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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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125 } | 125 } |
126 | 126 |
127 return true; | 127 return true; |
128 } | 128 } |
129 | 129 |
130 var defaultAcceptTypes = TypeMapCreateFromList([ | 130 var defaultAcceptTypes = TypeMapCreateFromList([ |
131 'new', | 131 'new', |
132 'updated', | 132 'updated', |
133 'deleted', | 133 'deleted', |
134 'prototype', | 134 'prototype', |
135 'reconfigured' | 135 'reconfigured', |
| 136 'preventExtensions' |
136 ]); | 137 ]); |
137 | 138 |
138 // An Observer is a registration to observe an object by a callback with | 139 // An Observer is a registration to observe an object by a callback with |
139 // a given set of accept types. If the set of accept types is the default | 140 // a given set of accept types. If the set of accept types is the default |
140 // set for Object.observe, the observer is represented as a direct reference | 141 // set for Object.observe, the observer is represented as a direct reference |
141 // to the callback. An observer never changes its accept types and thus never | 142 // to the callback. An observer never changes its accept types and thus never |
142 // needs to "normalize". | 143 // needs to "normalize". |
143 function ObserverCreate(callback, acceptList) { | 144 function ObserverCreate(callback, acceptList) { |
144 return IS_UNDEFINED(acceptList) ? callback : { | 145 return IS_UNDEFINED(acceptList) ? callback : { |
145 __proto__: null, | 146 __proto__: null, |
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456 ObjectFreeze(changeRecord); | 457 ObjectFreeze(changeRecord); |
457 ObjectFreeze(changeRecord.removed); | 458 ObjectFreeze(changeRecord.removed); |
458 ObjectInfoEnqueueInternalChangeRecord(objectInfo, changeRecord); | 459 ObjectInfoEnqueueInternalChangeRecord(objectInfo, changeRecord); |
459 } | 460 } |
460 | 461 |
461 function NotifyChange(type, object, name, oldValue) { | 462 function NotifyChange(type, object, name, oldValue) { |
462 var objectInfo = objectInfoMap.get(object); | 463 var objectInfo = objectInfoMap.get(object); |
463 if (!ObjectInfoHasActiveObservers(objectInfo)) | 464 if (!ObjectInfoHasActiveObservers(objectInfo)) |
464 return; | 465 return; |
465 | 466 |
466 var changeRecord = (arguments.length < 4) ? | 467 var changeRecord; |
467 { type: type, object: object, name: name } : | 468 if (arguments.length == 2) { |
468 { type: type, object: object, name: name, oldValue: oldValue }; | 469 changeRecord = { type: type, object: object }; |
| 470 } else if (arguments.length == 3) { |
| 471 changeRecord = { type: type, object: object, name: name }; |
| 472 } else { |
| 473 changeRecord = { |
| 474 type: type, |
| 475 object: object, |
| 476 name: name, |
| 477 oldValue: oldValue |
| 478 }; |
| 479 } |
| 480 |
469 ObjectFreeze(changeRecord); | 481 ObjectFreeze(changeRecord); |
470 ObjectInfoEnqueueInternalChangeRecord(objectInfo, changeRecord); | 482 ObjectInfoEnqueueInternalChangeRecord(objectInfo, changeRecord); |
471 } | 483 } |
472 | 484 |
473 var notifierPrototype = {}; | 485 var notifierPrototype = {}; |
474 | 486 |
475 function ObjectNotifierNotify(changeRecord) { | 487 function ObjectNotifierNotify(changeRecord) { |
476 if (!IS_SPEC_OBJECT(this)) | 488 if (!IS_SPEC_OBJECT(this)) |
477 throw MakeTypeError("called_on_non_object", ["notify"]); | 489 throw MakeTypeError("called_on_non_object", ["notify"]); |
478 | 490 |
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572 "observe", ArrayObserve, | 584 "observe", ArrayObserve, |
573 "unobserve", ArrayUnobserve | 585 "unobserve", ArrayUnobserve |
574 )); | 586 )); |
575 InstallFunctions(notifierPrototype, DONT_ENUM, $Array( | 587 InstallFunctions(notifierPrototype, DONT_ENUM, $Array( |
576 "notify", ObjectNotifierNotify, | 588 "notify", ObjectNotifierNotify, |
577 "performChange", ObjectNotifierPerformChange | 589 "performChange", ObjectNotifierPerformChange |
578 )); | 590 )); |
579 } | 591 } |
580 | 592 |
581 SetupObjectObserve(); | 593 SetupObjectObserve(); |
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