bjoernager/rust
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Rename some functions to represent their generalized behavior

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This commit is contained in:
Michael Goulet 2024-03-06 18:48:13 +00:00
parent 99df5a2b42
commit 74d5bbbf94
4 changed files with 13 additions and 13 deletions
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20
compiler/rustc_middle/src/ty/context.rs
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@ -1254,7 +1254,7 @@ impl<'tcx> TyCtxt<'tcx> {
if self.def_kind(scope) == DefKind::OpaqueTy {
// Lifetime params of opaque types are synthetic and thus irrelevant to
// diagnostics. Map them back to their origin!
region = self.map_rpit_lifetime_to_fn_lifetime(def_id);
region = self.map_opaque_lifetime_to_parent_lifetime(def_id);
continue;
}
break (scope, ty::BrNamed(def_id.into(), self.item_name(def_id.into())));
@ -2219,31 +2219,31 @@ impl<'tcx> TyCtxt<'tcx> {
)
}
/// Given the def-id of an early-bound lifetime on an RPIT corresponding to
/// Given the def-id of an early-bound lifetime on an opaque corresponding to
/// a duplicated captured lifetime, map it back to the early- or late-bound
/// lifetime of the function from which it originally as captured. If it is
/// a late-bound lifetime, this will represent the liberated (`ReLateParam`) lifetime
/// of the signature.
// FIXME(RPITIT): if we ever synthesize new lifetimes for RPITITs and not just
// re-use the generics of the opaque, this function will need to be tweaked slightly.
pub fn map_rpit_lifetime_to_fn_lifetime(
pub fn map_opaque_lifetime_to_parent_lifetime(
self,
mut rpit_lifetime_param_def_id: LocalDefId,
mut opaque_lifetime_param_def_id: LocalDefId,
) -> ty::Region<'tcx> {
debug_assert!(
matches!(self.def_kind(rpit_lifetime_param_def_id), DefKind::LifetimeParam),
"{rpit_lifetime_param_def_id:?} is a {}",
self.def_descr(rpit_lifetime_param_def_id.to_def_id())
matches!(self.def_kind(opaque_lifetime_param_def_id), DefKind::LifetimeParam),
"{opaque_lifetime_param_def_id:?} is a {}",
self.def_descr(opaque_lifetime_param_def_id.to_def_id())
);
loop {
let parent = self.local_parent(rpit_lifetime_param_def_id);
let parent = self.local_parent(opaque_lifetime_param_def_id);
let hir::OpaqueTy { lifetime_mapping, .. } =
self.hir_node_by_def_id(parent).expect_item().expect_opaque_ty();
let Some((lifetime, _)) = lifetime_mapping
.iter()
.find(|(_, duplicated_param)| *duplicated_param == rpit_lifetime_param_def_id)
.find(|(_, duplicated_param)| *duplicated_param == opaque_lifetime_param_def_id)
else {
bug!("duplicated lifetime param should be present");
};
@ -2256,7 +2256,7 @@ impl<'tcx> TyCtxt<'tcx> {
// of the opaque we mapped from. Continue mapping.
if matches!(self.def_kind(new_parent), DefKind::OpaqueTy) {
debug_assert_eq!(self.parent(parent.to_def_id()), new_parent);
rpit_lifetime_param_def_id = ebv.expect_local();
opaque_lifetime_param_def_id = ebv.expect_local();
continue;
}