include/my_lib/internal/nuple_util.hh
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00001 00010 #ifndef HELP_GET_HH 00011 #define HELP_GET_HH 00012 00013 #include"../type_list/type_list.hh" 00014 #include"../type_list/get_list.hh" 00015 00016 namespace my_lib{ 00018 namespace internal{ 00019 00025 template<typename TList, unsigned N> 00026 struct HelpGet { 00027 typedef typename type_list::GetType<TList,N>::type val_type; 00028 typedef typename TList::tail tail; 00029 00038 static val_type& get(Nuple<tail>& uple) { 00039 return HelpGet<tail,N-1>::get(uple) ; 00040 } 00041 00050 static const val_type& get(const Nuple<tail>& uple) { 00051 return HelpGet<tail,N-1>::get(uple) ; 00052 } 00053 }; 00054 00056 template<typename TList> 00057 struct HelpGet<TList, 0> { 00058 typedef typename TList::head val_type; 00060 static val_type& get(Nuple<TList>& uple){ 00061 return uple.val; 00062 } 00063 00064 static const val_type& get(const Nuple<TList>& uple){ 00065 return uple.val; 00066 } 00067 }; 00068 00075 template<typename TList, unsigned N> 00076 struct PrintNuple { 00077 static void print(std::ostream& o, const Nuple<TList>& u) { 00078 PrintNuple<TList, N-1>::print(o, u); 00079 o << internal::HelpGet<TList, N-1>::get(u) << ' '; 00080 } 00081 }; 00082 00083 template<typename TList> 00084 struct PrintNuple<TList, 0> { 00085 static void print(std::ostream& o, const Nuple<TList>& u) {} 00086 }; 00087 00088 00089 }//fin internal 00090 }//fin my_lib 00091 00092 #endif //HELP_GET_HH
