def from_string(cls, s):
"""
Initialize a new DAG from a Pennman style string.
"""
if not cls._parser_singleton: # Initialize the AMR parser only once
_parser_singleton = make_amr_parser()
try:
ast = _parser_singleton.parseString(s)
except pyparsing.ParseException, e:
sys.stderr.write("Could not parse DAG: %s" % s)
raise e
def from_string(cls, amr_string):
"""
Initialize a new abstract meaning representation from a Pennman style string.
"""
if not cls._parser_singleton: # Initialize the AMR parser only once
_parser_singleton = make_amr_parser()
try:
ast = _parser_singleton.parseString(amr_string)
except pyparsing.ParseException, e:
sys.stderr.write("Could not parse AMR: %s" % amr_string)
raise e