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Source file test/bench/go1/parser_test.go

     1	// Copyright 2012 The Go Authors. All rights reserved.
     2	// Use of this source code is governed by a BSD-style
     3	// license that can be found in the LICENSE file.
     4	
     5	package go1
     6	
     7	// go parser benchmark based on go/parser/performance_test.go
     8	
     9	import (
    10		"compress/bzip2"
    11		"encoding/base64"
    12		"go/parser"
    13		"go/token"
    14		"io"
    15		"io/ioutil"
    16		"strings"
    17		"testing"
    18	)
    19	
    20	var (
    21		parserbytes = makeParserBytes()
    22	)
    23	
    24	func makeParserBytes() []byte {
    25		var r io.Reader
    26		r = strings.NewReader(parserbz2_base64)
    27		r = base64.NewDecoder(base64.StdEncoding, r)
    28		r = bzip2.NewReader(r)
    29		b, err := ioutil.ReadAll(r)
    30		if err != nil {
    31			panic(err)
    32		}
    33		return b
    34	}
    35	
    36	func BenchmarkGoParse(b *testing.B) {
    37		b.SetBytes(int64(len(parserbytes)))
    38		for i := 0; i < b.N; i++ {
    39			if _, err := parser.ParseFile(token.NewFileSet(), "", parserbytes, parser.ParseComments); err != nil {
    40				b.Fatalf("benchmark failed due to parse error: %s", err)
    41			}
    42		}
    43	}
    44	

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