mirror of
https://github.com/google/go-jsonnet.git
synced 2025-08-07 23:07:14 +02:00
77 lines
2.2 KiB
Go
77 lines
2.2 KiB
Go
/*
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Copyright 2019 Google Inc. All rights reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package formatter
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import (
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"github.com/google/go-jsonnet/ast"
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"github.com/google/go-jsonnet/internal/parser"
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"github.com/google/go-jsonnet/internal/pass"
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)
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// PrettyFieldNames forces minimal syntax with field lookups and definitions
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type PrettyFieldNames struct {
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pass.Base
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}
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// Index prettifies the definitions.
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func (c *PrettyFieldNames) Index(p pass.ASTPass, index *ast.Index, ctx pass.Context) {
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if index.Index != nil {
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// Maybe we can use an id instead.
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lit, ok := index.Index.(*ast.LiteralString)
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if ok {
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if parser.IsValidIdentifier(lit.Value) {
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index.Index = nil
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id := ast.Identifier(lit.Value)
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index.Id = &id
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index.RightBracketFodder = lit.Fodder
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}
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}
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}
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c.Base.Index(p, index, ctx)
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}
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// ObjectField prettifies the definitions.
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func (c *PrettyFieldNames) ObjectField(p pass.ASTPass, field *ast.ObjectField, ctx pass.Context) {
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if field.Kind == ast.ObjectFieldExpr {
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// First try ["foo"] -> "foo".
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lit, ok := field.Expr1.(*ast.LiteralString)
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if ok {
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field.Kind = ast.ObjectFieldStr
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ast.FodderMoveFront(&lit.Fodder, &field.Fodder1)
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if field.Method != nil {
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ast.FodderMoveFront(&field.Method.ParenLeftFodder, &field.Fodder2)
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} else {
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ast.FodderMoveFront(&field.OpFodder, &field.Fodder2)
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}
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}
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}
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if field.Kind == ast.ObjectFieldStr {
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// Then try "foo" -> foo.
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lit, ok := field.Expr1.(*ast.LiteralString)
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if ok {
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if parser.IsValidIdentifier(lit.Value) {
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field.Kind = ast.ObjectFieldID
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id := ast.Identifier(lit.Value)
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field.Id = &id
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field.Fodder1 = lit.Fodder
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field.Expr1 = nil
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}
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}
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}
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c.Base.ObjectField(p, field, ctx)
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}
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