nordic-dev.net/rust
nordic-dev.net/rust
2
0
Fork 0
mirror of https://github.com/rust-lang/rust.git synced 2024-11-21 22:34:05 +00:00
Code Issues Packages Projects Releases Wiki Activity

ty::BrK -> ty::BoundRegionKind::K

Browse Source
This commit is contained in:
Michael Goulet 2024-11-03 22:06:03 +00:00
parent 883f8705d4
commit d458f850aa
37 changed files with 164 additions and 139 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
compiler/rustc_borrowck/src/diagnostics/region_errors.rs
View File

@ -189,7 +189,7 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
/// Returns `true` if a closure is inferred to be an `FnMut` closure.
fn is_closure_fn_mut(&self, fr: RegionVid) -> bool {
if let Some(ty::ReLateParam(late_param)) = self.to_error_region(fr).as_deref()
&& let ty::BoundRegionKind::BrEnv = late_param.bound_region
&& let ty::BoundRegionKind::ClosureEnv = late_param.bound_region
&& let DefiningTy::Closure(_, args) = self.regioncx.universal_regions().defining_ty
{
return args.as_closure().kind() == ty::ClosureKind::FnMut;

6
compiler/rustc_borrowck/src/diagnostics/region_name.rs
View File

@ -301,7 +301,7 @@ impl<'tcx> MirBorrowckCtxt<'_, '_, 'tcx> {
}
ty::ReLateParam(late_param) => match late_param.bound_region {
ty::BoundRegionKind::BrNamed(region_def_id, name) => {
ty::BoundRegionKind::Named(region_def_id, name) => {
// Get the span to point to, even if we don't use the name.
let span = tcx.hir().span_if_local(region_def_id).unwrap_or(DUMMY_SP);
debug!(
@ -332,7 +332,7 @@ impl<'tcx> MirBorrowckCtxt<'_, '_, 'tcx> {
}
}
ty::BoundRegionKind::BrEnv => {
ty::BoundRegionKind::ClosureEnv => {
let def_ty = self.regioncx.universal_regions().defining_ty;
let closure_kind = match def_ty {
@ -369,7 +369,7 @@ impl<'tcx> MirBorrowckCtxt<'_, '_, 'tcx> {
})
}
ty::BoundRegionKind::BrAnon => None,
ty::BoundRegionKind::Anon => None,
},
ty::ReBound(..)

6
compiler/rustc_borrowck/src/type_check/mod.rs
View File

@ -1375,9 +1375,9 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
let region_ctxt_fn = || {
let reg_info = match br.kind {
ty::BoundRegionKind::BrAnon => sym::anon,
ty::BoundRegionKind::BrNamed(_, name) => name,
ty::BoundRegionKind::BrEnv => sym::env,
ty::BoundRegionKind::Anon => sym::anon,
ty::BoundRegionKind::Named(_, name) => name,
ty::BoundRegionKind::ClosureEnv => sym::env,
};
RegionCtxt::LateBound(reg_info)

6
compiler/rustc_borrowck/src/type_check/relate_tys.rs
View File

@ -271,9 +271,9 @@ impl<'a, 'b, 'tcx> NllTypeRelating<'a, 'b, 'tcx> {
.placeholder_region(self.type_checker.infcx, placeholder);
let reg_info = match placeholder.bound.kind {
ty::BoundRegionKind::BrAnon => sym::anon,
ty::BoundRegionKind::BrNamed(_, name) => name,
ty::BoundRegionKind::BrEnv => sym::env,
ty::BoundRegionKind::Anon => sym::anon,
ty::BoundRegionKind::Named(_, name) => name,
ty::BoundRegionKind::ClosureEnv => sym::env,
};
if cfg!(debug_assertions) {

21
compiler/rustc_borrowck/src/universal_regions.rs
View File

@ -696,14 +696,13 @@ impl<'cx, 'tcx> UniversalRegionsBuilder<'cx, 'tcx> {
let closure_sig = args.as_closure().sig();
let inputs_and_output = closure_sig.inputs_and_output();
let bound_vars = tcx.mk_bound_variable_kinds_from_iter(
inputs_and_output
.bound_vars()
.iter()
.chain(iter::once(ty::BoundVariableKind::Region(ty::BrEnv))),
inputs_and_output.bound_vars().iter().chain(iter::once(
ty::BoundVariableKind::Region(ty::BoundRegionKind::ClosureEnv),
)),
);
let br = ty::BoundRegion {
var: ty::BoundVar::from_usize(bound_vars.len() - 1),
kind: ty::BrEnv,
kind: ty::BoundRegionKind::ClosureEnv,
};
let env_region = ty::Region::new_bound(tcx, ty::INNERMOST, br);
let closure_ty = tcx.closure_env_ty(
@ -751,15 +750,13 @@ impl<'cx, 'tcx> UniversalRegionsBuilder<'cx, 'tcx> {
DefiningTy::CoroutineClosure(def_id, args) => {
assert_eq!(self.mir_def.to_def_id(), def_id);
let closure_sig = args.as_coroutine_closure().coroutine_closure_sig();
let bound_vars = tcx.mk_bound_variable_kinds_from_iter(
closure_sig
.bound_vars()
.iter()
.chain(iter::once(ty::BoundVariableKind::Region(ty::BrEnv))),
);
let bound_vars =
tcx.mk_bound_variable_kinds_from_iter(closure_sig.bound_vars().iter().chain(
iter::once(ty::BoundVariableKind::Region(ty::BoundRegionKind::ClosureEnv)),
));
let br = ty::BoundRegion {
var: ty::BoundVar::from_usize(bound_vars.len() - 1),
kind: ty::BrEnv,
kind: ty::BoundRegionKind::ClosureEnv,
};
let env_region = ty::Region::new_bound(tcx, ty::INNERMOST, br);
let closure_kind = args.as_coroutine_closure().kind();

2
compiler/rustc_hir_analysis/src/check/compare_impl_item.rs
View File

@ -2244,7 +2244,7 @@ fn param_env_with_gat_bounds<'tcx>(
.into()
}
GenericParamDefKind::Lifetime => {
let kind = ty::BoundRegionKind::BrNamed(param.def_id, param.name);
let kind = ty::BoundRegionKind::Named(param.def_id, param.name);
let bound_var = ty::BoundVariableKind::Region(kind);
bound_vars.push(bound_var);
ty::Region::new_bound(tcx, ty::INNERMOST, ty::BoundRegion {

