class ManifestError(Exception):
    def __init__(self, message, manifest_path=None, data_path=None):
        super(ManifestError, self).__init__(message)
        self.message = message
        self.manifest_path = manifest_path
        self.data_path = data_path
        self.args = (self.message, self.manifest_path, self.data_path)

    def __str__(self):
        if self.data_path is not None:
            path = '.'.join(map(str, self.data_path))
            return ('{msg}\n  File path: {file}\n  Data path: {datapath}'
                    .format(msg=self.message, file=self.manifest_path, datapath=path))
        return '{file}: {msg}'.format(msg=self.message, file=self.manifest_path)


class TaskListError(Exception):
    def __init__(self, message):
        super(TaskListError, self).__init__(message)
        self.message = message
        self.args = (self.message,)

    def __str__(self):
        return 'Error in tasklist: ' + self.message


class TaskError(Exception):
    pass


class UnexpectedNumMatchesError(Exception):
    pass


class UnitError(Exception):
    pass