7 releases
new 0.2.1 | Mar 25, 2025 |
---|---|
0.2.0 | Mar 22, 2025 |
0.1.5 | Dec 11, 2024 |
0.1.4 | Aug 29, 2024 |
0.1.2 | Jun 27, 2023 |
#288 in Procedural macros
196 downloads per month
46KB
1K
SLoC
inttype-enum
Converts an enum
into an inttype
, and try to convert it back
Auto implement From<enum> for inttype
, and TryFrom<inttype> for enum
.
if one(only one) variant is tagged with #[default]
, then From<inttype> for enum
will be implemented
Usage examples
IntType
use inttype_enum::IntType;
#[derive(IntType)]
#[repr(u8)]
enum Cmd {
Connect = 1,
Bind = 2,
Udp = 3,
}
let conn: u8 = Cmd::Connect.into();
assert!(matches!(Cmd::try_from(conn), Ok(Cmd::Connect)));
assert!(matches!(Cmd::try_from(0), Err(_)));
use inttype_enum::IntType;
#[derive(IntType)]
#[repr(u8)]
enum Method {
A = 1,
B = 2,
#[default]
C = 3,
}
assert!(matches!(1.into(), Method::A));
assert!(matches!(0.into(), Method::C));
IntRange
use inttype_enum::IntRange;
#[repr(u8)]
#[derive(IntRange)]
#[derive(Debug, PartialEq, Eq)]
enum Test {
A = 0x00,
#[range(1..16)]
B(u8),
#[range(16..)]
C(u8),
}
assert_eq!(Test::try_from(0), Ok(Test::A));
assert!(0u8 == Test::A.into());
assert_eq!(Test::B(16).is_valid(), false);
assert_eq!(Test::try_from(16), Ok(Test::C(16)));
Dependencies
~195–630KB
~15K SLoC