EventGenerator.h

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//____________________________________________________________________________
/*!

\class   genie::EventGenerator

\brief   Encapsulates a full ordered list of (is the aggregate of) concrete
         EventGeneratorI implementations that must act on the EventRecord
         to generate an event. Each of these implementations corresponds to
         a single processing step.

         Is a concrete implementation of the EventGeneratorI interface.

\author  Costas Andreopoulos <constantinos.andreopoulos \at cern.ch>
 University of Liverpool & STFC Rutherford Appleton Laboratory

\created October 03, 2004

\cpright Copyright (c) 2003-2020, The GENIE Collaboration
         For the full text of the license visit http://copyright.genie-mc.org         
*/
//____________________________________________________________________________

#ifndef _EVENT_GENERATOR_H_
#define _EVENT_GENERATOR_H_

#include <vector>

#include "Framework/EventGen/EventGeneratorI.h"
#include "Framework/GHEP/GHepRecordHistory.h"

class TStopwatch;
class TBits;

using std::vector;

namespace genie {

class EventGenerator: public EventGeneratorI {

public :
  EventGenerator();
  EventGenerator(string config);
  ~EventGenerator();

  //-- implement the original EventRecordVisitorI interface
  void ProcessEventRecord(GHepRecord * event_rec) const;

  //-- implement the extensions to the EventRecordVisitorI interface
  const GVldContext &               ValidityContext  (void) const;
  const InteractionListGeneratorI * IntListGenerator (void) const;
  const XSecAlgorithmI *            CrossSectionAlg  (void) const;

  //-- override the Algorithm::Configure methods to load configuration
  //   data to private data members
  void Configure (const Registry & config);
  void Configure (string param_set);

private:

  void Init       (void);
  void LoadConfig (void);

  //-- private data members
  vector<const EventRecordVisitorI *> * fEVGModuleVec;   ///< list of modules
  vector<double> *                      fEVGTime;        ///< module timing info
  const XSecAlgorithmI *                fXSecModel;      ///< xsec model for events handled by thread
  const InteractionListGeneratorI *     fIntListGen;     ///< generates list of handled interactions
  GVldContext *                         fVldContext;     ///< validity context
  TStopwatch *                          fWatch;          ///< stopwatch for module timing
  TBits *                               fFiltUnphysMask; ///< mask for allowing unphysical events to pass through (if requested)
  mutable GHepRecordHistory             fRecHistory;     ///< event record history
};

}      // genie namespace

#endif // _EVENT_GENERATOR_H_