| /* |
| * Copyright (C) 2010 Google Inc. All rights reserved. |
| * Copyright (C) 2013 Intel Corporation. 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 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 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. |
| */ |
| |
| #ifndef WebPrivateOwnPtr_h |
| #define WebPrivateOwnPtr_h |
| |
| #include "WebCommon.h" |
| #include "WebNonCopyable.h" |
| |
| #if INSIDE_BLINK |
| #include "wtf/PassOwnPtr.h" |
| #endif |
| |
| namespace blink { |
| |
| // This class is an implementation detail of the WebKit API. It exists |
| // to help simplify the implementation of WebKit interfaces that merely |
| // wrap a pointer to a WebCore class. It's similar to WebPrivatePtr, but it |
| // wraps a naked pointer rather than a reference counted. |
| // Note: you must call reset(0) on the implementation side in order to delete |
| // the WebCore pointer. |
| template <typename T> |
| class WebPrivateOwnPtr : public WebNonCopyable { |
| public: |
| WebPrivateOwnPtr() : m_ptr(0) {} |
| ~WebPrivateOwnPtr() { BLINK_ASSERT(!m_ptr); } |
| |
| explicit WebPrivateOwnPtr(T* ptr) |
| : m_ptr(ptr) |
| { |
| } |
| |
| T* get() const { return m_ptr; } |
| |
| #if INSIDE_BLINK |
| template<typename U> WebPrivateOwnPtr(const PassOwnPtr<U>&, EnsurePtrConvertibleArgDecl(U, T)); |
| |
| void reset(T* ptr) |
| { |
| delete m_ptr; |
| m_ptr = ptr; |
| } |
| |
| void reset(const PassOwnPtr<T>& o) |
| { |
| reset(o.leakPtr()); |
| } |
| |
| PassOwnPtr<T> release() |
| { |
| T* ptr = m_ptr; |
| m_ptr = 0; |
| return adoptPtr(ptr); |
| } |
| |
| T* operator->() const |
| { |
| BLINK_ASSERT(m_ptr); |
| return m_ptr; |
| } |
| #endif // INSIDE_BLINK |
| |
| private: |
| T* m_ptr; |
| }; |
| |
| #if INSIDE_BLINK |
| template<typename T> template<typename U> inline WebPrivateOwnPtr<T>::WebPrivateOwnPtr(const PassOwnPtr<U>& o, EnsurePtrConvertibleArgDefn(U, T)) |
| : m_ptr(o.leakPtr()) |
| { |
| COMPILE_ASSERT(!WTF::IsArray<T>::value, Pointers_to_array_must_never_be_converted); |
| } |
| #endif |
| |
| } // namespace blink |
| |
| #endif |