UpdateRegistry::getAvailableUpdateFunctions

protected UpdateRegistry::getAvailableUpdateFunctions()

protected function getAvailableUpdateFunctions() {
  $regexp = '/^(?<module>.+)_' . $this->updateType . '_(?<name>.+)$/';
  $functions = get_defined_functions();

  $updates = [];
  foreach (preg_grep('/_' . $this->updateType . '_/', $functions['user']) as $function) {
    // If this function is a module update function, add it to the list of
    // module updates.
    if (preg_match($regexp, $function, $matches)) {
      if (in_array($matches['module'], $this->enabledModules)) {
        $updates[] = $matches['module'] . '_' . $this->updateType . '_' . $matches['name'];
      }
    }
  }

  // Ensure that the update order is deterministic.
  sort($updates);
  return $updates;
}