include/EvtGenBase/EvtAmpIndex.hh

0001
0002 /***********************************************************************
0003 * Copyright 1998-2020 CERN for the benefit of the EvtGen authors       *
0004 *                                                                      *
0005 * This file is part of EvtGen.                                         *
0006 *                                                                      *
0007 * EvtGen is free software: you can redistribute it and/or modify       *
0008 * it under the terms of the GNU General Public License as published by *
0009 * the Free Software Foundation, either version 3 of the License, or    *
0010 * (at your option) any later version.                                  *
0011 *                                                                      *
0012 * EvtGen is distributed in the hope that it will be useful,            *
0013 * but WITHOUT ANY WARRANTY; without even the implied warranty of       *
0014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *
0015 * GNU General Public License for more details.                         *
0016 *                                                                      *
0017 * You should have received a copy of the GNU General Public License    *
0018 * along with EvtGen.  If not, see <https://www.gnu.org/licenses/>.     *
0019 ***********************************************************************/
0020
0021 #ifndef EVTAMPINDEX_HH
0022 #define EVTAMPINDEX_HH
0023
0024 #include <vector>
0025
0026 class EvtAmpIndex {
0027     friend class EvtAmpSubIndex;
0028
0029   public:
0030     EvtAmpIndex( std::vector<int> ind );
0031     virtual ~EvtAmpIndex() {}
0032
0033     void reset();
0034     bool next();
0035
0036     int index();
0037
0038   private:
0039     std::vector<int> _ind;
0040     int _size;
0041     std::vector<int> _state;
0042     std::vector<int> _nstate;
0043 };
0044
0045 #endif