/* * Copyright (C) 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. ``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 * 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. */ #pragma once #include <wtf/CompactPointerTuple.h> #include <wtf/Noncopyable.h> #include <wtf/RefPtr.h> namespace WTF { template<typename T, typename Type> class CompactRefPtrTuple final { WTF_MAKE_FAST_ALLOCATED; WTF_MAKE_NONCOPYABLE(CompactRefPtrTuple); public: CompactRefPtrTuple() = default; ~CompactRefPtrTuple() { WTF::DefaultRefDerefTraits<T>::derefIfNotNull(m_data.pointer()); } T* pointer() const { return m_data.pointer(); } void setPointer(T* pointer) { WTF::DefaultRefDerefTraits<T>::refIfNotNull(pointer); auto* old = m_data.pointer(); m_data.setPointer(pointer); WTF::DefaultRefDerefTraits<T>::derefIfNotNull(old); } Type type() const { return m_data.type(); } void setType(Type type) { m_data.setType(type); } private: CompactPointerTuple<T*, Type> m_data; }; } // namespace WTF using WTF::CompactRefPtrTuple;