diff options
author | Thomas Boerger <thomas@webhippie.de> | 2016-11-29 17:26:36 +0100 |
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committer | Lunny Xiao <xiaolunwen@gmail.com> | 2016-11-30 00:26:36 +0800 |
commit | b6a95a8cb3d9e611caf1bb8c0d3ff773e00923d6 (patch) | |
tree | 2717811fd5b10ebaddccf3ab18070c7bc71afaec /vendor/github.com/petar/GoLLRB | |
parent | 4680c349ddea56e2a6a603c2d0a54bf2bb5bfe86 (diff) | |
download | gitea-b6a95a8cb3d9e611caf1bb8c0d3ff773e00923d6.tar.gz gitea-b6a95a8cb3d9e611caf1bb8c0d3ff773e00923d6.zip |
Integrate public as bindata optionally (#293)
* Dropped unused codekit config
* Integrated dynamic and static bindata for public
* Ignore public bindata
* Add a general generate make task
* Integrated flexible public assets into web command
* Updated vendoring, added all missiong govendor deps
* Made the linter happy with the bindata and dynamic code
* Moved public bindata definition to modules directory
* Ignoring the new bindata path now
* Updated to the new public modules import path
* Updated public bindata command and drop the new prefix
Diffstat (limited to 'vendor/github.com/petar/GoLLRB')
-rw-r--r-- | vendor/github.com/petar/GoLLRB/LICENSE | 27 | ||||
-rw-r--r-- | vendor/github.com/petar/GoLLRB/llrb/avgvar.go | 39 | ||||
-rw-r--r-- | vendor/github.com/petar/GoLLRB/llrb/iterator.go | 93 | ||||
-rw-r--r-- | vendor/github.com/petar/GoLLRB/llrb/llrb-stats.go | 46 | ||||
-rw-r--r-- | vendor/github.com/petar/GoLLRB/llrb/llrb.go | 456 | ||||
-rw-r--r-- | vendor/github.com/petar/GoLLRB/llrb/util.go | 17 |
6 files changed, 678 insertions, 0 deletions
diff --git a/vendor/github.com/petar/GoLLRB/LICENSE b/vendor/github.com/petar/GoLLRB/LICENSE new file mode 100644 index 0000000000..b75312c787 --- /dev/null +++ b/vendor/github.com/petar/GoLLRB/LICENSE @@ -0,0 +1,27 @@ +Copyright (c) 2010, Petar Maymounkov +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 Petar Maymounkov 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 HOLDER 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/github.com/petar/GoLLRB/llrb/avgvar.go b/vendor/github.com/petar/GoLLRB/llrb/avgvar.go new file mode 100644 index 0000000000..2d7e2a3262 --- /dev/null +++ b/vendor/github.com/petar/GoLLRB/llrb/avgvar.go @@ -0,0 +1,39 @@ +// Copyright 2010 Petar Maymounkov. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package llrb + +import "math" + +// avgVar maintains the average and variance of a stream of numbers +// in a space-efficient manner. +type avgVar struct { + count int64 + sum, sumsq float64 +} + +func (av *avgVar) Init() { + av.count = 0 + av.sum = 0.0 + av.sumsq = 0.0 +} + +func (av *avgVar) Add(sample float64) { + av.count++ + av.sum += sample + av.sumsq += sample * sample +} + +func (av *avgVar) GetCount() int64 { return av.count } + +func (av *avgVar) GetAvg() float64 { return av.sum / float64(av.count) } + +func (av *avgVar) GetTotal() float64 { return av.sum } + +func (av *avgVar) GetVar() float64 { + a := av.GetAvg() + return av.sumsq/float64(av.count) - a*a +} + +func (av *avgVar) GetStdDev() float64 { return math.Sqrt(av.GetVar()) } diff --git a/vendor/github.com/petar/GoLLRB/llrb/iterator.go b/vendor/github.com/petar/GoLLRB/llrb/iterator.go new file mode 100644 index 0000000000..ee7b27f442 --- /dev/null +++ b/vendor/github.com/petar/GoLLRB/llrb/iterator.go @@ -0,0 +1,93 @@ +package llrb + +type ItemIterator func(i Item) bool + +//func (t *Tree) Ascend(iterator