qapi/expr.py: Add assertion for union type 'check_dict'

mypy isn't fond of allowing you to check for bool membership in a
collection of str elements. Guard this lookup for precisely when we were
given a name.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20210421182032.3521476-6-jsnow@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

diff --git a/scripts/qapi/expr.py b/scripts/qapi/expr.py
index 06a0081..3ab78a5 100644 (file)
--- a/scripts/qapi/expr.py
+++ b/scripts/qapi/expr.py
@@ -194,7 +194,9 @@ def check_type(value, info, source,
         raise QAPISemError(info,
                            "%s should be an object or type name" % source)
 
-    permissive = allow_dict in info.pragma.member_name_exceptions
+    permissive = False
+    if isinstance(allow_dict, str):
+        permissive = allow_dict in info.pragma.member_name_exceptions
 
     # value is a dictionary, check that each member is okay
     for (key, arg) in value.items():