58 lines
1.3 KiB
Rust
58 lines
1.3 KiB
Rust
use crate::sink::{SinkExt, SinkMapErr};
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use futures_core::stream::{FusedStream, Stream};
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use futures_sink::Sink;
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use pin_project_lite::pin_project;
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pin_project! {
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/// Sink for the [`sink_err_into`](super::SinkExt::sink_err_into) method.
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#[derive(Debug)]
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#[must_use = "sinks do nothing unless polled"]
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pub struct SinkErrInto<Si: Sink<Item>, Item, E> {
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#[pin]
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sink: SinkMapErr<Si, fn(Si::Error) -> E>,
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}
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}
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impl<Si, E, Item> SinkErrInto<Si, Item, E>
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where
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Si: Sink<Item>,
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Si::Error: Into<E>,
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{
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pub(super) fn new(sink: Si) -> Self {
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Self { sink: SinkExt::sink_map_err(sink, Into::into) }
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}
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delegate_access_inner!(sink, Si, (.));
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}
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impl<Si, Item, E> Sink<Item> for SinkErrInto<Si, Item, E>
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where
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Si: Sink<Item>,
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Si::Error: Into<E>,
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{
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type Error = E;
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delegate_sink!(sink, Item);
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}
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// Forwarding impl of Stream from the underlying sink
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impl<S, Item, E> Stream for SinkErrInto<S, Item, E>
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where
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S: Sink<Item> + Stream,
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S::Error: Into<E>,
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{
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type Item = S::Item;
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delegate_stream!(sink);
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}
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impl<S, Item, E> FusedStream for SinkErrInto<S, Item, E>
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where
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S: Sink<Item> + FusedStream,
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S::Error: Into<E>,
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{
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fn is_terminated(&self) -> bool {
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self.sink.is_terminated()
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}
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}
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