Milena (Olena)
User documentation 2.0a Id
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00001 // Copyright (C) 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_FUN_V2V_CH_FUNCTION_VALUE_HH 00027 # define MLN_FUN_V2V_CH_FUNCTION_VALUE_HH 00028 00032 00033 # include <mln/core/concept/function.hh> 00034 # include <mln/fun/internal/ch_function_value_impl.hh> 00035 00036 00037 00038 namespace mln 00039 { 00040 00041 // Forward declaration. 00042 namespace convert { template <typename T, typename O> T to(const O& from); } 00043 00044 namespace fun 00045 { 00046 00047 namespace v2v 00048 { 00049 00051 template <typename F, typename V> 00052 class ch_function_value : public Function_v2v< ch_function_value<F,V> >, 00053 public internal::ch_function_value_impl<F, V> 00054 { 00055 public: 00056 typedef F function; 00057 typedef V result; 00058 typedef V rvalue; 00059 typedef V lvalue; 00060 00061 ch_function_value(); 00062 ch_function_value(const F& f); 00063 00064 template <typename W> 00065 V operator()(const W& w) const; 00066 00067 private: 00068 F f_; 00069 }; 00070 00071 00072 # ifndef MLN_INCLUDE_ONLY 00073 00074 template <typename F, typename V> 00075 inline 00076 ch_function_value<F,V>::ch_function_value() 00077 { 00078 } 00079 00080 template <typename F, typename V> 00081 inline 00082 ch_function_value<F,V>::ch_function_value(const F& f) 00083 { 00084 f_ = f; 00085 } 00086 00087 template <typename F, typename V> 00088 template <typename W> 00089 inline 00090 V 00091 ch_function_value<F,V>::operator()(const W& w) const 00092 { 00093 return mln::convert::to<V>(f_(w)); 00094 } 00095 00096 # endif // ! MLN_INCLUDE_ONLY 00097 00098 } // end of namespace mln::fun::v2v 00099 00100 } // end of namespace mln::fun 00101 00102 } // end of namespace mln 00103 00104 00105 #endif // ! MLN_FUN_V2V_CH_FUNCTION_VALUE_HH