// -*- coding: utf-8 -*-
// Copyright (C) 2013, 2014 Laboratoire de Recherche et Développement
// de l'Epita (LRDE).
//
// 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/>.

#include "countstates.hh"
#include "tgba/tgbagraph.hh"
#include "tgbaalgos/stats.hh"

namespace spot
{
  unsigned count_states(const const_tgba_ptr& a)
  {
    if (auto b = std::dynamic_pointer_cast<const tgba_digraph>(a))
      return b->num_states();
    return stats_reachable(a).states;
  }
}