--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpKernel\Controller\ArgumentResolver;
+
+use Psr\Container\ContainerInterface;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpKernel\Controller\ArgumentValueResolverInterface;
+use Symfony\Component\HttpKernel\ControllerMetadata\ArgumentMetadata;
+
+/**
+ * Yields a service keyed by _controller and argument name.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+final class ServiceValueResolver implements ArgumentValueResolverInterface
+{
+ private $container;
+
+ public function __construct(ContainerInterface $container)
+ {
+ $this->container = $container;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function supports(Request $request, ArgumentMetadata $argument)
+ {
+ $controller = $request->attributes->get('_controller');
+
+ if (\is_array($controller) && \is_callable($controller, true) && \is_string($controller[0])) {
+ $controller = $controller[0].'::'.$controller[1];
+ } elseif (!\is_string($controller) || '' === $controller) {
+ return false;
+ }
+
+ if ('\\' === $controller[0]) {
+ $controller = ltrim($controller, '\\');
+ }
+
+ return $this->container->has($controller) && $this->container->get($controller)->has($argument->getName());
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function resolve(Request $request, ArgumentMetadata $argument)
+ {
+ if (\is_array($controller = $request->attributes->get('_controller'))) {
+ $controller = $controller[0].'::'.$controller[1];
+ }
+
+ if ('\\' === $controller[0]) {
+ $controller = ltrim($controller, '\\');
+ }
+
+ yield $this->container->get($controller)->get($argument->getName());
+ }
+}