include/EvtGenBase/EvtModel.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 EVTMODEL_HH
0022 #define EVTMODEL_HH
0023
0024 #include "EvtGenBase/EvtDecayBase.hh"
0025 #include "EvtGenBase/EvtStringHash.hh"
0026
0027 #include <map>
0028 //#include <fstream.h>
0029
0030 //Class to read in and handle the decays available
0031 //to EvtGen for each particle, and the model to be
0032 //used for each one.
0033
0034 class EvtModel {
0035   public:
0036     static EvtModel& instance();
0037
0038     void registerModel( EvtDecayBase* prototype );
0039
0040     int isModel( std::string name );
0041
0042     EvtDecayBase* getFcn( std::string model_name );
0043
0044     int isCommand( std::string cmd );
0045     void storeCommand( std::string cmd, std::string cnfgstr );
0046
0047   private:
0048     EvtModel();
0049
0050     static EvtModel* _instance;
0051
0052     std::map<std::string, EvtDecayBase*> _modelNameHash;
0053     std::map<std::string, EvtDecayBase*> _commandNameHash;
0054 };
0055
0056 inline EvtModel& EvtModel::instance()
0057 {
0058     if ( _instance == 0 )
0059         _instance = new EvtModel;
0060     return *_instance;
0061 }
0062
0063 #endif