function BatchTestHelper::stack

Helper function: Stores or retrieves traced execution data.

File

core/modules/system/tests/modules/batch_test/src/BatchTestHelper.php, line 23

Class

BatchTestHelper

Namespace

Code

public function stack($data = NULL, $reset = FALSE) : array|null {
    $state = \Drupal::state();
    if ($reset) {
        $state->delete('batch_test.stack');
    }
    if (!isset($data)) {
        return $state->get('batch_test.stack');
    }
    $stack = $state->get('batch_test.stack');
    $stack[] = $data;
    $state->set('batch_test.stack', $stack);
    return NULL;
}