00001 // Copyright (C) 2004, 2005 Laboratoire d'Informatique de Paris 6 (LIP6), 00002 // département Systèmes Répartis Coopératifs (SRC), Université Pierre 00003 // et Marie Curie. 00004 // 00005 // This file is part of Spot, a model checking library. 00006 // 00007 // Spot is free software; you can redistribute it and/or modify it 00008 // under the terms of the GNU General Public License as published by 00009 // the Free Software Foundation; either version 2 of the License, or 00010 // (at your option) any later version. 00011 // 00012 // Spot is distributed in the hope that it will be useful, but WITHOUT 00013 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 00014 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 00015 // License for more details. 00016 // 00017 // You should have received a copy of the GNU General Public License 00018 // along with Spot; see the file COPYING. If not, write to the Free 00019 // Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 00020 // 02111-1307, USA. 00021 00022 #ifndef SPOT_TGBAALGOS_BFSSTEPS_HH 00023 # define SPOT_TGBAALGOS_BFSSTEPS_HH 00024 00025 #include <map> 00026 #include "tgba/state.hh" 00027 #include "emptiness.hh" 00028 00029 namespace spot 00030 { 00041 class bfs_steps 00042 { 00043 public: 00044 bfs_steps(const tgba* a); 00045 virtual ~bfs_steps(); 00046 00052 const state* search(const state* start, tgba_run::steps& l); 00053 00070 virtual const state* filter(const state* s) = 0; 00071 00086 virtual bool match(tgba_run::step& step, const state* dest) = 0; 00087 00094 virtual void finalize(const std::map<const state*, tgba_run::step, 00095 state_ptr_less_than>& father, 00096 const tgba_run::step& s, 00097 const state* start, 00098 tgba_run::steps& l); 00099 00100 protected: 00101 const tgba* a_; 00102 }; 00103 00104 00105 } 00106 00107 #endif // SPOT_TGBAALGOS_BFSSTEPS_HH