17 files changed, 73 insertions, 75 deletions

diff --git a/crates/hir/src/lib.rs b/crates/hir/src/lib.rs
index fcc577384..29010191b 100644
--- a/crates/hir/src/lib.rs
+++ b/crates/hir/src/lib.rs
@@ -1711,22 +1711,22 @@ impl Type {
     }
 
     pub fn is_unit(&self) -> bool {
-        matches!(self.ty.interned(&Interner), TyKind::Tuple(0, ..))
+        matches!(self.ty.kind(&Interner), TyKind::Tuple(0, ..))
     }
     pub fn is_bool(&self) -> bool {
-        matches!(self.ty.interned(&Interner), TyKind::Scalar(Scalar::Bool))
+        matches!(self.ty.kind(&Interner), TyKind::Scalar(Scalar::Bool))
     }
 
     pub fn is_mutable_reference(&self) -> bool {
-        matches!(self.ty.interned(&Interner), TyKind::Ref(hir_ty::Mutability::Mut, ..))
+        matches!(self.ty.kind(&Interner), TyKind::Ref(hir_ty::Mutability::Mut, ..))
     }
 
     pub fn is_usize(&self) -> bool {
-        matches!(self.ty.interned(&Interner), TyKind::Scalar(Scalar::Uint(UintTy::Usize)))
+        matches!(self.ty.kind(&Interner), TyKind::Scalar(Scalar::Uint(UintTy::Usize)))
     }
 
     pub fn remove_ref(&self) -> Option<Type> {
-        match &self.ty.interned(&Interner) {
+        match &self.ty.kind(&Interner) {
             TyKind::Ref(.., ty) => Some(self.derived(ty.clone())),
             _ => None,
         }
@@ -1855,15 +1855,15 @@ impl Type {
     }
 
     pub fn is_closure(&self) -> bool {
-        matches!(&self.ty.interned(&Interner), TyKind::Closure { .. })
+        matches!(&self.ty.kind(&Interner), TyKind::Closure { .. })
     }
 
     pub fn is_fn(&self) -> bool {
-        matches!(&self.ty.interned(&Interner), TyKind::FnDef(..) | TyKind::Function { .. })
+        matches!(&self.ty.kind(&Interner), TyKind::FnDef(..) | TyKind::Function { .. })
     }
 
     pub fn is_packed(&self, db: &dyn HirDatabase) -> bool {
-        let adt_id = match self.ty.interned(&Interner) {
+        let adt_id = match self.ty.kind(&Interner) {
             &TyKind::Adt(hir_ty::AdtId(adt_id), ..) => adt_id,
             _ => return false,
         };
@@ -1876,14 +1876,14 @@ impl Type {
     }
 
     pub fn is_raw_ptr(&self) -> bool {
-        matches!(&self.ty.interned(&Interner), TyKind::Raw(..))
+        matches!(&self.ty.kind(&Interner), TyKind::Raw(..))
     }
 
     pub fn contains_unknown(&self) -> bool {
         return go(&self.ty);
 
         fn go(ty: &Ty) -> bool {
-            match ty.interned(&Interner) {
+            match ty.kind(&Interner) {
                 TyKind::Unknown => true,
 
                 TyKind::Adt(_, substs)
@@ -1914,7 +1914,7 @@ impl Type {
     }
 
     pub fn fields(&self, db: &dyn HirDatabase) -> Vec<(Field, Type)> {
-        let (variant_id, substs) = match self.ty.interned(&Interner) {
+        let (variant_id, substs) = match self.ty.kind(&Interner) {
             &TyKind::Adt(hir_ty::AdtId(AdtId::StructId(s)), ref substs) => (s.into(), substs),
             &TyKind::Adt(hir_ty::AdtId(AdtId::UnionId(u)), ref substs) => (u.into(), substs),
             _ => return Vec::new(),
@@ -1931,7 +1931,7 @@ impl Type {
     }
 
     pub fn tuple_fields(&self, _db: &dyn HirDatabase) -> Vec<Type> {
-        if let TyKind::Tuple(_, substs) = &self.ty.interned(&Interner) {
+        if let TyKind::Tuple(_, substs) = &self.ty.kind(&Interner) {
             substs
                 .iter(&Interner)
                 .map(|ty| self.derived(ty.assert_ty_ref(&Interner).clone()))
@@ -2120,7 +2120,7 @@ impl Type {
 
         fn walk_type(db: &dyn HirDatabase, type_: &Type, cb: &mut impl FnMut(Type)) {
             let ty = type_.ty.strip_references();
-            match ty.interned(&Interner) {
+            match ty.kind(&Interner) {
                 TyKind::Adt(..) => {
                     cb(type_.derived(ty.clone()));
                 }
diff --git a/crates/hir_ty/src/autoderef.rs b/crates/hir_ty/src/autoderef.rs
index 5e3c018a8..c859f9491 100644
--- a/crates/hir_ty/src/autoderef.rs
+++ b/crates/hir_ty/src/autoderef.rs
@@ -131,7 +131,7 @@ fn deref_by_trait(
             // new variables in that case
 
