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author | Lorry Tar Creator <lorry-tar-importer@lorry> | 2016-05-24 08:28:08 +0000 |
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committer | Lorry Tar Creator <lorry-tar-importer@lorry> | 2016-05-24 08:28:08 +0000 |
commit | a4e969f4965059196ca948db781e52f7cfebf19e (patch) | |
tree | 6ca352808c8fdc52006a0f33f6ae3c593b23867d /Source/JavaScriptCore/runtime/WeakMapConstructor.cpp | |
parent | 41386e9cb918eed93b3f13648cbef387e371e451 (diff) | |
download | WebKitGtk-tarball-a4e969f4965059196ca948db781e52f7cfebf19e.tar.gz |
webkitgtk-2.12.3webkitgtk-2.12.3
Diffstat (limited to 'Source/JavaScriptCore/runtime/WeakMapConstructor.cpp')
-rw-r--r-- | Source/JavaScriptCore/runtime/WeakMapConstructor.cpp | 90 |
1 files changed, 85 insertions, 5 deletions
diff --git a/Source/JavaScriptCore/runtime/WeakMapConstructor.cpp b/Source/JavaScriptCore/runtime/WeakMapConstructor.cpp index f3540faaa..d60f3fdd5 100644 --- a/Source/JavaScriptCore/runtime/WeakMapConstructor.cpp +++ b/Source/JavaScriptCore/runtime/WeakMapConstructor.cpp @@ -26,15 +26,18 @@ #include "config.h" #include "WeakMapConstructor.h" +#include "Error.h" +#include "IteratorOperations.h" #include "JSCJSValueInlines.h" #include "JSCellInlines.h" #include "JSGlobalObject.h" #include "JSWeakMap.h" +#include "StructureInlines.h" #include "WeakMapPrototype.h" namespace JSC { -const ClassInfo WeakMapConstructor::s_info = { "Function", &Base::s_info, 0, 0, CREATE_METHOD_TABLE(WeakMapConstructor) }; +const ClassInfo WeakMapConstructor::s_info = { "Function", &Base::s_info, 0, CREATE_METHOD_TABLE(WeakMapConstructor) }; void WeakMapConstructor::finishCreation(VM& vm, WeakMapPrototype* prototype) { @@ -43,11 +46,87 @@ void WeakMapConstructor::finishCreation(VM& vm, WeakMapPrototype* prototype) putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(0), ReadOnly | DontEnum | DontDelete); } +static EncodedJSValue JSC_HOST_CALL callWeakMap(ExecState* exec) +{ + return JSValue::encode(throwConstructorCannotBeCalledAsFunctionTypeError(exec, "WeakMap")); +} + static EncodedJSValue JSC_HOST_CALL constructWeakMap(ExecState* exec) { JSGlobalObject* globalObject = asInternalFunction(exec->callee())->globalObject(); - Structure* structure = globalObject->weakMapStructure(); - return JSValue::encode(JSWeakMap::create(exec, structure)); + Structure* weakMapStructure = InternalFunction::createSubclassStructure(exec, exec->newTarget(), globalObject->weakMapStructure()); + JSWeakMap* weakMap = JSWeakMap::create(exec, weakMapStructure); + JSValue iterable = exec->argument(0); + if (iterable.isUndefinedOrNull()) + return JSValue::encode(weakMap); + + JSValue adderFunction = weakMap->JSObject::get(exec, exec->propertyNames().set); + if (exec->hadException()) + return JSValue::encode(jsUndefined()); + + CallData adderFunctionCallData; + CallType adderFunctionCallType = getCallData(adderFunction, adderFunctionCallData); + if (adderFunctionCallType == CallTypeNone) + return JSValue::encode(throwTypeError(exec)); + + JSValue iteratorFunction = iterable.get(exec, exec->propertyNames().iteratorSymbol); + if (exec->hadException()) + return JSValue::encode(jsUndefined()); + + CallData iteratorFunctionCallData; + CallType iteratorFunctionCallType = getCallData(iteratorFunction, iteratorFunctionCallData); + if (iteratorFunctionCallType == CallTypeNone) + return JSValue::encode(throwTypeError(exec)); + + ArgList iteratorFunctionArguments; + JSValue iterator = call(exec, iteratorFunction, iteratorFunctionCallType, iteratorFunctionCallData, iterable, iteratorFunctionArguments); + if (exec->hadException()) + return JSValue::encode(jsUndefined()); + + if (!iterator.isObject()) + return JSValue::encode(throwTypeError(exec)); + + while (true) { + JSValue next = iteratorStep(exec, iterator); + if (exec->hadException()) + return JSValue::encode(jsUndefined()); + + if (next.isFalse()) + return JSValue::encode(weakMap); + + JSValue nextItem = iteratorValue(exec, next); + if (exec->hadException()) + return JSValue::encode(jsUndefined()); + + if (!nextItem.isObject()) { + throwTypeError(exec); + iteratorClose(exec, iterator); + return JSValue::encode(jsUndefined()); + } + + JSValue key = nextItem.get(exec, 0); + if (exec->hadException()) { + iteratorClose(exec, iterator); + return JSValue::encode(jsUndefined()); + } + + JSValue value = nextItem.get(exec, 1); + if (exec->hadException()) { + iteratorClose(exec, iterator); + return JSValue::encode(jsUndefined()); + } + + MarkedArgumentBuffer arguments; + arguments.append(key); + arguments.append(value); + call(exec, adderFunction, adderFunctionCallType, adderFunctionCallData, weakMap, arguments); + if (exec->hadException()) { + iteratorClose(exec, iterator); + return JSValue::encode(jsUndefined()); + } + } + RELEASE_ASSERT_NOT_REACHED(); + return JSValue::encode(weakMap); } ConstructType WeakMapConstructor::getConstructData(JSCell*, ConstructData& constructData) @@ -56,9 +135,10 @@ ConstructType WeakMapConstructor::getConstructData(JSCell*, ConstructData& const return ConstructTypeHost; } -CallType WeakMapConstructor::getCallData(JSCell*, CallData&) +CallType WeakMapConstructor::getCallData(JSCell*, CallData& callData) { - return CallTypeNone; + callData.native.function = callWeakMap; + return CallTypeHost; } } |