HistogramBase.h

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* (c) Copyright 1998-2025 CERN for the benefit of the LHCb and ATLAS collaborations *
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* This software is distributed under the terms of the Apache version 2 licence,     *
* copied verbatim in the file "LICENSE".                                            *
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#pragma once
 
#include <GaudiKernel/Kernel.h>
#include <iostream>
 
class TObject;
 
/*
 *    Gaudi namespace declaration
 */
namespace Gaudi {

  class GAUDI_API HistogramBase {
  public:
    virtual TObject* representation() const = 0;
    virtual void adoptRepresentation( TObject* rep ) = 0;
    virtual std::ostream& print( std::ostream& s ) const = 0;
    virtual std::ostream& write( std::ostream& s ) const = 0;
    virtual int write( const char* file_name ) const = 0;
    virtual ~HistogramBase()                         = default;
  }; // class
 
} // namespace Gaudi