		children = append(children,
+			tok(n.Interface, len("interface")))
+
+	case *ast.KeyValueExpr:
+		children = append(children,
+			tok(n.Colon, len(":")))
+
+	case *ast.LabeledStmt:
+		children = append(children,
+			tok(n.Colon, len(":")))
+
+	case *ast.MapType:
+		children = append(children,
+			tok(n.Map, len("map")))
+
+	case *ast.ParenExpr:
+		children = append(children,
+			tok(n.Lparen, len("(")),
+			tok(n.Rparen, len(")")))
+
+	case *ast.RangeStmt:
+		children = append(children,
+			tok(n.For, len("for")),
+			tok(n.TokPos, len(n.Tok.String())))
+
+	case *ast.ReturnStmt:
+		children = append(children,
+			tok(n.Return, len("return")))
+
+	case *ast.SelectStmt:
+		children = append(children,
+			tok(n.Select, len("select")))
+
+	case *ast.SelectorExpr:
+		// nop
+
+	case *ast.SendStmt:
+		children = append(children,
+			tok(n.Arrow, len("<-")))
+
+	case *ast.SliceExpr:
+		children = append(children,
+			tok(n.Lbrack, len("[")),
+			tok(n.Rbrack, len("]")))
+
+	case *ast.StarExpr:
+		children = append(children, tok(n.Star, len("*")))
+
+	case *ast.StructType:
+		children = append(children, tok(n.Struct, len("struct")))
+
+	case *ast.SwitchStmt:
+		children = append(children, tok(n.Switch, len("switch")))
+
+	case *ast.TypeAssertExpr:
+		children = append(children,
+			tok(n.Lparen-1, len(".")),
+			tok(n.Lparen, len("(")),
+			tok(n.Rparen, len(")")))
+
+	case *ast.TypeSpec:
+		// TODO(adonovan): TypeSpec.{Doc,Comment}?
+
+	case *ast.TypeSwitchStmt:
+		children = append(children, tok(n.Switch, len("switch")))
+
+	case *ast.UnaryExpr:
+		children = append(children, tok(n.OpPos, len(n.Op.String())))
+
+	case *ast.ValueSpec:
+		// TODO(adonovan): ValueSpec.{Doc,Comment}?
+
+	case *ast.BadDecl, *ast.BadExpr, *ast.BadStmt:
+		// nop
+	}
+
+	// TODO(adonovan): opt: merge the logic of ast.Inspect() into
+	// the switch above so we can make interleaved callbacks for
+	// both Nodes and Tokens in the right order and avoid the need
+	// to sort.
+	sort.Sort(byPos(children))
+
+	return children
+}
+
+type byPos []ast.Node
+
+func (sl byPos) Len() int {
+	return len(sl)
+}
+func (sl byPos) Less(i, j int) bool {
+	return sl[i].Pos() < sl[j].Pos()
+}
+func (sl byPos) Swap(i, j int) {
+	sl[i], sl[j] = sl[j], sl[i]
+}
+
+// NodeDescription returns a description of the concrete type of n suitable
+// for a user interface.
+//
+// TODO(adonovan): in some cases (e.g. Field, FieldList, Ident,
+// StarExpr) we could be much more specific given the path to the AST
+// root.  Perhaps we should do that.
+//
+func NodeDescription(n ast.Node) string {
+	switch n := n.(type) {
+	case *ast.ArrayType:
+		return "array type"
+	case *ast.AssignStmt:
+		return "assignment"
+	case *ast.BadDecl:
+		return "bad declaration"
+	case *ast.BadExpr:
+		return "bad expression"
+	case *ast.BadStmt:
+		return "bad statement"
+	case *ast.BasicLit:
+		return "basic literal"
+	case *ast.BinaryExpr:
+		return fmt.Sprintf("binary %s operation", n.Op)
+	case *ast.BlockStmt:
+		return "block"
+	case *ast.BranchStmt:
+		switch n.Tok {
+		case token.BREAK:
+			return "break statement"
+		case token.CONTINUE:
+			return "continue statement"
+		case token.GOTO:
+			return "goto statement"
+		case token.FALLTHROUGH:
+			return "fall-through statement"
+		}
+	case *ast.CallExpr:
+		if len(n.Args) == 1 && !n.Ellipsis.IsValid() {
+			return "function call (or conversion)"
+		}
+		return "function call"
+	case *ast.CaseClause:
+		return "case clause"
+	case *ast.ChanType:
+		return "channel type"
+	case *ast.CommClause:
+		return "communication clause"
+	case *ast.Comment:
+		return "comment"
+	case *ast.CommentGroup:
+		return "comment group"
+	case *ast.CompositeLit:
+		return "composite literal"
+	case *ast.DeclStmt:
+		return NodeDescription(n.Decl) + " statement"
+	case *ast.DeferStmt:
+		return "defer statement"
+	case *ast.Ellipsis:
+		return "ellipsis"
+	case *ast.EmptyStmt:
+		return "empty statement"
+	case *ast.ExprStmt:
+		return "expression statement"
+	case *ast.Field:
+		// Can be any of these:
+		// struct {x, y int}  -- struct field(s)
+		// struct {T}         -- anon struct field
+		// interface {I}      -- interface embedding
+		// interface {f()}    -- interface method
+		// func (A) func(B) C -- receiver, param(s), result(s)
+		return "field/method/parameter"
+	case *ast.FieldList:
+		return "field/method/parameter list"
+	case *ast.File:
+		return "source file"
+	case *ast.ForStmt:
+		return "for loop"
+	case *ast.FuncDecl:
+		return "function declaration"
+	case *ast.FuncLit:
+		return "function literal"
+	case *ast.FuncType:
+		return "function type"
+	case *ast.GenDecl:
+		switch n.Tok {
+		case token.IMPORT:
+			return "import declaration"
+		case token.CONST:
+			return "constant declaration"
+		case token.TYPE:
+			return "type declaration"
+		case token.VAR:
+			return "variable declaration"
+		}
+	case *ast.GoStmt:
+		return "go statement"
+	case *ast.Ident:
+		return "identifier"
+	case *ast.IfStmt:
+		return "if statement"
+	case *ast.ImportSpec:
+		return "import specification"
+	case *ast.IncDecStmt:
+		if n.Tok == token.INC {
+			return "increment statement"
+		}
+		return "decrement statement"
+	case *ast.IndexExpr:
+		return "index expression"
+	case *ast.InterfaceType:
+		return "interface type"
+	case *ast.KeyValueExpr:
+		return "key/value association"
+	case *ast.LabeledStmt:
+		return "statement label"
+	case *ast.MapType:
+		return "map type"
+	case *ast.Package:
+		return "package"
+	case *ast.ParenExpr:
+		return "parenthesized " + NodeDescription(n.X)
+	case *ast.RangeStmt:
+		return "range loop"
+	case *ast.ReturnStmt:
+		return "return statement"
+	case *ast.SelectStmt:
+		return "select statement"
+	case *ast.SelectorExpr:
+		return "selector"
+	case *ast.SendStmt:
+		return "channel send"
+	case *ast.SliceExpr:
+		return "slice expression"
+	case *ast.StarExpr:
+		return "*-operation" // load/store expr or pointer type
+	case *ast.StructType:
+		return "struct type"
+	case *ast.SwitchStmt:
+		return "switch statement"
+	case *ast.TypeAssertExpr:
+		return "type assertion"
+	case *ast.TypeSpec:
+		return "type specification"
+	case *ast.TypeSwitchStmt:
+		return "type switch"
+	case *ast.UnaryExpr:
+		return fmt.Sprintf("unary %s operation", n.Op)
+	case *ast.ValueSpec:
+		return "value specification"
+
+	}
+	panic(fmt.Sprintf("unexpected node type: %T", n))
+}
diff --git a/vendor/golang.org/x/tools/go/ast/astutil/imports.go b/vendor/golang.org/x/tools/go/ast/astutil/imports.go
new file mode 100644
index 0000000000..3e4b195368
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/ast/astutil/imports.go
@@ -0,0 +1,481 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package astutil contains common utilities for working with the Go AST.
+package astutil // import "golang.org/x/tools/go/ast/astutil"
+
+import (
+	"fmt"
+	"go/ast"
+	"go/token"
+	"strconv"
+	"strings"
+)
+
+// AddImport adds the import path to the file f, if absent.
+func AddImport(fset *token.FileSet, f *ast.File, path string) (added bool) {
+	return AddNamedImport(fset, f, "", path)
+}
+
+// AddNamedImport adds the import with the given name and path to the file f, if absent.
+// If name is not empty, it is used to rename the import.
+//
+// For example, calling
+//	AddNamedImport(fset, f, "pathpkg", "path")
+// adds
+//	import pathpkg "path"
+func AddNamedImport(fset *token.FileSet, f *ast.File, name, path string) (added bool) {
+	if imports(f, name, path) {
+		return false
+	}
+
+	newImport := &ast.ImportSpec{
+		Path: &ast.BasicLit{
+			Kind:  token.STRING,
+			Value: strconv.Quote(path),
+		},
+	}
+	if name != "" {
+		newImport.Name = &ast.Ident{Name: name}
+	}
+
+	// Find an import decl to add to.
+	// The goal is to find an existing import
+	// whose import path has the longest shared
+	// prefix with path.
+	var (
+		bestMatch  = -1         // length of longest shared prefix
+		lastImport = -1         // index in f.Decls of the file's final import decl
+		impDecl    *ast.GenDecl // import decl containing the best match
+		impIndex   = -1         // spec index in impDecl containing the best match
+
+		isThirdPartyPath = isThirdParty(path)
+	)
+	for i, decl := range f.Decls {
+		gen, ok := decl.(*ast.GenDecl)
+		if ok && gen.Tok == token.IMPORT {
+			lastImport = i
+			// Do not add to import "C", to avoid disrupting the
+			// association with its doc comment, breaking cgo.
+			if declImports(gen, "C") {
+				continue
+			}
+
+			// Match an empty import decl if that's all that is available.
+			if len(gen.Specs) == 0 && bestMatch == -1 {
+				impDecl = gen
+			}
+
+			// Compute longest shared prefix with imports in this group and find best
+			// matched import spec.
+			// 1. Always prefer import spec with longest shared prefix.
+			// 2. While match length is 0,
+			// - for stdlib package: prefer first import spec.
+			// - for third party package: prefer first third party import spec.
+			// We cannot use last import spec as best match for third party package
+			// because grouped imports are usually placed last by goimports -local
+			// flag.
+			// See issue #19190.
+			seenAnyThirdParty := false
+			for j, spec := range gen.Specs {
+				impspec := spec.(*ast.ImportSpec)
+				p := importPath(impspec)
+				n := matchLen(p, path)
+				if n > bestMatch || (bestMatch == 0 && !seenAnyThirdParty && isThirdPartyPath) {
+					bestMatch = n
+					impDecl = gen
+					impIndex = j
+				}
+				seenAnyThirdParty = seenAnyThirdParty || isThirdParty(p)
+			}
+		}
+	}
+
+	// If no import decl found, add one after the last import.
+	if impDecl == nil {
+		impDecl = &ast.GenDecl{
+			Tok: token.IMPORT,
+		}
+		if lastImport >= 0 {
+			impDecl.TokPos = f.Decls[lastImport].End()
+		} else {
+			// There are no existing imports.
+			// Our new import, preceded by a blank line,  goes after the package declaration
+			// and after the comment, if any, that starts on the same line as the
+			// package declaration.
+			impDecl.TokPos = f.Package
+
+			file := fset.File(f.Package)
+			pkgLine := file.Line(f.Package)
+			for _, c := range f.Comments {
+				if file.Line(c.Pos()) > pkgLine {
+					break
+				}
+				// +2 for a blank line
+				impDecl.TokPos = c.End() + 2
+			}
+		}
+		f.Decls = append(f.Decls, nil)
+		copy(f.Decls[lastImport+2:], f.Decls[lastImport+1:])
+		f.Decls[lastImport+1] = impDecl
+	}
+
+	// Insert new import at insertAt.
+	insertAt := 0
+	if impIndex >= 0 {
+		// insert after the found import
+		insertAt = impIndex + 1
+	}
+	impDecl.Specs = append(impDecl.Specs, nil)
+	copy(impDecl.Specs[insertAt+1:], impDecl.Specs[insertAt:])
+	impDecl.Specs[insertAt] = newImport
+	pos := impDecl.Pos()
+	if insertAt > 0 {
+		// If there is a comment after an existing import, preserve the comment
+		// position by adding the new import after the comment.
+		if spec, ok := impDecl.Specs[insertAt-1].(*ast.ImportSpec); ok && spec.Comment != nil {
+			pos = spec.Comment.End()
+		} else {
+			// Assign same position as the previous import,
+			// so that the sorter sees it as being in the same block.
+			pos = impDecl.Specs[insertAt-1].Pos()
+		}
+	}
+	if newImport.Name != nil {
+		newImport.Name.NamePos = pos
+	}
+	newImport.Path.ValuePos = pos
+	newImport.EndPos = pos
+
+	// Clean up parens. impDecl contains at least one spec.
+	if len(impDecl.Specs) == 1 {
+		// Remove unneeded parens.
+		impDecl.Lparen = token.NoPos
+	} else if !impDecl.Lparen.IsValid() {
+		// impDecl needs parens added.
+		impDecl.Lparen = impDecl.Specs[0].Pos()
+	}
+
+	f.Imports = append(f.Imports, newImport)
+
+	if len(f.Decls) <= 1 {
+		return true
+	}
+
+	// Merge all the import declarations into the first one.
+	var first *ast.GenDecl
+	for i := 0; i < len(f.Decls); i++ {
+		decl := f.Decls[i]
+		gen, ok := decl.(*ast.GenDecl)
+		if !ok || gen.Tok != token.IMPORT || declImports(gen, "C") {
+			continue
+		}
+		if first == nil {
+			first = gen
+			continue // Don't touch the first one.
+		}
+		// We now know there is more than one package in this import
+		// declaration. Ensure that it ends up parenthesized.
+		first.Lparen = first.Pos()
+		// Move the imports of the other import declaration to the first one.
+		for _, spec := range gen.Specs {
+			spec.(*ast.ImportSpec).Path.ValuePos = first.Pos()
+			first.Specs = append(first.Specs, spec)
+		}
+		f.Decls = append(f.Decls[:i], f.Decls[i+1:]...)
+		i--
+	}
+
+	return true
+}
+
+func isThirdParty(importPath string) bool {
+	// Third party package import path usually contains "." (".com", ".org", ...)
+	// This logic is taken from golang.org/x/tools/imports package.
+	return strings.Contains(importPath, ".")
+}
+
+// DeleteImport deletes the import path from the file f, if present.
+// If there are duplicate import declarations, all matching ones are deleted.
+func DeleteImport(fset *token.FileSet, f *ast.File, path string) (deleted bool) {
+	return DeleteNamedImport(fset, f, "", path)
+}
+
+// DeleteNamedImport deletes the import with the given name and path from the file f, if present.
+// If there are duplicate import declarations, all matching ones are deleted.
+func DeleteNamedImport(fset *token.FileSet, f *ast.File, name, path string) (deleted bool) {
+	var delspecs []*ast.ImportSpec
+	var delcomments []*ast.CommentGroup
+
+	// Find the import nodes that import path, if any.
+	for i := 0; i < len(f.Decls); i++ {
+		decl := f.Decls[i]
+		gen, ok := decl.(*ast.GenDecl)
+		if !ok || gen.Tok != token.IMPORT {
+			continue
+		}
+		for j := 0; j < len(gen.Specs); j++ {
+			spec := gen.Specs[j]
+			impspec := spec.(*ast.ImportSpec)
+			if importName(impspec) != name || importPath(impspec) != path {
+				continue
+			}
+
+			// We found an import spec that imports path.
+			// Delete it.
+			delspecs = append(delspecs, impspec)
+			deleted = true
+			copy(gen.Specs[j:], gen.Specs[j+1:])
+			gen.Specs = gen.Specs[:len(gen.Specs)-1]
+
+			// If this was the last import spec in this decl,
+			// delete the decl, too.
+			if len(gen.Specs) == 0 {
+				copy(f.Decls[i:], f.Decls[i+1:])
+				f.Decls = f.Decls[:len(f.Decls)-1]
+				i--
+				break
+			} else if len(gen.Specs) == 1 {
+				if impspec.Doc != nil {
+					delcomments = append(delcomments, impspec.Doc)
+				}
+				if impspec.Comment != nil {
+					delcomments = append(delcomments, impspec.Comment)
+				}
+				for _, cg := range f.Comments {
+					// Found comment on the same line as the import spec.
+					if cg.End() < impspec.Pos() && fset.Position(cg.End()).Line == fset.Position(impspec.Pos()).Line {
+						delcomments = append(delcomments, cg)
+						break
+					}
+				}
+
+				spec := gen.Specs[0].(*ast.ImportSpec)
+
+				// Move the documentation right after the import decl.
+				if spec.Doc != nil {
+					for fset.Position(gen.TokPos).Line+1 < fset.Position(spec.Doc.Pos()).Line {
+						fset.File(gen.TokPos).MergeLine(fset.Position(gen.TokPos).Line)
+					}
+				}
+				for _, cg := range f.Comments {
+					if cg.End() < spec.Pos() && fset.Position(cg.End()).Line == fset.Position(spec.Pos()).Line {
+						for fset.Position(gen.TokPos).Line+1 < fset.Position(spec.Pos()).Line {
+							fset.File(gen.TokPos).MergeLine(fset.Position(gen.TokPos).Line)
+						}
+						break
+					}
+				}
+			}
+			if j > 0 {
+				lastImpspec := gen.Specs[j-1].(*ast.ImportSpec)
+				lastLine := fset.Position(lastImpspec.Path.ValuePos).Line
+				line := fset.Position(impspec.Path.ValuePos).Line
+
+				// We deleted an entry but now there may be
+				// a blank line-sized hole where the import was.
+				if line-lastLine > 1 {
+					// There was a blank line immediately preceding the deleted import,
+					// so there's no need to close the hole.
+					// Do nothing.
+				} else if line != fset.File(gen.Rparen).LineCount() {
+					// There was no blank line. Close the hole.
+					fset.File(gen.Rparen).MergeLine(line)
+				}
+			}
+			j--
+		}
+	}
+
+	// Delete imports from f.Imports.
+	for i := 0; i < len(f.Imports); i++ {
+		imp := f.Imports[i]
+		for j, del := range delspecs {
+			if imp == del {
+				copy(f.Imports[i:], f.Imports[i+1:])
+				f.Imports = f.Imports[:len(f.Imports)-1]
+				copy(delspecs[j:], delspecs[j+1:])
+				delspecs = delspecs[:len(delspecs)-1]
+				i--
+				break
+			}
+		}
+	}
+
+	// Delete comments from f.Comments.
+	for i := 0; i < len(f.Comments); i++ {
+		cg := f.Comments[i]
+		for j, del := range delcomments {
+			if cg == del {
+				copy(f.Comments[i:], f.Comments[i+1:])
+				f.Comments = f.Comments[:len(f.Comments)-1]
+				copy(delcomments[j:], delcomments[j+1:])
+				delcomments = delcomments[:len(delcomments)-1]
+				i--
+				break
+			}
+		}
+	}
+
+	if len(delspecs) > 0 {
+		panic(fmt.Sprintf("deleted specs from Decls but not Imports: %v", delspecs))
+	}
+
+	return
+}
+
+// RewriteImport rewrites any import of path oldPath to path newPath.
+func RewriteImport(fset *token.FileSet, f *ast.File, oldPath, newPath string) (rewrote bool) {
+	for _, imp := range f.Imports {
+		if importPath(imp) == oldPath {
+			rewrote = true
+			// record old End, because the default is to compute
+			// it using the length of imp.Path.Value.
+			imp.EndPos = imp.End()
+			imp.Path.Value = strconv.Quote(newPath)
+		}
+	}
+	return
+}
+
+// UsesImport reports whether a given import is used.
+func UsesImport(f *ast.File, path string) (used bool) {
+	spec := importSpec(f, path)
+	if spec == nil {
+		return
+	}
+
+	name := spec.Name.String()
+	switch name {
+	case "<nil>":
+		// If the package name is not explicitly specified,
+		// make an educated guess. This is not guaranteed to be correct.
+		lastSlash := strings.LastIndex(path, "/")
+		if lastSlash == -1 {
+			name = path
+		} else {
+			name = path[lastSlash+1:]
+		}
+	case "_", ".":
+		// Not sure if this import is used - err on the side of caution.
+		return true
+	}
+
+	ast.Walk(visitFn(func(n ast.Node) {
+		sel, ok := n.(*ast.SelectorExpr)
+		if ok && isTopName(sel.X, name) {
+			used = true
+		}
+	}), f)
+
+	return
+}
+
+type visitFn func(node ast.Node)
+
+func (fn visitFn) Visit(node ast.Node) ast.Visitor {
+	fn(node)
+	return fn
+}
+
+// imports reports whether f has an import with the specified name and path.
+func imports(f *ast.File, name, path string) bool {
+	for _, s := range f.Imports {
+		if importName(s) == name && importPath(s) == path {
+			return true
+		}
+	}
+	return false
+}
+
+// importSpec returns the import spec if f imports path,
+// or nil otherwise.
+func importSpec(f *ast.File, path string) *ast.ImportSpec {
+	for _, s := range f.Imports {
+		if importPath(s) == path {
+			return s
+		}
+	}
+	return nil
+}
+
+// importName returns the name of s,
+// or "" if the import is not named.
+func importName(s *ast.ImportSpec) string {
+	if s.Name == nil {
+		return ""
+	}
+	return s.Name.Name
+}
+
+// importPath returns the unquoted import path of s,
+// or "" if the path is not properly quoted.
+func importPath(s *ast.ImportSpec) string {
+	t, err := strconv.Unquote(s.Path.Value)
+	if err != nil {
+		return ""
+	}
+	return t
+}
+
+// declImports reports whether gen contains an import of path.
+func declImports(gen *ast.GenDecl, path string) bool {
+	if gen.Tok != token.IMPORT {
+		return false
+	}
+	for _, spec := range gen.Specs {
+		impspec := spec.(*ast.ImportSpec)
+		if importPath(impspec) == path {
+			return true
+		}
+	}
+	return false
+}
+
+// matchLen returns the length of the longest path segment prefix shared by x and y.
+func matchLen(x, y string) int {
+	n := 0
+	for i := 0; i < len(x) && i < len(y) && x[i] == y[i]; i++ {
+		if x[i] == '/' {
+			n++
+		}
+	}
+	return n
+}
+
+// isTopName returns true if n is a top-level unresolved identifier with the given name.
+func isTopName(n ast.Expr, name string) bool {
+	id, ok := n.(*ast.Ident)
+	return ok && id.Name == name && id.Obj == nil
+}
+
+// Imports returns the file imports grouped by paragraph.
+func Imports(fset *token.FileSet, f *ast.File) [][]*ast.ImportSpec {
+	var groups [][]*ast.ImportSpec
+
+	for _, decl := range f.Decls {
+		genDecl, ok := decl.(*ast.GenDecl)
+		if !ok || genDecl.Tok != token.IMPORT {
+			break
+		}
+
+		group := []*ast.ImportSpec{}
+
+		var lastLine int
+		for _, spec := range genDecl.Specs {
+			importSpec := spec.(*ast.ImportSpec)
+			pos := importSpec.Path.ValuePos
+			line := fset.Position(pos).Line
+			if lastLine > 0 && pos > 0 && line-lastLine > 1 {
+				groups = append(groups, group)
+				group = []*ast.ImportSpec{}
+			}
+			group = append(group, importSpec)
+			lastLine = line
+		}
+		groups = append(groups, group)
+	}
+
+	return groups
+}
diff --git a/vendor/golang.org/x/tools/go/ast/astutil/rewrite.go b/vendor/golang.org/x/tools/go/ast/astutil/rewrite.go
new file mode 100644
index 0000000000..cf72ea990b
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/ast/astutil/rewrite.go
@@ -0,0 +1,477 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package astutil
+
+import (
+	"fmt"
+	"go/ast"
+	"reflect"
+	"sort"
+)
+
+// An ApplyFunc is invoked by Apply for each node n, even if n is nil,
+// before and/or after the node's children, using a Cursor describing
+// the current node and providing operations on it.
+//
+// The return value of ApplyFunc controls the syntax tree traversal.
+// See Apply for details.
+type ApplyFunc func(*Cursor) bool
+
+// Apply traverses a syntax tree recursively, starting with root,
+// and calling pre and post for each node as described below.
+// Apply returns the syntax tree, possibly modified.
+//
+// If pre is not nil, it is called for each node before the node's
+// children are traversed (pre-order). If pre returns false, no
+// children are traversed, and post is not called for that node.
+//
+// If post is not nil, and a prior call of pre didn't return false,
+// post is called for each node after its children are traversed
+// (post-order). If post returns false, traversal is terminated and
+// Apply returns immediately.
+//
+// Only fields that refer to AST nodes are considered children;
+// i.e., token.Pos, Scopes, Objects, and fields of basic types
+// (strings, etc.) are ignored.
+//
+// Children are traversed in the order in which they appear in the
+// respective node's struct definition. A package's files are
+// traversed in the filenames' alphabetical order.
+//
+func Apply(root ast.Node, pre, post ApplyFunc) (result ast.Node) {
+	parent := &struct{ ast.Node }{root}
+	defer func() {
+		if r := recover(); r != nil && r != abort {
+			panic(r)
+		}
+		result = parent.Node
+	}()
+	a := &application{pre: pre, post: post}
+	a.apply(parent, "Node", nil, root)
+	return
+}
+
+var abort = new(int) // singleton, to signal termination of Apply
+
+// A Cursor describes a node encountered during Apply.
+// Information about the node and its parent is available
+// from the Node, Parent, Name, and Index methods.
+//
+// If p is a variable of type and value of the current parent node
+// c.Parent(), and f is the field identifier with name c.Name(),
+// the following invariants hold:
+//
+//   p.f            == c.Node()  if c.Index() <  0
+//   p.f[c.Index()] == c.Node()  if c.Index() >= 0
+//
+// The methods Replace, Delete, InsertBefore, and InsertAfter
+// can be used to change the AST without disrupting Apply.
+type Cursor struct {
+	parent ast.Node
+	name   string
+	iter   *iterator // valid if non-nil
+	node   ast.Node
+}
+
+// Node returns the current Node.
+func (c *Cursor) Node() ast.Node { return c.node }
+
+// Parent returns the parent of the current Node.
+func (c *Cursor) Parent() ast.Node { return c.parent }
+
+// Name returns the name of the parent Node field that contains the current Node.
+// If the parent is a *ast.Package and the current Node is a *ast.File, Name returns
+// the filename for the current Node.
+func (c *Cursor) Name() string { return c.name }
+
+// Index reports the index >= 0 of the current Node in the slice of Nodes that
+// contains it, or a value < 0 if the current Node is not part of a slice.
+// The index of the current node changes if InsertBefore is called while
+// processing the current node.
+func (c *Cursor) Index() int {
+	if c.iter != nil {
+		return c.iter.index
+	}
+	return -1
+}
+
+// field returns the current node's parent field value.
+func (c *Cursor) field() reflect.Value {
+	return reflect.Indirect(reflect.ValueOf(c.parent)).FieldByName(c.name)
+}
+
+// Replace replaces the current Node with n.
+// The replacement node is not walked by Apply.
+func (c *Cursor) Replace(n ast.Node) {
+	if _, ok := c.node.(*ast.File); ok {
+		file, ok := n.(*ast.File)
+		if !ok {
+			panic("attempt to replace *ast.File with non-*ast.File")
+		}
+		c.parent.(*ast.Package).Files[c.name] = file
+		return
+	}
+
+	v := c.field()
+	if i := c.Index(); i >= 0 {
+		v = v.Index(i)
+	}
+	v.Set(reflect.ValueOf(n))
+}
+
+// Delete deletes the current Node from its containing slice.
+// If the current Node is not part of a slice, Delete panics.
+// As a special case, if the current node is a package file,
+// Delete removes it from the package's Files map.
+func (c *Cursor) Delete() {
+	if _, ok := c.node.(*ast.File); ok {
+		delete(c.parent.(*ast.Package).Files, c.name)
+		return
+	}
+
+	i := c.Index()
+	if i < 0 {
+		panic("Delete node not contained in slice")
+	}
+	v := c.field()
+	l := v.Len()
+	reflect.Copy(v.Slice(i, l), v.Slice(i+1, l))
+	v.Index(l - 1).Set(reflect.Zero(v.Type().Elem()))
+	v.SetLen(l - 1)
+	c.iter.step--
+}
+
+// InsertAfter inserts n after the current Node in its containing slice.
+// If the current Node is not part of a slice, InsertAfter panics.
+// Apply does not walk n.
+func (c *Cursor) InsertAfter(n ast.Node) {
+	i := c.Index()
+	if i < 0 {
+		panic("InsertAfter node not contained in slice")
+	}
+	v := c.field()
+	v.Set(reflect.Append(v, reflect.Zero(v.Type().Elem())))
+	l := v.Len()
+	reflect.Copy(v.Slice(i+2, l), v.Slice(i+1, l))
+	v.Index(i + 1).Set(reflect.ValueOf(n))
+	c.iter.step++
+}
+
+// InsertBefore inserts n before the current Node in its containing slice.
+// If the current Node is not part of a slice, InsertBefore panics.
+// Apply will not walk n.
+func (c *Cursor) InsertBefore(n ast.Node) {
+	i := c.Index()
+	if i < 0 {
+		panic("InsertBefore node not contained in slice")
+	}
+	v := c.field()
+	v.Set(reflect.Append(v, reflect.Zero(v.Type().Elem())))
+	l := v.Len()
+	reflect.Copy(v.Slice(i+1, l), v.Slice(i, l))
+	v.Index(i).Set(reflect.ValueOf(n))
+	c.iter.index++
+}
+
+// application carries all the shared data so we can pass it around cheaply.
+type application struct {
+	pre, post ApplyFunc
+	cursor    Cursor
+	iter      iterator
+}
+
+func (a *application) apply(parent ast.Node, name string, iter *iterator, n ast.Node) {
+	// convert typed nil into untyped nil
+	if v := reflect.ValueOf(n); v.Kind() == reflect.Ptr && v.IsNil() {
+		n = nil
+	}
+
+	// avoid heap-allocating a new cursor for each apply call; reuse a.cursor instead
+	saved := a.cursor
+	a.cursor.parent = parent
+	a.cursor.name = name
+	a.cursor.iter = iter
+	a.cursor.node = n
+
+	if a.pre != nil && !a.pre(&a.cursor) {
+		a.cursor = saved
+		return
+	}
+
+	// walk children
+	// (the order of the cases matches the order of the corresponding node types in go/ast)
+	switch n := n.(type) {
+	case nil:
+		// nothing to do
+
+	// Comments and fields
+	case *ast.Comment:
+		// nothing to do
+
+	case *ast.CommentGroup:
+		if n != nil {
+			a.applyList(n, "List")
+		}
+
+	case *ast.Field:
+		a.apply(n, "Doc", nil, n.Doc)
+		a.applyList(n, "Names")
+		a.apply(n, "Type", nil, n.Type)
+		a.apply(n, "Tag", nil, n.Tag)
+		a.apply(n, "Comment", nil, n.Comment)
+
+	case *ast.FieldList:
+		a.applyList(n, "List")
+
+	// Expressions
+	case *ast.BadExpr, *ast.Ident, *ast.BasicLit:
+		// nothing to do
+
+	case *ast.Ellipsis:
+		a.apply(n, "Elt", nil, n.Elt)
+
+	case *ast.FuncLit:
+		a.apply(n, "Type", nil, n.Type)
+		a.apply(n, "Body", nil, n.Body)
+
+	case *ast.CompositeLit:
+		a.apply(n, "Type", nil, n.Type)
+		a.applyList(n, "Elts")
+
+	case *ast.ParenExpr:
+		a.apply(n, "X", nil, n.X)
+
+	case *ast.SelectorExpr:
+		a.apply(n, "X", nil, n.X)
+		a.apply(n, "Sel", nil, n.Sel)
+
+	case *ast.IndexExpr:
+		a.apply(n, "X", nil, n.X)
+		a.apply(n, "Index", nil, n.Index)
+
+	case *ast.SliceExpr:
+		a.apply(n, "X", nil, n.X)
+		a.apply(n, "Low", nil, n.Low)
+		a.apply(n, "High", nil, n.High)
+		a.apply(n, "Max", nil, n.Max)
+
+	case *ast.TypeAssertExpr:
+		a.apply(n, "X", nil, n.X)
+		a.apply(n, "Type", nil, n.Type)
+
+	case *ast.CallExpr:
+		a.apply(n, "Fun", nil, n.Fun)
+		a.applyList(n, "Args")
+
+	case *ast.StarExpr:
+		a.apply(n, "X", nil, n.X)
+
+	case *ast.UnaryExpr:
+		a.apply(n, "X", nil, n.X)
+
+	case *ast.BinaryExpr:
+		a.apply(n, "X", nil, n.X)
+		a.apply(n, "Y", nil, n.Y)
+
+	case *ast.KeyValueExpr:
+		a.apply(n, "Key", nil, n.Key)
+		a.apply(n, "Value", nil, n.Value)
+
+	// Types
+	case *ast.ArrayType:
+		a.apply(n, "Len", nil, n.Len)
+		a.apply(n, "Elt", nil, n.Elt)
+
+	case *ast.StructType:
+		a.apply(n, "Fields", nil, n.Fields)
+
+	case *ast.FuncType:
+		a.apply(n, "Params", nil, n.Params)
+		a.apply(n, "Results", nil, n.Results)
+
+	case *ast.InterfaceType:
+		a.apply(n, "Methods", nil, n.Methods)
+
+	case *ast.MapType:
+		a.apply(n, "Key", nil, n.Key)
+		a.apply(n, "Value", nil, n.Value)
+
+	case *ast.ChanType:
+		a.apply(n, "Value", nil, n.Value)
+
+	// Statements
+	case *ast.BadStmt:
+		// nothing to do
+
+	case *ast.DeclStmt:
+		a.apply(n, "Decl", nil, n.Decl)
+
+	case *ast.EmptyStmt:
+		// nothing to do
+
+	case *ast.LabeledStmt:
+		a.apply(n, "Label", nil, n.Label)
+		a.apply(n, "Stmt", nil, n.Stmt)
+
+	case *ast.ExprStmt:
+		a.apply(n, "X", nil, n.X)
+
+	case *ast.SendStmt:
+		a.apply(n, "Chan", nil, n.Chan)
+		a.apply(n, "Value", nil, n.Value)
+
+	case *ast.IncDecStmt:
+		a.apply(n, "X", nil, n.X)
+
+	case *ast.AssignStmt:
+		a.applyList(n, "Lhs")
+		a.applyList(n, "Rhs")
+
+	case *ast.GoStmt:
+		a.apply(n, "Call", nil, n.Call)
+
+	case *ast.DeferStmt:
+		a.apply(n, "Call", nil, n.Call)
+
+	case *ast.ReturnStmt:
+		a.applyList(n, "Results")
+
+	case *ast.BranchStmt:
+		a.apply(n, "Label", nil, n.Label)
+
+	case *ast.BlockStmt:
+		a.applyList(n, "List")
+
+	case *ast.IfStmt:
+		a.apply(n, "Init", nil, n.Init)
+		a.apply(n, "Cond", nil, n.Cond)
+		a.apply(n, "Body", nil, n.Body)
+		a.apply(n, "Else", nil, n.Else)
+
+	case *ast.CaseClause:
+		a.applyList(n, "List")
+		a.applyList(n, "Body")
+
+	case *ast.SwitchStmt:
+		a.apply(n, "Init", nil, n.Init)
+		a.apply(n, "Tag", nil, n.Tag)
+		a.apply(n, "Body", nil, n.Body)
+
+	case *ast.TypeSwitchStmt:
+		a.apply(n, "Init", nil, n.Init)
+		a.apply(n, "Assign", nil, n.Assign)
+		a.apply(n, "Body", nil, n.Body)
+
+	case *ast.CommClause:
+		a.apply(n, "Comm", nil, n.Comm)
+		a.applyList(n, "Body")
+
+	case *ast.SelectStmt:
+		a.apply(n, "Body", nil, n.Body)
+
+	case *ast.ForStmt:
+		a.apply(n, "Init", nil, n.Init)
+		a.apply(n, "Cond", nil, n.Cond)
+		a.apply(n, "Post", nil, n.Post)
+		a.apply(n, "Body", nil, n.Body)
+
+	case *ast.RangeStmt:
+		a.apply(n, "Key", nil, n.Key)
+		a.apply(n, "Value", nil, n.Value)
+		a.apply(n, "X", nil, n.X)
+		a.apply(n, "Body", nil, n.Body)
+
+	// Declarations
+	case *ast.ImportSpec:
+		a.apply(n, "Doc", nil, n.Doc)
+		a.apply(n, "Name", nil, n.Name)
+		a.apply(n, "Path", nil, n.Path)
+		a.apply(n, "Comment", nil, n.Comment)
+
+	case *ast.ValueSpec:
+		a.apply(n, "Doc", nil, n.Doc)
+		a.applyList(n, "Names")
+		a.apply(n, "Type", nil, n.Type)
+		a.applyList(n, "Values")
+		a.apply(n, "Comment", nil, n.Comment)
+
+	case *ast.TypeSpec:
+		a.apply(n, "Doc", nil, n.Doc)
+		a.apply(n, "Name", nil, n.Name)
+		a.apply(n, "Type", nil, n.Type)
+		a.apply(n, "Comment", nil, n.Comment)
+
+	case *ast.BadDecl:
+		// nothing to do
+
+	case *ast.GenDecl:
+		a.apply(n, "Doc", nil, n.Doc)
+		a.applyList(n, "Specs")
+
+	case *ast.FuncDecl:
+		a.apply(n, "Doc", nil, n.Doc)
+		a.apply(n, "Recv", nil, n.Recv)
+		a.apply(n, "Name", nil, n.Name)
+		a.apply(n, "Type", nil, n.Type)
+		a.apply(n, "Body", nil, n.Body)
+
+	// Files and packages
+	case *ast.File:
+		a.apply(n, "Doc", nil, n.Doc)
+		a.apply(n, "Name", nil, n.Name)
+		a.applyList(n, "Decls")
+		// Don't walk n.Comments; they have either been walked already if
+		// they are Doc comments, or they can be easily walked explicitly.
+
+	case *ast.Package:
+		// collect and sort names for reproducible behavior
+		var names []string
+		for name := range n.Files {
+			names = append(names, name)
+		}
+		sort.Strings(names)
+		for _, name := range names {
+			a.apply(n, name, nil, n.Files[name])
+		}
+
+	default:
+		panic(fmt.Sprintf("Apply: unexpected node type %T", n))
+	}
+
+	if a.post != nil && !a.post(&a.cursor) {
+		panic(abort)
+	}
+
+	a.cursor = saved
+}
+
+// An iterator controls iteration over a slice of nodes.
+type iterator struct {
+	index, step int
+}
+
+func (a *application) applyList(parent ast.Node, name string) {
+	// avoid heap-allocating a new iterator for each applyList call; reuse a.iter instead
+	saved := a.iter
+	a.iter.index = 0
+	for {
+		// must reload parent.name each time, since cursor modifications might change it
+		v := reflect.Indirect(reflect.ValueOf(parent)).FieldByName(name)
+		if a.iter.index >= v.Len() {
+			break
+		}
+
+		// element x may be nil in a bad AST - be cautious
+		var x ast.Node
+		if e := v.Index(a.iter.index); e.IsValid() {
+			x = e.Interface().(ast.Node)
+		}
+
+		a.iter.step = 1
+		a.apply(parent, name, &a.iter, x)
+		a.iter.index += a.iter.step
+	}
+	a.iter = saved
+}
diff --git a/vendor/golang.org/x/tools/go/ast/astutil/util.go b/vendor/golang.org/x/tools/go/ast/astutil/util.go
new file mode 100644
index 0000000000..7630629824
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/ast/astutil/util.go
@@ -0,0 +1,14 @@
+package astutil
+
+import "go/ast"
+
+// Unparen returns e with any enclosing parentheses stripped.
+func Unparen(e ast.Expr) ast.Expr {
+	for {
+		p, ok := e.(*ast.ParenExpr)
+		if !ok {
+			return e
+		}
+		e = p.X
+	}
+}
diff --git a/vendor/golang.org/x/tools/go/buildutil/allpackages.go b/vendor/golang.org/x/tools/go/buildutil/allpackages.go
new file mode 100644
index 0000000000..c0cb03e7be
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/buildutil/allpackages.go
@@ -0,0 +1,198 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package buildutil provides utilities related to the go/build
+// package in the standard library.
+//
+// All I/O is done via the build.Context file system interface, which must
+// be concurrency-safe.
+package buildutil // import "golang.org/x/tools/go/buildutil"
+
+import (
+	"go/build"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+	"sync"
+)
+
+// AllPackages returns the package path of each Go package in any source
+// directory of the specified build context (e.g. $GOROOT or an element
+// of $GOPATH).  Errors are ignored.  The results are sorted.
+// All package paths are canonical, and thus may contain "/vendor/".
+//
+// The result may include import paths for directories that contain no
+// *.go files, such as "archive" (in $GOROOT/src).
+//
+// All I/O is done via the build.Context file system interface,
+// which must be concurrency-safe.
+//
+func AllPackages(ctxt *build.Context) []string {
+	var list []string
+	ForEachPackage(ctxt, func(pkg string, _ error) {
+		list = append(list, pkg)
+	})
+	sort.Strings(list)
+	return list
+}
+
+// ForEachPackage calls the found function with the package path of
+// each Go package it finds in any source directory of the specified
+// build context (e.g. $GOROOT or an element of $GOPATH).
+// All package paths are canonical, and thus may contain "/vendor/".
+//
+// If the package directory exists but could not be read, the second
+// argument to the found function provides the error.
+//
+// All I/O is done via the build.Context file system interface,
+// which must be concurrency-safe.
+//
+func ForEachPackage(ctxt *build.Context, found func(importPath string, err error)) {
+	ch := make(chan item)
+
+	var wg sync.WaitGroup
+	for _, root := range ctxt.SrcDirs() {
+		root := root
+		wg.Add(1)
+		go func() {
+			allPackages(ctxt, root, ch)
+			wg.Done()
+		}()
+	}
+	go func() {
+		wg.Wait()
+		close(ch)
+	}()
+
+	// All calls to found occur in the caller's goroutine.
+	for i := range ch {
+		found(i.importPath, i.err)
+	}
+}
+
+type item struct {
+	importPath string
+	err        error // (optional)
+}
+
+// We use a process-wide counting semaphore to limit
+// the number of parallel calls to ReadDir.
+var ioLimit = make(chan bool, 20)
+
+func allPackages(ctxt *build.Context, root string, ch chan<- item) {
+	root = filepath.Clean(root) + string(os.PathSeparator)
+
+	var wg sync.WaitGroup
+
+	var walkDir func(dir string)
+	walkDir = func(dir string) {
+		// Avoid .foo, _foo, and testdata directory trees.
+		base := filepath.Base(dir)
+		if base == "" || base[0] == '.' || base[0] == '_' || base == "testdata" {
+			return
+		}
+
+		pkg := filepath.ToSlash(strings.TrimPrefix(dir, root))
+
+		// Prune search if we encounter any of these import paths.
+		switch pkg {
+		case "builtin":
+			return
+		}
+
+		ioLimit <- true
+		files, err := ReadDir(ctxt, dir)
+		<-ioLimit
+		if pkg != "" || err != nil {
+			ch <- item{pkg, err}
+		}
+		for _, fi := range files {
+			fi := fi
+			if fi.IsDir() {
+				wg.Add(1)
+				go func() {
+					walkDir(filepath.Join(dir, fi.Name()))
+					wg.Done()
+				}()
+			}
+		}
+	}
+
+	walkDir(root)
+	wg.Wait()
+}
+
+// ExpandPatterns returns the set of packages matched by patterns,
+// which may have the following forms:
+//
+//		golang.org/x/tools/cmd/guru     # a single package
+//		golang.org/x/tools/...          # all packages beneath dir
+//		...                             # the entire workspace.
+//
+// Order is significant: a pattern preceded by '-' removes matching
+// packages from the set.  For example, these patterns match all encoding
+// packages except encoding/xml:
+//
+// 	encoding/... -encoding/xml
+//
+// A trailing slash in a pattern is ignored.  (Path components of Go
+// package names are separated by slash, not the platform's path separator.)
+//
+func ExpandPatterns(ctxt *build.Context, patterns []string) map[string]bool {
+	// TODO(adonovan): support other features of 'go list':
+	// - "std"/"cmd"/"all" meta-packages
+	// - "..." not at the end of a pattern
+	// - relative patterns using "./" or "../" prefix
+
+	pkgs := make(map[string]bool)
+	doPkg := func(pkg string, neg bool) {
+		if neg {
+			delete(pkgs, pkg)
+		} else {
+			pkgs[pkg] = true
+		}
+	}
+
+	// Scan entire workspace if wildcards are present.
+	// TODO(adonovan): opt: scan only the necessary subtrees of the workspace.
+	var all []string
+	for _, arg := range patterns {
+		if strings.HasSuffix(arg, "...") {
+			all = AllPackages(ctxt)
+			break
+		}
+	}
+
+	for _, arg := range patterns {
+		if arg == "" {
+			continue
+		}
+
+		neg := arg[0] == '-'
+		if neg {
+			arg = arg[1:]
+		}
+
+		if arg == "..." {
+			// ... matches all packages
+			for _, pkg := range all {
+				doPkg(pkg, neg)
+			}
+		} else if dir := strings.TrimSuffix(arg, "/..."); dir != arg {
+			// dir/... matches all packages beneath dir
+			for _, pkg := range all {
+				if strings.HasPrefix(pkg, dir) &&
+					(len(pkg) == len(dir) || pkg[len(dir)] == '/') {
+					doPkg(pkg, neg)
+				}
+			}
+		} else {
+			// single package
+			doPkg(strings.TrimSuffix(arg, "/"), neg)
+		}
+	}
+
+	return pkgs
+}
diff --git a/vendor/golang.org/x/tools/go/buildutil/fakecontext.go b/vendor/golang.org/x/tools/go/buildutil/fakecontext.go
new file mode 100644
index 0000000000..8b7f066739
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/buildutil/fakecontext.go
@@ -0,0 +1,109 @@
+package buildutil
+
+import (
+	"fmt"
+	"go/build"
+	"io"
+	"io/ioutil"
+	"os"
+	"path"
+	"path/filepath"
+	"sort"
+	"strings"
+	"time"
+)
+
+// FakeContext returns a build.Context for the fake file tree specified
+// by pkgs, which maps package import paths to a mapping from file base
+// names to contents.
+//
+// The fake Context has a GOROOT of "/go" and no GOPATH, and overrides
+// the necessary file access methods to read from memory instead of the
+// real file system.
+//
+// Unlike a real file tree, the fake one has only two levels---packages
+// and files---so ReadDir("/go/src/") returns all packages under
+// /go/src/ including, for instance, "math" and "math/big".
+// ReadDir("/go/src/math/big") would return all the files in the
+// "math/big" package.
+//
+func FakeContext(pkgs map[string]map[string]string) *build.Context {
+	clean := func(filename string) string {
+		f := path.Clean(filepath.ToSlash(filename))
+		// Removing "/go/src" while respecting segment
+		// boundaries has this unfortunate corner case:
+		if f == "/go/src" {
+			return ""
+		}
+		return strings.TrimPrefix(f, "/go/src/")
+	}
+
+	ctxt := build.Default // copy
+	ctxt.GOROOT = "/go"
+	ctxt.GOPATH = ""
+	ctxt.Compiler = "gc"
+	ctxt.IsDir = func(dir string) bool {
+		dir = clean(dir)
+		if dir == "" {
+			return true // needed by (*build.Context).SrcDirs
+		}
+		return pkgs[dir] != nil
+	}
+	ctxt.ReadDir = func(dir string) ([]os.FileInfo, error) {
+		dir = clean(dir)
+		var fis []os.FileInfo
+		if dir == "" {
+			// enumerate packages
+			for importPath := range pkgs {
+				fis = append(fis, fakeDirInfo(importPath))
+			}
+		} else {
+			// enumerate files of package
+			for basename := range pkgs[dir] {
+				fis = append(fis, fakeFileInfo(basename))
+			}
+		}
+		sort.Sort(byName(fis))
+		return fis, nil
+	}
+	ctxt.OpenFile = func(filename string) (io.ReadCloser, error) {
+		filename = clean(filename)
+		dir, base := path.Split(filename)
+		content, ok := pkgs[path.Clean(dir)][base]
+		if !ok {
+			return nil, fmt.Errorf("file not found: %s", filename)
+		}
+		return ioutil.NopCloser(strings.NewReader(content)), nil
+	}
+	ctxt.IsAbsPath = func(path string) bool {
+		path = filepath.ToSlash(path)
+		// Don't rely on the default (filepath.Path) since on
+		// Windows, it reports virtual paths as non-absolute.
+		return strings.HasPrefix(path, "/")
+	}
+	return &ctxt
+}
+
+type byName []os.FileInfo
+
+func (s byName) Len() int           { return len(s) }
+func (s byName) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
+func (s byName) Less(i, j int) bool { return s[i].Name() < s[j].Name() }
+
+type fakeFileInfo string
+
+func (fi fakeFileInfo) Name() string    { return string(fi) }
+func (fakeFileInfo) Sys() interface{}   { return nil }
+func (fakeFileInfo) ModTime() time.Time { return time.Time{} }
+func (fakeFileInfo) IsDir() bool        { return false }
+func (fakeFileInfo) Size() int64        { return 0 }
+func (fakeFileInfo) Mode() os.FileMode  { return 0644 }
+
+type fakeDirInfo string
+
+func (fd fakeDirInfo) Name() string    { return string(fd) }
+func (fakeDirInfo) Sys() interface{}   { return nil }
+func (fakeDirInfo) ModTime() time.Time { return time.Time{} }
+func (fakeDirInfo) IsDir() bool        { return true }
+func (fakeDirInfo) Size() int64        { return 0 }
+func (fakeDirInfo) Mode() os.FileMode  { return 0755 }
diff --git a/vendor/golang.org/x/tools/go/buildutil/overlay.go b/vendor/golang.org/x/tools/go/buildutil/overlay.go
new file mode 100644
index 0000000000..3f71c4fef7
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/buildutil/overlay.go
@@ -0,0 +1,103 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package buildutil
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"go/build"
+	"io"
+	"io/ioutil"
+	"path/filepath"
+	"strconv"
+	"strings"
+)
+
+// OverlayContext overlays a build.Context with additional files from
+// a map. Files in the map take precedence over other files.
+//
+// In addition to plain string comparison, two file names are
+// considered equal if their base names match and their directory
+// components point at the same directory on the file system. That is,
+// symbolic links are followed for directories, but not files.
+//
+// A common use case for OverlayContext is to allow editors to pass in
+// a set of unsaved, modified files.
+//
+// Currently, only the Context.OpenFile function will respect the
+// overlay. This may change in the future.
+func OverlayContext(orig *build.Context, overlay map[string][]byte) *build.Context {
+	// TODO(dominikh): Implement IsDir, HasSubdir and ReadDir
+
+	rc := func(data []byte) (io.ReadCloser, error) {
+		return ioutil.NopCloser(bytes.NewBuffer(data)), nil
+	}
+
+	copy := *orig // make a copy
+	ctxt := &copy
+	ctxt.OpenFile = func(path string) (io.ReadCloser, error) {
+		// Fast path: names match exactly.
+		if content, ok := overlay[path]; ok {
+			return rc(content)
+		}
+
+		// Slow path: check for same file under a different
+		// alias, perhaps due to a symbolic link.
+		for filename, content := range overlay {
+			if sameFile(path, filename) {
+				return rc(content)
+			}
+		}
+
+		return OpenFile(orig, path)
+	}
+	return ctxt
+}
+
+// ParseOverlayArchive parses an archive containing Go files and their
+// contents. The result is intended to be used with OverlayContext.
+//
+//
+// Archive format
+//
+// The archive consists of a series of files. Each file consists of a
+// name, a decimal file size and the file contents, separated by
+// newlinews. No newline follows after the file contents.
+func ParseOverlayArchive(archive io.Reader) (map[string][]byte, error) {
+	overlay := make(map[string][]byte)
+	r := bufio.NewReader(archive)
+	for {
+		// Read file name.
+		filename, err := r.ReadString('\n')
+		if err != nil {
+			if err == io.EOF {
+				break // OK
+			}
+			return nil, fmt.Errorf("reading archive file name: %v", err)
+		}
+		filename = filepath.Clean(strings.TrimSpace(filename))
+
+		// Read file size.
+		sz, err := r.ReadString('\n')
+		if err != nil {
+			return nil, fmt.Errorf("reading size of archive file %s: %v", filename, err)
+		}
+		sz = strings.TrimSpace(sz)
+		size, err := strconv.ParseUint(sz, 10, 32)
+		if err != nil {
+			return nil, fmt.Errorf("parsing size of archive file %s: %v", filename, err)
+		}
+
+		// Read file content.
+		content := make([]byte, size)
+		if _, err := io.ReadFull(r, content); err != nil {
+			return nil, fmt.Errorf("reading archive file %s: %v", filename, err)
+		}
+		overlay[filename] = content
+	}
+
+	return overlay, nil
+}
diff --git a/vendor/golang.org/x/tools/go/buildutil/tags.go b/vendor/golang.org/x/tools/go/buildutil/tags.go
new file mode 100644
index 0000000000..486606f376
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/buildutil/tags.go
@@ -0,0 +1,75 @@
+package buildutil
+
+// This logic was copied from stringsFlag from $GOROOT/src/cmd/go/build.go.
+
+import "fmt"
+
+const TagsFlagDoc = "a list of `build tags` to consider satisfied during the build. " +
+	"For more information about build tags, see the description of " +
+	"build constraints in the documentation for the go/build package"
+
+// TagsFlag is an implementation of the flag.Value and flag.Getter interfaces that parses
+// a flag value in the same manner as go build's -tags flag and
+// populates a []string slice.
+//
+// See $GOROOT/src/go/build/doc.go for description of build tags.
+// See $GOROOT/src/cmd/go/doc.go for description of 'go build -tags' flag.
+//
+// Example:
+// 	flag.Var((*buildutil.TagsFlag)(&build.Default.BuildTags), "tags", buildutil.TagsFlagDoc)
+type TagsFlag []string
+
+func (v *TagsFlag) Set(s string) error {
+	var err error
+	*v, err = splitQuotedFields(s)
+	if *v == nil {
+		*v = []string{}
+	}
+	return err
+}
+
+func (v *TagsFlag) Get() interface{} { return *v }
+
+func splitQuotedFields(s string) ([]string, error) {
+	// Split fields allowing '' or "" around elements.
+	// Quotes further inside the string do not count.
+	var f []string
+	for len(s) > 0 {
+		for len(s) > 0 && isSpaceByte(s[0]) {
+			s = s[1:]
+		}
+		if len(s) == 0 {
+			break
+		}
+		// Accepted quoted string. No unescaping inside.
+		if s[0] == '"' || s[0] == '\'' {
+			quote := s[0]
+			s = s[1:]
+			i := 0
+			for i < len(s) && s[i] != quote {
+				i++
+			}
+			if i >= len(s) {
+				return nil, fmt.Errorf("unterminated %c string", quote)
+			}
+			f = append(f, s[:i])
+			s = s[i+1:]
+			continue
+		}
+		i := 0
+		for i < len(s) && !isSpaceByte(s[i]) {
+			i++
+		}
+		f = append(f, s[:i])
+		s = s[i:]
+	}
+	return f, nil
+}
+
+func (v *TagsFlag) String() string {
+	return "<tagsFlag>"
+}
+
+func isSpaceByte(c byte) bool {
+	return c == ' ' || c == '\t' || c == '\n' || c == '\r'
+}
diff --git a/vendor/golang.org/x/tools/go/buildutil/util.go b/vendor/golang.org/x/tools/go/buildutil/util.go
new file mode 100644
index 0000000000..fc923d7a70
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/buildutil/util.go
@@ -0,0 +1,212 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package buildutil
+
+import (
+	"fmt"
+	"go/ast"
+	"go/build"
+	"go/parser"
+	"go/token"
+	"io"
+	"io/ioutil"
+	"os"
+	"path"
+	"path/filepath"
+	"strings"
+)
+
+// ParseFile behaves like parser.ParseFile,
+// but uses the build context's file system interface, if any.
+//
+// If file is not absolute (as defined by IsAbsPath), the (dir, file)
+// components are joined using JoinPath; dir must be absolute.
+//
+// The displayPath function, if provided, is used to transform the
+// filename that will be attached to the ASTs.
+//
+// TODO(adonovan): call this from go/loader.parseFiles when the tree thaws.
+//
+func ParseFile(fset *token.FileSet, ctxt *build.Context, displayPath func(string) string, dir string, file string, mode parser.Mode) (*ast.File, error) {
+	if !IsAbsPath(ctxt, file) {
+		file = JoinPath(ctxt, dir, file)
+	}
+	rd, err := OpenFile(ctxt, file)
+	if err != nil {
+		return nil, err
+	}
+	defer rd.Close() // ignore error
+	if displayPath != nil {
+		file = displayPath(file)
+	}
+	return parser.ParseFile(fset, file, rd, mode)
+}
+
+// ContainingPackage returns the package containing filename.
+//
+// If filename is not absolute, it is interpreted relative to working directory dir.
+// All I/O is via the build context's file system interface, if any.
+//
+// The '...Files []string' fields of the resulting build.Package are not
+// populated (build.FindOnly mode).
+//
+func ContainingPackage(ctxt *build.Context, dir, filename string) (*build.Package, error) {
+	if !IsAbsPath(ctxt, filename) {
+		filename = JoinPath(ctxt, dir, filename)
+	}
+
+	// We must not assume the file tree uses
+	// "/" always,
+	// `\` always,
+	// or os.PathSeparator (which varies by platform),
+	// but to make any progress, we are forced to assume that
+	// paths will not use `\` unless the PathSeparator
+	// is also `\`, thus we can rely on filepath.ToSlash for some sanity.
+
+	dirSlash := path.Dir(filepath.ToSlash(filename)) + "/"
+
+	// We assume that no source root (GOPATH[i] or GOROOT) contains any other.
+	for _, srcdir := range ctxt.SrcDirs() {
+		srcdirSlash := filepath.ToSlash(srcdir) + "/"
+		if importPath, ok := HasSubdir(ctxt, srcdirSlash, dirSlash); ok {
+			return ctxt.Import(importPath, dir, build.FindOnly)
+		}
+	}
+
+	return nil, fmt.Errorf("can't find package containing %s", filename)
+}
+
+// -- Effective methods of file system interface -------------------------
+
+// (go/build.Context defines these as methods, but does not export them.)
+
+// hasSubdir calls ctxt.HasSubdir (if not nil) or else uses
+// the local file system to answer the question.
+func HasSubdir(ctxt *build.Context, root, dir string) (rel string, ok bool) {
+	if f := ctxt.HasSubdir; f != nil {
+		return f(root, dir)
+	}
+
+	// Try using paths we received.
+	if rel, ok = hasSubdir(root, dir); ok {
+		return
+	}
+
+	// Try expanding symlinks and comparing
+	// expanded against unexpanded and
+	// expanded against expanded.
+	rootSym, _ := filepath.EvalSymlinks(root)
+	dirSym, _ := filepath.EvalSymlinks(dir)
+
+	if rel, ok = hasSubdir(rootSym, dir); ok {
+		return
+	}
+	if rel, ok = hasSubdir(root, dirSym); ok {
+		return
+	}
+	return hasSubdir(rootSym, dirSym)
+}
+
+func hasSubdir(root, dir string) (rel string, ok bool) {
+	const sep = string(filepath.Separator)
+	root = filepath.Clean(root)
+	if !strings.HasSuffix(root, sep) {
+		root += sep
+	}
+
+	dir = filepath.Clean(dir)
+	if !strings.HasPrefix(dir, root) {
+		return "", false
+	}
+
+	return filepath.ToSlash(dir[len(root):]), true
+}
+
+// FileExists returns true if the specified file exists,
+// using the build context's file system interface.
+func FileExists(ctxt *build.Context, path string) bool {
+	if ctxt.OpenFile != nil {
+		r, err := ctxt.OpenFile(path)
+		if err != nil {
+			return false
+		}
+		r.Close() // ignore error
+		return true
+	}
+	_, err := os.Stat(path)
+	return err == nil
+}
+
+// OpenFile behaves like os.Open,
+// but uses the build context's file system interface, if any.
+func OpenFile(ctxt *build.Context, path string) (io.ReadCloser, error) {
+	if ctxt.OpenFile != nil {
+		return ctxt.OpenFile(path)
+	}
+	return os.Open(path)
+}
+
+// IsAbsPath behaves like filepath.IsAbs,
+// but uses the build context's file system interface, if any.
+func IsAbsPath(ctxt *build.Context, path string) bool {
+	if ctxt.IsAbsPath != nil {
+		return ctxt.IsAbsPath(path)
+	}
+	return filepath.IsAbs(path)
+}
+
+// JoinPath behaves like filepath.Join,
+// but uses the build context's file system interface, if any.
+func JoinPath(ctxt *build.Context, path ...string) string {
+	if ctxt.JoinPath != nil {
+		return ctxt.JoinPath(path...)
+	}
+	return filepath.Join(path...)
+}
+
+// IsDir behaves like os.Stat plus IsDir,
+// but uses the build context's file system interface, if any.
+func IsDir(ctxt *build.Context, path string) bool {
+	if ctxt.IsDir != nil {
+		return ctxt.IsDir(path)
+	}
+	fi, err := os.Stat(path)
+	return err == nil && fi.IsDir()
+}
+
+// ReadDir behaves like ioutil.ReadDir,
+// but uses the build context's file system interface, if any.
+func ReadDir(ctxt *build.Context, path string) ([]os.FileInfo, error) {
+	if ctxt.ReadDir != nil {
+		return ctxt.ReadDir(path)
+	}
+	return ioutil.ReadDir(path)
+}
+
+// SplitPathList behaves like filepath.SplitList,
+// but uses the build context's file system interface, if any.
+func SplitPathList(ctxt *build.Context, s string) []string {
+	if ctxt.SplitPathList != nil {
+		return ctxt.SplitPathList(s)
+	}
+	return filepath.SplitList(s)
+}
+
+// sameFile returns true if x and y have the same basename and denote
+// the same file.
+//
+func sameFile(x, y string) bool {
+	if path.Clean(x) == path.Clean(y) {
+		return true
+	}
+	if filepath.Base(x) == filepath.Base(y) { // (optimisation)
+		if xi, err := os.Stat(x); err == nil {
+			if yi, err := os.Stat(y); err == nil {
+				return os.SameFile(xi, yi)
+			}
+		}
+	}
+	return false
+}
diff --git a/vendor/golang.org/x/tools/go/gcexportdata/gcexportdata.go b/vendor/golang.org/x/tools/go/gcexportdata/gcexportdata.go
new file mode 100644
index 0000000000..98b3987b97
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/gcexportdata/gcexportdata.go
@@ -0,0 +1,109 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package gcexportdata provides functions for locating, reading, and
+// writing export data files containing type information produced by the
+// gc compiler.  This package supports go1.7 export data format and all
+// later versions.
+//
+// Although it might seem convenient for this package to live alongside
+// go/types in the standard library, this would cause version skew
+// problems for developer tools that use it, since they must be able to
+// consume the outputs of the gc compiler both before and after a Go
+// update such as from Go 1.7 to Go 1.8.  Because this package lives in
+// golang.org/x/tools, sites can update their version of this repo some
+// time before the Go 1.8 release and rebuild and redeploy their
+// developer tools, which will then be able to consume both Go 1.7 and
+// Go 1.8 export data files, so they will work before and after the
+// Go update. (See discussion at https://golang.org/issue/15651.)
+//
+package gcexportdata // import "golang.org/x/tools/go/gcexportdata"
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"go/token"
+	"go/types"
+	"io"
+	"io/ioutil"
+
+	"golang.org/x/tools/go/internal/gcimporter"
+)
+
+// Find returns the name of an object (.o) or archive (.a) file
+// containing type information for the specified import path,
+// using the workspace layout conventions of go/build.
+// If no file was found, an empty filename is returned.
+//
+// A relative srcDir is interpreted relative to the current working directory.
+//
+// Find also returns the package's resolved (canonical) import path,
+// reflecting the effects of srcDir and vendoring on importPath.
+func Find(importPath, srcDir string) (filename, path string) {
+	return gcimporter.FindPkg(importPath, srcDir)
+}
+
+// NewReader returns a reader for the export data section of an object
+// (.o) or archive (.a) file read from r.  The new reader may provide
+// additional trailing data beyond the end of the export data.
+func NewReader(r io.Reader) (io.Reader, error) {
+	buf := bufio.NewReader(r)
+	_, err := gcimporter.FindExportData(buf)
+	// If we ever switch to a zip-like archive format with the ToC
+	// at the end, we can return the correct portion of export data,
+	// but for now we must return the entire rest of the file.
+	return buf, err
+}
+
+// Read reads export data from in, decodes it, and returns type
+// information for the package.
+// The package name is specified by path.
+// File position information is added to fset.
+//
+// Read may inspect and add to the imports map to ensure that references
+// within the export data to other packages are consistent.  The caller
+// must ensure that imports[path] does not exist, or exists but is
+// incomplete (see types.Package.Complete), and Read inserts the
+// resulting package into this map entry.
+//
+// On return, the state of the reader is undefined.
+func Read(in io.Reader, fset *token.FileSet, imports map[string]*types.Package, path string) (*types.Package, error) {
+	data, err := ioutil.ReadAll(in)
+	if err != nil {
+		return nil, fmt.Errorf("reading export data for %q: %v", path, err)
+	}
+
+	if bytes.HasPrefix(data, []byte("!<arch>")) {
+		return nil, fmt.Errorf("can't read export data for %q directly from an archive file (call gcexportdata.NewReader first to extract export data)", path)
+	}
+
+	// The App Engine Go runtime v1.6 uses the old export data format.
+	// TODO(adonovan): delete once v1.7 has been around for a while.
+	if bytes.HasPrefix(data, []byte("package ")) {
+		return gcimporter.ImportData(imports, path, path, bytes.NewReader(data))
+	}
+
+	// The indexed export format starts with an 'i'; the older
+	// binary export format starts with a 'c', 'd', or 'v'
+	// (from "version"). Select appropriate importer.
+	if len(data) > 0 && data[0] == 'i' {
+		_, pkg, err := gcimporter.IImportData(fset, imports, data[1:], path)
+		return pkg, err
+	}
+
+	_, pkg, err := gcimporter.BImportData(fset, imports, data, path)
+	return pkg, err
+}
+
+// Write writes encoded type information for the specified package to out.
+// The FileSet provides file position information for named objects.
+func Write(out io.Writer, fset *token.FileSet, pkg *types.Package) error {
+	b, err := gcimporter.BExportData(fset, pkg)
+	if err != nil {
+		return err
+	}
+	_, err = out.Write(b)
+	return err
+}
diff --git a/vendor/golang.org/x/tools/go/gcexportdata/importer.go b/vendor/golang.org/x/tools/go/gcexportdata/importer.go
new file mode 100644
index 0000000000..efe221e7e1
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/gcexportdata/importer.go
@@ -0,0 +1,73 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package gcexportdata
+
+import (
+	"fmt"
+	"go/token"
+	"go/types"
+	"os"
+)
+
+// NewImporter returns a new instance of the types.Importer interface
+// that reads type information from export data files written by gc.
+// The Importer also satisfies types.ImporterFrom.
+//
+// Export data files are located using "go build" workspace conventions
+// and the build.Default context.
+//
+// Use this importer instead of go/importer.For("gc", ...) to avoid the
+// version-skew problems described in the documentation of this package,
+// or to control the FileSet or access the imports map populated during
+// package loading.
+//
+func NewImporter(fset *token.FileSet, imports map[string]*types.Package) types.ImporterFrom {
+	return importer{fset, imports}
+}
+
+type importer struct {
+	fset    *token.FileSet
+	imports map[string]*types.Package
+}
+
+func (imp importer) Import(importPath string) (*types.Package, error) {
+	return imp.ImportFrom(importPath, "", 0)
+}
+
+func (imp importer) ImportFrom(importPath, srcDir string, mode types.ImportMode) (_ *types.Package, err error) {
+	filename, path := Find(importPath, srcDir)
+	if filename == "" {
+		if importPath == "unsafe" {
+			// Even for unsafe, call Find first in case
+			// the package was vendored.
+			return types.Unsafe, nil
+		}
+		return nil, fmt.Errorf("can't find import: %s", importPath)
+	}
+
+	if pkg, ok := imp.imports[path]; ok && pkg.Complete() {
+		return pkg, nil // cache hit
+	}
+
+	// open file
+	f, err := os.Open(filename)
+	if err != nil {
+		return nil, err
+	}
+	defer func() {
+		f.Close()
+		if err != nil {
+			// add file name to error
+			err = fmt.Errorf("reading export data: %s: %v", filename, err)
+		}
+	}()
+
+	r, err := NewReader(f)
+	if err != nil {
+		return nil, err
+	}
+
+	return Read(r, imp.fset, imp.imports, path)
+}
diff --git a/vendor/golang.org/x/tools/go/gcexportdata/main.go b/vendor/golang.org/x/tools/go/gcexportdata/main.go
new file mode 100644
index 0000000000..2713dce64a
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/gcexportdata/main.go
@@ -0,0 +1,99 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+// The gcexportdata command is a diagnostic tool that displays the
+// contents of gc export data files.
+package main
+
+import (
+	"flag"
+	"fmt"
+	"go/token"
+	"go/types"
+	"log"
+	"os"
+
+	"golang.org/x/tools/go/gcexportdata"
+	"golang.org/x/tools/go/types/typeutil"
+)
+
+var packageFlag = flag.String("package", "", "alternative package to print")
+
+func main() {
+	log.SetPrefix("gcexportdata: ")
+	log.SetFlags(0)
+	flag.Usage = func() {
+		fmt.Fprintln(os.Stderr, "usage: gcexportdata [-package path] file.a")
+	}
+	flag.Parse()
+	if flag.NArg() != 1 {
+		flag.Usage()
+		os.Exit(2)
+	}
+	filename := flag.Args()[0]
+
+	f, err := os.Open(filename)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	r, err := gcexportdata.NewReader(f)
+	if err != nil {
+		log.Fatalf("%s: %s", filename, err)
+	}
+
+	// Decode the package.
+	const primary = "<primary>"
+	imports := make(map[string]*types.Package)
+	fset := token.NewFileSet()
+	pkg, err := gcexportdata.Read(r, fset, imports, primary)
+	if err != nil {
+		log.Fatalf("%s: %s", filename, err)
+	}
+
+	// Optionally select an indirectly mentioned package.
+	if *packageFlag != "" {
+		pkg = imports[*packageFlag]
+		if pkg == nil {
+			fmt.Fprintf(os.Stderr, "export data file %s does not mention %s; has:\n",
+				filename, *packageFlag)
+			for p := range imports {
+				if p != primary {
+					fmt.Fprintf(os.Stderr, "\t%s\n", p)
+				}
+			}
+			os.Exit(1)
+		}
+	}
+
+	// Print all package-level declarations, including non-exported ones.
+	fmt.Printf("package %s\n", pkg.Name())
+	for _, imp := range pkg.Imports() {
+		fmt.Printf("import %q\n", imp.Path())
+	}
+	qual := func(p *types.Package) string {
+		if pkg == p {
+			return ""
+		}
+		return p.Name()
+	}
+	scope := pkg.Scope()
+	for _, name := range scope.Names() {
+		obj := scope.Lookup(name)
+		fmt.Printf("%s: %s\n",
+			fset.Position(obj.Pos()),
+			types.ObjectString(obj, qual))
+
+		// For types, print each method.
+		if _, ok := obj.(*types.TypeName); ok {
+			for _, method := range typeutil.IntuitiveMethodSet(obj.Type(), nil) {
+				fmt.Printf("%s: %s\n",
+					fset.Position(method.Obj().Pos()),
+					types.SelectionString(method, qual))
+			}
+		}
+	}
+}
diff --git a/vendor/golang.org/x/tools/go/internal/cgo/cgo.go b/vendor/golang.org/x/tools/go/internal/cgo/cgo.go
new file mode 100644
index 0000000000..0f652ea6fb
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/internal/cgo/cgo.go
@@ -0,0 +1,220 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package cgo
+
+// This file handles cgo preprocessing of files containing `import "C"`.
+//
+// DESIGN
+//
+// The approach taken is to run the cgo processor on the package's
+// CgoFiles and parse the output, faking the filenames of the
+// resulting ASTs so that the synthetic file containing the C types is
+// called "C" (e.g. "~/go/src/net/C") and the preprocessed files
+// have their original names (e.g. "~/go/src/net/cgo_unix.go"),
+// not the names of the actual temporary files.
+//
+// The advantage of this approach is its fidelity to 'go build'.  The
+// downside is that the token.Position.Offset for each AST node is
+// incorrect, being an offset within the temporary file.  Line numbers
+// should still be correct because of the //line comments.
+//
+// The logic of this file is mostly plundered from the 'go build'
+// tool, which also invokes the cgo preprocessor.
+//
+//
+// REJECTED ALTERNATIVE
+//
+// An alternative approach that we explored is to extend go/types'
+// Importer mechanism to provide the identity of the importing package
+// so that each time `import "C"` appears it resolves to a different
+// synthetic package containing just the objects needed in that case.
+// The loader would invoke cgo but parse only the cgo_types.go file
+// defining the package-level objects, discarding the other files
+// resulting from preprocessing.
+//
+// The benefit of this approach would have been that source-level
+// syntax information would correspond exactly to the original cgo
+// file, with no preprocessing involved, making source tools like
+// godoc, guru, and eg happy.  However, the approach was rejected
+// due to the additional complexity it would impose on go/types.  (It
+// made for a beautiful demo, though.)
+//
+// cgo files, despite their *.go extension, are not legal Go source
+// files per the specification since they may refer to unexported
+// members of package "C" such as C.int.  Also, a function such as
+// C.getpwent has in effect two types, one matching its C type and one
+// which additionally returns (errno C.int).  The cgo preprocessor
+// uses name mangling to distinguish these two functions in the
+// processed code, but go/types would need to duplicate this logic in
+// its handling of function calls, analogous to the treatment of map
+// lookups in which y=m[k] and y,ok=m[k] are both legal.
+
+import (
+	"fmt"
+	"go/ast"
+	"go/build"
+	"go/parser"
+	"go/token"
+	"io/ioutil"
+	"log"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"regexp"
+	"strings"
+)
+
+// ProcessFiles invokes the cgo preprocessor on bp.CgoFiles, parses
+// the output and returns the resulting ASTs.
+//
+func ProcessFiles(bp *build.Package, fset *token.FileSet, DisplayPath func(path string) string, mode parser.Mode) ([]*ast.File, error) {
+	tmpdir, err := ioutil.TempDir("", strings.Replace(bp.ImportPath, "/", "_", -1)+"_C")
+	if err != nil {
+		return nil, err
+	}
+	defer os.RemoveAll(tmpdir)
+
+	pkgdir := bp.Dir
+	if DisplayPath != nil {
+		pkgdir = DisplayPath(pkgdir)
+	}
+
+	cgoFiles, cgoDisplayFiles, err := Run(bp, pkgdir, tmpdir, false)
+	if err != nil {
+		return nil, err
+	}
+	var files []*ast.File
+	for i := range cgoFiles {
+		rd, err := os.Open(cgoFiles[i])
+		if err != nil {
+			return nil, err
+		}
+		display := filepath.Join(bp.Dir, cgoDisplayFiles[i])
+		f, err := parser.ParseFile(fset, display, rd, mode)
+		rd.Close()
+		if err != nil {
+			return nil, err
+		}
+		files = append(files, f)
+	}
+	return files, nil
+}
+
+var cgoRe = regexp.MustCompile(`[/\\:]`)
+
+// Run invokes the cgo preprocessor on bp.CgoFiles and returns two
+// lists of files: the resulting processed files (in temporary
+// directory tmpdir) and the corresponding names of the unprocessed files.
+//
+// Run is adapted from (*builder).cgo in
+// $GOROOT/src/cmd/go/build.go, but these features are unsupported:
+// Objective C, CGOPKGPATH, CGO_FLAGS.
+//
+// If useabs is set to true, absolute paths of the bp.CgoFiles will be passed in
+// to the cgo preprocessor. This in turn will set the // line comments
+// referring to those files to use absolute paths. This is needed for
+// go/packages using the legacy go list support so it is able to find
+// the original files.
+func Run(bp *build.Package, pkgdir, tmpdir string, useabs bool) (files, displayFiles []string, err error) {
+	cgoCPPFLAGS, _, _, _ := cflags(bp, true)
+	_, cgoexeCFLAGS, _, _ := cflags(bp, false)
+
+	if len(bp.CgoPkgConfig) > 0 {
+		pcCFLAGS, err := pkgConfigFlags(bp)
+		if err != nil {
+			return nil, nil, err
+		}
+		cgoCPPFLAGS = append(cgoCPPFLAGS, pcCFLAGS...)
+	}
+
+	// Allows including _cgo_export.h from .[ch] files in the package.
+	cgoCPPFLAGS = append(cgoCPPFLAGS, "-I", tmpdir)
+
+	// _cgo_gotypes.go (displayed "C") contains the type definitions.
+	files = append(files, filepath.Join(tmpdir, "_cgo_gotypes.go"))
+	displayFiles = append(displayFiles, "C")
+	for _, fn := range bp.CgoFiles {
+		// "foo.cgo1.go" (displayed "foo.go") is the processed Go source.
+		f := cgoRe.ReplaceAllString(fn[:len(fn)-len("go")], "_")
+		files = append(files, filepath.Join(tmpdir, f+"cgo1.go"))
+		displayFiles = append(displayFiles, fn)
+	}
+
+	var cgoflags []string
+	if bp.Goroot && bp.ImportPath == "runtime/cgo" {
+		cgoflags = append(cgoflags, "-import_runtime_cgo=false")
+	}
+	if bp.Goroot && bp.ImportPath == "runtime/race" || bp.ImportPath == "runtime/cgo" {
+		cgoflags = append(cgoflags, "-import_syscall=false")
+	}
+
+	var cgoFiles []string = bp.CgoFiles
+	if useabs {
+		cgoFiles = make([]string, len(bp.CgoFiles))
+		for i := range cgoFiles {
+			cgoFiles[i] = filepath.Join(pkgdir, bp.CgoFiles[i])
+		}
+	}
+
+	args := stringList(
+		"go", "tool", "cgo", "-objdir", tmpdir, cgoflags, "--",
+		cgoCPPFLAGS, cgoexeCFLAGS, cgoFiles,
+	)
+	if false {
+		log.Printf("Running cgo for package %q: %s (dir=%s)", bp.ImportPath, args, pkgdir)
+	}
+	cmd := exec.Command(args[0], args[1:]...)
+	cmd.Dir = pkgdir
+	cmd.Stdout = os.Stderr
+	cmd.Stderr = os.Stderr
+	if err := cmd.Run(); err != nil {
+		return nil, nil, fmt.Errorf("cgo failed: %s: %s", args, err)
+	}
+
+	return files, displayFiles, nil
+}
+
+// -- unmodified from 'go build' ---------------------------------------
+
+// Return the flags to use when invoking the C or C++ compilers, or cgo.
+func cflags(p *build.Package, def bool) (cppflags, cflags, cxxflags, ldflags []string) {
+	var defaults string
+	if def {
+		defaults = "-g -O2"
+	}
+
+	cppflags = stringList(envList("CGO_CPPFLAGS", ""), p.CgoCPPFLAGS)
+	cflags = stringList(envList("CGO_CFLAGS", defaults), p.CgoCFLAGS)
+	cxxflags = stringList(envList("CGO_CXXFLAGS", defaults), p.CgoCXXFLAGS)
+	ldflags = stringList(envList("CGO_LDFLAGS", defaults), p.CgoLDFLAGS)
+	return
+}
+
+// envList returns the value of the given environment variable broken
+// into fields, using the default value when the variable is empty.
+func envList(key, def string) []string {
+	v := os.Getenv(key)
+	if v == "" {
+		v = def
+	}
+	return strings.Fields(v)
+}
+
+// stringList's arguments should be a sequence of string or []string values.
+// stringList flattens them into a single []string.
+func stringList(args ...interface{}) []string {
+	var x []string
+	for _, arg := range args {
+		switch arg := arg.(type) {
+		case []string:
+			x = append(x, arg...)
+		case string:
+			x = append(x, arg)
+		default:
+			panic("stringList: invalid argument")
+		}
+	}
+	return x
+}
diff --git a/vendor/golang.org/x/tools/go/internal/cgo/cgo_pkgconfig.go b/vendor/golang.org/x/tools/go/internal/cgo/cgo_pkgconfig.go
new file mode 100644
index 0000000000..b5bb95a63e
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/internal/cgo/cgo_pkgconfig.go
@@ -0,0 +1,39 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package cgo
+
+import (
+	"errors"
+	"fmt"
+	"go/build"
+	"os/exec"
+	"strings"
+)
+
+// pkgConfig runs pkg-config with the specified arguments and returns the flags it prints.
+func pkgConfig(mode string, pkgs []string) (flags []string, err error) {
+	cmd := exec.Command("pkg-config", append([]string{mode}, pkgs...)...)
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		s := fmt.Sprintf("%s failed: %v", strings.Join(cmd.Args, " "), err)
+		if len(out) > 0 {
+			s = fmt.Sprintf("%s: %s", s, out)
+		}
+		return nil, errors.New(s)
+	}
+	if len(out) > 0 {
+		flags = strings.Fields(string(out))
+	}
+	return
+}
+
+// pkgConfigFlags calls pkg-config if needed and returns the cflags
+// needed to build the package.
+func pkgConfigFlags(p *build.Package) (cflags []string, err error) {
+	if len(p.CgoPkgConfig) == 0 {
+		return nil, nil
+	}
+	return pkgConfig("--cflags", p.CgoPkgConfig)
+}
diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/bexport.go b/vendor/golang.org/x/tools/go/internal/gcimporter/bexport.go
new file mode 100644
index 0000000000..a807d0aaa2
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/internal/gcimporter/bexport.go
@@ -0,0 +1,852 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Binary package export.
+// This file was derived from $GOROOT/src/cmd/compile/internal/gc/bexport.go;
+// see that file for specification of the format.
+
+package gcimporter
+
+import (
+	"bytes"
+	"encoding/binary"
+	"fmt"
+	"go/ast"
+	"go/constant"
+	"go/token"
+	"go/types"
+	"math"
+	"math/big"
+	"sort"
+	"strings"
+)
+
+// If debugFormat is set, each integer and string value is preceded by a marker
+// and position information in the encoding. This mechanism permits an importer
+// to recognize immediately when it is out of sync. The importer recognizes this
+// mode automatically (i.e., it can import export data produced with debugging
+// support even if debugFormat is not set at the time of import). This mode will
+// lead to massively larger export data (by a factor of 2 to 3) and should only
+// be enabled during development and debugging.
+//
+// NOTE: This flag is the first flag to enable if importing dies because of
+// (suspected) format errors, and whenever a change is made to the format.
+const debugFormat = false // default: false
+
+// If trace is set, debugging output is printed to std out.
+const trace = false // default: false
+
+// Current export format version. Increase with each format change.
+// Note: The latest binary (non-indexed) export format is at version 6.
+//       This exporter is still at level 4, but it doesn't matter since
+//       the binary importer can handle older versions just fine.
+// 6: package height (CL 105038) -- NOT IMPLEMENTED HERE
+// 5: improved position encoding efficiency (issue 20080, CL 41619) -- NOT IMPLEMEMTED HERE
+// 4: type name objects support type aliases, uses aliasTag
+// 3: Go1.8 encoding (same as version 2, aliasTag defined but never used)
+// 2: removed unused bool in ODCL export (compiler only)
+// 1: header format change (more regular), export package for _ struct fields
+// 0: Go1.7 encoding
+const exportVersion = 4
+
+// trackAllTypes enables cycle tracking for all types, not just named
+// types. The existing compiler invariants assume that unnamed types
+// that are not completely set up are not used, or else there are spurious
+// errors.
+// If disabled, only named types are tracked, possibly leading to slightly
+// less efficient encoding in rare cases. It also prevents the export of
+// some corner-case type declarations (but those are not handled correctly
+// with with the textual export format either).
+// TODO(gri) enable and remove once issues caused by it are fixed
+const trackAllTypes = false
+
+type exporter struct {
+	fset *token.FileSet
+	out  bytes.Buffer
+
+	// object -> index maps, indexed in order of serialization
+	strIndex map[string]int
+	pkgIndex map[*types.Package]int
+	typIndex map[types.Type]int
+
+	// position encoding
+	posInfoFormat bool
+	prevFile      string
+	prevLine      int
+
+	// debugging support
+	written int // bytes written
+	indent  int // for trace
+}
+
+// internalError represents an error generated inside this package.
+type internalError string
+
+func (e internalError) Error() string { return "gcimporter: " + string(e) }
+
+func internalErrorf(format string, args ...interface{}) error {
+	return internalError(fmt.Sprintf(format, args...))
+}
+
+// BExportData returns binary export data for pkg.
+// If no file set is provided, position info will be missing.
+func BExportData(fset *token.FileSet, pkg *types.Package) (b []byte, err error) {
+	defer func() {
+		if e := recover(); e != nil {
+			if ierr, ok := e.(internalError); ok {
+				err = ierr
+				return
+			}
+			// Not an internal error; panic again.
+			panic(e)
+		}
+	}()
+
+	p := exporter{
+		fset:          fset,
+		strIndex:      map[string]int{"": 0}, // empty string is mapped to 0
+		pkgIndex:      make(map[*types.Package]int),
+		typIndex:      make(map[types.Type]int),
+		posInfoFormat: true, // TODO(gri) might become a flag, eventually
+	}
+
+	// write version info
+	// The version string must start with "version %d" where %d is the version
+	// number. Additional debugging information may follow after a blank; that
+	// text is ignored by the importer.
+	p.rawStringln(fmt.Sprintf("version %d", exportVersion))
+	var debug string
+	if debugFormat {
+		debug = "debug"
+	}
+	p.rawStringln(debug) // cannot use p.bool since it's affected by debugFormat; also want to see this clearly
+	p.bool(trackAllTypes)
+	p.bool(p.posInfoFormat)
+
+	// --- generic export data ---
+
+	// populate type map with predeclared "known" types
+	for index, typ := range predeclared() {
+		p.typIndex[typ] = index
+	}
+	if len(p.typIndex) != len(predeclared()) {
+		return nil, internalError("duplicate entries in type map?")
+	}
+
+	// write package data
+	p.pkg(pkg, true)
+	if trace {
+		p.tracef("\n")
+	}
+
+	// write objects
+	objcount := 0
+	scope := pkg.Scope()
+	for _, name := range scope.Names() {
+		if !ast.IsExported(name) {
+			continue
+		}
+		if trace {
+			p.tracef("\n")
+		}
+		p.obj(scope.Lookup(name))
+		objcount++
+	}
+
+	// indicate end of list
+	if trace {
+		p.tracef("\n")
+	}
+	p.tag(endTag)
+
+	// for self-verification only (redundant)
+	p.int(objcount)
+
+	if trace {
+		p.tracef("\n")
+	}
+
+	// --- end of export data ---
+
+	return p.out.Bytes(), nil
+}
+
+func (p *exporter) pkg(pkg *types.Package, emptypath bool) {
+	if pkg == nil {
+		panic(internalError("unexpected nil pkg"))
+	}
+
+	// if we saw the package before, write its index (>= 0)
+	if i, ok := p.pkgIndex[pkg]; ok {
+		p.index('P', i)
+		return
+	}
+
+	// otherwise, remember the package, write the package tag (< 0) and package data
+	if trace {
+		p.tracef("P%d = { ", len(p.pkgIndex))
+		defer p.tracef("} ")
+	}
+	p.pkgIndex[pkg] = len(p.pkgIndex)
+
+	p.tag(packageTag)
+	p.string(pkg.Name())
+	if emptypath {
+		p.string("")
+	} else {
+		p.string(pkg.Path())
+	}
+}
+
+func (p *exporter) obj(obj types.Object) {
+	switch obj := obj.(type) {
+	case *types.Const:
+		p.tag(constTag)
+		p.pos(obj)
+		p.qualifiedName(obj)
+		p.typ(obj.Type())
+		p.value(obj.Val())
+
+	case *types.TypeName:
+		if obj.IsAlias() {
+			p.tag(aliasTag)
+			p.pos(obj)
+			p.qualifiedName(obj)
+		} else {
+			p.tag(typeTag)
+		}
+		p.typ(obj.Type())
+
+	case *types.Var:
+		p.tag(varTag)
+		p.pos(obj)
+		p.qualifiedName(obj)
+		p.typ(obj.Type())
+
+	case *types.Func:
+		p.tag(funcTag)
+		p.pos(obj)
+		p.qualifiedName(obj)
+		sig := obj.Type().(*types.Signature)
+		p.paramList(sig.Params(), sig.Variadic())
+		p.paramList(sig.Results(), false)
+
+	default:
+		panic(internalErrorf("unexpected object %v (%T)", obj, obj))
+	}
+}
+
+func (p *exporter) pos(obj types.Object) {
+	if !p.posInfoFormat {
+		return
+	}
+
+	file, line := p.fileLine(obj)
+	if file == p.prevFile {
+		// common case: write line delta
+		// delta == 0 means different file or no line change
+		delta := line - p.prevLine
+		p.int(delta)
+		if delta == 0 {
+			p.int(-1) // -1 means no file change
+		}
+	} else {
+		// different file
+		p.int(0)
+		// Encode filename as length of common prefix with previous
+		// filename, followed by (possibly empty) suffix. Filenames
+		// frequently share path prefixes, so this can save a lot
+		// of space and make export data size less dependent on file
+		// path length. The suffix is unlikely to be empty because
+		// file names tend to end in ".go".
+		n := commonPrefixLen(p.prevFile, file)
+		p.int(n)           // n >= 0
+		p.string(file[n:]) // write suffix only
+		p.prevFile = file
+		p.int(line)
+	}
+	p.prevLine = line
+}
+
+func (p *exporter) fileLine(obj types.Object) (file string, line int) {
+	if p.fset != nil {
+		pos := p.fset.Position(obj.Pos())
+		file = pos.Filename
+		line = pos.Line
+	}
+	return
+}
+
+func commonPrefixLen(a, b string) int {
+	if len(a) > len(b) {
+		a, b = b, a
+	}
+	// len(a) <= len(b)
+	i := 0
+	for i < len(a) && a[i] == b[i] {
+		i++
+	}
+	return i
+}
+
+func (p *exporter) qualifiedName(obj types.Object) {
+	p.string(obj.Name())
+	p.pkg(obj.Pkg(), false)
+}
+
+func (p *exporter) typ(t types.Type) {
+	if t == nil {
+		panic(internalError("nil type"))
+	}
+
+	// Possible optimization: Anonymous pointer types *T where
+	// T is a named type are common. We could canonicalize all
+	// such types *T to a single type PT = *T. This would lead
+	// to at most one *T entry in typIndex, and all future *T's
+	// would be encoded as the respective index directly. Would
+	// save 1 byte (pointerTag) per *T and reduce the typIndex
+	// size (at the cost of a canonicalization map). We can do
+	// this later, without encoding format change.
+
+	// if we saw the type before, write its index (>= 0)
+	if i, ok := p.typIndex[t]; ok {
+		p.index('T', i)
+		return
+	}
+
+	// otherwise, remember the type, write the type tag (< 0) and type data
+	if trackAllTypes {
+		if trace {
+			p.tracef("T%d = {>\n", len(p.typIndex))
+			defer p.tracef("<\n} ")
+		}
+		p.typIndex[t] = len(p.typIndex)
+	}
+
+	switch t := t.(type) {
+	case *types.Named:
+		if !trackAllTypes {
+			// if we don't track all types, track named types now
+			p.typIndex[t] = len(p.typIndex)
+		}
+
+		p.tag(namedTag)
+		p.pos(t.Obj())
+		p.qualifiedName(t.Obj())
+		p.typ(t.Underlying())
+		if !types.IsInterface(t) {
+			p.assocMethods(t)
+		}
+
+	case *types.Array:
+		p.tag(arrayTag)
+		p.int64(t.Len())
+		p.typ(t.Elem())
+
+	case *types.Slice:
+		p.tag(sliceTag)
+		p.typ(t.Elem())
+
+	case *dddSlice:
+		p.tag(dddTag)
+		p.typ(t.elem)
+
+	case *types.Struct:
+		p.tag(structTag)
+		p.fieldList(t)
+
+	case *types.Pointer:
+		p.tag(pointerTag)
+		p.typ(t.Elem())
+
+	case *types.Signature:
+		p.tag(signatureTag)
+		p.paramList(t.Params(), t.Variadic())
+		p.paramList(t.Results(), false)
+
+	case *types.Interface:
+		p.tag(interfaceTag)
+		p.iface(t)
+
+	case *types.Map:
+		p.tag(mapTag)
+		p.typ(t.Key())
+		p.typ(t.Elem())
+
+	case *types.Chan:
+		p.tag(chanTag)
+		p.int(int(3 - t.Dir())) // hack
+		p.typ(t.Elem())
+
+	default:
+		panic(internalErrorf("unexpected type %T: %s", t, t))
+	}
+}
+
+func (p *exporter) assocMethods(named *types.Named) {
+	// Sort methods (for determinism).
+	var methods []*types.Func
+	for i := 0; i < named.NumMethods(); i++ {
+		methods = append(methods, named.Method(i))
+	}
+	sort.Sort(methodsByName(methods))
+
+	p.int(len(methods))
+
+	if trace && methods != nil {
+		p.tracef("associated methods {>\n")
+	}
+
+	for i, m := range methods {
+		if trace && i > 0 {
+			p.tracef("\n")
+		}
+
+		p.pos(m)
+		name := m.Name()
+		p.string(name)
+		if !exported(name) {
+			p.pkg(m.Pkg(), false)
+		}
+
+		sig := m.Type().(*types.Signature)
+		p.paramList(types.NewTuple(sig.Recv()), false)
+		p.paramList(sig.Params(), sig.Variadic())
+		p.paramList(sig.Results(), false)
+		p.int(0) // dummy value for go:nointerface pragma - ignored by importer
+	}
+
+	if trace && methods != nil {
+		p.tracef("<\n} ")
+	}
+}
+
+type methodsByName []*types.Func
+
+func (x methodsByName) Len() int           { return len(x) }
+func (x methodsByName) Swap(i, j int)      { x[i], x[j] = x[j], x[i] }
+func (x methodsByName) Less(i, j int) bool { return x[i].Name() < x[j].Name() }
+
+func (p *exporter) fieldList(t *types.Struct) {
+	if trace && t.NumFields() > 0 {
+		p.tracef("fields {>\n")
+		defer p.tracef("<\n} ")
+	}
+
+	p.int(t.NumFields())
+	for i := 0; i < t.NumFields(); i++ {
+		if trace && i > 0 {
+			p.tracef("\n")
+		}
+		p.field(t.Field(i))
+		p.string(t.Tag(i))
+	}
+}
+
+func (p *exporter) field(f *types.Var) {
+	if !f.IsField() {
+		panic(internalError("field expected"))
+	}
+
+	p.pos(f)
+	p.fieldName(f)
+	p.typ(f.Type())
+}
+
+func (p *exporter) iface(t *types.Interface) {
+	// TODO(gri): enable importer to load embedded interfaces,
+	// then emit Embeddeds and ExplicitMethods separately here.
+	p.int(0)
+
+	n := t.NumMethods()
+	if trace && n > 0 {
+		p.tracef("methods {>\n")
+		defer p.tracef("<\n} ")
+	}
+	p.int(n)
+	for i := 0; i < n; i++ {
+		if trace && i > 0 {
+			p.tracef("\n")
+		}
+		p.method(t.Method(i))
+	}
+}
+
+func (p *exporter) method(m *types.Func) {
+	sig := m.Type().(*types.Signature)
+	if sig.Recv() == nil {
+		panic(internalError("method expected"))
+	}
+
+	p.pos(m)
+	p.string(m.Name())
+	if m.Name() != "_" && !ast.IsExported(m.Name()) {
+		p.pkg(m.Pkg(), false)
+	}
+
+	// interface method; no need to encode receiver.
+	p.paramList(sig.Params(), sig.Variadic())
+	p.paramList(sig.Results(), false)
+}
+
+func (p *exporter) fieldName(f *types.Var) {
+	name := f.Name()
+
+	if f.Anonymous() {
+		// anonymous field - we distinguish between 3 cases:
+		// 1) field name matches base type name and is exported
+		// 2) field name matches base type name and is not exported
+		// 3) field name doesn't match base type name (alias name)
+		bname := basetypeName(f.Type())
+		if name == bname {
+			if ast.IsExported(name) {
+				name = "" // 1) we don't need to know the field name or package
+			} else {
+				name = "?" // 2) use unexported name "?" to force package export
+			}
+		} else {
+			// 3) indicate alias and export name as is
+			// (this requires an extra "@" but this is a rare case)
+			p.string("@")
+		}
+	}
+
+	p.string(name)
+	if name != "" && !ast.IsExported(name) {
+		p.pkg(f.Pkg(), false)
+	}
+}
+
+func basetypeName(typ types.Type) string {
+	switch typ := deref(typ).(type) {
+	case *types.Basic:
+		return typ.Name()
+	case *types.Named:
+		return typ.Obj().Name()
+	default:
+		return "" // unnamed type
+	}
+}
+
+func (p *exporter) paramList(params *types.Tuple, variadic bool) {
+	// use negative length to indicate unnamed parameters
+	// (look at the first parameter only since either all
+	// names are present or all are absent)
+	n := params.Len()
+	if n > 0 && params.At(0).Name() == "" {
+		n = -n
+	}
+	p.int(n)
+	for i := 0; i < params.Len(); i++ {
+		q := params.At(i)
+		t := q.Type()
+		if variadic && i == params.Len()-1 {
+			t = &dddSlice{t.(*types.Slice).Elem()}
+		}
+		p.typ(t)
+		if n > 0 {
+			name := q.Name()
+			p.string(name)
+			if name != "_" {
+				p.pkg(q.Pkg(), false)
+			}
+		}
+		p.string("") // no compiler-specific info
+	}
+}
+
+func (p *exporter) value(x constant.Value) {
+	if trace {
+		p.tracef("= ")
+	}
+
+	switch x.Kind() {
+	case constant.Bool:
+		tag := falseTag
+		if constant.BoolVal(x) {
+			tag = trueTag
+		}
+		p.tag(tag)
+
+	case constant.Int:
+		if v, exact := constant.Int64Val(x); exact {
+			// common case: x fits into an int64 - use compact encoding
+			p.tag(int64Tag)
+			p.int64(v)
+			return
+		}
+		// uncommon case: large x - use float encoding
+		// (powers of 2 will be encoded efficiently with exponent)
+		p.tag(floatTag)
+		p.float(constant.ToFloat(x))
+
+	case constant.Float:
+		p.tag(floatTag)
+		p.float(x)
+
+	case constant.Complex:
+		p.tag(complexTag)
+		p.float(constant.Real(x))
+		p.float(constant.Imag(x))
+
+	case constant.String:
+		p.tag(stringTag)
+		p.string(constant.StringVal(x))
+
+	case constant.Unknown:
+		// package contains type errors
+		p.tag(unknownTag)
+
+	default:
+		panic(internalErrorf("unexpected value %v (%T)", x, x))
+	}
+}
+
+func (p *exporter) float(x constant.Value) {
+	if x.Kind() != constant.Float {
+		panic(internalErrorf("unexpected constant %v, want float", x))
+	}
+	// extract sign (there is no -0)
+	sign := constant.Sign(x)
+	if sign == 0 {
+		// x == 0
+		p.int(0)
+		return
+	}
+	// x != 0
+
+	var f big.Float
+	if v, exact := constant.Float64Val(x); exact {
+		// float64
+		f.SetFloat64(v)
+	} else if num, denom := constant.Num(x), constant.Denom(x); num.Kind() == constant.Int {
+		// TODO(gri): add big.Rat accessor to constant.Value.
+		r := valueToRat(num)
+		f.SetRat(r.Quo(r, valueToRat(denom)))
+	} else {
+		// Value too large to represent as a fraction => inaccessible.
+		// TODO(gri): add big.Float accessor to constant.Value.
+		f.SetFloat64(math.MaxFloat64) // FIXME
+	}
+
+	// extract exponent such that 0.5 <= m < 1.0
+	var m big.Float
+	exp := f.MantExp(&m)
+
+	// extract mantissa as *big.Int
+	// - set exponent large enough so mant satisfies mant.IsInt()
+	// - get *big.Int from mant
+	m.SetMantExp(&m, int(m.MinPrec()))
+	mant, acc := m.Int(nil)
+	if acc != big.Exact {
+		panic(internalError("internal error"))
+	}
+
+	p.int(sign)
+	p.int(exp)
+	p.string(string(mant.Bytes()))
+}
+
+func valueToRat(x constant.Value) *big.Rat {
+	// Convert little-endian to big-endian.
+	// I can't believe this is necessary.
+	bytes := constant.Bytes(x)
+	for i := 0; i < len(bytes)/2; i++ {
+		bytes[i], bytes[len(bytes)-1-i] = bytes[len(bytes)-1-i], bytes[i]
+	}
+	return new(big.Rat).SetInt(new(big.Int).SetBytes(bytes))
+}
+
+func (p *exporter) bool(b bool) bool {
+	if trace {
+		p.tracef("[")
+		defer p.tracef("= %v] ", b)
+	}
+
+	x := 0
+	if b {
+		x = 1
+	}
+	p.int(x)
+	return b
+}
+
+// ----------------------------------------------------------------------------
+// Low-level encoders
+
+func (p *exporter) index(marker byte, index int) {
+	if index < 0 {
+		panic(internalError("invalid index < 0"))
+	}
+	if debugFormat {
+		p.marker('t')
+	}
+	if trace {
+		p.tracef("%c%d ", marker, index)
+	}
+	p.rawInt64(int64(index))
+}
+
+func (p *exporter) tag(tag int) {
+	if tag >= 0 {
+		panic(internalError("invalid tag >= 0"))
+	}
+	if debugFormat {
+		p.marker('t')
+	}
+	if trace {
+		p.tracef("%s ", tagString[-tag])
+	}
+	p.rawInt64(int64(tag))
+}
+
+func (p *exporter) int(x int) {
+	p.int64(int64(x))
+}
+
+func (p *exporter) int64(x int64) {
+	if debugFormat {
+		p.marker('i')
+	}
+	if trace {
+		p.tracef("%d ", x)
+	}
+	p.rawInt64(x)
+}
+
+func (p *exporter) string(s string) {
+	if debugFormat {
+		p.marker('s')
+	}
+	if trace {
+		p.tracef("%q ", s)
+	}
+	// if we saw the string before, write its index (>= 0)
+	// (the empty string is mapped to 0)
+	if i, ok := p.strIndex[s]; ok {
+		p.rawInt64(int64(i))
+		return
+	}
+	// otherwise, remember string and write its negative length and bytes
+	p.strIndex[s] = len(p.strIndex)
+	p.rawInt64(-int64(len(s)))
+	for i := 0; i < len(s); i++ {
+		p.rawByte(s[i])
+	}
+}
+
+// marker emits a marker byte and position information which makes
+// it easy for a reader to detect if it is "out of sync". Used for
+// debugFormat format only.
+func (p *exporter) marker(m byte) {
+	p.rawByte(m)
+	// Enable this for help tracking down the location
+	// of an incorrect marker when running in debugFormat.
+	if false && trace {
+		p.tracef("#%d ", p.written)
+	}
+	p.rawInt64(int64(p.written))
+}
+
+// rawInt64 should only be used by low-level encoders.
+func (p *exporter) rawInt64(x int64) {
+	var tmp [binary.MaxVarintLen64]byte
+	n := binary.PutVarint(tmp[:], x)
+	for i := 0; i < n; i++ {
+		p.rawByte(tmp[i])
+	}
+}
+
+// rawStringln should only be used to emit the initial version string.
+func (p *exporter) rawStringln(s string) {
+	for i := 0; i < len(s); i++ {
+		p.rawByte(s[i])
+	}
+	p.rawByte('\n')
+}
+
+// rawByte is the bottleneck interface to write to p.out.
+// rawByte escapes b as follows (any encoding does that
+// hides '$'):
+//
+//	'$'  => '|' 'S'
+//	'|'  => '|' '|'
+//
+// Necessary so other tools can find the end of the
+// export data by searching for "$$".
+// rawByte should only be used by low-level encoders.
+func (p *exporter) rawByte(b byte) {
+	switch b {
+	case '$':
+		// write '$' as '|' 'S'
+		b = 'S'
+		fallthrough
+	case '|':
+		// write '|' as '|' '|'
+		p.out.WriteByte('|')
+		p.written++
+	}
+	p.out.WriteByte(b)
+	p.written++
+}
+
+// tracef is like fmt.Printf but it rewrites the format string
+// to take care of indentation.
+func (p *exporter) tracef(format string, args ...interface{}) {
+	if strings.ContainsAny(format, "<>\n") {
+		var buf bytes.Buffer
+		for i := 0; i < len(format); i++ {
+			// no need to deal with runes
+			ch := format[i]
+			switch ch {
+			case '>':
+				p.indent++
+				continue
+			case '<':
+				p.indent--
+				continue
+			}
+			buf.WriteByte(ch)
+			if ch == '\n' {
+				for j := p.indent; j > 0; j-- {
+					buf.WriteString(".  ")
+				}
+			}
+		}
+		format = buf.String()
+	}
+	fmt.Printf(format, args...)
+}
+
+// Debugging support.
+// (tagString is only used when tracing is enabled)
+var tagString = [...]string{
+	// Packages
+	-packageTag: "package",
+
+	// Types
+	-namedTag:     "named type",
+	-arrayTag:     "array",
+	-sliceTag:     "slice",
+	-dddTag:       "ddd",
+	-structTag:    "struct",
+	-pointerTag:   "pointer",
+	-signatureTag: "signature",
+	-interfaceTag: "interface",
+	-mapTag:       "map",
+	-chanTag:      "chan",
+
+	// Values
+	-falseTag:    "false",
+	-trueTag:     "true",
+	-int64Tag:    "int64",
+	-floatTag:    "float",
+	-fractionTag: "fraction",
+	-complexTag:  "complex",
+	-stringTag:   "string",
+	-unknownTag:  "unknown",
+
+	// Type aliases
+	-aliasTag: "alias",
+}
diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/bimport.go b/vendor/golang.org/x/tools/go/internal/gcimporter/bimport.go
new file mode 100644
index 0000000000..3288a0bfc7
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/internal/gcimporter/bimport.go
@@ -0,0 +1,1037 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This file is a copy of $GOROOT/src/go/internal/gcimporter/bimport.go.
+
+package gcimporter
+
+import (
+	"encoding/binary"
+	"fmt"
+	"go/constant"
+	"go/token"
+	"go/types"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"unicode"
+	"unicode/utf8"
+)
+
+type importer struct {
+	imports    map[string]*types.Package
+	data       []byte
+	importpath string
+	buf        []byte // for reading strings
+	version    int    // export format version
+
+	// object lists
+	strList       []string           // in order of appearance
+	pathList      []string           // in order of appearance
+	pkgList       []*types.Package   // in order of appearance
+	typList       []types.Type       // in order of appearance
+	interfaceList []*types.Interface // for delayed completion only
+	trackAllTypes bool
+
+	// position encoding
+	posInfoFormat bool
+	prevFile      string
+	prevLine      int
+	fake          fakeFileSet
+
+	// debugging support
+	debugFormat bool
+	read        int // bytes read
+}
+
+// BImportData imports a package from the serialized package data
+// and returns the number of bytes consumed and a reference to the package.
+// If the export data version is not recognized or the format is otherwise
+// compromised, an error is returned.
+func BImportData(fset *token.FileSet, imports map[string]*types.Package, data []byte, path string) (_ int, pkg *types.Package, err error) {
+	// catch panics and return them as errors
+	const currentVersion = 6
+	version := -1 // unknown version
+	defer func() {
+		if e := recover(); e != nil {
+			// Return a (possibly nil or incomplete) package unchanged (see #16088).
+			if version > currentVersion {
+				err = fmt.Errorf("cannot import %q (%v), export data is newer version - update tool", path, e)
+			} else {
+				err = fmt.Errorf("cannot import %q (%v), possibly version skew - reinstall package", path, e)
+			}
+		}
+	}()
+
+	p := importer{
+		imports:    imports,
+		data:       data,
+		importpath: path,
+		version:    version,
+		strList:    []string{""}, // empty string is mapped to 0
+		pathList:   []string{""}, // empty string is mapped to 0
+		fake: fakeFileSet{
+			fset:  fset,
+			files: make(map[string]*token.File),
+		},
+	}
+
+	// read version info
+	var versionstr string
+	if b := p.rawByte(); b == 'c' || b == 'd' {
+		// Go1.7 encoding; first byte encodes low-level
+		// encoding format (compact vs debug).
+		// For backward-compatibility only (avoid problems with
+		// old installed packages). Newly compiled packages use
+		// the extensible format string.
+		// TODO(gri) Remove this support eventually; after Go1.8.
+		if b == 'd' {
+			p.debugFormat = true
+		}
+		p.trackAllTypes = p.rawByte() == 'a'
+		p.posInfoFormat = p.int() != 0
+		versionstr = p.string()
+		if versionstr == "v1" {
+			version = 0
+		}
+	} else {
+		// Go1.8 extensible encoding
+		// read version string and extract version number (ignore anything after the version number)
+		versionstr = p.rawStringln(b)
+		if s := strings.SplitN(versionstr, " ", 3); len(s) >= 2 && s[0] == "version" {
+			if v, err := strconv.Atoi(s[1]); err == nil && v > 0 {
+				version = v
+			}
+		}
+	}
+	p.version = version
+
+	// read version specific flags - extend as necessary
+	switch p.version {
+	// case currentVersion:
+	// 	...
+	//	fallthrough
+	case currentVersion, 5, 4, 3, 2, 1:
+		p.debugFormat = p.rawStringln(p.rawByte()) == "debug"
+		p.trackAllTypes = p.int() != 0
+		p.posInfoFormat = p.int() != 0
+	case 0:
+		// Go1.7 encoding format - nothing to do here
+	default:
+		errorf("unknown bexport format version %d (%q)", p.version, versionstr)
+	}
+
+	// --- generic export data ---
+
+	// populate typList with predeclared "known" types
+	p.typList = append(p.typList, predeclared()...)
+
+	// read package data
+	pkg = p.pkg()
+
+	// read objects of phase 1 only (see cmd/compile/internal/gc/bexport.go)
+	objcount := 0
+	for {
+		tag := p.tagOrIndex()
+		if tag == endTag {
+			break
+		}
+		p.obj(tag)
+		objcount++
+	}
+
+	// self-verification
+	if count := p.int(); count != objcount {
+		errorf("got %d objects; want %d", objcount, count)
+	}
+
+	// ignore compiler-specific import data
+
+	// complete interfaces
+	// TODO(gri) re-investigate if we still need to do this in a delayed fashion
+	for _, typ := range p.interfaceList {
+		typ.Complete()
+	}
+
+	// record all referenced packages as imports
+	list := append(([]*types.Package)(nil), p.pkgList[1:]...)
+	sort.Sort(byPath(list))
+	pkg.SetImports(list)
+
+	// package was imported completely and without errors
+	pkg.MarkComplete()
+
+	return p.read, pkg, nil
+}
+
+func errorf(format string, args ...interface{}) {
+	panic(fmt.Sprintf(format, args...))
+}
+
+func (p *importer) pkg() *types.Package {
+	// if the package was seen before, i is its index (>= 0)
+	i := p.tagOrIndex()
+	if i >= 0 {
+		return p.pkgList[i]
+	}
+
+	// otherwise, i is the package tag (< 0)
+	if i != packageTag {
+		errorf("unexpected package tag %d version %d", i, p.version)
+	}
+
+	// read package data
+	name := p.string()
+	var path string
+	if p.version >= 5 {
+		path = p.path()
+	} else {
+		path = p.string()
+	}
+	if p.version >= 6 {
+		p.int() // package height; unused by go/types
+	}
+
+	// we should never see an empty package name
+	if name == "" {
+		errorf("empty package name in import")
+	}
+
+	// an empty path denotes the package we are currently importing;
+	// it must be the first package we see
+	if (path == "") != (len(p.pkgList) == 0) {
+		errorf("package path %q for pkg index %d", path, len(p.pkgList))
+	}
+
+	// if the package was imported before, use that one; otherwise create a new one
+	if path == "" {
+		path = p.importpath
+	}
+	pkg := p.imports[path]
+	if pkg == nil {
+		pkg = types.NewPackage(path, name)
+		p.imports[path] = pkg
+	} else if pkg.Name() != name {
+		errorf("conflicting names %s and %s for package %q", pkg.Name(), name, path)
+	}
+	p.pkgList = append(p.pkgList, pkg)
+
+	return pkg
+}
+
+// objTag returns the tag value for each object kind.
+func objTag(obj types.Object) int {
+	switch obj.(type) {
+	case *types.Const:
+		return constTag
+	case *types.TypeName:
+		return typeTag
+	case *types.Var:
+		return varTag
+	case *types.Func:
+		return funcTag
+	default:
+		errorf("unexpected object: %v (%T)", obj, obj) // panics
+		panic("unreachable")
+	}
+}
+
+func sameObj(a, b types.Object) bool {
+	// Because unnamed types are not canonicalized, we cannot simply compare types for
+	// (pointer) identity.
+	// Ideally we'd check equality of constant values as well, but this is good enough.
+	return objTag(a) == objTag(b) && types.Identical(a.Type(), b.Type())
+}
+
+func (p *importer) declare(obj types.Object) {
+	pkg := obj.Pkg()
+	if alt := pkg.Scope().Insert(obj); alt != nil {
+		// This can only trigger if we import a (non-type) object a second time.
+		// Excluding type aliases, this cannot happen because 1) we only import a package
+		// once; and b) we ignore compiler-specific export data which may contain
+		// functions whose inlined function bodies refer to other functions that
+		// were already imported.
+		// However, type aliases require reexporting the original type, so we need
+		// to allow it (see also the comment in cmd/compile/internal/gc/bimport.go,
+		// method importer.obj, switch case importing functions).
+		// TODO(gri) review/update this comment once the gc compiler handles type aliases.
+		if !sameObj(obj, alt) {
+			errorf("inconsistent import:\n\t%v\npreviously imported as:\n\t%v\n", obj, alt)
+		}
+	}
+}
+
+func (p *importer) obj(tag int) {
+	switch tag {
+	case constTag:
+		pos := p.pos()
+		pkg, name := p.qualifiedName()
+		typ := p.typ(nil, nil)
+		val := p.value()
+		p.declare(types.NewConst(pos, pkg, name, typ, val))
+
+	case aliasTag:
+		// TODO(gri) verify type alias hookup is correct
+		pos := p.pos()
+		pkg, name := p.qualifiedName()
+		typ := p.typ(nil, nil)
+		p.declare(types.NewTypeName(pos, pkg, name, typ))
+
+	case typeTag:
+		p.typ(nil, nil)
+
+	case varTag:
+		pos := p.pos()
+		pkg, name := p.qualifiedName()
+		typ := p.typ(nil, nil)
+		p.declare(types.NewVar(pos, pkg, name, typ))
+
+	case funcTag:
+		pos := p.pos()
+		pkg, name := p.qualifiedName()
+		params, isddd := p.paramList()
+		result, _ := p.paramList()
+		sig := types.NewSignature(nil, params, result, isddd)
+		p.declare(types.NewFunc(pos, pkg, name, sig))
+
+	default:
+		errorf("unexpected object tag %d", tag)
+	}
+}
+
+const deltaNewFile = -64 // see cmd/compile/internal/gc/bexport.go
+
+func (p *importer) pos() token.Pos {
+	if !p.posInfoFormat {
+		return token.NoPos
+	}
+
+	file := p.prevFile
+	line := p.prevLine
+	delta := p.int()
+	line += delta
+	if p.version >= 5 {
+		if delta == deltaNewFile {
+			if n := p.int(); n >= 0 {
+				// file changed
+				file = p.path()
+				line = n
+			}
+		}
+	} else {
+		if delta == 0 {
+			if n := p.int(); n >= 0 {
+				// file changed
+				file = p.prevFile[:n] + p.string()
+				line = p.int()
+			}
+		}
+	}
+	p.prevFile = file
+	p.prevLine = line
+
+	return p.fake.pos(file, line)
+}
+
+// Synthesize a token.Pos
+type fakeFileSet struct {
+	fset  *token.FileSet
+	files map[string]*token.File
+}
+
+func (s *fakeFileSet) pos(file string, line int) token.Pos {
+	// Since we don't know the set of needed file positions, we
+	// reserve maxlines positions per file.
+	const maxlines = 64 * 1024
+	f := s.files[file]
+	if f == nil {
+		f = s.fset.AddFile(file, -1, maxlines)
+		s.files[file] = f
+		// Allocate the fake linebreak indices on first use.
+		// TODO(adonovan): opt: save ~512KB using a more complex scheme?
+		fakeLinesOnce.Do(func() {
+			fakeLines = make([]int, maxlines)
+			for i := range fakeLines {
+				fakeLines[i] = i
+			}
+		})
+		f.SetLines(fakeLines)
+	}
+
+	if line > maxlines {
+		line = 1
+	}
+
+	// Treat the file as if it contained only newlines
+	// and column=1: use the line number as the offset.
