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bh=d+gK0iWz83spFrtFnLD87oxCq0K8Ibm8tVN5l43FphQ=; b=HhuUGYcuQ6AmIWF8zKhZmxCBdFfGIwdgbjVYQ2hDJwTo9j6DzzMKy7OikFJabPtuWblh90 isKsQgowu3Qkh1ff5axI3a4cxE4xAnHXcQrzF66N8vNr7pPGI3XmQHoLBFuj9/4VhPnhTD ehzm7G6Ku4tpkviSkoC+Pel9Vcq7kw0= X-MC-Unique: OY74SVZSOKyhISv5G6ECHg-1 From: John Snow To: qemu-devel@nongnu.org Subject: [PATCH 2/3] qapi/parser.py: add ParsedExpression type Date: Thu, 20 May 2021 11:17:58 -0400 Message-Id: <20210520151759.91929-3-jsnow@redhat.com> In-Reply-To: <20210520151759.91929-1-jsnow@redhat.com> References: <20210520151759.91929-1-jsnow@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 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; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=jsnow@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -31 X-Spam_score: -3.2 X-Spam_bar: --- X-Spam_report: (-3.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.39, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Michael Roth , John Snow , Markus Armbruster Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" This is an immutable, named, typed tuple. It's nicer than arbitrary dicts for passing data around when using strict typing. We may upgrade this to a @dataclass style class in the future if we want to support mutability at a later time. (And after 3.7+ is available for use.) Turn parser.exprs into a list of ParsedExpressions instead, and adjust expr.py to match. This allows the types we specify in parser.py to be remembered all the way through expr.py and into schema.py. Several assertions around packing and unpacking this data can be removed as a result. Signed-off-by: John Snow --- scripts/qapi/expr.py | 29 +++++++++-------------------- scripts/qapi/parser.py | 29 ++++++++++++++++++----------- scripts/qapi/schema.py | 6 +++--- 3 files changed, 30 insertions(+), 34 deletions(-) diff --git a/scripts/qapi/expr.py b/scripts/qapi/expr.py index 9dff0cd9080..6d89343897c 100644 --- a/scripts/qapi/expr.py +++ b/scripts/qapi/expr.py @@ -44,7 +44,7 @@ =20 from .common import c_name from .error import QAPISemError -from .parser import QAPIDoc +from .parser import ParsedExpression from .source import QAPISourceInfo =20 =20 @@ -586,29 +586,17 @@ def check_event(expr: _JSONObject, info: QAPISourceIn= fo) -> None: check_type(args, info, "'data'", allow_dict=3Dnot boxed) =20 =20 -def check_expr(expr_elem: _JSONObject) -> None: +def check_expr(pexpr: ParsedExpression) -> None: """ - Validate and normalize a parsed QAPI schema expression. + Validate and normalize a `ParsedExpression`. =20 - :param expr_elem: The parsed expression to normalize and validate. + :param pexpr: The parsed expression to normalize and validate. =20 :raise QAPISemError: When this expression fails validation. - :return: None, ``expr`` is normalized in-place as needed. + :return: None, ``pexpr`` is normalized in-place as needed. """ - # Expression - assert isinstance(expr_elem['expr'], dict) - for key in expr_elem['expr'].keys(): - assert isinstance(key, str) - expr: _JSONObject =3D expr_elem['expr'] - - # 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 + expr =3D pexpr.expr + info =3D pexpr.info =20 if 'include' in expr: return @@ -633,6 +621,7 @@ def check_expr(expr_elem: _JSONObject) -> None: info.set_defn(meta, name) check_defn_name_str(name, info, meta) =20 + doc =3D pexpr.doc if doc: if doc.symbol !=3D name: raise QAPISemError( @@ -684,7 +673,7 @@ def check_expr(expr_elem: _JSONObject) -> None: check_flags(expr, info) =20 =20 -def check_exprs(exprs: List[_JSONObject]) -> List[_JSONObject]: +def check_exprs(exprs: List[ParsedExpression]) -> List[ParsedExpression]: """ Validate and normalize a list of parsed QAPI schema expressions. =20 diff --git a/scripts/qapi/parser.py b/scripts/qapi/parser.py index 36d4bd175a0..5ea9b643837 100644 --- a/scripts/qapi/parser.py +++ b/scripts/qapi/parser.py @@ -21,6 +21,7 @@ TYPE_CHECKING, Dict, List, + NamedTuple, Optional, Set, Union, @@ -43,6 +44,12 @@ _ExprValue =3D Union[List[object], Dict[str, object], str, bool] =20 =20 +class ParsedExpression(NamedTuple): + expr: TopLevelExpr + info: QAPISourceInfo + doc: Optional['QAPIDoc'] + + class QAPIParseError(QAPISourceError): """Error class for all QAPI schema parsing errors.""" def __init__(self, parser: 'QAPISchemaParser', msg: str): @@ -95,7 +102,7 @@ def __init__(self, self.line_pos =3D 0 =20 # Parser output: - self.exprs: List[Dict[str, object]] =3D [] + self.exprs: List[ParsedExpression] =3D [] self.docs: List[QAPIDoc] =3D [] =20 # Showtime! @@ -142,8 +149,7 @@ def _parse(self) -> None: "value of 'include' must be a strin= g") incl_fname =3D os.path.join(os.path.dirname(self._fname), include) - self.exprs.append({'expr': {'include': incl_fname}, - 'info': info}) + self._add_expr(OrderedDict({'include': incl_fname}), info) exprs_include =3D self._include(include, info, incl_fname, self._included) if exprs_include: @@ -160,17 +166,18 @@ def _parse(self) -> None: for name, value in pragma.items(): self._pragma(name, value, info) else: - expr_elem =3D {'expr': expr, - 'info': info} - if cur_doc: - if not cur_doc.symbol: - raise QAPISemError( - cur_doc.info, "definition documentation requir= ed") - expr_elem['doc'] =3D cur_doc - self.exprs.append(expr_elem) + if cur_doc and not cur_doc.symbol: + raise QAPISemError( + cur_doc.info, "definition documentation required") + self._add_expr(expr, info, cur_doc) cur_doc =3D None self.reject_expr_doc(cur_doc) =20 + def _add_expr(self, expr: TopLevelExpr, + info: QAPISourceInfo, + doc: Optional['QAPIDoc'] =3D None) -> None: + self.exprs.append(ParsedExpression(expr, info, doc)) + @staticmethod def reject_expr_doc(doc: Optional['QAPIDoc']) -> None: if doc and doc.symbol: diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py index d1d27ff7ee8..025b22cd3df 100644 --- a/scripts/qapi/schema.py +++ b/scripts/qapi/schema.py @@ -1148,9 +1148,9 @@ def _def_event(self, expr, info, doc): =20 def _def_exprs(self, exprs): for expr_elem in exprs: - expr =3D expr_elem['expr'] - info =3D expr_elem['info'] - doc =3D expr_elem.get('doc') + expr =3D expr_elem.expr + info =3D expr_elem.info + doc =3D expr_elem.doc if 'enum' in expr: self._def_enum_type(expr, info, doc) elif 'struct' in expr: --=20 2.30.2