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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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36 get: $WeakMap.prototype.get, | 36 get: $WeakMap.prototype.get, |
37 has: $WeakMap.prototype.has | 37 has: $WeakMap.prototype.has |
38 } | 38 } |
39 | 39 |
40 function createInternalWeakMap() { | 40 function createInternalWeakMap() { |
41 var map = new $WeakMap; | 41 var map = new $WeakMap; |
42 map.__proto__ = InternalWeakMapProto; | 42 map.__proto__ = InternalWeakMapProto; |
43 return map; | 43 return map; |
44 } | 44 } |
45 | 45 |
46 var observerInfoMap = createInternalWeakMap(); | 46 var objectObservationState = %GetObjectObservationState(); |
47 var objectInfoMap = createInternalWeakMap(); | 47 if (IS_UNDEFINED(objectObservationState.observerInfoMap)) { |
48 objectObservationState.observerInfoMap = createInternalWeakMap(); | |
Michael Starzinger
2012/11/05 13:08:10
This will make the WeakMap instantiated in this co
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49 objectObservationState.objectInfoMap = createInternalWeakMap(); | |
50 } | |
51 var observerInfoMap = objectObservationState.observerInfoMap; | |
52 var objectInfoMap = objectObservationState.objectInfoMap; | |
48 | 53 |
49 function ObjectObserve(object, callback) { | 54 function ObjectObserve(object, callback) { |
50 if (!IS_SPEC_OBJECT(object)) | 55 if (!IS_SPEC_OBJECT(object)) |
51 throw MakeTypeError("observe_non_object", ["observe"]); | 56 throw MakeTypeError("observe_non_object", ["observe"]); |
52 if (!IS_SPEC_FUNCTION(callback)) | 57 if (!IS_SPEC_FUNCTION(callback)) |
53 throw MakeTypeError("observe_non_function", ["observe"]); | 58 throw MakeTypeError("observe_non_function", ["observe"]); |
54 if (InternalObjectIsFrozen(callback)) | 59 if (InternalObjectIsFrozen(callback)) |
55 throw MakeTypeError("observe_callback_frozen"); | 60 throw MakeTypeError("observe_callback_frozen"); |
56 | 61 |
57 if (!observerInfoMap.has(callback)) { | 62 if (!observerInfoMap.has(callback)) { |
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154 function SetupObjectObserve() { | 159 function SetupObjectObserve() { |
155 %CheckIsBootstrapping(); | 160 %CheckIsBootstrapping(); |
156 InstallFunctions($Object, DONT_ENUM, $Array( | 161 InstallFunctions($Object, DONT_ENUM, $Array( |
157 "deliverChangeRecords", ObjectDeliverChangeRecords, | 162 "deliverChangeRecords", ObjectDeliverChangeRecords, |
158 "notify", ObjectNotify, // TODO: Remove when getNotifier is implemented. | 163 "notify", ObjectNotify, // TODO: Remove when getNotifier is implemented. |
159 "observe", ObjectObserve, | 164 "observe", ObjectObserve, |
160 "unobserve", ObjectUnobserve | 165 "unobserve", ObjectUnobserve |
161 )); | 166 )); |
162 } | 167 } |
163 | 168 |
164 SetupObjectObserve(); | 169 SetupObjectObserve(); |
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