spot/src/tgba/tgbatba.hh
Alexandre Duret-Lutz 2cd298e4b0 * src/tgba/bdddict.hh, src/tgba/state.hh, src/tgba/statebdd.hh,
src/tgba/succiter.hh, src/tgba/succiterconcrete.hh,
src/tgba/tgba.hh, src/tgba/tgbabddconcrete.hh,
src/tgba/tgbabddconcreteproduct.hh, src/tgba/tgbaexplicit.hh,
src/tgba/tgbaproduct.hh, src/tgba/tgbareduc.hh,
src/tgba/tgbatba.hh, src/tgbaalgos/emptiness.hh,
src/tgbaalgos/magic.hh, src/tgbaalgos/replayrun.hh,
src/tgbaalgos/gtec/gtec.hh, iface/gspn/ssp.hh: Introduce Doxygen
groups in the documentation.  Presently this only covers the
tgba/ directory, and the emptiness-check algorithms.
* doc/Doxyfile.in (EXCLUDE_PATTERNS): Skip Bison-generated files
in src/evtgbaparse/.
2004-11-16 23:47:50 +00:00

121 lines
4.2 KiB
C++

// Copyright (C) 2003, 2004 Laboratoire d'Informatique de Paris 6 (LIP6),
// département Systèmes Répartis Coopératifs (SRC), Université Pierre
// et Marie Curie.
//
// This file is part of Spot, a model checking library.
//
// Spot is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// Spot is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
// License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Spot; see the file COPYING. If not, write to the Free
// Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
// 02111-1307, USA.
#ifndef SPOT_TGBA_TGBATBA_HH
# define SPOT_TGBA_TGBATBA_HH
#include <list>
#include "tgba.hh"
#include "misc/bddlt.hh"
namespace spot
{
/// \brief Degeneralize a spot::tgba on the fly, producing a TBA.
/// \ingroup tgba_on_the_fly_algorithms
///
/// This class acts as a proxy in front of a spot::tgba, that should
/// be degeneralized on the fly. The result is still a spot::tgba,
/// but it will always have exactly one acceptance condition so
/// it could be called TBA (without the G).
///
/// The degeneralization is done by synchronizing the input
/// automaton with a "counter" automaton such as the one shown in
/// "On-the-fly Verification of Linear Temporal Logic" (Jean-Michel
/// Couveur, FME99).
///
/// If the input automaton uses N acceptance conditions, the output
/// automaton can have at most max(N,1) times more states and
/// transitions.
///
/// \see tgba_sba_proxy
class tgba_tba_proxy : public tgba
{
public:
tgba_tba_proxy(const tgba* a);
virtual ~tgba_tba_proxy();
virtual state* get_init_state() const;
virtual tgba_succ_iterator*
succ_iter(const state* local_state,
const state* global_state = 0,
const tgba* global_automaton = 0) const;
virtual bdd_dict* get_dict() const;
virtual std::string format_state(const state* state) const;
virtual state* project_state(const state* s, const tgba* t) const;
virtual std::string
transition_annotation(const tgba_succ_iterator* t) const;
virtual bdd all_acceptance_conditions() const;
virtual bdd neg_acceptance_conditions() const;
typedef std::list<bdd> cycle_list;
protected:
virtual bdd compute_support_conditions(const state* state) const;
virtual bdd compute_support_variables(const state* state) const;
cycle_list acc_cycle_;
private:
const tgba* a_;
bdd the_acceptance_cond_;
// Disallow copy.
tgba_tba_proxy(const tgba_tba_proxy&);
tgba_tba_proxy& tgba_tba_proxy::operator=(const tgba_tba_proxy&);
};
/// \brief Degeneralize a spot::tgba on the fly, producing an SBA.
/// \ingroup tgba_on_the_fly_algorithms
///
/// This class acts as a proxy in front of a spot::tgba, that should
/// be degeneralized on the fly.
///
/// This is similar to tgba_tba_proxy, except that automata produced
/// with this algorithms can also been see as State-based Büchi
/// Automata (SBA). See tgba_sba_proxy::state_is_accepting(). (An
/// SBA is a TBA, and a TBA is a TGBA.)
///
/// This extra property has a small cost in size: if the input
/// automaton uses N acceptance conditions, the output automaton can
/// have at most max(N,1)+1 times more states and transitions.
/// (This is only max(N,1) for tgba_tba_proxy.)
class tgba_sba_proxy : public tgba_tba_proxy
{
public:
tgba_sba_proxy(const tgba* a);
/// \brief Whether the state is accepting.
///
/// A particularity of a spot::tgba_sba_proxy automaton is that
/// when a state has an outgoing accepting arc, all its outgoing
/// arcs are accepting. The state itself can therefore be
/// considered accepting. This is useful in algorithms working on
/// degeneralized automata with state acceptance conditions.
bool state_is_accepting(const state* state) const;
};
}
#endif // SPOT_TGBA_TGBATBA_HH