diff options
Diffstat (limited to 'vendor/futures-util/src/sink/close.rs')
-rw-r--r-- | vendor/futures-util/src/sink/close.rs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/vendor/futures-util/src/sink/close.rs b/vendor/futures-util/src/sink/close.rs new file mode 100644 index 000000000..43eea74b0 --- /dev/null +++ b/vendor/futures-util/src/sink/close.rs @@ -0,0 +1,32 @@ +use core::marker::PhantomData; +use core::pin::Pin; +use futures_core::future::Future; +use futures_core::task::{Context, Poll}; +use futures_sink::Sink; + +/// Future for the [`close`](super::SinkExt::close) method. +#[derive(Debug)] +#[must_use = "futures do nothing unless you `.await` or poll them"] +pub struct Close<'a, Si: ?Sized, Item> { + sink: &'a mut Si, + _phantom: PhantomData<fn(Item)>, +} + +impl<Si: Unpin + ?Sized, Item> Unpin for Close<'_, Si, Item> {} + +/// A future that completes when the sink has finished closing. +/// +/// The sink itself is returned after closing is complete. +impl<'a, Si: Sink<Item> + Unpin + ?Sized, Item> Close<'a, Si, Item> { + pub(super) fn new(sink: &'a mut Si) -> Self { + Self { sink, _phantom: PhantomData } + } +} + +impl<Si: Sink<Item> + Unpin + ?Sized, Item> Future for Close<'_, Si, Item> { + type Output = Result<(), Si::Error>; + + fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> { + Pin::new(&mut self.sink).poll_close(cx) + } +} |