+	return f.Pos(line - 1)
+}
+
+var (
+	fakeLines     []int
+	fakeLinesOnce sync.Once
+)
+
+func (p *importer) qualifiedName() (pkg *types.Package, name string) {
+	name = p.string()
+	pkg = p.pkg()
+	return
+}
+
+func (p *importer) record(t types.Type) {
+	p.typList = append(p.typList, t)
+}
+
+// A dddSlice is a types.Type representing ...T parameters.
+// It only appears for parameter types and does not escape
+// the importer.
+type dddSlice struct {
+	elem types.Type
+}
+
+func (t *dddSlice) Underlying() types.Type { return t }
+func (t *dddSlice) String() string         { return "..." + t.elem.String() }
+
+// parent is the package which declared the type; parent == nil means
+// the package currently imported. The parent package is needed for
+// exported struct fields and interface methods which don't contain
+// explicit package information in the export data.
+//
+// A non-nil tname is used as the "owner" of the result type; i.e.,
+// the result type is the underlying type of tname. tname is used
+// to give interface methods a named receiver type where possible.
+func (p *importer) typ(parent *types.Package, tname *types.Named) types.Type {
+	// if the type was seen before, i is its index (>= 0)
+	i := p.tagOrIndex()
+	if i >= 0 {
+		return p.typList[i]
+	}
+
+	// otherwise, i is the type tag (< 0)
+	switch i {
+	case namedTag:
+		// read type object
+		pos := p.pos()
+		parent, name := p.qualifiedName()
+		scope := parent.Scope()
+		obj := scope.Lookup(name)
+
+		// if the object doesn't exist yet, create and insert it
+		if obj == nil {
+			obj = types.NewTypeName(pos, parent, name, nil)
+			scope.Insert(obj)
+		}
+
+		if _, ok := obj.(*types.TypeName); !ok {
+			errorf("pkg = %s, name = %s => %s", parent, name, obj)
+		}
+
+		// associate new named type with obj if it doesn't exist yet
+		t0 := types.NewNamed(obj.(*types.TypeName), nil, nil)
+
+		// but record the existing type, if any
+		tname := obj.Type().(*types.Named) // tname is either t0 or the existing type
+		p.record(tname)
+
+		// read underlying type
+		t0.SetUnderlying(p.typ(parent, t0))
+
+		// interfaces don't have associated methods
+		if types.IsInterface(t0) {
+			return tname
+		}
+
+		// read associated methods
+		for i := p.int(); i > 0; i-- {
+			// TODO(gri) replace this with something closer to fieldName
+			pos := p.pos()
+			name := p.string()
+			if !exported(name) {
+				p.pkg()
+			}
+
+			recv, _ := p.paramList() // TODO(gri) do we need a full param list for the receiver?
+			params, isddd := p.paramList()
+			result, _ := p.paramList()
+			p.int() // go:nointerface pragma - discarded
+
+			sig := types.NewSignature(recv.At(0), params, result, isddd)
+			t0.AddMethod(types.NewFunc(pos, parent, name, sig))
+		}
+
+		return tname
+
+	case arrayTag:
+		t := new(types.Array)
+		if p.trackAllTypes {
+			p.record(t)
+		}
+
+		n := p.int64()
+		*t = *types.NewArray(p.typ(parent, nil), n)
+		return t
+
+	case sliceTag:
+		t := new(types.Slice)
+		if p.trackAllTypes {
+			p.record(t)
+		}
+
+		*t = *types.NewSlice(p.typ(parent, nil))
+		return t
+
+	case dddTag:
+		t := new(dddSlice)
+		if p.trackAllTypes {
+			p.record(t)
+		}
+
+		t.elem = p.typ(parent, nil)
+		return t
+
+	case structTag:
+		t := new(types.Struct)
+		if p.trackAllTypes {
+			p.record(t)
+		}
+
+		*t = *types.NewStruct(p.fieldList(parent))
+		return t
+
+	case pointerTag:
+		t := new(types.Pointer)
+		if p.trackAllTypes {
+			p.record(t)
+		}
+
+		*t = *types.NewPointer(p.typ(parent, nil))
+		return t
+
+	case signatureTag:
+		t := new(types.Signature)
+		if p.trackAllTypes {
+			p.record(t)
+		}
+
+		params, isddd := p.paramList()
+		result, _ := p.paramList()
+		*t = *types.NewSignature(nil, params, result, isddd)
+		return t
+
+	case interfaceTag:
+		// Create a dummy entry in the type list. This is safe because we
+		// cannot expect the interface type to appear in a cycle, as any
+		// such cycle must contain a named type which would have been
+		// first defined earlier.
+		// TODO(gri) Is this still true now that we have type aliases?
+		// See issue #23225.
+		n := len(p.typList)
+		if p.trackAllTypes {
+			p.record(nil)
+		}
+
+		var embeddeds []types.Type
+		for n := p.int(); n > 0; n-- {
+			p.pos()
+			embeddeds = append(embeddeds, p.typ(parent, nil))
+		}
+
+		t := newInterface(p.methodList(parent, tname), embeddeds)
+		p.interfaceList = append(p.interfaceList, t)
+		if p.trackAllTypes {
+			p.typList[n] = t
+		}
+		return t
+
+	case mapTag:
+		t := new(types.Map)
+		if p.trackAllTypes {
+			p.record(t)
+		}
+
+		key := p.typ(parent, nil)
+		val := p.typ(parent, nil)
+		*t = *types.NewMap(key, val)
+		return t
+
+	case chanTag:
+		t := new(types.Chan)
+		if p.trackAllTypes {
+			p.record(t)
+		}
+
+		dir := chanDir(p.int())
+		val := p.typ(parent, nil)
+		*t = *types.NewChan(dir, val)
+		return t
+
+	default:
+		errorf("unexpected type tag %d", i) // panics
+		panic("unreachable")
+	}
+}
+
+func chanDir(d int) types.ChanDir {
+	// tag values must match the constants in cmd/compile/internal/gc/go.go
+	switch d {
+	case 1 /* Crecv */ :
+		return types.RecvOnly
+	case 2 /* Csend */ :
+		return types.SendOnly
+	case 3 /* Cboth */ :
+		return types.SendRecv
+	default:
+		errorf("unexpected channel dir %d", d)
+		return 0
+	}
+}
+
+func (p *importer) fieldList(parent *types.Package) (fields []*types.Var, tags []string) {
+	if n := p.int(); n > 0 {
+		fields = make([]*types.Var, n)
+		tags = make([]string, n)
+		for i := range fields {
+			fields[i], tags[i] = p.field(parent)
+		}
+	}
+	return
+}
+
+func (p *importer) field(parent *types.Package) (*types.Var, string) {
+	pos := p.pos()
+	pkg, name, alias := p.fieldName(parent)
+	typ := p.typ(parent, nil)
+	tag := p.string()
+
+	anonymous := false
+	if name == "" {
+		// anonymous field - typ must be T or *T and T must be a type name
+		switch typ := deref(typ).(type) {
+		case *types.Basic: // basic types are named types
+			pkg = nil // // objects defined in Universe scope have no package
+			name = typ.Name()
+		case *types.Named:
+			name = typ.Obj().Name()
+		default:
+			errorf("named base type expected")
+		}
+		anonymous = true
+	} else if alias {
+		// anonymous field: we have an explicit name because it's an alias
+		anonymous = true
+	}
+
+	return types.NewField(pos, pkg, name, typ, anonymous), tag
+}
+
+func (p *importer) methodList(parent *types.Package, baseType *types.Named) (methods []*types.Func) {
+	if n := p.int(); n > 0 {
+		methods = make([]*types.Func, n)
+		for i := range methods {
+			methods[i] = p.method(parent, baseType)
+		}
+	}
+	return
+}
+
+func (p *importer) method(parent *types.Package, baseType *types.Named) *types.Func {
+	pos := p.pos()
+	pkg, name, _ := p.fieldName(parent)
+	// If we don't have a baseType, use a nil receiver.
+	// A receiver using the actual interface type (which
+	// we don't know yet) will be filled in when we call
+	// types.Interface.Complete.
+	var recv *types.Var
+	if baseType != nil {
+		recv = types.NewVar(token.NoPos, parent, "", baseType)
+	}
+	params, isddd := p.paramList()
+	result, _ := p.paramList()
+	sig := types.NewSignature(recv, params, result, isddd)
+	return types.NewFunc(pos, pkg, name, sig)
+}
+
+func (p *importer) fieldName(parent *types.Package) (pkg *types.Package, name string, alias bool) {
+	name = p.string()
+	pkg = parent
+	if pkg == nil {
+		// use the imported package instead
+		pkg = p.pkgList[0]
+	}
+	if p.version == 0 && name == "_" {
+		// version 0 didn't export a package for _ fields
+		return
+	}
+	switch name {
+	case "":
+		// 1) field name matches base type name and is exported: nothing to do
+	case "?":
+		// 2) field name matches base type name and is not exported: need package
+		name = ""
+		pkg = p.pkg()
+	case "@":
+		// 3) field name doesn't match type name (alias)
+		name = p.string()
+		alias = true
+		fallthrough
+	default:
+		if !exported(name) {
+			pkg = p.pkg()
+		}
+	}
+	return
+}
+
+func (p *importer) paramList() (*types.Tuple, bool) {
+	n := p.int()
+	if n == 0 {
+		return nil, false
+	}
+	// negative length indicates unnamed parameters
+	named := true
+	if n < 0 {
+		n = -n
+		named = false
+	}
+	// n > 0
+	params := make([]*types.Var, n)
+	isddd := false
+	for i := range params {
+		params[i], isddd = p.param(named)
+	}
+	return types.NewTuple(params...), isddd
+}
+
+func (p *importer) param(named bool) (*types.Var, bool) {
+	t := p.typ(nil, nil)
+	td, isddd := t.(*dddSlice)
+	if isddd {
+		t = types.NewSlice(td.elem)
+	}
+
+	var pkg *types.Package
+	var name string
+	if named {
+		name = p.string()
+		if name == "" {
+			errorf("expected named parameter")
+		}
+		if name != "_" {
+			pkg = p.pkg()
+		}
+		if i := strings.Index(name, "·"); i > 0 {
+			name = name[:i] // cut off gc-specific parameter numbering
+		}
+	}
+
+	// read and discard compiler-specific info
+	p.string()
+
+	return types.NewVar(token.NoPos, pkg, name, t), isddd
+}
+
+func exported(name string) bool {
+	ch, _ := utf8.DecodeRuneInString(name)
+	return unicode.IsUpper(ch)
+}
+
+func (p *importer) value() constant.Value {
+	switch tag := p.tagOrIndex(); tag {
+	case falseTag:
+		return constant.MakeBool(false)
+	case trueTag:
+		return constant.MakeBool(true)
+	case int64Tag:
+		return constant.MakeInt64(p.int64())
+	case floatTag:
+		return p.float()
+	case complexTag:
+		re := p.float()
+		im := p.float()
+		return constant.BinaryOp(re, token.ADD, constant.MakeImag(im))
+	case stringTag:
+		return constant.MakeString(p.string())
+	case unknownTag:
+		return constant.MakeUnknown()
+	default:
+		errorf("unexpected value tag %d", tag) // panics
+		panic("unreachable")
+	}
+}
+
+func (p *importer) float() constant.Value {
+	sign := p.int()
+	if sign == 0 {
+		return constant.MakeInt64(0)
+	}
+
+	exp := p.int()
+	mant := []byte(p.string()) // big endian
+
+	// remove leading 0's if any
+	for len(mant) > 0 && mant[0] == 0 {
+		mant = mant[1:]
+	}
+
+	// convert to little endian
+	// TODO(gri) go/constant should have a more direct conversion function
+	//           (e.g., once it supports a big.Float based implementation)
+	for i, j := 0, len(mant)-1; i < j; i, j = i+1, j-1 {
+		mant[i], mant[j] = mant[j], mant[i]
+	}
+
+	// adjust exponent (constant.MakeFromBytes creates an integer value,
+	// but mant represents the mantissa bits such that 0.5 <= mant < 1.0)
+	exp -= len(mant) << 3
+	if len(mant) > 0 {
+		for msd := mant[len(mant)-1]; msd&0x80 == 0; msd <<= 1 {
+			exp++
+		}
+	}
+
+	x := constant.MakeFromBytes(mant)
+	switch {
+	case exp < 0:
+		d := constant.Shift(constant.MakeInt64(1), token.SHL, uint(-exp))
+		x = constant.BinaryOp(x, token.QUO, d)
+	case exp > 0:
+		x = constant.Shift(x, token.SHL, uint(exp))
+	}
+
+	if sign < 0 {
+		x = constant.UnaryOp(token.SUB, x, 0)
+	}
+	return x
+}
+
+// ----------------------------------------------------------------------------
+// Low-level decoders
+
+func (p *importer) tagOrIndex() int {
+	if p.debugFormat {
+		p.marker('t')
+	}
+
+	return int(p.rawInt64())
+}
+
+func (p *importer) int() int {
+	x := p.int64()
+	if int64(int(x)) != x {
+		errorf("exported integer too large")
+	}
+	return int(x)
+}
+
+func (p *importer) int64() int64 {
+	if p.debugFormat {
+		p.marker('i')
+	}
+
+	return p.rawInt64()
+}
+
+func (p *importer) path() string {
+	if p.debugFormat {
+		p.marker('p')
+	}
+	// if the path was seen before, i is its index (>= 0)
+	// (the empty string is at index 0)
+	i := p.rawInt64()
+	if i >= 0 {
+		return p.pathList[i]
+	}
+	// otherwise, i is the negative path length (< 0)
+	a := make([]string, -i)
+	for n := range a {
+		a[n] = p.string()
+	}
+	s := strings.Join(a, "/")
+	p.pathList = append(p.pathList, s)
+	return s
+}
+
+func (p *importer) string() string {
+	if p.debugFormat {
+		p.marker('s')
+	}
+	// if the string was seen before, i is its index (>= 0)
+	// (the empty string is at index 0)
+	i := p.rawInt64()
+	if i >= 0 {
+		return p.strList[i]
+	}
+	// otherwise, i is the negative string length (< 0)
+	if n := int(-i); n <= cap(p.buf) {
+		p.buf = p.buf[:n]
+	} else {
+		p.buf = make([]byte, n)
+	}
+	for i := range p.buf {
+		p.buf[i] = p.rawByte()
+	}
+	s := string(p.buf)
+	p.strList = append(p.strList, s)
+	return s
+}
+
+func (p *importer) marker(want byte) {
+	if got := p.rawByte(); got != want {
+		errorf("incorrect marker: got %c; want %c (pos = %d)", got, want, p.read)
+	}
+
+	pos := p.read
+	if n := int(p.rawInt64()); n != pos {
+		errorf("incorrect position: got %d; want %d", n, pos)
+	}
+}
+
+// rawInt64 should only be used by low-level decoders.
+func (p *importer) rawInt64() int64 {
+	i, err := binary.ReadVarint(p)
+	if err != nil {
+		errorf("read error: %v", err)
+	}
+	return i
+}
+
+// rawStringln should only be used to read the initial version string.
+func (p *importer) rawStringln(b byte) string {
+	p.buf = p.buf[:0]
+	for b != '\n' {
+		p.buf = append(p.buf, b)
+		b = p.rawByte()
+	}
+	return string(p.buf)
+}
+
+// needed for binary.ReadVarint in rawInt64
+func (p *importer) ReadByte() (byte, error) {
+	return p.rawByte(), nil
+}
+
+// byte is the bottleneck interface for reading p.data.
+// It unescapes '|' 'S' to '$' and '|' '|' to '|'.
+// rawByte should only be used by low-level decoders.
+func (p *importer) rawByte() byte {
+	b := p.data[0]
+	r := 1
+	if b == '|' {
+		b = p.data[1]
+		r = 2
+		switch b {
+		case 'S':
+			b = '$'
+		case '|':
+			// nothing to do
+		default:
+			errorf("unexpected escape sequence in export data")
+		}
+	}
+	p.data = p.data[r:]
+	p.read += r
+	return b
+
+}
+
+// ----------------------------------------------------------------------------
+// Export format
+
+// Tags. Must be < 0.
+const (
+	// Objects
+	packageTag = -(iota + 1)
+	constTag
+	typeTag
+	varTag
+	funcTag
+	endTag
+
+	// Types
+	namedTag
+	arrayTag
+	sliceTag
+	dddTag
+	structTag
+	pointerTag
+	signatureTag
+	interfaceTag
+	mapTag
+	chanTag
+
+	// Values
+	falseTag
+	trueTag
+	int64Tag
+	floatTag
+	fractionTag // not used by gc
+	complexTag
+	stringTag
+	nilTag     // only used by gc (appears in exported inlined function bodies)
+	unknownTag // not used by gc (only appears in packages with errors)
+
+	// Type aliases
+	aliasTag
+)
+
+var predeclOnce sync.Once
+var predecl []types.Type // initialized lazily
+
+func predeclared() []types.Type {
+	predeclOnce.Do(func() {
+		// initialize lazily to be sure that all
+		// elements have been initialized before
+		predecl = []types.Type{ // basic types
+			types.Typ[types.Bool],
+			types.Typ[types.Int],
+			types.Typ[types.Int8],
+			types.Typ[types.Int16],
+			types.Typ[types.Int32],
+			types.Typ[types.Int64],
+			types.Typ[types.Uint],
+			types.Typ[types.Uint8],
+			types.Typ[types.Uint16],
+			types.Typ[types.Uint32],
+			types.Typ[types.Uint64],
+			types.Typ[types.Uintptr],
+			types.Typ[types.Float32],
+			types.Typ[types.Float64],
+			types.Typ[types.Complex64],
+			types.Typ[types.Complex128],
+			types.Typ[types.String],
+
+			// basic type aliases
+			types.Universe.Lookup("byte").Type(),
+			types.Universe.Lookup("rune").Type(),
+
+			// error
+			types.Universe.Lookup("error").Type(),
+
+			// untyped types
+			types.Typ[types.UntypedBool],
+			types.Typ[types.UntypedInt],
+			types.Typ[types.UntypedRune],
+			types.Typ[types.UntypedFloat],
+			types.Typ[types.UntypedComplex],
+			types.Typ[types.UntypedString],
+			types.Typ[types.UntypedNil],
+
+			// package unsafe
+			types.Typ[types.UnsafePointer],
+
+			// invalid type
+			types.Typ[types.Invalid], // only appears in packages with errors
+
+			// used internally by gc; never used by this package or in .a files
+			anyType{},
+		}
+	})
+	return predecl
+}
+
+type anyType struct{}
+
+func (t anyType) Underlying() types.Type { return t }
+func (t anyType) String() string         { return "any" }
diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/exportdata.go b/vendor/golang.org/x/tools/go/internal/gcimporter/exportdata.go
new file mode 100644
index 0000000000..f33dc5613e
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/internal/gcimporter/exportdata.go
@@ -0,0 +1,93 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This file is a copy of $GOROOT/src/go/internal/gcimporter/exportdata.go.
+
+// This file implements FindExportData.
+
+package gcimporter
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"strconv"
+	"strings"
+)
+
+func readGopackHeader(r *bufio.Reader) (name string, size int, err error) {
+	// See $GOROOT/include/ar.h.
+	hdr := make([]byte, 16+12+6+6+8+10+2)
+	_, err = io.ReadFull(r, hdr)
+	if err != nil {
+		return
+	}
+	// leave for debugging
+	if false {
+		fmt.Printf("header: %s", hdr)
+	}
+	s := strings.TrimSpace(string(hdr[16+12+6+6+8:][:10]))
+	size, err = strconv.Atoi(s)
+	if err != nil || hdr[len(hdr)-2] != '`' || hdr[len(hdr)-1] != '\n' {
+		err = fmt.Errorf("invalid archive header")
+		return
+	}
+	name = strings.TrimSpace(string(hdr[:16]))
+	return
+}
+
+// FindExportData positions the reader r at the beginning of the
+// export data section of an underlying GC-created object/archive
+// file by reading from it. The reader must be positioned at the
+// start of the file before calling this function. The hdr result
+// is the string before the export data, either "$$" or "$$B".
+//
+func FindExportData(r *bufio.Reader) (hdr string, err error) {
+	// Read first line to make sure this is an object file.
+	line, err := r.ReadSlice('\n')
+	if err != nil {
+		err = fmt.Errorf("can't find export data (%v)", err)
+		return
+	}
+
+	if string(line) == "!<arch>\n" {
+		// Archive file. Scan to __.PKGDEF.
+		var name string
+		if name, _, err = readGopackHeader(r); err != nil {
+			return
+		}
+
+		// First entry should be __.PKGDEF.
+		if name != "__.PKGDEF" {
+			err = fmt.Errorf("go archive is missing __.PKGDEF")
+			return
+		}
+
+		// Read first line of __.PKGDEF data, so that line
+		// is once again the first line of the input.
+		if line, err = r.ReadSlice('\n'); err != nil {
+			err = fmt.Errorf("can't find export data (%v)", err)
+			return
+		}
+	}
+
+	// Now at __.PKGDEF in archive or still at beginning of file.
+	// Either way, line should begin with "go object ".
+	if !strings.HasPrefix(string(line), "go object ") {
+		err = fmt.Errorf("not a Go object file")
+		return
+	}
+
+	// Skip over object header to export data.
+	// Begins after first line starting with $$.
+	for line[0] != '$' {
+		if line, err = r.ReadSlice('\n'); err != nil {
+			err = fmt.Errorf("can't find export data (%v)", err)
+			return
+		}
+	}
+	hdr = string(line)
+
+	return
+}
diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/gcimporter.go b/vendor/golang.org/x/tools/go/internal/gcimporter/gcimporter.go
new file mode 100644
index 0000000000..9cf186605f
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/internal/gcimporter/gcimporter.go
@@ -0,0 +1,1078 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This file is a modified copy of $GOROOT/src/go/internal/gcimporter/gcimporter.go,
+// but it also contains the original source-based importer code for Go1.6.
+// Once we stop supporting 1.6, we can remove that code.
+
+// Package gcimporter provides various functions for reading
+// gc-generated object files that can be used to implement the
+// Importer interface defined by the Go 1.5 standard library package.
+package gcimporter // import "golang.org/x/tools/go/internal/gcimporter"
+
+import (
+	"bufio"
+	"errors"
+	"fmt"
+	"go/build"
+	"go/constant"
+	"go/token"
+	"go/types"
+	"io"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"sort"
+	"strconv"
+	"strings"
+	"text/scanner"
+)
+
+// debugging/development support
+const debug = false
+
+var pkgExts = [...]string{".a", ".o"}
+
+// FindPkg returns the filename and unique package id for an import
+// path based on package information provided by build.Import (using
+// the build.Default build.Context). A relative srcDir is interpreted
+// relative to the current working directory.
+// If no file was found, an empty filename is returned.
+//
+func FindPkg(path, srcDir string) (filename, id string) {
+	if path == "" {
+		return
+	}
+
+	var noext string
+	switch {
+	default:
+		// "x" -> "$GOPATH/pkg/$GOOS_$GOARCH/x.ext", "x"
+		// Don't require the source files to be present.
+		if abs, err := filepath.Abs(srcDir); err == nil { // see issue 14282
+			srcDir = abs
+		}
+		bp, _ := build.Import(path, srcDir, build.FindOnly|build.AllowBinary)
+		if bp.PkgObj == "" {
+			id = path // make sure we have an id to print in error message
+			return
+		}
+		noext = strings.TrimSuffix(bp.PkgObj, ".a")
+		id = bp.ImportPath
+
+	case build.IsLocalImport(path):
+		// "./x" -> "/this/directory/x.ext", "/this/directory/x"
+		noext = filepath.Join(srcDir, path)
+		id = noext
+
+	case filepath.IsAbs(path):
+		// for completeness only - go/build.Import
+		// does not support absolute imports
+		// "/x" -> "/x.ext", "/x"
+		noext = path
+		id = path
+	}
+
+	if false { // for debugging
+		if path != id {
+			fmt.Printf("%s -> %s\n", path, id)
+		}
+	}
+
+	// try extensions
+	for _, ext := range pkgExts {
+		filename = noext + ext
+		if f, err := os.Stat(filename); err == nil && !f.IsDir() {
+			return
+		}
+	}
+
+	filename = "" // not found
+	return
+}
+
+// ImportData imports a package by reading the gc-generated export data,
+// adds the corresponding package object to the packages map indexed by id,
+// and returns the object.
+//
+// The packages map must contains all packages already imported. The data
+// reader position must be the beginning of the export data section. The
+// filename is only used in error messages.
+//
+// If packages[id] contains the completely imported package, that package
+// can be used directly, and there is no need to call this function (but
+// there is also no harm but for extra time used).
+//
+func ImportData(packages map[string]*types.Package, filename, id string, data io.Reader) (pkg *types.Package, err error) {
+	// support for parser error handling
+	defer func() {
+		switch r := recover().(type) {
+		case nil:
+			// nothing to do
+		case importError:
+			err = r
+		default:
+			panic(r) // internal error
+		}
+	}()
+
+	var p parser
+	p.init(filename, id, data, packages)
+	pkg = p.parseExport()
+
+	return
+}
+
+// Import imports a gc-generated package given its import path and srcDir, adds
+// the corresponding package object to the packages map, and returns the object.
+// The packages map must contain all packages already imported.
+//
+func Import(packages map[string]*types.Package, path, srcDir string, lookup func(path string) (io.ReadCloser, error)) (pkg *types.Package, err error) {
+	var rc io.ReadCloser
+	var filename, id string
+	if lookup != nil {
+		// With custom lookup specified, assume that caller has
+		// converted path to a canonical import path for use in the map.
+		if path == "unsafe" {
+			return types.Unsafe, nil
+		}
+		id = path
+
+		// No need to re-import if the package was imported completely before.
+		if pkg = packages[id]; pkg != nil && pkg.Complete() {
+			return
+		}
+		f, err := lookup(path)
+		if err != nil {
+			return nil, err
+		}
+		rc = f
+	} else {
+		filename, id = FindPkg(path, srcDir)
+		if filename == "" {
+			if path == "unsafe" {
+				return types.Unsafe, nil
+			}
+			return nil, fmt.Errorf("can't find import: %q", id)
+		}
+
+		// no need to re-import if the package was imported completely before
+		if pkg = packages[id]; pkg != nil && pkg.Complete() {
+			return
+		}
+
+		// open file
+		f, err := os.Open(filename)
+		if err != nil {
+			return nil, err
+		}
+		defer func() {
+			if err != nil {
+				// add file name to error
+				err = fmt.Errorf("%s: %v", filename, err)
+			}
+		}()
+		rc = f
+	}
+	defer rc.Close()
+
+	var hdr string
+	buf := bufio.NewReader(rc)
+	if hdr, err = FindExportData(buf); err != nil {
+		return
+	}
+
+	switch hdr {
+	case "$$\n":
+		// Work-around if we don't have a filename; happens only if lookup != nil.
+		// Either way, the filename is only needed for importer error messages, so
+		// this is fine.
+		if filename == "" {
+			filename = path
+		}
+		return ImportData(packages, filename, id, buf)
+
+	case "$$B\n":
+		var data []byte
+		data, err = ioutil.ReadAll(buf)
+		if err != nil {
+			break
+		}
+
+		// TODO(gri): allow clients of go/importer to provide a FileSet.
+		// Or, define a new standard go/types/gcexportdata package.
+		fset := token.NewFileSet()
+
+		// The indexed export format starts with an 'i'; the older
+		// binary export format starts with a 'c', 'd', or 'v'
+		// (from "version"). Select appropriate importer.
+		if len(data) > 0 && data[0] == 'i' {
+			_, pkg, err = IImportData(fset, packages, data[1:], id)
+		} else {
+			_, pkg, err = BImportData(fset, packages, data, id)
+		}
+
+	default:
+		err = fmt.Errorf("unknown export data header: %q", hdr)
+	}
+
+	return
+}
+
+// ----------------------------------------------------------------------------
+// Parser
+
+// TODO(gri) Imported objects don't have position information.
+//           Ideally use the debug table line info; alternatively
+//           create some fake position (or the position of the
+//           import). That way error messages referring to imported
+//           objects can print meaningful information.
+
+// parser parses the exports inside a gc compiler-produced
+// object/archive file and populates its scope with the results.
+type parser struct {
+	scanner    scanner.Scanner
+	tok        rune                      // current token
+	lit        string                    // literal string; only valid for Ident, Int, String tokens
+	id         string                    // package id of imported package
+	sharedPkgs map[string]*types.Package // package id -> package object (across importer)
+	localPkgs  map[string]*types.Package // package id -> package object (just this package)
+}
+
+func (p *parser) init(filename, id string, src io.Reader, packages map[string]*types.Package) {
+	p.scanner.Init(src)
+	p.scanner.Error = func(_ *scanner.Scanner, msg string) { p.error(msg) }
+	p.scanner.Mode = scanner.ScanIdents | scanner.ScanInts | scanner.ScanChars | scanner.ScanStrings | scanner.ScanComments | scanner.SkipComments
+	p.scanner.Whitespace = 1<<'\t' | 1<<' '
+	p.scanner.Filename = filename // for good error messages
+	p.next()
+	p.id = id
+	p.sharedPkgs = packages
+	if debug {
+		// check consistency of packages map
+		for _, pkg := range packages {
+			if pkg.Name() == "" {
+				fmt.Printf("no package name for %s\n", pkg.Path())
+			}
+		}
+	}
+}
+
+func (p *parser) next() {
+	p.tok = p.scanner.Scan()
+	switch p.tok {
+	case scanner.Ident, scanner.Int, scanner.Char, scanner.String, '·':
+		p.lit = p.scanner.TokenText()
+	default:
+		p.lit = ""
+	}
+	if debug {
+		fmt.Printf("%s: %q -> %q\n", scanner.TokenString(p.tok), p.scanner.TokenText(), p.lit)
+	}
+}
+
+func declTypeName(pkg *types.Package, name string) *types.TypeName {
+	scope := pkg.Scope()
+	if obj := scope.Lookup(name); obj != nil {
+		return obj.(*types.TypeName)
+	}
+	obj := types.NewTypeName(token.NoPos, pkg, name, nil)
+	// a named type may be referred to before the underlying type
+	// is known - set it up
+	types.NewNamed(obj, nil, nil)
+	scope.Insert(obj)
+	return obj
+}
+
+// ----------------------------------------------------------------------------
+// Error handling
+
+// Internal errors are boxed as importErrors.
+type importError struct {
+	pos scanner.Position
+	err error
+}
+
+func (e importError) Error() string {
+	return fmt.Sprintf("import error %s (byte offset = %d): %s", e.pos, e.pos.Offset, e.err)
+}
+
+func (p *parser) error(err interface{}) {
+	if s, ok := err.(string); ok {
+		err = errors.New(s)
+	}
+	// panic with a runtime.Error if err is not an error
+	panic(importError{p.scanner.Pos(), err.(error)})
+}
+
+func (p *parser) errorf(format string, args ...interface{}) {
+	p.error(fmt.Sprintf(format, args...))
+}
+
+func (p *parser) expect(tok rune) string {
+	lit := p.lit
+	if p.tok != tok {
+		p.errorf("expected %s, got %s (%s)", scanner.TokenString(tok), scanner.TokenString(p.tok), lit)
+	}
+	p.next()
+	return lit
+}
+
+func (p *parser) expectSpecial(tok string) {
+	sep := 'x' // not white space
+	i := 0
+	for i < len(tok) && p.tok == rune(tok[i]) && sep > ' ' {
+		sep = p.scanner.Peek() // if sep <= ' ', there is white space before the next token
+		p.next()
+		i++
+	}
+	if i < len(tok) {
+		p.errorf("expected %q, got %q", tok, tok[0:i])
+	}
+}
+
+func (p *parser) expectKeyword(keyword string) {
+	lit := p.expect(scanner.Ident)
+	if lit != keyword {
+		p.errorf("expected keyword %s, got %q", keyword, lit)
+	}
+}
+
+// ----------------------------------------------------------------------------
+// Qualified and unqualified names
+
+// PackageId = string_lit .
+//
+func (p *parser) parsePackageId() string {
+	id, err := strconv.Unquote(p.expect(scanner.String))
+	if err != nil {
+		p.error(err)
+	}
+	// id == "" stands for the imported package id
+	// (only known at time of package installation)
+	if id == "" {
+		id = p.id
+	}
+	return id
+}
+
+// PackageName = ident .
+//
+func (p *parser) parsePackageName() string {
+	return p.expect(scanner.Ident)
+}
+
+// dotIdentifier = ( ident | '·' ) { ident | int | '·' } .
+func (p *parser) parseDotIdent() string {
+	ident := ""
+	if p.tok != scanner.Int {
+		sep := 'x' // not white space
+		for (p.tok == scanner.Ident || p.tok == scanner.Int || p.tok == '·') && sep > ' ' {
+			ident += p.lit
+			sep = p.scanner.Peek() // if sep <= ' ', there is white space before the next token
+			p.next()
+		}
+	}
+	if ident == "" {
+		p.expect(scanner.Ident) // use expect() for error handling
+	}
+	return ident
+}
+
+// QualifiedName = "@" PackageId "." ( "?" | dotIdentifier ) .
+//
+func (p *parser) parseQualifiedName() (id, name string) {
+	p.expect('@')
+	id = p.parsePackageId()
+	p.expect('.')
+	// Per rev f280b8a485fd (10/2/2013), qualified names may be used for anonymous fields.
+	if p.tok == '?' {
+		p.next()
+	} else {
+		name = p.parseDotIdent()
+	}
+	return
+}
+
+// getPkg returns the package for a given id. If the package is
+// not found, create the package and add it to the p.localPkgs
+// and p.sharedPkgs maps. name is the (expected) name of the
+// package. If name == "", the package name is expected to be
+// set later via an import clause in the export data.
+//
+// id identifies a package, usually by a canonical package path like
+// "encoding/json" but possibly by a non-canonical import path like
+// "./json".
+//
+func (p *parser) getPkg(id, name string) *types.Package {
+	// package unsafe is not in the packages maps - handle explicitly
+	if id == "unsafe" {
+		return types.Unsafe
+	}
+
+	pkg := p.localPkgs[id]
+	if pkg == nil {
+		// first import of id from this package
+		pkg = p.sharedPkgs[id]
+		if pkg == nil {
+			// first import of id by this importer;
+			// add (possibly unnamed) pkg to shared packages
+			pkg = types.NewPackage(id, name)
+			p.sharedPkgs[id] = pkg
+		}
+		// add (possibly unnamed) pkg to local packages
+		if p.localPkgs == nil {
+			p.localPkgs = make(map[string]*types.Package)
+		}
+		p.localPkgs[id] = pkg
+	} else if name != "" {
+		// package exists already and we have an expected package name;
+		// make sure names match or set package name if necessary
+		if pname := pkg.Name(); pname == "" {
+			pkg.SetName(name)
+		} else if pname != name {
+			p.errorf("%s package name mismatch: %s (given) vs %s (expected)", id, pname, name)
+		}
+	}
+	return pkg
+}
+
+// parseExportedName is like parseQualifiedName, but
+// the package id is resolved to an imported *types.Package.
+//
+func (p *parser) parseExportedName() (pkg *types.Package, name string) {
+	id, name := p.parseQualifiedName()
+	pkg = p.getPkg(id, "")
+	return
+}
+
+// ----------------------------------------------------------------------------
+// Types
+
+// BasicType = identifier .
+//
+func (p *parser) parseBasicType() types.Type {
+	id := p.expect(scanner.Ident)
+	obj := types.Universe.Lookup(id)
+	if obj, ok := obj.(*types.TypeName); ok {
+		return obj.Type()
+	}
+	p.errorf("not a basic type: %s", id)
+	return nil
+}
+
+// ArrayType = "[" int_lit "]" Type .
+//
+func (p *parser) parseArrayType(parent *types.Package) types.Type {
+	// "[" already consumed and lookahead known not to be "]"
+	lit := p.expect(scanner.Int)
+	p.expect(']')
+	elem := p.parseType(parent)
+	n, err := strconv.ParseInt(lit, 10, 64)
+	if err != nil {
+		p.error(err)
+	}
+	return types.NewArray(elem, n)
+}
+
+// MapType = "map" "[" Type "]" Type .
+//
+func (p *parser) parseMapType(parent *types.Package) types.Type {
+	p.expectKeyword("map")
+	p.expect('[')
+	key := p.parseType(parent)
+	p.expect(']')
+	elem := p.parseType(parent)
+	return types.NewMap(key, elem)
+}
+
+// Name = identifier | "?" | QualifiedName .
+//
+// For unqualified and anonymous names, the returned package is the parent
+// package unless parent == nil, in which case the returned package is the
+// package being imported. (The parent package is not nil if the the name
+// is an unqualified struct field or interface method name belonging to a
+// type declared in another package.)
+//
+// For qualified names, the returned package is nil (and not created if
+// it doesn't exist yet) unless materializePkg is set (which creates an
+// unnamed package with valid package path). In the latter case, a
+// subsequent import clause is expected to provide a name for the package.
+//
+func (p *parser) parseName(parent *types.Package, materializePkg bool) (pkg *types.Package, name string) {
+	pkg = parent
+	if pkg == nil {
+		pkg = p.sharedPkgs[p.id]
+	}
+	switch p.tok {
+	case scanner.Ident:
+		name = p.lit
+		p.next()
+	case '?':
+		// anonymous
+		p.next()
+	case '@':
+		// exported name prefixed with package path
+		pkg = nil
+		var id string
+		id, name = p.parseQualifiedName()
+		if materializePkg {
+			pkg = p.getPkg(id, "")
+		}
+	default:
+		p.error("name expected")
+	}
+	return
+}
+
+func deref(typ types.Type) types.Type {
+	if p, _ := typ.(*types.Pointer); p != nil {
+		return p.Elem()
+	}
+	return typ
+}
+
+// Field = Name Type [ string_lit ] .
+//
+func (p *parser) parseField(parent *types.Package) (*types.Var, string) {
+	pkg, name := p.parseName(parent, true)
+
+	if name == "_" {
+		// Blank fields should be package-qualified because they
+		// are unexported identifiers, but gc does not qualify them.
+		// Assuming that the ident belongs to the current package
+		// causes types to change during re-exporting, leading
+		// to spurious "can't assign A to B" errors from go/types.
+		// As a workaround, pretend all blank fields belong
+		// to the same unique dummy package.
+		const blankpkg = "<_>"
+		pkg = p.getPkg(blankpkg, blankpkg)
+	}
+
+	typ := p.parseType(parent)
+	anonymous := false
+	if name == "" {
+		// anonymous field - typ must be T or *T and T must be a type name
+		switch typ := deref(typ).(type) {
+		case *types.Basic: // basic types are named types
+			pkg = nil // objects defined in Universe scope have no package
+			name = typ.Name()
+		case *types.Named:
+			name = typ.Obj().Name()
+		default:
+			p.errorf("anonymous field expected")
+		}
+		anonymous = true
+	}
+	tag := ""
+	if p.tok == scanner.String {
+		s := p.expect(scanner.String)
+		var err error
+		tag, err = strconv.Unquote(s)
+		if err != nil {
+			p.errorf("invalid struct tag %s: %s", s, err)
+		}
+	}
+	return types.NewField(token.NoPos, pkg, name, typ, anonymous), tag
+}
+
+// StructType = "struct" "{" [ FieldList ] "}" .
+// FieldList  = Field { ";" Field } .
+//
+func (p *parser) parseStructType(parent *types.Package) types.Type {
+	var fields []*types.Var
+	var tags []string
+
+	p.expectKeyword("struct")
+	p.expect('{')
+	for i := 0; p.tok != '}' && p.tok != scanner.EOF; i++ {
+		if i > 0 {
+			p.expect(';')
+		}
+		fld, tag := p.parseField(parent)
+		if tag != "" && tags == nil {
+			tags = make([]string, i)
+		}
+		if tags != nil {
+			tags = append(tags, tag)
+		}
+		fields = append(fields, fld)
+	}
+	p.expect('}')
+
+	return types.NewStruct(fields, tags)
+}
+
+// Parameter = ( identifier | "?" ) [ "..." ] Type [ string_lit ] .
+//
+func (p *parser) parseParameter() (par *types.Var, isVariadic bool) {
+	_, name := p.parseName(nil, false)
+	// remove gc-specific parameter numbering
+	if i := strings.Index(name, "·"); i >= 0 {
+		name = name[:i]
+	}
+	if p.tok == '.' {
+		p.expectSpecial("...")
+		isVariadic = true
+	}
+	typ := p.parseType(nil)
+	if isVariadic {
+		typ = types.NewSlice(typ)
+	}
+	// ignore argument tag (e.g. "noescape")
+	if p.tok == scanner.String {
+		p.next()
+	}
+	// TODO(gri) should we provide a package?
+	par = types.NewVar(token.NoPos, nil, name, typ)
+	return
+}
+
+// Parameters    = "(" [ ParameterList ] ")" .
+// ParameterList = { Parameter "," } Parameter .
+//
+func (p *parser) parseParameters() (list []*types.Var, isVariadic bool) {
+	p.expect('(')
+	for p.tok != ')' && p.tok != scanner.EOF {
+		if len(list) > 0 {
+			p.expect(',')
+		}
+		par, variadic := p.parseParameter()
+		list = append(list, par)
+		if variadic {
+			if isVariadic {
+				p.error("... not on final argument")
+			}
+			isVariadic = true
+		}
+	}
+	p.expect(')')
+
+	return
+}
+
+// Signature = Parameters [ Result ] .
+// Result    = Type | Parameters .
+//
+func (p *parser) parseSignature(recv *types.Var) *types.Signature {
+	params, isVariadic := p.parseParameters()
+
+	// optional result type
+	var results []*types.Var
+	if p.tok == '(' {
+		var variadic bool
+		results, variadic = p.parseParameters()
+		if variadic {
+			p.error("... not permitted on result type")
+		}
+	}
+
+	return types.NewSignature(recv, types.NewTuple(params...), types.NewTuple(results...), isVariadic)
+}
+
+// InterfaceType = "interface" "{" [ MethodList ] "}" .
+// MethodList    = Method { ";" Method } .
+// Method        = Name Signature .
+//
+// The methods of embedded interfaces are always "inlined"
+// by the compiler and thus embedded interfaces are never
+// visible in the export data.
+//
+func (p *parser) parseInterfaceType(parent *types.Package) types.Type {
+	var methods []*types.Func
+
+	p.expectKeyword("interface")
+	p.expect('{')
+	for i := 0; p.tok != '}' && p.tok != scanner.EOF; i++ {
+		if i > 0 {
+			p.expect(';')
+		}
+		pkg, name := p.parseName(parent, true)
+		sig := p.parseSignature(nil)
+		methods = append(methods, types.NewFunc(token.NoPos, pkg, name, sig))
+	}
+	p.expect('}')
+
+	// Complete requires the type's embedded interfaces to be fully defined,
+	// but we do not define any
+	return types.NewInterface(methods, nil).Complete()
+}
+
+// ChanType = ( "chan" [ "<-" ] | "<-" "chan" ) Type .
+//
+func (p *parser) parseChanType(parent *types.Package) types.Type {
+	dir := types.SendRecv
+	if p.tok == scanner.Ident {
+		p.expectKeyword("chan")
+		if p.tok == '<' {
+			p.expectSpecial("<-")
+			dir = types.SendOnly
+		}
+	} else {
+		p.expectSpecial("<-")
+		p.expectKeyword("chan")
+		dir = types.RecvOnly
+	}
+	elem := p.parseType(parent)
+	return types.NewChan(dir, elem)
+}
+
+// Type =
+//	BasicType | TypeName | ArrayType | SliceType | StructType |
+//      PointerType | FuncType | InterfaceType | MapType | ChanType |
+//      "(" Type ")" .
+//
+// BasicType   = ident .
+// TypeName    = ExportedName .
+// SliceType   = "[" "]" Type .
+// PointerType = "*" Type .
+// FuncType    = "func" Signature .
+//
+func (p *parser) parseType(parent *types.Package) types.Type {
+	switch p.tok {
+	case scanner.Ident:
+		switch p.lit {
+		default:
+			return p.parseBasicType()
+		case "struct":
+			return p.parseStructType(parent)
+		case "func":
+			// FuncType
+			p.next()
+			return p.parseSignature(nil)
+		case "interface":
+			return p.parseInterfaceType(parent)
+		case "map":
+			return p.parseMapType(parent)
+		case "chan":
+			return p.parseChanType(parent)
+		}
+	case '@':
+		// TypeName
+		pkg, name := p.parseExportedName()
+		return declTypeName(pkg, name).Type()
+	case '[':
+		p.next() // look ahead
+		if p.tok == ']' {
+			// SliceType
+			p.next()
+			return types.NewSlice(p.parseType(parent))
+		}
+		return p.parseArrayType(parent)
+	case '*':
+		// PointerType
+		p.next()
+		return types.NewPointer(p.parseType(parent))
+	case '<':
+		return p.parseChanType(parent)
+	case '(':
+		// "(" Type ")"
+		p.next()
+		typ := p.parseType(parent)
+		p.expect(')')
+		return typ
+	}
+	p.errorf("expected type, got %s (%q)", scanner.TokenString(p.tok), p.lit)
+	return nil
+}
+
+// ----------------------------------------------------------------------------
+// Declarations
+
+// ImportDecl = "import" PackageName PackageId .
+//
+func (p *parser) parseImportDecl() {
+	p.expectKeyword("import")
+	name := p.parsePackageName()
+	p.getPkg(p.parsePackageId(), name)
+}
+
+// int_lit = [ "+" | "-" ] { "0" ... "9" } .
+//
+func (p *parser) parseInt() string {
+	s := ""
+	switch p.tok {
+	case '-':
+		s = "-"
+		p.next()
+	case '+':
+		p.next()
+	}
+	return s + p.expect(scanner.Int)
+}
+
+// number = int_lit [ "p" int_lit ] .
+//
+func (p *parser) parseNumber() (typ *types.Basic, val constant.Value) {
+	// mantissa
+	mant := constant.MakeFromLiteral(p.parseInt(), token.INT, 0)
+	if mant == nil {
+		panic("invalid mantissa")
+	}
+
+	if p.lit == "p" {
+		// exponent (base 2)
+		p.next()
+		exp, err := strconv.ParseInt(p.parseInt(), 10, 0)
+		if err != nil {
+			p.error(err)
+		}
+		if exp < 0 {
+			denom := constant.MakeInt64(1)
+			denom = constant.Shift(denom, token.SHL, uint(-exp))
+			typ = types.Typ[types.UntypedFloat]
+			val = constant.BinaryOp(mant, token.QUO, denom)
+			return
+		}
+		if exp > 0 {
+			mant = constant.Shift(mant, token.SHL, uint(exp))
+		}
+		typ = types.Typ[types.UntypedFloat]
+		val = mant
+		return
+	}
+
+	typ = types.Typ[types.UntypedInt]
+	val = mant
+	return
+}
+
+// ConstDecl   = "const" ExportedName [ Type ] "=" Literal .
+// Literal     = bool_lit | int_lit | float_lit | complex_lit | rune_lit | string_lit .
+// bool_lit    = "true" | "false" .
+// complex_lit = "(" float_lit "+" float_lit "i" ")" .
+// rune_lit    = "(" int_lit "+" int_lit ")" .
+// string_lit  = `"` { unicode_char } `"` .
+//
+func (p *parser) parseConstDecl() {
+	p.expectKeyword("const")
+	pkg, name := p.parseExportedName()
+
+	var typ0 types.Type
+	if p.tok != '=' {
+		// constant types are never structured - no need for parent type
+		typ0 = p.parseType(nil)
+	}
+
+	p.expect('=')
+	var typ types.Type
+	var val constant.Value
+	switch p.tok {
+	case scanner.Ident:
+		// bool_lit
+		if p.lit != "true" && p.lit != "false" {
+			p.error("expected true or false")
+		}
+		typ = types.Typ[types.UntypedBool]
+		val = constant.MakeBool(p.lit == "true")
+		p.next()
+
+	case '-', scanner.Int:
+		// int_lit
+		typ, val = p.parseNumber()
+
+	case '(':
+		// complex_lit or rune_lit
+		p.next()
+		if p.tok == scanner.Char {
+			p.next()
+			p.expect('+')
+			typ = types.Typ[types.UntypedRune]
+			_, val = p.parseNumber()
+			p.expect(')')
+			break
+		}
+		_, re := p.parseNumber()
+		p.expect('+')
+		_, im := p.parseNumber()
+		p.expectKeyword("i")
+		p.expect(')')
+		typ = types.Typ[types.UntypedComplex]
+		val = constant.BinaryOp(re, token.ADD, constant.MakeImag(im))
+
+	case scanner.Char:
+		// rune_lit
+		typ = types.Typ[types.UntypedRune]
+		val = constant.MakeFromLiteral(p.lit, token.CHAR, 0)
+		p.next()
+
+	case scanner.String:
+		// string_lit
+		typ = types.Typ[types.UntypedString]
+		val = constant.MakeFromLiteral(p.lit, token.STRING, 0)
+		p.next()
+
+	default:
+		p.errorf("expected literal got %s", scanner.TokenString(p.tok))
+	}
+
+	if typ0 == nil {
+		typ0 = typ
+	}
+
+	pkg.Scope().Insert(types.NewConst(token.NoPos, pkg, name, typ0, val))
+}
+
+// TypeDecl = "type" ExportedName Type .
+//
+func (p *parser) parseTypeDecl() {
+	p.expectKeyword("type")
+	pkg, name := p.parseExportedName()
+	obj := declTypeName(pkg, name)
+
+	// The type object may have been imported before and thus already
+	// have a type associated with it. We still need to parse the type
+	// structure, but throw it away if the object already has a type.
+	// This ensures that all imports refer to the same type object for
+	// a given type declaration.
+	typ := p.parseType(pkg)
+
+	if name := obj.Type().(*types.Named); name.Underlying() == nil {
+		name.SetUnderlying(typ)
+	}
+}
+
+// VarDecl = "var" ExportedName Type .
+//
+func (p *parser) parseVarDecl() {
+	p.expectKeyword("var")
+	pkg, name := p.parseExportedName()
+	typ := p.parseType(pkg)
+	pkg.Scope().Insert(types.NewVar(token.NoPos, pkg, name, typ))
+}
+
+// Func = Signature [ Body ] .
+// Body = "{" ... "}" .
+//
+func (p *parser) parseFunc(recv *types.Var) *types.Signature {
+	sig := p.parseSignature(recv)
+	if p.tok == '{' {
+		p.next()
+		for i := 1; i > 0; p.next() {
+			switch p.tok {
+			case '{':
+				i++
+			case '}':
+				i--
+			}
+		}
+	}
+	return sig
+}
+
+// MethodDecl = "func" Receiver Name Func .
+// Receiver   = "(" ( identifier | "?" ) [ "*" ] ExportedName ")" .
+//
+func (p *parser) parseMethodDecl() {
+	// "func" already consumed
+	p.expect('(')
+	recv, _ := p.parseParameter() // receiver
+	p.expect(')')
+
+	// determine receiver base type object
+	base := deref(recv.Type()).(*types.Named)
+
+	// parse method name, signature, and possibly inlined body
+	_, name := p.parseName(nil, false)
+	sig := p.parseFunc(recv)
+
+	// methods always belong to the same package as the base type object
+	pkg := base.Obj().Pkg()
+
+	// add method to type unless type was imported before
+	// and method exists already
+	// TODO(gri) This leads to a quadratic algorithm - ok for now because method counts are small.
+	base.AddMethod(types.NewFunc(token.NoPos, pkg, name, sig))
+}
+
+// FuncDecl = "func" ExportedName Func .
+//
+func (p *parser) parseFuncDecl() {
+	// "func" already consumed
+	pkg, name := p.parseExportedName()
+	typ := p.parseFunc(nil)
+	pkg.Scope().Insert(types.NewFunc(token.NoPos, pkg, name, typ))
+}
+
+// Decl = [ ImportDecl | ConstDecl | TypeDecl | VarDecl | FuncDecl | MethodDecl ] "\n" .
+//
+func (p *parser) parseDecl() {
+	if p.tok == scanner.Ident {
+		switch p.lit {
+		case "import":
+			p.parseImportDecl()
+		case "const":
+			p.parseConstDecl()
+		case "type":
+			p.parseTypeDecl()
+		case "var":
+			p.parseVarDecl()
+		case "func":
+			p.next() // look ahead
+			if p.tok == '(' {
+				p.parseMethodDecl()
+			} else {
+				p.parseFuncDecl()
+			}
+		}
+	}
+	p.expect('\n')
+}
+
+// ----------------------------------------------------------------------------
+// Export
+
+// Export        = "PackageClause { Decl } "$$" .
+// PackageClause = "package" PackageName [ "safe" ] "\n" .
+//
+func (p *parser) parseExport() *types.Package {
+	p.expectKeyword("package")
+	name := p.parsePackageName()
+	if p.tok == scanner.Ident && p.lit == "safe" {
+		// package was compiled with -u option - ignore
+		p.next()
+	}
+	p.expect('\n')
+
+	pkg := p.getPkg(p.id, name)
+
+	for p.tok != '$' && p.tok != scanner.EOF {
+		p.parseDecl()
+	}
+
+	if ch := p.scanner.Peek(); p.tok != '$' || ch != '$' {
+		// don't call next()/expect() since reading past the
+		// export data may cause scanner errors (e.g. NUL chars)
+		p.errorf("expected '$$', got %s %c", scanner.TokenString(p.tok), ch)
+	}
+
+	if n := p.scanner.ErrorCount; n != 0 {
+		p.errorf("expected no scanner errors, got %d", n)
+	}
+
+	// Record all locally referenced packages as imports.
+	var imports []*types.Package
+	for id, pkg2 := range p.localPkgs {
+		if pkg2.Name() == "" {
+			p.errorf("%s package has no name", id)
+		}
+		if id == p.id {
+			continue // avoid self-edge
+		}
+		imports = append(imports, pkg2)
+	}
+	sort.Sort(byPath(imports))
+	pkg.SetImports(imports)
+
+	// package was imported completely and without errors
+	pkg.MarkComplete()
+
+	return pkg
+}
+
+type byPath []*types.Package
+
+func (a byPath) Len() int           { return len(a) }
+func (a byPath) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+func (a byPath) Less(i, j int) bool { return a[i].Path() < a[j].Path() }
diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/iexport.go b/vendor/golang.org/x/tools/go/internal/gcimporter/iexport.go
new file mode 100644
index 0000000000..be671c79b7
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/internal/gcimporter/iexport.go
@@ -0,0 +1,723 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Indexed binary package export.
+// This file was derived from $GOROOT/src/cmd/compile/internal/gc/iexport.go;
+// see that file for specification of the format.
+
+// +build go1.11
+
+package gcimporter
+
+import (
+	"bytes"
+	"encoding/binary"
+	"go/ast"
+	"go/constant"
+	"go/token"
+	"go/types"
+	"io"
+	"math/big"
+	"reflect"
+	"sort"
+)
+
+// Current indexed export format version. Increase with each format change.
+// 0: Go1.11 encoding
+const iexportVersion = 0
+
+// IExportData returns the binary export data for pkg.
+// If no file set is provided, position info will be missing.
+func IExportData(fset *token.FileSet, pkg *types.Package) (b []byte, err error) {
+	defer func() {
+		if e := recover(); e != nil {
+			if ierr, ok := e.(internalError); ok {
+				err = ierr
+				return
+			}
+			// Not an internal error; panic again.
+			panic(e)
+		}
+	}()
+
+	p := iexporter{
+		out:         bytes.NewBuffer(nil),
+		fset:        fset,
+		allPkgs:     map[*types.Package]bool{},
+		stringIndex: map[string]uint64{},
+		declIndex:   map[types.Object]uint64{},
+		typIndex:    map[types.Type]uint64{},
+	}
+
+	for i, pt := range predeclared() {
+		p.typIndex[pt] = uint64(i)
+	}
+	if len(p.typIndex) > predeclReserved {
+		panic(internalErrorf("too many predeclared types: %d > %d", len(p.typIndex), predeclReserved))
+	}
+
+	// Initialize work queue with exported declarations.
+	scope := pkg.Scope()
+	for _, name := range scope.Names() {
+		if ast.IsExported(name) {
+			p.pushDecl(scope.Lookup(name))
+		}
+	}
+
+	// Loop until no more work.
+	for !p.declTodo.empty() {
+		p.doDecl(p.declTodo.popHead())
+	}
+
+	// Append indices to data0 section.
+	dataLen := uint64(p.data0.Len())
+	w := p.newWriter()
+	w.writeIndex(p.declIndex, pkg)
+	w.flush()
+
+	// Assemble header.
+	var hdr intWriter
+	hdr.WriteByte('i')
+	hdr.uint64(iexportVersion)
+	hdr.uint64(uint64(p.strings.Len()))
+	hdr.uint64(dataLen)
+
+	// Flush output.
+	io.Copy(p.out, &hdr)
+	io.Copy(p.out, &p.strings)
+	io.Copy(p.out, &p.data0)
+
+	return p.out.Bytes(), nil
+}
+
+// writeIndex writes out an object index. mainIndex indicates whether
+// we're writing out the main index, which is also read by
+// non-compiler tools and includes a complete package description
+// (i.e., name and height).
+func (w *exportWriter) writeIndex(index map[types.Object]uint64, localpkg *types.Package) {
+	// Build a map from packages to objects from that package.
+	pkgObjs := map[*types.Package][]types.Object{}
+
+	// For the main index, make sure to include every package that
+	// we reference, even if we're not exporting (or reexporting)
+	// any symbols from it.
+	pkgObjs[localpkg] = nil
+	for pkg := range w.p.allPkgs {
+		pkgObjs[pkg] = nil
+	}
+
+	for obj := range index {
+		pkgObjs[obj.Pkg()] = append(pkgObjs[obj.Pkg()], obj)
+	}
+
+	var pkgs []*types.Package
+	for pkg, objs := range pkgObjs {
+		pkgs = append(pkgs, pkg)
+
+		sort.Slice(objs, func(i, j int) bool {
+			return objs[i].Name() < objs[j].Name()
+		})
+	}
+
+	sort.Slice(pkgs, func(i, j int) bool {
+		return pkgs[i].Path() < pkgs[j].Path()
+	})
+
+	w.uint64(uint64(len(pkgs)))
+	for _, pkg := range pkgs {
+		w.string(pkg.Path())
+		w.string(pkg.Name())
+		w.uint64(uint64(0)) // package height is not needed for go/types
+
+		objs := pkgObjs[pkg]
+		w.uint64(uint64(len(objs)))
+		for _, obj := range objs {
+			w.string(obj.Name())
+			w.uint64(index[obj])
+		}
+	}
+}
+
+type iexporter struct {
+	fset *token.FileSet
+	out  *bytes.Buffer
+
+	// allPkgs tracks all packages that have been referenced by
+	// the export data, so we can ensure to include them in the
+	// main index.
+	allPkgs map[*types.Package]bool
+
+	declTodo objQueue
+
+	strings     intWriter
+	stringIndex map[string]uint64
+
+	data0     intWriter
+	declIndex map[types.Object]uint64
+	typIndex  map[types.Type]uint64
+}
+
+// stringOff returns the offset of s within the string section.
+// If not already present, it's added to the end.
+func (p *iexporter) stringOff(s string) uint64 {
+	off, ok := p.stringIndex[s]
+	if !ok {
+		off = uint64(p.strings.Len())
+		p.stringIndex[s] = off
+
+		p.strings.uint64(uint64(len(s)))
+		p.strings.WriteString(s)
+	}
+	return off
+}
+
+// pushDecl adds n to the declaration work queue, if not already present.
+func (p *iexporter) pushDecl(obj types.Object) {
+	// Package unsafe is known to the compiler and predeclared.
+	assert(obj.Pkg() != types.Unsafe)
+
+	if _, ok := p.declIndex[obj]; ok {
+		return
+	}
+
+	p.declIndex[obj] = ^uint64(0) // mark n present in work queue
+	p.declTodo.pushTail(obj)
+}
+
+// exportWriter handles writing out individual data section chunks.
+type exportWriter struct {
+	p *iexporter
+
+	data     intWriter
+	currPkg  *types.Package
+	prevFile string
+	prevLine int64
+}
+
+func (p *iexporter) doDecl(obj types.Object) {
+	w := p.newWriter()
+	w.setPkg(obj.Pkg(), false)
+
+	switch obj := obj.(type) {
+	case *types.Var:
+		w.tag('V')
+		w.pos(obj.Pos())
+		w.typ(obj.Type(), obj.Pkg())
+
+	case *types.Func:
+		sig, _ := obj.Type().(*types.Signature)
+		if sig.Recv() != nil {
+			panic(internalErrorf("unexpected method: %v", sig))
+		}
+		w.tag('F')
+		w.pos(obj.Pos())
+		w.signature(sig)
+
+	case *types.Const:
+		w.tag('C')
+		w.pos(obj.Pos())
+		w.value(obj.Type(), obj.Val())
+
+	case *types.TypeName:
+		if obj.IsAlias() {
+			w.tag('A')
+			w.pos(obj.Pos())
+			w.typ(obj.Type(), obj.Pkg())
+			break
+		}
+
+		// Defined type.
+		w.tag('T')
+		w.pos(obj.Pos())
+
+		underlying := obj.Type().Underlying()
+		w.typ(underlying, obj.Pkg())
+
+		t := obj.Type()
+		if types.IsInterface(t) {
+			break
+		}
+
+		named, ok := t.(*types.Named)
+		if !ok {
+			panic(internalErrorf("%s is not a defined type", t))
+		}
+
+		n := named.NumMethods()
+		w.uint64(uint64(n))
+		for i := 0; i < n; i++ {
+			m := named.Method(i)
+			w.pos(m.Pos())
+			w.string(m.Name())
+			sig, _ := m.Type().(*types.Signature)
+			w.param(sig.Recv())
+			w.signature(sig)
+		}
+
+	default:
+		panic(internalErrorf("unexpected object: %v", obj))
+	}
+
+	p.declIndex[obj] = w.flush()
+}
+
+func (w *exportWriter) tag(tag byte) {
+	w.data.WriteByte(tag)
+}
+
+func (w *exportWriter) pos(pos token.Pos) {
+	p := w.p.fset.Position(pos)
+	file := p.Filename
+	line := int64(p.Line)
+
+	// When file is the same as the last position (common case),
+	// we can save a few bytes by delta encoding just the line
+	// number.
+	//
+	// Note: Because data objects may be read out of order (or not
+	// at all), we can only apply delta encoding within a single
+	// object. This is handled implicitly by tracking prevFile and
+	// prevLine as fields of exportWriter.
+
+	if file == w.prevFile {
+		delta := line - w.prevLine
+		w.int64(delta)
+		if delta == deltaNewFile {
+			w.int64(-1)
+		}
+	} else {
+		w.int64(deltaNewFile)
+		w.int64(line) // line >= 0
+		w.string(file)
+		w.prevFile = file
+	}
+	w.prevLine = line
+}
+
+func (w *exportWriter) pkg(pkg *types.Package) {
+	// Ensure any referenced packages are declared in the main index.
+	w.p.allPkgs[pkg] = true
+
+	w.string(pkg.Path())
+}
+
+func (w *exportWriter) qualifiedIdent(obj types.Object) {
+	// Ensure any referenced declarations are written out too.
+	w.p.pushDecl(obj)
+
+	w.string(obj.Name())
+	w.pkg(obj.Pkg())
+}
+
+func (w *exportWriter) typ(t types.Type, pkg *types.Package) {
+	w.data.uint64(w.p.typOff(t, pkg))
+}
+
+func (p *iexporter) newWriter() *exportWriter {
+	return &exportWriter{p: p}
+}
+
+func (w *exportWriter) flush() uint64 {
+	off := uint64(w.p.data0.Len())
+	io.Copy(&w.p.data0, &w.data)
+	return off
+}
+
+func (p *iexporter) typOff(t types.Type, pkg *types.Package) uint64 {
+	off, ok := p.typIndex[t]
+	if !ok {
+		w := p.newWriter()
+		w.doTyp(t, pkg)
+		off = predeclReserved + w.flush()
+		p.typIndex[t] = off
+	}
+	return off
+}
+
+func (w *exportWriter) startType(k itag) {
+	w.data.uint64(uint64(k))
+}
+
+func (w *exportWriter) doTyp(t types.Type, pkg *types.Package) {
+	switch t := t.(type) {
+	case *types.Named:
+		w.startType(definedType)
+		w.qualifiedIdent(t.Obj())
+
+	case *types.Pointer:
+		w.startType(pointerType)
+		w.typ(t.Elem(), pkg)
+
+	case *types.Slice:
+		w.startType(sliceType)
+		w.typ(t.Elem(), pkg)
+
+	case *types.Array:
+		w.startType(arrayType)
+		w.uint64(uint64(t.Len()))
+		w.typ(t.Elem(), pkg)
+
+	case *types.Chan:
+		w.startType(chanType)
+		// 1 RecvOnly; 2 SendOnly; 3 SendRecv
+		var dir uint64
+		switch t.Dir() {
+		case types.RecvOnly:
+			dir = 1
+		case types.SendOnly:
+			dir = 2
+		case types.SendRecv:
+			dir = 3
+		}
+		w.uint64(dir)
+		w.typ(t.Elem(), pkg)
+
+	case *types.Map:
+		w.startType(mapType)
+		w.typ(t.Key(), pkg)
+		w.typ(t.Elem(), pkg)
+
+	case *types.Signature:
+		w.startType(signatureType)
+		w.setPkg(pkg, true)
+		w.signature(t)
+
+	case *types.Struct:
+		w.startType(structType)
+		w.setPkg(pkg, true)
+
+		n := t.NumFields()
+		w.uint64(uint64(n))
+		for i := 0; i < n; i++ {
+			f := t.Field(i)
+			w.pos(f.Pos())
+			w.string(f.Name())
+			w.typ(f.Type(), pkg)
+			w.bool(f.Embedded())
+			w.string(t.Tag(i)) // note (or tag)
+		}
+
+	case *types.Interface:
+		w.startType(interfaceType)
+		w.setPkg(pkg, true)
+
+		n := t.NumEmbeddeds()
+		w.uint64(uint64(n))
+		for i := 0; i < n; i++ {
+			f := t.Embedded(i)
+			w.pos(f.Obj().Pos())
+			w.typ(f.Obj().Type(), f.Obj().Pkg())
+		}
+
+		n = t.NumExplicitMethods()
+		w.uint64(uint64(n))
+		for i := 0; i < n; i++ {
+			m := t.ExplicitMethod(i)
+			w.pos(m.Pos())
+			w.string(m.Name())
+			sig, _ := m.Type().(*types.Signature)
+			w.signature(sig)
+		}
+
+	default:
+		panic(internalErrorf("unexpected type: %v, %v", t, reflect.TypeOf(t)))
+	}
+}
+
+func (w *exportWriter) setPkg(pkg *types.Package, write bool) {
+	if write {
+		w.pkg(pkg)
+	}
+
+	w.currPkg = pkg
+}
+
+func (w *exportWriter) signature(sig *types.Signature) {
+	w.paramList(sig.Params())
+	w.paramList(sig.Results())
+	if sig.Params().Len() > 0 {
+		w.bool(sig.Variadic())
+	}
+}
+
+func (w *exportWriter) paramList(tup *types.Tuple) {
+	n := tup.Len()
+	w.uint64(uint64(n))
+	for i := 0; i < n; i++ {
+		w.param(tup.At(i))
+	}
+}
+
+func (w *exportWriter) param(obj types.Object) {
+	w.pos(obj.Pos())
+	w.localIdent(obj)
+	w.typ(obj.Type(), obj.Pkg())
+}
+
+func (w *exportWriter) value(typ types.Type, v constant.Value) {
+	w.typ(typ, nil)
+
+	switch v.Kind() {
+	case constant.Bool:
+		w.bool(constant.BoolVal(v))
+	case constant.Int:
+		var i big.Int
+		if i64, exact := constant.Int64Val(v); exact {
+			i.SetInt64(i64)
+		} else if ui64, exact := constant.Uint64Val(v); exact {
+			i.SetUint64(ui64)
+		} else {
+			i.SetString(v.ExactString(), 10)
+		}
+		w.mpint(&i, typ)
+	case constant.Float:
+		f := constantToFloat(v)
+		w.mpfloat(f, typ)
+	case constant.Complex:
+		w.mpfloat(constantToFloat(constant.Real(v)), typ)
+		w.mpfloat(constantToFloat(constant.Imag(v)), typ)
+	case constant.String:
+		w.string(constant.StringVal(v))
+	case constant.Unknown:
+		// package contains type errors
+	default:
+		panic(internalErrorf("unexpected value %v (%T)", v, v))
+	}
+}
+
+// constantToFloat converts a constant.Value with kind constant.Float to a
+// big.Float.
+func constantToFloat(x constant.Value) *big.Float {
+	assert(x.Kind() == constant.Float)
+	// Use the same floating-point precision (512) as cmd/compile
+	// (see Mpprec in cmd/compile/internal/gc/mpfloat.go).
+	const mpprec = 512
+	var f big.Float
+	f.SetPrec(mpprec)
+	if v, exact := constant.Float64Val(x); exact {
+		// float64
+		f.SetFloat64(v)
+	} else if num, denom := constant.Num(x), constant.Denom(x); num.Kind() == constant.Int {
+		// TODO(gri): add big.Rat accessor to constant.Value.
+		n := valueToRat(num)
+		d := valueToRat(denom)
+		f.SetRat(n.Quo(n, d))
+	} else {
+		// Value too large to represent as a fraction => inaccessible.
+		// TODO(gri): add big.Float accessor to constant.Value.
+		_, ok := f.SetString(x.ExactString())
+		assert(ok)
+	}
+	return &f
+}
+
+// mpint exports a multi-precision integer.
+//
+// For unsigned types, small values are written out as a single
+// byte. Larger values are written out as a length-prefixed big-endian
+// byte string, where the length prefix is encoded as its complement.
+// For example, bytes 0, 1, and 2 directly represent the integer
+// values 0, 1, and 2; while bytes 255, 254, and 253 indicate a 1-,
+// 2-, and 3-byte big-endian string follow.
+//
+// Encoding for signed types use the same general approach as for
+// unsigned types, except small values use zig-zag encoding and the
+// bottom bit of length prefix byte for large values is reserved as a
+// sign bit.
+//
+// The exact boundary between small and large encodings varies
+// according to the maximum number of bytes needed to encode a value
+// of type typ. As a special case, 8-bit types are always encoded as a
+// single byte.
+//
+// TODO(mdempsky): Is this level of complexity really worthwhile?
+func (w *exportWriter) mpint(x *big.Int, typ types.Type) {
+	basic, ok := typ.Underlying().(*types.Basic)
+	if !ok {
+		panic(internalErrorf("unexpected type %v (%T)", typ.Underlying(), typ.Underlying()))
+	}
+
+	signed, maxBytes := intSize(basic)
+
+	negative := x.Sign() < 0
+	if !signed && negative {
+		panic(internalErrorf("negative unsigned integer; type %v, value %v", typ, x))
+	}
+
+	b := x.Bytes()
+	if len(b) > 0 && b[0] == 0 {
+		panic(internalErrorf("leading zeros"))
+	}
+	if uint(len(b)) > maxBytes {
+		panic(internalErrorf("bad mpint length: %d > %d (type %v, value %v)", len(b), maxBytes, typ, x))
+	}
+
+	maxSmall := 256 - maxBytes
+	if signed {
+		maxSmall = 256 - 2*maxBytes
+	}
+	if maxBytes == 1 {
+		maxSmall = 256
+	}
+
+	// Check if x can use small value encoding.
+	if len(b) <= 1 {
+		var ux uint
+		if len(b) == 1 {
+			ux = uint(b[0])
+		}
+		if signed {
+			ux <<= 1
+			if negative {
+				ux--
+			}
+		}
+		if ux < maxSmall {
+			w.data.WriteByte(byte(ux))
+			return
+		}
+	}
+
+	n := 256 - uint(len(b))
+	if signed {
+		n = 256 - 2*uint(len(b))
+		if negative {
+			n |= 1
+		}
+	}
+	if n < maxSmall || n >= 256 {
+		panic(internalErrorf("encoding mistake: %d, %v, %v => %d", len(b), signed, negative, n))
+	}
+
+	w.data.WriteByte(byte(n))
+	w.data.Write(b)
+}
+
+// mpfloat exports a multi-precision floating point number.
+//
+// The number's value is decomposed into mantissa × 2**exponent, where
+// mantissa is an integer. The value is written out as mantissa (as a
+// multi-precision integer) and then the exponent, except exponent is
+// omitted if mantissa is zero.
+func (w *exportWriter) mpfloat(f *big.Float, typ types.Type) {
+	if f.IsInf() {
+		panic("infinite constant")
+	}
+
+	// Break into f = mant × 2**exp, with 0.5 <= mant < 1.
+	var mant big.Float
+	exp := int64(f.MantExp(&mant))
+
+	// Scale so that mant is an integer.
+	prec := mant.MinPrec()
+	mant.SetMantExp(&mant, int(prec))
+	exp -= int64(prec)
+
+	manti, acc := mant.Int(nil)
+	if acc != big.Exact {
+		panic(internalErrorf("mantissa scaling failed for %f (%s)", f, acc))
+	}
+	w.mpint(manti, typ)
+	if manti.Sign() != 0 {
+		w.int64(exp)
+	}
+}
+
+func (w *exportWriter) bool(b bool) bool {
+	var x uint64
+	if b {
+		x = 1
+	}
+	w.uint64(x)
+	return b
+}
+
+func (w *exportWriter) int64(x int64)   { w.data.int64(x) }
+func (w *exportWriter) uint64(x uint64) { w.data.uint64(x) }
+func (w *exportWriter) string(s string) { w.uint64(w.p.stringOff(s)) }
+
+func (w *exportWriter) localIdent(obj types.Object) {
+	// Anonymous parameters.
+	if obj == nil {
+		w.string("")
+		return
+	}
+
+	name := obj.Name()
+	if name == "_" {
+		w.string("_")
+		return
+	}
+
+	w.string(name)
+}
+
+type intWriter struct {
+	bytes.Buffer
+}
+
+func (w *intWriter) int64(x int64) {
+	var buf [binary.MaxVarintLen64]byte
+	n := binary.PutVarint(buf[:], x)
+	w.Write(buf[:n])
+}
+
+func (w *intWriter) uint64(x uint64) {
+	var buf [binary.MaxVarintLen64]byte
+	n := binary.PutUvarint(buf[:], x)
+	w.Write(buf[:n])
+}
+
+func assert(cond bool) {
+	if !cond {
+		panic("internal error: assertion failed")
+	}
+}
+
+// The below is copied from go/src/cmd/compile/internal/gc/syntax.go.
+
+// objQueue is a FIFO queue of types.Object. The zero value of objQueue is
+// a ready-to-use empty queue.
+type objQueue struct {
+	ring       []types.Object
+	head, tail int
+}
+
+// empty returns true if q contains no Nodes.
+func (q *objQueue) empty() bool {
+	return q.head == q.tail
+}
+
+// pushTail appends n to the tail of the queue.
+func (q *objQueue) pushTail(obj types.Object) {
+	if len(q.ring) == 0 {
+		q.ring = make([]types.Object, 16)
+	} else if q.head+len(q.ring) == q.tail {
+		// Grow the ring.
+		nring := make([]types.Object, len(q.ring)*2)
+		// Copy the old elements.
+		part := q.ring[q.head%len(q.ring):]
+		if q.tail-q.head <= len(part) {
+			part = part[:q.tail-q.head]
+			copy(nring, part)
+		} else {
+			pos := copy(nring, part)
+			copy(nring[pos:], q.ring[:q.tail%len(q.ring)])
+		}
+		q.ring, q.head, q.tail = nring, 0, q.tail-q.head
+	}
+
+	q.ring[q.tail%len(q.ring)] = obj
+	q.tail++
+}
+
+// popHead pops a node from the head of the queue. It panics if q is empty.
+func (q *objQueue) popHead() types.Object {
+	if q.empty() {
+		panic("dequeue empty")
+	}
+	obj := q.ring[q.head%len(q.ring)]
+	q.head++
+	return obj
+}
diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/iimport.go b/vendor/golang.org/x/tools/go/internal/gcimporter/iimport.go
new file mode 100644
index 0000000000..3cb7ae5b9e
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/internal/gcimporter/iimport.go
@@ -0,0 +1,606 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Indexed package import.
+// See cmd/compile/internal/gc/iexport.go for the export data format.
+
+// This file is a copy of $GOROOT/src/go/internal/gcimporter/iimport.go.
+
+package gcimporter
+
+import (
+	"bytes"
+	"encoding/binary"
+	"fmt"
+	"go/constant"
+	"go/token"
+	"go/types"
+	"io"
+	"sort"
+)
+
+type intReader struct {
+	*bytes.Reader
+	path string
+}
+
+func (r *intReader) int64() int64 {
+	i, err := binary.ReadVarint(r.Reader)
+	if err != nil {
+		errorf("import %q: read varint error: %v", r.path, err)
+	}
+	return i
+}
+
+func (r *intReader) uint64() uint64 {
+	i, err := binary.ReadUvarint(r.Reader)
+	if err != nil {
+		errorf("import %q: read varint error: %v", r.path, err)
+	}
+	return i
+}
+
+const predeclReserved = 32
+
+type itag uint64
+
+const (
+	// Types
+	definedType itag = iota
+	pointerType
+	sliceType
+	arrayType
+	chanType
+	mapType
+	signatureType
+	structType
+	interfaceType
+)
+
+// IImportData imports a package from the serialized package data
+// and returns the number of bytes consumed and a reference to the package.
+// If the export data version is not recognized or the format is otherwise
+// compromised, an error is returned.
+func IImportData(fset *token.FileSet, imports map[string]*types.Package, data []byte, path string) (_ int, pkg *types.Package, err error) {
+	const currentVersion = 0
+	version := -1
+	defer func() {
+		if e := recover(); e != nil {
+			if version > currentVersion {
+				err = fmt.Errorf("cannot import %q (%v), export data is newer version - update tool", path, e)
+			} else {
+				err = fmt.Errorf("cannot import %q (%v), possibly version skew - reinstall package", path, e)
+			}
+		}
+	}()
+
+	r := &intReader{bytes.NewReader(data), path}
+
+	version = int(r.uint64())
+	switch version {
+	case currentVersion:
+	default:
+		errorf("unknown iexport format version %d", version)
+	}
+
+	sLen := int64(r.uint64())
+	dLen := int64(r.uint64())
+
+	whence, _ := r.Seek(0, io.SeekCurrent)
+	stringData := data[whence : whence+sLen]
+	declData := data[whence+sLen : whence+sLen+dLen]
+	r.Seek(sLen+dLen, io.SeekCurrent)
+
+	p := iimporter{
+		ipath: path,
+
+		stringData:  stringData,
+		stringCache: make(map[uint64]string),
+		pkgCache:    make(map[uint64]*types.Package),
+
+		declData: declData,
+		pkgIndex: make(map[*types.Package]map[string]uint64),
+		typCache: make(map[uint64]types.Type),
+
+		fake: fakeFileSet{
+			fset:  fset,
+			files: make(map[string]*token.File),
+		},
+	}
+
+	for i, pt := range predeclared() {
+		p.typCache[uint64(i)] = pt
+	}
+
+	pkgList := make([]*types.Package, r.uint64())
+	for i := range pkgList {
+		pkgPathOff := r.uint64()
+		pkgPath := p.stringAt(pkgPathOff)
+		pkgName := p.stringAt(r.uint64())
+		_ = r.uint64() // package height; unused by go/types
+
+		if pkgPath == "" {
+			pkgPath = path
+		}
+		pkg := imports[pkgPath]
+		if pkg == nil {
+			pkg = types.NewPackage(pkgPath, pkgName)
+			imports[pkgPath] = pkg
+		} else if pkg.Name() != pkgName {
+			errorf("conflicting names %s and %s for package %q", pkg.Name(), pkgName, path)
+		}
+
+		p.pkgCache[pkgPathOff] = pkg
+
+		nameIndex := make(map[string]uint64)
+		for nSyms := r.uint64(); nSyms > 0; nSyms-- {
+			name := p.stringAt(r.uint64())
+			nameIndex[name] = r.uint64()
+		}
+
+		p.pkgIndex[pkg] = nameIndex
+		pkgList[i] = pkg
+	}
+	var localpkg *types.Package
+	for _, pkg := range pkgList {
+		if pkg.Path() == path {
+			localpkg = pkg
+		}
+	}
+
+	names := make([]string, 0, len(p.pkgIndex[localpkg]))
+	for name := range p.pkgIndex[localpkg] {
+		names = append(names, name)
+	}
+	sort.Strings(names)
+	for _, name := range names {
+		p.doDecl(localpkg, name)
+	}
+
+	for _, typ := range p.interfaceList {
+		typ.Complete()
+	}
+
+	// record all referenced packages as imports
+	list := append(([]*types.Package)(nil), pkgList[1:]...)
+	sort.Sort(byPath(list))
+	localpkg.SetImports(list)
+
+	// package was imported completely and without errors
+	localpkg.MarkComplete()
+
+	consumed, _ := r.Seek(0, io.SeekCurrent)
+	return int(consumed), localpkg, nil
+}
+
+type iimporter struct {
+	ipath string
+
+	stringData  []byte
+	stringCache map[uint64]string
+	pkgCache    map[uint64]*types.Package
+
+	declData []byte
+	pkgIndex map[*types.Package]map[string]uint64
+	typCache map[uint64]types.Type
+
+	fake          fakeFileSet
+	interfaceList []*types.Interface
+}
+
+func (p *iimporter) doDecl(pkg *types.Package, name string) {
+	// See if we've already imported this declaration.
+	if obj := pkg.Scope().Lookup(name); obj != nil {
+		return
+	}
+
+	off, ok := p.pkgIndex[pkg][name]
+	if !ok {
+		errorf("%v.%v not in index", pkg, name)
+	}
+
+	r := &importReader{p: p, currPkg: pkg}
+	r.declReader.Reset(p.declData[off:])
+
+	r.obj(name)
+}
+
+func (p *iimporter) stringAt(off uint64) string {
+	if s, ok := p.stringCache[off]; ok {
+		return s
+	}
+
+	slen, n := binary.Uvarint(p.stringData[off:])
+	if n <= 0 {
+		errorf("varint failed")
+	}
+	spos := off + uint64(n)
+	s := string(p.stringData[spos : spos+slen])
+	p.stringCache[off] = s
+	return s
+}
+
+func (p *iimporter) pkgAt(off uint64) *types.Package {
+	if pkg, ok := p.pkgCache[off]; ok {
+		return pkg
+	}
+	path := p.stringAt(off)
+	errorf("missing package %q in %q", path, p.ipath)
+	return nil
+}
+
+func (p *iimporter) typAt(off uint64, base *types.Named) types.Type {
+	if t, ok := p.typCache[off]; ok && (base == nil || !isInterface(t)) {
+		return t
+	}
+
+	if off < predeclReserved {
+		errorf("predeclared type missing from cache: %v", off)
+	}
+
+	r := &importReader{p: p}
+	r.declReader.Reset(p.declData[off-predeclReserved:])
+	t := r.doType(base)
+
+	if base == nil || !isInterface(t) {
+		p.typCache[off] = t
+	}
+	return t
+}
+
+type importReader struct {
+	p          *iimporter
+	declReader bytes.Reader
+	currPkg    *types.Package
+	prevFile   string
+	prevLine   int64
+}
+
+func (r *importReader) obj(name string) {
+	tag := r.byte()
+	pos := r.pos()
+
+	switch tag {
+	case 'A':
+		typ := r.typ()
+
+		r.declare(types.NewTypeName(pos, r.currPkg, name, typ))
+
+	case 'C':
+		typ, val := r.value()
+
+		r.declare(types.NewConst(pos, r.currPkg, name, typ, val))
+
+	case 'F':
+		sig := r.signature(nil)
+
+		r.declare(types.NewFunc(pos, r.currPkg, name, sig))
+
+	case 'T':
+		// Types can be recursive. We need to setup a stub
+		// declaration before recursing.
+		obj := types.NewTypeName(pos, r.currPkg, name, nil)
+		named := types.NewNamed(obj, nil, nil)
+		r.declare(obj)
+
+		underlying := r.p.typAt(r.uint64(), named).Underlying()
+		named.SetUnderlying(underlying)
+
+		if !isInterface(underlying) {
+			for n := r.uint64(); n > 0; n-- {
+				mpos := r.pos()
+				mname := r.ident()
+				recv := r.param()
+				msig := r.signature(recv)
+
+				named.AddMethod(types.NewFunc(mpos, r.currPkg, mname, msig))
+			}
+		}
+
+	case 'V':
+		typ := r.typ()
+
+		r.declare(types.NewVar(pos, r.currPkg, name, typ))
+
+	default:
+		errorf("unexpected tag: %v", tag)
+	}
+}
+
+func (r *importReader) declare(obj types.Object) {
+	obj.Pkg().Scope().Insert(obj)
+}
+
+func (r *importReader) value() (typ types.Type, val constant.Value) {
+	typ = r.typ()
+
+	switch b := typ.Underlying().(*types.Basic); b.Info() & types.IsConstType {
+	case types.IsBoolean:
+		val = constant.MakeBool(r.bool())
+
+	case types.IsString:
+		val = constant.MakeString(r.string())
+
+	case types.IsInteger:
+		val = r.mpint(b)
+
+	case types.IsFloat:
+		val = r.mpfloat(b)
+
+	case types.IsComplex:
+		re := r.mpfloat(b)
+		im := r.mpfloat(b)
+		val = constant.BinaryOp(re, token.ADD, constant.MakeImag(im))
+
+	default:
+		if b.Kind() == types.Invalid {
+			val = constant.MakeUnknown()
+			return
+		}
+		errorf("unexpected type %v", typ) // panics
+		panic("unreachable")
+	}
+
+	return
+}
+
+func intSize(b *types.Basic) (signed bool, maxBytes uint) {
+	if (b.Info() & types.IsUntyped) != 0 {
+		return true, 64
+	}
+
+	switch b.Kind() {
+	case types.Float32, types.Complex64:
+		return true, 3
+	case types.Float64, types.Complex128:
+		return true, 7
+	}
+
+	signed = (b.Info() & types.IsUnsigned) == 0
+	switch b.Kind() {
+	case types.Int8, types.Uint8:
+		maxBytes = 1
+	case types.Int16, types.Uint16:
+		maxBytes = 2
+	case types.Int32, types.Uint32:
+		maxBytes = 4
+	default:
+		maxBytes = 8
+	}
+
+	return
+}
+
+func (r *importReader) mpint(b *types.Basic) constant.Value {
+	signed, maxBytes := intSize(b)
+
+	maxSmall := 256 - maxBytes
+	if signed {
+		maxSmall = 256 - 2*maxBytes
+	}
+	if maxBytes == 1 {
+		maxSmall = 256
+	}
+
+	n, _ := r.declReader.ReadByte()
+	if uint(n) < maxSmall {
+		v := int64(n)
+		if signed {
+			v >>= 1
+			if n&1 != 0 {
+				v = ^v
+			}
+		}
+		return constant.MakeInt64(v)
+	}
+
+	v := -n
+	if signed {
+		v = -(n &^ 1) >> 1
+	}
+	if v < 1 || uint(v) > maxBytes {
+		errorf("weird decoding: %v, %v => %v", n, signed, v)
+	}
+
+	buf := make([]byte, v)
+	io.ReadFull(&r.declReader, buf)
+
+	// convert to little endian
+	// TODO(gri) go/constant should have a more direct conversion function
+	//           (e.g., once it supports a big.Float based implementation)
+	for i, j := 0, len(buf)-1; i < j; i, j = i+1, j-1 {
+		buf[i], buf[j] = buf[j], buf[i]
+	}
+
+	x := constant.MakeFromBytes(buf)
+	if signed && n&1 != 0 {
+		x = constant.UnaryOp(token.SUB, x, 0)
+	}
+	return x
+}
+
+func (r *importReader) mpfloat(b *types.Basic) constant.Value {
+	x := r.mpint(b)
+	if constant.Sign(x) == 0 {
+		return x
+	}
+
+	exp := r.int64()
+	switch {
+	case exp > 0:
+		x = constant.Shift(x, token.SHL, uint(exp))
+	case exp < 0:
+		d := constant.Shift(constant.MakeInt64(1), token.SHL, uint(-exp))
+		x = constant.BinaryOp(x, token.QUO, d)
+	}
+	return x
+}
+
+func (r *importReader) ident() string {
+	return r.string()
+}
+
+func (r *importReader) qualifiedIdent() (*types.Package, string) {
+	name := r.string()
+	pkg := r.pkg()
+	return pkg, name
+}
+
+func (r *importReader) pos() token.Pos {
+	delta := r.int64()
+	if delta != deltaNewFile {
+		r.prevLine += delta
+	} else if l := r.int64(); l == -1 {
+		r.prevLine += deltaNewFile
+	} else {
+		r.prevFile = r.string()
+		r.prevLine = l
+	}
+
+	if r.prevFile == "" && r.prevLine == 0 {
+		return token.NoPos
+	}
+
+	return r.p.fake.pos(r.prevFile, int(r.prevLine))
+}
+
+func (r *importReader) typ() types.Type {
+	return r.p.typAt(r.uint64(), nil)
+}
+
+func isInterface(t types.Type) bool {
+	_, ok := t.(*types.Interface)
+	return ok
+}
+
+func (r *importReader) pkg() *types.Package { return r.p.pkgAt(r.uint64()) }
+func (r *importReader) string() string      { return r.p.stringAt(r.uint64()) }
+
+func (r *importReader) doType(base *types.Named) types.Type {
+	switch k := r.kind(); k {
+	default:
+		errorf("unexpected kind tag in %q: %v", r.p.ipath, k)
+		return nil
+
+	case definedType:
+		pkg, name := r.qualifiedIdent()
+		r.p.doDecl(pkg, name)
+		return pkg.Scope().Lookup(name).(*types.TypeName).Type()
+	case pointerType:
+		return types.NewPointer(r.typ())
+	case sliceType:
+		return types.NewSlice(r.typ())
+	case arrayType:
+		n := r.uint64()
+		return types.NewArray(r.typ(), int64(n))
+	case chanType:
+		dir := chanDir(int(r.uint64()))
+		return types.NewChan(dir, r.typ())
+	case mapType:
+		return types.NewMap(r.typ(), r.typ())
+	case signatureType:
+		r.currPkg = r.pkg()
+		return r.signature(nil)
+
+	case structType:
+		r.currPkg = r.pkg()
+
+		fields := make([]*types.Var, r.uint64())
+		tags := make([]string, len(fields))
+		for i := range fields {
+			fpos := r.pos()
+			fname := r.ident()
+			ftyp := r.typ()
+			emb := r.bool()
+			tag := r.string()
+
+			fields[i] = types.NewField(fpos, r.currPkg, fname, ftyp, emb)
+			tags[i] = tag
+		}
+		return types.NewStruct(fields, tags)
+
+	case interfaceType:
+		r.currPkg = r.pkg()
+
+		embeddeds := make([]types.Type, r.uint64())
+		for i := range embeddeds {
+			_ = r.pos()
+			embeddeds[i] = r.typ()
+		}
+
+		methods := make([]*types.Func, r.uint64())
+		for i := range methods {
+			mpos := r.pos()
+			mname := r.ident()
+
+			// TODO(mdempsky): Matches bimport.go, but I
+			// don't agree with this.
+			var recv *types.Var
+			if base != nil {
+				recv = types.NewVar(token.NoPos, r.currPkg, "", base)
+			}
+
+			msig := r.signature(recv)
+			methods[i] = types.NewFunc(mpos, r.currPkg, mname, msig)
+		}
+
+		typ := newInterface(methods, embeddeds)
+		r.p.interfaceList = append(r.p.interfaceList, typ)
+		return typ
+	}
+}
+
+func (r *importReader) kind() itag {
+	return itag(r.uint64())
+}
+
+func (r *importReader) signature(recv *types.Var) *types.Signature {
+	params := r.paramList()
+	results := r.paramList()
+	variadic := params.Len() > 0 && r.bool()
+	return types.NewSignature(recv, params, results, variadic)
+}
+
+func (r *importReader) paramList() *types.Tuple {
+	xs := make([]*types.Var, r.uint64())
+	for i := range xs {
+		xs[i] = r.param()
+	}
+	return types.NewTuple(xs...)
+}
+
+func (r *importReader) param() *types.Var {
+	pos := r.pos()
+	name := r.ident()
+	typ := r.typ()
+	return types.NewParam(pos, r.currPkg, name, typ)
+}
+
+func (r *importReader) bool() bool {
+	return r.uint64() != 0
+}
+
+func (r *importReader) int64() int64 {
+	n, err := binary.ReadVarint(&r.declReader)
+	if err != nil {
+		errorf("readVarint: %v", err)
+	}
+	return n
+}
+
+func (r *importReader) uint64() uint64 {
+	n, err := binary.ReadUvarint(&r.declReader)
+	if err != nil {
+		errorf("readUvarint: %v", err)
+	}
+	return n
+}
+
+func (r *importReader) byte() byte {
+	x, err := r.declReader.ReadByte()
+	if err != nil {
+		errorf("declReader.ReadByte: %v", err)
+	}
+	return x
+}
diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/newInterface10.go b/vendor/golang.org/x/tools/go/internal/gcimporter/newInterface10.go
new file mode 100644
index 0000000000..463f252271
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/internal/gcimporter/newInterface10.go
@@ -0,0 +1,21 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !go1.11
+
+package gcimporter
+
+import "go/types"
+
+func newInterface(methods []*types.Func, embeddeds []types.Type) *types.Interface {
+	named := make([]*types.Named, len(embeddeds))
+	for i, e := range embeddeds {
+		var ok bool
+		named[i], ok = e.(*types.Named)
+		if !ok {
+			panic("embedding of non-defined interfaces in interfaces is not supported before Go 1.11")
+		}
+	}
+	return types.NewInterface(methods, named)
+}
diff --git a/vendor/golang.org/x/tools/go/internal/gcimporter/newInterface11.go b/vendor/golang.org/x/tools/go/internal/gcimporter/newInterface11.go
new file mode 100644
index 0000000000..ab28b95cbb
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/internal/gcimporter/newInterface11.go
@@ -0,0 +1,13 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build go1.11
+
+package gcimporter
+
+import "go/types"
+
+func newInterface(methods []*types.Func, embeddeds []types.Type) *types.Interface {
+	return types.NewInterfaceType(methods, embeddeds)
+}
diff --git a/vendor/golang.org/x/tools/go/internal/packagesdriver/sizes.go b/vendor/golang.org/x/tools/go/internal/packagesdriver/sizes.go
new file mode 100644
index 0000000000..ea15d57be1
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/internal/packagesdriver/sizes.go
@@ -0,0 +1,173 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package packagesdriver fetches type sizes for go/packages and go/analysis.
+package packagesdriver
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"go/types"
+	"log"
+	"os"
+	"os/exec"
+	"strings"
+	"time"
+)
+
+var debug = false
+
+// GetSizes returns the sizes used by the underlying driver with the given parameters.
+func GetSizes(ctx context.Context, buildFlags, env []string, dir string, usesExportData bool) (types.Sizes, error) {
+	// TODO(matloob): Clean this up. This code is mostly a copy of packages.findExternalDriver.
+	const toolPrefix = "GOPACKAGESDRIVER="
+	tool := ""
+	for _, env := range env {
+		if val := strings.TrimPrefix(env, toolPrefix); val != env {
+			tool = val
+		}
+	}
+
+	if tool == "" {
+		var err error
+		tool, err = exec.LookPath("gopackagesdriver")
+		if err != nil {
+			// We did not find the driver, so use "go list".
+			tool = "off"
+		}
+	}
+
+	if tool == "off" {
+		return GetSizesGolist(ctx, buildFlags, env, dir, usesExportData)
+	}
+
+	req, err := json.Marshal(struct {
+		Command    string   `json:"command"`
+		Env        []string `json:"env"`
+		BuildFlags []string `json:"build_flags"`
+	}{
+		Command:    "sizes",
+		Env:        env,
+		BuildFlags: buildFlags,
+	})
+	if err != nil {
+		return nil, fmt.Errorf("failed to encode message to driver tool: %v", err)
+	}
+
+	buf := new(bytes.Buffer)
+	cmd := exec.CommandContext(ctx, tool)
+	cmd.Dir = dir
+	cmd.Env = env
+	cmd.Stdin = bytes.NewReader(req)
+	cmd.Stdout = buf
+	cmd.Stderr = new(bytes.Buffer)
+	if err := cmd.Run(); err != nil {
+		return nil, fmt.Errorf("%v: %v: %s", tool, err, cmd.Stderr)
+	}
+	var response struct {
+		// Sizes, if not nil, is the types.Sizes to use when type checking.
+		Sizes *types.StdSizes
+	}
+	if err := json.Unmarshal(buf.Bytes(), &response); err != nil {
+		return nil, err
+	}
+	return response.Sizes, nil
+}
+
+func GetSizesGolist(ctx context.Context, buildFlags, env []string, dir string, usesExportData bool) (types.Sizes, error) {
+	args := []string{"list", "-f", "{{context.GOARCH}} {{context.Compiler}}"}
+	args = append(args, buildFlags...)
+	args = append(args, "--", "unsafe")
+	stdout, err := InvokeGo(ctx, env, dir, usesExportData, args...)
+	var goarch, compiler string
+	if err != nil {
+		if strings.Contains(err.Error(), "cannot find main module") {
+			// User's running outside of a module. All bets are off. Get GOARCH and guess compiler is gc.
+			// TODO(matloob): Is this a problem in practice?
+			envout, enverr := InvokeGo(ctx, env, dir, usesExportData, "env", "GOARCH")
+			if enverr != nil {
+				return nil, err
+			}
+			goarch = strings.TrimSpace(envout.String())
+			compiler = "gc"
+		} else {
+			return nil, err
+		}
+	} else {
+		fields := strings.Fields(stdout.String())
+		if len(fields) < 2 {
+			return nil, fmt.Errorf("could not determine GOARCH and Go compiler")
+		}
+		goarch = fields[0]
+		compiler = fields[1]
+	}
+	return types.SizesFor(compiler, goarch), nil
+}
+
+// InvokeGo returns the stdout of a go command invocation.
+func InvokeGo(ctx context.Context, env []string, dir string, usesExportData bool, args ...string) (*bytes.Buffer, error) {
+	if debug {
+		defer func(start time.Time) { log.Printf("%s for %v", time.Since(start), cmdDebugStr(env, args...)) }(time.Now())
+	}
+	stdout := new(bytes.Buffer)
+	stderr := new(bytes.Buffer)
+	cmd := exec.CommandContext(ctx, "go", args...)
+	// On darwin the cwd gets resolved to the real path, which breaks anything that
+	// expects the working directory to keep the original path, including the
+	// go command when dealing with modules.
+	// The Go stdlib has a special feature where if the cwd and the PWD are the
+	// same node then it trusts the PWD, so by setting it in the env for the child
+	// process we fix up all the paths returned by the go command.
+	cmd.Env = append(append([]string{}, env...), "PWD="+dir)
+	cmd.Dir = dir
+	cmd.Stdout = stdout
+	cmd.Stderr = stderr
+	if err := cmd.Run(); err != nil {
+		exitErr, ok := err.(*exec.ExitError)
+		if !ok {
+			// Catastrophic error:
+			// - executable not found
+			// - context cancellation
+			return nil, fmt.Errorf("couldn't exec 'go %v': %s %T", args, err, err)
+		}
+
+		// Export mode entails a build.
+		// If that build fails, errors appear on stderr
+		// (despite the -e flag) and the Export field is blank.
+		// Do not fail in that case.
+		if !usesExportData {
+			return nil, fmt.Errorf("go %v: %s: %s", args, exitErr, stderr)
+		}
+	}
+
+	// As of writing, go list -export prints some non-fatal compilation
+	// errors to stderr, even with -e set. We would prefer that it put
+	// them in the Package.Error JSON (see https://golang.org/issue/26319).
+	// In the meantime, there's nowhere good to put them, but they can
+	// be useful for debugging. Print them if $GOPACKAGESPRINTGOLISTERRORS
+	// is set.
+	if len(stderr.Bytes()) != 0 && os.Getenv("GOPACKAGESPRINTGOLISTERRORS") != "" {
+		fmt.Fprintf(os.Stderr, "%s stderr: <<%s>>\n", cmdDebugStr(env, args...), stderr)
+	}
+
+	// debugging
+	if false {
+		fmt.Fprintf(os.Stderr, "%s stdout: <<%s>>\n", cmdDebugStr(env, args...), stdout)
+	}
+
+	return stdout, nil
+}
+
+func cmdDebugStr(envlist []string, args ...string) string {
+	env := make(map[string]string)
+	for _, kv := range envlist {
+		split := strings.Split(kv, "=")
+		k, v := split[0], split[1]
+		env[k] = v
+	}
+
+	return fmt.Sprintf("GOROOT=%v GOPATH=%v GO111MODULE=%v PWD=%v go %v", env["GOROOT"], env["GOPATH"], env["GO111MODULE"], env["PWD"], args)
+}
diff --git a/vendor/golang.org/x/tools/go/loader/doc.go b/vendor/golang.org/x/tools/go/loader/doc.go
new file mode 100644
index 0000000000..c5aa31c1a0
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/loader/doc.go
@@ -0,0 +1,204 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package loader loads a complete Go program from source code, parsing
+// and type-checking the initial packages plus their transitive closure
+// of dependencies.  The ASTs and the derived facts are retained for
+// later use.
+//
+// Deprecated: This is an older API and does not have support
+// for modules. Use golang.org/x/tools/go/packages instead.
+//
+// The package defines two primary types: Config, which specifies a
+// set of initial packages to load and various other options; and
+// Program, which is the result of successfully loading the packages
+// specified by a configuration.
+//
+// The configuration can be set directly, but *Config provides various
+// convenience methods to simplify the common cases, each of which can
+// be called any number of times.  Finally, these are followed by a
+// call to Load() to actually load and type-check the program.
+//
+//      var conf loader.Config
+//
+//      // Use the command-line arguments to specify
+//      // a set of initial packages to load from source.
+//      // See FromArgsUsage for help.
+//      rest, err := conf.FromArgs(os.Args[1:], wantTests)
+//
+//      // Parse the specified files and create an ad hoc package with path "foo".
+//      // All files must have the same 'package' declaration.
+//      conf.CreateFromFilenames("foo", "foo.go", "bar.go")
+//
+//      // Create an ad hoc package with path "foo" from
+//      // the specified already-parsed files.
+//      // All ASTs must have the same 'package' declaration.
+//      conf.CreateFromFiles("foo", parsedFiles)
+//
+//      // Add "runtime" to the set of packages to be loaded.
+//      conf.Import("runtime")
+//
+//      // Adds "fmt" and "fmt_test" to the set of packages
+//      // to be loaded.  "fmt" will include *_test.go files.
+//      conf.ImportWithTests("fmt")
+//
+//      // Finally, load all the packages specified by the configuration.
+//      prog, err := conf.Load()
+//
+// See examples_test.go for examples of API usage.
+//
+//
+// CONCEPTS AND TERMINOLOGY
+//
+// The WORKSPACE is the set of packages accessible to the loader.  The
+// workspace is defined by Config.Build, a *build.Context.  The
+// default context treats subdirectories of $GOROOT and $GOPATH as
+// packages, but this behavior may be overridden.
+//
+// An AD HOC package is one specified as a set of source files on the
+// command line.  In the simplest case, it may consist of a single file
+// such as $GOROOT/src/net/http/triv.go.
+//
+// EXTERNAL TEST packages are those comprised of a set of *_test.go
+// files all with the same 'package foo_test' declaration, all in the
+// same directory.  (go/build.Package calls these files XTestFiles.)
+//
+// An IMPORTABLE package is one that can be referred to by some import
+// spec.  Every importable package is uniquely identified by its
+// PACKAGE PATH or just PATH, a string such as "fmt", "encoding/json",
+// or "cmd/vendor/golang.org/x/arch/x86/x86asm".  A package path
+// typically denotes a subdirectory of the workspace.
+//
+// An import declaration uses an IMPORT PATH to refer to a package.
+// Most import declarations use the package path as the import path.
+//
+// Due to VENDORING (https://golang.org/s/go15vendor), the
+// interpretation of an import path may depend on the directory in which
+// it appears.  To resolve an import path to a package path, go/build
+// must search the enclosing directories for a subdirectory named
+// "vendor".
+//
+// ad hoc packages and external test packages are NON-IMPORTABLE.  The
+// path of an ad hoc package is inferred from the package
+// declarations of its files and is therefore not a unique package key.
+// For example, Config.CreatePkgs may specify two initial ad hoc
+// packages, both with path "main".
+//
+// An AUGMENTED package is an importable package P plus all the
+// *_test.go files with same 'package foo' declaration as P.
+// (go/build.Package calls these files TestFiles.)
+//
+// The INITIAL packages are those specified in the configuration.  A
+// DEPENDENCY is a package loaded to satisfy an import in an initial
+// package or another dependency.
+//
+package loader
+
+// IMPLEMENTATION NOTES
+//
+// 'go test', in-package test files, and import cycles
+// ---------------------------------------------------
+//
+// An external test package may depend upon members of the augmented
+// package that are not in the unaugmented package, such as functions
+// that expose internals.  (See bufio/export_test.go for an example.)
+// So, the loader must ensure that for each external test package
+// it loads, it also augments the corresponding non-test package.
+//
+// The import graph over n unaugmented packages must be acyclic; the
+// import graph over n-1 unaugmented packages plus one augmented
+// package must also be acyclic.  ('go test' relies on this.)  But the
+// import graph over n augmented packages may contain cycles.
+//
+// First, all the (unaugmented) non-test packages and their
+// dependencies are imported in the usual way; the loader reports an
+// error if it detects an import cycle.
+//
+// Then, each package P for which testing is desired is augmented by
+// the list P' of its in-package test files, by calling
+// (*types.Checker).Files.  This arrangement ensures that P' may
+// reference definitions within P, but P may not reference definitions
+// within P'.  Furthermore, P' may import any other package, including
+// ones that depend upon P, without an import cycle error.
+//
+// Consider two packages A and B, both of which have lists of
+// in-package test files we'll call A' and B', and which have the
+// following import graph edges:
+//    B  imports A
+//    B' imports A
+//    A' imports B
+// This last edge would be expected to create an error were it not
+// for the special type-checking discipline above.
+// Cycles of size greater than two are possible.  For example:
+//   compress/bzip2/bzip2_test.go (package bzip2)  imports "io/ioutil"
+//   io/ioutil/tempfile_test.go   (package ioutil) imports "regexp"
+//   regexp/exec_test.go          (package regexp) imports "compress/bzip2"
+//
+//
+// Concurrency
+// -----------
+//
+// Let us define the import dependency graph as follows.  Each node is a
+// list of files passed to (Checker).Files at once.  Many of these lists
+// are the production code of an importable Go package, so those nodes
+// are labelled by the package's path.  The remaining nodes are
+// ad hoc packages and lists of in-package *_test.go files that augment
+// an importable package; those nodes have no label.
+//
+// The edges of the graph represent import statements appearing within a
+// file.  An edge connects a node (a list of files) to the node it
+// imports, which is importable and thus always labelled.
+//
+// Loading is controlled by this dependency graph.
+//
+// To reduce I/O latency, we start loading a package's dependencies
+// asynchronously as soon as we've parsed its files and enumerated its
+// imports (scanImports).  This performs a preorder traversal of the
+// import dependency graph.
+//
+// To exploit hardware parallelism, we type-check unrelated packages in
+// parallel, where "unrelated" means not ordered by the partial order of
+// the import dependency graph.
+//
+// We use a concurrency-safe non-blocking cache (importer.imported) to
+// record the results of type-checking, whether success or failure.  An
+// entry is created in this cache by startLoad the first time the
+// package is imported.  The first goroutine to request an entry becomes
+// responsible for completing the task and broadcasting completion to
+// subsequent requestors, which block until then.
+//
+// Type checking occurs in (parallel) postorder: we cannot type-check a
+// set of files until we have loaded and type-checked all of their
+// immediate dependencies (and thus all of their transitive
+// dependencies). If the input were guaranteed free of import cycles,
+// this would be trivial: we could simply wait for completion of the
+// dependencies and then invoke the typechecker.
+//
+// But as we saw in the 'go test' section above, some cycles in the
+// import graph over packages are actually legal, so long as the
+// cycle-forming edge originates in the in-package test files that
+// augment the package.  This explains why the nodes of the import
+// dependency graph are not packages, but lists of files: the unlabelled
+// nodes avoid the cycles.  Consider packages A and B where B imports A
+// and A's in-package tests AT import B.  The naively constructed import
+// graph over packages would contain a cycle (A+AT) --> B --> (A+AT) but
+// the graph over lists of files is AT --> B --> A, where AT is an
+// unlabelled node.
+//
+// Awaiting completion of the dependencies in a cyclic graph would
+// deadlock, so we must materialize the import dependency graph (as
+// importer.graph) and check whether each import edge forms a cycle.  If
+// x imports y, and the graph already contains a path from y to x, then
+// there is an import cycle, in which case the processing of x must not
+// wait for the completion of processing of y.
+//
+// When the type-checker makes a callback (doImport) to the loader for a
+// given import edge, there are two possible cases.  In the normal case,
+// the dependency has already been completely type-checked; doImport
+// does a cache lookup and returns it.  In the cyclic case, the entry in
+// the cache is still necessarily incomplete, indicating a cycle.  We
+// perform the cycle check again to obtain the error message, and return
+// the error.
+//
+// The result of using concurrency is about a 2.5x speedup for stdlib_test.
diff --git a/vendor/golang.org/x/tools/go/loader/loader.go b/vendor/golang.org/x/tools/go/loader/loader.go
new file mode 100644
index 0000000000..bc12ca33d1
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/loader/loader.go
@@ -0,0 +1,1086 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package loader
+
+// See doc.go for package documentation and implementation notes.
+
+import (
+	"errors"
+	"fmt"
+	"go/ast"
+	"go/build"
+	"go/parser"
+	"go/token"
+	"go/types"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+	"sync"
+	"time"
+
+	"golang.org/x/tools/go/ast/astutil"
+	"golang.org/x/tools/go/internal/cgo"
+)
+
+var ignoreVendor build.ImportMode
+
+const trace = false // show timing info for type-checking
+
+// Config specifies the configuration for loading a whole program from
+// Go source code.
+// The zero value for Config is a ready-to-use default configuration.
+type Config struct {
+	// Fset is the file set for the parser to use when loading the
+	// program.  If nil, it may be lazily initialized by any
+	// method of Config.
+	Fset *token.FileSet
+
+	// ParserMode specifies the mode to be used by the parser when
+	// loading source packages.
+	ParserMode parser.Mode
+
+	// TypeChecker contains options relating to the type checker.
+	//
+	// The supplied IgnoreFuncBodies is not used; the effective
+	// value comes from the TypeCheckFuncBodies func below.
+	// The supplied Import function is not used either.
+	TypeChecker types.Config
+
+	// TypeCheckFuncBodies is a predicate over package paths.
+	// A package for which the predicate is false will
+	// have its package-level declarations type checked, but not
+	// its function bodies; this can be used to quickly load
+	// dependencies from source.  If nil, all func bodies are type
+	// checked.
+	TypeCheckFuncBodies func(path string) bool
+
+	// If Build is non-nil, it is used to locate source packages.
+	// Otherwise &build.Default is used.
+	//
+	// By default, cgo is invoked to preprocess Go files that
+	// import the fake package "C".  This behaviour can be
+	// disabled by setting CGO_ENABLED=0 in the environment prior
+	// to startup, or by setting Build.CgoEnabled=false.
+	Build *build.Context
+
+	// The current directory, used for resolving relative package
+	// references such as "./go/loader".  If empty, os.Getwd will be
+	// used instead.
+	Cwd string
+
+	// If DisplayPath is non-nil, it is used to transform each
+	// file name obtained from Build.Import().  This can be used
+	// to prevent a virtualized build.Config's file names from
+	// leaking into the user interface.
+	DisplayPath func(path string) string
+
+	// If AllowErrors is true, Load will return a Program even
+	// if some of the its packages contained I/O, parser or type
+	// errors; such errors are accessible via PackageInfo.Errors.  If
+	// false, Load will fail if any package had an error.
+	AllowErrors bool
+
+	// CreatePkgs specifies a list of non-importable initial
+	// packages to create.  The resulting packages will appear in
+	// the corresponding elements of the Program.Created slice.
+	CreatePkgs []PkgSpec
+
+	// ImportPkgs specifies a set of initial packages to load.
+	// The map keys are package paths.
+	//
+	// The map value indicates whether to load tests.  If true, Load
+	// will add and type-check two lists of files to the package:
+	// non-test files followed by in-package *_test.go files.  In
+	// addition, it will append the external test package (if any)
+	// to Program.Created.
+	ImportPkgs map[string]bool
+
+	// FindPackage is called during Load to create the build.Package
+	// for a given import path from a given directory.
+	// If FindPackage is nil, (*build.Context).Import is used.
+	// A client may use this hook to adapt to a proprietary build
+	// system that does not follow the "go build" layout
+	// conventions, for example.
+	//
+	// It must be safe to call concurrently from multiple goroutines.
+	FindPackage func(ctxt *build.Context, importPath, fromDir string, mode build.ImportMode) (*build.Package, error)
+
+	// AfterTypeCheck is called immediately after a list of files
+	// has been type-checked and appended to info.Files.
+	//
+	// This optional hook function is the earliest opportunity for
+	// the client to observe the output of the type checker,
+	// which may be useful to reduce analysis latency when loading
+	// a large program.
+	//
+	// The function is permitted to modify info.Info, for instance
+	// to clear data structures that are no longer needed, which can
+	// dramatically reduce peak memory consumption.
+	//
+	// The function may be called twice for the same PackageInfo:
+	// once for the files of the package and again for the
+	// in-package test files.
+	//
+	// It must be safe to call concurrently from multiple goroutines.
+	AfterTypeCheck func(info *PackageInfo, files []*ast.File)
+}
+
+// A PkgSpec specifies a non-importable package to be created by Load.
+// Files are processed first, but typically only one of Files and
+// Filenames is provided.  The path needn't be globally unique.
+//
+// For vendoring purposes, the package's directory is the one that
+// contains the first file.
+type PkgSpec struct {
+	Path      string      // package path ("" => use package declaration)
+	Files     []*ast.File // ASTs of already-parsed files
+	Filenames []string    // names of files to be parsed
+}
+
+// A Program is a Go program loaded from source as specified by a Config.
+type Program struct {
+	Fset *token.FileSet // the file set for this program
+
+	// Created[i] contains the initial package whose ASTs or
+	// filenames were supplied by Config.CreatePkgs[i], followed by
+	// the external test package, if any, of each package in
+	// Config.ImportPkgs ordered by ImportPath.
+	//
+	// NOTE: these files must not import "C".  Cgo preprocessing is
+	// only performed on imported packages, not ad hoc packages.
+	//
+	// TODO(adonovan): we need to copy and adapt the logic of
+	// goFilesPackage (from $GOROOT/src/cmd/go/build.go) and make
+	// Config.Import and Config.Create methods return the same kind
+	// of entity, essentially a build.Package.
+	// Perhaps we can even reuse that type directly.
+	Created []*PackageInfo
+
+	// Imported contains the initially imported packages,
+	// as specified by Config.ImportPkgs.
+	Imported map[string]*PackageInfo
+
+	// AllPackages contains the PackageInfo of every package
+	// encountered by Load: all initial packages and all
+	// dependencies, including incomplete ones.
+	AllPackages map[*types.Package]*PackageInfo
+
+	// importMap is the canonical mapping of package paths to
+	// packages.  It contains all Imported initial packages, but not
+	// Created ones, and all imported dependencies.
+	importMap map[string]*types.Package
+}
+
+// PackageInfo holds the ASTs and facts derived by the type-checker
+// for a single package.
+//
+// Not mutated once exposed via the API.
+//
+type PackageInfo struct {
+	Pkg                   *types.Package
+	Importable            bool        // true if 'import "Pkg.Path()"' would resolve to this
+	TransitivelyErrorFree bool        // true if Pkg and all its dependencies are free of errors
+	Files                 []*ast.File // syntax trees for the package's files
+	Errors                []error     // non-nil if the package had errors
+	types.Info                        // type-checker deductions.
+	dir                   string      // package directory
+
+	checker   *types.Checker // transient type-checker state
+	errorFunc func(error)
+}
+
+func (info *PackageInfo) String() string { return info.Pkg.Path() }
+
+func (info *PackageInfo) appendError(err error) {
+	if info.errorFunc != nil {
+		info.errorFunc(err)
+	} else {
+		fmt.Fprintln(os.Stderr, err)
+	}
+	info.Errors = append(info.Errors, err)
+}
+
+func (conf *Config) fset() *token.FileSet {
+	if conf.Fset == nil {
+		conf.Fset = token.NewFileSet()
+	}
+	return conf.Fset
+}
+
+// ParseFile is a convenience function (intended for testing) that invokes
+// the parser using the Config's FileSet, which is initialized if nil.
+//
+// src specifies the parser input as a string, []byte, or io.Reader, and
+// filename is its apparent name.  If src is nil, the contents of
+// filename are read from the file system.
+//
+func (conf *Config) ParseFile(filename string, src interface{}) (*ast.File, error) {
+	// TODO(adonovan): use conf.build() etc like parseFiles does.
+	return parser.ParseFile(conf.fset(), filename, src, conf.ParserMode)
+}
+
+// FromArgsUsage is a partial usage message that applications calling
+// FromArgs may wish to include in their -help output.
+const FromArgsUsage = `
+<args> is a list of arguments denoting a set of initial packages.
+It may take one of two forms:
+
+1. A list of *.go source files.