21
compiler/rustc_hir_analysis/src/check/intrinsic.rs
View File

@ -178,19 +178,19 @@ pub fn check_intrinsic_type(
let name_str = intrinsic_name.as_str();
let bound_vars = tcx.mk_bound_variable_kinds(&[
ty::BoundVariableKind::Region(ty::BrAnon),
ty::BoundVariableKind::Region(ty::BrAnon),
ty::BoundVariableKind::Region(ty::BrEnv),
ty::BoundVariableKind::Region(ty::BoundRegionKind::Anon),
ty::BoundVariableKind::Region(ty::BoundRegionKind::Anon),
ty::BoundVariableKind::Region(ty::BoundRegionKind::ClosureEnv),
]);
let mk_va_list_ty = |mutbl| {
tcx.lang_items().va_list().map(|did| {
let region = ty::Region::new_bound(tcx, ty::INNERMOST, ty::BoundRegion {
var: ty::BoundVar::ZERO,
kind: ty::BrAnon,
kind: ty::BoundRegionKind::Anon,
});
let env_region = ty::Region::new_bound(tcx, ty::INNERMOST, ty::BoundRegion {
var: ty::BoundVar::from_u32(2),
kind: ty::BrEnv,
kind: ty::BoundRegionKind::ClosureEnv,
});
let va_list_ty = tcx.type_of(did).instantiate(tcx, &[region.into()]);
(Ty::new_ref(tcx, env_region, va_list_ty, mutbl), va_list_ty)
@ -509,7 +509,8 @@ pub fn check_intrinsic_type(
);
let discriminant_def_id = assoc_items[0];
let br = ty::BoundRegion { var: ty::BoundVar::ZERO, kind: ty::BrAnon };
let br =
ty::BoundRegion { var: ty::BoundVar::ZERO, kind: ty::BoundRegionKind::Anon };
(
1,
0,
@ -573,10 +574,14 @@ pub fn check_intrinsic_type(
}
sym::raw_eq => {
let br = ty::BoundRegion { var: ty::BoundVar::ZERO, kind: ty::BrAnon };
let br =
ty::BoundRegion { var: ty::BoundVar::ZERO, kind: ty::BoundRegionKind::Anon };
let param_ty_lhs =
Ty::new_imm_ref(tcx, ty::Region::new_bound(tcx, ty::INNERMOST, br), param(0));
let br = ty::BoundRegion { var: ty::BoundVar::from_u32(1), kind: ty::BrAnon };
let br = ty::BoundRegion {
var: ty::BoundVar::from_u32(1),
kind: ty::BoundRegionKind::Anon,
};
let param_ty_rhs =
Ty::new_imm_ref(tcx, ty::Region::new_bound(tcx, ty::INNERMOST, br), param(0));
(1, 0, vec![param_ty_lhs, param_ty_rhs], tcx.types.bool)

2
compiler/rustc_hir_analysis/src/collect.rs
View File

@ -634,7 +634,7 @@ fn get_new_lifetime_name<'tcx>(
.collect_referenced_late_bound_regions(poly_trait_ref)
.into_iter()
.filter_map(|lt| {
if let ty::BoundRegionKind::BrNamed(_, name) = lt {
if let ty::BoundRegionKind::Named(_, name) = lt {
Some(name.as_str().to_string())
} else {
None

4
compiler/rustc_hir_analysis/src/collect/resolve_bound_vars.rs
View File

@ -322,7 +322,7 @@ fn late_arg_as_bound_arg<'tcx>(
let name = tcx.item_name(def_id);
match param.kind {
GenericParamKind::Lifetime { .. } => {
ty::BoundVariableKind::Region(ty::BrNamed(def_id, name))
ty::BoundVariableKind::Region(ty::BoundRegionKind::Named(def_id, name))
}
GenericParamKind::Type { .. } => {
ty::BoundVariableKind::Ty(ty::BoundTyKind::Param(def_id, name))
@ -337,7 +337,7 @@ fn late_arg_as_bound_arg<'tcx>(
fn generic_param_def_as_bound_arg(param: &ty::GenericParamDef) -> ty::BoundVariableKind {
match param.kind {
ty::GenericParamDefKind::Lifetime => {
ty::BoundVariableKind::Region(ty::BoundRegionKind::BrNamed(param.def_id, param.name))
ty::BoundVariableKind::Region(ty::BoundRegionKind::Named(param.def_id, param.name))
}
ty::GenericParamDefKind::Type { .. } => {
ty::BoundVariableKind::Ty(ty::BoundTyKind::Param(param.def_id, param.name))

6
compiler/rustc_hir_analysis/src/hir_ty_lowering/bounds.rs
View File

@ -644,7 +644,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
ty::GenericParamDefKind::Lifetime => {
ty::Region::new_bound(tcx, ty::INNERMOST, ty::BoundRegion {
var: ty::BoundVar::from_usize(num_bound_vars),
kind: ty::BoundRegionKind::BrNamed(param.def_id, param.name),
kind: ty::BoundRegionKind::Named(param.def_id, param.name),
})
.into()
}
@ -830,8 +830,8 @@ impl<'tcx> TypeVisitor<TyCtxt<'tcx>> for GenericParamAndBoundVarCollector<'_, 't
}
ty::ReBound(db, br) if db >= self.depth => {
self.vars.insert(match br.kind {
ty::BrNamed(def_id, name) => (def_id, name),
ty::BrAnon | ty::BrEnv => {
ty::BoundRegionKind::Named(def_id, name) => (def_id, name),
ty::BoundRegionKind::Anon | ty::BoundRegionKind::ClosureEnv => {
let guar = self
.cx
.dcx()

