Crate fatality

Declarative annotations for fatal or jfyi error variants.

Expand #[fatal] annotations on enum variants into two additional enums that can be converted back, or the original split into two. Determination of fatality can also be forwarded to an inner error that implements the trait Fatality.

Stands on the shoulders of thiserror.

Note: At this time crate fatality also has to import thiserror as part of the manifest until https://github.com/dtolnay/thiserror/issues/167 is resolved.

Re-exports

• pub use thiserror;

Traits

• Fatality
  Determine the fatality of an error.
• Nested
  Converts a flat, yet splitable error into a nested Result<Result<_,Jfyi>, Fatal> error type.
• Split
  Allows to split an error into two types - a fatal and a informational enum error type, that can be further consumed.

Attribute Macros

• fatality