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#![feature(async_fn_in_trait)]
use enum_dispatch::enum_dispatch;
struct A;
struct B;
impl XTrait for A {
async fn run(&mut self) -> Result<u32, ()> {
Ok(10)
}
}
impl XTrait for B {
async fn run(&mut self) -> Result<u32, ()> {
Ok(20)
}
}
#[enum_dispatch]
enum X {
A,
B,
}
#[enum_dispatch(X)]
trait XTrait {
async fn run(&mut self) -> Result<u32, ()>;
}
fn main() -> smol::io::Result<()> {
let mut a: X = A.into();
let mut b: X = B.into();
smol::block_on(async {
assert_eq!(10, a.run().await.unwrap());
assert_eq!(20, b.run().await.unwrap());
Ok(())
})
}
|