+
+   All of the specified files are loaded, parsed and type-checked
+   as a single package.  All the files must belong to the same directory.
+
+2. A list of import paths, each denoting a package.
+
+   The package's directory is found relative to the $GOROOT and
+   $GOPATH using similar logic to 'go build', and the *.go files in
+   that directory are loaded, parsed and type-checked as a single
+   package.
+
+   In addition, all *_test.go files in the directory are then loaded
+   and parsed.  Those files whose package declaration equals that of
+   the non-*_test.go files are included in the primary package.  Test
+   files whose package declaration ends with "_test" are type-checked
+   as another package, the 'external' test package, so that a single
+   import path may denote two packages.  (Whether this behaviour is
+   enabled is tool-specific, and may depend on additional flags.)
+
+A '--' argument terminates the list of packages.
+`
+
+// FromArgs interprets args as a set of initial packages to load from
+// source and updates the configuration.  It returns the list of
+// unconsumed arguments.
+//
+// It is intended for use in command-line interfaces that require a
+// set of initial packages to be specified; see FromArgsUsage message
+// for details.
+//
+// Only superficial errors are reported at this stage; errors dependent
+// on I/O are detected during Load.
+//
+func (conf *Config) FromArgs(args []string, xtest bool) ([]string, error) {
+	var rest []string
+	for i, arg := range args {
+		if arg == "--" {
+			rest = args[i+1:]
+			args = args[:i]
+			break // consume "--" and return the remaining args
+		}
+	}
+
+	if len(args) > 0 && strings.HasSuffix(args[0], ".go") {
+		// Assume args is a list of a *.go files
+		// denoting a single ad hoc package.
+		for _, arg := range args {
+			if !strings.HasSuffix(arg, ".go") {
+				return nil, fmt.Errorf("named files must be .go files: %s", arg)
+			}
+		}
+		conf.CreateFromFilenames("", args...)
+	} else {
+		// Assume args are directories each denoting a
+		// package and (perhaps) an external test, iff xtest.
+		for _, arg := range args {
+			if xtest {
+				conf.ImportWithTests(arg)
+			} else {
+				conf.Import(arg)
+			}
+		}
+	}
+
+	return rest, nil
+}
+
+// CreateFromFilenames is a convenience function that adds
+// a conf.CreatePkgs entry to create a package of the specified *.go
+// files.
+//
+func (conf *Config) CreateFromFilenames(path string, filenames ...string) {
+	conf.CreatePkgs = append(conf.CreatePkgs, PkgSpec{Path: path, Filenames: filenames})
+}
+
+// CreateFromFiles is a convenience function that adds a conf.CreatePkgs
+// entry to create package of the specified path and parsed files.
+//
+func (conf *Config) CreateFromFiles(path string, files ...*ast.File) {
+	conf.CreatePkgs = append(conf.CreatePkgs, PkgSpec{Path: path, Files: files})
+}
+
+// ImportWithTests is a convenience function that adds path to
+// ImportPkgs, the set of initial source packages located relative to
+// $GOPATH.  The package will be augmented by any *_test.go files in
+// its directory that contain a "package x" (not "package x_test")
+// declaration.
+//
+// In addition, if any *_test.go files contain a "package x_test"
+// declaration, an additional package comprising just those files will
+// be added to CreatePkgs.
+//
+func (conf *Config) ImportWithTests(path string) { conf.addImport(path, true) }
+
+// Import is a convenience function that adds path to ImportPkgs, the
+// set of initial packages that will be imported from source.
+//
+func (conf *Config) Import(path string) { conf.addImport(path, false) }
+
+func (conf *Config) addImport(path string, tests bool) {
+	if path == "C" {
+		return // ignore; not a real package
+	}
+	if conf.ImportPkgs == nil {
+		conf.ImportPkgs = make(map[string]bool)
+	}
+	conf.ImportPkgs[path] = conf.ImportPkgs[path] || tests
+}
+
+// PathEnclosingInterval returns the PackageInfo and ast.Node that
+// contain source interval [start, end), and all the node's ancestors
+// up to the AST root.  It searches all ast.Files of all packages in prog.
+// exact is defined as for astutil.PathEnclosingInterval.
+//
+// The zero value is returned if not found.
+//
+func (prog *Program) PathEnclosingInterval(start, end token.Pos) (pkg *PackageInfo, path []ast.Node, exact bool) {
+	for _, info := range prog.AllPackages {
+		for _, f := range info.Files {
+			if f.Pos() == token.NoPos {
+				// This can happen if the parser saw
+				// too many errors and bailed out.
+				// (Use parser.AllErrors to prevent that.)
+				continue
+			}
+			if !tokenFileContainsPos(prog.Fset.File(f.Pos()), start) {
+				continue
+			}
+			if path, exact := astutil.PathEnclosingInterval(f, start, end); path != nil {
+				return info, path, exact
+			}
+		}
+	}
+	return nil, nil, false
+}
+
+// InitialPackages returns a new slice containing the set of initial
+// packages (Created + Imported) in unspecified order.
+//
+func (prog *Program) InitialPackages() []*PackageInfo {
+	infos := make([]*PackageInfo, 0, len(prog.Created)+len(prog.Imported))
+	infos = append(infos, prog.Created...)
+	for _, info := range prog.Imported {
+		infos = append(infos, info)
+	}
+	return infos
+}
+
+// Package returns the ASTs and results of type checking for the
+// specified package.
+func (prog *Program) Package(path string) *PackageInfo {
+	if info, ok := prog.AllPackages[prog.importMap[path]]; ok {
+		return info
+	}
+	for _, info := range prog.Created {
+		if path == info.Pkg.Path() {
+			return info
+		}
+	}
+	return nil
+}
+
+// ---------- Implementation ----------
+
+// importer holds the working state of the algorithm.
+type importer struct {
+	conf  *Config   // the client configuration
+	start time.Time // for logging
+
+	progMu sync.Mutex // guards prog
+	prog   *Program   // the resulting program
+
+	// findpkg is a memoization of FindPackage.
+	findpkgMu sync.Mutex // guards findpkg
+	findpkg   map[findpkgKey]*findpkgValue
+
+	importedMu sync.Mutex             // guards imported
+	imported   map[string]*importInfo // all imported packages (incl. failures) by import path
+
+	// import dependency graph: graph[x][y] => x imports y
+	//
+	// Since non-importable packages cannot be cyclic, we ignore
+	// their imports, thus we only need the subgraph over importable
+	// packages.  Nodes are identified by their import paths.
+	graphMu sync.Mutex
+	graph   map[string]map[string]bool
+}
+
+type findpkgKey struct {
+	importPath string
+	fromDir    string
+	mode       build.ImportMode
+}
+
+type findpkgValue struct {
+	ready chan struct{} // closed to broadcast readiness
+	bp    *build.Package
+	err   error
+}
+
+// importInfo tracks the success or failure of a single import.
+//
+// Upon completion, exactly one of info and err is non-nil:
+// info on successful creation of a package, err otherwise.
+// A successful package may still contain type errors.
+//
+type importInfo struct {
+	path     string        // import path
+	info     *PackageInfo  // results of typechecking (including errors)
+	complete chan struct{} // closed to broadcast that info is set.
+}
+
+// awaitCompletion blocks until ii is complete,
+// i.e. the info field is safe to inspect.
+func (ii *importInfo) awaitCompletion() {
+	<-ii.complete // wait for close
+}
+
+// Complete marks ii as complete.
+// Its info and err fields will not be subsequently updated.
+func (ii *importInfo) Complete(info *PackageInfo) {
+	if info == nil {
+		panic("info == nil")
+	}
+	ii.info = info
+	close(ii.complete)
+}
+
+type importError struct {
+	path string // import path
+	err  error  // reason for failure to create a package
+}
+
+// Load creates the initial packages specified by conf.{Create,Import}Pkgs,
+// loading their dependencies packages as needed.
+//
+// On success, Load returns a Program containing a PackageInfo for
+// each package.  On failure, it returns an error.
+//
+// If AllowErrors is true, Load will return a Program even if some
+// packages contained I/O, parser or type errors, or if dependencies
+// were missing.  (Such errors are accessible via PackageInfo.Errors.  If
+// false, Load will fail if any package had an error.
+//
+// It is an error if no packages were loaded.
+//
+func (conf *Config) Load() (*Program, error) {
+	// Create a simple default error handler for parse/type errors.
+	if conf.TypeChecker.Error == nil {
+		conf.TypeChecker.Error = func(e error) { fmt.Fprintln(os.Stderr, e) }
+	}
+
+	// Set default working directory for relative package references.
+	if conf.Cwd == "" {
+		var err error
+		conf.Cwd, err = os.Getwd()
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	// Install default FindPackage hook using go/build logic.
+	if conf.FindPackage == nil {
+		conf.FindPackage = (*build.Context).Import
+	}
+
+	prog := &Program{
+		Fset:        conf.fset(),
+		Imported:    make(map[string]*PackageInfo),
+		importMap:   make(map[string]*types.Package),
+		AllPackages: make(map[*types.Package]*PackageInfo),
+	}
+
+	imp := importer{
+		conf:     conf,
+		prog:     prog,
+		findpkg:  make(map[findpkgKey]*findpkgValue),
+		imported: make(map[string]*importInfo),
+		start:    time.Now(),
+		graph:    make(map[string]map[string]bool),
+	}
+
+	// -- loading proper (concurrent phase) --------------------------------
+
+	var errpkgs []string // packages that contained errors
+
+	// Load the initially imported packages and their dependencies,
+	// in parallel.
+	// No vendor check on packages imported from the command line.
+	infos, importErrors := imp.importAll("", conf.Cwd, conf.ImportPkgs, ignoreVendor)
+	for _, ie := range importErrors {
+		conf.TypeChecker.Error(ie.err) // failed to create package
+		errpkgs = append(errpkgs, ie.path)
+	}
+	for _, info := range infos {
+		prog.Imported[info.Pkg.Path()] = info
+	}
+
+	// Augment the designated initial packages by their tests.
+	// Dependencies are loaded in parallel.
+	var xtestPkgs []*build.Package
+	for importPath, augment := range conf.ImportPkgs {
+		if !augment {
+			continue
+		}
+
+		// No vendor check on packages imported from command line.
+		bp, err := imp.findPackage(importPath, conf.Cwd, ignoreVendor)
+		if err != nil {
+			// Package not found, or can't even parse package declaration.
+			// Already reported by previous loop; ignore it.
+			continue
+		}
+
+		// Needs external test package?
+		if len(bp.XTestGoFiles) > 0 {
+			xtestPkgs = append(xtestPkgs, bp)
+		}
+
+		// Consult the cache using the canonical package path.
+		path := bp.ImportPath
+		imp.importedMu.Lock() // (unnecessary, we're sequential here)
+		ii, ok := imp.imported[path]
+		// Paranoid checks added due to issue #11012.
+		if !ok {
+			// Unreachable.
+			// The previous loop called importAll and thus
+			// startLoad for each path in ImportPkgs, which
+			// populates imp.imported[path] with a non-zero value.
+			panic(fmt.Sprintf("imported[%q] not found", path))
+		}
+		if ii == nil {
+			// Unreachable.
+			// The ii values in this loop are the same as in
+			// the previous loop, which enforced the invariant
+			// that at least one of ii.err and ii.info is non-nil.
+			panic(fmt.Sprintf("imported[%q] == nil", path))
+		}
+		if ii.info == nil {
+			// Unreachable.
+			// awaitCompletion has the postcondition
+			// ii.info != nil.
+			panic(fmt.Sprintf("imported[%q].info = nil", path))
+		}
+		info := ii.info
+		imp.importedMu.Unlock()
+
+		// Parse the in-package test files.
+		files, errs := imp.conf.parsePackageFiles(bp, 't')
+		for _, err := range errs {
+			info.appendError(err)
+		}
+
+		// The test files augmenting package P cannot be imported,
+		// but may import packages that import P,
+		// so we must disable the cycle check.
+		imp.addFiles(info, files, false)
+	}
+
+	createPkg := func(path, dir string, files []*ast.File, errs []error) {
+		info := imp.newPackageInfo(path, dir)
+		for _, err := range errs {
+			info.appendError(err)
+		}
+
+		// Ad hoc packages are non-importable,
+		// so no cycle check is needed.
+		// addFiles loads dependencies in parallel.
+		imp.addFiles(info, files, false)
+		prog.Created = append(prog.Created, info)
+	}
+
+	// Create packages specified by conf.CreatePkgs.
+	for _, cp := range conf.CreatePkgs {
+		files, errs := parseFiles(conf.fset(), conf.build(), nil, conf.Cwd, cp.Filenames, conf.ParserMode)
+		files = append(files, cp.Files...)
+
+		path := cp.Path
+		if path == "" {
+			if len(files) > 0 {
+				path = files[0].Name.Name
+			} else {
+				path = "(unnamed)"
+			}
+		}
+
+		dir := conf.Cwd
+		if len(files) > 0 && files[0].Pos().IsValid() {
+			dir = filepath.Dir(conf.fset().File(files[0].Pos()).Name())
+		}
+		createPkg(path, dir, files, errs)
+	}
+
+	// Create external test packages.
+	sort.Sort(byImportPath(xtestPkgs))
+	for _, bp := range xtestPkgs {
+		files, errs := imp.conf.parsePackageFiles(bp, 'x')
+		createPkg(bp.ImportPath+"_test", bp.Dir, files, errs)
+	}
+
+	// -- finishing up (sequential) ----------------------------------------
+
+	if len(prog.Imported)+len(prog.Created) == 0 {
+		return nil, errors.New("no initial packages were loaded")
+	}
+
+	// Create infos for indirectly imported packages.
+	// e.g. incomplete packages without syntax, loaded from export data.
+	for _, obj := range prog.importMap {
+		info := prog.AllPackages[obj]
+		if info == nil {
+			prog.AllPackages[obj] = &PackageInfo{Pkg: obj, Importable: true}
+		} else {
+			// finished
+			info.checker = nil
+			info.errorFunc = nil
+		}
+	}
+
+	if !conf.AllowErrors {
+		// Report errors in indirectly imported packages.
+		for _, info := range prog.AllPackages {
+			if len(info.Errors) > 0 {
+				errpkgs = append(errpkgs, info.Pkg.Path())
+			}
+		}
+		if errpkgs != nil {
+			var more string
+			if len(errpkgs) > 3 {
+				more = fmt.Sprintf(" and %d more", len(errpkgs)-3)
+				errpkgs = errpkgs[:3]
+			}
+			return nil, fmt.Errorf("couldn't load packages due to errors: %s%s",
+				strings.Join(errpkgs, ", "), more)
+		}
+	}
+
+	markErrorFreePackages(prog.AllPackages)
+
+	return prog, nil
+}
+
+type byImportPath []*build.Package
+
+func (b byImportPath) Len() int           { return len(b) }
+func (b byImportPath) Less(i, j int) bool { return b[i].ImportPath < b[j].ImportPath }
+func (b byImportPath) Swap(i, j int)      { b[i], b[j] = b[j], b[i] }
+
+// markErrorFreePackages sets the TransitivelyErrorFree flag on all
+// applicable packages.
+func markErrorFreePackages(allPackages map[*types.Package]*PackageInfo) {
+	// Build the transpose of the import graph.
+	importedBy := make(map[*types.Package]map[*types.Package]bool)
+	for P := range allPackages {
+		for _, Q := range P.Imports() {
+			clients, ok := importedBy[Q]
+			if !ok {
+				clients = make(map[*types.Package]bool)
+				importedBy[Q] = clients
+			}
+			clients[P] = true
+		}
+	}
+
+	// Find all packages reachable from some error package.
+	reachable := make(map[*types.Package]bool)
+	var visit func(*types.Package)
+	visit = func(p *types.Package) {
+		if !reachable[p] {
+			reachable[p] = true
+			for q := range importedBy[p] {
+				visit(q)
+			}
+		}
+	}
+	for _, info := range allPackages {
+		if len(info.Errors) > 0 {
+			visit(info.Pkg)
+		}
+	}
+
+	// Mark the others as "transitively error-free".
+	for _, info := range allPackages {
+		if !reachable[info.Pkg] {
+			info.TransitivelyErrorFree = true
+		}
+	}
+}
+
+// build returns the effective build context.
+func (conf *Config) build() *build.Context {
+	if conf.Build != nil {
+		return conf.Build
+	}
+	return &build.Default
+}
+
+// parsePackageFiles enumerates the files belonging to package path,
+// then loads, parses and returns them, plus a list of I/O or parse
+// errors that were encountered.
+//
+// 'which' indicates which files to include:
+//    'g': include non-test *.go source files (GoFiles + processed CgoFiles)
+//    't': include in-package *_test.go source files (TestGoFiles)
+//    'x': include external *_test.go source files. (XTestGoFiles)
+//
+func (conf *Config) parsePackageFiles(bp *build.Package, which rune) ([]*ast.File, []error) {
+	if bp.ImportPath == "unsafe" {
+		return nil, nil
+	}
+	var filenames []string
+	switch which {
+	case 'g':
+		filenames = bp.GoFiles
+	case 't':
+		filenames = bp.TestGoFiles
+	case 'x':
+		filenames = bp.XTestGoFiles
+	default:
+		panic(which)
+	}
+
+	files, errs := parseFiles(conf.fset(), conf.build(), conf.DisplayPath, bp.Dir, filenames, conf.ParserMode)
+
+	// Preprocess CgoFiles and parse the outputs (sequentially).
+	if which == 'g' && bp.CgoFiles != nil {
+		cgofiles, err := cgo.ProcessFiles(bp, conf.fset(), conf.DisplayPath, conf.ParserMode)
+		if err != nil {
+			errs = append(errs, err)
+		} else {
+			files = append(files, cgofiles...)
+		}
+	}
+
+	return files, errs
+}
+
+// doImport imports the package denoted by path.
+// It implements the types.Importer signature.
+//
+// It returns an error if a package could not be created
+// (e.g. go/build or parse error), but type errors are reported via
+// the types.Config.Error callback (the first of which is also saved
+// in the package's PackageInfo).
+//
+// Idempotent.
+//
+func (imp *importer) doImport(from *PackageInfo, to string) (*types.Package, error) {
+	if to == "C" {
+		// This should be unreachable, but ad hoc packages are
+		// not currently subject to cgo preprocessing.
+		// See https://golang.org/issue/11627.
+		return nil, fmt.Errorf(`the loader doesn't cgo-process ad hoc packages like %q; see Go issue 11627`,
+			from.Pkg.Path())
+	}
+
+	bp, err := imp.findPackage(to, from.dir, 0)
+	if err != nil {
+		return nil, err
+	}
+
+	// The standard unsafe package is handled specially,
+	// and has no PackageInfo.
+	if bp.ImportPath == "unsafe" {
+		return types.Unsafe, nil
+	}
+
+	// Look for the package in the cache using its canonical path.
+	path := bp.ImportPath
+	imp.importedMu.Lock()
+	ii := imp.imported[path]
+	imp.importedMu.Unlock()
+	if ii == nil {
+		panic("internal error: unexpected import: " + path)
+	}
+	if ii.info != nil {
+		return ii.info.Pkg, nil
+	}
+
+	// Import of incomplete package: this indicates a cycle.
+	fromPath := from.Pkg.Path()
+	if cycle := imp.findPath(path, fromPath); cycle != nil {
+		// Normalize cycle: start from alphabetically largest node.
+		pos, start := -1, ""
+		for i, s := range cycle {
+			if pos < 0 || s > start {
+				pos, start = i, s
+			}
+		}
+		cycle = append(cycle, cycle[:pos]...)[pos:] // rotate cycle to start from largest
+		cycle = append(cycle, cycle[0])             // add start node to end to show cycliness
+		return nil, fmt.Errorf("import cycle: %s", strings.Join(cycle, " -> "))
+	}
+
+	panic("internal error: import of incomplete (yet acyclic) package: " + fromPath)
+}
+
+// findPackage locates the package denoted by the importPath in the
+// specified directory.
+func (imp *importer) findPackage(importPath, fromDir string, mode build.ImportMode) (*build.Package, error) {
+	// We use a non-blocking duplicate-suppressing cache (gopl.io §9.7)
+	// to avoid holding the lock around FindPackage.
+	key := findpkgKey{importPath, fromDir, mode}
+	imp.findpkgMu.Lock()
+	v, ok := imp.findpkg[key]
+	if ok {
+		// cache hit
+		imp.findpkgMu.Unlock()
+
+		<-v.ready // wait for entry to become ready
+	} else {
+		// Cache miss: this goroutine becomes responsible for
+		// populating the map entry and broadcasting its readiness.
+		v = &findpkgValue{ready: make(chan struct{})}
+		imp.findpkg[key] = v
+		imp.findpkgMu.Unlock()
+
+		ioLimit <- true
+		v.bp, v.err = imp.conf.FindPackage(imp.conf.build(), importPath, fromDir, mode)
+		<-ioLimit
+
+		if _, ok := v.err.(*build.NoGoError); ok {
+			v.err = nil // empty directory is not an error
+		}
+
+		close(v.ready) // broadcast ready condition
+	}
+	return v.bp, v.err
+}
+
+// importAll loads, parses, and type-checks the specified packages in
+// parallel and returns their completed importInfos in unspecified order.
+//
+// fromPath is the package path of the importing package, if it is
+// importable, "" otherwise.  It is used for cycle detection.
+//
+// fromDir is the directory containing the import declaration that
+// caused these imports.
+//
+func (imp *importer) importAll(fromPath, fromDir string, imports map[string]bool, mode build.ImportMode) (infos []*PackageInfo, errors []importError) {
+	// TODO(adonovan): opt: do the loop in parallel once
+	// findPackage is non-blocking.
+	var pending []*importInfo
+	for importPath := range imports {
+		bp, err := imp.findPackage(importPath, fromDir, mode)
+		if err != nil {
+			errors = append(errors, importError{
+				path: importPath,
+				err:  err,
+			})
+			continue
+		}
+		pending = append(pending, imp.startLoad(bp))
+	}
+
+	if fromPath != "" {
+		// We're loading a set of imports.
+		//
+		// We must record graph edges from the importing package
+		// to its dependencies, and check for cycles.
+		imp.graphMu.Lock()
+		deps, ok := imp.graph[fromPath]
+		if !ok {
+			deps = make(map[string]bool)
+			imp.graph[fromPath] = deps
+		}
+		for _, ii := range pending {
+			deps[ii.path] = true
+		}
+		imp.graphMu.Unlock()
+	}
+
+	for _, ii := range pending {
+		if fromPath != "" {
+			if cycle := imp.findPath(ii.path, fromPath); cycle != nil {
+				// Cycle-forming import: we must not await its
+				// completion since it would deadlock.
+				//
+				// We don't record the error in ii since
+				// the error is really associated with the
+				// cycle-forming edge, not the package itself.
+				// (Also it would complicate the
+				// invariants of importPath completion.)
+				if trace {
+					fmt.Fprintf(os.Stderr, "import cycle: %q\n", cycle)
+				}
+				continue
+			}
+		}
+		ii.awaitCompletion()
+		infos = append(infos, ii.info)
+	}
+
+	return infos, errors
+}
+
+// findPath returns an arbitrary path from 'from' to 'to' in the import
+// graph, or nil if there was none.
+func (imp *importer) findPath(from, to string) []string {
+	imp.graphMu.Lock()
+	defer imp.graphMu.Unlock()
+
+	seen := make(map[string]bool)
+	var search func(stack []string, importPath string) []string
+	search = func(stack []string, importPath string) []string {
+		if !seen[importPath] {
+			seen[importPath] = true
+			stack = append(stack, importPath)
+			if importPath == to {
+				return stack
+			}
+			for x := range imp.graph[importPath] {
+				if p := search(stack, x); p != nil {
+					return p
+				}
+			}
+		}
+		return nil
+	}
+	return search(make([]string, 0, 20), from)
+}
+
+// startLoad initiates the loading, parsing and type-checking of the
+// specified package and its dependencies, if it has not already begun.
+//
+// It returns an importInfo, not necessarily in a completed state.  The
+// caller must call awaitCompletion() before accessing its info field.
+//
+// startLoad is concurrency-safe and idempotent.
+//
+func (imp *importer) startLoad(bp *build.Package) *importInfo {
+	path := bp.ImportPath
+	imp.importedMu.Lock()
+	ii, ok := imp.imported[path]
+	if !ok {
+		ii = &importInfo{path: path, complete: make(chan struct{})}
+		imp.imported[path] = ii
+		go func() {
+			info := imp.load(bp)
+			ii.Complete(info)
+		}()
+	}
+	imp.importedMu.Unlock()
+
+	return ii
+}
+
+// load implements package loading by parsing Go source files
+// located by go/build.
+func (imp *importer) load(bp *build.Package) *PackageInfo {
+	info := imp.newPackageInfo(bp.ImportPath, bp.Dir)
+	info.Importable = true
+	files, errs := imp.conf.parsePackageFiles(bp, 'g')
+	for _, err := range errs {
+		info.appendError(err)
+	}
+
+	imp.addFiles(info, files, true)
+
+	imp.progMu.Lock()
+	imp.prog.importMap[bp.ImportPath] = info.Pkg
+	imp.progMu.Unlock()
+
+	return info
+}
+
+// addFiles adds and type-checks the specified files to info, loading
+// their dependencies if needed.  The order of files determines the
+// package initialization order.  It may be called multiple times on the
+// same package.  Errors are appended to the info.Errors field.
+//
+// cycleCheck determines whether the imports within files create
+// dependency edges that should be checked for potential cycles.
+//
+func (imp *importer) addFiles(info *PackageInfo, files []*ast.File, cycleCheck bool) {
+	// Ensure the dependencies are loaded, in parallel.
+	var fromPath string
+	if cycleCheck {
+		fromPath = info.Pkg.Path()
+	}
+	// TODO(adonovan): opt: make the caller do scanImports.
+	// Callers with a build.Package can skip it.
+	imp.importAll(fromPath, info.dir, scanImports(files), 0)
+
+	if trace {
+		fmt.Fprintf(os.Stderr, "%s: start %q (%d)\n",
+			time.Since(imp.start), info.Pkg.Path(), len(files))
+	}
+
+	// Don't call checker.Files on Unsafe, even with zero files,
+	// because it would mutate the package, which is a global.
+	if info.Pkg == types.Unsafe {
+		if len(files) > 0 {
+			panic(`"unsafe" package contains unexpected files`)
+		}
+	} else {
+		// Ignore the returned (first) error since we
+		// already collect them all in the PackageInfo.
+		info.checker.Files(files)
+		info.Files = append(info.Files, files...)
+	}
+
+	if imp.conf.AfterTypeCheck != nil {
+		imp.conf.AfterTypeCheck(info, files)
+	}
+
+	if trace {
+		fmt.Fprintf(os.Stderr, "%s: stop %q\n",
+			time.Since(imp.start), info.Pkg.Path())
+	}
+}
+
+func (imp *importer) newPackageInfo(path, dir string) *PackageInfo {
+	var pkg *types.Package
+	if path == "unsafe" {
+		pkg = types.Unsafe
+	} else {
+		pkg = types.NewPackage(path, "")
+	}
+	info := &PackageInfo{
+		Pkg: pkg,
+		Info: types.Info{
+			Types:      make(map[ast.Expr]types.TypeAndValue),
+			Defs:       make(map[*ast.Ident]types.Object),
+			Uses:       make(map[*ast.Ident]types.Object),
+			Implicits:  make(map[ast.Node]types.Object),
+			Scopes:     make(map[ast.Node]*types.Scope),
+			Selections: make(map[*ast.SelectorExpr]*types.Selection),
+		},
+		errorFunc: imp.conf.TypeChecker.Error,
+		dir:       dir,
+	}
+
+	// Copy the types.Config so we can vary it across PackageInfos.
+	tc := imp.conf.TypeChecker
+	tc.IgnoreFuncBodies = false
+	if f := imp.conf.TypeCheckFuncBodies; f != nil {
+		tc.IgnoreFuncBodies = !f(path)
+	}
+	tc.Importer = closure{imp, info}
+	tc.Error = info.appendError // appendError wraps the user's Error function
+
+	info.checker = types.NewChecker(&tc, imp.conf.fset(), pkg, &info.Info)
+	imp.progMu.Lock()
+	imp.prog.AllPackages[pkg] = info
+	imp.progMu.Unlock()
+	return info
+}
+
+type closure struct {
+	imp  *importer
+	info *PackageInfo
+}
+
+func (c closure) Import(to string) (*types.Package, error) { return c.imp.doImport(c.info, to) }
diff --git a/vendor/golang.org/x/tools/go/loader/util.go b/vendor/golang.org/x/tools/go/loader/util.go
new file mode 100644
index 0000000000..7f38dd7407
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/loader/util.go
@@ -0,0 +1,124 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package loader
+
+import (
+	"go/ast"
+	"go/build"
+	"go/parser"
+	"go/token"
+	"io"
+	"os"
+	"strconv"
+	"sync"
+
+	"golang.org/x/tools/go/buildutil"
+)
+
+// We use a counting semaphore to limit
+// the number of parallel I/O calls per process.
+var ioLimit = make(chan bool, 10)
+
+// parseFiles parses the Go source files within directory dir and
+// returns the ASTs of the ones that could be at least partially parsed,
+// along with a list of I/O and parse errors encountered.
+//
+// I/O is done via ctxt, which may specify a virtual file system.
+// displayPath is used to transform the filenames attached to the ASTs.
+//
+func parseFiles(fset *token.FileSet, ctxt *build.Context, displayPath func(string) string, dir string, files []string, mode parser.Mode) ([]*ast.File, []error) {
+	if displayPath == nil {
+		displayPath = func(path string) string { return path }
+	}
+	var wg sync.WaitGroup
+	n := len(files)
+	parsed := make([]*ast.File, n)
+	errors := make([]error, n)
+	for i, file := range files {
+		if !buildutil.IsAbsPath(ctxt, file) {
+			file = buildutil.JoinPath(ctxt, dir, file)
+		}
+		wg.Add(1)
+		go func(i int, file string) {
+			ioLimit <- true // wait
+			defer func() {
+				wg.Done()
+				<-ioLimit // signal
+			}()
+			var rd io.ReadCloser
+			var err error
+			if ctxt.OpenFile != nil {
+				rd, err = ctxt.OpenFile(file)
+			} else {
+				rd, err = os.Open(file)
+			}
+			if err != nil {
+				errors[i] = err // open failed
+				return
+			}
+
+			// ParseFile may return both an AST and an error.
+			parsed[i], errors[i] = parser.ParseFile(fset, displayPath(file), rd, mode)
+			rd.Close()
+		}(i, file)
+	}
+	wg.Wait()
+
+	// Eliminate nils, preserving order.
+	var o int
+	for _, f := range parsed {
+		if f != nil {
+			parsed[o] = f
+			o++
+		}
+	}
+	parsed = parsed[:o]
+
+	o = 0
+	for _, err := range errors {
+		if err != nil {
+			errors[o] = err
+			o++
+		}
+	}
+	errors = errors[:o]
+
+	return parsed, errors
+}
+
+// scanImports returns the set of all import paths from all
+// import specs in the specified files.
+func scanImports(files []*ast.File) map[string]bool {
+	imports := make(map[string]bool)
+	for _, f := range files {
+		for _, decl := range f.Decls {
+			if decl, ok := decl.(*ast.GenDecl); ok && decl.Tok == token.IMPORT {
+				for _, spec := range decl.Specs {
+					spec := spec.(*ast.ImportSpec)
+
+					// NB: do not assume the program is well-formed!
+					path, err := strconv.Unquote(spec.Path.Value)
+					if err != nil {
+						continue // quietly ignore the error
+					}
+					if path == "C" {
+						continue // skip pseudopackage
+					}
+					imports[path] = true
+				}
+			}
+		}
+	}
+	return imports
+}
+
+// ---------- Internal helpers ----------
+
+// TODO(adonovan): make this a method: func (*token.File) Contains(token.Pos)
+func tokenFileContainsPos(f *token.File, pos token.Pos) bool {
+	p := int(pos)
+	base := f.Base()
+	return base <= p && p < base+f.Size()
+}
diff --git a/vendor/golang.org/x/tools/go/packages/doc.go b/vendor/golang.org/x/tools/go/packages/doc.go
new file mode 100644
index 0000000000..3799f8ed8b
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/packages/doc.go
@@ -0,0 +1,222 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+/*
+Package packages loads Go packages for inspection and analysis.
+
+The Load function takes as input a list of patterns and return a list of Package
+structs describing individual packages matched by those patterns.
+The LoadMode controls the amount of detail in the loaded packages.
+
+Load passes most patterns directly to the underlying build tool,
+but all patterns with the prefix "query=", where query is a
+non-empty string of letters from [a-z], are reserved and may be
+interpreted as query operators.
+
+Two query operators are currently supported: "file" and "pattern".
+
+The query "file=path/to/file.go" matches the package or packages enclosing
+the Go source file path/to/file.go.  For example "file=~/go/src/fmt/print.go"
+might return the packages "fmt" and "fmt [fmt.test]".
+
+The query "pattern=string" causes "string" to be passed directly to
+the underlying build tool. In most cases this is unnecessary,
+but an application can use Load("pattern=" + x) as an escaping mechanism
+to ensure that x is not interpreted as a query operator if it contains '='.
+
+All other query operators are reserved for future use and currently
+cause Load to report an error.
+
+The Package struct provides basic information about the package, including
+
+  - ID, a unique identifier for the package in the returned set;
+  - GoFiles, the names of the package's Go source files;
+  - Imports, a map from source import strings to the Packages they name;
+  - Types, the type information for the package's exported symbols;
+  - Syntax, the parsed syntax trees for the package's source code; and
+  - TypeInfo, the result of a complete type-check of the package syntax trees.
+
+(See the documentation for type Package for the complete list of fields
+and more detailed descriptions.)
+
+For example,
+
+	Load(nil, "bytes", "unicode...")
+
+returns four Package structs describing the standard library packages
+bytes, unicode, unicode/utf16, and unicode/utf8. Note that one pattern
+can match multiple packages and that a package might be matched by
+multiple patterns: in general it is not possible to determine which
+packages correspond to which patterns.
+
+Note that the list returned by Load contains only the packages matched
+by the patterns. Their dependencies can be found by walking the import
+graph using the Imports fields.
+
+The Load function can be configured by passing a pointer to a Config as
+the first argument. A nil Config is equivalent to the zero Config, which
+causes Load to run in LoadFiles mode, collecting minimal information.
+See the documentation for type Config for details.
+
+As noted earlier, the Config.Mode controls the amount of detail
+reported about the loaded packages, with each mode returning all the data of the
+previous mode with some extra added. See the documentation for type LoadMode
+for details.
+
+Most tools should pass their command-line arguments (after any flags)
+uninterpreted to the loader, so that the loader can interpret them
+according to the conventions of the underlying build system.
+See the Example function for typical usage.
+
+*/
+package packages // import "golang.org/x/tools/go/packages"
+
+/*
+
+Motivation and design considerations
+
+The new package's design solves problems addressed by two existing
+packages: go/build, which locates and describes packages, and
+golang.org/x/tools/go/loader, which loads, parses and type-checks them.
+The go/build.Package structure encodes too much of the 'go build' way
+of organizing projects, leaving us in need of a data type that describes a
+package of Go source code independent of the underlying build system.
+We wanted something that works equally well with go build and vgo, and
+also other build systems such as Bazel and Blaze, making it possible to
+construct analysis tools that work in all these environments.
+Tools such as errcheck and staticcheck were essentially unavailable to
+the Go community at Google, and some of Google's internal tools for Go
+are unavailable externally.
+This new package provides a uniform way to obtain package metadata by
+querying each of these build systems, optionally supporting their
+preferred command-line notations for packages, so that tools integrate
+neatly with users' build environments. The Metadata query function
+executes an external query tool appropriate to the current workspace.
+
+Loading packages always returns the complete import graph "all the way down",
+even if all you want is information about a single package, because the query
+mechanisms of all the build systems we currently support ({go,vgo} list, and
+blaze/bazel aspect-based query) cannot provide detailed information
+about one package without visiting all its dependencies too, so there is
+no additional asymptotic cost to providing transitive information.
+(This property might not be true of a hypothetical 5th build system.)
+
+In calls to TypeCheck, all initial packages, and any package that
+transitively depends on one of them, must be loaded from source.
+Consider A->B->C->D->E: if A,C are initial, A,B,C must be loaded from
+source; D may be loaded from export data, and E may not be loaded at all
+(though it's possible that D's export data mentions it, so a
+types.Package may be created for it and exposed.)
+
+The old loader had a feature to suppress type-checking of function
+bodies on a per-package basis, primarily intended to reduce the work of
+obtaining type information for imported packages. Now that imports are
+satisfied by export data, the optimization no longer seems necessary.
+
+Despite some early attempts, the old loader did not exploit export data,
+instead always using the equivalent of WholeProgram mode. This was due
+to the complexity of mixing source and export data packages (now
+resolved by the upward traversal mentioned above), and because export data
+files were nearly always missing or stale. Now that 'go build' supports
+caching, all the underlying build systems can guarantee to produce
+export data in a reasonable (amortized) time.
+
+Test "main" packages synthesized by the build system are now reported as
+first-class packages, avoiding the need for clients (such as go/ssa) to
+reinvent this generation logic.
+
+One way in which go/packages is simpler than the old loader is in its
+treatment of in-package tests. In-package tests are packages that
+consist of all the files of the library under test, plus the test files.
+The old loader constructed in-package tests by a two-phase process of
+mutation called "augmentation": first it would construct and type check
+all the ordinary library packages and type-check the packages that
+depend on them; then it would add more (test) files to the package and
+type-check again. This two-phase approach had four major problems:
+1) in processing the tests, the loader modified the library package,
+   leaving no way for a client application to see both the test
+   package and the library package; one would mutate into the other.
+2) because test files can declare additional methods on types defined in
+   the library portion of the package, the dispatch of method calls in
+   the library portion was affected by the presence of the test files.
+   This should have been a clue that the packages were logically
+   different.
+3) this model of "augmentation" assumed at most one in-package test
+   per library package, which is true of projects using 'go build',
+   but not other build systems.
+4) because of the two-phase nature of test processing, all packages that
+   import the library package had to be processed before augmentation,
+   forcing a "one-shot" API and preventing the client from calling Load
+   in several times in sequence as is now possible in WholeProgram mode.
+   (TypeCheck mode has a similar one-shot restriction for a different reason.)
+
+Early drafts of this package supported "multi-shot" operation.
+Although it allowed clients to make a sequence of calls (or concurrent
+calls) to Load, building up the graph of Packages incrementally,
+it was of marginal value: it complicated the API
+(since it allowed some options to vary across calls but not others),
+it complicated the implementation,
+it cannot be made to work in Types mode, as explained above,
+and it was less efficient than making one combined call (when this is possible).
+Among the clients we have inspected, none made multiple calls to load
+but could not be easily and satisfactorily modified to make only a single call.
+However, applications changes may be required.
+For example, the ssadump command loads the user-specified packages
+and in addition the runtime package.  It is tempting to simply append
+"runtime" to the user-provided list, but that does not work if the user
+specified an ad-hoc package such as [a.go b.go].
+Instead, ssadump no longer requests the runtime package,
+but seeks it among the dependencies of the user-specified packages,
+and emits an error if it is not found.
+
+Overlays: The Overlay field in the Config allows providing alternate contents
+for Go source files, by providing a mapping from file path to contents.
+go/packages will pull in new imports added in overlay files when go/packages
+is run in LoadImports mode or greater.
+Overlay support for the go list driver isn't complete yet: if the file doesn't
+exist on disk, it will only be recognized in an overlay if it is a non-test file
+and the package would be reported even without the overlay.
+
+Questions & Tasks
+
+- Add GOARCH/GOOS?
+  They are not portable concepts, but could be made portable.
+  Our goal has been to allow users to express themselves using the conventions
+  of the underlying build system: if the build system honors GOARCH
+  during a build and during a metadata query, then so should
+  applications built atop that query mechanism.
+  Conversely, if the target architecture of the build is determined by
+  command-line flags, the application can pass the relevant
+  flags through to the build system using a command such as:
+    myapp -query_flag="--cpu=amd64" -query_flag="--os=darwin"
+  However, this approach is low-level, unwieldy, and non-portable.
+  GOOS and GOARCH seem important enough to warrant a dedicated option.
+
+- How should we handle partial failures such as a mixture of good and
+  malformed patterns, existing and non-existent packages, successful and
+  failed builds, import failures, import cycles, and so on, in a call to
+  Load?
+
+- Support bazel, blaze, and go1.10 list, not just go1.11 list.
+
+- Handle (and test) various partial success cases, e.g.
+  a mixture of good packages and:
+  invalid patterns
+  nonexistent packages
+  empty packages
+  packages with malformed package or import declarations
+  unreadable files
+  import cycles
+  other parse errors
+  type errors
+  Make sure we record errors at the correct place in the graph.
+
+- Missing packages among initial arguments are not reported.
+  Return bogus packages for them, like golist does.
+
+- "undeclared name" errors (for example) are reported out of source file
+  order. I suspect this is due to the breadth-first resolution now used
+  by go/types. Is that a bug? Discuss with gri.
+
+*/
diff --git a/vendor/golang.org/x/tools/go/packages/external.go b/vendor/golang.org/x/tools/go/packages/external.go
new file mode 100644
index 0000000000..b696b68709
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/packages/external.go
@@ -0,0 +1,94 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This file enables an external tool to intercept package requests.
+// If the tool is present then its results are used in preference to
+// the go list command.
+
+package packages
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"os/exec"
+	"strings"
+)
+
+// The Driver Protocol
+//
+// The driver, given the inputs to a call to Load, returns metadata about the packages specified.
+// This allows for different build systems to support go/packages by telling go/packages how the
+// packages' source is organized.
+// The driver is a binary, either specified by the GOPACKAGESDRIVER environment variable or in
+// the path as gopackagesdriver. It's given the inputs to load in its argv. See the package
+// documentation in doc.go for the full description of the patterns that need to be supported.
+// A driver receives as a JSON-serialized driverRequest struct in standard input and will
+// produce a JSON-serialized driverResponse (see definition in packages.go) in its standard output.
+
+// driverRequest is used to provide the portion of Load's Config that is needed by a driver.
+type driverRequest struct {
+	Mode LoadMode `json:"mode"`
+	// Env specifies the environment the underlying build system should be run in.
+	Env []string `json:"env"`
+	// BuildFlags are flags that should be passed to the underlying build system.
+	BuildFlags []string `json:"build_flags"`
+	// Tests specifies whether the patterns should also return test packages.
+	Tests bool `json:"tests"`
+	// Overlay maps file paths (relative to the driver's working directory) to the byte contents
+	// of overlay files.
+	Overlay map[string][]byte `json:"overlay"`
+}
+
+// findExternalDriver returns the file path of a tool that supplies
+// the build system package structure, or "" if not found."
+// If GOPACKAGESDRIVER is set in the environment findExternalTool returns its
+// value, otherwise it searches for a binary named gopackagesdriver on the PATH.
+func findExternalDriver(cfg *Config) driver {
+	const toolPrefix = "GOPACKAGESDRIVER="
+	tool := ""
+	for _, env := range cfg.Env {
+		if val := strings.TrimPrefix(env, toolPrefix); val != env {
+			tool = val
+		}
+	}
+	if tool != "" && tool == "off" {
+		return nil
+	}
+	if tool == "" {
+		var err error
+		tool, err = exec.LookPath("gopackagesdriver")
+		if err != nil {
+			return nil
+		}
+	}
+	return func(cfg *Config, words ...string) (*driverResponse, error) {
+		req, err := json.Marshal(driverRequest{
+			Mode:       cfg.Mode,
+			Env:        cfg.Env,
+			BuildFlags: cfg.BuildFlags,
+			Tests:      cfg.Tests,
+			Overlay:    cfg.Overlay,
+		})
+		if err != nil {
+			return nil, fmt.Errorf("failed to encode message to driver tool: %v", err)
+		}
+
+		buf := new(bytes.Buffer)
+		cmd := exec.CommandContext(cfg.Context, tool, words...)
+		cmd.Dir = cfg.Dir
+		cmd.Env = cfg.Env
+		cmd.Stdin = bytes.NewReader(req)
+		cmd.Stdout = buf
+		cmd.Stderr = new(bytes.Buffer)
+		if err := cmd.Run(); err != nil {
+			return nil, fmt.Errorf("%v: %v: %s", tool, err, cmd.Stderr)
+		}
+		var response driverResponse
+		if err := json.Unmarshal(buf.Bytes(), &response); err != nil {
+			return nil, err
+		}
+		return &response, nil
+	}
+}
diff --git a/vendor/golang.org/x/tools/go/packages/golist.go b/vendor/golang.org/x/tools/go/packages/golist.go
new file mode 100644
index 0000000000..970e8ca8b0
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/packages/golist.go
@@ -0,0 +1,1000 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package packages
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"go/types"
+	"io/ioutil"
+	"log"
+	"os"
+	"os/exec"
+	"path"
+	"path/filepath"
+	"reflect"
+	"regexp"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"golang.org/x/tools/go/internal/packagesdriver"
+	"golang.org/x/tools/internal/gopathwalk"
+	"golang.org/x/tools/internal/semver"
+)
+
+// debug controls verbose logging.
+var debug, _ = strconv.ParseBool(os.Getenv("GOPACKAGESDEBUG"))
+
+// A goTooOldError reports that the go command
+// found by exec.LookPath is too old to use the new go list behavior.
+type goTooOldError struct {
+	error
+}
+
+// responseDeduper wraps a driverResponse, deduplicating its contents.
+type responseDeduper struct {
+	seenRoots    map[string]bool
+	seenPackages map[string]*Package
+	dr           *driverResponse
+}
+
+// init fills in r with a driverResponse.
+func (r *responseDeduper) init(dr *driverResponse) {
+	r.dr = dr
+	r.seenRoots = map[string]bool{}
+	r.seenPackages = map[string]*Package{}
+	for _, pkg := range dr.Packages {
+		r.seenPackages[pkg.ID] = pkg
+	}
+	for _, root := range dr.Roots {
+		r.seenRoots[root] = true
+	}
+}
+
+func (r *responseDeduper) addPackage(p *Package) {
+	if r.seenPackages[p.ID] != nil {
+		return
+	}
+	r.seenPackages[p.ID] = p
+	r.dr.Packages = append(r.dr.Packages, p)
+}
+
+func (r *responseDeduper) addRoot(id string) {
+	if r.seenRoots[id] {
+		return
+	}
+	r.seenRoots[id] = true
+	r.dr.Roots = append(r.dr.Roots, id)
+}
+
+// goInfo contains global information from the go tool.
+type goInfo struct {
+	rootDirs map[string]string
+	env      goEnv
+}
+
+type goEnv struct {
+	modulesOn bool
+}
+
+func determineEnv(cfg *Config) goEnv {
+	buf, err := invokeGo(cfg, "env", "GOMOD")
+	if err != nil {
+		return goEnv{}
+	}
+	gomod := bytes.TrimSpace(buf.Bytes())
+
+	env := goEnv{}
+	env.modulesOn = len(gomod) > 0
+	return env
+}
+
+// goListDriver uses the go list command to interpret the patterns and produce
+// the build system package structure.
+// See driver for more details.
+func goListDriver(cfg *Config, patterns ...string) (*driverResponse, error) {
+	var sizes types.Sizes
+	var sizeserr error
+	var sizeswg sync.WaitGroup
+	if cfg.Mode&NeedTypesSizes != 0 || cfg.Mode&NeedTypes != 0 {
+		sizeswg.Add(1)
+		go func() {
+			sizes, sizeserr = getSizes(cfg)
+			sizeswg.Done()
+		}()
+	}
+
+	// start fetching rootDirs
+	var info goInfo
+	var rootDirsReady, envReady = make(chan struct{}), make(chan struct{})
+	go func() {
+		info.rootDirs = determineRootDirs(cfg)
+		close(rootDirsReady)
+	}()
+	go func() {
+		info.env = determineEnv(cfg)
+		close(envReady)
+	}()
+	getGoInfo := func() *goInfo {
+		<-rootDirsReady
+		<-envReady
+		return &info
+	}
+
+	// always pass getGoInfo to golistDriver
+	golistDriver := func(cfg *Config, patterns ...string) (*driverResponse, error) {
+		return golistDriver(cfg, getGoInfo, patterns...)
+	}
+
+	// Determine files requested in contains patterns
+	var containFiles []string
+	var packagesNamed []string
+	restPatterns := make([]string, 0, len(patterns))
+	// Extract file= and other [querytype]= patterns. Report an error if querytype
+	// doesn't exist.
+extractQueries:
+	for _, pattern := range patterns {
+		eqidx := strings.Index(pattern, "=")
+		if eqidx < 0 {
+			restPatterns = append(restPatterns, pattern)
+		} else {
+			query, value := pattern[:eqidx], pattern[eqidx+len("="):]
+			switch query {
+			case "file":
+				containFiles = append(containFiles, value)
+			case "pattern":
+				restPatterns = append(restPatterns, value)
+			case "iamashamedtousethedisabledqueryname":
+				packagesNamed = append(packagesNamed, value)
+			case "": // not a reserved query
+				restPatterns = append(restPatterns, pattern)
+			default:
+				for _, rune := range query {
+					if rune < 'a' || rune > 'z' { // not a reserved query
+						restPatterns = append(restPatterns, pattern)
+						continue extractQueries
+					}
+				}
+				// Reject all other patterns containing "="
+				return nil, fmt.Errorf("invalid query type %q in query pattern %q", query, pattern)
+			}
+		}
+	}
+
+	response := &responseDeduper{}
+	var err error
+
+	// See if we have any patterns to pass through to go list. Zero initial
+	// patterns also requires a go list call, since it's the equivalent of
+	// ".".
+	if len(restPatterns) > 0 || len(patterns) == 0 {
+		dr, err := golistDriver(cfg, restPatterns...)
+		if err != nil {
+			return nil, err
+		}
+		response.init(dr)
+	} else {
+		response.init(&driverResponse{})
+	}
+
+	sizeswg.Wait()
+	if sizeserr != nil {
+		return nil, sizeserr
+	}
+	// types.SizesFor always returns nil or a *types.StdSizes
+	response.dr.Sizes, _ = sizes.(*types.StdSizes)
+
+	var containsCandidates []string
+
+	if len(containFiles) != 0 {
+		if err := runContainsQueries(cfg, golistDriver, response, containFiles, getGoInfo); err != nil {
+			return nil, err
+		}
+	}
+
+	if len(packagesNamed) != 0 {
+		if err := runNamedQueries(cfg, golistDriver, response, packagesNamed); err != nil {
+			return nil, err
+		}
+	}
+
+	modifiedPkgs, needPkgs, err := processGolistOverlay(cfg, response, getGoInfo)
+	if err != nil {
+		return nil, err
+	}
+	if len(containFiles) > 0 {
+		containsCandidates = append(containsCandidates, modifiedPkgs...)
+		containsCandidates = append(containsCandidates, needPkgs...)
+	}
+	if err := addNeededOverlayPackages(cfg, golistDriver, response, needPkgs, getGoInfo); err != nil {
+		return nil, err
+	}
+	// Check candidate packages for containFiles.
+	if len(containFiles) > 0 {
+		for _, id := range containsCandidates {
+			pkg, ok := response.seenPackages[id]
+			if !ok {
+				response.addPackage(&Package{
+					ID: id,
+					Errors: []Error{
+						{
+							Kind: ListError,
+							Msg:  fmt.Sprintf("package %s expected but not seen", id),
+						},
+					},
+				})
+				continue
+			}
+			for _, f := range containFiles {
+				for _, g := range pkg.GoFiles {
+					if sameFile(f, g) {
+						response.addRoot(id)
+					}
+				}
+			}
+		}
+	}
+
+	return response.dr, nil
+}
+
+func addNeededOverlayPackages(cfg *Config, driver driver, response *responseDeduper, pkgs []string, getGoInfo func() *goInfo) error {
+	if len(pkgs) == 0 {
+		return nil
+	}
+	drivercfg := *cfg
+	if getGoInfo().env.modulesOn {
+		drivercfg.BuildFlags = append(drivercfg.BuildFlags, "-mod=readonly")
+	}
+	dr, err := driver(&drivercfg, pkgs...)
+
+	if err != nil {
+		return err
+	}
+	for _, pkg := range dr.Packages {
+		response.addPackage(pkg)
+	}
+	_, needPkgs, err := processGolistOverlay(cfg, response, getGoInfo)
+	if err != nil {
+		return err
+	}
+	if err := addNeededOverlayPackages(cfg, driver, response, needPkgs, getGoInfo); err != nil {
+		return err
+	}
+	return nil
+}
+
+func runContainsQueries(cfg *Config, driver driver, response *responseDeduper, queries []string, goInfo func() *goInfo) error {
+	for _, query := range queries {
+		// TODO(matloob): Do only one query per directory.
+		fdir := filepath.Dir(query)
+		// Pass absolute path of directory to go list so that it knows to treat it as a directory,
+		// not a package path.
+		pattern, err := filepath.Abs(fdir)
+		if err != nil {
+			return fmt.Errorf("could not determine absolute path of file= query path %q: %v", query, err)
+		}
+		dirResponse, err := driver(cfg, pattern)
+		if err != nil || (len(dirResponse.Packages) == 1 && len(dirResponse.Packages[0].Errors) == 1) {
+			// There was an error loading the package. Try to load the file as an ad-hoc package.
+			// Usually the error will appear in a returned package, but may not if we're in modules mode
+			// and the ad-hoc is located outside a module.
+			var queryErr error
+			dirResponse, queryErr = driver(cfg, query)
+			if queryErr != nil {
+				// Return the original error if the attempt to fall back failed.
+				return err
+			}
+			// Special case to handle issue #33482:
+			// If this is a file= query for ad-hoc packages where the file only exists on an overlay,
+			// and exists outside of a module, add the file in for the package.
+			if len(dirResponse.Packages) == 1 && len(dirResponse.Packages) == 1 &&
+				dirResponse.Packages[0].ID == "command-line-arguments" && len(dirResponse.Packages[0].GoFiles) == 0 {
+				filename := filepath.Join(pattern, filepath.Base(query)) // avoid recomputing abspath
+				// TODO(matloob): check if the file is outside of a root dir?
+				for path := range cfg.Overlay {
+					if path == filename {
+						dirResponse.Packages[0].Errors = nil
+						dirResponse.Packages[0].GoFiles = []string{path}
+						dirResponse.Packages[0].CompiledGoFiles = []string{path}
+					}
+				}
+			}
+		}
+		isRoot := make(map[string]bool, len(dirResponse.Roots))
+		for _, root := range dirResponse.Roots {
+			isRoot[root] = true
+		}
+		for _, pkg := range dirResponse.Packages {
+			// Add any new packages to the main set
+			// We don't bother to filter packages that will be dropped by the changes of roots,
+			// that will happen anyway during graph construction outside this function.
+			// Over-reporting packages is not a problem.
+			response.addPackage(pkg)
+			// if the package was not a root one, it cannot have the file
+			if !isRoot[pkg.ID] {
+				continue
+			}
+			for _, pkgFile := range pkg.GoFiles {
+				if filepath.Base(query) == filepath.Base(pkgFile) {
+					response.addRoot(pkg.ID)
+					break
+				}
+			}
+		}
+	}
+	return nil
+}
+
+// modCacheRegexp splits a path in a module cache into module, module version, and package.
+var modCacheRegexp = regexp.MustCompile(`(.*)@([^/\\]*)(.*)`)
+
+func runNamedQueries(cfg *Config, driver driver, response *responseDeduper, queries []string) error {
+	// calling `go env` isn't free; bail out if there's nothing to do.
+	if len(queries) == 0 {
+		return nil
+	}
+	// Determine which directories are relevant to scan.
+	roots, modRoot, err := roots(cfg)
+	if err != nil {
+		return err
+	}
+
+	// Scan the selected directories. Simple matches, from GOPATH/GOROOT
+	// or the local module, can simply be "go list"ed. Matches from the
+	// module cache need special treatment.
+	var matchesMu sync.Mutex
+	var simpleMatches, modCacheMatches []string
+	add := func(root gopathwalk.Root, dir string) {
+		// Walk calls this concurrently; protect the result slices.
+		matchesMu.Lock()
+		defer matchesMu.Unlock()
+
+		path := dir
+		if dir != root.Path {
+			path = dir[len(root.Path)+1:]
+		}
+		if pathMatchesQueries(path, queries) {
+			switch root.Type {
+			case gopathwalk.RootModuleCache:
+				modCacheMatches = append(modCacheMatches, path)
+			case gopathwalk.RootCurrentModule:
+				// We'd need to read go.mod to find the full
+				// import path. Relative's easier.
+				rel, err := filepath.Rel(cfg.Dir, dir)
+				if err != nil {
+					// This ought to be impossible, since
+					// we found dir in the current module.
+					panic(err)
+				}
+				simpleMatches = append(simpleMatches, "./"+rel)
+			case gopathwalk.RootGOPATH, gopathwalk.RootGOROOT:
+				simpleMatches = append(simpleMatches, path)
+			}
+		}
+	}
+
+	startWalk := time.Now()
+	gopathwalk.Walk(roots, add, gopathwalk.Options{ModulesEnabled: modRoot != "", Debug: debug})
+	cfg.Logf("%v for walk", time.Since(startWalk))
+
+	// Weird special case: the top-level package in a module will be in
+	// whatever directory the user checked the repository out into. It's
+	// more reasonable for that to not match the package name. So, if there
+	// are any Go files in the mod root, query it just to be safe.
+	if modRoot != "" {
+		rel, err := filepath.Rel(cfg.Dir, modRoot)
+		if err != nil {
+			panic(err) // See above.
+		}
+
+		files, err := ioutil.ReadDir(modRoot)
+		for _, f := range files {
+			if strings.HasSuffix(f.Name(), ".go") {
+				simpleMatches = append(simpleMatches, rel)
+				break
+			}
+		}
+	}
+
+	addResponse := func(r *driverResponse) {
+		for _, pkg := range r.Packages {
+			response.addPackage(pkg)
+			for _, name := range queries {
+				if pkg.Name == name {
+					response.addRoot(pkg.ID)
+					break
+				}
+			}
+		}
+	}
+
+	if len(simpleMatches) != 0 {
+		resp, err := driver(cfg, simpleMatches...)
+		if err != nil {
+			return err
+		}
+		addResponse(resp)
+	}
+
+	// Module cache matches are tricky. We want to avoid downloading new
+	// versions of things, so we need to use the ones present in the cache.
+	// go list doesn't accept version specifiers, so we have to write out a
+	// temporary module, and do the list in that module.
+	if len(modCacheMatches) != 0 {
+		// Collect all the matches, deduplicating by major version
+		// and preferring the newest.
+		type modInfo struct {
+			mod   string
+			major string
+		}
+		mods := make(map[modInfo]string)
+		var imports []string
+		for _, modPath := range modCacheMatches {
+			matches := modCacheRegexp.FindStringSubmatch(modPath)
+			mod, ver := filepath.ToSlash(matches[1]), matches[2]
+			importPath := filepath.ToSlash(filepath.Join(matches[1], matches[3]))
+
+			major := semver.Major(ver)
+			if prevVer, ok := mods[modInfo{mod, major}]; !ok || semver.Compare(ver, prevVer) > 0 {
+				mods[modInfo{mod, major}] = ver
+			}
+
+			imports = append(imports, importPath)
+		}
+
+		// Build the temporary module.
+		var gomod bytes.Buffer
+		gomod.WriteString("module modquery\nrequire (\n")
+		for mod, version := range mods {
+			gomod.WriteString("\t" + mod.mod + " " + version + "\n")
+		}
+		gomod.WriteString(")\n")
+
+		tmpCfg := *cfg
+
+		// We're only trying to look at stuff in the module cache, so
+		// disable the network. This should speed things up, and has
+		// prevented errors in at least one case, #28518.
+		tmpCfg.Env = append(append([]string{"GOPROXY=off"}, cfg.Env...))
+
+		var err error
+		tmpCfg.Dir, err = ioutil.TempDir("", "gopackages-modquery")
+		if err != nil {
+			return err
+		}
+		defer os.RemoveAll(tmpCfg.Dir)
+
+		if err := ioutil.WriteFile(filepath.Join(tmpCfg.Dir, "go.mod"), gomod.Bytes(), 0777); err != nil {
+			return fmt.Errorf("writing go.mod for module cache query: %v", err)
+		}
+
+		// Run the query, using the import paths calculated from the matches above.
+		resp, err := driver(&tmpCfg, imports...)
+		if err != nil {
+			return fmt.Errorf("querying module cache matches: %v", err)
+		}
+		addResponse(resp)
+	}
+
+	return nil
+}
+
+func getSizes(cfg *Config) (types.Sizes, error) {
+	return packagesdriver.GetSizesGolist(cfg.Context, cfg.BuildFlags, cfg.Env, cfg.Dir, usesExportData(cfg))
+}
+
+// roots selects the appropriate paths to walk based on the passed-in configuration,
+// particularly the environment and the presence of a go.mod in cfg.Dir's parents.
+func roots(cfg *Config) ([]gopathwalk.Root, string, error) {
+	stdout, err := invokeGo(cfg, "env", "GOROOT", "GOPATH", "GOMOD")
+	if err != nil {
+		return nil, "", err
+	}
+
+	fields := strings.Split(stdout.String(), "\n")
+	if len(fields) != 4 || len(fields[3]) != 0 {
+		return nil, "", fmt.Errorf("go env returned unexpected output: %q", stdout.String())
+	}
+	goroot, gopath, gomod := fields[0], filepath.SplitList(fields[1]), fields[2]
+	var modDir string
+	if gomod != "" {
+		modDir = filepath.Dir(gomod)
+	}
+
+	var roots []gopathwalk.Root
+	// Always add GOROOT.
+	roots = append(roots, gopathwalk.Root{filepath.Join(goroot, "/src"), gopathwalk.RootGOROOT})
+	// If modules are enabled, scan the module dir.
+	if modDir != "" {
+		roots = append(roots, gopathwalk.Root{modDir, gopathwalk.RootCurrentModule})
+	}
+	// Add either GOPATH/src or GOPATH/pkg/mod, depending on module mode.
+	for _, p := range gopath {
+		if modDir != "" {
+			roots = append(roots, gopathwalk.Root{filepath.Join(p, "/pkg/mod"), gopathwalk.RootModuleCache})
+		} else {
+			roots = append(roots, gopathwalk.Root{filepath.Join(p, "/src"), gopathwalk.RootGOPATH})
+		}
+	}
+
+	return roots, modDir, nil
+}
+
+// These functions were copied from goimports. See further documentation there.
+
+// pathMatchesQueries is adapted from pkgIsCandidate.
+// TODO: is it reasonable to do Contains here, rather than an exact match on a path component?
+func pathMatchesQueries(path string, queries []string) bool {
+	lastTwo := lastTwoComponents(path)
+	for _, query := range queries {
+		if strings.Contains(lastTwo, query) {
+			return true
+		}
+		if hasHyphenOrUpperASCII(lastTwo) && !hasHyphenOrUpperASCII(query) {
+			lastTwo = lowerASCIIAndRemoveHyphen(lastTwo)
+			if strings.Contains(lastTwo, query) {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+// lastTwoComponents returns at most the last two path components
+// of v, using either / or \ as the path separator.
+func lastTwoComponents(v string) string {
+	nslash := 0
+	for i := len(v) - 1; i >= 0; i-- {
+		if v[i] == '/' || v[i] == '\\' {
+			nslash++
+			if nslash == 2 {
+				return v[i:]
+			}
+		}
+	}
+	return v
+}
+
+func hasHyphenOrUpperASCII(s string) bool {
+	for i := 0; i < len(s); i++ {
+		b := s[i]
+		if b == '-' || ('A' <= b && b <= 'Z') {
+			return true
+		}
+	}
+	return false
+}
+
+func lowerASCIIAndRemoveHyphen(s string) (ret string) {
+	buf := make([]byte, 0, len(s))
+	for i := 0; i < len(s); i++ {
+		b := s[i]
+		switch {
+		case b == '-':
+			continue
+		case 'A' <= b && b <= 'Z':
+			buf = append(buf, b+('a'-'A'))
+		default:
+			buf = append(buf, b)
+		}
+	}
+	return string(buf)
+}
+
+// Fields must match go list;
+// see $GOROOT/src/cmd/go/internal/load/pkg.go.
+type jsonPackage struct {
+	ImportPath      string
+	Dir             string
+	Name            string
+	Export          string
+	GoFiles         []string
+	CompiledGoFiles []string
+	CFiles          []string
+	CgoFiles        []string
+	CXXFiles        []string
+	MFiles          []string
+	HFiles          []string
+	FFiles          []string
+	SFiles          []string
+	SwigFiles       []string
+	SwigCXXFiles    []string
+	SysoFiles       []string
+	Imports         []string
+	ImportMap       map[string]string
+	Deps            []string
+	TestGoFiles     []string
+	TestImports     []string
+	XTestGoFiles    []string
+	XTestImports    []string
+	ForTest         string // q in a "p [q.test]" package, else ""
+	DepOnly         bool
+
+	Error *jsonPackageError
+}
+
+type jsonPackageError struct {
+	ImportStack []string
+	Pos         string
+	Err         string
+}
+
+func otherFiles(p *jsonPackage) [][]string {
+	return [][]string{p.CFiles, p.CXXFiles, p.MFiles, p.HFiles, p.FFiles, p.SFiles, p.SwigFiles, p.SwigCXXFiles, p.SysoFiles}
+}
+
+// golistDriver uses the "go list" command to expand the pattern
+// words and return metadata for the specified packages. dir may be
+// "" and env may be nil, as per os/exec.Command.
+func golistDriver(cfg *Config, rootsDirs func() *goInfo, words ...string) (*driverResponse, error) {
+	// go list uses the following identifiers in ImportPath and Imports:
+	//
+	// 	"p"			-- importable package or main (command)
+	//      "q.test"		-- q's test executable
+	// 	"p [q.test]"		-- variant of p as built for q's test executable
+	//	"q_test [q.test]"	-- q's external test package
+	//
+	// The packages p that are built differently for a test q.test
+	// are q itself, plus any helpers used by the external test q_test,
+	// typically including "testing" and all its dependencies.
+
+	// Run "go list" for complete
+	// information on the specified packages.
+	buf, err := invokeGo(cfg, golistargs(cfg, words)...)
+	if err != nil {
+		return nil, err
+	}
+	seen := make(map[string]*jsonPackage)
+	// Decode the JSON and convert it to Package form.
+	var response driverResponse
+	for dec := json.NewDecoder(buf); dec.More(); {
+		p := new(jsonPackage)
+		if err := dec.Decode(p); err != nil {
+			return nil, fmt.Errorf("JSON decoding failed: %v", err)
+		}
+
+		if p.ImportPath == "" {
+			// The documentation for go list says that “[e]rroneous packages will have
+			// a non-empty ImportPath”. If for some reason it comes back empty, we
+			// prefer to error out rather than silently discarding data or handing
+			// back a package without any way to refer to it.
+			if p.Error != nil {
+				return nil, Error{
+					Pos: p.Error.Pos,
+					Msg: p.Error.Err,
+				}
+			}
+			return nil, fmt.Errorf("package missing import path: %+v", p)
+		}
+
+		// Work around https://golang.org/issue/33157:
+		// go list -e, when given an absolute path, will find the package contained at
+		// that directory. But when no package exists there, it will return a fake package
+		// with an error and the ImportPath set to the absolute path provided to go list.
+		// Try toto convert that absolute path to what its package path would be if it's
+		// contained in a known module or GOPATH entry. This will allow the package to be
+		// properly "reclaimed" when overlays are processed.
+		if filepath.IsAbs(p.ImportPath) && p.Error != nil {
+			pkgPath, ok := getPkgPath(p.ImportPath, rootsDirs)
+			if ok {
+				p.ImportPath = pkgPath
+			}
+		}
+
+		if old, found := seen[p.ImportPath]; found {
+			if !reflect.DeepEqual(p, old) {
+				return nil, fmt.Errorf("internal error: go list gives conflicting information for package %v", p.ImportPath)
+			}
+			// skip the duplicate
+			continue
+		}
+		seen[p.ImportPath] = p
+
+		pkg := &Package{
+			Name:            p.Name,
+			ID:              p.ImportPath,
+			GoFiles:         absJoin(p.Dir, p.GoFiles, p.CgoFiles),
+			CompiledGoFiles: absJoin(p.Dir, p.CompiledGoFiles),
+			OtherFiles:      absJoin(p.Dir, otherFiles(p)...),
+		}
+
+		// Work around https://golang.org/issue/28749:
+		// cmd/go puts assembly, C, and C++ files in CompiledGoFiles.
+		// Filter out any elements of CompiledGoFiles that are also in OtherFiles.
+		// We have to keep this workaround in place until go1.12 is a distant memory.
+		if len(pkg.OtherFiles) > 0 {
+			other := make(map[string]bool, len(pkg.OtherFiles))
+			for _, f := range pkg.OtherFiles {
+				other[f] = true
+			}
+
+			out := pkg.CompiledGoFiles[:0]
+			for _, f := range pkg.CompiledGoFiles {
+				if other[f] {
+					continue
+				}
+				out = append(out, f)
+			}
+			pkg.CompiledGoFiles = out
+		}
+
+		// Extract the PkgPath from the package's ID.
+		if i := strings.IndexByte(pkg.ID, ' '); i >= 0 {
+			pkg.PkgPath = pkg.ID[:i]
+		} else {
+			pkg.PkgPath = pkg.ID
+		}
+
+		if pkg.PkgPath == "unsafe" {
+			pkg.GoFiles = nil // ignore fake unsafe.go file
+		}
+
+		// Assume go list emits only absolute paths for Dir.
+		if p.Dir != "" && !filepath.IsAbs(p.Dir) {
+			log.Fatalf("internal error: go list returned non-absolute Package.Dir: %s", p.Dir)
+		}
+
+		if p.Export != "" && !filepath.IsAbs(p.Export) {
+			pkg.ExportFile = filepath.Join(p.Dir, p.Export)
+		} else {
+			pkg.ExportFile = p.Export
+		}
+
+		// imports
+		//
+		// Imports contains the IDs of all imported packages.
+		// ImportsMap records (path, ID) only where they differ.
+		ids := make(map[string]bool)
+		for _, id := range p.Imports {
+			ids[id] = true
+		}
+		pkg.Imports = make(map[string]*Package)
+		for path, id := range p.ImportMap {
+			pkg.Imports[path] = &Package{ID: id} // non-identity import
+			delete(ids, id)
+		}
+		for id := range ids {
+			if id == "C" {
+				continue
+			}
+
+			pkg.Imports[id] = &Package{ID: id} // identity import
+		}
+		if !p.DepOnly {
+			response.Roots = append(response.Roots, pkg.ID)
+		}
+
+		// Work around for pre-go.1.11 versions of go list.
+		// TODO(matloob): they should be handled by the fallback.
+		// Can we delete this?
+		if len(pkg.CompiledGoFiles) == 0 {
+			pkg.CompiledGoFiles = pkg.GoFiles
+		}
+
+		if p.Error != nil {
+			pkg.Errors = append(pkg.Errors, Error{
+				Pos: p.Error.Pos,
+				Msg: strings.TrimSpace(p.Error.Err), // Trim to work around golang.org/issue/32363.
+			})
+		}
+
+		response.Packages = append(response.Packages, pkg)
+	}
+
+	return &response, nil
+}
+
+// getPkgPath finds the package path of a directory if it's relative to a root directory.
+func getPkgPath(dir string, goInfo func() *goInfo) (string, bool) {
+	for rdir, rpath := range goInfo().rootDirs {
+		// TODO(matloob): This doesn't properly handle symlinks.
+		r, err := filepath.Rel(rdir, dir)
+		if err != nil {
+			continue
+		}
+		if rpath != "" {
+			// We choose only ore root even though the directory even it can belong in multiple modules
+			// or GOPATH entries. This is okay because we only need to work with absolute dirs when a
+			// file is missing from disk, for instance when gopls calls go/packages in an overlay.
+			// Once the file is saved, gopls, or the next invocation of the tool will get the correct
+			// result straight from golist.
+			// TODO(matloob): Implement module tiebreaking?
+			return path.Join(rpath, filepath.ToSlash(r)), true
+		}
+	}
+	return "", false
+}
+
+// absJoin absolutizes and flattens the lists of files.
+func absJoin(dir string, fileses ...[]string) (res []string) {
+	for _, files := range fileses {
+		for _, file := range files {
+			if !filepath.IsAbs(file) {
+				file = filepath.Join(dir, file)
+			}
+			res = append(res, file)
+		}
+	}
+	return res
+}
+
+func golistargs(cfg *Config, words []string) []string {
+	const findFlags = NeedImports | NeedTypes | NeedSyntax | NeedTypesInfo
+	fullargs := []string{
+		"list", "-e", "-json",
+		fmt.Sprintf("-compiled=%t", cfg.Mode&(NeedCompiledGoFiles|NeedSyntax|NeedTypesInfo|NeedTypesSizes) != 0),
+		fmt.Sprintf("-test=%t", cfg.Tests),
+		fmt.Sprintf("-export=%t", usesExportData(cfg)),
+		fmt.Sprintf("-deps=%t", cfg.Mode&NeedDeps != 0 ||
+			cfg.Mode&NeedTypesInfo != 0), // Dependencies are required to do typechecking on sources, which is required for the TypesInfo.
+		// go list doesn't let you pass -test and -find together,
+		// probably because you'd just get the TestMain.
+		fmt.Sprintf("-find=%t", !cfg.Tests && cfg.Mode&findFlags == 0),
+	}
+	fullargs = append(fullargs, cfg.BuildFlags...)
+	fullargs = append(fullargs, "--")
+	fullargs = append(fullargs, words...)
+	return fullargs
+}
+
+// invokeGo returns the stdout of a go command invocation.
+func invokeGo(cfg *Config, args ...string) (*bytes.Buffer, error) {
+	stdout := new(bytes.Buffer)
+	stderr := new(bytes.Buffer)
+	cmd := exec.CommandContext(cfg.Context, "go", args...)
+	// On darwin the cwd gets resolved to the real path, which breaks anything that
+	// expects the working directory to keep the original path, including the
+	// go command when dealing with modules.
+	// The Go stdlib has a special feature where if the cwd and the PWD are the
+	// same node then it trusts the PWD, so by setting it in the env for the child
+	// process we fix up all the paths returned by the go command.
+	cmd.Env = append(append([]string{}, cfg.Env...), "PWD="+cfg.Dir)
+	cmd.Dir = cfg.Dir
+	cmd.Stdout = stdout
+	cmd.Stderr = stderr
+	defer func(start time.Time) {
+		cfg.Logf("%s for %v, stderr: <<%s>>\n", time.Since(start), cmdDebugStr(cmd, args...), stderr)
+	}(time.Now())
+
+	if err := cmd.Run(); err != nil {
+		// Check for 'go' executable not being found.
+		if ee, ok := err.(*exec.Error); ok && ee.Err == exec.ErrNotFound {
+			return nil, fmt.Errorf("'go list' driver requires 'go', but %s", exec.ErrNotFound)
+		}
+
+		exitErr, ok := err.(*exec.ExitError)
+		if !ok {
+			// Catastrophic error:
+			// - context cancellation
+			return nil, fmt.Errorf("couldn't exec 'go %v': %s %T", args, err, err)
+		}
+
+		// Old go version?
+		if strings.Contains(stderr.String(), "flag provided but not defined") {
+			return nil, goTooOldError{fmt.Errorf("unsupported version of go: %s: %s", exitErr, stderr)}
+		}
+
+		// Related to #24854
+		if len(stderr.String()) > 0 && strings.Contains(stderr.String(), "unexpected directory layout") {
+			return nil, fmt.Errorf("%s", stderr.String())
+		}
+
+		// Is there an error running the C compiler in cgo? This will be reported in the "Error" field
+		// and should be suppressed by go list -e.
+		//
+		// This condition is not perfect yet because the error message can include other error messages than runtime/cgo.
+		if len(stderr.String()) > 0 && strings.HasPrefix(stderr.String(), "# runtime/cgo\n") {
+			return stdout, nil
+		}
+
+		// This error only appears in stderr. See golang.org/cl/166398 for a fix in go list to show
+		// the error in the Err section of stdout in case -e option is provided.
+		// This fix is provided for backwards compatibility.
+		if len(stderr.String()) > 0 && strings.Contains(stderr.String(), "named files must be .go files") {
+			output := fmt.Sprintf(`{"ImportPath": "command-line-arguments","Incomplete": true,"Error": {"Pos": "","Err": %q}}`,
+				strings.Trim(stderr.String(), "\n"))
+			return bytes.NewBufferString(output), nil
+		}
+
+		// Similar to the previous error, but currently lacks a fix in Go.
+		if len(stderr.String()) > 0 && strings.Contains(stderr.String(), "named files must all be in one directory") {
+			output := fmt.Sprintf(`{"ImportPath": "command-line-arguments","Incomplete": true,"Error": {"Pos": "","Err": %q}}`,
+				strings.Trim(stderr.String(), "\n"))
+			return bytes.NewBufferString(output), nil
+		}
+
+		// Backwards compatibility for Go 1.11 because 1.12 and 1.13 put the directory in the ImportPath.
+		// If the package doesn't exist, put the absolute path of the directory into the error message,
+		// as Go 1.13 list does.
+		const noSuchDirectory = "no such directory"
+		if len(stderr.String()) > 0 && strings.Contains(stderr.String(), noSuchDirectory) {
+			errstr := stderr.String()
+			abspath := strings.TrimSpace(errstr[strings.Index(errstr, noSuchDirectory)+len(noSuchDirectory):])
+			output := fmt.Sprintf(`{"ImportPath": %q,"Incomplete": true,"Error": {"Pos": "","Err": %q}}`,
+				abspath, strings.Trim(stderr.String(), "\n"))
+			return bytes.NewBufferString(output), nil
+		}
+
+		// Workaround for #29280: go list -e has incorrect behavior when an ad-hoc package doesn't exist.
+		// Note that the error message we look for in this case is different that the one looked for above.
+		if len(stderr.String()) > 0 && strings.Contains(stderr.String(), "no such file or directory") {
+			output := fmt.Sprintf(`{"ImportPath": "command-line-arguments","Incomplete": true,"Error": {"Pos": "","Err": %q}}`,
+				strings.Trim(stderr.String(), "\n"))
+			return bytes.NewBufferString(output), nil
+		}
+
+		// Workaround for an instance of golang.org/issue/26755: go list -e  will return a non-zero exit
+		// status if there's a dependency on a package that doesn't exist. But it should return
+		// a zero exit status and set an error on that package.
+		if len(stderr.String()) > 0 && strings.Contains(stderr.String(), "no Go files in") {
+			// try to extract package name from string
+			stderrStr := stderr.String()
+			var importPath string
+			colon := strings.Index(stderrStr, ":")
+			if colon > 0 && strings.HasPrefix(stderrStr, "go build ") {
+				importPath = stderrStr[len("go build "):colon]
+			}
+			output := fmt.Sprintf(`{"ImportPath": %q,"Incomplete": true,"Error": {"Pos": "","Err": %q}}`,
+				importPath, strings.Trim(stderrStr, "\n"))
+			return bytes.NewBufferString(output), nil
+		}
+
+		// Export mode entails a build.
+		// If that build fails, errors appear on stderr
+		// (despite the -e flag) and the Export field is blank.
+		// Do not fail in that case.
+		// The same is true if an ad-hoc package given to go list doesn't exist.
+		// TODO(matloob): Remove these once we can depend on go list to exit with a zero status with -e even when
+		// packages don't exist or a build fails.
+		if !usesExportData(cfg) && !containsGoFile(args) {
+			return nil, fmt.Errorf("go %v: %s: %s", args, exitErr, stderr)
+		}
+	}
+
+	// As of writing, go list -export prints some non-fatal compilation
+	// errors to stderr, even with -e set. We would prefer that it put
+	// them in the Package.Error JSON (see https://golang.org/issue/26319).
+	// In the meantime, there's nowhere good to put them, but they can
+	// be useful for debugging. Print them if $GOPACKAGESPRINTGOLISTERRORS
+	// is set.
+	if len(stderr.Bytes()) != 0 && os.Getenv("GOPACKAGESPRINTGOLISTERRORS") != "" {
+		fmt.Fprintf(os.Stderr, "%s stderr: <<%s>>\n", cmdDebugStr(cmd, args...), stderr)
+	}
+
+	// debugging
+	if false {
+		fmt.Fprintf(os.Stderr, "%s stdout: <<%s>>\n", cmdDebugStr(cmd, args...), stdout)
+	}
+
+	return stdout, nil
+}
+
+func containsGoFile(s []string) bool {
+	for _, f := range s {
+		if strings.HasSuffix(f, ".go") {
+			return true
+		}
+	}
+	return false
+}
+
+func cmdDebugStr(cmd *exec.Cmd, args ...string) string {
+	env := make(map[string]string)
+	for _, kv := range cmd.Env {
+		split := strings.Split(kv, "=")
+		k, v := split[0], split[1]
+		env[k] = v
+	}
+	var quotedArgs []string
+	for _, arg := range args {
+		quotedArgs = append(quotedArgs, strconv.Quote(arg))
+	}
+
+	return fmt.Sprintf("GOROOT=%v GOPATH=%v GO111MODULE=%v PWD=%v go %s", env["GOROOT"], env["GOPATH"], env["GO111MODULE"], env["PWD"], strings.Join(quotedArgs, " "))
+}
diff --git a/vendor/golang.org/x/tools/go/packages/golist_overlay.go b/vendor/golang.org/x/tools/go/packages/golist_overlay.go
new file mode 100644
index 0000000000..941b0f47d2
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/packages/golist_overlay.go
@@ -0,0 +1,293 @@
+package packages
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"go/parser"
+	"go/token"
+	"path"
+	"path/filepath"
+	"strconv"
+	"strings"
+)
+
+// processGolistOverlay provides rudimentary support for adding
+// files that don't exist on disk to an overlay. The results can be
+// sometimes incorrect.
+// TODO(matloob): Handle unsupported cases, including the following:
+// - determining the correct package to add given a new import path
+func processGolistOverlay(cfg *Config, response *responseDeduper, rootDirs func() *goInfo) (modifiedPkgs, needPkgs []string, err error) {
+	havePkgs := make(map[string]string) // importPath -> non-test package ID
+	needPkgsSet := make(map[string]bool)
+	modifiedPkgsSet := make(map[string]bool)
+
+	for _, pkg := range response.dr.Packages {
+		// This is an approximation of import path to id. This can be
+		// wrong for tests, vendored packages, and a number of other cases.
+		havePkgs[pkg.PkgPath] = pkg.ID
+	}
+
+	// If no new imports are added, it is safe to avoid loading any needPkgs.
+	// Otherwise, it's hard to tell which package is actually being loaded
+	// (due to vendoring) and whether any modified package will show up
+	// in the transitive set of dependencies (because new imports are added,
+	// potentially modifying the transitive set of dependencies).
+	var overlayAddsImports bool
+
+	for opath, contents := range cfg.Overlay {
+		base := filepath.Base(opath)
+		dir := filepath.Dir(opath)
+		var pkg *Package
+		var testVariantOf *Package // if opath is a test file, this is the package it is testing
+		var fileExists bool
+		isTest := strings.HasSuffix(opath, "_test.go")
+		pkgName, ok := extractPackageName(opath, contents)
+		if !ok {
+			// Don't bother adding a file that doesn't even have a parsable package statement
+			// to the overlay.
+			continue
+		}
+	nextPackage:
+		for _, p := range response.dr.Packages {
+			if pkgName != p.Name && p.ID != "command-line-arguments" {
+				continue
+			}
+			for _, f := range p.GoFiles {
+				if !sameFile(filepath.Dir(f), dir) {
+					continue
+				}
+				if isTest && !hasTestFiles(p) {
+					// TODO(matloob): Are there packages other than the 'production' variant
+					// of a package that this can match? This shouldn't match the test main package
+					// because the file is generated in another directory.
+					testVariantOf = p
+					continue nextPackage
+				}
+				pkg = p
+				if filepath.Base(f) == base {
+					fileExists = true
+				}
+			}
+		}
+		// The overlay could have included an entirely new package.
+		if pkg == nil {
+			// Try to find the module or gopath dir the file is contained in.
+			// Then for modules, add the module opath to the beginning.
+			var pkgPath string
+			for rdir, rpath := range rootDirs().rootDirs {
+				// TODO(matloob): This doesn't properly handle symlinks.
+				r, err := filepath.Rel(rdir, dir)
+				if err != nil {
+					continue
+				}
+				pkgPath = filepath.ToSlash(r)
+				if rpath != "" {
+					pkgPath = path.Join(rpath, pkgPath)
+				}
+				// We only create one new package even it can belong in multiple modules or GOPATH entries.
+				// This is okay because tools (such as the LSP) that use overlays will recompute the overlay
+				// once the file is saved, and golist will do the right thing.
+				// TODO(matloob): Implement module tiebreaking?
+				break
+			}
+			if pkgPath == "" {
+				continue
+			}
+			isXTest := strings.HasSuffix(pkgName, "_test")
+			if isXTest {
+				pkgPath += "_test"
+			}
+			id := pkgPath
+			if isTest && !isXTest {
+				id = fmt.Sprintf("%s [%s.test]", pkgPath, pkgPath)
+			}
+			// Try to reclaim a package with the same id if it exists in the response.
+			for _, p := range response.dr.Packages {
+				if reclaimPackage(p, id, opath, contents) {
+					pkg = p
+					break
+				}
+			}
+			// Otherwise, create a new package
+			if pkg == nil {
+				pkg = &Package{PkgPath: pkgPath, ID: id, Name: pkgName, Imports: make(map[string]*Package)}
+				response.addPackage(pkg)
+				havePkgs[pkg.PkgPath] = id
+				// Add the production package's sources for a test variant.
+				if isTest && !isXTest && testVariantOf != nil {
+					pkg.GoFiles = append(pkg.GoFiles, testVariantOf.GoFiles...)
+					pkg.CompiledGoFiles = append(pkg.CompiledGoFiles, testVariantOf.CompiledGoFiles...)
+				}
+			}
+		}
+		if !fileExists {
+			pkg.GoFiles = append(pkg.GoFiles, opath)
+			// TODO(matloob): Adding the file to CompiledGoFiles can exhibit the wrong behavior
+			// if the file will be ignored due to its build tags.
+			pkg.CompiledGoFiles = append(pkg.CompiledGoFiles, opath)
+			modifiedPkgsSet[pkg.ID] = true
+		}
+		imports, err := extractImports(opath, contents)
+		if err != nil {
+			// Let the parser or type checker report errors later.
+			continue
+		}
+		for _, imp := range imports {
+			_, found := pkg.Imports[imp]
+			if !found {
+				overlayAddsImports = true
+				// TODO(matloob): Handle cases when the following block isn't correct.
+				// These include imports of test variants, imports of vendored packages, etc.
+				id, ok := havePkgs[imp]
+				if !ok {
+					id = imp
+				}
+				pkg.Imports[imp] = &Package{ID: id}
+			}
+		}
+		continue
+	}
+
+	// toPkgPath tries to guess the package path given the id.
+	// This isn't always correct -- it's certainly wrong for
+	// vendored packages' paths.
+	toPkgPath := func(id string) string {
+		// TODO(matloob): Handle vendor paths.
+		i := strings.IndexByte(id, ' ')
+		if i >= 0 {
+			return id[:i]
+		}
+		return id
+	}
+
+	// Do another pass now that new packages have been created to determine the
+	// set of missing packages.
+	for _, pkg := range response.dr.Packages {
+		for _, imp := range pkg.Imports {
+			pkgPath := toPkgPath(imp.ID)
+			if _, ok := havePkgs[pkgPath]; !ok {
+				needPkgsSet[pkgPath] = true
+			}
+		}
+	}
+
+	if overlayAddsImports {
+		needPkgs = make([]string, 0, len(needPkgsSet))
+		for pkg := range needPkgsSet {
+			needPkgs = append(needPkgs, pkg)
+		}
+	}
+	modifiedPkgs = make([]string, 0, len(modifiedPkgsSet))
+	for pkg := range modifiedPkgsSet {
+		modifiedPkgs = append(modifiedPkgs, pkg)
+	}
+	return modifiedPkgs, needPkgs, err
+}
+
+func hasTestFiles(p *Package) bool {
+	for _, f := range p.GoFiles {
+		if strings.HasSuffix(f, "_test.go") {
+			return true
+		}
+	}
+	return false
+}
+
+// determineRootDirs returns a mapping from directories code can be contained in to the
+// corresponding import path prefixes of those directories.
+// Its result is used to try to determine the import path for a package containing
+// an overlay file.
+func determineRootDirs(cfg *Config) map[string]string {
+	// Assume modules first:
+	out, err := invokeGo(cfg, "list", "-m", "-json", "all")
+	if err != nil {
+		return determineRootDirsGOPATH(cfg)
+	}
+	m := map[string]string{}
+	type jsonMod struct{ Path, Dir string }
+	for dec := json.NewDecoder(out); dec.More(); {
+		mod := new(jsonMod)
+		if err := dec.Decode(mod); err != nil {
+			return m // Give up and return an empty map. Package won't be found for overlay.
+		}
+		if mod.Dir != "" && mod.Path != "" {
+			// This is a valid module; add it to the map.
+			m[mod.Dir] = mod.Path
+		}
+	}
+	return m
+}
+
+func determineRootDirsGOPATH(cfg *Config) map[string]string {
+	m := map[string]string{}
+	out, err := invokeGo(cfg, "env", "GOPATH")
+	if err != nil {
+		// Could not determine root dir mapping. Everything is best-effort, so just return an empty map.
+		// When we try to find the import path for a directory, there will be no root-dir match and
+		// we'll give up.
+		return m
+	}
+	for _, p := range filepath.SplitList(string(bytes.TrimSpace(out.Bytes()))) {
+		m[filepath.Join(p, "src")] = ""
+	}
+	return m
+}
+
+func extractImports(filename string, contents []byte) ([]string, error) {
+	f, err := parser.ParseFile(token.NewFileSet(), filename, contents, parser.ImportsOnly) // TODO(matloob): reuse fileset?
+	if err != nil {
+		return nil, err
+	}
+	var res []string
+	for _, imp := range f.Imports {
+		quotedPath := imp.Path.Value
+		path, err := strconv.Unquote(quotedPath)
+		if err != nil {
+			return nil, err
+		}
+		res = append(res, path)
+	}
+	return res, nil
+}
+
+// reclaimPackage attempts to reuse a package that failed to load in an overlay.
+//
+// If the package has errors and has no Name, GoFiles, or Imports,
+// then it's possible that it doesn't yet exist on disk.
+func reclaimPackage(pkg *Package, id string, filename string, contents []byte) bool {
+	// TODO(rstambler): Check the message of the actual error?
+	// It differs between $GOPATH and module mode.
+	if pkg.ID != id {
+		return false
+	}
+	if len(pkg.Errors) != 1 {
+		return false
+	}
+	if pkg.Name != "" || pkg.ExportFile != "" {
+		return false
+	}
+	if len(pkg.GoFiles) > 0 || len(pkg.CompiledGoFiles) > 0 || len(pkg.OtherFiles) > 0 {
+		return false
+	}
+	if len(pkg.Imports) > 0 {
+		return false
+	}
+	pkgName, ok := extractPackageName(filename, contents)
+	if !ok {
+		return false
+	}
+	pkg.Name = pkgName
+	pkg.Errors = nil
+	return true
+}
+
+func extractPackageName(filename string, contents []byte) (string, bool) {
+	// TODO(rstambler): Check the message of the actual error?
+	// It differs between $GOPATH and module mode.
+	f, err := parser.ParseFile(token.NewFileSet(), filename, contents, parser.PackageClauseOnly) // TODO(matloob): reuse fileset?
+	if err != nil {
+		return "", false
+	}
+	return f.Name.Name, true
+}
diff --git a/vendor/golang.org/x/tools/go/packages/packages.go b/vendor/golang.org/x/tools/go/packages/packages.go
new file mode 100644
index 0000000000..4ca2b11732
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/packages/packages.go
@@ -0,0 +1,1100 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package packages
+
+// See doc.go for package documentation and implementation notes.
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"go/ast"
+	"go/parser"
+	"go/scanner"
+	"go/token"
+	"go/types"
+	"io/ioutil"
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync"
+
+	"golang.org/x/tools/go/gcexportdata"
+)
+
+// A LoadMode controls the amount of detail to return when loading.
+// The bits below can be combined to specify which fields should be
+// filled in the result packages.
+// The zero value is a special case, equivalent to combining
+// the NeedName, NeedFiles, and NeedCompiledGoFiles bits.
+// ID and Errors (if present) will always be filled.
+// Load may return more information than requested.
+type LoadMode int
+
+const (
+	// NeedName adds Name and PkgPath.
+	NeedName LoadMode = 1 << iota
+
+	// NeedFiles adds GoFiles and OtherFiles.
+	NeedFiles
+
+	// NeedCompiledGoFiles adds CompiledGoFiles.
+	NeedCompiledGoFiles
+
+	// NeedImports adds Imports. If NeedDeps is not set, the Imports field will contain
+	// "placeholder" Packages with only the ID set.
+	NeedImports
+
+	// NeedDeps adds the fields requested by the LoadMode in the packages in Imports. If NeedImports
+	// is not set NeedDeps has no effect.
+	NeedDeps
+
+	// NeedExportsFile adds ExportsFile.
+	NeedExportsFile
+
+	// NeedTypes adds Types, Fset, and IllTyped.
+	NeedTypes
+
+	// NeedSyntax adds Syntax.
+	NeedSyntax
+
+	// NeedTypesInfo adds TypesInfo.
+	NeedTypesInfo
+
+	// NeedTypesSizes adds TypesSizes.
+	NeedTypesSizes
+)
+
+const (
+	// Deprecated: LoadFiles exists for historical compatibility
+	// and should not be used. Please directly specify the needed fields using the Need values.
+	LoadFiles = NeedName | NeedFiles | NeedCompiledGoFiles
+
+	// Deprecated: LoadImports exists for historical compatibility
+	// and should not be used. Please directly specify the needed fields using the Need values.
+	LoadImports = LoadFiles | NeedImports | NeedDeps
+
+	// Deprecated: LoadTypes exists for historical compatibility
+	// and should not be used. Please directly specify the needed fields using the Need values.
+	LoadTypes = LoadImports | NeedTypes | NeedTypesSizes
+
+	// Deprecated: LoadSyntax exists for historical compatibility
+	// and should not be used. Please directly specify the needed fields using the Need values.
+	LoadSyntax = LoadTypes | NeedSyntax | NeedTypesInfo
+
+	// Deprecated: LoadAllSyntax exists for historical compatibility
+	// and should not be used. Please directly specify the needed fields using the Need values.
+	LoadAllSyntax = LoadSyntax
+)
+
+// A Config specifies details about how packages should be loaded.
+// The zero value is a valid configuration.
+// Calls to Load do not modify this struct.
+type Config struct {
+	// Mode controls the level of information returned for each package.
+	Mode LoadMode
+
+	// Context specifies the context for the load operation.
+	// If the context is cancelled, the loader may stop early
+	// and return an ErrCancelled error.
+	// If Context is nil, the load cannot be cancelled.
+	Context context.Context
+
+	// Logf is the logger for the config.
+	// If the user provides a logger, debug logging is enabled.
+	// If the GOPACKAGESDEBUG environment variable is set to true,
+	// but the logger is nil, default to log.Printf.
+	Logf func(format string, args ...interface{})
+
+	// Dir is the directory in which to run the build system's query tool
+	// that provides information about the packages.
+	// If Dir is empty, the tool is run in the current directory.
+	Dir string
+
+	// Env is the environment to use when invoking the build system's query tool.
+	// If Env is nil, the current environment is used.
+	// As in os/exec's Cmd, only the last value in the slice for
+	// each environment key is used. To specify the setting of only
+	// a few variables, append to the current environment, as in:
+	//
+	//	opt.Env = append(os.Environ(), "GOOS=plan9", "GOARCH=386")
+	//
+	Env []string
+
+	// BuildFlags is a list of command-line flags to be passed through to
+	// the build system's query tool.
+	BuildFlags []string
+
+	// Fset provides source position information for syntax trees and types.
+	// If Fset is nil, Load will use a new fileset, but preserve Fset's value.
+	Fset *token.FileSet
+
+	// ParseFile is called to read and parse each file
+	// when preparing a package's type-checked syntax tree.
+	// It must be safe to call ParseFile simultaneously from multiple goroutines.
+	// If ParseFile is nil, the loader will uses parser.ParseFile.
+	//
+	// ParseFile should parse the source from src and use filename only for
+	// recording position information.
+	//
+	// An application may supply a custom implementation of ParseFile
+	// to change the effective file contents or the behavior of the parser,
+	// or to modify the syntax tree. For example, selectively eliminating
+	// unwanted function bodies can significantly accelerate type checking.
+	ParseFile func(fset *token.FileSet, filename string, src []byte) (*ast.File, error)
+
+	// If Tests is set, the loader includes not just the packages
+	// matching a particular pattern but also any related test packages,
+	// including test-only variants of the package and the test executable.
+	//
+	// For example, when using the go command, loading "fmt" with Tests=true
+	// returns four packages, with IDs "fmt" (the standard package),
+	// "fmt [fmt.test]" (the package as compiled for the test),
+	// "fmt_test" (the test functions from source files in package fmt_test),
+	// and "fmt.test" (the test binary).
+	//
+	// In build systems with explicit names for tests,
+	// setting Tests may have no effect.
+	Tests bool
+
+	// Overlay provides a mapping of absolute file paths to file contents.
+	// If the file  with the given path already exists, the parser will use the
+	// alternative file contents provided by the map.
+	//
+	// Overlays provide incomplete support for when a given file doesn't
+	// already exist on disk. See the package doc above for more details.
+	Overlay map[string][]byte
+}
+
+// driver is the type for functions that query the build system for the
+// packages named by the patterns.
+type driver func(cfg *Config, patterns ...string) (*driverResponse, error)
+
+// driverResponse contains the results for a driver query.
+type driverResponse struct {
+	// Sizes, if not nil, is the types.Sizes to use when type checking.
+	Sizes *types.StdSizes
+
+	// Roots is the set of package IDs that make up the root packages.
+	// We have to encode this separately because when we encode a single package
+	// we cannot know if it is one of the roots as that requires knowledge of the
+	// graph it is part of.
+	Roots []string `json:",omitempty"`
+
+	// Packages is the full set of packages in the graph.
+	// The packages are not connected into a graph.
+	// The Imports if populated will be stubs that only have their ID set.
+	// Imports will be connected and then type and syntax information added in a
+	// later pass (see refine).
+	Packages []*Package
+}
+
+// Load loads and returns the Go packages named by the given patterns.
+//
+// Config specifies loading options;
+// nil behaves the same as an empty Config.
+//
+// Load returns an error if any of the patterns was invalid
+// as defined by the underlying build system.
+// It may return an empty list of packages without an error,
+// for instance for an empty expansion of a valid wildcard.
+// Errors associated with a particular package are recorded in the
+// corresponding Package's Errors list, and do not cause Load to
+// return an error. Clients may need to handle such errors before
+// proceeding with further analysis. The PrintErrors function is
+// provided for convenient display of all errors.
+func Load(cfg *Config, patterns ...string) ([]*Package, error) {
+	l := newLoader(cfg)
+	response, err := defaultDriver(&l.Config, patterns...)
+	if err != nil {
+		return nil, err
+	}
+	l.sizes = response.Sizes
+	return l.refine(response.Roots, response.Packages...)
+}
+
+// defaultDriver is a driver that looks for an external driver binary, and if
+// it does not find it falls back to the built in go list driver.
+func defaultDriver(cfg *Config, patterns ...string) (*driverResponse, error) {
+	driver := findExternalDriver(cfg)
+	if driver == nil {
+		driver = goListDriver
+	}
+	return driver(cfg, patterns...)
+}
+
+// A Package describes a loaded Go package.
+type Package struct {
+	// ID is a unique identifier for a package,
+	// in a syntax provided by the underlying build system.
+	//
+	// Because the syntax varies based on the build system,
+	// clients should treat IDs as opaque and not attempt to
+	// interpret them.
+	ID string
+
+	// Name is the package name as it appears in the package source code.
+	Name string
+
+	// PkgPath is the package path as used by the go/types package.
+	PkgPath string
+
+	// Errors contains any errors encountered querying the metadata
+	// of the package, or while parsing or type-checking its files.
+	Errors []Error
+
+	// GoFiles lists the absolute file paths of the package's Go source files.
+	GoFiles []string
+
+	// CompiledGoFiles lists the absolute file paths of the package's source
+	// files that were presented to the compiler.
+	// This may differ from GoFiles if files are processed before compilation.
+	CompiledGoFiles []string
+
+	// OtherFiles lists the absolute file paths of the package's non-Go source files,
+	// including assembly, C, C++, Fortran, Objective-C, SWIG, and so on.
+	OtherFiles []string
+
+	// ExportFile is the absolute path to a file containing type
+	// information for the package as provided by the build system.
+	ExportFile string
+
+	// Imports maps import paths appearing in the package's Go source files
+	// to corresponding loaded Packages.
+	Imports map[string]*Package
+
+	// Types provides type information for the package.
+	// The NeedTypes LoadMode bit sets this field for packages matching the
+	// patterns; type information for dependencies may be missing or incomplete,
+	// unless NeedDeps and NeedImports are also set.
+	Types *types.Package
+
+	// Fset provides position information for Types, TypesInfo, and Syntax.
+	// It is set only when Types is set.
+	Fset *token.FileSet
+
+	// IllTyped indicates whether the package or any dependency contains errors.
+	// It is set only when Types is set.
+	IllTyped bool
+
+	// Syntax is the package's syntax trees, for the files listed in CompiledGoFiles.
+	//
+	// The NeedSyntax LoadMode bit populates this field for packages matching the patterns.
+	// If NeedDeps and NeedImports are also set, this field will also be populated
+	// for dependencies.
+	Syntax []*ast.File
+
+	// TypesInfo provides type information about the package's syntax trees.
+	// It is set only when Syntax is set.
+	TypesInfo *types.Info
+
+	// TypesSizes provides the effective size function for types in TypesInfo.
+	TypesSizes types.Sizes
+}
+
+// An Error describes a problem with a package's metadata, syntax, or types.
+type Error struct {
+	Pos  string // "file:line:col" or "file:line" or "" or "-"
+	Msg  string
+	Kind ErrorKind
+}
+
+// ErrorKind describes the source of the error, allowing the user to
+// differentiate between errors generated by the driver, the parser, or the
+// type-checker.
+type ErrorKind int
+
+const (
+	UnknownError ErrorKind = iota
+	ListError
+	ParseError
+	TypeError
+)
+
+func (err Error) Error() string {
+	pos := err.Pos
+	if pos == "" {
+		pos = "-" // like token.Position{}.String()
+	}
+	return pos + ": " + err.Msg
+}
+
+// flatPackage is the JSON form of Package
+// It drops all the type and syntax fields, and transforms the Imports
+//
+// TODO(adonovan): identify this struct with Package, effectively
+// publishing the JSON protocol.
+type flatPackage struct {
+	ID              string
+	Name            string            `json:",omitempty"`
+	PkgPath         string            `json:",omitempty"`
+	Errors          []Error           `json:",omitempty"`
+	GoFiles         []string          `json:",omitempty"`
+	CompiledGoFiles []string          `json:",omitempty"`
+	OtherFiles      []string          `json:",omitempty"`
+	ExportFile      string            `json:",omitempty"`
+	Imports         map[string]string `json:",omitempty"`
+}
+
+// MarshalJSON returns the Package in its JSON form.
+// For the most part, the structure fields are written out unmodified, and
+// the type and syntax fields are skipped.
+// The imports are written out as just a map of path to package id.
+// The errors are written using a custom type that tries to preserve the
+// structure of error types we know about.
+//
+// This method exists to enable support for additional build systems.  It is
+// not intended for use by clients of the API and we may change the format.
+func (p *Package) MarshalJSON() ([]byte, error) {
+	flat := &flatPackage{
+		ID:              p.ID,
+		Name:            p.Name,
+		PkgPath:         p.PkgPath,
+		Errors:          p.Errors,
+		GoFiles:         p.GoFiles,
+		CompiledGoFiles: p.CompiledGoFiles,
+		OtherFiles:      p.OtherFiles,
+		ExportFile:      p.ExportFile,
+	}
+	if len(p.Imports) > 0 {
+		flat.Imports = make(map[string]string, len(p.Imports))
+		for path, ipkg := range p.Imports {
+			flat.Imports[path] = ipkg.ID
+		}
+	}
+	return json.Marshal(flat)
+}
+
+// UnmarshalJSON reads in a Package from its JSON format.
+// See MarshalJSON for details about the format accepted.
+func (p *Package) UnmarshalJSON(b []byte) error {
+	flat := &flatPackage{}
+	if err := json.Unmarshal(b, &flat); err != nil {
+		return err
+	}
+	*p = Package{
+		ID:              flat.ID,
+		Name:            flat.Name,
+		PkgPath:         flat.PkgPath,
+		Errors:          flat.Errors,
+		GoFiles:         flat.GoFiles,
+		CompiledGoFiles: flat.CompiledGoFiles,
+		OtherFiles:      flat.OtherFiles,
+		ExportFile:      flat.ExportFile,
+	}
+	if len(flat.Imports) > 0 {
+		p.Imports = make(map[string]*Package, len(flat.Imports))
+		for path, id := range flat.Imports {
+			p.Imports[path] = &Package{ID: id}
+		}
+	}
+	return nil
+}
+
+func (p *Package) String() string { return p.ID }
+
+// loaderPackage augments Package with state used during the loading phase
+type loaderPackage struct {
+	*Package
+	importErrors map[string]error // maps each bad import to its error
+	loadOnce     sync.Once
+	color        uint8 // for cycle detection
+	needsrc      bool  // load from source (Mode >= LoadTypes)
+	needtypes    bool  // type information is either requested or depended on
+	initial      bool  // package was matched by a pattern
+}
+
+// loader holds the working state of a single call to load.
+type loader struct {
+	pkgs map[string]*loaderPackage
+	Config
+	sizes        types.Sizes
+	parseCache   map[string]*parseValue
+	parseCacheMu sync.Mutex
+	exportMu     sync.Mutex // enforces mutual exclusion of exportdata operations
+
+	// TODO(matloob): Add an implied mode here and use that instead of mode.
+	// Implied mode would contain all the fields we need the data for so we can
+	// get the actually requested fields. We'll zero them out before returning
+	// packages to the user. This will make it easier for us to get the conditions
+	// where we need certain modes right.
+}
+
+type parseValue struct {
+	f     *ast.File
+	err   error
+	ready chan struct{}
+}
+
+func newLoader(cfg *Config) *loader {
+	ld := &loader{
+		parseCache: map[string]*parseValue{},
+	}
+	if cfg != nil {
+		ld.Config = *cfg
+		// If the user has provided a logger, use it.
+		ld.Config.Logf = cfg.Logf
+	}
+	if ld.Config.Logf == nil {
+		// If the GOPACKAGESDEBUG environment variable is set to true,
+		// but the user has not provided a logger, default to log.Printf.
+		if debug {
+			ld.Config.Logf = log.Printf
+		} else {
+			ld.Config.Logf = func(format string, args ...interface{}) {}
+		}
+	}
+	if ld.Config.Mode == 0 {
+		ld.Config.Mode = NeedName | NeedFiles | NeedCompiledGoFiles // Preserve zero behavior of Mode for backwards compatibility.
+	}
+	if ld.Config.Env == nil {
+		ld.Config.Env = os.Environ()
+	}
+	if ld.Context == nil {
+		ld.Context = context.Background()
+	}
+	if ld.Dir == "" {
+		if dir, err := os.Getwd(); err == nil {
+			ld.Dir = dir
+		}
+	}
+
+	if ld.Mode&NeedTypes != 0 {
+		if ld.Fset == nil {
+			ld.Fset = token.NewFileSet()
+		}
+
+		// ParseFile is required even in LoadTypes mode
+		// because we load source if export data is missing.
+		if ld.ParseFile == nil {
+			ld.ParseFile = func(fset *token.FileSet, filename string, src []byte) (*ast.File, error) {
+				const mode = parser.AllErrors | parser.ParseComments
+				return parser.ParseFile(fset, filename, src, mode)
+			}
+		}
+	}
+	return ld
+}
+
+// refine connects the supplied packages into a graph and then adds type and
+// and syntax information as requested by the LoadMode.
+func (ld *loader) refine(roots []string, list ...*Package) ([]*Package, error) {
+	rootMap := make(map[string]int, len(roots))
+	for i, root := range roots {
+		rootMap[root] = i
+	}
+	ld.pkgs = make(map[string]*loaderPackage)
+	// first pass, fixup and build the map and roots
+	var initial = make([]*loaderPackage, len(roots))
+	for _, pkg := range list {
+		rootIndex := -1
+		if i, found := rootMap[pkg.ID]; found {
+			rootIndex = i
+		}
+		lpkg := &loaderPackage{
+			Package:   pkg,
+			needtypes: (ld.Mode&(NeedTypes|NeedTypesInfo) != 0 && rootIndex < 0) || rootIndex >= 0,
+			needsrc: (ld.Mode&(NeedSyntax|NeedTypesInfo) != 0 && ld.Mode&NeedDeps != 0 && rootIndex < 0) || rootIndex >= 0 ||
+				len(ld.Overlay) > 0 || // Overlays can invalidate export data. TODO(matloob): make this check fine-grained based on dependencies on overlaid files
+				pkg.ExportFile == "" && pkg.PkgPath != "unsafe",
+		}
+		ld.pkgs[lpkg.ID] = lpkg
+		if rootIndex >= 0 {
+			initial[rootIndex] = lpkg
+			lpkg.initial = true
+		}
+	}
+	for i, root := range roots {
+		if initial[i] == nil {
+			return nil, fmt.Errorf("root package %v is missing", root)
+		}
+	}
+
+	// Materialize the import graph.
+
+	const (
+		white = 0 // new
+		grey  = 1 // in progress
+		black = 2 // complete
+	)
+
+	// visit traverses the import graph, depth-first,
+	// and materializes the graph as Packages.Imports.
+	//
+	// Valid imports are saved in the Packages.Import map.
+	// Invalid imports (cycles and missing nodes) are saved in the importErrors map.
+	// Thus, even in the presence of both kinds of errors, the Import graph remains a DAG.
+	//
+	// visit returns whether the package needs src or has a transitive
+	// dependency on a package that does. These are the only packages
+	// for which we load source code.
+	var stack []*loaderPackage
+	var visit func(lpkg *loaderPackage) bool
+	var srcPkgs []*loaderPackage
+	visit = func(lpkg *loaderPackage) bool {
+		switch lpkg.color {
+		case black:
+			return lpkg.needsrc
+		case grey:
+			panic("internal error: grey node")
+		}
+		lpkg.color = grey
+		stack = append(stack, lpkg) // push
+		stubs := lpkg.Imports       // the structure form has only stubs with the ID in the Imports
+		// If NeedTypesInfo we need dependencies (at least for the roots) to typecheck the package.
+		// If NeedImports isn't set, the imports fields will all be zeroed out.
+		// If NeedDeps isn't also set we want to keep the stubs.
+		if ld.Mode&NeedTypesInfo != 0 || (ld.Mode&NeedImports != 0 && ld.Mode&NeedDeps != 0) {
+			lpkg.Imports = make(map[string]*Package, len(stubs))
+			for importPath, ipkg := range stubs {
+				var importErr error
+				imp := ld.pkgs[ipkg.ID]
+				if imp == nil {
+					// (includes package "C" when DisableCgo)
+					importErr = fmt.Errorf("missing package: %q", ipkg.ID)
+				} else if imp.color == grey {
+					importErr = fmt.Errorf("import cycle: %s", stack)
+				}
+				if importErr != nil {
+					if lpkg.importErrors == nil {
+						lpkg.importErrors = make(map[string]error)
+					}
+					lpkg.importErrors[importPath] = importErr
+					continue
+				}
+
+				// If !NeedDeps, just fill Imports for the root. No need to recurse further.
+				if ld.Mode&NeedDeps != 0 {
+					if visit(imp) {
+						lpkg.needsrc = true
+					}
+				}
+				lpkg.Imports[importPath] = imp.Package
+			}
+		}
+		if lpkg.needsrc {
+			srcPkgs = append(srcPkgs, lpkg)
+		}
+		if ld.Mode&NeedTypesSizes != 0 {
+			lpkg.TypesSizes = ld.sizes
+		}
+		stack = stack[:len(stack)-1] // pop
+		lpkg.color = black
+
+		return lpkg.needsrc
+	}
+
+	if ld.Mode&(NeedImports|NeedDeps|NeedTypesInfo) == 0 {
+		// We do this to drop the stub import packages that we are not even going to try to resolve.
+		for _, lpkg := range initial {
+			lpkg.Imports = nil
+		}
+	} else {
+		// For each initial package, create its import DAG.
+		for _, lpkg := range initial {
+			visit(lpkg)
+		}
+	}
+	if ld.Mode&NeedDeps != 0 { // TODO(matloob): This is only the case if NeedTypes is also set, right?
+		for _, lpkg := range srcPkgs {
+			// Complete type information is required for the
+			// immediate dependencies of each source package.
+			for _, ipkg := range lpkg.Imports {
+				imp := ld.pkgs[ipkg.ID]
+				imp.needtypes = true
+			}
+		}
+	}
+	// Load type data if needed, starting at
+	// the initial packages (roots of the import DAG).
+	if ld.Mode&NeedTypes != 0 {
+		var wg sync.WaitGroup
+		for _, lpkg := range initial {
+			wg.Add(1)
+			go func(lpkg *loaderPackage) {
+				ld.loadRecursive(lpkg)
+				wg.Done()
+			}(lpkg)
+		}
+		wg.Wait()
+	}
+
+	result := make([]*Package, len(initial))
+	importPlaceholders := make(map[string]*Package)
+	for i, lpkg := range initial {
+		result[i] = lpkg.Package
+	}
+	for i := range ld.pkgs {
+		// Clear all unrequested fields, for extra de-Hyrum-ization.
+		if ld.Mode&NeedName == 0 {
+			ld.pkgs[i].Name = ""
+			ld.pkgs[i].PkgPath = ""
+		}
+		if ld.Mode&NeedFiles == 0 {
+			ld.pkgs[i].GoFiles = nil
+			ld.pkgs[i].OtherFiles = nil
+		}
+		if ld.Mode&NeedCompiledGoFiles == 0 {
+			ld.pkgs[i].CompiledGoFiles = nil
+		}
+		if ld.Mode&NeedImports == 0 {
+			ld.pkgs[i].Imports = nil
+		}
+		if ld.Mode&NeedExportsFile == 0 {
+			ld.pkgs[i].ExportFile = ""
+		}
+		if ld.Mode&NeedTypes == 0 {
+			ld.pkgs[i].Types = nil
+			ld.pkgs[i].Fset = nil
+			ld.pkgs[i].IllTyped = false
+		}
+		if ld.Mode&NeedSyntax == 0 {
+			ld.pkgs[i].Syntax = nil
+		}
+		if ld.Mode&NeedTypesInfo == 0 {
+			ld.pkgs[i].TypesInfo = nil
+		}
+		if ld.Mode&NeedTypesSizes == 0 {
+			ld.pkgs[i].TypesSizes = nil
+		}
+		if ld.Mode&NeedDeps == 0 {
+			for j, pkg := range ld.pkgs[i].Imports {
+				ph, ok := importPlaceholders[pkg.ID]
+				if !ok {
+					ph = &Package{ID: pkg.ID}
+					importPlaceholders[pkg.ID] = ph
+				}
+				ld.pkgs[i].Imports[j] = ph
+			}
+		}
+	}
+	return result, nil
+}
+
+// loadRecursive loads the specified package and its dependencies,
+// recursively, in parallel, in topological order.
+// It is atomic and idempotent.
+// Precondition: ld.Mode&NeedTypes.
+func (ld *loader) loadRecursive(lpkg *loaderPackage) {
+	lpkg.loadOnce.Do(func() {
+		// Load the direct dependencies, in parallel.
+		var wg sync.WaitGroup
+		for _, ipkg := range lpkg.Imports {
+			imp := ld.pkgs[ipkg.ID]
+			wg.Add(1)
+			go func(imp *loaderPackage) {
+				ld.loadRecursive(imp)
+				wg.Done()
+			}(imp)
+		}
+		wg.Wait()
+
+		ld.loadPackage(lpkg)
+	})
+}
+
+// loadPackage loads the specified package.
+// It must be called only once per Package,
+// after immediate dependencies are loaded.
+// Precondition: ld.Mode & NeedTypes.
+func (ld *loader) loadPackage(lpkg *loaderPackage) {
+	if lpkg.PkgPath == "unsafe" {
+		// Fill in the blanks to avoid surprises.
+		lpkg.Types = types.Unsafe
+		lpkg.Fset = ld.Fset
+		lpkg.Syntax = []*ast.File{}
+		lpkg.TypesInfo = new(types.Info)
+		lpkg.TypesSizes = ld.sizes
+		return
+	}
+
+	// Call NewPackage directly with explicit name.
+	// This avoids skew between golist and go/types when the files'
+	// package declarations are inconsistent.
+	lpkg.Types = types.NewPackage(lpkg.PkgPath, lpkg.Name)
+	lpkg.Fset = ld.Fset
+
+	// Subtle: we populate all Types fields with an empty Package
+	// before loading export data so that export data processing
+	// never has to create a types.Package for an indirect dependency,
+	// which would then require that such created packages be explicitly
+	// inserted back into the Import graph as a final step after export data loading.
+	// The Diamond test exercises this case.
