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/*
* Copyright (C) 2015-2017 Apple, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "WeakSetConstructor.h"
#include "IteratorOperations.h"
#include "JSCInlines.h"
#include "JSWeakSet.h"
#include "WeakMapImplInlines.h"
#include "WeakSetPrototype.h"
namespace JSC {
const ClassInfo WeakSetConstructor::s_info = { "Function"_s, &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"_s));
}
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 = JSC_GET_DERIVED_STRUCTURE(vm, weakSetStructure, newTarget, callFrame->jsCallee());
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 = JSC::getCallData(adderFunction);
if (adderFunctionCallData.type == CallData::Type::None)
return throwVMTypeError(globalObject, scope, "'add' property of a WeakSet should be callable."_s);
bool canPerformFastAdd = adderFunctionCallData.type == CallData::Type::Native && adderFunctionCallData.native.function == protoFuncWeakSetAdd;
scope.release();
forEachInIterable(globalObject, iterable, [&](VM&, JSGlobalObject* globalObject, JSValue nextValue) {
if (canPerformFastAdd) {
if (UNLIKELY(!canBeHeldWeakly(nextValue))) {
throwTypeError(asObject(adderFunction)->globalObject(), scope, WeakSetInvalidValueError);
return;
}
weakSet->add(vm, nextValue.asCell());
return;
}
MarkedArgumentBuffer arguments;
arguments.append(nextValue);
ASSERT(!arguments.hasOverflowed());
call(globalObject, adderFunction, adderFunctionCallData, weakSet, arguments);
});
return JSValue::encode(weakSet);
}
}
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