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use core::pin::Pin;
use futures_core::stream::{FusedStream, Stream, TryStream};
use futures_core::task::{Context, Poll};
use futures_sink::Sink;
use pin_utils::unsafe_pinned;
#[derive(Debug)]
#[must_use = "streams do nothing unless polled"]
pub struct IntoStream<St> {
stream: St,
}
impl<St> IntoStream<St> {
unsafe_pinned!(stream: St);
#[inline]
pub(super) fn new(stream: St) -> Self {
IntoStream { stream }
}
pub fn get_ref(&self) -> &St {
&self.stream
}
pub fn get_mut(&mut self) -> &mut St {
&mut self.stream
}
pub fn into_inner(self) -> St {
self.stream
}
}
impl<St: FusedStream> FusedStream for IntoStream<St> {
fn is_terminated(&self) -> bool {
self.stream.is_terminated()
}
}
impl<St: TryStream> Stream for IntoStream<St> {
type Item = Result<St::Ok, St::Error>;
#[inline]
fn poll_next(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
) -> Poll<Option<Self::Item>> {
self.stream().try_poll_next(cx)
}
}
impl<S: TryStream + Sink<Item>, Item> Sink<Item> for IntoStream<S> {
type SinkError = S::SinkError;
delegate_sink!(stream, Item);
}