1 files changed, 34 insertions, 0 deletions
diff --git a/vendor/futures-util/src/stream/try_stream/try_next.rs b/vendor/futures-util/src/stream/try_stream/try_next.rs
new file mode 100644
index 000000000..13fcf80ca
--- /dev/null
+++ b/vendor/futures-util/src/stream/try_stream/try_next.rs
@@ -0,0 +1,34 @@
+use crate::stream::TryStreamExt;
+use core::pin::Pin;
+use futures_core::future::{FusedFuture, Future};
+use futures_core::stream::{FusedStream, TryStream};
+use futures_core::task::{Context, Poll};
+
+/// Future for the [`try_next`](super::TryStreamExt::try_next) method.
+#[derive(Debug)]
+#[must_use = "futures do nothing unless you `.await` or poll them"]
+pub struct TryNext<'a, St: ?Sized> {
+    stream: &'a mut St,
+}
+
+impl<St: ?Sized + Unpin> Unpin for TryNext<'_, St> {}
+
+impl<'a, St: ?Sized + TryStream + Unpin> TryNext<'a, St> {
+    pub(super) fn new(stream: &'a mut St) -> Self {
+        Self { stream }
+    }
+}
+
+impl<St: ?Sized + TryStream + Unpin + FusedStream> FusedFuture for TryNext<'_, St> {
+    fn is_terminated(&self) -> bool {
+        self.stream.is_terminated()
+    }
+}
+
+impl<St: ?Sized + TryStream + Unpin> Future for TryNext<'_, St> {
+    type Output = Result<Option<St::Ok>, St::Error>;
+
+    fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
+        self.stream.try_poll_next_unpin(cx)?.map(Ok)
+    }
+}