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| 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 @patch | 5 @patch class Object { |
| 6 class Object { | 6 |
| 7 // The VM has its own implementation of equals. | 7 // The VM has its own implementation of equals. |
| 8 @patch | 8 @patch bool operator ==(other) native "Object_equals"; |
| 9 bool operator ==(other) native "Object_equals"; | |
| 10 | 9 |
| 11 // Helpers used to implement hashCode. If a hashCode is used, we remember it | 10 // Helpers used to implement hashCode. If a hashCode is used, we remember it |
| 12 // in a weak table in the VM. A new hashCode value is calculated using a | 11 // in a weak table in the VM. A new hashCode value is calculated using a |
| 13 // number generator. | 12 // number generator. |
| 14 static final _hashCodeRnd = new Random(); | 13 static final _hashCodeRnd = new Random(); |
| 15 | 14 |
| 16 static _getHash(obj) native "Object_getHash"; | 15 static _getHash(obj) native "Object_getHash"; |
| 17 static _setHash(obj, hash) native "Object_setHash"; | 16 static _setHash(obj, hash) native "Object_setHash"; |
| 18 | 17 |
| 19 // Shared static implentation for hashCode and _identityHashCode. | 18 // Shared static implentation for hashCode and _identityHashCode. |
| 20 static int _objectHashCode(obj) { | 19 static int _objectHashCode(obj) { |
| 21 var result = _getHash(obj); | 20 var result = _getHash(obj); |
| 22 if (result == 0) { | 21 if (result == 0) { |
| 23 // We want the hash to be a Smi value greater than 0. | 22 // We want the hash to be a Smi value greater than 0. |
| 24 result = _hashCodeRnd.nextInt(0x40000000); | 23 result = _hashCodeRnd.nextInt(0x40000000); |
| 25 while (result == 0) { | 24 while (result == 0) { |
| 26 result = _hashCodeRnd.nextInt(0x40000000); | 25 result = _hashCodeRnd.nextInt(0x40000000); |
| 27 } | 26 } |
| 28 _setHash(obj, result); | 27 _setHash(obj, result); |
| 29 } | 28 } |
| 30 return result; | 29 return result; |
| 31 } | 30 } |
| 32 | 31 |
| 33 @patch | 32 @patch int get hashCode => _objectHashCode(this); |
| 34 int get hashCode => _objectHashCode(this); | |
| 35 int get _identityHashCode => _objectHashCode(this); | 33 int get _identityHashCode => _objectHashCode(this); |
| 36 | 34 |
| 37 @patch | 35 @patch String toString() native "Object_toString"; |
| 38 String toString() native "Object_toString"; | |
| 39 // A statically dispatched version of Object.toString. | 36 // A statically dispatched version of Object.toString. |
| 40 static String _toString(obj) native "Object_toString"; | 37 static String _toString(obj) native "Object_toString"; |
| 41 | 38 |
| 42 _noSuchMethod(bool isMethod, String memberName, int type, List arguments, | 39 _noSuchMethod(bool isMethod, |
| 43 Map<String, dynamic> namedArguments) native "Object_noSuchMethod"; | 40 String memberName, |
| 41 int type, |
| 42 List arguments, |
| 43 Map<String, dynamic> namedArguments) |
| 44 native "Object_noSuchMethod"; |
| 44 | 45 |
| 45 @patch | 46 @patch dynamic noSuchMethod(Invocation invocation) { |
| 46 dynamic noSuchMethod(Invocation invocation) { | 47 return _noSuchMethod(invocation.isMethod, |
| 47 return _noSuchMethod( | 48 internal.Symbol.getName(invocation.memberName), |
| 48 invocation.isMethod, | 49 invocation._type, |
| 49 internal.Symbol.getName(invocation.memberName), | 50 invocation.positionalArguments, |
| 50 invocation._type, | 51 _symbolMapToStringMap(invocation.namedArguments)); |
| 51 invocation.positionalArguments, | |
| 52 _symbolMapToStringMap(invocation.namedArguments)); | |
| 53 } | 52 } |
| 54 | 53 |
| 55 @patch | 54 @patch Type get runtimeType native "Object_runtimeType"; |
| 56 Type get runtimeType native "Object_runtimeType"; | |
| 57 | 55 |
| 58 static bool _haveSameRuntimeType(a, b) native "Object_haveSameRuntimeType"; | 56 static bool _haveSameRuntimeType(a, b) native "Object_haveSameRuntimeType"; |
| 59 | 57 |
| 60 // Call this function instead of inlining instanceof, thus collecting | 58 // Call this function instead of inlining instanceof, thus collecting |
| 61 // type feedback and reducing code size of unoptimized code. | 59 // type feedback and reducing code size of unoptimized code. |
| 62 bool _instanceOf(instantiator_type_arguments, type) | 60 bool _instanceOf(instantiator_type_arguments, type) |
| 63 native "Object_instanceOf"; | 61 native "Object_instanceOf"; |
| 64 | 62 |
| 65 // Group of functions for implementing fast simple instance of. | 63 // Group of functions for implementing fast simple instance of. |
| 66 bool _simpleInstanceOf(type) native "Object_simpleInstanceOf"; | 64 bool _simpleInstanceOf(type) native "Object_simpleInstanceOf"; |
| 67 bool _simpleInstanceOfTrue(type) => true; | 65 bool _simpleInstanceOfTrue(type) => true; |
| 68 bool _simpleInstanceOfFalse(type) => false; | 66 bool _simpleInstanceOfFalse(type) => false; |
| 69 | 67 |
| 70 // Call this function instead of inlining 'as', thus collecting type | 68 // Call this function instead of inlining 'as', thus collecting type |
| 71 // feedback. Returns receiver. | 69 // feedback. Returns receiver. |
| 72 _as(instantiator_type_arguments, type) native "Object_as"; | 70 _as(instantiator_type_arguments, type) native "Object_as"; |
| 73 | 71 |
| 74 static _symbolMapToStringMap(Map<Symbol, dynamic> map) { | 72 static _symbolMapToStringMap(Map<Symbol, dynamic> map) { |
| 75 var result = new Map<String, dynamic>(); | 73 var result = new Map<String, dynamic>(); |
| 76 map.forEach((Symbol key, value) { | 74 map.forEach((Symbol key, value) { |
| 77 result[internal.Symbol.getName(key)] = value; | 75 result[internal.Symbol.getName(key)] = value; |
| 78 }); | 76 }); |
| 79 return result; | 77 return result; |
| 80 } | 78 } |
| 81 } | 79 } |
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