NormalizationHelpers.h

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/*
 * Project: RooFit
 * Authors:
 *   Jonas Rembser, CERN 2022
 *
 * Copyright (c) 2022, CERN
 *
 * Redistribution and use in source and binary forms,
 * with or without modification, are permitted according to the terms
 * listed in LICENSE (http://roofit.sourceforge.net/license.txt)
 */
 
#ifndef RooFit_NormalizationHelpers_h
#define RooFit_NormalizationHelpers_h
 
#include <RooArgSet.h>
#include <RooFit/Detail/DataMap.h>
 
#include <memory>
#include <unordered_map>
#include <vector>
 
class RooAbsArg;
 
namespace RooFit {
 
class NormalizationIntegralUnfolder {
public:
   NormalizationIntegralUnfolder(RooAbsArg const &topNode, RooArgSet const &normSet);
   ~NormalizationIntegralUnfolder();
 
   inline RooAbsArg &arg() const { return *_arg; }
 
private:
   std::unique_ptr<RooAbsArg> _topNodeWrapper;
   RooAbsArg *_arg = nullptr;
   std::unordered_map<RooFit::Detail::DataKey, RooArgSet *> _normSets;
   RooArgSet _replacedArgs;
   bool _normSetWasEmpty;
};
 
} // namespace RooFit
 
#endif