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use super::{Context, Effectful, Poll};
use std::pin::Pin;
pub enum Either<L, R> {
A(L),
B(R),
}
impl<Output, Effect, L, R> Effectful for Either<L, R>
where
L: Effectful<Output = Output, Effect = Effect>,
R: Effectful<Output = Output, Effect = Effect>,
{
type Output = Output;
type Effect = Effect;
#[inline]
fn poll(self: Pin<&mut Self>, cx: &Context) -> Poll<Self::Output, Self::Effect> {
use Either::*;
unsafe {
let this = self.get_unchecked_mut();
match this {
A(ref mut left) => Pin::new_unchecked(left).poll(cx),
B(ref mut right) => Pin::new_unchecked(right).poll(cx),
}
}
}
}