spot/src/tgba/formula2bdd.hh

// -*- coding: utf-8 -*-
// Copyright (C) 2012, 2013 Laboratoire de Recherche et Développement de
// l'Epita (LRDE).
// Copyright (C) 2003  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 3 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 this program.  If not, see <http://www.gnu.org/licenses/>.

#ifndef SPOT_TGBA_FORMULA2BDD_HH
# define SPOT_TGBA_FORMULA2BDD_HH

# include "bdddict.hh"

namespace spot
{
  /// \brief Convert a Boolean formula into a BDD.
  ///
  /// Convert the Boolean formula \a f into a BDD, using existing
  /// variables from \a d, and registering new ones as necessary.  \a
  /// for_me, the address of the user of these BDD variables will be
  /// passed to \a d when registering the variables.
  ///
  /// If you only use the BDD representation temporarily, for instance
  /// passing it right away to bdd_to_formula(), you should not forget
  /// to unregister the variables that have been registered for \a
  /// for_me.  See bdd_dict::unregister_all_my_variables().
  SPOT_API bdd
  formula_to_bdd(const ltl::formula* f, bdd_dict_ptr d, void* for_me);

  /// \brief Convert a BDD into a formula.
  ///
  /// Format the BDD as an irredundant sum of product (see the
  /// minato_isop class for details) and map the BDD variables back
  /// into their atomic propositions.  This works only for Boolean
  /// formulas, and all the BDD variables used in \a f should have
  /// been registered in \a d.  Although the result has type
  /// ltl::formula*, it obviously does not use any temporal operator.
  SPOT_API const
  ltl::formula* bdd_to_formula(bdd f, const bdd_dict_ptr d);
}

#endif // SPOT_TGBA_FORMULA2BDD_HH