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ltlast/unop.hh

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00001 // Copyright (C) 2003  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_LTLAST_UNOP_HH
00023 # define SPOT_LTLAST_UNOP_HH
00024 
00025 #include <map>
00026 #include "refformula.hh"
00027 
00028 namespace spot
00029 {
00030   namespace ltl
00031   {
00032 
00034     class unop : public ref_formula
00035     {
00036     public:
00037       enum type { Not, X, F, G };
00038 
00041       static unop* instance(type op, formula* child);
00042 
00043       virtual void accept(visitor& v);
00044       virtual void accept(const_visitor& v) const;
00045 
00047       const formula* child() const;
00049       formula* child();
00050 
00052       type op() const;
00054       const char* op_name() const;
00055 
00057       static unsigned instance_count();
00058 
00059     protected:
00060       typedef std::pair<type, formula*> pair;
00061       typedef std::map<pair, formula*> map;
00062       static map instances;
00063 
00064       unop(type op, formula* child);
00065       virtual ~unop();
00066 
00067     private:
00068       type op_;
00069       formula* child_;
00070     };
00071 
00072   }
00073 }
00074 
00075 #endif // SPOT_LTLAST_UNOP_HH

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