tokio_fs/file/
seek.rs

1use super::File;
2
3use futures::{Future, Poll};
4
5use std::io;
6
7/// Future returned by `File::seek`.
8#[derive(Debug)]
9pub struct SeekFuture {
10    inner: Option<File>,
11    pos: io::SeekFrom,
12}
13
14impl SeekFuture {
15    pub(crate) fn new(file: File, pos: io::SeekFrom) -> Self {
16        Self {
17            pos,
18            inner: Some(file),
19        }
20    }
21}
22
23impl Future for SeekFuture {
24    type Item = (File, u64);
25    type Error = io::Error;
26
27    fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
28        let pos = try_ready!(self
29            .inner
30            .as_mut()
31            .expect("Cannot poll `SeekFuture` after it resolves")
32            .poll_seek(self.pos));
33        let inner = self.inner.take().unwrap();
34        Ok((inner, pos).into())
35    }
36}
tokio_fs/file/seek.rs

tokio_fs/file/
seek.rs