             for i in 1..vars.0.binders.len(&Interner) {
-                if vars.0.value.at(&Interner, i - 1).assert_ty_ref(&Interner).interned(&Interner)
+                if vars.0.value.at(&Interner, i - 1).assert_ty_ref(&Interner).kind(&Interner)
                     != &TyKind::BoundVar(BoundVar::new(DebruijnIndex::INNERMOST, i - 1))
                 {
                     warn!("complex solution for derefing {:?}: {:?}, ignoring", ty.goal, solution);
diff --git a/crates/hir_ty/src/diagnostics/expr.rs b/crates/hir_ty/src/diagnostics/expr.rs
index 373d1cb74..ad1259b34 100644
--- a/crates/hir_ty/src/diagnostics/expr.rs
+++ b/crates/hir_ty/src/diagnostics/expr.rs
@@ -378,7 +378,7 @@ impl<'a, 'b> ExprValidator<'a, 'b> {
             _ => return,
         };
 
-        let (params, required) = match mismatch.expected.interned(&Interner) {
+        let (params, required) = match mismatch.expected.kind(&Interner) {
             TyKind::Adt(AdtId(hir_def::AdtId::EnumId(enum_id)), ref parameters)
                 if *enum_id == core_result_enum =>
             {
diff --git a/crates/hir_ty/src/diagnostics/match_check.rs b/crates/hir_ty/src/diagnostics/match_check.rs
index 85ba58c44..34291578a 100644
--- a/crates/hir_ty/src/diagnostics/match_check.rs
+++ b/crates/hir_ty/src/diagnostics/match_check.rs
@@ -626,7 +626,7 @@ pub(super) fn is_useful(
     // - enum with no variants
     // - `!` type
     // In those cases, no match arm is useful.
-    match cx.infer[cx.match_expr].strip_references().interned(&Interner) {
+    match cx.infer[cx.match_expr].strip_references().kind(&Interner) {
         TyKind::Adt(AdtId(hir_def::AdtId::EnumId(enum_id)), ..) => {
             if cx.db.enum_data(*enum_id).variants.is_empty() {
                 return Ok(Usefulness::NotUseful);
diff --git a/crates/hir_ty/src/diagnostics/unsafe_check.rs b/crates/hir_ty/src/diagnostics/unsafe_check.rs
index 1f49a4909..a71eebc6f 100644
--- a/crates/hir_ty/src/diagnostics/unsafe_check.rs
+++ b/crates/hir_ty/src/diagnostics/unsafe_check.rs
@@ -110,7 +110,7 @@ fn walk_unsafe(
             }
         }
         Expr::UnaryOp { expr, op: UnaryOp::Deref } => {
-            if let TyKind::Raw(..) = &infer[*expr].interned(&Interner) {
+            if let TyKind::Raw(..) = &infer[*expr].kind(&Interner) {
                 unsafe_exprs.push(UnsafeExpr { expr: current, inside_unsafe_block });
             }
         }
diff --git a/crates/hir_ty/src/display.rs b/crates/hir_ty/src/display.rs
index 59fd18c2a..97f1092c6 100644
--- a/crates/hir_ty/src/display.rs
+++ b/crates/hir_ty/src/display.rs
@@ -292,7 +292,7 @@ impl HirDisplay for Ty {
             return write!(f, "{}", TYPE_HINT_TRUNCATION);
         }
 
-        match self.interned(&Interner) {
+        match self.kind(&Interner) {
             TyKind::Never => write!(f, "!")?,
             TyKind::Str => write!(f, "str")?,
             TyKind::Scalar(Scalar::Bool) => write!(f, "bool")?,
@@ -314,7 +314,7 @@ impl HirDisplay for Ty {
                 let ty_display =
                     t.into_displayable(f.db, f.max_size, f.omit_verbose_types, f.display_target);
 
-                if matches!(self.interned(&Interner), TyKind::Raw(..)) {
+                if matches!(self.kind(&Interner), TyKind::Raw(..)) {
                     write!(
                         f,
                         "*{}",
@@ -336,7 +336,7 @@ impl HirDisplay for Ty {
 
