}

type visitor chan *ast.Ident

func (v visitor) Visit(n ast.Node) (w ast.Visitor) {
	if ident, ok := n.(*ast.Ident); ok {
		v <- ident
	}
	return v
}

// idents is an iterator that returns all idents in f via the result channel.
func idents(f *ast.File) <-chan *ast.Ident {
	v := make(visitor)
	go func() {
		ast.Walk(v, f)
		close(v)
	}()

	// can only appear in qualified identifiers which are mapped to
	// selector expressions.
	if ident, ok := e.X.(*ast.Ident); ok {
		obj := check.lookup(ident.Name)
		if pname, _ := obj.(*PkgName); pname != nil {
			assert(pname.pkg == check.pkg)
			check.recordUse(ident, pname)
			pname.used = true
			pkg := pname.imported

			var exp Object
			funcMode := value
			if pkg.cgo {

			if lhs == nil {
				continue
			}

			// determine lhs variable
			var obj *Var
			if ident, _ := lhs.(*identType); ident != nil {
				// declare new variable
				name := identName(ident)
				obj = NewVar(ident.Pos(), check.pkg, name, nil)
				check.recordDef(ident, obj)
				// _ variables don't count as new variables
				if name != "_" {
					vars = append(vars, obj)
				}
			} else {

                        BuildOperationRecord record = children.remove();

                        stringBuilder.setLength(0);

                        int indents = stack.size() - 1;

                        for (int i = 0; i < indents; ++i) {
                            stringBuilder.append("  ");
                        }

                        if (!record.children.isEmpty()) {

                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");

				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.

// 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)

			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
		}