5817a3c11b
* src/tgbaalgos/translate.cc, src/tgbaalgos/translate.hh: Remove const qualifier in translator::run return type.
131 lines
3.7 KiB
C++
131 lines
3.7 KiB
C++
// -*- coding: utf-8 -*-
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// Copyright (C) 2013, 2014 Laboratoire de Recherche et Développement
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// de l'Epita (LRDE).
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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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#ifndef SPOT_TGBAALGOS_TRANSLATE_HH
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# define SPOT_TGBAALGOS_TRANSLATE_HH
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#include "postproc.hh"
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#include "ltlvisit/simplify.hh"
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namespace spot
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{
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/// \ingroup tgba_ltl
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/// \brief Translate an LTL formula into an optimized spot::tgba.
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///
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/// This class implements a three-step translation:
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/// - syntactic simplification of the formula
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/// - translation of the formula into TGBA
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/// - postprocessing of the resulting TGBA to minimize it, or
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/// turn it into the required form.
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///
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/// Method set_type() may be used to specify the type of
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/// automaton produced (TGBA, BA, Monitor). The default is TGBA.
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///
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/// Method set_pref() may be used to specify whether small automata
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/// should be prefered over deterministic automata.
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///
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/// Method set_level() may be used to specify the optimization level.
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///
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/// The semantic of these three methods is inherited from the
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/// spot::postprocessor class, but the optimization level is
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/// additionally used to select which LTL simplifications to enable.
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class SPOT_API translator: protected postprocessor
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{
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public:
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translator(ltl::ltl_simplifier* simpl, const option_map* opt = 0)
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: postprocessor(opt), simpl_(simpl), simpl_owned_(0)
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{
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assert(simpl);
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setup_opt(opt);
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}
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translator(const bdd_dict_ptr& dict, const option_map* opt = 0)
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: postprocessor(opt)
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{
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build_simplifier(dict);
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setup_opt(opt);
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}
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translator(const option_map* opt = 0)
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: postprocessor(opt)
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{
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build_simplifier(make_bdd_dict());
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setup_opt(opt);
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}
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~translator()
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{
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// simpl_owned_ is 0 if simpl_ was supplied to the constructor.
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delete simpl_owned_;
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}
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typedef postprocessor::output_type output_type;
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void
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set_type(output_type type)
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{
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this->postprocessor::set_type(type);
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}
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typedef postprocessor::output_pref output_pref;
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void
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set_pref(output_pref pref)
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{
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this->postprocessor::set_pref(pref);
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}
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typedef postprocessor::optimization_level optimization_level;
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void
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set_level(optimization_level level)
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{
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level_ = level;
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}
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/// \brief Convert \a f into an automaton.
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///
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/// The formula \a f is simplified internally, but it is not
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/// not destroyed (this is the responsibility of the caller).
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tgba_digraph_ptr run(const ltl::formula* f);
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/// \brief Convert \a f into an automaton, and update f.
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///
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/// The formula <code>*f</code> is destroyed, and replaced
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/// by the simplified version, which should be destroyed by
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/// the caller.
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tgba_digraph_ptr run(const ltl::formula** f);
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protected:
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void setup_opt(const option_map* opt);
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void build_simplifier(const bdd_dict_ptr& dict);
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private:
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ltl::ltl_simplifier* simpl_;
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ltl::ltl_simplifier* simpl_owned_;
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int comp_susp_;
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int early_susp_;
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int skel_wdba_;
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int skel_simul_;
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};
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/// @}
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}
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#endif // SPOT_TGBAALGOS_TRANSLATE_HH
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