                 // FIXME: all this just to decide whether to use parentheses...
                 let datas;
-                let predicates: Vec<_> = match t.interned(&Interner) {
+                let predicates: Vec<_> = match t.kind(&Interner) {
                     TyKind::Dyn(dyn_ty) if dyn_ty.bounds.skip_binders().interned().len() > 1 => {
                         dyn_ty.bounds.skip_binders().interned().iter().cloned().collect()
                     }
@@ -473,7 +473,7 @@ impl HirDisplay for Ty {
                                 let mut default_from = 0;
                                 for (i, parameter) in parameters.iter(&Interner).enumerate() {
                                     match (
-                                        parameter.assert_ty_ref(&Interner).interned(&Interner),
+                                        parameter.assert_ty_ref(&Interner).kind(&Interner),
                                         default_parameters.get(i),
                                     ) {
                                         (&TyKind::Unknown, _) | (_, None) => {
diff --git a/crates/hir_ty/src/infer.rs b/crates/hir_ty/src/infer.rs
index 674e9e6f9..b871594bd 100644
--- a/crates/hir_ty/src/infer.rs
+++ b/crates/hir_ty/src/infer.rs
@@ -325,7 +325,7 @@ impl<'a> InferenceContext<'a> {
 
     /// Replaces Ty::Unknown by a new type var, so we can maybe still infer it.
     fn insert_type_vars_shallow(&mut self, ty: Ty) -> Ty {
-        match ty.interned(&Interner) {
+        match ty.kind(&Interner) {
             TyKind::Unknown => self.table.new_type_var(),
             _ => ty,
         }
@@ -438,7 +438,7 @@ impl<'a> InferenceContext<'a> {
     /// to do it as well.
     fn normalize_associated_types_in(&mut self, ty: Ty) -> Ty {
         let ty = self.resolve_ty_as_possible(ty);
-        ty.fold(&mut |ty| match ty.interned(&Interner) {
+        ty.fold(&mut |ty| match ty.kind(&Interner) {
             TyKind::Alias(AliasTy::Projection(proj_ty)) => {
                 self.normalize_projection_ty(proj_ty.clone())
             }
diff --git a/crates/hir_ty/src/infer/coerce.rs b/crates/hir_ty/src/infer/coerce.rs
index 8f7322b36..d887e21a2 100644
--- a/crates/hir_ty/src/infer/coerce.rs
+++ b/crates/hir_ty/src/infer/coerce.rs
@@ -36,7 +36,7 @@ impl<'a> InferenceContext<'a> {
             ty1.clone()
         } else {
             if let (TyKind::FnDef(..), TyKind::FnDef(..)) =
-                (ty1.interned(&Interner), ty2.interned(&Interner))
+                (ty1.kind(&Interner), ty2.kind(&Interner))
             {
                 cov_mark::hit!(coerce_fn_reification);
                 // Special case: two function types. Try to coerce both to
@@ -55,7 +55,7 @@ impl<'a> InferenceContext<'a> {
     }
 
     fn coerce_inner(&mut self, mut from_ty: Ty, to_ty: &Ty) -> bool {
-        match (from_ty.interned(&Interner), to_ty.interned(&Interner)) {
+        match (from_ty.kind(&Interner), to_ty.kind(&Interner)) {
             // Never type will make type variable to fallback to Never Type instead of Unknown.
             (TyKind::Never, TyKind::InferenceVar(tv, TyVariableKind::General)) => {
                 self.table.type_variable_table.set_diverging(*tv, true);
@@ -73,7 +73,7 @@ impl<'a> InferenceContext<'a> {
         }
 
         // Pointer weakening and function to pointer
-        match (from_ty.interned_mut(), to_ty.interned(&Interner)) {
+        match (from_ty.interned_mut(), to_ty.kind(&Interner)) {
             // `*mut T` -> `*const T`
             // `&mut T` -> `&T`
             (TyKind::Raw(m1, ..), TyKind::Raw(m2 @ Mutability::Not, ..))
@@ -111,7 +111,7 @@ impl<'a> InferenceContext<'a> {
         }
 
         // Auto Deref if cannot coerce
-        match (from_ty.interned(&Interner), to_ty.interned(&Interner)) {
+        match (from_ty.kind(&Interner), to_ty.kind(&Interner)) {
             // FIXME: DerefMut
             (TyKind::Ref(_, st1), TyKind::Ref(_, st2)) => self.unify_autoderef_behind_ref(st1, st2),
 
