61 lines
1.5 KiB
Go
61 lines
1.5 KiB
Go
// Copyright 2014 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package parser
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func AddStringToList(value *Value, s string) (modified bool) {
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if value.Type != List {
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panic("expected list value, got " + value.Type.String())
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}
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for _, v := range value.ListValue {
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if v.Type != String {
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panic("expected string in list, got " + value.Type.String())
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}
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if v.StringValue == s {
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// string already exists
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return false
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}
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}
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value.ListValue = append(value.ListValue, Value{
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Type: String,
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Pos: value.EndPos,
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StringValue: s,
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})
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return true
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}
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func RemoveStringFromList(value *Value, s string) (modified bool) {
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if value.Type != List {
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panic("expected list value, got " + value.Type.String())
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}
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for i, v := range value.ListValue {
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if v.Type != String {
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panic("expected string in list, got " + value.Type.String())
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}
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if v.StringValue == s {
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value.ListValue = append(value.ListValue[:i], value.ListValue[i+1:]...)
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return true
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}
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}
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return false
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}
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