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use std::io;
use futures::{Poll, Future, Async};
use AsyncWrite;
#[derive(Debug)]
pub struct Shutdown<A> {
a: Option<A>,
}
pub fn shutdown<A>(a: A) -> Shutdown<A>
where A: AsyncWrite,
{
Shutdown {
a: Some(a),
}
}
impl<A> Future for Shutdown<A>
where A: AsyncWrite,
{
type Item = A;
type Error = io::Error;
fn poll(&mut self) -> Poll<A, io::Error> {
try_nb!(self.a.as_mut().unwrap().shutdown());
Ok(Async::Ready(self.a.take().unwrap()))
}
}