diff --git a/crates/hir_ty/src/infer/expr.rs b/crates/hir_ty/src/infer/expr.rs
index b99b6cd21..dd3914ec3 100644
--- a/crates/hir_ty/src/infer/expr.rs
+++ b/crates/hir_ty/src/infer/expr.rs
@@ -455,7 +455,7 @@ impl<'a> InferenceContext<'a> {
                             })
                             .unwrap_or(true)
                     };
-                    match canonicalized.decanonicalize_ty(derefed_ty.value).interned(&Interner) {
+                    match canonicalized.decanonicalize_ty(derefed_ty.value).kind(&Interner) {
                         TyKind::Tuple(_, substs) => name.as_tuple_index().and_then(|idx| {
                             substs
                                 .interned(&Interner)
@@ -577,7 +577,7 @@ impl<'a> InferenceContext<'a> {
                         None => self.err_ty(),
                     },
                     UnaryOp::Neg => {
-                        match inner_ty.interned(&Interner) {
+                        match inner_ty.kind(&Interner) {
                             // Fast path for builtins
                             TyKind::Scalar(Scalar::Int(_))
                             | TyKind::Scalar(Scalar::Uint(_))
@@ -590,7 +590,7 @@ impl<'a> InferenceContext<'a> {
                         }
                     }
                     UnaryOp::Not => {
-                        match inner_ty.interned(&Interner) {
+                        match inner_ty.kind(&Interner) {
                             // Fast path for builtins
                             TyKind::Scalar(Scalar::Bool)
                             | TyKind::Scalar(Scalar::Int(_))
@@ -696,7 +696,7 @@ impl<'a> InferenceContext<'a> {
                 }
             }
             Expr::Tuple { exprs } => {
-                let mut tys = match expected.ty.interned(&Interner) {
+                let mut tys = match expected.ty.kind(&Interner) {
                     TyKind::Tuple(_, substs) => substs
                         .iter(&Interner)
                         .map(|a| a.assert_ty_ref(&Interner).clone())
@@ -713,7 +713,7 @@ impl<'a> InferenceContext<'a> {
                 TyKind::Tuple(tys.len(), Substitution::from_iter(&Interner, tys)).intern(&Interner)
             }
             Expr::Array(array) => {
-                let elem_ty = match expected.ty.interned(&Interner) {
+                let elem_ty = match expected.ty.kind(&Interner) {
                     TyKind::Array(st) | TyKind::Slice(st) => st.clone(),
                     _ => self.table.new_type_var(),
                 };
@@ -961,7 +961,7 @@ impl<'a> InferenceContext<'a> {
     }
 
     fn register_obligations_for_call(&mut self, callable_ty: &Ty) {
-        if let TyKind::FnDef(fn_def, parameters) = callable_ty.interned(&Interner) {
+        if let TyKind::FnDef(fn_def, parameters) = callable_ty.kind(&Interner) {
             let def: CallableDefId = from_chalk(self.db, *fn_def);
             let generic_predicates = self.db.generic_predicates(def.into());
             for predicate in generic_predicates.iter() {
diff --git a/crates/hir_ty/src/infer/pat.rs b/crates/hir_ty/src/infer/pat.rs
index f1316415f..10df8d8cb 100644
--- a/crates/hir_ty/src/infer/pat.rs
+++ b/crates/hir_ty/src/infer/pat.rs
@@ -211,7 +211,7 @@ impl<'a> InferenceContext<'a> {
                 return inner_ty;
             }
             Pat::Slice { prefix, slice, suffix } => {
-                let (container_ty, elem_ty): (fn(_) -> _, _) = match expected.interned(&Interner) {
+                let (container_ty, elem_ty): (fn(_) -> _, _) = match expected.kind(&Interner) {
                     TyKind::Array(st) => (TyKind::Array, st.clone()),
                     TyKind::Slice(st) => (TyKind::Slice, st.clone()),
                     _ => (TyKind::Slice, self.err_ty()),
diff --git a/crates/hir_ty/src/infer/path.rs b/crates/hir_ty/src/infer/path.rs
index b96391776..1ba15f737 100644
--- a/crates/hir_ty/src/infer/path.rs
+++ b/crates/hir_ty/src/infer/path.rs
@@ -147,7 +147,7 @@ impl<'a> InferenceContext<'a> {
                     remaining_segments_for_ty,
                     true,
                 );
-                if let TyKind::Unknown = ty.interned(&Interner) {
+                if let TyKind::Unknown = ty.kind(&Interner) {
                     return None;
                 }
 
@@ -212,7 +212,7 @@ impl<'a> InferenceContext<'a> {
         name: &Name,
         id: ExprOrPatId,
     ) -> Option<(ValueNs, Option<Substitution>)> {
-        if let TyKind::Unknown = ty.interned(&Interner) {
+        if let TyKind::Unknown = ty.kind(&Interner) {
             return None;
         }
 
diff --git a/crates/hir_ty/src/infer/unify.rs b/crates/hir_ty/src/infer/unify.rs
index 0efc62e53..d2496db3b 100644
--- a/crates/hir_ty/src/infer/unify.rs
+++ b/crates/hir_ty/src/infer/unify.rs
@@ -49,7 +49,7 @@ impl<'a, 'b> Canonicalizer<'a, 'b> {
 
