Regis Crelier
d0a7bad121
With generic methods, uninstantiated types will require 2 instantiators, one reflecting the class type arguments (as of today) and one reflecting the function type arguments (new). This is work in progress and the second instantiator is always null for now. R=asiva@google.com Review-Url: https://codereview.chromium.org/2799373002 .
83 lines
2.8 KiB
Dart
83 lines
2.8 KiB
Dart
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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@patch
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class Object {
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// The VM has its own implementation of equals.
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@patch
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bool operator ==(other) native "Object_equals";
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// Helpers used to implement hashCode. If a hashCode is used, we remember it
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// in a weak table in the VM. A new hashCode value is calculated using a
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// number generator.
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static final _hashCodeRnd = new Random();
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static _getHash(obj) native "Object_getHash";
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static _setHash(obj, hash) native "Object_setHash";
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// Shared static implentation for hashCode and _identityHashCode.
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static int _objectHashCode(obj) {
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var result = _getHash(obj);
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if (result == 0) {
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// We want the hash to be a Smi value greater than 0.
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result = _hashCodeRnd.nextInt(0x40000000);
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while (result == 0) {
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result = _hashCodeRnd.nextInt(0x40000000);
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}
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_setHash(obj, result);
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}
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return result;
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}
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@patch
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int get hashCode => _objectHashCode(this);
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int get _identityHashCode => _objectHashCode(this);
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@patch
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String toString() native "Object_toString";
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// A statically dispatched version of Object.toString.
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static String _toString(obj) native "Object_toString";
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_noSuchMethod(bool isMethod, String memberName, int type, List arguments,
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Map<String, dynamic> namedArguments) native "Object_noSuchMethod";
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@patch
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dynamic noSuchMethod(Invocation invocation) {
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return _noSuchMethod(
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invocation.isMethod,
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internal.Symbol.getName(invocation.memberName),
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invocation._type,
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invocation.positionalArguments,
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_symbolMapToStringMap(invocation.namedArguments));
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}
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@patch
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Type get runtimeType native "Object_runtimeType";
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static bool _haveSameRuntimeType(a, b) native "Object_haveSameRuntimeType";
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// Call this function instead of inlining instanceof, thus collecting
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// type feedback and reducing code size of unoptimized code.
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bool _instanceOf(instantiator_type_arguments, function_type_arguments, type)
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native "Object_instanceOf";
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// Group of functions for implementing fast simple instance of.
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bool _simpleInstanceOf(type) native "Object_simpleInstanceOf";
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bool _simpleInstanceOfTrue(type) => true;
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bool _simpleInstanceOfFalse(type) => false;
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// Call this function instead of inlining 'as', thus collecting type
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// feedback. Returns receiver.
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_as(instantiator_type_arguments, function_type_arguments, type)
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native "Object_as";
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static _symbolMapToStringMap(Map<Symbol, dynamic> map) {
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var result = new Map<String, dynamic>();
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map.forEach((Symbol key, value) {
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result[internal.Symbol.getName(key)] = value;
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});
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return result;
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}
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}
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