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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def ParseInteger(text, is_signed=False, is_long=False):
 """Parses an integer. Args: text: The text to parse. is_signed: True if a signed integer must be parsed. is_long: True if a long integer must be parsed. Returns: The integer value. Raises: ValueError: Thrown Iff the text is not a valid integer. """

  # Do the actual parsing. Exception handling is propagated to caller.
  result = _ParseAbstractInteger(text, is_long=is_long)

  # Check if the integer is sane. Exceptions handled by callers.
  checker = _INTEGER_CHECKERS[2 * int(is_long) + int(is_signed)]
  checker.CheckValue(result)
  return result