     fn do_canonicalize<T: TypeWalk>(&mut self, t: T, binders: DebruijnIndex) -> T {
         t.fold_binders(
-            &mut |ty, binders| match ty.interned(&Interner) {
+            &mut |ty, binders| match ty.kind(&Interner) {
                 &TyKind::InferenceVar(var, kind) => {
                     let inner = var.to_inner();
                     if self.var_stack.contains(&inner) {
@@ -304,7 +304,7 @@ impl InferenceTable {
         let ty1 = self.resolve_ty_shallow(ty1);
         let ty2 = self.resolve_ty_shallow(ty2);
         if ty1.equals_ctor(&ty2) {
-            match (ty1.interned(&Interner), ty2.interned(&Interner)) {
+            match (ty1.kind(&Interner), ty2.kind(&Interner)) {
                 (TyKind::Adt(_, substs1), TyKind::Adt(_, substs2))
                 | (TyKind::FnDef(_, substs1), TyKind::FnDef(_, substs2))
                 | (
@@ -329,7 +329,7 @@ impl InferenceTable {
     }
 
     pub(super) fn unify_inner_trivial(&mut self, ty1: &Ty, ty2: &Ty, depth: usize) -> bool {
-        match (ty1.interned(&Interner), ty2.interned(&Interner)) {
+        match (ty1.kind(&Interner), ty2.kind(&Interner)) {
             (TyKind::Unknown, _) | (_, TyKind::Unknown) => true,
 
             (TyKind::Placeholder(p1), TyKind::Placeholder(p2)) if *p1 == *p2 => true,
@@ -458,7 +458,7 @@ impl InferenceTable {
             if i > 0 {
                 cov_mark::hit!(type_var_resolves_to_int_var);
             }
-            match ty.interned(&Interner) {
+            match ty.kind(&Interner) {
                 TyKind::InferenceVar(tv, _) => {
                     let inner = tv.to_inner();
                     match self.var_unification_table.inlined_probe_value(inner).known() {
@@ -481,7 +481,7 @@ impl InferenceTable {
     /// be resolved as far as possible, i.e. contain no type variables with
     /// known type.
     fn resolve_ty_as_possible_inner(&mut self, tv_stack: &mut Vec<TypeVarId>, ty: Ty) -> Ty {
-        ty.fold(&mut |ty| match ty.interned(&Interner) {
+        ty.fold(&mut |ty| match ty.kind(&Interner) {
             &TyKind::InferenceVar(tv, kind) => {
                 let inner = tv.to_inner();
                 if tv_stack.contains(&inner) {
@@ -508,7 +508,7 @@ impl InferenceTable {
     /// Resolves the type completely; type variables without known type are
     /// replaced by TyKind::Unknown.
     fn resolve_ty_completely_inner(&mut self, tv_stack: &mut Vec<TypeVarId>, ty: Ty) -> Ty {
-        ty.fold(&mut |ty| match ty.interned(&Interner) {
+        ty.fold(&mut |ty| match ty.kind(&Interner) {
             &TyKind::InferenceVar(tv, kind) => {
                 let inner = tv.to_inner();
                 if tv_stack.contains(&inner) {
diff --git a/crates/hir_ty/src/lib.rs b/crates/hir_ty/src/lib.rs
index c927ed973..4c3d904bf 100644
--- a/crates/hir_ty/src/lib.rs
+++ b/crates/hir_ty/src/lib.rs
@@ -312,7 +312,7 @@ impl TyKind {
 }
 
 impl Ty {
-    pub fn interned(&self, _interner: &Interner) -> &TyKind {
+    pub fn kind(&self, _interner: &Interner) -> &TyKind {
         &self.0
     }
 
@@ -846,14 +846,14 @@ impl Ty {
     }
 
     pub fn as_reference(&self) -> Option<(&Ty, Mutability)> {
-        match self.interned(&Interner) {
+        match self.kind(&Interner) {
             TyKind::Ref(mutability, ty) => Some((ty, *mutability)),
             _ => None,
         }
     }
 
     pub fn as_reference_or_ptr(&self) -> Option<(&Ty, Rawness, Mutability)> {
-        match self.interned(&Interner) {
+        match self.kind(&Interner) {
             TyKind::Ref(mutability, ty) => Some((ty, Rawness::Ref, *mutability)),
             TyKind::Raw(mutability, ty) => Some((ty, Rawness::RawPtr, *mutability)),
             _ => None,
@@ -863,7 +863,7 @@ impl Ty {
     pub fn strip_references(&self) -> &Ty {
         let mut t: &Ty = self;
 
-        while let TyKind::Ref(_mutability, ty) = t.interned(&Interner) {
+        while let TyKind::Ref(_mutability, ty) = t.kind(&Interner) {
             t = ty;
         }
 
