00001 // Copyright (C) 2007, 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_CORE_TRAIT_PIXTER_HH 00027 # define MLN_CORE_TRAIT_PIXTER_HH 00028 00034 # include <mln/metal/none.hh> 00035 00036 00037 namespace mln 00038 { 00039 00040 namespace trait 00041 { 00042 00043 00044 // pixter 00045 00046 template <typename I> 00047 struct fwd_pixter 00048 { 00049 typedef metal::none ret; 00050 }; 00051 00052 template <typename I> 00053 struct bkd_pixter 00054 { 00055 typedef metal::none ret; 00056 }; 00057 00058 00059 // qixter 00060 00061 template <typename I, typename W> 00062 struct fwd_qixter 00063 { 00064 typedef metal::none ret; 00065 }; 00066 00067 template <typename I, typename W> 00068 struct bkd_qixter 00069 { 00070 typedef metal::none ret; 00071 }; 00072 00073 00074 // nixter 00075 00076 template <typename I, typename N> 00077 struct fwd_nixter 00078 { 00079 typedef metal::none ret; 00080 }; 00081 00082 template <typename I, typename N> 00083 struct bkd_nixter 00084 { 00085 typedef metal::none ret; 00086 }; 00087 00088 00089 } // end of namespace mln::trait 00090 00091 } // end of namespace mln 00092 00093 00094 #endif // ! MLN_CORE_TRAIT_PIXTER_HH