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122 lines
3.9 KiB
C++
122 lines
3.9 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the QtCore module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QPOINTER_H
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#define QPOINTER_H
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#include <QtCore/qsharedpointer.h>
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QT_BEGIN_HEADER
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QT_BEGIN_NAMESPACE
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template <class T>
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class QPointer
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{
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QWeakPointer<T> wp;
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public:
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inline QPointer() : wp() { }
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inline QPointer(T *p) : wp(p) { }
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inline QPointer(const QPointer<T> &p) : wp(p.wp) { }
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inline QPointer<T> &operator=(const QPointer<T> &p)
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{ wp = p.wp; return *this; }
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inline QPointer<T> &operator=(T* p)
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{ wp = p; return *this; }
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inline bool isNull() const
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{ return wp.isNull(); }
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inline T* operator->() const
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{ return wp.data(); }
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inline T& operator*() const
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{ return *wp.data(); }
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inline operator T*() const
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{ return wp.data(); }
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inline T* data() const
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{ return wp.data(); }
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};
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template <class T>
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inline bool operator==(const T *o, const QPointer<T> &p)
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{ return o == p.operator->(); }
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template<class T>
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inline bool operator==(const QPointer<T> &p, const T *o)
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{ return p.operator->() == o; }
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template <class T>
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inline bool operator==(T *o, const QPointer<T> &p)
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{ return o == p.operator->(); }
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template<class T>
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inline bool operator==(const QPointer<T> &p, T *o)
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{ return p.operator->() == o; }
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template<class T>
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inline bool operator==(const QPointer<T> &p1, const QPointer<T> &p2)
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{ return p1.operator->() == p2.operator->(); }
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template <class T>
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inline bool operator!=(const T *o, const QPointer<T> &p)
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{ return o != p.operator->(); }
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template<class T>
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inline bool operator!= (const QPointer<T> &p, const T *o)
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{ return p.operator->() != o; }
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template <class T>
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inline bool operator!=(T *o, const QPointer<T> &p)
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{ return o != p.operator->(); }
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template<class T>
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inline bool operator!= (const QPointer<T> &p, T *o)
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{ return p.operator->() != o; }
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template<class T>
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inline bool operator!= (const QPointer<T> &p1, const QPointer<T> &p2)
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{ return p1.operator->() != p2.operator->() ; }
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QT_END_NAMESPACE
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QT_END_HEADER
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#endif // QPOINTER_H
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