Macro tracerr::map_from_and_new

macro_rules! map_from_and_new {
    ($e:expr) => { ... };
}

Captures new Frame in the invocation place and wraps the given error into Traced wrapper containing this Frame with applying required From implementation for the wrapped error. If the error is a Traced already then just applies From implementation and growth its Trace with the captured Frame.

Examples

use tracerr::Traced;

let err: Traced<u8> = tracerr::new!(8);
let err: Traced<u64> = tracerr::map_from_and_new!(err);