1use std::fs;
2use std::io;
3use std::path::Path;
4
5use futures::{Future, Poll};
6
7pub fn rename<P: AsRef<Path>, Q: AsRef<Path>>(from: P, to: Q) -> RenameFuture<P, Q> {
16 RenameFuture::new(from, to)
17}
18
19#[derive(Debug)]
21pub struct RenameFuture<P, Q>
22where
23 P: AsRef<Path>,
24 Q: AsRef<Path>,
25{
26 from: P,
27 to: Q,
28}
29
30impl<P, Q> RenameFuture<P, Q>
31where
32 P: AsRef<Path>,
33 Q: AsRef<Path>,
34{
35 fn new(from: P, to: Q) -> RenameFuture<P, Q> {
36 RenameFuture { from: from, to: to }
37 }
38}
39
40impl<P, Q> Future for RenameFuture<P, Q>
41where
42 P: AsRef<Path>,
43 Q: AsRef<Path>,
44{
45 type Item = ();
46 type Error = io::Error;
47
48 fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
49 ::blocking_io(|| fs::rename(&self.from, &self.to))
50 }
51}