mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2024-12-04 18:16:39 +00:00
104 lines
4.4 KiB
C++
104 lines
4.4 KiB
C++
/*
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* Copyright (C) 2014-2018 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "JSPropertyNameEnumerator.h"
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#include "JSCInlines.h"
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#include "LockDuringMarking.h"
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#include "StrongInlines.h"
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namespace JSC {
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const ClassInfo JSPropertyNameEnumerator::s_info = { "JSPropertyNameEnumerator", nullptr, nullptr, nullptr, CREATE_METHOD_TABLE(JSPropertyNameEnumerator) };
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JSPropertyNameEnumerator* JSPropertyNameEnumerator::create(VM& vm)
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{
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if (!vm.emptyPropertyNameEnumerator.get()) {
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PropertyNameArray propertyNames(&vm, PropertyNameMode::Strings, PrivateSymbolMode::Exclude);
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vm.emptyPropertyNameEnumerator = Strong<JSCell>(vm, create(vm, 0, 0, 0, WTFMove(propertyNames)));
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}
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return jsCast<JSPropertyNameEnumerator*>(vm.emptyPropertyNameEnumerator.get());
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}
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JSPropertyNameEnumerator* JSPropertyNameEnumerator::create(VM& vm, Structure* structure, uint32_t indexedLength, uint32_t numberStructureProperties, PropertyNameArray&& propertyNames)
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{
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StructureID structureID = structure ? structure->id() : 0;
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uint32_t inlineCapacity = structure ? structure->inlineCapacity() : 0;
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JSPropertyNameEnumerator* enumerator = new (NotNull,
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allocateCell<JSPropertyNameEnumerator>(vm.heap)) JSPropertyNameEnumerator(vm, structureID, inlineCapacity);
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enumerator->finishCreation(vm, indexedLength, numberStructureProperties, propertyNames.releaseData());
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return enumerator;
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}
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JSPropertyNameEnumerator::JSPropertyNameEnumerator(VM& vm, StructureID structureID, uint32_t inlineCapacity)
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: JSCell(vm, vm.propertyNameEnumeratorStructure.get())
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, m_cachedStructureID(structureID)
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, m_cachedInlineCapacity(inlineCapacity)
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{
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}
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void JSPropertyNameEnumerator::finishCreation(VM& vm, uint32_t indexedLength, uint32_t endStructurePropertyIndex, RefPtr<PropertyNameArrayData>&& identifiers)
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{
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Base::finishCreation(vm);
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PropertyNameArrayData::PropertyNameVector& vector = identifiers->propertyNameVector();
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m_indexedLength = indexedLength;
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m_endStructurePropertyIndex = endStructurePropertyIndex;
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m_endGenericPropertyIndex = vector.size();
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{
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auto locker = lockDuringMarking(vm.heap, cellLock());
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m_propertyNames.resizeToFit(vector.size());
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}
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for (unsigned i = 0; i < vector.size(); ++i) {
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const Identifier& identifier = vector[i];
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m_propertyNames[i].set(vm, this, jsString(&vm, identifier.string()));
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}
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}
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void JSPropertyNameEnumerator::destroy(JSCell* cell)
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{
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static_cast<JSPropertyNameEnumerator*>(cell)->JSPropertyNameEnumerator::~JSPropertyNameEnumerator();
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}
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void JSPropertyNameEnumerator::visitChildren(JSCell* cell, SlotVisitor& visitor)
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{
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Base::visitChildren(cell, visitor);
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JSPropertyNameEnumerator* thisObject = jsCast<JSPropertyNameEnumerator*>(cell);
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auto locker = holdLock(thisObject->cellLock());
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for (auto& propertyName : thisObject->m_propertyNames)
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visitor.append(propertyName);
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visitor.append(thisObject->m_prototypeChain);
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if (thisObject->cachedStructureID()) {
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VM& vm = visitor.vm();
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visitor.appendUnbarriered(vm.getStructure(thisObject->cachedStructureID()));
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}
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}
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} // namespace JSC
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