@@ -871,21 +871,21 @@ impl Ty {
     }
 
     pub fn as_adt(&self) -> Option<(hir_def::AdtId, &Substitution)> {
-        match self.interned(&Interner) {
+        match self.kind(&Interner) {
             TyKind::Adt(AdtId(adt), parameters) => Some((*adt, parameters)),
             _ => None,
         }
     }
 
     pub fn as_tuple(&self) -> Option<&Substitution> {
-        match self.interned(&Interner) {
+        match self.kind(&Interner) {
             TyKind::Tuple(_, substs) => Some(substs),
             _ => None,
         }
     }
 
     pub fn as_generic_def(&self, db: &dyn HirDatabase) -> Option<GenericDefId> {
-        match *self.interned(&Interner) {
+        match *self.kind(&Interner) {
             TyKind::Adt(AdtId(adt), ..) => Some(adt.into()),
             TyKind::FnDef(callable, ..) => {
                 Some(db.lookup_intern_callable_def(callable.into()).into())
@@ -897,15 +897,15 @@ impl Ty {
     }
 
     pub fn is_never(&self) -> bool {
-        matches!(self.interned(&Interner), TyKind::Never)
+        matches!(self.kind(&Interner), TyKind::Never)
     }
 
     pub fn is_unknown(&self) -> bool {
-        matches!(self.interned(&Interner), TyKind::Unknown)
+        matches!(self.kind(&Interner), TyKind::Unknown)
     }
 
     pub fn equals_ctor(&self, other: &Ty) -> bool {
-        match (self.interned(&Interner), other.interned(&Interner)) {
+        match (self.kind(&Interner), other.kind(&Interner)) {
             (TyKind::Adt(adt, ..), TyKind::Adt(adt2, ..)) => adt == adt2,
             (TyKind::Slice(_), TyKind::Slice(_)) | (TyKind::Array(_), TyKind::Array(_)) => true,
             (TyKind::FnDef(def_id, ..), TyKind::FnDef(def_id2, ..)) => def_id == def_id2,
@@ -934,7 +934,7 @@ impl Ty {
 
     /// If this is a `dyn Trait` type, this returns the `Trait` part.
     fn dyn_trait_ref(&self) -> Option<&TraitRef> {
-        match self.interned(&Interner) {
+        match self.kind(&Interner) {
             TyKind::Dyn(dyn_ty) => {
                 dyn_ty.bounds.value.interned().get(0).and_then(|b| match b.skip_binders() {
                     WhereClause::Implemented(trait_ref) => Some(trait_ref),
@@ -951,7 +951,7 @@ impl Ty {
     }
 
     fn builtin_deref(&self) -> Option<Ty> {
-        match self.interned(&Interner) {
+        match self.kind(&Interner) {
             TyKind::Ref(.., ty) => Some(ty.clone()),
             TyKind::Raw(.., ty) => Some(ty.clone()),
             _ => None,
@@ -959,7 +959,7 @@ impl Ty {
     }
 
     pub fn callable_def(&self, db: &dyn HirDatabase) -> Option<CallableDefId> {
-        match self.interned(&Interner) {
+        match self.kind(&Interner) {
             &TyKind::FnDef(def, ..) => Some(db.lookup_intern_callable_def(def.into())),
             _ => None,
         }
@@ -974,7 +974,7 @@ impl Ty {
     }
 
     pub fn callable_sig(&self, db: &dyn HirDatabase) -> Option<CallableSig> {
-        match self.interned(&Interner) {
+        match self.kind(&Interner) {
             TyKind::Function(fn_ptr) => Some(CallableSig::from_fn_ptr(fn_ptr)),
             TyKind::FnDef(def, parameters) => {
                 let callable_def = db.lookup_intern_callable_def((*def).into());
@@ -992,7 +992,7 @@ impl Ty {
     /// Returns the type parameters of this type if it has some (i.e. is an ADT
     /// or function); so if `self` is `Option<u32>`, this returns the `u32`.
     pub fn substs(&self) -> Option<&Substitution> {
-        match self.interned(&Interner) {
+        match self.kind(&Interner) {
             TyKind::Adt(_, substs)
             | TyKind::FnDef(_, substs)
             | TyKind::Function(FnPointer { substs, .. })
@@ -1018,7 +1018,7 @@ impl Ty {
     }
 
     pub fn impl_trait_bounds(&self, db: &dyn HirDatabase) -> Option<Vec<QuantifiedWhereClause>> {
-        match self.interned(&Interner) {
+        match self.kind(&Interner) {
             TyKind::OpaqueType(opaque_ty_id, ..) => {
                 match db.lookup_intern_impl_trait_id((*opaque_ty_id).into()) {
                     ImplTraitId::AsyncBlockTypeImplTrait(def, _expr) => {
@@ -1093,7 +1093,7 @@ impl Ty {
     }
 
