private void processAction(Action<?> action, UpdatingIterator parentIterator) {
if (action.act == Action.Act.next || action.act == Action.Act.nextSibling) {
// do nothing
} else if (action.act == Action.Act.remove) {
parentIterator.remove();
} else if (action.act == Action.Act.replace) {
AmObject replacement = action.getReplaceWith();
parentIterator.set(replacement);
} else throw new AssertionError(action);
}
@Nullable
private AmObject extractWalkObject(AmObject amObject, Action<?> result) {
if (result.act == Action.Act.next) {
return amObject;
} else if (result.act == Action.Act.nextSibling) {
return null;
} else if (result.act == Action.Act.remove) {
return null;
} else if (result.act == Action.Act.replace) {
return result.getReplaceWith();
} else throw new AssertionError(result);
}