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   1  <?php
   2  
   3  /*
   4   * This file is part of the Symfony package.
   5   *
   6   * (c) Fabien Potencier <fabien@symfony.com>
   7   *
   8   * For the full copyright and license information, please view the LICENSE
   9   * file that was distributed with this source code.
  10   */
  11  
  12  namespace Symfony\Component\HttpKernel\Controller\ArgumentResolver;
  13  
  14  use Symfony\Component\HttpFoundation\Request;
  15  use Symfony\Component\HttpFoundation\Session\SessionInterface;
  16  use Symfony\Component\HttpKernel\Controller\ArgumentValueResolverInterface;
  17  use Symfony\Component\HttpKernel\ControllerMetadata\ArgumentMetadata;
  18  
  19  /**
  20   * Yields the Session.
  21   *
  22   * @author Iltar van der Berg <kjarli@gmail.com>
  23   */
  24  final class SessionValueResolver implements ArgumentValueResolverInterface
  25  {
  26      /**
  27       * {@inheritdoc}
  28       */
  29      public function supports(Request $request, ArgumentMetadata $argument)
  30      {
  31          $type = $argument->getType();
  32          if (SessionInterface::class !== $type && !is_subclass_of($type, SessionInterface::class)) {
  33              return false;
  34          }
  35  
  36          return $request->getSession() instanceof $type;
  37      }
  38  
  39      /**
  40       * {@inheritdoc}
  41       */
  42      public function resolve(Request $request, ArgumentMetadata $argument)
  43      {
  44          yield $request->getSession();
  45      }
  46  }