HepRndmGenerator.h

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//====================================================================
//  CLHEP Random Generator definition file
//--------------------------------------------------------------------
//
//  Package    : HepRndm ( The LHCb Offline System)
//  Author     : M.Frank
//  History    :
// +---------+----------------------------------------------+---------
// |    Date |                 Comment                      | Who
// +---------+----------------------------------------------+---------
// | 29/10/99| Initial version                              | MF
// +---------+----------------------------------------------+---------
//
//====================================================================
#ifndef HEPRNDM_HEPRNDMGENERATOR_H
#define HEPRNDM_HEPRNDMGENERATOR_H 1

// Framework include files
#include "RndmGen.h"
#include "RndmGenSvc.h"

#include "HepRndmBaseEngine.h"

namespace HepRndm
{

  template <class TYPE>
  class Generator : public RndmGen
  {
  public:
    typedef TYPE Parameters;

  protected:
    CLHEP::HepRandomEngine* m_hepEngine = nullptr;
    TYPE* m_specs                       = nullptr;

  public:
    Generator( IInterface* engine ) : RndmGen( engine ) {}
    ~Generator() override = default;
    StatusCode initialize( const IRndmGen::Param& par ) override;
    double shoot() const override;
  };

  template <class TYPE>
  StatusCode Generator<TYPE>::initialize( const IRndmGen::Param& par )
  {
    StatusCode status = RndmGen::initialize( par );
    if ( status.isSuccess() ) {
      try {
        m_specs = dynamic_cast<TYPE*>( m_params.get() );
        if ( m_specs ) {
          BaseEngine* engine = dynamic_cast<BaseEngine*>( m_engine.get() );
          if ( engine ) {
            m_hepEngine = engine->hepEngine();
            if ( m_hepEngine ) {
              return StatusCode::SUCCESS;
            }
          }
        }
      } catch ( ... ) {
      }
    }
    return StatusCode::FAILURE;
  }
}

#endif // HEPRNDM_HEPRNDMGENERATOR_H