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include/QxTraits/is_smart_ptr_base_of.h
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include/QxTraits/is_smart_ptr_base_of.h
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/****************************************************************************
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**
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** https://www.qxorm.com/
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** Copyright (C) 2013 XDL Team (ic-east.com)
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**
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** This file is part of the QxOrm library
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**
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** This software is provided 'as-is', without any express or implied
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** warranty. In no event will the authors be held liable for any
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** damages arising from the use of this software
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**
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** Commercial Usage
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** Licensees holding valid commercial QxOrm 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 XDL Team
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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.gpl3.txt' 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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** If you are unsure which license is appropriate for your use, or
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** if you have questions regarding the use of this file, please contact :
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** ic-east.com
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**
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****************************************************************************/
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#ifndef _QX_IS_SMART_PTR_BASE_OF_H_
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#define _QX_IS_SMART_PTR_BASE_OF_H_
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#ifdef _MSC_VER
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#pragma once
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#endif
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/*!
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* \file is_smart_ptr_base_of.h
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* \author XDL Team
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* \ingroup QxTraits
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* \brief qx::trait::is_smart_ptr_base_of<B, D>::value : return true if B and D are smart-pointers of boost, Qt or QxOrm libraries and if (*B) is a base class of (*D), otherwise return false
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*/
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#include <QxTraits/is_smart_ptr.h>
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#define qx_smart_ptr_base_of_test_0() (sizeof(qx::trait::is_smart_ptr_base_of<B, D>::removeSmartPtr(b, d)) == sizeof(char))
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#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))
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#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))
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#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))
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#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))
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#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))
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#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))
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#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))
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#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))
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#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))
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#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))
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#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))
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#define qx_smart_ptr_base_of_all_test() \
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qx_smart_ptr_base_of_test_1() || qx_smart_ptr_base_of_test_2() || qx_smart_ptr_base_of_test_3() || \
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qx_smart_ptr_base_of_test_4() || qx_smart_ptr_base_of_test_5() || qx_smart_ptr_base_of_test_6() || \
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qx_smart_ptr_base_of_test_7() || qx_smart_ptr_base_of_test_8() || qx_smart_ptr_base_of_test_9() || \
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qx_smart_ptr_base_of_test_10() || qx_smart_ptr_base_of_test_11()
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namespace qx
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{
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namespace trait
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{
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/*!
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* \ingroup QxTraits
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* \brief qx::trait::is_smart_ptr_base_of<B, D>::value : return true if B and D are smart-pointers of boost, Qt or QxOrm libraries and if (*B) is a base class of (*D), otherwise return false
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*/
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template <typename B, typename D>
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class is_smart_ptr_base_of
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{
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private:
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#ifdef _QX_ENABLE_BOOST
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template <typename V, typename W>
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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> &);
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template <typename V, typename W>
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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> &);
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template <typename V, typename W>
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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> &);
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template <typename V, typename W>
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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> &);
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#endif // _QX_ENABLE_BOOST
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template <typename V, typename W>
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static typename std::conditional<std::is_base_of<V, W>::value, char, int>::type removeSmartPtr(const QSharedDataPointer<V> &, const QSharedDataPointer<W> &);
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template <typename V, typename W>
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static typename std::conditional<std::is_base_of<V, W>::value, char, int>::type removeSmartPtr(const QSharedPointer<V> &, const QSharedPointer<W> &);
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template <typename V, typename W>
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static typename std::conditional<std::is_base_of<V, W>::value, char, int>::type removeSmartPtr(const QWeakPointer<V> &, const QWeakPointer<W> &);
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template <typename V, typename W>
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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> &);
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template <typename V, typename W>
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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> &);
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template <typename V, typename W>
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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> &);
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template <typename V, typename W>
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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> &);
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static int removeSmartPtr(...);
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static B b;
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static D d;
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#ifdef _QX_ENABLE_BOOST
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static boost::scoped_ptr<B> *b_boost_scoped_ptr;
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static boost::shared_ptr<B> *b_boost_shared_ptr;
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static boost::weak_ptr<B> *b_boost_weak_ptr;
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static boost::intrusive_ptr<B> *b_boost_intrusive_ptr;
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#endif // _QX_ENABLE_BOOST
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static QSharedDataPointer<B> *b_qt_shared_data_ptr;
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static QSharedPointer<B> *b_qt_shared_ptr;
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static QWeakPointer<B> *b_qt_weak_ptr;
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static qx::dao::ptr<B> *b_qx_dao_ptr;
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static std::unique_ptr<B> *b_std_unique_ptr;
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static std::shared_ptr<B> *b_std_shared_ptr;
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static std::weak_ptr<B> *b_std_weak_ptr;
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enum
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{
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value_0 = (qx::trait::is_smart_ptr<D>::value)
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};
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enum
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{
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value_1 = (qx::trait::is_smart_ptr<B>::value)
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};
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enum
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{
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value_2 = ((value_0 && value_1) ? qx_smart_ptr_base_of_test_0() : 0)
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};
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enum
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{
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value_3 = ((value_0 && !value_1) ? qx_smart_ptr_base_of_all_test() : 0)
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};
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public:
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enum
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{
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value = (qx::trait::is_smart_ptr_base_of<B, D>::value_2 || qx::trait::is_smart_ptr_base_of<B, D>::value_3)
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};
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typedef typename std::conditional<qx::trait::is_smart_ptr_base_of<B, D>::value, std::true_type, std::false_type>::type type;
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};
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} // namespace trait
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} // namespace qx
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#endif // _QX_IS_SMART_PTR_BASE_OF_H_
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