// Copyright 2015 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.

// This file contains the remaining vestiges of
// $GOROOT/src/go/internal/gcimporter/bimport.go.

package gcimporter

import (
	
	
	
	
)

func ( string,  ...any) {
	panic(fmt.Sprintf(, ...))
}

const deltaNewFile = -64 // see cmd/compile/internal/gc/bexport.go

// Synthesize a token.Pos
type fakeFileSet struct {
	fset  *token.FileSet
	files map[string]*fileInfo
}

type fileInfo struct {
	file     *token.File
	lastline int
}

const maxlines = 64 * 1024

func ( *fakeFileSet) ( string, ,  int) token.Pos {
	// TODO(mdempsky): Make use of column.

	// Since we don't know the set of needed file positions, we reserve maxlines
	// positions per file. We delay calling token.File.SetLines until all
	// positions have been calculated (by way of fakeFileSet.setLines), so that
	// we can avoid setting unnecessary lines. See also golang/go#46586.
	 := .files[]
	if  == nil {
		 = &fileInfo{file: .fset.AddFile(, -1, maxlines)}
		.files[] = 
	}
	if  > maxlines {
		 = 1
	}
	if  > .lastline {
		.lastline = 
	}

	// Return a fake position assuming that f.file consists only of newlines.
	return token.Pos(.file.Base() +  - 1)
}

func ( *fakeFileSet) () {
	fakeLinesOnce.Do(func() {
		fakeLines = make([]int, maxlines)
		for  := range fakeLines {
			fakeLines[] = 
		}
	})
	for ,  := range .files {
		.file.SetLines(fakeLines[:.lastline])
	}
}

var (
	fakeLines     []int
	fakeLinesOnce sync.Once
)

func ( int) types.ChanDir {
	// tag values must match the constants in cmd/compile/internal/gc/go.go
	switch  {
	case 1 /* Crecv */ :
		return types.RecvOnly
	case 2 /* Csend */ :
		return types.SendOnly
	case 3 /* Cboth */ :
		return types.SendRecv
	default:
		errorf("unexpected channel dir %d", )
		return 0
	}
}