class RuleBasedSystem:
    rules = []

    def __init__(self, rules: list):
        self.rules = rules

    def allows(self, comment_text: str) -> (bool, list):
        allows, reasons, highlights = True, [], []

        for rule in self.rules:
            verdict = rule.get_verdict(comment_text)
            if not verdict.allowed:
                allows = False
                reasons.append(rule.get_rule_description())
                highlights += verdict.highlights

        return allows, reasons, highlights