LinkedVarAccessorBase.h

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// This file's extension implies that it's C, but it's really -*- C++ -*-.
/*
 * Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration.
 */
#ifndef ATHCONTAINERS_LINKEDVARACCESSORBASE_H
#define ATHCONTAINERS_LINKEDVARACCESSORBASE_H
 
 
#include "AthContainers/tools/AuxElementConcepts.h"
#include "AthContainersInterfaces/AuxTypes.h"
#include <cstdint>
 
 
namespace SG { namespace detail {
 
 
class LinkedVarAccessorBase
{
public:
  template <class ELT>
  requires (IsConstAuxElement<ELT>)
  bool isAvailable (const ELT& e) const;
 
 
  bool isAvailable (const AuxVectorData& e) const;
 
 
  SG::auxid_t auxid() const;
 
 
  SG::auxid_t linkedAuxid() const;
 
 
protected:
  // Store these as uint32_t rather than auxid_t since we're going to want
  // to be able to create temporary instances of this.
  uint32_t m_linkedAuxid = 0;
 
  uint32_t m_auxid = 0;
};
 
 
} } // namespace SG::detail
 
 
#include "AthContainers/tools/LinkedVarAccessorBase.icc"
 
 
#endif // not ATHCONTAINERS_LINKEDVARACCESSORBASE_H