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use super::{error, Error};
use futures_core::ready;
use pin_project::pin_project;
use std::{
future::Future,
pin::Pin,
task::{Context, Poll},
};
#[pin_project]
#[derive(Debug)]
pub struct ResponseFuture<T> {
#[pin]
inner: Option<T>,
}
impl<T> ResponseFuture<T> {
pub(crate) fn new(inner: Option<T>) -> ResponseFuture<T> {
ResponseFuture { inner }
}
}
impl<F, T, E> Future for ResponseFuture<F>
where
F: Future<Output = Result<T, E>>,
E: Into<Error>,
{
type Output = Result<T, Error>;
fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
match self.project().inner.as_pin_mut() {
Some(inner) => Poll::Ready(Ok(ready!(inner.poll(cx)).map_err(Into::into)?)),
None => Poll::Ready(Err(error::None::new().into())),
}
}
}