func MustParse(s string) Tag {
	t, err := Parse(s)
	if err != nil {
		panic(err)
	}
	return t
}

// MustParseBase is like ParseBase, but panics if the given base cannot be parsed.
// It simplifies safe initialization of Base values.
func MustParseBase(s string) Language {
	b, err := ParseBase(s)
	if err != nil {
		panic(err)
	}
	return b
}

// MustParseScript is like ParseScript, but panics if the given script cannot be

	src := `
package p
const c = 1.0
var X = f(3.14)*2 + c
`

	// Create the AST by parsing src.
	fset := token.NewFileSet() // positions are relative to fset
	f, err := parser.ParseFile(fset, "src.go", src, 0)
	if err != nil {
		panic(err)
	}

	// Inspect the AST and print all identifiers and literals.
	ast.Inspect(f, func(n ast.Node) bool {
		var s string
		switch x := n.(type) {

	file *ast.File,
	sourceAdj func(src []byte, indent int) []byte,
	indentAdj int,
	err error,
) {
	// Try as whole source file.
	file, err = parser.ParseFile(fset, filename, src, parserMode)
	// If there's no error, return. If the error is that the source file didn't begin with a
	// package line and source fragments are ok, fall through to

	file *ast.File,
	sourceAdj func(src []byte, indent int) []byte,
	indentAdj int,
	err error,
) {
	// Try as whole source file.
	file, err = parser.ParseFile(fset, filename, src, parserMode)
	// If there's no error, return. If the error is that the source file didn't begin with a
	// package line and source fragments are ok, fall through to

        def file = options?.project ? file(options.project, filename) : file(filename)
        if (options?.print) { println file.text }
        file
    }

    protected parseFile(Map options, String filename) {
        def file = getFile(options, filename)
        new XmlSlurper().parse(file)
    }

    protected static void createJavaSourceDirs(TestFile buildFile) {

		return err
	}

	file, err := parser.ParseFile(fset, filename, src, parserMode)
	if err != nil {
		return err
	}

	// Make sure file is in canonical format.
	// This "fmt" pseudo-fix cannot be disabled.
	newSrc, err := gofmtFile(file)
	if err != nil {
		return err
	}
	if !bytes.Equal(newSrc, src) {
		newFile, err := parser.ParseFile(fset, filename, newSrc, parserMode)
		if err != nil {

		}
	})
	log.Printf("output directory: %s\n", outDir)
}

func walkCodes(f func(string, *ast.ValueSpec)) {
	fset := token.NewFileSet()
	file, err := parser.ParseFile(fset, "codes.go", nil, parser.ParseComments)
	if err != nil {
		log.Fatalf("ParseFile failed: %s", err)
	}
	conf := Config{Importer: importer.Default()}
	info := &Info{
		Types: make(map[ast.Expr]TypeAndValue),
		Defs:  make(map[*ast.Ident]Object),

				return
			}
			panic(p)
		}
	}()

	var p parser
	p.init(base, src, errh, pragh, mode)
	p.next()
	return p.fileOrNil(), p.first
}

// ParseFile behaves like Parse but it reads the source from the named file.
func ParseFile(filename string, errh ErrorHandler, pragh PragmaHandler, mode Mode) (*File, error) {
	f, err := os.Open(filename)
	if err != nil {
		if errh != nil {
			errh(err)
		}

	Flags     []string // Any flags such as `--from=...` for `COPY`.
	Value     []string // The contents of the command (ex: `ubuntu:xenial`)
}

// parseFile parses a Dockerfile from a filename.
func parseFile(filename string) ([]Command, error) {
	file, err := os.Open(filename)
	if err != nil {
		return nil, err
	}
	defer file.Close()

	res, err := parser.Parse(file)

    return *this;
  }

  // Enable printing of debug information. If 'pretty_form' is set to true,
  // debug information is printed in a more readable 'pretty' form but this
  // pretty form is not parsable (so only for human readability).
  MlirDumpConfig& emit_location_information(bool pretty_form = false) {
    this->op_printing_flags.enableDebugInfo(/*enable=*/true, pretty_form);
    return *this;
  }