artis-star/src/artis-star/common/observer/EventIterator.hpp

/**
 * @file common/observer/EventIterator.hpp
 * @author See the AUTHORS file
 */

/*
 * Copyright (C) 2013-2022 ULCO http://www.univ-littoral.fr
 *
 * This program 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.
 *
 * 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 ARTIS_COMMON_OBSERVER_EVENT_ITERATOR_HPP
#define ARTIS_COMMON_OBSERVER_EVENT_ITERATOR_HPP

#include <artis-star/common/observer/Iterator.hpp>

namespace artis::common::observer {

template<typename Time>
struct EventIterator {
  typedef artis::common::observer::Iterator<Time> iterator_type;

  double begin(const std::vector <Iterator<Time>> &its) const { return next_time(0, its); }

  iterator_type build(const typename View<Time>::Values &view) const { return iterator_type(view); }

  bool is_valid(double time, const iterator_type &it) const { return (*it).first == time; }

  double next_time(double /* time */, const std::vector <Iterator<Time>> &its) const {
    double min = std::numeric_limits<double>::max();

    for (const auto &it: its) {
      if (min > (*it).first) {
        min = (*it).first;
      }
    }
    return min;
  }
};

}

#endif