blueprint-compiler/blueprintcompiler/language/attributes.py
2022-02-23 14:40:09 -06:00

45 lines
1.4 KiB
Python

# attributes.py
#
# Copyright 2022 James Westman <james@jwestman.net>
#
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation; either version 3 of the
# License, or (at your option) any later version.
#
# This file is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# SPDX-License-Identifier: LGPL-3.0-or-later
from .values import Value, TranslatedStringValue
from .common import *
class BaseAttribute(AstNode):
"""A helper class for attribute syntax of the form `name: literal_value;`"""
tag_name: str = ""
attr_name: str = "name"
def emit_xml(self, xml: XmlEmitter):
value = self.children[Value][0]
attrs = {self.attr_name: self.tokens["name"]}
if isinstance(value, TranslatedStringValue):
attrs = {**attrs, **value.attrs}
xml.start_tag(self.tag_name, **attrs)
value.emit_xml(xml)
xml.end_tag()
class BaseTypedAttribute(BaseAttribute):
"""A BaseAttribute whose parent has a value_type property that can assist
in validation."""