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Diffstat (limited to 'WebKit/chromium/public/WebPrivateOwnPtr.h')
-rw-r--r-- | WebKit/chromium/public/WebPrivateOwnPtr.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/WebKit/chromium/public/WebPrivateOwnPtr.h b/WebKit/chromium/public/WebPrivateOwnPtr.h new file mode 100644 index 0000000..4bcabcf --- /dev/null +++ b/WebKit/chromium/public/WebPrivateOwnPtr.h @@ -0,0 +1,75 @@ +/* + * Copyright (C) 2010 Google 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 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" + +namespace WebKit { + +// 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: + WebPrivateOwnPtr() : m_ptr(0) {} + ~WebPrivateOwnPtr() { WEBKIT_ASSERT(!m_ptr); } + +#if WEBKIT_IMPLEMENTATION + explicit WebPrivateOwnPtr(T* ptr) + : m_ptr(ptr) + { + } + + void reset(T* ptr) + { + delete m_ptr; + m_ptr = ptr; + } + + T* get() const { return m_ptr; } + + T* operator->() const + { + WEBKIT_ASSERT(m_ptr); + return m_ptr; + } +#endif // WEBKIT_IMPLEMENTATION + +private: + T* m_ptr; + + WebPrivateOwnPtr(const WebPrivateOwnPtr&); + void operator=(const WebPrivateOwnPtr&); +}; + +} // namespace WebKit + +#endif |