1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the QtCore module of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    27 **

    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

    31 **

    32 **

    33 **

    34 **

    35 **

    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #ifndef QSHAREDPOINTER_H

    43 #define QSHAREDPOINTER_H

    44 

    45 #include <QtCore/qglobal.h>

    46 #include <QtCore/qatomic.h>

    47 #include <QtCore/qshareddata.h>

    48 

    49 #ifndef Q_QDOC

    50 # if !defined(QT_NO_MEMBER_TEMPLATES)

    51 // QSharedPointer requires member template support

    52 # include <QtCore/qsharedpointer_impl.h>

    53 # endif

    54 #else

    55 

    56 QT_BEGIN_HEADER

    57 

    58 QT_BEGIN_NAMESPACE

    59 

    60 QT_MODULE(Core)

    61 

    62 // These classes are here to fool qdoc into generating a better documentation

    63 

    64 template <class T>

    65 class QSharedPointer

    66 {

    67 public:

    68     // basic accessor functions

    69     T *data() const;

    70     bool isNull() const;

    71     operator bool() const;

    72     bool operator!() const;

    73     T &operator*() const;

    74     T *operator ->() const;

    75 

    76     // constructors

    77     QSharedPointer();

    78     explicit QSharedPointer(T *ptr);

    79     QSharedPointer(T *ptr, Deleter d);

    80     QSharedPointer(const QSharedPointer<T> &other);

    81     QSharedPointer(const QWeakPointer<T> &other);

    82 

    83     ~QSharedPointer() { }

    84 

    85     QSharedPointer<T> &operator=(const QSharedPointer<T> &other);

    86     QSharedPointer<T> &operator=(const QWeakPointer<T> &other);

    87 

    88     QWeakPointer<T> toWeakRef() const;

    89 

    90     void clear();

    91 

    92     // casts:

    93     template <class X> QSharedPointer<X> staticCast() const;

    94     template <class X> QSharedPointer<X> dynamicCast() const;

    95     template <class X> QSharedPointer<X> constCast() const;

    96     template <class X> QSharedPointer<X> objectCast() const;

    97 };

    98 

    99 template <class T>

   100 class QWeakPointer

   101 {

   102 public:

   103     // basic accessor functions

   104     bool isNull() const;

   105     operator bool() const;

   106     bool operator!() const;

   107 

   108     // constructors:

   109     QWeakPointer();

   110     QWeakPointer(const QWeakPointer<T> &other);

   111     QWeakPointer(const QSharedPointer<T> &other);

   112 

   113     ~QWeakPointer();

   114 

   115     QWeakPointer<T> operator=(const QWeakPointer<T> &other);

   116     QWeakPointer<T> operator=(const QSharedPointer<T> &other);

   117 

   118     QWeakPointer(const QObject *other);

   119     QWeakPointer<T> operator=(const QObject *other);

   120 

   121     T *data() const;

   122     void clear();

   123 

   124     QSharedPointer<T> toStrongRef() const;

   125 };

   126 

   127 template<class T, class X> bool operator==(const QSharedPointer<T> &ptr1, const QSharedPointer<X> &ptr2);

   128 template<class T, class X> bool operator!=(const QSharedPointer<T> &ptr1, const QSharedPointer<X> &ptr2);

   129 template<class T, class X> bool operator==(const QSharedPointer<T> &ptr1, const X *ptr2);

   130 template<class T, class X> bool operator!=(const QSharedPointer<T> &ptr1, const X *ptr2);

   131 template<class T, class X> bool operator==(const T *ptr1, const QSharedPointer<X> &ptr2);

   132 template<class T, class X> bool operator!=(const T *ptr1, const QSharedPointer<X> &ptr2);

   133 template<class T, class X> bool operator==(const QWeakPointer<T> &ptr1, const QSharedPointer<X> &ptr2);

   134 template<class T, class X> bool operator!=(const QWeakPointer<T> &ptr1, const QSharedPointer<X> &ptr2);

   135 template<class T, class X> bool operator==(const QSharedPointer<T> &ptr1, const QWeakPointer<X> &ptr2);

   136 template<class T, class X> bool operator!=(const QSharedPointer<T> &ptr1, const QWeakPointer<X> &ptr2);

   137 

   138 template <class X, class T> QSharedPointer<X> qSharedPointerCast(const QSharedPointer<T> &other);

   139 template <class X, class T> QSharedPointer<X> qSharedPointerCast(const QWeakPointer<T> &other);

   140 template <class X, class T> QSharedPointer<X> qSharedPointerDynamicCast(const QSharedPointer<T> &src);

   141 template <class X, class T> QSharedPointer<X> qSharedPointerDynamicCast(const QWeakPointer<T> &src);

   142 template <class X, class T> QSharedPointer<X> qSharedPointerConstCast(const QSharedPointer<T> &src);

   143 template <class X, class T> QSharedPointer<X> qSharedPointerConstCast(const QWeakPointer<T> &src);

   144 template <class X, class T> QSharedPointer<X> qSharedPointerObjectCast(const QSharedPointer<T> &src);

   145 template <class X, class T> QSharedPointer<X> qSharedPointerObjectCast(const QWeakPointer<T> &src);

   146 

   147 template <class X, class T> QWeakPointer<X> qWeakPointerCast(const QWeakPointer<T> &src);

   148 

   149 QT_END_NAMESPACE

   150 

   151 QT_END_HEADER

   152 

   153 #endif // Q_QDOC

   154 

   155 #endif // QSHAREDPOINTER_H