[−][src]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. |