Milena (Olena)
User documentation 2.0a Id
|
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 #ifndef MLN_VALUE_INTERNAL_VALUE_LIKE_HH 00027 # define MLN_VALUE_INTERNAL_VALUE_LIKE_HH 00028 00032 00033 # include <mln/core/concept/value.hh> 00034 # include <mln/core/internal/force_exact.hh> 00035 00036 00037 namespace mln 00038 { 00039 00040 namespace value 00041 { 00042 00043 namespace internal 00044 { 00045 00050 template < typename V, // Equivalent. 00051 typename C, // Encoding. 00052 typename N, // Interoperation. 00053 typename E > 00054 struct value_like_ // FIXME :Remove -> : public Value<E> 00055 { 00057 typedef V equiv; 00058 00060 typedef C enc; 00061 00063 typedef N interop; 00064 00066 V to_equiv() const; 00067 00069 const C& to_enc() const; 00070 00072 N to_interop() const; 00073 00074 00075 // Handle to encoding value. 00076 C& handle_() { return v_; } 00077 00078 protected: 00079 enc v_; 00080 }; 00081 00082 00086 template <typename V, typename C, typename N, typename E> 00087 bool operator==(const value_like_<V,C,N,E>& lhs, const value_like_<V,C,N,E>& rhs); 00088 00089 00093 template <typename V, typename C, typename N, typename E> 00094 bool operator<(const value_like_<V,C,N,E>& lhs, const value_like_<V,C,N,E>& rhs); 00095 00096 00097 # ifndef MLN_INCLUDE_ONLY 00098 00099 template <typename V, typename C, typename N, typename E> 00100 inline 00101 V 00102 value_like_<V,C,N,E>::to_equiv() const 00103 { 00104 return v_; 00105 } 00106 00107 template <typename V, typename C, typename N, typename E> 00108 inline 00109 const C& 00110 value_like_<V,C,N,E>::to_enc() const 00111 { 00112 return v_; 00113 } 00114 00115 template <typename V, typename C, typename N, typename E> 00116 inline 00117 N 00118 value_like_<V,C,N,E>::to_interop() const 00119 { 00120 return static_cast<N>(mln::internal::force_exact<E>(*this)); 00121 } 00122 00123 template <typename V, typename C, typename N, typename E> 00124 inline 00125 bool operator==(const value_like_<V,C,N,E>& lhs, 00126 const value_like_<V,C,N,E>& rhs) 00127 { 00128 return lhs.to_enc() == rhs.to_enc(); 00129 } 00130 00131 template <typename V, typename C, typename N, typename E> 00132 inline 00133 bool operator<(const value_like_<V,C,N,E>& lhs, 00134 const value_like_<V,C,N,E>& rhs) 00135 { 00136 return lhs.to_interop() < rhs.to_interop(); // FIXME HERE: Why interop? 00137 } 00138 00139 # endif // ! MLN_INCLUDE_ONLY 00140 00141 } // end of namespace mln::value::internal 00142 00143 } // end of namespace mln::value 00144 00145 } // end of namespace mln 00146 00147 00148 #endif // ! MLN_VALUE_INTERNAL_VALUE_LIKE_HH