def crash_on(condition, function=default_crash_messages, *args):
def print_and_crash():
messages = function(*args)
print('\n'.join(messages))
sys.exit(1)
util.crossroad(lambda: condition, print_and_crash, util.noop)
def result_get_goal_points(result, goal_id):
def is_correct_goal(goal):
return goal.id == goal_id
goal = util.find(is_correct_goal, result.goals)
on_fail = lambda: 0
on_success = lambda: goal.points
return util.crossroad(lambda: goal, on_success, on_fail)
def result_get_or_add_goal(result, rule):
def on_fail():
goal = make_goal_from_rule(rule)
result_add_goal(result, goal)
return goal
def is_correct_goal(goal):
return rule.towards == goal.id
def get_goal():
goal = util.find(is_correct_goal, result_get_goals(result))
return goal
return util.crossroad(get_goal, get_goal, on_fail)
def get_problem_points(problem):
return util.crossroad(lambda: isinstance(problem, str), lambda: 1,
lambda: problem['points'])
def get_problem_id(problem):
return util.crossroad(lambda: isinstance(problem, str),
lambda: problem, lambda: problem['id'])
def process_rule(rule):
needs = context.bool_expression(rule.needs)
success = lambda: on_rule_success(rule)
fail = lambda: on_rule_fail(rule)
util.crossroad(lambda: needs, success, fail)