     pub fn associated_type_parent_trait(&self, db: &dyn HirDatabase) -> Option<TraitId> {
-        match self.interned(&Interner) {
+        match self.kind(&Interner) {
             TyKind::AssociatedType(id, ..) => {
                 match from_assoc_type_id(*id).lookup(db.upcast()).container {
                     AssocContainerId::TraitId(trait_id) => Some(trait_id),
@@ -1201,7 +1201,7 @@ pub trait TypeWalk {
         Self: Sized,
     {
         self.fold_binders(
-            &mut |ty, binders| match ty.interned(&Interner) {
+            &mut |ty, binders| match ty.kind(&Interner) {
                 TyKind::BoundVar(bound) if bound.debruijn >= binders => {
                     TyKind::BoundVar(bound.shifted_in_from(n)).intern(&Interner)
                 }
@@ -1217,7 +1217,7 @@ pub trait TypeWalk {
         Self: Sized + std::fmt::Debug,
     {
         self.fold_binders(
-            &mut |ty, binders| match ty.interned(&Interner) {
+            &mut |ty, binders| match ty.kind(&Interner) {
                 TyKind::BoundVar(bound) if bound.debruijn >= binders => {
                     TyKind::BoundVar(bound.shifted_out_to(n).unwrap_or(bound.clone()))
                         .intern(&Interner)
@@ -1231,7 +1231,7 @@ pub trait TypeWalk {
 
 impl TypeWalk for Ty {
     fn walk(&self, f: &mut impl FnMut(&Ty)) {
-        match self.interned(&Interner) {
+        match self.kind(&Interner) {
             TyKind::Alias(AliasTy::Projection(p_ty)) => {
                 for t in p_ty.substitution.iter(&Interner) {
                     t.walk(f);
diff --git a/crates/hir_ty/src/method_resolution.rs b/crates/hir_ty/src/method_resolution.rs
index 054896475..338851fa8 100644
--- a/crates/hir_ty/src/method_resolution.rs
+++ b/crates/hir_ty/src/method_resolution.rs
@@ -47,7 +47,7 @@ impl TyFingerprint {
     /// have impls: if we have some `struct S`, we can have an `impl S`, but not
     /// `impl &S`. Hence, this will return `None` for reference types and such.
     pub fn for_impl(ty: &Ty) -> Option<TyFingerprint> {
-        let fp = match *ty.interned(&Interner) {
+        let fp = match *ty.kind(&Interner) {
             TyKind::Str => TyFingerprint::Str,
             TyKind::Never => TyFingerprint::Never,
             TyKind::Slice(..) => TyFingerprint::Slice,
@@ -243,7 +243,7 @@ impl Ty {
 
         let mod_to_crate_ids = |module: ModuleId| Some(std::iter::once(module.krate()).collect());
 
