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is_smart_ptr_base_of.h
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    00001 /****************************************************************************
    00002 **
    00003 ** https://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 :
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    00030 ****************************************************************************/
    00031
    00032 #ifndef _QX_IS_SMART_PTR_BASE_OF_H_
    00033 #define _QX_IS_SMART_PTR_BASE_OF_H_
    00034
    00035 #ifdef _MSC_VER
    00036 #pragma once
    00037 #endif
    00038
    00046 #include <QxTraits/is_smart_ptr.h>
    00047
    00048 #define qx_smart_ptr_base_of_test_0() (sizeof(qx::trait::is_smart_ptr_base_of<B, D>::removeSmartPtr(b, d)) == sizeof(char))
    00049 #define qx_smart_ptr_base_of_test_1() (sizeof(qx::trait::is_smart_ptr_base_of<B, D>::removeSmartPtr((* b_boost_scoped_ptr), d)) == sizeof(char))
    00050 #define qx_smart_ptr_base_of_test_2() (sizeof(qx::trait::is_smart_ptr_base_of<B, D>::removeSmartPtr((* b_boost_shared_ptr), d)) == sizeof(char))
    00051 #define qx_smart_ptr_base_of_test_3() (sizeof(qx::trait::is_smart_ptr_base_of<B, D>::removeSmartPtr((* b_boost_weak_ptr), d)) == sizeof(char))
    00052 #define qx_smart_ptr_base_of_test_4() (sizeof(qx::trait::is_smart_ptr_base_of<B, D>::removeSmartPtr((* b_boost_intrusive_ptr), d)) == sizeof(char))
    00053 #define qx_smart_ptr_base_of_test_5() (sizeof(qx::trait::is_smart_ptr_base_of<B, D>::removeSmartPtr((* b_qt_shared_data_ptr), d)) == sizeof(char))
    00054 #define qx_smart_ptr_base_of_test_6() (sizeof(qx::trait::is_smart_ptr_base_of<B, D>::removeSmartPtr((* b_qt_shared_ptr), d)) == sizeof(char))
    00055 #define qx_smart_ptr_base_of_test_7() (sizeof(qx::trait::is_smart_ptr_base_of<B, D>::removeSmartPtr((* b_qt_weak_ptr), d)) == sizeof(char))
    00056 #define qx_smart_ptr_base_of_test_8() (sizeof(qx::trait::is_smart_ptr_base_of<B, D>::removeSmartPtr((* b_qx_dao_ptr), d)) == sizeof(char))
    00057
    00058 #define qx_smart_ptr_base_of_test_9()  (sizeof(qx::trait::is_smart_ptr_base_of<B, D>::removeSmartPtr((* b_std_unique_ptr), d)) == sizeof(char))
    00059 #define qx_smart_ptr_base_of_test_10() (sizeof(qx::trait::is_smart_ptr_base_of<B, D>::removeSmartPtr((* b_std_shared_ptr), d)) == sizeof(char))
    00060 #define qx_smart_ptr_base_of_test_11() (sizeof(qx::trait::is_smart_ptr_base_of<B, D>::removeSmartPtr((* b_std_weak_ptr), d)) == sizeof(char))
    00061
    00062 #define qx_smart_ptr_base_of_all_test() \
    00063 qx_smart_ptr_base_of_test_1() || qx_smart_ptr_base_of_test_2() || qx_smart_ptr_base_of_test_3() || \
    00064 qx_smart_ptr_base_of_test_4() || qx_smart_ptr_base_of_test_5() || qx_smart_ptr_base_of_test_6() || \
    00065 qx_smart_ptr_base_of_test_7() || qx_smart_ptr_base_of_test_8() || qx_smart_ptr_base_of_test_9() || \
    00066 qx_smart_ptr_base_of_test_10() || qx_smart_ptr_base_of_test_11()
    00067
    00068 namespace qx {
    00069 namespace trait {
    00070
    00075 template <typename B, typename D>
    00076 class is_smart_ptr_base_of
    00077 {
    00078
    00079 private:
    00080
    00081 #ifdef _QX_ENABLE_BOOST
    00082
    00083    template <typename V, typename W>
    00084    static typename std::conditional<std::is_base_of<V, W>::value, char, int>::type removeSmartPtr(const boost::scoped_ptr<V> &, const boost::scoped_ptr<W> &);
    00085
    00086    template <typename V, typename W>
    00087    static typename std::conditional<std::is_base_of<V, W>::value, char, int>::type removeSmartPtr(const boost::shared_ptr<V> &, const boost::shared_ptr<W> &);
    00088
