1 use std::pin::Pin;
2 use std::future::Future;
3 
4 use crate::io::{self, Write};
5 use crate::task::{Context, Poll};
6 
7 #[doc(hidden)]
8 #[allow(missing_debug_implementations)]
9 pub struct WriteFuture<'a, T: Unpin + ?Sized> {
10     pub(crate) writer: &'a mut T,
11     pub(crate) buf: &'a [u8],
12 }
13 
14 impl<T: Write + Unpin + ?Sized> Future for WriteFuture<'_, T> {
15     type Output = io::Result<usize>;
16 
poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output>17     fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
18         let buf = self.buf;
19         Pin::new(&mut *self.writer).poll_write(cx, buf)
20     }
21 }
22