+	if !lpkg.needtypes {
+		return
+	}
+	if !lpkg.needsrc {
+		ld.loadFromExportData(lpkg)
+		return // not a source package, don't get syntax trees
+	}
+
+	appendError := func(err error) {
+		// Convert various error types into the one true Error.
+		var errs []Error
+		switch err := err.(type) {
+		case Error:
+			// from driver
+			errs = append(errs, err)
+
+		case *os.PathError:
+			// from parser
+			errs = append(errs, Error{
+				Pos:  err.Path + ":1",
+				Msg:  err.Err.Error(),
+				Kind: ParseError,
+			})
+
+		case scanner.ErrorList:
+			// from parser
+			for _, err := range err {
+				errs = append(errs, Error{
+					Pos:  err.Pos.String(),
+					Msg:  err.Msg,
+					Kind: ParseError,
+				})
+			}
+
+		case types.Error:
+			// from type checker
+			errs = append(errs, Error{
+				Pos:  err.Fset.Position(err.Pos).String(),
+				Msg:  err.Msg,
+				Kind: TypeError,
+			})
+
+		default:
+			// unexpected impoverished error from parser?
+			errs = append(errs, Error{
+				Pos:  "-",
+				Msg:  err.Error(),
+				Kind: UnknownError,
+			})
+
+			// If you see this error message, please file a bug.
+			log.Printf("internal error: error %q (%T) without position", err, err)
+		}
+
+		lpkg.Errors = append(lpkg.Errors, errs...)
+	}
+
+	files, errs := ld.parseFiles(lpkg.CompiledGoFiles)
+	for _, err := range errs {
+		appendError(err)
+	}
+
+	lpkg.Syntax = files
+
+	lpkg.TypesInfo = &types.Info{
+		Types:      make(map[ast.Expr]types.TypeAndValue),
+		Defs:       make(map[*ast.Ident]types.Object),
+		Uses:       make(map[*ast.Ident]types.Object),
+		Implicits:  make(map[ast.Node]types.Object),
+		Scopes:     make(map[ast.Node]*types.Scope),
+		Selections: make(map[*ast.SelectorExpr]*types.Selection),
+	}
+	lpkg.TypesSizes = ld.sizes
+
+	importer := importerFunc(func(path string) (*types.Package, error) {
+		if path == "unsafe" {
+			return types.Unsafe, nil
+		}
+
+		// The imports map is keyed by import path.
+		ipkg := lpkg.Imports[path]
+		if ipkg == nil {
+			if err := lpkg.importErrors[path]; err != nil {
+				return nil, err
+			}
+			// There was skew between the metadata and the
+			// import declarations, likely due to an edit
+			// race, or because the ParseFile feature was
+			// used to supply alternative file contents.
+			return nil, fmt.Errorf("no metadata for %s", path)
+		}
+
+		if ipkg.Types != nil && ipkg.Types.Complete() {
+			return ipkg.Types, nil
+		}
+		log.Fatalf("internal error: nil Pkg importing %q from %q", path, lpkg)
+		panic("unreachable")
+	})
+
+	// type-check
+	tc := &types.Config{
+		Importer: importer,
+
+		// Type-check bodies of functions only in non-initial packages.
+		// Example: for import graph A->B->C and initial packages {A,C},
+		// we can ignore function bodies in B.
+		IgnoreFuncBodies: (ld.Mode&(NeedDeps|NeedTypesInfo) == 0) && !lpkg.initial,
+
+		Error: appendError,
+		Sizes: ld.sizes,
+	}
+	types.NewChecker(tc, ld.Fset, lpkg.Types, lpkg.TypesInfo).Files(lpkg.Syntax)
+
+	lpkg.importErrors = nil // no longer needed
+
+	// If !Cgo, the type-checker uses FakeImportC mode, so
+	// it doesn't invoke the importer for import "C",
+	// nor report an error for the import,
+	// or for any undefined C.f reference.
+	// We must detect this explicitly and correctly
+	// mark the package as IllTyped (by reporting an error).
+	// TODO(adonovan): if these errors are annoying,
+	// we could just set IllTyped quietly.
+	if tc.FakeImportC {
+	outer:
+		for _, f := range lpkg.Syntax {
+			for _, imp := range f.Imports {
+				if imp.Path.Value == `"C"` {
+					err := types.Error{Fset: ld.Fset, Pos: imp.Pos(), Msg: `import "C" ignored`}
+					appendError(err)
+					break outer
+				}
+			}
+		}
+	}
+
+	// Record accumulated errors.
+	illTyped := len(lpkg.Errors) > 0
+	if !illTyped {
+		for _, imp := range lpkg.Imports {
+			if imp.IllTyped {
+				illTyped = true
+				break
+			}
+		}
+	}
+	lpkg.IllTyped = illTyped
+}
+
+// An importFunc is an implementation of the single-method
+// types.Importer interface based on a function value.
+type importerFunc func(path string) (*types.Package, error)
+
+func (f importerFunc) Import(path string) (*types.Package, error) { return f(path) }
+
+// We use a counting semaphore to limit
+// the number of parallel I/O calls per process.
+var ioLimit = make(chan bool, 20)
+
+func (ld *loader) parseFile(filename string) (*ast.File, error) {
+	ld.parseCacheMu.Lock()
+	v, ok := ld.parseCache[filename]
+	if ok {
+		// cache hit
+		ld.parseCacheMu.Unlock()
+		<-v.ready
+	} else {
+		// cache miss
+		v = &parseValue{ready: make(chan struct{})}
+		ld.parseCache[filename] = v
+		ld.parseCacheMu.Unlock()
+
+		var src []byte
+		for f, contents := range ld.Config.Overlay {
+			if sameFile(f, filename) {
+				src = contents
+			}
+		}
+		var err error
+		if src == nil {
+			ioLimit <- true // wait
+			src, err = ioutil.ReadFile(filename)
+			<-ioLimit // signal
+		}
+		if err != nil {
+			v.err = err
+		} else {
+			v.f, v.err = ld.ParseFile(ld.Fset, filename, src)
+		}
+
+		close(v.ready)
+	}
+	return v.f, v.err
+}
+
+// parseFiles reads and parses the Go source files and returns the ASTs
+// of the ones that could be at least partially parsed, along with a
+// list of I/O and parse errors encountered.
+//
+// Because files are scanned in parallel, the token.Pos
+// positions of the resulting ast.Files are not ordered.
+//
+func (ld *loader) parseFiles(filenames []string) ([]*ast.File, []error) {
+	var wg sync.WaitGroup
+	n := len(filenames)
+	parsed := make([]*ast.File, n)
+	errors := make([]error, n)
+	for i, file := range filenames {
+		if ld.Config.Context.Err() != nil {
+			parsed[i] = nil
+			errors[i] = ld.Config.Context.Err()
+			continue
+		}
+		wg.Add(1)
+		go func(i int, filename string) {
+			parsed[i], errors[i] = ld.parseFile(filename)
+			wg.Done()
+		}(i, file)
+	}
+	wg.Wait()
+
+	// Eliminate nils, preserving order.
+	var o int
+	for _, f := range parsed {
+		if f != nil {
+			parsed[o] = f
+			o++
+		}
+	}
+	parsed = parsed[:o]
+
+	o = 0
+	for _, err := range errors {
+		if err != nil {
+			errors[o] = err
+			o++
+		}
+	}
+	errors = errors[:o]
+
+	return parsed, errors
+}
+
+// sameFile returns true if x and y have the same basename and denote
+// the same file.
+//
+func sameFile(x, y string) bool {
+	if x == y {
+		// It could be the case that y doesn't exist.
+		// For instance, it may be an overlay file that
+		// hasn't been written to disk. To handle that case
+		// let x == y through. (We added the exact absolute path
+		// string to the CompiledGoFiles list, so the unwritten
+		// overlay case implies x==y.)
+		return true
+	}
+	if strings.EqualFold(filepath.Base(x), filepath.Base(y)) { // (optimisation)
+		if xi, err := os.Stat(x); err == nil {
+			if yi, err := os.Stat(y); err == nil {
+				return os.SameFile(xi, yi)
+			}
+		}
+	}
+	return false
+}
+
+// loadFromExportData returns type information for the specified
+// package, loading it from an export data file on the first request.
+func (ld *loader) loadFromExportData(lpkg *loaderPackage) (*types.Package, error) {
+	if lpkg.PkgPath == "" {
+		log.Fatalf("internal error: Package %s has no PkgPath", lpkg)
+	}
+
+	// Because gcexportdata.Read has the potential to create or
+	// modify the types.Package for each node in the transitive
+	// closure of dependencies of lpkg, all exportdata operations
+	// must be sequential. (Finer-grained locking would require
+	// changes to the gcexportdata API.)
+	//
+	// The exportMu lock guards the Package.Pkg field and the
+	// types.Package it points to, for each Package in the graph.
+	//
+	// Not all accesses to Package.Pkg need to be protected by exportMu:
+	// graph ordering ensures that direct dependencies of source
+	// packages are fully loaded before the importer reads their Pkg field.
+	ld.exportMu.Lock()
+	defer ld.exportMu.Unlock()
+
+	if tpkg := lpkg.Types; tpkg != nil && tpkg.Complete() {
+		return tpkg, nil // cache hit
+	}
+
+	lpkg.IllTyped = true // fail safe
+
+	if lpkg.ExportFile == "" {
+		// Errors while building export data will have been printed to stderr.
+		return nil, fmt.Errorf("no export data file")
+	}
+	f, err := os.Open(lpkg.ExportFile)
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+
+	// Read gc export data.
+	//
+	// We don't currently support gccgo export data because all
+	// underlying workspaces use the gc toolchain. (Even build
+	// systems that support gccgo don't use it for workspace
+	// queries.)
+	r, err := gcexportdata.NewReader(f)
+	if err != nil {
+		return nil, fmt.Errorf("reading %s: %v", lpkg.ExportFile, err)
+	}
+
+	// Build the view.
+	//
+	// The gcexportdata machinery has no concept of package ID.
+	// It identifies packages by their PkgPath, which although not
+	// globally unique is unique within the scope of one invocation
+	// of the linker, type-checker, or gcexportdata.
+	//
+	// So, we must build a PkgPath-keyed view of the global
+	// (conceptually ID-keyed) cache of packages and pass it to
+	// gcexportdata. The view must contain every existing
+	// package that might possibly be mentioned by the
+	// current package---its transitive closure.
+	//
+	// In loadPackage, we unconditionally create a types.Package for
+	// each dependency so that export data loading does not
+	// create new ones.
+	//
+	// TODO(adonovan): it would be simpler and more efficient
+	// if the export data machinery invoked a callback to
+	// get-or-create a package instead of a map.
+	//
+	view := make(map[string]*types.Package) // view seen by gcexportdata
+	seen := make(map[*loaderPackage]bool)   // all visited packages
+	var visit func(pkgs map[string]*Package)
+	visit = func(pkgs map[string]*Package) {
+		for _, p := range pkgs {
+			lpkg := ld.pkgs[p.ID]
+			if !seen[lpkg] {
+				seen[lpkg] = true
+				view[lpkg.PkgPath] = lpkg.Types
+				visit(lpkg.Imports)
+			}
+		}
+	}
+	visit(lpkg.Imports)
+
+	viewLen := len(view) + 1 // adding the self package
+	// Parse the export data.
+	// (May modify incomplete packages in view but not create new ones.)
+	tpkg, err := gcexportdata.Read(r, ld.Fset, view, lpkg.PkgPath)
+	if err != nil {
+		return nil, fmt.Errorf("reading %s: %v", lpkg.ExportFile, err)
+	}
+	if viewLen != len(view) {
+		log.Fatalf("Unexpected package creation during export data loading")
+	}
+
+	lpkg.Types = tpkg
+	lpkg.IllTyped = false
+
+	return tpkg, nil
+}
+
+func usesExportData(cfg *Config) bool {
+	return cfg.Mode&NeedExportsFile != 0 ||
+		// If NeedTypes but not NeedTypesInfo we won't typecheck using sources, so we need export data.
+		(cfg.Mode&NeedTypes != 0 && cfg.Mode&NeedTypesInfo == 0) ||
+		// If NeedTypesInfo but not NeedDeps, we're typechecking a package using its sources plus its dependencies' export data
+		(cfg.Mode&NeedTypesInfo != 0 && cfg.Mode&NeedDeps == 0)
+}
diff --git a/vendor/golang.org/x/tools/go/packages/visit.go b/vendor/golang.org/x/tools/go/packages/visit.go
new file mode 100644
index 0000000000..b13cb081fc
--- /dev/null
+++ b/vendor/golang.org/x/tools/go/packages/visit.go
@@ -0,0 +1,55 @@
+package packages
+
+import (
+	"fmt"
+	"os"
+	"sort"
+)
+
+// Visit visits all the packages in the import graph whose roots are
+// pkgs, calling the optional pre function the first time each package
+// is encountered (preorder), and the optional post function after a
+// package's dependencies have been visited (postorder).
+// The boolean result of pre(pkg) determines whether
+// the imports of package pkg are visited.
+func Visit(pkgs []*Package, pre func(*Package) bool, post func(*Package)) {
+	seen := make(map[*Package]bool)
+	var visit func(*Package)
+	visit = func(pkg *Package) {
+		if !seen[pkg] {
+			seen[pkg] = true
+
+			if pre == nil || pre(pkg) {
+				paths := make([]string, 0, len(pkg.Imports))
+				for path := range pkg.Imports {
+					paths = append(paths, path)
+				}
+				sort.Strings(paths) // Imports is a map, this makes visit stable
+				for _, path := range paths {
+					visit(pkg.Imports[path])
+				}
+			}
+
+			if post != nil {
+				post(pkg)
+			}
+		}
+	}
+	for _, pkg := range pkgs {
+		visit(pkg)
+	}
+}
+
+// PrintErrors prints to os.Stderr the accumulated errors of all
+// packages in the import graph rooted at pkgs, dependencies first.
+// PrintErrors returns the number of errors printed.
+func PrintErrors(pkgs []*Package) int {
+	var n int
+	Visit(pkgs, nil, func(pkg *Package) {
+		for _, err := range pkg.Errors {
+			fmt.Fprintln(os.Stderr, err)
+			n++
+		}
+	})
+	return n
+}
diff --git a/vendor/golang.org/x/tools/imports/forward.go b/vendor/golang.org/x/tools/imports/forward.go
new file mode 100644
index 0000000000..eef25969de
--- /dev/null
+++ b/vendor/golang.org/x/tools/imports/forward.go
@@ -0,0 +1,62 @@
+// Package imports implements a Go pretty-printer (like package "go/format")
+// that also adds or removes import statements as necessary.
+package imports // import "golang.org/x/tools/imports"
+
+import (
+	"go/build"
+
+	intimp "golang.org/x/tools/internal/imports"
+)
+
+// Options specifies options for processing files.
+type Options struct {
+	Fragment  bool // Accept fragment of a source file (no package statement)
+	AllErrors bool // Report all errors (not just the first 10 on different lines)
+
+	Comments  bool // Print comments (true if nil *Options provided)
+	TabIndent bool // Use tabs for indent (true if nil *Options provided)
+	TabWidth  int  // Tab width (8 if nil *Options provided)
+
+	FormatOnly bool // Disable the insertion and deletion of imports
+}
+
+// Debug controls verbose logging.
+var Debug = false
+
+// LocalPrefix is a comma-separated string of import path prefixes, which, if
+// set, instructs Process to sort the import paths with the given prefixes
+// into another group after 3rd-party packages.
+var LocalPrefix string
+
+// Process formats and adjusts imports for the provided file.
+// If opt is nil the defaults are used.
+//
+// Note that filename's directory influences which imports can be chosen,
+// so it is important that filename be accurate.
+// To process data ``as if'' it were in filename, pass the data as a non-nil src.
+func Process(filename string, src []byte, opt *Options) ([]byte, error) {
+	if opt == nil {
+		opt = &Options{Comments: true, TabIndent: true, TabWidth: 8}
+	}
+	intopt := &intimp.Options{
+		Env: &intimp.ProcessEnv{
+			GOPATH:      build.Default.GOPATH,
+			GOROOT:      build.Default.GOROOT,
+			Debug:       Debug,
+			LocalPrefix: LocalPrefix,
+		},
+		AllErrors:  opt.AllErrors,
+		Comments:   opt.Comments,
+		FormatOnly: opt.FormatOnly,
+		Fragment:   opt.Fragment,
+		TabIndent:  opt.TabIndent,
+		TabWidth:   opt.TabWidth,
+	}
+	return intimp.Process(filename, src, intopt)
+}
+
+// VendorlessPath returns the devendorized version of the import path ipath.
+// For example, VendorlessPath("foo/bar/vendor/a/b") returns "a/b".
+func VendorlessPath(ipath string) string {
+	return intimp.VendorlessPath(ipath)
+}
diff --git a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk.go b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk.go
new file mode 100644
index 0000000000..7219c8e9ff
--- /dev/null
+++ b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk.go
@@ -0,0 +1,196 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package fastwalk provides a faster version of filepath.Walk for file system
+// scanning tools.
+package fastwalk
+
+import (
+	"errors"
+	"os"
+	"path/filepath"
+	"runtime"
+	"sync"
+)
+
+// TraverseLink is used as a return value from WalkFuncs to indicate that the
+// symlink named in the call may be traversed.
+var TraverseLink = errors.New("fastwalk: traverse symlink, assuming target is a directory")
+
+// SkipFiles is a used as a return value from WalkFuncs to indicate that the
+// callback should not be called for any other files in the current directory.
+// Child directories will still be traversed.
+var SkipFiles = errors.New("fastwalk: skip remaining files in directory")
+
+// Walk is a faster implementation of filepath.Walk.
+//
+// filepath.Walk's design necessarily calls os.Lstat on each file,
+// even if the caller needs less info.
+// Many tools need only the type of each file.
+// On some platforms, this information is provided directly by the readdir
+// system call, avoiding the need to stat each file individually.
+// fastwalk_unix.go contains a fork of the syscall routines.
+//
+// See golang.org/issue/16399
+//
+// Walk walks the file tree rooted at root, calling walkFn for
+// each file or directory in the tree, including root.
+//
+// If fastWalk returns filepath.SkipDir, the directory is skipped.
+//
+// Unlike filepath.Walk:
+//   * file stat calls must be done by the user.
+//     The only provided metadata is the file type, which does not include
+//     any permission bits.
+//   * multiple goroutines stat the filesystem concurrently. The provided
+//     walkFn must be safe for concurrent use.
+//   * fastWalk can follow symlinks if walkFn returns the TraverseLink
+//     sentinel error. It is the walkFn's responsibility to prevent
+//     fastWalk from going into symlink cycles.
+func Walk(root string, walkFn func(path string, typ os.FileMode) error) error {
+	// TODO(bradfitz): make numWorkers configurable? We used a
+	// minimum of 4 to give the kernel more info about multiple
+	// things we want, in hopes its I/O scheduling can take
+	// advantage of that. Hopefully most are in cache. Maybe 4 is
+	// even too low of a minimum. Profile more.
+	numWorkers := 4
+	if n := runtime.NumCPU(); n > numWorkers {
+		numWorkers = n
+	}
+
+	// Make sure to wait for all workers to finish, otherwise
+	// walkFn could still be called after returning. This Wait call
+	// runs after close(e.donec) below.
+	var wg sync.WaitGroup
+	defer wg.Wait()
+
+	w := &walker{
+		fn:       walkFn,
+		enqueuec: make(chan walkItem, numWorkers), // buffered for performance
+		workc:    make(chan walkItem, numWorkers), // buffered for performance
+		donec:    make(chan struct{}),
+
+		// buffered for correctness & not leaking goroutines:
+		resc: make(chan error, numWorkers),
+	}
+	defer close(w.donec)
+
+	for i := 0; i < numWorkers; i++ {
+		wg.Add(1)
+		go w.doWork(&wg)
+	}
+	todo := []walkItem{{dir: root}}
+	out := 0
+	for {
+		workc := w.workc
+		var workItem walkItem
+		if len(todo) == 0 {
+			workc = nil
+		} else {
+			workItem = todo[len(todo)-1]
+		}
+		select {
+		case workc <- workItem:
+			todo = todo[:len(todo)-1]
+			out++
+		case it := <-w.enqueuec:
+			todo = append(todo, it)
+		case err := <-w.resc:
+			out--
+			if err != nil {
+				return err
+			}
+			if out == 0 && len(todo) == 0 {
+				// It's safe to quit here, as long as the buffered
+				// enqueue channel isn't also readable, which might
+				// happen if the worker sends both another unit of
+				// work and its result before the other select was
+				// scheduled and both w.resc and w.enqueuec were
+				// readable.
+				select {
+				case it := <-w.enqueuec:
+					todo = append(todo, it)
+				default:
+					return nil
+				}
+			}
+		}
+	}
+}
+
+// doWork reads directories as instructed (via workc) and runs the
+// user's callback function.
+func (w *walker) doWork(wg *sync.WaitGroup) {
+	defer wg.Done()
+	for {
+		select {
+		case <-w.donec:
+			return
+		case it := <-w.workc:
+			select {
+			case <-w.donec:
+				return
+			case w.resc <- w.walk(it.dir, !it.callbackDone):
+			}
+		}
+	}
+}
+
+type walker struct {
+	fn func(path string, typ os.FileMode) error
+
+	donec    chan struct{} // closed on fastWalk's return
+	workc    chan walkItem // to workers
+	enqueuec chan walkItem // from workers
+	resc     chan error    // from workers
+}
+
+type walkItem struct {
+	dir          string
+	callbackDone bool // callback already called; don't do it again
+}
+
+func (w *walker) enqueue(it walkItem) {
+	select {
+	case w.enqueuec <- it:
+	case <-w.donec:
+	}
+}
+
+func (w *walker) onDirEnt(dirName, baseName string, typ os.FileMode) error {
+	joined := dirName + string(os.PathSeparator) + baseName
+	if typ == os.ModeDir {
+		w.enqueue(walkItem{dir: joined})
+		return nil
+	}
+
+	err := w.fn(joined, typ)
+	if typ == os.ModeSymlink {
+		if err == TraverseLink {
+			// Set callbackDone so we don't call it twice for both the
+			// symlink-as-symlink and the symlink-as-directory later:
+			w.enqueue(walkItem{dir: joined, callbackDone: true})
+			return nil
+		}
+		if err == filepath.SkipDir {
+			// Permit SkipDir on symlinks too.
+			return nil
+		}
+	}
+	return err
+}
+
+func (w *walker) walk(root string, runUserCallback bool) error {
+	if runUserCallback {
+		err := w.fn(root, os.ModeDir)
+		if err == filepath.SkipDir {
+			return nil
+		}
+		if err != nil {
+			return err
+		}
+	}
+
+	return readDir(root, w.onDirEnt)
+}
diff --git a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_fileno.go b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_fileno.go
new file mode 100644
index 0000000000..ccffec5adc
--- /dev/null
+++ b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_fileno.go
@@ -0,0 +1,13 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build freebsd openbsd netbsd
+
+package fastwalk
+
+import "syscall"
+
+func direntInode(dirent *syscall.Dirent) uint64 {
+	return uint64(dirent.Fileno)
+}
diff --git a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_ino.go b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_ino.go
new file mode 100644
index 0000000000..ab7fbc0a9a
--- /dev/null
+++ b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_ino.go
@@ -0,0 +1,14 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build linux darwin
+// +build !appengine
+
+package fastwalk
+
+import "syscall"
+
+func direntInode(dirent *syscall.Dirent) uint64 {
+	return uint64(dirent.Ino)
+}
diff --git a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_namlen_bsd.go b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_namlen_bsd.go
new file mode 100644
index 0000000000..a3b26a7bae
--- /dev/null
+++ b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_namlen_bsd.go
@@ -0,0 +1,13 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin freebsd openbsd netbsd
+
+package fastwalk
+
+import "syscall"
+
+func direntNamlen(dirent *syscall.Dirent) uint64 {
+	return uint64(dirent.Namlen)
+}
diff --git a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_namlen_linux.go b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_namlen_linux.go
new file mode 100644
index 0000000000..e880d358b1
--- /dev/null
+++ b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_namlen_linux.go
@@ -0,0 +1,29 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build linux
+// +build !appengine
+
+package fastwalk
+
+import (
+	"bytes"
+	"syscall"
+	"unsafe"
+)
+
+func direntNamlen(dirent *syscall.Dirent) uint64 {
+	const fixedHdr = uint16(unsafe.Offsetof(syscall.Dirent{}.Name))
+	nameBuf := (*[unsafe.Sizeof(dirent.Name)]byte)(unsafe.Pointer(&dirent.Name[0]))
+	const nameBufLen = uint16(len(nameBuf))
+	limit := dirent.Reclen - fixedHdr
+	if limit > nameBufLen {
+		limit = nameBufLen
+	}
+	nameLen := bytes.IndexByte(nameBuf[:limit], 0)
+	if nameLen < 0 {
+		panic("failed to find terminating 0 byte in dirent")
+	}
+	return uint64(nameLen)
+}
diff --git a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_portable.go b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_portable.go
new file mode 100644
index 0000000000..a906b87595
--- /dev/null
+++ b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_portable.go
@@ -0,0 +1,37 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build appengine !linux,!darwin,!freebsd,!openbsd,!netbsd
+
+package fastwalk
+
+import (
+	"io/ioutil"
+	"os"
+)
+
+// readDir calls fn for each directory entry in dirName.
+// It does not descend into directories or follow symlinks.
+// If fn returns a non-nil error, readDir returns with that error
+// immediately.
+func readDir(dirName string, fn func(dirName, entName string, typ os.FileMode) error) error {
+	fis, err := ioutil.ReadDir(dirName)
+	if err != nil {
+		return err
+	}
+	skipFiles := false
+	for _, fi := range fis {
+		if fi.Mode().IsRegular() && skipFiles {
+			continue
+		}
+		if err := fn(dirName, fi.Name(), fi.Mode()&os.ModeType); err != nil {
+			if err == SkipFiles {
+				skipFiles = true
+				continue
+			}
+			return err
+		}
+	}
+	return nil
+}
diff --git a/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_unix.go b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_unix.go
new file mode 100644
index 0000000000..3369b1a0b2
--- /dev/null
+++ b/vendor/golang.org/x/tools/internal/fastwalk/fastwalk_unix.go
@@ -0,0 +1,127 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build linux darwin freebsd openbsd netbsd
+// +build !appengine
+
+package fastwalk
+
+import (
+	"fmt"
+	"os"
+	"syscall"
+	"unsafe"
+)
+
+const blockSize = 8 << 10
+
+// unknownFileMode is a sentinel (and bogus) os.FileMode
+// value used to represent a syscall.DT_UNKNOWN Dirent.Type.
+const unknownFileMode os.FileMode = os.ModeNamedPipe | os.ModeSocket | os.ModeDevice
+
+func readDir(dirName string, fn func(dirName, entName string, typ os.FileMode) error) error {
+	fd, err := syscall.Open(dirName, 0, 0)
+	if err != nil {
+		return &os.PathError{Op: "open", Path: dirName, Err: err}
+	}
+	defer syscall.Close(fd)
+
+	// The buffer must be at least a block long.
+	buf := make([]byte, blockSize) // stack-allocated; doesn't escape
+	bufp := 0                      // starting read position in buf
+	nbuf := 0                      // end valid data in buf
+	skipFiles := false
+	for {
+		if bufp >= nbuf {
+			bufp = 0
+			nbuf, err = syscall.ReadDirent(fd, buf)
+			if err != nil {
+				return os.NewSyscallError("readdirent", err)
+			}
+			if nbuf <= 0 {
+				return nil
+			}
+		}
+		consumed, name, typ := parseDirEnt(buf[bufp:nbuf])
+		bufp += consumed
+		if name == "" || name == "." || name == ".." {
+			continue
+		}
+		// Fallback for filesystems (like old XFS) that don't
+		// support Dirent.Type and have DT_UNKNOWN (0) there
+		// instead.
+		if typ == unknownFileMode {
+			fi, err := os.Lstat(dirName + "/" + name)
+			if err != nil {
+				// It got deleted in the meantime.
+				if os.IsNotExist(err) {
+					continue
+				}
+				return err
+			}
+			typ = fi.Mode() & os.ModeType
+		}
+		if skipFiles && typ.IsRegular() {
+			continue
+		}
+		if err := fn(dirName, name, typ); err != nil {
+			if err == SkipFiles {
+				skipFiles = true
+				continue
+			}
+			return err
+		}
+	}
+}
+
+func parseDirEnt(buf []byte) (consumed int, name string, typ os.FileMode) {
+	// golang.org/issue/15653
+	dirent := (*syscall.Dirent)(unsafe.Pointer(&buf[0]))
+	if v := unsafe.Offsetof(dirent.Reclen) + unsafe.Sizeof(dirent.Reclen); uintptr(len(buf)) < v {
+		panic(fmt.Sprintf("buf size of %d smaller than dirent header size %d", len(buf), v))
+	}
+	if len(buf) < int(dirent.Reclen) {
+		panic(fmt.Sprintf("buf size %d < record length %d", len(buf), dirent.Reclen))
+	}
+	consumed = int(dirent.Reclen)
+	if direntInode(dirent) == 0 { // File absent in directory.
+		return
+	}
+	switch dirent.Type {
+	case syscall.DT_REG:
+		typ = 0
+	case syscall.DT_DIR:
+		typ = os.ModeDir
+	case syscall.DT_LNK:
+		typ = os.ModeSymlink
+	case syscall.DT_BLK:
+		typ = os.ModeDevice
+	case syscall.DT_FIFO:
+		typ = os.ModeNamedPipe
+	case syscall.DT_SOCK:
+		typ = os.ModeSocket
+	case syscall.DT_UNKNOWN:
+		typ = unknownFileMode
+	default:
+		// Skip weird things.
+		// It's probably a DT_WHT (http://lwn.net/Articles/325369/)
+		// or something. Revisit if/when this package is moved outside
+		// of goimports. goimports only cares about regular files,
+		// symlinks, and directories.
+		return
+	}
+
+	nameBuf := (*[unsafe.Sizeof(dirent.Name)]byte)(unsafe.Pointer(&dirent.Name[0]))
+	nameLen := direntNamlen(dirent)
+
+	// Special cases for common things:
+	if nameLen == 1 && nameBuf[0] == '.' {
+		name = "."
+	} else if nameLen == 2 && nameBuf[0] == '.' && nameBuf[1] == '.' {
+		name = ".."
+	} else {
+		name = string(nameBuf[:nameLen])
+	}
+	return
+}
diff --git a/vendor/golang.org/x/tools/internal/gopathwalk/walk.go b/vendor/golang.org/x/tools/internal/gopathwalk/walk.go
new file mode 100644
index 0000000000..60eb67b697
--- /dev/null
+++ b/vendor/golang.org/x/tools/internal/gopathwalk/walk.go
@@ -0,0 +1,268 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package gopathwalk is like filepath.Walk but specialized for finding Go
+// packages, particularly in $GOPATH and $GOROOT.
+package gopathwalk
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"go/build"
+	"io/ioutil"
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"golang.org/x/tools/internal/fastwalk"
+)
+
+// Options controls the behavior of a Walk call.
+type Options struct {
+	Debug          bool // Enable debug logging
+	ModulesEnabled bool // Search module caches. Also disables legacy goimports ignore rules.
+}
+
+// RootType indicates the type of a Root.
+type RootType int
+
+const (
+	RootUnknown RootType = iota
+	RootGOROOT
+	RootGOPATH
+	RootCurrentModule
+	RootModuleCache
+	RootOther
+)
+
+// A Root is a starting point for a Walk.
+type Root struct {
+	Path string
+	Type RootType
+}
+
+// SrcDirsRoots returns the roots from build.Default.SrcDirs(). Not modules-compatible.
+func SrcDirsRoots(ctx *build.Context) []Root {
+	var roots []Root
+	roots = append(roots, Root{filepath.Join(ctx.GOROOT, "src"), RootGOROOT})
+	for _, p := range filepath.SplitList(ctx.GOPATH) {
+		roots = append(roots, Root{filepath.Join(p, "src"), RootGOPATH})
+	}
+	return roots
+}
+
+// Walk walks Go source directories ($GOROOT, $GOPATH, etc) to find packages.
+// For each package found, add will be called (concurrently) with the absolute
+// paths of the containing source directory and the package directory.
+// add will be called concurrently.
+func Walk(roots []Root, add func(root Root, dir string), opts Options) {
+	WalkSkip(roots, add, func(Root, string) bool { return false }, opts)
+}
+
+// WalkSkip walks Go source directories ($GOROOT, $GOPATH, etc) to find packages.
+// For each package found, add will be called (concurrently) with the absolute
+// paths of the containing source directory and the package directory.
+// For each directory that will be scanned, skip will be called (concurrently)
+// with the absolute paths of the containing source directory and the directory.
+// If skip returns false on a directory it will be processed.
+// add will be called concurrently.
+// skip will be called concurrently.
+func WalkSkip(roots []Root, add func(root Root, dir string), skip func(root Root, dir string) bool, opts Options) {
+	for _, root := range roots {
+		walkDir(root, add, skip, opts)
+	}
+}
+
+func walkDir(root Root, add func(Root, string), skip func(root Root, dir string) bool, opts Options) {
+	if _, err := os.Stat(root.Path); os.IsNotExist(err) {
+		if opts.Debug {
+			log.Printf("skipping nonexistent directory: %v", root.Path)
+		}
+		return
+	}
+	if opts.Debug {
+		log.Printf("scanning %s", root.Path)
+	}
+	w := &walker{
+		root: root,
+		add:  add,
+		skip: skip,
+		opts: opts,
+	}
+	w.init()
+	if err := fastwalk.Walk(root.Path, w.walk); err != nil {
+		log.Printf("gopathwalk: scanning directory %v: %v", root.Path, err)
+	}
+
+	if opts.Debug {
+		log.Printf("scanned %s", root.Path)
+	}
+}
+
+// walker is the callback for fastwalk.Walk.
+type walker struct {
+	root Root                    // The source directory to scan.
+	add  func(Root, string)      // The callback that will be invoked for every possible Go package dir.
+	skip func(Root, string) bool // The callback that will be invoked for every dir. dir is skipped if it returns true.
+	opts Options                 // Options passed to Walk by the user.
+
+	ignoredDirs []os.FileInfo // The ignored directories, loaded from .goimportsignore files.
+}
+
+// init initializes the walker based on its Options.
+func (w *walker) init() {
+	var ignoredPaths []string
+	if w.root.Type == RootModuleCache {
+		ignoredPaths = []string{"cache"}
+	}
+	if !w.opts.ModulesEnabled && w.root.Type == RootGOPATH {
+		ignoredPaths = w.getIgnoredDirs(w.root.Path)
+		ignoredPaths = append(ignoredPaths, "v", "mod")
+	}
+
+	for _, p := range ignoredPaths {
+		full := filepath.Join(w.root.Path, p)
+		if fi, err := os.Stat(full); err == nil {
+			w.ignoredDirs = append(w.ignoredDirs, fi)
+			if w.opts.Debug {
+				log.Printf("Directory added to ignore list: %s", full)
+			}
+		} else if w.opts.Debug {
+			log.Printf("Error statting ignored directory: %v", err)
+		}
+	}
+}
+
+// getIgnoredDirs reads an optional config file at <path>/.goimportsignore
+// of relative directories to ignore when scanning for go files.
+// The provided path is one of the $GOPATH entries with "src" appended.
+func (w *walker) getIgnoredDirs(path string) []string {
+	file := filepath.Join(path, ".goimportsignore")
+	slurp, err := ioutil.ReadFile(file)
+	if w.opts.Debug {
+		if err != nil {
+			log.Print(err)
+		} else {
+			log.Printf("Read %s", file)
+		}
+	}
+	if err != nil {
+		return nil
+	}
+
+	var ignoredDirs []string
+	bs := bufio.NewScanner(bytes.NewReader(slurp))
+	for bs.Scan() {
+		line := strings.TrimSpace(bs.Text())
+		if line == "" || strings.HasPrefix(line, "#") {
+			continue
+		}
+		ignoredDirs = append(ignoredDirs, line)
+	}
+	return ignoredDirs
+}
+
+func (w *walker) shouldSkipDir(fi os.FileInfo, dir string) bool {
+	for _, ignoredDir := range w.ignoredDirs {
+		if os.SameFile(fi, ignoredDir) {
+			return true
+		}
+	}
+	if w.skip != nil {
+		// Check with the user specified callback.
+		return w.skip(w.root, dir)
+	}
+	return false
+}
+
+func (w *walker) walk(path string, typ os.FileMode) error {
+	dir := filepath.Dir(path)
+	if typ.IsRegular() {
+		if dir == w.root.Path && (w.root.Type == RootGOROOT || w.root.Type == RootGOPATH) {
+			// Doesn't make sense to have regular files
+			// directly in your $GOPATH/src or $GOROOT/src.
+			return fastwalk.SkipFiles
+		}
+		if !strings.HasSuffix(path, ".go") {
+			return nil
+		}
+
+		w.add(w.root, dir)
+		return fastwalk.SkipFiles
+	}
+	if typ == os.ModeDir {
+		base := filepath.Base(path)
+		if base == "" || base[0] == '.' || base[0] == '_' ||
+			base == "testdata" ||
+			(w.root.Type == RootGOROOT && w.opts.ModulesEnabled && base == "vendor") ||
+			(!w.opts.ModulesEnabled && base == "node_modules") {
+			return filepath.SkipDir
+		}
+		fi, err := os.Lstat(path)
+		if err == nil && w.shouldSkipDir(fi, path) {
+			return filepath.SkipDir
+		}
+		return nil
+	}
+	if typ == os.ModeSymlink {
+		base := filepath.Base(path)
+		if strings.HasPrefix(base, ".#") {
+			// Emacs noise.
+			return nil
+		}
+		fi, err := os.Lstat(path)
+		if err != nil {
+			// Just ignore it.
+			return nil
+		}
+		if w.shouldTraverse(dir, fi) {
+			return fastwalk.TraverseLink
+		}
+	}
+	return nil
+}
+
+// shouldTraverse reports whether the symlink fi, found in dir,
+// should be followed.  It makes sure symlinks were never visited
+// before to avoid symlink loops.
+func (w *walker) shouldTraverse(dir string, fi os.FileInfo) bool {
+	path := filepath.Join(dir, fi.Name())
+	target, err := filepath.EvalSymlinks(path)
+	if err != nil {
+		return false
+	}
+	ts, err := os.Stat(target)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		return false
+	}
+	if !ts.IsDir() {
+		return false
+	}
+	if w.shouldSkipDir(ts, dir) {
+		return false
+	}
+	// Check for symlink loops by statting each directory component
+	// and seeing if any are the same file as ts.
+	for {
+		parent := filepath.Dir(path)
+		if parent == path {
+			// Made it to the root without seeing a cycle.
+			// Use this symlink.
+			return true
+		}
+		parentInfo, err := os.Stat(parent)
+		if err != nil {
+			return false
+		}
+		if os.SameFile(ts, parentInfo) {
+			// Cycle. Don't traverse.
+			return false
+		}
+		path = parent
+	}
+
+}
diff --git a/vendor/golang.org/x/tools/internal/imports/fix.go b/vendor/golang.org/x/tools/internal/imports/fix.go
new file mode 100644
index 0000000000..bcfbb07ed8
--- /dev/null
+++ b/vendor/golang.org/x/tools/internal/imports/fix.go
@@ -0,0 +1,1385 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package imports
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"go/ast"
+	"go/build"
+	"go/parser"
+	"go/token"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path"
+	"path/filepath"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+	"unicode"
+	"unicode/utf8"
+
+	"golang.org/x/tools/go/ast/astutil"
+	"golang.org/x/tools/go/packages"
+	"golang.org/x/tools/internal/gopathwalk"
+)
+
+// importToGroup is a list of functions which map from an import path to
+// a group number.
+var importToGroup = []func(env *ProcessEnv, importPath string) (num int, ok bool){
+	func(env *ProcessEnv, importPath string) (num int, ok bool) {
+		if env.LocalPrefix == "" {
+			return
+		}
+		for _, p := range strings.Split(env.LocalPrefix, ",") {
+			if strings.HasPrefix(importPath, p) || strings.TrimSuffix(p, "/") == importPath {
+				return 3, true
+			}
+		}
+		return
+	},
+	func(_ *ProcessEnv, importPath string) (num int, ok bool) {
+		if strings.HasPrefix(importPath, "appengine") {
+			return 2, true
+		}
+		return
+	},
+	func(_ *ProcessEnv, importPath string) (num int, ok bool) {
+		if strings.Contains(importPath, ".") {
+			return 1, true
+		}
+		return
+	},
+}
+
+func importGroup(env *ProcessEnv, importPath string) int {
+	for _, fn := range importToGroup {
+		if n, ok := fn(env, importPath); ok {
+			return n
+		}
+	}
+	return 0
+}
+
+type ImportFixType int
+
+const (
+	AddImport ImportFixType = iota
+	DeleteImport
+	SetImportName
+)
+
+type ImportFix struct {
+	// StmtInfo represents the import statement this fix will add, remove, or change.
+	StmtInfo ImportInfo
+	// IdentName is the identifier that this fix will add or remove.
+	IdentName string
+	// FixType is the type of fix this is (AddImport, DeleteImport, SetImportName).
+	FixType ImportFixType
+}
+
+// An ImportInfo represents a single import statement.
+type ImportInfo struct {
+	ImportPath string // import path, e.g. "crypto/rand".
+	Name       string // import name, e.g. "crand", or "" if none.
+}
+
+// A packageInfo represents what's known about a package.
+type packageInfo struct {
+	name    string          // real package name, if known.
+	exports map[string]bool // known exports.
+}
+
+// parseOtherFiles parses all the Go files in srcDir except filename, including
+// test files if filename looks like a test.
+func parseOtherFiles(fset *token.FileSet, srcDir, filename string) []*ast.File {
+	// This could use go/packages but it doesn't buy much, and it fails
+	// with https://golang.org/issue/26296 in LoadFiles mode in some cases.
+	considerTests := strings.HasSuffix(filename, "_test.go")
+
+	fileBase := filepath.Base(filename)
+	packageFileInfos, err := ioutil.ReadDir(srcDir)
+	if err != nil {
+		return nil
+	}
+
+	var files []*ast.File
+	for _, fi := range packageFileInfos {
+		if fi.Name() == fileBase || !strings.HasSuffix(fi.Name(), ".go") {
+			continue
+		}
+		if !considerTests && strings.HasSuffix(fi.Name(), "_test.go") {
+			continue
+		}
+
+		f, err := parser.ParseFile(fset, filepath.Join(srcDir, fi.Name()), nil, 0)
+		if err != nil {
+			continue
+		}
+
+		files = append(files, f)
+	}
+
+	return files
+}
+
+// addGlobals puts the names of package vars into the provided map.
+func addGlobals(f *ast.File, globals map[string]bool) {
+	for _, decl := range f.Decls {
+		genDecl, ok := decl.(*ast.GenDecl)
+		if !ok {
+			continue
+		}
+
+		for _, spec := range genDecl.Specs {
+			valueSpec, ok := spec.(*ast.ValueSpec)
+			if !ok {
+				continue
+			}
+			globals[valueSpec.Names[0].Name] = true
+		}
+	}
+}
+
+// collectReferences builds a map of selector expressions, from
+// left hand side (X) to a set of right hand sides (Sel).
+func collectReferences(f *ast.File) references {
+	refs := references{}
+
+	var visitor visitFn
+	visitor = func(node ast.Node) ast.Visitor {
+		if node == nil {
+			return visitor
+		}
+		switch v := node.(type) {
+		case *ast.SelectorExpr:
+			xident, ok := v.X.(*ast.Ident)
+			if !ok {
+				break
+			}
+			if xident.Obj != nil {
+				// If the parser can resolve it, it's not a package ref.
+				break
+			}
+			if !ast.IsExported(v.Sel.Name) {
+				// Whatever this is, it's not exported from a package.
+				break
+			}
+			pkgName := xident.Name
+			r := refs[pkgName]
+			if r == nil {
+				r = make(map[string]bool)
+				refs[pkgName] = r
+			}
+			r[v.Sel.Name] = true
+		}
+		return visitor
+	}
+	ast.Walk(visitor, f)
+	return refs
+}
+
+// collectImports returns all the imports in f.
+// Unnamed imports (., _) and "C" are ignored.
+func collectImports(f *ast.File) []*ImportInfo {
+	var imports []*ImportInfo
+	for _, imp := range f.Imports {
+		var name string
+		if imp.Name != nil {
+			name = imp.Name.Name
+		}
+		if imp.Path.Value == `"C"` || name == "_" || name == "." {
+			continue
+		}
+		path := strings.Trim(imp.Path.Value, `"`)
+		imports = append(imports, &ImportInfo{
+			Name:       name,
+			ImportPath: path,
+		})
+	}
+	return imports
+}
+
+// findMissingImport searches pass's candidates for an import that provides
+// pkg, containing all of syms.
+func (p *pass) findMissingImport(pkg string, syms map[string]bool) *ImportInfo {
+	for _, candidate := range p.candidates {
+		pkgInfo, ok := p.knownPackages[candidate.ImportPath]
+		if !ok {
+			continue
+		}
+		if p.importIdentifier(candidate) != pkg {
+			continue
+		}
+
+		allFound := true
+		for right := range syms {
+			if !pkgInfo.exports[right] {
+				allFound = false
+				break
+			}
+		}
+
+		if allFound {
+			return candidate
+		}
+	}
+	return nil
+}
+
+// references is set of references found in a Go file. The first map key is the
+// left hand side of a selector expression, the second key is the right hand
+// side, and the value should always be true.
+type references map[string]map[string]bool
+
+// A pass contains all the inputs and state necessary to fix a file's imports.
+// It can be modified in some ways during use; see comments below.
+type pass struct {
+	// Inputs. These must be set before a call to load, and not modified after.
+	fset                 *token.FileSet // fset used to parse f and its siblings.
+	f                    *ast.File      // the file being fixed.
+	srcDir               string         // the directory containing f.
+	env                  *ProcessEnv    // the environment to use for go commands, etc.
+	loadRealPackageNames bool           // if true, load package names from disk rather than guessing them.
+	otherFiles           []*ast.File    // sibling files.
+
+	// Intermediate state, generated by load.
+	existingImports map[string]*ImportInfo
+	allRefs         references
+	missingRefs     references
+
+	// Inputs to fix. These can be augmented between successive fix calls.
+	lastTry       bool                    // indicates that this is the last call and fix should clean up as best it can.
+	candidates    []*ImportInfo           // candidate imports in priority order.
+	knownPackages map[string]*packageInfo // information about all known packages.
+}
+
+// loadPackageNames saves the package names for everything referenced by imports.
+func (p *pass) loadPackageNames(imports []*ImportInfo) error {
+	if p.env.Debug {
+		p.env.Logf("loading package names for %v packages", len(imports))
+		defer func() {
+			p.env.Logf("done loading package names for %v packages", len(imports))
+		}()
+	}
+	var unknown []string
+	for _, imp := range imports {
+		if _, ok := p.knownPackages[imp.ImportPath]; ok {
+			continue
+		}
+		unknown = append(unknown, imp.ImportPath)
+	}
+
+	names, err := p.env.GetResolver().loadPackageNames(unknown, p.srcDir)
+	if err != nil {
+		return err
+	}
+
+	for path, name := range names {
+		p.knownPackages[path] = &packageInfo{
+			name:    name,
+			exports: map[string]bool{},
+		}
+	}
+	return nil
+}
+
+// importIdentifier returns the identifier that imp will introduce. It will
+// guess if the package name has not been loaded, e.g. because the source
+// is not available.
+func (p *pass) importIdentifier(imp *ImportInfo) string {
+	if imp.Name != "" {
+		return imp.Name
+	}
+	known := p.knownPackages[imp.ImportPath]
+	if known != nil && known.name != "" {
+		return known.name
+	}
+	return importPathToAssumedName(imp.ImportPath)
+}
+
+// load reads in everything necessary to run a pass, and reports whether the
+// file already has all the imports it needs. It fills in p.missingRefs with the
+// file's missing symbols, if any, or removes unused imports if not.
+func (p *pass) load() ([]*ImportFix, bool) {
+	p.knownPackages = map[string]*packageInfo{}
+	p.missingRefs = references{}
+	p.existingImports = map[string]*ImportInfo{}
+
+	// Load basic information about the file in question.
+	p.allRefs = collectReferences(p.f)
+
+	// Load stuff from other files in the same package:
+	// global variables so we know they don't need resolving, and imports
+	// that we might want to mimic.
+	globals := map[string]bool{}
+	for _, otherFile := range p.otherFiles {
+		// Don't load globals from files that are in the same directory
+		// but a different package. Using them to suggest imports is OK.
+		if p.f.Name.Name == otherFile.Name.Name {
+			addGlobals(otherFile, globals)
+		}
+		p.candidates = append(p.candidates, collectImports(otherFile)...)
+	}
+
+	// Resolve all the import paths we've seen to package names, and store
+	// f's imports by the identifier they introduce.
+	imports := collectImports(p.f)
+	if p.loadRealPackageNames {
+		err := p.loadPackageNames(append(imports, p.candidates...))
+		if err != nil {
+			if p.env.Debug {
+				p.env.Logf("loading package names: %v", err)
+			}
+			return nil, false
+		}
+	}
+	for _, imp := range imports {
+		p.existingImports[p.importIdentifier(imp)] = imp
+	}
+
+	// Find missing references.
+	for left, rights := range p.allRefs {
+		if globals[left] {
+			continue
+		}
+		_, ok := p.existingImports[left]
+		if !ok {
+			p.missingRefs[left] = rights
+			continue
+		}
+	}
+	if len(p.missingRefs) != 0 {
+		return nil, false
+	}
+
+	return p.fix()
+}
+
+// fix attempts to satisfy missing imports using p.candidates. If it finds
+// everything, or if p.lastTry is true, it updates fixes to add the imports it found,
+// delete anything unused, and update import names, and returns true.
+func (p *pass) fix() ([]*ImportFix, bool) {
+	// Find missing imports.
+	var selected []*ImportInfo
+	for left, rights := range p.missingRefs {
+		if imp := p.findMissingImport(left, rights); imp != nil {
+			selected = append(selected, imp)
+		}
+	}
+
+	if !p.lastTry && len(selected) != len(p.missingRefs) {
+		return nil, false
+	}
+
+	// Found everything, or giving up. Add the new imports and remove any unused.
+	var fixes []*ImportFix
+	for _, imp := range p.existingImports {
+		// We deliberately ignore globals here, because we can't be sure
+		// they're in the same package. People do things like put multiple
+		// main packages in the same directory, and we don't want to
+		// remove imports if they happen to have the same name as a var in
+		// a different package.
+		if _, ok := p.allRefs[p.importIdentifier(imp)]; !ok {
+			fixes = append(fixes, &ImportFix{
+				StmtInfo:  *imp,
+				IdentName: p.importIdentifier(imp),
+				FixType:   DeleteImport,
+			})
+			continue
+		}
+
+		// An existing import may need to update its import name to be correct.
+		if name := p.importSpecName(imp); name != imp.Name {
+			fixes = append(fixes, &ImportFix{
+				StmtInfo: ImportInfo{
+					Name:       name,
+					ImportPath: imp.ImportPath,
+				},
+				IdentName: p.importIdentifier(imp),
+				FixType:   SetImportName,
+			})
+		}
+	}
+
+	for _, imp := range selected {
+		fixes = append(fixes, &ImportFix{
+			StmtInfo: ImportInfo{
+				Name:       p.importSpecName(imp),
+				ImportPath: imp.ImportPath,
+			},
+			IdentName: p.importIdentifier(imp),
+			FixType:   AddImport,
+		})
+	}
+
+	return fixes, true
+}
+
+// importSpecName gets the import name of imp in the import spec.
+//
+// When the import identifier matches the assumed import name, the import name does
+// not appear in the import spec.
+func (p *pass) importSpecName(imp *ImportInfo) string {
+	// If we did not load the real package names, or the name is already set,
+	// we just return the existing name.
+	if !p.loadRealPackageNames || imp.Name != "" {
+		return imp.Name
+	}
+
+	ident := p.importIdentifier(imp)
+	if ident == importPathToAssumedName(imp.ImportPath) {
+		return "" // ident not needed since the assumed and real names are the same.
+	}
+	return ident
+}
+
+// apply will perform the fixes on f in order.
+func apply(fset *token.FileSet, f *ast.File, fixes []*ImportFix) {
+	for _, fix := range fixes {
+		switch fix.FixType {
+		case DeleteImport:
+			astutil.DeleteNamedImport(fset, f, fix.StmtInfo.Name, fix.StmtInfo.ImportPath)
+		case AddImport:
+			astutil.AddNamedImport(fset, f, fix.StmtInfo.Name, fix.StmtInfo.ImportPath)
+		case SetImportName:
+			// Find the matching import path and change the name.
+			for _, spec := range f.Imports {
+				path := strings.Trim(spec.Path.Value, `"`)
+				if path == fix.StmtInfo.ImportPath {
+					spec.Name = &ast.Ident{
+						Name:    fix.StmtInfo.Name,
+						NamePos: spec.Pos(),
+					}
+				}
+			}
+		}
+	}
+}
+
+// assumeSiblingImportsValid assumes that siblings' use of packages is valid,
+// adding the exports they use.
+func (p *pass) assumeSiblingImportsValid() {
+	for _, f := range p.otherFiles {
+		refs := collectReferences(f)
+		imports := collectImports(f)
+		importsByName := map[string]*ImportInfo{}
+		for _, imp := range imports {
+			importsByName[p.importIdentifier(imp)] = imp
+		}
+		for left, rights := range refs {
+			if imp, ok := importsByName[left]; ok {
+				if _, ok := stdlib[imp.ImportPath]; ok {
+					// We have the stdlib in memory; no need to guess.
+					rights = stdlib[imp.ImportPath]
+				}
+				p.addCandidate(imp, &packageInfo{
+					// no name; we already know it.
+					exports: rights,
+				})
+			}
+		}
+	}
+}
+
+// addCandidate adds a candidate import to p, and merges in the information
+// in pkg.
+func (p *pass) addCandidate(imp *ImportInfo, pkg *packageInfo) {
+	p.candidates = append(p.candidates, imp)
+	if existing, ok := p.knownPackages[imp.ImportPath]; ok {
+		if existing.name == "" {
+			existing.name = pkg.name
+		}
+		for export := range pkg.exports {
+			existing.exports[export] = true
+		}
+	} else {
+		p.knownPackages[imp.ImportPath] = pkg
+	}
+}
+
+// fixImports adds and removes imports from f so that all its references are
+// satisfied and there are no unused imports.
+//
+// This is declared as a variable rather than a function so goimports can
+// easily be extended by adding a file with an init function.
+var fixImports = fixImportsDefault
+
+func fixImportsDefault(fset *token.FileSet, f *ast.File, filename string, env *ProcessEnv) error {
+	fixes, err := getFixes(fset, f, filename, env)
+	if err != nil {
+		return err
+	}
+	apply(fset, f, fixes)
+	return err
+}
+
+// getFixes gets the import fixes that need to be made to f in order to fix the imports.
+// It does not modify the ast.
+func getFixes(fset *token.FileSet, f *ast.File, filename string, env *ProcessEnv) ([]*ImportFix, error) {
+	abs, err := filepath.Abs(filename)
+	if err != nil {
+		return nil, err
+	}
+	srcDir := filepath.Dir(abs)
+	if env.Debug {
+		env.Logf("fixImports(filename=%q), abs=%q, srcDir=%q ...", filename, abs, srcDir)
+	}
+
+	// First pass: looking only at f, and using the naive algorithm to
+	// derive package names from import paths, see if the file is already
+	// complete. We can't add any imports yet, because we don't know
+	// if missing references are actually package vars.
+	p := &pass{fset: fset, f: f, srcDir: srcDir}
+	if fixes, done := p.load(); done {
+		return fixes, nil
+	}
+
+	otherFiles := parseOtherFiles(fset, srcDir, filename)
+
+	// Second pass: add information from other files in the same package,
+	// like their package vars and imports.
+	p.otherFiles = otherFiles
+	if fixes, done := p.load(); done {
+		return fixes, nil
+	}
+
+	// Now we can try adding imports from the stdlib.
+	p.assumeSiblingImportsValid()
+	addStdlibCandidates(p, p.missingRefs)
+	if fixes, done := p.fix(); done {
+		return fixes, nil
+	}
+
+	// Third pass: get real package names where we had previously used
+	// the naive algorithm. This is the first step that will use the
+	// environment, so we provide it here for the first time.
+	p = &pass{fset: fset, f: f, srcDir: srcDir, env: env}
+	p.loadRealPackageNames = true
+	p.otherFiles = otherFiles
+	if fixes, done := p.load(); done {
+		return fixes, nil
+	}
+
+	addStdlibCandidates(p, p.missingRefs)
+	p.assumeSiblingImportsValid()
+	if fixes, done := p.fix(); done {
+		return fixes, nil
+	}
+
+	// Go look for candidates in $GOPATH, etc. We don't necessarily load
+	// the real exports of sibling imports, so keep assuming their contents.
+	if err := addExternalCandidates(p, p.missingRefs, filename); err != nil {
+		return nil, err
+	}
+
+	p.lastTry = true
+	fixes, _ := p.fix()
+	return fixes, nil
+}
+
+// getAllCandidates gets all of the candidates to be imported, regardless of if they are needed.
+func getAllCandidates(filename string, env *ProcessEnv) ([]ImportFix, error) {
+	// TODO(suzmue): scan for additional candidates and filter out
+	// current package.
+
+	// Get the stdlib candidates and sort by import path.
+	var paths []string
+	for importPath := range stdlib {
+		paths = append(paths, importPath)
+	}
+	sort.Strings(paths)
+
+	var imports []ImportFix
+	for _, importPath := range paths {
+		imports = append(imports, ImportFix{
+			StmtInfo: ImportInfo{
+				ImportPath: importPath,
+			},
+			IdentName: path.Base(importPath),
+			FixType:   AddImport,
+		})
+	}
+	return imports, nil
+}
+
+// ProcessEnv contains environment variables and settings that affect the use of
+// the go command, the go/build package, etc.
+type ProcessEnv struct {
+	LocalPrefix string
+	Debug       bool
+
+	// If non-empty, these will be used instead of the
+	// process-wide values.
+	GOPATH, GOROOT, GO111MODULE, GOPROXY, GOFLAGS, GOSUMDB string
+	WorkingDir                                             string
+
+	// If true, use go/packages regardless of the environment.
+	ForceGoPackages bool
+
+	// Logf is the default logger for the ProcessEnv.
+	Logf func(format string, args ...interface{})
+
+	resolver Resolver
+}
+
+func (e *ProcessEnv) env() []string {
+	env := os.Environ()
+	add := func(k, v string) {
+		if v != "" {
+			env = append(env, k+"="+v)
+		}
+	}
+	add("GOPATH", e.GOPATH)
+	add("GOROOT", e.GOROOT)
+	add("GO111MODULE", e.GO111MODULE)
+	add("GOPROXY", e.GOPROXY)
+	add("GOFLAGS", e.GOFLAGS)
+	add("GOSUMDB", e.GOSUMDB)
+	if e.WorkingDir != "" {
+		add("PWD", e.WorkingDir)
+	}
+	return env
+}
+
+func (e *ProcessEnv) GetResolver() Resolver {
+	if e.resolver != nil {
+		return e.resolver
+	}
+	if e.ForceGoPackages {
+		e.resolver = &goPackagesResolver{env: e}
+		return e.resolver
+	}
+
+	out, err := e.invokeGo("env", "GOMOD")
+	if err != nil || len(bytes.TrimSpace(out.Bytes())) == 0 {
+		e.resolver = &gopathResolver{env: e}
+		return e.resolver
+	}
+	e.resolver = &ModuleResolver{env: e}
+	return e.resolver
+}
+
+func (e *ProcessEnv) newPackagesConfig(mode packages.LoadMode) *packages.Config {
+	return &packages.Config{
+		Mode: mode,
+		Dir:  e.WorkingDir,
+		Env:  e.env(),
+	}
+}
+
+func (e *ProcessEnv) buildContext() *build.Context {
+	ctx := build.Default
+	ctx.GOROOT = e.GOROOT
+	ctx.GOPATH = e.GOPATH
+	return &ctx
+}
+
+func (e *ProcessEnv) invokeGo(args ...string) (*bytes.Buffer, error) {
+	cmd := exec.Command("go", args...)
+	stdout := &bytes.Buffer{}
+	stderr := &bytes.Buffer{}
+	cmd.Stdout = stdout
+	cmd.Stderr = stderr
+	cmd.Env = e.env()
+	cmd.Dir = e.WorkingDir
+
+	if e.Debug {
+		defer func(start time.Time) { e.Logf("%s for %v", time.Since(start), cmdDebugStr(cmd)) }(time.Now())
+	}
+	if err := cmd.Run(); err != nil {
+		return nil, fmt.Errorf("running go: %v (stderr:\n%s)", err, stderr)
+	}
+	return stdout, nil
+}
+
+func cmdDebugStr(cmd *exec.Cmd) string {
+	env := make(map[string]string)
+	for _, kv := range cmd.Env {
+		split := strings.Split(kv, "=")
+		k, v := split[0], split[1]
+		env[k] = v
+	}
+
+	return fmt.Sprintf("GOROOT=%v GOPATH=%v GO111MODULE=%v GOPROXY=%v PWD=%v go %v", env["GOROOT"], env["GOPATH"], env["GO111MODULE"], env["GOPROXY"], env["PWD"], cmd.Args)
+}
+
+func addStdlibCandidates(pass *pass, refs references) {
+	add := func(pkg string) {
+		pass.addCandidate(
+			&ImportInfo{ImportPath: pkg},
+			&packageInfo{name: path.Base(pkg), exports: stdlib[pkg]})
+	}
+	for left := range refs {
+		if left == "rand" {
+			// Make sure we try crypto/rand before math/rand.
+			add("crypto/rand")
+			add("math/rand")
+			continue
+		}
+		for importPath := range stdlib {
+			if path.Base(importPath) == left {
+				add(importPath)
+			}
+		}
+	}
+}
+
+// A Resolver does the build-system-specific parts of goimports.
+type Resolver interface {
+	// loadPackageNames loads the package names in importPaths.
+	loadPackageNames(importPaths []string, srcDir string) (map[string]string, error)
+	// scan finds (at least) the packages satisfying refs. The returned slice is unordered.
+	scan(refs references) ([]*pkg, error)
+	// loadExports returns the set of exported symbols in the package at dir.
+	// It returns an error if the package name in dir does not match expectPackage.
+	// loadExports may be called concurrently.
+	loadExports(ctx context.Context, expectPackage string, pkg *pkg) (map[string]bool, error)
+}
+
+// gopackagesResolver implements resolver for GOPATH and module workspaces using go/packages.
+type goPackagesResolver struct {
+	env *ProcessEnv
+}
+
+func (r *goPackagesResolver) loadPackageNames(importPaths []string, srcDir string) (map[string]string, error) {
+	if len(importPaths) == 0 {
+		return nil, nil
+	}
+	cfg := r.env.newPackagesConfig(packages.LoadFiles)
+	pkgs, err := packages.Load(cfg, importPaths...)
+	if err != nil {
+		return nil, err
+	}
+	names := map[string]string{}
+	for _, pkg := range pkgs {
+		names[VendorlessPath(pkg.PkgPath)] = pkg.Name
+	}
+	// We may not have found all the packages. Guess the rest.
+	for _, path := range importPaths {
+		if _, ok := names[path]; ok {
+			continue
+		}
+		names[path] = importPathToAssumedName(path)
+	}
+	return names, nil
+
+}
+
+func (r *goPackagesResolver) scan(refs references) ([]*pkg, error) {
+	var loadQueries []string
+	for pkgName := range refs {
+		loadQueries = append(loadQueries, "iamashamedtousethedisabledqueryname="+pkgName)
+	}
+	sort.Strings(loadQueries)
+	cfg := r.env.newPackagesConfig(packages.LoadFiles)
+	goPackages, err := packages.Load(cfg, loadQueries...)
+	if err != nil {
+		return nil, err
+	}
+
+	var scan []*pkg
+	for _, goPackage := range goPackages {
+		scan = append(scan, &pkg{
+			dir:             filepath.Dir(goPackage.CompiledGoFiles[0]),
+			importPathShort: VendorlessPath(goPackage.PkgPath),
+			goPackage:       goPackage,
+		})
+	}
+	return scan, nil
+}
+
+func (r *goPackagesResolver) loadExports(ctx context.Context, expectPackage string, pkg *pkg) (map[string]bool, error) {
+	if pkg.goPackage == nil {
+		return nil, fmt.Errorf("goPackage not set")
+	}
+	exports := map[string]bool{}
+	fset := token.NewFileSet()
+	for _, fname := range pkg.goPackage.CompiledGoFiles {
+		f, err := parser.ParseFile(fset, fname, nil, 0)
+		if err != nil {
+			return nil, fmt.Errorf("parsing %s: %v", fname, err)
+		}
+		for name := range f.Scope.Objects {
+			if ast.IsExported(name) {
+				exports[name] = true
+			}
+		}
+	}
+	return exports, nil
+}
+
+func addExternalCandidates(pass *pass, refs references, filename string) error {
+	dirScan, err := pass.env.GetResolver().scan(refs)
+	if err != nil {
+		return err
+	}
+
+	// Search for imports matching potential package references.
+	type result struct {
+		imp *ImportInfo
+		pkg *packageInfo
+	}
+	results := make(chan result, len(refs))
+
+	ctx, cancel := context.WithCancel(context.TODO())
+	var wg sync.WaitGroup
+	defer func() {
+		cancel()
+		wg.Wait()
+	}()
+	var (
+		firstErr     error
+		firstErrOnce sync.Once
+	)
+	for pkgName, symbols := range refs {
+		wg.Add(1)
+		go func(pkgName string, symbols map[string]bool) {
+			defer wg.Done()
+
+			found, err := findImport(ctx, pass, dirScan, pkgName, symbols, filename)
+
+			if err != nil {
+				firstErrOnce.Do(func() {
+					firstErr = err
+					cancel()
+				})
+				return
+			}
+
+			if found == nil {
+				return // No matching package.
+			}
+
+			imp := &ImportInfo{
+				ImportPath: found.importPathShort,
+			}
+
+			pkg := &packageInfo{
+				name:    pkgName,
+				exports: symbols,
+			}
+			results <- result{imp, pkg}
+		}(pkgName, symbols)
+	}
+	go func() {
+		wg.Wait()
+		close(results)
+	}()
+
+	for result := range results {
+		pass.addCandidate(result.imp, result.pkg)
+	}
+	return firstErr
+}
+
+// notIdentifier reports whether ch is an invalid identifier character.
+func notIdentifier(ch rune) bool {
+	return !('a' <= ch && ch <= 'z' || 'A' <= ch && ch <= 'Z' ||
+		'0' <= ch && ch <= '9' ||
+		ch == '_' ||
+		ch >= utf8.RuneSelf && (unicode.IsLetter(ch) || unicode.IsDigit(ch)))
+}
+
+// importPathToAssumedName returns the assumed package name of an import path.
+// It does this using only string parsing of the import path.
+// It picks the last element of the path that does not look like a major
+// version, and then picks the valid identifier off the start of that element.
+// It is used to determine if a local rename should be added to an import for
+// clarity.
+// This function could be moved to a standard package and exported if we want
+// for use in other tools.
+func importPathToAssumedName(importPath string) string {
+	base := path.Base(importPath)
+	if strings.HasPrefix(base, "v") {
+		if _, err := strconv.Atoi(base[1:]); err == nil {
+			dir := path.Dir(importPath)
+			if dir != "." {
+				base = path.Base(dir)
+			}
+		}
+	}
+	base = strings.TrimPrefix(base, "go-")
+	if i := strings.IndexFunc(base, notIdentifier); i >= 0 {
+		base = base[:i]
+	}
+	return base
+}
+
+// gopathResolver implements resolver for GOPATH workspaces.
+type gopathResolver struct {
+	env *ProcessEnv
+}
+
+func (r *gopathResolver) loadPackageNames(importPaths []string, srcDir string) (map[string]string, error) {
+	names := map[string]string{}
+	for _, path := range importPaths {
+		names[path] = importPathToName(r.env, path, srcDir)
+	}
+	return names, nil
+}
+
+// importPathToName finds out the actual package name, as declared in its .go files.
+// If there's a problem, it returns "".
+func importPathToName(env *ProcessEnv, importPath, srcDir string) (packageName string) {
+	// Fast path for standard library without going to disk.
+	if _, ok := stdlib[importPath]; ok {
+		return path.Base(importPath) // stdlib packages always match their paths.
+	}
+
+	buildPkg, err := env.buildContext().Import(importPath, srcDir, build.FindOnly)
+	if err != nil {
+		return ""
+	}
+	pkgName, err := packageDirToName(buildPkg.Dir)
+	if err != nil {
+		return ""
+	}
+	return pkgName
+}
+
+// packageDirToName is a faster version of build.Import if
+// the only thing desired is the package name. Given a directory,
+// packageDirToName then only parses one file in the package,
+// trusting that the files in the directory are consistent.
+func packageDirToName(dir string) (packageName string, err error) {
+	d, err := os.Open(dir)
+	if err != nil {
+		return "", err
+	}
+	names, err := d.Readdirnames(-1)
+	d.Close()
+	if err != nil {
+		return "", err
+	}
+	sort.Strings(names) // to have predictable behavior
+	var lastErr error
+	var nfile int
+	for _, name := range names {
+		if !strings.HasSuffix(name, ".go") {
+			continue
+		}
+		if strings.HasSuffix(name, "_test.go") {
+			continue
+		}
+		nfile++
+		fullFile := filepath.Join(dir, name)
+
+		fset := token.NewFileSet()
+		f, err := parser.ParseFile(fset, fullFile, nil, parser.PackageClauseOnly)
+		if err != nil {
+			lastErr = err
+			continue
+		}
+		pkgName := f.Name.Name
+		if pkgName == "documentation" {
+			// Special case from go/build.ImportDir, not
+			// handled by ctx.MatchFile.
+			continue
+		}
+		if pkgName == "main" {
+			// Also skip package main, assuming it's a +build ignore generator or example.
+			// Since you can't import a package main anyway, there's no harm here.
+			continue
+		}
+		return pkgName, nil
+	}
+	if lastErr != nil {
+		return "", lastErr
+	}
+	return "", fmt.Errorf("no importable package found in %d Go files", nfile)
+}
+
+type pkg struct {
+	goPackage       *packages.Package
+	dir             string // absolute file path to pkg directory ("/usr/lib/go/src/net/http")
+	importPathShort string // vendorless import path ("net/http", "a/b")
+}
+
+type pkgDistance struct {
+	pkg      *pkg
+	distance int // relative distance to target
+}
+
+// byDistanceOrImportPathShortLength sorts by relative distance breaking ties
+// on the short import path length and then the import string itself.
+type byDistanceOrImportPathShortLength []pkgDistance
+
+func (s byDistanceOrImportPathShortLength) Len() int { return len(s) }
+func (s byDistanceOrImportPathShortLength) Less(i, j int) bool {
+	di, dj := s[i].distance, s[j].distance
+	if di == -1 {
+		return false
+	}
+	if dj == -1 {
+		return true
+	}
+	if di != dj {
+		return di < dj
+	}
+
+	vi, vj := s[i].pkg.importPathShort, s[j].pkg.importPathShort
+	if len(vi) != len(vj) {
+		return len(vi) < len(vj)
+	}
+	return vi < vj
+}
+func (s byDistanceOrImportPathShortLength) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
+
+func distance(basepath, targetpath string) int {
+	p, err := filepath.Rel(basepath, targetpath)
+	if err != nil {
+		return -1
+	}
+	if p == "." {
+		return 0
+	}
+	return strings.Count(p, string(filepath.Separator)) + 1
+}
+
+func (r *gopathResolver) scan(_ references) ([]*pkg, error) {
+	dupCheck := make(map[string]bool)
+	var result []*pkg
+
+	var mu sync.Mutex
+
+	add := func(root gopathwalk.Root, dir string) {
+		mu.Lock()
+		defer mu.Unlock()
+
+		if _, dup := dupCheck[dir]; dup {
+			return
+		}
+		dupCheck[dir] = true
+		importpath := filepath.ToSlash(dir[len(root.Path)+len("/"):])
+		result = append(result, &pkg{
+			importPathShort: VendorlessPath(importpath),
+			dir:             dir,
+		})
+	}
+	gopathwalk.Walk(gopathwalk.SrcDirsRoots(r.env.buildContext()), add, gopathwalk.Options{Debug: r.env.Debug, ModulesEnabled: false})
+	return result, nil
+}
+
+func (r *gopathResolver) loadExports(ctx context.Context, expectPackage string, pkg *pkg) (map[string]bool, error) {
+	return loadExportsFromFiles(ctx, r.env, expectPackage, pkg.dir)
+}
+
+// VendorlessPath returns the devendorized version of the import path ipath.
+// For example, VendorlessPath("foo/bar/vendor/a/b") returns "a/b".
+func VendorlessPath(ipath string) string {
+	// Devendorize for use in import statement.
+	if i := strings.LastIndex(ipath, "/vendor/"); i >= 0 {
+		return ipath[i+len("/vendor/"):]
+	}
+	if strings.HasPrefix(ipath, "vendor/") {
+		return ipath[len("vendor/"):]
+	}
+	return ipath
+}
+
+func loadExportsFromFiles(ctx context.Context, env *ProcessEnv, expectPackage string, dir string) (map[string]bool, error) {
+	exports := make(map[string]bool)
+
+	// Look for non-test, buildable .go files which could provide exports.
+	all, err := ioutil.ReadDir(dir)
+	if err != nil {
+		return nil, err
+	}
+	var files []os.FileInfo
+	for _, fi := range all {
+		name := fi.Name()
+		if !strings.HasSuffix(name, ".go") || strings.HasSuffix(name, "_test.go") {
+			continue
+		}
+		match, err := env.buildContext().MatchFile(dir, fi.Name())
+		if err != nil || !match {
+			continue
+		}
+		files = append(files, fi)
+	}
+
+	if len(files) == 0 {
+		return nil, fmt.Errorf("dir %v contains no buildable, non-test .go files", dir)
+	}
+
+	fset := token.NewFileSet()
+	for _, fi := range files {
+		select {
+		case <-ctx.Done():
+			return nil, ctx.Err()
+		default:
+		}
+
+		fullFile := filepath.Join(dir, fi.Name())
+		f, err := parser.ParseFile(fset, fullFile, nil, 0)
+		if err != nil {
+			return nil, fmt.Errorf("parsing %s: %v", fullFile, err)
+		}
+		pkgName := f.Name.Name
+		if pkgName == "documentation" {
+			// Special case from go/build.ImportDir, not
+			// handled by MatchFile above.
+			continue
+		}
+		if pkgName != expectPackage {
+			return nil, fmt.Errorf("scan of dir %v is not expected package %v (actually %v)", dir, expectPackage, pkgName)
+		}
+		for name := range f.Scope.Objects {
+			if ast.IsExported(name) {
+				exports[name] = true
+			}
+		}
+	}
+
+	if env.Debug {
+		exportList := make([]string, 0, len(exports))
+		for k := range exports {
+			exportList = append(exportList, k)
+		}
+		sort.Strings(exportList)
+		env.Logf("loaded exports in dir %v (package %v): %v", dir, expectPackage, strings.Join(exportList, ", "))
+	}
+	return exports, nil
+}
+
+// findImport searches for a package with the given symbols.
+// If no package is found, findImport returns ("", false, nil)
+func findImport(ctx context.Context, pass *pass, dirScan []*pkg, pkgName string, symbols map[string]bool, filename string) (*pkg, error) {
+	pkgDir, err := filepath.Abs(filename)
+	if err != nil {
+		return nil, err
+	}
+	pkgDir = filepath.Dir(pkgDir)
+
+	// Find candidate packages, looking only at their directory names first.
+	var candidates []pkgDistance
+	for _, pkg := range dirScan {
+		if pkg.dir == pkgDir && pass.f.Name.Name == pkgName {
+			// The candidate is in the same directory and has the
+			// same package name. Don't try to import ourselves.
+			continue
+		}
+		if pkgIsCandidate(filename, pkgName, pkg) {
+			candidates = append(candidates, pkgDistance{
+				pkg:      pkg,
+				distance: distance(pkgDir, pkg.dir),
+			})
+		}
+	}
+
+	// Sort the candidates by their import package length,
+	// assuming that shorter package names are better than long
+	// ones.  Note that this sorts by the de-vendored name, so
+	// there's no "penalty" for vendoring.
+	sort.Sort(byDistanceOrImportPathShortLength(candidates))
+	if pass.env.Debug {
+		for i, c := range candidates {
+			pass.env.Logf("%s candidate %d/%d: %v in %v", pkgName, i+1, len(candidates), c.pkg.importPathShort, c.pkg.dir)
+		}
+	}
+
+	// Collect exports for packages with matching names.
+
+	rescv := make([]chan *pkg, len(candidates))
+	for i := range candidates {
+		rescv[i] = make(chan *pkg, 1)
+	}
+	const maxConcurrentPackageImport = 4
+	loadExportsSem := make(chan struct{}, maxConcurrentPackageImport)
+
+	ctx, cancel := context.WithCancel(ctx)
+	var wg sync.WaitGroup
+	defer func() {
+		cancel()
+		wg.Wait()
+	}()
+
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		for i, c := range candidates {
+			select {
+			case loadExportsSem <- struct{}{}:
+			case <-ctx.Done():
+				return
+			}
+
+			wg.Add(1)
+			go func(c pkgDistance, resc chan<- *pkg) {
+				defer func() {
+					<-loadExportsSem
+					wg.Done()
+				}()
+
+				if pass.env.Debug {
+					pass.env.Logf("loading exports in dir %s (seeking package %s)", c.pkg.dir, pkgName)
+				}
+				exports, err := pass.env.GetResolver().loadExports(ctx, pkgName, c.pkg)
+				if err != nil {
+					if pass.env.Debug {
+						pass.env.Logf("loading exports in dir %s (seeking package %s): %v", c.pkg.dir, pkgName, err)
+					}
+					resc <- nil
+					return
+				}
+
+				// If it doesn't have the right
+				// symbols, send nil to mean no match.
+				for symbol := range symbols {
+					if !exports[symbol] {
+						resc <- nil
+						return
+					}
+				}
+				resc <- c.pkg
+			}(c, rescv[i])
+		}
+	}()
+
+	for _, resc := range rescv {
+		pkg := <-resc
+		if pkg == nil {
+			continue
+		}
+		return pkg, nil
+	}
+	return nil, nil
+}
+
+// pkgIsCandidate reports whether pkg is a candidate for satisfying the
+// finding which package pkgIdent in the file named by filename is trying
+// to refer to.
+//
+// This check is purely lexical and is meant to be as fast as possible
+// because it's run over all $GOPATH directories to filter out poor
+// candidates in order to limit the CPU and I/O later parsing the
+// exports in candidate packages.
+//
+// filename is the file being formatted.
+// pkgIdent is the package being searched for, like "client" (if
+// searching for "client.New")
+func pkgIsCandidate(filename, pkgIdent string, pkg *pkg) bool {
+	// Check "internal" and "vendor" visibility:
+	if !canUse(filename, pkg.dir) {
+		return false
+	}
+
+	// Speed optimization to minimize disk I/O:
+	// the last two components on disk must contain the
+	// package name somewhere.
+	//
+	// This permits mismatch naming like directory
+	// "go-foo" being package "foo", or "pkg.v3" being "pkg",
+	// or directory "google.golang.org/api/cloudbilling/v1"
+	// being package "cloudbilling", but doesn't
+	// permit a directory "foo" to be package
+	// "bar", which is strongly discouraged
+	// anyway. There's no reason goimports needs
+	// to be slow just to accommodate that.
+	lastTwo := lastTwoComponents(pkg.importPathShort)
+	if strings.Contains(lastTwo, pkgIdent) {
+		return true
+	}
+	if hasHyphenOrUpperASCII(lastTwo) && !hasHyphenOrUpperASCII(pkgIdent) {
+		lastTwo = lowerASCIIAndRemoveHyphen(lastTwo)
+		if strings.Contains(lastTwo, pkgIdent) {
+			return true
+		}
+	}
+
+	return false
+}
+
+func hasHyphenOrUpperASCII(s string) bool {
+	for i := 0; i < len(s); i++ {
+		b := s[i]
+		if b == '-' || ('A' <= b && b <= 'Z') {
+			return true
+		}
+	}
+	return false
+}
+
+func lowerASCIIAndRemoveHyphen(s string) (ret string) {
+	buf := make([]byte, 0, len(s))
+	for i := 0; i < len(s); i++ {
+		b := s[i]
+		switch {
+		case b == '-':
+			continue
+		case 'A' <= b && b <= 'Z':
+			buf = append(buf, b+('a'-'A'))
+		default:
+			buf = append(buf, b)
+		}
+	}
+	return string(buf)
+}
+
+// canUse reports whether the package in dir is usable from filename,
+// respecting the Go "internal" and "vendor" visibility rules.
+func canUse(filename, dir string) bool {
+	// Fast path check, before any allocations. If it doesn't contain vendor
+	// or internal, it's not tricky:
+	// Note that this can false-negative on directories like "notinternal",
+	// but we check it correctly below. This is just a fast path.
+	if !strings.Contains(dir, "vendor") && !strings.Contains(dir, "internal") {
+		return true
+	}
+
+	dirSlash := filepath.ToSlash(dir)
+	if !strings.Contains(dirSlash, "/vendor/") && !strings.Contains(dirSlash, "/internal/") && !strings.HasSuffix(dirSlash, "/internal") {
+		return true
+	}
+	// Vendor or internal directory only visible from children of parent.
+	// That means the path from the current directory to the target directory
+	// can contain ../vendor or ../internal but not ../foo/vendor or ../foo/internal
+	// or bar/vendor or bar/internal.
+	// After stripping all the leading ../, the only okay place to see vendor or internal
+	// is at the very beginning of the path.
+	absfile, err := filepath.Abs(filename)
+	if err != nil {
+		return false
+	}
+	absdir, err := filepath.Abs(dir)
+	if err != nil {
+		return false
+	}
+	rel, err := filepath.Rel(absfile, absdir)
+	if err != nil {
+		return false
+	}
+	relSlash := filepath.ToSlash(rel)
+	if i := strings.LastIndex(relSlash, "../"); i >= 0 {
+		relSlash = relSlash[i+len("../"):]
+	}
+	return !strings.Contains(relSlash, "/vendor/") && !strings.Contains(relSlash, "/internal/") && !strings.HasSuffix(relSlash, "/internal")
+}
+
+// lastTwoComponents returns at most the last two path components
+// of v, using either / or \ as the path separator.
+func lastTwoComponents(v string) string {
+	nslash := 0
+	for i := len(v) - 1; i >= 0; i-- {
+		if v[i] == '/' || v[i] == '\\' {
+			nslash++
+			if nslash == 2 {
+				return v[i:]
+			}
+		}
+	}
+	return v
+}
+
+type visitFn func(node ast.Node) ast.Visitor
+
+func (fn visitFn) Visit(node ast.Node) ast.Visitor {
+	return fn(node)
+}
diff --git a/vendor/golang.org/x/tools/internal/imports/imports.go b/vendor/golang.org/x/tools/internal/imports/imports.go
new file mode 100644
index 0000000000..2c074cb2db
--- /dev/null
+++ b/vendor/golang.org/x/tools/internal/imports/imports.go
@@ -0,0 +1,388 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:generate go run mkstdlib.go
+
+// Package imports implements a Go pretty-printer (like package "go/format")
+// that also adds or removes import statements as necessary.
+package imports
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"go/ast"
+	"go/build"
+	"go/format"
+	"go/parser"
+	"go/printer"
+	"go/token"
+	"io"
+	"io/ioutil"
+	"log"
+	"regexp"
+	"strconv"
+	"strings"
+
+	"golang.org/x/tools/go/ast/astutil"
+)
+
+// Options is golang.org/x/tools/imports.Options with extra internal-only options.
+type Options struct {
+	Env *ProcessEnv // The environment to use. Note: this contains the cached module and filesystem state.
+
+	Fragment  bool // Accept fragment of a source file (no package statement)
+	AllErrors bool // Report all errors (not just the first 10 on different lines)
+
+	Comments  bool // Print comments (true if nil *Options provided)
+	TabIndent bool // Use tabs for indent (true if nil *Options provided)
+	TabWidth  int  // Tab width (8 if nil *Options provided)
+
+	FormatOnly bool // Disable the insertion and deletion of imports
+}
+
+// Process implements golang.org/x/tools/imports.Process with explicit context in env.
+func Process(filename string, src []byte, opt *Options) (formatted []byte, err error) {
+	src, opt, err = initialize(filename, src, opt)
+	if err != nil {
+		return nil, err
+	}
+
+	fileSet := token.NewFileSet()
+	file, adjust, err := parse(fileSet, filename, src, opt)
+	if err != nil {
+		return nil, err
+	}
+
+	if !opt.FormatOnly {
+		if err := fixImports(fileSet, file, filename, opt.Env); err != nil {
+			return nil, err
+		}
+	}
+	return formatFile(fileSet, file, src, adjust, opt)
+}
+
+// FixImports returns a list of fixes to the imports that, when applied,
+// will leave the imports in the same state as Process.
+//
+// Note that filename's directory influences which imports can be chosen,
+// so it is important that filename be accurate.
+func FixImports(filename string, src []byte, opt *Options) (fixes []*ImportFix, err error) {
+	src, opt, err = initialize(filename, src, opt)
+	if err != nil {
+		return nil, err
+	}
+
+	fileSet := token.NewFileSet()
+	file, _, err := parse(fileSet, filename, src, opt)
+	if err != nil {
+		return nil, err
+	}
+
+	return getFixes(fileSet, file, filename, opt.Env)
+}
+
+// ApplyFix will apply all of the fixes to the file and format it.
+func ApplyFixes(fixes []*ImportFix, filename string, src []byte, opt *Options) (formatted []byte, err error) {
+	src, opt, err = initialize(filename, src, opt)
+	if err != nil {
+		return nil, err
+	}
+
+	fileSet := token.NewFileSet()
+	file, adjust, err := parse(fileSet, filename, src, opt)
+	if err != nil {
+		return nil, err
+	}
+
+	// Apply the fixes to the file.
+	apply(fileSet, file, fixes)
+
+	return formatFile(fileSet, file, src, adjust, opt)
+}
+
+// GetAllCandidates gets all of the standard library candidate packages to import in
+// sorted order on import path.
+func GetAllCandidates(filename string, opt *Options) (pkgs []ImportFix, err error) {
+	_, opt, err = initialize(filename, []byte{}, opt)
+	if err != nil {
+		return nil, err
+	}
+	return getAllCandidates(filename, opt.Env)
+}
+
+// initialize sets the values for opt and src.
+// If they are provided, they are not changed. Otherwise opt is set to the
+// default values and src is read from the file system.
+func initialize(filename string, src []byte, opt *Options) ([]byte, *Options, error) {
+	// Use defaults if opt is nil.
+	if opt == nil {
+		opt = &Options{Comments: true, TabIndent: true, TabWidth: 8}
+	}
+
+	// Set the env if the user has not provided it.
+	if opt.Env == nil {
+		opt.Env = &ProcessEnv{
+			GOPATH: build.Default.GOPATH,
+			GOROOT: build.Default.GOROOT,
+		}
+	}
+
+	// Set the logger if the user has not provided it.
+	if opt.Env.Logf == nil {
+		opt.Env.Logf = log.Printf
+	}
+
+	if src == nil {
+		b, err := ioutil.ReadFile(filename)
+		if err != nil {
+			return nil, nil, err
+		}
+		src = b
+	}
+
+	return src, opt, nil
+}
+
+func formatFile(fileSet *token.FileSet, file *ast.File, src []byte, adjust func(orig []byte, src []byte) []byte, opt *Options) ([]byte, error) {
+	mergeImports(opt.Env, fileSet, file)
+	sortImports(opt.Env, fileSet, file)
+	imps := astutil.Imports(fileSet, file)
+	var spacesBefore []string // import paths we need spaces before
+	for _, impSection := range imps {
+		// Within each block of contiguous imports, see if any
+		// import lines are in different group numbers. If so,
+		// we'll need to put a space between them so it's
+		// compatible with gofmt.
+		lastGroup := -1
+		for _, importSpec := range impSection {
+			importPath, _ := strconv.Unquote(importSpec.Path.Value)
+			groupNum := importGroup(opt.Env, importPath)
+			if groupNum != lastGroup && lastGroup != -1 {
+				spacesBefore = append(spacesBefore, importPath)
+			}
+			lastGroup = groupNum
+		}
+
+	}
+
+	printerMode := printer.UseSpaces
+	if opt.TabIndent {
+		printerMode |= printer.TabIndent
+	}
+	printConfig := &printer.Config{Mode: printerMode, Tabwidth: opt.TabWidth}
+
+	var buf bytes.Buffer
+	err := printConfig.Fprint(&buf, fileSet, file)
+	if err != nil {
+		return nil, err
+	}
+	out := buf.Bytes()
+	if adjust != nil {
+		out = adjust(src, out)
+	}
+	if len(spacesBefore) > 0 {
+		out, err = addImportSpaces(bytes.NewReader(out), spacesBefore)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	out, err = format.Source(out)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// parse parses src, which was read from filename,
+// as a Go source file or statement list.
+func parse(fset *token.FileSet, filename string, src []byte, opt *Options) (*ast.File, func(orig, src []byte) []byte, error) {
+	parserMode := parser.Mode(0)
+	if opt.Comments {
+		parserMode |= parser.ParseComments
+	}
+	if opt.AllErrors {
+		parserMode |= parser.AllErrors
+	}
+
+	// Try as whole source file.
+	file, err := parser.ParseFile(fset, filename, src, parserMode)
+	if err == nil {
+		return file, nil, nil
+	}
+	// If the error is that the source file didn't begin with a
+	// package line and we accept fragmented input, fall through to
+	// try as a source fragment.  Stop and return on any other error.
+	if !opt.Fragment || !strings.Contains(err.Error(), "expected 'package'") {
+		return nil, nil, err
+	}
+
+	// If this is a declaration list, make it a source file
+	// by inserting a package clause.
+	// Insert using a ;, not a newline, so that parse errors are on
+	// the correct line.
+	const prefix = "package main;"
+	psrc := append([]byte(prefix), src...)
+	file, err = parser.ParseFile(fset, filename, psrc, parserMode)
+	if err == nil {
+		// Gofmt will turn the ; into a \n.
+		// Do that ourselves now and update the file contents,
+		// so that positions and line numbers are correct going forward.
+		psrc[len(prefix)-1] = '\n'
+		fset.File(file.Package).SetLinesForContent(psrc)
+
+		// If a main function exists, we will assume this is a main
+		// package and leave the file.
+		if containsMainFunc(file) {
+			return file, nil, nil
+		}
+
+		adjust := func(orig, src []byte) []byte {
+			// Remove the package clause.
+			src = src[len(prefix):]
+			return matchSpace(orig, src)
+		}
+		return file, adjust, nil
+	}
+	// If the error is that the source file didn't begin with a
+	// declaration, fall through to try as a statement list.
+	// Stop and return on any other error.
+	if !strings.Contains(err.Error(), "expected declaration") {
+		return nil, nil, err
+	}
+
+	// If this is a statement list, make it a source file
+	// by inserting a package clause and turning the list
+	// into a function body.  This handles expressions too.
+	// Insert using a ;, not a newline, so that the line numbers
+	// in fsrc match the ones in src.
+	fsrc := append(append([]byte("package p; func _() {"), src...), '}')
+	file, err = parser.ParseFile(fset, filename, fsrc, parserMode)
+	if err == nil {
+		adjust := func(orig, src []byte) []byte {
+			// Remove the wrapping.
+			// Gofmt has turned the ; into a \n\n.
+			src = src[len("package p\n\nfunc _() {"):]
+			src = src[:len(src)-len("}\n")]
+			// Gofmt has also indented the function body one level.
+			// Remove that indent.
+			src = bytes.Replace(src, []byte("\n\t"), []byte("\n"), -1)
+			return matchSpace(orig, src)
+		}
+		return file, adjust, nil
+	}
+
+	// Failed, and out of options.
+	return nil, nil, err
+}
+
+// containsMainFunc checks if a file contains a function declaration with the
+// function signature 'func main()'
+func containsMainFunc(file *ast.File) bool {
+	for _, decl := range file.Decls {
+		if f, ok := decl.(*ast.FuncDecl); ok {
+			if f.Name.Name != "main" {
+				continue
+			}
+
+			if len(f.Type.Params.List) != 0 {
+				continue
+			}
+
+			if f.Type.Results != nil && len(f.Type.Results.List) != 0 {
+				continue
+			}
+
+			return true
+		}
+	}
+
+	return false
+}
+
+func cutSpace(b []byte) (before, middle, after []byte) {
+	i := 0
+	for i < len(b) && (b[i] == ' ' || b[i] == '\t' || b[i] == '\n') {
+		i++
+	}
+	j := len(b)
+	for j > 0 && (b[j-1] == ' ' || b[j-1] == '\t' || b[j-1] == '\n') {
+		j--
+	}
+	if i <= j {
+		return b[:i], b[i:j], b[j:]
+	}
+	return nil, nil, b[j:]
+}
+
+// matchSpace reformats src to use the same space context as orig.
+// 1) If orig begins with blank lines, matchSpace inserts them at the beginning of src.
+// 2) matchSpace copies the indentation of the first non-blank line in orig
+//    to every non-blank line in src.
+// 3) matchSpace copies the trailing space from orig and uses it in place
+//   of src's trailing space.
+func matchSpace(orig []byte, src []byte) []byte {
+	before, _, after := cutSpace(orig)
+	i := bytes.LastIndex(before, []byte{'\n'})
+	before, indent := before[:i+1], before[i+1:]
+
+	_, src, _ = cutSpace(src)
+
+	var b bytes.Buffer
+	b.Write(before)
+	for len(src) > 0 {
+		line := src
+		if i := bytes.IndexByte(line, '\n'); i >= 0 {
+			line, src = line[:i+1], line[i+1:]
+		} else {
+			src = nil
+		}
+		if len(line) > 0 && line[0] != '\n' { // not blank
+			b.Write(indent)
+		}
+		b.Write(line)
+	}
+	b.Write(after)
+	return b.Bytes()
+}
+
+var impLine = regexp.MustCompile(`^\s+(?:[\w\.]+\s+)?"(.+)"`)
+
+func addImportSpaces(r io.Reader, breaks []string) ([]byte, error) {
+	var out bytes.Buffer
+	in := bufio.NewReader(r)
+	inImports := false
+	done := false
+	for {
+		s, err := in.ReadString('\n')
+		if err == io.EOF {
+			break
+		} else if err != nil {
+			return nil, err
+		}
+
+		if !inImports && !done && strings.HasPrefix(s, "import") {
+			inImports = true
+		}
+		if inImports && (strings.HasPrefix(s, "var") ||
+			strings.HasPrefix(s, "func") ||
+			strings.HasPrefix(s, "const") ||
+			strings.HasPrefix(s, "type")) {
+			done = true
+			inImports = false
+		}
+		if inImports && len(breaks) > 0 {
+			if m := impLine.FindStringSubmatch(s); m != nil {
+				if m[1] == breaks[0] {
+					out.WriteByte('\n')
+					breaks = breaks[1:]
+				}
+			}
+		}
+
+		fmt.Fprint(&out, s)
+	}
+	return out.Bytes(), nil
+}
diff --git a/vendor/golang.org/x/tools/internal/imports/mkindex.go b/vendor/golang.org/x/tools/internal/imports/mkindex.go
new file mode 100644
index 0000000000..ef8c0d2871
--- /dev/null
+++ b/vendor/golang.org/x/tools/internal/imports/mkindex.go
@@ -0,0 +1,173 @@
+// +build ignore
+
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Command mkindex creates the file "pkgindex.go" containing an index of the Go
+// standard library. The file is intended to be built as part of the imports
+// package, so that the package may be used in environments where a GOROOT is
+// not available (such as App Engine).
+package imports
+
+import (
+	"bytes"
+	"fmt"
+	"go/ast"
+	"go/build"
+	"go/format"
+	"go/parser"
+	"go/token"
+	"io/ioutil"
+	"log"
+	"os"
+	"path"
+	"path/filepath"
+	"strings"
+)
+
+var (
+	pkgIndex = make(map[string][]pkg)
+	exports  = make(map[string]map[string]bool)
+)
+
+func main() {
+	// Don't use GOPATH.
+	ctx := build.Default
+	ctx.GOPATH = ""
+
+	// Populate pkgIndex global from GOROOT.
+	for _, path := range ctx.SrcDirs() {
+		f, err := os.Open(path)
+		if err != nil {
+			log.Print(err)
+			continue
+		}
+		children, err := f.Readdir(-1)
+		f.Close()
+		if err != nil {
+			log.Print(err)
+			continue
+		}
+		for _, child := range children {
+			if child.IsDir() {
+				loadPkg(path, child.Name())
+			}
+		}
+	}
+	// Populate exports global.
+	for _, ps := range pkgIndex {
+		for _, p := range ps {
+			e := loadExports(p.dir)
+			if e != nil {
+				exports[p.dir] = e
+			}
+		}
+	}
+
+	// Construct source file.
+	var buf bytes.Buffer
+	fmt.Fprint(&buf, pkgIndexHead)
+	fmt.Fprintf(&buf, "var pkgIndexMaster = %#v\n", pkgIndex)
+	fmt.Fprintf(&buf, "var exportsMaster = %#v\n", exports)
+	src := buf.Bytes()
+
+	// Replace main.pkg type name with pkg.
+	src = bytes.Replace(src, []byte("main.pkg"), []byte("pkg"), -1)
+	// Replace actual GOROOT with "/go".
+	src = bytes.Replace(src, []byte(ctx.GOROOT), []byte("/go"), -1)
+	// Add some line wrapping.
+	src = bytes.Replace(src, []byte("}, "), []byte("},\n"), -1)
+	src = bytes.Replace(src, []byte("true, "), []byte("true,\n"), -1)
+
+	var err error
+	src, err = format.Source(src)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// Write out source file.
+	err = ioutil.WriteFile("pkgindex.go", src, 0644)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+const pkgIndexHead = `package imports
+
+func init() {
+	pkgIndexOnce.Do(func() {
+		pkgIndex.m = pkgIndexMaster
+	})
+	loadExports = func(dir string) map[string]bool {
+		return exportsMaster[dir]
+	}
+}
+`
+
+type pkg struct {
+	importpath string // full pkg import path, e.g. "net/http"
+	dir        string // absolute file path to pkg directory e.g. "/usr/lib/go/src/fmt"
+}
+
+var fset = token.NewFileSet()
+
+func loadPkg(root, importpath string) {
+	shortName := path.Base(importpath)
+	if shortName == "testdata" {
+		return
+	}
+
+	dir := filepath.Join(root, importpath)
+	pkgIndex[shortName] = append(pkgIndex[shortName], pkg{
+		importpath: importpath,
+		dir:        dir,
+	})
+
+	pkgDir, err := os.Open(dir)
+	if err != nil {
+		return
+	}
+	children, err := pkgDir.Readdir(-1)
+	pkgDir.Close()
+	if err != nil {
+		return
+	}
+	for _, child := range children {
+		name := child.Name()
+		if name == "" {
+			continue
+		}
+		if c := name[0]; c == '.' || ('0' <= c && c <= '9') {
+			continue
+		}
+		if child.IsDir() {
+			loadPkg(root, filepath.Join(importpath, name))
+		}
+	}
+}
+
+func loadExports(dir string) map[string]bool {
+	exports := make(map[string]bool)
+	buildPkg, err := build.ImportDir(dir, 0)
+	if err != nil {
+		if strings.Contains(err.Error(), "no buildable Go source files in") {
+			return nil
+		}
+		log.Printf("could not import %q: %v", dir, err)
+		return nil
+	}
+	for _, file := range buildPkg.GoFiles {
+		f, err := parser.ParseFile(fset, filepath.Join(dir, file), nil, 0)
+		if err != nil {
+			log.Printf("could not parse %q: %v", file, err)
+			continue
+		}
+		for name := range f.Scope.Objects {
+			if ast.IsExported(name) {
+				exports[name] = true
+			}
+		}
+	}
+	return exports
+}
diff --git a/vendor/golang.org/x/tools/internal/imports/mkstdlib.go b/vendor/golang.org/x/tools/internal/imports/mkstdlib.go
new file mode 100644
index 0000000000..f67b5c1edb
--- /dev/null
+++ b/vendor/golang.org/x/tools/internal/imports/mkstdlib.go
@@ -0,0 +1,132 @@
+// +build ignore
+
+// mkstdlib generates the zstdlib.go file, containing the Go standard
+// library API symbols. It's baked into the binary to avoid scanning
+// GOPATH in the common case.
+package imports
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"go/format"
+	"io"
+	"io/ioutil"
+	"log"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"regexp"
+	"runtime"
+	"sort"
+	"strings"
+)
+
+func mustOpen(name string) io.Reader {
+	f, err := os.Open(name)
+	if err != nil {
+		log.Fatal(err)
+	}
+	return f
+}
+
+func api(base string) string {
+	return filepath.Join(runtime.GOROOT(), "api", base)
+}
+
+var sym = regexp.MustCompile(`^pkg (\S+).*?, (?:var|func|type|const) ([A-Z]\w*)`)
+
+var unsafeSyms = map[string]bool{"Alignof": true, "ArbitraryType": true, "Offsetof": true, "Pointer": true, "Sizeof": true}
+
+func main() {
+	var buf bytes.Buffer
+	outf := func(format string, args ...interface{}) {
+		fmt.Fprintf(&buf, format, args...)
+	}
+	outf("// Code generated by mkstdlib.go. DO NOT EDIT.\n\n")
+	outf("package imports\n")
+	outf("var stdlib = map[string]map[string]bool{\n")
+	f := io.MultiReader(
+		mustOpen(api("go1.txt")),
+		mustOpen(api("go1.1.txt")),
+		mustOpen(api("go1.2.txt")),
+		mustOpen(api("go1.3.txt")),
+		mustOpen(api("go1.4.txt")),
+		mustOpen(api("go1.5.txt")),
+		mustOpen(api("go1.6.txt")),
+		mustOpen(api("go1.7.txt")),
+		mustOpen(api("go1.8.txt")),
+		mustOpen(api("go1.9.txt")),
+		mustOpen(api("go1.10.txt")),
+		mustOpen(api("go1.11.txt")),
+		mustOpen(api("go1.12.txt")),
+
+		// The API of the syscall/js package needs to be computed explicitly,
+		// because it's not included in the GOROOT/api/go1.*.txt files at this time.
+		syscallJSAPI(),
+	)
+	sc := bufio.NewScanner(f)
+
+	pkgs := map[string]map[string]bool{
+		"unsafe": unsafeSyms,
+	}
+	paths := []string{"unsafe"}
+
+	for sc.Scan() {
+		l := sc.Text()
+		has := func(v string) bool { return strings.Contains(l, v) }
+		if has("struct, ") || has("interface, ") || has(", method (") {
+			continue
+		}
+		if m := sym.FindStringSubmatch(l); m != nil {
+			path, sym := m[1], m[2]
+
+			if _, ok := pkgs[path]; !ok {
+				pkgs[path] = map[string]bool{}
+				paths = append(paths, path)
+			}
+			pkgs[path][sym] = true
+		}
+	}
+	if err := sc.Err(); err != nil {
+		log.Fatal(err)
+	}
+	sort.Strings(paths)
+	for _, path := range paths {
+		outf("\t%q: map[string]bool{\n", path)
+		pkg := pkgs[path]
+		var syms []string
+		for sym := range pkg {
+			syms = append(syms, sym)
+		}
+		sort.Strings(syms)
+		for _, sym := range syms {
+			outf("\t\t%q: true,\n", sym)
+		}
+		outf("},\n")
+	}
+	outf("}\n")
+	fmtbuf, err := format.Source(buf.Bytes())
+	if err != nil {
+		log.Fatal(err)
+	}
+	err = ioutil.WriteFile("zstdlib.go", fmtbuf, 0666)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+// syscallJSAPI returns the API of the syscall/js package.
+// It's computed from the contents of $(go env GOROOT)/src/syscall/js.
+func syscallJSAPI() io.Reader {
+	var exeSuffix string
+	if runtime.GOOS == "windows" {
+		exeSuffix = ".exe"
+	}
+	cmd := exec.Command("go"+exeSuffix, "run", "cmd/api", "-contexts", "js-wasm", "syscall/js")
+	out, err := cmd.Output()
+	if err != nil {
+		log.Fatalln(err)
+	}
+	return bytes.NewReader(out)
+}
diff --git a/vendor/golang.org/x/tools/internal/imports/mod.go b/vendor/golang.org/x/tools/internal/imports/mod.go
new file mode 100644
index 0000000000..dc74e39859
--- /dev/null
+++ b/vendor/golang.org/x/tools/internal/imports/mod.go
@@ -0,0 +1,480 @@
+package imports
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path"
+	"path/filepath"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"golang.org/x/tools/internal/gopathwalk"
+	"golang.org/x/tools/internal/module"
+)
+
+// ModuleResolver implements resolver for modules using the go command as little
+// as feasible.
+type ModuleResolver struct {
+	env            *ProcessEnv
+	moduleCacheDir string
+
+	Initialized   bool
+	Main          *ModuleJSON
+	ModsByModPath []*ModuleJSON // All modules, ordered by # of path components in module Path...
+	ModsByDir     []*ModuleJSON // ...or Dir.
+
+	// moduleCacheInfo stores information about the module cache.
+	moduleCacheInfo *moduleCacheInfo
+}
+
+type ModuleJSON struct {
+	Path     string           // module path
+	Version  string           // module version
+	Versions []string         // available module versions (with -versions)
+	Replace  *ModuleJSON      // replaced by this module
+	Time     *time.Time       // time version was created
+	Update   *ModuleJSON      // available update, if any (with -u)
+	Main     bool             // is this the main module?
+	Indirect bool             // is this module only an indirect dependency of main module?
+	Dir      string           // directory holding files for this module, if any
+	GoMod    string           // path to go.mod file for this module, if any
+	Error    *ModuleErrorJSON // error loading module
+}
+
+type ModuleErrorJSON struct {
+	Err string // the error itself
+}
+
+func (r *ModuleResolver) init() error {
+	if r.Initialized {
+		return nil
+	}
+	stdout, err := r.env.invokeGo("list", "-m", "-json", "...")
+	if err != nil {
+		return err
+	}
+	for dec := json.NewDecoder(stdout); dec.More(); {
+		mod := &ModuleJSON{}
+		if err := dec.Decode(mod); err != nil {
+			return err
+		}
+		if mod.Dir == "" {
+			if r.env.Debug {
+				r.env.Logf("module %v has not been downloaded and will be ignored", mod.Path)
+			}
+			// Can't do anything with a module that's not downloaded.
+			continue
+		}
+		r.ModsByModPath = append(r.ModsByModPath, mod)
+		r.ModsByDir = append(r.ModsByDir, mod)
+		if mod.Main {
+			r.Main = mod
+		}
+	}
+
+	sort.Slice(r.ModsByModPath, func(i, j int) bool {
+		count := func(x int) int {
+			return strings.Count(r.ModsByModPath[x].Path, "/")
+		}
+		return count(j) < count(i) // descending order
+	})
+	sort.Slice(r.ModsByDir, func(i, j int) bool {
+		count := func(x int) int {
+			return strings.Count(r.ModsByDir[x].Dir, "/")
+		}
+		return count(j) < count(i) // descending order
+	})
+
+	if r.moduleCacheInfo == nil {
+		r.moduleCacheInfo = &moduleCacheInfo{
+			modCacheDirInfo: make(map[string]*directoryPackageInfo),
+		}
+	}
+
+	r.Initialized = true
+	return nil
+}
+
+// findPackage returns the module and directory that contains the package at
+// the given import path, or returns nil, "" if no module is in scope.
+func (r *ModuleResolver) findPackage(importPath string) (*ModuleJSON, string) {
+	for _, m := range r.ModsByModPath {
+		if !strings.HasPrefix(importPath, m.Path) {
+			continue
+		}
+		pathInModule := importPath[len(m.Path):]
+		pkgDir := filepath.Join(m.Dir, pathInModule)
+		if r.dirIsNestedModule(pkgDir, m) {
+			continue
+		}
+
+		if info, ok := r.moduleCacheInfo.Load(pkgDir); ok {
+			if packageScanned, err := info.reachedStatus(directoryScanned); packageScanned {
+				if err != nil {
+					// There was some error with scanning this directory.
+					// It does not contain a valid package.
+					continue
+				}
+				return m, pkgDir
+			}
+		}
+
+		pkgFiles, err := ioutil.ReadDir(pkgDir)
+		if err != nil {
+			continue
+		}
+
+		// A module only contains a package if it has buildable go
+		// files in that directory. If not, it could be provided by an
+		// outer module. See #29736.
+		for _, fi := range pkgFiles {
+			if ok, _ := r.env.buildContext().MatchFile(pkgDir, fi.Name()); ok {
+				return m, pkgDir
+			}
+		}
+	}
+	return nil, ""
+}
+
+// findModuleByDir returns the module that contains dir, or nil if no such
+// module is in scope.
+func (r *ModuleResolver) findModuleByDir(dir string) *ModuleJSON {
+	// This is quite tricky and may not be correct. dir could be:
+	// - a package in the main module.
+	// - a replace target underneath the main module's directory.
+	//    - a nested module in the above.
+	// - a replace target somewhere totally random.
+	//    - a nested module in the above.
+	// - in the mod cache.
+	// - in /vendor/ in -mod=vendor mode.
+	//    - nested module? Dunno.
+	// Rumor has it that replace targets cannot contain other replace targets.
+	for _, m := range r.ModsByDir {
+		if !strings.HasPrefix(dir, m.Dir) {
+			continue
+		}
+
+		if r.dirIsNestedModule(dir, m) {
+			continue
+		}
+
+		return m
+	}
+	return nil
+}
+
+// dirIsNestedModule reports if dir is contained in a nested module underneath
+// mod, not actually in mod.
+func (r *ModuleResolver) dirIsNestedModule(dir string, mod *ModuleJSON) bool {
+	if !strings.HasPrefix(dir, mod.Dir) {
+		return false
+	}
+	if r.dirInModuleCache(dir) {
+		// Nested modules in the module cache are pruned,
+		// so it cannot be a nested module.
+		return false
+	}
+	mf := r.findModFile(dir)
+	if mf == "" {
+		return false
+	}
+	return filepath.Dir(mf) != mod.Dir
+}
+
+func (r *ModuleResolver) findModFile(dir string) string {
+	if r.dirInModuleCache(dir) {
+		matches := modCacheRegexp.FindStringSubmatch(dir)
+		index := strings.Index(dir, matches[1]+"@"+matches[2])
+		return filepath.Join(dir[:index], matches[1]+"@"+matches[2], "go.mod")
+	}
+	for {
+		f := filepath.Join(dir, "go.mod")
+		info, err := os.Stat(f)
+		if err == nil && !info.IsDir() {
+			return f
+		}
+		d := filepath.Dir(dir)
+		if len(d) >= len(dir) {
+			return "" // reached top of file system, no go.mod
+		}
+		dir = d
+	}
+}
+
+func (r *ModuleResolver) dirInModuleCache(dir string) bool {
+	if r.moduleCacheDir == "" {
+		return false
+	}
+	return strings.HasPrefix(dir, r.moduleCacheDir)
+}
+
+func (r *ModuleResolver) loadPackageNames(importPaths []string, srcDir string) (map[string]string, error) {
+	if err := r.init(); err != nil {
+		return nil, err
+	}
+	names := map[string]string{}
+	for _, path := range importPaths {
+		_, packageDir := r.findPackage(path)
+		if packageDir == "" {
+			continue
+		}
+		name, err := packageDirToName(packageDir)
+		if err != nil {
+			continue
+		}
+		names[path] = name
+	}
+	return names, nil
+}
+
+func (r *ModuleResolver) scan(_ references) ([]*pkg, error) {
+	if err := r.init(); err != nil {
+		return nil, err
+	}
+
+	// Walk GOROOT, GOPATH/pkg/mod, and the main module.
+	roots := []gopathwalk.Root{
+		{filepath.Join(r.env.GOROOT, "/src"), gopathwalk.RootGOROOT},
+	}
+	if r.Main != nil {
+		roots = append(roots, gopathwalk.Root{r.Main.Dir, gopathwalk.RootCurrentModule})
+	}
+	if r.moduleCacheDir == "" {
+		r.moduleCacheDir = filepath.Join(filepath.SplitList(r.env.GOPATH)[0], "/pkg/mod")
+	}
+	roots = append(roots, gopathwalk.Root{r.moduleCacheDir, gopathwalk.RootModuleCache})
+
+	// Walk replace targets, just in case they're not in any of the above.
+	for _, mod := range r.ModsByModPath {
+		if mod.Replace != nil {
+			roots = append(roots, gopathwalk.Root{mod.Dir, gopathwalk.RootOther})
+		}
+	}
+
+	var result []*pkg
+	dupCheck := make(map[string]bool)
+	var mu sync.Mutex
+
+	// Packages in the module cache are immutable. If we have
+	// already seen this package on a previous scan of the module
+	// cache, return that result.
+	skip := func(root gopathwalk.Root, dir string) bool {
+		mu.Lock()
+		defer mu.Unlock()
+		// If we have already processed this directory on this walk, skip it.
+		if _, dup := dupCheck[dir]; dup {
+			return true
+		}
+
+		// If we have saved this directory information, skip it.
+		info, ok := r.moduleCacheInfo.Load(dir)
+		if !ok {
+			return false
+		}
+		// This directory can be skipped as long as we have already scanned it.
+		// Packages with errors will continue to have errors, so there is no need
+		// to rescan them.
+		packageScanned, _ := info.reachedStatus(directoryScanned)
+		return packageScanned
+	}
+
+	add := func(root gopathwalk.Root, dir string) {
+		mu.Lock()
+		defer mu.Unlock()
+		if _, dup := dupCheck[dir]; dup {
+			return
+		}
+
+		info, err := r.scanDirForPackage(root, dir)
+		if err != nil {
+			return
+		}
+		if root.Type == gopathwalk.RootModuleCache {
+			// Save this package information in the cache and return.
+			// Packages from the module cache are added after Walk.
+			r.moduleCacheInfo.Store(dir, info)
+			return
+		}
+
+		// Skip this package if there was an error loading package info.
+		if info.err != nil {
+			return
+		}
+
+		// The rest of this function canonicalizes the packages using the results
+		// of initializing the resolver from 'go list -m'.
+		res, err := r.canonicalize(info.nonCanonicalImportPath, info.dir, info.needsReplace)
+		if err != nil {
+			return
+		}
+
+		result = append(result, res)
+	}
+
+	gopathwalk.WalkSkip(roots, add, skip, gopathwalk.Options{Debug: r.env.Debug, ModulesEnabled: true})
+
+	// Add the packages from the modules in the mod cache that were skipped.
+	for _, dir := range r.moduleCacheInfo.Keys() {
+		info, ok := r.moduleCacheInfo.Load(dir)
+		if !ok {
+			continue
+		}
+
+		// Skip this directory if we were not able to get the package information successfully.
+		if scanned, err := info.reachedStatus(directoryScanned); !scanned || err != nil {
+			continue
+		}
+
+		res, err := r.canonicalize(info.nonCanonicalImportPath, info.dir, info.needsReplace)
+		if err != nil {
+			continue
+		}
+		result = append(result, res)
+	}
+
+	return result, nil
+}
+
+// canonicalize gets the result of canonicalizing the packages using the results
+// of initializing the resolver from 'go list -m'.
+func (r *ModuleResolver) canonicalize(importPath, dir string, needsReplace bool) (res *pkg, err error) {
+	// Check if the directory is underneath a module that's in scope.
+	if mod := r.findModuleByDir(dir); mod != nil {
+		// It is. If dir is the target of a replace directive,
+		// our guessed import path is wrong. Use the real one.
+		if mod.Dir == dir {
+			importPath = mod.Path
+		} else {
+			dirInMod := dir[len(mod.Dir)+len("/"):]
+			importPath = path.Join(mod.Path, filepath.ToSlash(dirInMod))
+		}
+	} else if needsReplace {
+		return nil, fmt.Errorf("needed this package to be in scope: %s", dir)
+	}
+
+	// We may have discovered a package that has a different version
+	// in scope already. Canonicalize to that one if possible.
+	if _, canonicalDir := r.findPackage(importPath); canonicalDir != "" {
+		dir = canonicalDir
+	}
+	return &pkg{
+		importPathShort: VendorlessPath(importPath),
+		dir:             dir,
+	}, nil
+}
+
+func (r *ModuleResolver) loadExports(ctx context.Context, expectPackage string, pkg *pkg) (map[string]bool, error) {
+	if err := r.init(); err != nil {
+		return nil, err
+	}
+	return loadExportsFromFiles(ctx, r.env, expectPackage, pkg.dir)
+}
+
+func (r *ModuleResolver) scanDirForPackage(root gopathwalk.Root, dir string) (directoryPackageInfo, error) {
+	subdir := ""
+	if dir != root.Path {
+		subdir = dir[len(root.Path)+len("/"):]
+	}
+	importPath := filepath.ToSlash(subdir)
+	if strings.HasPrefix(importPath, "vendor/") {
+		// Ignore vendor dirs. If -mod=vendor is on, then things
+		// should mostly just work, but when it's not vendor/
+		// is a mess. There's no easy way to tell if it's on.
+		// We can still find things in the mod cache and
+		// map them into /vendor when -mod=vendor is on.
