katie/src/core/kernel/qpointer.h
Ivailo Monev 90f338a0a0 remove QDataStream forward declaration from global header
Signed-off-by: Ivailo Monev <xakepa10@laimg.moc>
2016-09-13 20:13:53 +00:00

122 lines
3.9 KiB
C++

/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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.
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** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
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****************************************************************************/
#ifndef QPOINTER_H
#define QPOINTER_H
#include <QtCore/qsharedpointer.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
template <class T>
class QPointer
{
QWeakPointer<T> wp;
public:
inline QPointer() : wp() { }
inline QPointer(T *p) : wp(p) { }
inline QPointer(const QPointer<T> &p) : wp(p.wp) { }
inline QPointer<T> &operator=(const QPointer<T> &p)
{ wp = p.wp; return *this; }
inline QPointer<T> &operator=(T* p)
{ wp = p; return *this; }
inline bool isNull() const
{ return wp.isNull(); }
inline T* operator->() const
{ return wp.data(); }
inline T& operator*() const
{ return *wp.data(); }
inline operator T*() const
{ return wp.data(); }
inline T* data() const
{ return wp.data(); }
};
template <class T>
inline bool operator==(const T *o, const QPointer<T> &p)
{ return o == p.operator->(); }
template<class T>
inline bool operator==(const QPointer<T> &p, const T *o)
{ return p.operator->() == o; }
template <class T>
inline bool operator==(T *o, const QPointer<T> &p)
{ return o == p.operator->(); }
template<class T>
inline bool operator==(const QPointer<T> &p, T *o)
{ return p.operator->() == o; }
template<class T>
inline bool operator==(const QPointer<T> &p1, const QPointer<T> &p2)
{ return p1.operator->() == p2.operator->(); }
template <class T>
inline bool operator!=(const T *o, const QPointer<T> &p)
{ return o != p.operator->(); }
template<class T>
inline bool operator!= (const QPointer<T> &p, const T *o)
{ return p.operator->() != o; }
template <class T>
inline bool operator!=(T *o, const QPointer<T> &p)
{ return o != p.operator->(); }
template<class T>
inline bool operator!= (const QPointer<T> &p, T *o)
{ return p.operator->() != o; }
template<class T>
inline bool operator!= (const QPointer<T> &p1, const QPointer<T> &p2)
{ return p1.operator->() != p2.operator->() ; }
QT_END_NAMESPACE
QT_END_HEADER
#endif // QPOINTER_H