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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.1, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
#ifndef QPatternist_AutoPtr_p_h
#define QPatternist_AutoPtr_p_h
#include <QtGlobal>
QT_BEGIN_NAMESPACE
namespace QPatternist
{
template<typename T>
class AutoPtrRef
{
public:
explicit AutoPtrRef(T *const other) : m_ptr(other)
{
}
T* m_ptr;
};
template<typename T>
class AutoPtr
{
public:
explicit inline AutoPtr(T *pointer = 0) : m_ptr(pointer)
{
}
inline AutoPtr(AutoPtr<T> &other) : m_ptr(other.release())
{
}
inline ~AutoPtr()
{
delete m_ptr;
}
inline T &operator*() const
{
Q_ASSERT_X(m_ptr, Q_FUNC_INFO, "");
return *m_ptr;
}
T *operator->() const
{
Q_ASSERT_X(m_ptr, Q_FUNC_INFO, "");
return m_ptr;
}
inline bool operator!() const
{
return !m_ptr;
}
inline operator bool() const
{
return m_ptr != 0;
}
AutoPtr(AutoPtrRef<T> ref) : m_ptr(ref.m_ptr)
{
}
AutoPtr& operator=(AutoPtrRef<T> ref)
{
if(ref.m_ptr != m_ptr)
{
delete m_ptr;
m_ptr = ref.m_ptr;
}
return *this;
}
#ifndef QT_NO_MEMBER_TEMPLATES
template<typename L>
operator AutoPtrRef<L>()
{
return AutoPtrRef<L>(this->release());
}
template<typename L>
operator AutoPtr<L>()
{
return AutoPtr<L>(this->release());
}
template<typename L>
inline AutoPtr(AutoPtr<L>& other) : m_ptr(other.release())
{
}
#endif
inline T *release()
{
T *const retval = m_ptr;
m_ptr = 0;
return retval;
}
inline T *data() const
{
return m_ptr;
}
void reset(T * other = 0)
{
if(other != m_ptr)
{
delete m_ptr;
m_ptr = other;
}
}
inline AutoPtr &operator=(AutoPtr &other)
{
reset(other.release());
return *this;
}
private:
T *m_ptr;
};
}
QT_END_NAMESPACE
#endif
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