048a5825de
virtual destructors. * src/tgba/tgbabddfactory.hh (tgba_bdd_factory): Likewise. * src/misc/hash.hh: Use the std namespace only with GCC 3.0, not with all compiler versions with minor version 0. * src/tgba/tgbatba.cc (tgba_tba_proxy_succ_iterator): Fix friend declaration of ::spot::tgba_tba_proxy.
74 lines
2.4 KiB
C++
74 lines
2.4 KiB
C++
// Copyright (C) 2003, 2004, 2005 Laboratoire d'Informatique de Paris 6 (LIP6),
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// département Systèmes Répartis Coopératifs (SRC), Université Pierre
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// 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/visitor.hh
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/// \brief LTL visitor interface
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#ifndef SPOT_LTLAST_VISITOR_HH
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# define SPOT_LTLAST_VISITOR_HH
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#include "predecl.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 Formula visitor that can modify the formula.
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/// \ingroup ltl_essential
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///
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/// Writing visitors is the prefered way
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/// to traverse a formula, since it doesn't
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/// involve any cast.
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///
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/// If you do not need to modify the visited formula, inherit from
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/// spot::ltl:const_visitor instead.
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struct visitor
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{
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virtual ~visitor() {}
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virtual void visit(atomic_prop* node) = 0;
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virtual void visit(constant* node) = 0;
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virtual void visit(binop* node) = 0;
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virtual void visit(unop* node) = 0;
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virtual void visit(multop* node) = 0;
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};
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/// \brief Formula visitor that cannot modify the formula.
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///
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/// Writing visitors is the prefered way
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/// to traverse a formula, since it doesn't
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/// involve any cast.
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///
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/// If you want to modify the visited formula, inherit from
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/// spot::ltl:visitor instead.
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struct const_visitor
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{
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virtual ~const_visitor() {}
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virtual void visit(const atomic_prop* node) = 0;
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virtual void visit(const constant* node) = 0;
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virtual void visit(const binop* node) = 0;
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virtual void visit(const unop* node) = 0;
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virtual void visit(const multop* node) = 0;
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};
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}
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}
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#endif // SPOT_LTLAST_VISITOR_HH
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