814ec7c2d0
* src/misc/hash.hh (ptr_hash): Use knuth32_hash. * src/tgba/tgbabddconcretefactory.hh (tgba_bdd_concrete_factory): Use ltl::formula_ptr_hash for acc_map_.
94 lines
3.4 KiB
C++
94 lines
3.4 KiB
C++
// Copyright (C) 2003, 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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#ifndef SPOT_TGBA_TGBABDDCONCRETEFACTORY_HH
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# define SPOT_TGBA_TGBABDDCONCRETEFACTORY_HH
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#include "misc/hash.hh"
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#include "ltlast/formula.hh"
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#include "tgbabddfactory.hh"
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namespace spot
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{
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/// Helper class to build a spot::tgba_bdd_concrete object.
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class tgba_bdd_concrete_factory: public tgba_bdd_factory
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{
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public:
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tgba_bdd_concrete_factory(bdd_dict* dict);
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virtual ~tgba_bdd_concrete_factory();
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/// Create a state variable for formula \a f.
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///
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/// \param f The formula to create a state for.
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/// \return The variable number for this state.
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///
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/// The state is not created if it already exists. Instead its
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/// existing variable number is returned. Variable numbers
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/// can be turned into BDD using ithvar().
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int create_state(const ltl::formula* f);
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/// Create an atomic proposition variable for formula \a f.
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///
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/// \param f The formula to create an aotmic proposition for.
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/// \return The variable number for this state.
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///
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/// The atomic proposition is not created if it already exists.
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/// Instead its existing variable number is returned. Variable numbers
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/// can be turned into BDD using ithvar().
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int create_atomic_prop(const ltl::formula* f);
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/// Declare an acceptance condition.
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///
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/// Formula such as 'f U g' or 'F g' make the promise
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/// that 'g' will be fulfilled eventually. So once
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/// one of this formula has been translated into a BDD,
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/// we use declare_acceptance_condition() to associate
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/// all other states to the acceptance set of 'g'.
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///
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/// \param b a BDD indicating which variables are in the
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/// acceptance set
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/// \param a the formula associated
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void declare_acceptance_condition(bdd b, const ltl::formula* a);
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const tgba_bdd_core_data& get_core_data() const;
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bdd_dict* get_dict() const;
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/// Add a new constraint to the relation.
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void constrain_relation(bdd new_rel);
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/// \brief Perfom final computations before the relation can be used.
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///
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/// This function should be called after all propositions, state,
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/// acceptance conditions, and constraints have been declared, and
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/// before calling get_code_data() or get_dict().
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void finish();
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private:
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tgba_bdd_core_data data_; ///< Core data for the new automata.
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typedef Sgi::hash_map<const ltl::formula*, bdd,
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ltl::formula_ptr_hash> acc_map_;
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acc_map_ acc_; ///< BDD associated to each acceptance condition
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};
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}
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#endif // SPOT_TGBA_TGBABDDCONCRETEFACTORY_HH
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