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Re: [PATCH v2 24/38] qapi/gen.py: Fix edge-case of _is_user_module


From: John Snow
Subject: Re: [PATCH v2 24/38] qapi/gen.py: Fix edge-case of _is_user_module
Date: Wed, 23 Sep 2020 19:57:09 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0

On 9/23/20 7:08 PM, Cleber Rosa wrote:
On Tue, Sep 22, 2020 at 05:00:47PM -0400, John Snow wrote:
The edge case is that if the name is '', this expression returns a
string instead of a bool, which violates our declared type.

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

diff --git a/scripts/qapi/gen.py b/scripts/qapi/gen.py
index 9898d513ae..cb2b2655c3 100644
--- a/scripts/qapi/gen.py
+++ b/scripts/qapi/gen.py
@@ -251,7 +251,7 @@ def __init__(self, prefix, what, user_blurb, builtin_blurb, 
pydoc):
@staticmethod
      def _is_user_module(name):
-        return name and not name.startswith('./')
+        return name is not None and not name.startswith('./')

Another possibility here that handles the empty string situation and
will never return anything but a bool:

   return all([name, not name.startswith('./')])

Either way,

Reviewed-by: Cleber Rosa <crosa@redhat.com>


I wound up changing this per ehabkost's review.

--js




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