include/GaudiCommonSvc/HistogramUtility.h

0001 /***********************************************************************************\
0002 * (c) Copyright 1998-2019 CERN for the benefit of the LHCb and ATLAS collaborations *
0003 *                                                                                   *
0004 * This software is distributed under the terms of the Apache version 2 licence,     *
0005 * copied verbatim in the file "LICENSE".                                            *
0006 *                                                                                   *
0007 * In applying this licence, CERN does not waive the privileges and immunities       *
0008 * granted to it by virtue of its status as an Intergovernmental Organization        *
0009 * or submit itself to any jurisdiction.                                             *
0010 \***********************************************************************************/
0011 #ifndef GAUDICOMMONSVC_HISTOGRAMUTILITY_H
0012 #define GAUDICOMMONSVC_HISTOGRAMUTILITY_H 1
0013
0014 #include "GaudiKernel/HistogramBase.h"
0015
0016 namespace Gaudi {
0017   template <class Q, class T>
0018   T* getRepresentation( const Q& hist ) {
0019     auto p = dynamic_cast<const HistogramBase*>( &hist );
0020     return p ? dynamic_cast<T*>( p->representation() ) : nullptr;
0021   }
0022 } // namespace Gaudi
0023
0024 #endif