def create_zero_condition(side: Side) -> 'Condition':
assert isinstance(side, Side) and not side.is_empty()
s = str(side)
var = side.pop_the_latest_variable()
s_var = str(var)
assert var is not None
try:
side.move_lo_from_var(var)
except SideException as se:
raise ConditionException("Can not create zero condition {}".format(s))
c = Condition(Side(var), side, ConditionState.IS_ZERO if side.is_empty() else ConditionState.IS_EQUAL)
logger.info("create_zero_condition: var: {}; side: {}. => '{}'".format(s_var, s, c))
return c
def __init__(self, left_side: Side, right_side: Side, state: ConditionState) -> None:
"""
left_side - is list of Variables
left_side - is list of Variables or None if state equal IS_ZERO
state - state of condition
"""
if not right_side.is_empty() and state == ConditionState.IS_ZERO:
assert "Internal error" == 0
self.__state = state # type: ConditionState
self.__left_side = left_side # type: Side
self.__right_side = right_side # type: Side
def create_non_zero_condition(side: Side) -> 'Condition':
assert isinstance(side, Side) and not side.is_empty()
return Condition(side, Side(), ConditionState.IS_NOT_ZERO)