diff options
Diffstat (limited to 'compiler/rustc_borrowck/src/diagnostics/region_name.rs')
-rw-r--r-- | compiler/rustc_borrowck/src/diagnostics/region_name.rs | 40 |
1 files changed, 22 insertions, 18 deletions
diff --git a/compiler/rustc_borrowck/src/diagnostics/region_name.rs b/compiler/rustc_borrowck/src/diagnostics/region_name.rs index 9233287cf..f6881a2e5 100644 --- a/compiler/rustc_borrowck/src/diagnostics/region_name.rs +++ b/compiler/rustc_borrowck/src/diagnostics/region_name.rs @@ -187,6 +187,12 @@ impl Display for RegionName { } } +impl rustc_errors::IntoDiagnosticArg for RegionName { + fn into_diagnostic_arg(self) -> rustc_errors::DiagnosticArgValue<'static> { + self.to_string().into_diagnostic_arg() + } +} + impl<'tcx> MirBorrowckCtxt<'_, 'tcx> { pub(crate) fn mir_def_id(&self) -> hir::def_id::LocalDefId { self.body.source.def_id().expect_local() @@ -274,17 +280,10 @@ impl<'tcx> MirBorrowckCtxt<'_, 'tcx> { debug!("give_region_a_name: error_region = {:?}", error_region); match *error_region { - ty::ReEarlyBound(ebr) => { - if ebr.has_name() { - let span = tcx.hir().span_if_local(ebr.def_id).unwrap_or(DUMMY_SP); - Some(RegionName { - name: ebr.name, - source: RegionNameSource::NamedEarlyBoundRegion(span), - }) - } else { - None - } - } + ty::ReEarlyBound(ebr) => ebr.has_name().then(|| { + let span = tcx.hir().span_if_local(ebr.def_id).unwrap_or(DUMMY_SP); + RegionName { name: ebr.name, source: RegionNameSource::NamedEarlyBoundRegion(span) } + }), ty::ReStatic => { Some(RegionName { name: kw::StaticLifetime, source: RegionNameSource::Static }) @@ -337,11 +336,11 @@ impl<'tcx> MirBorrowckCtxt<'_, 'tcx> { let note = match closure_kind_ty.to_opt_closure_kind() { Some(ty::ClosureKind::Fn) => { "closure implements `Fn`, so references to captured variables \ - can't escape the closure" + can't escape the closure" } Some(ty::ClosureKind::FnMut) => { "closure implements `FnMut`, so references to captured variables \ - can't escape the closure" + can't escape the closure" } Some(ty::ClosureKind::FnOnce) => { bug!("BrEnv in a `FnOnce` closure"); @@ -358,7 +357,11 @@ impl<'tcx> MirBorrowckCtxt<'_, 'tcx> { ty::BoundRegionKind::BrAnon(..) => None, }, - ty::ReLateBound(..) | ty::ReVar(..) | ty::RePlaceholder(..) | ty::ReErased => None, + ty::ReLateBound(..) + | ty::ReVar(..) + | ty::RePlaceholder(..) + | ty::ReErased + | ty::ReError(_) => None, } } @@ -842,12 +845,13 @@ impl<'tcx> MirBorrowckCtxt<'_, 'tcx> { let tcx = self.infcx.tcx; let region_parent = tcx.parent(region.def_id); - if tcx.def_kind(region_parent) != DefKind::Impl { + let DefKind::Impl { .. } = tcx.def_kind(region_parent) else { return None; - } + }; - let found = tcx - .any_free_region_meets(&tcx.type_of(region_parent), |r| *r == ty::ReEarlyBound(region)); + let found = tcx.any_free_region_meets(&tcx.type_of(region_parent).subst_identity(), |r| { + *r == ty::ReEarlyBound(region) + }); Some(RegionName { name: self.synthesize_region_name(), |