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bh=2I5t1vA5twX5O+nB7fme1OJngjl4AglH3dg6yYkL/Yk=; b=SwhnGDRqT6ge3Ar1LwGZsScUts8LsDfA9SUyCm9ySs4Et9ZaZ/NYgH8Ics+94Aj8fI+Xc5 Z3GXqFxcbBsYeg7kMME+KkN26R1UmdacWBNETXKmtcaEpvIztH+/HoFC8LSV1c7tXcYXae V5tGKGPnjnAgzMXm79eNf3IRU8yjqc8= X-MC-Unique: SJ4GzRf-OHqWOasp9VzgvA-1 From: John Snow To: qemu-devel@nongnu.org Cc: Peter Maydell , Michael Roth , Markus Armbruster , John Snow Subject: [PATCH v4 11/23] qapi/schema: assert resolve_type has 'info' and 'what' args on error Date: Wed, 13 Mar 2024 00:41:15 -0400 Message-ID: <20240313044127.49089-12-jsnow@redhat.com> In-Reply-To: <20240313044127.49089-1-jsnow@redhat.com> References: <20240313044127.49089-1-jsnow@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.5 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=jsnow@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.687, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1710305125951100001 Content-Type: text/plain; charset="utf-8" resolve_type() is generally used to resolve configuration-provided type names into type objects, and generally requires valid 'info' and 'what' parameters. In some cases, such as with QAPISchemaArrayType.check(), resolve_type may be used to resolve built-in types and as such will not have an 'info' argument, but also must not fail in this scenario. Use an assertion to sate mypy that we will indeed have 'info' and 'what' parameters for the error pathway in resolve_type. Note: there are only three callsites to resolve_type at present where "info" is perceived by mypy to be possibly None: 1) QAPISchemaArrayType.check() 2) QAPISchemaObjectTypeMember.check() 3) QAPISchemaEvent.check() Of those three, only the first actually ever passes None; the other two are limited by their base class initializers which accept info=3DNone, = but neither subclass actually use a None value in practice, currently. Signed-off-by: John Snow --- scripts/qapi/schema.py | 1 + 1 file changed, 1 insertion(+) diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py index b157a3b2bd8..f5c7789d98f 100644 --- a/scripts/qapi/schema.py +++ b/scripts/qapi/schema.py @@ -996,6 +996,7 @@ def lookup_type(self, name): def resolve_type(self, name, info, what): typ =3D self.lookup_type(name) if not typ: + assert info and what # built-in types must not fail lookup if callable(what): what =3D what(info) raise QAPISemError( --=20 2.44.0