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use std::future::Future;
use std::pin::Pin;
use std::task::{Context, Poll};
use crate::error::Error;
pub struct Task<T> {
#[cfg(feature = "smol")]
inner_task: smol::Task<T>,
#[cfg(feature = "tokio")]
inner_task: tokio::task::JoinHandle<T>,
}
impl<T> Task<T> {
pub async fn cancel(self) {
#[cfg(feature = "smol")]
self.inner_task.cancel().await;
#[cfg(feature = "tokio")]
self.inner_task.abort();
}
}
impl<T> Future for Task<T> {
type Output = Result<T, Error>;
fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
#[cfg(feature = "smol")]
let result = smol::Task::poll(Pin::new(&mut self.inner_task), cx);
#[cfg(feature = "tokio")]
let result = tokio::task::JoinHandle::poll(Pin::new(&mut self.inner_task), cx);
#[cfg(feature = "smol")]
return result.map(Ok);
#[cfg(feature = "tokio")]
return result.map_err(|e| e.into());
}
}
#[cfg(feature = "smol")]
impl<T> From<smol::Task<T>> for Task<T> {
fn from(t: smol::Task<T>) -> Task<T> {
Task { inner_task: t }
}
}
#[cfg(feature = "tokio")]
impl<T> From<tokio::task::JoinHandle<T>> for Task<T> {
fn from(t: tokio::task::JoinHandle<T>) -> Task<T> {
Task { inner_task: t }
}
}
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