Crate reword

Provides a macro to generate structures used for constant value lookup.

reword::reword! {
    enum Lang: &'static str {
        struct Hi {
            const NO = "Hei";
            const EN_UK | EN_US = "Hi";
        }
        struct Fall {
            const NO = "Høst";
            const EN_UK = "Autumn";
            const EN_US = "Fall";
        }
    }
}

let mut lang = Lang::NO;
assert_eq!(lang.get::<Hi>(), "Hei");
assert_eq!(lang.get::<Fall>(), "Høst");
lang = Lang::EN_UK;
assert_eq!(lang.get::<Hi>(), "Hi");
assert_eq!(lang.get::<Fall>(), "Autumn");
lang = Lang::EN_US;
assert_eq!(lang.get::<Hi>(), "Hi");
assert_eq!(lang.get::<Fall>(), "Fall");

Attributes can be attached to both the enum and the structures generated. The Copy, Clone, Debug, Eq, PartialEq, Ord, PartialOrd, and Hash traits are automatically derived for the types using the derive attribute. At the moment, the macro can only be used once per module, so if you need to define multiple structures you should put them in separate submodules.

Macros

reword

The macro used to generate the structures used for constant value lookup.