16
compiler/rustc_hir_analysis/src/hir_ty_lowering/mod.rs
View File

@ -314,7 +314,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
let name = lifetime_name(def_id);
let br = ty::BoundRegion {
var: ty::BoundVar::from_u32(index),
kind: ty::BrNamed(def_id.to_def_id(), name),
kind: ty::BoundRegionKind::Named(def_id.to_def_id(), name),
};
ty::Region::new_bound(tcx, debruijn, br)
}
@ -332,7 +332,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
ty::Region::new_late_param(
tcx,
scope.to_def_id(),
ty::BrNamed(id.to_def_id(), name),
ty::BoundRegionKind::Named(id.to_def_id(), name),
)
// (*) -- not late-bound, won't change
@ -2449,15 +2449,17 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
) {
for br in referenced_regions.difference(&constrained_regions) {
let br_name = match *br {
ty::BrNamed(_, kw::UnderscoreLifetime) | ty::BrAnon | ty::BrEnv => {
"an anonymous lifetime".to_string()
}
ty::BrNamed(_, name) => format!("lifetime `{name}`"),
ty::BoundRegionKind::Named(_, kw::UnderscoreLifetime)
| ty::BoundRegionKind::Anon
| ty::BoundRegionKind::ClosureEnv => "an anonymous lifetime".to_string(),
ty::BoundRegionKind::Named(_, name) => format!("lifetime `{name}`"),
};
let mut err = generate_err(&br_name);
if let ty::BrNamed(_, kw::UnderscoreLifetime) | ty::BrAnon = *br {
if let ty::BoundRegionKind::Named(_, kw::UnderscoreLifetime)
| ty::BoundRegionKind::Anon = *br
{
// The only way for an anonymous lifetime to wind up
// in the return type but **also** be unconstrained is
// if it only appears in "associated types" in the

8
compiler/rustc_hir_typeck/src/check.rs
View File

@ -194,21 +194,21 @@ fn check_panic_info_fn(tcx: TyCtxt<'_>, fn_id: LocalDefId, fn_sig: ty::FnSig<'_>
let panic_info_ty = tcx.type_of(panic_info_did).instantiate(tcx, &[ty::GenericArg::from(
ty::Region::new_bound(tcx, ty::INNERMOST, ty::BoundRegion {
var: ty::BoundVar::from_u32(1),
kind: ty::BrAnon,
kind: ty::BoundRegionKind::Anon,
}),
)]);
let panic_info_ref_ty = Ty::new_imm_ref(
tcx,
ty::Region::new_bound(tcx, ty::INNERMOST, ty::BoundRegion {
var: ty::BoundVar::ZERO,
kind: ty::BrAnon,
kind: ty::BoundRegionKind::Anon,
}),
panic_info_ty,
);
let bounds = tcx.mk_bound_variable_kinds(&[
ty::BoundVariableKind::Region(ty::BrAnon),
ty::BoundVariableKind::Region(ty::BrAnon),
ty::BoundVariableKind::Region(ty::BoundRegionKind::Anon),
ty::BoundVariableKind::Region(ty::BoundRegionKind::Anon),
]);
let expected_sig = ty::Binder::bind_with_vars(
tcx.mk_fn_sig([panic_info_ref_ty], tcx.types.never, false, fn_sig.safety, ExternAbi::Rust),

4
compiler/rustc_hir_typeck/src/upvar.rs
View File

@ -381,7 +381,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
let closure_env_region: ty::Region<'_> =
ty::Region::new_bound(self.tcx, ty::INNERMOST, ty::BoundRegion {
var: ty::BoundVar::ZERO,
kind: ty::BoundRegionKind::BrEnv,
kind: ty::BoundRegionKind::ClosureEnv,
});
let num_args = args
@ -441,7 +441,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
rustc_abi::ExternAbi::Rust,
),
self.tcx.mk_bound_variable_kinds(&[ty::BoundVariableKind::Region(
ty::BoundRegionKind::BrEnv,
ty::BoundRegionKind::ClosureEnv,
)]),
),
);

2
compiler/rustc_infer/src/infer/canonical/canonicalizer.rs
View File

@ -753,7 +753,7 @@ impl<'cx, 'tcx> Canonicalizer<'cx, 'tcx> {
r: ty::Region<'tcx>,
) -> ty::Region<'tcx> {
let var = self.canonical_var(info, r.into());
let br = ty::BoundRegion { var, kind: ty::BrAnon };
let br = ty::BoundRegion { var, kind: ty::BoundRegionKind::Anon };
ty::Region::new_bound(self.cx(), self.binder_index, br)
}

14
compiler/rustc_lint/src/impl_trait_overcaptures.rs
View File

@ -154,7 +154,7 @@ fn check_fn(tcx: TyCtxt<'_>, parent_def_id: LocalDefId) {
}
for bound_var in sig.bound_vars() {
let ty::BoundVariableKind::Region(ty::BoundRegionKind::BrNamed(def_id, name)) = bound_var
let ty::BoundVariableKind::Region(ty::BoundRegionKind::Named(def_id, name)) = bound_var
else {
span_bug!(tcx.def_span(parent_def_id), "unexpected non-lifetime binder on fn sig");
};
@ -215,7 +215,7 @@ where
for arg in t.bound_vars() {
let arg: ty::BoundVariableKind = arg;
match arg {
ty::BoundVariableKind::Region(ty::BoundRegionKind::BrNamed(def_id, ..))
ty::BoundVariableKind::Region(ty::BoundRegionKind::Named(def_id, ..))
| ty::BoundVariableKind::Ty(ty::BoundTyKind::Param(def_id, _)) => {
added.push(def_id);
let unique = self.in_scope_parameters.insert(def_id, ParamKind::Late);
@ -318,7 +318,7 @@ where
ParamKind::Free(def_id, name) => ty::Region::new_late_param(
self.tcx,
self.parent_def_id.to_def_id(),
ty::BoundRegionKind::BrNamed(def_id, name),
ty::BoundRegionKind::Named(def_id, name),
),
// Totally ignore late bound args from binders.
ParamKind::Late => return true,
@ -489,11 +489,11 @@ fn extract_def_id_from_arg<'tcx>(
ty::ReEarlyParam(ebr) => generics.region_param(ebr, tcx).def_id,
ty::ReBound(
_,
ty::BoundRegion { kind: ty::BoundRegionKind::BrNamed(def_id, ..), .. },
ty::BoundRegion { kind: ty::BoundRegionKind::Named(def_id, ..), .. },
)
| ty::ReLateParam(ty::LateParamRegion {
scope: _,
bound_region: ty::BoundRegionKind::BrNamed(def_id, ..),
bound_region: ty::BoundRegionKind::Named(def_id, ..),
}) => def_id,
_ => unreachable!(),
},
@ -558,11 +558,11 @@ impl<'tcx> TypeRelation<TyCtxt<'tcx>> for FunctionalVariances<'tcx> {
ty::ReEarlyParam(ebr) => self.generics.region_param(ebr, self.tcx).def_id,
ty::ReBound(
_,
ty::BoundRegion { kind: ty::BoundRegionKind::BrNamed(def_id, ..), .. },
ty::BoundRegion { kind: ty::BoundRegionKind::Named(def_id, ..), .. },
)
| ty::ReLateParam(ty::LateParamRegion {
scope: _,
bound_region: ty::BoundRegionKind::BrNamed(def_id, ..),
bound_region: ty::BoundRegionKind::Named(def_id, ..),
}) => def_id,
_ => {
return Ok(a);

