EvtModel.hh

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* Copyright 1998-2020 CERN for the benefit of the EvtGen authors       *
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* This file is part of EvtGen.                                         *
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#ifndef EVTMODEL_HH
#define EVTMODEL_HH
 
#include "EvtGenBase/EvtDecayBase.hh"
#include "EvtGenBase/EvtStringHash.hh"
 
#include <map>
 
//Class to read in and handle the decays available
//to EvtGen for each particle, and the model to be
//used for each one.
 
class EvtModel {
  public:
    static EvtModel& instance();
 
    void registerModel( EvtDecayBase* prototype );
 
    int isModel( std::string name );
 
    EvtDecayBase* getFcn( std::string model_name );
 
    int isCommand( std::string cmd );
    void storeCommand( std::string cmd, std::string cnfgstr );
 
  private:
    EvtModel();
 
    static thread_local EvtModel* m_instance;
 
    std::map<std::string, EvtDecayBase*> m_modelNameHash;
    std::map<std::string, EvtDecayBase*> m_commandNameHash;
};
 
inline EvtModel& EvtModel::instance()
{
    if ( m_instance == nullptr )
        m_instance = new EvtModel;
    return *m_instance;
}
 
#endif