Finalize impl Grammar

crates/ra_parser/src/grammar.rs

@@ -150,7 +150,7 @@ pub(crate) fn reparser(
         EXTERN_ITEM_LIST => items::extern_item_list,
         TOKEN_TREE if first_child? == T!['{'] => items::token_tree,
         ASSOC_ITEM_LIST => match parent? {
-            IMPL_DEF => items::impl_item_list,
+            IMPL => items::impl_item_list,
             TRAIT => items::trait_item_list,
             _ => return None,
         },

crates/ra_parser/src/grammar/items.rs

@@ -221,7 +221,7 @@ pub(super) fn maybe_item(p: &mut Parser, m: Marker, flavor: ItemFlavor) -> Resul
         // unsafe default impl Foo {}
         T![impl] => {
             traits::impl_def(p);
-            m.complete(p, IMPL_DEF);
+            m.complete(p, IMPL);
         }
 
         // test existential_type

crates/ra_parser/src/syntax_kind/generated.rs

@@ -134,7 +134,7 @@ pub enum SyntaxKind {
     STATIC,
     CONST,
     TRAIT,
-    IMPL_DEF,
+    IMPL,
     TYPE_ALIAS,
     MACRO_CALL,
     TOKEN_TREE,