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#![allow(dead_code)]
use hyper::rt::Executor;
use std::fmt;
use std::future::Future;
use std::pin::Pin;
use std::sync::Arc;
pub(crate) type BoxSendFuture = Pin<Box<dyn Future<Output = ()> + Send>>;
// Either the user provides an executor for background tasks, or we use
// `tokio::spawn`.
#[derive(Clone)]
pub(crate) enum Exec {
Executor(Arc<dyn Executor<BoxSendFuture> + Send + Sync>),
}
// ===== impl Exec =====
impl Exec {
pub(crate) fn new<E>(inner: E) -> Self
where
E: Executor<BoxSendFuture> + Send + Sync + 'static,
{
Exec::Executor(Arc::new(inner))
}
pub(crate) fn execute<F>(&self, fut: F)
where
F: Future<Output = ()> + Send + 'static,
{
match *self {
Exec::Executor(ref e) => {
e.execute(Box::pin(fut));
}
}
}
}
impl fmt::Debug for Exec {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_struct("Exec").finish()
}
}
impl<F> hyper::rt::Executor<F> for Exec
where
F: Future<Output = ()> + Send + 'static,
{
fn execute(&self, fut: F) {
Exec::execute(self, fut);
}
}
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