* * @internal */ final class SessionBagProxy implements SessionBagInterface { private $bag; private $data; private $usageIndex; public function __construct(SessionBagInterface $bag, array &$data, &$usageIndex) { $this->bag = $bag; $this->data = &$data; $this->usageIndex = &$usageIndex; } /** * @return SessionBagInterface */ public function getBag() { ++$this->usageIndex; return $this->bag; } /** * @return bool */ public function isEmpty() { if (!isset($this->data[$this->bag->getStorageKey()])) { return true; } ++$this->usageIndex; return empty($this->data[$this->bag->getStorageKey()]); } /** * {@inheritdoc} */ public function getName() { return $this->bag->getName(); } /** * {@inheritdoc} */ public function initialize(array &$array) { ++$this->usageIndex; $this->data[$this->bag->getStorageKey()] = &$array; $this->bag->initialize($array); } /** * {@inheritdoc} */ public function getStorageKey() { return $this->bag->getStorageKey(); } /** * {@inheritdoc} */ public function clear() { return $this->bag->clear(); } }