Milena (Olena)  User documentation 2.0a Id
identity.hh
00001 // Copyright (C) 2009, 2011 EPITA Research and Development Laboratory
00002 // (LRDE)
00003 //
00004 // This file is part of Olena.
00005 //
00006 // Olena is free software: you can redistribute it and/or modify it under
00007 // the terms of the GNU General Public License as published by the Free
00008 // Software Foundation, version 2 of the License.
00009 //
00010 // Olena is distributed in the hope that it will be useful,
00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013 // General Public License for more details.
00014 //
00015 // You should have received a copy of the GNU General Public License
00016 // along with Olena.  If not, see <http://www.gnu.org/licenses/>.
00017 //
00018 // As a special exception, you may use this file as part of a free
00019 // software project without restriction.  Specifically, if other files
00020 // instantiate templates or use macros or inline functions from this
00021 // file, or you compile this file and link it with other files to produce
00022 // an executable, this file does not by itself cause the resulting
00023 // executable to be covered by the GNU General Public License.  This
00024 // exception does not however invalidate any other reasons why the
00025 // executable file might be covered by the GNU General Public License.
00026 
00027 #ifndef MLN_LITERAL_IDENTITY_HH
00028 # define MLN_LITERAL_IDENTITY_HH
00029 
00033 
00034 # include <mln/core/concept/literal.hh>
00035 
00036 
00037 namespace mln
00038 {
00039 
00040   namespace literal
00041   {
00042 
00044     struct identity_t : public Literal<identity_t>
00045     {
00046       // This default constructor is needed for compilation with gcc
00047       // 4.6.0, gcc 4.6.1 and Clang.
00048       identity_t();
00049     };
00050 
00052     extern const identity_t identity;
00053 
00054 # ifndef MLN_INCLUDE_ONLY
00055 
00056     inline
00057     identity_t::identity_t()
00058     {
00059     }
00060 
00061 #  ifndef MLN_WO_GLOBAL_VARS
00062 
00063     const identity_t identity;
00064 
00065 #  endif // !MLN_WO_GLOBAL_VARS
00066 
00067 # endif
00068 
00069   } // end of namespace mln::literal
00070 
00071 } // end of namespace mln
00072 
00073 
00074 #endif // ! MLN_LITERAL_IDENTITY_HH
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