530 enum ReadFut {  enum
549 impl ReadFut {  implementation
557             ReadFut::Reading(ref mut fut) => fut,  in get_reading_mut()
587     read_fut: ReadFut,
609             read_fut: ReadFut::Idle,  in new()
669             ReadFut::Idle => {  in poll_read()
674                 self.read_fut = ReadFut::Reading(Box::pin(async move {  in poll_read()
682             ReadFut::Reading(ref mut fut) => fut,  in poll_read()
683             ReadFut::RemainingData(ref mut data) => {  in poll_read()
691                     self.read_fut = ReadFut::Idle;  in poll_read()
705                     self.read_fut = ReadFut::Idle;  in poll_read()
709                     self.read_fut = ReadFut::Idle;  in poll_read()
718                         self.read_fut = ReadFut::RemainingData(temp_buf);  in poll_read()
720                         self.read_fut = ReadFut::Idle;  in poll_read()