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Simplify subst / subst_bound_vars a bit

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This commit is contained in:
Florian Diebold 2019-05-04 18:41:48 +02:00
parent f43e69a64e
commit 19fbd91998
1 changed files with 2 additions and 12 deletions
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14
crates/ra_hir/src/ty.rs
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@ -411,11 +411,7 @@ impl Ty {
pub fn subst(self, substs: &Substs) -> Ty { pub fn subst(self, substs: &Substs) -> Ty {
self.fold(&mut |ty| match ty { self.fold(&mut |ty| match ty {
Ty::Param { idx, name } => { Ty::Param { idx, name } => {
if (idx as usize) < substs.len() { substs.get(idx as usize).cloned().unwrap_or(Ty::Param { idx, name })
substs[idx as usize].clone()
} else {
Ty::Param { idx, name }
}
} }
ty => ty, ty => ty,
}) })
@ -424,13 +420,7 @@ impl Ty {
/// Substitutes `Ty::Bound` vars (as opposed to type parameters). /// Substitutes `Ty::Bound` vars (as opposed to type parameters).
pub fn subst_bound_vars(self, substs: &Substs) -> Ty { pub fn subst_bound_vars(self, substs: &Substs) -> Ty {
self.fold(&mut |ty| match ty { self.fold(&mut |ty| match ty {
Ty::Bound(idx) => { Ty::Bound(idx) => substs.get(idx as usize).cloned().unwrap_or(Ty::Bound(idx)),
if (idx as usize) < substs.len() {
substs[idx as usize].clone()
} else {
Ty::Bound(idx)
}
}
ty => ty, ty => ty,
}) })
} }