+		return directoryPackageInfo{}, fmt.Errorf("vendor directory")
+	}
+	switch root.Type {
+	case gopathwalk.RootCurrentModule:
+		importPath = path.Join(r.Main.Path, filepath.ToSlash(subdir))
+	case gopathwalk.RootModuleCache:
+		matches := modCacheRegexp.FindStringSubmatch(subdir)
+		modPath, err := module.DecodePath(filepath.ToSlash(matches[1]))
+		if err != nil {
+			if r.env.Debug {
+				r.env.Logf("decoding module cache path %q: %v", subdir, err)
+			}
+			return directoryPackageInfo{
+				status: directoryScanned,
+				err:    fmt.Errorf("decoding module cache path %q: %v", subdir, err),
+			}, nil
+		}
+		importPath = path.Join(modPath, filepath.ToSlash(matches[3]))
+	case gopathwalk.RootGOROOT:
+		importPath = subdir
+	}
+
+	// Check that this package is not obviously impossible to import.
+	modFile := r.findModFile(dir)
+
+	var needsReplace bool
+	modBytes, err := ioutil.ReadFile(modFile)
+	if err == nil && !strings.HasPrefix(importPath, modulePath(modBytes)) {
+		// The module's declared path does not match
+		// its expected path. It probably needs a
+		// replace directive we don't have.
+		needsReplace = true
+	}
+
+	return directoryPackageInfo{
+		status:                 directoryScanned,
+		dir:                    dir,
+		nonCanonicalImportPath: importPath,
+		needsReplace:           needsReplace,
+	}, nil
+}
+
+// modCacheRegexp splits a path in a module cache into module, module version, and package.
+var modCacheRegexp = regexp.MustCompile(`(.*)@([^/\\]*)(.*)`)
+
+var (
+	slashSlash = []byte("//")
+	moduleStr  = []byte("module")
+)
+
+// modulePath returns the module path from the gomod file text.
+// If it cannot find a module path, it returns an empty string.
+// It is tolerant of unrelated problems in the go.mod file.
+//
+// Copied from cmd/go/internal/modfile.
+func modulePath(mod []byte) string {
+	for len(mod) > 0 {
+		line := mod
+		mod = nil
+		if i := bytes.IndexByte(line, '\n'); i >= 0 {
+			line, mod = line[:i], line[i+1:]
+		}
+		if i := bytes.Index(line, slashSlash); i >= 0 {
+			line = line[:i]
+		}
+		line = bytes.TrimSpace(line)
+		if !bytes.HasPrefix(line, moduleStr) {
+			continue
+		}
+		line = line[len(moduleStr):]
+		n := len(line)
+		line = bytes.TrimSpace(line)
+		if len(line) == n || len(line) == 0 {
+			continue
+		}
+
+		if line[0] == '"' || line[0] == '`' {
+			p, err := strconv.Unquote(string(line))
+			if err != nil {
+				return "" // malformed quoted string or multiline module path
+			}
+			return p
+		}
+
+		return string(line)
+	}
+	return "" // missing module path
+}
diff --git a/vendor/golang.org/x/tools/internal/imports/mod_cache.go b/vendor/golang.org/x/tools/internal/imports/mod_cache.go
new file mode 100644
index 0000000000..f96b92d009
--- /dev/null
+++ b/vendor/golang.org/x/tools/internal/imports/mod_cache.go
@@ -0,0 +1,121 @@
+package imports
+
+import (
+	"sync"
+)
+
+// ModuleResolver implements Resolver for modules using the go command as little
+// as feasible.
+//
+// To find packages to import, the resolver needs to know about all of the
+// the packages that could be imported. This includes packages that are
+// already in modules that are in (1) the current module, (2) replace targets,
+// and (3) packages in the module cache. Packages in (1) and (2) may change over
+// time, as the client may edit the current module and locally replaced modules.
+// The module cache (which includes all of the packages in (3)) can only
+// ever be added to.
+//
+// The resolver can thus save state about packages in the module cache
+// and guarantee that this will not change over time. To obtain information
+// about new modules added to the module cache, the module cache should be
+// rescanned.
+//
+// It is OK to serve information about modules that have been deleted,
+// as they do still exist.
+// TODO(suzmue): can we share information with the caller about
+// what module needs to be downloaded to import this package?
+
+type directoryPackageStatus int
+
+const (
+	_ directoryPackageStatus = iota
+	directoryScanned
+)
+
+type directoryPackageInfo struct {
+	// status indicates the extent to which this struct has been filled in.
+	status directoryPackageStatus
+	// err is non-nil when there was an error trying to reach status.
+	err error
+
+	// Set when status > directoryScanned.
+
+	// dir is the absolute directory of this package.
+	dir string
+	// nonCanonicalImportPath is the expected import path for this package.
+	// This may not be an import path that can be used to import this package.
+	nonCanonicalImportPath string
+	// needsReplace is true if the nonCanonicalImportPath does not match the
+	// the modules declared path, making it impossible to import without a
+	// replace directive.
+	needsReplace bool
+}
+
+// reachedStatus returns true when info has a status at least target and any error associated with
+// an attempt to reach target.
+func (info *directoryPackageInfo) reachedStatus(target directoryPackageStatus) (bool, error) {
+	if info.err == nil {
+		return info.status >= target, nil
+	}
+	if info.status == target {
+		return true, info.err
+	}
+	return true, nil
+}
+
+// moduleCacheInfo is a concurrency safe map for storing information about
+// the directories in the module cache.
+//
+// The information in this cache is built incrementally. Entries are initialized in scan.
+// No new keys should be added in any other functions, as all directories containing
+// packages are identified in scan.
+//
+// Other functions, including loadExports and findPackage, may update entries in this cache
+// as they discover new things about the directory.
+//
+// We do not need to protect the data in the cache for multiple writes, because it only stores
+// module cache directories, which do not change. If two competing stores take place, there will be
+// one store that wins. Although this could result in a loss of information it will not be incorrect
+// and may just result in recomputing the same result later.
+//
+// TODO(suzmue): consider other concurrency strategies and data structures (RWLocks, sync.Map, etc)
+type moduleCacheInfo struct {
+	mu sync.Mutex
+	// modCacheDirInfo stores information about packages in
+	// module cache directories. Keyed by absolute directory.
+	modCacheDirInfo map[string]*directoryPackageInfo
+}
+
+// Store stores the package info for dir.
+func (d *moduleCacheInfo) Store(dir string, info directoryPackageInfo) {
+	d.mu.Lock()
+	defer d.mu.Unlock()
+	d.modCacheDirInfo[dir] = &directoryPackageInfo{
+		status:                 info.status,
+		err:                    info.err,
+		dir:                    info.dir,
+		nonCanonicalImportPath: info.nonCanonicalImportPath,
+		needsReplace:           info.needsReplace,
+	}
+}
+
+// Load returns a copy of the directoryPackageInfo for absolute directory dir.
+func (d *moduleCacheInfo) Load(dir string) (directoryPackageInfo, bool) {
+	d.mu.Lock()
+	defer d.mu.Unlock()
+	info, ok := d.modCacheDirInfo[dir]
+	if !ok {
+		return directoryPackageInfo{}, false
+	}
+	return *info, true
+}
+
+// Keys returns the keys currently present in d.
+func (d *moduleCacheInfo) Keys() (keys []string) {
+	d.mu.Lock()
+	defer d.mu.Unlock()
+	for key := range d.modCacheDirInfo {
+		keys = append(keys, key)
+	}
+	return keys
+}
diff --git a/vendor/golang.org/x/tools/internal/imports/sortimports.go b/vendor/golang.org/x/tools/internal/imports/sortimports.go
new file mode 100644
index 0000000000..226279471d
--- /dev/null
+++ b/vendor/golang.org/x/tools/internal/imports/sortimports.go
@@ -0,0 +1,280 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Hacked up copy of go/ast/import.go
+
+package imports
+
+import (
+	"go/ast"
+	"go/token"
+	"sort"
+	"strconv"
+)
+
+// sortImports sorts runs of consecutive import lines in import blocks in f.
+// It also removes duplicate imports when it is possible to do so without data loss.
+func sortImports(env *ProcessEnv, fset *token.FileSet, f *ast.File) {
+	for i, d := range f.Decls {
+		d, ok := d.(*ast.GenDecl)
+		if !ok || d.Tok != token.IMPORT {
+			// Not an import declaration, so we're done.
+			// Imports are always first.
+			break
+		}
+
+		if len(d.Specs) == 0 {
+			// Empty import block, remove it.
+			f.Decls = append(f.Decls[:i], f.Decls[i+1:]...)
+		}
+
+		if !d.Lparen.IsValid() {
+			// Not a block: sorted by default.
+			continue
+		}
+
+		// Identify and sort runs of specs on successive lines.
+		i := 0
+		specs := d.Specs[:0]
+		for j, s := range d.Specs {
+			if j > i && fset.Position(s.Pos()).Line > 1+fset.Position(d.Specs[j-1].End()).Line {
+				// j begins a new run.  End this one.
+				specs = append(specs, sortSpecs(env, fset, f, d.Specs[i:j])...)
+				i = j
+			}
+		}
+		specs = append(specs, sortSpecs(env, fset, f, d.Specs[i:])...)
+		d.Specs = specs
+
+		// Deduping can leave a blank line before the rparen; clean that up.
+		if len(d.Specs) > 0 {
+			lastSpec := d.Specs[len(d.Specs)-1]
+			lastLine := fset.Position(lastSpec.Pos()).Line
+			if rParenLine := fset.Position(d.Rparen).Line; rParenLine > lastLine+1 {
+				fset.File(d.Rparen).MergeLine(rParenLine - 1)
+			}
+		}
+	}
+}
+
+// mergeImports merges all the import declarations into the first one.
+// Taken from golang.org/x/tools/ast/astutil.
+func mergeImports(env *ProcessEnv, fset *token.FileSet, f *ast.File) {
+	if len(f.Decls) <= 1 {
+		return
+	}
+
+	// Merge all the import declarations into the first one.
+	var first *ast.GenDecl
+	for i := 0; i < len(f.Decls); i++ {
+		decl := f.Decls[i]
+		gen, ok := decl.(*ast.GenDecl)
+		if !ok || gen.Tok != token.IMPORT || declImports(gen, "C") {
+			continue
+		}
+		if first == nil {
+			first = gen
+			continue // Don't touch the first one.
+		}
+		// We now know there is more than one package in this import
+		// declaration. Ensure that it ends up parenthesized.
+		first.Lparen = first.Pos()
+		// Move the imports of the other import declaration to the first one.
+		for _, spec := range gen.Specs {
+			spec.(*ast.ImportSpec).Path.ValuePos = first.Pos()
+			first.Specs = append(first.Specs, spec)
+		}
+		f.Decls = append(f.Decls[:i], f.Decls[i+1:]...)
+		i--
+	}
+}
+
+// declImports reports whether gen contains an import of path.
+// Taken from golang.org/x/tools/ast/astutil.
+func declImports(gen *ast.GenDecl, path string) bool {
+	if gen.Tok != token.IMPORT {
+		return false
+	}
+	for _, spec := range gen.Specs {
+		impspec := spec.(*ast.ImportSpec)
+		if importPath(impspec) == path {
+			return true
+		}
+	}
+	return false
+}
+
+func importPath(s ast.Spec) string {
+	t, err := strconv.Unquote(s.(*ast.ImportSpec).Path.Value)
+	if err == nil {
+		return t
+	}
+	return ""
+}
+
+func importName(s ast.Spec) string {
+	n := s.(*ast.ImportSpec).Name
+	if n == nil {
+		return ""
+	}
+	return n.Name
+}
+
+func importComment(s ast.Spec) string {
+	c := s.(*ast.ImportSpec).Comment
+	if c == nil {
+		return ""
+	}
+	return c.Text()
+}
+
+// collapse indicates whether prev may be removed, leaving only next.
+func collapse(prev, next ast.Spec) bool {
+	if importPath(next) != importPath(prev) || importName(next) != importName(prev) {
+		return false
+	}
+	return prev.(*ast.ImportSpec).Comment == nil
+}
+
+type posSpan struct {
+	Start token.Pos
+	End   token.Pos
+}
+
+func sortSpecs(env *ProcessEnv, fset *token.FileSet, f *ast.File, specs []ast.Spec) []ast.Spec {
+	// Can't short-circuit here even if specs are already sorted,
+	// since they might yet need deduplication.
+	// A lone import, however, may be safely ignored.
+	if len(specs) <= 1 {
+		return specs
+	}
+
+	// Record positions for specs.
+	pos := make([]posSpan, len(specs))
+	for i, s := range specs {
+		pos[i] = posSpan{s.Pos(), s.End()}
+	}
+
+	// Identify comments in this range.
+	// Any comment from pos[0].Start to the final line counts.
+	lastLine := fset.Position(pos[len(pos)-1].End).Line
+	cstart := len(f.Comments)
+	cend := len(f.Comments)
+	for i, g := range f.Comments {
+		if g.Pos() < pos[0].Start {
+			continue
+		}
+		if i < cstart {
+			cstart = i
+		}
+		if fset.Position(g.End()).Line > lastLine {
+			cend = i
+			break
+		}
+	}
+	comments := f.Comments[cstart:cend]
+
+	// Assign each comment to the import spec preceding it.
+	importComment := map[*ast.ImportSpec][]*ast.CommentGroup{}
+	specIndex := 0
+	for _, g := range comments {
+		for specIndex+1 < len(specs) && pos[specIndex+1].Start <= g.Pos() {
+			specIndex++
+		}
+		s := specs[specIndex].(*ast.ImportSpec)
+		importComment[s] = append(importComment[s], g)
+	}
+
+	// Sort the import specs by import path.
+	// Remove duplicates, when possible without data loss.
+	// Reassign the import paths to have the same position sequence.
+	// Reassign each comment to abut the end of its spec.
+	// Sort the comments by new position.
+	sort.Sort(byImportSpec{env, specs})
+
+	// Dedup. Thanks to our sorting, we can just consider
+	// adjacent pairs of imports.
+	deduped := specs[:0]
+	for i, s := range specs {
+		if i == len(specs)-1 || !collapse(s, specs[i+1]) {
+			deduped = append(deduped, s)
+		} else {
+			p := s.Pos()
+			fset.File(p).MergeLine(fset.Position(p).Line)
+		}
+	}
+	specs = deduped
+
+	// Fix up comment positions
+	for i, s := range specs {
+		s := s.(*ast.ImportSpec)
+		if s.Name != nil {
+			s.Name.NamePos = pos[i].Start
+		}
+		s.Path.ValuePos = pos[i].Start
+		s.EndPos = pos[i].End
+		nextSpecPos := pos[i].End
+
+		for _, g := range importComment[s] {
+			for _, c := range g.List {
+				c.Slash = pos[i].End
+				nextSpecPos = c.End()
+			}
+		}
+		if i < len(specs)-1 {
+			pos[i+1].Start = nextSpecPos
+			pos[i+1].End = nextSpecPos
+		}
+	}
+
+	sort.Sort(byCommentPos(comments))
+
+	// Fixup comments can insert blank lines, because import specs are on different lines.
+	// We remove those blank lines here by merging import spec to the first import spec line.
+	firstSpecLine := fset.Position(specs[0].Pos()).Line
+	for _, s := range specs[1:] {
+		p := s.Pos()
+		line := fset.File(p).Line(p)
+		for previousLine := line - 1; previousLine >= firstSpecLine; {
+			fset.File(p).MergeLine(previousLine)
+			previousLine--
+		}
+	}
+	return specs
+}
+
+type byImportSpec struct {
+	env   *ProcessEnv
+	specs []ast.Spec // slice of *ast.ImportSpec
+}
+
+func (x byImportSpec) Len() int      { return len(x.specs) }
+func (x byImportSpec) Swap(i, j int) { x.specs[i], x.specs[j] = x.specs[j], x.specs[i] }
+func (x byImportSpec) Less(i, j int) bool {
+	ipath := importPath(x.specs[i])
+	jpath := importPath(x.specs[j])
+
+	igroup := importGroup(x.env, ipath)
+	jgroup := importGroup(x.env, jpath)
+	if igroup != jgroup {
+		return igroup < jgroup
+	}
+
+	if ipath != jpath {
+		return ipath < jpath
+	}
+	iname := importName(x.specs[i])
+	jname := importName(x.specs[j])
+
+	if iname != jname {
+		return iname < jname
+	}
+	return importComment(x.specs[i]) < importComment(x.specs[j])
+}
+
+type byCommentPos []*ast.CommentGroup
+
+func (x byCommentPos) Len() int           { return len(x) }
+func (x byCommentPos) Swap(i, j int)      { x[i], x[j] = x[j], x[i] }
+func (x byCommentPos) Less(i, j int) bool { return x[i].Pos() < x[j].Pos() }
diff --git a/vendor/golang.org/x/tools/internal/imports/zstdlib.go b/vendor/golang.org/x/tools/internal/imports/zstdlib.go
new file mode 100644
index 0000000000..d81b8c5307
--- /dev/null
+++ b/vendor/golang.org/x/tools/internal/imports/zstdlib.go
@@ -0,0 +1,10325 @@
+// Code generated by mkstdlib.go. DO NOT EDIT.
+
+package imports
+
+var stdlib = map[string]map[string]bool{
+	"archive/tar": map[string]bool{
+		"ErrFieldTooLong":    true,
+		"ErrHeader":          true,
+		"ErrWriteAfterClose": true,
+		"ErrWriteTooLong":    true,
+		"FileInfoHeader":     true,
+		"Format":             true,
+		"FormatGNU":          true,
+		"FormatPAX":          true,
+		"FormatUSTAR":        true,
+		"FormatUnknown":      true,
+		"Header":             true,
+		"NewReader":          true,
+		"NewWriter":          true,
+		"Reader":             true,
+		"TypeBlock":          true,
+		"TypeChar":           true,
+		"TypeCont":           true,
+		"TypeDir":            true,
+		"TypeFifo":           true,
+		"TypeGNULongLink":    true,
+		"TypeGNULongName":    true,
+		"TypeGNUSparse":      true,
+		"TypeLink":           true,
+		"TypeReg":            true,
+		"TypeRegA":           true,
+		"TypeSymlink":        true,
+		"TypeXGlobalHeader":  true,
+		"TypeXHeader":        true,
+		"Writer":             true,
+	},
+	"archive/zip": map[string]bool{
+		"Compressor":           true,
+		"Decompressor":         true,
+		"Deflate":              true,
+		"ErrAlgorithm":         true,
+		"ErrChecksum":          true,
+		"ErrFormat":            true,
+		"File":                 true,
+		"FileHeader":           true,
+		"FileInfoHeader":       true,
+		"NewReader":            true,
+		"NewWriter":            true,
+		"OpenReader":           true,
+		"ReadCloser":           true,
+		"Reader":               true,
+		"RegisterCompressor":   true,
+		"RegisterDecompressor": true,
+		"Store":                true,
+		"Writer":               true,
+	},
+	"bufio": map[string]bool{
+		"ErrAdvanceTooFar":     true,
+		"ErrBufferFull":        true,
+		"ErrFinalToken":        true,
+		"ErrInvalidUnreadByte": true,
+		"ErrInvalidUnreadRune": true,
+		"ErrNegativeAdvance":   true,
+		"ErrNegativeCount":     true,
+		"ErrTooLong":           true,
+		"MaxScanTokenSize":     true,
+		"NewReadWriter":        true,
+		"NewReader":            true,
+		"NewReaderSize":        true,
+		"NewScanner":           true,
+		"NewWriter":            true,
+		"NewWriterSize":        true,
+		"ReadWriter":           true,
+		"Reader":               true,
+		"ScanBytes":            true,
+		"ScanLines":            true,
+		"ScanRunes":            true,
+		"ScanWords":            true,
+		"Scanner":              true,
+		"SplitFunc":            true,
+		"Writer":               true,
+	},
+	"bytes": map[string]bool{
+		"Buffer":          true,
+		"Compare":         true,
+		"Contains":        true,
+		"ContainsAny":     true,
+		"ContainsRune":    true,
+		"Count":           true,
+		"Equal":           true,
+		"EqualFold":       true,
+		"ErrTooLarge":     true,
+		"Fields":          true,
+		"FieldsFunc":      true,
+		"HasPrefix":       true,
+		"HasSuffix":       true,
+		"Index":           true,
+		"IndexAny":        true,
+		"IndexByte":       true,
+		"IndexFunc":       true,
+		"IndexRune":       true,
+		"Join":            true,
+		"LastIndex":       true,
+		"LastIndexAny":    true,
+		"LastIndexByte":   true,
+		"LastIndexFunc":   true,
+		"Map":             true,
+		"MinRead":         true,
+		"NewBuffer":       true,
+		"NewBufferString": true,
+		"NewReader":       true,
+		"Reader":          true,
+		"Repeat":          true,
+		"Replace":         true,
+		"ReplaceAll":      true,
+		"Runes":           true,
+		"Split":           true,
+		"SplitAfter":      true,
+		"SplitAfterN":     true,
+		"SplitN":          true,
+		"Title":           true,
+		"ToLower":         true,
+		"ToLowerSpecial":  true,
+		"ToTitle":         true,
+		"ToTitleSpecial":  true,
+		"ToUpper":         true,
+		"ToUpperSpecial":  true,
+		"Trim":            true,
+		"TrimFunc":        true,
+		"TrimLeft":        true,
+		"TrimLeftFunc":    true,
+		"TrimPrefix":      true,
+		"TrimRight":       true,
+		"TrimRightFunc":   true,
+		"TrimSpace":       true,
+		"TrimSuffix":      true,
+	},
+	"compress/bzip2": map[string]bool{
+		"NewReader":       true,
+		"StructuralError": true,
+	},
+	"compress/flate": map[string]bool{
+		"BestCompression":    true,
+		"BestSpeed":          true,
+		"CorruptInputError":  true,
+		"DefaultCompression": true,
+		"HuffmanOnly":        true,
+		"InternalError":      true,
+		"NewReader":          true,
+		"NewReaderDict":      true,
+		"NewWriter":          true,
+		"NewWriterDict":      true,
+		"NoCompression":      true,
+		"ReadError":          true,
+		"Reader":             true,
+		"Resetter":           true,
+		"WriteError":         true,
+		"Writer":             true,
+	},
+	"compress/gzip": map[string]bool{
+		"BestCompression":    true,
+		"BestSpeed":          true,
+		"DefaultCompression": true,
+		"ErrChecksum":        true,
+		"ErrHeader":          true,
+		"Header":             true,
+		"HuffmanOnly":        true,
+		"NewReader":          true,
+		"NewWriter":          true,
+		"NewWriterLevel":     true,
+		"NoCompression":      true,
+		"Reader":             true,
+		"Writer":             true,
+	},
+	"compress/lzw": map[string]bool{
+		"LSB":       true,
+		"MSB":       true,
+		"NewReader": true,
+		"NewWriter": true,
+		"Order":     true,
+	},
+	"compress/zlib": map[string]bool{
+		"BestCompression":    true,
+		"BestSpeed":          true,
+		"DefaultCompression": true,
+		"ErrChecksum":        true,
+		"ErrDictionary":      true,
+		"ErrHeader":          true,
+		"HuffmanOnly":        true,
+		"NewReader":          true,
+		"NewReaderDict":      true,
+		"NewWriter":          true,
+		"NewWriterLevel":     true,
+		"NewWriterLevelDict": true,
+		"NoCompression":      true,
+		"Resetter":           true,
+		"Writer":             true,
+	},
+	"container/heap": map[string]bool{
+		"Fix":       true,
+		"Init":      true,
+		"Interface": true,
+		"Pop":       true,
+		"Push":      true,
+		"Remove":    true,
+	},
+	"container/list": map[string]bool{
+		"Element": true,
+		"List":    true,
+		"New":     true,
+	},
+	"container/ring": map[string]bool{
+		"New":  true,
+		"Ring": true,
+	},
+	"context": map[string]bool{
+		"Background":       true,
+		"CancelFunc":       true,
+		"Canceled":         true,
+		"Context":          true,
+		"DeadlineExceeded": true,
+		"TODO":             true,
+		"WithCancel":       true,
+		"WithDeadline":     true,
+		"WithTimeout":      true,
+		"WithValue":        true,
+	},
+	"crypto": map[string]bool{
+		"BLAKE2b_256":   true,
+		"BLAKE2b_384":   true,
+		"BLAKE2b_512":   true,
+		"BLAKE2s_256":   true,
+		"Decrypter":     true,
+		"DecrypterOpts": true,
+		"Hash":          true,
+		"MD4":           true,
+		"MD5":           true,
+		"MD5SHA1":       true,
+		"PrivateKey":    true,
+		"PublicKey":     true,
+		"RIPEMD160":     true,
+		"RegisterHash":  true,
+		"SHA1":          true,
+		"SHA224":        true,
+		"SHA256":        true,
+		"SHA384":        true,
+		"SHA3_224":      true,
+		"SHA3_256":      true,
+		"SHA3_384":      true,
+		"SHA3_512":      true,
+		"SHA512":        true,
+		"SHA512_224":    true,
+		"SHA512_256":    true,
+		"Signer":        true,
+		"SignerOpts":    true,
+	},
+	"crypto/aes": map[string]bool{
+		"BlockSize":    true,
+		"KeySizeError": true,
+		"NewCipher":    true,
+	},
+	"crypto/cipher": map[string]bool{
+		"AEAD":                true,
+		"Block":               true,
+		"BlockMode":           true,
+		"NewCBCDecrypter":     true,
+		"NewCBCEncrypter":     true,
+		"NewCFBDecrypter":     true,
+		"NewCFBEncrypter":     true,
+		"NewCTR":              true,
+		"NewGCM":              true,
+		"NewGCMWithNonceSize": true,
+		"NewGCMWithTagSize":   true,
+		"NewOFB":              true,
+		"Stream":              true,
+		"StreamReader":        true,
+		"StreamWriter":        true,
+	},
+	"crypto/des": map[string]bool{
+		"BlockSize":          true,
+		"KeySizeError":       true,
+		"NewCipher":          true,
+		"NewTripleDESCipher": true,
+	},
+	"crypto/dsa": map[string]bool{
+		"ErrInvalidPublicKey": true,
+		"GenerateKey":         true,
+		"GenerateParameters":  true,
+		"L1024N160":           true,
+		"L2048N224":           true,
+		"L2048N256":           true,
+		"L3072N256":           true,
+		"ParameterSizes":      true,
+		"Parameters":          true,
+		"PrivateKey":          true,
+		"PublicKey":           true,
+		"Sign":                true,
+		"Verify":              true,
+	},
+	"crypto/ecdsa": map[string]bool{
+		"GenerateKey": true,
+		"PrivateKey":  true,
+		"PublicKey":   true,
+		"Sign":        true,
+		"Verify":      true,
+	},
+	"crypto/elliptic": map[string]bool{
+		"Curve":       true,
+		"CurveParams": true,
+		"GenerateKey": true,
+		"Marshal":     true,
+		"P224":        true,
+		"P256":        true,
+		"P384":        true,
+		"P521":        true,
+		"Unmarshal":   true,
+	},
+	"crypto/hmac": map[string]bool{
+		"Equal": true,
+		"New":   true,
+	},
+	"crypto/md5": map[string]bool{
+		"BlockSize": true,
+		"New":       true,
+		"Size":      true,
+		"Sum":       true,
+	},
+	"crypto/rand": map[string]bool{
+		"Int":    true,
+		"Prime":  true,
+		"Read":   true,
+		"Reader": true,
+	},
+	"crypto/rc4": map[string]bool{
+		"Cipher":       true,
+		"KeySizeError": true,
+		"NewCipher":    true,
+	},
+	"crypto/rsa": map[string]bool{
+		"CRTValue":                  true,
+		"DecryptOAEP":               true,
+		"DecryptPKCS1v15":           true,
+		"DecryptPKCS1v15SessionKey": true,
+		"EncryptOAEP":               true,
+		"EncryptPKCS1v15":           true,
+		"ErrDecryption":             true,
+		"ErrMessageTooLong":         true,
+		"ErrVerification":           true,
+		"GenerateKey":               true,
+		"GenerateMultiPrimeKey":     true,
+		"OAEPOptions":               true,
+		"PKCS1v15DecryptOptions":    true,
+		"PSSOptions":                true,
+		"PSSSaltLengthAuto":         true,
+		"PSSSaltLengthEqualsHash":   true,
+		"PrecomputedValues":         true,
+		"PrivateKey":                true,
+		"PublicKey":                 true,
+		"SignPKCS1v15":              true,
+		"SignPSS":                   true,
+		"VerifyPKCS1v15":            true,
+		"VerifyPSS":                 true,
+	},
+	"crypto/sha1": map[string]bool{
+		"BlockSize": true,
+		"New":       true,
+		"Size":      true,
+		"Sum":       true,
+	},
+	"crypto/sha256": map[string]bool{
+		"BlockSize": true,
+		"New":       true,
+		"New224":    true,
+		"Size":      true,
+		"Size224":   true,
+		"Sum224":    true,
+		"Sum256":    true,
+	},
+	"crypto/sha512": map[string]bool{
+		"BlockSize":  true,
+		"New":        true,
+		"New384":     true,
+		"New512_224": true,
+		"New512_256": true,
+		"Size":       true,
+		"Size224":    true,
+		"Size256":    true,
+		"Size384":    true,
+		"Sum384":     true,
+		"Sum512":     true,
+		"Sum512_224": true,
+		"Sum512_256": true,
+	},
+	"crypto/subtle": map[string]bool{
+		"ConstantTimeByteEq":   true,
+		"ConstantTimeCompare":  true,
+		"ConstantTimeCopy":     true,
+		"ConstantTimeEq":       true,
+		"ConstantTimeLessOrEq": true,
+		"ConstantTimeSelect":   true,
+	},
+	"crypto/tls": map[string]bool{
+		"Certificate":                          true,
+		"CertificateRequestInfo":               true,
+		"Client":                               true,
+		"ClientAuthType":                       true,
+		"ClientHelloInfo":                      true,
+		"ClientSessionCache":                   true,
+		"ClientSessionState":                   true,
+		"Config":                               true,
+		"Conn":                                 true,
+		"ConnectionState":                      true,
+		"CurveID":                              true,
+		"CurveP256":                            true,
+		"CurveP384":                            true,
+		"CurveP521":                            true,
+		"Dial":                                 true,
+		"DialWithDialer":                       true,
+		"ECDSAWithP256AndSHA256":               true,
+		"ECDSAWithP384AndSHA384":               true,
+		"ECDSAWithP521AndSHA512":               true,
+		"ECDSAWithSHA1":                        true,
+		"Listen":                               true,
+		"LoadX509KeyPair":                      true,
+		"NewLRUClientSessionCache":             true,
+		"NewListener":                          true,
+		"NoClientCert":                         true,
+		"PKCS1WithSHA1":                        true,
+		"PKCS1WithSHA256":                      true,
+		"PKCS1WithSHA384":                      true,
+		"PKCS1WithSHA512":                      true,
+		"PSSWithSHA256":                        true,
+		"PSSWithSHA384":                        true,
+		"PSSWithSHA512":                        true,
+		"RecordHeaderError":                    true,
+		"RenegotiateFreelyAsClient":            true,
+		"RenegotiateNever":                     true,
+		"RenegotiateOnceAsClient":              true,
+		"RenegotiationSupport":                 true,
+		"RequestClientCert":                    true,
+		"RequireAndVerifyClientCert":           true,
+		"RequireAnyClientCert":                 true,
+		"Server":                               true,
+		"SignatureScheme":                      true,
+		"TLS_AES_128_GCM_SHA256":               true,
+		"TLS_AES_256_GCM_SHA384":               true,
+		"TLS_CHACHA20_POLY1305_SHA256":         true,
+		"TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA": true,
+		"TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256": true,
+		"TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256": true,
+		"TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA":    true,
+		"TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384": true,
+		"TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305":  true,
+		"TLS_ECDHE_ECDSA_WITH_RC4_128_SHA":        true,
+		"TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA":     true,
+		"TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA":      true,
+		"TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256":   true,
+		"TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256":   true,
+		"TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA":      true,
+		"TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384":   true,
+		"TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305":    true,
+		"TLS_ECDHE_RSA_WITH_RC4_128_SHA":          true,
+		"TLS_FALLBACK_SCSV":                       true,
+		"TLS_RSA_WITH_3DES_EDE_CBC_SHA":           true,
+		"TLS_RSA_WITH_AES_128_CBC_SHA":            true,
+		"TLS_RSA_WITH_AES_128_CBC_SHA256":         true,
+		"TLS_RSA_WITH_AES_128_GCM_SHA256":         true,
+		"TLS_RSA_WITH_AES_256_CBC_SHA":            true,
+		"TLS_RSA_WITH_AES_256_GCM_SHA384":         true,
+		"TLS_RSA_WITH_RC4_128_SHA":                true,
+		"VerifyClientCertIfGiven":                 true,
+		"VersionSSL30":                            true,
+		"VersionTLS10":                            true,
+		"VersionTLS11":                            true,
+		"VersionTLS12":                            true,
+		"VersionTLS13":                            true,
+		"X25519":                                  true,
+		"X509KeyPair":                             true,
+	},
+	"crypto/x509": map[string]bool{
+		"CANotAuthorizedForExtKeyUsage":             true,
+		"CANotAuthorizedForThisName":                true,
+		"CertPool":                                  true,
+		"Certificate":                               true,
+		"CertificateInvalidError":                   true,
+		"CertificateRequest":                        true,
+		"ConstraintViolationError":                  true,
+		"CreateCertificate":                         true,
+		"CreateCertificateRequest":                  true,
+		"DSA":                                       true,
+		"DSAWithSHA1":                               true,
+		"DSAWithSHA256":                             true,
+		"DecryptPEMBlock":                           true,
+		"ECDSA":                                     true,
+		"ECDSAWithSHA1":                             true,
+		"ECDSAWithSHA256":                           true,
+		"ECDSAWithSHA384":                           true,
+		"ECDSAWithSHA512":                           true,
+		"EncryptPEMBlock":                           true,
+		"ErrUnsupportedAlgorithm":                   true,
+		"Expired":                                   true,
+		"ExtKeyUsage":                               true,
+		"ExtKeyUsageAny":                            true,
+		"ExtKeyUsageClientAuth":                     true,
+		"ExtKeyUsageCodeSigning":                    true,
+		"ExtKeyUsageEmailProtection":                true,
+		"ExtKeyUsageIPSECEndSystem":                 true,
+		"ExtKeyUsageIPSECTunnel":                    true,
+		"ExtKeyUsageIPSECUser":                      true,
+		"ExtKeyUsageMicrosoftCommercialCodeSigning": true,
+		"ExtKeyUsageMicrosoftKernelCodeSigning":     true,
+		"ExtKeyUsageMicrosoftServerGatedCrypto":     true,
+		"ExtKeyUsageNetscapeServerGatedCrypto":      true,
+		"ExtKeyUsageOCSPSigning":                    true,
+		"ExtKeyUsageServerAuth":                     true,
+		"ExtKeyUsageTimeStamping":                   true,
+		"HostnameError":                             true,
+		"IncompatibleUsage":                         true,
+		"IncorrectPasswordError":                    true,
+		"InsecureAlgorithmError":                    true,
+		"InvalidReason":                             true,
+		"IsEncryptedPEMBlock":                       true,
+		"KeyUsage":                                  true,
+		"KeyUsageCRLSign":                           true,
+		"KeyUsageCertSign":                          true,
+		"KeyUsageContentCommitment":                 true,
+		"KeyUsageDataEncipherment":                  true,
+		"KeyUsageDecipherOnly":                      true,
+		"KeyUsageDigitalSignature":                  true,
+		"KeyUsageEncipherOnly":                      true,
+		"KeyUsageKeyAgreement":                      true,
+		"KeyUsageKeyEncipherment":                   true,
+		"MD2WithRSA":                                true,
+		"MD5WithRSA":                                true,
+		"MarshalECPrivateKey":                       true,
+		"MarshalPKCS1PrivateKey":                    true,
+		"MarshalPKCS1PublicKey":                     true,
+		"MarshalPKCS8PrivateKey":                    true,
+		"MarshalPKIXPublicKey":                      true,
+		"NameConstraintsWithoutSANs":                true,
+		"NameMismatch":                              true,
+		"NewCertPool":                               true,
+		"NotAuthorizedToSign":                       true,
+		"PEMCipher":                                 true,
+		"PEMCipher3DES":                             true,
+		"PEMCipherAES128":                           true,
+		"PEMCipherAES192":                           true,
+		"PEMCipherAES256":                           true,
+		"PEMCipherDES":                              true,
+		"ParseCRL":                                  true,
+		"ParseCertificate":                          true,
+		"ParseCertificateRequest":                   true,
+		"ParseCertificates":                         true,
+		"ParseDERCRL":                               true,
+		"ParseECPrivateKey":                         true,
+		"ParsePKCS1PrivateKey":                      true,
+		"ParsePKCS1PublicKey":                       true,
+		"ParsePKCS8PrivateKey":                      true,
+		"ParsePKIXPublicKey":                        true,
+		"PublicKeyAlgorithm":                        true,
+		"RSA":                                       true,
+		"SHA1WithRSA":                               true,
+		"SHA256WithRSA":                             true,
+		"SHA256WithRSAPSS":                          true,
+		"SHA384WithRSA":                             true,
+		"SHA384WithRSAPSS":                          true,
+		"SHA512WithRSA":                             true,
+		"SHA512WithRSAPSS":                          true,
+		"SignatureAlgorithm":                        true,
+		"SystemCertPool":                            true,
+		"SystemRootsError":                          true,
+		"TooManyConstraints":                        true,
+		"TooManyIntermediates":                      true,
+		"UnconstrainedName":                         true,
+		"UnhandledCriticalExtension":                true,
+		"UnknownAuthorityError":                     true,
+		"UnknownPublicKeyAlgorithm":                 true,
+		"UnknownSignatureAlgorithm":                 true,
+		"VerifyOptions":                             true,
+	},
+	"crypto/x509/pkix": map[string]bool{
+		"AlgorithmIdentifier":          true,
+		"AttributeTypeAndValue":        true,
+		"AttributeTypeAndValueSET":     true,
+		"CertificateList":              true,
+		"Extension":                    true,
+		"Name":                         true,
+		"RDNSequence":                  true,
+		"RelativeDistinguishedNameSET": true,
+		"RevokedCertificate":           true,
+		"TBSCertificateList":           true,
+	},
+	"database/sql": map[string]bool{
+		"ColumnType":           true,
+		"Conn":                 true,
+		"DB":                   true,
+		"DBStats":              true,
+		"Drivers":              true,
+		"ErrConnDone":          true,
+		"ErrNoRows":            true,
+		"ErrTxDone":            true,
+		"IsolationLevel":       true,
+		"LevelDefault":         true,
+		"LevelLinearizable":    true,
+		"LevelReadCommitted":   true,
+		"LevelReadUncommitted": true,
+		"LevelRepeatableRead":  true,
+		"LevelSerializable":    true,
+		"LevelSnapshot":        true,
+		"LevelWriteCommitted":  true,
+		"Named":                true,
+		"NamedArg":             true,
+		"NullBool":             true,
+		"NullFloat64":          true,
+		"NullInt64":            true,
+		"NullString":           true,
+		"Open":                 true,
+		"OpenDB":               true,
+		"Out":                  true,
+		"RawBytes":             true,
+		"Register":             true,
+		"Result":               true,
+		"Row":                  true,
+		"Rows":                 true,
+		"Scanner":              true,
+		"Stmt":                 true,
+		"Tx":                   true,
+		"TxOptions":            true,
+	},
+	"database/sql/driver": map[string]bool{
+		"Bool":                           true,
+		"ColumnConverter":                true,
+		"Conn":                           true,
+		"ConnBeginTx":                    true,
+		"ConnPrepareContext":             true,
+		"Connector":                      true,
+		"DefaultParameterConverter":      true,
+		"Driver":                         true,
+		"DriverContext":                  true,
+		"ErrBadConn":                     true,
+		"ErrRemoveArgument":              true,
+		"ErrSkip":                        true,
+		"Execer":                         true,
+		"ExecerContext":                  true,
+		"Int32":                          true,
+		"IsScanValue":                    true,
+		"IsValue":                        true,
+		"IsolationLevel":                 true,
+		"NamedValue":                     true,
+		"NamedValueChecker":              true,
+		"NotNull":                        true,
+		"Null":                           true,
+		"Pinger":                         true,
+		"Queryer":                        true,
+		"QueryerContext":                 true,
+		"Result":                         true,
+		"ResultNoRows":                   true,
+		"Rows":                           true,
+		"RowsAffected":                   true,
+		"RowsColumnTypeDatabaseTypeName": true,
+		"RowsColumnTypeLength":           true,
+		"RowsColumnTypeNullable":         true,
+		"RowsColumnTypePrecisionScale":   true,
+		"RowsColumnTypeScanType":         true,
+		"RowsNextResultSet":              true,
+		"SessionResetter":                true,
+		"Stmt":                           true,
+		"StmtExecContext":                true,
+		"StmtQueryContext":               true,
+		"String":                         true,
+		"Tx":                             true,
+		"TxOptions":                      true,
+		"Value":                          true,
+		"ValueConverter":                 true,
+		"Valuer":                         true,
+	},
+	"debug/dwarf": map[string]bool{
+		"AddrType":                  true,
+		"ArrayType":                 true,
+		"Attr":                      true,
+		"AttrAbstractOrigin":        true,
+		"AttrAccessibility":         true,
+		"AttrAddrClass":             true,
+		"AttrAllocated":             true,
+		"AttrArtificial":            true,
+		"AttrAssociated":            true,
+		"AttrBaseTypes":             true,
+		"AttrBitOffset":             true,
+		"AttrBitSize":               true,
+		"AttrByteSize":              true,
+		"AttrCallColumn":            true,
+		"AttrCallFile":              true,
+		"AttrCallLine":              true,
+		"AttrCalling":               true,
+		"AttrCommonRef":             true,
+		"AttrCompDir":               true,
+		"AttrConstValue":            true,
+		"AttrContainingType":        true,
+		"AttrCount":                 true,
+		"AttrDataLocation":          true,
+		"AttrDataMemberLoc":         true,
+		"AttrDeclColumn":            true,
+		"AttrDeclFile":              true,
+		"AttrDeclLine":              true,
+		"AttrDeclaration":           true,
+		"AttrDefaultValue":          true,
+		"AttrDescription":           true,
+		"AttrDiscr":                 true,
+		"AttrDiscrList":             true,
+		"AttrDiscrValue":            true,
+		"AttrEncoding":              true,
+		"AttrEntrypc":               true,
+		"AttrExtension":             true,
+		"AttrExternal":              true,
+		"AttrFrameBase":             true,
+		"AttrFriend":                true,
+		"AttrHighpc":                true,
+		"AttrIdentifierCase":        true,
+		"AttrImport":                true,
+		"AttrInline":                true,
+		"AttrIsOptional":            true,
+		"AttrLanguage":              true,
+		"AttrLocation":              true,
+		"AttrLowerBound":            true,
+		"AttrLowpc":                 true,
+		"AttrMacroInfo":             true,
+		"AttrName":                  true,
+		"AttrNamelistItem":          true,
+		"AttrOrdering":              true,
+		"AttrPriority":              true,
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+		"R_390_GOTPLTOFF32":                  true,
+		"R_390_GOTPLTOFF64":                  true,
+		"R_390_JMP_SLOT":                     true,
+		"R_390_NONE":                         true,
+		"R_390_PC16":                         true,
+		"R_390_PC16DBL":                      true,
+		"R_390_PC32":                         true,
+		"R_390_PC32DBL":                      true,
+		"R_390_PC64":                         true,
+		"R_390_PLT16DBL":                     true,
+		"R_390_PLT32":                        true,
+		"R_390_PLT32DBL":                     true,
+		"R_390_PLT64":                        true,
+		"R_390_RELATIVE":                     true,
+		"R_390_TLS_DTPMOD":                   true,
+		"R_390_TLS_DTPOFF":                   true,
+		"R_390_TLS_GD32":                     true,
+		"R_390_TLS_GD64":                     true,
+		"R_390_TLS_GDCALL":                   true,
+		"R_390_TLS_GOTIE12":                  true,
+		"R_390_TLS_GOTIE20":                  true,
+		"R_390_TLS_GOTIE32":                  true,
+		"R_390_TLS_GOTIE64":                  true,
+		"R_390_TLS_IE32":                     true,
+		"R_390_TLS_IE64":                     true,
+		"R_390_TLS_IEENT":                    true,
+		"R_390_TLS_LDCALL":                   true,
+		"R_390_TLS_LDM32":                    true,
+		"R_390_TLS_LDM64":                    true,
+		"R_390_TLS_LDO32":                    true,
+		"R_390_TLS_LDO64":                    true,
+		"R_390_TLS_LE32":                     true,
+		"R_390_TLS_LE64":                     true,
+		"R_390_TLS_LOAD":                     true,
+		"R_390_TLS_TPOFF":                    true,
+		"R_AARCH64":                          true,
+		"R_AARCH64_ABS16":                    true,
+		"R_AARCH64_ABS32":                    true,
+		"R_AARCH64_ABS64":                    true,
+		"R_AARCH64_ADD_ABS_LO12_NC":          true,
+		"R_AARCH64_ADR_GOT_PAGE":             true,
+		"R_AARCH64_ADR_PREL_LO21":            true,
+		"R_AARCH64_ADR_PREL_PG_HI21":         true,
+		"R_AARCH64_ADR_PREL_PG_HI21_NC":      true,
+		"R_AARCH64_CALL26":                   true,
+		"R_AARCH64_CONDBR19":                 true,
+		"R_AARCH64_COPY":                     true,
+		"R_AARCH64_GLOB_DAT":                 true,
+		"R_AARCH64_GOT_LD_PREL19":            true,
+		"R_AARCH64_IRELATIVE":                true,
+		"R_AARCH64_JUMP26":                   true,
+		"R_AARCH64_JUMP_SLOT":                true,
+		"R_AARCH64_LD64_GOTOFF_LO15":         true,
+		"R_AARCH64_LD64_GOTPAGE_LO15":        true,
+		"R_AARCH64_LD64_GOT_LO12_NC":         true,
+		"R_AARCH64_LDST128_ABS_LO12_NC":      true,
+		"R_AARCH64_LDST16_ABS_LO12_NC":       true,
+		"R_AARCH64_LDST32_ABS_LO12_NC":       true,
+		"R_AARCH64_LDST64_ABS_LO12_NC":       true,
+		"R_AARCH64_LDST8_ABS_LO12_NC":        true,
+		"R_AARCH64_LD_PREL_LO19":             true,
+		"R_AARCH64_MOVW_SABS_G0":             true,
+		"R_AARCH64_MOVW_SABS_G1":             true,
+		"R_AARCH64_MOVW_SABS_G2":             true,
+		"R_AARCH64_MOVW_UABS_G0":             true,
+		"R_AARCH64_MOVW_UABS_G0_NC":          true,
+		"R_AARCH64_MOVW_UABS_G1":             true,
+		"R_AARCH64_MOVW_UABS_G1_NC":          true,
+		"R_AARCH64_MOVW_UABS_G2":             true,
+		"R_AARCH64_MOVW_UABS_G2_NC":          true,
+		"R_AARCH64_MOVW_UABS_G3":             true,
+		"R_AARCH64_NONE":                     true,
+		"R_AARCH64_NULL":                     true,
+		"R_AARCH64_P32_ABS16":                true,
+		"R_AARCH64_P32_ABS32":                true,
+		"R_AARCH64_P32_ADD_ABS_LO12_NC":      true,
+		"R_AARCH64_P32_ADR_GOT_PAGE":         true,
+		"R_AARCH64_P32_ADR_PREL_LO21":        true,
+		"R_AARCH64_P32_ADR_PREL_PG_HI21":     true,
+		"R_AARCH64_P32_CALL26":               true,
+		"R_AARCH64_P32_CONDBR19":             true,
+		"R_AARCH64_P32_COPY":                 true,
+		"R_AARCH64_P32_GLOB_DAT":             true,
+		"R_AARCH64_P32_GOT_LD_PREL19":        true,
+		"R_AARCH64_P32_IRELATIVE":            true,
+		"R_AARCH64_P32_JUMP26":               true,
+		"R_AARCH64_P32_JUMP_SLOT":            true,
+		"R_AARCH64_P32_LD32_GOT_LO12_NC":     true,
+		"R_AARCH64_P32_LDST128_ABS_LO12_NC":  true,
+		"R_AARCH64_P32_LDST16_ABS_LO12_NC":   true,
+		"R_AARCH64_P32_LDST32_ABS_LO12_NC":   true,
+		"R_AARCH64_P32_LDST64_ABS_LO12_NC":   true,
+		"R_AARCH64_P32_LDST8_ABS_LO12_NC":    true,
+		"R_AARCH64_P32_LD_PREL_LO19":         true,
+		"R_AARCH64_P32_MOVW_SABS_G0":         true,
+		"R_AARCH64_P32_MOVW_UABS_G0":         true,
+		"R_AARCH64_P32_MOVW_UABS_G0_NC":      true,
+		"R_AARCH64_P32_MOVW_UABS_G1":         true,
+		"R_AARCH64_P32_PREL16":               true,
+		"R_AARCH64_P32_PREL32":               true,
+		"R_AARCH64_P32_RELATIVE":             true,
+		"R_AARCH64_P32_TLSDESC":              true,
+		"R_AARCH64_P32_TLSDESC_ADD_LO12_NC":  true,
+		"R_AARCH64_P32_TLSDESC_ADR_PAGE21":   true,
+		"R_AARCH64_P32_TLSDESC_ADR_PREL21":   true,
+		"R_AARCH64_P32_TLSDESC_CALL":         true,
+		"R_AARCH64_P32_TLSDESC_LD32_LO12_NC": true,
+		"R_AARCH64_P32_TLSDESC_LD_PREL19":    true,
+		"R_AARCH64_P32_TLSGD_ADD_LO12_NC":    true,
+		"R_AARCH64_P32_TLSGD_ADR_PAGE21":     true,
+		"R_AARCH64_P32_TLSIE_ADR_GOTTPREL_PAGE21":   true,
+		"R_AARCH64_P32_TLSIE_LD32_GOTTPREL_LO12_NC": true,
+		"R_AARCH64_P32_TLSIE_LD_GOTTPREL_PREL19":    true,
+		"R_AARCH64_P32_TLSLE_ADD_TPREL_HI12":        true,
+		"R_AARCH64_P32_TLSLE_ADD_TPREL_LO12":        true,
+		"R_AARCH64_P32_TLSLE_ADD_TPREL_LO12_NC":     true,
+		"R_AARCH64_P32_TLSLE_MOVW_TPREL_G0":         true,
+		"R_AARCH64_P32_TLSLE_MOVW_TPREL_G0_NC":      true,
+		"R_AARCH64_P32_TLSLE_MOVW_TPREL_G1":         true,
+		"R_AARCH64_P32_TLS_DTPMOD":                  true,
+		"R_AARCH64_P32_TLS_DTPREL":                  true,
+		"R_AARCH64_P32_TLS_TPREL":                   true,
+		"R_AARCH64_P32_TSTBR14":                     true,
+		"R_AARCH64_PREL16":                          true,
+		"R_AARCH64_PREL32":                          true,
+		"R_AARCH64_PREL64":                          true,
+		"R_AARCH64_RELATIVE":                        true,
+		"R_AARCH64_TLSDESC":                         true,
+		"R_AARCH64_TLSDESC_ADD":                     true,
+		"R_AARCH64_TLSDESC_ADD_LO12_NC":             true,
+		"R_AARCH64_TLSDESC_ADR_PAGE21":              true,
+		"R_AARCH64_TLSDESC_ADR_PREL21":              true,
+		"R_AARCH64_TLSDESC_CALL":                    true,
+		"R_AARCH64_TLSDESC_LD64_LO12_NC":            true,
+		"R_AARCH64_TLSDESC_LDR":                     true,
+		"R_AARCH64_TLSDESC_LD_PREL19":               true,
+		"R_AARCH64_TLSDESC_OFF_G0_NC":               true,
+		"R_AARCH64_TLSDESC_OFF_G1":                  true,
+		"R_AARCH64_TLSGD_ADD_LO12_NC":               true,
+		"R_AARCH64_TLSGD_ADR_PAGE21":                true,
+		"R_AARCH64_TLSGD_ADR_PREL21":                true,
+		"R_AARCH64_TLSGD_MOVW_G0_NC":                true,
+		"R_AARCH64_TLSGD_MOVW_G1":                   true,
+		"R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21":       true,
+		"R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC":     true,
+		"R_AARCH64_TLSIE_LD_GOTTPREL_PREL19":        true,
+		"R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC":       true,
+		"R_AARCH64_TLSIE_MOVW_GOTTPREL_G1":          true,
+		"R_AARCH64_TLSLD_ADR_PAGE21":                true,
+		"R_AARCH64_TLSLD_ADR_PREL21":                true,
+		"R_AARCH64_TLSLD_LDST128_DTPREL_LO12":       true,
+		"R_AARCH64_TLSLD_LDST128_DTPREL_LO12_NC":    true,
+		"R_AARCH64_TLSLE_ADD_TPREL_HI12":            true,
+		"R_AARCH64_TLSLE_ADD_TPREL_LO12":            true,
+		"R_AARCH64_TLSLE_ADD_TPREL_LO12_NC":         true,
+		"R_AARCH64_TLSLE_LDST128_TPREL_LO12":        true,
+		"R_AARCH64_TLSLE_LDST128_TPREL_LO12_NC":     true,
+		"R_AARCH64_TLSLE_MOVW_TPREL_G0":             true,
+		"R_AARCH64_TLSLE_MOVW_TPREL_G0_NC":          true,
+		"R_AARCH64_TLSLE_MOVW_TPREL_G1":             true,
+		"R_AARCH64_TLSLE_MOVW_TPREL_G1_NC":          true,
+		"R_AARCH64_TLSLE_MOVW_TPREL_G2":             true,
+		"R_AARCH64_TLS_DTPMOD64":                    true,
+		"R_AARCH64_TLS_DTPREL64":                    true,
+		"R_AARCH64_TLS_TPREL64":                     true,
+		"R_AARCH64_TSTBR14":                         true,
+		"R_ALPHA":                                   true,
+		"R_ALPHA_BRADDR":                            true,
+		"R_ALPHA_COPY":                              true,
+		"R_ALPHA_GLOB_DAT":                          true,
+		"R_ALPHA_GPDISP":                            true,
+		"R_ALPHA_GPREL32":                           true,
+		"R_ALPHA_GPRELHIGH":                         true,
+		"R_ALPHA_GPRELLOW":                          true,
+		"R_ALPHA_GPVALUE":                           true,
+		"R_ALPHA_HINT":                              true,
+		"R_ALPHA_IMMED_BR_HI32":                     true,
+		"R_ALPHA_IMMED_GP_16":                       true,
+		"R_ALPHA_IMMED_GP_HI32":                     true,
+		"R_ALPHA_IMMED_LO32":                        true,
+		"R_ALPHA_IMMED_SCN_HI32":                    true,
+		"R_ALPHA_JMP_SLOT":                          true,
+		"R_ALPHA_LITERAL":                           true,
+		"R_ALPHA_LITUSE":                            true,
+		"R_ALPHA_NONE":                              true,
+		"R_ALPHA_OP_PRSHIFT":                        true,
+		"R_ALPHA_OP_PSUB":                           true,
+		"R_ALPHA_OP_PUSH":                           true,
+		"R_ALPHA_OP_STORE":                          true,
+		"R_ALPHA_REFLONG":                           true,
+		"R_ALPHA_REFQUAD":                           true,
+		"R_ALPHA_RELATIVE":                          true,
+		"R_ALPHA_SREL16":                            true,
+		"R_ALPHA_SREL32":                            true,
+		"R_ALPHA_SREL64":                            true,
+		"R_ARM":                                     true,
+		"R_ARM_ABS12":                               true,
+		"R_ARM_ABS16":                               true,
+		"R_ARM_ABS32":                               true,
+		"R_ARM_ABS32_NOI":                           true,
+		"R_ARM_ABS8":                                true,
+		"R_ARM_ALU_PCREL_15_8":                      true,
+		"R_ARM_ALU_PCREL_23_15":                     true,
+		"R_ARM_ALU_PCREL_7_0":                       true,
+		"R_ARM_ALU_PC_G0":                           true,
+		"R_ARM_ALU_PC_G0_NC":                        true,
+		"R_ARM_ALU_PC_G1":                           true,
+		"R_ARM_ALU_PC_G1_NC":                        true,
+		"R_ARM_ALU_PC_G2":                           true,
+		"R_ARM_ALU_SBREL_19_12_NC":                  true,
+		"R_ARM_ALU_SBREL_27_20_CK":                  true,
+		"R_ARM_ALU_SB_G0":                           true,
+		"R_ARM_ALU_SB_G0_NC":                        true,
+		"R_ARM_ALU_SB_G1":                           true,
+		"R_ARM_ALU_SB_G1_NC":                        true,
+		"R_ARM_ALU_SB_G2":                           true,
+		"R_ARM_AMP_VCALL9":                          true,
+		"R_ARM_BASE_ABS":                            true,
+		"R_ARM_CALL":                                true,
+		"R_ARM_COPY":                                true,
+		"R_ARM_GLOB_DAT":                            true,
+		"R_ARM_GNU_VTENTRY":                         true,
+		"R_ARM_GNU_VTINHERIT":                       true,
+		"R_ARM_GOT32":                               true,
+		"R_ARM_GOTOFF":                              true,
+		"R_ARM_GOTOFF12":                            true,
+		"R_ARM_GOTPC":                               true,
+		"R_ARM_GOTRELAX":                            true,
+		"R_ARM_GOT_ABS":                             true,
+		"R_ARM_GOT_BREL12":                          true,
+		"R_ARM_GOT_PREL":                            true,
+		"R_ARM_IRELATIVE":                           true,
+		"R_ARM_JUMP24":                              true,
+		"R_ARM_JUMP_SLOT":                           true,
+		"R_ARM_LDC_PC_G0":                           true,
+		"R_ARM_LDC_PC_G1":                           true,
+		"R_ARM_LDC_PC_G2":                           true,
+		"R_ARM_LDC_SB_G0":                           true,
+		"R_ARM_LDC_SB_G1":                           true,
+		"R_ARM_LDC_SB_G2":                           true,
+		"R_ARM_LDRS_PC_G0":                          true,
+		"R_ARM_LDRS_PC_G1":                          true,
+		"R_ARM_LDRS_PC_G2":                          true,
+		"R_ARM_LDRS_SB_G0":                          true,
+		"R_ARM_LDRS_SB_G1":                          true,
+		"R_ARM_LDRS_SB_G2":                          true,
+		"R_ARM_LDR_PC_G1":                           true,
+		"R_ARM_LDR_PC_G2":                           true,
+		"R_ARM_LDR_SBREL_11_10_NC":                  true,
+		"R_ARM_LDR_SB_G0":                           true,
+		"R_ARM_LDR_SB_G1":                           true,
+		"R_ARM_LDR_SB_G2":                           true,
+		"R_ARM_ME_TOO":                              true,
+		"R_ARM_MOVT_ABS":                            true,
+		"R_ARM_MOVT_BREL":                           true,
+		"R_ARM_MOVT_PREL":                           true,
+		"R_ARM_MOVW_ABS_NC":                         true,
+		"R_ARM_MOVW_BREL":                           true,
+		"R_ARM_MOVW_BREL_NC":                        true,
+		"R_ARM_MOVW_PREL_NC":                        true,
+		"R_ARM_NONE":                                true,
+		"R_ARM_PC13":                                true,
+		"R_ARM_PC24":                                true,
+		"R_ARM_PLT32":                               true,
+		"R_ARM_PLT32_ABS":                           true,
+		"R_ARM_PREL31":                              true,
+		"R_ARM_PRIVATE_0":                           true,
+		"R_ARM_PRIVATE_1":                           true,
+		"R_ARM_PRIVATE_10":                          true,
+		"R_ARM_PRIVATE_11":                          true,
+		"R_ARM_PRIVATE_12":                          true,
+		"R_ARM_PRIVATE_13":                          true,
+		"R_ARM_PRIVATE_14":                          true,
+		"R_ARM_PRIVATE_15":                          true,
+		"R_ARM_PRIVATE_2":                           true,
+		"R_ARM_PRIVATE_3":                           true,
+		"R_ARM_PRIVATE_4":                           true,
+		"R_ARM_PRIVATE_5":                           true,
+		"R_ARM_PRIVATE_6":                           true,
+		"R_ARM_PRIVATE_7":                           true,
+		"R_ARM_PRIVATE_8":                           true,
+		"R_ARM_PRIVATE_9":                           true,
+		"R_ARM_RABS32":                              true,
+		"R_ARM_RBASE":                               true,
+		"R_ARM_REL32":                               true,
+		"R_ARM_REL32_NOI":                           true,
+		"R_ARM_RELATIVE":                            true,
+		"R_ARM_RPC24":                               true,
+		"R_ARM_RREL32":                              true,
+		"R_ARM_RSBREL32":                            true,
+		"R_ARM_RXPC25":                              true,
+		"R_ARM_SBREL31":                             true,
+		"R_ARM_SBREL32":                             true,
+		"R_ARM_SWI24":                               true,
+		"R_ARM_TARGET1":                             true,
+		"R_ARM_TARGET2":                             true,
+		"R_ARM_THM_ABS5":                            true,
+		"R_ARM_THM_ALU_ABS_G0_NC":                   true,
+		"R_ARM_THM_ALU_ABS_G1_NC":                   true,
+		"R_ARM_THM_ALU_ABS_G2_NC":                   true,
+		"R_ARM_THM_ALU_ABS_G3":                      true,
+		"R_ARM_THM_ALU_PREL_11_0":                   true,
+		"R_ARM_THM_GOT_BREL12":                      true,
+		"R_ARM_THM_JUMP11":                          true,
+		"R_ARM_THM_JUMP19":                          true,
+		"R_ARM_THM_JUMP24":                          true,
+		"R_ARM_THM_JUMP6":                           true,
+		"R_ARM_THM_JUMP8":                           true,
+		"R_ARM_THM_MOVT_ABS":                        true,
+		"R_ARM_THM_MOVT_BREL":                       true,
+		"R_ARM_THM_MOVT_PREL":                       true,
+		"R_ARM_THM_MOVW_ABS_NC":                     true,
+		"R_ARM_THM_MOVW_BREL":                       true,
+		"R_ARM_THM_MOVW_BREL_NC":                    true,
+		"R_ARM_THM_MOVW_PREL_NC":                    true,
+		"R_ARM_THM_PC12":                            true,
+		"R_ARM_THM_PC22":                            true,
+		"R_ARM_THM_PC8":                             true,
+		"R_ARM_THM_RPC22":                           true,
+		"R_ARM_THM_SWI8":                            true,
+		"R_ARM_THM_TLS_CALL":                        true,
+		"R_ARM_THM_TLS_DESCSEQ16":                   true,
+		"R_ARM_THM_TLS_DESCSEQ32":                   true,
+		"R_ARM_THM_XPC22":                           true,
+		"R_ARM_TLS_CALL":                            true,
+		"R_ARM_TLS_DESCSEQ":                         true,
+		"R_ARM_TLS_DTPMOD32":                        true,
+		"R_ARM_TLS_DTPOFF32":                        true,
+		"R_ARM_TLS_GD32":                            true,
+		"R_ARM_TLS_GOTDESC":                         true,
+		"R_ARM_TLS_IE12GP":                          true,
+		"R_ARM_TLS_IE32":                            true,
+		"R_ARM_TLS_LDM32":                           true,
+		"R_ARM_TLS_LDO12":                           true,
+		"R_ARM_TLS_LDO32":                           true,
+		"R_ARM_TLS_LE12":                            true,
+		"R_ARM_TLS_LE32":                            true,
+		"R_ARM_TLS_TPOFF32":                         true,
+		"R_ARM_V4BX":                                true,
+		"R_ARM_XPC25":                               true,
+		"R_INFO":                                    true,
+		"R_INFO32":                                  true,
+		"R_MIPS":                                    true,
+		"R_MIPS_16":                                 true,
+		"R_MIPS_26":                                 true,
+		"R_MIPS_32":                                 true,
+		"R_MIPS_64":                                 true,
+		"R_MIPS_ADD_IMMEDIATE":                      true,
+		"R_MIPS_CALL16":                             true,
+		"R_MIPS_CALL_HI16":                          true,
+		"R_MIPS_CALL_LO16":                          true,
+		"R_MIPS_DELETE":                             true,
+		"R_MIPS_GOT16":                              true,
+		"R_MIPS_GOT_DISP":                           true,
+		"R_MIPS_GOT_HI16":                           true,
+		"R_MIPS_GOT_LO16":                           true,
+		"R_MIPS_GOT_OFST":                           true,
+		"R_MIPS_GOT_PAGE":                           true,
+		"R_MIPS_GPREL16":                            true,
+		"R_MIPS_GPREL32":                            true,
+		"R_MIPS_HI16":                               true,
+		"R_MIPS_HIGHER":                             true,
+		"R_MIPS_HIGHEST":                            true,
+		"R_MIPS_INSERT_A":                           true,
+		"R_MIPS_INSERT_B":                           true,
+		"R_MIPS_JALR":                               true,
+		"R_MIPS_LITERAL":                            true,
+		"R_MIPS_LO16":                               true,
+		"R_MIPS_NONE":                               true,
+		"R_MIPS_PC16":                               true,
+		"R_MIPS_PJUMP":                              true,
+		"R_MIPS_REL16":                              true,
+		"R_MIPS_REL32":                              true,
+		"R_MIPS_RELGOT":                             true,
+		"R_MIPS_SCN_DISP":                           true,
+		"R_MIPS_SHIFT5":                             true,
+		"R_MIPS_SHIFT6":                             true,
+		"R_MIPS_SUB":                                true,
+		"R_MIPS_TLS_DTPMOD32":                       true,
+		"R_MIPS_TLS_DTPMOD64":                       true,
+		"R_MIPS_TLS_DTPREL32":                       true,
+		"R_MIPS_TLS_DTPREL64":                       true,
+		"R_MIPS_TLS_DTPREL_HI16":                    true,
+		"R_MIPS_TLS_DTPREL_LO16":                    true,
+		"R_MIPS_TLS_GD":                             true,
+		"R_MIPS_TLS_GOTTPREL":                       true,
+		"R_MIPS_TLS_LDM":                            true,
+		"R_MIPS_TLS_TPREL32":                        true,
+		"R_MIPS_TLS_TPREL64":                        true,
+		"R_MIPS_TLS_TPREL_HI16":                     true,
+		"R_MIPS_TLS_TPREL_LO16":                     true,
+		"R_PPC":                                     true,
+		"R_PPC64":                                   true,
+		"R_PPC64_ADDR14":                            true,
+		"R_PPC64_ADDR14_BRNTAKEN":                   true,
+		"R_PPC64_ADDR14_BRTAKEN":                    true,
+		"R_PPC64_ADDR16":                            true,
+		"R_PPC64_ADDR16_DS":                         true,
+		"R_PPC64_ADDR16_HA":                         true,
+		"R_PPC64_ADDR16_HI":                         true,
+		"R_PPC64_ADDR16_HIGH":                       true,
+		"R_PPC64_ADDR16_HIGHA":                      true,
+		"R_PPC64_ADDR16_HIGHER":                     true,
+		"R_PPC64_ADDR16_HIGHERA":                    true,
+		"R_PPC64_ADDR16_HIGHEST":                    true,
+		"R_PPC64_ADDR16_HIGHESTA":                   true,
+		"R_PPC64_ADDR16_LO":                         true,
+		"R_PPC64_ADDR16_LO_DS":                      true,
+		"R_PPC64_ADDR24":                            true,
+		"R_PPC64_ADDR32":                            true,
+		"R_PPC64_ADDR64":                            true,
+		"R_PPC64_ADDR64_LOCAL":                      true,
+		"R_PPC64_DTPMOD64":                          true,
+		"R_PPC64_DTPREL16":                          true,
+		"R_PPC64_DTPREL16_DS":                       true,
+		"R_PPC64_DTPREL16_HA":                       true,
+		"R_PPC64_DTPREL16_HI":                       true,
+		"R_PPC64_DTPREL16_HIGH":                     true,
+		"R_PPC64_DTPREL16_HIGHA":                    true,
+		"R_PPC64_DTPREL16_HIGHER":                   true,
+		"R_PPC64_DTPREL16_HIGHERA":                  true,
+		"R_PPC64_DTPREL16_HIGHEST":                  true,
+		"R_PPC64_DTPREL16_HIGHESTA":                 true,
+		"R_PPC64_DTPREL16_LO":                       true,
+		"R_PPC64_DTPREL16_LO_DS":                    true,
+		"R_PPC64_DTPREL64":                          true,
+		"R_PPC64_ENTRY":                             true,
+		"R_PPC64_GOT16":                             true,
+		"R_PPC64_GOT16_DS":                          true,
+		"R_PPC64_GOT16_HA":                          true,
+		"R_PPC64_GOT16_HI":                          true,
+		"R_PPC64_GOT16_LO":                          true,
+		"R_PPC64_GOT16_LO_DS":                       true,
+		"R_PPC64_GOT_DTPREL16_DS":                   true,
+		"R_PPC64_GOT_DTPREL16_HA":                   true,
+		"R_PPC64_GOT_DTPREL16_HI":                   true,
+		"R_PPC64_GOT_DTPREL16_LO_DS":                true,
+		"R_PPC64_GOT_TLSGD16":                       true,
+		"R_PPC64_GOT_TLSGD16_HA":                    true,
+		"R_PPC64_GOT_TLSGD16_HI":                    true,
+		"R_PPC64_GOT_TLSGD16_LO":                    true,
+		"R_PPC64_GOT_TLSLD16":                       true,
+		"R_PPC64_GOT_TLSLD16_HA":                    true,
+		"R_PPC64_GOT_TLSLD16_HI":                    true,
+		"R_PPC64_GOT_TLSLD16_LO":                    true,
+		"R_PPC64_GOT_TPREL16_DS":                    true,
+		"R_PPC64_GOT_TPREL16_HA":                    true,
+		"R_PPC64_GOT_TPREL16_HI":                    true,
+		"R_PPC64_GOT_TPREL16_LO_DS":                 true,
+		"R_PPC64_IRELATIVE":                         true,
+		"R_PPC64_JMP_IREL":                          true,
+		"R_PPC64_JMP_SLOT":                          true,
+		"R_PPC64_NONE":                              true,
+		"R_PPC64_PLT16_LO_DS":                       true,
+		"R_PPC64_PLTGOT16":                          true,
+		"R_PPC64_PLTGOT16_DS":                       true,
+		"R_PPC64_PLTGOT16_HA":                       true,
+		"R_PPC64_PLTGOT16_HI":                       true,
+		"R_PPC64_PLTGOT16_LO":                       true,
+		"R_PPC64_PLTGOT_LO_DS":                      true,
+		"R_PPC64_REL14":                             true,
+		"R_PPC64_REL14_BRNTAKEN":                    true,
+		"R_PPC64_REL14_BRTAKEN":                     true,
+		"R_PPC64_REL16":                             true,
+		"R_PPC64_REL16DX_HA":                        true,
+		"R_PPC64_REL16_HA":                          true,
+		"R_PPC64_REL16_HI":                          true,
+		"R_PPC64_REL16_LO":                          true,
+		"R_PPC64_REL24":                             true,
+		"R_PPC64_REL24_NOTOC":                       true,
+		"R_PPC64_REL32":                             true,
+		"R_PPC64_REL64":                             true,
+		"R_PPC64_SECTOFF_DS":                        true,
+		"R_PPC64_SECTOFF_LO_DS":                     true,
+		"R_PPC64_TLS":                               true,
+		"R_PPC64_TLSGD":                             true,
+		"R_PPC64_TLSLD":                             true,
+		"R_PPC64_TOC":                               true,
+		"R_PPC64_TOC16":                             true,
+		"R_PPC64_TOC16_DS":                          true,
+		"R_PPC64_TOC16_HA":                          true,
+		"R_PPC64_TOC16_HI":                          true,
+		"R_PPC64_TOC16_LO":                          true,
+		"R_PPC64_TOC16_LO_DS":                       true,
+		"R_PPC64_TOCSAVE":                           true,
+		"R_PPC64_TPREL16":                           true,
+		"R_PPC64_TPREL16_DS":                        true,
+		"R_PPC64_TPREL16_HA":                        true,
+		"R_PPC64_TPREL16_HI":                        true,
+		"R_PPC64_TPREL16_HIGH":                      true,
+		"R_PPC64_TPREL16_HIGHA":                     true,
+		"R_PPC64_TPREL16_HIGHER":                    true,
+		"R_PPC64_TPREL16_HIGHERA":                   true,
+		"R_PPC64_TPREL16_HIGHEST":                   true,
+		"R_PPC64_TPREL16_HIGHESTA":                  true,
+		"R_PPC64_TPREL16_LO":                        true,
+		"R_PPC64_TPREL16_LO_DS":                     true,
+		"R_PPC64_TPREL64":                           true,
+		"R_PPC_ADDR14":                              true,
+		"R_PPC_ADDR14_BRNTAKEN":                     true,
+		"R_PPC_ADDR14_BRTAKEN":                      true,
+		"R_PPC_ADDR16":                              true,
+		"R_PPC_ADDR16_HA":                           true,
+		"R_PPC_ADDR16_HI":                           true,
+		"R_PPC_ADDR16_LO":                           true,
+		"R_PPC_ADDR24":                              true,
+		"R_PPC_ADDR32":                              true,
+		"R_PPC_COPY":                                true,
+		"R_PPC_DTPMOD32":                            true,
+		"R_PPC_DTPREL16":                            true,
+		"R_PPC_DTPREL16_HA":                         true,
+		"R_PPC_DTPREL16_HI":                         true,
+		"R_PPC_DTPREL16_LO":                         true,
+		"R_PPC_DTPREL32":                            true,
+		"R_PPC_EMB_BIT_FLD":                         true,
+		"R_PPC_EMB_MRKREF":                          true,
+		"R_PPC_EMB_NADDR16":                         true,
+		"R_PPC_EMB_NADDR16_HA":                      true,
+		"R_PPC_EMB_NADDR16_HI":                      true,
+		"R_PPC_EMB_NADDR16_LO":                      true,
+		"R_PPC_EMB_NADDR32":                         true,
+		"R_PPC_EMB_RELSDA":                          true,
+		"R_PPC_EMB_RELSEC16":                        true,
+		"R_PPC_EMB_RELST_HA":                        true,
+		"R_PPC_EMB_RELST_HI":                        true,
+		"R_PPC_EMB_RELST_LO":                        true,
+		"R_PPC_EMB_SDA21":                           true,
+		"R_PPC_EMB_SDA2I16":                         true,
+		"R_PPC_EMB_SDA2REL":                         true,
+		"R_PPC_EMB_SDAI16":                          true,
+		"R_PPC_GLOB_DAT":                            true,
+		"R_PPC_GOT16":                               true,
+		"R_PPC_GOT16_HA":                            true,
+		"R_PPC_GOT16_HI":                            true,
+		"R_PPC_GOT16_LO":                            true,
+		"R_PPC_GOT_TLSGD16":                         true,
+		"R_PPC_GOT_TLSGD16_HA":                      true,
+		"R_PPC_GOT_TLSGD16_HI":                      true,
+		"R_PPC_GOT_TLSGD16_LO":                      true,
+		"R_PPC_GOT_TLSLD16":                         true,
+		"R_PPC_GOT_TLSLD16_HA":                      true,
+		"R_PPC_GOT_TLSLD16_HI":                      true,
+		"R_PPC_GOT_TLSLD16_LO":                      true,
+		"R_PPC_GOT_TPREL16":                         true,
+		"R_PPC_GOT_TPREL16_HA":                      true,
+		"R_PPC_GOT_TPREL16_HI":                      true,
+		"R_PPC_GOT_TPREL16_LO":                      true,
+		"R_PPC_JMP_SLOT":                            true,
+		"R_PPC_LOCAL24PC":                           true,
+		"R_PPC_NONE":                                true,
+		"R_PPC_PLT16_HA":                            true,
+		"R_PPC_PLT16_HI":                            true,
+		"R_PPC_PLT16_LO":                            true,
+		"R_PPC_PLT32":                               true,
+		"R_PPC_PLTREL24":                            true,
+		"R_PPC_PLTREL32":                            true,
+		"R_PPC_REL14":                               true,
+		"R_PPC_REL14_BRNTAKEN":                      true,
+		"R_PPC_REL14_BRTAKEN":                       true,
+		"R_PPC_REL24":                               true,
+		"R_PPC_REL32":                               true,
+		"R_PPC_RELATIVE":                            true,
+		"R_PPC_SDAREL16":                            true,
+		"R_PPC_SECTOFF":                             true,
+		"R_PPC_SECTOFF_HA":                          true,
+		"R_PPC_SECTOFF_HI":                          true,
+		"R_PPC_SECTOFF_LO":                          true,
+		"R_PPC_TLS":                                 true,
+		"R_PPC_TPREL16":                             true,
+		"R_PPC_TPREL16_HA":                          true,
+		"R_PPC_TPREL16_HI":                          true,
+		"R_PPC_TPREL16_LO":                          true,
+		"R_PPC_TPREL32":                             true,
+		"R_PPC_UADDR16":                             true,
+		"R_PPC_UADDR32":                             true,
+		"R_RISCV":                                   true,
+		"R_RISCV_32":                                true,
+		"R_RISCV_32_PCREL":                          true,
+		"R_RISCV_64":                                true,
+		"R_RISCV_ADD16":                             true,
+		"R_RISCV_ADD32":                             true,
+		"R_RISCV_ADD64":                             true,
+		"R_RISCV_ADD8":                              true,
+		"R_RISCV_ALIGN":                             true,
+		"R_RISCV_BRANCH":                            true,
+		"R_RISCV_CALL":                              true,
+		"R_RISCV_CALL_PLT":                          true,
+		"R_RISCV_COPY":                              true,
+		"R_RISCV_GNU_VTENTRY":                       true,
+		"R_RISCV_GNU_VTINHERIT":                     true,
+		"R_RISCV_GOT_HI20":                          true,
+		"R_RISCV_GPREL_I":                           true,
+		"R_RISCV_GPREL_S":                           true,
+		"R_RISCV_HI20":                              true,
+		"R_RISCV_JAL":                               true,
+		"R_RISCV_JUMP_SLOT":                         true,
+		"R_RISCV_LO12_I":                            true,
+		"R_RISCV_LO12_S":                            true,
+		"R_RISCV_NONE":                              true,
+		"R_RISCV_PCREL_HI20":                        true,
+		"R_RISCV_PCREL_LO12_I":                      true,
+		"R_RISCV_PCREL_LO12_S":                      true,
+		"R_RISCV_RELATIVE":                          true,
+		"R_RISCV_RELAX":                             true,
+		"R_RISCV_RVC_BRANCH":                        true,
+		"R_RISCV_RVC_JUMP":                          true,
+		"R_RISCV_RVC_LUI":                           true,
+		"R_RISCV_SET16":                             true,
+		"R_RISCV_SET32":                             true,
+		"R_RISCV_SET6":                              true,
+		"R_RISCV_SET8":                              true,
+		"R_RISCV_SUB16":                             true,
+		"R_RISCV_SUB32":                             true,
+		"R_RISCV_SUB6":                              true,
+		"R_RISCV_SUB64":                             true,
+		"R_RISCV_SUB8":                              true,
+		"R_RISCV_TLS_DTPMOD32":                      true,
+		"R_RISCV_TLS_DTPMOD64":                      true,
+		"R_RISCV_TLS_DTPREL32":                      true,
+		"R_RISCV_TLS_DTPREL64":                      true,
+		"R_RISCV_TLS_GD_HI20":                       true,
+		"R_RISCV_TLS_GOT_HI20":                      true,
+		"R_RISCV_TLS_TPREL32":                       true,
+		"R_RISCV_TLS_TPREL64":                       true,
+		"R_RISCV_TPREL_ADD":                         true,
+		"R_RISCV_TPREL_HI20":                        true,
+		"R_RISCV_TPREL_I":                           true,
+		"R_RISCV_TPREL_LO12_I":                      true,
+		"R_RISCV_TPREL_LO12_S":                      true,
+		"R_RISCV_TPREL_S":                           true,
+		"R_SPARC":                                   true,
+		"R_SPARC_10":                                true,
+		"R_SPARC_11":                                true,
+		"R_SPARC_13":                                true,
+		"R_SPARC_16":                                true,
+		"R_SPARC_22":                                true,
+		"R_SPARC_32":                                true,
+		"R_SPARC_5":                                 true,
+		"R_SPARC_6":                                 true,
+		"R_SPARC_64":                                true,
+		"R_SPARC_7":                                 true,
+		"R_SPARC_8":                                 true,
+		"R_SPARC_COPY":                              true,
+		"R_SPARC_DISP16":                            true,
+		"R_SPARC_DISP32":                            true,
+		"R_SPARC_DISP64":                            true,
+		"R_SPARC_DISP8":                             true,
+		"R_SPARC_GLOB_DAT":                          true,
+		"R_SPARC_GLOB_JMP":                          true,
+		"R_SPARC_GOT10":                             true,
+		"R_SPARC_GOT13":                             true,
+		"R_SPARC_GOT22":                             true,
+		"R_SPARC_H44":                               true,
+		"R_SPARC_HH22":                              true,
+		"R_SPARC_HI22":                              true,
+		"R_SPARC_HIPLT22":                           true,
+		"R_SPARC_HIX22":                             true,
+		"R_SPARC_HM10":                              true,
+		"R_SPARC_JMP_SLOT":                          true,
+		"R_SPARC_L44":                               true,
+		"R_SPARC_LM22":                              true,
+		"R_SPARC_LO10":                              true,
+		"R_SPARC_LOPLT10":                           true,
+		"R_SPARC_LOX10":                             true,
+		"R_SPARC_M44":                               true,
+		"R_SPARC_NONE":                              true,
+		"R_SPARC_OLO10":                             true,
+		"R_SPARC_PC10":                              true,
+		"R_SPARC_PC22":                              true,
+		"R_SPARC_PCPLT10":                           true,
+		"R_SPARC_PCPLT22":                           true,
+		"R_SPARC_PCPLT32":                           true,
+		"R_SPARC_PC_HH22":                           true,
+		"R_SPARC_PC_HM10":                           true,
+		"R_SPARC_PC_LM22":                           true,
+		"R_SPARC_PLT32":                             true,
+		"R_SPARC_PLT64":                             true,
+		"R_SPARC_REGISTER":                          true,
+		"R_SPARC_RELATIVE":                          true,
+		"R_SPARC_UA16":                              true,
+		"R_SPARC_UA32":                              true,
+		"R_SPARC_UA64":                              true,
+		"R_SPARC_WDISP16":                           true,
+		"R_SPARC_WDISP19":                           true,
+		"R_SPARC_WDISP22":                           true,
+		"R_SPARC_WDISP30":                           true,
+		"R_SPARC_WPLT30":                            true,
+		"R_SYM32":                                   true,
+		"R_SYM64":                                   true,
+		"R_TYPE32":                                  true,
+		"R_TYPE64":                                  true,
+		"R_X86_64":                                  true,
+		"R_X86_64_16":                               true,
+		"R_X86_64_32":                               true,
+		"R_X86_64_32S":                              true,
+		"R_X86_64_64":                               true,
+		"R_X86_64_8":                                true,
+		"R_X86_64_COPY":                             true,
+		"R_X86_64_DTPMOD64":                         true,
+		"R_X86_64_DTPOFF32":                         true,
+		"R_X86_64_DTPOFF64":                         true,
+		"R_X86_64_GLOB_DAT":                         true,
+		"R_X86_64_GOT32":                            true,
+		"R_X86_64_GOT64":                            true,
+		"R_X86_64_GOTOFF64":                         true,
+		"R_X86_64_GOTPC32":                          true,
+		"R_X86_64_GOTPC32_TLSDESC":                  true,
+		"R_X86_64_GOTPC64":                          true,
+		"R_X86_64_GOTPCREL":                         true,
+		"R_X86_64_GOTPCREL64":                       true,
+		"R_X86_64_GOTPCRELX":                        true,
+		"R_X86_64_GOTPLT64":                         true,
+		"R_X86_64_GOTTPOFF":                         true,
+		"R_X86_64_IRELATIVE":                        true,
+		"R_X86_64_JMP_SLOT":                         true,
+		"R_X86_64_NONE":                             true,
+		"R_X86_64_PC16":                             true,
+		"R_X86_64_PC32":                             true,
+		"R_X86_64_PC32_BND":                         true,
+		"R_X86_64_PC64":                             true,
+		"R_X86_64_PC8":                              true,
+		"R_X86_64_PLT32":                            true,
+		"R_X86_64_PLT32_BND":                        true,
+		"R_X86_64_PLTOFF64":                         true,
+		"R_X86_64_RELATIVE":                         true,
+		"R_X86_64_RELATIVE64":                       true,
+		"R_X86_64_REX_GOTPCRELX":                    true,
+		"R_X86_64_SIZE32":                           true,
+		"R_X86_64_SIZE64":                           true,
+		"R_X86_64_TLSDESC":                          true,
+		"R_X86_64_TLSDESC_CALL":                     true,
+		"R_X86_64_TLSGD":                            true,
+		"R_X86_64_TLSLD":                            true,
+		"R_X86_64_TPOFF32":                          true,
+		"R_X86_64_TPOFF64":                          true,
+		"Rel32":                                     true,
+		"Rel64":                                     true,
+		"Rela32":                                    true,
+		"Rela64":                                    true,
+		"SHF_ALLOC":                                 true,
+		"SHF_COMPRESSED":                            true,
+		"SHF_EXECINSTR":                             true,
+		"SHF_GROUP":                                 true,
+		"SHF_INFO_LINK":                             true,
+		"SHF_LINK_ORDER":                            true,
+		"SHF_MASKOS":                                true,
+		"SHF_MASKPROC":                              true,
+		"SHF_MERGE":                                 true,
+		"SHF_OS_NONCONFORMING":                      true,
+		"SHF_STRINGS":                               true,
+		"SHF_TLS":                                   true,
+		"SHF_WRITE":                                 true,
+		"SHN_ABS":                                   true,
+		"SHN_COMMON":                                true,
+		"SHN_HIOS":                                  true,
+		"SHN_HIPROC":                                true,
+		"SHN_HIRESERVE":                             true,
+		"SHN_LOOS":                                  true,
+		"SHN_LOPROC":                                true,
+		"SHN_LORESERVE":                             true,
+		"SHN_UNDEF":                                 true,
+		"SHN_XINDEX":                                true,
+		"SHT_DYNAMIC":                               true,
+		"SHT_DYNSYM":                                true,
+		"SHT_FINI_ARRAY":                            true,
+		"SHT_GNU_ATTRIBUTES":                        true,
+		"SHT_GNU_HASH":                              true,
+		"SHT_GNU_LIBLIST":                           true,
+		"SHT_GNU_VERDEF":                            true,
+		"SHT_GNU_VERNEED":                           true,
+		"SHT_GNU_VERSYM":                            true,
+		"SHT_GROUP":                                 true,
+		"SHT_HASH":                                  true,
+		"SHT_HIOS":                                  true,
+		"SHT_HIPROC":                                true,
+		"SHT_HIUSER":                                true,
+		"SHT_INIT_ARRAY":                            true,
+		"SHT_LOOS":                                  true,
+		"SHT_LOPROC":                                true,
+		"SHT_LOUSER":                                true,
+		"SHT_NOBITS":                                true,
+		"SHT_NOTE":                                  true,
+		"SHT_NULL":                                  true,
+		"SHT_PREINIT_ARRAY":                         true,
+		"SHT_PROGBITS":                              true,
+		"SHT_REL":                                   true,
+		"SHT_RELA":                                  true,
+		"SHT_SHLIB":                                 true,
+		"SHT_STRTAB":                                true,
+		"SHT_SYMTAB":                                true,
+		"SHT_SYMTAB_SHNDX":                          true,
+		"STB_GLOBAL":                                true,
+		"STB_HIOS":                                  true,
+		"STB_HIPROC":                                true,
+		"STB_LOCAL":                                 true,
+		"STB_LOOS":                                  true,
+		"STB_LOPROC":                                true,
+		"STB_WEAK":                                  true,
+		"STT_COMMON":                                true,
+		"STT_FILE":                                  true,
+		"STT_FUNC":                                  true,
+		"STT_HIOS":                                  true,
+		"STT_HIPROC":                                true,
+		"STT_LOOS":                                  true,
+		"STT_LOPROC":                                true,
+		"STT_NOTYPE":                                true,
+		"STT_OBJECT":                                true,
+		"STT_SECTION":                               true,
+		"STT_TLS":                                   true,
+		"STV_DEFAULT":                               true,
+		"STV_HIDDEN":                                true,
+		"STV_INTERNAL":                              true,
+		"STV_PROTECTED":                             true,
+		"ST_BIND":                                   true,
+		"ST_INFO":                                   true,
+		"ST_TYPE":                                   true,
+		"ST_VISIBILITY":                             true,
+		"Section":                                   true,
+		"Section32":                                 true,
+		"Section64":                                 true,
+		"SectionFlag":                               true,
+		"SectionHeader":                             true,
+		"SectionIndex":                              true,
+		"SectionType":                               true,
+		"Sym32":                                     true,
+		"Sym32Size":                                 true,
+		"Sym64":                                     true,
+		"Sym64Size":                                 true,
+		"SymBind":                                   true,
+		"SymType":                                   true,
+		"SymVis":                                    true,
+		"Symbol":                                    true,
+		"Type":                                      true,
+		"Version":                                   true,
+	},
+	"debug/gosym": map[string]bool{
+		"DecodingError":    true,
+		"Func":             true,
+		"LineTable":        true,
+		"NewLineTable":     true,
+		"NewTable":         true,
+		"Obj":              true,
+		"Sym":              true,
+		"Table":            true,
+		"UnknownFileError": true,
+		"UnknownLineError": true,
+	},
+	"debug/macho": map[string]bool{
+		"ARM64_RELOC_ADDEND":              true,
+		"ARM64_RELOC_BRANCH26":            true,
+		"ARM64_RELOC_GOT_LOAD_PAGE21":     true,
+		"ARM64_RELOC_GOT_LOAD_PAGEOFF12":  true,
+		"ARM64_RELOC_PAGE21":              true,
+		"ARM64_RELOC_PAGEOFF12":           true,
+		"ARM64_RELOC_POINTER_TO_GOT":      true,
+		"ARM64_RELOC_SUBTRACTOR":          true,
+		"ARM64_RELOC_TLVP_LOAD_PAGE21":    true,
+		"ARM64_RELOC_TLVP_LOAD_PAGEOFF12": true,
+		"ARM64_RELOC_UNSIGNED":            true,
+		"ARM_RELOC_BR24":                  true,
+		"ARM_RELOC_HALF":                  true,
+		"ARM_RELOC_HALF_SECTDIFF":         true,
+		"ARM_RELOC_LOCAL_SECTDIFF":        true,
+		"ARM_RELOC_PAIR":                  true,
+		"ARM_RELOC_PB_LA_PTR":             true,
+		"ARM_RELOC_SECTDIFF":              true,
+		"ARM_RELOC_VANILLA":               true,
+		"ARM_THUMB_32BIT_BRANCH":          true,
+		"ARM_THUMB_RELOC_BR22":            true,
+		"Cpu":                             true,
+		"Cpu386":                          true,
+		"CpuAmd64":                        true,
+		"CpuArm":                          true,
+		"CpuArm64":                        true,
+		"CpuPpc":                          true,
+		"CpuPpc64":                        true,
+		"Dylib":                           true,
+		"DylibCmd":                        true,
+		"Dysymtab":                        true,
+		"DysymtabCmd":                     true,
+		"ErrNotFat":                       true,
+		"FatArch":                         true,
+		"FatArchHeader":                   true,
+		"FatFile":                         true,
+		"File":                            true,
+		"FileHeader":                      true,
+		"FlagAllModsBound":                true,
+		"FlagAllowStackExecution":         true,
+		"FlagAppExtensionSafe":            true,
+		"FlagBindAtLoad":                  true,
+		"FlagBindsToWeak":                 true,
+		"FlagCanonical":                   true,
+		"FlagDeadStrippableDylib":         true,
+		"FlagDyldLink":                    true,
+		"FlagForceFlat":                   true,
+		"FlagHasTLVDescriptors":           true,
+		"FlagIncrLink":                    true,
+		"FlagLazyInit":                    true,
+		"FlagNoFixPrebinding":             true,
+		"FlagNoHeapExecution":             true,
+		"FlagNoMultiDefs":                 true,
+		"FlagNoReexportedDylibs":          true,
+		"FlagNoUndefs":                    true,
+		"FlagPIE":                         true,
+		"FlagPrebindable":                 true,
+		"FlagPrebound":                    true,
+		"FlagRootSafe":                    true,
+		"FlagSetuidSafe":                  true,
+		"FlagSplitSegs":                   true,
+		"FlagSubsectionsViaSymbols":       true,
+		"FlagTwoLevel":                    true,
+		"FlagWeakDefines":                 true,
+		"FormatError":                     true,
+		"GENERIC_RELOC_LOCAL_SECTDIFF":    true,
+		"GENERIC_RELOC_PAIR":              true,
+		"GENERIC_RELOC_PB_LA_PTR":         true,
+		"GENERIC_RELOC_SECTDIFF":          true,
+		"GENERIC_RELOC_TLV":               true,
+		"GENERIC_RELOC_VANILLA":           true,
+		"Load":                            true,
+		"LoadBytes":                       true,
+		"LoadCmd":                         true,
+		"LoadCmdDylib":                    true,
+		"LoadCmdDylinker":                 true,
+		"LoadCmdDysymtab":                 true,
+		"LoadCmdRpath":                    true,
+		"LoadCmdSegment":                  true,
+		"LoadCmdSegment64":                true,
+		"LoadCmdSymtab":                   true,
+		"LoadCmdThread":                   true,
+		"LoadCmdUnixThread":               true,
+		"Magic32":                         true,
+		"Magic64":                         true,
+		"MagicFat":                        true,
+		"NewFatFile":                      true,
+		"NewFile":                         true,
+		"Nlist32":                         true,
+		"Nlist64":                         true,
+		"Open":                            true,
+		"OpenFat":                         true,
+		"Regs386":                         true,
+		"RegsAMD64":                       true,
+		"Reloc":                           true,
+		"RelocTypeARM":                    true,
+		"RelocTypeARM64":                  true,
+		"RelocTypeGeneric":                true,
+		"RelocTypeX86_64":                 true,
+		"Rpath":                           true,
+		"RpathCmd":                        true,
+		"Section":                         true,
+		"Section32":                       true,
+		"Section64":                       true,
+		"SectionHeader":                   true,
+		"Segment":                         true,
+		"Segment32":                       true,
+		"Segment64":                       true,
+		"SegmentHeader":                   true,
+		"Symbol":                          true,
+		"Symtab":                          true,
+		"SymtabCmd":                       true,
+		"Thread":                          true,
+		"Type":                            true,
+		"TypeBundle":                      true,
+		"TypeDylib":                       true,
+		"TypeExec":                        true,
+		"TypeObj":                         true,
+		"X86_64_RELOC_BRANCH":             true,
+		"X86_64_RELOC_GOT":                true,
+		"X86_64_RELOC_GOT_LOAD":           true,
+		"X86_64_RELOC_SIGNED":             true,
+		"X86_64_RELOC_SIGNED_1":           true,
+		"X86_64_RELOC_SIGNED_2":           true,
+		"X86_64_RELOC_SIGNED_4":           true,
+		"X86_64_RELOC_SUBTRACTOR":         true,
+		"X86_64_RELOC_TLV":                true,
+		"X86_64_RELOC_UNSIGNED":           true,
+	},
+	"debug/pe": map[string]bool{
+		"COFFSymbol":                           true,
+		"COFFSymbolSize":                       true,
+		"DataDirectory":                        true,
+		"File":                                 true,
+		"FileHeader":                           true,
+		"FormatError":                          true,
+		"IMAGE_DIRECTORY_ENTRY_ARCHITECTURE":   true,
+		"IMAGE_DIRECTORY_ENTRY_BASERELOC":      true,
+		"IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT":   true,
+		"IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR": true,
+		"IMAGE_DIRECTORY_ENTRY_DEBUG":          true,
+		"IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT":   true,
+		"IMAGE_DIRECTORY_ENTRY_EXCEPTION":      true,
+		"IMAGE_DIRECTORY_ENTRY_EXPORT":         true,
+		"IMAGE_DIRECTORY_ENTRY_GLOBALPTR":      true,
+		"IMAGE_DIRECTORY_ENTRY_IAT":            true,
+		"IMAGE_DIRECTORY_ENTRY_IMPORT":         true,
+		"IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG":    true,
+		"IMAGE_DIRECTORY_ENTRY_RESOURCE":       true,
+		"IMAGE_DIRECTORY_ENTRY_SECURITY":       true,
+		"IMAGE_DIRECTORY_ENTRY_TLS":            true,
+		"IMAGE_FILE_MACHINE_AM33":              true,
+		"IMAGE_FILE_MACHINE_AMD64":             true,
+		"IMAGE_FILE_MACHINE_ARM":               true,
+		"IMAGE_FILE_MACHINE_ARM64":             true,
+		"IMAGE_FILE_MACHINE_ARMNT":             true,
+		"IMAGE_FILE_MACHINE_EBC":               true,
+		"IMAGE_FILE_MACHINE_I386":              true,
+		"IMAGE_FILE_MACHINE_IA64":              true,
+		"IMAGE_FILE_MACHINE_M32R":              true,
+		"IMAGE_FILE_MACHINE_MIPS16":            true,
+		"IMAGE_FILE_MACHINE_MIPSFPU":           true,
+		"IMAGE_FILE_MACHINE_MIPSFPU16":         true,
+		"IMAGE_FILE_MACHINE_POWERPC":           true,
+		"IMAGE_FILE_MACHINE_POWERPCFP":         true,
+		"IMAGE_FILE_MACHINE_R4000":             true,
+		"IMAGE_FILE_MACHINE_SH3":               true,
+		"IMAGE_FILE_MACHINE_SH3DSP":            true,
+		"IMAGE_FILE_MACHINE_SH4":               true,
+		"IMAGE_FILE_MACHINE_SH5":               true,
+		"IMAGE_FILE_MACHINE_THUMB":             true,
+		"IMAGE_FILE_MACHINE_UNKNOWN":           true,
+		"IMAGE_FILE_MACHINE_WCEMIPSV2":         true,
+		"ImportDirectory":                      true,
+		"NewFile":                              true,
+		"Open":                                 true,
+		"OptionalHeader32":                     true,
+		"OptionalHeader64":                     true,
+		"Reloc":                                true,
+		"Section":                              true,
+		"SectionHeader":                        true,
+		"SectionHeader32":                      true,
+		"StringTable":                          true,
+		"Symbol":                               true,
+	},
+	"debug/plan9obj": map[string]bool{
+		"File":          true,
+		"FileHeader":    true,
+		"Magic386":      true,
+		"Magic64":       true,
+		"MagicAMD64":    true,
+		"MagicARM":      true,
+		"NewFile":       true,
+		"Open":          true,
+		"Section":       true,
+		"SectionHeader": true,
+		"Sym":           true,
+	},
+	"encoding": map[string]bool{
+		"BinaryMarshaler":   true,
+		"BinaryUnmarshaler": true,
+		"TextMarshaler":     true,
+		"TextUnmarshaler":   true,
+	},
+	"encoding/ascii85": map[string]bool{
+		"CorruptInputError": true,
+		"Decode":            true,
+		"Encode":            true,
+		"MaxEncodedLen":     true,
+		"NewDecoder":        true,
+		"NewEncoder":        true,
+	},
+	"encoding/asn1": map[string]bool{
+		"BitString":            true,
+		"ClassApplication":     true,
+		"ClassContextSpecific": true,
+		"ClassPrivate":         true,
+		"ClassUniversal":       true,
+		"Enumerated":           true,
+		"Flag":                 true,
+		"Marshal":              true,
+		"MarshalWithParams":    true,
+		"NullBytes":            true,
+		"NullRawValue":         true,
+		"ObjectIdentifier":     true,
+		"RawContent":           true,
+		"RawValue":             true,
+		"StructuralError":      true,
+		"SyntaxError":          true,
+		"TagBitString":         true,
+		"TagBoolean":           true,
+		"TagEnum":              true,
+		"TagGeneralString":     true,
+		"TagGeneralizedTime":   true,
+		"TagIA5String":         true,
+		"TagInteger":           true,
+		"TagNull":              true,
+		"TagNumericString":     true,
+		"TagOID":               true,
+		"TagOctetString":       true,
+		"TagPrintableString":   true,
+		"TagSequence":          true,
+		"TagSet":               true,
+		"TagT61String":         true,
+		"TagUTCTime":           true,
+		"TagUTF8String":        true,
+		"Unmarshal":            true,
+		"UnmarshalWithParams":  true,
+	},
+	"encoding/base32": map[string]bool{
+		"CorruptInputError": true,
+		"Encoding":          true,
+		"HexEncoding":       true,
+		"NewDecoder":        true,
+		"NewEncoder":        true,
+		"NewEncoding":       true,
+		"NoPadding":         true,
+		"StdEncoding":       true,
+		"StdPadding":        true,
+	},
+	"encoding/base64": map[string]bool{
+		"CorruptInputError": true,
+		"Encoding":          true,
+		"NewDecoder":        true,
+		"NewEncoder":        true,
+		"NewEncoding":       true,
+		"NoPadding":         true,
+		"RawStdEncoding":    true,
+		"RawURLEncoding":    true,
+		"StdEncoding":       true,
+		"StdPadding":        true,
+		"URLEncoding":       true,
+	},
+	"encoding/binary": map[string]bool{
+		"BigEndian":      true,
+		"ByteOrder":      true,
+		"LittleEndian":   true,
+		"MaxVarintLen16": true,
+		"MaxVarintLen32": true,
+		"MaxVarintLen64": true,
+		"PutUvarint":     true,
+		"PutVarint":      true,
+		"Read":           true,
+		"ReadUvarint":    true,
+		"ReadVarint":     true,
+		"Size":           true,
+		"Uvarint":        true,
+		"Varint":         true,
+		"Write":          true,
+	},
+	"encoding/csv": map[string]bool{
+		"ErrBareQuote":     true,
+		"ErrFieldCount":    true,
+		"ErrQuote":         true,
+		"ErrTrailingComma": true,
+		"NewReader":        true,
+		"NewWriter":        true,
+		"ParseError":       true,
+		"Reader":           true,
+		"Writer":           true,
+	},
+	"encoding/gob": map[string]bool{
+		"CommonType":   true,
+		"Decoder":      true,
+		"Encoder":      true,
+		"GobDecoder":   true,
+		"GobEncoder":   true,
+		"NewDecoder":   true,
+		"NewEncoder":   true,
+		"Register":     true,
+		"RegisterName": true,
+	},
+	"encoding/hex": map[string]bool{
+		"Decode":           true,
+		"DecodeString":     true,
+		"DecodedLen":       true,
+		"Dump":             true,
+		"Dumper":           true,
+		"Encode":           true,
+		"EncodeToString":   true,
+		"EncodedLen":       true,
+		"ErrLength":        true,
+		"InvalidByteError": true,
+		"NewDecoder":       true,
+		"NewEncoder":       true,
+	},
+	"encoding/json": map[string]bool{
+		"Compact":               true,
+		"Decoder":               true,
+		"Delim":                 true,
+		"Encoder":               true,
+		"HTMLEscape":            true,
+		"Indent":                true,
+		"InvalidUTF8Error":      true,
+		"InvalidUnmarshalError": true,
+		"Marshal":               true,
+		"MarshalIndent":         true,
+		"Marshaler":             true,
+		"MarshalerError":        true,
+		"NewDecoder":            true,
+		"NewEncoder":            true,
+		"Number":                true,
+		"RawMessage":            true,
+		"SyntaxError":           true,
+		"Token":                 true,
+		"Unmarshal":             true,
+		"UnmarshalFieldError":   true,
+		"UnmarshalTypeError":    true,
+		"Unmarshaler":           true,
+		"UnsupportedTypeError":  true,
+		"UnsupportedValueError": true,
+		"Valid":                 true,
+	},
+	"encoding/pem": map[string]bool{
+		"Block":          true,
+		"Decode":         true,
+		"Encode":         true,
+		"EncodeToMemory": true,
+	},
+	"encoding/xml": map[string]bool{
+		"Attr":                 true,
+		"CharData":             true,
+		"Comment":              true,
+		"CopyToken":            true,
+		"Decoder":              true,
+		"Directive":            true,
+		"Encoder":              true,
+		"EndElement":           true,
+		"Escape":               true,
+		"EscapeText":           true,
+		"HTMLAutoClose":        true,
+		"HTMLEntity":           true,
+		"Header":               true,
+		"Marshal":              true,
+		"MarshalIndent":        true,
+		"Marshaler":            true,
+		"MarshalerAttr":        true,
+		"Name":                 true,
+		"NewDecoder":           true,
+		"NewEncoder":           true,
+		"NewTokenDecoder":      true,
+		"ProcInst":             true,
+		"StartElement":         true,
+		"SyntaxError":          true,
+		"TagPathError":         true,
+		"Token":                true,
+		"TokenReader":          true,
+		"Unmarshal":            true,
+		"UnmarshalError":       true,
+		"Unmarshaler":          true,
+		"UnmarshalerAttr":      true,
+		"UnsupportedTypeError": true,
+	},
+	"errors": map[string]bool{
+		"New": true,
+	},
+	"expvar": map[string]bool{
+		"Do":        true,
+		"Float":     true,
+		"Func":      true,
+		"Get":       true,
+		"Handler":   true,
+		"Int":       true,
+		"KeyValue":  true,
+		"Map":       true,
+		"NewFloat":  true,
+		"NewInt":    true,
+		"NewMap":    true,
+		"NewString": true,
+		"Publish":   true,
+		"String":    true,
+		"Var":       true,
+	},
+	"flag": map[string]bool{
+		"Arg":             true,
+		"Args":            true,
+		"Bool":            true,
+		"BoolVar":         true,
+		"CommandLine":     true,
+		"ContinueOnError": true,
+		"Duration":        true,
+		"DurationVar":     true,
+		"ErrHelp":         true,
+		"ErrorHandling":   true,
+		"ExitOnError":     true,
+		"Flag":            true,
+		"FlagSet":         true,
+		"Float64":         true,
+		"Float64Var":      true,
+		"Getter":          true,
+		"Int":             true,
+		"Int64":           true,
+		"Int64Var":        true,
+		"IntVar":          true,
+		"Lookup":          true,
+		"NArg":            true,
+		"NFlag":           true,
+		"NewFlagSet":      true,
+		"PanicOnError":    true,
+		"Parse":           true,
+		"Parsed":          true,
+		"PrintDefaults":   true,
+		"Set":             true,
+		"String":          true,
+		"StringVar":       true,
+		"Uint":            true,
+		"Uint64":          true,
+		"Uint64Var":       true,
+		"UintVar":         true,
+		"UnquoteUsage":    true,
+		"Usage":           true,
+		"Value":           true,
+		"Var":             true,
+		"Visit":           true,
+		"VisitAll":        true,
+	},
+	"fmt": map[string]bool{
+		"Errorf":     true,
+		"Formatter":  true,
+		"Fprint":     true,
+		"Fprintf":    true,
+		"Fprintln":   true,
+		"Fscan":      true,
+		"Fscanf":     true,
+		"Fscanln":    true,
+		"GoStringer": true,
+		"Print":      true,
+		"Printf":     true,
+		"Println":    true,
+		"Scan":       true,
+		"ScanState":  true,
+		"Scanf":      true,
+		"Scanln":     true,
+		"Scanner":    true,
+		"Sprint":     true,
+		"Sprintf":    true,
+		"Sprintln":   true,
+		"Sscan":      true,
+		"Sscanf":     true,
+		"Sscanln":    true,
+		"State":      true,
+		"Stringer":   true,
+	},
+	"go/ast": map[string]bool{
+		"ArrayType":                  true,
+		"AssignStmt":                 true,
+		"Bad":                        true,
+		"BadDecl":                    true,
+		"BadExpr":                    true,
+		"BadStmt":                    true,
+		"BasicLit":                   true,
+		"BinaryExpr":                 true,
+		"BlockStmt":                  true,
+		"BranchStmt":                 true,
+		"CallExpr":                   true,
+		"CaseClause":                 true,
+		"ChanDir":                    true,
+		"ChanType":                   true,
+		"CommClause":                 true,
+		"Comment":                    true,
+		"CommentGroup":               true,
+		"CommentMap":                 true,
+		"CompositeLit":               true,
+		"Con":                        true,
+		"DeclStmt":                   true,
+		"DeferStmt":                  true,
+		"Ellipsis":                   true,
+		"EmptyStmt":                  true,
+		"ExprStmt":                   true,
+		"Field":                      true,
+		"FieldFilter":                true,
+		"FieldList":                  true,
+		"File":                       true,
+		"FileExports":                true,
+		"Filter":                     true,
+		"FilterDecl":                 true,
+		"FilterFile":                 true,
+		"FilterFuncDuplicates":       true,
+		"FilterImportDuplicates":     true,
+		"FilterPackage":              true,
+		"FilterUnassociatedComments": true,
+		"ForStmt":                    true,
+		"Fprint":                     true,
+		"Fun":                        true,
+		"FuncDecl":                   true,
+		"FuncLit":                    true,
+		"FuncType":                   true,
+		"GenDecl":                    true,
+		"GoStmt":                     true,
+		"Ident":                      true,
+		"IfStmt":                     true,
+		"ImportSpec":                 true,
+		"Importer":                   true,
+		"IncDecStmt":                 true,
+		"IndexExpr":                  true,
+		"Inspect":                    true,
+		"InterfaceType":              true,
+		"IsExported":                 true,
+		"KeyValueExpr":               true,
+		"LabeledStmt":                true,
+		"Lbl":                        true,
+		"MapType":                    true,
+		"MergeMode":                  true,
+		"MergePackageFiles":          true,
+		"NewCommentMap":              true,
+		"NewIdent":                   true,
+		"NewObj":                     true,
+		"NewPackage":                 true,
+		"NewScope":                   true,
+		"Node":                       true,
+		"NotNilFilter":               true,
+		"ObjKind":                    true,
+		"Object":                     true,
+		"Package":                    true,
+		"PackageExports":             true,
+		"ParenExpr":                  true,
+		"Pkg":                        true,
+		"Print":                      true,
+		"RECV":                       true,
+		"RangeStmt":                  true,
+		"ReturnStmt":                 true,
+		"SEND":                       true,
+		"Scope":                      true,
+		"SelectStmt":                 true,
+		"SelectorExpr":               true,
+		"SendStmt":                   true,
+		"SliceExpr":                  true,
+		"SortImports":                true,
+		"StarExpr":                   true,
+		"StructType":                 true,
+		"SwitchStmt":                 true,
+		"Typ":                        true,
+		"TypeAssertExpr":             true,
+		"TypeSpec":                   true,
+		"TypeSwitchStmt":             true,
+		"UnaryExpr":                  true,
+		"ValueSpec":                  true,
+		"Var":                        true,
+		"Visitor":                    true,
+		"Walk":                       true,
+	},
+	"go/build": map[string]bool{
+		"AllowBinary":          true,
+		"ArchChar":             true,
+		"Context":              true,
+		"Default":              true,
+		"FindOnly":             true,
+		"IgnoreVendor":         true,
+		"Import":               true,
+		"ImportComment":        true,
+		"ImportDir":            true,
+		"ImportMode":           true,
+		"IsLocalImport":        true,
+		"MultiplePackageError": true,
+		"NoGoError":            true,
+		"Package":              true,
+		"ToolDir":              true,
+	},
+	"go/constant": map[string]bool{
+		"BinaryOp":        true,
+		"BitLen":          true,
+		"Bool":            true,
+		"BoolVal":         true,
+		"Bytes":           true,
+		"Compare":         true,
+		"Complex":         true,
+		"Denom":           true,
+		"Float":           true,
+		"Float32Val":      true,
+		"Float64Val":      true,
+		"Imag":            true,
+		"Int":             true,
+		"Int64Val":        true,
+		"Kind":            true,
+		"MakeBool":        true,
+		"MakeFloat64":     true,
+		"MakeFromBytes":   true,
+		"MakeFromLiteral": true,
+		"MakeImag":        true,
+		"MakeInt64":       true,
+		"MakeString":      true,
+		"MakeUint64":      true,
+		"MakeUnknown":     true,
+		"Num":             true,
+		"Real":            true,
+		"Shift":           true,
+		"Sign":            true,
+		"String":          true,
+		"StringVal":       true,
+		"ToComplex":       true,
+		"ToFloat":         true,
+		"ToInt":           true,
+		"Uint64Val":       true,
+		"UnaryOp":         true,
+		"Unknown":         true,
+	},
+	"go/doc": map[string]bool{
+		"AllDecls":        true,
+		"AllMethods":      true,
+		"Example":         true,
+		"Examples":        true,
+		"Filter":          true,
+		"Func":            true,
+		"IllegalPrefixes": true,
+		"IsPredeclared":   true,
+		"Mode":            true,
+		"New":             true,
+		"Note":            true,
+		"Package":         true,
+		"PreserveAST":     true,
+		"Synopsis":        true,
+		"ToHTML":          true,
+		"ToText":          true,
+		"Type":            true,
+		"Value":           true,
+	},
+	"go/format": map[string]bool{
+		"Node":   true,
+		"Source": true,
+	},
+	"go/importer": map[string]bool{
+		"Default":     true,
+		"For":         true,
+		"ForCompiler": true,
+		"Lookup":      true,
+	},
+	"go/parser": map[string]bool{
+		"AllErrors":         true,
+		"DeclarationErrors": true,
+		"ImportsOnly":       true,
+		"Mode":              true,
+		"PackageClauseOnly": true,
+		"ParseComments":     true,
+		"ParseDir":          true,
+		"ParseExpr":         true,
+		"ParseExprFrom":     true,
+		"ParseFile":         true,
+		"SpuriousErrors":    true,
+		"Trace":             true,
+	},
+	"go/printer": map[string]bool{
+		"CommentedNode": true,
+		"Config":        true,
+		"Fprint":        true,
+		"Mode":          true,
+		"RawFormat":     true,
+		"SourcePos":     true,
+		"TabIndent":     true,
+		"UseSpaces":     true,
+	},
+	"go/scanner": map[string]bool{
+		"Error":        true,
+		"ErrorHandler": true,
+		"ErrorList":    true,
+		"Mode":         true,
+		"PrintError":   true,
+		"ScanComments": true,
+		"Scanner":      true,
+	},
+	"go/token": map[string]bool{
+		"ADD":            true,
+		"ADD_ASSIGN":     true,
+		"AND":            true,
+		"AND_ASSIGN":     true,
+		"AND_NOT":        true,
+		"AND_NOT_ASSIGN": true,
+		"ARROW":          true,
+		"ASSIGN":         true,
+		"BREAK":          true,
+		"CASE":           true,
+		"CHAN":           true,
+		"CHAR":           true,
+		"COLON":          true,
+		"COMMA":          true,
+		"COMMENT":        true,
+		"CONST":          true,
+		"CONTINUE":       true,
+		"DEC":            true,
+		"DEFAULT":        true,
+		"DEFER":          true,
+		"DEFINE":         true,
+		"ELLIPSIS":       true,
+		"ELSE":           true,
+		"EOF":            true,
+		"EQL":            true,
+		"FALLTHROUGH":    true,
+		"FLOAT":          true,
+		"FOR":            true,
+		"FUNC":           true,
+		"File":           true,
+		"FileSet":        true,
+		"GEQ":            true,
+		"GO":             true,
+		"GOTO":           true,
+		"GTR":            true,
+		"HighestPrec":    true,
+		"IDENT":          true,
+		"IF":             true,
+		"ILLEGAL":        true,
+		"IMAG":           true,
+		"IMPORT":         true,
+		"INC":            true,
+		"INT":            true,
+		"INTERFACE":      true,
+		"LAND":           true,
+		"LBRACE":         true,
+		"LBRACK":         true,
+		"LEQ":            true,
+		"LOR":            true,
+		"LPAREN":         true,
+		"LSS":            true,
+		"Lookup":         true,
+		"LowestPrec":     true,
+		"MAP":            true,
+		"MUL":            true,
+		"MUL_ASSIGN":     true,
+		"NEQ":            true,
+		"NOT":            true,
+		"NewFileSet":     true,
+		"NoPos":          true,
+		"OR":             true,
+		"OR_ASSIGN":      true,
+		"PACKAGE":        true,
+		"PERIOD":         true,
+		"Pos":            true,
+		"Position":       true,
+		"QUO":            true,
+		"QUO_ASSIGN":     true,
+		"RANGE":          true,
+		"RBRACE":         true,
+		"RBRACK":         true,
+		"REM":            true,
+		"REM_ASSIGN":     true,
+		"RETURN":         true,
+		"RPAREN":         true,
+		"SELECT":         true,
+		"SEMICOLON":      true,
+		"SHL":            true,
+		"SHL_ASSIGN":     true,
+		"SHR":            true,
+		"SHR_ASSIGN":     true,
+		"STRING":         true,
+		"STRUCT":         true,
+		"SUB":            true,
+		"SUB_ASSIGN":     true,
+		"SWITCH":         true,
+		"TYPE":           true,
+		"Token":          true,
+		"UnaryPrec":      true,
+		"VAR":            true,
+		"XOR":            true,
+		"XOR_ASSIGN":     true,
+	},
+	"go/types": map[string]bool{
+		"Array":                   true,
+		"AssertableTo":            true,
+		"AssignableTo":            true,
+		"Basic":                   true,
+		"BasicInfo":               true,
+		"BasicKind":               true,
+		"Bool":                    true,
+		"Builtin":                 true,
+		"Byte":                    true,
+		"Chan":                    true,
+		"ChanDir":                 true,
+		"Checker":                 true,
+		"Comparable":              true,
+		"Complex128":              true,
+		"Complex64":               true,
+		"Config":                  true,
+		"Const":                   true,
+		"ConvertibleTo":           true,
+		"DefPredeclaredTestFuncs": true,
+		"Default":                 true,
+		"Error":                   true,
+		"Eval":                    true,
+		"ExprString":              true,
+		"FieldVal":                true,
+		"Float32":                 true,
+		"Float64":                 true,
+		"Func":                    true,
+		"Id":                      true,
+		"Identical":               true,
+		"IdenticalIgnoreTags":     true,
+		"Implements":              true,
+		"ImportMode":              true,
+		"Importer":                true,
+		"ImporterFrom":            true,
+		"Info":                    true,
+		"Initializer":             true,
+		"Int":                     true,
+		"Int16":                   true,
+		"Int32":                   true,
+		"Int64":                   true,
+		"Int8":                    true,
+		"Interface":               true,
+		"Invalid":                 true,
+		"IsBoolean":               true,
+		"IsComplex":               true,
+		"IsConstType":             true,
+		"IsFloat":                 true,
+		"IsInteger":               true,
+		"IsInterface":             true,
+		"IsNumeric":               true,
+		"IsOrdered":               true,
+		"IsString":                true,
+		"IsUnsigned":              true,
+		"IsUntyped":               true,
+		"Label":                   true,
+		"LookupFieldOrMethod":     true,
+		"Map":                     true,
+		"MethodExpr":              true,
+		"MethodSet":               true,
+		"MethodVal":               true,
+		"MissingMethod":           true,
+		"Named":                   true,
+		"NewArray":                true,
+		"NewChan":                 true,
+		"NewChecker":              true,
+		"NewConst":                true,
+		"NewField":                true,
+		"NewFunc":                 true,
+		"NewInterface":            true,
+		"NewInterfaceType":        true,
+		"NewLabel":                true,
+		"NewMap":                  true,
+		"NewMethodSet":            true,
+		"NewNamed":                true,
+		"NewPackage":              true,
+		"NewParam":                true,
+		"NewPkgName":              true,
+		"NewPointer":              true,
+		"NewScope":                true,
+		"NewSignature":            true,
+		"NewSlice":                true,
+		"NewStruct":               true,
+		"NewTuple":                true,
+		"NewTypeName":             true,
+		"NewVar":                  true,
+		"Nil":                     true,
+		"ObjectString":            true,
+		"Package":                 true,
+		"PkgName":                 true,
+		"Pointer":                 true,
+		"Qualifier":               true,
+		"RecvOnly":                true,
+		"RelativeTo":              true,
+		"Rune":                    true,
+		"Scope":                   true,
+		"Selection":               true,
+		"SelectionKind":           true,
+		"SelectionString":         true,
+		"SendOnly":                true,
+		"SendRecv":                true,
+		"Signature":               true,
+		"Sizes":                   true,
+		"SizesFor":                true,
+		"Slice":                   true,
+		"StdSizes":                true,
+		"String":                  true,
+		"Struct":                  true,
+		"Tuple":                   true,
+		"Typ":                     true,
+		"Type":                    true,
+		"TypeAndValue":            true,
+		"TypeName":                true,
+		"TypeString":              true,
+		"Uint":                    true,
+		"Uint16":                  true,
+		"Uint32":                  true,
+		"Uint64":                  true,
+		"Uint8":                   true,
+		"Uintptr":                 true,
+		"Universe":                true,
+		"Unsafe":                  true,
+		"UnsafePointer":           true,
+		"UntypedBool":             true,
+		"UntypedComplex":          true,
+		"UntypedFloat":            true,
+		"UntypedInt":              true,
+		"UntypedNil":              true,
+		"UntypedRune":             true,
+		"UntypedString":           true,
+		"Var":                     true,
+		"WriteExpr":               true,
+		"WriteSignature":          true,
+		"WriteType":               true,
+	},
+	"hash": map[string]bool{
+		"Hash":   true,
+		"Hash32": true,
+		"Hash64": true,
+	},
+	"hash/adler32": map[string]bool{
+		"Checksum": true,
+		"New":      true,
+		"Size":     true,
+	},
+	"hash/crc32": map[string]bool{
+		"Castagnoli":   true,
+		"Checksum":     true,
+		"ChecksumIEEE": true,
+		"IEEE":         true,
+		"IEEETable":    true,
+		"Koopman":      true,
+		"MakeTable":    true,
+		"New":          true,
+		"NewIEEE":      true,
+		"Size":         true,
+		"Table":        true,
+		"Update":       true,
+	},
+	"hash/crc64": map[string]bool{
+		"Checksum":  true,
+		"ECMA":      true,
+		"ISO":       true,
+		"MakeTable": true,
+		"New":       true,
+		"Size":      true,
+		"Table":     true,
+		"Update":    true,
+	},
+	"hash/fnv": map[string]bool{
+		"New128":  true,
+		"New128a": true,
+		"New32":   true,
+		"New32a":  true,
+		"New64":   true,
+		"New64a":  true,
+	},
+	"html": map[string]bool{
+		"EscapeString":   true,
+		"UnescapeString": true,
+	},
+	"html/template": map[string]bool{
+		"CSS":                  true,
+		"ErrAmbigContext":      true,
+		"ErrBadHTML":           true,
+		"ErrBranchEnd":         true,
+		"ErrEndContext":        true,
+		"ErrNoSuchTemplate":    true,
+		"ErrOutputContext":     true,
+		"ErrPartialCharset":    true,
+		"ErrPartialEscape":     true,
+		"ErrPredefinedEscaper": true,
+		"ErrRangeLoopReentry":  true,
+		"ErrSlashAmbig":        true,
+		"Error":                true,
+		"ErrorCode":            true,
+		"FuncMap":              true,
+		"HTML":                 true,
+		"HTMLAttr":             true,
+		"HTMLEscape":           true,
+		"HTMLEscapeString":     true,
+		"HTMLEscaper":          true,
+		"IsTrue":               true,
+		"JS":                   true,
+		"JSEscape":             true,
+		"JSEscapeString":       true,
+		"JSEscaper":            true,
+		"JSStr":                true,
+		"Must":                 true,
+		"New":                  true,
+		"OK":                   true,
+		"ParseFiles":           true,
+		"ParseGlob":            true,
+		"Srcset":               true,
+		"Template":             true,
+		"URL":                  true,
+		"URLQueryEscaper":      true,
+	},
+	"image": map[string]bool{
+		"Alpha":                  true,
+		"Alpha16":                true,
+		"Black":                  true,
+		"CMYK":                   true,
+		"Config":                 true,
+		"Decode":                 true,
+		"DecodeConfig":           true,
+		"ErrFormat":              true,
+		"Gray":                   true,
+		"Gray16":                 true,
+		"Image":                  true,
+		"NRGBA":                  true,
+		"NRGBA64":                true,
+		"NYCbCrA":                true,
+		"NewAlpha":               true,
+		"NewAlpha16":             true,
+		"NewCMYK":                true,
+		"NewGray":                true,
+		"NewGray16":              true,
+		"NewNRGBA":               true,
+		"NewNRGBA64":             true,
+		"NewNYCbCrA":             true,
+		"NewPaletted":            true,
+		"NewRGBA":                true,
+		"NewRGBA64":              true,
+		"NewUniform":             true,
+		"NewYCbCr":               true,
+		"Opaque":                 true,
+		"Paletted":               true,
+		"PalettedImage":          true,
+		"Point":                  true,
+		"Pt":                     true,
+		"RGBA":                   true,
+		"RGBA64":                 true,
+		"Rect":                   true,
+		"Rectangle":              true,
+		"RegisterFormat":         true,
+		"Transparent":            true,
+		"Uniform":                true,
+		"White":                  true,
+		"YCbCr":                  true,
+		"YCbCrSubsampleRatio":    true,
+		"YCbCrSubsampleRatio410": true,
+		"YCbCrSubsampleRatio411": true,
+		"YCbCrSubsampleRatio420": true,
+		"YCbCrSubsampleRatio422": true,
+		"YCbCrSubsampleRatio440": true,
+		"YCbCrSubsampleRatio444": true,
+		"ZP":                     true,
+		"ZR":                     true,
+	},
+	"image/color": map[string]bool{
+		"Alpha":        true,
+		"Alpha16":      true,
+		"Alpha16Model": true,
+		"AlphaModel":   true,
+		"Black":        true,
+		"CMYK":         true,
+		"CMYKModel":    true,
+		"CMYKToRGB":    true,
+		"Color":        true,
+		"Gray":         true,
+		"Gray16":       true,
+		"Gray16Model":  true,
+		"GrayModel":    true,
+		"Model":        true,
+		"ModelFunc":    true,
+		"NRGBA":        true,
+		"NRGBA64":      true,
+		"NRGBA64Model": true,
+		"NRGBAModel":   true,
+		"NYCbCrA":      true,
+		"NYCbCrAModel": true,
+		"Opaque":       true,
+		"Palette":      true,
+		"RGBA":         true,
+		"RGBA64":       true,
+		"RGBA64Model":  true,
+		"RGBAModel":    true,
+		"RGBToCMYK":    true,
+		"RGBToYCbCr":   true,
+		"Transparent":  true,
+		"White":        true,
+		"YCbCr":        true,
+		"YCbCrModel":   true,
+		"YCbCrToRGB":   true,
+	},
+	"image/color/palette": map[string]bool{
+		"Plan9":   true,
+		"WebSafe": true,
+	},
+	"image/draw": map[string]bool{
+		"Draw":           true,
+		"DrawMask":       true,
+		"Drawer":         true,
+		"FloydSteinberg": true,
+		"Image":          true,
+		"Op":             true,
+		"Over":           true,
+		"Quantizer":      true,
+		"Src":            true,
+	},
+	"image/gif": map[string]bool{
+		"Decode":             true,
+		"DecodeAll":          true,
+		"DecodeConfig":       true,
+		"DisposalBackground": true,
+		"DisposalNone":       true,
+		"DisposalPrevious":   true,
+		"Encode":             true,
+		"EncodeAll":          true,
+		"GIF":                true,
+		"Options":            true,
+	},
+	"image/jpeg": map[string]bool{
+		"Decode":           true,
+		"DecodeConfig":     true,
+		"DefaultQuality":   true,
+		"Encode":           true,
+		"FormatError":      true,
+		"Options":          true,
+		"Reader":           true,
+		"UnsupportedError": true,
+	},
+	"image/png": map[string]bool{
+		"BestCompression":    true,
+		"BestSpeed":          true,
+		"CompressionLevel":   true,
+		"Decode":             true,
+		"DecodeConfig":       true,
+		"DefaultCompression": true,
+		"Encode":             true,
+		"Encoder":            true,
+		"EncoderBuffer":      true,
+		"EncoderBufferPool":  true,
+		"FormatError":        true,
+		"NoCompression":      true,
+		"UnsupportedError":   true,
+	},
+	"index/suffixarray": map[string]bool{
+		"Index": true,
+		"New":   true,
+	},
+	"io": map[string]bool{
+		"ByteReader":       true,
+		"ByteScanner":      true,
+		"ByteWriter":       true,
+		"Closer":           true,
+		"Copy":             true,
+		"CopyBuffer":       true,
+		"CopyN":            true,
+		"EOF":              true,
+		"ErrClosedPipe":    true,
+		"ErrNoProgress":    true,
+		"ErrShortBuffer":   true,
+		"ErrShortWrite":    true,
+		"ErrUnexpectedEOF": true,
+		"LimitReader":      true,
+		"LimitedReader":    true,
+		"MultiReader":      true,
+		"MultiWriter":      true,
+		"NewSectionReader": true,
+		"Pipe":             true,
+		"PipeReader":       true,
+		"PipeWriter":       true,
+		"ReadAtLeast":      true,
+		"ReadCloser":       true,
+		"ReadFull":         true,
+		"ReadSeeker":       true,
+		"ReadWriteCloser":  true,
+		"ReadWriteSeeker":  true,
+		"ReadWriter":       true,
+		"Reader":           true,
+		"ReaderAt":         true,
+		"ReaderFrom":       true,
+		"RuneReader":       true,
+		"RuneScanner":      true,
+		"SectionReader":    true,
+		"SeekCurrent":      true,
+		"SeekEnd":          true,
+		"SeekStart":        true,
+		"Seeker":           true,
+		"StringWriter":     true,
+		"TeeReader":        true,
+		"WriteCloser":      true,
+		"WriteSeeker":      true,
+		"WriteString":      true,
+		"Writer":           true,
+		"WriterAt":         true,
+		"WriterTo":         true,
+	},
+	"io/ioutil": map[string]bool{
+		"Discard":   true,
+		"NopCloser": true,
+		"ReadAll":   true,
+		"ReadDir":   true,
+		"ReadFile":  true,
+		"TempDir":   true,
+		"TempFile":  true,
+		"WriteFile": true,
+	},
+	"log": map[string]bool{
+		"Fatal":         true,
+		"Fatalf":        true,
+		"Fatalln":       true,
+		"Flags":         true,
+		"LUTC":          true,
+		"Ldate":         true,
+		"Llongfile":     true,
+		"Lmicroseconds": true,
+		"Logger":        true,
+		"Lshortfile":    true,
+		"LstdFlags":     true,
+		"Ltime":         true,
+		"New":           true,
+		"Output":        true,
+		"Panic":         true,
+		"Panicf":        true,
+		"Panicln":       true,
+		"Prefix":        true,
+		"Print":         true,
+		"Printf":        true,
+		"Println":       true,
+		"SetFlags":      true,
+		"SetOutput":     true,
+		"SetPrefix":     true,
+	},
+	"log/syslog": map[string]bool{
+		"Dial":         true,
+		"LOG_ALERT":    true,
+		"LOG_AUTH":     true,
+		"LOG_AUTHPRIV": true,
+		"LOG_CRIT":     true,
