void PSpace()
{
run_to_data_content = true;
string num_word = get_number_word();
int num = parse_number_32(num_word);
if (num > MAX_SPACE_NUM)
error(".space 要求空间太大了!");
#if debug
Debug("got space: " + num.ToString());
#endif
format_line.Append(num_word);
}