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use crate::sink::{SinkExt, SinkMapErr};
use core::pin::Pin;
use futures_core::stream::Stream;
use futures_core::task::{Context, Poll};
use futures_sink::{Sink};
use pin_utils::unsafe_pinned;
#[derive(Debug)]
#[must_use = "futures do nothing unless polled"]
pub struct SinkErrInto<Si: Sink<Item>, Item, E> {
sink: SinkMapErr<Si, fn(Si::SinkError) -> E>,
}
impl<Si, E, Item> SinkErrInto<Si, Item, E>
where Si: Sink<Item>,
Si::SinkError: Into<E>,
{
unsafe_pinned!(sink: SinkMapErr<Si, fn(Si::SinkError) -> E>);
pub(super) fn new(sink: Si) -> Self {
SinkErrInto {
sink: SinkExt::sink_map_err(sink, Into::into),
}
}
pub fn get_ref(&self) -> &Si {
self.sink.get_ref()
}
pub fn get_mut(&mut self) -> &mut Si {
self.sink.get_mut()
}
pub fn into_inner(self) -> Si {
self.sink.into_inner()
}
}
impl<Si, Item, E> Sink<Item> for SinkErrInto<Si, Item, E>
where Si: Sink<Item>,
Si::SinkError: Into<E>,
{
type SinkError = E;
delegate_sink!(sink, Item);
}
impl<S, Item, E> Stream for SinkErrInto<S, Item, E>
where S: Sink<Item> + Stream,
S::SinkError: Into<E>
{
type Item = S::Item;
fn poll_next(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
) -> Poll<Option<S::Item>> {
self.sink().poll_next(cx)
}
}