5
compiler/rustc_middle/src/mir/query.rs
View File

@ -317,7 +317,10 @@ impl<'tcx> ClosureOutlivesSubjectTy<'tcx> {
pub fn bind(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>) -> Self {
let inner = tcx.fold_regions(ty, |r, depth| match r.kind() {
ty::ReVar(vid) => {
let br = ty::BoundRegion { var: ty::BoundVar::new(vid.index()), kind: ty::BrAnon };
let br = ty::BoundRegion {
var: ty::BoundVar::new(vid.index()),
kind: ty::BoundRegionKind::Anon,
};
ty::Region::new_bound(tcx, depth, br)
}
_ => bug!("unexpected region in ClosureOutlivesSubjectTy: {r:?}"),

9
compiler/rustc_middle/src/ty/context.rs
View File

@ -1059,7 +1059,7 @@ impl<'tcx> CommonLifetimes<'tcx> {
.map(|v| {
mk(ty::ReBound(ty::DebruijnIndex::from(i), ty::BoundRegion {
var: ty::BoundVar::from(v),
kind: ty::BrAnon,
kind: ty::BoundRegionKind::Anon,
}))
})
.collect()
@ -1982,7 +1982,10 @@ impl<'tcx> TyCtxt<'tcx> {
region = self.map_opaque_lifetime_to_parent_lifetime(def_id);
continue;
}
break (scope, ty::BrNamed(def_id.into(), self.item_name(def_id.into())));
break (
scope,
ty::BoundRegionKind::Named(def_id.into(), self.item_name(def_id.into())),
);
};
let is_impl_item = match self.hir_node_by_def_id(suitable_region_binding_scope) {
@ -3091,7 +3094,7 @@ impl<'tcx> TyCtxt<'tcx> {
return ty::Region::new_late_param(
self,
new_parent.to_def_id(),
ty::BoundRegionKind::BrNamed(
ty::BoundRegionKind::Named(
lbv.to_def_id(),
self.item_name(lbv.to_def_id()),
),

2
compiler/rustc_middle/src/ty/fold.rs
View File

@ -399,7 +399,7 @@ impl<'tcx> TyCtxt<'tcx> {
let index = entry.index();
let var = ty::BoundVar::from_usize(index);
let kind = entry
.or_insert_with(|| ty::BoundVariableKind::Region(ty::BrAnon))
.or_insert_with(|| ty::BoundVariableKind::Region(ty::BoundRegionKind::Anon))
.expect_region();
let br = ty::BoundRegion { var, kind };
ty::Region::new_bound(self.tcx, ty::INNERMOST, br)

3
compiler/rustc_middle/src/ty/mod.rs
View File

@ -84,7 +84,6 @@ pub use self::predicate::{
RegionOutlivesPredicate, SubtypePredicate, ToPolyTraitRef, TraitPredicate, TraitRef,
TypeOutlivesPredicate,
};
pub use self::region::BoundRegionKind::*;
pub use self::region::{
BoundRegion, BoundRegionKind, EarlyParamRegion, LateParamRegion, Region, RegionKind, RegionVid,
};
@ -895,7 +894,7 @@ impl rustc_type_ir::inherent::PlaceholderLike for PlaceholderRegion {
}
fn new(ui: UniverseIndex, var: BoundVar) -> Self {
Placeholder { universe: ui, bound: BoundRegion { var, kind: BoundRegionKind::BrAnon } }
Placeholder { universe: ui, bound: BoundRegion { var, kind: BoundRegionKind::Anon } }
}
}

19
compiler/rustc_middle/src/ty/print/pretty.rs
View File

@ -2483,7 +2483,7 @@ impl<'tcx> FmtPrinter<'_, 'tcx> {
| ty::RePlaceholder(ty::Placeholder {
bound: ty::BoundRegion { kind: br, .. }, ..
}) => {
if let ty::BrNamed(_, name) = br
if let ty::BoundRegionKind::Named(_, name) = br
&& br.is_named()
{
p!(write("{}", name));
@ -2569,7 +2569,7 @@ impl<'a, 'tcx> ty::TypeFolder<TyCtxt<'tcx>> for RegionFolder<'a, 'tcx> {
// If this is an anonymous placeholder, don't rename. Otherwise, in some
// async fns, we get a `for<'r> Send` bound
match kind {
ty::BrAnon | ty::BrEnv => r,
ty::BoundRegionKind::Anon | ty::BoundRegionKind::ClosureEnv => r,
_ => {
// Index doesn't matter, since this is just for naming and these never get bound
let br = ty::BoundRegion { var: ty::BoundVar::ZERO, kind };
@ -2688,12 +2688,13 @@ impl<'tcx> FmtPrinter<'_, 'tcx> {
binder_level_idx: ty::DebruijnIndex,
br: ty::BoundRegion| {
let (name, kind) = match br.kind {
ty::BrAnon | ty::BrEnv => {
ty::BoundRegionKind::Anon | ty::BoundRegionKind::ClosureEnv => {
let name = next_name(self);
if let Some(lt_idx) = lifetime_idx {
if lt_idx > binder_level_idx {
let kind = ty::BrNamed(CRATE_DEF_ID.to_def_id(), name);
let kind =
ty::BoundRegionKind::Named(CRATE_DEF_ID.to_def_id(), name);
return ty::Region::new_bound(
tcx,
ty::INNERMOST,
@ -2702,14 +2703,14 @@ impl<'tcx> FmtPrinter<'_, 'tcx> {
}
}
(name, ty::BrNamed(CRATE_DEF_ID.to_def_id(), name))
(name, ty::BoundRegionKind::Named(CRATE_DEF_ID.to_def_id(), name))
}
ty::BrNamed(def_id, kw::UnderscoreLifetime | kw::Empty) => {
ty::BoundRegionKind::Named(def_id, kw::UnderscoreLifetime | kw::Empty) => {
let name = next_name(self);
if let Some(lt_idx) = lifetime_idx {
if lt_idx > binder_level_idx {
let kind = ty::BrNamed(def_id, name);
let kind = ty::BoundRegionKind::Named(def_id, name);
return ty::Region::new_bound(
tcx,
ty::INNERMOST,
@ -2718,9 +2719,9 @@ impl<'tcx> FmtPrinter<'_, 'tcx> {
}
}
(name, ty::BrNamed(def_id, name))
(name, ty::BoundRegionKind::Named(def_id, name))
}
ty::BrNamed(_, name) => {
ty::BoundRegionKind::Named(_, name) => {
if let Some(lt_idx) = lifetime_idx {
if lt_idx > binder_level_idx {
let kind = br.kind;

