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Source file test/bench/go1/parser_test.go

Documentation: test/bench/go1

  // Copyright 2012 The Go Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style
  // license that can be found in the LICENSE file.
  
  package go1
  
  // go parser benchmark based on go/parser/performance_test.go
  
  import (
  	"compress/bzip2"
  	"encoding/base64"
  	"go/parser"
  	"go/token"
  	"io"
  	"io/ioutil"
  	"strings"
  	"testing"
  )
  
  var (
  	parserbytes = makeParserBytes()
  )
  
  func makeParserBytes() []byte {
  	var r io.Reader
  	r = strings.NewReader(parserbz2_base64)
  	r = base64.NewDecoder(base64.StdEncoding, r)
  	r = bzip2.NewReader(r)
  	b, err := ioutil.ReadAll(r)
  	if err != nil {
  		panic(err)
  	}
  	return b
  }
  
  func BenchmarkGoParse(b *testing.B) {
  	b.SetBytes(int64(len(parserbytes)))
  	for i := 0; i < b.N; i++ {
  		if _, err := parser.ParseFile(token.NewFileSet(), "", parserbytes, parser.ParseComments); err != nil {
  			b.Fatalf("benchmark failed due to parse error: %s", err)
  		}
  	}
  }
  

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