""" Package exception types """

__all__ = ["FileFormatError", "AliasError", "UndefinedAliasError"]


class FileFormatError(Exception):
    """ Exception for invalid file format. """

    pass


class AliasError(Exception):
    """ Alias related error. """

    pass


class UndefinedAliasError(AliasError):
    """ Alias is is not defined. """

    pass
