3 files changed, 19 insertions, 20 deletions

diff --git a/crates/ra_hir_ty/src/traits/chalk.rs b/crates/ra_hir_ty/src/traits/chalk.rs
index 7f8ba2f12..1ef5baa05 100644
--- a/crates/ra_hir_ty/src/traits/chalk.rs
+++ b/crates/ra_hir_ty/src/traits/chalk.rs
@@ -552,18 +552,6 @@ pub(crate) fn fn_def_datum_query(
     Arc::new(datum)
 }
 
-impl From<AdtId> for crate::TypeCtorId {
-    fn from(struct_id: AdtId) -> Self {
-        struct_id.0
-    }
-}
-
-impl From<crate::TypeCtorId> for AdtId {
-    fn from(type_ctor_id: crate::TypeCtorId) -> Self {
-        chalk_ir::AdtId(type_ctor_id)
-    }
-}
-
 impl From<FnDefId> for crate::CallableDefId {
     fn from(fn_def_id: FnDefId) -> Self {
         InternKey::from_intern_id(fn_def_id.0)
diff --git a/crates/ra_hir_ty/src/traits/chalk/interner.rs b/crates/ra_hir_ty/src/traits/chalk/interner.rs
index 156b691b4..8d4c51a8f 100644
--- a/crates/ra_hir_ty/src/traits/chalk/interner.rs
+++ b/crates/ra_hir_ty/src/traits/chalk/interner.rs
@@ -41,7 +41,7 @@ impl chalk_ir::interner::Interner for Interner {
     type InternedCanonicalVarKinds = Vec<chalk_ir::CanonicalVarKind<Self>>;
     type InternedConstraints = Vec<chalk_ir::InEnvironment<chalk_ir::Constraint<Self>>>;
     type DefId = InternId;
-    type InternedAdtId = crate::TypeCtorId;
+    type InternedAdtId = hir_def::AdtId;
     type Identifier = TypeAliasId;
     type FnAbi = ();
 
@@ -364,6 +364,18 @@ impl chalk_ir::interner::Interner for Interner {
     ) -> &'a [chalk_ir::InEnvironment<chalk_ir::Constraint<Self>>] {
         constraints
     }
+    fn debug_closure_id(
+        _fn_def_id: chalk_ir::ClosureId<Self>,
+        _fmt: &mut fmt::Formatter<'_>,
+    ) -> Option<fmt::Result> {
+        None
+    }
+    fn debug_constraints(
+        _clauses: &chalk_ir::Constraints<Self>,
+        _fmt: &mut fmt::Formatter<'_>,
+    ) -> Option<fmt::Result> {
+        None
+    }
 }
 
 impl chalk_ir::interner::HasInterner for Interner {
diff --git a/crates/ra_hir_ty/src/traits/chalk/mapping.rs b/crates/ra_hir_ty/src/traits/chalk/mapping.rs
index 796947e69..a852ce2ac 100644
--- a/crates/ra_hir_ty/src/traits/chalk/mapping.rs
+++ b/crates/ra_hir_ty/src/traits/chalk/mapping.rs
@@ -316,20 +316,19 @@ impl ToChalk for TypeCtor {
                 TypeName::Closure(closure_id.into())
             }
 
-            TypeCtor::FnPtr { .. } => panic!("Trying to convert FnPtr to TypeName"),
+            TypeCtor::Adt(adt_id) => TypeName::Adt(chalk_ir::AdtId(adt_id)),
 
-            TypeCtor::Adt(_) => {
-                // FIXME no interning needed anymore
-                // other TypeCtors get interned and turned into a chalk StructId
-                let struct_id = db.intern_type_ctor(self).into();
-                TypeName::Adt(struct_id)
+            TypeCtor::FnPtr { .. } => {
+                // This should not be reached, since Chalk doesn't represent
+                // function pointers with TypeName
+                unreachable!()
             }
         }
     }
 
     fn from_chalk(db: &dyn HirDatabase, type_name: TypeName<Interner>) -> TypeCtor {
         match type_name {
-            TypeName::Adt(struct_id) => db.lookup_intern_type_ctor(struct_id.into()),
+            TypeName::Adt(struct_id) => TypeCtor::Adt(struct_id.0),
             TypeName::AssociatedType(type_id) => TypeCtor::AssociatedType(from_chalk(db, type_id)),
             TypeName::OpaqueType(opaque_type_id) => {
                 TypeCtor::OpaqueType(from_chalk(db, opaque_type_id))