+		"LOG_CRON":     true,
+		"LOG_DAEMON":   true,
+		"LOG_DEBUG":    true,
+		"LOG_EMERG":    true,
+		"LOG_ERR":      true,
+		"LOG_FTP":      true,
+		"LOG_INFO":     true,
+		"LOG_KERN":     true,
+		"LOG_LOCAL0":   true,
+		"LOG_LOCAL1":   true,
+		"LOG_LOCAL2":   true,
+		"LOG_LOCAL3":   true,
+		"LOG_LOCAL4":   true,
+		"LOG_LOCAL5":   true,
+		"LOG_LOCAL6":   true,
+		"LOG_LOCAL7":   true,
+		"LOG_LPR":      true,
+		"LOG_MAIL":     true,
+		"LOG_NEWS":     true,
+		"LOG_NOTICE":   true,
+		"LOG_SYSLOG":   true,
+		"LOG_USER":     true,
+		"LOG_UUCP":     true,
+		"LOG_WARNING":  true,
+		"New":          true,
+		"NewLogger":    true,
+		"Priority":     true,
+		"Writer":       true,
+	},
+	"math": map[string]bool{
+		"Abs":                    true,
+		"Acos":                   true,
+		"Acosh":                  true,
+		"Asin":                   true,
+		"Asinh":                  true,
+		"Atan":                   true,
+		"Atan2":                  true,
+		"Atanh":                  true,
+		"Cbrt":                   true,
+		"Ceil":                   true,
+		"Copysign":               true,
+		"Cos":                    true,
+		"Cosh":                   true,
+		"Dim":                    true,
+		"E":                      true,
+		"Erf":                    true,
+		"Erfc":                   true,
+		"Erfcinv":                true,
+		"Erfinv":                 true,
+		"Exp":                    true,
+		"Exp2":                   true,
+		"Expm1":                  true,
+		"Float32bits":            true,
+		"Float32frombits":        true,
+		"Float64bits":            true,
+		"Float64frombits":        true,
+		"Floor":                  true,
+		"Frexp":                  true,
+		"Gamma":                  true,
+		"Hypot":                  true,
+		"Ilogb":                  true,
+		"Inf":                    true,
+		"IsInf":                  true,
+		"IsNaN":                  true,
+		"J0":                     true,
+		"J1":                     true,
+		"Jn":                     true,
+		"Ldexp":                  true,
+		"Lgamma":                 true,
+		"Ln10":                   true,
+		"Ln2":                    true,
+		"Log":                    true,
+		"Log10":                  true,
+		"Log10E":                 true,
+		"Log1p":                  true,
+		"Log2":                   true,
+		"Log2E":                  true,
+		"Logb":                   true,
+		"Max":                    true,
+		"MaxFloat32":             true,
+		"MaxFloat64":             true,
+		"MaxInt16":               true,
+		"MaxInt32":               true,
+		"MaxInt64":               true,
+		"MaxInt8":                true,
+		"MaxUint16":              true,
+		"MaxUint32":              true,
+		"MaxUint64":              true,
+		"MaxUint8":               true,
+		"Min":                    true,
+		"MinInt16":               true,
+		"MinInt32":               true,
+		"MinInt64":               true,
+		"MinInt8":                true,
+		"Mod":                    true,
+		"Modf":                   true,
+		"NaN":                    true,
+		"Nextafter":              true,
+		"Nextafter32":            true,
+		"Phi":                    true,
+		"Pi":                     true,
+		"Pow":                    true,
+		"Pow10":                  true,
+		"Remainder":              true,
+		"Round":                  true,
+		"RoundToEven":            true,
+		"Signbit":                true,
+		"Sin":                    true,
+		"Sincos":                 true,
+		"Sinh":                   true,
+		"SmallestNonzeroFloat32": true,
+		"SmallestNonzeroFloat64": true,
+		"Sqrt":                   true,
+		"Sqrt2":                  true,
+		"SqrtE":                  true,
+		"SqrtPhi":                true,
+		"SqrtPi":                 true,
+		"Tan":                    true,
+		"Tanh":                   true,
+		"Trunc":                  true,
+		"Y0":                     true,
+		"Y1":                     true,
+		"Yn":                     true,
+	},
+	"math/big": map[string]bool{
+		"Above":         true,
+		"Accuracy":      true,
+		"AwayFromZero":  true,
+		"Below":         true,
+		"ErrNaN":        true,
+		"Exact":         true,
+		"Float":         true,
+		"Int":           true,
+		"Jacobi":        true,
+		"MaxBase":       true,
+		"MaxExp":        true,
+		"MaxPrec":       true,
+		"MinExp":        true,
+		"NewFloat":      true,
+		"NewInt":        true,
+		"NewRat":        true,
+		"ParseFloat":    true,
+		"Rat":           true,
+		"RoundingMode":  true,
+		"ToNearestAway": true,
+		"ToNearestEven": true,
+		"ToNegativeInf": true,
+		"ToPositiveInf": true,
+		"ToZero":        true,
+		"Word":          true,
+	},
+	"math/bits": map[string]bool{
+		"Add":             true,
+		"Add32":           true,
+		"Add64":           true,
+		"Div":             true,
+		"Div32":           true,
+		"Div64":           true,
+		"LeadingZeros":    true,
+		"LeadingZeros16":  true,
+		"LeadingZeros32":  true,
+		"LeadingZeros64":  true,
+		"LeadingZeros8":   true,
+		"Len":             true,
+		"Len16":           true,
+		"Len32":           true,
+		"Len64":           true,
+		"Len8":            true,
+		"Mul":             true,
+		"Mul32":           true,
+		"Mul64":           true,
+		"OnesCount":       true,
+		"OnesCount16":     true,
+		"OnesCount32":     true,
+		"OnesCount64":     true,
+		"OnesCount8":      true,
+		"Reverse":         true,
+		"Reverse16":       true,
+		"Reverse32":       true,
+		"Reverse64":       true,
+		"Reverse8":        true,
+		"ReverseBytes":    true,
+		"ReverseBytes16":  true,
+		"ReverseBytes32":  true,
+		"ReverseBytes64":  true,
+		"RotateLeft":      true,
+		"RotateLeft16":    true,
+		"RotateLeft32":    true,
+		"RotateLeft64":    true,
+		"RotateLeft8":     true,
+		"Sub":             true,
+		"Sub32":           true,
+		"Sub64":           true,
+		"TrailingZeros":   true,
+		"TrailingZeros16": true,
+		"TrailingZeros32": true,
+		"TrailingZeros64": true,
+		"TrailingZeros8":  true,
+		"UintSize":        true,
+	},
+	"math/cmplx": map[string]bool{
+		"Abs":   true,
+		"Acos":  true,
+		"Acosh": true,
+		"Asin":  true,
+		"Asinh": true,
+		"Atan":  true,
+		"Atanh": true,
+		"Conj":  true,
+		"Cos":   true,
+		"Cosh":  true,
+		"Cot":   true,
+		"Exp":   true,
+		"Inf":   true,
+		"IsInf": true,
+		"IsNaN": true,
+		"Log":   true,
+		"Log10": true,
+		"NaN":   true,
+		"Phase": true,
+		"Polar": true,
+		"Pow":   true,
+		"Rect":  true,
+		"Sin":   true,
+		"Sinh":  true,
+		"Sqrt":  true,
+		"Tan":   true,
+		"Tanh":  true,
+	},
+	"math/rand": map[string]bool{
+		"ExpFloat64":  true,
+		"Float32":     true,
+		"Float64":     true,
+		"Int":         true,
+		"Int31":       true,
+		"Int31n":      true,
+		"Int63":       true,
+		"Int63n":      true,
+		"Intn":        true,
+		"New":         true,
+		"NewSource":   true,
+		"NewZipf":     true,
+		"NormFloat64": true,
+		"Perm":        true,
+		"Rand":        true,
+		"Read":        true,
+		"Seed":        true,
+		"Shuffle":     true,
+		"Source":      true,
+		"Source64":    true,
+		"Uint32":      true,
+		"Uint64":      true,
+		"Zipf":        true,
+	},
+	"mime": map[string]bool{
+		"AddExtensionType":         true,
+		"BEncoding":                true,
+		"ErrInvalidMediaParameter": true,
+		"ExtensionsByType":         true,
+		"FormatMediaType":          true,
+		"ParseMediaType":           true,
+		"QEncoding":                true,
+		"TypeByExtension":          true,
+		"WordDecoder":              true,
+		"WordEncoder":              true,
+	},
+	"mime/multipart": map[string]bool{
+		"ErrMessageTooLarge": true,
+		"File":               true,
+		"FileHeader":         true,
+		"Form":               true,
+		"NewReader":          true,
+		"NewWriter":          true,
+		"Part":               true,
+		"Reader":             true,
+		"Writer":             true,
+	},
+	"mime/quotedprintable": map[string]bool{
+		"NewReader": true,
+		"NewWriter": true,
+		"Reader":    true,
+		"Writer":    true,
+	},
+	"net": map[string]bool{
+		"Addr":                       true,
+		"AddrError":                  true,
+		"Buffers":                    true,
+		"CIDRMask":                   true,
+		"Conn":                       true,
+		"DNSConfigError":             true,
+		"DNSError":                   true,
+		"DefaultResolver":            true,
+		"Dial":                       true,
+		"DialIP":                     true,
+		"DialTCP":                    true,
+		"DialTimeout":                true,
+		"DialUDP":                    true,
+		"DialUnix":                   true,
+		"Dialer":                     true,
+		"ErrWriteToConnected":        true,
+		"Error":                      true,
+		"FileConn":                   true,
+		"FileListener":               true,
+		"FilePacketConn":             true,
+		"FlagBroadcast":              true,
+		"FlagLoopback":               true,
+		"FlagMulticast":              true,
+		"FlagPointToPoint":           true,
+		"FlagUp":                     true,
+		"Flags":                      true,
+		"HardwareAddr":               true,
+		"IP":                         true,
+		"IPAddr":                     true,
+		"IPConn":                     true,
+		"IPMask":                     true,
+		"IPNet":                      true,
+		"IPv4":                       true,
+		"IPv4Mask":                   true,
+		"IPv4allrouter":              true,
+		"IPv4allsys":                 true,
+		"IPv4bcast":                  true,
+		"IPv4len":                    true,
+		"IPv4zero":                   true,
+		"IPv6interfacelocalallnodes": true,
+		"IPv6len":                    true,
+		"IPv6linklocalallnodes":      true,
+		"IPv6linklocalallrouters":    true,
+		"IPv6loopback":               true,
+		"IPv6unspecified":            true,
+		"IPv6zero":                   true,
+		"Interface":                  true,
+		"InterfaceAddrs":             true,
+		"InterfaceByIndex":           true,
+		"InterfaceByName":            true,
+		"Interfaces":                 true,
+		"InvalidAddrError":           true,
+		"JoinHostPort":               true,
+		"Listen":                     true,
+		"ListenConfig":               true,
+		"ListenIP":                   true,
+		"ListenMulticastUDP":         true,
+		"ListenPacket":               true,
+		"ListenTCP":                  true,
+		"ListenUDP":                  true,
+		"ListenUnix":                 true,
+		"ListenUnixgram":             true,
+		"Listener":                   true,
+		"LookupAddr":                 true,
+		"LookupCNAME":                true,
+		"LookupHost":                 true,
+		"LookupIP":                   true,
+		"LookupMX":                   true,
+		"LookupNS":                   true,
+		"LookupPort":                 true,
+		"LookupSRV":                  true,
+		"LookupTXT":                  true,
+		"MX":                         true,
+		"NS":                         true,
+		"OpError":                    true,
+		"PacketConn":                 true,
+		"ParseCIDR":                  true,
+		"ParseError":                 true,
+		"ParseIP":                    true,
+		"ParseMAC":                   true,
+		"Pipe":                       true,
+		"ResolveIPAddr":              true,
+		"ResolveTCPAddr":             true,
+		"ResolveUDPAddr":             true,
+		"ResolveUnixAddr":            true,
+		"Resolver":                   true,
+		"SRV":                        true,
+		"SplitHostPort":              true,
+		"TCPAddr":                    true,
+		"TCPConn":                    true,
+		"TCPListener":                true,
+		"UDPAddr":                    true,
+		"UDPConn":                    true,
+		"UnixAddr":                   true,
+		"UnixConn":                   true,
+		"UnixListener":               true,
+		"UnknownNetworkError":        true,
+	},
+	"net/http": map[string]bool{
+		"CanonicalHeaderKey":                  true,
+		"Client":                              true,
+		"CloseNotifier":                       true,
+		"ConnState":                           true,
+		"Cookie":                              true,
+		"CookieJar":                           true,
+		"DefaultClient":                       true,
+		"DefaultMaxHeaderBytes":               true,
+		"DefaultMaxIdleConnsPerHost":          true,
+		"DefaultServeMux":                     true,
+		"DefaultTransport":                    true,
+		"DetectContentType":                   true,
+		"Dir":                                 true,
+		"ErrAbortHandler":                     true,
+		"ErrBodyNotAllowed":                   true,
+		"ErrBodyReadAfterClose":               true,
+		"ErrContentLength":                    true,
+		"ErrHandlerTimeout":                   true,
+		"ErrHeaderTooLong":                    true,
+		"ErrHijacked":                         true,
+		"ErrLineTooLong":                      true,
+		"ErrMissingBoundary":                  true,
+		"ErrMissingContentLength":             true,
+		"ErrMissingFile":                      true,
+		"ErrNoCookie":                         true,
+		"ErrNoLocation":                       true,
+		"ErrNotMultipart":                     true,
+		"ErrNotSupported":                     true,
+		"ErrServerClosed":                     true,
+		"ErrShortBody":                        true,
+		"ErrSkipAltProtocol":                  true,
+		"ErrUnexpectedTrailer":                true,
+		"ErrUseLastResponse":                  true,
+		"ErrWriteAfterFlush":                  true,
+		"Error":                               true,
+		"File":                                true,
+		"FileServer":                          true,
+		"FileSystem":                          true,
+		"Flusher":                             true,
+		"Get":                                 true,
+		"Handle":                              true,
+		"HandleFunc":                          true,
+		"Handler":                             true,
+		"HandlerFunc":                         true,
+		"Head":                                true,
+		"Header":                              true,
+		"Hijacker":                            true,
+		"ListenAndServe":                      true,
+		"ListenAndServeTLS":                   true,
+		"LocalAddrContextKey":                 true,
+		"MaxBytesReader":                      true,
+		"MethodConnect":                       true,
+		"MethodDelete":                        true,
+		"MethodGet":                           true,
+		"MethodHead":                          true,
+		"MethodOptions":                       true,
+		"MethodPatch":                         true,
+		"MethodPost":                          true,
+		"MethodPut":                           true,
+		"MethodTrace":                         true,
+		"NewFileTransport":                    true,
+		"NewRequest":                          true,
+		"NewServeMux":                         true,
+		"NoBody":                              true,
+		"NotFound":                            true,
+		"NotFoundHandler":                     true,
+		"ParseHTTPVersion":                    true,
+		"ParseTime":                           true,
+		"Post":                                true,
+		"PostForm":                            true,
+		"ProtocolError":                       true,
+		"ProxyFromEnvironment":                true,
+		"ProxyURL":                            true,
+		"PushOptions":                         true,
+		"Pusher":                              true,
+		"ReadRequest":                         true,
+		"ReadResponse":                        true,
+		"Redirect":                            true,
+		"RedirectHandler":                     true,
+		"Request":                             true,
+		"Response":                            true,
+		"ResponseWriter":                      true,
+		"RoundTripper":                        true,
+		"SameSite":                            true,
+		"SameSiteDefaultMode":                 true,
+		"SameSiteLaxMode":                     true,
+		"SameSiteStrictMode":                  true,
+		"Serve":                               true,
+		"ServeContent":                        true,
+		"ServeFile":                           true,
+		"ServeMux":                            true,
+		"ServeTLS":                            true,
+		"Server":                              true,
+		"ServerContextKey":                    true,
+		"SetCookie":                           true,
+		"StateActive":                         true,
+		"StateClosed":                         true,
+		"StateHijacked":                       true,
+		"StateIdle":                           true,
+		"StateNew":                            true,
+		"StatusAccepted":                      true,
+		"StatusAlreadyReported":               true,
+		"StatusBadGateway":                    true,
+		"StatusBadRequest":                    true,
+		"StatusConflict":                      true,
+		"StatusContinue":                      true,
+		"StatusCreated":                       true,
+		"StatusExpectationFailed":             true,
+		"StatusFailedDependency":              true,
+		"StatusForbidden":                     true,
+		"StatusFound":                         true,
+		"StatusGatewayTimeout":                true,
+		"StatusGone":                          true,
+		"StatusHTTPVersionNotSupported":       true,
+		"StatusIMUsed":                        true,
+		"StatusInsufficientStorage":           true,
+		"StatusInternalServerError":           true,
+		"StatusLengthRequired":                true,
+		"StatusLocked":                        true,
+		"StatusLoopDetected":                  true,
+		"StatusMethodNotAllowed":              true,
+		"StatusMisdirectedRequest":            true,
+		"StatusMovedPermanently":              true,
+		"StatusMultiStatus":                   true,
+		"StatusMultipleChoices":               true,
+		"StatusNetworkAuthenticationRequired": true,
+		"StatusNoContent":                     true,
+		"StatusNonAuthoritativeInfo":          true,
+		"StatusNotAcceptable":                 true,
+		"StatusNotExtended":                   true,
+		"StatusNotFound":                      true,
+		"StatusNotImplemented":                true,
+		"StatusNotModified":                   true,
+		"StatusOK":                            true,
+		"StatusPartialContent":                true,
+		"StatusPaymentRequired":               true,
+		"StatusPermanentRedirect":             true,
+		"StatusPreconditionFailed":            true,
+		"StatusPreconditionRequired":          true,
+		"StatusProcessing":                    true,
+		"StatusProxyAuthRequired":             true,
+		"StatusRequestEntityTooLarge":         true,
+		"StatusRequestHeaderFieldsTooLarge":   true,
+		"StatusRequestTimeout":                true,
+		"StatusRequestURITooLong":             true,
+		"StatusRequestedRangeNotSatisfiable":  true,
+		"StatusResetContent":                  true,
+		"StatusSeeOther":                      true,
+		"StatusServiceUnavailable":            true,
+		"StatusSwitchingProtocols":            true,
+		"StatusTeapot":                        true,
+		"StatusTemporaryRedirect":             true,
+		"StatusText":                          true,
+		"StatusTooEarly":                      true,
+		"StatusTooManyRequests":               true,
+		"StatusUnauthorized":                  true,
+		"StatusUnavailableForLegalReasons":    true,
+		"StatusUnprocessableEntity":           true,
+		"StatusUnsupportedMediaType":          true,
+		"StatusUpgradeRequired":               true,
+		"StatusUseProxy":                      true,
+		"StatusVariantAlsoNegotiates":         true,
+		"StripPrefix":                         true,
+		"TimeFormat":                          true,
+		"TimeoutHandler":                      true,
+		"TrailerPrefix":                       true,
+		"Transport":                           true,
+	},
+	"net/http/cgi": map[string]bool{
+		"Handler":        true,
+		"Request":        true,
+		"RequestFromMap": true,
+		"Serve":          true,
+	},
+	"net/http/cookiejar": map[string]bool{
+		"Jar":              true,
+		"New":              true,
+		"Options":          true,
+		"PublicSuffixList": true,
+	},
+	"net/http/fcgi": map[string]bool{
+		"ErrConnClosed":     true,
+		"ErrRequestAborted": true,
+		"ProcessEnv":        true,
+		"Serve":             true,
+	},
+	"net/http/httptest": map[string]bool{
+		"DefaultRemoteAddr":  true,
+		"NewRecorder":        true,
+		"NewRequest":         true,
+		"NewServer":          true,
+		"NewTLSServer":       true,
+		"NewUnstartedServer": true,
+		"ResponseRecorder":   true,
+		"Server":             true,
+	},
+	"net/http/httptrace": map[string]bool{
+		"ClientTrace":        true,
+		"ContextClientTrace": true,
+		"DNSDoneInfo":        true,
+		"DNSStartInfo":       true,
+		"GotConnInfo":        true,
+		"WithClientTrace":    true,
+		"WroteRequestInfo":   true,
+	},
+	"net/http/httputil": map[string]bool{
+		"BufferPool":                true,
+		"ClientConn":                true,
+		"DumpRequest":               true,
+		"DumpRequestOut":            true,
+		"DumpResponse":              true,
+		"ErrClosed":                 true,
+		"ErrLineTooLong":            true,
+		"ErrPersistEOF":             true,
+		"ErrPipeline":               true,
+		"NewChunkedReader":          true,
+		"NewChunkedWriter":          true,
+		"NewClientConn":             true,
+		"NewProxyClientConn":        true,
+		"NewServerConn":             true,
+		"NewSingleHostReverseProxy": true,
+		"ReverseProxy":              true,
+		"ServerConn":                true,
+	},
+	"net/http/pprof": map[string]bool{
+		"Cmdline": true,
+		"Handler": true,
+		"Index":   true,
+		"Profile": true,
+		"Symbol":  true,
+		"Trace":   true,
+	},
+	"net/mail": map[string]bool{
+		"Address":             true,
+		"AddressParser":       true,
+		"ErrHeaderNotPresent": true,
+		"Header":              true,
+		"Message":             true,
+		"ParseAddress":        true,
+		"ParseAddressList":    true,
+		"ParseDate":           true,
+		"ReadMessage":         true,
+	},
+	"net/rpc": map[string]bool{
+		"Accept":             true,
+		"Call":               true,
+		"Client":             true,
+		"ClientCodec":        true,
+		"DefaultDebugPath":   true,
+		"DefaultRPCPath":     true,
+		"DefaultServer":      true,
+		"Dial":               true,
+		"DialHTTP":           true,
+		"DialHTTPPath":       true,
+		"ErrShutdown":        true,
+		"HandleHTTP":         true,
+		"NewClient":          true,
+		"NewClientWithCodec": true,
+		"NewServer":          true,
+		"Register":           true,
+		"RegisterName":       true,
+		"Request":            true,
+		"Response":           true,
+		"ServeCodec":         true,
+		"ServeConn":          true,
+		"ServeRequest":       true,
+		"Server":             true,
+		"ServerCodec":        true,
+		"ServerError":        true,
+	},
+	"net/rpc/jsonrpc": map[string]bool{
+		"Dial":           true,
+		"NewClient":      true,
+		"NewClientCodec": true,
+		"NewServerCodec": true,
+		"ServeConn":      true,
+	},
+	"net/smtp": map[string]bool{
+		"Auth":        true,
+		"CRAMMD5Auth": true,
+		"Client":      true,
+		"Dial":        true,
+		"NewClient":   true,
+		"PlainAuth":   true,
+		"SendMail":    true,
+		"ServerInfo":  true,
+	},
+	"net/textproto": map[string]bool{
+		"CanonicalMIMEHeaderKey": true,
+		"Conn":                   true,
+		"Dial":                   true,
+		"Error":                  true,
+		"MIMEHeader":             true,
+		"NewConn":                true,
+		"NewReader":              true,
+		"NewWriter":              true,
+		"Pipeline":               true,
+		"ProtocolError":          true,
+		"Reader":                 true,
+		"TrimBytes":              true,
+		"TrimString":             true,
+		"Writer":                 true,
+	},
+	"net/url": map[string]bool{
+		"Error":            true,
+		"EscapeError":      true,
+		"InvalidHostError": true,
+		"Parse":            true,
+		"ParseQuery":       true,
+		"ParseRequestURI":  true,
+		"PathEscape":       true,
+		"PathUnescape":     true,
+		"QueryEscape":      true,
+		"QueryUnescape":    true,
+		"URL":              true,
+		"User":             true,
+		"UserPassword":     true,
+		"Userinfo":         true,
+		"Values":           true,
+	},
+	"os": map[string]bool{
+		"Args":              true,
+		"Chdir":             true,
+		"Chmod":             true,
+		"Chown":             true,
+		"Chtimes":           true,
+		"Clearenv":          true,
+		"Create":            true,
+		"DevNull":           true,
+		"Environ":           true,
+		"ErrClosed":         true,
+		"ErrExist":          true,
+		"ErrInvalid":        true,
+		"ErrNoDeadline":     true,
+		"ErrNotExist":       true,
+		"ErrPermission":     true,
+		"Executable":        true,
+		"Exit":              true,
+		"Expand":            true,
+		"ExpandEnv":         true,
+		"File":              true,
+		"FileInfo":          true,
+		"FileMode":          true,
+		"FindProcess":       true,
+		"Getegid":           true,
+		"Getenv":            true,
+		"Geteuid":           true,
+		"Getgid":            true,
+		"Getgroups":         true,
+		"Getpagesize":       true,
+		"Getpid":            true,
+		"Getppid":           true,
+		"Getuid":            true,
+		"Getwd":             true,
+		"Hostname":          true,
+		"Interrupt":         true,
+		"IsExist":           true,
+		"IsNotExist":        true,
+		"IsPathSeparator":   true,
+		"IsPermission":      true,
+		"IsTimeout":         true,
+		"Kill":              true,
+		"Lchown":            true,
+		"Link":              true,
+		"LinkError":         true,
+		"LookupEnv":         true,
+		"Lstat":             true,
+		"Mkdir":             true,
+		"MkdirAll":          true,
+		"ModeAppend":        true,
+		"ModeCharDevice":    true,
+		"ModeDevice":        true,
+		"ModeDir":           true,
+		"ModeExclusive":     true,
+		"ModeIrregular":     true,
+		"ModeNamedPipe":     true,
+		"ModePerm":          true,
+		"ModeSetgid":        true,
+		"ModeSetuid":        true,
+		"ModeSocket":        true,
+		"ModeSticky":        true,
+		"ModeSymlink":       true,
+		"ModeTemporary":     true,
+		"ModeType":          true,
+		"NewFile":           true,
+		"NewSyscallError":   true,
+		"O_APPEND":          true,
+		"O_CREATE":          true,
+		"O_EXCL":            true,
+		"O_RDONLY":          true,
+		"O_RDWR":            true,
+		"O_SYNC":            true,
+		"O_TRUNC":           true,
+		"O_WRONLY":          true,
+		"Open":              true,
+		"OpenFile":          true,
+		"PathError":         true,
+		"PathListSeparator": true,
+		"PathSeparator":     true,
+		"Pipe":              true,
+		"ProcAttr":          true,
+		"Process":           true,
+		"ProcessState":      true,
+		"Readlink":          true,
+		"Remove":            true,
+		"RemoveAll":         true,
+		"Rename":            true,
+		"SEEK_CUR":          true,
+		"SEEK_END":          true,
+		"SEEK_SET":          true,
+		"SameFile":          true,
+		"Setenv":            true,
+		"Signal":            true,
+		"StartProcess":      true,
+		"Stat":              true,
+		"Stderr":            true,
+		"Stdin":             true,
+		"Stdout":            true,
+		"Symlink":           true,
+		"SyscallError":      true,
+		"TempDir":           true,
+		"Truncate":          true,
+		"Unsetenv":          true,
+		"UserCacheDir":      true,
+		"UserHomeDir":       true,
+	},
+	"os/exec": map[string]bool{
+		"Cmd":            true,
+		"Command":        true,
+		"CommandContext": true,
+		"ErrNotFound":    true,
+		"Error":          true,
+		"ExitError":      true,
+		"LookPath":       true,
+	},
+	"os/signal": map[string]bool{
+		"Ignore":  true,
+		"Ignored": true,
+		"Notify":  true,
+		"Reset":   true,
+		"Stop":    true,
+	},
+	"os/user": map[string]bool{
+		"Current":             true,
+		"Group":               true,
+		"Lookup":              true,
+		"LookupGroup":         true,
+		"LookupGroupId":       true,
+		"LookupId":            true,
+		"UnknownGroupError":   true,
+		"UnknownGroupIdError": true,
+		"UnknownUserError":    true,
+		"UnknownUserIdError":  true,
+		"User":                true,
+	},
+	"path": map[string]bool{
+		"Base":          true,
+		"Clean":         true,
+		"Dir":           true,
+		"ErrBadPattern": true,
+		"Ext":           true,
+		"IsAbs":         true,
+		"Join":          true,
+		"Match":         true,
+		"Split":         true,
+	},
+	"path/filepath": map[string]bool{
+		"Abs":           true,
+		"Base":          true,
+		"Clean":         true,
+		"Dir":           true,
+		"ErrBadPattern": true,
+		"EvalSymlinks":  true,
+		"Ext":           true,
+		"FromSlash":     true,
+		"Glob":          true,
+		"HasPrefix":     true,
+		"IsAbs":         true,
+		"Join":          true,
+		"ListSeparator": true,
+		"Match":         true,
+		"Rel":           true,
+		"Separator":     true,
+		"SkipDir":       true,
+		"Split":         true,
+		"SplitList":     true,
+		"ToSlash":       true,
+		"VolumeName":    true,
+		"Walk":          true,
+		"WalkFunc":      true,
+	},
+	"plugin": map[string]bool{
+		"Open":   true,
+		"Plugin": true,
+		"Symbol": true,
+	},
+	"reflect": map[string]bool{
+		"Append":          true,
+		"AppendSlice":     true,
+		"Array":           true,
+		"ArrayOf":         true,
+		"Bool":            true,
+		"BothDir":         true,
+		"Chan":            true,
+		"ChanDir":         true,
+		"ChanOf":          true,
+		"Complex128":      true,
+		"Complex64":       true,
+		"Copy":            true,
+		"DeepEqual":       true,
+		"Float32":         true,
+		"Float64":         true,
+		"Func":            true,
+		"FuncOf":          true,
+		"Indirect":        true,
+		"Int":             true,
+		"Int16":           true,
+		"Int32":           true,
+		"Int64":           true,
+		"Int8":            true,
+		"Interface":       true,
+		"Invalid":         true,
+		"Kind":            true,
+		"MakeChan":        true,
+		"MakeFunc":        true,
+		"MakeMap":         true,
+		"MakeMapWithSize": true,
+		"MakeSlice":       true,
+		"Map":             true,
+		"MapIter":         true,
+		"MapOf":           true,
+		"Method":          true,
+		"New":             true,
+		"NewAt":           true,
+		"Ptr":             true,
+		"PtrTo":           true,
+		"RecvDir":         true,
+		"Select":          true,
+		"SelectCase":      true,
+		"SelectDefault":   true,
+		"SelectDir":       true,
+		"SelectRecv":      true,
+		"SelectSend":      true,
+		"SendDir":         true,
+		"Slice":           true,
+		"SliceHeader":     true,
+		"SliceOf":         true,
+		"String":          true,
+		"StringHeader":    true,
+		"Struct":          true,
+		"StructField":     true,
+		"StructOf":        true,
+		"StructTag":       true,
+		"Swapper":         true,
+		"TypeOf":          true,
+		"Uint":            true,
+		"Uint16":          true,
+		"Uint32":          true,
+		"Uint64":          true,
+		"Uint8":           true,
+		"Uintptr":         true,
+		"UnsafePointer":   true,
+		"Value":           true,
+		"ValueError":      true,
+		"ValueOf":         true,
+		"Zero":            true,
+	},
+	"regexp": map[string]bool{
+		"Compile":          true,
+		"CompilePOSIX":     true,
+		"Match":            true,
+		"MatchReader":      true,
+		"MatchString":      true,
+		"MustCompile":      true,
+		"MustCompilePOSIX": true,
+		"QuoteMeta":        true,
+		"Regexp":           true,
+	},
+	"regexp/syntax": map[string]bool{
+		"ClassNL":                  true,
+		"Compile":                  true,
+		"DotNL":                    true,
+		"EmptyBeginLine":           true,
+		"EmptyBeginText":           true,
+		"EmptyEndLine":             true,
+		"EmptyEndText":             true,
+		"EmptyNoWordBoundary":      true,
+		"EmptyOp":                  true,
+		"EmptyOpContext":           true,
+		"EmptyWordBoundary":        true,
+		"ErrInternalError":         true,
+		"ErrInvalidCharClass":      true,
+		"ErrInvalidCharRange":      true,
+		"ErrInvalidEscape":         true,
+		"ErrInvalidNamedCapture":   true,
+		"ErrInvalidPerlOp":         true,
+		"ErrInvalidRepeatOp":       true,
+		"ErrInvalidRepeatSize":     true,
+		"ErrInvalidUTF8":           true,
+		"ErrMissingBracket":        true,
+		"ErrMissingParen":          true,
+		"ErrMissingRepeatArgument": true,
+		"ErrTrailingBackslash":     true,
+		"ErrUnexpectedParen":       true,
+		"Error":                    true,
+		"ErrorCode":                true,
+		"Flags":                    true,
+		"FoldCase":                 true,
+		"Inst":                     true,
+		"InstAlt":                  true,
+		"InstAltMatch":             true,
+		"InstCapture":              true,
+		"InstEmptyWidth":           true,
+		"InstFail":                 true,
+		"InstMatch":                true,
+		"InstNop":                  true,
+		"InstOp":                   true,
+		"InstRune":                 true,
+		"InstRune1":                true,
+		"InstRuneAny":              true,
+		"InstRuneAnyNotNL":         true,
+		"IsWordChar":               true,
+		"Literal":                  true,
+		"MatchNL":                  true,
+		"NonGreedy":                true,
+		"OneLine":                  true,
+		"Op":                       true,
+		"OpAlternate":              true,
+		"OpAnyChar":                true,
+		"OpAnyCharNotNL":           true,
+		"OpBeginLine":              true,
+		"OpBeginText":              true,
+		"OpCapture":                true,
+		"OpCharClass":              true,
+		"OpConcat":                 true,
+		"OpEmptyMatch":             true,
+		"OpEndLine":                true,
+		"OpEndText":                true,
+		"OpLiteral":                true,
+		"OpNoMatch":                true,
+		"OpNoWordBoundary":         true,
+		"OpPlus":                   true,
+		"OpQuest":                  true,
+		"OpRepeat":                 true,
+		"OpStar":                   true,
+		"OpWordBoundary":           true,
+		"POSIX":                    true,
+		"Parse":                    true,
+		"Perl":                     true,
+		"PerlX":                    true,
+		"Prog":                     true,
+		"Regexp":                   true,
+		"Simple":                   true,
+		"UnicodeGroups":            true,
+		"WasDollar":                true,
+	},
+	"runtime": map[string]bool{
+		"BlockProfile":            true,
+		"BlockProfileRecord":      true,
+		"Breakpoint":              true,
+		"CPUProfile":              true,
+		"Caller":                  true,
+		"Callers":                 true,
+		"CallersFrames":           true,
+		"Compiler":                true,
+		"Error":                   true,
+		"Frame":                   true,
+		"Frames":                  true,
+		"Func":                    true,
+		"FuncForPC":               true,
+		"GC":                      true,
+		"GOARCH":                  true,
+		"GOMAXPROCS":              true,
+		"GOOS":                    true,
+		"GOROOT":                  true,
+		"Goexit":                  true,
+		"GoroutineProfile":        true,
+		"Gosched":                 true,
+		"KeepAlive":               true,
+		"LockOSThread":            true,
+		"MemProfile":              true,
+		"MemProfileRate":          true,
+		"MemProfileRecord":        true,
+		"MemStats":                true,
+		"MutexProfile":            true,
+		"NumCPU":                  true,
+		"NumCgoCall":              true,
+		"NumGoroutine":            true,
+		"ReadMemStats":            true,
+		"ReadTrace":               true,
+		"SetBlockProfileRate":     true,
+		"SetCPUProfileRate":       true,
+		"SetCgoTraceback":         true,
+		"SetFinalizer":            true,
+		"SetMutexProfileFraction": true,
+		"Stack":                   true,
+		"StackRecord":             true,
+		"StartTrace":              true,
+		"StopTrace":               true,
+		"ThreadCreateProfile":     true,
+		"TypeAssertionError":      true,
+		"UnlockOSThread":          true,
+		"Version":                 true,
+	},
+	"runtime/debug": map[string]bool{
+		"BuildInfo":       true,
+		"FreeOSMemory":    true,
+		"GCStats":         true,
+		"Module":          true,
+		"PrintStack":      true,
+		"ReadBuildInfo":   true,
+		"ReadGCStats":     true,
+		"SetGCPercent":    true,
+		"SetMaxStack":     true,
+		"SetMaxThreads":   true,
+		"SetPanicOnFault": true,
+		"SetTraceback":    true,
+		"Stack":           true,
+		"WriteHeapDump":   true,
+	},
+	"runtime/pprof": map[string]bool{
+		"Do":                 true,
+		"ForLabels":          true,
+		"Label":              true,
+		"LabelSet":           true,
+		"Labels":             true,
+		"Lookup":             true,
+		"NewProfile":         true,
+		"Profile":            true,
+		"Profiles":           true,
+		"SetGoroutineLabels": true,
+		"StartCPUProfile":    true,
+		"StopCPUProfile":     true,
+		"WithLabels":         true,
+		"WriteHeapProfile":   true,
+	},
+	"runtime/trace": map[string]bool{
+		"IsEnabled":   true,
+		"Log":         true,
+		"Logf":        true,
+		"NewTask":     true,
+		"Region":      true,
+		"Start":       true,
+		"StartRegion": true,
+		"Stop":        true,
+		"Task":        true,
+		"WithRegion":  true,
+	},
+	"sort": map[string]bool{
+		"Float64Slice":      true,
+		"Float64s":          true,
+		"Float64sAreSorted": true,
+		"IntSlice":          true,
+		"Interface":         true,
+		"Ints":              true,
+		"IntsAreSorted":     true,
+		"IsSorted":          true,
+		"Reverse":           true,
+		"Search":            true,
+		"SearchFloat64s":    true,
+		"SearchInts":        true,
+		"SearchStrings":     true,
+		"Slice":             true,
+		"SliceIsSorted":     true,
+		"SliceStable":       true,
+		"Sort":              true,
+		"Stable":            true,
+		"StringSlice":       true,
+		"Strings":           true,
+		"StringsAreSorted":  true,
+	},
+	"strconv": map[string]bool{
+		"AppendBool":               true,
+		"AppendFloat":              true,
+		"AppendInt":                true,
+		"AppendQuote":              true,
+		"AppendQuoteRune":          true,
+		"AppendQuoteRuneToASCII":   true,
+		"AppendQuoteRuneToGraphic": true,
+		"AppendQuoteToASCII":       true,
+		"AppendQuoteToGraphic":     true,
+		"AppendUint":               true,
+		"Atoi":                     true,
+		"CanBackquote":             true,
+		"ErrRange":                 true,
+		"ErrSyntax":                true,
+		"FormatBool":               true,
+		"FormatFloat":              true,
+		"FormatInt":                true,
+		"FormatUint":               true,
+		"IntSize":                  true,
+		"IsGraphic":                true,
+		"IsPrint":                  true,
+		"Itoa":                     true,
+		"NumError":                 true,
+		"ParseBool":                true,
+		"ParseFloat":               true,
+		"ParseInt":                 true,
+		"ParseUint":                true,
+		"Quote":                    true,
+		"QuoteRune":                true,
+		"QuoteRuneToASCII":         true,
+		"QuoteRuneToGraphic":       true,
+		"QuoteToASCII":             true,
+		"QuoteToGraphic":           true,
+		"Unquote":                  true,
+		"UnquoteChar":              true,
+	},
+	"strings": map[string]bool{
+		"Builder":        true,
+		"Compare":        true,
+		"Contains":       true,
+		"ContainsAny":    true,
+		"ContainsRune":   true,
+		"Count":          true,
+		"EqualFold":      true,
+		"Fields":         true,
+		"FieldsFunc":     true,
+		"HasPrefix":      true,
+		"HasSuffix":      true,
+		"Index":          true,
+		"IndexAny":       true,
+		"IndexByte":      true,
+		"IndexFunc":      true,
+		"IndexRune":      true,
+		"Join":           true,
+		"LastIndex":      true,
+		"LastIndexAny":   true,
+		"LastIndexByte":  true,
+		"LastIndexFunc":  true,
+		"Map":            true,
+		"NewReader":      true,
+		"NewReplacer":    true,
+		"Reader":         true,
+		"Repeat":         true,
+		"Replace":        true,
+		"ReplaceAll":     true,
+		"Replacer":       true,
+		"Split":          true,
+		"SplitAfter":     true,
+		"SplitAfterN":    true,
+		"SplitN":         true,
+		"Title":          true,
+		"ToLower":        true,
+		"ToLowerSpecial": true,
+		"ToTitle":        true,
+		"ToTitleSpecial": true,
+		"ToUpper":        true,
+		"ToUpperSpecial": true,
+		"Trim":           true,
+		"TrimFunc":       true,
+		"TrimLeft":       true,
+		"TrimLeftFunc":   true,
+		"TrimPrefix":     true,
+		"TrimRight":      true,
+		"TrimRightFunc":  true,
+		"TrimSpace":      true,
+		"TrimSuffix":     true,
+	},
+	"sync": map[string]bool{
+		"Cond":      true,
+		"Locker":    true,
+		"Map":       true,
+		"Mutex":     true,
+		"NewCond":   true,
+		"Once":      true,
+		"Pool":      true,
+		"RWMutex":   true,
+		"WaitGroup": true,
+	},
+	"sync/atomic": map[string]bool{
+		"AddInt32":              true,
+		"AddInt64":              true,
+		"AddUint32":             true,
+		"AddUint64":             true,
+		"AddUintptr":            true,
+		"CompareAndSwapInt32":   true,
+		"CompareAndSwapInt64":   true,
+		"CompareAndSwapPointer": true,
+		"CompareAndSwapUint32":  true,
+		"CompareAndSwapUint64":  true,
+		"CompareAndSwapUintptr": true,
+		"LoadInt32":             true,
+		"LoadInt64":             true,
+		"LoadPointer":           true,
+		"LoadUint32":            true,
+		"LoadUint64":            true,
+		"LoadUintptr":           true,
+		"StoreInt32":            true,
+		"StoreInt64":            true,
+		"StorePointer":          true,
+		"StoreUint32":           true,
+		"StoreUint64":           true,
+		"StoreUintptr":          true,
+		"SwapInt32":             true,
+		"SwapInt64":             true,
+		"SwapPointer":           true,
+		"SwapUint32":            true,
+		"SwapUint64":            true,
+		"SwapUintptr":           true,
+		"Value":                 true,
+	},
+	"syscall": map[string]bool{
+		"AF_ALG":                              true,
+		"AF_APPLETALK":                        true,
+		"AF_ARP":                              true,
+		"AF_ASH":                              true,
+		"AF_ATM":                              true,
+		"AF_ATMPVC":                           true,
+		"AF_ATMSVC":                           true,
+		"AF_AX25":                             true,
+		"AF_BLUETOOTH":                        true,
+		"AF_BRIDGE":                           true,
+		"AF_CAIF":                             true,
+		"AF_CAN":                              true,
+		"AF_CCITT":                            true,
+		"AF_CHAOS":                            true,
+		"AF_CNT":                              true,
+		"AF_COIP":                             true,
+		"AF_DATAKIT":                          true,
+		"AF_DECnet":                           true,
+		"AF_DLI":                              true,
+		"AF_E164":                             true,
+		"AF_ECMA":                             true,
+		"AF_ECONET":                           true,
+		"AF_ENCAP":                            true,
+		"AF_FILE":                             true,
+		"AF_HYLINK":                           true,
+		"AF_IEEE80211":                        true,
+		"AF_IEEE802154":                       true,
+		"AF_IMPLINK":                          true,
+		"AF_INET":                             true,
+		"AF_INET6":                            true,
+		"AF_INET6_SDP":                        true,
+		"AF_INET_SDP":                         true,
+		"AF_IPX":                              true,
+		"AF_IRDA":                             true,
+		"AF_ISDN":                             true,
+		"AF_ISO":                              true,
+		"AF_IUCV":                             true,
+		"AF_KEY":                              true,
+		"AF_LAT":                              true,
+		"AF_LINK":                             true,
+		"AF_LLC":                              true,
+		"AF_LOCAL":                            true,
+		"AF_MAX":                              true,
+		"AF_MPLS":                             true,
+		"AF_NATM":                             true,
+		"AF_NDRV":                             true,
+		"AF_NETBEUI":                          true,
+		"AF_NETBIOS":                          true,
+		"AF_NETGRAPH":                         true,
+		"AF_NETLINK":                          true,
+		"AF_NETROM":                           true,
+		"AF_NS":                               true,
+		"AF_OROUTE":                           true,
+		"AF_OSI":                              true,
+		"AF_PACKET":                           true,
+		"AF_PHONET":                           true,
+		"AF_PPP":                              true,
+		"AF_PPPOX":                            true,
+		"AF_PUP":                              true,
+		"AF_RDS":                              true,
+		"AF_RESERVED_36":                      true,
+		"AF_ROSE":                             true,
+		"AF_ROUTE":                            true,
+		"AF_RXRPC":                            true,
+		"AF_SCLUSTER":                         true,
+		"AF_SECURITY":                         true,
+		"AF_SIP":                              true,
+		"AF_SLOW":                             true,
+		"AF_SNA":                              true,
+		"AF_SYSTEM":                           true,
+		"AF_TIPC":                             true,
+		"AF_UNIX":                             true,
+		"AF_UNSPEC":                           true,
+		"AF_VENDOR00":                         true,
+		"AF_VENDOR01":                         true,
+		"AF_VENDOR02":                         true,
+		"AF_VENDOR03":                         true,
+		"AF_VENDOR04":                         true,
+		"AF_VENDOR05":                         true,
+		"AF_VENDOR06":                         true,
+		"AF_VENDOR07":                         true,
+		"AF_VENDOR08":                         true,
+		"AF_VENDOR09":                         true,
+		"AF_VENDOR10":                         true,
+		"AF_VENDOR11":                         true,
+		"AF_VENDOR12":                         true,
+		"AF_VENDOR13":                         true,
+		"AF_VENDOR14":                         true,
+		"AF_VENDOR15":                         true,
+		"AF_VENDOR16":                         true,
+		"AF_VENDOR17":                         true,
+		"AF_VENDOR18":                         true,
+		"AF_VENDOR19":                         true,
+		"AF_VENDOR20":                         true,
+		"AF_VENDOR21":                         true,
+		"AF_VENDOR22":                         true,
+		"AF_VENDOR23":                         true,
+		"AF_VENDOR24":                         true,
+		"AF_VENDOR25":                         true,
+		"AF_VENDOR26":                         true,
+		"AF_VENDOR27":                         true,
+		"AF_VENDOR28":                         true,
+		"AF_VENDOR29":                         true,
+		"AF_VENDOR30":                         true,
+		"AF_VENDOR31":                         true,
+		"AF_VENDOR32":                         true,
+		"AF_VENDOR33":                         true,
+		"AF_VENDOR34":                         true,
+		"AF_VENDOR35":                         true,
+		"AF_VENDOR36":                         true,
+		"AF_VENDOR37":                         true,
+		"AF_VENDOR38":                         true,
+		"AF_VENDOR39":                         true,
+		"AF_VENDOR40":                         true,
+		"AF_VENDOR41":                         true,
+		"AF_VENDOR42":                         true,
+		"AF_VENDOR43":                         true,
+		"AF_VENDOR44":                         true,
+		"AF_VENDOR45":                         true,
+		"AF_VENDOR46":                         true,
+		"AF_VENDOR47":                         true,
+		"AF_WANPIPE":                          true,
+		"AF_X25":                              true,
+		"AI_CANONNAME":                        true,
+		"AI_NUMERICHOST":                      true,
+		"AI_PASSIVE":                          true,
+		"APPLICATION_ERROR":                   true,
+		"ARPHRD_ADAPT":                        true,
+		"ARPHRD_APPLETLK":                     true,
+		"ARPHRD_ARCNET":                       true,
+		"ARPHRD_ASH":                          true,
+		"ARPHRD_ATM":                          true,
+		"ARPHRD_AX25":                         true,
+		"ARPHRD_BIF":                          true,
+		"ARPHRD_CHAOS":                        true,
+		"ARPHRD_CISCO":                        true,
+		"ARPHRD_CSLIP":                        true,
+		"ARPHRD_CSLIP6":                       true,
+		"ARPHRD_DDCMP":                        true,
+		"ARPHRD_DLCI":                         true,
+		"ARPHRD_ECONET":                       true,
+		"ARPHRD_EETHER":                       true,
+		"ARPHRD_ETHER":                        true,
+		"ARPHRD_EUI64":                        true,
+		"ARPHRD_FCAL":                         true,
+		"ARPHRD_FCFABRIC":                     true,
+		"ARPHRD_FCPL":                         true,
+		"ARPHRD_FCPP":                         true,
+		"ARPHRD_FDDI":                         true,
+		"ARPHRD_FRAD":                         true,
+		"ARPHRD_FRELAY":                       true,
+		"ARPHRD_HDLC":                         true,
+		"ARPHRD_HIPPI":                        true,
+		"ARPHRD_HWX25":                        true,
+		"ARPHRD_IEEE1394":                     true,
+		"ARPHRD_IEEE802":                      true,
+		"ARPHRD_IEEE80211":                    true,
+		"ARPHRD_IEEE80211_PRISM":              true,
+		"ARPHRD_IEEE80211_RADIOTAP":           true,
+		"ARPHRD_IEEE802154":                   true,
+		"ARPHRD_IEEE802154_PHY":               true,
+		"ARPHRD_IEEE802_TR":                   true,
+		"ARPHRD_INFINIBAND":                   true,
+		"ARPHRD_IPDDP":                        true,
+		"ARPHRD_IPGRE":                        true,
+		"ARPHRD_IRDA":                         true,
+		"ARPHRD_LAPB":                         true,
+		"ARPHRD_LOCALTLK":                     true,
+		"ARPHRD_LOOPBACK":                     true,
+		"ARPHRD_METRICOM":                     true,
+		"ARPHRD_NETROM":                       true,
+		"ARPHRD_NONE":                         true,
+		"ARPHRD_PIMREG":                       true,
+		"ARPHRD_PPP":                          true,
+		"ARPHRD_PRONET":                       true,
+		"ARPHRD_RAWHDLC":                      true,
+		"ARPHRD_ROSE":                         true,
+		"ARPHRD_RSRVD":                        true,
+		"ARPHRD_SIT":                          true,
+		"ARPHRD_SKIP":                         true,
+		"ARPHRD_SLIP":                         true,
+		"ARPHRD_SLIP6":                        true,
+		"ARPHRD_STRIP":                        true,
+		"ARPHRD_TUNNEL":                       true,
+		"ARPHRD_TUNNEL6":                      true,
+		"ARPHRD_VOID":                         true,
+		"ARPHRD_X25":                          true,
+		"AUTHTYPE_CLIENT":                     true,
+		"AUTHTYPE_SERVER":                     true,
+		"Accept":                              true,
+		"Accept4":                             true,
+		"AcceptEx":                            true,
+		"Access":                              true,
+		"Acct":                                true,
+		"AddrinfoW":                           true,
+		"Adjtime":                             true,
+		"Adjtimex":                            true,
+		"AttachLsf":                           true,
+		"B0":                                  true,
+		"B1000000":                            true,
+		"B110":                                true,
+		"B115200":                             true,
+		"B1152000":                            true,
+		"B1200":                               true,
+		"B134":                                true,
+		"B14400":                              true,
+		"B150":                                true,
+		"B1500000":                            true,
+		"B1800":                               true,
+		"B19200":                              true,
+		"B200":                                true,
+		"B2000000":                            true,
+		"B230400":                             true,
+		"B2400":                               true,
+		"B2500000":                            true,
+		"B28800":                              true,
+		"B300":                                true,
+		"B3000000":                            true,
+		"B3500000":                            true,
+		"B38400":                              true,
+		"B4000000":                            true,
+		"B460800":                             true,
+		"B4800":                               true,
+		"B50":                                 true,
+		"B500000":                             true,
+		"B57600":                              true,
+		"B576000":                             true,
+		"B600":                                true,
+		"B7200":                               true,
+		"B75":                                 true,
+		"B76800":                              true,
+		"B921600":                             true,
+		"B9600":                               true,
+		"BASE_PROTOCOL":                       true,
+		"BIOCFEEDBACK":                        true,
+		"BIOCFLUSH":                           true,
+		"BIOCGBLEN":                           true,
+		"BIOCGDIRECTION":                      true,
+		"BIOCGDIRFILT":                        true,
+		"BIOCGDLT":                            true,
+		"BIOCGDLTLIST":                        true,
+		"BIOCGETBUFMODE":                      true,
+		"BIOCGETIF":                           true,
+		"BIOCGETZMAX":                         true,
+		"BIOCGFEEDBACK":                       true,
+		"BIOCGFILDROP":                        true,
+		"BIOCGHDRCMPLT":                       true,
+		"BIOCGRSIG":                           true,
+		"BIOCGRTIMEOUT":                       true,
+		"BIOCGSEESENT":                        true,
+		"BIOCGSTATS":                          true,
+		"BIOCGSTATSOLD":                       true,
+		"BIOCGTSTAMP":                         true,
+		"BIOCIMMEDIATE":                       true,
+		"BIOCLOCK":                            true,
+		"BIOCPROMISC":                         true,
+		"BIOCROTZBUF":                         true,
+		"BIOCSBLEN":                           true,
+		"BIOCSDIRECTION":                      true,
+		"BIOCSDIRFILT":                        true,
+		"BIOCSDLT":                            true,
+		"BIOCSETBUFMODE":                      true,
+		"BIOCSETF":                            true,
+		"BIOCSETFNR":                          true,
+		"BIOCSETIF":                           true,
+		"BIOCSETWF":                           true,
+		"BIOCSETZBUF":                         true,
+		"BIOCSFEEDBACK":                       true,
+		"BIOCSFILDROP":                        true,
+		"BIOCSHDRCMPLT":                       true,
+		"BIOCSRSIG":                           true,
+		"BIOCSRTIMEOUT":                       true,
+		"BIOCSSEESENT":                        true,
+		"BIOCSTCPF":                           true,
+		"BIOCSTSTAMP":                         true,
+		"BIOCSUDPF":                           true,
+		"BIOCVERSION":                         true,
+		"BPF_A":                               true,
+		"BPF_ABS":                             true,
+		"BPF_ADD":                             true,
+		"BPF_ALIGNMENT":                       true,
+		"BPF_ALIGNMENT32":                     true,
+		"BPF_ALU":                             true,
+		"BPF_AND":                             true,
+		"BPF_B":                               true,
+		"BPF_BUFMODE_BUFFER":                  true,
+		"BPF_BUFMODE_ZBUF":                    true,
+		"BPF_DFLTBUFSIZE":                     true,
+		"BPF_DIRECTION_IN":                    true,
+		"BPF_DIRECTION_OUT":                   true,
+		"BPF_DIV":                             true,
+		"BPF_H":                               true,
+		"BPF_IMM":                             true,
+		"BPF_IND":                             true,
+		"BPF_JA":                              true,
+		"BPF_JEQ":                             true,
+		"BPF_JGE":                             true,
+		"BPF_JGT":                             true,
+		"BPF_JMP":                             true,
+		"BPF_JSET":                            true,
+		"BPF_K":                               true,
+		"BPF_LD":                              true,
+		"BPF_LDX":                             true,
+		"BPF_LEN":                             true,
+		"BPF_LSH":                             true,
+		"BPF_MAJOR_VERSION":                   true,
+		"BPF_MAXBUFSIZE":                      true,
+		"BPF_MAXINSNS":                        true,
+		"BPF_MEM":                             true,
+		"BPF_MEMWORDS":                        true,
+		"BPF_MINBUFSIZE":                      true,
+		"BPF_MINOR_VERSION":                   true,
+		"BPF_MISC":                            true,
+		"BPF_MSH":                             true,
+		"BPF_MUL":                             true,
+		"BPF_NEG":                             true,
+		"BPF_OR":                              true,
+		"BPF_RELEASE":                         true,
+		"BPF_RET":                             true,
+		"BPF_RSH":                             true,
+		"BPF_ST":                              true,
+		"BPF_STX":                             true,
+		"BPF_SUB":                             true,
+		"BPF_TAX":                             true,
+		"BPF_TXA":                             true,
+		"BPF_T_BINTIME":                       true,
+		"BPF_T_BINTIME_FAST":                  true,
+		"BPF_T_BINTIME_MONOTONIC":             true,
+		"BPF_T_BINTIME_MONOTONIC_FAST":        true,
+		"BPF_T_FAST":                          true,
+		"BPF_T_FLAG_MASK":                     true,
+		"BPF_T_FORMAT_MASK":                   true,
+		"BPF_T_MICROTIME":                     true,
+		"BPF_T_MICROTIME_FAST":                true,
+		"BPF_T_MICROTIME_MONOTONIC":           true,
+		"BPF_T_MICROTIME_MONOTONIC_FAST":      true,
+		"BPF_T_MONOTONIC":                     true,
+		"BPF_T_MONOTONIC_FAST":                true,
+		"BPF_T_NANOTIME":                      true,
+		"BPF_T_NANOTIME_FAST":                 true,
+		"BPF_T_NANOTIME_MONOTONIC":            true,
+		"BPF_T_NANOTIME_MONOTONIC_FAST":       true,
+		"BPF_T_NONE":                          true,
+		"BPF_T_NORMAL":                        true,
+		"BPF_W":                               true,
+		"BPF_X":                               true,
+		"BRKINT":                              true,
+		"Bind":                                true,
+		"BindToDevice":                        true,
+		"BpfBuflen":                           true,
+		"BpfDatalink":                         true,
+		"BpfHdr":                              true,
+		"BpfHeadercmpl":                       true,
+		"BpfInsn":                             true,
+		"BpfInterface":                        true,
+		"BpfJump":                             true,
+		"BpfProgram":                          true,
+		"BpfStat":                             true,
+		"BpfStats":                            true,
+		"BpfStmt":                             true,
+		"BpfTimeout":                          true,
+		"BpfTimeval":                          true,
+		"BpfVersion":                          true,
+		"BpfZbuf":                             true,
+		"BpfZbufHeader":                       true,
+		"ByHandleFileInformation":             true,
+		"BytePtrFromString":                   true,
+		"ByteSliceFromString":                 true,
+		"CCR0_FLUSH":                          true,
+		"CERT_CHAIN_POLICY_AUTHENTICODE":      true,
+		"CERT_CHAIN_POLICY_AUTHENTICODE_TS":   true,
+		"CERT_CHAIN_POLICY_BASE":              true,
+		"CERT_CHAIN_POLICY_BASIC_CONSTRAINTS": true,
+		"CERT_CHAIN_POLICY_EV":                true,
+		"CERT_CHAIN_POLICY_MICROSOFT_ROOT":    true,
+		"CERT_CHAIN_POLICY_NT_AUTH":           true,
+		"CERT_CHAIN_POLICY_SSL":               true,
+		"CERT_E_CN_NO_MATCH":                  true,
+		"CERT_E_EXPIRED":                      true,
+		"CERT_E_PURPOSE":                      true,
+		"CERT_E_ROLE":                         true,
+		"CERT_E_UNTRUSTEDROOT":                true,
+		"CERT_STORE_ADD_ALWAYS":               true,
+		"CERT_STORE_DEFER_CLOSE_UNTIL_LAST_FREE_FLAG":  true,
+		"CERT_STORE_PROV_MEMORY":                       true,
+		"CERT_TRUST_HAS_EXCLUDED_NAME_CONSTRAINT":      true,
+		"CERT_TRUST_HAS_NOT_DEFINED_NAME_CONSTRAINT":   true,
+		"CERT_TRUST_HAS_NOT_PERMITTED_NAME_CONSTRAINT": true,
+		"CERT_TRUST_HAS_NOT_SUPPORTED_CRITICAL_EXT":    true,
+		"CERT_TRUST_HAS_NOT_SUPPORTED_NAME_CONSTRAINT": true,
+		"CERT_TRUST_INVALID_BASIC_CONSTRAINTS":         true,
+		"CERT_TRUST_INVALID_EXTENSION":                 true,
+		"CERT_TRUST_INVALID_NAME_CONSTRAINTS":          true,
+		"CERT_TRUST_INVALID_POLICY_CONSTRAINTS":        true,
+		"CERT_TRUST_IS_CYCLIC":                         true,
+		"CERT_TRUST_IS_EXPLICIT_DISTRUST":              true,
+		"CERT_TRUST_IS_NOT_SIGNATURE_VALID":            true,
+		"CERT_TRUST_IS_NOT_TIME_VALID":                 true,
+		"CERT_TRUST_IS_NOT_VALID_FOR_USAGE":            true,
+		"CERT_TRUST_IS_OFFLINE_REVOCATION":             true,
+		"CERT_TRUST_IS_REVOKED":                        true,
+		"CERT_TRUST_IS_UNTRUSTED_ROOT":                 true,
+		"CERT_TRUST_NO_ERROR":                          true,
+		"CERT_TRUST_NO_ISSUANCE_CHAIN_POLICY":          true,
+		"CERT_TRUST_REVOCATION_STATUS_UNKNOWN":         true,
+		"CFLUSH":                                       true,
+		"CLOCAL":                                       true,
+		"CLONE_CHILD_CLEARTID":                         true,
+		"CLONE_CHILD_SETTID":                           true,
+		"CLONE_CSIGNAL":                                true,
+		"CLONE_DETACHED":                               true,
+		"CLONE_FILES":                                  true,
+		"CLONE_FS":                                     true,
+		"CLONE_IO":                                     true,
+		"CLONE_NEWIPC":                                 true,
+		"CLONE_NEWNET":                                 true,
+		"CLONE_NEWNS":                                  true,
+		"CLONE_NEWPID":                                 true,
+		"CLONE_NEWUSER":                                true,
+		"CLONE_NEWUTS":                                 true,
+		"CLONE_PARENT":                                 true,
+		"CLONE_PARENT_SETTID":                          true,
+		"CLONE_PID":                                    true,
+		"CLONE_PTRACE":                                 true,
+		"CLONE_SETTLS":                                 true,
+		"CLONE_SIGHAND":                                true,
+		"CLONE_SYSVSEM":                                true,
+		"CLONE_THREAD":                                 true,
+		"CLONE_UNTRACED":                               true,
+		"CLONE_VFORK":                                  true,
+		"CLONE_VM":                                     true,
+		"CPUID_CFLUSH":                                 true,
+		"CREAD":                                        true,
+		"CREATE_ALWAYS":                                true,
+		"CREATE_NEW":                                   true,
+		"CREATE_NEW_PROCESS_GROUP":                     true,
+		"CREATE_UNICODE_ENVIRONMENT":                   true,
+		"CRYPT_DEFAULT_CONTAINER_OPTIONAL":             true,
+		"CRYPT_DELETEKEYSET":                           true,
+		"CRYPT_MACHINE_KEYSET":                         true,
+		"CRYPT_NEWKEYSET":                              true,
+		"CRYPT_SILENT":                                 true,
+		"CRYPT_VERIFYCONTEXT":                          true,
+		"CS5":                                          true,
+		"CS6":                                          true,
+		"CS7":                                          true,
+		"CS8":                                          true,
+		"CSIZE":                                        true,
+		"CSTART":                                       true,
+		"CSTATUS":                                      true,
+		"CSTOP":                                        true,
+		"CSTOPB":                                       true,
+		"CSUSP":                                        true,
+		"CTL_MAXNAME":                                  true,
+		"CTL_NET":                                      true,
+		"CTL_QUERY":                                    true,
+		"CTRL_BREAK_EVENT":                             true,
+		"CTRL_C_EVENT":                                 true,
+		"CancelIo":                                     true,
+		"CancelIoEx":                                   true,
+		"CertAddCertificateContextToStore":             true,
+		"CertChainContext":                             true,
+		"CertChainElement":                             true,
+		"CertChainPara":                                true,
+		"CertChainPolicyPara":                          true,
+		"CertChainPolicyStatus":                        true,
+		"CertCloseStore":                               true,
+		"CertContext":                                  true,
+		"CertCreateCertificateContext":                 true,
+		"CertEnhKeyUsage":                              true,
+		"CertEnumCertificatesInStore":                  true,
+		"CertFreeCertificateChain":                     true,
+		"CertFreeCertificateContext":                   true,
+		"CertGetCertificateChain":                      true,
+		"CertInfo":                                     true,
+		"CertOpenStore":                                true,
+		"CertOpenSystemStore":                          true,
+		"CertRevocationCrlInfo":                        true,
+		"CertRevocationInfo":                           true,
+		"CertSimpleChain":                              true,
+		"CertTrustListInfo":                            true,
+		"CertTrustStatus":                              true,
+		"CertUsageMatch":                               true,
+		"CertVerifyCertificateChainPolicy":             true,
+		"Chdir":                                        true,
+		"CheckBpfVersion":                              true,
+		"Chflags":                                      true,
+		"Chmod":                                        true,
+		"Chown":                                        true,
+		"Chroot":                                       true,
+		"Clearenv":                                     true,
+		"Close":                                        true,
+		"CloseHandle":                                  true,
+		"CloseOnExec":                                  true,
+		"Closesocket":                                  true,
+		"CmsgLen":                                      true,
+		"CmsgSpace":                                    true,
+		"Cmsghdr":                                      true,
+		"CommandLineToArgv":                            true,
+		"ComputerName":                                 true,
+		"Conn":                                         true,
+		"Connect":                                      true,
+		"ConnectEx":                                    true,
+		"ConvertSidToStringSid":                        true,
+		"ConvertStringSidToSid":                        true,
+		"CopySid":                                      true,
+		"Creat":                                        true,
+		"CreateDirectory":                              true,
+		"CreateFile":                                   true,
+		"CreateFileMapping":                            true,
+		"CreateHardLink":                               true,
+		"CreateIoCompletionPort":                       true,
+		"CreatePipe":                                   true,
+		"CreateProcess":                                true,
+		"CreateProcessAsUser":                          true,
+		"CreateSymbolicLink":                           true,
+		"CreateToolhelp32Snapshot":                     true,
+		"Credential":                                   true,
+		"CryptAcquireContext":                          true,
+		"CryptGenRandom":                               true,
+		"CryptReleaseContext":                          true,
+		"DIOCBSFLUSH":                                  true,
+		"DIOCOSFPFLUSH":                                true,
+		"DLL":                                          true,
+		"DLLError":                                     true,
+		"DLT_A429":                                     true,
+		"DLT_A653_ICM":                                 true,
+		"DLT_AIRONET_HEADER":                           true,
+		"DLT_AOS":                                      true,
+		"DLT_APPLE_IP_OVER_IEEE1394":                   true,
+		"DLT_ARCNET":                                   true,
+		"DLT_ARCNET_LINUX":                             true,
+		"DLT_ATM_CLIP":                                 true,
+		"DLT_ATM_RFC1483":                              true,
+		"DLT_AURORA":                                   true,
+		"DLT_AX25":                                     true,
+		"DLT_AX25_KISS":                                true,
+		"DLT_BACNET_MS_TP":                             true,
+		"DLT_BLUETOOTH_HCI_H4":                         true,
+		"DLT_BLUETOOTH_HCI_H4_WITH_PHDR":               true,
+		"DLT_CAN20B":                                   true,
+		"DLT_CAN_SOCKETCAN":                            true,
+		"DLT_CHAOS":                                    true,
+		"DLT_CHDLC":                                    true,
+		"DLT_CISCO_IOS":                                true,
+		"DLT_C_HDLC":                                   true,
+		"DLT_C_HDLC_WITH_DIR":                          true,
+		"DLT_DBUS":                                     true,
+		"DLT_DECT":                                     true,
+		"DLT_DOCSIS":                                   true,
+		"DLT_DVB_CI":                                   true,
+		"DLT_ECONET":                                   true,
+		"DLT_EN10MB":                                   true,
+		"DLT_EN3MB":                                    true,
+		"DLT_ENC":                                      true,
+		"DLT_ERF":                                      true,
+		"DLT_ERF_ETH":                                  true,
+		"DLT_ERF_POS":                                  true,
+		"DLT_FC_2":                                     true,
+		"DLT_FC_2_WITH_FRAME_DELIMS":                   true,
+		"DLT_FDDI":                                     true,
+		"DLT_FLEXRAY":                                  true,
+		"DLT_FRELAY":                                   true,
+		"DLT_FRELAY_WITH_DIR":                          true,
+		"DLT_GCOM_SERIAL":                              true,
+		"DLT_GCOM_T1E1":                                true,
+		"DLT_GPF_F":                                    true,
+		"DLT_GPF_T":                                    true,
+		"DLT_GPRS_LLC":                                 true,
+		"DLT_GSMTAP_ABIS":                              true,
+		"DLT_GSMTAP_UM":                                true,
+		"DLT_HDLC":                                     true,
+		"DLT_HHDLC":                                    true,
+		"DLT_HIPPI":                                    true,
+		"DLT_IBM_SN":                                   true,
+		"DLT_IBM_SP":                                   true,
+		"DLT_IEEE802":                                  true,
+		"DLT_IEEE802_11":                               true,
+		"DLT_IEEE802_11_RADIO":                         true,
+		"DLT_IEEE802_11_RADIO_AVS":                     true,
+		"DLT_IEEE802_15_4":                             true,
+		"DLT_IEEE802_15_4_LINUX":                       true,
+		"DLT_IEEE802_15_4_NOFCS":                       true,
+		"DLT_IEEE802_15_4_NONASK_PHY":                  true,
+		"DLT_IEEE802_16_MAC_CPS":                       true,
+		"DLT_IEEE802_16_MAC_CPS_RADIO":                 true,
+		"DLT_IPFILTER":                                 true,
+		"DLT_IPMB":                                     true,
+		"DLT_IPMB_LINUX":                               true,
+		"DLT_IPNET":                                    true,
+		"DLT_IPOIB":                                    true,
+		"DLT_IPV4":                                     true,
+		"DLT_IPV6":                                     true,
+		"DLT_IP_OVER_FC":                               true,
+		"DLT_JUNIPER_ATM1":                             true,
+		"DLT_JUNIPER_ATM2":                             true,
+		"DLT_JUNIPER_ATM_CEMIC":                        true,
+		"DLT_JUNIPER_CHDLC":                            true,
+		"DLT_JUNIPER_ES":                               true,
+		"DLT_JUNIPER_ETHER":                            true,
+		"DLT_JUNIPER_FIBRECHANNEL":                     true,
+		"DLT_JUNIPER_FRELAY":                           true,
+		"DLT_JUNIPER_GGSN":                             true,
+		"DLT_JUNIPER_ISM":                              true,
+		"DLT_JUNIPER_MFR":                              true,
+		"DLT_JUNIPER_MLFR":                             true,
+		"DLT_JUNIPER_MLPPP":                            true,
+		"DLT_JUNIPER_MONITOR":                          true,
+		"DLT_JUNIPER_PIC_PEER":                         true,
+		"DLT_JUNIPER_PPP":                              true,
+		"DLT_JUNIPER_PPPOE":                            true,
+		"DLT_JUNIPER_PPPOE_ATM":                        true,
+		"DLT_JUNIPER_SERVICES":                         true,
+		"DLT_JUNIPER_SRX_E2E":                          true,
+		"DLT_JUNIPER_ST":                               true,
+		"DLT_JUNIPER_VP":                               true,
+		"DLT_JUNIPER_VS":                               true,
+		"DLT_LAPB_WITH_DIR":                            true,
+		"DLT_LAPD":                                     true,
+		"DLT_LIN":                                      true,
+		"DLT_LINUX_EVDEV":                              true,
+		"DLT_LINUX_IRDA":                               true,
+		"DLT_LINUX_LAPD":                               true,
+		"DLT_LINUX_PPP_WITHDIRECTION":                  true,
+		"DLT_LINUX_SLL":                                true,
+		"DLT_LOOP":                                     true,
+		"DLT_LTALK":                                    true,
+		"DLT_MATCHING_MAX":                             true,
+		"DLT_MATCHING_MIN":                             true,
+		"DLT_MFR":                                      true,
+		"DLT_MOST":                                     true,
+		"DLT_MPEG_2_TS":                                true,
+		"DLT_MPLS":                                     true,
+		"DLT_MTP2":                                     true,
+		"DLT_MTP2_WITH_PHDR":                           true,
+		"DLT_MTP3":                                     true,
+		"DLT_MUX27010":                                 true,
+		"DLT_NETANALYZER":                              true,
+		"DLT_NETANALYZER_TRANSPARENT":                  true,
+		"DLT_NFC_LLCP":                                 true,
+		"DLT_NFLOG":                                    true,
+		"DLT_NG40":                                     true,
+		"DLT_NULL":                                     true,
+		"DLT_PCI_EXP":                                  true,
+		"DLT_PFLOG":                                    true,
+		"DLT_PFSYNC":                                   true,
+		"DLT_PPI":                                      true,
+		"DLT_PPP":                                      true,
+		"DLT_PPP_BSDOS":                                true,
+		"DLT_PPP_ETHER":                                true,
+		"DLT_PPP_PPPD":                                 true,
+		"DLT_PPP_SERIAL":                               true,
+		"DLT_PPP_WITH_DIR":                             true,
+		"DLT_PPP_WITH_DIRECTION":                       true,
+		"DLT_PRISM_HEADER":                             true,
+		"DLT_PRONET":                                   true,
+		"DLT_RAIF1":                                    true,
+		"DLT_RAW":                                      true,
+		"DLT_RAWAF_MASK":                               true,
+		"DLT_RIO":                                      true,
+		"DLT_SCCP":                                     true,
+		"DLT_SITA":                                     true,
+		"DLT_SLIP":                                     true,
+		"DLT_SLIP_BSDOS":                               true,
+		"DLT_STANAG_5066_D_PDU":                        true,
+		"DLT_SUNATM":                                   true,
+		"DLT_SYMANTEC_FIREWALL":                        true,
+		"DLT_TZSP":                                     true,
+		"DLT_USB":                                      true,
+		"DLT_USB_LINUX":                                true,
+		"DLT_USB_LINUX_MMAPPED":                        true,
+		"DLT_USER0":                                    true,
+		"DLT_USER1":                                    true,
+		"DLT_USER10":                                   true,
+		"DLT_USER11":                                   true,
+		"DLT_USER12":                                   true,
+		"DLT_USER13":                                   true,
+		"DLT_USER14":                                   true,
+		"DLT_USER15":                                   true,
+		"DLT_USER2":                                    true,
+		"DLT_USER3":                                    true,
+		"DLT_USER4":                                    true,
+		"DLT_USER5":                                    true,
+		"DLT_USER6":                                    true,
+		"DLT_USER7":                                    true,
+		"DLT_USER8":                                    true,
+		"DLT_USER9":                                    true,
+		"DLT_WIHART":                                   true,
+		"DLT_X2E_SERIAL":                               true,
+		"DLT_X2E_XORAYA":                               true,
+		"DNSMXData":                                    true,
+		"DNSPTRData":                                   true,
+		"DNSRecord":                                    true,
+		"DNSSRVData":                                   true,
+		"DNSTXTData":                                   true,
+		"DNS_INFO_NO_RECORDS":                          true,
+		"DNS_TYPE_A":                                   true,
+		"DNS_TYPE_A6":                                  true,
+		"DNS_TYPE_AAAA":                                true,
+		"DNS_TYPE_ADDRS":                               true,
+		"DNS_TYPE_AFSDB":                               true,
+		"DNS_TYPE_ALL":                                 true,
+		"DNS_TYPE_ANY":                                 true,
+		"DNS_TYPE_ATMA":                                true,
+		"DNS_TYPE_AXFR":                                true,
+		"DNS_TYPE_CERT":                                true,
+		"DNS_TYPE_CNAME":                               true,
+		"DNS_TYPE_DHCID":                               true,
+		"DNS_TYPE_DNAME":                               true,
+		"DNS_TYPE_DNSKEY":                              true,
+		"DNS_TYPE_DS":                                  true,
+		"DNS_TYPE_EID":                                 true,
+		"DNS_TYPE_GID":                                 true,
+		"DNS_TYPE_GPOS":                                true,
+		"DNS_TYPE_HINFO":                               true,
+		"DNS_TYPE_ISDN":                                true,
+		"DNS_TYPE_IXFR":                                true,
+		"DNS_TYPE_KEY":                                 true,
+		"DNS_TYPE_KX":                                  true,
+		"DNS_TYPE_LOC":                                 true,
+		"DNS_TYPE_MAILA":                               true,
+		"DNS_TYPE_MAILB":                               true,
+		"DNS_TYPE_MB":                                  true,
+		"DNS_TYPE_MD":                                  true,
+		"DNS_TYPE_MF":                                  true,
+		"DNS_TYPE_MG":                                  true,
+		"DNS_TYPE_MINFO":                               true,
+		"DNS_TYPE_MR":                                  true,
+		"DNS_TYPE_MX":                                  true,
+		"DNS_TYPE_NAPTR":                               true,
+		"DNS_TYPE_NBSTAT":                              true,
+		"DNS_TYPE_NIMLOC":                              true,
+		"DNS_TYPE_NS":                                  true,
+		"DNS_TYPE_NSAP":                                true,
+		"DNS_TYPE_NSAPPTR":                             true,
+		"DNS_TYPE_NSEC":                                true,
+		"DNS_TYPE_NULL":                                true,
+		"DNS_TYPE_NXT":                                 true,
+		"DNS_TYPE_OPT":                                 true,
+		"DNS_TYPE_PTR":                                 true,
+		"DNS_TYPE_PX":                                  true,
+		"DNS_TYPE_RP":                                  true,
+		"DNS_TYPE_RRSIG":                               true,
+		"DNS_TYPE_RT":                                  true,
+		"DNS_TYPE_SIG":                                 true,
+		"DNS_TYPE_SINK":                                true,
+		"DNS_TYPE_SOA":                                 true,
+		"DNS_TYPE_SRV":                                 true,
+		"DNS_TYPE_TEXT":                                true,
+		"DNS_TYPE_TKEY":                                true,
+		"DNS_TYPE_TSIG":                                true,
+		"DNS_TYPE_UID":                                 true,
+		"DNS_TYPE_UINFO":                               true,
+		"DNS_TYPE_UNSPEC":                              true,
+		"DNS_TYPE_WINS":                                true,
+		"DNS_TYPE_WINSR":                               true,
+		"DNS_TYPE_WKS":                                 true,
+		"DNS_TYPE_X25":                                 true,
+		"DT_BLK":                                       true,
+		"DT_CHR":                                       true,
+		"DT_DIR":                                       true,
+		"DT_FIFO":                                      true,
+		"DT_LNK":                                       true,
+		"DT_REG":                                       true,
+		"DT_SOCK":                                      true,
+		"DT_UNKNOWN":                                   true,
+		"DT_WHT":                                       true,
+		"DUPLICATE_CLOSE_SOURCE":                       true,
+		"DUPLICATE_SAME_ACCESS":                        true,
+		"DeleteFile":                                   true,
+		"DetachLsf":                                    true,
+		"DeviceIoControl":                              true,
+		"Dirent":                                       true,
+		"DnsNameCompare":                               true,
+		"DnsQuery":                                     true,
+		"DnsRecordListFree":                            true,
+		"DnsSectionAdditional":                         true,
+		"DnsSectionAnswer":                             true,
+		"DnsSectionAuthority":                          true,
+		"DnsSectionQuestion":                           true,
+		"Dup":                                          true,
+		"Dup2":                                         true,
+		"Dup3":                                         true,
+		"DuplicateHandle":                              true,
+		"E2BIG":                                        true,
+		"EACCES":                                       true,
+		"EADDRINUSE":                                   true,
+		"EADDRNOTAVAIL":                                true,
+		"EADV":                                         true,
+		"EAFNOSUPPORT":                                 true,
+		"EAGAIN":                                       true,
+		"EALREADY":                                     true,
+		"EAUTH":                                        true,
+		"EBADARCH":                                     true,
+		"EBADE":                                        true,
+		"EBADEXEC":                                     true,
+		"EBADF":                                        true,
+		"EBADFD":                                       true,
+		"EBADMACHO":                                    true,
+		"EBADMSG":                                      true,
+		"EBADR":                                        true,
+		"EBADRPC":                                      true,
+		"EBADRQC":                                      true,
+		"EBADSLT":                                      true,
+		"EBFONT":                                       true,
+		"EBUSY":                                        true,
+		"ECANCELED":                                    true,
+		"ECAPMODE":                                     true,
+		"ECHILD":                                       true,
+		"ECHO":                                         true,
+		"ECHOCTL":                                      true,
+		"ECHOE":                                        true,
+		"ECHOK":                                        true,
+		"ECHOKE":                                       true,
+		"ECHONL":                                       true,
+		"ECHOPRT":                                      true,
+		"ECHRNG":                                       true,
+		"ECOMM":                                        true,
+		"ECONNABORTED":                                 true,
+		"ECONNREFUSED":                                 true,
+		"ECONNRESET":                                   true,
+		"EDEADLK":                                      true,
+		"EDEADLOCK":                                    true,
+		"EDESTADDRREQ":                                 true,
+		"EDEVERR":                                      true,
+		"EDOM":                                         true,
+		"EDOOFUS":                                      true,
+		"EDOTDOT":                                      true,
+		"EDQUOT":                                       true,
+		"EEXIST":                                       true,
+		"EFAULT":                                       true,
+		"EFBIG":                                        true,
+		"EFER_LMA":                                     true,
+		"EFER_LME":                                     true,
+		"EFER_NXE":                                     true,
+		"EFER_SCE":                                     true,
+		"EFTYPE":                                       true,
+		"EHOSTDOWN":                                    true,
+		"EHOSTUNREACH":                                 true,
+		"EHWPOISON":                                    true,
+		"EIDRM":                                        true,
+		"EILSEQ":                                       true,
+		"EINPROGRESS":                                  true,
+		"EINTR":                                        true,
+		"EINVAL":                                       true,
+		"EIO":                                          true,
+		"EIPSEC":                                       true,
+		"EISCONN":                                      true,
+		"EISDIR":                                       true,
+		"EISNAM":                                       true,
+		"EKEYEXPIRED":                                  true,
+		"EKEYREJECTED":                                 true,
+		"EKEYREVOKED":                                  true,
+		"EL2HLT":                                       true,
+		"EL2NSYNC":                                     true,
+		"EL3HLT":                                       true,
+		"EL3RST":                                       true,
+		"ELAST":                                        true,
+		"ELF_NGREG":                                    true,
+		"ELF_PRARGSZ":                                  true,
+		"ELIBACC":                                      true,
+		"ELIBBAD":                                      true,
+		"ELIBEXEC":                                     true,
+		"ELIBMAX":                                      true,
+		"ELIBSCN":                                      true,
+		"ELNRNG":                                       true,
+		"ELOOP":                                        true,
+		"EMEDIUMTYPE":                                  true,
+		"EMFILE":                                       true,
+		"EMLINK":                                       true,
+		"EMSGSIZE":                                     true,
+		"EMT_TAGOVF":                                   true,
+		"EMULTIHOP":                                    true,
+		"EMUL_ENABLED":                                 true,
+		"EMUL_LINUX":                                   true,
+		"EMUL_LINUX32":                                 true,
+		"EMUL_MAXID":                                   true,
+		"EMUL_NATIVE":                                  true,
+		"ENAMETOOLONG":                                 true,
+		"ENAVAIL":                                      true,
+		"ENDRUNDISC":                                   true,
+		"ENEEDAUTH":                                    true,
+		"ENETDOWN":                                     true,
+		"ENETRESET":                                    true,
+		"ENETUNREACH":                                  true,
+		"ENFILE":                                       true,
+		"ENOANO":                                       true,
+		"ENOATTR":                                      true,
+		"ENOBUFS":                                      true,
+		"ENOCSI":                                       true,
+		"ENODATA":                                      true,
+		"ENODEV":                                       true,
+		"ENOENT":                                       true,
+		"ENOEXEC":                                      true,
+		"ENOKEY":                                       true,
+		"ENOLCK":                                       true,
+		"ENOLINK":                                      true,
+		"ENOMEDIUM":                                    true,
+		"ENOMEM":                                       true,
+		"ENOMSG":                                       true,
+		"ENONET":                                       true,
+		"ENOPKG":                                       true,
+		"ENOPOLICY":                                    true,
+		"ENOPROTOOPT":                                  true,
+		"ENOSPC":                                       true,
+		"ENOSR":                                        true,
+		"ENOSTR":                                       true,
+		"ENOSYS":                                       true,
+		"ENOTBLK":                                      true,
+		"ENOTCAPABLE":                                  true,
+		"ENOTCONN":                                     true,
+		"ENOTDIR":                                      true,
+		"ENOTEMPTY":                                    true,
+		"ENOTNAM":                                      true,
+		"ENOTRECOVERABLE":                              true,
+		"ENOTSOCK":                                     true,
+		"ENOTSUP":                                      true,
+		"ENOTTY":                                       true,
+		"ENOTUNIQ":                                     true,
+		"ENXIO":                                        true,
+		"EN_SW_CTL_INF":                                true,
+		"EN_SW_CTL_PREC":                               true,
+		"EN_SW_CTL_ROUND":                              true,
+		"EN_SW_DATACHAIN":                              true,
+		"EN_SW_DENORM":                                 true,
+		"EN_SW_INVOP":                                  true,
+		"EN_SW_OVERFLOW":                               true,
+		"EN_SW_PRECLOSS":                               true,
+		"EN_SW_UNDERFLOW":                              true,
+		"EN_SW_ZERODIV":                                true,
+		"EOPNOTSUPP":                                   true,
+		"EOVERFLOW":                                    true,
+		"EOWNERDEAD":                                   true,
+		"EPERM":                                        true,
+		"EPFNOSUPPORT":                                 true,
+		"EPIPE":                                        true,
+		"EPOLLERR":                                     true,
+		"EPOLLET":                                      true,
+		"EPOLLHUP":                                     true,
+		"EPOLLIN":                                      true,
+		"EPOLLMSG":                                     true,
+		"EPOLLONESHOT":                                 true,
+		"EPOLLOUT":                                     true,
+		"EPOLLPRI":                                     true,
+		"EPOLLRDBAND":                                  true,
+		"EPOLLRDHUP":                                   true,
+		"EPOLLRDNORM":                                  true,
+		"EPOLLWRBAND":                                  true,
+		"EPOLLWRNORM":                                  true,
+		"EPOLL_CLOEXEC":                                true,
+		"EPOLL_CTL_ADD":                                true,
+		"EPOLL_CTL_DEL":                                true,
+		"EPOLL_CTL_MOD":                                true,
+		"EPOLL_NONBLOCK":                               true,
+		"EPROCLIM":                                     true,
+		"EPROCUNAVAIL":                                 true,
+		"EPROGMISMATCH":                                true,
+		"EPROGUNAVAIL":                                 true,
+		"EPROTO":                                       true,
+		"EPROTONOSUPPORT":                              true,
+		"EPROTOTYPE":                                   true,
+		"EPWROFF":                                      true,
+		"ERANGE":                                       true,
+		"EREMCHG":                                      true,
+		"EREMOTE":                                      true,
+		"EREMOTEIO":                                    true,
+		"ERESTART":                                     true,
+		"ERFKILL":                                      true,
+		"EROFS":                                        true,
+		"ERPCMISMATCH":                                 true,
+		"ERROR_ACCESS_DENIED":                          true,
+		"ERROR_ALREADY_EXISTS":                         true,
+		"ERROR_BROKEN_PIPE":                            true,
+		"ERROR_BUFFER_OVERFLOW":                        true,
+		"ERROR_DIR_NOT_EMPTY":                          true,
+		"ERROR_ENVVAR_NOT_FOUND":                       true,
+		"ERROR_FILE_EXISTS":                            true,
+		"ERROR_FILE_NOT_FOUND":                         true,
+		"ERROR_HANDLE_EOF":                             true,
+		"ERROR_INSUFFICIENT_BUFFER":                    true,
+		"ERROR_IO_PENDING":                             true,
+		"ERROR_MOD_NOT_FOUND":                          true,
+		"ERROR_MORE_DATA":                              true,
+		"ERROR_NETNAME_DELETED":                        true,
+		"ERROR_NOT_FOUND":                              true,
+		"ERROR_NO_MORE_FILES":                          true,
+		"ERROR_OPERATION_ABORTED":                      true,
+		"ERROR_PATH_NOT_FOUND":                         true,
+		"ERROR_PRIVILEGE_NOT_HELD":                     true,
+		"ERROR_PROC_NOT_FOUND":                         true,
+		"ESHLIBVERS":                                   true,
+		"ESHUTDOWN":                                    true,
+		"ESOCKTNOSUPPORT":                              true,
+		"ESPIPE":                                       true,
+		"ESRCH":                                        true,
+		"ESRMNT":                                       true,
+		"ESTALE":                                       true,
+		"ESTRPIPE":                                     true,
+		"ETHERCAP_JUMBO_MTU":                           true,
+		"ETHERCAP_VLAN_HWTAGGING":                      true,
+		"ETHERCAP_VLAN_MTU":                            true,
+		"ETHERMIN":                                     true,
+		"ETHERMTU":                                     true,
+		"ETHERMTU_JUMBO":                               true,
+		"ETHERTYPE_8023":                               true,
+		"ETHERTYPE_AARP":                               true,
+		"ETHERTYPE_ACCTON":                             true,
+		"ETHERTYPE_AEONIC":                             true,
+		"ETHERTYPE_ALPHA":                              true,
+		"ETHERTYPE_AMBER":                              true,
+		"ETHERTYPE_AMOEBA":                             true,
+		"ETHERTYPE_AOE":                                true,
+		"ETHERTYPE_APOLLO":                             true,
+		"ETHERTYPE_APOLLODOMAIN":                       true,
+		"ETHERTYPE_APPLETALK":                          true,
+		"ETHERTYPE_APPLITEK":                           true,
+		"ETHERTYPE_ARGONAUT":                           true,
+		"ETHERTYPE_ARP":                                true,
+		"ETHERTYPE_AT":                                 true,
+		"ETHERTYPE_ATALK":                              true,
+		"ETHERTYPE_ATOMIC":                             true,
+		"ETHERTYPE_ATT":                                true,
+		"ETHERTYPE_ATTSTANFORD":                        true,
+		"ETHERTYPE_AUTOPHON":                           true,
+		"ETHERTYPE_AXIS":                               true,
+		"ETHERTYPE_BCLOOP":                             true,
+		"ETHERTYPE_BOFL":                               true,
+		"ETHERTYPE_CABLETRON":                          true,
+		"ETHERTYPE_CHAOS":                              true,
+		"ETHERTYPE_COMDESIGN":                          true,
+		"ETHERTYPE_COMPUGRAPHIC":                       true,
+		"ETHERTYPE_COUNTERPOINT":                       true,
+		"ETHERTYPE_CRONUS":                             true,
+		"ETHERTYPE_CRONUSVLN":                          true,
+		"ETHERTYPE_DCA":                                true,
+		"ETHERTYPE_DDE":                                true,
+		"ETHERTYPE_DEBNI":                              true,
+		"ETHERTYPE_DECAM":                              true,
+		"ETHERTYPE_DECCUST":                            true,
+		"ETHERTYPE_DECDIAG":                            true,
+		"ETHERTYPE_DECDNS":                             true,
+		"ETHERTYPE_DECDTS":                             true,
+		"ETHERTYPE_DECEXPER":                           true,
+		"ETHERTYPE_DECLAST":                            true,
+		"ETHERTYPE_DECLTM":                             true,
+		"ETHERTYPE_DECMUMPS":                           true,
+		"ETHERTYPE_DECNETBIOS":                         true,
+		"ETHERTYPE_DELTACON":                           true,
+		"ETHERTYPE_DIDDLE":                             true,
+		"ETHERTYPE_DLOG1":                              true,
+		"ETHERTYPE_DLOG2":                              true,
+		"ETHERTYPE_DN":                                 true,
+		"ETHERTYPE_DOGFIGHT":                           true,
+		"ETHERTYPE_DSMD":                               true,
+		"ETHERTYPE_ECMA":                               true,
+		"ETHERTYPE_ENCRYPT":                            true,
+		"ETHERTYPE_ES":                                 true,
+		"ETHERTYPE_EXCELAN":                            true,
+		"ETHERTYPE_EXPERDATA":                          true,
+		"ETHERTYPE_FLIP":                               true,
+		"ETHERTYPE_FLOWCONTROL":                        true,
+		"ETHERTYPE_FRARP":                              true,
+		"ETHERTYPE_GENDYN":                             true,
+		"ETHERTYPE_HAYES":                              true,
+		"ETHERTYPE_HIPPI_FP":                           true,
+		"ETHERTYPE_HITACHI":                            true,
+		"ETHERTYPE_HP":                                 true,
+		"ETHERTYPE_IEEEPUP":                            true,
+		"ETHERTYPE_IEEEPUPAT":                          true,
+		"ETHERTYPE_IMLBL":                              true,
+		"ETHERTYPE_IMLBLDIAG":                          true,
+		"ETHERTYPE_IP":                                 true,
+		"ETHERTYPE_IPAS":                               true,
+		"ETHERTYPE_IPV6":                               true,
+		"ETHERTYPE_IPX":                                true,
+		"ETHERTYPE_IPXNEW":                             true,
+		"ETHERTYPE_KALPANA":                            true,
+		"ETHERTYPE_LANBRIDGE":                          true,
+		"ETHERTYPE_LANPROBE":                           true,
+		"ETHERTYPE_LAT":                                true,
+		"ETHERTYPE_LBACK":                              true,
+		"ETHERTYPE_LITTLE":                             true,
+		"ETHERTYPE_LLDP":                               true,
+		"ETHERTYPE_LOGICRAFT":                          true,
+		"ETHERTYPE_LOOPBACK":                           true,
+		"ETHERTYPE_MATRA":                              true,
+		"ETHERTYPE_MAX":                                true,
+		"ETHERTYPE_MERIT":                              true,
+		"ETHERTYPE_MICP":                               true,
+		"ETHERTYPE_MOPDL":                              true,
+		"ETHERTYPE_MOPRC":                              true,
+		"ETHERTYPE_MOTOROLA":                           true,
+		"ETHERTYPE_MPLS":                               true,
+		"ETHERTYPE_MPLS_MCAST":                         true,
+		"ETHERTYPE_MUMPS":                              true,
+		"ETHERTYPE_NBPCC":                              true,
+		"ETHERTYPE_NBPCLAIM":                           true,
+		"ETHERTYPE_NBPCLREQ":                           true,
+		"ETHERTYPE_NBPCLRSP":                           true,
+		"ETHERTYPE_NBPCREQ":                            true,
+		"ETHERTYPE_NBPCRSP":                            true,
+		"ETHERTYPE_NBPDG":                              true,
+		"ETHERTYPE_NBPDGB":                             true,
+		"ETHERTYPE_NBPDLTE":                            true,
+		"ETHERTYPE_NBPRAR":                             true,
+		"ETHERTYPE_NBPRAS":                             true,
+		"ETHERTYPE_NBPRST":                             true,
+		"ETHERTYPE_NBPSCD":                             true,
+		"ETHERTYPE_NBPVCD":                             true,
+		"ETHERTYPE_NBS":                                true,
+		"ETHERTYPE_NCD":                                true,
+		"ETHERTYPE_NESTAR":                             true,
+		"ETHERTYPE_NETBEUI":                            true,
+		"ETHERTYPE_NOVELL":                             true,
+		"ETHERTYPE_NS":                                 true,
+		"ETHERTYPE_NSAT":                               true,
+		"ETHERTYPE_NSCOMPAT":                           true,
+		"ETHERTYPE_NTRAILER":                           true,
+		"ETHERTYPE_OS9":                                true,
+		"ETHERTYPE_OS9NET":                             true,
+		"ETHERTYPE_PACER":                              true,
+		"ETHERTYPE_PAE":                                true,
+		"ETHERTYPE_PCS":                                true,
+		"ETHERTYPE_PLANNING":                           true,
+		"ETHERTYPE_PPP":                                true,
+		"ETHERTYPE_PPPOE":                              true,
+		"ETHERTYPE_PPPOEDISC":                          true,
+		"ETHERTYPE_PRIMENTS":                           true,
+		"ETHERTYPE_PUP":                                true,
+		"ETHERTYPE_PUPAT":                              true,
+		"ETHERTYPE_QINQ":                               true,
+		"ETHERTYPE_RACAL":                              true,
+		"ETHERTYPE_RATIONAL":                           true,
+		"ETHERTYPE_RAWFR":                              true,
+		"ETHERTYPE_RCL":                                true,
+		"ETHERTYPE_RDP":                                true,
+		"ETHERTYPE_RETIX":                              true,
+		"ETHERTYPE_REVARP":                             true,
+		"ETHERTYPE_SCA":                                true,
+		"ETHERTYPE_SECTRA":                             true,
+		"ETHERTYPE_SECUREDATA":                         true,
+		"ETHERTYPE_SGITW":                              true,
+		"ETHERTYPE_SG_BOUNCE":                          true,
+		"ETHERTYPE_SG_DIAG":                            true,
+		"ETHERTYPE_SG_NETGAMES":                        true,
+		"ETHERTYPE_SG_RESV":                            true,
+		"ETHERTYPE_SIMNET":                             true,
+		"ETHERTYPE_SLOW":                               true,
+		"ETHERTYPE_SLOWPROTOCOLS":                      true,
+		"ETHERTYPE_SNA":                                true,
+		"ETHERTYPE_SNMP":                               true,
+		"ETHERTYPE_SONIX":                              true,
+		"ETHERTYPE_SPIDER":                             true,
+		"ETHERTYPE_SPRITE":                             true,
+		"ETHERTYPE_STP":                                true,
+		"ETHERTYPE_TALARIS":                            true,
+		"ETHERTYPE_TALARISMC":                          true,
+		"ETHERTYPE_TCPCOMP":                            true,
+		"ETHERTYPE_TCPSM":                              true,
+		"ETHERTYPE_TEC":                                true,
+		"ETHERTYPE_TIGAN":                              true,
+		"ETHERTYPE_TRAIL":                              true,
+		"ETHERTYPE_TRANSETHER":                         true,
+		"ETHERTYPE_TYMSHARE":                           true,
+		"ETHERTYPE_UBBST":                              true,
+		"ETHERTYPE_UBDEBUG":                            true,
+		"ETHERTYPE_UBDIAGLOOP":                         true,
+		"ETHERTYPE_UBDL":                               true,
+		"ETHERTYPE_UBNIU":                              true,
+		"ETHERTYPE_UBNMC":                              true,
+		"ETHERTYPE_VALID":                              true,
+		"ETHERTYPE_VARIAN":                             true,
+		"ETHERTYPE_VAXELN":                             true,
+		"ETHERTYPE_VEECO":                              true,
+		"ETHERTYPE_VEXP":                               true,
+		"ETHERTYPE_VGLAB":                              true,
+		"ETHERTYPE_VINES":                              true,
+		"ETHERTYPE_VINESECHO":                          true,
+		"ETHERTYPE_VINESLOOP":                          true,
+		"ETHERTYPE_VITAL":                              true,
+		"ETHERTYPE_VLAN":                               true,
+		"ETHERTYPE_VLTLMAN":                            true,
+		"ETHERTYPE_VPROD":                              true,
+		"ETHERTYPE_VURESERVED":                         true,
+		"ETHERTYPE_WATERLOO":                           true,
+		"ETHERTYPE_WELLFLEET":                          true,
+		"ETHERTYPE_X25":                                true,
+		"ETHERTYPE_X75":                                true,
+		"ETHERTYPE_XNSSM":                              true,
+		"ETHERTYPE_XTP":                                true,
+		"ETHER_ADDR_LEN":                               true,
+		"ETHER_ALIGN":                                  true,
+		"ETHER_CRC_LEN":                                true,
+		"ETHER_CRC_POLY_BE":                            true,
+		"ETHER_CRC_POLY_LE":                            true,
+		"ETHER_HDR_LEN":                                true,
+		"ETHER_MAX_DIX_LEN":                            true,
+		"ETHER_MAX_LEN":                                true,
+		"ETHER_MAX_LEN_JUMBO":                          true,
+		"ETHER_MIN_LEN":                                true,
+		"ETHER_PPPOE_ENCAP_LEN":                        true,
+		"ETHER_TYPE_LEN":                               true,
+		"ETHER_VLAN_ENCAP_LEN":                         true,
+		"ETH_P_1588":                                   true,
+		"ETH_P_8021Q":                                  true,
+		"ETH_P_802_2":                                  true,
+		"ETH_P_802_3":                                  true,
+		"ETH_P_AARP":                                   true,
+		"ETH_P_ALL":                                    true,
+		"ETH_P_AOE":                                    true,
+		"ETH_P_ARCNET":                                 true,
+		"ETH_P_ARP":                                    true,
+		"ETH_P_ATALK":                                  true,
+		"ETH_P_ATMFATE":                                true,
+		"ETH_P_ATMMPOA":                                true,
+		"ETH_P_AX25":                                   true,
+		"ETH_P_BPQ":                                    true,
+		"ETH_P_CAIF":                                   true,
+		"ETH_P_CAN":                                    true,
+		"ETH_P_CONTROL":                                true,
+		"ETH_P_CUST":                                   true,
+		"ETH_P_DDCMP":                                  true,
+		"ETH_P_DEC":                                    true,
+		"ETH_P_DIAG":                                   true,
+		"ETH_P_DNA_DL":                                 true,
+		"ETH_P_DNA_RC":                                 true,
+		"ETH_P_DNA_RT":                                 true,
+		"ETH_P_DSA":                                    true,
+		"ETH_P_ECONET":                                 true,
+		"ETH_P_EDSA":                                   true,
+		"ETH_P_FCOE":                                   true,
+		"ETH_P_FIP":                                    true,
+		"ETH_P_HDLC":                                   true,
+		"ETH_P_IEEE802154":                             true,
+		"ETH_P_IEEEPUP":                                true,
+		"ETH_P_IEEEPUPAT":                              true,
+		"ETH_P_IP":                                     true,
+		"ETH_P_IPV6":                                   true,
+		"ETH_P_IPX":                                    true,
+		"ETH_P_IRDA":                                   true,
+		"ETH_P_LAT":                                    true,
+		"ETH_P_LINK_CTL":                               true,
+		"ETH_P_LOCALTALK":                              true,
+		"ETH_P_LOOP":                                   true,
+		"ETH_P_MOBITEX":                                true,
+		"ETH_P_MPLS_MC":                                true,
+		"ETH_P_MPLS_UC":                                true,
+		"ETH_P_PAE":                                    true,
+		"ETH_P_PAUSE":                                  true,
+		"ETH_P_PHONET":                                 true,
+		"ETH_P_PPPTALK":                                true,
+		"ETH_P_PPP_DISC":                               true,
+		"ETH_P_PPP_MP":                                 true,
+		"ETH_P_PPP_SES":                                true,
+		"ETH_P_PUP":                                    true,
+		"ETH_P_PUPAT":                                  true,
+		"ETH_P_RARP":                                   true,
+		"ETH_P_SCA":                                    true,
+		"ETH_P_SLOW":                                   true,
+		"ETH_P_SNAP":                                   true,
+		"ETH_P_TEB":                                    true,
+		"ETH_P_TIPC":                                   true,
+		"ETH_P_TRAILER":                                true,
+		"ETH_P_TR_802_2":                               true,
+		"ETH_P_WAN_PPP":                                true,
+		"ETH_P_WCCP":                                   true,
+		"ETH_P_X25":                                    true,
+		"ETIME":                                        true,
+		"ETIMEDOUT":                                    true,
+		"ETOOMANYREFS":                                 true,
+		"ETXTBSY":                                      true,
+		"EUCLEAN":                                      true,
+		"EUNATCH":                                      true,
+		"EUSERS":                                       true,
+		"EVFILT_AIO":                                   true,
+		"EVFILT_FS":                                    true,
+		"EVFILT_LIO":                                   true,
+		"EVFILT_MACHPORT":                              true,
+		"EVFILT_PROC":                                  true,
+		"EVFILT_READ":                                  true,
+		"EVFILT_SIGNAL":                                true,
+		"EVFILT_SYSCOUNT":                              true,
+		"EVFILT_THREADMARKER":                          true,
+		"EVFILT_TIMER":                                 true,
+		"EVFILT_USER":                                  true,
+		"EVFILT_VM":                                    true,
+		"EVFILT_VNODE":                                 true,
+		"EVFILT_WRITE":                                 true,
+		"EV_ADD":                                       true,
+		"EV_CLEAR":                                     true,
+		"EV_DELETE":                                    true,
+		"EV_DISABLE":                                   true,
+		"EV_DISPATCH":                                  true,
+		"EV_DROP":                                      true,
+		"EV_ENABLE":                                    true,
+		"EV_EOF":                                       true,
+		"EV_ERROR":                                     true,
+		"EV_FLAG0":                                     true,
+		"EV_FLAG1":                                     true,
+		"EV_ONESHOT":                                   true,
+		"EV_OOBAND":                                    true,
+		"EV_POLL":                                      true,
+		"EV_RECEIPT":                                   true,
+		"EV_SYSFLAGS":                                  true,
+		"EWINDOWS":                                     true,
+		"EWOULDBLOCK":                                  true,
+		"EXDEV":                                        true,
+		"EXFULL":                                       true,
+		"EXTA":                                         true,
+		"EXTB":                                         true,
+		"EXTPROC":                                      true,
+		"Environ":                                      true,
+		"EpollCreate":                                  true,
+		"EpollCreate1":                                 true,
+		"EpollCtl":                                     true,
+		"EpollEvent":                                   true,
+		"EpollWait":                                    true,
+		"Errno":                                        true,
+		"EscapeArg":                                    true,
+		"Exchangedata":                                 true,
+		"Exec":                                         true,
+		"Exit":                                         true,
+		"ExitProcess":                                  true,
+		"FD_CLOEXEC":                                   true,
+		"FD_SETSIZE":                                   true,
+		"FILE_ACTION_ADDED":                            true,
+		"FILE_ACTION_MODIFIED":                         true,
+		"FILE_ACTION_REMOVED":                          true,
+		"FILE_ACTION_RENAMED_NEW_NAME":                 true,
+		"FILE_ACTION_RENAMED_OLD_NAME":                 true,
+		"FILE_APPEND_DATA":                             true,
+		"FILE_ATTRIBUTE_ARCHIVE":                       true,
+		"FILE_ATTRIBUTE_DIRECTORY":                     true,
+		"FILE_ATTRIBUTE_HIDDEN":                        true,
+		"FILE_ATTRIBUTE_NORMAL":                        true,
+		"FILE_ATTRIBUTE_READONLY":                      true,
+		"FILE_ATTRIBUTE_REPARSE_POINT":                 true,
+		"FILE_ATTRIBUTE_SYSTEM":                        true,
+		"FILE_BEGIN":                                   true,
+		"FILE_CURRENT":                                 true,
+		"FILE_END":                                     true,
+		"FILE_FLAG_BACKUP_SEMANTICS":                   true,
+		"FILE_FLAG_OPEN_REPARSE_POINT":                 true,
+		"FILE_FLAG_OVERLAPPED":                         true,
+		"FILE_LIST_DIRECTORY":                          true,
+		"FILE_MAP_COPY":                                true,
+		"FILE_MAP_EXECUTE":                             true,
+		"FILE_MAP_READ":                                true,
+		"FILE_MAP_WRITE":                               true,
+		"FILE_NOTIFY_CHANGE_ATTRIBUTES":                true,
+		"FILE_NOTIFY_CHANGE_CREATION":                  true,
+		"FILE_NOTIFY_CHANGE_DIR_NAME":                  true,
+		"FILE_NOTIFY_CHANGE_FILE_NAME":                 true,
+		"FILE_NOTIFY_CHANGE_LAST_ACCESS":               true,
+		"FILE_NOTIFY_CHANGE_LAST_WRITE":                true,
+		"FILE_NOTIFY_CHANGE_SIZE":                      true,
+		"FILE_SHARE_DELETE":                            true,
+		"FILE_SHARE_READ":                              true,
+		"FILE_SHARE_WRITE":                             true,
+		"FILE_SKIP_COMPLETION_PORT_ON_SUCCESS":         true,
+		"FILE_SKIP_SET_EVENT_ON_HANDLE":                true,
+		"FILE_TYPE_CHAR":                               true,
+		"FILE_TYPE_DISK":                               true,
+		"FILE_TYPE_PIPE":                               true,
+		"FILE_TYPE_REMOTE":                             true,
+		"FILE_TYPE_UNKNOWN":                            true,
+		"FILE_WRITE_ATTRIBUTES":                        true,
+		"FLUSHO":                                       true,
+		"FORMAT_MESSAGE_ALLOCATE_BUFFER":               true,
+		"FORMAT_MESSAGE_ARGUMENT_ARRAY":                true,
+		"FORMAT_MESSAGE_FROM_HMODULE":                  true,
+		"FORMAT_MESSAGE_FROM_STRING":                   true,
+		"FORMAT_MESSAGE_FROM_SYSTEM":                   true,
+		"FORMAT_MESSAGE_IGNORE_INSERTS":                true,
+		"FORMAT_MESSAGE_MAX_WIDTH_MASK":                true,
+		"FSCTL_GET_REPARSE_POINT":                      true,
+		"F_ADDFILESIGS":                                true,
+		"F_ADDSIGS":                                    true,
+		"F_ALLOCATEALL":                                true,
+		"F_ALLOCATECONTIG":                             true,
+		"F_CANCEL":                                     true,
+		"F_CHKCLEAN":                                   true,
+		"F_CLOSEM":                                     true,
+		"F_DUP2FD":                                     true,
+		"F_DUP2FD_CLOEXEC":                             true,
+		"F_DUPFD":                                      true,
+		"F_DUPFD_CLOEXEC":                              true,
+		"F_EXLCK":                                      true,
+		"F_FLUSH_DATA":                                 true,
+		"F_FREEZE_FS":                                  true,
+		"F_FSCTL":                                      true,
+		"F_FSDIRMASK":                                  true,
+		"F_FSIN":                                       true,
+		"F_FSINOUT":                                    true,
+		"F_FSOUT":                                      true,
+		"F_FSPRIV":                                     true,
+		"F_FSVOID":                                     true,
+		"F_FULLFSYNC":                                  true,
+		"F_GETFD":                                      true,
+		"F_GETFL":                                      true,
+		"F_GETLEASE":                                   true,
+		"F_GETLK":                                      true,
+		"F_GETLK64":                                    true,
+		"F_GETLKPID":                                   true,
+		"F_GETNOSIGPIPE":                               true,
+		"F_GETOWN":                                     true,
+		"F_GETOWN_EX":                                  true,
+		"F_GETPATH":                                    true,
+		"F_GETPATH_MTMINFO":                            true,
+		"F_GETPIPE_SZ":                                 true,
+		"F_GETPROTECTIONCLASS":                         true,
+		"F_GETSIG":                                     true,
+		"F_GLOBAL_NOCACHE":                             true,
+		"F_LOCK":                                       true,
+		"F_LOG2PHYS":                                   true,
+		"F_LOG2PHYS_EXT":                               true,
+		"F_MARKDEPENDENCY":                             true,
+		"F_MAXFD":                                      true,
+		"F_NOCACHE":                                    true,
+		"F_NODIRECT":                                   true,
+		"F_NOTIFY":                                     true,
+		"F_OGETLK":                                     true,
+		"F_OK":                                         true,
+		"F_OSETLK":                                     true,
+		"F_OSETLKW":                                    true,
+		"F_PARAM_MASK":                                 true,
+		"F_PARAM_MAX":                                  true,
+		"F_PATHPKG_CHECK":                              true,
+		"F_PEOFPOSMODE":                                true,
+		"F_PREALLOCATE":                                true,
+		"F_RDADVISE":                                   true,
+		"F_RDAHEAD":                                    true,
+		"F_RDLCK":                                      true,
+		"F_READAHEAD":                                  true,
+		"F_READBOOTSTRAP":                              true,
+		"F_SETBACKINGSTORE":                            true,
+		"F_SETFD":                                      true,
+		"F_SETFL":                                      true,
+		"F_SETLEASE":                                   true,
+		"F_SETLK":                                      true,
+		"F_SETLK64":                                    true,
+		"F_SETLKW":                                     true,
+		"F_SETLKW64":                                   true,
+		"F_SETLK_REMOTE":                               true,
+		"F_SETNOSIGPIPE":                               true,
+		"F_SETOWN":                                     true,
+		"F_SETOWN_EX":                                  true,
+		"F_SETPIPE_SZ":                                 true,
+		"F_SETPROTECTIONCLASS":                         true,
+		"F_SETSIG":                                     true,
+		"F_SETSIZE":                                    true,
+		"F_SHLCK":                                      true,
+		"F_TEST":                                       true,
+		"F_THAW_FS":                                    true,
+		"F_TLOCK":                                      true,
+		"F_ULOCK":                                      true,
+		"F_UNLCK":                                      true,
+		"F_UNLCKSYS":                                   true,
+		"F_VOLPOSMODE":                                 true,
+		"F_WRITEBOOTSTRAP":                             true,
+		"F_WRLCK":                                      true,
+		"Faccessat":                                    true,
+		"Fallocate":                                    true,
+		"Fbootstraptransfer_t":                         true,
+		"Fchdir":                                       true,
+		"Fchflags":                                     true,
+		"Fchmod":                                       true,
+		"Fchmodat":                                     true,
+		"Fchown":                                       true,
+		"Fchownat":                                     true,
+		"FcntlFlock":                                   true,
+		"FdSet":                                        true,
+		"Fdatasync":                                    true,
+		"FileNotifyInformation":                        true,
+		"Filetime":                                     true,
+		"FindClose":                                    true,
+		"FindFirstFile":                                true,
+		"FindNextFile":                                 true,
+		"Flock":                                        true,
+		"Flock_t":                                      true,
+		"FlushBpf":                                     true,
+		"FlushFileBuffers":                             true,
+		"FlushViewOfFile":                              true,
+		"ForkExec":                                     true,
+		"ForkLock":                                     true,
+		"FormatMessage":                                true,
+		"Fpathconf":                                    true,
+		"FreeAddrInfoW":                                true,
+		"FreeEnvironmentStrings":                       true,
+		"FreeLibrary":                                  true,
+		"Fsid":                                         true,
+		"Fstat":                                        true,
+		"Fstatat":                                      true,
+		"Fstatfs":                                      true,
+		"Fstore_t":                                     true,
+		"Fsync":                                        true,
+		"Ftruncate":                                    true,
+		"FullPath":                                     true,
+		"Futimes":                                      true,
+		"Futimesat":                                    true,
+		"GENERIC_ALL":                                  true,
+		"GENERIC_EXECUTE":                              true,
+		"GENERIC_READ":                                 true,
+		"GENERIC_WRITE":                                true,
+		"GUID":                                         true,
+		"GetAcceptExSockaddrs":                         true,
+		"GetAdaptersInfo":                              true,
+		"GetAddrInfoW":                                 true,
+		"GetCommandLine":                               true,
+		"GetComputerName":                              true,
+		"GetConsoleMode":                               true,
+		"GetCurrentDirectory":                          true,
+		"GetCurrentProcess":                            true,
+		"GetEnvironmentStrings":                        true,
+		"GetEnvironmentVariable":                       true,
+		"GetExitCodeProcess":                           true,
+		"GetFileAttributes":                            true,
+		"GetFileAttributesEx":                          true,
+		"GetFileExInfoStandard":                        true,
+		"GetFileExMaxInfoLevel":                        true,
+		"GetFileInformationByHandle":                   true,
+		"GetFileType":                                  true,
+		"GetFullPathName":                              true,
+		"GetHostByName":                                true,
+		"GetIfEntry":                                   true,
+		"GetLastError":                                 true,
+		"GetLengthSid":                                 true,
+		"GetLongPathName":                              true,
+		"GetProcAddress":                               true,
+		"GetProcessTimes":                              true,
+		"GetProtoByName":                               true,
+		"GetQueuedCompletionStatus":                    true,
+		"GetServByName":                                true,
+		"GetShortPathName":                             true,
+		"GetStartupInfo":                               true,
+		"GetStdHandle":                                 true,
+		"GetSystemTimeAsFileTime":                      true,
+		"GetTempPath":                                  true,
+		"GetTimeZoneInformation":                       true,
+		"GetTokenInformation":                          true,
