VariableStruct.h

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// This file's extension implies that it's C, but it's really -*- C++ -*-.
/*
 * Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration.
 */
 
 
#ifndef XAODCORE_VARIABLESTRUCT_H
#define XAODCORE_VARIABLESTRUCT_H
 
 
#include "AthContainers/AuxVectorData.h"
#include "AthContainers/Accessor.h"
 
 
namespace xAOD {
 

class VariableStruct
{
public:
  VariableStruct (SG::AuxVectorData& cont) : m_cont (cont) {}
  SG::AuxVectorData& m_cont;
};
 
 
} // namespace xAOD
 

#define AUXSTORE_VARSTRUCT_VAR(TYPE, NAME)                      \
  static SG::Accessor<TYPE>::span getSpan##NAME(xAOD::VariableStruct& vars) { \
    static const SG::Accessor<TYPE> acc (#NAME);                \
    return acc.getDataSpan (vars.m_cont);                       \
  }                                                             \
  SG::Accessor<TYPE>::span NAME = getSpan##NAME(*this)
 
 
#endif // not XAODCORE_VARIABLESTRUCT_H