00001 // Copyright (C) 2008, 2009 Laboratoire de Recherche et Développement 00002 // de l'Epita (LRDE). 00003 // Copyright (C) 2003, 2004 Laboratoire d'Informatique de Paris 6 00004 // (LIP6), département Systèmes Répartis Coopératifs (SRC), Université 00005 // Pierre et Marie Curie. 00006 // 00007 // This file is part of Spot, a model checking library. 00008 // 00009 // Spot is free software; you can redistribute it and/or modify it 00010 // under the terms of the GNU General Public License as published by 00011 // the Free Software Foundation; either version 2 of the License, or 00012 // (at your option) any later version. 00013 // 00014 // Spot is distributed in the hope that it will be useful, but WITHOUT 00015 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 00016 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 00017 // License for more details. 00018 // 00019 // You should have received a copy of the GNU General Public License 00020 // along with Spot; see the file COPYING. If not, write to the Free 00021 // Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 00022 // 02111-1307, USA. 00023 00024 #ifndef SPOT_TGBAALGOS_REACHITER_HH 00025 # define SPOT_TGBAALGOS_REACHITER_HH 00026 00027 #include "misc/hash.hh" 00028 #include "tgba/tgba.hh" 00029 #include <stack> 00030 #include <deque> 00031 00032 namespace spot 00033 { 00036 class tgba_reachable_iterator 00037 { 00038 public: 00039 tgba_reachable_iterator(const tgba* a); 00040 virtual ~tgba_reachable_iterator(); 00041 00047 void run(); 00048 00056 virtual void add_state(const state* s) = 0; 00058 virtual const state* next_state() = 0; 00060 00063 virtual bool want_state(const state* s) const; 00064 00066 virtual void start(); 00068 virtual void end(); 00069 00075 virtual void process_state(const state* s, int n, tgba_succ_iterator* si); 00088 virtual void process_link(const state* in_s, int in, 00089 const state* out_s, int out, 00090 const tgba_succ_iterator* si); 00091 00092 protected: 00093 const tgba* automata_; 00094 00095 typedef Sgi::hash_map<const state*, int, 00096 state_ptr_hash, state_ptr_equal> seen_map; 00097 seen_map seen; 00098 }; 00099 00103 class tgba_reachable_iterator_depth_first : public tgba_reachable_iterator 00104 { 00105 public: 00106 tgba_reachable_iterator_depth_first(const tgba* a); 00107 00108 virtual void add_state(const state* s); 00109 virtual const state* next_state(); 00110 00111 protected: 00112 std::stack<const state*> todo; 00113 }; 00114 00118 class tgba_reachable_iterator_breadth_first : public tgba_reachable_iterator 00119 { 00120 public: 00121 tgba_reachable_iterator_breadth_first(const tgba* a); 00122 00123 virtual void add_state(const state* s); 00124 virtual const state* next_state(); 00125 00126 protected: 00127 std::deque<const state*> todo; 00128 }; 00129 00130 00131 } 00132 00133 00134 #endif // SPOT_TGBAALGOS_REACHITER_HH