bjoernager/rust
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rustc_resolve: use Iterator combinators instead of for loops where applicable

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This commit is contained in:
Yotam Ofek 2025-01-20 21:07:11 +00:00
parent ae87d005bc
commit 6f22dfe4df
1 changed files with 12 additions and 26 deletions
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38
compiler/rustc_resolve/src/late.rs
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@ -1728,13 +1728,8 @@ impl<'a, 'ast, 'ra: 'ast, 'tcx> LateResolutionVisitor<'a, 'ast, 'ra, 'tcx> {
}
let normalized_ident = ident.normalize_to_macros_2_0();
let mut outer_res = None;
for rib in lifetime_rib_iter {
if let Some((&outer, _)) = rib.bindings.get_key_value(&normalized_ident) {
outer_res = Some(outer);
break;
}
}
let outer_res = lifetime_rib_iter
.find_map(|rib| rib.bindings.get_key_value(&normalized_ident).map(|(&outer, _)| outer));
self.emit_undeclared_lifetime_error(lifetime, outer_res);
self.record_lifetime_res(lifetime.id, LifetimeRes::Error, LifetimeElisionCandidate::Named);
@ -1801,23 +1796,21 @@ impl<'a, 'ast, 'ra: 'ast, 'tcx> LateResolutionVisitor<'a, 'ast, 'ra, 'tcx> {
}
LifetimeRibKind::AnonymousReportError => {
if elided {
let mut suggestion = None;
for rib in self.lifetime_ribs[i..].iter().rev() {
let suggestion = self.lifetime_ribs[i..].iter().rev().find_map(|rib| {
if let LifetimeRibKind::Generics {
span,
kind: LifetimeBinderKind::PolyTrait | LifetimeBinderKind::WhereBound,
..
} = &rib.kind
} = rib.kind
{
suggestion =
Some(errors::ElidedAnonymousLivetimeReportErrorSuggestion {
lo: span.shrink_to_lo(),
hi: lifetime.ident.span.shrink_to_hi(),
});
break;
Some(errors::ElidedAnonymousLivetimeReportErrorSuggestion {
lo: span.shrink_to_lo(),
hi: lifetime.ident.span.shrink_to_hi(),
})
} else {
None
}
}
});
// are we trying to use an anonymous lifetime
// on a non GAT associated trait type?
if !self.in_func_body
@ -2486,14 +2479,7 @@ impl<'a, 'ast, 'ra: 'ast, 'tcx> LateResolutionVisitor<'a, 'ast, 'ra, 'tcx> {
/// Determine whether or not a label from the `rib_index`th label rib is reachable.
fn is_label_valid_from_rib(&self, rib_index: usize) -> bool {
let ribs = &self.label_ribs[rib_index + 1..];
for rib in ribs {
if rib.kind.is_label_barrier() {
return false;
}
}
true
ribs.iter().all(|rib| !rib.kind.is_label_barrier())
}
fn resolve_adt(&mut self, item: &'ast Item, generics: &'ast Generics) {