blob: 8e575ff22c59cca96a08f4cf0b8c7a980f06efa4 [file] [log] [blame]
/*
* Copyright (C) 2019-2020 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "CachedSpecialPropertyAdaptiveStructureWatchpoint.h"
#include "JSCellInlines.h"
#include "StructureRareData.h"
namespace JSC {
CachedSpecialPropertyAdaptiveStructureWatchpoint::CachedSpecialPropertyAdaptiveStructureWatchpoint(const ObjectPropertyCondition& key, StructureRareData* structureRareData)
: Watchpoint(Watchpoint::Type::CachedSpecialPropertyAdaptiveStructure)
, m_structureRareData(structureRareData)
, m_key(key)
{
RELEASE_ASSERT(key.watchingRequiresStructureTransitionWatchpoint());
RELEASE_ASSERT(!key.watchingRequiresReplacementWatchpoint());
}
void CachedSpecialPropertyAdaptiveStructureWatchpoint::install(VM&)
{
RELEASE_ASSERT(m_key.isWatchable(PropertyCondition::MakeNoChanges));
m_key.object()->structure()->addTransitionWatchpoint(this);
}
void CachedSpecialPropertyAdaptiveStructureWatchpoint::fireInternal(VM& vm, const FireDetail&)
{
if (!m_structureRareData->isLive())
return;
if (m_key.isWatchable(PropertyCondition::EnsureWatchability)) {
install(vm);
return;
}
CachedSpecialPropertyKey key = CachedSpecialPropertyKey::ToStringTag;
if (m_key.uid() == vm.propertyNames->toStringTagSymbol.impl())
key = CachedSpecialPropertyKey::ToStringTag;
else if (m_key.uid() == vm.propertyNames->toString.impl())
key = CachedSpecialPropertyKey::ToString;
else if (m_key.uid() == vm.propertyNames->valueOf.impl())
key = CachedSpecialPropertyKey::ValueOf;
else if (m_key.uid() == vm.propertyNames->toJSON.impl())
key = CachedSpecialPropertyKey::ToJSON;
else {
ASSERT(m_key.uid() == vm.propertyNames->toPrimitiveSymbol.impl());
key = CachedSpecialPropertyKey::ToPrimitive;
}
m_structureRareData->clearCachedSpecialProperty(key);
}
} // namespace JSC