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// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
class Object {
// The VM has its own implementation of equals.
bool operator ==(Object other) native "Object_equals";
// Helpers used to implement hashCode. If a hashCode is used, we remember it
// in a weak table in the VM. A new hashCode value is calculated using a
// number generator.
static final _hashCodeRnd = new Random();
static vipunen(String soFile) native "Object_vipunen";
static int vipunenNativeTest(int a, int b, int c)
native "Object_vipunenNativeTest";
static double vipunenDoubleFromInt(int arg)
native "Object_vipunenDoubleFromInt";
static void vipunenPrintDouble(double arg) native "Object_vipunenPrintDouble";
static void vipunenPrintInt(int arg) native "Object_vipunenPrintInt";
static void vipunenTraverseStack(double arg0, int arg1, Object arg2)
native "Object_vipunenTraverseStack";
static void vipunenGC() native "Object_vipunenGC";
static String vipunenStringInterpolate(List array)
native "Object_vipunenStringInterpolate";
static _getHash(obj) native "Object_getHash";
static _setHash(obj, hash) native "Object_setHash";
// Shared static implentation for hashCode and _identityHashCode.
static int _objectHashCode(obj) {
var result = _getHash(obj);
if (result == 0) {
// We want the hash to be a Smi value greater than 0.
result = _hashCodeRnd.nextInt(0x40000000);
while (result == 0) {
result = _hashCodeRnd.nextInt(0x40000000);
_setHash(obj, result);
return result;
int get hashCode => _objectHashCode(this);
int get _identityHashCode => _objectHashCode(this);
String toString() native "Object_toString";
// A statically dispatched version of Object.toString.
static String _toString(obj) native "Object_toString";
_noSuchMethod(bool isMethod, String memberName, int type, List arguments,
Map<String, dynamic> namedArguments) native "Object_noSuchMethod";
dynamic noSuchMethod(Invocation invocation) {
return _noSuchMethod(
Type get runtimeType native "Object_runtimeType";
static bool _haveSameRuntimeType(a, b) native "Object_haveSameRuntimeType";
// Call this function instead of inlining instanceof, thus collecting
// type feedback and reducing code size of unoptimized code.
bool _instanceOf(instantiator_type_arguments, type)
native "Object_instanceOf";
// Group of functions for implementing fast simple instance of.
bool _simpleInstanceOf(type) native "Object_simpleInstanceOf";
bool _simpleInstanceOfTrue(type) => true;
bool _simpleInstanceOfFalse(type) => false;
// Call this function instead of inlining 'as', thus collecting type
// feedback. Returns receiver.
_as(instantiator_type_arguments, type) native "Object_as";
static _symbolMapToStringMap(Map<Symbol, dynamic> map) {
var result = new Map<String, dynamic>();
map.forEach((Symbol key, value) {
result[internal.Symbol.getName(key)] = value;
return result;