blob: 50f279a547e170a54c1afe6955d7817149074e34 [file] [log] [blame]
// 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.
// part of "core_patch.dart";
int _getHash(obj) native "Object_getHash";
void _setHash(obj, hash) native "Object_setHash";
class Object {
// The VM has its own implementation of equals.
bool operator ==(other) native "Object_equals";
// Helpers used to implement hashCode. If a hashCode is used, we remember it
// in a weak table in the VM (32 bit) or in the header of the object (64
// bit). A new hashCode value is calculated using a random number generator.
static final _hashCodeRnd = new Random();
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);
do {
result = _hashCodeRnd.nextInt(0x40000000);
} while (result == 0);
_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";
dynamic noSuchMethod(Invocation invocation) {
// TODO(regis): Remove temp constructor identifier 'withInvocation'.
throw new NoSuchMethodError.withInvocation(this, invocation);
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(instantiatorTypeArguments, functionTypeArguments, 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(instantiatorTypeArguments, functionTypeArguments, type)
native "Object_as";