diff options
Diffstat (limited to 'Source/WTF/wtf/PassRef.h')
-rw-r--r-- | Source/WTF/wtf/PassRef.h | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/Source/WTF/wtf/PassRef.h b/Source/WTF/wtf/PassRef.h deleted file mode 100644 index 587374c6c..000000000 --- a/Source/WTF/wtf/PassRef.h +++ /dev/null @@ -1,162 +0,0 @@ -/* - * Copyright (C) 2013 Apple Inc. All rights reserved. - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public License - * along with this library; see the file COPYING.LIB. If not, write to - * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - * Boston, MA 02110-1301, USA. - * - */ - -#ifndef WTF_PassRef_h -#define WTF_PassRef_h - -#include "Assertions.h" -#include <cstddef> -#include <utility> - -namespace WTF { - -template<typename T> class PassRef; -template<typename T> class PassRefPtr; -template<typename T> class Ref; -template<typename T> class RefPtr; - -template<typename T> PassRef<T> adoptRef(T&); - -inline void adopted(const void*) { } - -template<typename T> class PassRef { -public: - PassRef(T&); - PassRef(PassRef&&); - template<typename U> PassRef(PassRef<U>); - - const T& get() const; - T& get(); - - void dropRef(); - T& leakRef() WARN_UNUSED_RETURN; - -#ifndef NDEBUG - ~PassRef(); -#endif - -private: - friend PassRef adoptRef<T>(T&); - - template<typename U> friend class PassRef; - template<typename U> friend class PassRefPtr; - template<typename U> friend class Ref; - template<typename U> friend class RefPtr; - - enum AdoptTag { Adopt }; - PassRef(T&, AdoptTag); - - T& m_reference; - -#ifndef NDEBUG - bool m_gaveUpReference; -#endif -}; - -template<typename T> inline PassRef<T>::PassRef(T& reference) - : m_reference(reference) -#ifndef NDEBUG - , m_gaveUpReference(false) -#endif -{ - reference.ref(); -} - -template<typename T> inline PassRef<T>::PassRef(PassRef&& other) - : m_reference(other.leakRef()) -#ifndef NDEBUG - , m_gaveUpReference(false) -#endif -{ -} - -template<typename T> template<typename U> inline PassRef<T>::PassRef(PassRef<U> other) - : m_reference(other.leakRef()) -#ifndef NDEBUG - , m_gaveUpReference(false) -#endif -{ -} - -#ifndef NDEBUG - -template<typename T> PassRef<T>::~PassRef() -{ - ASSERT(m_gaveUpReference); -} - -#endif - -template<typename T> inline void PassRef<T>::dropRef() -{ - ASSERT(!m_gaveUpReference); - m_reference.deref(); -#ifndef NDEBUG - m_gaveUpReference = true; -#endif -} - -template<typename T> inline const T& PassRef<T>::get() const -{ - ASSERT(!m_gaveUpReference); - return m_reference; -} - -template<typename T> inline T& PassRef<T>::get() -{ - ASSERT(!m_gaveUpReference); - return m_reference; -} - -template<typename T> inline T& PassRef<T>::leakRef() -{ -#ifndef NDEBUG - ASSERT(!m_gaveUpReference); - m_gaveUpReference = true; -#endif - return m_reference; -} - -template<typename T> inline PassRef<T>::PassRef(T& reference, AdoptTag) - : m_reference(reference) -#ifndef NDEBUG - , m_gaveUpReference(false) -#endif -{ -} - -template<typename T> inline PassRef<T> adoptRef(T& reference) -{ - adopted(&reference); - return PassRef<T>(reference, PassRef<T>::Adopt); -} - -template<typename T, typename... Args> inline PassRef<T> createRefCounted(Args&&... args) -{ - return adoptRef(*new T(std::forward<Args>(args)...)); -} - -} // namespace WTF - -using WTF::PassRef; -using WTF::adoptRef; -using WTF::createRefCounted; - -#endif // WTF_PassRef_h |