[ngcodegen][model] guard against odd params in rules

neogeny · Dec 11, 2023 · 9cad6e6 · 9cad6e6
1 parent c13a967
commit 9cad6e6
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/tatsu/ngcodegen/objectmodel.py b/tatsu/ngcodegen/objectmodel.py
@@ -138,7 +138,9 @@ def _gen_rule_class(self, rule: grammars.Rule, specs: list[BaseClassSpec]):
                 self.print(f'{arg}: Any = None')
 
     def _base_class_specs(self, rule: grammars.Rule) -> list[BaseClassSpec]:
-        spec = rule.params[0].split('::') if rule.params else []
+        if not rule.params or not isinstance(rule.params[0], str):
+            return []
+        spec = rule.params[0].split('::')
         base = [self._model_base_name()]
         class_names = [safe_name(n) for n in spec] + base
         return [