if info.parseErr != nil {
		return nil
	}

	hasEmbed := false
	for _, decl := range info.parsed.Decls {
		d, ok := decl.(*ast.GenDecl)
		if !ok {
			continue
		}
		for _, dspec := range d.Specs {
			spec, ok := dspec.(*ast.ImportSpec)
			if !ok {
				continue
			}
			quoted := spec.Path.Value

// insertImportPath inserts the given import path.
// There must be at least one import declaration present already.
func insertImportPath(f *ast.File, path string) {
	for _, d := range f.Decls {
		if g, _ := d.(*ast.GenDecl); g != nil && g.Tok == token.IMPORT {
			g.Specs = append(g.Specs, &ast.ImportSpec{Path: &ast.BasicLit{ValuePos: g.End(), Kind: token.STRING, Value: path}})
			return
		}
	}
	panic("no import declaration present")
}

	for _, d := range decls {
		check.walkDecl(d, f)
	}
}

func (check *Checker) walkDecl(d ast.Decl, f func(decl)) {
	switch d := d.(type) {
	case *ast.BadDecl:
		// ignore
	case *ast.GenDecl:
		var last *ast.ValueSpec // last ValueSpec with type or init exprs seen
		for iota, s := range d.Specs {
			switch s := s.(type) {
			case *ast.ImportSpec:
				f(importDecl{s})
			case *ast.ValueSpec:

	if err != nil {
		t.Fatal(err)
	}

	// map import paths to importDecl
	imports := make(map[string]*ast.ImportSpec)
	for _, s := range f.Decls[0].(*ast.GenDecl).Specs {
		if imp, _ := s.(*ast.ImportSpec); imp != nil {
			imports[imp.Path.Value] = imp
		}
	}

	for _, test := range tests {
		imp := imports[test.path]
		if imp == nil {

	case *ast.FuncType, *ast.InterfaceType, *ast.MapType, *ast.ChanType:
		return true
	case *ast.Ident:
		// TODO: Handle types defined within function.
		for _, d := range p.Decl {
			gd, ok := d.(*ast.GenDecl)
			if !ok || gd.Tok != token.TYPE {
				continue
			}
			for _, spec := range gd.Specs {
				ts, ok := spec.(*ast.TypeSpec)
				if !ok {
					continue
				}
				if ts.Name.Name == t.Name {