-        let lang_item_targets = match self.interned(&Interner) {
+        let lang_item_targets = match self.kind(&Interner) {
             TyKind::Adt(AdtId(def_id), _) => {
                 return mod_to_crate_ids(def_id.module(db.upcast()));
             }
@@ -563,7 +563,7 @@ fn iterate_trait_method_candidates(
     // if ty is `dyn Trait`, the trait doesn't need to be in scope
     let inherent_trait =
         self_ty.value.dyn_trait().into_iter().flat_map(|t| all_super_traits(db.upcast(), t));
-    let env_traits = if let TyKind::Placeholder(_) = self_ty.value.interned(&Interner) {
+    let env_traits = if let TyKind::Placeholder(_) = self_ty.value.kind(&Interner) {
         // if we have `T: Trait` in the param env, the trait doesn't need to be in scope
         env.traits_in_scope_from_clauses(&self_ty.value)
             .flat_map(|t| all_super_traits(db.upcast(), t))
@@ -741,7 +741,7 @@ pub(crate) fn inherent_impl_substs(
 fn fallback_bound_vars(s: Substitution, num_vars_to_keep: usize) -> Substitution {
     s.fold_binders(
         &mut |ty, binders| {
-            if let TyKind::BoundVar(bound) = ty.interned(&Interner) {
+            if let TyKind::BoundVar(bound) = ty.kind(&Interner) {
                 if bound.index >= num_vars_to_keep && bound.debruijn >= binders {
                     TyKind::Unknown.intern(&Interner)
                 } else {
@@ -839,9 +839,7 @@ fn autoderef_method_receiver(
 ) -> Vec<Canonical<Ty>> {
     let mut deref_chain: Vec<_> = autoderef::autoderef(db, Some(krate), ty).collect();
     // As a last step, we can do array unsizing (that's the only unsizing that rustc does for method receivers!)
-    if let Some(TyKind::Array(parameters)) =
-        deref_chain.last().map(|ty| ty.value.interned(&Interner))
-    {
+    if let Some(TyKind::Array(parameters)) = deref_chain.last().map(|ty| ty.value.kind(&Interner)) {
         let kinds = deref_chain.last().unwrap().binders.clone();
         let unsized_ty = TyKind::Slice(parameters.clone()).intern(&Interner);
         deref_chain.push(Canonical { value: unsized_ty, binders: kinds })
diff --git a/crates/hir_ty/src/op.rs b/crates/hir_ty/src/op.rs
index 527c5cbbd..8533e1ed8 100644
--- a/crates/hir_ty/src/op.rs
+++ b/crates/hir_ty/src/op.rs
@@ -9,7 +9,7 @@ pub(super) fn binary_op_return_ty(op: BinaryOp, lhs_ty: Ty, rhs_ty: Ty) -> Ty {
         BinaryOp::LogicOp(_) | BinaryOp::CmpOp(_) => TyKind::Scalar(Scalar::Bool).intern(&Interner),
         BinaryOp::Assignment { .. } => Ty::unit(),
         BinaryOp::ArithOp(ArithOp::Shl) | BinaryOp::ArithOp(ArithOp::Shr) => {
-            match lhs_ty.interned(&Interner) {
+            match lhs_ty.kind(&Interner) {
                 TyKind::Scalar(Scalar::Int(_))
                 | TyKind::Scalar(Scalar::Uint(_))
                 | TyKind::Scalar(Scalar::Float(_)) => lhs_ty,
@@ -18,7 +18,7 @@ pub(super) fn binary_op_return_ty(op: BinaryOp, lhs_ty: Ty, rhs_ty: Ty) -> Ty {
                 _ => TyKind::Unknown.intern(&Interner),
             }
         }
-        BinaryOp::ArithOp(_) => match rhs_ty.interned(&Interner) {
+        BinaryOp::ArithOp(_) => match rhs_ty.kind(&Interner) {
             TyKind::Scalar(Scalar::Int(_))
             | TyKind::Scalar(Scalar::Uint(_))
             | TyKind::Scalar(Scalar::Float(_)) => rhs_ty,
@@ -33,7 +33,7 @@ pub(super) fn binary_op_rhs_expectation(op: BinaryOp, lhs_ty: Ty) -> Ty {
     match op {
         BinaryOp::LogicOp(..) => TyKind::Scalar(Scalar::Bool).intern(&Interner),
         BinaryOp::Assignment { op: None } => lhs_ty,
-        BinaryOp::CmpOp(CmpOp::Eq { .. }) => match lhs_ty.interned(&Interner) {
+        BinaryOp::CmpOp(CmpOp::Eq { .. }) => match lhs_ty.kind(&Interner) {
             TyKind::Scalar(_) | TyKind::Str => lhs_ty,
             TyKind::InferenceVar(_, TyVariableKind::Integer)
             | TyKind::InferenceVar(_, TyVariableKind::Float) => lhs_ty,
@@ -44,7 +44,7 @@ pub(super) fn binary_op_rhs_expectation(op: BinaryOp, lhs_ty: Ty) -> Ty {
         }
         BinaryOp::CmpOp(CmpOp::Ord { .. })
         | BinaryOp::Assignment { op: Some(_) }
-        | BinaryOp::ArithOp(_) => match lhs_ty.interned(&Interner) {
+        | BinaryOp::ArithOp(_) => match lhs_ty.kind(&Interner) {
             TyKind::Scalar(Scalar::Int(_))
             | TyKind::Scalar(Scalar::Uint(_))
             | TyKind::Scalar(Scalar::Float(_)) => lhs_ty,
diff --git a/crates/hir_ty/src/traits.rs b/crates/hir_ty/src/traits.rs
index a15b6486e..e5e8cff33 100644
--- a/crates/hir_ty/src/traits.rs
+++ b/crates/hir_ty/src/traits.rs
@@ -138,7 +138,7 @@ pub(crate) fn trait_solve_query(
         ..
     })) = &goal.value.goal
     {
-        if let TyKind::BoundVar(_) = projection_ty.self_type_parameter().interned(&Interner) {
+        if let TyKind::BoundVar(_) = projection_ty.self_type_parameter().kind(&Interner) {
             // Hack: don't ask Chalk to normalize with an unknown self type, it'll say that's impossible
             return Some(Solution::Ambig(Guidance::Unknown));
         }
diff --git a/crates/hir_ty/src/traits/chalk.rs b/crates/hir_ty/src/traits/chalk.rs
index cf7ed1e11..fbac51b05 100644
--- a/crates/hir_ty/src/traits/chalk.rs
+++ b/crates/hir_ty/src/traits/chalk.rs
@@ -92,7 +92,7 @@ impl<'a> chalk_solve::RustIrDatabase<Interner> for ChalkContext<'a> {
             ty: &Ty,
             binders: &CanonicalVarKinds<Interner>,
         ) -> Option<chalk_ir::TyVariableKind> {
-            if let TyKind::BoundVar(bv) = ty.interned(&Interner) {
+            if let TyKind::BoundVar(bv) = ty.kind(&Interner) {
                 let binders = binders.as_slice(&Interner);
                 if bv.debruijn == DebruijnIndex::INNERMOST {
                     if let chalk_ir::VariableKind::Ty(tk) = binders[bv.index].kind {