mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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80 lines
2.8 KiB
C++
80 lines
2.8 KiB
C++
/*
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* Copyright (C) 2018 Yusuke Suzuki <utatane.tea@gmail.com>.
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* Copyright (C) 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. ``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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#pragma once
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#include "ObjectPropertyConditionSet.h"
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#include "PropertyOffset.h"
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#include "StructureSet.h"
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namespace JSC {
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namespace DOMJIT {
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class GetterSetter;
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}
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class InByIdStatus;
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struct DumpContext;
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class InByIdVariant {
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WTF_MAKE_FAST_ALLOCATED;
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public:
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InByIdVariant(const StructureSet& = StructureSet(), PropertyOffset = invalidOffset, const ObjectPropertyConditionSet& = ObjectPropertyConditionSet());
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bool isSet() const { return !!m_structureSet.size(); }
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explicit operator bool() const { return isSet(); }
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const StructureSet& structureSet() const { return m_structureSet; }
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StructureSet& structureSet() { return m_structureSet; }
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// A non-empty condition set means that this is a prototype in-hit/in-miss.
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const ObjectPropertyConditionSet& conditionSet() const { return m_conditionSet; }
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PropertyOffset offset() const { return m_offset; }
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bool isHit() const { return offset() != invalidOffset; }
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bool attemptToMerge(const InByIdVariant& other);
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void markIfCheap(SlotVisitor&);
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bool finalize(VM&);
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void dump(PrintStream&) const;
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void dumpInContext(PrintStream&, DumpContext*) const;
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bool overlaps(const InByIdVariant& other)
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{
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return structureSet().overlaps(other.structureSet());
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}
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private:
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friend class InByIdStatus;
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StructureSet m_structureSet;
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ObjectPropertyConditionSet m_conditionSet;
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PropertyOffset m_offset;
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};
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} // namespace JSC
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