def try_to_aggregate(sent1, sent2, marker='and'):
""" Attempt to combine two elements into one by replacing the differing
elements by a conjunction.
"""
if sent1 is None or sent2 is None: return None
if not isinstance(sent1, Clause) or not isinstance(sent2, Clause):
return None
replacement = Word("REPLACEMENT", "REPLACEMENT")
for e1 in sentence_iterator(sent1):
s1 = deepcopy(sent1)
s1.replace(e1, replacement) # replace one element
for e2 in sentence_iterator(sent2):
s2 = deepcopy(sent2)
s2.replace(e2, replacement) #replace one element
if s1.subj is None:
if s1.vp == replacement:
continue
if (isinstance(s1.vp, Phrase) and
isinstance(s2.vp, Phrase) and
s1.vp.head != s2.vp.head):
continue
# if sentences are equal (eg s1: load x; s2: load x) aggregate
if (s1 == s2):
get_log().debug('Aggregating:\n\t%s\n\t%s' % (str(s1), str(s2)))
cc = add_elements(e1, e2, conj=marker)
s1.replace(replacement, cc)
get_log().debug('Result of aggregation:\n%s' % repr(s1))
return s1
# else:
# print('Did not aggregate:\n\t%s\n\t%s' % (str(s1), str(s2)))
# if (str(s1) == str(s2)):
# print('s1 == s2: %s' % str(s1 == s2))
return None
def _can_aggregate(message, max):
""" Return true if this message can be aggregated.
max - maximum number of coordinates in a coordingated clause
If the message does not have a coordinated clause or if the number
of coordinates is less then 'max', return True.
"""
if message is None: return False
for part in sentence_iterator(message):
if not isinstance(part, Coordination):
continue
else:
return (len(part.coords) < max)
# simple sentence - no coordinated clause
return True