code: def line_iterator_to_intermediary(line_iterator):
      
      current_table = None
      tables = []
      relations = []
      errors = []
      for line_nb, line, raw_line in filter_lines_from_comments(line_iterator):
          try:
              new_obj = parse_line(line)
              current_table, tables, relations = update_models(new_obj, current_table, tables, relations)
          except ParsingException as e:
              e.line_nb = line_nb
              e.line = raw_line
              errors.append(e)
      if len(errors) != 0:
          msg = 'ERAlchemy couldn\'t complete the generation due the {} following errors'.format(len(errors))
          raise ParsingException(msg + '\n\n'.join(e.traceback for e in errors))
      return tables, relations
docs: Parse an iterator of str (one string per line) to the intermediary syntax