28
compiler/rustc_middle/src/ty/region.rs
View File

@ -56,7 +56,7 @@ impl<'tcx> Region<'tcx> {
bound_region: ty::BoundRegion,
) -> Region<'tcx> {
// Use a pre-interned one when possible.
if let ty::BoundRegion { var, kind: ty::BrAnon } = bound_region
if let ty::BoundRegion { var, kind: ty::BoundRegionKind::Anon } = bound_region
&& let Some(inner) = tcx.lifetimes.re_late_bounds.get(debruijn.as_usize())
&& let Some(re) = inner.get(var.as_usize()).copied()
{
@ -147,7 +147,7 @@ impl<'tcx> rustc_type_ir::inherent::Region<TyCtxt<'tcx>> for Region<'tcx> {
}
fn new_anon_bound(tcx: TyCtxt<'tcx>, debruijn: ty::DebruijnIndex, var: ty::BoundVar) -> Self {
Region::new_bound(tcx, debruijn, ty::BoundRegion { var, kind: ty::BoundRegionKind::BrAnon })
Region::new_bound(tcx, debruijn, ty::BoundRegion { var, kind: ty::BoundRegionKind::Anon })
}
fn new_static(tcx: TyCtxt<'tcx>) -> Self {
@ -311,7 +311,7 @@ impl<'tcx> Region<'tcx> {
Some(tcx.generics_of(binding_item).region_param(ebr, tcx).def_id)
}
ty::ReLateParam(ty::LateParamRegion {
bound_region: ty::BoundRegionKind::BrNamed(def_id, _),
bound_region: ty::BoundRegionKind::Named(def_id, _),
..
}) => Some(def_id),
_ => None,
@ -355,7 +355,7 @@ impl std::fmt::Debug for EarlyParamRegion {
/// Similar to a placeholder region as we create `LateParam` regions when entering a binder
/// except they are always in the root universe and instead of using a boundvar to distinguish
/// between others we use the `DefId` of the parameter. For this reason the `bound_region` field
/// should basically always be `BoundRegionKind::BrNamed` as otherwise there is no way of telling
/// should basically always be `BoundRegionKind::Named` as otherwise there is no way of telling
/// different parameters apart.
pub struct LateParamRegion {
pub scope: DefId,
@ -366,17 +366,17 @@ pub struct LateParamRegion {
#[derive(HashStable)]
pub enum BoundRegionKind {
/// An anonymous region parameter for a given fn (&T)
BrAnon,
Anon,
/// Named region parameters for functions (a in &'a T)
///
/// The `DefId` is needed to distinguish free regions in
/// the event of shadowing.
BrNamed(DefId, Symbol),
Named(DefId, Symbol),
/// Anonymous region for the implicit env pointer parameter
/// to a closure
BrEnv,
ClosureEnv,
}
#[derive(Copy, Clone, PartialEq, Eq, Hash, TyEncodable, TyDecodable)]
@ -399,9 +399,9 @@ impl<'tcx> rustc_type_ir::inherent::BoundVarLike<TyCtxt<'tcx>> for BoundRegion {
impl core::fmt::Debug for BoundRegion {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self.kind {
BoundRegionKind::BrAnon => write!(f, "{:?}", self.var),
BoundRegionKind::BrEnv => write!(f, "{:?}.Env", self.var),
BoundRegionKind::BrNamed(def, symbol) => {
BoundRegionKind::Anon => write!(f, "{:?}", self.var),
BoundRegionKind::ClosureEnv => write!(f, "{:?}.Env", self.var),
BoundRegionKind::Named(def, symbol) => {
write!(f, "{:?}.Named({:?}, {:?})", self.var, def, symbol)
}
}
@ -411,9 +411,7 @@ impl core::fmt::Debug for BoundRegion {
impl BoundRegionKind {
pub fn is_named(&self) -> bool {
match *self {
BoundRegionKind::BrNamed(_, name) => {
name != kw::UnderscoreLifetime && name != kw::Empty
}
BoundRegionKind::Named(_, name) => name != kw::UnderscoreLifetime && name != kw::Empty,
_ => false,
}
}
@ -421,7 +419,7 @@ impl BoundRegionKind {
pub fn get_name(&self) -> Option<Symbol> {
if self.is_named() {
match *self {
BoundRegionKind::BrNamed(_, name) => return Some(name),
BoundRegionKind::Named(_, name) => return Some(name),
_ => unreachable!(),
}
}
@ -431,7 +429,7 @@ impl BoundRegionKind {
pub fn get_id(&self) -> Option<DefId> {
match *self {
BoundRegionKind::BrNamed(id, _) => Some(id),
BoundRegionKind::Named(id, _) => Some(id),
_ => None,
}
}

6
compiler/rustc_middle/src/ty/structural_impls.rs
View File

@ -62,15 +62,15 @@ impl<'tcx> fmt::Debug for ty::adjustment::Adjustment<'tcx> {
impl fmt::Debug for ty::BoundRegionKind {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match *self {
ty::BrAnon => write!(f, "BrAnon"),
ty::BrNamed(did, name) => {
ty::BoundRegionKind::Anon => write!(f, "BrAnon"),
ty::BoundRegionKind::Named(did, name) => {
if did.is_crate_root() {
write!(f, "BrNamed({name})")
} else {
write!(f, "BrNamed({did:?}, {name})")
}
}
ty::BrEnv => write!(f, "BrEnv"),
ty::BoundRegionKind::ClosureEnv => write!(f, "BrEnv"),
}
}
}

