QxOrm  1.4.3
C++ Object Relational Mapping library
is_ptr_to_pod.h
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00002 **
00003 ** http://www.qxorm.com/
00004 ** Copyright (C) 2013 Lionel Marty (contact@qxorm.com)
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00031 
00032 #ifndef _QX_IS_PTR_TO_POD_H_
00033 #define _QX_IS_PTR_TO_POD_H_
00034 
00035 #ifdef _MSC_VER
00036 #pragma once
00037 #endif
00038 
00046 #include <boost/mpl/if.hpp>
00047 #include <boost/mpl/logical.hpp>
00048 #include <boost/type_traits/is_pointer.hpp>
00049 
00050 #include <QxTraits/is_qx_pod.h>
00051 
00052 namespace qx {
00053 namespace trait {
00054 
00059 template <typename T>
00060 class is_ptr_to_pod
00061 {
00062 
00063 private:
00064 
00065    template <typename U>
00066    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removePtr(const volatile U * const volatile);
00067 
00068    static int removePtr(...);
00069    static T t;
00070 
00071 public:
00072 
00073    enum { value = (boost::is_pointer<T>::value && (sizeof(qx::trait::is_ptr_to_pod<T>::removePtr(t)) == sizeof(char))) };
00074 
00075    typedef typename boost::mpl::if_c<qx::trait::is_ptr_to_pod<T>::value, boost::mpl::true_, boost::mpl::false_>::type type;
00076 
00077 };
00078 
00079 } // namespace trait
00080 } // namespace qx
00081 
00082 #endif // _QX_IS_PTR_TO_POD_H_