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derive hash for placeholder automatically

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AlexanderPortland 2025-08-07 09:13:02 -07:00
parent 56d5aab31d
commit b9e6bd7fe2
1 changed files with 1 additions and 11 deletions
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12
compiler/rustc_public/src/ty.rs
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@ -249,22 +249,12 @@ pub struct BoundRegion {
pub(crate) type UniverseIndex = u32;
#[derive(Clone, Debug, Eq, PartialEq, Serialize)]
#[derive(Clone, Debug, Eq, PartialEq, Hash, Serialize)]
pub struct Placeholder<T> {
pub universe: UniverseIndex,
pub bound: T,
}
impl<T: std::hash::Hash> std::hash::Hash for Placeholder<T> {
fn hash<H>(&self, state: &mut H)
where
H: std::hash::Hasher,
{
self.universe.hash(state);
self.bound.hash(state);
}
}
#[derive(Clone, Copy, PartialEq, Eq, Hash, Serialize)]
pub struct Span(usize);