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Diffstat (limited to 'Source/JavaScriptCore/wtf/PassOwnArrayPtr.h')
| -rw-r--r-- | Source/JavaScriptCore/wtf/PassOwnArrayPtr.h | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/Source/JavaScriptCore/wtf/PassOwnArrayPtr.h b/Source/JavaScriptCore/wtf/PassOwnArrayPtr.h deleted file mode 100644 index 1db7343de..000000000 --- a/Source/JavaScriptCore/wtf/PassOwnArrayPtr.h +++ /dev/null @@ -1,169 +0,0 @@ -/* - * Copyright (C) 2010 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. - */ - -#ifndef WTF_PassOwnArrayPtr_h -#define WTF_PassOwnArrayPtr_h - -#include <wtf/Assertions.h> -#include <wtf/NullPtr.h> -#include <wtf/TypeTraits.h> - -namespace WTF { - -template<typename T> class OwnArrayPtr; -template<typename T> class PassOwnArrayPtr; -template<typename T> PassOwnArrayPtr<T> adoptArrayPtr(T*); -template<typename T> void deleteOwnedArrayPtr(T* ptr); - -template<typename T> class PassOwnArrayPtr { -public: - typedef T* PtrType; - - PassOwnArrayPtr() : m_ptr(0) { } - PassOwnArrayPtr(std::nullptr_t) : m_ptr(0) { } - - // It somewhat breaks the type system to allow transfer of ownership out of - // a const PassOwnArrayPtr. However, it makes it much easier to work with PassOwnArrayPtr - // temporaries, and we don't have a need to use real const PassOwnArrayPtrs anyway. - PassOwnArrayPtr(const PassOwnArrayPtr& o) : m_ptr(o.leakPtr()) { } - template<typename U> PassOwnArrayPtr(const PassOwnArrayPtr<U>& o) : m_ptr(o.leakPtr()) { } - - ~PassOwnArrayPtr() { deleteOwnedArrayPtr(m_ptr); } - - PtrType get() const { return m_ptr; } - - PtrType leakPtr() const WARN_UNUSED_RETURN; - - T& operator*() const { ASSERT(m_ptr); return *m_ptr; } - PtrType operator->() const { ASSERT(m_ptr); return m_ptr; } - - bool operator!() const { return !m_ptr; } - - // This conversion operator allows implicit conversion to bool but not to other integer types. - typedef PtrType PassOwnArrayPtr::*UnspecifiedBoolType; - operator UnspecifiedBoolType() const { return m_ptr ? &PassOwnArrayPtr::m_ptr : 0; } - - PassOwnArrayPtr& operator=(const PassOwnArrayPtr&) { COMPILE_ASSERT(!sizeof(T*), PassOwnArrayPtr_should_never_be_assigned_to); return *this; } - - template<typename U> friend PassOwnArrayPtr<U> adoptArrayPtr(U*); - -private: - explicit PassOwnArrayPtr(PtrType ptr) : m_ptr(ptr) { } - - mutable PtrType m_ptr; -}; - -template<typename T> inline typename PassOwnArrayPtr<T>::PtrType PassOwnArrayPtr<T>::leakPtr() const -{ - PtrType ptr = m_ptr; - m_ptr = 0; - return ptr; -} - -template<typename T, typename U> inline bool operator==(const PassOwnArrayPtr<T>& a, const PassOwnArrayPtr<U>& b) -{ - return a.get() == b.get(); -} - -template<typename T, typename U> inline bool operator==(const PassOwnArrayPtr<T>& a, const OwnArrayPtr<U>& b) -{ - return a.get() == b.get(); -} - -template<typename T, typename U> inline bool operator==(const OwnArrayPtr<T>& a, const PassOwnArrayPtr<U>& b) -{ - return a.get() == b.get(); -} - -template<typename T, typename U> inline bool operator==(const PassOwnArrayPtr<T>& a, U* b) -{ - return a.get() == b; -} - -template<typename T, typename U> inline bool operator==(T* a, const PassOwnArrayPtr<U>& b) -{ - return a == b.get(); -} - -template<typename T, typename U> inline bool operator!=(const PassOwnArrayPtr<T>& a, const PassOwnArrayPtr<U>& b) -{ - return a.get() != b.get(); -} - -template<typename T, typename U> inline bool operator!=(const PassOwnArrayPtr<T>& a, const OwnArrayPtr<U>& b) -{ - return a.get() != b.get(); -} - -template<typename T, typename U> inline bool operator!=(const OwnArrayPtr<T>& a, const PassOwnArrayPtr<U>& b) -{ - return a.get() != b.get(); -} - -template<typename T, typename U> inline bool operator!=(const PassOwnArrayPtr<T>& a, U* b) -{ - return a.get() != b; -} - -template<typename T, typename U> inline bool operator!=(T* a, const PassOwnArrayPtr<U>& b) -{ - return a != b.get(); -} - -template<typename T> inline PassOwnArrayPtr<T> adoptArrayPtr(T* ptr) -{ - return PassOwnArrayPtr<T>(ptr); -} - -template<typename T> inline void deleteOwnedArrayPtr(T* ptr) -{ - typedef char known[sizeof(T) ? 1 : -1]; - if (sizeof(known)) - delete [] ptr; -} - -template<typename T, typename U> inline PassOwnArrayPtr<T> static_pointer_cast(const PassOwnArrayPtr<U>& p) -{ - return adoptArrayPtr(static_cast<T*>(p.leakPtr())); -} - -template<typename T, typename U> inline PassOwnArrayPtr<T> const_pointer_cast(const PassOwnArrayPtr<U>& p) -{ - return adoptArrayPtr(const_cast<T*>(p.leakPtr())); -} - -template<typename T> inline T* getPtr(const PassOwnArrayPtr<T>& p) -{ - return p.get(); -} - -} // namespace WTF - -using WTF::PassOwnArrayPtr; -using WTF::adoptArrayPtr; -using WTF::const_pointer_cast; -using WTF::static_pointer_cast; - -#endif // WTF_PassOwnArrayPtr_h |