forked from Shiloh/githaven
118 lines
2.4 KiB
Go
118 lines
2.4 KiB
Go
// 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
|
|
}
|