/*
 * 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->isPendingDestruction())
        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
