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fix pending stabilization

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This commit is contained in:
Yoshua Wuyts 2020-09-23 14:23:36 +02:00
parent 741e9388f3
commit 3a6e75cc1d
1 changed files with 11 additions and 1 deletions
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12
src/stream/pending.rs
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@ -2,7 +2,11 @@ use core::marker::PhantomData;
use core::pin::Pin;
use core::task::{Context, Poll};
use crate::stream::{DoubleEndedStream, ExactSizeStream, FusedStream, Stream};
cfg_unstable! {
use crate::stream::{DoubleEndedStream, ExactSizeStream, FusedStream};
}
use crate::stream::Stream;
/// A stream that never returns any items.
///
@ -53,14 +57,20 @@ impl<T> Stream for Pending<T> {
}
}
#[cfg(feature = "unstable")]
#[cfg_attr(feature = "docs", doc(cfg(unstable)))]
impl<T> DoubleEndedStream for Pending<T> {
fn poll_next_back(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Option<T>> {
Poll::Pending
}
}
#[cfg(feature = "unstable")]
#[cfg_attr(feature = "docs", doc(cfg(unstable)))]
impl<T> FusedStream for Pending<T> {}
#[cfg(feature = "unstable")]
#[cfg_attr(feature = "docs", doc(cfg(unstable)))]
impl<T> ExactSizeStream for Pending<T> {
fn len(&self) -> usize {
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