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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 Psr\Container\ContainerInterface;
  15  use Symfony\Component\HttpFoundation\Request;
  16  use Symfony\Component\HttpKernel\Controller\ArgumentValueResolverInterface;
  17  use Symfony\Component\HttpKernel\ControllerMetadata\ArgumentMetadata;
  18  
  19  /**
  20   * Yields a service keyed by _controller and argument name.
  21   *
  22   * @author Nicolas Grekas <p@tchwork.com>
  23   */
  24  final class ServiceValueResolver implements ArgumentValueResolverInterface
  25  {
  26      private $container;
  27  
  28      public function __construct(ContainerInterface $container)
  29      {
  30          $this->container = $container;
  31      }
  32  
  33      /**
  34       * {@inheritdoc}
  35       */
  36      public function supports(Request $request, ArgumentMetadata $argument)
  37      {
  38          $controller = $request->attributes->get('_controller');
  39  
  40          if (\is_array($controller) && \is_callable($controller, true) && \is_string($controller[0])) {
  41              $controller = $controller[0].'::'.$controller[1];
  42          } elseif (!\is_string($controller) || '' === $controller) {
  43              return false;
  44          }
  45  
  46          if ('\\' === $controller[0]) {
  47              $controller = ltrim($controller, '\\');
  48          }
  49  
  50          if (!$this->container->has($controller) && false !== $i = strrpos($controller, ':')) {
  51              $controller = substr($controller, 0, $i).strtolower(substr($controller, $i));
  52          }
  53  
  54          return $this->container->has($controller) && $this->container->get($controller)->has($argument->getName());
  55      }
  56  
  57      /**
  58       * {@inheritdoc}
  59       */
  60      public function resolve(Request $request, ArgumentMetadata $argument)
  61      {
  62          if (\is_array($controller = $request->attributes->get('_controller'))) {
  63              $controller = $controller[0].'::'.$controller[1];
  64          }
  65  
  66          if ('\\' === $controller[0]) {
  67              $controller = ltrim($controller, '\\');
  68          }
  69  
  70          if (!$this->container->has($controller)) {
  71              $i = strrpos($controller, ':');
  72              $controller = substr($controller, 0, $i).strtolower(substr($controller, $i));
  73          }
  74  
  75          yield $this->container->get($controller)->get($argument->getName());
  76      }
  77  }