Method _attack

textattack/attack.py:387–417

Calls the ``SearchMethod`` to perturb the ``AttackedText`` stored in ``initial_result``. Args: initial_result: The initial ``GoalFunctionResult`` from which to perturb. Returns: A ``SuccessfulAttackResult``, ``FailedAttackResult``, or

(self, initial_result)

        return filtered_texts

    def _attack(self, initial_result):
        """Calls the ``SearchMethod`` to perturb the ``AttackedText`` stored in
        ``initial_result``.

        Args:
            initial_result: The initial ``GoalFunctionResult`` from which to perturb.

        Returns:
            A ``SuccessfulAttackResult``, ``FailedAttackResult``,
                or ``MaximizedAttackResult``.
        """
        final_result = self.search_method(initial_result)
        self.clear_cache()
        if final_result.goal_status == GoalFunctionResultStatus.SUCCEEDED:
            result = SuccessfulAttackResult(
                initial_result,
                final_result,
            )
        elif final_result.goal_status == GoalFunctionResultStatus.SEARCHING:
            result = FailedAttackResult(
                initial_result,
                final_result,
            )
        elif final_result.goal_status == GoalFunctionResultStatus.MAXIMIZING:
            result = MaximizedAttackResult(
                initial_result,
                final_result,
            )
        else:
            raise ValueError(f"Unrecognized goal status {final_result.goal_status}")
        return result

    def attack(self, example, ground_truth_output):
        """Attack a single example.