mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2024-11-23 04:09:40 +00:00
132 lines
3.8 KiB
C++
132 lines
3.8 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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#include "config.h"
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#include "DeleteByIdVariant.h"
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#include "CacheableIdentifierInlines.h"
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namespace JSC {
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DeleteByIdVariant::DeleteByIdVariant(CacheableIdentifier identifier, bool result,
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Structure* oldStructure, Structure* newStructure, PropertyOffset offset)
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: m_result(result)
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, m_oldStructure(oldStructure)
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, m_newStructure(newStructure)
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, m_offset(offset)
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, m_identifier(WTFMove(identifier))
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{
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ASSERT(oldStructure);
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if (m_offset == invalidOffset)
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ASSERT(!newStructure);
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else
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ASSERT(newStructure);
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}
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DeleteByIdVariant::~DeleteByIdVariant() { }
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DeleteByIdVariant::DeleteByIdVariant(const DeleteByIdVariant& other)
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{
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*this = other;
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}
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DeleteByIdVariant& DeleteByIdVariant::operator=(const DeleteByIdVariant& other)
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{
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m_identifier = other.m_identifier;
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m_result = other.m_result;
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m_oldStructure = other.m_oldStructure;
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m_newStructure = other.m_newStructure;
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m_offset = other.m_offset;
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return *this;
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}
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bool DeleteByIdVariant::attemptToMerge(const DeleteByIdVariant& other)
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{
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if (!!m_identifier != !!other.m_identifier)
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return false;
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if (m_result != other.m_result)
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return false;
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if (m_identifier && (m_identifier != other.m_identifier))
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return false;
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if (m_offset != other.m_offset)
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return false;
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if (m_oldStructure != other.m_oldStructure)
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return false;
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ASSERT(m_newStructure == other.m_newStructure);
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return true;
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}
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bool DeleteByIdVariant::writesStructures() const
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{
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return !!newStructure();
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}
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void DeleteByIdVariant::visitAggregate(SlotVisitor& visitor)
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{
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m_identifier.visitAggregate(visitor);
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}
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void DeleteByIdVariant::markIfCheap(SlotVisitor& visitor)
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{
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if (m_oldStructure)
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m_oldStructure->markIfCheap(visitor);
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if (m_newStructure)
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m_newStructure->markIfCheap(visitor);
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}
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void DeleteByIdVariant::dump(PrintStream& out) const
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{
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dumpInContext(out, nullptr);
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}
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bool DeleteByIdVariant::finalize(VM& vm)
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{
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if (!vm.heap.isMarked(m_oldStructure))
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return false;
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if (m_newStructure && !vm.heap.isMarked(m_newStructure))
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return false;
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return true;
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}
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void DeleteByIdVariant::dumpInContext(PrintStream& out, DumpContext*) const
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{
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out.print("<");
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out.print("id='", m_identifier, "', result=", m_result);
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if (m_oldStructure)
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out.print(", ", *m_oldStructure);
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if (m_newStructure)
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out.print(" -> ", *m_newStructure);
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out.print(", offset = ", offset());
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out.print(">");
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}
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} // namespace JSC
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