TPreserveGDirectory.h

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#ifndef TPRESERVEGDIRECTORY_H
#define TPRESERVEGDIRECTORY_H
 
#include "TDirectory.h"
 
class TPreserveGDirectory {
public:
   TPreserveGDirectory() = default;
   ~TPreserveGDirectory() { bak->cd(); }
 
   TPreserveGDirectory(const TPreserveGDirectory&)            = delete;
   TPreserveGDirectory(TPreserveGDirectory&&)                 = delete;
   TPreserveGDirectory& operator=(const TPreserveGDirectory&) = delete;
   TPreserveGDirectory& operator=(TPreserveGDirectory&&)      = delete;
 
private:
   TDirectory* bak{gDirectory};
};
 
#endif /* _TPRESERVEGDIRECTORY_H_ */