7
compiler/rustc_middle/src/ty/util.rs
View File

@ -735,8 +735,11 @@ impl<'tcx> TyCtxt<'tcx> {
let ty = self.fold_regions(decl.ty, |re, debruijn| {
assert_eq!(re, self.lifetimes.re_erased);
let var = ty::BoundVar::from_usize(vars.len());
vars.push(ty::BoundVariableKind::Region(ty::BrAnon));
ty::Region::new_bound(self, debruijn, ty::BoundRegion { var, kind: ty::BrAnon })
vars.push(ty::BoundVariableKind::Region(ty::BoundRegionKind::Anon));
ty::Region::new_bound(self, debruijn, ty::BoundRegion {
var,
kind: ty::BoundRegionKind::Anon,
})
});
ty::EarlyBinder::bind(ty::Binder::bind_with_vars(
ty,

6
compiler/rustc_smir/src/rustc_internal/internal.rs
View File

@ -335,12 +335,12 @@ impl RustcInternal for BoundVariableKind {
),
}),
BoundVariableKind::Region(kind) => rustc_ty::BoundVariableKind::Region(match kind {
BoundRegionKind::BrAnon => rustc_ty::BoundRegionKind::BrAnon,
BoundRegionKind::BrNamed(def, symbol) => rustc_ty::BoundRegionKind::BrNamed(
BoundRegionKind::BrAnon => rustc_ty::BoundRegionKind::Anon,
BoundRegionKind::BrNamed(def, symbol) => rustc_ty::BoundRegionKind::Named(
def.0.internal(tables, tcx),
Symbol::intern(symbol),
),
BoundRegionKind::BrEnv => rustc_ty::BoundRegionKind::BrEnv,
BoundRegionKind::BrEnv => rustc_ty::BoundRegionKind::ClosureEnv,
}),
BoundVariableKind::Const => rustc_ty::BoundVariableKind::Const,
}

6
compiler/rustc_smir/src/rustc_smir/convert/ty.rs
View File

@ -243,11 +243,11 @@ impl<'tcx> Stable<'tcx> for ty::BoundRegionKind {
use stable_mir::ty::BoundRegionKind;
match self {
ty::BoundRegionKind::BrAnon => BoundRegionKind::BrAnon,
ty::BoundRegionKind::BrNamed(def_id, symbol) => {
ty::BoundRegionKind::Anon => BoundRegionKind::BrAnon,
ty::BoundRegionKind::Named(def_id, symbol) => {
BoundRegionKind::BrNamed(tables.br_named_def(*def_id), symbol.to_string())
}
ty::BoundRegionKind::BrEnv => BoundRegionKind::BrEnv,
ty::BoundRegionKind::ClosureEnv => BoundRegionKind::BrEnv,
}
}
}

2
compiler/rustc_symbol_mangling/src/v0.rs
View File

@ -290,7 +290,7 @@ impl<'tcx> Printer<'tcx> for SymbolMangler<'tcx> {
// Bound lifetimes use indices starting at 1,
// see `BinderLevel` for more details.
ty::ReBound(debruijn, ty::BoundRegion { var, kind: ty::BrAnon }) => {
ty::ReBound(debruijn, ty::BoundRegion { var, kind: ty::BoundRegionKind::Anon }) => {
let binder = &self.binders[self.binders.len() - 1 - debruijn.index()];
let depth = binder.lifetime_depths.start + var.as_u32();

14
compiler/rustc_trait_selection/src/error_reporting/infer/nice_region_error/find_anon_type.rs
View File

@ -100,7 +100,10 @@ impl<'tcx> Visitor<'tcx> for FindNestedTypeVisitor<'tcx> {
// Find the index of the named region that was part of the
// error. We will then search the function parameters for a bound
// region at the right depth with the same index
(Some(rbv::ResolvedArg::EarlyBound(id)), ty::BrNamed(def_id, _)) => {
(
Some(rbv::ResolvedArg::EarlyBound(id)),
ty::BoundRegionKind::Named(def_id, _),
) => {
debug!("EarlyBound id={:?} def_id={:?}", id, def_id);
if id.to_def_id() == def_id {
return ControlFlow::Break(arg);
@ -112,7 +115,7 @@ impl<'tcx> Visitor<'tcx> for FindNestedTypeVisitor<'tcx> {
// region at the right depth with the same index
(
Some(rbv::ResolvedArg::LateBound(debruijn_index, _, id)),
ty::BrNamed(def_id, _),
ty::BoundRegionKind::Named(def_id, _),
) => {
debug!(
"FindNestedTypeVisitor::visit_ty: LateBound depth = {:?}",
@ -191,14 +194,17 @@ impl<'tcx> Visitor<'tcx> for TyPathVisitor<'tcx> {
fn visit_lifetime(&mut self, lifetime: &hir::Lifetime) -> Self::Result {
match (self.tcx.named_bound_var(lifetime.hir_id), self.bound_region) {
// the lifetime of the TyPath!
(Some(rbv::ResolvedArg::EarlyBound(id)), ty::BrNamed(def_id, _)) => {
(Some(rbv::ResolvedArg::EarlyBound(id)), ty::BoundRegionKind::Named(def_id, _)) => {
debug!("EarlyBound id={:?} def_id={:?}", id, def_id);
if id.to_def_id() == def_id {
return ControlFlow::Break(());
}
}
(Some(rbv::ResolvedArg::LateBound(debruijn_index, _, id)), ty::BrNamed(def_id, _)) => {
(
Some(rbv::ResolvedArg::LateBound(debruijn_index, _, id)),
ty::BoundRegionKind::Named(def_id, _),
) => {
debug!("FindNestedTypeVisitor::visit_ty: LateBound depth = {:?}", debruijn_index,);
debug!("id={:?}", id);
debug!("def_id={:?}", def_id);

2
compiler/rustc_trait_selection/src/error_reporting/infer/nice_region_error/named_anon_conflict.rs
View File