+		"GetUserNameEx":                                true,
+		"GetUserProfileDirectory":                      true,
+		"GetVersion":                                   true,
+		"Getcwd":                                       true,
+		"Getdents":                                     true,
+		"Getdirentries":                                true,
+		"Getdtablesize":                                true,
+		"Getegid":                                      true,
+		"Getenv":                                       true,
+		"Geteuid":                                      true,
+		"Getfsstat":                                    true,
+		"Getgid":                                       true,
+		"Getgroups":                                    true,
+		"Getpagesize":                                  true,
+		"Getpeername":                                  true,
+		"Getpgid":                                      true,
+		"Getpgrp":                                      true,
+		"Getpid":                                       true,
+		"Getppid":                                      true,
+		"Getpriority":                                  true,
+		"Getrlimit":                                    true,
+		"Getrusage":                                    true,
+		"Getsid":                                       true,
+		"Getsockname":                                  true,
+		"Getsockopt":                                   true,
+		"GetsockoptByte":                               true,
+		"GetsockoptICMPv6Filter":                       true,
+		"GetsockoptIPMreq":                             true,
+		"GetsockoptIPMreqn":                            true,
+		"GetsockoptIPv6MTUInfo":                        true,
+		"GetsockoptIPv6Mreq":                           true,
+		"GetsockoptInet4Addr":                          true,
+		"GetsockoptInt":                                true,
+		"GetsockoptUcred":                              true,
+		"Gettid":                                       true,
+		"Gettimeofday":                                 true,
+		"Getuid":                                       true,
+		"Getwd":                                        true,
+		"Getxattr":                                     true,
+		"HANDLE_FLAG_INHERIT":                          true,
+		"HKEY_CLASSES_ROOT":                            true,
+		"HKEY_CURRENT_CONFIG":                          true,
+		"HKEY_CURRENT_USER":                            true,
+		"HKEY_DYN_DATA":                                true,
+		"HKEY_LOCAL_MACHINE":                           true,
+		"HKEY_PERFORMANCE_DATA":                        true,
+		"HKEY_USERS":                                   true,
+		"HUPCL":                                        true,
+		"Handle":                                       true,
+		"Hostent":                                      true,
+		"ICANON":                                       true,
+		"ICMP6_FILTER":                                 true,
+		"ICMPV6_FILTER":                                true,
+		"ICMPv6Filter":                                 true,
+		"ICRNL":                                        true,
+		"IEXTEN":                                       true,
+		"IFAN_ARRIVAL":                                 true,
+		"IFAN_DEPARTURE":                               true,
+		"IFA_ADDRESS":                                  true,
+		"IFA_ANYCAST":                                  true,
+		"IFA_BROADCAST":                                true,
+		"IFA_CACHEINFO":                                true,
+		"IFA_F_DADFAILED":                              true,
+		"IFA_F_DEPRECATED":                             true,
+		"IFA_F_HOMEADDRESS":                            true,
+		"IFA_F_NODAD":                                  true,
+		"IFA_F_OPTIMISTIC":                             true,
+		"IFA_F_PERMANENT":                              true,
+		"IFA_F_SECONDARY":                              true,
+		"IFA_F_TEMPORARY":                              true,
+		"IFA_F_TENTATIVE":                              true,
+		"IFA_LABEL":                                    true,
+		"IFA_LOCAL":                                    true,
+		"IFA_MAX":                                      true,
+		"IFA_MULTICAST":                                true,
+		"IFA_ROUTE":                                    true,
+		"IFA_UNSPEC":                                   true,
+		"IFF_ALLMULTI":                                 true,
+		"IFF_ALTPHYS":                                  true,
+		"IFF_AUTOMEDIA":                                true,
+		"IFF_BROADCAST":                                true,
+		"IFF_CANTCHANGE":                               true,
+		"IFF_CANTCONFIG":                               true,
+		"IFF_DEBUG":                                    true,
+		"IFF_DRV_OACTIVE":                              true,
+		"IFF_DRV_RUNNING":                              true,
+		"IFF_DYING":                                    true,
+		"IFF_DYNAMIC":                                  true,
+		"IFF_LINK0":                                    true,
+		"IFF_LINK1":                                    true,
+		"IFF_LINK2":                                    true,
+		"IFF_LOOPBACK":                                 true,
+		"IFF_MASTER":                                   true,
+		"IFF_MONITOR":                                  true,
+		"IFF_MULTICAST":                                true,
+		"IFF_NOARP":                                    true,
+		"IFF_NOTRAILERS":                               true,
+		"IFF_NO_PI":                                    true,
+		"IFF_OACTIVE":                                  true,
+		"IFF_ONE_QUEUE":                                true,
+		"IFF_POINTOPOINT":                              true,
+		"IFF_POINTTOPOINT":                             true,
+		"IFF_PORTSEL":                                  true,
+		"IFF_PPROMISC":                                 true,
+		"IFF_PROMISC":                                  true,
+		"IFF_RENAMING":                                 true,
+		"IFF_RUNNING":                                  true,
+		"IFF_SIMPLEX":                                  true,
+		"IFF_SLAVE":                                    true,
+		"IFF_SMART":                                    true,
+		"IFF_STATICARP":                                true,
+		"IFF_TAP":                                      true,
+		"IFF_TUN":                                      true,
+		"IFF_TUN_EXCL":                                 true,
+		"IFF_UP":                                       true,
+		"IFF_VNET_HDR":                                 true,
+		"IFLA_ADDRESS":                                 true,
+		"IFLA_BROADCAST":                               true,
+		"IFLA_COST":                                    true,
+		"IFLA_IFALIAS":                                 true,
+		"IFLA_IFNAME":                                  true,
+		"IFLA_LINK":                                    true,
+		"IFLA_LINKINFO":                                true,
+		"IFLA_LINKMODE":                                true,
+		"IFLA_MAP":                                     true,
+		"IFLA_MASTER":                                  true,
+		"IFLA_MAX":                                     true,
+		"IFLA_MTU":                                     true,
+		"IFLA_NET_NS_PID":                              true,
+		"IFLA_OPERSTATE":                               true,
+		"IFLA_PRIORITY":                                true,
+		"IFLA_PROTINFO":                                true,
+		"IFLA_QDISC":                                   true,
+		"IFLA_STATS":                                   true,
+		"IFLA_TXQLEN":                                  true,
+		"IFLA_UNSPEC":                                  true,
+		"IFLA_WEIGHT":                                  true,
+		"IFLA_WIRELESS":                                true,
+		"IFNAMSIZ":                                     true,
+		"IFT_1822":                                     true,
+		"IFT_A12MPPSWITCH":                             true,
+		"IFT_AAL2":                                     true,
+		"IFT_AAL5":                                     true,
+		"IFT_ADSL":                                     true,
+		"IFT_AFLANE8023":                               true,
+		"IFT_AFLANE8025":                               true,
+		"IFT_ARAP":                                     true,
+		"IFT_ARCNET":                                   true,
+		"IFT_ARCNETPLUS":                               true,
+		"IFT_ASYNC":                                    true,
+		"IFT_ATM":                                      true,
+		"IFT_ATMDXI":                                   true,
+		"IFT_ATMFUNI":                                  true,
+		"IFT_ATMIMA":                                   true,
+		"IFT_ATMLOGICAL":                               true,
+		"IFT_ATMRADIO":                                 true,
+		"IFT_ATMSUBINTERFACE":                          true,
+		"IFT_ATMVCIENDPT":                              true,
+		"IFT_ATMVIRTUAL":                               true,
+		"IFT_BGPPOLICYACCOUNTING":                      true,
+		"IFT_BLUETOOTH":                                true,
+		"IFT_BRIDGE":                                   true,
+		"IFT_BSC":                                      true,
+		"IFT_CARP":                                     true,
+		"IFT_CCTEMUL":                                  true,
+		"IFT_CELLULAR":                                 true,
+		"IFT_CEPT":                                     true,
+		"IFT_CES":                                      true,
+		"IFT_CHANNEL":                                  true,
+		"IFT_CNR":                                      true,
+		"IFT_COFFEE":                                   true,
+		"IFT_COMPOSITELINK":                            true,
+		"IFT_DCN":                                      true,
+		"IFT_DIGITALPOWERLINE":                         true,
+		"IFT_DIGITALWRAPPEROVERHEADCHANNEL":            true,
+		"IFT_DLSW":                                     true,
+		"IFT_DOCSCABLEDOWNSTREAM":                      true,
+		"IFT_DOCSCABLEMACLAYER":                        true,
+		"IFT_DOCSCABLEUPSTREAM":                        true,
+		"IFT_DOCSCABLEUPSTREAMCHANNEL":                 true,
+		"IFT_DS0":                                      true,
+		"IFT_DS0BUNDLE":                                true,
+		"IFT_DS1FDL":                                   true,
+		"IFT_DS3":                                      true,
+		"IFT_DTM":                                      true,
+		"IFT_DUMMY":                                    true,
+		"IFT_DVBASILN":                                 true,
+		"IFT_DVBASIOUT":                                true,
+		"IFT_DVBRCCDOWNSTREAM":                         true,
+		"IFT_DVBRCCMACLAYER":                           true,
+		"IFT_DVBRCCUPSTREAM":                           true,
+		"IFT_ECONET":                                   true,
+		"IFT_ENC":                                      true,
+		"IFT_EON":                                      true,
+		"IFT_EPLRS":                                    true,
+		"IFT_ESCON":                                    true,
+		"IFT_ETHER":                                    true,
+		"IFT_FAITH":                                    true,
+		"IFT_FAST":                                     true,
+		"IFT_FASTETHER":                                true,
+		"IFT_FASTETHERFX":                              true,
+		"IFT_FDDI":                                     true,
+		"IFT_FIBRECHANNEL":                             true,
+		"IFT_FRAMERELAYINTERCONNECT":                   true,
+		"IFT_FRAMERELAYMPI":                            true,
+		"IFT_FRDLCIENDPT":                              true,
+		"IFT_FRELAY":                                   true,
+		"IFT_FRELAYDCE":                                true,
+		"IFT_FRF16MFRBUNDLE":                           true,
+		"IFT_FRFORWARD":                                true,
+		"IFT_G703AT2MB":                                true,
+		"IFT_G703AT64K":                                true,
+		"IFT_GIF":                                      true,
+		"IFT_GIGABITETHERNET":                          true,
+		"IFT_GR303IDT":                                 true,
+		"IFT_GR303RDT":                                 true,
+		"IFT_H323GATEKEEPER":                           true,
+		"IFT_H323PROXY":                                true,
+		"IFT_HDH1822":                                  true,
+		"IFT_HDLC":                                     true,
+		"IFT_HDSL2":                                    true,
+		"IFT_HIPERLAN2":                                true,
+		"IFT_HIPPI":                                    true,
+		"IFT_HIPPIINTERFACE":                           true,
+		"IFT_HOSTPAD":                                  true,
+		"IFT_HSSI":                                     true,
+		"IFT_HY":                                       true,
+		"IFT_IBM370PARCHAN":                            true,
+		"IFT_IDSL":                                     true,
+		"IFT_IEEE1394":                                 true,
+		"IFT_IEEE80211":                                true,
+		"IFT_IEEE80212":                                true,
+		"IFT_IEEE8023ADLAG":                            true,
+		"IFT_IFGSN":                                    true,
+		"IFT_IMT":                                      true,
+		"IFT_INFINIBAND":                               true,
+		"IFT_INTERLEAVE":                               true,
+		"IFT_IP":                                       true,
+		"IFT_IPFORWARD":                                true,
+		"IFT_IPOVERATM":                                true,
+		"IFT_IPOVERCDLC":                               true,
+		"IFT_IPOVERCLAW":                               true,
+		"IFT_IPSWITCH":                                 true,
+		"IFT_IPXIP":                                    true,
+		"IFT_ISDN":                                     true,
+		"IFT_ISDNBASIC":                                true,
+		"IFT_ISDNPRIMARY":                              true,
+		"IFT_ISDNS":                                    true,
+		"IFT_ISDNU":                                    true,
+		"IFT_ISO88022LLC":                              true,
+		"IFT_ISO88023":                                 true,
+		"IFT_ISO88024":                                 true,
+		"IFT_ISO88025":                                 true,
+		"IFT_ISO88025CRFPINT":                          true,
+		"IFT_ISO88025DTR":                              true,
+		"IFT_ISO88025FIBER":                            true,
+		"IFT_ISO88026":                                 true,
+		"IFT_ISUP":                                     true,
+		"IFT_L2VLAN":                                   true,
+		"IFT_L3IPVLAN":                                 true,
+		"IFT_L3IPXVLAN":                                true,
+		"IFT_LAPB":                                     true,
+		"IFT_LAPD":                                     true,
+		"IFT_LAPF":                                     true,
+		"IFT_LINEGROUP":                                true,
+		"IFT_LOCALTALK":                                true,
+		"IFT_LOOP":                                     true,
+		"IFT_MEDIAMAILOVERIP":                          true,
+		"IFT_MFSIGLINK":                                true,
+		"IFT_MIOX25":                                   true,
+		"IFT_MODEM":                                    true,
+		"IFT_MPC":                                      true,
+		"IFT_MPLS":                                     true,
+		"IFT_MPLSTUNNEL":                               true,
+		"IFT_MSDSL":                                    true,
+		"IFT_MVL":                                      true,
+		"IFT_MYRINET":                                  true,
+		"IFT_NFAS":                                     true,
+		"IFT_NSIP":                                     true,
+		"IFT_OPTICALCHANNEL":                           true,
+		"IFT_OPTICALTRANSPORT":                         true,
+		"IFT_OTHER":                                    true,
+		"IFT_P10":                                      true,
+		"IFT_P80":                                      true,
+		"IFT_PARA":                                     true,
+		"IFT_PDP":                                      true,
+		"IFT_PFLOG":                                    true,
+		"IFT_PFLOW":                                    true,
+		"IFT_PFSYNC":                                   true,
+		"IFT_PLC":                                      true,
+		"IFT_PON155":                                   true,
+		"IFT_PON622":                                   true,
+		"IFT_POS":                                      true,
+		"IFT_PPP":                                      true,
+		"IFT_PPPMULTILINKBUNDLE":                       true,
+		"IFT_PROPATM":                                  true,
+		"IFT_PROPBWAP2MP":                              true,
+		"IFT_PROPCNLS":                                 true,
+		"IFT_PROPDOCSWIRELESSDOWNSTREAM":               true,
+		"IFT_PROPDOCSWIRELESSMACLAYER":                 true,
+		"IFT_PROPDOCSWIRELESSUPSTREAM":                 true,
+		"IFT_PROPMUX":                                  true,
+		"IFT_PROPVIRTUAL":                              true,
+		"IFT_PROPWIRELESSP2P":                          true,
+		"IFT_PTPSERIAL":                                true,
+		"IFT_PVC":                                      true,
+		"IFT_Q2931":                                    true,
+		"IFT_QLLC":                                     true,
+		"IFT_RADIOMAC":                                 true,
+		"IFT_RADSL":                                    true,
+		"IFT_REACHDSL":                                 true,
+		"IFT_RFC1483":                                  true,
+		"IFT_RS232":                                    true,
+		"IFT_RSRB":                                     true,
+		"IFT_SDLC":                                     true,
+		"IFT_SDSL":                                     true,
+		"IFT_SHDSL":                                    true,
+		"IFT_SIP":                                      true,
+		"IFT_SIPSIG":                                   true,
+		"IFT_SIPTG":                                    true,
+		"IFT_SLIP":                                     true,
+		"IFT_SMDSDXI":                                  true,
+		"IFT_SMDSICIP":                                 true,
+		"IFT_SONET":                                    true,
+		"IFT_SONETOVERHEADCHANNEL":                     true,
+		"IFT_SONETPATH":                                true,
+		"IFT_SONETVT":                                  true,
+		"IFT_SRP":                                      true,
+		"IFT_SS7SIGLINK":                               true,
+		"IFT_STACKTOSTACK":                             true,
+		"IFT_STARLAN":                                  true,
+		"IFT_STF":                                      true,
+		"IFT_T1":                                       true,
+		"IFT_TDLC":                                     true,
+		"IFT_TELINK":                                   true,
+		"IFT_TERMPAD":                                  true,
+		"IFT_TR008":                                    true,
+		"IFT_TRANSPHDLC":                               true,
+		"IFT_TUNNEL":                                   true,
+		"IFT_ULTRA":                                    true,
+		"IFT_USB":                                      true,
+		"IFT_V11":                                      true,
+		"IFT_V35":                                      true,
+		"IFT_V36":                                      true,
+		"IFT_V37":                                      true,
+		"IFT_VDSL":                                     true,
+		"IFT_VIRTUALIPADDRESS":                         true,
+		"IFT_VIRTUALTG":                                true,
+		"IFT_VOICEDID":                                 true,
+		"IFT_VOICEEM":                                  true,
+		"IFT_VOICEEMFGD":                               true,
+		"IFT_VOICEENCAP":                               true,
+		"IFT_VOICEFGDEANA":                             true,
+		"IFT_VOICEFXO":                                 true,
+		"IFT_VOICEFXS":                                 true,
+		"IFT_VOICEOVERATM":                             true,
+		"IFT_VOICEOVERCABLE":                           true,
+		"IFT_VOICEOVERFRAMERELAY":                      true,
+		"IFT_VOICEOVERIP":                              true,
+		"IFT_X213":                                     true,
+		"IFT_X25":                                      true,
+		"IFT_X25DDN":                                   true,
+		"IFT_X25HUNTGROUP":                             true,
+		"IFT_X25MLP":                                   true,
+		"IFT_X25PLE":                                   true,
+		"IFT_XETHER":                                   true,
+		"IGNBRK":                                       true,
+		"IGNCR":                                        true,
+		"IGNORE":                                       true,
+		"IGNPAR":                                       true,
+		"IMAXBEL":                                      true,
+		"INFINITE":                                     true,
+		"INLCR":                                        true,
+		"INPCK":                                        true,
+		"INVALID_FILE_ATTRIBUTES":                      true,
+		"IN_ACCESS":                                    true,
+		"IN_ALL_EVENTS":                                true,
+		"IN_ATTRIB":                                    true,
+		"IN_CLASSA_HOST":                               true,
+		"IN_CLASSA_MAX":                                true,
+		"IN_CLASSA_NET":                                true,
+		"IN_CLASSA_NSHIFT":                             true,
+		"IN_CLASSB_HOST":                               true,
+		"IN_CLASSB_MAX":                                true,
+		"IN_CLASSB_NET":                                true,
+		"IN_CLASSB_NSHIFT":                             true,
+		"IN_CLASSC_HOST":                               true,
+		"IN_CLASSC_NET":                                true,
+		"IN_CLASSC_NSHIFT":                             true,
+		"IN_CLASSD_HOST":                               true,
+		"IN_CLASSD_NET":                                true,
+		"IN_CLASSD_NSHIFT":                             true,
+		"IN_CLOEXEC":                                   true,
+		"IN_CLOSE":                                     true,
+		"IN_CLOSE_NOWRITE":                             true,
+		"IN_CLOSE_WRITE":                               true,
+		"IN_CREATE":                                    true,
+		"IN_DELETE":                                    true,
+		"IN_DELETE_SELF":                               true,
+		"IN_DONT_FOLLOW":                               true,
+		"IN_EXCL_UNLINK":                               true,
+		"IN_IGNORED":                                   true,
+		"IN_ISDIR":                                     true,
+		"IN_LINKLOCALNETNUM":                           true,
+		"IN_LOOPBACKNET":                               true,
+		"IN_MASK_ADD":                                  true,
+		"IN_MODIFY":                                    true,
+		"IN_MOVE":                                      true,
+		"IN_MOVED_FROM":                                true,
+		"IN_MOVED_TO":                                  true,
+		"IN_MOVE_SELF":                                 true,
+		"IN_NONBLOCK":                                  true,
+		"IN_ONESHOT":                                   true,
+		"IN_ONLYDIR":                                   true,
+		"IN_OPEN":                                      true,
+		"IN_Q_OVERFLOW":                                true,
+		"IN_RFC3021_HOST":                              true,
+		"IN_RFC3021_MASK":                              true,
+		"IN_RFC3021_NET":                               true,
+		"IN_RFC3021_NSHIFT":                            true,
+		"IN_UNMOUNT":                                   true,
+		"IOC_IN":                                       true,
+		"IOC_INOUT":                                    true,
+		"IOC_OUT":                                      true,
+		"IOC_VENDOR":                                   true,
+		"IOC_WS2":                                      true,
+		"IO_REPARSE_TAG_SYMLINK":                       true,
+		"IPMreq":                                       true,
+		"IPMreqn":                                      true,
+		"IPPROTO_3PC":                                  true,
+		"IPPROTO_ADFS":                                 true,
+		"IPPROTO_AH":                                   true,
+		"IPPROTO_AHIP":                                 true,
+		"IPPROTO_APES":                                 true,
+		"IPPROTO_ARGUS":                                true,
+		"IPPROTO_AX25":                                 true,
+		"IPPROTO_BHA":                                  true,
+		"IPPROTO_BLT":                                  true,
+		"IPPROTO_BRSATMON":                             true,
+		"IPPROTO_CARP":                                 true,
+		"IPPROTO_CFTP":                                 true,
+		"IPPROTO_CHAOS":                                true,
+		"IPPROTO_CMTP":                                 true,
+		"IPPROTO_COMP":                                 true,
+		"IPPROTO_CPHB":                                 true,
+		"IPPROTO_CPNX":                                 true,
+		"IPPROTO_DCCP":                                 true,
+		"IPPROTO_DDP":                                  true,
+		"IPPROTO_DGP":                                  true,
+		"IPPROTO_DIVERT":                               true,
+		"IPPROTO_DIVERT_INIT":                          true,
+		"IPPROTO_DIVERT_RESP":                          true,
+		"IPPROTO_DONE":                                 true,
+		"IPPROTO_DSTOPTS":                              true,
+		"IPPROTO_EGP":                                  true,
+		"IPPROTO_EMCON":                                true,
+		"IPPROTO_ENCAP":                                true,
+		"IPPROTO_EON":                                  true,
+		"IPPROTO_ESP":                                  true,
+		"IPPROTO_ETHERIP":                              true,
+		"IPPROTO_FRAGMENT":                             true,
+		"IPPROTO_GGP":                                  true,
+		"IPPROTO_GMTP":                                 true,
+		"IPPROTO_GRE":                                  true,
+		"IPPROTO_HELLO":                                true,
+		"IPPROTO_HMP":                                  true,
+		"IPPROTO_HOPOPTS":                              true,
+		"IPPROTO_ICMP":                                 true,
+		"IPPROTO_ICMPV6":                               true,
+		"IPPROTO_IDP":                                  true,
+		"IPPROTO_IDPR":                                 true,
+		"IPPROTO_IDRP":                                 true,
+		"IPPROTO_IGMP":                                 true,
+		"IPPROTO_IGP":                                  true,
+		"IPPROTO_IGRP":                                 true,
+		"IPPROTO_IL":                                   true,
+		"IPPROTO_INLSP":                                true,
+		"IPPROTO_INP":                                  true,
+		"IPPROTO_IP":                                   true,
+		"IPPROTO_IPCOMP":                               true,
+		"IPPROTO_IPCV":                                 true,
+		"IPPROTO_IPEIP":                                true,
+		"IPPROTO_IPIP":                                 true,
+		"IPPROTO_IPPC":                                 true,
+		"IPPROTO_IPV4":                                 true,
+		"IPPROTO_IPV6":                                 true,
+		"IPPROTO_IPV6_ICMP":                            true,
+		"IPPROTO_IRTP":                                 true,
+		"IPPROTO_KRYPTOLAN":                            true,
+		"IPPROTO_LARP":                                 true,
+		"IPPROTO_LEAF1":                                true,
+		"IPPROTO_LEAF2":                                true,
+		"IPPROTO_MAX":                                  true,
+		"IPPROTO_MAXID":                                true,
+		"IPPROTO_MEAS":                                 true,
+		"IPPROTO_MH":                                   true,
+		"IPPROTO_MHRP":                                 true,
+		"IPPROTO_MICP":                                 true,
+		"IPPROTO_MOBILE":                               true,
+		"IPPROTO_MPLS":                                 true,
+		"IPPROTO_MTP":                                  true,
+		"IPPROTO_MUX":                                  true,
+		"IPPROTO_ND":                                   true,
+		"IPPROTO_NHRP":                                 true,
+		"IPPROTO_NONE":                                 true,
+		"IPPROTO_NSP":                                  true,
+		"IPPROTO_NVPII":                                true,
+		"IPPROTO_OLD_DIVERT":                           true,
+		"IPPROTO_OSPFIGP":                              true,
+		"IPPROTO_PFSYNC":                               true,
+		"IPPROTO_PGM":                                  true,
+		"IPPROTO_PIGP":                                 true,
+		"IPPROTO_PIM":                                  true,
+		"IPPROTO_PRM":                                  true,
+		"IPPROTO_PUP":                                  true,
+		"IPPROTO_PVP":                                  true,
+		"IPPROTO_RAW":                                  true,
+		"IPPROTO_RCCMON":                               true,
+		"IPPROTO_RDP":                                  true,
+		"IPPROTO_ROUTING":                              true,
+		"IPPROTO_RSVP":                                 true,
+		"IPPROTO_RVD":                                  true,
+		"IPPROTO_SATEXPAK":                             true,
+		"IPPROTO_SATMON":                               true,
+		"IPPROTO_SCCSP":                                true,
+		"IPPROTO_SCTP":                                 true,
+		"IPPROTO_SDRP":                                 true,
+		"IPPROTO_SEND":                                 true,
+		"IPPROTO_SEP":                                  true,
+		"IPPROTO_SKIP":                                 true,
+		"IPPROTO_SPACER":                               true,
+		"IPPROTO_SRPC":                                 true,
+		"IPPROTO_ST":                                   true,
+		"IPPROTO_SVMTP":                                true,
+		"IPPROTO_SWIPE":                                true,
+		"IPPROTO_TCF":                                  true,
+		"IPPROTO_TCP":                                  true,
+		"IPPROTO_TLSP":                                 true,
+		"IPPROTO_TP":                                   true,
+		"IPPROTO_TPXX":                                 true,
+		"IPPROTO_TRUNK1":                               true,
+		"IPPROTO_TRUNK2":                               true,
+		"IPPROTO_TTP":                                  true,
+		"IPPROTO_UDP":                                  true,
+		"IPPROTO_UDPLITE":                              true,
+		"IPPROTO_VINES":                                true,
+		"IPPROTO_VISA":                                 true,
+		"IPPROTO_VMTP":                                 true,
+		"IPPROTO_VRRP":                                 true,
+		"IPPROTO_WBEXPAK":                              true,
+		"IPPROTO_WBMON":                                true,
+		"IPPROTO_WSN":                                  true,
+		"IPPROTO_XNET":                                 true,
+		"IPPROTO_XTP":                                  true,
+		"IPV6_2292DSTOPTS":                             true,
+		"IPV6_2292HOPLIMIT":                            true,
+		"IPV6_2292HOPOPTS":                             true,
+		"IPV6_2292NEXTHOP":                             true,
+		"IPV6_2292PKTINFO":                             true,
+		"IPV6_2292PKTOPTIONS":                          true,
+		"IPV6_2292RTHDR":                               true,
+		"IPV6_ADDRFORM":                                true,
+		"IPV6_ADD_MEMBERSHIP":                          true,
+		"IPV6_AUTHHDR":                                 true,
+		"IPV6_AUTH_LEVEL":                              true,
+		"IPV6_AUTOFLOWLABEL":                           true,
+		"IPV6_BINDANY":                                 true,
+		"IPV6_BINDV6ONLY":                              true,
+		"IPV6_BOUND_IF":                                true,
+		"IPV6_CHECKSUM":                                true,
+		"IPV6_DEFAULT_MULTICAST_HOPS":                  true,
+		"IPV6_DEFAULT_MULTICAST_LOOP":                  true,
+		"IPV6_DEFHLIM":                                 true,
+		"IPV6_DONTFRAG":                                true,
+		"IPV6_DROP_MEMBERSHIP":                         true,
+		"IPV6_DSTOPTS":                                 true,
+		"IPV6_ESP_NETWORK_LEVEL":                       true,
+		"IPV6_ESP_TRANS_LEVEL":                         true,
+		"IPV6_FAITH":                                   true,
+		"IPV6_FLOWINFO_MASK":                           true,
+		"IPV6_FLOWLABEL_MASK":                          true,
+		"IPV6_FRAGTTL":                                 true,
+		"IPV6_FW_ADD":                                  true,
+		"IPV6_FW_DEL":                                  true,
+		"IPV6_FW_FLUSH":                                true,
+		"IPV6_FW_GET":                                  true,
+		"IPV6_FW_ZERO":                                 true,
+		"IPV6_HLIMDEC":                                 true,
+		"IPV6_HOPLIMIT":                                true,
+		"IPV6_HOPOPTS":                                 true,
+		"IPV6_IPCOMP_LEVEL":                            true,
+		"IPV6_IPSEC_POLICY":                            true,
+		"IPV6_JOIN_ANYCAST":                            true,
+		"IPV6_JOIN_GROUP":                              true,
+		"IPV6_LEAVE_ANYCAST":                           true,
+		"IPV6_LEAVE_GROUP":                             true,
+		"IPV6_MAXHLIM":                                 true,
+		"IPV6_MAXOPTHDR":                               true,
+		"IPV6_MAXPACKET":                               true,
+		"IPV6_MAX_GROUP_SRC_FILTER":                    true,
+		"IPV6_MAX_MEMBERSHIPS":                         true,
+		"IPV6_MAX_SOCK_SRC_FILTER":                     true,
+		"IPV6_MIN_MEMBERSHIPS":                         true,
+		"IPV6_MMTU":                                    true,
+		"IPV6_MSFILTER":                                true,
+		"IPV6_MTU":                                     true,
+		"IPV6_MTU_DISCOVER":                            true,
+		"IPV6_MULTICAST_HOPS":                          true,
+		"IPV6_MULTICAST_IF":                            true,
+		"IPV6_MULTICAST_LOOP":                          true,
+		"IPV6_NEXTHOP":                                 true,
+		"IPV6_OPTIONS":                                 true,
+		"IPV6_PATHMTU":                                 true,
+		"IPV6_PIPEX":                                   true,
+		"IPV6_PKTINFO":                                 true,
+		"IPV6_PMTUDISC_DO":                             true,
+		"IPV6_PMTUDISC_DONT":                           true,
+		"IPV6_PMTUDISC_PROBE":                          true,
+		"IPV6_PMTUDISC_WANT":                           true,
+		"IPV6_PORTRANGE":                               true,
+		"IPV6_PORTRANGE_DEFAULT":                       true,
+		"IPV6_PORTRANGE_HIGH":                          true,
+		"IPV6_PORTRANGE_LOW":                           true,
+		"IPV6_PREFER_TEMPADDR":                         true,
+		"IPV6_RECVDSTOPTS":                             true,
+		"IPV6_RECVDSTPORT":                             true,
+		"IPV6_RECVERR":                                 true,
+		"IPV6_RECVHOPLIMIT":                            true,
+		"IPV6_RECVHOPOPTS":                             true,
+		"IPV6_RECVPATHMTU":                             true,
+		"IPV6_RECVPKTINFO":                             true,
+		"IPV6_RECVRTHDR":                               true,
+		"IPV6_RECVTCLASS":                              true,
+		"IPV6_ROUTER_ALERT":                            true,
+		"IPV6_RTABLE":                                  true,
+		"IPV6_RTHDR":                                   true,
+		"IPV6_RTHDRDSTOPTS":                            true,
+		"IPV6_RTHDR_LOOSE":                             true,
+		"IPV6_RTHDR_STRICT":                            true,
+		"IPV6_RTHDR_TYPE_0":                            true,
+		"IPV6_RXDSTOPTS":                               true,
+		"IPV6_RXHOPOPTS":                               true,
+		"IPV6_SOCKOPT_RESERVED1":                       true,
+		"IPV6_TCLASS":                                  true,
+		"IPV6_UNICAST_HOPS":                            true,
+		"IPV6_USE_MIN_MTU":                             true,
+		"IPV6_V6ONLY":                                  true,
+		"IPV6_VERSION":                                 true,
+		"IPV6_VERSION_MASK":                            true,
+		"IPV6_XFRM_POLICY":                             true,
+		"IP_ADD_MEMBERSHIP":                            true,
+		"IP_ADD_SOURCE_MEMBERSHIP":                     true,
+		"IP_AUTH_LEVEL":                                true,
+		"IP_BINDANY":                                   true,
+		"IP_BLOCK_SOURCE":                              true,
+		"IP_BOUND_IF":                                  true,
+		"IP_DEFAULT_MULTICAST_LOOP":                    true,
+		"IP_DEFAULT_MULTICAST_TTL":                     true,
+		"IP_DF":                                        true,
+		"IP_DIVERTFL":                                  true,
+		"IP_DONTFRAG":                                  true,
+		"IP_DROP_MEMBERSHIP":                           true,
+		"IP_DROP_SOURCE_MEMBERSHIP":                    true,
+		"IP_DUMMYNET3":                                 true,
+		"IP_DUMMYNET_CONFIGURE":                        true,
+		"IP_DUMMYNET_DEL":                              true,
+		"IP_DUMMYNET_FLUSH":                            true,
+		"IP_DUMMYNET_GET":                              true,
+		"IP_EF":                                        true,
+		"IP_ERRORMTU":                                  true,
+		"IP_ESP_NETWORK_LEVEL":                         true,
+		"IP_ESP_TRANS_LEVEL":                           true,
+		"IP_FAITH":                                     true,
+		"IP_FREEBIND":                                  true,
+		"IP_FW3":                                       true,
+		"IP_FW_ADD":                                    true,
+		"IP_FW_DEL":                                    true,
+		"IP_FW_FLUSH":                                  true,
+		"IP_FW_GET":                                    true,
+		"IP_FW_NAT_CFG":                                true,
+		"IP_FW_NAT_DEL":                                true,
+		"IP_FW_NAT_GET_CONFIG":                         true,
+		"IP_FW_NAT_GET_LOG":                            true,
+		"IP_FW_RESETLOG":                               true,
+		"IP_FW_TABLE_ADD":                              true,
+		"IP_FW_TABLE_DEL":                              true,
+		"IP_FW_TABLE_FLUSH":                            true,
+		"IP_FW_TABLE_GETSIZE":                          true,
+		"IP_FW_TABLE_LIST":                             true,
+		"IP_FW_ZERO":                                   true,
+		"IP_HDRINCL":                                   true,
+		"IP_IPCOMP_LEVEL":                              true,
+		"IP_IPSECFLOWINFO":                             true,
+		"IP_IPSEC_LOCAL_AUTH":                          true,
+		"IP_IPSEC_LOCAL_CRED":                          true,
+		"IP_IPSEC_LOCAL_ID":                            true,
+		"IP_IPSEC_POLICY":                              true,
+		"IP_IPSEC_REMOTE_AUTH":                         true,
+		"IP_IPSEC_REMOTE_CRED":                         true,
+		"IP_IPSEC_REMOTE_ID":                           true,
+		"IP_MAXPACKET":                                 true,
+		"IP_MAX_GROUP_SRC_FILTER":                      true,
+		"IP_MAX_MEMBERSHIPS":                           true,
+		"IP_MAX_SOCK_MUTE_FILTER":                      true,
+		"IP_MAX_SOCK_SRC_FILTER":                       true,
+		"IP_MAX_SOURCE_FILTER":                         true,
+		"IP_MF":                                        true,
+		"IP_MINFRAGSIZE":                               true,
+		"IP_MINTTL":                                    true,
+		"IP_MIN_MEMBERSHIPS":                           true,
+		"IP_MSFILTER":                                  true,
+		"IP_MSS":                                       true,
+		"IP_MTU":                                       true,
+		"IP_MTU_DISCOVER":                              true,
+		"IP_MULTICAST_IF":                              true,
+		"IP_MULTICAST_IFINDEX":                         true,
+		"IP_MULTICAST_LOOP":                            true,
+		"IP_MULTICAST_TTL":                             true,
+		"IP_MULTICAST_VIF":                             true,
+		"IP_NAT__XXX":                                  true,
+		"IP_OFFMASK":                                   true,
+		"IP_OLD_FW_ADD":                                true,
+		"IP_OLD_FW_DEL":                                true,
+		"IP_OLD_FW_FLUSH":                              true,
+		"IP_OLD_FW_GET":                                true,
+		"IP_OLD_FW_RESETLOG":                           true,
+		"IP_OLD_FW_ZERO":                               true,
+		"IP_ONESBCAST":                                 true,
+		"IP_OPTIONS":                                   true,
+		"IP_ORIGDSTADDR":                               true,
+		"IP_PASSSEC":                                   true,
+		"IP_PIPEX":                                     true,
+		"IP_PKTINFO":                                   true,
+		"IP_PKTOPTIONS":                                true,
+		"IP_PMTUDISC":                                  true,
+		"IP_PMTUDISC_DO":                               true,
+		"IP_PMTUDISC_DONT":                             true,
+		"IP_PMTUDISC_PROBE":                            true,
+		"IP_PMTUDISC_WANT":                             true,
+		"IP_PORTRANGE":                                 true,
+		"IP_PORTRANGE_DEFAULT":                         true,
+		"IP_PORTRANGE_HIGH":                            true,
+		"IP_PORTRANGE_LOW":                             true,
+		"IP_RECVDSTADDR":                               true,
+		"IP_RECVDSTPORT":                               true,
+		"IP_RECVERR":                                   true,
+		"IP_RECVIF":                                    true,
+		"IP_RECVOPTS":                                  true,
+		"IP_RECVORIGDSTADDR":                           true,
+		"IP_RECVPKTINFO":                               true,
+		"IP_RECVRETOPTS":                               true,
+		"IP_RECVRTABLE":                                true,
+		"IP_RECVTOS":                                   true,
+		"IP_RECVTTL":                                   true,
+		"IP_RETOPTS":                                   true,
+		"IP_RF":                                        true,
+		"IP_ROUTER_ALERT":                              true,
+		"IP_RSVP_OFF":                                  true,
+		"IP_RSVP_ON":                                   true,
+		"IP_RSVP_VIF_OFF":                              true,
+		"IP_RSVP_VIF_ON":                               true,
+		"IP_RTABLE":                                    true,
+		"IP_SENDSRCADDR":                               true,
+		"IP_STRIPHDR":                                  true,
+		"IP_TOS":                                       true,
+		"IP_TRAFFIC_MGT_BACKGROUND":                    true,
+		"IP_TRANSPARENT":                               true,
+		"IP_TTL":                                       true,
+		"IP_UNBLOCK_SOURCE":                            true,
+		"IP_XFRM_POLICY":                               true,
+		"IPv6MTUInfo":                                  true,
+		"IPv6Mreq":                                     true,
+		"ISIG":                                         true,
+		"ISTRIP":                                       true,
+		"IUCLC":                                        true,
+		"IUTF8":                                        true,
+		"IXANY":                                        true,
+		"IXOFF":                                        true,
+		"IXON":                                         true,
+		"IfAddrmsg":                                    true,
+		"IfAnnounceMsghdr":                             true,
+		"IfData":                                       true,
+		"IfInfomsg":                                    true,
+		"IfMsghdr":                                     true,
+		"IfaMsghdr":                                    true,
+		"IfmaMsghdr":                                   true,
+		"IfmaMsghdr2":                                  true,
+		"ImplementsGetwd":                              true,
+		"Inet4Pktinfo":                                 true,
+		"Inet6Pktinfo":                                 true,
+		"InotifyAddWatch":                              true,
+		"InotifyEvent":                                 true,
+		"InotifyInit":                                  true,
+		"InotifyInit1":                                 true,
+		"InotifyRmWatch":                               true,
+		"InterfaceAddrMessage":                         true,
+		"InterfaceAnnounceMessage":                     true,
+		"InterfaceInfo":                                true,
+		"InterfaceMessage":                             true,
+		"InterfaceMulticastAddrMessage":                true,
+		"InvalidHandle":                                true,
+		"Ioperm":                                       true,
+		"Iopl":                                         true,
+		"Iovec":                                        true,
+		"IpAdapterInfo":                                true,
+		"IpAddrString":                                 true,
+		"IpAddressString":                              true,
+		"IpMaskString":                                 true,
+		"Issetugid":                                    true,
+		"KEY_ALL_ACCESS":                               true,
+		"KEY_CREATE_LINK":                              true,
+		"KEY_CREATE_SUB_KEY":                           true,
+		"KEY_ENUMERATE_SUB_KEYS":                       true,
+		"KEY_EXECUTE":                                  true,
+		"KEY_NOTIFY":                                   true,
+		"KEY_QUERY_VALUE":                              true,
+		"KEY_READ":                                     true,
+		"KEY_SET_VALUE":                                true,
+		"KEY_WOW64_32KEY":                              true,
+		"KEY_WOW64_64KEY":                              true,
+		"KEY_WRITE":                                    true,
+		"Kevent":                                       true,
+		"Kevent_t":                                     true,
+		"Kill":                                         true,
+		"Klogctl":                                      true,
+		"Kqueue":                                       true,
+		"LANG_ENGLISH":                                 true,
+		"LAYERED_PROTOCOL":                             true,
+		"LCNT_OVERLOAD_FLUSH":                          true,
+		"LINUX_REBOOT_CMD_CAD_OFF":                     true,
+		"LINUX_REBOOT_CMD_CAD_ON":                      true,
+		"LINUX_REBOOT_CMD_HALT":                        true,
+		"LINUX_REBOOT_CMD_KEXEC":                       true,
+		"LINUX_REBOOT_CMD_POWER_OFF":                   true,
+		"LINUX_REBOOT_CMD_RESTART":                     true,
+		"LINUX_REBOOT_CMD_RESTART2":                    true,
+		"LINUX_REBOOT_CMD_SW_SUSPEND":                  true,
+		"LINUX_REBOOT_MAGIC1":                          true,
+		"LINUX_REBOOT_MAGIC2":                          true,
+		"LOCK_EX":                                      true,
+		"LOCK_NB":                                      true,
+		"LOCK_SH":                                      true,
+		"LOCK_UN":                                      true,
+		"LazyDLL":                                      true,
+		"LazyProc":                                     true,
+		"Lchown":                                       true,
+		"Linger":                                       true,
+		"Link":                                         true,
+		"Listen":                                       true,
+		"Listxattr":                                    true,
+		"LoadCancelIoEx":                               true,
+		"LoadConnectEx":                                true,
+		"LoadCreateSymbolicLink":                       true,
+		"LoadDLL":                                      true,
+		"LoadGetAddrInfo":                              true,
+		"LoadLibrary":                                  true,
+		"LoadSetFileCompletionNotificationModes":       true,
+		"LocalFree":                                    true,
+		"Log2phys_t":                                   true,
+		"LookupAccountName":                            true,
+		"LookupAccountSid":                             true,
+		"LookupSID":                                    true,
+		"LsfJump":                                      true,
+		"LsfSocket":                                    true,
+		"LsfStmt":                                      true,
+		"Lstat":                                        true,
+		"MADV_AUTOSYNC":                                true,
+		"MADV_CAN_REUSE":                               true,
+		"MADV_CORE":                                    true,
+		"MADV_DOFORK":                                  true,
+		"MADV_DONTFORK":                                true,
+		"MADV_DONTNEED":                                true,
+		"MADV_FREE":                                    true,
+		"MADV_FREE_REUSABLE":                           true,
+		"MADV_FREE_REUSE":                              true,
+		"MADV_HUGEPAGE":                                true,
+		"MADV_HWPOISON":                                true,
+		"MADV_MERGEABLE":                               true,
+		"MADV_NOCORE":                                  true,
+		"MADV_NOHUGEPAGE":                              true,
+		"MADV_NORMAL":                                  true,
+		"MADV_NOSYNC":                                  true,
+		"MADV_PROTECT":                                 true,
+		"MADV_RANDOM":                                  true,
+		"MADV_REMOVE":                                  true,
+		"MADV_SEQUENTIAL":                              true,
+		"MADV_SPACEAVAIL":                              true,
+		"MADV_UNMERGEABLE":                             true,
+		"MADV_WILLNEED":                                true,
+		"MADV_ZERO_WIRED_PAGES":                        true,
+		"MAP_32BIT":                                    true,
+		"MAP_ALIGNED_SUPER":                            true,
+		"MAP_ALIGNMENT_16MB":                           true,
+		"MAP_ALIGNMENT_1TB":                            true,
+		"MAP_ALIGNMENT_256TB":                          true,
+		"MAP_ALIGNMENT_4GB":                            true,
+		"MAP_ALIGNMENT_64KB":                           true,
+		"MAP_ALIGNMENT_64PB":                           true,
+		"MAP_ALIGNMENT_MASK":                           true,
+		"MAP_ALIGNMENT_SHIFT":                          true,
+		"MAP_ANON":                                     true,
+		"MAP_ANONYMOUS":                                true,
+		"MAP_COPY":                                     true,
+		"MAP_DENYWRITE":                                true,
+		"MAP_EXECUTABLE":                               true,
+		"MAP_FILE":                                     true,
+		"MAP_FIXED":                                    true,
+		"MAP_FLAGMASK":                                 true,
+		"MAP_GROWSDOWN":                                true,
+		"MAP_HASSEMAPHORE":                             true,
+		"MAP_HUGETLB":                                  true,
+		"MAP_INHERIT":                                  true,
+		"MAP_INHERIT_COPY":                             true,
+		"MAP_INHERIT_DEFAULT":                          true,
+		"MAP_INHERIT_DONATE_COPY":                      true,
+		"MAP_INHERIT_NONE":                             true,
+		"MAP_INHERIT_SHARE":                            true,
+		"MAP_JIT":                                      true,
+		"MAP_LOCKED":                                   true,
+		"MAP_NOCACHE":                                  true,
+		"MAP_NOCORE":                                   true,
+		"MAP_NOEXTEND":                                 true,
+		"MAP_NONBLOCK":                                 true,
+		"MAP_NORESERVE":                                true,
+		"MAP_NOSYNC":                                   true,
+		"MAP_POPULATE":                                 true,
+		"MAP_PREFAULT_READ":                            true,
+		"MAP_PRIVATE":                                  true,
+		"MAP_RENAME":                                   true,
+		"MAP_RESERVED0080":                             true,
+		"MAP_RESERVED0100":                             true,
+		"MAP_SHARED":                                   true,
+		"MAP_STACK":                                    true,
+		"MAP_TRYFIXED":                                 true,
+		"MAP_TYPE":                                     true,
+		"MAP_WIRED":                                    true,
+		"MAXIMUM_REPARSE_DATA_BUFFER_SIZE":             true,
+		"MAXLEN_IFDESCR":                               true,
+		"MAXLEN_PHYSADDR":                              true,
+		"MAX_ADAPTER_ADDRESS_LENGTH":                   true,
+		"MAX_ADAPTER_DESCRIPTION_LENGTH":               true,
+		"MAX_ADAPTER_NAME_LENGTH":                      true,
+		"MAX_COMPUTERNAME_LENGTH":                      true,
+		"MAX_INTERFACE_NAME_LEN":                       true,
+		"MAX_LONG_PATH":                                true,
+		"MAX_PATH":                                     true,
+		"MAX_PROTOCOL_CHAIN":                           true,
+		"MCL_CURRENT":                                  true,
+		"MCL_FUTURE":                                   true,
+		"MNT_DETACH":                                   true,
+		"MNT_EXPIRE":                                   true,
+		"MNT_FORCE":                                    true,
+		"MSG_BCAST":                                    true,
+		"MSG_CMSG_CLOEXEC":                             true,
+		"MSG_COMPAT":                                   true,
+		"MSG_CONFIRM":                                  true,
+		"MSG_CONTROLMBUF":                              true,
+		"MSG_CTRUNC":                                   true,
+		"MSG_DONTROUTE":                                true,
+		"MSG_DONTWAIT":                                 true,
+		"MSG_EOF":                                      true,
+		"MSG_EOR":                                      true,
+		"MSG_ERRQUEUE":                                 true,
+		"MSG_FASTOPEN":                                 true,
+		"MSG_FIN":                                      true,
+		"MSG_FLUSH":                                    true,
+		"MSG_HAVEMORE":                                 true,
+		"MSG_HOLD":                                     true,
+		"MSG_IOVUSRSPACE":                              true,
+		"MSG_LENUSRSPACE":                              true,
+		"MSG_MCAST":                                    true,
+		"MSG_MORE":                                     true,
+		"MSG_NAMEMBUF":                                 true,
+		"MSG_NBIO":                                     true,
+		"MSG_NEEDSA":                                   true,
+		"MSG_NOSIGNAL":                                 true,
+		"MSG_NOTIFICATION":                             true,
+		"MSG_OOB":                                      true,
+		"MSG_PEEK":                                     true,
+		"MSG_PROXY":                                    true,
+		"MSG_RCVMORE":                                  true,
+		"MSG_RST":                                      true,
+		"MSG_SEND":                                     true,
+		"MSG_SYN":                                      true,
+		"MSG_TRUNC":                                    true,
+		"MSG_TRYHARD":                                  true,
+		"MSG_USERFLAGS":                                true,
+		"MSG_WAITALL":                                  true,
+		"MSG_WAITFORONE":                               true,
+		"MSG_WAITSTREAM":                               true,
+		"MS_ACTIVE":                                    true,
+		"MS_ASYNC":                                     true,
+		"MS_BIND":                                      true,
+		"MS_DEACTIVATE":                                true,
+		"MS_DIRSYNC":                                   true,
+		"MS_INVALIDATE":                                true,
+		"MS_I_VERSION":                                 true,
+		"MS_KERNMOUNT":                                 true,
+		"MS_KILLPAGES":                                 true,
+		"MS_MANDLOCK":                                  true,
+		"MS_MGC_MSK":                                   true,
+		"MS_MGC_VAL":                                   true,
+		"MS_MOVE":                                      true,
+		"MS_NOATIME":                                   true,
+		"MS_NODEV":                                     true,
+		"MS_NODIRATIME":                                true,
+		"MS_NOEXEC":                                    true,
+		"MS_NOSUID":                                    true,
+		"MS_NOUSER":                                    true,
+		"MS_POSIXACL":                                  true,
+		"MS_PRIVATE":                                   true,
+		"MS_RDONLY":                                    true,
+		"MS_REC":                                       true,
+		"MS_RELATIME":                                  true,
+		"MS_REMOUNT":                                   true,
+		"MS_RMT_MASK":                                  true,
+		"MS_SHARED":                                    true,
+		"MS_SILENT":                                    true,
+		"MS_SLAVE":                                     true,
+		"MS_STRICTATIME":                               true,
+		"MS_SYNC":                                      true,
+		"MS_SYNCHRONOUS":                               true,
+		"MS_UNBINDABLE":                                true,
+		"Madvise":                                      true,
+		"MapViewOfFile":                                true,
+		"MaxTokenInfoClass":                            true,
+		"Mclpool":                                      true,
+		"MibIfRow":                                     true,
+		"Mkdir":                                        true,
+		"Mkdirat":                                      true,
+		"Mkfifo":                                       true,
+		"Mknod":                                        true,
+		"Mknodat":                                      true,
+		"Mlock":                                        true,
+		"Mlockall":                                     true,
+		"Mmap":                                         true,
+		"Mount":                                        true,
+		"MoveFile":                                     true,
+		"Mprotect":                                     true,
+		"Msghdr":                                       true,
+		"Munlock":                                      true,
+		"Munlockall":                                   true,
+		"Munmap":                                       true,
+		"MustLoadDLL":                                  true,
+		"NAME_MAX":                                     true,
+		"NETLINK_ADD_MEMBERSHIP":                       true,
+		"NETLINK_AUDIT":                                true,
+		"NETLINK_BROADCAST_ERROR":                      true,
+		"NETLINK_CONNECTOR":                            true,
+		"NETLINK_DNRTMSG":                              true,
+		"NETLINK_DROP_MEMBERSHIP":                      true,
+		"NETLINK_ECRYPTFS":                             true,
+		"NETLINK_FIB_LOOKUP":                           true,
+		"NETLINK_FIREWALL":                             true,
+		"NETLINK_GENERIC":                              true,
+		"NETLINK_INET_DIAG":                            true,
+		"NETLINK_IP6_FW":                               true,
+		"NETLINK_ISCSI":                                true,
+		"NETLINK_KOBJECT_UEVENT":                       true,
+		"NETLINK_NETFILTER":                            true,
+		"NETLINK_NFLOG":                                true,
+		"NETLINK_NO_ENOBUFS":                           true,
+		"NETLINK_PKTINFO":                              true,
+		"NETLINK_RDMA":                                 true,
+		"NETLINK_ROUTE":                                true,
+		"NETLINK_SCSITRANSPORT":                        true,
+		"NETLINK_SELINUX":                              true,
+		"NETLINK_UNUSED":                               true,
+		"NETLINK_USERSOCK":                             true,
+		"NETLINK_XFRM":                                 true,
+		"NET_RT_DUMP":                                  true,
+		"NET_RT_DUMP2":                                 true,
+		"NET_RT_FLAGS":                                 true,
+		"NET_RT_IFLIST":                                true,
+		"NET_RT_IFLIST2":                               true,
+		"NET_RT_IFLISTL":                               true,
+		"NET_RT_IFMALIST":                              true,
+		"NET_RT_MAXID":                                 true,
+		"NET_RT_OIFLIST":                               true,
+		"NET_RT_OOIFLIST":                              true,
+		"NET_RT_STAT":                                  true,
+		"NET_RT_STATS":                                 true,
+		"NET_RT_TABLE":                                 true,
+		"NET_RT_TRASH":                                 true,
+		"NLA_ALIGNTO":                                  true,
+		"NLA_F_NESTED":                                 true,
+		"NLA_F_NET_BYTEORDER":                          true,
+		"NLA_HDRLEN":                                   true,
+		"NLMSG_ALIGNTO":                                true,
+		"NLMSG_DONE":                                   true,
+		"NLMSG_ERROR":                                  true,
+		"NLMSG_HDRLEN":                                 true,
+		"NLMSG_MIN_TYPE":                               true,
+		"NLMSG_NOOP":                                   true,
+		"NLMSG_OVERRUN":                                true,
+		"NLM_F_ACK":                                    true,
+		"NLM_F_APPEND":                                 true,
+		"NLM_F_ATOMIC":                                 true,
+		"NLM_F_CREATE":                                 true,
+		"NLM_F_DUMP":                                   true,
+		"NLM_F_ECHO":                                   true,
+		"NLM_F_EXCL":                                   true,
+		"NLM_F_MATCH":                                  true,
+		"NLM_F_MULTI":                                  true,
+		"NLM_F_REPLACE":                                true,
+		"NLM_F_REQUEST":                                true,
+		"NLM_F_ROOT":                                   true,
+		"NOFLSH":                                       true,
+		"NOTE_ABSOLUTE":                                true,
+		"NOTE_ATTRIB":                                  true,
+		"NOTE_CHILD":                                   true,
+		"NOTE_DELETE":                                  true,
+		"NOTE_EOF":                                     true,
+		"NOTE_EXEC":                                    true,
+		"NOTE_EXIT":                                    true,
+		"NOTE_EXITSTATUS":                              true,
+		"NOTE_EXTEND":                                  true,
+		"NOTE_FFAND":                                   true,
+		"NOTE_FFCOPY":                                  true,
+		"NOTE_FFCTRLMASK":                              true,
+		"NOTE_FFLAGSMASK":                              true,
+		"NOTE_FFNOP":                                   true,
+		"NOTE_FFOR":                                    true,
+		"NOTE_FORK":                                    true,
+		"NOTE_LINK":                                    true,
+		"NOTE_LOWAT":                                   true,
+		"NOTE_NONE":                                    true,
+		"NOTE_NSECONDS":                                true,
+		"NOTE_PCTRLMASK":                               true,
+		"NOTE_PDATAMASK":                               true,
+		"NOTE_REAP":                                    true,
+		"NOTE_RENAME":                                  true,
+		"NOTE_RESOURCEEND":                             true,
+		"NOTE_REVOKE":                                  true,
+		"NOTE_SECONDS":                                 true,
+		"NOTE_SIGNAL":                                  true,
+		"NOTE_TRACK":                                   true,
+		"NOTE_TRACKERR":                                true,
+		"NOTE_TRIGGER":                                 true,
+		"NOTE_TRUNCATE":                                true,
+		"NOTE_USECONDS":                                true,
+		"NOTE_VM_ERROR":                                true,
+		"NOTE_VM_PRESSURE":                             true,
+		"NOTE_VM_PRESSURE_SUDDEN_TERMINATE":            true,
+		"NOTE_VM_PRESSURE_TERMINATE":                   true,
+		"NOTE_WRITE":                                   true,
+		"NameCanonical":                                true,
+		"NameCanonicalEx":                              true,
+		"NameDisplay":                                  true,
+		"NameDnsDomain":                                true,
+		"NameFullyQualifiedDN":                         true,
+		"NameSamCompatible":                            true,
+		"NameServicePrincipal":                         true,
+		"NameUniqueId":                                 true,
+		"NameUnknown":                                  true,
+		"NameUserPrincipal":                            true,
+		"Nanosleep":                                    true,
+		"NetApiBufferFree":                             true,
+		"NetGetJoinInformation":                        true,
+		"NetSetupDomainName":                           true,
+		"NetSetupUnjoined":                             true,
+		"NetSetupUnknownStatus":                        true,
+		"NetSetupWorkgroupName":                        true,
+		"NetUserGetInfo":                               true,
+		"NetlinkMessage":                               true,
+		"NetlinkRIB":                                   true,
+		"NetlinkRouteAttr":                             true,
+		"NetlinkRouteRequest":                          true,
+		"NewCallback":                                  true,
+		"NewCallbackCDecl":                             true,
+		"NewLazyDLL":                                   true,
+		"NlAttr":                                       true,
+		"NlMsgerr":                                     true,
+		"NlMsghdr":                                     true,
+		"NsecToFiletime":                               true,
+		"NsecToTimespec":                               true,
+		"NsecToTimeval":                                true,
+		"Ntohs":                                        true,
+		"OCRNL":                                        true,
+		"OFDEL":                                        true,
+		"OFILL":                                        true,
+		"OFIOGETBMAP":                                  true,
+		"OID_PKIX_KP_SERVER_AUTH":                      true,
+		"OID_SERVER_GATED_CRYPTO":                      true,
+		"OID_SGC_NETSCAPE":                             true,
+		"OLCUC":                                        true,
+		"ONLCR":                                        true,
+		"ONLRET":                                       true,
+		"ONOCR":                                        true,
+		"ONOEOT":                                       true,
+		"OPEN_ALWAYS":                                  true,
+		"OPEN_EXISTING":                                true,
+		"OPOST":                                        true,
+		"O_ACCMODE":                                    true,
+		"O_ALERT":                                      true,
+		"O_ALT_IO":                                     true,
+		"O_APPEND":                                     true,
+		"O_ASYNC":                                      true,
+		"O_CLOEXEC":                                    true,
+		"O_CREAT":                                      true,
+		"O_DIRECT":                                     true,
+		"O_DIRECTORY":                                  true,
+		"O_DSYNC":                                      true,
+		"O_EVTONLY":                                    true,
+		"O_EXCL":                                       true,
+		"O_EXEC":                                       true,
+		"O_EXLOCK":                                     true,
+		"O_FSYNC":                                      true,
+		"O_LARGEFILE":                                  true,
+		"O_NDELAY":                                     true,
+		"O_NOATIME":                                    true,
+		"O_NOCTTY":                                     true,
+		"O_NOFOLLOW":                                   true,
+		"O_NONBLOCK":                                   true,
+		"O_NOSIGPIPE":                                  true,
+		"O_POPUP":                                      true,
+		"O_RDONLY":                                     true,
+		"O_RDWR":                                       true,
+		"O_RSYNC":                                      true,
+		"O_SHLOCK":                                     true,
+		"O_SYMLINK":                                    true,
+		"O_SYNC":                                       true,
+		"O_TRUNC":                                      true,
+		"O_TTY_INIT":                                   true,
+		"O_WRONLY":                                     true,
+		"Open":                                         true,
+		"OpenCurrentProcessToken":                      true,
+		"OpenProcess":                                  true,
+		"OpenProcessToken":                             true,
+		"Openat":                                       true,
+		"Overlapped":                                   true,
+		"PACKET_ADD_MEMBERSHIP":                        true,
+		"PACKET_BROADCAST":                             true,
+		"PACKET_DROP_MEMBERSHIP":                       true,
+		"PACKET_FASTROUTE":                             true,
+		"PACKET_HOST":                                  true,
+		"PACKET_LOOPBACK":                              true,
+		"PACKET_MR_ALLMULTI":                           true,
+		"PACKET_MR_MULTICAST":                          true,
+		"PACKET_MR_PROMISC":                            true,
+		"PACKET_MULTICAST":                             true,
+		"PACKET_OTHERHOST":                             true,
+		"PACKET_OUTGOING":                              true,
+		"PACKET_RECV_OUTPUT":                           true,
+		"PACKET_RX_RING":                               true,
+		"PACKET_STATISTICS":                            true,
+		"PAGE_EXECUTE_READ":                            true,
+		"PAGE_EXECUTE_READWRITE":                       true,
+		"PAGE_EXECUTE_WRITECOPY":                       true,
+		"PAGE_READONLY":                                true,
+		"PAGE_READWRITE":                               true,
+		"PAGE_WRITECOPY":                               true,
+		"PARENB":                                       true,
+		"PARMRK":                                       true,
+		"PARODD":                                       true,
+		"PENDIN":                                       true,
+		"PFL_HIDDEN":                                   true,
+		"PFL_MATCHES_PROTOCOL_ZERO":                    true,
+		"PFL_MULTIPLE_PROTO_ENTRIES":                   true,
+		"PFL_NETWORKDIRECT_PROVIDER":                   true,
+		"PFL_RECOMMENDED_PROTO_ENTRY":                  true,
+		"PF_FLUSH":                                     true,
+		"PKCS_7_ASN_ENCODING":                          true,
+		"PMC5_PIPELINE_FLUSH":                          true,
+		"PRIO_PGRP":                                    true,
+		"PRIO_PROCESS":                                 true,
+		"PRIO_USER":                                    true,
+		"PRI_IOFLUSH":                                  true,
+		"PROCESS_QUERY_INFORMATION":                    true,
+		"PROCESS_TERMINATE":                            true,
+		"PROT_EXEC":                                    true,
+		"PROT_GROWSDOWN":                               true,
+		"PROT_GROWSUP":                                 true,
+		"PROT_NONE":                                    true,
+		"PROT_READ":                                    true,
+		"PROT_WRITE":                                   true,
+		"PROV_DH_SCHANNEL":                             true,
+		"PROV_DSS":                                     true,
+		"PROV_DSS_DH":                                  true,
+		"PROV_EC_ECDSA_FULL":                           true,
+		"PROV_EC_ECDSA_SIG":                            true,
+		"PROV_EC_ECNRA_FULL":                           true,
+		"PROV_EC_ECNRA_SIG":                            true,
+		"PROV_FORTEZZA":                                true,
+		"PROV_INTEL_SEC":                               true,
+		"PROV_MS_EXCHANGE":                             true,
+		"PROV_REPLACE_OWF":                             true,
+		"PROV_RNG":                                     true,
+		"PROV_RSA_AES":                                 true,
+		"PROV_RSA_FULL":                                true,
+		"PROV_RSA_SCHANNEL":                            true,
+		"PROV_RSA_SIG":                                 true,
+		"PROV_SPYRUS_LYNKS":                            true,
+		"PROV_SSL":                                     true,
+		"PR_CAPBSET_DROP":                              true,
+		"PR_CAPBSET_READ":                              true,
+		"PR_CLEAR_SECCOMP_FILTER":                      true,
+		"PR_ENDIAN_BIG":                                true,
+		"PR_ENDIAN_LITTLE":                             true,
+		"PR_ENDIAN_PPC_LITTLE":                         true,
+		"PR_FPEMU_NOPRINT":                             true,
+		"PR_FPEMU_SIGFPE":                              true,
+		"PR_FP_EXC_ASYNC":                              true,
+		"PR_FP_EXC_DISABLED":                           true,
+		"PR_FP_EXC_DIV":                                true,
+		"PR_FP_EXC_INV":                                true,
+		"PR_FP_EXC_NONRECOV":                           true,
+		"PR_FP_EXC_OVF":                                true,
+		"PR_FP_EXC_PRECISE":                            true,
+		"PR_FP_EXC_RES":                                true,
+		"PR_FP_EXC_SW_ENABLE":                          true,
+		"PR_FP_EXC_UND":                                true,
+		"PR_GET_DUMPABLE":                              true,
+		"PR_GET_ENDIAN":                                true,
+		"PR_GET_FPEMU":                                 true,
+		"PR_GET_FPEXC":                                 true,
+		"PR_GET_KEEPCAPS":                              true,
+		"PR_GET_NAME":                                  true,
+		"PR_GET_PDEATHSIG":                             true,
+		"PR_GET_SECCOMP":                               true,
+		"PR_GET_SECCOMP_FILTER":                        true,
+		"PR_GET_SECUREBITS":                            true,
+		"PR_GET_TIMERSLACK":                            true,
+		"PR_GET_TIMING":                                true,
+		"PR_GET_TSC":                                   true,
+		"PR_GET_UNALIGN":                               true,
+		"PR_MCE_KILL":                                  true,
+		"PR_MCE_KILL_CLEAR":                            true,
+		"PR_MCE_KILL_DEFAULT":                          true,
+		"PR_MCE_KILL_EARLY":                            true,
+		"PR_MCE_KILL_GET":                              true,
+		"PR_MCE_KILL_LATE":                             true,
+		"PR_MCE_KILL_SET":                              true,
+		"PR_SECCOMP_FILTER_EVENT":                      true,
+		"PR_SECCOMP_FILTER_SYSCALL":                    true,
+		"PR_SET_DUMPABLE":                              true,
+		"PR_SET_ENDIAN":                                true,
+		"PR_SET_FPEMU":                                 true,
+		"PR_SET_FPEXC":                                 true,
+		"PR_SET_KEEPCAPS":                              true,
+		"PR_SET_NAME":                                  true,
+		"PR_SET_PDEATHSIG":                             true,
+		"PR_SET_PTRACER":                               true,
+		"PR_SET_SECCOMP":                               true,
+		"PR_SET_SECCOMP_FILTER":                        true,
+		"PR_SET_SECUREBITS":                            true,
+		"PR_SET_TIMERSLACK":                            true,
+		"PR_SET_TIMING":                                true,
+		"PR_SET_TSC":                                   true,
+		"PR_SET_UNALIGN":                               true,
+		"PR_TASK_PERF_EVENTS_DISABLE":                  true,
+		"PR_TASK_PERF_EVENTS_ENABLE":                   true,
+		"PR_TIMING_STATISTICAL":                        true,
+		"PR_TIMING_TIMESTAMP":                          true,
+		"PR_TSC_ENABLE":                                true,
+		"PR_TSC_SIGSEGV":                               true,
+		"PR_UNALIGN_NOPRINT":                           true,
+		"PR_UNALIGN_SIGBUS":                            true,
+		"PTRACE_ARCH_PRCTL":                            true,
+		"PTRACE_ATTACH":                                true,
+		"PTRACE_CONT":                                  true,
+		"PTRACE_DETACH":                                true,
+		"PTRACE_EVENT_CLONE":                           true,
+		"PTRACE_EVENT_EXEC":                            true,
+		"PTRACE_EVENT_EXIT":                            true,
+		"PTRACE_EVENT_FORK":                            true,
+		"PTRACE_EVENT_VFORK":                           true,
+		"PTRACE_EVENT_VFORK_DONE":                      true,
+		"PTRACE_GETCRUNCHREGS":                         true,
+		"PTRACE_GETEVENTMSG":                           true,
+		"PTRACE_GETFPREGS":                             true,
+		"PTRACE_GETFPXREGS":                            true,
+		"PTRACE_GETHBPREGS":                            true,
+		"PTRACE_GETREGS":                               true,
+		"PTRACE_GETREGSET":                             true,
+		"PTRACE_GETSIGINFO":                            true,
+		"PTRACE_GETVFPREGS":                            true,
+		"PTRACE_GETWMMXREGS":                           true,
+		"PTRACE_GET_THREAD_AREA":                       true,
+		"PTRACE_KILL":                                  true,
+		"PTRACE_OLDSETOPTIONS":                         true,
+		"PTRACE_O_MASK":                                true,
+		"PTRACE_O_TRACECLONE":                          true,
+		"PTRACE_O_TRACEEXEC":                           true,
+		"PTRACE_O_TRACEEXIT":                           true,
+		"PTRACE_O_TRACEFORK":                           true,
+		"PTRACE_O_TRACESYSGOOD":                        true,
+		"PTRACE_O_TRACEVFORK":                          true,
+		"PTRACE_O_TRACEVFORKDONE":                      true,
+		"PTRACE_PEEKDATA":                              true,
+		"PTRACE_PEEKTEXT":                              true,
+		"PTRACE_PEEKUSR":                               true,
+		"PTRACE_POKEDATA":                              true,
+		"PTRACE_POKETEXT":                              true,
+		"PTRACE_POKEUSR":                               true,
+		"PTRACE_SETCRUNCHREGS":                         true,
+		"PTRACE_SETFPREGS":                             true,
+		"PTRACE_SETFPXREGS":                            true,
+		"PTRACE_SETHBPREGS":                            true,
+		"PTRACE_SETOPTIONS":                            true,
+		"PTRACE_SETREGS":                               true,
+		"PTRACE_SETREGSET":                             true,
+		"PTRACE_SETSIGINFO":                            true,
+		"PTRACE_SETVFPREGS":                            true,
+		"PTRACE_SETWMMXREGS":                           true,
+		"PTRACE_SET_SYSCALL":                           true,
+		"PTRACE_SET_THREAD_AREA":                       true,
+		"PTRACE_SINGLEBLOCK":                           true,
+		"PTRACE_SINGLESTEP":                            true,
+		"PTRACE_SYSCALL":                               true,
+		"PTRACE_SYSEMU":                                true,
+		"PTRACE_SYSEMU_SINGLESTEP":                     true,
+		"PTRACE_TRACEME":                               true,
+		"PT_ATTACH":                                    true,
+		"PT_ATTACHEXC":                                 true,
+		"PT_CONTINUE":                                  true,
+		"PT_DATA_ADDR":                                 true,
+		"PT_DENY_ATTACH":                               true,
+		"PT_DETACH":                                    true,
+		"PT_FIRSTMACH":                                 true,
+		"PT_FORCEQUOTA":                                true,
+		"PT_KILL":                                      true,
+		"PT_MASK":                                      true,
+		"PT_READ_D":                                    true,
+		"PT_READ_I":                                    true,
+		"PT_READ_U":                                    true,
+		"PT_SIGEXC":                                    true,
+		"PT_STEP":                                      true,
+		"PT_TEXT_ADDR":                                 true,
+		"PT_TEXT_END_ADDR":                             true,
+		"PT_THUPDATE":                                  true,
+		"PT_TRACE_ME":                                  true,
+		"PT_WRITE_D":                                   true,
+		"PT_WRITE_I":                                   true,
+		"PT_WRITE_U":                                   true,
+		"ParseDirent":                                  true,
+		"ParseNetlinkMessage":                          true,
+		"ParseNetlinkRouteAttr":                        true,
+		"ParseRoutingMessage":                          true,
+		"ParseRoutingSockaddr":                         true,
+		"ParseSocketControlMessage":                    true,
+		"ParseUnixCredentials":                         true,
+		"ParseUnixRights":                              true,
+		"PathMax":                                      true,
+		"Pathconf":                                     true,
+		"Pause":                                        true,
+		"Pipe":                                         true,
+		"Pipe2":                                        true,
+		"PivotRoot":                                    true,
+		"Pointer":                                      true,
+		"PostQueuedCompletionStatus":                   true,
+		"Pread":                                        true,
+		"Proc":                                         true,
+		"ProcAttr":                                     true,
+		"Process32First":                               true,
+		"Process32Next":                                true,
+		"ProcessEntry32":                               true,
+		"ProcessInformation":                           true,
+		"Protoent":                                     true,
+		"PtraceAttach":                                 true,
+		"PtraceCont":                                   true,
+		"PtraceDetach":                                 true,
+		"PtraceGetEventMsg":                            true,
+		"PtraceGetRegs":                                true,
+		"PtracePeekData":                               true,
+		"PtracePeekText":                               true,
+		"PtracePokeData":                               true,
+		"PtracePokeText":                               true,
+		"PtraceRegs":                                   true,
+		"PtraceSetOptions":                             true,
+		"PtraceSetRegs":                                true,
+		"PtraceSingleStep":                             true,
+		"PtraceSyscall":                                true,
+		"Pwrite":                                       true,
+		"REG_BINARY":                                   true,
+		"REG_DWORD":                                    true,
+		"REG_DWORD_BIG_ENDIAN":                         true,
+		"REG_DWORD_LITTLE_ENDIAN":                      true,
+		"REG_EXPAND_SZ":                                true,
+		"REG_FULL_RESOURCE_DESCRIPTOR":                 true,
+		"REG_LINK":                                     true,
+		"REG_MULTI_SZ":                                 true,
+		"REG_NONE":                                     true,
+		"REG_QWORD":                                    true,
+		"REG_QWORD_LITTLE_ENDIAN":                      true,
+		"REG_RESOURCE_LIST":                            true,
+		"REG_RESOURCE_REQUIREMENTS_LIST":               true,
+		"REG_SZ":                                       true,
+		"RLIMIT_AS":                                    true,
+		"RLIMIT_CORE":                                  true,
+		"RLIMIT_CPU":                                   true,
+		"RLIMIT_DATA":                                  true,
+		"RLIMIT_FSIZE":                                 true,
+		"RLIMIT_NOFILE":                                true,
+		"RLIMIT_STACK":                                 true,
+		"RLIM_INFINITY":                                true,
+		"RTAX_ADVMSS":                                  true,
+		"RTAX_AUTHOR":                                  true,
+		"RTAX_BRD":                                     true,
+		"RTAX_CWND":                                    true,
+		"RTAX_DST":                                     true,
+		"RTAX_FEATURES":                                true,
+		"RTAX_FEATURE_ALLFRAG":                         true,
+		"RTAX_FEATURE_ECN":                             true,
+		"RTAX_FEATURE_SACK":                            true,
+		"RTAX_FEATURE_TIMESTAMP":                       true,
+		"RTAX_GATEWAY":                                 true,
+		"RTAX_GENMASK":                                 true,
+		"RTAX_HOPLIMIT":                                true,
+		"RTAX_IFA":                                     true,
+		"RTAX_IFP":                                     true,
+		"RTAX_INITCWND":                                true,
+		"RTAX_INITRWND":                                true,
+		"RTAX_LABEL":                                   true,
+		"RTAX_LOCK":                                    true,
+		"RTAX_MAX":                                     true,
+		"RTAX_MTU":                                     true,
+		"RTAX_NETMASK":                                 true,
+		"RTAX_REORDERING":                              true,
+		"RTAX_RTO_MIN":                                 true,
+		"RTAX_RTT":                                     true,
+		"RTAX_RTTVAR":                                  true,
+		"RTAX_SRC":                                     true,
+		"RTAX_SRCMASK":                                 true,
+		"RTAX_SSTHRESH":                                true,
+		"RTAX_TAG":                                     true,
+		"RTAX_UNSPEC":                                  true,
+		"RTAX_WINDOW":                                  true,
+		"RTA_ALIGNTO":                                  true,
+		"RTA_AUTHOR":                                   true,
+		"RTA_BRD":                                      true,
+		"RTA_CACHEINFO":                                true,
+		"RTA_DST":                                      true,
+		"RTA_FLOW":                                     true,
+		"RTA_GATEWAY":                                  true,
+		"RTA_GENMASK":                                  true,
+		"RTA_IFA":                                      true,
+		"RTA_IFP":                                      true,
+		"RTA_IIF":                                      true,
+		"RTA_LABEL":                                    true,
+		"RTA_MAX":                                      true,
+		"RTA_METRICS":                                  true,
+		"RTA_MULTIPATH":                                true,
+		"RTA_NETMASK":                                  true,
+		"RTA_OIF":                                      true,
+		"RTA_PREFSRC":                                  true,
+		"RTA_PRIORITY":                                 true,
+		"RTA_SRC":                                      true,
+		"RTA_SRCMASK":                                  true,
+		"RTA_TABLE":                                    true,
+		"RTA_TAG":                                      true,
+		"RTA_UNSPEC":                                   true,
+		"RTCF_DIRECTSRC":                               true,
+		"RTCF_DOREDIRECT":                              true,
+		"RTCF_LOG":                                     true,
+		"RTCF_MASQ":                                    true,
+		"RTCF_NAT":                                     true,
+		"RTCF_VALVE":                                   true,
+		"RTF_ADDRCLASSMASK":                            true,
+		"RTF_ADDRCONF":                                 true,
+		"RTF_ALLONLINK":                                true,
+		"RTF_ANNOUNCE":                                 true,
+		"RTF_BLACKHOLE":                                true,
+		"RTF_BROADCAST":                                true,
+		"RTF_CACHE":                                    true,
+		"RTF_CLONED":                                   true,
+		"RTF_CLONING":                                  true,
+		"RTF_CONDEMNED":                                true,
+		"RTF_DEFAULT":                                  true,
+		"RTF_DELCLONE":                                 true,
+		"RTF_DONE":                                     true,
+		"RTF_DYNAMIC":                                  true,
+		"RTF_FLOW":                                     true,
+		"RTF_FMASK":                                    true,
+		"RTF_GATEWAY":                                  true,
+		"RTF_GWFLAG_COMPAT":                            true,
+		"RTF_HOST":                                     true,
+		"RTF_IFREF":                                    true,
+		"RTF_IFSCOPE":                                  true,
+		"RTF_INTERFACE":                                true,
+		"RTF_IRTT":                                     true,
+		"RTF_LINKRT":                                   true,
+		"RTF_LLDATA":                                   true,
+		"RTF_LLINFO":                                   true,
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+		"RTF_MASK":                                     true,
+		"RTF_MODIFIED":                                 true,
+		"RTF_MPATH":                                    true,
+		"RTF_MPLS":                                     true,
+		"RTF_MSS":                                      true,
+		"RTF_MTU":                                      true,
+		"RTF_MULTICAST":                                true,
+		"RTF_NAT":                                      true,
+		"RTF_NOFORWARD":                                true,
+		"RTF_NONEXTHOP":                                true,
+		"RTF_NOPMTUDISC":                               true,
+		"RTF_PERMANENT_ARP":                            true,
+		"RTF_PINNED":                                   true,
+		"RTF_POLICY":                                   true,
+		"RTF_PRCLONING":                                true,
+		"RTF_PROTO1":                                   true,
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+		"RTF_PROTO3":                                   true,
+		"RTF_REINSTATE":                                true,
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+		"RTF_RNH_LOCKED":                               true,
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+		"RTF_USETRAILERS":                              true,
+		"RTF_WASCLONED":                                true,
+		"RTF_WINDOW":                                   true,
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+		"RTM_ADD":                                      true,
+		"RTM_BASE":                                     true,
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+		"RTM_CHGADDR":                                  true,
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+		"RTM_DELADDR":                                  true,
+		"RTM_DELADDRLABEL":                             true,
+		"RTM_DELETE":                                   true,
+		"RTM_DELLINK":                                  true,
+		"RTM_DELMADDR":                                 true,
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+		"RTM_DELQDISC":                                 true,
+		"RTM_DELROUTE":                                 true,
+		"RTM_DELRULE":                                  true,
+		"RTM_DELTCLASS":                                true,
+		"RTM_DELTFILTER":                               true,
+		"RTM_DESYNC":                                   true,
+		"RTM_F_CLONED":                                 true,
+		"RTM_F_EQUALIZE":                               true,
+		"RTM_F_NOTIFY":                                 true,
+		"RTM_F_PREFIX":                                 true,
+		"RTM_GET":                                      true,
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+		"RTM_GETACTION":                                true,
+		"RTM_GETADDR":                                  true,
+		"RTM_GETADDRLABEL":                             true,
+		"RTM_GETANYCAST":                               true,
+		"RTM_GETDCB":                                   true,
+		"RTM_GETLINK":                                  true,
+		"RTM_GETMULTICAST":                             true,
+		"RTM_GETNEIGH":                                 true,
+		"RTM_GETNEIGHTBL":                              true,
+		"RTM_GETQDISC":                                 true,
+		"RTM_GETROUTE":                                 true,
+		"RTM_GETRULE":                                  true,
+		"RTM_GETTCLASS":                                true,
+		"RTM_GETTFILTER":                               true,
+		"RTM_IEEE80211":                                true,
+		"RTM_IFANNOUNCE":                               true,
+		"RTM_IFINFO":                                   true,
+		"RTM_IFINFO2":                                  true,
+		"RTM_LLINFO_UPD":                               true,
+		"RTM_LOCK":                                     true,
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+		"RTM_NEWACTION":                                true,
+		"RTM_NEWADDR":                                  true,
+		"RTM_NEWADDRLABEL":                             true,
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+		"RTM_NEWMADDR":                                 true,
+		"RTM_NEWMADDR2":                                true,
+		"RTM_NEWNDUSEROPT":                             true,
+		"RTM_NEWNEIGH":                                 true,
+		"RTM_NEWNEIGHTBL":                              true,
+		"RTM_NEWPREFIX":                                true,
+		"RTM_NEWQDISC":                                 true,
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+		"RTM_NEWRULE":                                  true,
+		"RTM_NEWTCLASS":                                true,
+		"RTM_NEWTFILTER":                               true,
+		"RTM_NR_FAMILIES":                              true,
+		"RTM_NR_MSGTYPES":                              true,
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+		"RTM_OLDDEL":                                   true,
+		"RTM_OOIFINFO":                                 true,
+		"RTM_REDIRECT":                                 true,
+		"RTM_RESOLVE":                                  true,
+		"RTM_RTTUNIT":                                  true,
+		"RTM_SETDCB":                                   true,
+		"RTM_SETGATE":                                  true,
+		"RTM_SETLINK":                                  true,
+		"RTM_SETNEIGHTBL":                              true,
+		"RTM_VERSION":                                  true,
+		"RTNH_ALIGNTO":                                 true,
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+		"RTNH_F_ONLINK":                                true,
+		"RTNH_F_PERVASIVE":                             true,
+		"RTNLGRP_IPV4_IFADDR":                          true,
+		"RTNLGRP_IPV4_MROUTE":                          true,
+		"RTNLGRP_IPV4_ROUTE":                           true,
+		"RTNLGRP_IPV4_RULE":                            true,
+		"RTNLGRP_IPV6_IFADDR":                          true,
+		"RTNLGRP_IPV6_IFINFO":                          true,
+		"RTNLGRP_IPV6_MROUTE":                          true,
+		"RTNLGRP_IPV6_PREFIX":                          true,
+		"RTNLGRP_IPV6_ROUTE":                           true,
+		"RTNLGRP_IPV6_RULE":                            true,
+		"RTNLGRP_LINK":                                 true,
+		"RTNLGRP_ND_USEROPT":                           true,
+		"RTNLGRP_NEIGH":                                true,
+		"RTNLGRP_NONE":                                 true,
+		"RTNLGRP_NOTIFY":                               true,
+		"RTNLGRP_TC":                                   true,
+		"RTN_ANYCAST":                                  true,
+		"RTN_BLACKHOLE":                                true,
+		"RTN_BROADCAST":                                true,
+		"RTN_LOCAL":                                    true,
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+		"RTN_MULTICAST":                                true,
+		"RTN_NAT":                                      true,
+		"RTN_PROHIBIT":                                 true,
+		"RTN_THROW":                                    true,
+		"RTN_UNICAST":                                  true,
+		"RTN_UNREACHABLE":                              true,
+		"RTN_UNSPEC":                                   true,
+		"RTN_XRESOLVE":                                 true,
+		"RTPROT_BIRD":                                  true,
+		"RTPROT_BOOT":                                  true,
+		"RTPROT_DHCP":                                  true,
+		"RTPROT_DNROUTED":                              true,
+		"RTPROT_GATED":                                 true,
+		"RTPROT_KERNEL":                                true,
+		"RTPROT_MRT":                                   true,
+		"RTPROT_NTK":                                   true,
+		"RTPROT_RA":                                    true,
+		"RTPROT_REDIRECT":                              true,
+		"RTPROT_STATIC":                                true,
+		"RTPROT_UNSPEC":                                true,
+		"RTPROT_XORP":                                  true,
+		"RTPROT_ZEBRA":                                 true,
+		"RTV_EXPIRE":                                   true,
+		"RTV_HOPCOUNT":                                 true,
+		"RTV_MTU":                                      true,
+		"RTV_RPIPE":                                    true,
+		"RTV_RTT":                                      true,
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+		"RT_CACHING_CONTEXT":                           true,
+		"RT_CLASS_DEFAULT":                             true,
+		"RT_CLASS_LOCAL":                               true,
+		"RT_CLASS_MAIN":                                true,
+		"RT_CLASS_MAX":                                 true,
+		"RT_CLASS_UNSPEC":                              true,
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+		"RT_NORTREF":                                   true,
+		"RT_SCOPE_HOST":                                true,
+		"RT_SCOPE_LINK":                                true,
+		"RT_SCOPE_NOWHERE":                             true,
+		"RT_SCOPE_SITE":                                true,
+		"RT_SCOPE_UNIVERSE":                            true,
+		"RT_TABLEID_MAX":                               true,
+		"RT_TABLE_COMPAT":                              true,
+		"RT_TABLE_DEFAULT":                             true,
+		"RT_TABLE_LOCAL":                               true,
+		"RT_TABLE_MAIN":                                true,
+		"RT_TABLE_MAX":                                 true,
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+		"RUSAGE_CHILDREN":                              true,
+		"RUSAGE_SELF":                                  true,
+		"RUSAGE_THREAD":                                true,
+		"Radvisory_t":                                  true,
+		"RawConn":                                      true,
+		"RawSockaddr":                                  true,
+		"RawSockaddrAny":                               true,
+		"RawSockaddrDatalink":                          true,
+		"RawSockaddrInet4":                             true,
+		"RawSockaddrInet6":                             true,
+		"RawSockaddrLinklayer":                         true,
+		"RawSockaddrNetlink":                           true,
+		"RawSockaddrUnix":                              true,
+		"RawSyscall":                                   true,
+		"RawSyscall6":                                  true,
+		"Read":                                         true,
+		"ReadConsole":                                  true,
+		"ReadDirectoryChanges":                         true,
+		"ReadDirent":                                   true,
+		"ReadFile":                                     true,
+		"Readlink":                                     true,
+		"Reboot":                                       true,
+		"Recvfrom":                                     true,
+		"Recvmsg":                                      true,
+		"RegCloseKey":                                  true,
+		"RegEnumKeyEx":                                 true,
+		"RegOpenKeyEx":                                 true,
+		"RegQueryInfoKey":                              true,
+		"RegQueryValueEx":                              true,
+		"RemoveDirectory":                              true,
+		"Removexattr":                                  true,
+		"Rename":                                       true,
+		"Renameat":                                     true,
+		"Revoke":                                       true,
+		"Rlimit":                                       true,
+		"Rmdir":                                        true,
+		"RouteMessage":                                 true,
+		"RouteRIB":                                     true,
+		"RtAttr":                                       true,
+		"RtGenmsg":                                     true,
+		"RtMetrics":                                    true,
+		"RtMsg":                                        true,
+		"RtMsghdr":                                     true,
+		"RtNexthop":                                    true,
+		"Rusage":                                       true,
+		"SCM_BINTIME":                                  true,
+		"SCM_CREDENTIALS":                              true,
+		"SCM_CREDS":                                    true,
+		"SCM_RIGHTS":                                   true,
+		"SCM_TIMESTAMP":                                true,
+		"SCM_TIMESTAMPING":                             true,
+		"SCM_TIMESTAMPNS":                              true,
+		"SCM_TIMESTAMP_MONOTONIC":                      true,
+		"SHUT_RD":                                      true,
+		"SHUT_RDWR":                                    true,
+		"SHUT_WR":                                      true,
+		"SID":                                          true,
+		"SIDAndAttributes":                             true,
+		"SIGABRT":                                      true,
+		"SIGALRM":                                      true,
+		"SIGBUS":                                       true,
+		"SIGCHLD":                                      true,
+		"SIGCLD":                                       true,
+		"SIGCONT":                                      true,
+		"SIGEMT":                                       true,
+		"SIGFPE":                                       true,
+		"SIGHUP":                                       true,
+		"SIGILL":                                       true,
+		"SIGINFO":                                      true,
+		"SIGINT":                                       true,
+		"SIGIO":                                        true,
+		"SIGIOT":                                       true,
+		"SIGKILL":                                      true,
+		"SIGLIBRT":                                     true,
+		"SIGLWP":                                       true,
+		"SIGPIPE":                                      true,
+		"SIGPOLL":                                      true,
+		"SIGPROF":                                      true,
+		"SIGPWR":                                       true,
+		"SIGQUIT":                                      true,
+		"SIGSEGV":                                      true,
+		"SIGSTKFLT":                                    true,
+		"SIGSTOP":                                      true,
+		"SIGSYS":                                       true,
+		"SIGTERM":                                      true,
+		"SIGTHR":                                       true,
+		"SIGTRAP":                                      true,
+		"SIGTSTP":                                      true,
+		"SIGTTIN":                                      true,
+		"SIGTTOU":                                      true,
+		"SIGUNUSED":                                    true,
+		"SIGURG":                                       true,
+		"SIGUSR1":                                      true,
+		"SIGUSR2":                                      true,
+		"SIGVTALRM":                                    true,
+		"SIGWINCH":                                     true,
+		"SIGXCPU":                                      true,
+		"SIGXFSZ":                                      true,
+		"SIOCADDDLCI":                                  true,
+		"SIOCADDMULTI":                                 true,
+		"SIOCADDRT":                                    true,
+		"SIOCAIFADDR":                                  true,
+		"SIOCAIFGROUP":                                 true,
+		"SIOCALIFADDR":                                 true,
+		"SIOCARPIPLL":                                  true,
+		"SIOCATMARK":                                   true,
+		"SIOCAUTOADDR":                                 true,
+		"SIOCAUTONETMASK":                              true,
+		"SIOCBRDGADD":                                  true,
+		"SIOCBRDGADDS":                                 true,
+		"SIOCBRDGARL":                                  true,
+		"SIOCBRDGDADDR":                                true,
+		"SIOCBRDGDEL":                                  true,
+		"SIOCBRDGDELS":                                 true,
+		"SIOCBRDGFLUSH":                                true,
+		"SIOCBRDGFRL":                                  true,
+		"SIOCBRDGGCACHE":                               true,
+		"SIOCBRDGGFD":                                  true,
+		"SIOCBRDGGHT":                                  true,
+		"SIOCBRDGGIFFLGS":                              true,
+		"SIOCBRDGGMA":                                  true,
+		"SIOCBRDGGPARAM":                               true,
+		"SIOCBRDGGPRI":                                 true,
+		"SIOCBRDGGRL":                                  true,
+		"SIOCBRDGGSIFS":                                true,
+		"SIOCBRDGGTO":                                  true,
+		"SIOCBRDGIFS":                                  true,
+		"SIOCBRDGRTS":                                  true,
+		"SIOCBRDGSADDR":                                true,
+		"SIOCBRDGSCACHE":                               true,
+		"SIOCBRDGSFD":                                  true,
+		"SIOCBRDGSHT":                                  true,
+		"SIOCBRDGSIFCOST":                              true,
+		"SIOCBRDGSIFFLGS":                              true,
+		"SIOCBRDGSIFPRIO":                              true,
+		"SIOCBRDGSMA":                                  true,
+		"SIOCBRDGSPRI":                                 true,
+		"SIOCBRDGSPROTO":                               true,
+		"SIOCBRDGSTO":                                  true,
+		"SIOCBRDGSTXHC":                                true,
+		"SIOCDARP":                                     true,
+		"SIOCDELDLCI":                                  true,
+		"SIOCDELMULTI":                                 true,
+		"SIOCDELRT":                                    true,
+		"SIOCDEVPRIVATE":                               true,
+		"SIOCDIFADDR":                                  true,
+		"SIOCDIFGROUP":                                 true,
+		"SIOCDIFPHYADDR":                               true,
+		"SIOCDLIFADDR":                                 true,
+		"SIOCDRARP":                                    true,
+		"SIOCGARP":                                     true,
+		"SIOCGDRVSPEC":                                 true,
+		"SIOCGETKALIVE":                                true,
+		"SIOCGETLABEL":                                 true,
+		"SIOCGETPFLOW":                                 true,
+		"SIOCGETPFSYNC":                                true,
+		"SIOCGETSGCNT":                                 true,
+		"SIOCGETVIFCNT":                                true,
+		"SIOCGETVLAN":                                  true,
+		"SIOCGHIWAT":                                   true,
+		"SIOCGIFADDR":                                  true,
+		"SIOCGIFADDRPREF":                              true,
+		"SIOCGIFALIAS":                                 true,
+		"SIOCGIFALTMTU":                                true,
+		"SIOCGIFASYNCMAP":                              true,
+		"SIOCGIFBOND":                                  true,
+		"SIOCGIFBR":                                    true,
+		"SIOCGIFBRDADDR":                               true,
+		"SIOCGIFCAP":                                   true,
+		"SIOCGIFCONF":                                  true,
+		"SIOCGIFCOUNT":                                 true,
+		"SIOCGIFDATA":                                  true,
+		"SIOCGIFDESCR":                                 true,
+		"SIOCGIFDEVMTU":                                true,
+		"SIOCGIFDLT":                                   true,
+		"SIOCGIFDSTADDR":                               true,
+		"SIOCGIFENCAP":                                 true,
+		"SIOCGIFFIB":                                   true,
+		"SIOCGIFFLAGS":                                 true,
+		"SIOCGIFGATTR":                                 true,
+		"SIOCGIFGENERIC":                               true,
+		"SIOCGIFGMEMB":                                 true,
+		"SIOCGIFGROUP":                                 true,
+		"SIOCGIFHARDMTU":                               true,
+		"SIOCGIFHWADDR":                                true,
+		"SIOCGIFINDEX":                                 true,
+		"SIOCGIFKPI":                                   true,
+		"SIOCGIFMAC":                                   true,
+		"SIOCGIFMAP":                                   true,
+		"SIOCGIFMEDIA":                                 true,
+		"SIOCGIFMEM":                                   true,
+		"SIOCGIFMETRIC":                                true,
+		"SIOCGIFMTU":                                   true,
+		"SIOCGIFNAME":                                  true,
+		"SIOCGIFNETMASK":                               true,
+		"SIOCGIFPDSTADDR":                              true,
+		"SIOCGIFPFLAGS":                                true,
+		"SIOCGIFPHYS":                                  true,
+		"SIOCGIFPRIORITY":                              true,
+		"SIOCGIFPSRCADDR":                              true,
+		"SIOCGIFRDOMAIN":                               true,
+		"SIOCGIFRTLABEL":                               true,
+		"SIOCGIFSLAVE":                                 true,
+		"SIOCGIFSTATUS":                                true,
+		"SIOCGIFTIMESLOT":                              true,
+		"SIOCGIFTXQLEN":                                true,
+		"SIOCGIFVLAN":                                  true,
+		"SIOCGIFWAKEFLAGS":                             true,
+		"SIOCGIFXFLAGS":                                true,
+		"SIOCGLIFADDR":                                 true,
+		"SIOCGLIFPHYADDR":                              true,
+		"SIOCGLIFPHYRTABLE":                            true,
+		"SIOCGLIFPHYTTL":                               true,
+		"SIOCGLINKSTR":                                 true,
+		"SIOCGLOWAT":                                   true,
+		"SIOCGPGRP":                                    true,
+		"SIOCGPRIVATE_0":                               true,
+		"SIOCGPRIVATE_1":                               true,
+		"SIOCGRARP":                                    true,
+		"SIOCGSPPPPARAMS":                              true,
+		"SIOCGSTAMP":                                   true,
+		"SIOCGSTAMPNS":                                 true,
+		"SIOCGVH":                                      true,
+		"SIOCGVNETID":                                  true,
+		"SIOCIFCREATE":                                 true,
+		"SIOCIFCREATE2":                                true,
+		"SIOCIFDESTROY":                                true,
+		"SIOCIFGCLONERS":                               true,
+		"SIOCINITIFADDR":                               true,
+		"SIOCPROTOPRIVATE":                             true,
+		"SIOCRSLVMULTI":                                true,
+		"SIOCRTMSG":                                    true,
+		"SIOCSARP":                                     true,
+		"SIOCSDRVSPEC":                                 true,
+		"SIOCSETKALIVE":                                true,
+		"SIOCSETLABEL":                                 true,
+		"SIOCSETPFLOW":                                 true,
+		"SIOCSETPFSYNC":                                true,
+		"SIOCSETVLAN":                                  true,
+		"SIOCSHIWAT":                                   true,
+		"SIOCSIFADDR":                                  true,
+		"SIOCSIFADDRPREF":                              true,
+		"SIOCSIFALTMTU":                                true,
+		"SIOCSIFASYNCMAP":                              true,
+		"SIOCSIFBOND":                                  true,
+		"SIOCSIFBR":                                    true,
+		"SIOCSIFBRDADDR":                               true,
+		"SIOCSIFCAP":                                   true,
+		"SIOCSIFDESCR":                                 true,
+		"SIOCSIFDSTADDR":                               true,
+		"SIOCSIFENCAP":                                 true,
+		"SIOCSIFFIB":                                   true,
+		"SIOCSIFFLAGS":                                 true,
+		"SIOCSIFGATTR":                                 true,
+		"SIOCSIFGENERIC":                               true,
+		"SIOCSIFHWADDR":                                true,
+		"SIOCSIFHWBROADCAST":                           true,
+		"SIOCSIFKPI":                                   true,
+		"SIOCSIFLINK":                                  true,
+		"SIOCSIFLLADDR":                                true,
+		"SIOCSIFMAC":                                   true,
+		"SIOCSIFMAP":                                   true,
+		"SIOCSIFMEDIA":                                 true,
+		"SIOCSIFMEM":                                   true,
+		"SIOCSIFMETRIC":                                true,
+		"SIOCSIFMTU":                                   true,
+		"SIOCSIFNAME":                                  true,
+		"SIOCSIFNETMASK":                               true,
+		"SIOCSIFPFLAGS":                                true,
+		"SIOCSIFPHYADDR":                               true,
+		"SIOCSIFPHYS":                                  true,
+		"SIOCSIFPRIORITY":                              true,
+		"SIOCSIFRDOMAIN":                               true,
+		"SIOCSIFRTLABEL":                               true,
+		"SIOCSIFRVNET":                                 true,
+		"SIOCSIFSLAVE":                                 true,
+		"SIOCSIFTIMESLOT":                              true,
+		"SIOCSIFTXQLEN":                                true,
+		"SIOCSIFVLAN":                                  true,
+		"SIOCSIFVNET":                                  true,
+		"SIOCSIFXFLAGS":                                true,
+		"SIOCSLIFPHYADDR":                              true,
+		"SIOCSLIFPHYRTABLE":                            true,
+		"SIOCSLIFPHYTTL":                               true,
+		"SIOCSLINKSTR":                                 true,
+		"SIOCSLOWAT":                                   true,
+		"SIOCSPGRP":                                    true,
+		"SIOCSRARP":                                    true,
+		"SIOCSSPPPPARAMS":                              true,
+		"SIOCSVH":                                      true,
+		"SIOCSVNETID":                                  true,
+		"SIOCZIFDATA":                                  true,
+		"SIO_GET_EXTENSION_FUNCTION_POINTER":           true,
+		"SIO_GET_INTERFACE_LIST":                       true,
+		"SIO_KEEPALIVE_VALS":                           true,
+		"SIO_UDP_CONNRESET":                            true,
+		"SOCK_CLOEXEC":                                 true,
+		"SOCK_DCCP":                                    true,
+		"SOCK_DGRAM":                                   true,
+		"SOCK_FLAGS_MASK":                              true,
+		"SOCK_MAXADDRLEN":                              true,
+		"SOCK_NONBLOCK":                                true,
+		"SOCK_NOSIGPIPE":                               true,
+		"SOCK_PACKET":                                  true,
+		"SOCK_RAW":                                     true,
+		"SOCK_RDM":                                     true,
+		"SOCK_SEQPACKET":                               true,
+		"SOCK_STREAM":                                  true,
+		"SOL_AAL":                                      true,
+		"SOL_ATM":                                      true,
+		"SOL_DECNET":                                   true,
+		"SOL_ICMPV6":                                   true,
+		"SOL_IP":                                       true,
+		"SOL_IPV6":                                     true,
+		"SOL_IRDA":                                     true,
+		"SOL_PACKET":                                   true,
+		"SOL_RAW":                                      true,
+		"SOL_SOCKET":                                   true,
+		"SOL_TCP":                                      true,
+		"SOL_X25":                                      true,
+		"SOMAXCONN":                                    true,
+		"SO_ACCEPTCONN":                                true,
+		"SO_ACCEPTFILTER":                              true,
+		"SO_ATTACH_FILTER":                             true,
+		"SO_BINDANY":                                   true,
+		"SO_BINDTODEVICE":                              true,
+		"SO_BINTIME":                                   true,
+		"SO_BROADCAST":                                 true,
+		"SO_BSDCOMPAT":                                 true,
+		"SO_DEBUG":                                     true,
+		"SO_DETACH_FILTER":                             true,
+		"SO_DOMAIN":                                    true,
+		"SO_DONTROUTE":                                 true,
+		"SO_DONTTRUNC":                                 true,
+		"SO_ERROR":                                     true,
+		"SO_KEEPALIVE":                                 true,
+		"SO_LABEL":                                     true,
+		"SO_LINGER":                                    true,
+		"SO_LINGER_SEC":                                true,
+		"SO_LISTENINCQLEN":                             true,
+		"SO_LISTENQLEN":                                true,
+		"SO_LISTENQLIMIT":                              true,
+		"SO_MARK":                                      true,
+		"SO_NETPROC":                                   true,
+		"SO_NKE":                                       true,
+		"SO_NOADDRERR":                                 true,
+		"SO_NOHEADER":                                  true,
+		"SO_NOSIGPIPE":                                 true,
+		"SO_NOTIFYCONFLICT":                            true,
+		"SO_NO_CHECK":                                  true,
+		"SO_NO_DDP":                                    true,
+		"SO_NO_OFFLOAD":                                true,
+		"SO_NP_EXTENSIONS":                             true,
+		"SO_NREAD":                                     true,
+		"SO_NWRITE":                                    true,
+		"SO_OOBINLINE":                                 true,
+		"SO_OVERFLOWED":                                true,
+		"SO_PASSCRED":                                  true,
+		"SO_PASSSEC":                                   true,
+		"SO_PEERCRED":                                  true,
+		"SO_PEERLABEL":                                 true,
+		"SO_PEERNAME":                                  true,
+		"SO_PEERSEC":                                   true,
+		"SO_PRIORITY":                                  true,
+		"SO_PROTOCOL":                                  true,
+		"SO_PROTOTYPE":                                 true,
+		"SO_RANDOMPORT":                                true,
+		"SO_RCVBUF":                                    true,
+		"SO_RCVBUFFORCE":                               true,
+		"SO_RCVLOWAT":                                  true,
+		"SO_RCVTIMEO":                                  true,
+		"SO_RESTRICTIONS":                              true,
+		"SO_RESTRICT_DENYIN":                           true,
+		"SO_RESTRICT_DENYOUT":                          true,
+		"SO_RESTRICT_DENYSET":                          true,
+		"SO_REUSEADDR":                                 true,
+		"SO_REUSEPORT":                                 true,
+		"SO_REUSESHAREUID":                             true,
+		"SO_RTABLE":                                    true,
+		"SO_RXQ_OVFL":                                  true,
+		"SO_SECURITY_AUTHENTICATION":                   true,
+		"SO_SECURITY_ENCRYPTION_NETWORK":               true,
+		"SO_SECURITY_ENCRYPTION_TRANSPORT":             true,
+		"SO_SETFIB":                                    true,
+		"SO_SNDBUF":                                    true,
+		"SO_SNDBUFFORCE":                               true,
+		"SO_SNDLOWAT":                                  true,
+		"SO_SNDTIMEO":                                  true,
+		"SO_SPLICE":                                    true,
+		"SO_TIMESTAMP":                                 true,
+		"SO_TIMESTAMPING":                              true,
+		"SO_TIMESTAMPNS":                               true,
+		"SO_TIMESTAMP_MONOTONIC":                       true,
+		"SO_TYPE":                                      true,
+		"SO_UPCALLCLOSEWAIT":                           true,
+		"SO_UPDATE_ACCEPT_CONTEXT":                     true,
+		"SO_UPDATE_CONNECT_CONTEXT":                    true,
+		"SO_USELOOPBACK":                               true,
+		"SO_USER_COOKIE":                               true,
+		"SO_VENDOR":                                    true,
+		"SO_WANTMORE":                                  true,
+		"SO_WANTOOBFLAG":                               true,
+		"SSLExtraCertChainPolicyPara":                  true,
+		"STANDARD_RIGHTS_ALL":                          true,
+		"STANDARD_RIGHTS_EXECUTE":                      true,
+		"STANDARD_RIGHTS_READ":                         true,
+		"STANDARD_RIGHTS_REQUIRED":                     true,
+		"STANDARD_RIGHTS_WRITE":                        true,
+		"STARTF_USESHOWWINDOW":                         true,
+		"STARTF_USESTDHANDLES":                         true,
+		"STD_ERROR_HANDLE":                             true,
+		"STD_INPUT_HANDLE":                             true,
+		"STD_OUTPUT_HANDLE":                            true,
+		"SUBLANG_ENGLISH_US":                           true,
+		"SW_FORCEMINIMIZE":                             true,
+		"SW_HIDE":                                      true,
+		"SW_MAXIMIZE":                                  true,
+		"SW_MINIMIZE":                                  true,
+		"SW_NORMAL":                                    true,
+		"SW_RESTORE":                                   true,
+		"SW_SHOW":                                      true,
+		"SW_SHOWDEFAULT":                               true,
+		"SW_SHOWMAXIMIZED":                             true,
+		"SW_SHOWMINIMIZED":                             true,
+		"SW_SHOWMINNOACTIVE":                           true,
+		"SW_SHOWNA":                                    true,
+		"SW_SHOWNOACTIVATE":                            true,
+		"SW_SHOWNORMAL":                                true,
+		"SYMBOLIC_LINK_FLAG_DIRECTORY":                 true,
+		"SYNCHRONIZE":                                  true,
+		"SYSCTL_VERSION":                               true,
+		"SYSCTL_VERS_0":                                true,
+		"SYSCTL_VERS_1":                                true,
+		"SYSCTL_VERS_MASK":                             true,
+		"SYS_ABORT2":                                   true,
+		"SYS_ACCEPT":                                   true,
+		"SYS_ACCEPT4":                                  true,
+		"SYS_ACCEPT_NOCANCEL":                          true,
+		"SYS_ACCESS":                                   true,
+		"SYS_ACCESS_EXTENDED":                          true,
+		"SYS_ACCT":                                     true,
+		"SYS_ADD_KEY":                                  true,
+		"SYS_ADD_PROFIL":                               true,
+		"SYS_ADJFREQ":                                  true,
+		"SYS_ADJTIME":                                  true,
+		"SYS_ADJTIMEX":                                 true,
+		"SYS_AFS_SYSCALL":                              true,
+		"SYS_AIO_CANCEL":                               true,
+		"SYS_AIO_ERROR":                                true,
+		"SYS_AIO_FSYNC":                                true,
+		"SYS_AIO_READ":                                 true,
+		"SYS_AIO_RETURN":                               true,
+		"SYS_AIO_SUSPEND":                              true,
+		"SYS_AIO_SUSPEND_NOCANCEL":                     true,
+		"SYS_AIO_WRITE":                                true,
+		"SYS_ALARM":                                    true,
+		"SYS_ARCH_PRCTL":                               true,
+		"SYS_ARM_FADVISE64_64":                         true,