ItemIterator) { +// t.AscendGreaterOrEqual(Inf(-1), iterator) +//} + +func (t *LLRB) AscendRange(greaterOrEqual, lessThan Item, iterator ItemIterator) { + t.ascendRange(t.root, greaterOrEqual, lessThan, iterator) +} + +func (t *LLRB) ascendRange(h *Node, inf, sup Item, iterator ItemIterator) bool { + if h == nil { + return true + } + if !less(h.Item, sup) { + return t.ascendRange(h.Left, inf, sup, iterator) + } + if less(h.Item, inf) { + return t.ascendRange(h.Right, inf, sup, iterator) + } + + if !t.ascendRange(h.Left, inf, sup, iterator) { + return false + } + if !iterator(h.Item) { + return false + } + return t.ascendRange(h.Right, inf, sup, iterator) +} + +// AscendGreaterOrEqual will call iterator once for each element greater or equal to +// pivot in ascending order. It will stop whenever the iterator returns false. +func (t *LLRB) AscendGreaterOrEqual(pivot Item, iterator ItemIterator) { + t.ascendGreaterOrEqual(t.root, pivot, iterator) +} + +func (t *LLRB) ascendGreaterOrEqual(h *Node, pivot Item, iterator ItemIterator) bool { + if h == nil { + return true + } + if !less(h.Item, pivot) { + if !t.ascendGreaterOrEqual(h.Left, pivot, iterator) { + return false + } + if !iterator(h.Item) { + return false + } + } + return t.ascendGreaterOrEqual(h.Right, pivot, iterator) +} + +func (t *LLRB) AscendLessThan(pivot Item, iterator ItemIterator) { + t.ascendLessThan(t.root, pivot, iterator) +} + +func (t *LLRB) ascendLessThan(h *Node, pivot Item, iterator ItemIterator) bool { + if h == nil { + return true + } + if !t.ascendLessThan(h.Left, pivot, iterator) { + return false + } + if !iterator(h.Item) { + return false + } + if less(h.Item, pivot) { + return t.ascendLessThan(h.Left, pivot, iterator) + } + return true +} + +// DescendLessOrEqual will call iterator once for each element less than the +// pivot in descending order. It will stop whenever the iterator returns false. +func (t *LLRB) DescendLessOrEqual(pivot Item, iterator ItemIterator) { + t.descendLessOrEqual(t.root, pivot, iterator) +} + +func (t *LLRB) descendLessOrEqual(h *Node, pivot Item, iterator ItemIterator) bool { + if h == nil { + return true + } + if less(h.Item, pivot) || !less(pivot, h.Item) { + if !t.descendLessOrEqual(h.Right, pivot, iterator) { + return false + } + if !iterator(h.Item) { + return false + } + } + return t.descendLessOrEqual(h.Left, pivot, iterator) +} diff --git a/vendor/github.com/petar/GoLLRB/llrb/llrb-stats.go b/vendor/github.com/petar/GoLLRB/llrb/llrb-stats.go new file mode 100644 index 0000000000..47126a3be9 --- /dev/null +++ b/vendor/github.com/petar/GoLLRB/llrb/llrb-stats.go @@ -0,0 +1,46 @@ +// Copyright 2010 Petar Maymounkov. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package llrb + +// GetHeight() returns an item in the tree with key @key, and it's height in the tree +func (t *LLRB) GetHeight(key Item) (result Item, depth int) { + return t.getHeight(t.root, key) +} + +func (t *LLRB) getHeight(h *Node, item Item) (Item, int) { + if h == nil { + return nil, 0 + } + if less(item, h.Item) { + result, depth := t.getHeight(h.Left, item) + return result, depth + 1 + } + if less(h.Item, item) { + result, depth := t.getHeight(h.Right, item) + return result, depth + 1 + } + return h.Item, 0 +} + +// HeightStats() returns the average and standard deviation of the height +// of elements in the tree +func (t *LLRB) HeightStats() (avg, stddev float64) { + av := &avgVar{} + heightStats(t.root, 0, av) + return av.GetAvg(), av.GetStdDev() +} + +func heightStats(h *Node, d int, av *avgVar) { + if h == nil { + return + } + av.Add(float64(d)) + if h.Left != nil { + heightStats(h.Left, d+1, av) + } + if h.Right != nil { + heightStats(h.Right, d+1, av) + } +} diff --git a/vendor/github.com/petar/GoLLRB/llrb/llrb.go b/vendor/github.com/petar/GoLLRB/llrb/llrb.go new file mode 100644 index 0000000000..81373fbfdf --- /dev/null +++ b/vendor/github.com/petar/GoLLRB/llrb/llrb.go @@ -0,0 +1,456 @@ +// Copyright 2010 Petar Maymounkov. