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reachiter.hh

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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

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