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Source file src/go/parser/performance_test.go

Documentation: go/parser

  // 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 parser
  
  import (
  	"go/token"
  	"io/ioutil"
  	"testing"
  )
  
  var src = readFile("parser.go")
  
  func readFile(filename string) []byte {
  	data, err := ioutil.ReadFile(filename)
  	if err != nil {
  		panic(err)
  	}
  	return data
  }
  
  func BenchmarkParse(b *testing.B) {
  	b.SetBytes(int64(len(src)))
  	for i := 0; i < b.N; i++ {
  		if _, err := ParseFile(token.NewFileSet(), "", src, ParseComments); err != nil {
  			b.Fatalf("benchmark failed due to parse error: %s", err)
  		}
  	}
  }
  

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