def apply_condition(self, condition: Condition) -> None:
"""
Apply the condition to this transition
:param condition: Condition should be already formatted! i.e. format should be like A = B + C
:return: None
"""
if condition.get_state() == ConditionState.IS_NOT_ZERO:
logger.warn(
"Can not apply NOT_ZERO condition: {}".format(condition))
return
condition_left = condition.get_left_side()
condition_right = condition.get_right_side()
# XXX: Expect formatted condition
assert len(condition_left) == 1
var = condition_left.get_first()
self.__left.replace_var_by_side(var, condition_right)
self.__right.replace_var_by_side(var, condition_right)
def _use_and_append_zero_cond(self, condition: Condition) -> None:
self.__apply_condition(condition)
self.dump_system("System after apply condition {}".format(condition),
with_main_conds=False)
for nzcondition in self._conds_non_zero:
if nzcondition.update_with(condition):
self.dump_system(
"Conditions after apply condition {}".format(condition),
with_trans=False)
if not nzcondition.is_correct():
func = inspect.currentframe().f_back.f_code
raise ConditionException(
"[{}:{}] Contradiction detected '{}'".format(
func.co_name, func.co_firstlineno, nzcondition))
new_zero_conds = []
useless_econds = []
for econdition in self._conds_equals:
if econdition.update_with(condition):
self.dump_system(
"[_use_and_append_zero_cond] Conditions after apply condition {}"
.format(condition),
with_trans=False)
if not econdition.is_correct():
func = inspect.currentframe().f_back.f_code
raise ConditionException(
"[{}:{}] Contradiction detected '{}'".format(
func.co_name, func.co_firstlineno, econdition))
if econdition.get_state() == ConditionState.IS_ZERO:
# condition was converted
new_zero_conds.append(econdition)
if econdition.is_useless():
useless_econds.append(econdition)
logger.debug("useless: Condition {} true ".format(econdition))
else:
logger.debug("useless: Condition {} false ".format(econdition))
if condition.get_state() == ConditionState.IS_EQUAL:
self._conds_equals.append(condition)
else:
self._conds_zero.append(condition)
self.dump_system("Added condition {}".format(condition),
with_trans=False)
# remove useless condition
if len(useless_econds):
for ucondition in useless_econds:
self._conds_equals.remove(ucondition)
logger.info(
"_use_and_append_zero_cond: remove useless condition from _conds_equals '{}'"
.format(ucondition))
self.dump_system("Clear _conds_equals", with_trans=False)
# remove and apply new zero conditions
if len(new_zero_conds) > 0:
for zcondition in new_zero_conds:
self._conds_equals.remove(zcondition)
logger.info(
"_use_and_append_zero_cond: remove new zero condition from _conds_equals '{}'"
.format(zcondition))
self.dump_system("Clear _conds_equals 2", with_trans=False)
for zcondition in new_zero_conds:
self._use_and_append_zero_cond(zcondition)
