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parser.go
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/
parser.go
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// Copyright (C) 2017 Google 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,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package parser implements a parser for converting the api language into
// abstract syntax trees.
package parser
import (
"github.com/google/gapid/core/text/parse"
"github.com/google/gapid/core/text/parse/cst"
"github.com/google/gapid/gapil/ast"
)
type parser struct {
*parse.Parser
mappings *ast.Mappings
}
// Parse takes a string containing a complete api description and
// returns the abstract syntax tree representation of it.
// If the string is not syntactically valid, it will also return the
// errors encountered. If errors are returned, the ast returned will be
// the incomplete tree so far, and may not be structurally valid.
func Parse(filename, data string, m *ast.Mappings) (*ast.API, parse.ErrorList) {
var api *ast.API
errors := parse.Parse(filename, data, parse.NewSkip("//", "/*", "*/"), func(p *parse.Parser, b *cst.Branch) {
apiParser := parser{p, m}
api = apiParser.requireAPI(b)
})
return api, errors
}