mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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95 lines
3.1 KiB
C++
95 lines
3.1 KiB
C++
/*
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* Copyright (C) 2020 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 "CacheableIdentifier.h"
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#include "CallLinkStatus.h"
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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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#include <wtf/Box.h>
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namespace JSC {
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class CallLinkStatus;
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class DeleteByStatus;
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struct DumpContext;
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class DeleteByIdVariant {
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WTF_MAKE_FAST_ALLOCATED;
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public:
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DeleteByIdVariant(
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CacheableIdentifier, bool result,
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Structure* oldStrucutre, Structure* newStructure, PropertyOffset);
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~DeleteByIdVariant();
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DeleteByIdVariant(const DeleteByIdVariant&);
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DeleteByIdVariant& operator=(const DeleteByIdVariant&);
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Structure* oldStructure() const { return m_oldStructure; }
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Structure* newStructure() const { return m_newStructure; }
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bool result() const { return m_result; }
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bool writesStructures() const;
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PropertyOffset offset() const { return m_offset; }
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bool isPropertyUnset() const { return offset() == invalidOffset; }
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bool attemptToMerge(const DeleteByIdVariant& other);
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void visitAggregate(SlotVisitor&);
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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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CacheableIdentifier identifier() const { return m_identifier; }
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bool overlaps(const DeleteByIdVariant& other)
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{
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if (!!m_identifier != !!other.m_identifier)
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return true;
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if (m_identifier) {
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if (m_identifier != other.m_identifier)
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return false;
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}
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return m_oldStructure == other.m_oldStructure;
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}
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private:
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friend class DeleteByStatus;
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bool m_result;
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Structure* m_oldStructure;
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Structure* m_newStructure;
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PropertyOffset m_offset;
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CacheableIdentifier m_identifier;
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};
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} // namespace JSC
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