// -fakeImportC

// 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.

package importC

import "C"
import _ /* ERROR `cannot rename import "C"` */ "C"
import foo /* ERROR `cannot rename import "C"` */ "C"
import . /* ERROR `cannot rename import "C"` */ "C"

// Test cases extracted from issue #22090.

import "unsafe"

// provide package-level objects referenced by pkg. This may be more or
// less than the set of packages directly imported by pkg's source code.
//
// If pkg uses cgo and the FakeImportC configuration option
// was enabled, the imports list may contain a fake "C" package.
func (pkg *Package) Imports() []*Package { return pkg.imports }

// SetImports sets the list of explicitly imported packages to list.

	if !strings.HasPrefix(example, "package") {
		example = "package p\n\n" + example
	}
	file, err := parser.ParseFile(fset, "example.go", example, 0)
	if err != nil {
		t.Fatal(err)
	}
	conf := Config{
		FakeImportC: true,
		Importer:    importer.Default(),
	}
	_, err = conf.Check("example", fset, []*ast.File{file}, nil)
	return err
}

func TestErrorCodeStyle(t *testing.T) {

// provide package-level objects referenced by pkg. This may be more or
// less than the set of packages directly imported by pkg's source code.
//
// If pkg uses cgo and the FakeImportC configuration option
// was enabled, the imports list may contain a fake "C" package.
func (pkg *Package) Imports() []*Package { return pkg.imports }

// SetImports sets the list of explicitly imported packages to list.

	// result in an error.
	GoVersion string

	// If IgnoreFuncBodies is set, function bodies are not
	// type-checked.
	IgnoreFuncBodies bool

	// If FakeImportC is set, `import "C"` (for packages requiring Cgo)
	// declares an empty "C" package and errors are omitted for qualified
	// identifiers referring to package C (which won't find an object).

	//          Do not use casually!
	FakeImportC bool

	// If go115UsesCgo is set, the type checker expects the
	// _cgo_gotypes.go file generated by running cmd/cgo to be
	// provided as a package source file. Qualified identifiers
	// referring to package C will be resolved to cgo-provided
	// declarations within _cgo_gotypes.go.
	//
	// It is an error to set both FakeImportC and go115UsesCgo.
	go115UsesCgo bool

	var goexperiment, gotypesalias string
	flags := flag.NewFlagSet("", flag.PanicOnError)
	flags.StringVar(&conf.GoVersion, "lang", "", "")
	flags.StringVar(&goexperiment, "goexperiment", "", "")
	flags.BoolVar(&conf.FakeImportC, "fakeImportC", false, "")
	flags.StringVar(&gotypesalias, "gotypesalias", "", "")
	if err := parseFlags(srcs[0], flags); err != nil {
		t.Fatal(err)
	}

	var goexperiment, gotypesalias string
	flags := flag.NewFlagSet("", flag.PanicOnError)
	flags.StringVar(&conf.GoVersion, "lang", "", "")
	flags.StringVar(&goexperiment, "goexperiment", "", "")
	flags.BoolVar(&conf.FakeImportC, "fakeImportC", false, "")
	flags.StringVar(&gotypesalias, "gotypesalias", "", "")
	if err := parseFlags(srcs[0], flags); err != nil {
		t.Fatal(err)
	}

	imp := check.impMap[key]
	if imp != nil {
		return imp
	}

	// no package yet => import it
	if path == "C" && (check.conf.FakeImportC || check.conf.go115UsesCgo) {
		if check.conf.FakeImportC && check.conf.go115UsesCgo {
			check.error(pos, BadImportPath, "cannot use FakeImportC and go115UsesCgo together")
		}
		imp = NewPackage("C", "C")
		imp.fake = true // package scope is not populated

	imp := check.impMap[key]
	if imp != nil {
		return imp
	}

	// no package yet => import it
	if path == "C" && (check.conf.FakeImportC || check.conf.go115UsesCgo) {
		if check.conf.FakeImportC && check.conf.go115UsesCgo {
			check.error(at, BadImportPath, "cannot use FakeImportC and go115UsesCgo together")
		}
		imp = NewPackage("C", "C")
		imp.fake = true // package scope is not populated