WeakSetConstructor.cpp [plain text]
#include "config.h"
#include "WeakSetConstructor.h"
#include "IteratorOperations.h"
#include "JSCInlines.h"
#include "JSWeakSet.h"
#include "WeakSetPrototype.h"
namespace JSC {
const ClassInfo WeakSetConstructor::s_info = { "Function", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(WeakSetConstructor) };
void WeakSetConstructor::finishCreation(VM& vm, WeakSetPrototype* prototype)
{
Base::finishCreation(vm, 0, "WeakSet"_s, PropertyAdditionMode::WithoutStructureTransition);
putDirectWithoutTransition(vm, vm.propertyNames->prototype, prototype, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
}
static JSC_DECLARE_HOST_FUNCTION(callWeakSet);
static JSC_DECLARE_HOST_FUNCTION(constructWeakSet);
WeakSetConstructor::WeakSetConstructor(VM& vm, Structure* structure)
: Base(vm, structure, callWeakSet, constructWeakSet)
{
}
JSC_DEFINE_HOST_FUNCTION(callWeakSet, (JSGlobalObject* globalObject, CallFrame*))
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
return JSValue::encode(throwConstructorCannotBeCalledAsFunctionTypeError(globalObject, scope, "WeakSet"));
}
JSC_DEFINE_HOST_FUNCTION(constructWeakSet, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSObject* newTarget = asObject(callFrame->newTarget());
Structure* weakSetStructure = newTarget == callFrame->jsCallee()
? globalObject->weakSetStructure()
: InternalFunction::createSubclassStructure(globalObject, newTarget, getFunctionRealm(vm, newTarget)->weakSetStructure());
RETURN_IF_EXCEPTION(scope, { });
JSWeakSet* weakSet = JSWeakSet::create(vm, weakSetStructure);
JSValue iterable = callFrame->argument(0);
if (iterable.isUndefinedOrNull())
return JSValue::encode(weakSet);
JSValue adderFunction = weakSet->JSObject::get(globalObject, vm.propertyNames->add);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
auto adderFunctionCallData = getCallData(vm, adderFunction);
if (adderFunctionCallData.type == CallData::Type::None)
return JSValue::encode(throwTypeError(globalObject, scope));
scope.release();
forEachInIterable(globalObject, iterable, [&](VM&, JSGlobalObject* globalObject, JSValue nextValue) {
MarkedArgumentBuffer arguments;
arguments.append(nextValue);
ASSERT(!arguments.hasOverflowed());
call(globalObject, adderFunction, adderFunctionCallData, weakSet, arguments);
});
return JSValue::encode(weakSet);
}
}