def _reify_xmrs(path, top_axis=None):
nodes = {}
links = []
agenda = [(0, top_axis or ':/H>', path)]
while agenda:
srcnid, axis, tgt = agenda.pop()
if tgt is None:
continue
# add link to tgt
rargname, post = axis.strip(':<>').split('/')
if axis.startswith('<'):
links.append(Link(tgt.nodeid, srcnid, rargname or None, post))
elif axis.endswith('>'):
links.append(Link(srcnid, tgt.nodeid, rargname or None, post))
elif axis == ':/EQ:':
links.append(Link(srcnid, tgt.nodeid, None, 'EQ'))
else:
raise XmrsPathError('Invalid axis: {}'.format(axis))
# add node if necessary (note, currently does not update pred
# or sortinfo if encountered twice)
if tgt.nodeid not in nodes:
sortinfo = dict([('cvarsort', tgt.context.get('varsort') or 'u')] +
[(k.lstrip('@'), v)
for k, v in tgt.context.items()
if k.startswith('@')])
nodes[tgt.nodeid] = Node(tgt.nodeid, tgt.pred, sortinfo=sortinfo)
# add new agenda for tgt
for axis, next_tgt in tgt.links.items():
agenda.append((tgt.nodeid, axis, next_tgt))
return Dmrs(list(nodes.values()), links)
def _decode_link(elem):
# <!ELEMENT link (rargname, post)>
# <!ATTLIST link
# from CDATA #REQUIRED
# to CDATA #REQUIRED >
# <!ELEMENT rargname (#PCDATA)>
# <!ELEMENT post (#PCDATA)>
return Link(start=elem.get('from'),
end=elem.get('to'),
rargname=getattr(elem.find('rargname'), 'text', None),
post=getattr(elem.find('post'), 'text', None))
def decode_link(elem):
return Link(start=elem.get('from'),
end=elem.get('to'),
rargname=elem.find('rargname').text,
post=elem.find('post').text)