@dataclass
class StringIO:
    _buf     : str
    _0cursor : i32 = i32(0)
    _len     : i32 = i32(0)

if __name__ == '__main__':
    integer_asr : str = '(Integer 4 [])'
    test_dude   : StringIO = StringIO(integer_asr, 0, 15)
    assert test_dude._buf == integer_asr
    assert test_dude._len == 15

@dataclass
class StringIO:
    _buf     : str
    _0cursor : int = 0
    _len     : int = 0

if __name__ == '__main__':
    integer_asr : str = '(Integer 4 [])'
    test_dude   : StringIO = StringIO(integer_asr, 0, 15)
    assert test_dude._buf == integer_asr
    assert test_dude._len == 15