80 lines
2.4 KiB
C++
80 lines
2.4 KiB
C++
/*
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* Copyright (C) 2020 Metrological Group B.V.
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* Copyright (C) 2020 Igalia S.L.
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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 <memory>
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#include <wtf/Box.h>
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namespace WTF {
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template<typename T> struct BoxPtrDeleter {
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void operator()(T*) const = delete;
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};
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#define WTF_DEFINE_BOXPTR_DELETER(typeName, deleterFunction) \
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template<> struct BoxPtrDeleter<typeName> \
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{ \
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void operator() (typeName* ptr) const \
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{ \
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deleterFunction(ptr); \
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} \
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};
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template<typename T> using BoxPtr = Box<std::unique_ptr<T, BoxPtrDeleter<T>>>;
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template<typename T> BoxPtr<T> adoptInBoxPtr(T* ptr)
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{
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return BoxPtr<T>::create(ptr);
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}
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template<typename T> bool operator==(const BoxPtr<T>& lhs, const BoxPtr<T>& rhs)
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{
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if (!lhs && !rhs)
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return true;
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if (!lhs || !rhs)
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return false;
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if (!lhs->get() && !rhs->get())
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return true;
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if (!lhs->get() || !rhs->get())
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return false;
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return *lhs == *rhs;
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}
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template<typename T> bool operator!=(const BoxPtr<T>& lhs, const BoxPtr<T>& rhs)
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{
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return !(lhs == rhs);
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}
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} // namespace WTF
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using WTF::adoptInBoxPtr;
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using WTF::BoxPtr;
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