948f99bc4e
* spot/twaalgos/complement.cc, spot/twaalgos/complement.hh (complement): New function. * bin/autfilt.cc, spot/twa/twa.cc, spot/twaalgos/contains.cc, spot/twaalgos/powerset.cc, spot/twaalgos/stutter.cc: Use it. * tests/core/complement.test: Adjust. * NEWS: Mention it.
85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
// -*- coding: utf-8 -*-
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// Copyright (C) 2018, 2019 Laboratoire de Recherche et Développement de
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// l'Epita.
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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 3 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 this program. If not, see <http://www.gnu.org/licenses/>.
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#include "config.h"
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#include <spot/twaalgos/contains.hh>
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#include <spot/twaalgos/complement.hh>
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#include <spot/twaalgos/ltl2tgba_fm.hh>
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#include <spot/twaalgos/isdet.hh>
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namespace spot
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{
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namespace
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{
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static spot::const_twa_graph_ptr
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translate(formula f, const bdd_dict_ptr& dict)
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{
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return ltl_to_tgba_fm(f, dict);
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}
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}
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bool contains(const_twa_graph_ptr left, const_twa_graph_ptr right)
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{
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return !complement(left)->intersects(right);
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}
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bool contains(const_twa_graph_ptr left, formula right)
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{
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return contains(left, translate(right, left->get_dict()));
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}
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bool contains(formula left, const_twa_graph_ptr right)
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{
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return !translate(formula::Not(left), right->get_dict())->intersects(right);
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}
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bool contains(formula left, formula right)
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{
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return contains(left, translate(right, make_bdd_dict()));
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}
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bool are_equivalent(const_twa_graph_ptr left, const_twa_graph_ptr right)
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{
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// Start with a deterministic automaton at right if possible to
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// avoid a determinization (in case the first containment check
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// fails).
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if (!is_deterministic(right))
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std::swap(left, right);
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return contains(left, right) && contains(right, left);
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}
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bool are_equivalent(const_twa_graph_ptr left, formula right)
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{
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// The first containement check does not involve a
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// complementation, the second might.
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return contains(left, right) && contains(right, left);
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}
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bool are_equivalent(formula left, const_twa_graph_ptr right)
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{
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// The first containement check does not involve a
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// complementation, the second might.
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return contains(right, left) && contains(left, right);
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}
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bool are_equivalent(formula left, formula right)
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{
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return contains(right, left) && contains(left, right);
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}
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}
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