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bh=c4feM44XQc0TAE09TT5lNOmorTyE+zBWAge5h2hgu+Q=; b=PNzwIPDa7yhvgn/2ke0ACxkCfmc21SMJJhVBUYhQFyVhnubFdR7N9w/+CNeooJLW7gi8Db tLZRhkVK/9sRvy+PoB7JkLdxmmipDshpbNjCj6hxv+EoNL9dvfBM9eteW38nS8nc07GDTe 4nlxBkESuBGdJnwSzn/5/rgD1KxveZw= X-MC-Unique: 6k3vV8uUNR2QaF5mM8sQTA-1 From: John Snow To: qemu-devel@nongnu.org Subject: [PATCH v3 42/47] qapi/introspect.py: create a typed 'Node' data structure Date: Thu, 24 Sep 2020 20:28:55 -0400 Message-Id: <20200925002900.465855-43-jsnow@redhat.com> In-Reply-To: <20200925002900.465855-1-jsnow@redhat.com> References: <20200925002900.465855-1-jsnow@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 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" This replaces _make_tree with Node.__init__(), effectively. By creating it as a generic container, we can more accurately describe the exact nature of this particular Node. Signed-off-by: John Snow --- scripts/qapi/introspect.py | 77 +++++++++++++++++++------------------- 1 file changed, 38 insertions(+), 39 deletions(-) diff --git a/scripts/qapi/introspect.py b/scripts/qapi/introspect.py index c444214090..3832edaf9d 100644 --- a/scripts/qapi/introspect.py +++ b/scripts/qapi/introspect.py @@ -12,11 +12,12 @@ =20 from typing import ( Dict, + Generic, + Iterable, List, Optional, Sequence, - Tuple, - Union, + TypeVar, ) =20 from .common import ( @@ -42,42 +43,42 @@ from .source import QAPISourceInfo =20 # The correct type for TreeNode is actually: -# Union[AnnotatedNode, List[TreeNode], Dict[str, TreeNode], str, bool] +# Union[Node[TreeNode], List[TreeNode], Dict[str, TreeNode], str, bool] # but mypy does not support recursive types yet. TreeNode =3D object +_NodeType =3D TypeVar('_NodeType', bound=3DTreeNode) _DObject =3D Dict[str, object] -Extra =3D Dict[str, object] -AnnotatedNode =3D Tuple[TreeNode, Extra] =20 =20 -def _make_tree(obj: Union[_DObject, str], ifcond: List[str], - comment: Optional[str] =3D None) -> AnnotatedNode: - extra: Extra =3D { - 'if': ifcond, - 'comment': comment, - } - return (obj, extra) +class Node(Generic[_NodeType]): + """ + Node generally contains a SchemaInfo-like type (as a dict), + But it also used to wrap comments/ifconds around leaf value types. + """ + # Remove after 3.7 adds @dataclass: + # pylint: disable=3Dtoo-few-public-methods + def __init__(self, data: _NodeType, ifcond: Iterable[str], + comment: Optional[str] =3D None): + self.data =3D data + self.comment: Optional[str] =3D comment + self.ifcond: Sequence[str] =3D tuple(ifcond) =20 =20 -def _tree_to_qlit(obj: TreeNode, - level: int =3D 0, +def _tree_to_qlit(obj: TreeNode, level: int =3D 0, suppress_first_indent: bool =3D False) -> str: =20 def indent(level: int) -> str: return level * 4 * ' ' =20 - if isinstance(obj, tuple): - ifobj, extra =3D obj - ifcond =3D extra.get('if') - comment =3D extra.get('comment') + if isinstance(obj, Node): ret =3D '' - if comment: - ret +=3D indent(level) + '/* %s */\n' % comment - if ifcond: - ret +=3D gen_if(ifcond) - ret +=3D _tree_to_qlit(ifobj, level) - if ifcond: - ret +=3D '\n' + gen_endif(ifcond) + if obj.comment: + ret +=3D indent(level) + '/* %s */\n' % obj.comment + if obj.ifcond: + ret +=3D gen_if(obj.ifcond) + ret +=3D _tree_to_qlit(obj.data, level) + if obj.ifcond: + ret +=3D '\n' + gen_endif(obj.ifcond) return ret =20 ret =3D '' @@ -124,7 +125,7 @@ def __init__(self, prefix: str, unmask: bool): ' * QAPI/QMP schema introspection', __doc__) self._unmask =3D unmask self._schema: Optional[QAPISchema] =3D None - self._trees: List[AnnotatedNode] =3D [] + self._trees: List[Node[_DObject]] =3D [] self._used_types: List[QAPISchemaType] =3D [] self._name_map: Dict[str, str] =3D {} self._genc.add(mcgen(''' @@ -191,9 +192,8 @@ def _use_type(self, typ: QAPISchemaType) -> str: =20 @classmethod def _gen_features(cls, - features: List[QAPISchemaFeature] - ) -> List[AnnotatedNode]: - return [_make_tree(f.name, f.ifcond) for f in features] + features: List[QAPISchemaFeature]) -> List[Node[str]= ]: + return [Node(f.name, f.ifcond) for f in features] =20 def _gen_tree(self, name: str, mtype: str, obj: _DObject, ifcond: List[str], @@ -209,10 +209,10 @@ def _gen_tree(self, name: str, mtype: str, obj: _DObj= ect, obj['meta-type'] =3D mtype if features: obj['features'] =3D self._gen_features(features) - self._trees.append(_make_tree(obj, ifcond, comment)) + self._trees.append(Node(obj, ifcond, comment)) =20 def _gen_member(self, - member: QAPISchemaObjectTypeMember) -> AnnotatedNode: + member: QAPISchemaObjectTypeMember) -> Node[_DObject]: obj: _DObject =3D { 'name': member.name, 'type': self._use_type(member.type) @@ -221,19 +221,19 @@ def _gen_member(self, obj['default'] =3D None if member.features: obj['features'] =3D self._gen_features(member.features) - return _make_tree(obj, member.ifcond) + return Node(obj, member.ifcond) =20 def _gen_variants(self, tag_name: str, variants: List[QAPISchemaVariant]) -> _DObject: return {'tag': tag_name, 'variants': [self._gen_variant(v) for v in variants]} =20 - def _gen_variant(self, variant: QAPISchemaVariant) -> AnnotatedNode: + def _gen_variant(self, variant: QAPISchemaVariant) -> Node[_DObject]: obj: _DObject =3D { 'case': variant.name, 'type': self._use_type(variant.type) } - return _make_tree(obj, variant.ifcond) + return Node(obj, variant.ifcond) =20 def visit_builtin_type(self, name: str, info: Optional[QAPISourceInfo], json_type: str) -> None: @@ -244,8 +244,7 @@ def visit_enum_type(self, name: str, info: QAPISourceIn= fo, members: List[QAPISchemaEnumMember], prefix: Optional[str]) -> None: self._gen_tree(name, 'enum', - {'values': [_make_tree(m.name, m.ifcond, None) - for m in members]}, + {'values': [Node(m.name, m.ifcond) for m in members= ]}, ifcond, features) =20 def visit_array_type(self, name: str, info: Optional[QAPISourceInfo], @@ -273,9 +272,9 @@ def visit_alternate_type(self, name: str, info: QAPISou= rceInfo, variants: QAPISchemaVariants) -> None: self._gen_tree(name, 'alternate', {'members': [ - _make_tree({'type': self._use_type(m.type)}, - m.ifcond, None) - for m in variants.variants]}, + Node({'type': self._use_type(m.type)}, m.ifcond) + for m in variants.variants + ]}, ifcond, features) =20 def visit_command(self, name: str, info: QAPISourceInfo, ifcond: List[= str], --=20 2.26.2