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_FUN_PARAM_HH 00027 # define MLN_FUN_PARAM_HH 00028 00029 namespace mln 00030 { 00031 00032 namespace fun 00033 { 00034 00035 template <typename T> 00036 struct stored 00037 { 00038 typedef T value; 00039 00040 const T& to_value() const 00041 { 00042 return t_; 00043 } 00044 00045 T& to_value() 00046 { 00047 return t_; 00048 } 00049 00050 operator const T& () const 00051 { 00052 return to_value(); 00053 } 00054 00055 operator T& () 00056 { 00057 return to_value(); 00058 } 00059 00060 stored& operator = (const T& t) 00061 { 00062 t_ = t; 00063 return *this; 00064 } 00065 00066 protected: 00067 T t_; 00068 }; 00069 00070 template <> 00071 struct stored<void> 00072 { 00073 }; 00074 00075 template <typename F> 00076 struct parameter 00077 { 00078 typedef void param; 00079 typedef void storage; 00080 }; 00081 00082 } // end of namespace mln::fun 00083 00084 } // end of namespace mln 00085 00086 #endif // ! MLN_FUN_PARAM_HH
1.7.1