Add expressions and statements as supertypes

Author: ZedThree

grammar.js

@@ -103,6 +103,11 @@ module.exports = grammar({
     [$.cray_pointer_declaration, $.identifier],
   ],
 
+  supertypes: $ => [
+    $._expression,
+    $._statements,
+  ],
+
   rules: {
     translation_unit: $ => seq(
       repeat($._top_level_item),

src/grammar.json

@@ -21569,6 +21569,9 @@
     "_top_level_item",
     "_statement"
   ],
-  "supertypes": [],
+  "supertypes": [
+    "_expression",
+    "_statements"
+  ],
   "reserved": {}
 }