QxOrm 1.1.8
C++ Object Relational Mapping library
is_smart_ptr_to_pod.h
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00025 
00026 #ifndef _QX_IS_SMART_PTR_TO_POD_H_
00027 #define _QX_IS_SMART_PTR_TO_POD_H_
00028 
00029 #ifdef _MSC_VER
00030 #pragma once
00031 #endif
00032 
00040 #include <boost/mpl/if.hpp>
00041 #include <boost/mpl/logical.hpp>
00042 
00043 #include <QxTraits/is_smart_ptr.h>
00044 #include <QxTraits/is_qx_pod.h>
00045 
00046 namespace qx {
00047 namespace trait {
00048 
00053 template <typename T>
00054 class is_smart_ptr_to_pod
00055 {
00056 
00057 private:
00058 
00059    template <typename U>
00060    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeSmartPtr(const boost::scoped_ptr<U> &);
00061 
00062    template <typename U>
00063    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeSmartPtr(const boost::shared_ptr<U> &);
00064 
00065    template <typename U>
00066    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeSmartPtr(const boost::weak_ptr<U> &);
00067 
00068    template <typename U>
00069    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeSmartPtr(const boost::intrusive_ptr<U> &);
00070 
00071    template <typename U>
00072    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeSmartPtr(const QSharedDataPointer<U> &);
00073 
00074    template <typename U>
00075    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeSmartPtr(const QSharedPointer<U> &);
00076 
00077    template <typename U>
00078    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeSmartPtr(const QWeakPointer<U> &);
00079 
00080    template <typename U>
00081    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeSmartPtr(const qx::dao::ptr<U> &);
00082 
00083    static int removeSmartPtr(...);
00084    static T t;
00085 
00086 public:
00087 
00088    enum { value = (qx::trait::is_smart_ptr<T>::value && (sizeof(qx::trait::is_smart_ptr_to_pod<T>::removeSmartPtr(t)) == sizeof(char))) };
00089 
00090    typedef typename boost::mpl::if_c<qx::trait::is_smart_ptr_to_pod<T>::value, boost::mpl::true_, boost::mpl::false_>::type type;
00091 
00092 };
00093 
00094 } // namespace trait
00095 } // namespace qx
00096 
00097 #endif // _QX_IS_SMART_PTR_TO_POD_H_
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