Derive Macro error_info_macros::ErrorInfo

#[derive(ErrorInfo)]
{
    // Attributes available to this derive:
    #[error]
}

Derives the ErrorInfo trait for an enum. It’s highly recommended to include a prefix on each variant, as the name is used to generate the code, which is ofter required to be unique.

Each variant must provide an status and a message, which can use variant’s fields.

It requires the linkme crate to be available.

Examples

#[derive(Debug, ErrorInfo)]
#[allow(clippy::enum_variant_names)]
pub enum CustomErrorCode {
    #[error(status = StatusCode::BAD_REQUEST, message = "Bad request: missing '{field}' field")]
    BadRequest { field: String },
    #[error(status = StatusCode::INTERNAL_SERVER_ERROR, message = "Internal server error")]
    InternalServerError,
}