blob: 175490c488a329aa964383a3928c060a7583a114 [file] [log] [blame]
use crate::Stream;
use core::future::Future;
use core::marker::PhantomPinned;
use core::pin::Pin;
use core::task::{Context, Poll};
use pin_project_lite::pin_project;
pin_project! {
/// Future for the [`next`](super::StreamExt::next) method.
#[must_use = "futures do nothing unless you `.await` or poll them"]
pub struct Next<'a, St: ?Sized> {
stream: &'a mut St,
// Make this future `!Unpin` for compatibility with async trait methods.
_pin: PhantomPinned,
impl<'a, St: ?Sized> Next<'a, St> {
pub(super) fn new(stream: &'a mut St) -> Self {
Next {
_pin: PhantomPinned,
impl<St: ?Sized + Stream + Unpin> Future for Next<'_, St> {
type Output = Option<St::Item>;
fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
let me = self.project();