Files
tidb/executor/utils.go
2021-02-04 17:32:15 +08:00

47 lines
1.2 KiB
Go

// Copyright 2021 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package executor
import "strings"
func setFromString(value string) []string {
if len(value) == 0 {
return nil
}
return strings.Split(value, ",")
}
// addToSet add a value to the set, e.g:
// addToSet("Select,Insert,Update", "Update") returns "Select,Insert,Update".
func addToSet(set []string, value string) []string {
for _, v := range set {
if v == value {
return set
}
}
return append(set, value)
}
// deleteFromSet delete the value from the set, e.g:
// deleteFromSet("Select,Insert,Update", "Update") returns "Select,Insert".
func deleteFromSet(set []string, value string) []string {
for i, v := range set {
if v == value {
copy(set[i:], set[i+1:])
return set[:len(set)-1]
}
}
return set
}