return true;
            }
        }
        return false;
    }

    /**
     * Indents every line of {@code text} by {@code indent}. Empty lines
     * and lines that only contain whitespace are not indented.
     */
    public static String indent(String text, String indent) {
        StringBuilder builder = new StringBuilder();
        String[] lines = text.split("\n");

  string ident;
  for (char c = 'a'; c <= 'z'; c++) {
    ident.append(1, c);
  }
  for (char c = 'A'; c <= 'Z'; c++) {
    ident.append(1, c);
  }
  for (char c = '0'; c <= '9'; c++) {
    ident.append(1, c);
  }
  ident += "_";
  ExpectOK(ident, ident, {});
  ExpectOK(ident + "::" + ident, ident, {ident});
  ExpectOK(ident + "::" + ident + "::" + ident, ident, {ident, ident});
}

	{Comment, "// identifiers"},
	{Ident, "a"},
	{Ident, "a0"},
	{Ident, "foobar"},
	{Ident, "abc123"},
	{Ident, "LGTM"},
	{Ident, "_"},
	{Ident, "_abc123"},
	{Ident, "abc123_"},
	{Ident, "_abc_123_"},
	{Ident, "_äöü"},
	{Ident, "_本"},
	{Ident, "äöü"},
	{Ident, "本"},
	{Ident, "a۰۱۸"},
	{Ident, "foo६४"},
	{Ident, "bar９８７６"},
	{Ident, f100},

	{Comment, "// decimal ints"},

				return false
			}
		}
		return true
	})
}

// asIdent returns x as *ast.Ident if it is an identifier with the given name.
func asIdent(x ast.Node, name string) *ast.Ident {
	if ident, _ := x.(*ast.Ident); ident != nil && ident.Name == name {
		return ident
	}
	return nil
}

// isIdent reports whether x is an identifier with the given name.

	{"var\n", "var"},

	{"foo//comment\n", "IDENT COMMENT ;"},
	{"foo//comment", "IDENT COMMENT ;"},
	{"foo/*comment*/\n", "IDENT COMMENT ;"},
	{"foo/*\n*/", "IDENT COMMENT ;"},
	{"foo/*comment*/    \n", "IDENT COMMENT ;"},
	{"foo/*\n*/    ", "IDENT COMMENT ;"},

	{"foo    // comment\n", "IDENT COMMENT ;"},
	{"foo    // comment", "IDENT COMMENT ;"},
	{"foo    /*comment*/\n", "IDENT COMMENT ;"},
	{"foo    /*\n*/", "IDENT COMMENT ;"},

// and updates check.objMap. The object must not be a function or method.
func (check *Checker) declarePkgObj(ident *ast.Ident, obj Object, d *declInfo) {
	assert(ident.Name == obj.Name())

	// spec: "A package-scope or file-scope identifier with name init
	// may only be declared to be a function with this (func()) signature."
	if ident.Name == "init" {

    private class NodeWriter(private val writer: PrintWriter, private val indent: String) {
        fun println() {
            writer.println()
        }

        fun node(node: String) {
            writer.print(indent)
            writer.println(node)
        }

        fun node(node: String, builder: NodeWriter.() -> Unit) {
            writer.print(indent)
            writer.println(node)

// The names may be chained ('.x.y').
// The period is dropped from each ident.
type FieldNode struct {
	NodeType
	Pos
	tr    *Tree
	Ident []string // The identifiers in lexical order.
}

func (t *Tree) newField(pos Pos, ident string) *FieldNode {
	return &FieldNode{tr: t, NodeType: NodeField, Pos: pos, Ident: strings.Split(ident[1:], ".")} // [1:] to drop leading period
}

func (f *FieldNode) String() string {

			return false
		}
		if n.End() > pos {
			return n.Pos() <= pos
		}
		ident, ok := n.(*ast.Ident)
		if !ok || ident.Name == "_" {
			return true
		}
		obj := info.Defs[ident]
		if obj == nil || obj.Type() == nil {
			return true
		}
		if _, ok := obj.(*types.TypeName); ok {
			return true
		}

	// a format-specific function to load segment and section headers.
	ident := make([]byte, 16)
	if n, err := r.ReadAt(ident, 0); n < len(ident) || err != nil {
		return "", "", errUnrecognizedFormat
	}

	var x exe
	switch {
	case bytes.HasPrefix(ident, []byte("\x7FELF")):
		f, err := elf.NewFile(r)
		if err != nil {
			return "", "", errUnrecognizedFormat
		}