qapi/expr.py: Use tuples instead of lists for static data

It is -- maybe -- possibly -- three nanoseconds faster.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20210421182032.3521476-17-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 0b66d8084218e40b8eac51240d7f801cc07ebd67..225a82e20d32fe5c8fd211698e92e10b3c32863f 100644 (file)
--- a/scripts/qapi/expr.py
+++ b/scripts/qapi/expr.py
@@ -239,11 +239,11 @@ def check_flags(expr: _JSONObject, info: QAPISourceInfo) -> None:
         When certain flags have an invalid value, or when
         incompatible flags are present.
     """
-    for key in ['gen', 'success-response']:
+    for key in ('gen', 'success-response'):
         if key in expr and expr[key] is not False:
             raise QAPISemError(
                 info, "flag '%s' may only use false value" % key)
-    for key in ['boxed', 'allow-oob', 'allow-preconfig', 'coroutine']:
+    for key in ('boxed', 'allow-oob', 'allow-preconfig', 'coroutine'):
         if key in expr and expr[key] is not True:
             raise QAPISemError(
                 info, "flag '%s' may only use true value" % key)