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// A Left-Leaning Red-Black (LLRB) implementation of 2-3 balanced binary search trees, +// based on the following work: +// +// http://www.cs.princeton.edu/~rs/talks/LLRB/08Penn.pdf +// http://www.cs.princeton.edu/~rs/talks/LLRB/LLRB.pdf +// http://www.cs.princeton.edu/~rs/talks/LLRB/Java/RedBlackBST.java +// +// 2-3 trees (and the run-time equivalent 2-3-4 trees) are the de facto standard BST +// algoritms found in implementations of Python, Java, and other libraries. The LLRB +// implementation of 2-3 trees is a recent improvement on the traditional implementation, +// observed and documented by Robert Sedgewick. +// +package llrb + +// Tree is a Left-Leaning Red-Black (LLRB) implementation of 2-3 trees +type LLRB struct { + count int + root *Node +} + +type Node struct { + Item + Left, Right *Node // Pointers to left and right child nodes + Black bool // If set, the color of the link (incoming from the parent) is black + // In the LLRB, new nodes are always red, hence the zero-value for node +} + +type Item interface { + Less(than Item) bool +} + +// +func less(x, y Item) bool { + if x == pinf { + return false + } + if x == ninf { + return true + } + return x.Less(y) +} + +// Inf returns an Item that is "bigger than" any other item, if sign is positive. +// Otherwise it returns an Item that is "smaller than" any other item. +func Inf(sign int) Item { + if sign == 0 { + panic("sign") + } + if sign > 0 { + return pinf + } + return ninf +} + +var ( + ninf = nInf{} + pinf = pInf{} +) + +type nInf struct{} + +func (nInf) Less(Item) bool { + return true +} + +type pInf struct{} + +func (pInf) Less(Item) bool { + return false +} + +// New() allocates a new tree +func New() *LLRB { + return &LLRB{} +} + +// SetRoot sets the root node of the tree. +// It is intended to be used by functions that deserialize the tree. +func (t *LLRB) SetRoot(r *Node) { + t.root = r +} + +// Root returns the root node of the tree. +// It is intended to be used by functions that serialize the tree. +func (t *LLRB) Root() *Node { + return t.root +} + +// Len returns the number of nodes in the tree. +func (t *LLRB) Len() int { return t.count } + +// Has returns true if the tree contains an element whose order is the same as that of key. +func (t *LLRB) Has(key Item) bool { + return t.Get(key) != nil +} + +// Get retrieves an element from the tree whose order is the same as that of key. +func (t *LLRB) Get(key Item) Item { + h := t.root + for h != nil { + switch { + case less(key, h.Item): + h = h.Left + case less(h.Item, key): + h = h.Right + default: + return h.Item + } + } + return nil +} + +// Min returns the minimum element in the tree. +func (t *LLRB) Min() Item { + h := t.root + if h == nil { + return nil + } + for h.Left != nil { + h = h.Left + } + return h.Item +} + +// Max returns the maximum element in the tree. +func (t *LLRB) Max() Item { + h := t.root + if h == nil { + return nil + } + for h.Right != nil { + h = h.Right + } + return h.Item +} + +func (t *LLRB) ReplaceOrInsertBulk(items ...Item) { + for _, i := range items { + t.ReplaceOrInsert(i) + } +} + +func (t *LLRB) InsertNoReplaceBulk(items ...Item) { + for _, i := range items { + t.InsertNoReplace(i) + } +} + +// ReplaceOrInsert inserts item into the tree. If an existing +// element has the same order, it is removed from the tree and returned. +func (t *LLRB) ReplaceOrInsert(item Item) Item { + if item == nil { + panic("inserting nil item") + } + var replaced Item + t.root, replaced = t.replaceOrInsert(t.root, item) + t.root.Black = true + if replaced == nil { + t.count++ + } + return replaced +} + +func (t *LLRB) replaceOrInsert(h *Node, item Item) (*Node, Item) { + if h == nil { + return newNode(item), nil + } + + h = walkDownRot23(h) + + var replaced Item + if less(item, h.Item) { // BUG + h.Left, replaced = t.replaceOrInsert(h.Left, item) + } else if less(h.Item, item) { + h.Right, replaced = t.replaceOrInsert(h.Right, item) + } else { + replaced, h.Item = h.Item, item + } + + h = walkUpRot23(h) + + return h, replaced +} + +// InsertNoReplace inserts item into the tree. If an existing +// element has the same order, both elements remain in the tree. +func (t *LLRB) InsertNoReplace(item Item) { + if item == nil { + panic("inserting nil item") + } + t.root = t.insertNoReplace(t.root, item) + t.root.Black = true + t.count++ +} + +func (t *LLRB) insertNoReplace(h *Node, item Item) *Node { + if h == nil { + return newNode(item) + } + + h = walkDownRot23(h) + + if less(item, h.Item) { + h.Left = t.insertNoReplace(h.Left, item) + } else { + h.Right = t.insertNoReplace(h.Right, item) + } + + return walkUpRot23(h) +} + +// Rotation driver routines for 2-3 algorithm + +func walkDownRot23(h *Node) *Node { return h } + +func walkUpRot23(h *Node) *Node { + if isRed(h.Right) && !isRed(h.Left) { + h = rotateLeft(h) + } + + if isRed(h.Left) && isRed(h.Left.Left) { + h = rotateRight(h) + } + + if isRed(h.Left) && isRed(h.Right) { + flip(h) + } + + return h +} + +// Rotation driver routines for 2-3-4 algorithm + +func walkDownRot234(h *Node) *Node { + if isRed(h.Left) && isRed(h.Right) { + flip(h) + } + + return h +} + +func walkUpRot234(h *Node) *Node { + if isRed(h.Right) && !isRed(h.Left) { + h = rotateLeft(h) + } + + if isRed(h.Left) && isRed(h.Left.Left) { + h = rotateRight(h) + } + + return h +} + +// DeleteMin deletes the minimum element in the tree and returns the +// deleted item or nil otherwise. +func (t *LLRB) DeleteMin() Item { + var deleted Item + t.root, deleted = deleteMin(t.root) + if t.root != nil { + t.root.Black = true + } + if deleted != nil { + t.count-- + } + return deleted +} + +// deleteMin code for LLRB 2-3 trees +func deleteMin(h *Node) (*Node, Item) { + if h == nil { + return nil, nil + } + if h.Left == nil { + return nil, h.Item + } + + if !isRed(h.Left) && !isRed(h.Left.Left) { + h = moveRedLeft(h) + } + + var deleted Item + h.Left, deleted = deleteMin(h.Left) + + return fixUp(h), deleted +} + +// DeleteMax deletes the maximum element in the tree and returns +// the deleted item or nil otherwise +func (t *LLRB) DeleteMax() Item { + var deleted Item + t.root, deleted = deleteMax(t.root) + if t.root != nil { + t.root.Black = true + } + if deleted != nil { + t.count-- + } + return deleted +} + +func deleteMax(h *Node) (*Node, Item) { + if h == nil { + return nil, nil + } + if