System Initiative

// Runnable trait which can be used as a trait object (i.e. `Box<dyn Runnable>`), containing a // method which moves `self` (i.e. `fn run(self)`). // // See: https://users.rust-lang.org/t/need-explanation-on-how-to-avoid-this-move-out-of-a-box-dyn/98734/3 // See: https://quinedot.github.io/rust-learning/dyn-trait-box-impl.html use async_trait::async_trait; use super::ServerResult; #[async_trait] pub trait BoxedRunnable { async fn try_boxed_run(self: Box<Self>) -> ServerResult<()>; } #[async_trait] pub trait Runnable: BoxedRunnable { async fn try_run(self) -> ServerResult<()>; } #[async_trait] impl<T: Runnable + Send> BoxedRunnable for T { async fn try_boxed_run(self: Box<Self>) -> ServerResult<()> { <Self as Runnable>::try_run(*self).await } } #[async_trait] impl Runnable for Box<dyn Runnable + Send + '_> { async fn try_run(self) -> ServerResult<()> { <dyn Runnable as BoxedRunnable>::try_boxed_run(self).await } }