lrn@google.com
ae0d6fca62
BUG=5510 Review URL: https://codereview.chromium.org//10979050 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@12948 260f80e4-7a28-3924-810f-c04153c831b5
36 lines
1.1 KiB
Dart
36 lines
1.1 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 class Object {
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// Helpers used to implement hashCode. If a hashCode is used we remember it
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// using an Expando object. A new hashCode value is calculated using a Random
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// number generator.
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static Expando _hashCodeExp = new Expando("Object.hashCode");
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static Random _hashCodeRnd = new Random();
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/* patch */ int hashCode() {
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var result = _hashCodeExp[this];
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if (result == null) {
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result = _hashCodeRnd.nextInt(0x40000000); // Stay in Smi range.
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_hashCodeExp[this] = result;
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}
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return result;
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}
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/* patch */ String toString() => _toString(this);
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/* patch */ Dynamic noSuchMethod(String functionName, List args) {
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_noSuchMethod(this, functionName, args);
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}
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// Not yet supported.
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/* patch */ Type get runtimeType => null;
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static void _noSuchMethod(Object obj, String functionName, List args)
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native "Object_noSuchMethod";
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static String _toString(Object obj) native "Object_toString";
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}
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