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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef PASSOWNPTR_H
#define PASSOWNPTR_H
#include <qscopedpointer.h>
template <typename T> class PassOwnPtr;
template <typename PtrType> PassOwnPtr<PtrType> adoptPtr(PtrType*);
template <typename T>
struct OwnPtr : public QScopedPointer<T>
{
OwnPtr() {}
OwnPtr(const PassOwnPtr<T> &ptr)
: QScopedPointer<T>(ptr.leakRef())
{}
OwnPtr(const OwnPtr<T>& other)
: QScopedPointer<T>(const_cast<OwnPtr<T> &>(other).take())
{}
OwnPtr& operator=(const OwnPtr<T>& other)
{
this->reset(const_cast<OwnPtr<T> &>(other).take());
return *this;
}
T* get() const { return this->data(); }
PassOwnPtr<T> release()
{
return adoptPtr(this->take());
}
};
template <typename T>
class PassOwnPtr {
public:
PassOwnPtr() {}
PassOwnPtr(T* ptr)
: m_ptr(ptr)
{
}
PassOwnPtr(const PassOwnPtr<T>& other)
: m_ptr(other.leakRef())
{
}
PassOwnPtr(const OwnPtr<T>& other)
: m_ptr(other.take())
{
}
~PassOwnPtr()
{
}
T* operator->() const { return m_ptr.data(); }
T* leakRef() const { return m_ptr.take(); }
private:
template <typename PtrType> friend PassOwnPtr<PtrType> adoptPtr(PtrType*);
PassOwnPtr<T>& operator=(const PassOwnPtr<T>&)
{}
mutable QScopedPointer<T> m_ptr;
};
template <typename T>
PassOwnPtr<T> adoptPtr(T* ptr)
{
PassOwnPtr<T> result;
result.m_ptr.reset(ptr);
return result;
}
#endif // PASSOWNPTR_H
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