Expand description
This crate implements a #[throws(...)] macro that allows you to easily
declare what errors a function can return.
This will allow you to exhaustively match on all possible errors.
It is inspired by declared exceptions in Java.
The #[throws(...)] macro will automatically generate an enum that can
represent all declared errors, generate From<T> implementations for
each variant, and change the return type of the function to
an appropriate Result<T, E>.
The error type will also have implementations of Error, Display and Debug.
Additionally, it can generate From<T> implementation for upcasting errors,
that is converting an error of a type with fewer variants to one with more variants.
Macros
- Creates a new composite error type with a given name.
Traits
- Represents an error that can be upcasted to a different error type.
Attribute Macros
- Creates a new composite error type for a function to return.