3 files changed, 12 insertions, 16 deletions

diff --git a/crates/hir_ty/src/lib.rs b/crates/hir_ty/src/lib.rs
index 6d5123cf1..61f5adbc4 100644
--- a/crates/hir_ty/src/lib.rs
+++ b/crates/hir_ty/src/lib.rs
@@ -92,13 +92,11 @@ pub fn param_idx(db: &dyn HirDatabase, id: TypeParamId) -> Option<usize> {
     generics(db.upcast(), id.parent).param_idx(id)
 }
 
-impl<T> Binders<T> {
-    pub fn wrap_empty(value: T) -> Self
-    where
-        T: TypeWalk,
-    {
-        Binders::empty(&Interner, value.shifted_in_from(DebruijnIndex::ONE))
-    }
+pub fn wrap_empty_binders<T>(value: T) -> Binders<T>
+where
+    T: TypeWalk,
+{
+    Binders::empty(&Interner, value.shifted_in_from(DebruijnIndex::ONE))
 }
 
 impl<T: TypeWalk> Binders<T> {
diff --git a/crates/hir_ty/src/lower.rs b/crates/hir_ty/src/lower.rs
index 48c26f471..6cef8095f 100644
--- a/crates/hir_ty/src/lower.rs
+++ b/crates/hir_ty/src/lower.rs
@@ -384,7 +384,9 @@ impl<'a> TyLoweringContext<'a> {
                             1,
                             QuantifiedWhereClauses::from_iter(
                                 &Interner,
-                                Some(Binders::wrap_empty(WhereClause::Implemented(trait_ref))),
+                                Some(crate::wrap_empty_binders(WhereClause::Implemented(
+                                    trait_ref,
+                                ))),
                             ),
                         ),
                     };
@@ -720,7 +722,7 @@ impl<'a> TyLoweringContext<'a> {
         let trait_ref = match bound {
             TypeBound::Path(path) => {
                 bindings = self.lower_trait_ref_from_path(path, Some(self_ty));
-                bindings.clone().map(WhereClause::Implemented).map(|b| Binders::wrap_empty(b))
+                bindings.clone().map(WhereClause::Implemented).map(|b| crate::wrap_empty_binders(b))
             }
             TypeBound::Lifetime(_) => None,
             TypeBound::Error => None,
@@ -767,7 +769,7 @@ impl<'a> TyLoweringContext<'a> {
                     let ty = self.lower_ty(type_ref);
                     let alias_eq =
                         AliasEq { alias: AliasTy::Projection(projection_ty.clone()), ty };
-                    preds.push(Binders::wrap_empty(WhereClause::AliasEq(alias_eq)));
+                    preds.push(crate::wrap_empty_binders(WhereClause::AliasEq(alias_eq)));
                 }
                 for bound in &binding.bounds {
                     preds.extend(self.lower_type_bound(
diff --git a/crates/hir_ty/src/traits/chalk.rs b/crates/hir_ty/src/traits/chalk.rs
index 075e82f4b..5a8b5cd86 100644
--- a/crates/hir_ty/src/traits/chalk.rs
+++ b/crates/hir_ty/src/traits/chalk.rs
@@ -246,8 +246,8 @@ impl<'a> chalk_solve::RustIrDatabase<Interner> for ChalkContext<'a> {
                     let bound = OpaqueTyDatumBound {
                         bounds: make_binders(
                             vec![
-                                wrap_in_empty_binders(impl_bound).to_chalk(self.db),
-                                wrap_in_empty_binders(proj_bound).to_chalk(self.db),
+                                crate::wrap_empty_binders(impl_bound).to_chalk(self.db),
+                                crate::wrap_empty_binders(proj_bound).to_chalk(self.db),
                             ],
                             1,
                         ),
@@ -723,7 +723,3 @@ impl From<crate::db::InternedClosureId> for chalk_ir::ClosureId<Interner> {
         chalk_ir::ClosureId(id.as_intern_id())
     }
 }
-
-fn wrap_in_empty_binders<T: crate::TypeWalk>(value: T) -> crate::Binders<T> {
-    crate::Binders::wrap_empty(value)
-}