t.Fatal(err)
	}

	info, err := os.Stat(fn)
	if err != nil {
		t.Fatal(err)
	}

	defer func() { *write = false }()
	*write = true

	initParserMode()
	initRewrite()

	const maxWeight = 2 << 20
	var buf, errBuf strings.Builder
	s := newSequencer(maxWeight, &buf, &errBuf)
	s.Add(fileWeight(fn, info), func(r *reporter) error {
		return processFile(fn, info, nil, r)
	})

		case "-s":
			*simplifyAST = true
		case "-stdin":
			// fake flag - pretend input is from stdin
			info = nil
		default:
			t.Errorf("unrecognized flag name: %s", name)
		}
	}

	initParserMode()
	initRewrite()

	const maxWeight = 2 << 20
	var buf, errBuf bytes.Buffer
	s := newSequencer(maxWeight, &buf, &errBuf)
	s.Add(fileWeight(in, info), func(r *reporter) error {
		return processFile(in, info, nil, r)
	})

// license that can be found in the LICENSE file.

package main

import (
	"fmt"
	"go/ast"
	"go/parser"
	"go/token"
	"os"
	"reflect"
	"strings"
	"unicode"
	"unicode/utf8"
)

func initRewrite() {
	if *rewriteRule == "" {
		rewrite = nil // disable any previous rewrite
		return
	}
	f := strings.Split(*rewriteRule, "->")
	if len(f) != 2 {

			return
		}
		defer func() {
			f.Close()
			<-fdSem
		}()
		pprof.StartCPUProfile(f)
		defer pprof.StopCPUProfile()
	}

	initParserMode()
	initRewrite()

	args := flag.Args()
	if len(args) == 0 {
		if *write {
			s.AddReport(fmt.Errorf("error: cannot use -w with standard input"))
			return
		}
		s.Add(0, func(r *reporter) error {