--- /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;
+
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpKernel\ControllerMetadata\ArgumentMetadata;
+
+/**
+ * Responsible for resolving the value of an argument based on its metadata.
+ *
+ * @author Iltar van der Berg <kjarli@gmail.com>
+ */
+interface ArgumentValueResolverInterface
+{
+ /**
+ * Whether this resolver can resolve the value for the given ArgumentMetadata.
+ *
+ * @param Request $request
+ * @param ArgumentMetadata $argument
+ *
+ * @return bool
+ */
+ public function supports(Request $request, ArgumentMetadata $argument);
+
+ /**
+ * Returns the possible value(s).
+ *
+ * @param Request $request
+ * @param ArgumentMetadata $argument
+ *
+ * @return \Generator
+ */
+ public function resolve(Request $request, ArgumentMetadata $argument);
+}