@ -60,7 +60,7 @@ impl<'a, 'tcx> NiceRegionError<'a, 'tcx> {
let is_impl_item = region_info.is_impl_item;
match br {
ty::BrNamed(_, kw::UnderscoreLifetime) | ty::BrAnon => {}
ty::BoundRegionKind::Named(_, kw::UnderscoreLifetime) | ty::BoundRegionKind::Anon => {}
_ => {
/* not an anonymous region */
debug!("try_report_named_anon_conflict: not an anonymous region");

8
compiler/rustc_trait_selection/src/error_reporting/infer/nice_region_error/placeholder_relation.rs
View File

@ -29,16 +29,16 @@ impl<'tcx> NiceRegionError<'_, 'tcx> {
)) => {
let span = *span;
let (sub_span, sub_symbol) = match sub_name {
ty::BrNamed(def_id, symbol) => {
ty::BoundRegionKind::Named(def_id, symbol) => {
(Some(self.tcx().def_span(def_id)), Some(symbol))
}
ty::BrAnon | ty::BrEnv => (None, None),
ty::BoundRegionKind::Anon | ty::BoundRegionKind::ClosureEnv => (None, None),
};
let (sup_span, sup_symbol) = match sup_name {
ty::BrNamed(def_id, symbol) => {
ty::BoundRegionKind::Named(def_id, symbol) => {
(Some(self.tcx().def_span(def_id)), Some(symbol))
}
ty::BrAnon | ty::BrEnv => (None, None),
ty::BoundRegionKind::Anon | ty::BoundRegionKind::ClosureEnv => (None, None),
};
let diag = match (sub_span, sup_span, sub_symbol, sup_symbol) {
(Some(sub_span), Some(sup_span), Some(&sub_symbol), Some(&sup_symbol)) => {

2
compiler/rustc_trait_selection/src/error_reporting/infer/nice_region_error/util.rs
View File

@ -46,7 +46,7 @@ pub fn find_param_with_region<'tcx>(
ty::ReLateParam(late_param) => (late_param.scope, late_param.bound_region),
ty::ReEarlyParam(ebr) => {
let region_def = tcx.generics_of(generic_param_scope).region_param(ebr, tcx).def_id;
(tcx.parent(region_def), ty::BoundRegionKind::BrNamed(region_def, ebr.name))
(tcx.parent(region_def), ty::BoundRegionKind::Named(region_def, ebr.name))
}
_ => return None, // not a free region
};

10
compiler/rustc_trait_selection/src/error_reporting/infer/region.rs
View File

@ -993,7 +993,7 @@ impl<'a, 'tcx> TypeErrCtxt<'a, 'tcx> {
fn report_inference_failure(&self, var_origin: RegionVariableOrigin) -> Diag<'_> {
let br_string = |br: ty::BoundRegionKind| {
let mut s = match br {
ty::BrNamed(_, name) => name.to_string(),
ty::BoundRegionKind::Named(_, name) => name.to_string(),
_ => String::new(),
};
if !s.is_empty() {
@ -1103,7 +1103,7 @@ fn msg_span_from_named_region<'tcx>(
("the anonymous lifetime defined here".to_string(), Some(ty.span))
} else {
match fr.bound_region {
ty::BoundRegionKind::BrNamed(param_def_id, name) => {
ty::BoundRegionKind::Named(param_def_id, name) => {
let span = tcx.def_span(param_def_id);
let text = if name == kw::UnderscoreLifetime {
"the anonymous lifetime as defined here".to_string()
@ -1112,7 +1112,7 @@ fn msg_span_from_named_region<'tcx>(
};
(text, Some(span))
}
ty::BrAnon => (
ty::BoundRegionKind::Anon => (
"the anonymous lifetime as defined here".to_string(),
Some(tcx.def_span(generic_param_scope)),
),
@ -1125,11 +1125,11 @@ fn msg_span_from_named_region<'tcx>(
}
ty::ReStatic => ("the static lifetime".to_owned(), alt_span),
ty::RePlaceholder(ty::PlaceholderRegion {
bound: ty::BoundRegion { kind: ty::BoundRegionKind::BrNamed(def_id, name), .. },
bound: ty::BoundRegion { kind: ty::BoundRegionKind::Named(def_id, name), .. },
..
}) => (format!("the lifetime `{name}` as defined here"), Some(tcx.def_span(def_id))),
ty::RePlaceholder(ty::PlaceholderRegion {
bound: ty::BoundRegion { kind: ty::BoundRegionKind::BrAnon, .. },
bound: ty::BoundRegion { kind: ty::BoundRegionKind::Anon, .. },
..
}) => ("an anonymous lifetime".to_owned(), None),
_ => bug!("{:?}", region),

4
compiler/rustc_trait_selection/src/errors/note_and_explain.rs
View File

@ -48,7 +48,7 @@ impl<'a> DescriptionCtx<'a> {
} else {
let scope = fr.scope.expect_local();
match fr.bound_region {
ty::BoundRegionKind::BrNamed(_, name) => {
ty::BoundRegionKind::Named(_, name) => {
let span = if let Some(param) = tcx
.hir()
.get_generics(scope)
@ -64,7 +64,7 @@ impl<'a> DescriptionCtx<'a> {
(Some(span), "as_defined", name.to_string())
}
}
ty::BrAnon => {
ty::BoundRegionKind::Anon => {
let span = Some(tcx.def_span(scope));
(span, "defined_here", String::new())
}

2
compiler/rustc_trait_selection/src/traits/coherence.rs
View File

@ -540,7 +540,7 @@ fn plug_infer_with_placeholders<'tcx>(
universe: self.universe,
bound: ty::BoundRegion {
var: self.next_var(),
kind: ty::BoundRegionKind::BrAnon,
kind: ty::BoundRegionKind::Anon,
},
}),
)

2
compiler/rustc_trait_selection/src/traits/select/confirmation.rs
View File

@ -660,7 +660,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
.into()
}
GenericParamDefKind::Lifetime => {
let kind = ty::BoundRegionKind::BrNamed(param.def_id, param.name);
let kind = ty::BoundRegionKind::Named(param.def_id, param.name);
let bound_var = ty::BoundVariableKind::Region(kind);
bound_vars.push(bound_var);
ty::Region::new_bound(tcx, ty::INNERMOST, ty::BoundRegion {

