Support WeakMap
https://bugs.webkit.org/show_bug.cgi?id=120912
Reviewed by Geoffrey Garen.
Source/JavaScriptCore:
Add support for ES6 WeakMap. Add the cluster of boilerplate
classes around the core WeakMapData class.
WeakMapData is a simple object->value hash table that uses a
combo of WeakReferenceHarvester to conditionally keep the weak
value reference live, and UnconditionalFinalizer to clean the
dead keys from the table post-GC.
- CMakeLists.txt:
- GNUmakefile.list.am:
- JavaScriptCore.vcxproj/JavaScriptCore.vcxproj:
- JavaScriptCore.vcxproj/JavaScriptCore.vcxproj.filters:
- JavaScriptCore.xcodeproj/project.pbxproj:
- Target.pri:
- runtime/CommonIdentifiers.h:
- runtime/JSGlobalObject.cpp:
- runtime/JSGlobalObject.h:
(JSC::JSGlobalObject::weakMapDataStructure):
- runtime/JSWeakMap.cpp: Added.
(JSC::JSWeakMap::finishCreation):
(JSC::JSWeakMap::visitChildren):
- runtime/JSWeakMap.h: Added.
(JSC::JSWeakMap::createStructure):
(JSC::JSWeakMap::create):
(JSC::JSWeakMap::weakMapData):
(JSC::JSWeakMap::JSWeakMap):
- runtime/WeakMapConstructor.cpp: Added.
(JSC::WeakMapConstructor::finishCreation):
(JSC::constructWeakMap):
(JSC::WeakMapConstructor::getConstructData):
(JSC::WeakMapConstructor::getCallData):
- runtime/WeakMapConstructor.h: Added.
(JSC::WeakMapConstructor::create):
(JSC::WeakMapConstructor::createStructure):
(JSC::WeakMapConstructor::WeakMapConstructor):
- runtime/WeakMapData.cpp: Added.
(JSC::WeakMapData::WeakMapData):
(JSC::WeakMapData::finishCreation):
(JSC::WeakMapData::destroy):
(JSC::WeakMapData::visitChildren):
(JSC::WeakMapData::set):
(JSC::WeakMapData::get):
(JSC::WeakMapData::remove):
(JSC::WeakMapData::contains):
(JSC::WeakMapData::clear):
(JSC::WeakMapData::DeadKeyCleaner::visitWeakReferences):
(JSC::WeakMapData::DeadKeyCleaner::finalizeUnconditionally):
- runtime/WeakMapData.h: Added.
(JSC::WeakMapData::create):
(JSC::WeakMapData::createStructure):
(JSC::WeakMapData::DeadKeyCleaner::DeadKeyCleaner):
- runtime/WeakMapPrototype.cpp: Added.
(JSC::WeakMapPrototype::finishCreation):
(JSC::getWeakMapData):
(JSC::protoFuncWeakMapClear):
(JSC::protoFuncWeakMapDelete):
(JSC::protoFuncWeakMapGet):
(JSC::protoFuncWeakMapHas):
(JSC::protoFuncWeakMapSet):
- runtime/WeakMapPrototype.h: Added.
(JSC::WeakMapPrototype::create):
(JSC::WeakMapPrototype::createStructure):
(JSC::WeakMapPrototype::WeakMapPrototype):
LayoutTests:
Basic tests.
- js/basic-weakmap-expected.txt: Added.
- js/basic-weakmap.html: Added.
- js/script-tests/basic-weakmap.js: Added.
