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construct_ptr.h
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    00001 /****************************************************************************
    00002 **
    00003 ** http://www.qxorm.com/
    00004 ** Copyright (C) 2013 Lionel Marty (contact@qxorm.com)
    00005 **
    00006 ** This file is part of the QxOrm library
    00007 **
    00008 ** This software is provided 'as-is', without any express or implied
    00009 ** warranty. In no event will the authors be held liable for any
    00010 ** damages arising from the use of this software
    00011 **
    00012 ** Commercial Usage
    00013 ** Licensees holding valid commercial QxOrm licenses may use this file in
    00014 ** accordance with the commercial license agreement provided with the
    00015 ** Software or, alternatively, in accordance with the terms contained in
    00016 ** a written agreement between you and Lionel Marty
    00017 **
    00018 ** GNU General Public License Usage
    00019 ** Alternatively, this file may be used under the terms of the GNU
    00020 ** General Public License version 3.0 as published by the Free Software
    00021 ** Foundation and appearing in the file 'license.gpl3.txt' included in the
    00022 ** packaging of this file. Please review the following information to
    00023 ** ensure the GNU General Public License version 3.0 requirements will be
    00024 ** met : http://www.gnu.org/copyleft/gpl.html
    00025 **
    00026 ** If you are unsure which license is appropriate for your use, or
    00027 ** if you have questions regarding the use of this file, please contact :
    00028 ** contact@qxorm.com
    00029 **
    00030 ****************************************************************************/
    00031
    00032 #ifndef _QX_CONSTRUCT_PTR_H_
    00033 #define _QX_CONSTRUCT_PTR_H_
    00034
    00035 #ifdef _MSC_VER
    00036 #pragma once
    00037 #endif
    00038
    00046 #include <QtCore/qsharedpointer.h>
    00047
    00048 #if (QT_VERSION >= 0x040600)
    00049 #include <QtCore/qscopedpointer.h>
    00050 #endif // (QT_VERSION >= 0x040600)
    00051
    00052 #include <QxDao/QxDaoPointer.h>
    00053
    00054 namespace qx {
    00055 namespace trait {
    00056
    00061 template <typename T>
    00062 struct construct_ptr
    00063 {
    00064
    00065 private:
    00066
    00067    typedef typename std::remove_pointer<T>::type type_ptr;
    00068
    00069 public:
    00070
    00071    static inline void get(T & t)
    00072    { new_ptr<std::is_abstract<type_ptr>::value, 0>::get(t); }
    00073
    00074 private:
    00075
    00076    template <bool isAbstract /* = false */, int dummy>
    00077    struct new_ptr
    00078    { static inline void get(T & t) { t = new type_ptr(); } };
    00079
    00080    template <int dummy>
    00081    struct new_ptr<true, dummy>
    00082    { static inline void get(T & t) { Q_UNUSED(t); qDebug("[QxOrm] qx::trait::construct_ptr<T> : %s", "cannot instantiate abstract class"); } };
    00083
    00084 };
    00085
    00086 #ifdef _QX_ENABLE_BOOST
    00087
    00088 template <typename T>
    00089 struct construct_ptr< boost::scoped_ptr<T> >
    00090 { static inline void get(boost::scoped_ptr<T> & t) { t.reset(new T()); } };
    00091
    00092 template <typename T>
    00093 struct construct_ptr< boost::shared_ptr<T> >
    00094 { static inline void get(boost::shared_ptr<T> & t) { t.reset(new T()); } };
    00095
    00096 template <typename T>
    00097 struct construct_ptr< boost::intrusive_ptr<T> >
    00098 { static inline void get(boost::intrusive_ptr<T> & t) { t.reset(new T()); } };
    00099
    00100 #endif // _QX_ENABLE_BOOST
    00101
    00102 template <typename T>
    00103 struct construct_ptr< QSharedPointer<T> >
    00104 { static inline void get(QSharedPointer<T> & t) { t = QSharedPointer<T>(new T()); } };
    00105
    00106 #if (QT_VERSION >= 0x040600)
    00107 template <typename T>
    00108 struct construct_ptr< QScopedPointer<T> >
    00109 { static inline void get(QScopedPointer<T> & t) { t = QScopedPointer<T>(new T()); } };
    00110 #endif // (QT_VERSION >= 0x040600)
    00111
    00112 template <typename T>
    00113 struct construct_ptr< qx::dao::ptr<T> >
    00114 { static inline void get(qx::dao::ptr<T> & t) { t = qx::dao::ptr<T>(new T()); } };
    00115
    00116 template <typename T>
    00117 struct construct_ptr< std::unique_ptr<T> >
    00118 { static inline void get(std::unique_ptr<T> & t) { t.reset(new T()); } };
    00119
    00120 template <typename T>
    00121 struct construct_ptr< std::shared_ptr<T> >
    00122 { static inline void get(std::shared_ptr<T> & t) { t.reset(new T()); } };
    00123
    00124 } // namespace trait
    00125 } // namespace qx
    00126
    00127 #endif // _QX_CONSTRUCT_PTR_H_