/*
* 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