1 | use std::pin::Pin; |
2 | use std::future::Future; |
3 | |
4 | use crate::io::{self, Seek, SeekFrom}; |
5 | use crate::task::{Context, Poll}; |
6 | |
7 | #[doc (hidden)] |
8 | #[allow (missing_debug_implementations)] |
9 | pub struct SeekFuture<'a, T: Unpin + ?Sized> { |
10 | pub(crate) seeker: &'a mut T, |
11 | pub(crate) pos: SeekFrom, |
12 | } |
13 | |
14 | impl<T: Seek + Unpin + ?Sized> Future for SeekFuture<'_, T> { |
15 | type Output = io::Result<u64>; |
16 | |
17 | fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> { |
18 | let pos: SeekFrom = self.pos; |
19 | Pin::new(&mut *self.seeker).poll_seek(cx, pos) |
20 | } |
21 | } |
22 | |