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From: John Snow <jsnow@redhat.com>
To: qemu-devel@nongnu.org
Cc: "Marc-André Lureau" <marcandre.lureau@redhat.com>,
	"Cleber Rosa" <crosa@redhat.com>, "John Snow" <jsnow@redhat.com>,
	"Eduardo Habkost" <ehabkost@redhat.com>,
	"Markus Armbruster" <armbru@redhat.com>
Subject: [PATCH 03/12] qapi/main: handle theoretical None-return from re.match()
Date: Mon, 14 Dec 2020 18:53:18 -0500	[thread overview]
Message-ID: <20201214235327.1007124-4-jsnow@redhat.com> (raw)
In-Reply-To: <20201214235327.1007124-1-jsnow@redhat.com>

Mypy cannot understand that this match can never be None, so help it
along.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 scripts/qapi/main.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/scripts/qapi/main.py b/scripts/qapi/main.py
index 42517210b805..271d9e84da94 100644
--- a/scripts/qapi/main.py
+++ b/scripts/qapi/main.py
@@ -23,7 +23,8 @@
 
 def invalid_prefix_char(prefix: str) -> Optional[str]:
     match = re.match(r'([A-Za-z_.-][A-Za-z0-9_.-]*)?', prefix)
-    if match.end() != len(prefix):
+    # match cannot be None, but mypy cannot infer that.
+    if match and match.end() != len(prefix):
         return prefix[match.end()]
     return None
 
-- 
2.26.2



  parent reply	other threads:[~2020-12-14 23:54 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-14 23:53 [PATCH 00/12] qapi: static typing conversion, pt1.5 John Snow
2020-12-14 23:53 ` [PATCH 01/12] qapi/commands: assert arg_type is not None John Snow
2020-12-14 23:53 ` [PATCH 02/12] qapi/events: fix visit_event typing John Snow
2020-12-14 23:53 ` John Snow [this message]
2020-12-16  8:23   ` [PATCH 03/12] qapi/main: handle theoretical None-return from re.match() Markus Armbruster
2020-12-16 17:11     ` John Snow
2020-12-14 23:53 ` [PATCH 04/12] qapi/gen: assert that _start_if is not None in _wrap_ifcond John Snow
2020-12-16  8:26   ` Markus Armbruster
2020-12-16 17:13     ` John Snow
2020-12-17  7:24       ` Markus Armbruster
2020-12-14 23:53 ` [PATCH 05/12] qapi/gen: use './builtin' for the built-in module name John Snow
2020-12-16  8:35   ` Markus Armbruster
2020-12-16 17:27     ` John Snow
2020-12-14 23:53 ` [PATCH 06/12] qapi/source: Add builtin null-object sentinel John Snow
2020-12-16  9:22   ` Markus Armbruster
2020-12-16 17:53     ` John Snow
2020-12-17 12:33       ` Markus Armbruster
2020-12-18 19:14         ` John Snow
2020-12-16 19:11     ` John Snow
2020-12-17 11:56       ` Markus Armbruster
2020-12-18 19:22         ` John Snow
2020-12-14 23:53 ` [PATCH 07/12] qapi/gen: write _genc/_genh access shims John Snow
2020-12-14 23:53 ` [PATCH 08/12] qapi/schema: make QAPISourceInfo mandatory John Snow
2020-12-16 10:18   ` Markus Armbruster
2020-12-16 18:41     ` John Snow
2020-12-17  8:02       ` Markus Armbruster
2020-12-17 17:02         ` John Snow
2020-12-18  5:24           ` Markus Armbruster
2020-12-18 19:17             ` John Snow
2020-12-18 20:57               ` Markus Armbruster
2020-12-18 21:30                 ` John Snow
2020-12-14 23:53 ` [PATCH 09/12] qapi/gen: move write method to QAPIGenC, make fname a str John Snow
2020-12-16 10:31   ` Markus Armbruster
2020-12-14 23:53 ` [PATCH 10/12] tests/qapi-schema: Add quotes to module name in test output John Snow
2020-12-14 23:53 ` [PATCH 11/12] qapi/schema: Name the builtin module "" instead of None John Snow
2020-12-16 10:42   ` Markus Armbruster
2020-12-16 18:57     ` John Snow
2020-12-17 11:09       ` Markus Armbruster
2020-12-17 21:07         ` John Snow
2020-12-18  5:31           ` Markus Armbruster
2020-12-14 23:53 ` [PATCH 12/12] qapi: enable strict-optional checks John Snow

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