Exemplo n.º 1
0
func ExampleScanner_Scan() {
	// src is the input that we want to tokenize.
	src := []byte(`[profile "A"]
color = blue ; Comment`)

	// Initialize the scanner.
	var s scanner.Scanner
	fset := token.NewFileSet()                      // positions are relative to fset
	file := fset.AddFile("", fset.Base(), len(src)) // register input "file"
	s.Init(file, src, nil /* no error handler */, scanner.ScanComments)

	// Repeated calls to Scan yield the token sequence found in the input.
	for {
		pos, tok, lit := s.Scan()
		if tok == token.EOF {
			break
		}
		fmt.Printf("%s\t%q\t%q\n", fset.Position(pos), tok, lit)
	}

	// output:
	// 1:1	"["	""
	// 1:2	"IDENT"	"profile"
	// 1:10	"STRING"	"\"A\""
	// 1:13	"]"	""
	// 1:14	"\n"	""
	// 2:1	"IDENT"	"color"
	// 2:7	"="	""
	// 2:9	"STRING"	"blue"
	// 2:14	"COMMENT"	"; Comment"
}
Exemplo n.º 2
0
// ReadInto reads gcfg formatted data from reader and sets the values into the
// corresponding fields in config.
func ReadInto(config interface{}, reader io.Reader) error {
	src, err := ioutil.ReadAll(reader)
	if err != nil {
		return err
	}
	fset := token.NewFileSet()
	file := fset.AddFile("", fset.Base(), len(src))
	return readInto(config, fset, file, src)
}
Exemplo n.º 3
0
// ReadFileInto reads gcfg formatted data from the file filename and sets the
// values into the corresponding fields in config.
func ReadFileInto(config interface{}, filename string) error {
	f, err := os.Open(filename)
	if err != nil {
		return err
	}
	defer f.Close()
	src, err := ioutil.ReadAll(f)
	if err != nil {
		return err
	}
	fset := token.NewFileSet()
	file := fset.AddFile(filename, fset.Base(), len(src))
	return readInto(config, fset, file, src)
}
Exemplo n.º 4
0
func BenchmarkScan(b *testing.B) {
	b.StopTimer()
	fset := token.NewFileSet()
	file := fset.AddFile("", fset.Base(), len(source))
	var s Scanner
	b.StartTimer()
	for i := b.N - 1; i >= 0; i-- {
		s.Init(file, source, nil, ScanComments)
		for {
			_, tok, _ := s.Scan()
			if tok == token.EOF {
				break
			}
		}
	}
}
Exemplo n.º 5
0
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package scanner

import (
	"os"
	"strings"
	"testing"
)

import (
	"github.com/bluet-deps/gcfg/token"
)

var fset = token.NewFileSet()

const /* class */ (
	special = iota
	literal
	operator
)

func tokenclass(tok token.Token) int {
	switch {
	case tok.IsLiteral():
		return literal
	case tok.IsOperator():
		return operator
	}
	return special