Milena (Olena)
User documentation 2.0a Id
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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_PW_VAR_HH 00027 # define MLN_PW_VAR_HH 00028 00034 # include <mln/core/concept/function.hh> 00035 00036 00037 namespace mln 00038 { 00039 00040 // FIXME: Doc! 00041 00042 namespace pw 00043 { 00044 00045 template <typename V> 00046 struct var_ : public Function_v2v< var_<V> > 00047 { 00048 typedef V result; 00049 00050 var_(); 00051 00052 var_(const V& v); 00053 00054 template <typename P> 00055 const V& operator()(const P&) const; 00056 00057 private: 00058 const V* v_; 00059 }; 00060 00061 00062 template <typename V> 00063 var_<V> var(const V& v); 00064 00065 00066 # ifndef MLN_INCLUDE_ONLY 00067 00068 // pw::var_<V> 00069 00070 template <typename V> 00071 inline 00072 var_<V>::var_() 00073 : v_(0) 00074 { 00075 } 00076 00077 template <typename V> 00078 inline 00079 var_<V>::var_(const V& v) 00080 : v_(&v) 00081 { 00082 } 00083 00084 template <typename V> 00085 template <typename P> 00086 inline 00087 const V& 00088 var_<V>::operator()(const P&) const 00089 { 00090 mln_precondition(v_ != 0); 00091 return *v_; 00092 } 00093 00094 // pw::var(v) 00095 00096 template <typename V> 00097 inline 00098 var_<V> var(const V& v) 00099 { 00100 var_<V> tmp(v); 00101 return tmp; 00102 } 00103 00104 # endif // ! MLN_INCLUDE_ONLY 00105 00106 } // end of namespace mln::pw 00107 00108 } // end of namespace mln 00109 00110 00111 #endif // ! MLN_PW_VAR_HH