12
compiler/rustc_trait_selection/src/traits/select/mod.rs
View File

@ -3183,7 +3183,7 @@ fn bind_coroutine_hidden_types_above<'tcx>(
ty::ReErased => {
let br = ty::BoundRegion {
var: ty::BoundVar::from_u32(counter),
kind: ty::BrAnon,
kind: ty::BoundRegionKind::Anon,
};
counter += 1;
ty::Region::new_bound(tcx, current_depth, br)
@ -3196,9 +3196,11 @@ fn bind_coroutine_hidden_types_above<'tcx>(
bty.instantiate(tcx, args)
})
.collect();
let bound_vars =
tcx.mk_bound_variable_kinds_from_iter(bound_vars.iter().chain(
(num_bound_variables..counter).map(|_| ty::BoundVariableKind::Region(ty::BrAnon)),
));
let bound_vars = tcx.mk_bound_variable_kinds_from_iter(
bound_vars.iter().chain(
(num_bound_variables..counter)
.map(|_| ty::BoundVariableKind::Region(ty::BoundRegionKind::Anon)),
),
);
ty::Binder::bind_with_vars(hidden_types, bound_vars)
}

22
compiler/rustc_ty_utils/src/abi.rs
View File

@ -76,12 +76,13 @@ fn fn_sig_for_fn_abi<'tcx>(
ty::Closure(def_id, args) => {
let sig = args.as_closure().sig();
let bound_vars = tcx.mk_bound_variable_kinds_from_iter(
sig.bound_vars().iter().chain(iter::once(ty::BoundVariableKind::Region(ty::BrEnv))),
);
let bound_vars =
tcx.mk_bound_variable_kinds_from_iter(sig.bound_vars().iter().chain(iter::once(
ty::BoundVariableKind::Region(ty::BoundRegionKind::ClosureEnv),
)));
let br = ty::BoundRegion {
var: ty::BoundVar::from_usize(bound_vars.len() - 1),
kind: ty::BoundRegionKind::BrEnv,
kind: ty::BoundRegionKind::ClosureEnv,
};
let env_region = ty::Region::new_bound(tcx, ty::INNERMOST, br);
let env_ty = tcx.closure_env_ty(
@ -105,12 +106,13 @@ fn fn_sig_for_fn_abi<'tcx>(
ty::CoroutineClosure(def_id, args) => {
let coroutine_ty = Ty::new_coroutine_closure(tcx, def_id, args);
let sig = args.as_coroutine_closure().coroutine_closure_sig();
let bound_vars = tcx.mk_bound_variable_kinds_from_iter(
sig.bound_vars().iter().chain(iter::once(ty::BoundVariableKind::Region(ty::BrEnv))),
);
let bound_vars =
tcx.mk_bound_variable_kinds_from_iter(sig.bound_vars().iter().chain(iter::once(
ty::BoundVariableKind::Region(ty::BoundRegionKind::ClosureEnv),
)));
let br = ty::BoundRegion {
var: ty::BoundVar::from_usize(bound_vars.len() - 1),
kind: ty::BoundRegionKind::BrEnv,
kind: ty::BoundRegionKind::ClosureEnv,
};
let env_region = ty::Region::new_bound(tcx, ty::INNERMOST, br);
// When this `CoroutineClosure` comes from a `ConstructCoroutineInClosureShim`,
@ -161,11 +163,11 @@ fn fn_sig_for_fn_abi<'tcx>(
let sig = args.as_coroutine().sig();
let bound_vars = tcx.mk_bound_variable_kinds_from_iter(iter::once(
ty::BoundVariableKind::Region(ty::BrEnv),
ty::BoundVariableKind::Region(ty::BoundRegionKind::ClosureEnv),
));
let br = ty::BoundRegion {
var: ty::BoundVar::from_usize(bound_vars.len() - 1),
kind: ty::BoundRegionKind::BrEnv,
kind: ty::BoundRegionKind::ClosureEnv,
};
let env_ty = Ty::new_mut_ref(tcx, ty::Region::new_bound(tcx, ty::INNERMOST, br), ty);

12
src/librustdoc/clean/mod.rs
View File

@ -304,7 +304,9 @@ pub(crate) fn clean_middle_region(region: ty::Region<'_>) -> Option<Lifetime> {
match *region {
ty::ReStatic => Some(Lifetime::statik()),
_ if !region.has_name() => None,
ty::ReBound(_, ty::BoundRegion { kind: ty::BrNamed(_, name), .. }) => Some(Lifetime(name)),
ty::ReBound(_, ty::BoundRegion { kind: ty::BoundRegionKind::Named(_, name), .. }) => {
Some(Lifetime(name))
}
ty::ReEarlyParam(ref data) => Some(Lifetime(data.name)),
ty::ReBound(..)
| ty::ReLateParam(..)
@ -1896,7 +1898,9 @@ fn clean_trait_object_lifetime_bound<'tcx>(
match *region {
ty::ReStatic => Some(Lifetime::statik()),
ty::ReEarlyParam(region) if region.name != kw::Empty => Some(Lifetime(region.name)),
ty::ReBound(_, ty::BoundRegion { kind: ty::BrNamed(_, name), .. }) if name != kw::Empty => {
ty::ReBound(_, ty::BoundRegion { kind: ty::BoundRegionKind::Named(_, name), .. })
if name != kw::Empty =>
{
Some(Lifetime(name))
}
ty::ReEarlyParam(_)
@ -2141,7 +2145,7 @@ pub(crate) fn clean_middle_ty<'tcx>(
.iter()
.flat_map(|pred| pred.bound_vars())
.filter_map(|var| match var {
ty::BoundVariableKind::Region(ty::BrNamed(def_id, name))
ty::BoundVariableKind::Region(ty::BoundRegionKind::Named(def_id, name))
if name != kw::UnderscoreLifetime =>
{
Some(GenericParamDef::lifetime(def_id, name))
@ -3118,7 +3122,7 @@ fn clean_bound_vars(bound_vars: &ty::List<ty::BoundVariableKind>) -> Vec<Generic
bound_vars
.into_iter()
.filter_map(|var| match var {
ty::BoundVariableKind::Region(ty::BrNamed(def_id, name))
ty::BoundVariableKind::Region(ty::BoundRegionKind::Named(def_id, name))
if name != kw::UnderscoreLifetime =>
{
Some(GenericParamDef::lifetime(def_id, name))