function BatchTestHelper::stack

Helper function: Stores or retrieves traced execution data.

File

core/modules/system/tests/modules/batch_test/src/BatchTestHelper.php, line 26

Class

BatchTestHelper

Batch helper for testing batches.

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;
}