00001 // Copyright (C) 2007, 2008, 2009 EPITA Research and Development Laboratory (LRDE) 00002 // 00003 // This file is part of Olena. 00004 // 00005 // Olena is free software: you can redistribute it and/or modify it under 00006 // the terms of the GNU General Public License as published by the Free 00007 // Software Foundation, version 2 of the License. 00008 // 00009 // Olena is distributed in the hope that it will be useful, 00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 // General Public License for more details. 00013 // 00014 // You should have received a copy of the GNU General Public License 00015 // along with Olena. If not, see <http://www.gnu.org/licenses/>. 00016 // 00017 // As a special exception, you may use this file as part of a free 00018 // software project without restriction. Specifically, if other files 00019 // instantiate templates or use macros or inline functions from this 00020 // file, or you compile this file and link it with other files to produce 00021 // an executable, this file does not by itself cause the resulting 00022 // executable to be covered by the GNU General Public License. This 00023 // exception does not however invalidate any other reasons why the 00024 // executable file might be covered by the GNU General Public License. 00025 00026 #include <mln/trait/op/uminus.hh> 00027 #include <mln/core/concept/object.hh> 00028 00029 00030 template <typename E> struct Top_Concept; 00031 template <typename E> struct Sub_Concept; 00032 00033 00034 // Top_Concept. 00035 00036 template <> struct Top_Concept<void> { typedef mln::Object<void> super; }; 00037 00038 template <typename E> 00039 struct Top_Concept 00040 { 00041 typedef Top_Concept<void> category; 00042 protected: 00043 Top_Concept() {} 00044 }; 00045 00046 00047 // Sub_Concept. 00048 00049 template <> struct Sub_Concept<void> { typedef Top_Concept<void> super; }; 00050 00051 template <typename E> 00052 struct Sub_Concept 00053 { 00054 typedef Sub_Concept<void> category; 00055 protected: 00056 Sub_Concept() {} 00057 }; 00058 00059 00060 // test. 00061 00062 struct test : Sub_Concept< test > 00063 { 00064 void is_test() {} 00065 }; 00066 00067 00068 namespace mln 00069 { 00070 00071 namespace trait 00072 { 00073 00074 // FIXME: Dead code? 00075 // template <> 00076 // struct p_setrecise_unary_< op::uminus, test > 00077 // { 00078 // typedef bool ret; 00079 // }; 00080 00081 // template <typename T> 00082 // struct set_unary_< op::uminus, Sub_Concept, T > 00083 // { 00084 // typedef int ret; 00085 // }; 00086 00087 // template <typename T> 00088 // struct set_unary_< op::uminus, Top_Concept, T > 00089 // { 00090 // typedef float ret; 00091 // }; 00092 00093 } // mln::trait 00094 00095 } // mln 00096 00097 00098 int main() 00099 { 00100 using namespace mln; 00101 00102 // FIXME: Dead code? 00103 00104 // { 00105 // mln_trait_op_uminus_(test) tmp; /* bool if precise */ 00106 // bool* b = &tmp; 00107 // *b = true; 00108 // } 00109 00110 // { 00111 // mln_trait_op_uminus_(test) tmp; /* int if no precise def and both sub and top defs */ 00112 // void* v = tmp; 00113 // } 00114 00115 // { 00116 // mln_trait_op_uminus_(test) tmp; /* float if only top def */ 00117 // void* v = tmp; 00118 // } 00119 00120 // { 00121 // mln_trait_op_uminus_(test) tmp; // test if no def here (default is id, given for Object) 00122 // tmp.is_test(); 00123 // } 00124 00125 }
1.7.1