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use std::future::Future;
use std::pin::Pin;
use std::task::{Context, Poll};
use super::Karx;
#[derive(Debug)]
pub struct JoinKarx<T>(super::kernel::JoinHandle<T, Karx>);
impl<T> JoinKarx<T> {
pub(crate) fn new(inner: super::kernel::JoinHandle<T, Karx>) -> JoinKarx<T> {
JoinKarx(inner)
}
pub fn task(&self) -> &Karx {
self.0.tag()
}
}
impl<T> Future for JoinKarx<T> {
type Output = T;
fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
match Pin::new(&mut self.0).poll(cx) {
Poll::Pending => Poll::Pending,
Poll::Ready(None) => panic!("cannot await the result of a panicked Karx"),
Poll::Ready(Some(val)) => Poll::Ready(val),
}
}
}