refactor general array lookup method get_index_types

jedi/evaluate/compiled/__init__.py

@@ -99,7 +99,7 @@ class CompiledObject(Base):
         else:
             raise KeyError("CompiledObject doesn't have an attribute '%s'." % name)
 
-    def get_index_types(self, index_types):
+    def get_index_types(self, evaluator, index_array):
         # If the object doesn't have `__getitem__`, just raise the
         # AttributeError.
         if not hasattr(self.obj, '__getitem__'):
@@ -110,7 +110,8 @@ class CompiledObject(Base):
             return []
 
         result = []
-        for typ in index_types:
+        from jedi.evaluate.iterable import create_indexes_or_slices
+        for typ in create_indexes_or_slices(evaluator, index_array):
             index = None
             try:
                 index = typ.obj