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Change the constructor of salsa::Id to const fn

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This commit is contained in:
Yoshitomo Nakanishi 2023-04-12 13:36:17 +02:00
parent 67d290dc26
commit 5718229882
1 changed files with 6 additions and 4 deletions
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10
components/salsa-2022/src/id.rs
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@ -26,14 +26,16 @@ impl Id {
/// but it can be useful if you are using the type as a general /// but it can be useful if you are using the type as a general
/// purpose "identifier" internally. /// purpose "identifier" internally.
#[track_caller] #[track_caller]
pub fn from_u32(x: u32) -> Self { pub const fn from_u32(x: u32) -> Self {
assert!(x < Self::MAX_U32);
Id { Id {
value: NonZeroU32::new(x + 1).unwrap(), value: match NonZeroU32::new(x + 1) {
Some(v) => v,
None => panic!("given value is too large to be a `salsa::Id`"),
},
} }
} }
pub fn as_u32(self) -> u32 { pub const fn as_u32(self) -> u32 {
self.value.get() - 1 self.value.get() - 1
} }
} }