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is_container_to_pod.h
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    00001 /****************************************************************************
    00002 **
    00003 ** http://www.qxorm.com/
    00004 ** http://sourceforge.net/projects/qxorm/
    00005 ** Original file by Lionel Marty
    00006 **
    00007 ** This file is part of the QxOrm library
    00008 **
    00009 ** This software is provided 'as-is', without any express or implied
    00010 ** warranty. In no event will the authors be held liable for any
    00011 ** damages arising from the use of this software.
    00012 **
    00013 ** GNU Lesser General Public License Usage
    00014 ** This file must be used under the terms of the GNU Lesser
    00015 ** General Public License version 2.1 as published by the Free Software
    00016 ** Foundation and appearing in the file 'license.lgpl.txt' included in the
    00017 ** packaging of this file.  Please review the following information to
    00018 ** ensure the GNU Lesser General Public License version 2.1 requirements
    00019 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
    00020 **
    00021 ** If you have questions regarding the use of this file, please contact :
    00022 ** contact@qxorm.com
    00023 **
    00024 ****************************************************************************/
    00025
    00026 #ifndef _QX_IS_CONTAINER_TO_POD_H_
    00027 #define _QX_IS_CONTAINER_TO_POD_H_
    00028
    00029 #ifdef _MSC_VER
    00030 #pragma once
    00031 #endif
    00032
    00033 #include <boost/mpl/if.hpp>
    00034 #include <boost/mpl/logical.hpp>
    00035
    00036 #include <QxTraits/is_container.h>
    00037 #include <QxTraits/is_qx_pod.h>
    00038
    00039 namespace qx {
    00040 namespace trait {
    00041
    00042 template <typename T>
    00043 class is_container_to_pod
    00044 {
    00045
    00046 private:
    00047
    00048    template <typename U>
    00049    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const std::vector<U> &);
    00050
    00051    template <typename U>
    00052    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const std::list<U> &);
    00053
    00054    template <typename U>
    00055    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const std::set<U> &);
    00056
    00057    template <typename U>
    00058    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const QVector<U> &);
    00059
    00060    template <typename U>
    00061    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const QList<U> &);
    00062
    00063    template <typename U>
    00064    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const QSet<U> &);
    00065
    00066    template <typename U>
    00067    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const QLinkedList<U> &);
    00068
    00069    template <typename U>
    00070    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const boost::unordered_set<U> &);
    00071
    00072    template <typename U>
    00073    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const boost::unordered_multiset<U> &);
    00074
    00075    static int removeContainer(...);
    00076    static T t;
    00077
    00078 public:
    00079
    00080    enum { value = (qx::trait::is_container<T>::value && (sizeof(qx::trait::is_container_to_pod<T>::removeContainer(t)) == sizeof(char))) };
    00081
    00082    typedef typename boost::mpl::if_c<qx::trait::is_container_to_pod<T>::value, boost::mpl::true_, boost::mpl::false_>::type type;
    00083
    00084 };
    00085
    00086 } // namespace trait
    00087 } // namespace qx
    00088
    00089 #endif // _QX_IS_CONTAINER_TO_POD_H_

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