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_CORE_CONTRACT_HH 00027 # define MLN_CORE_CONTRACT_HH 00028 00032 00033 # include <cassert> 00034 00035 // Define a preprocessor constant HAS_NDEBUG reflecting the existence 00036 // of NDEBUG, as avised by the section Conditional Compilation of the 00037 // GNU Coding Standards 00038 // (http://www.gnu.org/prep/standards/html_node/Conditional-Compilation.html). 00039 #ifdef NDEBUG 00040 #define HAS_NDEBUG 1 00041 #else 00042 #define HAS_NDEBUG 0 00043 #endif 00044 00046 # define mln_assertion(expr) assert((bool)(expr)) 00047 00049 # define mln_invariant(expr) assert((bool)(expr)) 00050 00052 # define mln_precondition(expr) assert((bool)(expr)) 00053 00055 # define mln_postcondition(expr) assert((bool)(expr)) 00056 00057 00058 namespace mln 00059 { 00060 00062 bool implies(bool lexpr, bool rexpr); 00063 00064 00065 # ifndef MLN_INCLUDE_ONLY 00066 00067 inline 00068 bool implies(bool lexpr, bool rexpr) 00069 { 00070 return (! lexpr) || rexpr; 00071 } 00072 00073 # endif // ! MLN_INCLUDE_ONLY 00074 00075 } // end of namespace mln 00076 00077 00078 #endif // ! MLN_CORE_CONTRACT_HH
1.7.1