سير العمل البرمجي · أولوية منطقية دون أقواس

def evaluate_flat(tokens):
    if not tokens or len(tokens) % 2 == 0:
        raise ValueError("logic.shape")
    if any(type(x) is not bool for x in tokens[::2]):
        raise ValueError("logic.value")
    if any(x not in ("AND", "OR") for x in tokens[1::2]):
        raise ValueError("logic.operator")
    terms, term = [], tokens[0]
    for i in range(1, len(tokens), 2):
        if tokens[i] == "AND":
            term = term and tokens[i + 1]
        else:
            terms.append(term)
            term = tokens[i + 1]
    return any([*terms, term])