TDataFrameLibrary.h

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#ifndef TDATAFRAMELIBRARY_H
#define TDATAFRAMELIBRARY_H
#include "RVersion.h"
#if ROOT_VERSION_CODE >= ROOT_VERSION(6, 14, 0)
 
#include <string>
 
#include "TList.h"
 
#include "TSingleton.h"
#include "TGRSIHelper.h"
 
class TDataFrameLibrary : public TSingleton<TDataFrameLibrary> {
public:
   friend class TSingleton<TDataFrameLibrary>;
 
   ~TDataFrameLibrary();
 
   void Load();   ///< if necessary loads shared object library and sets/initializes all other functions
 
   TGRSIHelper* CreateHelper(TList* list)
   {
      /// function to open library specific data parser
      Load();
      return fCreateHelper(list);
   }
   void DestroyHelper(TGRSIHelper* parser)
   {
      /// function to destroy library specific data parser
      Load();
      fDestroyHelper(parser);
   }
 
private:
   TDataFrameLibrary()                                    = default;
   TDataFrameLibrary(const TDataFrameLibrary&)            = default;
   TDataFrameLibrary(TDataFrameLibrary&&)                 = default;
   TDataFrameLibrary& operator=(const TDataFrameLibrary&) = default;
   TDataFrameLibrary& operator=(TDataFrameLibrary&&)      = default;
 
   static void Compile(std::string& path, const size_t& dot, const size_t& slash);
 
   void* fHandle{nullptr};   ///< handle for shared object library
 
   TGRSIHelper* (*fCreateHelper)(TList*);
   void (*fDestroyHelper)(TGRSIHelper*);
 
   /// \cond CLASSIMP
   ClassDefOverride(TDataFrameLibrary, 1)   // NOLINT(readability-else-after-return)
   /// \endcond
};
 
#endif
#endif