Macro rail_async 

macro_rules! rail_async {
    ($fut:expr $(,)?) => { ... };
}

Wraps a future in an AsyncErrorPipeline.

This macro provides a convenient way to create an async error pipeline from a future that returns a Result.

Examples

use error_rail::prelude_async::*;

#[derive(Debug)]
struct Data;

#[derive(Debug)]
struct ApiError;

async fn fetch_data(_id: u64) -> Result<Data, ApiError> {
    Err(ApiError)
}

async fn example(id: u64) -> BoxedResult<Data, ApiError> {
    rail_async!(fetch_data(id))
        .with_context("fetching data")
        .finish_boxed()
        .await
}