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binop.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 
00027 #ifndef SPOT_LTLAST_BINOP_HH
00028 # define SPOT_LTLAST_BINOP_HH
00029 
00030 #include <map>
00031 #include "refformula.hh"
00032 
00033 namespace spot
00034 {
00035   namespace ltl
00036   {
00037 
00040     class binop : public ref_formula
00041     {
00042     public:
00047       enum type { Xor, Implies, Equiv, U, R };
00048 
00051       static binop* instance(type op, formula* first, formula* second);
00052 
00053       virtual void accept(visitor& v);
00054       virtual void accept(const_visitor& v) const;
00055 
00057       const formula* first() const;
00059       formula* first();
00061       const formula* second() const;
00063       formula* second();
00064 
00066       type op() const;
00068       const char* op_name() const;
00069 
00071       static unsigned instance_count();
00072 
00073     protected:
00074       typedef std::pair<formula*, formula*> pairf;
00075       typedef std::pair<type, pairf> pair;
00076       typedef std::map<pair, formula*> map;
00077       static map instances;
00078 
00079       binop(type op, formula* first, formula* second);
00080       virtual ~binop();
00081 
00082     private:
00083       type op_;
00084       formula* first_;
00085       formula* second_;
00086     };
00087 
00088   }
00089 }
00090 
00091 #endif // SPOT_LTLAST_BINOP_HH

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