def parse(msg):
"""
Parses given input.
@param msg: input message to parse
@type msg: str
@return: return message processed with associated commands and filters
@rtype: str
"""
try:
cmd, args = msg.split(" ", 1)
except ValueError:
cmd, args = msg.rstrip(), ""
if cmd in COMMANDS:
ret = COMMANDS[cmd](args)
if state.is_done(ret):
return ret.value
elif state.is_next(ret):
pass
else:
raise Exception("Illegal state of command.")
for filter in FILTERS:
ret = filter(msg)
if state.is_done(ret):
return ret.value
if state.is_replace(ret):
msg = ret.value
return msg
def test_not_state(self): self.assertFalse(state.is_replace(object()))
def test_not_replace(self): self.assertFalse(state.is_replace(state.done(None))) self.assertFalse(state.is_replace(state.next(None)))
def test_replace(self): self.assertTrue(state.is_replace(state.replace(None)))