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Add comments to opportunistic resolve functions

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This commit is contained in:
Jack Huey 2021-05-15 23:36:10 -04:00
parent 909d0e83d6
commit c6e4284f8b
1 changed files with 4 additions and 0 deletions
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4
compiler/rustc_infer/src/infer/region_constraints/mod.rs
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@ -623,10 +623,14 @@ impl<'tcx> RegionConstraintCollector<'_, 'tcx> {
} }
} }
/// Resolves the passed RegionVid to the root RegionVid in the unification table
pub fn opportunistic_resolve_var(&mut self, rid: ty::RegionVid) -> ty::RegionVid { pub fn opportunistic_resolve_var(&mut self, rid: ty::RegionVid) -> ty::RegionVid {
self.unification_table().find(rid).vid self.unification_table().find(rid).vid
} }
/// If the Region is a `ReVar`, then resolves it either to the root value in
/// the unification table, if it exists, or to the root `ReVar` in the table.
/// If the Region is not a `ReVar`, just returns the Region itself.
pub fn opportunistic_resolve_region( pub fn opportunistic_resolve_region(
&mut self, &mut self,
tcx: TyCtxt<'tcx>, tcx: TyCtxt<'tcx>,