4 releases
0.2.0 | May 11, 2024 |
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0.1.2 | Apr 15, 2024 |
0.1.1 | Apr 7, 2024 |
0.1.0 | Mar 31, 2024 |
#28 in #indexed
64 downloads per month
Used in 2 crates
14KB
245 lines
itsuki
macro that defines a simple zero-based sequential enum ⭐️
Usage
Function-like
use itsuki::define_zero_indexed_enum;
define_zero_indexed_enum! {
Quintuplets => [Ichika, Nino, Miku, Yotsuba, Itsuki]
}
let miku = Quintuplets::Miku;
assert_eq!(miku, Quintuplets::Miku);
assert_ne!(miku, Quintuplets::Nino);
assert_eq!(Quintuplets::len(), 5);
use Quintuplets::*;
assert_eq!(Quintuplets::vars_vec(), vec![Ichika, Nino, Miku, Yotsuba, Itsuki]);
assert_eq!(Quintuplets::vars_array(), [Ichika, Nino, Miku, Yotsuba, Itsuki]);
assert_eq!(Nino.next(), Miku);
assert_eq!(Itsuki.next(), Ichika);
assert_eq!(Yotsuba.prev(), Miku);
assert_eq!(Ichika.prev(), Itsuki);
assert_eq!(Ichika.next_in(|q| [Miku, Yotsuba].contains(&q)), Miku);
assert_eq!(Miku.next_in(|q| [Miku, Yotsuba].contains(&q)), Yotsuba);
assert_eq!(Nino.prev_in(|q| [Miku, Yotsuba].contains(&q)), Yotsuba);
assert_eq!(Yotsuba.prev_in(|q| [Miku, Yotsuba].contains(&q)), Miku);
assert_eq!(Miku.val(), 2);
assert_eq!(Yotsuba.val(), 3);
assert_eq!(Quintuplets::try_from(0), Ok(Ichika));
assert_eq!(Quintuplets::try_from(4), Ok(Itsuki));
assert_eq!(Quintuplets::try_from(5), Err(()));
assert_eq!(1.try_into(), Ok(Nino));
assert_eq!(3.try_into(), Ok(Yotsuba));
Derive
use itsuki::ZeroIndexedEnum;
#[derive(ZeroIndexedEnum, Debug, Clone, Copy, PartialEq, Eq)]
enum Quintuplets {
Ichika,
Nino,
Miku,
Yotsuba,
Itsuki,
}
Attribute
use itsuki::zero_indexed_enum;
#[zero_indexed_enum]
enum Quintuplets {
Ichika,
Nino,
Miku,
Yotsuba,
Itsuki,
}
License
MIT
Dependencies
~230–670KB
~16K SLoC