static EncodedJSValue JSC_HOST_CALL constructWeakSet(ExecState* exec)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSGlobalObject* globalObject = asInternalFunction(exec->jsCallee())->globalObject();
Structure* weakSetStructure = InternalFunction::createSubclassStructure(exec, exec->newTarget(), globalObject->weakSetStructure());
RETURN_IF_EXCEPTION(scope, encodedJSValue());
JSWeakSet* weakSet = JSWeakSet::create(exec, weakSetStructure);
JSValue iterable = exec->argument(0);
if (iterable.isUndefinedOrNull())
return JSValue::encode(weakSet);
JSValue adderFunction = weakSet->JSObject::get(exec, vm.propertyNames->add);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
CallData adderFunctionCallData;
CallType adderFunctionCallType = getCallData(adderFunction, adderFunctionCallData);
if (adderFunctionCallType == CallType::None)
return JSValue::encode(throwTypeError(exec, scope));
scope.release();
forEachInIterable(exec, iterable, [&](VM&, ExecState* exec, JSValue nextValue) {
MarkedArgumentBuffer arguments;
arguments.append(nextValue);
call(exec, adderFunction, adderFunctionCallType, adderFunctionCallData, weakSet, arguments);
});
return JSValue::encode(weakSet);
}
static EncodedJSValue JSC_HOST_CALL constructWeakMap(ExecState* exec)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSGlobalObject* globalObject = asInternalFunction(exec->callee())->globalObject();
Structure* weakMapStructure = InternalFunction::createSubclassStructure(exec, exec->newTarget(), globalObject->weakMapStructure());
if (exec->hadException())
return JSValue::encode(JSValue());
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 == CallType::None)
return JSValue::encode(throwTypeError(exec, scope));
forEachInIterable(exec, iterable, [&](VM& vm, ExecState* exec, JSValue nextItem) {
if (!nextItem.isObject()) {
throwTypeError(exec, scope);
return;
}
JSValue key = nextItem.get(exec, static_cast<unsigned>(0));
if (vm.exception())
return;
JSValue value = nextItem.get(exec, static_cast<unsigned>(1));
if (vm.exception())
return;
MarkedArgumentBuffer arguments;
arguments.append(key);
arguments.append(value);
call(exec, adderFunction, adderFunctionCallType, adderFunctionCallData, weakMap, arguments);
});
return JSValue::encode(weakMap);
}
