GenWeightDeclaration.h

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef XAOD_ANALYSIS
 
#ifndef EVGENPRODTOOLS_GENWEIGHTDECLARATION_H
#define EVGENPRODTOOLS_GENWEIGHTDECLARATION_H
 
#include "GaudiKernel/INamedInterface.h"
#include "AthenaKernel/ICutFlowSvc.h"
#include "GenInterfaces/IHepMCWeightSvc.h"
#include "GeneratorModules/GenBase.h"
#include "GaudiKernel/ServiceHandle.h"
 
class CutFlowSvc;

class GenWeightDeclaration : public GenBase {
public:
  GenWeightDeclaration(const std::string& name, ISvcLocator* svcLoc);
 
  virtual StatusCode initialize() override;
  virtual StatusCode execute(const EventContext& ctx) override;
 
private:
  ServiceHandle<ICutFlowSvc> m_cutFlowSvc{
    this, "CutFlowSvc", "CutFlowSvc/CutFlowSvc",
    "Cut-flow service"};
 
  // The CutFlowSvc implementation, used to call the 
  // setNumberOfWeightVariations method
  CutFlowSvc* m_cutFlowSvcImpl{nullptr};
 
  ServiceHandle<IHepMCWeightSvc> m_hepMCWeightSvc{
    this, "HepMCWeightSvc", "HepMCWeightSvc/HepMCWeightSvc",
    "Service receiving the generator weight names"};
 
  // Indicates whether the weights have been declared to the CutFlowSvc
  bool m_weightsDeclared{false};
};
 
#endif
 
#endif