    00089    template <typename V, typename W>
    00090    static typename std::conditional<std::is_base_of<V, W>::value, char, int>::type removeSmartPtr(const boost::weak_ptr<V> &, const boost::weak_ptr<W> &);
    00091
    00092    template <typename V, typename W>
    00093    static typename std::conditional<std::is_base_of<V, W>::value, char, int>::type removeSmartPtr(const boost::intrusive_ptr<V> &, const boost::intrusive_ptr<W> &);
    00094
    00095 #endif // _QX_ENABLE_BOOST
    00096
    00097    template <typename V, typename W>
    00098    static typename std::conditional<std::is_base_of<V, W>::value, char, int>::type removeSmartPtr(const QSharedDataPointer<V> &, const QSharedDataPointer<W> &);
    00099
    00100    template <typename V, typename W>
    00101    static typename std::conditional<std::is_base_of<V, W>::value, char, int>::type removeSmartPtr(const QSharedPointer<V> &, const QSharedPointer<W> &);
    00102
    00103    template <typename V, typename W>
    00104    static typename std::conditional<std::is_base_of<V, W>::value, char, int>::type removeSmartPtr(const QWeakPointer<V> &, const QWeakPointer<W> &);
    00105
    00106    template <typename V, typename W>
    00107    static typename std::conditional<std::is_base_of<V, W>::value, char, int>::type removeSmartPtr(const qx::dao::ptr<V> &, const qx::dao::ptr<W> &);
    00108
    00109    template <typename V, typename W>
    00110    static typename std::conditional<std::is_base_of<V, W>::value, char, int>::type removeSmartPtr(const std::unique_ptr<V> &, const std::unique_ptr<W> &);
    00111
    00112    template <typename V, typename W>
    00113    static typename std::conditional<std::is_base_of<V, W>::value, char, int>::type removeSmartPtr(const std::shared_ptr<V> &, const std::shared_ptr<W> &);
    00114
    00115    template <typename V, typename W>
    00116    static typename std::conditional<std::is_base_of<V, W>::value, char, int>::type removeSmartPtr(const std::weak_ptr<V> &, const std::weak_ptr<W> &);
    00117
    00118    static int removeSmartPtr(...);
    00119    static B b;
    00120    static D d;
    00121
    00122 #ifdef _QX_ENABLE_BOOST
    00123
    00124    static boost::scoped_ptr<B> * b_boost_scoped_ptr;
    00125    static boost::shared_ptr<B> * b_boost_shared_ptr;
    00126    static boost::weak_ptr<B> * b_boost_weak_ptr;
    00127    static boost::intrusive_ptr<B> * b_boost_intrusive_ptr;
    00128
    00129 #endif // _QX_ENABLE_BOOST
    00130
    00131    static QSharedDataPointer<B> * b_qt_shared_data_ptr;
    00132    static QSharedPointer<B> * b_qt_shared_ptr;
    00133    static QWeakPointer<B> * b_qt_weak_ptr;
    00134    static qx::dao::ptr<B> * b_qx_dao_ptr;
    00135
    00136    static std::unique_ptr<B> * b_std_unique_ptr;
    00137    static std::shared_ptr<B> * b_std_shared_ptr;
    00138    static std::weak_ptr<B> * b_std_weak_ptr;
    00139
    00140    enum { value_0 = (qx::trait::is_smart_ptr<D>::value) };
    00141    enum { value_1 = (qx::trait::is_smart_ptr<B>::value) };
    00142    enum { value_2 = ((value_0 && value_1) ? qx_smart_ptr_base_of_test_0() : 0) };
    00143    enum { value_3 = ((value_0 && ! value_1) ? qx_smart_ptr_base_of_all_test() : 0) };
    00144
    00145 public:
    00146
    00147    enum { value = (qx::trait::is_smart_ptr_base_of<B, D>::value_2 || qx::trait::is_smart_ptr_base_of<B, D>::value_3) };
    00148
    00149    typedef typename std::conditional<qx::trait::is_smart_ptr_base_of<B, D>::value, std::true_type, std::false_type>::type type;
    00150
    00151 };
    00152
    00153 } // namespace trait
    00154 } // namespace qx
    00155
    00156 #endif // _QX_IS_SMART_PTR_BASE_OF_H_