Macro macro_bits::serializable_enum

macro_rules! serializable_enum {
    (
        $(#[$enum_attr:meta])*
        $enum_visibility:vis enum $enum_name:ident : $representation:ty {
            $(
                $(#[$field_attr:meta])*
                $field_name:ident => $field_value:expr
            ),*
        }
    ) => { ... };
}

Generate a serializable enum.

An Unknown field is always generated, which contains a variable, which type is the enum representation.

use macro_bits::serializable_enum;
 
serializable_enum! {
    #[derive(Debug, PartialEq)]
    pub enum ABC: u8 {
        /// This is a doc comment too.
        A => 0,
        B => 1,
        C => 2
    }
}
assert_eq!(ABC::from_representation(2), ABC::C);
assert_eq!(ABC::from_representation(3), ABC::Unknown(3));
assert_eq!((ABC::C).to_representation(), 2);