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tgbaalgos/gtec/sccstack.hh

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00001 // Copyright (C) 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_GTEC_SCCSTACK_HH
00023 # define SPOT_TGBAALGOS_GTEC_SCCSTACK_HH
00024 
00025 #include <stack>
00026 #include <bdd.h>
00027 
00028 namespace spot
00029 {
00030   // A stack of Strongly-Connected Components, as needed by the
00031   // Tarjan-Couvreur algorithm.
00032   class scc_stack
00033   {
00034   public:
00035     struct connected_component
00036     {
00037     public:
00038       connected_component(int index = -1);
00039 
00041       int index;
00044       bdd condition;
00045     };
00046 
00048     void push(int index);
00049 
00051     connected_component& top();
00052 
00054     void pop();
00055 
00057     size_t size() const;
00058 
00060     bool empty() const;
00061 
00062     typedef std::stack<connected_component> stack_type;
00063     stack_type s;
00064   };
00065 }
00066 
00067 #endif // SPOT_TGBAALGOS_GTEC_SCCSTACK_HH

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