mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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83 lines
2.9 KiB
C++
83 lines
2.9 KiB
C++
/*
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* Copyright (C) 2013, 2016 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. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "JSSet.h"
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#include "JSCInlines.h"
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namespace JSC {
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const ClassInfo JSSet::s_info = { "Set", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSSet) };
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JSSet* JSSet::clone(JSGlobalObject* globalObject, VM& vm, Structure* structure)
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{
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JSSet* instance = new (NotNull, allocateCell<JSSet>(vm.heap)) JSSet(vm, structure);
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instance->finishCreation(globalObject, vm, this);
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return instance;
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}
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bool JSSet::isIteratorProtocolFastAndNonObservable()
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{
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JSGlobalObject* globalObject = this->globalObject();
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if (!globalObject->isSetPrototypeIteratorProtocolFastAndNonObservable())
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return false;
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VM& vm = globalObject->vm();
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Structure* structure = this->structure(vm);
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// This is the fast case. Many sets will be an original set.
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if (structure == globalObject->setStructure())
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return true;
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if (getPrototypeDirect(vm) != globalObject->jsSetPrototype())
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return false;
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if (getDirectOffset(vm, vm.propertyNames->iteratorSymbol) != invalidOffset)
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return false;
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return true;
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}
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bool JSSet::canCloneFastAndNonObservable(Structure* structure)
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{
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auto addFastAndNonObservable = [&] (Structure* structure) {
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JSGlobalObject* globalObject = structure->globalObject();
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if (!globalObject->isSetPrototypeAddFastAndNonObservable())
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return false;
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if (structure->hasPolyProto())
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return false;
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if (structure->storedPrototype() != globalObject->jsSetPrototype())
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return false;
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return true;
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};
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return isIteratorProtocolFastAndNonObservable() && addFastAndNonObservable(structure);
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}
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}
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