00001 // Copyright (C) 2003, 2004 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_REACHITER_HH 00023 # define SPOT_TGBAALGOS_REACHITER_HH 00024 00025 #include "misc/hash.hh" 00026 #include "tgba/tgba.hh" 00027 #include <stack> 00028 #include <deque> 00029 00030 namespace spot 00031 { 00034 class tgba_reachable_iterator 00035 { 00036 public: 00037 tgba_reachable_iterator(const tgba* a); 00038 virtual ~tgba_reachable_iterator(); 00039 00045 void run(); 00046 00054 virtual void add_state(const state* s) = 0; 00056 virtual const state* next_state() = 0; 00058 00060 virtual void start(); 00062 virtual void end(); 00063 00069 virtual void process_state(const state* s, int n, tgba_succ_iterator* si); 00082 virtual void process_link(const state* in_s, int in, 00083 const state* out_s, int out, 00084 const tgba_succ_iterator* si); 00085 00086 protected: 00087 const tgba* automata_; 00088 00089 typedef Sgi::hash_map<const state*, int, 00090 state_ptr_hash, state_ptr_equal> seen_map; 00091 seen_map seen; 00092 }; 00093 00097 class tgba_reachable_iterator_depth_first : public tgba_reachable_iterator 00098 { 00099 public: 00100 tgba_reachable_iterator_depth_first(const tgba* a); 00101 00102 virtual void add_state(const state* s); 00103 virtual const state* next_state(); 00104 00105 protected: 00106 std::stack<const state*> todo; 00107 }; 00108 00112 class tgba_reachable_iterator_breadth_first : public tgba_reachable_iterator 00113 { 00114 public: 00115 tgba_reachable_iterator_breadth_first(const tgba* a); 00116 00117 virtual void add_state(const state* s); 00118 virtual const state* next_state(); 00119 00120 protected: 00121 std::deque<const state*> todo; 00122 }; 00123 00124 00125 } 00126 00127 00128 #endif // SPOT_TGBAALGOS_REACHITER_HH