spot  0.9.1
sccstack.hh
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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_GTEC_SCCSTACK_HH
00023 # define SPOT_TGBAALGOS_GTEC_SCCSTACK_HH
00024 
00025 #include <bdd.h>
00026 #include <list>
00027 #include <tgba/state.hh>
00028 
00029 namespace spot
00030 {
00031   // A stack of Strongly-Connected Components, as needed by the
00032   // Tarjan-Couvreur algorithm.
00033   class scc_stack
00034   {
00035   public:
00036     struct connected_component
00037     {
00038     public:
00039       connected_component(int index = -1);
00040 
00042       int index;
00045       bdd condition;
00046 
00047       std::list<const state*> rem;
00048     };
00049 
00051     void push(int index);
00052 
00054     connected_component& top();
00055 
00057     const connected_component& top() const;
00058 
00060     void pop();
00061 
00063     size_t size() const;
00064 
00066     std::list<const state*>& rem();
00067 
00071     unsigned clear_rem();
00072 
00074     bool empty() const;
00075 
00076     typedef std::list<connected_component> stack_type;
00077     stack_type s;
00078   };
00079 }
00080 
00081 #endif // SPOT_TGBAALGOS_GTEC_SCCSTACK_HH

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