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bh=TVAIaUd0qn/L1hYp8sivghgZfYY52GolNO0IpyKQ81g=; b=BVOdCwG4qbAoW2J9DX7HQL0Jx1m7htucNaGcUTIyV3WmFnz4YIcIWVs1x5rqt9tVooCtaa v6BpcUJFEBOIkelCFtZ34TjGh+UhFp4Lid2+Db+4IoadZHaeI964EAVGV2nP9LbpaqBrrV 03DaFCkjdyemzBBz5mlD9TKM1QS+Gsg= X-MC-Unique: V-tAuQ5TPR2vp6-fHsAByA-1 From: John Snow To: qemu-devel@nongnu.org, Markus Armbruster Subject: [PATCH v2 03/16] qapi/expr.py: constrain incoming expression types Date: Mon, 26 Oct 2020 17:36:24 -0400 Message-Id: <20201026213637.47087-4-jsnow@redhat.com> In-Reply-To: <20201026213637.47087-1-jsnow@redhat.com> References: <20201026213637.47087-1-jsnow@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jsnow@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable 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; 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charset="utf-8" mypy does not know the types of values stored in Dicts that masquerade as objects. Help the type checker out by constraining the type. Signed-off-by: John Snow Reviewed-by: Eduardo Habkost Reviewed-by: Cleber Rosa --- scripts/qapi/expr.py | 25 ++++++++++++++++++++++--- 1 file changed, 22 insertions(+), 3 deletions(-) diff --git a/scripts/qapi/expr.py b/scripts/qapi/expr.py index 5694c501fa38..f7c7f91326ef 100644 --- a/scripts/qapi/expr.py +++ b/scripts/qapi/expr.py @@ -15,9 +15,17 @@ # See the COPYING file in the top-level directory. =20 import re +from typing import MutableMapping, Optional =20 from .common import c_name from .error import QAPISemError +from .parser import QAPIDoc +from .source import QAPISourceInfo + + +# Expressions in their raw form are JSON-like structures with arbitrary fo= rms. +# Minimally, their top-level form must be a mapping of strings to values. +Expression =3D MutableMapping[str, object] =20 =20 # Names must be letters, numbers, -, and _. They must start with letter, @@ -287,9 +295,20 @@ def check_event(expr, info): =20 def check_exprs(exprs): for expr_elem in exprs: - expr =3D expr_elem['expr'] - info =3D expr_elem['info'] - doc =3D expr_elem.get('doc') + # Expression + assert isinstance(expr_elem['expr'], dict) + expr: Expression =3D expr_elem['expr'] + for key in expr.keys(): + assert isinstance(key, str) + + # QAPISourceInfo + assert isinstance(expr_elem['info'], QAPISourceInfo) + info: QAPISourceInfo =3D expr_elem['info'] + + # Optional[QAPIDoc] + tmp =3D expr_elem.get('doc') + assert tmp is None or isinstance(tmp, QAPIDoc) + doc: Optional[QAPIDoc] =3D tmp =20 if 'include' in expr: continue --=20 2.26.2