e32cc80f20
Refactor the blueprint parser Value object, which contained a Type enum and members to hold every possible type, into an interface (now called Expression). Rename the existing Expression object that represented a binary operator Operator. Also adds and fixes some new printer test cases with mulitline expressions. Change-Id: Icf4a20f92c8c2a27f18df8ca515a9d7f282ff133
52 lines
1.4 KiB
Go
52 lines
1.4 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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import "fmt"
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func AddStringToList(list *List, s string) (modified bool) {
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for _, v := range list.Values {
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if v.Type() != StringType {
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panic(fmt.Errorf("expected string in list, got %s", v.Type()))
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}
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if sv, ok := v.(*String); ok && sv.Value == 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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list.Values = append(list.Values, &String{
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LiteralPos: list.RBracePos,
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Value: s,
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})
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return true
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}
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func RemoveStringFromList(list *List, s string) (modified bool) {
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for i, v := range list.Values {
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if v.Type() != StringType {
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panic(fmt.Errorf("expected string in list, got %s", v.Type()))
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}
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if sv, ok := v.(*String); ok && sv.Value == s {
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list.Values = append(list.Values[:i], list.Values[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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