JaggedVecConstAccessor.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_JAGGEDVECCONSTACCESSOR_H
#define ATHCONTAINERS_JAGGEDVECCONSTACCESSOR_H
 
 
#include "AthContainersInterfaces/AuxTypes.h"
#include "AthContainers/JaggedVecImpl.h"
#include "AthContainers/tools/JaggedVecVectorFactory.h"
#include "AthContainers/ConstAccessor.h"
#include "AthContainers/AuxElement.h"
#include "AthContainers/tools/AuxDataTraits.h"
#include "AthContainers/tools/AuxElementConcepts.h"
#include "AthContainers/tools/LinkedVarAccessorBase.h"
#include "AthContainers/tools/JaggedVecConversions.h"
#include "CxxUtils/range_with_at.h"
#include "CxxUtils/range_with_conv.h"
#include <iterator>
 
 
namespace SG {
 
 
template <class PAYLOAD_T, class ALLOC>
class ConstAccessor<SG::JaggedVecElt<PAYLOAD_T>, ALLOC>
  : public detail::LinkedVarAccessorBase
{
public:
  using Payload_t = PAYLOAD_T;
 
  using PayloadAlloc_t = typename std::allocator_traits<ALLOC>::template rebind_alloc<Payload_t>;
 
  using Elt_t = SG::JaggedVecElt<Payload_t>;
 
  using ConstConverter_t = detail::JaggedVecConstConverter<Payload_t>;
 
  using element_type = typename ConstConverter_t::element_type;
 
  using const_reference_type = element_type;
 
  using const_container_pointer_type = void;
 
 
  using const_Elt_span = typename AuxDataTraits<Elt_t, ALLOC>::const_span;
  using const_Payload_span = typename AuxDataTraits<Payload_t>::const_span;
 
 
  using const_span =
    CxxUtils::transform_view_with_at<const_Elt_span, ConstConverter_t>;
 
 
  ConstAccessor (const std::string& name);
 
 
  ConstAccessor (const std::string& name, const std::string& clsname);
 
 
  ConstAccessor (const SG::auxid_t auxid);
 
 
  template <IsConstAuxElement ELT>
  const element_type operator() (const ELT& e) const;
 
 
  const element_type
  operator() (const AuxVectorData& container, size_t index) const;
 
 
  const Elt_t*
  getEltArray (const AuxVectorData& container) const;
 
 
  const Payload_t*
  getPayloadArray (const AuxVectorData& container) const;
 
 
  const_Elt_span
  getEltSpan (const AuxVectorData& container) const;
 
 
  const_Payload_span
  getPayloadSpan (const AuxVectorData& container) const;
 
 
  const_span
  getDataSpan (const AuxVectorData& container) const;
 
 
protected:
  ConstAccessor (const std::string& name,
                 const std::string& clsname,
                 const SG::AuxVarFlags flags);
 
  ConstAccessor (const detail::LinkedVarAccessorBase& b);
};
 
 
} // namespace SG
 
 
#include "AthContainers/JaggedVecConstAccessor.icc"
 
 
#endif // not ATHCONTAINERS_JAGGEDVECCONSTACCESSOR_H