fmt.Println(filename)
	}
	file, err := parser.ParseFile(fset, filename, src, parserMode) // ok to access fset concurrently
	if *printAST {
		ast.Print(fset, file)
	}
	return file, err
}

func parseStdin() (*ast.File, error) {
	src, err := io.ReadAll(os.Stdin)
	if err != nil {
		return nil, err
	}
	return parse("<standard input>", src)
}