سير العمل البرمجي · عمق تداخل الأقواس

def bracket_depth(text):
    if type(text) is not str:
        raise ValueError("bracket.type")
    stack, peak = [], 0
    pairs = {')': '(', ']': '[', '}': '{'}
    for char in text:
        if char in "([{":
            stack.append(char)
            peak = max(peak, len(stack))
        elif char in pairs:
            if not stack or stack.pop() != pairs[char]:
                raise ValueError("bracket.order")
        else:
            raise ValueError("bracket.alphabet")
    if stack:
        raise ValueError("bracket.unclosed")
    return peak