HerwigLHEWriterModule.h

/**************************************************************************
 * basf2 (Belle II Analysis Software Framework)                           *
 * Author: The Belle II Collaboration                                     *
 *                                                                        *
 * See git log for contributors and copyright holders.                    *
 * This file is licensed under LGPL-3.0, see LICENSE.md.                  *
 **************************************************************************/
 
#pragma once
 
#include <framework/core/Module.h>
#include <mdst/dataobjects/MCParticle.h>
 
#include <fstream>
#include <string>
#include <map>
 
namespace Belle2 {

  class HerwigLHEWriterModule : public Module {
 
  public:
    HerwigLHEWriterModule();
    virtual ~HerwigLHEWriterModule();

    virtual void initialize() override;
    virtual void terminate() override;
    virtual void event() override;
 
  private:
    struct EventRecord {
      std::string sidecarFile; 
    };
 
    // Steerable module parameters
    std::string m_workDir{};          
    double m_showerScale{11.0};       
 
    // Non-steerable internal state
    std::string m_workingDir{};       
    std::ofstream m_lheStream;        
    std::map<int, EventRecord> m_manifest; 
    unsigned int m_batchSeed{0};      
    int m_eventCounter{0};            

    bool writeLHEEventBlock(const std::vector<MCParticle*>& quarks);

    bool writeKKMCSidecar(int globalEvtNum);
  };

} // namespace Belle2