957ba664b7
They are too slow. * src/ltlast/formula.hh (opkind, kind, kind_): Use an enum to indicate the actual kind of the formula. This way we can check the kind of a formula without relying on dynamic_cast. * src/ltlast/atomic_prop.cc, src/ltlast/automatop.cc, src/ltlast/binop.cc, src/ltlast/bunop.cc, src/ltlast/constant.cc, src/ltlast/multop.cc, src/ltlast/refformula.cc, src/ltlast/refformula.hh, src/ltlast/unop.cc: Adjust constructors. * src/ltlvisit/basicreduce.cc, src/ltlvisit/mark.cc, src/ltlvisit/reduce.cc, src/ltlvisit/syntimpl.cc, src/ltlvisit/tostring.cc: Replace all dynamic_cast by a call to kind() followed by a static_cast.
54 lines
1.6 KiB
C++
54 lines
1.6 KiB
C++
// Copyright (C) 2010 Laboratoire de Recherche de Developpement de
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// l'EPITA (LRDE).
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// Copyright (C) 2003, 2004, 2005 Laboratoire d'Informatique de Paris
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// 6 (LIP6), département Systèmes Répartis Coopératifs (SRC),
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// Université Pierre et Marie Curie.
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//
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// This file is part of Spot, a model checking library.
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//
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// Spot is free software; you can redistribute it and/or modify it
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// under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// Spot is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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// License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Spot; see the file COPYING. If not, write to the Free
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// Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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// 02111-1307, USA.
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/// \file ltlast/refformula.hh
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/// \brief Reference-counted LTL formulae
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#ifndef SPOT_LTLAST_REFFORMULA_HH
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# define SPOT_LTLAST_REFFORMULA_HH
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#include "formula.hh"
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namespace spot
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{
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namespace ltl
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{
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/// \brief A reference-counted LTL formula.
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/// \ingroup ltl_ast
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class ref_formula : public formula
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{
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protected:
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virtual ~ref_formula();
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ref_formula(opkind k);
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void ref_();
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bool unref_();
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/// Number of references to this formula.
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unsigned ref_count_();
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private:
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unsigned ref_counter_;
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};
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}
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}
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#endif // SPOT_LTLAST_REFFORMULA_HH
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