isRed(h.Left) { + h = rotateRight(h) + } + if h.Right == nil { + return nil, h.Item + } + if !isRed(h.Right) && !isRed(h.Right.Left) { + h = moveRedRight(h) + } + var deleted Item + h.Right, deleted = deleteMax(h.Right) + + return fixUp(h), deleted +} + +// Delete deletes an item from the tree whose key equals key. +// The deleted item is return, otherwise nil is returned. +func (t *LLRB) Delete(key Item) Item { + var deleted Item + t.root, deleted = t.delete(t.root, key) + if t.root != nil { + t.root.Black = true + } + if deleted != nil { + t.count-- + } + return deleted +} + +func (t *LLRB) delete(h *Node, item Item) (*Node, Item) { + var deleted Item + if h == nil { + return nil, nil + } + if less(item, h.Item) { + if h.Left == nil { // item not present. Nothing to delete + return h, nil + } + if !isRed(h.Left) && !isRed(h.Left.Left) { + h = moveRedLeft(h) + } + h.Left, deleted = t.delete(h.Left, item) + } else { + if isRed(h.Left) { + h = rotateRight(h) + } + // If @item equals @h.Item and no right children at @h + if !less(h.Item, item) && h.Right == nil { + return nil, h.Item + } + // PETAR: Added 'h.Right != nil' below + if h.Right != nil && !isRed(h.Right) && !isRed(h.Right.Left) { + h = moveRedRight(h) + } + // If @item equals @h.Item, and (from above) 'h.Right != nil' + if !less(h.Item, item) { + var subDeleted Item + h.Right, subDeleted = deleteMin(h.Right) + if subDeleted == nil { + panic("logic") + } + deleted, h.Item = h.Item, subDeleted + } else { // Else, @item is bigger than @h.Item + h.Right, deleted = t.delete(h.Right, item) + } + } + + return fixUp(h), deleted +} + +// Internal node manipulation routines + +func newNode(item Item) *Node { return &Node{Item: item} } + +func isRed(h *Node) bool { + if h == nil { + return false + } + return !h.Black +} + +func rotateLeft(h *Node) *Node { + x := h.Right + if x.Black { + panic("rotating a black link") + } + h.Right = x.Left + x.Left = h + x.Black = h.Black + h.Black = false + return x +} + +func rotateRight(h *Node) *Node { + x := h.Left + if x.Black { + panic("rotating a black link") + } + h.Left = x.Right + x.Right = h + x.Black = h.Black + h.Black = false + return x +} + +// REQUIRE: Left and Right children must be present +func flip(h *Node) { + h.Black = !h.Black + h.Left.Black = !h.Left.Black + h.Right.Black = !h.Right.Black +} + +// REQUIRE: Left and Right children must be present +func moveRedLeft(h *Node) *Node { + flip(h) + if isRed(h.Right.Left) { + h.Right = rotateRight(h.Right) + h = rotateLeft(h) + flip(h) + } + return h +} + +// REQUIRE: Left and Right children must be present +func moveRedRight(h *Node) *Node { + flip(h) + if isRed(h.Left.Left) { + h = rotateRight(h) + flip(h) + } + return h +} + +func fixUp(h *Node) *Node { + if isRed(h.Right) { + h = rotateLeft(h) + } + + if isRed(h.Left) && isRed(h.Left.Left) { + h = rotateRight(h) + } + + if isRed(h.Left) && isRed(h.Right) { + flip(h) + } + + return h +} diff --git a/vendor/github.com/petar/GoLLRB/llrb/util.go b/vendor/github.com/petar/GoLLRB/llrb/util.go new file mode 100644 index 0000000000..63dbdb2df0 --- /dev/null +++ b/vendor/github.com/petar/GoLLRB/llrb/util.go @@ -0,0 +1,17 @@ +// Copyright 2010 Petar Maymounkov. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package llrb + +type Int int + +func (x Int) Less(than Item) bool { + return x < than.(Int) +} + +type String string + +func (x String) Less(than Item) bool { + return x < than.(String) +} |