+		"SYS_ARM_SYNC_FILE_RANGE":                      true,
+		"SYS_ATGETMSG":                                 true,
+		"SYS_ATPGETREQ":                                true,
+		"SYS_ATPGETRSP":                                true,
+		"SYS_ATPSNDREQ":                                true,
+		"SYS_ATPSNDRSP":                                true,
+		"SYS_ATPUTMSG":                                 true,
+		"SYS_ATSOCKET":                                 true,
+		"SYS_AUDIT":                                    true,
+		"SYS_AUDITCTL":                                 true,
+		"SYS_AUDITON":                                  true,
+		"SYS_AUDIT_SESSION_JOIN":                       true,
+		"SYS_AUDIT_SESSION_PORT":                       true,
+		"SYS_AUDIT_SESSION_SELF":                       true,
+		"SYS_BDFLUSH":                                  true,
+		"SYS_BIND":                                     true,
+		"SYS_BINDAT":                                   true,
+		"SYS_BREAK":                                    true,
+		"SYS_BRK":                                      true,
+		"SYS_BSDTHREAD_CREATE":                         true,
+		"SYS_BSDTHREAD_REGISTER":                       true,
+		"SYS_BSDTHREAD_TERMINATE":                      true,
+		"SYS_CAPGET":                                   true,
+		"SYS_CAPSET":                                   true,
+		"SYS_CAP_ENTER":                                true,
+		"SYS_CAP_FCNTLS_GET":                           true,
+		"SYS_CAP_FCNTLS_LIMIT":                         true,
+		"SYS_CAP_GETMODE":                              true,
+		"SYS_CAP_GETRIGHTS":                            true,
+		"SYS_CAP_IOCTLS_GET":                           true,
+		"SYS_CAP_IOCTLS_LIMIT":                         true,
+		"SYS_CAP_NEW":                                  true,
+		"SYS_CAP_RIGHTS_GET":                           true,
+		"SYS_CAP_RIGHTS_LIMIT":                         true,
+		"SYS_CHDIR":                                    true,
+		"SYS_CHFLAGS":                                  true,
+		"SYS_CHFLAGSAT":                                true,
+		"SYS_CHMOD":                                    true,
+		"SYS_CHMOD_EXTENDED":                           true,
+		"SYS_CHOWN":                                    true,
+		"SYS_CHOWN32":                                  true,
+		"SYS_CHROOT":                                   true,
+		"SYS_CHUD":                                     true,
+		"SYS_CLOCK_ADJTIME":                            true,
+		"SYS_CLOCK_GETCPUCLOCKID2":                     true,
+		"SYS_CLOCK_GETRES":                             true,
+		"SYS_CLOCK_GETTIME":                            true,
+		"SYS_CLOCK_NANOSLEEP":                          true,
+		"SYS_CLOCK_SETTIME":                            true,
+		"SYS_CLONE":                                    true,
+		"SYS_CLOSE":                                    true,
+		"SYS_CLOSEFROM":                                true,
+		"SYS_CLOSE_NOCANCEL":                           true,
+		"SYS_CONNECT":                                  true,
+		"SYS_CONNECTAT":                                true,
+		"SYS_CONNECT_NOCANCEL":                         true,
+		"SYS_COPYFILE":                                 true,
+		"SYS_CPUSET":                                   true,
+		"SYS_CPUSET_GETAFFINITY":                       true,
+		"SYS_CPUSET_GETID":                             true,
+		"SYS_CPUSET_SETAFFINITY":                       true,
+		"SYS_CPUSET_SETID":                             true,
+		"SYS_CREAT":                                    true,
+		"SYS_CREATE_MODULE":                            true,
+		"SYS_CSOPS":                                    true,
+		"SYS_DELETE":                                   true,
+		"SYS_DELETE_MODULE":                            true,
+		"SYS_DUP":                                      true,
+		"SYS_DUP2":                                     true,
+		"SYS_DUP3":                                     true,
+		"SYS_EACCESS":                                  true,
+		"SYS_EPOLL_CREATE":                             true,
+		"SYS_EPOLL_CREATE1":                            true,
+		"SYS_EPOLL_CTL":                                true,
+		"SYS_EPOLL_CTL_OLD":                            true,
+		"SYS_EPOLL_PWAIT":                              true,
+		"SYS_EPOLL_WAIT":                               true,
+		"SYS_EPOLL_WAIT_OLD":                           true,
+		"SYS_EVENTFD":                                  true,
+		"SYS_EVENTFD2":                                 true,
+		"SYS_EXCHANGEDATA":                             true,
+		"SYS_EXECVE":                                   true,
+		"SYS_EXIT":                                     true,
+		"SYS_EXIT_GROUP":                               true,
+		"SYS_EXTATTRCTL":                               true,
+		"SYS_EXTATTR_DELETE_FD":                        true,
+		"SYS_EXTATTR_DELETE_FILE":                      true,
+		"SYS_EXTATTR_DELETE_LINK":                      true,
+		"SYS_EXTATTR_GET_FD":                           true,
+		"SYS_EXTATTR_GET_FILE":                         true,
+		"SYS_EXTATTR_GET_LINK":                         true,
+		"SYS_EXTATTR_LIST_FD":                          true,
+		"SYS_EXTATTR_LIST_FILE":                        true,
+		"SYS_EXTATTR_LIST_LINK":                        true,
+		"SYS_EXTATTR_SET_FD":                           true,
+		"SYS_EXTATTR_SET_FILE":                         true,
+		"SYS_EXTATTR_SET_LINK":                         true,
+		"SYS_FACCESSAT":                                true,
+		"SYS_FADVISE64":                                true,
+		"SYS_FADVISE64_64":                             true,
+		"SYS_FALLOCATE":                                true,
+		"SYS_FANOTIFY_INIT":                            true,
+		"SYS_FANOTIFY_MARK":                            true,
+		"SYS_FCHDIR":                                   true,
+		"SYS_FCHFLAGS":                                 true,
+		"SYS_FCHMOD":                                   true,
+		"SYS_FCHMODAT":                                 true,
+		"SYS_FCHMOD_EXTENDED":                          true,
+		"SYS_FCHOWN":                                   true,
+		"SYS_FCHOWN32":                                 true,
+		"SYS_FCHOWNAT":                                 true,
+		"SYS_FCHROOT":                                  true,
+		"SYS_FCNTL":                                    true,
+		"SYS_FCNTL64":                                  true,
+		"SYS_FCNTL_NOCANCEL":                           true,
+		"SYS_FDATASYNC":                                true,
+		"SYS_FEXECVE":                                  true,
+		"SYS_FFCLOCK_GETCOUNTER":                       true,
+		"SYS_FFCLOCK_GETESTIMATE":                      true,
+		"SYS_FFCLOCK_SETESTIMATE":                      true,
+		"SYS_FFSCTL":                                   true,
+		"SYS_FGETATTRLIST":                             true,
+		"SYS_FGETXATTR":                                true,
+		"SYS_FHOPEN":                                   true,
+		"SYS_FHSTAT":                                   true,
+		"SYS_FHSTATFS":                                 true,
+		"SYS_FILEPORT_MAKEFD":                          true,
+		"SYS_FILEPORT_MAKEPORT":                        true,
+		"SYS_FKTRACE":                                  true,
+		"SYS_FLISTXATTR":                               true,
+		"SYS_FLOCK":                                    true,
+		"SYS_FORK":                                     true,
+		"SYS_FPATHCONF":                                true,
+		"SYS_FREEBSD6_FTRUNCATE":                       true,
+		"SYS_FREEBSD6_LSEEK":                           true,
+		"SYS_FREEBSD6_MMAP":                            true,
+		"SYS_FREEBSD6_PREAD":                           true,
+		"SYS_FREEBSD6_PWRITE":                          true,
+		"SYS_FREEBSD6_TRUNCATE":                        true,
+		"SYS_FREMOVEXATTR":                             true,
+		"SYS_FSCTL":                                    true,
+		"SYS_FSETATTRLIST":                             true,
+		"SYS_FSETXATTR":                                true,
+		"SYS_FSGETPATH":                                true,
+		"SYS_FSTAT":                                    true,
+		"SYS_FSTAT64":                                  true,
+		"SYS_FSTAT64_EXTENDED":                         true,
+		"SYS_FSTATAT":                                  true,
+		"SYS_FSTATAT64":                                true,
+		"SYS_FSTATFS":                                  true,
+		"SYS_FSTATFS64":                                true,
+		"SYS_FSTATV":                                   true,
+		"SYS_FSTATVFS1":                                true,
+		"SYS_FSTAT_EXTENDED":                           true,
+		"SYS_FSYNC":                                    true,
+		"SYS_FSYNC_NOCANCEL":                           true,
+		"SYS_FSYNC_RANGE":                              true,
+		"SYS_FTIME":                                    true,
+		"SYS_FTRUNCATE":                                true,
+		"SYS_FTRUNCATE64":                              true,
+		"SYS_FUTEX":                                    true,
+		"SYS_FUTIMENS":                                 true,
+		"SYS_FUTIMES":                                  true,
+		"SYS_FUTIMESAT":                                true,
+		"SYS_GETATTRLIST":                              true,
+		"SYS_GETAUDIT":                                 true,
+		"SYS_GETAUDIT_ADDR":                            true,
+		"SYS_GETAUID":                                  true,
+		"SYS_GETCONTEXT":                               true,
+		"SYS_GETCPU":                                   true,
+		"SYS_GETCWD":                                   true,
+		"SYS_GETDENTS":                                 true,
+		"SYS_GETDENTS64":                               true,
+		"SYS_GETDIRENTRIES":                            true,
+		"SYS_GETDIRENTRIES64":                          true,
+		"SYS_GETDIRENTRIESATTR":                        true,
+		"SYS_GETDTABLECOUNT":                           true,
+		"SYS_GETDTABLESIZE":                            true,
+		"SYS_GETEGID":                                  true,
+		"SYS_GETEGID32":                                true,
+		"SYS_GETEUID":                                  true,
+		"SYS_GETEUID32":                                true,
+		"SYS_GETFH":                                    true,
+		"SYS_GETFSSTAT":                                true,
+		"SYS_GETFSSTAT64":                              true,
+		"SYS_GETGID":                                   true,
+		"SYS_GETGID32":                                 true,
+		"SYS_GETGROUPS":                                true,
+		"SYS_GETGROUPS32":                              true,
+		"SYS_GETHOSTUUID":                              true,
+		"SYS_GETITIMER":                                true,
+		"SYS_GETLCID":                                  true,
+		"SYS_GETLOGIN":                                 true,
+		"SYS_GETLOGINCLASS":                            true,
+		"SYS_GETPEERNAME":                              true,
+		"SYS_GETPGID":                                  true,
+		"SYS_GETPGRP":                                  true,
+		"SYS_GETPID":                                   true,
+		"SYS_GETPMSG":                                  true,
+		"SYS_GETPPID":                                  true,
+		"SYS_GETPRIORITY":                              true,
+		"SYS_GETRESGID":                                true,
+		"SYS_GETRESGID32":                              true,
+		"SYS_GETRESUID":                                true,
+		"SYS_GETRESUID32":                              true,
+		"SYS_GETRLIMIT":                                true,
+		"SYS_GETRTABLE":                                true,
+		"SYS_GETRUSAGE":                                true,
+		"SYS_GETSGROUPS":                               true,
+		"SYS_GETSID":                                   true,
+		"SYS_GETSOCKNAME":                              true,
+		"SYS_GETSOCKOPT":                               true,
+		"SYS_GETTHRID":                                 true,
+		"SYS_GETTID":                                   true,
+		"SYS_GETTIMEOFDAY":                             true,
+		"SYS_GETUID":                                   true,
+		"SYS_GETUID32":                                 true,
+		"SYS_GETVFSSTAT":                               true,
+		"SYS_GETWGROUPS":                               true,
+		"SYS_GETXATTR":                                 true,
+		"SYS_GET_KERNEL_SYMS":                          true,
+		"SYS_GET_MEMPOLICY":                            true,
+		"SYS_GET_ROBUST_LIST":                          true,
+		"SYS_GET_THREAD_AREA":                          true,
+		"SYS_GTTY":                                     true,
+		"SYS_IDENTITYSVC":                              true,
+		"SYS_IDLE":                                     true,
+		"SYS_INITGROUPS":                               true,
+		"SYS_INIT_MODULE":                              true,
+		"SYS_INOTIFY_ADD_WATCH":                        true,
+		"SYS_INOTIFY_INIT":                             true,
+		"SYS_INOTIFY_INIT1":                            true,
+		"SYS_INOTIFY_RM_WATCH":                         true,
+		"SYS_IOCTL":                                    true,
+		"SYS_IOPERM":                                   true,
+		"SYS_IOPL":                                     true,
+		"SYS_IOPOLICYSYS":                              true,
+		"SYS_IOPRIO_GET":                               true,
+		"SYS_IOPRIO_SET":                               true,
+		"SYS_IO_CANCEL":                                true,
+		"SYS_IO_DESTROY":                               true,
+		"SYS_IO_GETEVENTS":                             true,
+		"SYS_IO_SETUP":                                 true,
+		"SYS_IO_SUBMIT":                                true,
+		"SYS_IPC":                                      true,
+		"SYS_ISSETUGID":                                true,
+		"SYS_JAIL":                                     true,
+		"SYS_JAIL_ATTACH":                              true,
+		"SYS_JAIL_GET":                                 true,
+		"SYS_JAIL_REMOVE":                              true,
+		"SYS_JAIL_SET":                                 true,
+		"SYS_KDEBUG_TRACE":                             true,
+		"SYS_KENV":                                     true,
+		"SYS_KEVENT":                                   true,
+		"SYS_KEVENT64":                                 true,
+		"SYS_KEXEC_LOAD":                               true,
+		"SYS_KEYCTL":                                   true,
+		"SYS_KILL":                                     true,
+		"SYS_KLDFIND":                                  true,
+		"SYS_KLDFIRSTMOD":                              true,
+		"SYS_KLDLOAD":                                  true,
+		"SYS_KLDNEXT":                                  true,
+		"SYS_KLDSTAT":                                  true,
+		"SYS_KLDSYM":                                   true,
+		"SYS_KLDUNLOAD":                                true,
+		"SYS_KLDUNLOADF":                               true,
+		"SYS_KQUEUE":                                   true,
+		"SYS_KQUEUE1":                                  true,
+		"SYS_KTIMER_CREATE":                            true,
+		"SYS_KTIMER_DELETE":                            true,
+		"SYS_KTIMER_GETOVERRUN":                        true,
+		"SYS_KTIMER_GETTIME":                           true,
+		"SYS_KTIMER_SETTIME":                           true,
+		"SYS_KTRACE":                                   true,
+		"SYS_LCHFLAGS":                                 true,
+		"SYS_LCHMOD":                                   true,
+		"SYS_LCHOWN":                                   true,
+		"SYS_LCHOWN32":                                 true,
+		"SYS_LGETFH":                                   true,
+		"SYS_LGETXATTR":                                true,
+		"SYS_LINK":                                     true,
+		"SYS_LINKAT":                                   true,
+		"SYS_LIO_LISTIO":                               true,
+		"SYS_LISTEN":                                   true,
+		"SYS_LISTXATTR":                                true,
+		"SYS_LLISTXATTR":                               true,
+		"SYS_LOCK":                                     true,
+		"SYS_LOOKUP_DCOOKIE":                           true,
+		"SYS_LPATHCONF":                                true,
+		"SYS_LREMOVEXATTR":                             true,
+		"SYS_LSEEK":                                    true,
+		"SYS_LSETXATTR":                                true,
+		"SYS_LSTAT":                                    true,
+		"SYS_LSTAT64":                                  true,
+		"SYS_LSTAT64_EXTENDED":                         true,
+		"SYS_LSTATV":                                   true,
+		"SYS_LSTAT_EXTENDED":                           true,
+		"SYS_LUTIMES":                                  true,
+		"SYS_MAC_SYSCALL":                              true,
+		"SYS_MADVISE":                                  true,
+		"SYS_MADVISE1":                                 true,
+		"SYS_MAXSYSCALL":                               true,
+		"SYS_MBIND":                                    true,
+		"SYS_MIGRATE_PAGES":                            true,
+		"SYS_MINCORE":                                  true,
+		"SYS_MINHERIT":                                 true,
+		"SYS_MKCOMPLEX":                                true,
+		"SYS_MKDIR":                                    true,
+		"SYS_MKDIRAT":                                  true,
+		"SYS_MKDIR_EXTENDED":                           true,
+		"SYS_MKFIFO":                                   true,
+		"SYS_MKFIFOAT":                                 true,
+		"SYS_MKFIFO_EXTENDED":                          true,
+		"SYS_MKNOD":                                    true,
+		"SYS_MKNODAT":                                  true,
+		"SYS_MLOCK":                                    true,
+		"SYS_MLOCKALL":                                 true,
+		"SYS_MMAP":                                     true,
+		"SYS_MMAP2":                                    true,
+		"SYS_MODCTL":                                   true,
+		"SYS_MODFIND":                                  true,
+		"SYS_MODFNEXT":                                 true,
+		"SYS_MODIFY_LDT":                               true,
+		"SYS_MODNEXT":                                  true,
+		"SYS_MODSTAT":                                  true,
+		"SYS_MODWATCH":                                 true,
+		"SYS_MOUNT":                                    true,
+		"SYS_MOVE_PAGES":                               true,
+		"SYS_MPROTECT":                                 true,
+		"SYS_MPX":                                      true,
+		"SYS_MQUERY":                                   true,
+		"SYS_MQ_GETSETATTR":                            true,
+		"SYS_MQ_NOTIFY":                                true,
+		"SYS_MQ_OPEN":                                  true,
+		"SYS_MQ_TIMEDRECEIVE":                          true,
+		"SYS_MQ_TIMEDSEND":                             true,
+		"SYS_MQ_UNLINK":                                true,
+		"SYS_MREMAP":                                   true,
+		"SYS_MSGCTL":                                   true,
+		"SYS_MSGGET":                                   true,
+		"SYS_MSGRCV":                                   true,
+		"SYS_MSGRCV_NOCANCEL":                          true,
+		"SYS_MSGSND":                                   true,
+		"SYS_MSGSND_NOCANCEL":                          true,
+		"SYS_MSGSYS":                                   true,
+		"SYS_MSYNC":                                    true,
+		"SYS_MSYNC_NOCANCEL":                           true,
+		"SYS_MUNLOCK":                                  true,
+		"SYS_MUNLOCKALL":                               true,
+		"SYS_MUNMAP":                                   true,
+		"SYS_NAME_TO_HANDLE_AT":                        true,
+		"SYS_NANOSLEEP":                                true,
+		"SYS_NEWFSTATAT":                               true,
+		"SYS_NFSCLNT":                                  true,
+		"SYS_NFSSERVCTL":                               true,
+		"SYS_NFSSVC":                                   true,
+		"SYS_NFSTAT":                                   true,
+		"SYS_NICE":                                     true,
+		"SYS_NLSTAT":                                   true,
+		"SYS_NMOUNT":                                   true,
+		"SYS_NSTAT":                                    true,
+		"SYS_NTP_ADJTIME":                              true,
+		"SYS_NTP_GETTIME":                              true,
+		"SYS_OABI_SYSCALL_BASE":                        true,
+		"SYS_OBREAK":                                   true,
+		"SYS_OLDFSTAT":                                 true,
+		"SYS_OLDLSTAT":                                 true,
+		"SYS_OLDOLDUNAME":                              true,
+		"SYS_OLDSTAT":                                  true,
+		"SYS_OLDUNAME":                                 true,
+		"SYS_OPEN":                                     true,
+		"SYS_OPENAT":                                   true,
+		"SYS_OPENBSD_POLL":                             true,
+		"SYS_OPEN_BY_HANDLE_AT":                        true,
+		"SYS_OPEN_EXTENDED":                            true,
+		"SYS_OPEN_NOCANCEL":                            true,
+		"SYS_OVADVISE":                                 true,
+		"SYS_PACCEPT":                                  true,
+		"SYS_PATHCONF":                                 true,
+		"SYS_PAUSE":                                    true,
+		"SYS_PCICONFIG_IOBASE":                         true,
+		"SYS_PCICONFIG_READ":                           true,
+		"SYS_PCICONFIG_WRITE":                          true,
+		"SYS_PDFORK":                                   true,
+		"SYS_PDGETPID":                                 true,
+		"SYS_PDKILL":                                   true,
+		"SYS_PERF_EVENT_OPEN":                          true,
+		"SYS_PERSONALITY":                              true,
+		"SYS_PID_HIBERNATE":                            true,
+		"SYS_PID_RESUME":                               true,
+		"SYS_PID_SHUTDOWN_SOCKETS":                     true,
+		"SYS_PID_SUSPEND":                              true,
+		"SYS_PIPE":                                     true,
+		"SYS_PIPE2":                                    true,
+		"SYS_PIVOT_ROOT":                               true,
+		"SYS_PMC_CONTROL":                              true,
+		"SYS_PMC_GET_INFO":                             true,
+		"SYS_POLL":                                     true,
+		"SYS_POLLTS":                                   true,
+		"SYS_POLL_NOCANCEL":                            true,
+		"SYS_POSIX_FADVISE":                            true,
+		"SYS_POSIX_FALLOCATE":                          true,
+		"SYS_POSIX_OPENPT":                             true,
+		"SYS_POSIX_SPAWN":                              true,
+		"SYS_PPOLL":                                    true,
+		"SYS_PRCTL":                                    true,
+		"SYS_PREAD":                                    true,
+		"SYS_PREAD64":                                  true,
+		"SYS_PREADV":                                   true,
+		"SYS_PREAD_NOCANCEL":                           true,
+		"SYS_PRLIMIT64":                                true,
+		"SYS_PROCCTL":                                  true,
+		"SYS_PROCESS_POLICY":                           true,
+		"SYS_PROCESS_VM_READV":                         true,
+		"SYS_PROCESS_VM_WRITEV":                        true,
+		"SYS_PROC_INFO":                                true,
+		"SYS_PROF":                                     true,
+		"SYS_PROFIL":                                   true,
+		"SYS_PSELECT":                                  true,
+		"SYS_PSELECT6":                                 true,
+		"SYS_PSET_ASSIGN":                              true,
+		"SYS_PSET_CREATE":                              true,
+		"SYS_PSET_DESTROY":                             true,
+		"SYS_PSYNCH_CVBROAD":                           true,
+		"SYS_PSYNCH_CVCLRPREPOST":                      true,
+		"SYS_PSYNCH_CVSIGNAL":                          true,
+		"SYS_PSYNCH_CVWAIT":                            true,
+		"SYS_PSYNCH_MUTEXDROP":                         true,
+		"SYS_PSYNCH_MUTEXWAIT":                         true,
+		"SYS_PSYNCH_RW_DOWNGRADE":                      true,
+		"SYS_PSYNCH_RW_LONGRDLOCK":                     true,
+		"SYS_PSYNCH_RW_RDLOCK":                         true,
+		"SYS_PSYNCH_RW_UNLOCK":                         true,
+		"SYS_PSYNCH_RW_UNLOCK2":                        true,
+		"SYS_PSYNCH_RW_UPGRADE":                        true,
+		"SYS_PSYNCH_RW_WRLOCK":                         true,
+		"SYS_PSYNCH_RW_YIELDWRLOCK":                    true,
+		"SYS_PTRACE":                                   true,
+		"SYS_PUTPMSG":                                  true,
+		"SYS_PWRITE":                                   true,
+		"SYS_PWRITE64":                                 true,
+		"SYS_PWRITEV":                                  true,
+		"SYS_PWRITE_NOCANCEL":                          true,
+		"SYS_QUERY_MODULE":                             true,
+		"SYS_QUOTACTL":                                 true,
+		"SYS_RASCTL":                                   true,
+		"SYS_RCTL_ADD_RULE":                            true,
+		"SYS_RCTL_GET_LIMITS":                          true,
+		"SYS_RCTL_GET_RACCT":                           true,
+		"SYS_RCTL_GET_RULES":                           true,
+		"SYS_RCTL_REMOVE_RULE":                         true,
+		"SYS_READ":                                     true,
+		"SYS_READAHEAD":                                true,
+		"SYS_READDIR":                                  true,
+		"SYS_READLINK":                                 true,
+		"SYS_READLINKAT":                               true,
+		"SYS_READV":                                    true,
+		"SYS_READV_NOCANCEL":                           true,
+		"SYS_READ_NOCANCEL":                            true,
+		"SYS_REBOOT":                                   true,
+		"SYS_RECV":                                     true,
+		"SYS_RECVFROM":                                 true,
+		"SYS_RECVFROM_NOCANCEL":                        true,
+		"SYS_RECVMMSG":                                 true,
+		"SYS_RECVMSG":                                  true,
+		"SYS_RECVMSG_NOCANCEL":                         true,
+		"SYS_REMAP_FILE_PAGES":                         true,
+		"SYS_REMOVEXATTR":                              true,
+		"SYS_RENAME":                                   true,
+		"SYS_RENAMEAT":                                 true,
+		"SYS_REQUEST_KEY":                              true,
+		"SYS_RESTART_SYSCALL":                          true,
+		"SYS_REVOKE":                                   true,
+		"SYS_RFORK":                                    true,
+		"SYS_RMDIR":                                    true,
+		"SYS_RTPRIO":                                   true,
+		"SYS_RTPRIO_THREAD":                            true,
+		"SYS_RT_SIGACTION":                             true,
+		"SYS_RT_SIGPENDING":                            true,
+		"SYS_RT_SIGPROCMASK":                           true,
+		"SYS_RT_SIGQUEUEINFO":                          true,
+		"SYS_RT_SIGRETURN":                             true,
+		"SYS_RT_SIGSUSPEND":                            true,
+		"SYS_RT_SIGTIMEDWAIT":                          true,
+		"SYS_RT_TGSIGQUEUEINFO":                        true,
+		"SYS_SBRK":                                     true,
+		"SYS_SCHED_GETAFFINITY":                        true,
+		"SYS_SCHED_GETPARAM":                           true,
+		"SYS_SCHED_GETSCHEDULER":                       true,
+		"SYS_SCHED_GET_PRIORITY_MAX":                   true,
+		"SYS_SCHED_GET_PRIORITY_MIN":                   true,
+		"SYS_SCHED_RR_GET_INTERVAL":                    true,
+		"SYS_SCHED_SETAFFINITY":                        true,
+		"SYS_SCHED_SETPARAM":                           true,
+		"SYS_SCHED_SETSCHEDULER":                       true,
+		"SYS_SCHED_YIELD":                              true,
+		"SYS_SCTP_GENERIC_RECVMSG":                     true,
+		"SYS_SCTP_GENERIC_SENDMSG":                     true,
+		"SYS_SCTP_GENERIC_SENDMSG_IOV":                 true,
+		"SYS_SCTP_PEELOFF":                             true,
+		"SYS_SEARCHFS":                                 true,
+		"SYS_SECURITY":                                 true,
+		"SYS_SELECT":                                   true,
+		"SYS_SELECT_NOCANCEL":                          true,
+		"SYS_SEMCONFIG":                                true,
+		"SYS_SEMCTL":                                   true,
+		"SYS_SEMGET":                                   true,
+		"SYS_SEMOP":                                    true,
+		"SYS_SEMSYS":                                   true,
+		"SYS_SEMTIMEDOP":                               true,
+		"SYS_SEM_CLOSE":                                true,
+		"SYS_SEM_DESTROY":                              true,
+		"SYS_SEM_GETVALUE":                             true,
+		"SYS_SEM_INIT":                                 true,
+		"SYS_SEM_OPEN":                                 true,
+		"SYS_SEM_POST":                                 true,
+		"SYS_SEM_TRYWAIT":                              true,
+		"SYS_SEM_UNLINK":                               true,
+		"SYS_SEM_WAIT":                                 true,
+		"SYS_SEM_WAIT_NOCANCEL":                        true,
+		"SYS_SEND":                                     true,
+		"SYS_SENDFILE":                                 true,
+		"SYS_SENDFILE64":                               true,
+		"SYS_SENDMMSG":                                 true,
+		"SYS_SENDMSG":                                  true,
+		"SYS_SENDMSG_NOCANCEL":                         true,
+		"SYS_SENDTO":                                   true,
+		"SYS_SENDTO_NOCANCEL":                          true,
+		"SYS_SETATTRLIST":                              true,
+		"SYS_SETAUDIT":                                 true,
+		"SYS_SETAUDIT_ADDR":                            true,
+		"SYS_SETAUID":                                  true,
+		"SYS_SETCONTEXT":                               true,
+		"SYS_SETDOMAINNAME":                            true,
+		"SYS_SETEGID":                                  true,
+		"SYS_SETEUID":                                  true,
+		"SYS_SETFIB":                                   true,
+		"SYS_SETFSGID":                                 true,
+		"SYS_SETFSGID32":                               true,
+		"SYS_SETFSUID":                                 true,
+		"SYS_SETFSUID32":                               true,
+		"SYS_SETGID":                                   true,
+		"SYS_SETGID32":                                 true,
+		"SYS_SETGROUPS":                                true,
+		"SYS_SETGROUPS32":                              true,
+		"SYS_SETHOSTNAME":                              true,
+		"SYS_SETITIMER":                                true,
+		"SYS_SETLCID":                                  true,
+		"SYS_SETLOGIN":                                 true,
+		"SYS_SETLOGINCLASS":                            true,
+		"SYS_SETNS":                                    true,
+		"SYS_SETPGID":                                  true,
+		"SYS_SETPRIORITY":                              true,
+		"SYS_SETPRIVEXEC":                              true,
+		"SYS_SETREGID":                                 true,
+		"SYS_SETREGID32":                               true,
+		"SYS_SETRESGID":                                true,
+		"SYS_SETRESGID32":                              true,
+		"SYS_SETRESUID":                                true,
+		"SYS_SETRESUID32":                              true,
+		"SYS_SETREUID":                                 true,
+		"SYS_SETREUID32":                               true,
+		"SYS_SETRLIMIT":                                true,
+		"SYS_SETRTABLE":                                true,
+		"SYS_SETSGROUPS":                               true,
+		"SYS_SETSID":                                   true,
+		"SYS_SETSOCKOPT":                               true,
+		"SYS_SETTID":                                   true,
+		"SYS_SETTID_WITH_PID":                          true,
+		"SYS_SETTIMEOFDAY":                             true,
+		"SYS_SETUID":                                   true,
+		"SYS_SETUID32":                                 true,
+		"SYS_SETWGROUPS":                               true,
+		"SYS_SETXATTR":                                 true,
+		"SYS_SET_MEMPOLICY":                            true,
+		"SYS_SET_ROBUST_LIST":                          true,
+		"SYS_SET_THREAD_AREA":                          true,
+		"SYS_SET_TID_ADDRESS":                          true,
+		"SYS_SGETMASK":                                 true,
+		"SYS_SHARED_REGION_CHECK_NP":                   true,
+		"SYS_SHARED_REGION_MAP_AND_SLIDE_NP":           true,
+		"SYS_SHMAT":                                    true,
+		"SYS_SHMCTL":                                   true,
+		"SYS_SHMDT":                                    true,
+		"SYS_SHMGET":                                   true,
+		"SYS_SHMSYS":                                   true,
+		"SYS_SHM_OPEN":                                 true,
+		"SYS_SHM_UNLINK":                               true,
+		"SYS_SHUTDOWN":                                 true,
+		"SYS_SIGACTION":                                true,
+		"SYS_SIGALTSTACK":                              true,
+		"SYS_SIGNAL":                                   true,
+		"SYS_SIGNALFD":                                 true,
+		"SYS_SIGNALFD4":                                true,
+		"SYS_SIGPENDING":                               true,
+		"SYS_SIGPROCMASK":                              true,
+		"SYS_SIGQUEUE":                                 true,
+		"SYS_SIGQUEUEINFO":                             true,
+		"SYS_SIGRETURN":                                true,
+		"SYS_SIGSUSPEND":                               true,
+		"SYS_SIGSUSPEND_NOCANCEL":                      true,
+		"SYS_SIGTIMEDWAIT":                             true,
+		"SYS_SIGWAIT":                                  true,
+		"SYS_SIGWAITINFO":                              true,
+		"SYS_SOCKET":                                   true,
+		"SYS_SOCKETCALL":                               true,
+		"SYS_SOCKETPAIR":                               true,
+		"SYS_SPLICE":                                   true,
+		"SYS_SSETMASK":                                 true,
+		"SYS_SSTK":                                     true,
+		"SYS_STACK_SNAPSHOT":                           true,
+		"SYS_STAT":                                     true,
+		"SYS_STAT64":                                   true,
+		"SYS_STAT64_EXTENDED":                          true,
+		"SYS_STATFS":                                   true,
+		"SYS_STATFS64":                                 true,
+		"SYS_STATV":                                    true,
+		"SYS_STATVFS1":                                 true,
+		"SYS_STAT_EXTENDED":                            true,
+		"SYS_STIME":                                    true,
+		"SYS_STTY":                                     true,
+		"SYS_SWAPCONTEXT":                              true,
+		"SYS_SWAPCTL":                                  true,
+		"SYS_SWAPOFF":                                  true,
+		"SYS_SWAPON":                                   true,
+		"SYS_SYMLINK":                                  true,
+		"SYS_SYMLINKAT":                                true,
+		"SYS_SYNC":                                     true,
+		"SYS_SYNCFS":                                   true,
+		"SYS_SYNC_FILE_RANGE":                          true,
+		"SYS_SYSARCH":                                  true,
+		"SYS_SYSCALL":                                  true,
+		"SYS_SYSCALL_BASE":                             true,
+		"SYS_SYSFS":                                    true,
+		"SYS_SYSINFO":                                  true,
+		"SYS_SYSLOG":                                   true,
+		"SYS_TEE":                                      true,
+		"SYS_TGKILL":                                   true,
+		"SYS_THREAD_SELFID":                            true,
+		"SYS_THR_CREATE":                               true,
+		"SYS_THR_EXIT":                                 true,
+		"SYS_THR_KILL":                                 true,
+		"SYS_THR_KILL2":                                true,
+		"SYS_THR_NEW":                                  true,
+		"SYS_THR_SELF":                                 true,
+		"SYS_THR_SET_NAME":                             true,
+		"SYS_THR_SUSPEND":                              true,
+		"SYS_THR_WAKE":                                 true,
+		"SYS_TIME":                                     true,
+		"SYS_TIMERFD_CREATE":                           true,
+		"SYS_TIMERFD_GETTIME":                          true,
+		"SYS_TIMERFD_SETTIME":                          true,
+		"SYS_TIMER_CREATE":                             true,
+		"SYS_TIMER_DELETE":                             true,
+		"SYS_TIMER_GETOVERRUN":                         true,
+		"SYS_TIMER_GETTIME":                            true,
+		"SYS_TIMER_SETTIME":                            true,
+		"SYS_TIMES":                                    true,
+		"SYS_TKILL":                                    true,
+		"SYS_TRUNCATE":                                 true,
+		"SYS_TRUNCATE64":                               true,
+		"SYS_TUXCALL":                                  true,
+		"SYS_UGETRLIMIT":                               true,
+		"SYS_ULIMIT":                                   true,
+		"SYS_UMASK":                                    true,
+		"SYS_UMASK_EXTENDED":                           true,
+		"SYS_UMOUNT":                                   true,
+		"SYS_UMOUNT2":                                  true,
+		"SYS_UNAME":                                    true,
+		"SYS_UNDELETE":                                 true,
+		"SYS_UNLINK":                                   true,
+		"SYS_UNLINKAT":                                 true,
+		"SYS_UNMOUNT":                                  true,
+		"SYS_UNSHARE":                                  true,
+		"SYS_USELIB":                                   true,
+		"SYS_USTAT":                                    true,
+		"SYS_UTIME":                                    true,
+		"SYS_UTIMENSAT":                                true,
+		"SYS_UTIMES":                                   true,
+		"SYS_UTRACE":                                   true,
+		"SYS_UUIDGEN":                                  true,
+		"SYS_VADVISE":                                  true,
+		"SYS_VFORK":                                    true,
+		"SYS_VHANGUP":                                  true,
+		"SYS_VM86":                                     true,
+		"SYS_VM86OLD":                                  true,
+		"SYS_VMSPLICE":                                 true,
+		"SYS_VM_PRESSURE_MONITOR":                      true,
+		"SYS_VSERVER":                                  true,
+		"SYS_WAIT4":                                    true,
+		"SYS_WAIT4_NOCANCEL":                           true,
+		"SYS_WAIT6":                                    true,
+		"SYS_WAITEVENT":                                true,
+		"SYS_WAITID":                                   true,
+		"SYS_WAITID_NOCANCEL":                          true,
+		"SYS_WAITPID":                                  true,
+		"SYS_WATCHEVENT":                               true,
+		"SYS_WORKQ_KERNRETURN":                         true,
+		"SYS_WORKQ_OPEN":                               true,
+		"SYS_WRITE":                                    true,
+		"SYS_WRITEV":                                   true,
+		"SYS_WRITEV_NOCANCEL":                          true,
+		"SYS_WRITE_NOCANCEL":                           true,
+		"SYS_YIELD":                                    true,
+		"SYS__LLSEEK":                                  true,
+		"SYS__LWP_CONTINUE":                            true,
+		"SYS__LWP_CREATE":                              true,
+		"SYS__LWP_CTL":                                 true,
+		"SYS__LWP_DETACH":                              true,
+		"SYS__LWP_EXIT":                                true,
+		"SYS__LWP_GETNAME":                             true,
+		"SYS__LWP_GETPRIVATE":                          true,
+		"SYS__LWP_KILL":                                true,
+		"SYS__LWP_PARK":                                true,
+		"SYS__LWP_SELF":                                true,
+		"SYS__LWP_SETNAME":                             true,
+		"SYS__LWP_SETPRIVATE":                          true,
+		"SYS__LWP_SUSPEND":                             true,
+		"SYS__LWP_UNPARK":                              true,
+		"SYS__LWP_UNPARK_ALL":                          true,
+		"SYS__LWP_WAIT":                                true,
+		"SYS__LWP_WAKEUP":                              true,
+		"SYS__NEWSELECT":                               true,
+		"SYS__PSET_BIND":                               true,
+		"SYS__SCHED_GETAFFINITY":                       true,
+		"SYS__SCHED_GETPARAM":                          true,
+		"SYS__SCHED_SETAFFINITY":                       true,
+		"SYS__SCHED_SETPARAM":                          true,
+		"SYS__SYSCTL":                                  true,
+		"SYS__UMTX_LOCK":                               true,
+		"SYS__UMTX_OP":                                 true,
+		"SYS__UMTX_UNLOCK":                             true,
+		"SYS___ACL_ACLCHECK_FD":                        true,
+		"SYS___ACL_ACLCHECK_FILE":                      true,
+		"SYS___ACL_ACLCHECK_LINK":                      true,
+		"SYS___ACL_DELETE_FD":                          true,
+		"SYS___ACL_DELETE_FILE":                        true,
+		"SYS___ACL_DELETE_LINK":                        true,
+		"SYS___ACL_GET_FD":                             true,
+		"SYS___ACL_GET_FILE":                           true,
+		"SYS___ACL_GET_LINK":                           true,
+		"SYS___ACL_SET_FD":                             true,
+		"SYS___ACL_SET_FILE":                           true,
+		"SYS___ACL_SET_LINK":                           true,
+		"SYS___CLONE":                                  true,
+		"SYS___DISABLE_THREADSIGNAL":                   true,
+		"SYS___GETCWD":                                 true,
+		"SYS___GETLOGIN":                               true,
+		"SYS___GET_TCB":                                true,
+		"SYS___MAC_EXECVE":                             true,
+		"SYS___MAC_GETFSSTAT":                          true,
+		"SYS___MAC_GET_FD":                             true,
+		"SYS___MAC_GET_FILE":                           true,
+		"SYS___MAC_GET_LCID":                           true,
+		"SYS___MAC_GET_LCTX":                           true,
+		"SYS___MAC_GET_LINK":                           true,
+		"SYS___MAC_GET_MOUNT":                          true,
+		"SYS___MAC_GET_PID":                            true,
+		"SYS___MAC_GET_PROC":                           true,
+		"SYS___MAC_MOUNT":                              true,
+		"SYS___MAC_SET_FD":                             true,
+		"SYS___MAC_SET_FILE":                           true,
+		"SYS___MAC_SET_LCTX":                           true,
+		"SYS___MAC_SET_LINK":                           true,
+		"SYS___MAC_SET_PROC":                           true,
+		"SYS___MAC_SYSCALL":                            true,
+		"SYS___OLD_SEMWAIT_SIGNAL":                     true,
+		"SYS___OLD_SEMWAIT_SIGNAL_NOCANCEL":            true,
+		"SYS___POSIX_CHOWN":                            true,
+		"SYS___POSIX_FCHOWN":                           true,
+		"SYS___POSIX_LCHOWN":                           true,
+		"SYS___POSIX_RENAME":                           true,
+		"SYS___PTHREAD_CANCELED":                       true,
+		"SYS___PTHREAD_CHDIR":                          true,
+		"SYS___PTHREAD_FCHDIR":                         true,
+		"SYS___PTHREAD_KILL":                           true,
+		"SYS___PTHREAD_MARKCANCEL":                     true,
+		"SYS___PTHREAD_SIGMASK":                        true,
+		"SYS___QUOTACTL":                               true,
+		"SYS___SEMCTL":                                 true,
+		"SYS___SEMWAIT_SIGNAL":                         true,
+		"SYS___SEMWAIT_SIGNAL_NOCANCEL":                true,
+		"SYS___SETLOGIN":                               true,
+		"SYS___SETUGID":                                true,
+		"SYS___SET_TCB":                                true,
+		"SYS___SIGACTION_SIGTRAMP":                     true,
+		"SYS___SIGTIMEDWAIT":                           true,
+		"SYS___SIGWAIT":                                true,
+		"SYS___SIGWAIT_NOCANCEL":                       true,
+		"SYS___SYSCTL":                                 true,
+		"SYS___TFORK":                                  true,
+		"SYS___THREXIT":                                true,
+		"SYS___THRSIGDIVERT":                           true,
+		"SYS___THRSLEEP":                               true,
+		"SYS___THRWAKEUP":                              true,
+		"S_ARCH1":                                      true,
+		"S_ARCH2":                                      true,
+		"S_BLKSIZE":                                    true,
+		"S_IEXEC":                                      true,
+		"S_IFBLK":                                      true,
+		"S_IFCHR":                                      true,
+		"S_IFDIR":                                      true,
+		"S_IFIFO":                                      true,
+		"S_IFLNK":                                      true,
+		"S_IFMT":                                       true,
+		"S_IFREG":                                      true,
+		"S_IFSOCK":                                     true,
+		"S_IFWHT":                                      true,
+		"S_IREAD":                                      true,
+		"S_IRGRP":                                      true,
+		"S_IROTH":                                      true,
+		"S_IRUSR":                                      true,
+		"S_IRWXG":                                      true,
+		"S_IRWXO":                                      true,
+		"S_IRWXU":                                      true,
+		"S_ISGID":                                      true,
+		"S_ISTXT":                                      true,
+		"S_ISUID":                                      true,
+		"S_ISVTX":                                      true,
+		"S_IWGRP":                                      true,
+		"S_IWOTH":                                      true,
+		"S_IWRITE":                                     true,
+		"S_IWUSR":                                      true,
+		"S_IXGRP":                                      true,
+		"S_IXOTH":                                      true,
+		"S_IXUSR":                                      true,
+		"S_LOGIN_SET":                                  true,
+		"SecurityAttributes":                           true,
+		"Seek":                                         true,
+		"Select":                                       true,
+		"Sendfile":                                     true,
+		"Sendmsg":                                      true,
+		"SendmsgN":                                     true,
+		"Sendto":                                       true,
+		"Servent":                                      true,
+		"SetBpf":                                       true,
+		"SetBpfBuflen":                                 true,
+		"SetBpfDatalink":                               true,
+		"SetBpfHeadercmpl":                             true,
+		"SetBpfImmediate":                              true,
+		"SetBpfInterface":                              true,
+		"SetBpfPromisc":                                true,
+		"SetBpfTimeout":                                true,
+		"SetCurrentDirectory":                          true,
+		"SetEndOfFile":                                 true,
+		"SetEnvironmentVariable":                       true,
+		"SetFileAttributes":                            true,
+		"SetFileCompletionNotificationModes":           true,
+		"SetFilePointer":                               true,
+		"SetFileTime":                                  true,
+		"SetHandleInformation":                         true,
+		"SetKevent":                                    true,
+		"SetLsfPromisc":                                true,
+		"SetNonblock":                                  true,
+		"Setdomainname":                                true,
+		"Setegid":                                      true,
+		"Setenv":                                       true,
+		"Seteuid":                                      true,
+		"Setfsgid":                                     true,
+		"Setfsuid":                                     true,
+		"Setgid":                                       true,
+		"Setgroups":                                    true,
+		"Sethostname":                                  true,
+		"Setlogin":                                     true,
+		"Setpgid":                                      true,
+		"Setpriority":                                  true,
+		"Setprivexec":                                  true,
+		"Setregid":                                     true,
+		"Setresgid":                                    true,
+		"Setresuid":                                    true,
+		"Setreuid":                                     true,
+		"Setrlimit":                                    true,
+		"Setsid":                                       true,
+		"Setsockopt":                                   true,
+		"SetsockoptByte":                               true,
+		"SetsockoptICMPv6Filter":                       true,
+		"SetsockoptIPMreq":                             true,
+		"SetsockoptIPMreqn":                            true,
+		"SetsockoptIPv6Mreq":                           true,
+		"SetsockoptInet4Addr":                          true,
+		"SetsockoptInt":                                true,
+		"SetsockoptLinger":                             true,
+		"SetsockoptString":                             true,
+		"SetsockoptTimeval":                            true,
+		"Settimeofday":                                 true,
+		"Setuid":                                       true,
+		"Setxattr":                                     true,
+		"Shutdown":                                     true,
+		"SidTypeAlias":                                 true,
+		"SidTypeComputer":                              true,
+		"SidTypeDeletedAccount":                        true,
+		"SidTypeDomain":                                true,
+		"SidTypeGroup":                                 true,
+		"SidTypeInvalid":                               true,
+		"SidTypeLabel":                                 true,
+		"SidTypeUnknown":                               true,
+		"SidTypeUser":                                  true,
+		"SidTypeWellKnownGroup":                        true,
+		"Signal":                                       true,
+		"SizeofBpfHdr":                                 true,
+		"SizeofBpfInsn":                                true,
+		"SizeofBpfProgram":                             true,
+		"SizeofBpfStat":                                true,
+		"SizeofBpfVersion":                             true,
+		"SizeofBpfZbuf":                                true,
+		"SizeofBpfZbufHeader":                          true,
+		"SizeofCmsghdr":                                true,
+		"SizeofICMPv6Filter":                           true,
+		"SizeofIPMreq":                                 true,
+		"SizeofIPMreqn":                                true,
+		"SizeofIPv6MTUInfo":                            true,
+		"SizeofIPv6Mreq":                               true,
+		"SizeofIfAddrmsg":                              true,
+		"SizeofIfAnnounceMsghdr":                       true,
+		"SizeofIfData":                                 true,
+		"SizeofIfInfomsg":                              true,
+		"SizeofIfMsghdr":                               true,
+		"SizeofIfaMsghdr":                              true,
+		"SizeofIfmaMsghdr":                             true,
+		"SizeofIfmaMsghdr2":                            true,
+		"SizeofInet4Pktinfo":                           true,
+		"SizeofInet6Pktinfo":                           true,
+		"SizeofInotifyEvent":                           true,
+		"SizeofLinger":                                 true,
+		"SizeofMsghdr":                                 true,
+		"SizeofNlAttr":                                 true,
+		"SizeofNlMsgerr":                               true,
+		"SizeofNlMsghdr":                               true,
+		"SizeofRtAttr":                                 true,
+		"SizeofRtGenmsg":                               true,
+		"SizeofRtMetrics":                              true,
+		"SizeofRtMsg":                                  true,
+		"SizeofRtMsghdr":                               true,
+		"SizeofRtNexthop":                              true,
+		"SizeofSockFilter":                             true,
+		"SizeofSockFprog":                              true,
+		"SizeofSockaddrAny":                            true,
+		"SizeofSockaddrDatalink":                       true,
+		"SizeofSockaddrInet4":                          true,
+		"SizeofSockaddrInet6":                          true,
+		"SizeofSockaddrLinklayer":                      true,
+		"SizeofSockaddrNetlink":                        true,
+		"SizeofSockaddrUnix":                           true,
+		"SizeofTCPInfo":                                true,
+		"SizeofUcred":                                  true,
+		"SlicePtrFromStrings":                          true,
+		"SockFilter":                                   true,
+		"SockFprog":                                    true,
+		"SockaddrDatalink":                             true,
+		"SockaddrGen":                                  true,
+		"SockaddrInet4":                                true,
+		"SockaddrInet6":                                true,
+		"SockaddrLinklayer":                            true,
+		"SockaddrNetlink":                              true,
+		"SockaddrUnix":                                 true,
+		"Socket":                                       true,
+		"SocketControlMessage":                         true,
+		"SocketDisableIPv6":                            true,
+		"Socketpair":                                   true,
+		"Splice":                                       true,
+		"StartProcess":                                 true,
+		"StartupInfo":                                  true,
+		"Stat":                                         true,
+		"Stat_t":                                       true,
+		"Statfs":                                       true,
+		"Statfs_t":                                     true,
+		"Stderr":                                       true,
+		"Stdin":                                        true,
+		"Stdout":                                       true,
+		"StringBytePtr":                                true,
+		"StringByteSlice":                              true,
+		"StringSlicePtr":                               true,
+		"StringToSid":                                  true,
+		"StringToUTF16":                                true,
+		"StringToUTF16Ptr":                             true,
+		"Symlink":                                      true,
+		"Sync":                                         true,
+		"SyncFileRange":                                true,
+		"SysProcAttr":                                  true,
+		"SysProcIDMap":                                 true,
+		"Syscall":                                      true,
+		"Syscall12":                                    true,
+		"Syscall15":                                    true,
+		"Syscall18":                                    true,
+		"Syscall6":                                     true,
+		"Syscall9":                                     true,
+		"Sysctl":                                       true,
+		"SysctlUint32":                                 true,
+		"Sysctlnode":                                   true,
+		"Sysinfo":                                      true,
+		"Sysinfo_t":                                    true,
+		"Systemtime":                                   true,
+		"TCGETS":                                       true,
+		"TCIFLUSH":                                     true,
+		"TCIOFLUSH":                                    true,
+		"TCOFLUSH":                                     true,
+		"TCPInfo":                                      true,
+		"TCPKeepalive":                                 true,
+		"TCP_CA_NAME_MAX":                              true,
+		"TCP_CONGCTL":                                  true,
+		"TCP_CONGESTION":                               true,
+		"TCP_CONNECTIONTIMEOUT":                        true,
+		"TCP_CORK":                                     true,
+		"TCP_DEFER_ACCEPT":                             true,
+		"TCP_INFO":                                     true,
+		"TCP_KEEPALIVE":                                true,
+		"TCP_KEEPCNT":                                  true,
+		"TCP_KEEPIDLE":                                 true,
+		"TCP_KEEPINIT":                                 true,
+		"TCP_KEEPINTVL":                                true,
+		"TCP_LINGER2":                                  true,
+		"TCP_MAXBURST":                                 true,
+		"TCP_MAXHLEN":                                  true,
+		"TCP_MAXOLEN":                                  true,
+		"TCP_MAXSEG":                                   true,
+		"TCP_MAXWIN":                                   true,
+		"TCP_MAX_SACK":                                 true,
+		"TCP_MAX_WINSHIFT":                             true,
+		"TCP_MD5SIG":                                   true,
+		"TCP_MD5SIG_MAXKEYLEN":                         true,
+		"TCP_MINMSS":                                   true,
+		"TCP_MINMSSOVERLOAD":                           true,
+		"TCP_MSS":                                      true,
+		"TCP_NODELAY":                                  true,
+		"TCP_NOOPT":                                    true,
+		"TCP_NOPUSH":                                   true,
+		"TCP_NSTATES":                                  true,
+		"TCP_QUICKACK":                                 true,
+		"TCP_RXT_CONNDROPTIME":                         true,
+		"TCP_RXT_FINDROP":                              true,
+		"TCP_SACK_ENABLE":                              true,
+		"TCP_SYNCNT":                                   true,
+		"TCP_VENDOR":                                   true,
+		"TCP_WINDOW_CLAMP":                             true,
+		"TCSAFLUSH":                                    true,
+		"TCSETS":                                       true,
+		"TF_DISCONNECT":                                true,
+		"TF_REUSE_SOCKET":                              true,
+		"TF_USE_DEFAULT_WORKER":                        true,
+		"TF_USE_KERNEL_APC":                            true,
+		"TF_USE_SYSTEM_THREAD":                         true,
+		"TF_WRITE_BEHIND":                              true,
+		"TH32CS_INHERIT":                               true,
+		"TH32CS_SNAPALL":                               true,
+		"TH32CS_SNAPHEAPLIST":                          true,
+		"TH32CS_SNAPMODULE":                            true,
+		"TH32CS_SNAPMODULE32":                          true,
+		"TH32CS_SNAPPROCESS":                           true,
+		"TH32CS_SNAPTHREAD":                            true,
+		"TIME_ZONE_ID_DAYLIGHT":                        true,
+		"TIME_ZONE_ID_STANDARD":                        true,
+		"TIME_ZONE_ID_UNKNOWN":                         true,
+		"TIOCCBRK":                                     true,
+		"TIOCCDTR":                                     true,
+		"TIOCCONS":                                     true,
+		"TIOCDCDTIMESTAMP":                             true,
+		"TIOCDRAIN":                                    true,
+		"TIOCDSIMICROCODE":                             true,
+		"TIOCEXCL":                                     true,
+		"TIOCEXT":                                      true,
+		"TIOCFLAG_CDTRCTS":                             true,
+		"TIOCFLAG_CLOCAL":                              true,
+		"TIOCFLAG_CRTSCTS":                             true,
+		"TIOCFLAG_MDMBUF":                              true,
+		"TIOCFLAG_PPS":                                 true,
+		"TIOCFLAG_SOFTCAR":                             true,
+		"TIOCFLUSH":                                    true,
+		"TIOCGDEV":                                     true,
+		"TIOCGDRAINWAIT":                               true,
+		"TIOCGETA":                                     true,
+		"TIOCGETD":                                     true,
+		"TIOCGFLAGS":                                   true,
+		"TIOCGICOUNT":                                  true,
+		"TIOCGLCKTRMIOS":                               true,
+		"TIOCGLINED":                                   true,
+		"TIOCGPGRP":                                    true,
+		"TIOCGPTN":                                     true,
+		"TIOCGQSIZE":                                   true,
+		"TIOCGRANTPT":                                  true,
+		"TIOCGRS485":                                   true,
+		"TIOCGSERIAL":                                  true,
+		"TIOCGSID":                                     true,
+		"TIOCGSIZE":                                    true,
+		"TIOCGSOFTCAR":                                 true,
+		"TIOCGTSTAMP":                                  true,
+		"TIOCGWINSZ":                                   true,
+		"TIOCINQ":                                      true,
+		"TIOCIXOFF":                                    true,
+		"TIOCIXON":                                     true,
+		"TIOCLINUX":                                    true,
+		"TIOCMBIC":                                     true,
+		"TIOCMBIS":                                     true,
+		"TIOCMGDTRWAIT":                                true,
+		"TIOCMGET":                                     true,
+		"TIOCMIWAIT":                                   true,
+		"TIOCMODG":                                     true,
+		"TIOCMODS":                                     true,
+		"TIOCMSDTRWAIT":                                true,
+		"TIOCMSET":                                     true,
+		"TIOCM_CAR":                                    true,
+		"TIOCM_CD":                                     true,
+		"TIOCM_CTS":                                    true,
+		"TIOCM_DCD":                                    true,
+		"TIOCM_DSR":                                    true,
+		"TIOCM_DTR":                                    true,
+		"TIOCM_LE":                                     true,
+		"TIOCM_RI":                                     true,
+		"TIOCM_RNG":                                    true,
+		"TIOCM_RTS":                                    true,
+		"TIOCM_SR":                                     true,
+		"TIOCM_ST":                                     true,
+		"TIOCNOTTY":                                    true,
+		"TIOCNXCL":                                     true,
+		"TIOCOUTQ":                                     true,
+		"TIOCPKT":                                      true,
+		"TIOCPKT_DATA":                                 true,
+		"TIOCPKT_DOSTOP":                               true,
+		"TIOCPKT_FLUSHREAD":                            true,
+		"TIOCPKT_FLUSHWRITE":                           true,
+		"TIOCPKT_IOCTL":                                true,
+		"TIOCPKT_NOSTOP":                               true,
+		"TIOCPKT_START":                                true,
+		"TIOCPKT_STOP":                                 true,
+		"TIOCPTMASTER":                                 true,
+		"TIOCPTMGET":                                   true,
+		"TIOCPTSNAME":                                  true,
+		"TIOCPTYGNAME":                                 true,
+		"TIOCPTYGRANT":                                 true,
+		"TIOCPTYUNLK":                                  true,
+		"TIOCRCVFRAME":                                 true,
+		"TIOCREMOTE":                                   true,
+		"TIOCSBRK":                                     true,
+		"TIOCSCONS":                                    true,
+		"TIOCSCTTY":                                    true,
+		"TIOCSDRAINWAIT":                               true,
+		"TIOCSDTR":                                     true,
+		"TIOCSERCONFIG":                                true,
+		"TIOCSERGETLSR":                                true,
+		"TIOCSERGETMULTI":                              true,
+		"TIOCSERGSTRUCT":                               true,
+		"TIOCSERGWILD":                                 true,
+		"TIOCSERSETMULTI":                              true,
+		"TIOCSERSWILD":                                 true,
+		"TIOCSER_TEMT":                                 true,
+		"TIOCSETA":                                     true,
+		"TIOCSETAF":                                    true,
+		"TIOCSETAW":                                    true,
+		"TIOCSETD":                                     true,
+		"TIOCSFLAGS":                                   true,
+		"TIOCSIG":                                      true,
+		"TIOCSLCKTRMIOS":                               true,
+		"TIOCSLINED":                                   true,
+		"TIOCSPGRP":                                    true,
+		"TIOCSPTLCK":                                   true,
+		"TIOCSQSIZE":                                   true,
+		"TIOCSRS485":                                   true,
+		"TIOCSSERIAL":                                  true,
+		"TIOCSSIZE":                                    true,
+		"TIOCSSOFTCAR":                                 true,
+		"TIOCSTART":                                    true,
+		"TIOCSTAT":                                     true,
+		"TIOCSTI":                                      true,
+		"TIOCSTOP":                                     true,
+		"TIOCSTSTAMP":                                  true,
+		"TIOCSWINSZ":                                   true,
+		"TIOCTIMESTAMP":                                true,
+		"TIOCUCNTL":                                    true,
+		"TIOCVHANGUP":                                  true,
+		"TIOCXMTFRAME":                                 true,
+		"TOKEN_ADJUST_DEFAULT":                         true,
+		"TOKEN_ADJUST_GROUPS":                          true,
+		"TOKEN_ADJUST_PRIVILEGES":                      true,
+		"TOKEN_ADJUST_SESSIONID":                       true,
+		"TOKEN_ALL_ACCESS":                             true,
+		"TOKEN_ASSIGN_PRIMARY":                         true,
+		"TOKEN_DUPLICATE":                              true,
+		"TOKEN_EXECUTE":                                true,
+		"TOKEN_IMPERSONATE":                            true,
+		"TOKEN_QUERY":                                  true,
+		"TOKEN_QUERY_SOURCE":                           true,
+		"TOKEN_READ":                                   true,
+		"TOKEN_WRITE":                                  true,
+		"TOSTOP":                                       true,
+		"TRUNCATE_EXISTING":                            true,
+		"TUNATTACHFILTER":                              true,
+		"TUNDETACHFILTER":                              true,
+		"TUNGETFEATURES":                               true,
+		"TUNGETIFF":                                    true,
+		"TUNGETSNDBUF":                                 true,
+		"TUNGETVNETHDRSZ":                              true,
+		"TUNSETDEBUG":                                  true,
+		"TUNSETGROUP":                                  true,
+		"TUNSETIFF":                                    true,
+		"TUNSETLINK":                                   true,
+		"TUNSETNOCSUM":                                 true,
+		"TUNSETOFFLOAD":                                true,
+		"TUNSETOWNER":                                  true,
+		"TUNSETPERSIST":                                true,
+		"TUNSETSNDBUF":                                 true,
+		"TUNSETTXFILTER":                               true,
+		"TUNSETVNETHDRSZ":                              true,
+		"Tee":                                          true,
+		"TerminateProcess":                             true,
+		"Termios":                                      true,
+		"Tgkill":                                       true,
+		"Time":                                         true,
+		"Time_t":                                       true,
+		"Times":                                        true,
+		"Timespec":                                     true,
+		"TimespecToNsec":                               true,
+		"Timeval":                                      true,
+		"Timeval32":                                    true,
+		"TimevalToNsec":                                true,
+		"Timex":                                        true,
+		"Timezoneinformation":                          true,
+		"Tms":                                          true,
+		"Token":                                        true,
+		"TokenAccessInformation":                       true,
+		"TokenAuditPolicy":                             true,
+		"TokenDefaultDacl":                             true,
+		"TokenElevation":                               true,
+		"TokenElevationType":                           true,
+		"TokenGroups":                                  true,
+		"TokenGroupsAndPrivileges":                     true,
+		"TokenHasRestrictions":                         true,
+		"TokenImpersonationLevel":                      true,
+		"TokenIntegrityLevel":                          true,
+		"TokenLinkedToken":                             true,
+		"TokenLogonSid":                                true,
+		"TokenMandatoryPolicy":                         true,
+		"TokenOrigin":                                  true,
+		"TokenOwner":                                   true,
+		"TokenPrimaryGroup":                            true,
+		"TokenPrivileges":                              true,
+		"TokenRestrictedSids":                          true,
+		"TokenSandBoxInert":                            true,
+		"TokenSessionId":                               true,
+		"TokenSessionReference":                        true,
+		"TokenSource":                                  true,
+		"TokenStatistics":                              true,
+		"TokenType":                                    true,
+		"TokenUIAccess":                                true,
+		"TokenUser":                                    true,
+		"TokenVirtualizationAllowed":                   true,
+		"TokenVirtualizationEnabled":                   true,
+		"Tokenprimarygroup":                            true,
+		"Tokenuser":                                    true,
+		"TranslateAccountName":                         true,
+		"TranslateName":                                true,
+		"TransmitFile":                                 true,
+		"TransmitFileBuffers":                          true,
+		"Truncate":                                     true,
+		"UNIX_PATH_MAX":                                true,
+		"USAGE_MATCH_TYPE_AND":                         true,
+		"USAGE_MATCH_TYPE_OR":                          true,
+		"UTF16FromString":                              true,
+		"UTF16PtrFromString":                           true,
+		"UTF16ToString":                                true,
+		"Ucred":                                        true,
+		"Umask":                                        true,
+		"Uname":                                        true,
+		"Undelete":                                     true,
+		"UnixCredentials":                              true,
+		"UnixRights":                                   true,
+		"Unlink":                                       true,
+		"Unlinkat":                                     true,
+		"UnmapViewOfFile":                              true,
+		"Unmount":                                      true,
+		"Unsetenv":                                     true,
+		"Unshare":                                      true,
+		"UserInfo10":                                   true,
+		"Ustat":                                        true,
+		"Ustat_t":                                      true,
+		"Utimbuf":                                      true,
+		"Utime":                                        true,
+		"Utimes":                                       true,
+		"UtimesNano":                                   true,
+		"Utsname":                                      true,
+		"VDISCARD":                                     true,
+		"VDSUSP":                                       true,
+		"VEOF":                                         true,
+		"VEOL":                                         true,
+		"VEOL2":                                        true,
+		"VERASE":                                       true,
+		"VERASE2":                                      true,
+		"VINTR":                                        true,
+		"VKILL":                                        true,
+		"VLNEXT":                                       true,
+		"VMIN":                                         true,
+		"VQUIT":                                        true,
+		"VREPRINT":                                     true,
+		"VSTART":                                       true,
+		"VSTATUS":                                      true,
+		"VSTOP":                                        true,
+		"VSUSP":                                        true,
+		"VSWTC":                                        true,
+		"VT0":                                          true,
+		"VT1":                                          true,
+		"VTDLY":                                        true,
+		"VTIME":                                        true,
+		"VWERASE":                                      true,
+		"VirtualLock":                                  true,
+		"VirtualUnlock":                                true,
+		"WAIT_ABANDONED":                               true,
+		"WAIT_FAILED":                                  true,
+		"WAIT_OBJECT_0":                                true,
+		"WAIT_TIMEOUT":                                 true,
+		"WALL":                                         true,
+		"WALLSIG":                                      true,
+		"WALTSIG":                                      true,
+		"WCLONE":                                       true,
+		"WCONTINUED":                                   true,
+		"WCOREFLAG":                                    true,
+		"WEXITED":                                      true,
+		"WLINUXCLONE":                                  true,
+		"WNOHANG":                                      true,
+		"WNOTHREAD":                                    true,
+		"WNOWAIT":                                      true,
+		"WNOZOMBIE":                                    true,
+		"WOPTSCHECKED":                                 true,
+		"WORDSIZE":                                     true,
+		"WSABuf":                                       true,
+		"WSACleanup":                                   true,
+		"WSADESCRIPTION_LEN":                           true,
+		"WSAData":                                      true,
+		"WSAEACCES":                                    true,
+		"WSAECONNABORTED":                              true,
+		"WSAECONNRESET":                                true,
+		"WSAEnumProtocols":                             true,
+		"WSAID_CONNECTEX":                              true,
+		"WSAIoctl":                                     true,
+		"WSAPROTOCOL_LEN":                              true,
+		"WSAProtocolChain":                             true,
+		"WSAProtocolInfo":                              true,
+		"WSARecv":                                      true,
+		"WSARecvFrom":                                  true,
+		"WSASYS_STATUS_LEN":                            true,
+		"WSASend":                                      true,
+		"WSASendTo":                                    true,
+		"WSASendto":                                    true,
+		"WSAStartup":                                   true,
+		"WSTOPPED":                                     true,
+		"WTRAPPED":                                     true,
+		"WUNTRACED":                                    true,
+		"Wait4":                                        true,
+		"WaitForSingleObject":                          true,
+		"WaitStatus":                                   true,
+		"Win32FileAttributeData":                       true,
+		"Win32finddata":                                true,
+		"Write":                                        true,
+		"WriteConsole":                                 true,
+		"WriteFile":                                    true,
+		"X509_ASN_ENCODING":                            true,
+		"XCASE":                                        true,
+		"XP1_CONNECTIONLESS":                           true,
+		"XP1_CONNECT_DATA":                             true,
+		"XP1_DISCONNECT_DATA":                          true,
+		"XP1_EXPEDITED_DATA":                           true,
+		"XP1_GRACEFUL_CLOSE":                           true,
+		"XP1_GUARANTEED_DELIVERY":                      true,
+		"XP1_GUARANTEED_ORDER":                         true,
+		"XP1_IFS_HANDLES":                              true,
+		"XP1_MESSAGE_ORIENTED":                         true,
+		"XP1_MULTIPOINT_CONTROL_PLANE":                 true,
+		"XP1_MULTIPOINT_DATA_PLANE":                    true,
+		"XP1_PARTIAL_MESSAGE":                          true,
+		"XP1_PSEUDO_STREAM":                            true,
+		"XP1_QOS_SUPPORTED":                            true,
+		"XP1_SAN_SUPPORT_SDP":                          true,
+		"XP1_SUPPORT_BROADCAST":                        true,
+		"XP1_SUPPORT_MULTIPOINT":                       true,
+		"XP1_UNI_RECV":                                 true,
+		"XP1_UNI_SEND":                                 true,
+	},
+	"syscall/js": map[string]bool{
+		"Error":         true,
+		"Func":          true,
+		"FuncOf":        true,
+		"Global":        true,
+		"Null":          true,
+		"Type":          true,
+		"TypeBoolean":   true,
+		"TypeFunction":  true,
+		"TypeNull":      true,
+		"TypeNumber":    true,
+		"TypeObject":    true,
+		"TypeString":    true,
+		"TypeSymbol":    true,
+		"TypeUndefined": true,
+		"TypedArray":    true,
+		"TypedArrayOf":  true,
+		"Undefined":     true,
+		"Value":         true,
+		"ValueError":    true,
+		"ValueOf":       true,
+		"Wrapper":       true,
+	},
+	"testing": map[string]bool{
+		"AllocsPerRun":      true,
+		"B":                 true,
+		"Benchmark":         true,
+		"BenchmarkResult":   true,
+		"Cover":             true,
+		"CoverBlock":        true,
+		"CoverMode":         true,
+		"Coverage":          true,
+		"InternalBenchmark": true,
+		"InternalExample":   true,
+		"InternalTest":      true,
+		"M":                 true,
+		"Main":              true,
+		"MainStart":         true,
+		"PB":                true,
+		"RegisterCover":     true,
+		"RunBenchmarks":     true,
+		"RunExamples":       true,
+		"RunTests":          true,
+		"Short":             true,
+		"T":                 true,
+		"Verbose":           true,
+	},
+	"testing/iotest": map[string]bool{
+		"DataErrReader":  true,
+		"ErrTimeout":     true,
+		"HalfReader":     true,
+		"NewReadLogger":  true,
+		"NewWriteLogger": true,
+		"OneByteReader":  true,
+		"TimeoutReader":  true,
+		"TruncateWriter": true,
+	},
+	"testing/quick": map[string]bool{
+		"Check":           true,
+		"CheckEqual":      true,
+		"CheckEqualError": true,
+		"CheckError":      true,
+		"Config":          true,
+		"Generator":       true,
+		"SetupError":      true,
+		"Value":           true,
+	},
+	"text/scanner": map[string]bool{
+		"Char":           true,
+		"Comment":        true,
+		"EOF":            true,
+		"Float":          true,
+		"GoTokens":       true,
+		"GoWhitespace":   true,
+		"Ident":          true,
+		"Int":            true,
+		"Position":       true,
+		"RawString":      true,
+		"ScanChars":      true,
+		"ScanComments":   true,
+		"ScanFloats":     true,
+		"ScanIdents":     true,
+		"ScanInts":       true,
+		"ScanRawStrings": true,
+		"ScanStrings":    true,
+		"Scanner":        true,
+		"SkipComments":   true,
+		"String":         true,
+		"TokenString":    true,
+	},
+	"text/tabwriter": map[string]bool{
+		"AlignRight":          true,
+		"Debug":               true,
+		"DiscardEmptyColumns": true,
+		"Escape":              true,
+		"FilterHTML":          true,
+		"NewWriter":           true,
+		"StripEscape":         true,
+		"TabIndent":           true,
+		"Writer":              true,
+	},
+	"text/template": map[string]bool{
+		"ExecError":        true,
+		"FuncMap":          true,
+		"HTMLEscape":       true,
+		"HTMLEscapeString": true,
+		"HTMLEscaper":      true,
+		"IsTrue":           true,
+		"JSEscape":         true,
+		"JSEscapeString":   true,
+		"JSEscaper":        true,
+		"Must":             true,
+		"New":              true,
+		"ParseFiles":       true,
+		"ParseGlob":        true,
+		"Template":         true,
+		"URLQueryEscaper":  true,
+	},
+	"text/template/parse": map[string]bool{
+		"ActionNode":     true,
+		"BoolNode":       true,
+		"BranchNode":     true,
+		"ChainNode":      true,
+		"CommandNode":    true,
+		"DotNode":        true,
+		"FieldNode":      true,
+		"IdentifierNode": true,
+		"IfNode":         true,
+		"IsEmptyTree":    true,
+		"ListNode":       true,
+		"New":            true,
+		"NewIdentifier":  true,
+		"NilNode":        true,
+		"Node":           true,
+		"NodeAction":     true,
+		"NodeBool":       true,
+		"NodeChain":      true,
+		"NodeCommand":    true,
+		"NodeDot":        true,
+		"NodeField":      true,
+		"NodeIdentifier": true,
+		"NodeIf":         true,
+		"NodeList":       true,
+		"NodeNil":        true,
+		"NodeNumber":     true,
+		"NodePipe":       true,
+		"NodeRange":      true,
+		"NodeString":     true,
+		"NodeTemplate":   true,
+		"NodeText":       true,
+		"NodeType":       true,
+		"NodeVariable":   true,
+		"NodeWith":       true,
+		"NumberNode":     true,
+		"Parse":          true,
+		"PipeNode":       true,
+		"Pos":            true,
+		"RangeNode":      true,
+		"StringNode":     true,
+		"TemplateNode":   true,
+		"TextNode":       true,
+		"Tree":           true,
+		"VariableNode":   true,
+		"WithNode":       true,
+	},
+	"time": map[string]bool{
+		"ANSIC":                  true,
+		"After":                  true,
+		"AfterFunc":              true,
+		"April":                  true,
+		"August":                 true,
+		"Date":                   true,
+		"December":               true,
+		"Duration":               true,
+		"February":               true,
+		"FixedZone":              true,
+		"Friday":                 true,
+		"Hour":                   true,
+		"January":                true,
+		"July":                   true,
+		"June":                   true,
+		"Kitchen":                true,
+		"LoadLocation":           true,
+		"LoadLocationFromTZData": true,
+		"Local":                  true,
+		"Location":               true,
+		"March":                  true,
+		"May":                    true,
+		"Microsecond":            true,
+		"Millisecond":            true,
+		"Minute":                 true,
+		"Monday":                 true,
+		"Month":                  true,
+		"Nanosecond":             true,
+		"NewTicker":              true,
+		"NewTimer":               true,
+		"November":               true,
+		"Now":                    true,
+		"October":                true,
+		"Parse":                  true,
+		"ParseDuration":          true,
+		"ParseError":             true,
+		"ParseInLocation":        true,
+		"RFC1123":                true,
+		"RFC1123Z":               true,
+		"RFC3339":                true,
+		"RFC3339Nano":            true,
+		"RFC822":                 true,
+		"RFC822Z":                true,
+		"RFC850":                 true,
+		"RubyDate":               true,
+		"Saturday":               true,
+		"Second":                 true,
+		"September":              true,
+		"Since":                  true,
+		"Sleep":                  true,
+		"Stamp":                  true,
+		"StampMicro":             true,
+		"StampMilli":             true,
+		"StampNano":              true,
+		"Sunday":                 true,
+		"Thursday":               true,
+		"Tick":                   true,
+		"Ticker":                 true,
+		"Time":                   true,
+		"Timer":                  true,
+		"Tuesday":                true,
+		"UTC":                    true,
+		"Unix":                   true,
+		"UnixDate":               true,
+		"Until":                  true,
+		"Wednesday":              true,
+		"Weekday":                true,
+	},
+	"unicode": map[string]bool{
+		"ASCII_Hex_Digit":                    true,
+		"Adlam":                              true,
+		"Ahom":                               true,
+		"Anatolian_Hieroglyphs":              true,
+		"Arabic":                             true,
+		"Armenian":                           true,
+		"Avestan":                            true,
+		"AzeriCase":                          true,
+		"Balinese":                           true,
+		"Bamum":                              true,
+		"Bassa_Vah":                          true,
+		"Batak":                              true,
+		"Bengali":                            true,
+		"Bhaiksuki":                          true,
+		"Bidi_Control":                       true,
+		"Bopomofo":                           true,
+		"Brahmi":                             true,
+		"Braille":                            true,
+		"Buginese":                           true,
+		"Buhid":                              true,
+		"C":                                  true,
+		"Canadian_Aboriginal":                true,
+		"Carian":                             true,
+		"CaseRange":                          true,
+		"CaseRanges":                         true,
+		"Categories":                         true,
+		"Caucasian_Albanian":                 true,
+		"Cc":                                 true,
+		"Cf":                                 true,
+		"Chakma":                             true,
+		"Cham":                               true,
+		"Cherokee":                           true,
+		"Co":                                 true,
+		"Common":                             true,
+		"Coptic":                             true,
+		"Cs":                                 true,
+		"Cuneiform":                          true,
+		"Cypriot":                            true,
+		"Cyrillic":                           true,
+		"Dash":                               true,
+		"Deprecated":                         true,
+		"Deseret":                            true,
+		"Devanagari":                         true,
+		"Diacritic":                          true,
+		"Digit":                              true,
+		"Duployan":                           true,
+		"Egyptian_Hieroglyphs":               true,
+		"Elbasan":                            true,
+		"Ethiopic":                           true,
+		"Extender":                           true,
+		"FoldCategory":                       true,
+		"FoldScript":                         true,
+		"Georgian":                           true,
+		"Glagolitic":                         true,
+		"Gothic":                             true,
+		"Grantha":                            true,
+		"GraphicRanges":                      true,
+		"Greek":                              true,
+		"Gujarati":                           true,
+		"Gurmukhi":                           true,
+		"Han":                                true,
+		"Hangul":                             true,
+		"Hanunoo":                            true,
+		"Hatran":                             true,
+		"Hebrew":                             true,
+		"Hex_Digit":                          true,
+		"Hiragana":                           true,
+		"Hyphen":                             true,
+		"IDS_Binary_Operator":                true,
+		"IDS_Trinary_Operator":               true,
+		"Ideographic":                        true,
+		"Imperial_Aramaic":                   true,
+		"In":                                 true,
+		"Inherited":                          true,
+		"Inscriptional_Pahlavi":              true,
+		"Inscriptional_Parthian":             true,
+		"Is":                                 true,
+		"IsControl":                          true,
+		"IsDigit":                            true,
+		"IsGraphic":                          true,
+		"IsLetter":                           true,
+		"IsLower":                            true,
+		"IsMark":                             true,
+		"IsNumber":                           true,
+		"IsOneOf":                            true,
+		"IsPrint":                            true,
+		"IsPunct":                            true,
+		"IsSpace":                            true,
+		"IsSymbol":                           true,
+		"IsTitle":                            true,
+		"IsUpper":                            true,
+		"Javanese":                           true,
+		"Join_Control":                       true,
+		"Kaithi":                             true,
+		"Kannada":                            true,
+		"Katakana":                           true,
+		"Kayah_Li":                           true,
+		"Kharoshthi":                         true,
+		"Khmer":                              true,
+		"Khojki":                             true,
+		"Khudawadi":                          true,
+		"L":                                  true,
+		"Lao":                                true,
+		"Latin":                              true,
+		"Lepcha":                             true,
+		"Letter":                             true,
+		"Limbu":                              true,
+		"Linear_A":                           true,
+		"Linear_B":                           true,
+		"Lisu":                               true,
+		"Ll":                                 true,
+		"Lm":                                 true,
+		"Lo":                                 true,
+		"Logical_Order_Exception":            true,
+		"Lower":                              true,
+		"LowerCase":                          true,
+		"Lt":                                 true,
+		"Lu":                                 true,
+		"Lycian":                             true,
+		"Lydian":                             true,
+		"M":                                  true,
+		"Mahajani":                           true,
+		"Malayalam":                          true,
+		"Mandaic":                            true,
+		"Manichaean":                         true,
+		"Marchen":                            true,
+		"Mark":                               true,
+		"Masaram_Gondi":                      true,
+		"MaxASCII":                           true,
+		"MaxCase":                            true,
+		"MaxLatin1":                          true,
+		"MaxRune":                            true,
+		"Mc":                                 true,
+		"Me":                                 true,
+		"Meetei_Mayek":                       true,
+		"Mende_Kikakui":                      true,
+		"Meroitic_Cursive":                   true,
+		"Meroitic_Hieroglyphs":               true,
+		"Miao":                               true,
+		"Mn":                                 true,
+		"Modi":                               true,
+		"Mongolian":                          true,
+		"Mro":                                true,
+		"Multani":                            true,
+		"Myanmar":                            true,
+		"N":                                  true,
+		"Nabataean":                          true,
+		"Nd":                                 true,
+		"New_Tai_Lue":                        true,
+		"Newa":                               true,
+		"Nko":                                true,
+		"Nl":                                 true,
+		"No":                                 true,
+		"Noncharacter_Code_Point":            true,
+		"Number":                             true,
+		"Nushu":                              true,
+		"Ogham":                              true,
+		"Ol_Chiki":                           true,
+		"Old_Hungarian":                      true,
+		"Old_Italic":                         true,
+		"Old_North_Arabian":                  true,
+		"Old_Permic":                         true,
+		"Old_Persian":                        true,
+		"Old_South_Arabian":                  true,
+		"Old_Turkic":                         true,
+		"Oriya":                              true,
+		"Osage":                              true,
+		"Osmanya":                            true,
+		"Other":                              true,
+		"Other_Alphabetic":                   true,
+		"Other_Default_Ignorable_Code_Point": true,
+		"Other_Grapheme_Extend":              true,
+		"Other_ID_Continue":                  true,
+		"Other_ID_Start":                     true,
+		"Other_Lowercase":                    true,
+		"Other_Math":                         true,
+		"Other_Uppercase":                    true,
+		"P":                                  true,
+		"Pahawh_Hmong":                       true,
+		"Palmyrene":                          true,
+		"Pattern_Syntax":                     true,
+		"Pattern_White_Space":                true,
+		"Pau_Cin_Hau":                        true,
+		"Pc":                                 true,
+		"Pd":                                 true,
+		"Pe":                                 true,
+		"Pf":                                 true,
+		"Phags_Pa":                           true,
+		"Phoenician":                         true,
+		"Pi":                                 true,
+		"Po":                                 true,
+		"Prepended_Concatenation_Mark":       true,
+		"PrintRanges":                        true,
+		"Properties":                         true,
+		"Ps":                                 true,
+		"Psalter_Pahlavi":                    true,
+		"Punct":                              true,
+		"Quotation_Mark":                     true,
+		"Radical":                            true,
+		"Range16":                            true,
+		"Range32":                            true,
+		"RangeTable":                         true,
+		"Regional_Indicator":                 true,
+		"Rejang":                             true,
+		"ReplacementChar":                    true,
+		"Runic":                              true,
+		"S":                                  true,
+		"STerm":                              true,
+		"Samaritan":                          true,
+		"Saurashtra":                         true,
+		"Sc":                                 true,
+		"Scripts":                            true,
+		"Sentence_Terminal":                  true,
+		"Sharada":                            true,
+		"Shavian":                            true,
+		"Siddham":                            true,
+		"SignWriting":                        true,
+		"SimpleFold":                         true,
+		"Sinhala":                            true,
+		"Sk":                                 true,
+		"Sm":                                 true,
+		"So":                                 true,
+		"Soft_Dotted":                        true,
+		"Sora_Sompeng":                       true,
+		"Soyombo":                            true,
+		"Space":                              true,
+		"SpecialCase":                        true,
+		"Sundanese":                          true,
+		"Syloti_Nagri":                       true,
+		"Symbol":                             true,
+		"Syriac":                             true,
+		"Tagalog":                            true,
+		"Tagbanwa":                           true,
+		"Tai_Le":                             true,
+		"Tai_Tham":                           true,
+		"Tai_Viet":                           true,
+		"Takri":                              true,
+		"Tamil":                              true,
+		"Tangut":                             true,
+		"Telugu":                             true,
+		"Terminal_Punctuation":               true,
+		"Thaana":                             true,
+		"Thai":                               true,
+		"Tibetan":                            true,
+		"Tifinagh":                           true,
+		"Tirhuta":                            true,
+		"Title":                              true,
+		"TitleCase":                          true,
+		"To":                                 true,
+		"ToLower":                            true,
+		"ToTitle":                            true,
+		"ToUpper":                            true,
+		"TurkishCase":                        true,
+		"Ugaritic":                           true,
+		"Unified_Ideograph":                  true,
+		"Upper":                              true,
+		"UpperCase":                          true,
+		"UpperLower":                         true,
+		"Vai":                                true,
+		"Variation_Selector":                 true,
+		"Version":                            true,
+		"Warang_Citi":                        true,
+		"White_Space":                        true,
+		"Yi":                                 true,
+		"Z":                                  true,
+		"Zanabazar_Square":                   true,
+		"Zl":                                 true,
+		"Zp":                                 true,
+		"Zs":                                 true,
+	},
+	"unicode/utf16": map[string]bool{
+		"Decode":      true,
+		"DecodeRune":  true,
+		"Encode":      true,
+		"EncodeRune":  true,
+		"IsSurrogate": true,
+	},
+	"unicode/utf8": map[string]bool{
+		"DecodeLastRune":         true,
+		"DecodeLastRuneInString": true,
+		"DecodeRune":             true,
+		"DecodeRuneInString":     true,
+		"EncodeRune":             true,
+		"FullRune":               true,
+		"FullRuneInString":       true,
+		"MaxRune":                true,
+		"RuneCount":              true,
+		"RuneCountInString":      true,
+		"RuneError":              true,
+		"RuneLen":                true,
+		"RuneSelf":               true,
+		"RuneStart":              true,
+		"UTFMax":                 true,
+		"Valid":                  true,
+		"ValidRune":              true,
+		"ValidString":            true,
+	},
+	"unsafe": map[string]bool{
+		"Alignof":       true,
+		"ArbitraryType": true,
+		"Offsetof":      true,
+		"Pointer":       true,
+		"Sizeof":        true,
+	},
+}
diff --git a/vendor/golang.org/x/tools/internal/module/module.go b/vendor/golang.org/x/tools/internal/module/module.go
new file mode 100644
index 0000000000..9a4edb9dec
--- /dev/null
+++ b/vendor/golang.org/x/tools/internal/module/module.go
@@ -0,0 +1,540 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package module defines the module.Version type
+// along with support code.
+package module
+
+// IMPORTANT NOTE
+//
+// This file essentially defines the set of valid import paths for the go command.
+// There are many subtle considerations, including Unicode ambiguity,
+// security, network, and file system representations.
+//
+// This file also defines the set of valid module path and version combinations,
+// another topic with many subtle considerations.
+//
+// Changes to the semantics in this file require approval from rsc.
+
+import (
+	"fmt"
+	"sort"
+	"strings"
+	"unicode"
+	"unicode/utf8"
+
+	"golang.org/x/tools/internal/semver"
+)
+
+// A Version is defined by a module path and version pair.
+type Version struct {
+	Path string
+
+	// Version is usually a semantic version in canonical form.
+	// There are two exceptions to this general rule.
+	// First, the top-level target of a build has no specific version
+	// and uses Version = "".
+	// Second, during MVS calculations the version "none" is used
+	// to represent the decision to take no version of a given module.
+	Version string `json:",omitempty"`
+}
+
+// Check checks that a given module path, version pair is valid.
+// In addition to the path being a valid module path
+// and the version being a valid semantic version,
+// the two must correspond.
+// For example, the path "yaml/v2" only corresponds to
+// semantic versions beginning with "v2.".
+func Check(path, version string) error {
+	if err := CheckPath(path); err != nil {
+		return err
+	}
+	if !semver.IsValid(version) {
+		return fmt.Errorf("malformed semantic version %v", version)
+	}
+	_, pathMajor, _ := SplitPathVersion(path)
+	if !MatchPathMajor(version, pathMajor) {
+		if pathMajor == "" {
+			pathMajor = "v0 or v1"
+		}
+		if pathMajor[0] == '.' { // .v1
+			pathMajor = pathMajor[1:]
+		}
+		return fmt.Errorf("mismatched module path %v and version %v (want %v)", path, version, pathMajor)
+	}
+	return nil
+}
+
+// firstPathOK reports whether r can appear in the first element of a module path.
+// The first element of the path must be an LDH domain name, at least for now.
+// To avoid case ambiguity, the domain name must be entirely lower case.
+func firstPathOK(r rune) bool {
+	return r == '-' || r == '.' ||
+		'0' <= r && r <= '9' ||
+		'a' <= r && r <= 'z'
+}
+
+// pathOK reports whether r can appear in an import path element.
+// Paths can be ASCII letters, ASCII digits, and limited ASCII punctuation: + - . _ and ~.
+// This matches what "go get" has historically recognized in import paths.
+// TODO(rsc): We would like to allow Unicode letters, but that requires additional
+// care in the safe encoding (see note below).
+func pathOK(r rune) bool {
+	if r < utf8.RuneSelf {
+		return r == '+' || r == '-' || r == '.' || r == '_' || r == '~' ||
+			'0' <= r && r <= '9' ||
+			'A' <= r && r <= 'Z' ||
+			'a' <= r && r <= 'z'
+	}
+	return false
+}
+
+// fileNameOK reports whether r can appear in a file name.
+// For now we allow all Unicode letters but otherwise limit to pathOK plus a few more punctuation characters.
+// If we expand the set of allowed characters here, we have to
+// work harder at detecting potential case-folding and normalization collisions.
+// See note about "safe encoding" below.
+func fileNameOK(r rune) bool {
+	if r < utf8.RuneSelf {
+		// Entire set of ASCII punctuation, from which we remove characters:
+		//     ! " # $ % & ' ( ) * + , - . / : ; < = > ? @ [ \ ] ^ _ ` { | } ~
+		// We disallow some shell special characters: " ' * < > ? ` |
+		// (Note that some of those are disallowed by the Windows file system as well.)
+		// We also disallow path separators / : and \ (fileNameOK is only called on path element characters).
+		// We allow spaces (U+0020) in file names.
+		const allowed = "!#$%&()+,-.=@[]^_{}~ "
+		if '0' <= r && r <= '9' || 'A' <= r && r <= 'Z' || 'a' <= r && r <= 'z' {
+			return true
+		}
+		for i := 0; i < len(allowed); i++ {
+			if rune(allowed[i]) == r {
+				return true
+			}
+		}
+		return false
+	}
+	// It may be OK to add more ASCII punctuation here, but only carefully.
+	// For example Windows disallows < > \, and macOS disallows :, so we must not allow those.
+	return unicode.IsLetter(r)
+}
+
+// CheckPath checks that a module path is valid.
+func CheckPath(path string) error {
+	if err := checkPath(path, false); err != nil {
+		return fmt.Errorf("malformed module path %q: %v", path, err)
+	}
+	i := strings.Index(path, "/")
+	if i < 0 {
+		i = len(path)
+	}
+	if i == 0 {
+		return fmt.Errorf("malformed module path %q: leading slash", path)
+	}
+	if !strings.Contains(path[:i], ".") {
+		return fmt.Errorf("malformed module path %q: missing dot in first path element", path)
+	}
+	if path[0] == '-' {
+		return fmt.Errorf("malformed module path %q: leading dash in first path element", path)
+	}
+	for _, r := range path[:i] {
+		if !firstPathOK(r) {
+			return fmt.Errorf("malformed module path %q: invalid char %q in first path element", path, r)
+		}
+	}
+	if _, _, ok := SplitPathVersion(path); !ok {
+		return fmt.Errorf("malformed module path %q: invalid version", path)
+	}
+	return nil
+}
+
+// CheckImportPath checks that an import path is valid.
+func CheckImportPath(path string) error {
+	if err := checkPath(path, false); err != nil {
+		return fmt.Errorf("malformed import path %q: %v", path, err)
+	}
+	return nil
+}
+
+// checkPath checks that a general path is valid.
+// It returns an error describing why but not mentioning path.
+// Because these checks apply to both module paths and import paths,
+// the caller is expected to add the "malformed ___ path %q: " prefix.
+// fileName indicates whether the final element of the path is a file name
+// (as opposed to a directory name).
+func checkPath(path string, fileName bool) error {
+	if !utf8.ValidString(path) {
+		return fmt.Errorf("invalid UTF-8")
+	}
+	if path == "" {
+		return fmt.Errorf("empty string")
+	}
+	if strings.Contains(path, "..") {
+		return fmt.Errorf("double dot")
+	}
+	if strings.Contains(path, "//") {
+		return fmt.Errorf("double slash")
+	}
+	if path[len(path)-1] == '/' {
+		return fmt.Errorf("trailing slash")
+	}
+	elemStart := 0
+	for i, r := range path {
+		if r == '/' {
+			if err := checkElem(path[elemStart:i], fileName); err != nil {
+				return err
+			}
+			elemStart = i + 1
+		}
+	}
+	if err := checkElem(path[elemStart:], fileName); err != nil {
+		return err
+	}
+	return nil
+}
+
+// checkElem checks whether an individual path element is valid.
+// fileName indicates whether the element is a file name (not a directory name).
+func checkElem(elem string, fileName bool) error {
+	if elem == "" {
+		return fmt.Errorf("empty path element")
+	}
+	if strings.Count(elem, ".") == len(elem) {
+		return fmt.Errorf("invalid path element %q", elem)
+	}
+	if elem[0] == '.' && !fileName {
+		return fmt.Errorf("leading dot in path element")
+	}
+	if elem[len(elem)-1] == '.' {
+		return fmt.Errorf("trailing dot in path element")
+	}
+	charOK := pathOK
+	if fileName {
+		charOK = fileNameOK
+	}
+	for _, r := range elem {
+		if !charOK(r) {
+			return fmt.Errorf("invalid char %q", r)
+		}
+	}
+
+	// Windows disallows a bunch of path elements, sadly.
+	// See https://docs.microsoft.com/en-us/windows/desktop/fileio/naming-a-file
+	short := elem
+	if i := strings.Index(short, "."); i >= 0 {
+		short = short[:i]
+	}
+	for _, bad := range badWindowsNames {
+		if strings.EqualFold(bad, short) {
+			return fmt.Errorf("disallowed path element %q", elem)
+		}
+	}
+	return nil
+}
+
+// CheckFilePath checks whether a slash-separated file path is valid.
+func CheckFilePath(path string) error {
+	if err := checkPath(path, true); err != nil {
+		return fmt.Errorf("malformed file path %q: %v", path, err)
+	}
+	return nil
+}
+
+// badWindowsNames are the reserved file path elements on Windows.
+// See https://docs.microsoft.com/en-us/windows/desktop/fileio/naming-a-file
+var badWindowsNames = []string{
+	"CON",
+	"PRN",
+	"AUX",
+	"NUL",
+	"COM1",
+	"COM2",
+	"COM3",
+	"COM4",
+	"COM5",
+	"COM6",
+	"COM7",
+	"COM8",
+	"COM9",
+	"LPT1",
+	"LPT2",
+	"LPT3",
+	"LPT4",
+	"LPT5",
+	"LPT6",
+	"LPT7",
+	"LPT8",
+	"LPT9",
+}
+
+// SplitPathVersion returns prefix and major version such that prefix+pathMajor == path
+// and version is either empty or "/vN" for N >= 2.
+// As a special case, gopkg.in paths are recognized directly;
+// they require ".vN" instead of "/vN", and for all N, not just N >= 2.
+func SplitPathVersion(path string) (prefix, pathMajor string, ok bool) {
+	if strings.HasPrefix(path, "gopkg.in/") {
+		return splitGopkgIn(path)
+	}
+
+	i := len(path)
+	dot := false
+	for i > 0 && ('0' <= path[i-1] && path[i-1] <= '9' || path[i-1] == '.') {
+		if path[i-1] == '.' {
+			dot = true
+		}
+		i--
+	}
+	if i <= 1 || i == len(path) || path[i-1] != 'v' || path[i-2] != '/' {
+		return path, "", true
+	}
+	prefix, pathMajor = path[:i-2], path[i-2:]
+	if dot || len(pathMajor) <= 2 || pathMajor[2] == '0' || pathMajor == "/v1" {
+		return path, "", false
+	}
+	return prefix, pathMajor, true
+}
+
+// splitGopkgIn is like SplitPathVersion but only for gopkg.in paths.
+func splitGopkgIn(path string) (prefix, pathMajor string, ok bool) {
+	if !strings.HasPrefix(path, "gopkg.in/") {
+		return path, "", false
+	}
+	i := len(path)
+	if strings.HasSuffix(path, "-unstable") {
+		i -= len("-unstable")
+	}
+	for i > 0 && ('0' <= path[i-1] && path[i-1] <= '9') {
+		i--
+	}
+	if i <= 1 || path[i-1] != 'v' || path[i-2] != '.' {
+		// All gopkg.in paths must end in vN for some N.
+		return path, "", false
+	}
+	prefix, pathMajor = path[:i-2], path[i-2:]
+	if len(pathMajor) <= 2 || pathMajor[2] == '0' && pathMajor != ".v0" {
+		return path, "", false
+	}
+	return prefix, pathMajor, true
+}
+
+// MatchPathMajor reports whether the semantic version v
+// matches the path major version pathMajor.
+func MatchPathMajor(v, pathMajor string) bool {
+	if strings.HasPrefix(pathMajor, ".v") && strings.HasSuffix(pathMajor, "-unstable") {
+		pathMajor = strings.TrimSuffix(pathMajor, "-unstable")
+	}
+	if strings.HasPrefix(v, "v0.0.0-") && pathMajor == ".v1" {
+		// Allow old bug in pseudo-versions that generated v0.0.0- pseudoversion for gopkg .v1.
+		// For example, gopkg.in/yaml.v2@v2.2.1's go.mod requires gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405.
+		return true
+	}
+	m := semver.Major(v)
+	if pathMajor == "" {
+		return m == "v0" || m == "v1" || semver.Build(v) == "+incompatible"
+	}
+	return (pathMajor[0] == '/' || pathMajor[0] == '.') && m == pathMajor[1:]
+}
+
+// CanonicalVersion returns the canonical form of the version string v.
+// It is the same as semver.Canonical(v) except that it preserves the special build suffix "+incompatible".
+func CanonicalVersion(v string) string {
+	cv := semver.Canonical(v)
+	if semver.Build(v) == "+incompatible" {
+		cv += "+incompatible"
+	}
+	return cv
+}
+
+// Sort sorts the list by Path, breaking ties by comparing Versions.
+func Sort(list []Version) {
+	sort.Slice(list, func(i, j int) bool {
+		mi := list[i]
+		mj := list[j]
+		if mi.Path != mj.Path {
+			return mi.Path < mj.Path
+		}
+		// To help go.sum formatting, allow version/file.
+		// Compare semver prefix by semver rules,
+		// file by string order.
+		vi := mi.Version
+		vj := mj.Version
+		var fi, fj string
+		if k := strings.Index(vi, "/"); k >= 0 {
+			vi, fi = vi[:k], vi[k:]
+		}
+		if k := strings.Index(vj, "/"); k >= 0 {
+			vj, fj = vj[:k], vj[k:]
+		}
+		if vi != vj {
+			return semver.Compare(vi, vj) < 0
+		}
+		return fi < fj
+	})
+}
+
+// Safe encodings
+//
+// Module paths appear as substrings of file system paths
+// (in the download cache) and of web server URLs in the proxy protocol.
+// In general we cannot rely on file systems to be case-sensitive,
+// nor can we rely on web servers, since they read from file systems.
+// That is, we cannot rely on the file system to keep rsc.io/QUOTE
+// and rsc.io/quote separate. Windows and macOS don't.
+// Instead, we must never require two different casings of a file path.
+// Because we want the download cache to match the proxy protocol,
+// and because we want the proxy protocol to be possible to serve
+// from a tree of static files (which might be stored on a case-insensitive
+// file system), the proxy protocol must never require two different casings
+// of a URL path either.
+//
+// One possibility would be to make the safe encoding be the lowercase
+// hexadecimal encoding of the actual path bytes. This would avoid ever
+// needing different casings of a file path, but it would be fairly illegible
+// to most programmers when those paths appeared in the file system
+// (including in file paths in compiler errors and stack traces)
+// in web server logs, and so on. Instead, we want a safe encoding that
+// leaves most paths unaltered.
+//
+// The safe encoding is this:
+// replace every uppercase letter with an exclamation mark
+// followed by the letter's lowercase equivalent.
+//
+// For example,
+// github.com/Azure/azure-sdk-for-go ->  github.com/!azure/azure-sdk-for-go.
+// github.com/GoogleCloudPlatform/cloudsql-proxy -> github.com/!google!cloud!platform/cloudsql-proxy
+// github.com/Sirupsen/logrus -> github.com/!sirupsen/logrus.
+//
+// Import paths that avoid upper-case letters are left unchanged.
+// Note that because import paths are ASCII-only and avoid various
+// problematic punctuation (like : < and >), the safe encoding is also ASCII-only
+// and avoids the same problematic punctuation.
+//
+// Import paths have never allowed exclamation marks, so there is no
+// need to define how to encode a literal !.
+//
+// Although paths are disallowed from using Unicode (see pathOK above),
+// the eventual plan is to allow Unicode letters as well, to assume that
+// file systems and URLs are Unicode-safe (storing UTF-8), and apply
+// the !-for-uppercase convention. Note however that not all runes that
+// are different but case-fold equivalent are an upper/lower pair.
+// For example, U+004B ('K'), U+006B ('k'), and U+212A ('K' for Kelvin)
+// are considered to case-fold to each other. When we do add Unicode
+// letters, we must not assume that upper/lower are the only case-equivalent pairs.
+// Perhaps the Kelvin symbol would be disallowed entirely, for example.
+// Or perhaps it would encode as "!!k", or perhaps as "(212A)".
+//
+// Also, it would be nice to allow Unicode marks as well as letters,
+// but marks include combining marks, and then we must deal not
+// only with case folding but also normalization: both U+00E9 ('é')
+// and U+0065 U+0301 ('e' followed by combining acute accent)
+// look the same on the page and are treated by some file systems
+// as the same path. If we do allow Unicode marks in paths, there
+// must be some kind of normalization to allow only one canonical
+// encoding of any character used in an import path.
+
+// EncodePath returns the safe encoding of the given module path.
+// It fails if the module path is invalid.
+func EncodePath(path string) (encoding string, err error) {
+	if err := CheckPath(path); err != nil {
+		return "", err
+	}
+
+	return encodeString(path)
+}
+
+// EncodeVersion returns the safe encoding of the given module version.
+// Versions are allowed to be in non-semver form but must be valid file names
+// and not contain exclamation marks.
+func EncodeVersion(v string) (encoding string, err error) {
+	if err := checkElem(v, true); err != nil || strings.Contains(v, "!") {
+		return "", fmt.Errorf("disallowed version string %q", v)
+	}
+	return encodeString(v)
+}
+
+func encodeString(s string) (encoding string, err error) {
+	haveUpper := false
+	for _, r := range s {
+		if r == '!' || r >= utf8.RuneSelf {
+			// This should be disallowed by CheckPath, but diagnose anyway.
+			// The correctness of the encoding loop below depends on it.
+			return "", fmt.Errorf("internal error: inconsistency in EncodePath")
+		}
+		if 'A' <= r && r <= 'Z' {
+			haveUpper = true
+		}
+	}
+
+	if !haveUpper {
+		return s, nil
+	}
+
+	var buf []byte
+	for _, r := range s {
+		if 'A' <= r && r <= 'Z' {
+			buf = append(buf, '!', byte(r+'a'-'A'))
+		} else {
+			buf = append(buf, byte(r))
+		}
+	}
+	return string(buf), nil
+}
+
+// DecodePath returns the module path of the given safe encoding.
+// It fails if the encoding is invalid or encodes an invalid path.
+func DecodePath(encoding string) (path string, err error) {
+	path, ok := decodeString(encoding)
+	if !ok {
+		return "", fmt.Errorf("invalid module path encoding %q", encoding)
+	}
+	if err := CheckPath(path); err != nil {
+		return "", fmt.Errorf("invalid module path encoding %q: %v", encoding, err)
+	}
+	return path, nil
+}
+
+// DecodeVersion returns the version string for the given safe encoding.
+// It fails if the encoding is invalid or encodes an invalid version.
+// Versions are allowed to be in non-semver form but must be valid file names
+// and not contain exclamation marks.
+func DecodeVersion(encoding string) (v string, err error) {
+	v, ok := decodeString(encoding)
+	if !ok {
+		return "", fmt.Errorf("invalid version encoding %q", encoding)
+	}
+	if err := checkElem(v, true); err != nil {
+		return "", fmt.Errorf("disallowed version string %q", v)
+	}
+	return v, nil
+}
+
+func decodeString(encoding string) (string, bool) {
+	var buf []byte
+
+	bang := false
+	for _, r := range encoding {
+		if r >= utf8.RuneSelf {
+			return "", false
+		}
+		if bang {
+			bang = false
+			if r < 'a' || 'z' < r {
+				return "", false
+			}
+			buf = append(buf, byte(r+'A'-'a'))
+			continue
+		}
+		if r == '!' {
+			bang = true
+			continue
+		}
+		if 'A' <= r && r <= 'Z' {
+			return "", false
+		}
+		buf = append(buf, byte(r))
+	}
+	if bang {
+		return "", false
+	}
+	return string(buf), true
+}
diff --git a/vendor/golang.org/x/tools/internal/semver/semver.go b/vendor/golang.org/x/tools/internal/semver/semver.go
new file mode 100644
index 0000000000..4af7118e55
--- /dev/null
+++ b/vendor/golang.org/x/tools/internal/semver/semver.go
@@ -0,0 +1,388 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package semver implements comparison of semantic version strings.
+// In this package, semantic version strings must begin with a leading "v",
+// as in "v1.0.0".
+//
+// The general form of a semantic version string accepted by this package is
+//
+//	vMAJOR[.MINOR[.PATCH[-PRERELEASE][+BUILD]]]
+//
+// where square brackets indicate optional parts of the syntax;
+// MAJOR, MINOR, and PATCH are decimal integers without extra leading zeros;
+// PRERELEASE and BUILD are each a series of non-empty dot-separated identifiers
+// using only alphanumeric characters and hyphens; and
+// all-numeric PRERELEASE identifiers must not have leading zeros.
+//
+// This package follows Semantic Versioning 2.0.0 (see semver.org)
+// with two exceptions. First, it requires the "v" prefix. Second, it recognizes
+// vMAJOR and vMAJOR.MINOR (with no prerelease or build suffixes)
+// as shorthands for vMAJOR.0.0 and vMAJOR.MINOR.0.
+package semver
+
+// parsed returns the parsed form of a semantic version string.
+type parsed struct {
+	major      string
+	minor      string
+	patch      string
+	short      string
+	prerelease string
+	build      string
+	err        string
+}
+
+// IsValid reports whether v is a valid semantic version string.
+func IsValid(v string) bool {
+	_, ok := parse(v)
+	return ok
+}
+
+// Canonical returns the canonical formatting of the semantic version v.
+// It fills in any missing .MINOR or .PATCH and discards build metadata.
+// Two semantic versions compare equal only if their canonical formattings
+// are identical strings.
+// The canonical invalid semantic version is the empty string.
+func Canonical(v string) string {
+	p, ok := parse(v)
+	if !ok {
+		return ""
+	}
+	if p.build != "" {
+		return v[:len(v)-len(p.build)]
+	}
+	if p.short != "" {
+		return v + p.short
+	}
+	return v
+}
+
+// Major returns the major version prefix of the semantic version v.
+// For example, Major("v2.1.0") == "v2".
+// If v is an invalid semantic version string, Major returns the empty string.
+func Major(v string) string {
+	pv, ok := parse(v)
+	if !ok {
+		return ""
+	}
+	return v[:1+len(pv.major)]
+}
+
+// MajorMinor returns the major.minor version prefix of the semantic version v.
+// For example, MajorMinor("v2.1.0") == "v2.1".
+// If v is an invalid semantic version string, MajorMinor returns the empty string.
+func MajorMinor(v string) string {
+	pv, ok := parse(v)
+	if !ok {
+		return ""
+	}
+	i := 1 + len(pv.major)
+	if j := i + 1 + len(pv.minor); j <= len(v) && v[i] == '.' && v[i+1:j] == pv.minor {
+		return v[:j]
+	}
+	return v[:i] + "." + pv.minor
+}
+
+// Prerelease returns the prerelease suffix of the semantic version v.
+// For example, Prerelease("v2.1.0-pre+meta") == "-pre".
+// If v is an invalid semantic version string, Prerelease returns the empty string.
+func Prerelease(v string) string {
+	pv, ok := parse(v)
+	if !ok {
+		return ""
+	}
+	return pv.prerelease
+}
+
+// Build returns the build suffix of the semantic version v.
+// For example, Build("v2.1.0+meta") == "+meta".
+// If v is an invalid semantic version string, Build returns the empty string.
+func Build(v string) string {
+	pv, ok := parse(v)
+	if !ok {
+		return ""
+	}
+	return pv.build
+}
+
+// Compare returns an integer comparing two versions according to
+// according to semantic version precedence.
+// The result will be 0 if v == w, -1 if v < w, or +1 if v > w.
+//
+// An invalid semantic version string is considered less than a valid one.
+// All invalid semantic version strings compare equal to each other.
+func Compare(v, w string) int {
+	pv, ok1 := parse(v)
+	pw, ok2 := parse(w)
+	if !ok1 && !ok2 {
+		return 0
+	}
+	if !ok1 {
+		return -1
+	}
+	if !ok2 {
+		return +1
+	}
+	if c := compareInt(pv.major, pw.major); c != 0 {
+		return c
+	}
+	if c := compareInt(pv.minor, pw.minor); c != 0 {
+		return c
+	}
+	if c := compareInt(pv.patch, pw.patch); c != 0 {
+		return c
+	}
+	return comparePrerelease(pv.prerelease, pw.prerelease)
+}
+
+// Max canonicalizes its arguments and then returns the version string
+// that compares greater.
+func Max(v, w string) string {
+	v = Canonical(v)
+	w = Canonical(w)
+	if Compare(v, w) > 0 {
+		return v
+	}
+	return w
+}
+
+func parse(v string) (p parsed, ok bool) {
+	if v == "" || v[0] != 'v' {
+		p.err = "missing v prefix"
+		return
+	}
+	p.major, v, ok = parseInt(v[1:])
+	if !ok {
+		p.err = "bad major version"
+		return
+	}
+	if v == "" {
+		p.minor = "0"
+		p.patch = "0"
+		p.short = ".0.0"
+		return
+	}
+	if v[0] != '.' {
+		p.err = "bad minor prefix"
+		ok = false
+		return
+	}
+	p.minor, v, ok = parseInt(v[1:])
+	if !ok {
+		p.err = "bad minor version"
+		return
+	}
+	if v == "" {
+		p.patch = "0"
+		p.short = ".0"
+		return
+	}
+	if v[0] != '.' {
+		p.err = "bad patch prefix"
+		ok = false
+		return
+	}
+	p.patch, v, ok = parseInt(v[1:])
+	if !ok {
+		p.err = "bad patch version"
+		return
+	}
+	if len(v) > 0 && v[0] == '-' {
+		p.prerelease, v, ok = parsePrerelease(v)
+		if !ok {
+			p.err = "bad prerelease"
+			return
+		}
+	}
+	if len(v) > 0 && v[0] == '+' {
+		p.build, v, ok = parseBuild(v)
+		if !ok {
+			p.err = "bad build"
+			return
+		}
+	}
+	if v != "" {
+		p.err = "junk on end"
+		ok = false
+		return
+	}
+	ok = true
+	return
+}
+
+func parseInt(v string) (t, rest string, ok bool) {
+	if v == "" {
+		return
+	}
+	if v[0] < '0' || '9' < v[0] {
+		return
+	}
+	i := 1
+	for i < len(v) && '0' <= v[i] && v[i] <= '9' {
+		i++
+	}
+	if v[0] == '0' && i != 1 {
+		return
+	}
+	return v[:i], v[i:], true
+}
+
+func parsePrerelease(v string) (t, rest string, ok bool) {
+	// "A pre-release version MAY be denoted by appending a hyphen and
+	// a series of dot separated identifiers immediately following the patch version.
+	// Identifiers MUST comprise only ASCII alphanumerics and hyphen [0-9A-Za-z-].
+	// Identifiers MUST NOT be empty. Numeric identifiers MUST NOT include leading zeroes."
+	if v == "" || v[0] != '-' {
+		return
+	}
+	i := 1
+	start := 1
+	for i < len(v) && v[i] != '+' {
+		if !isIdentChar(v[i]) && v[i] != '.' {
+			return
+		}
+		if v[i] == '.' {
+			if start == i || isBadNum(v[start:i]) {
+				return
+			}
+			start = i + 1
+		}
+		i++
+	}
+	if start == i || isBadNum(v[start:i]) {
+		return
+	}
+	return v[:i], v[i:], true
+}
+
+func parseBuild(v string) (t, rest string, ok bool) {
+	if v == "" || v[0] != '+' {
+		return
+	}
+	i := 1
+	start := 1
+	for i < len(v) {
+		if !isIdentChar(v[i]) {
+			return
+		}
+		if v[i] == '.' {
+			if start == i {
+				return
+			}
+			start = i + 1
+		}
+		i++
+	}
+	if start == i {
+		return
+	}
+	return v[:i], v[i:], true
+}
+
+func isIdentChar(c byte) bool {
+	return 'A' <= c && c <= 'Z' || 'a' <= c && c <= 'z' || '0' <= c && c <= '9' || c == '-'
+}
+
+func isBadNum(v string) bool {
+	i := 0
+	for i < len(v) && '0' <= v[i] && v[i] <= '9' {
+		i++
+	}
+	return i == len(v) && i > 1 && v[0] == '0'
+}
+
+func isNum(v string) bool {
+	i := 0
+	for i < len(v) && '0' <= v[i] && v[i] <= '9' {
+		i++
+	}
+	return i == len(v)
+}
+
+func compareInt(x, y string) int {
+	if x == y {
+		return 0
+	}
+	if len(x) < len(y) {
+		return -1
+	}
+	if len(x) > len(y) {
+		return +1
+	}
+	if x < y {
+		return -1
+	} else {
+		return +1
+	}
+}
+
+func comparePrerelease(x, y string) int {
+	// "When major, minor, and patch are equal, a pre-release version has
+	// lower precedence than a normal version.
+	// Example: 1.0.0-alpha < 1.0.0.
+	// Precedence for two pre-release versions with the same major, minor,
+	// and patch version MUST be determined by comparing each dot separated
+	// identifier from left to right until a difference is found as follows:
+	// identifiers consisting of only digits are compared numerically and
+	// identifiers with letters or hyphens are compared lexically in ASCII
+	// sort order. Numeric identifiers always have lower precedence than
+	// non-numeric identifiers. A larger set of pre-release fields has a
+	// higher precedence than a smaller set, if all of the preceding
+	// identifiers are equal.
+	// Example: 1.0.0-alpha < 1.0.0-alpha.1 < 1.0.0-alpha.beta <
+	// 1.0.0-beta < 1.0.0-beta.2 < 1.0.0-beta.11 < 1.0.0-rc.1 < 1.0.0."
+	if x == y {
+		return 0
+	}
+	if x == "" {
+		return +1
+	}
+	if y == "" {
+		return -1
+	}
+	for x != "" && y != "" {
+		x = x[1:] // skip - or .
+		y = y[1:] // skip - or .
+		var dx, dy string
+		dx, x = nextIdent(x)
+		dy, y = nextIdent(y)
+		if dx != dy {
+			ix := isNum(dx)
+			iy := isNum(dy)
+			if ix != iy {
+				if ix {
+					return -1
+				} else {
+					return +1
+				}
+			}
+			if ix {
+				if len(dx) < len(dy) {
+					return -1
+				}
+				if len(dx) > len(dy) {
+					return +1
+				}
+			}
+			if dx < dy {
+				return -1
+			} else {
+				return +1
+			}
+		}
+	}
+	if x == "" {
+		return -1
+	} else {
+		return +1
+	}
+}
+
+func nextIdent(x string) (dx, rest string) {
+	i := 0
+	for i < len(x) && x[i] != '.' {
+		i++
+	}
+	return x[:i], x[i:]
+}