/* 
 * File:   State.hpp
 * 
 * Author: ABSEHER Michael (abseher@dbai.tuwien.ac.at)
 * 
 * Copyright 2015-2017, Michael Abseher
 *    E-Mail: <abseher@dbai.tuwien.ac.at>
 * 
 * This file is part of htd.
 * 
 * htd 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.
 * 
 * htd 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 htd.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef HTD_HTD_STATE_HPP
#define HTD_HTD_STATE_HPP

namespace htd
{
    /**
     *  Datatype for states.
     */
    typedef unsigned char state_t;

    /**
     *  Structure containing default values for special states.
     */
    struct State
    {
        public:
            /**
             *  The ID of unknown or undefined states.
             */
            static const htd::state_t UNKNOWN = 0;

        private:
            State(void);
    };
}

#endif /* HTD_HTD_STATE_HPP */
