ISelectionReadAccessor.h

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/*
  Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
*/

 
 
#ifndef SELECTION_HELPERS__I_SELECTION_READ_ACCESSOR_H
#define SELECTION_HELPERS__I_SELECTION_READ_ACCESSOR_H
 
#include <AthContainers/AuxElement.h>
#include <SelectionHelpers/SelectionHelpers.h>
#include <memory>
 
class StatusCode;
 
namespace CP
{
  class ISystematicsSvc;
  class SystematicSet;
 

 
  class ISelectionReadAccessor
  {
    // no slicing
    ISelectionReadAccessor& operator = (const ISelectionReadAccessor&) = delete;

  public:
    virtual ~ISelectionReadAccessor () noexcept = default;

  public:
    virtual SelectionType
    getBits (const SG::AuxElement& element,
             const CP::SystematicSet *sys = nullptr) const = 0;

  public:
    virtual bool getBool (const SG::AuxElement& element,
                          const CP::SystematicSet *sys = nullptr) const = 0;

  public:
    virtual std::string label () const = 0;

  public:
    virtual bool isBool () const = 0;

  public:
    virtual CP::SystematicSet
    getInputAffecting (const ISystematicsSvc& svc,
                       const std::string& objectName) const = 0;

  public:
    virtual StatusCode
    fillSystematics (const ISystematicsSvc& svc,
                     const std::vector<CP::SystematicSet>& sysList,
                     const std::string& objectName) = 0;
  };
 

  StatusCode
  makeSelectionReadAccessor (const std::string& expr,
                             std::unique_ptr<ISelectionReadAccessor>& accessor,
                             bool defaultToChar = false);

  StatusCode
  makeSelectionReadAccessorVar (const std::string& name,
                                std::unique_ptr<ISelectionReadAccessor>& accessor,
                                bool defaultToChar = false);
}
 
#endif