Remove get_index_and_execute and use something else

jedi/inference/gradual/generics.py

@@ -3,9 +3,10 @@ This module is about generics, like the `int` in `List[int]`. It's not about
 the Generic class.
 """
 
+from jedi import debug
 from jedi.cache import memoize_method
 from jedi.inference.utils import to_tuple
-from jedi.inference.base_value import ValueSet
+from jedi.inference.base_value import ValueSet, NO_VALUES
 from jedi.inference.value.iterable import SequenceLiteralValue
 from jedi.inference.helpers import is_string
 
@@ -22,7 +23,16 @@ def _resolve_forward_references(context, value_set):
             yield value
 
 
-class LazyGenericManager(object):
+class _AbstractGenericManager(object):
+    def get_index_and_execute(self, index):
+        try:
+            return self[index].execute_annotation()
+        except IndexError:
+            debug.warning('No param #%s found for annotation %s', index, self)
+            return NO_VALUES
+
+
+class LazyGenericManager(_AbstractGenericManager):
     def __init__(self, context_of_index, index_value):
         self._context_of_index = context_of_index
         self._index_value = index_value
@@ -65,7 +75,7 @@ class LazyGenericManager(object):
         return False
 
 
-class TupleGenericManager(object):
+class TupleGenericManager(_AbstractGenericManager):
     def __init__(self, tup):
         self._tuple = tup