is_complete.hh

Go to the documentation of this file.

// This file is part of Awali.
// Copyright 2016-2022 Sylvain Lombardy, Victor Marsault, Jacques Sakarovitch
//
// Awali is a 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.
//
// This program 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 AWALI_ALGOS_IS_COMPLETE_HH
# define AWALI_ALGOS_IS_COMPLETE_HH
 
# include <queue>
# include <set>
 
namespace awali { namespace sttc {
 
  template <typename Aut>
  bool is_complete(const Aut& aut)
  {
    static_assert(labelset_t_of<Aut>::is_free(),
                  "requires free labelset");
 
    if (aut->num_initials() == 0)
      return false;
 
    using label_set_t = std::set<typename labelset_t_of<Aut>::letter_t>;
 
    const auto& letters = aut->labelset()->genset();
    for (auto state : aut->states())
    {
      label_set_t missing_letters = {std::begin(letters), std::end(letters)};
 
      for (auto tr : aut->all_out(state))
        missing_letters.erase(aut->label_of(tr));
 
      if (!missing_letters.empty())
        return false;
    }
 
    return true;
  }
 
}}//end of ns awali::stc
 
#endif // !AWALI_ALGOS_IS_COMPLETE_HH