1 files changed, 117 insertions, 0 deletions
diff --git a/vendor/xorm.io/xorm/statement_exprparam.go b/vendor/xorm.io/xorm/statement_exprparam.go
new file mode 100644
index 0000000000..4da4f1ea12
--- /dev/null
+++ b/vendor/xorm.io/xorm/statement_exprparam.go
@@ -0,0 +1,117 @@
+// Copyright 2019 The Xorm 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 xorm
+
+import (
+	"fmt"
+	"strings"
+
+	"xorm.io/builder"
+)
+
+type ErrUnsupportedExprType struct {
+	tp string
+}
+
+func (err ErrUnsupportedExprType) Error() string {
+	return fmt.Sprintf("Unsupported expression type: %v", err.tp)
+}
+
+type exprParam struct {
+	colName string
+	arg     interface{}
+}
+
+type exprParams struct {
+	colNames []string
+	args     []interface{}
+}
+
+func (exprs *exprParams) Len() int {
+	return len(exprs.colNames)
+}
+
+func (exprs *exprParams) addParam(colName string, arg interface{}) {
+	exprs.colNames = append(exprs.colNames, colName)
+	exprs.args = append(exprs.args, arg)
+}
+
+func (exprs *exprParams) isColExist(colName string) bool {
+	for _, name := range exprs.colNames {
+		if strings.EqualFold(trimQuote(name), trimQuote(colName)) {
+			return true
+		}
+	}
+	return false
+}
+
+func (exprs *exprParams) getByName(colName string) (exprParam, bool) {
+	for i, name := range exprs.colNames {
+		if strings.EqualFold(name, colName) {
+			return exprParam{name, exprs.args[i]}, true
+		}
+	}
+	return exprParam{}, false
+}
+
+func (exprs *exprParams) writeArgs(w *builder.BytesWriter) error {
+	for i, expr := range exprs.args {
+		switch arg := expr.(type) {
+		case *builder.Builder:
+			if _, err := w.WriteString("("); err != nil {
+				return err
+			}
+			if err := arg.WriteTo(w); err != nil {
+				return err
+			}
+			if _, err := w.WriteString(")"); err != nil {
+				return err
+			}
+		default:
+			if _, err := w.WriteString(fmt.Sprintf("%v", arg)); err != nil {
+				return err
+			}
+		}
+		if i != len(exprs.args)-1 {
+			if _, err := w.WriteString(","); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (exprs *exprParams) writeNameArgs(w *builder.BytesWriter) error {
+	for i, colName := range exprs.colNames {
+		if _, err := w.WriteString(colName); err != nil {
+			return err
+		}
+		if _, err := w.WriteString("="); err != nil {
+			return err
+		}
+
+		switch arg := exprs.args[i].(type) {
+		case *builder.Builder:
+			if _, err := w.WriteString("("); err != nil {
+				return err
+			}
+			if err := arg.WriteTo(w); err != nil {
+				return err
+			}
+			if _, err := w.WriteString("("); err != nil {
+				return err
+			}
+		default:
+			w.Append(exprs.args[i])
+		}
+
+		if i+1 != len(exprs.colNames) {
+			if _, err := w.WriteString(","); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}