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# Copyright (c) 2018 Shaun McCance <shaunm@gnome.org>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
import mallard.ducktype
IFURI = 'http://projectmallard.org/if/1.0/'
class IfExtension(mallard.ducktype.parser.ParserExtension):
def __init__(self, parser, prefix, version):
if version == 'experimental':
self.version = version
else:
raise mallard.ducktype.parser.SyntaxError(
'Unsupported if extension version: ' + version,
parser)
self.parser = parser
self.prefix = prefix
self.version = version
self.parser.document.add_namespace('if', IFURI)
def parse_line_block(self, line):
indent = mallard.ducktype.parser.DuckParser.get_indent(line)
iline = line[indent:]
if iline.strip() == '??':
self.parser.push_text()
self.parser.unravel_for_block(indent)
if self.parser.current.is_name('choose', IFURI):
elname = 'if:else'
else:
elname = 'if:choose'
qnode = mallard.ducktype.parser.Block(elname, indent, parser=self.parser)
self.parser.current.add_child(qnode)
self.parser.current = qnode
self.parser.state = mallard.ducktype.parser.DuckParser.STATE_BLOCK_READY
return True
if iline.startswith('? '):
self.parser.push_text()
self.parser.unravel_for_block(indent)
if self.parser.current.is_name('choose', IFURI):
elname = 'if:when'
else:
elname = 'if:if'
qnode = mallard.ducktype.parser.Block(elname, indent, parser=self.parser)
qnode.attributes = mallard.ducktype.parser.Attributes()
qnode.attributes.add_attribute('test', iline[2:].strip())
self.parser.current.add_child(qnode)
self.parser.current = qnode
self.parser.state = mallard.ducktype.parser.DuckParser.STATE_BLOCK_READY
return True
return False
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