spot  0.9.2
modgray.hh
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1 // Copyright (C) 2004 Laboratoire d'Informatique de Paris 6 (LIP6),
2 // département Systèmes Répartis Coopératifs (SRC), Université Pierre
3 // et Marie Curie.
4 //
5 // This file is part of Spot, a model checking library.
6 //
7 // Spot is free software; you can redistribute it and/or modify it
8 // under the terms of the GNU General Public License as published by
9 // the Free Software Foundation; either version 2 of the License, or
10 // (at your option) any later version.
11 //
12 // Spot is distributed in the hope that it will be useful, but WITHOUT
13 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 // License for more details.
16 //
17 // You should have received a copy of the GNU General Public License
18 // along with Spot; see the file COPYING. If not, write to the Free
19 // Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
20 // 02111-1307, USA.
21 
22 #ifndef SPOT_MISC_MODGRAY_HH
23 # define SPOT_MISC_MODGRAY_HH
24 
25 namespace spot
26 {
27 
72  {
73  public:
78 
80 
90 
92  virtual void a_first(int j) = 0;
96  virtual void a_next(int j) = 0;
98  virtual bool a_last(int j) const = 0;
100 
103 
107  void first();
108 
113  bool
114  last() const
115  {
116  return f_[0] == n_;
117  }
118 
120  bool
121  done() const
122  {
123  return done_;
124  }
125 
132  int next();
134 
135  protected:
136  int n_;
137  bool done_;
138  int* a_;
139  int* f_;
140  int* m_;
141  int* s_;
143  };
144 
145 } // spot
146 
147 # endif // SPOT_MISC_MODGRAY_HH

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