word.hh

// -*- coding: utf-8 -*-
// Copyright (C) by the Spot authors, see the AUTHORS file for details.
//
// 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/>.
 
#pragma once
 
#include <spot/twaalgos/emptiness.hh>
 
namespace spot
{
  struct SPOT_API twa_word final
  {
    twa_word(const bdd_dict_ptr& dict) noexcept;
    twa_word(const twa_run_ptr& run) noexcept;
    ~twa_word()
    {
      dict_->unregister_all_my_variables(this);
    }
 
    void simplify();
 
    void use_all_aps(bdd aps, bool positive = false);
 
    typedef std::list<bdd> seq_t;
    seq_t prefix;
    seq_t cycle;
 
    bdd_dict_ptr get_dict() const
    {
      return dict_;
    }
 
    twa_graph_ptr as_automaton() const;
 
    bool intersects(const_twa_ptr aut) const
    {
      return as_automaton()->intersects(aut);
    }
 
    SPOT_API
    friend std::ostream& operator<<(std::ostream& os, const twa_word& w);
  private:
    bdd_dict_ptr dict_;
  };
 
  inline twa_word_ptr make_twa_word(const bdd_dict_ptr& dict)
  {
    return std::make_shared<twa_word>(dict);
  }
 
  inline twa_word_ptr make_twa_word(const twa_run_ptr& run)
  {
    return std::make_shared<twa_word>(run);
  }
 
  SPOT_API
  twa_word_ptr parse_word(const std::string& word, const bdd_dict_ptr& dict);
}