Algorithm.h

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/***********************************************************************************\
* (c) Copyright 1998-2019 CERN for the benefit of the LHCb and ATLAS collaborations *
*                                                                                   *
* This software is distributed under the terms of the Apache version 2 licence,     *
* copied verbatim in the file "LICENSE".                                            *
*                                                                                   *
* In applying this licence, CERN does not waive the privileges and immunities       *
* granted to it by virtue of its status as an Intergovernmental Organization        *
* or submit itself to any jurisdiction.                                             *
\***********************************************************************************/
#pragma once
#include <Gaudi/Algorithm.h>
#include <GaudiKernel/ThreadLocalContext.h>
 
namespace Gaudi {
  namespace details {
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Woverloaded-virtual"
    class LegacyAlgorithmAdapter : public Gaudi::Algorithm {
    public:
      LegacyAlgorithmAdapter( std::string name, ISvcLocator* svcloc, std::string version = PACKAGE_VERSION )
          : Gaudi::Algorithm( std::move( name ), svcloc, std::move( version ) ) {
        // default cardinality for non-reentrant algorithms
        setProperty( "Cardinality", 1 ).ignore();
      }
 
      virtual StatusCode execute() = 0;
 
      const EventContext& getContext() const { return Gaudi::Hive::currentContext(); }

      bool isExecuted() const;

      void setExecuted( bool state ) const;

      bool filterPassed() const;

      void setFilterPassed( bool state ) const;
 
    protected:
      bool isReEntrant() const override { return false; }
 
    private:
      StatusCode execute( const EventContext& ) const override final {
        return const_cast<LegacyAlgorithmAdapter*>( this )->execute();
      }
    };
#pragma GCC diagnostic pop
  } // namespace details
} // namespace Gaudi
 
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Woverloaded-virtual"
class Algorithm : public Gaudi::details::LegacyAlgorithmAdapter {
public:
  using Gaudi::details::LegacyAlgorithmAdapter::LegacyAlgorithmAdapter;
  // this is to explicitly hide the other signature of `execute`
  StatusCode execute() override = 0;
};
#pragma GCC diagnostic pop