Beispiel #1
0
		def explode_list(dct, lst, pos):
			t = OptionTree()
			if pos < len(lst):
				for obj in dct[lst[pos]]:
					c = explode_list(dct, lst, pos + 1)
					c.element = obj
					t.append(c)
			return t
Beispiel #2
0
		def parse_from(fsa, tokens, index, state):
			output = OptionTree()
			expected_final = index == len(tokens)
			is_final = state in fsa.get_final()
			if expected_final:
				if is_final:
					return output
				else:
					raise ExpectedStopError(tokens[:index+1], state)
			transitions = fsa.transitions_from(state)
			token = tokens[index]
			matching = [(label, end, tag) for label, end, tag in transitions if self.match(label, token)]
			if len(matching) == 0:
				raise ParseError(tokens[:index+1], state)

			m_pe = None
			for label, end, tag in matching:
				try:
					following = parse_from(fsa, tokens, index + 1, end)
					following.element = (self.process(label, token), tag)
					output.append(following)
				except ParseError, pe:
					if (not m_pe) or len(pe) > len(m_pe):
						m_pe = pe