Struct scope_guard::CatchUnwindFut

pub struct CatchUnwindFut<F: UnwindSafe>(pub F);

Wraps to propagate panic as error.

Example

use scope_guard::CatchUnwindFut;

async fn my_fut() -> Result<(), bool> {
    Err(true)
}

async fn example() {
    match CatchUnwindFut(my_fut()).await {
        Ok(Ok(())) => panic!("Success!?"),
        Ok(Err(res)) => assert!(res),
        Err(panic) => std::panic::resume_unwind(panic),
    }
}

Tuple Fields

0: F

Trait Implementations

impl<F: Future + UnwindSafe> Future for CatchUnwindFut<F>

type Output = Result<<F as Future>::Output, Box<dyn Any + Send + 'static, Global>>

The type of value produced on completion.

fn poll(self: Pin<&mut Self>, ctx: &mut Context<'_>) -> Poll<Self::Output>

Attempt to resolve the future to a final value, registering the current task for wakeup if the value is not yet available.