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vendor/symfony/http-kernel/DependencyInjection/FragmentRendererPass.php

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+<?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\DependencyInjection;
+
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\Compiler\ServiceLocatorTagPass;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
+use Symfony\Component\DependencyInjection\Reference;
+use Symfony\Component\HttpKernel\Fragment\FragmentRendererInterface;
+
+/**
+ * Adds services tagged kernel.fragment_renderer as HTTP content rendering strategies.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class FragmentRendererPass implements CompilerPassInterface
+{
+    /**
+     * @return void
+     */
+    public function process(ContainerBuilder $container)
+    {
+        if (!$container->hasDefinition('fragment.handler')) {
+            return;
+        }
+
+        $definition = $container->getDefinition('fragment.handler');
+        $renderers = [];
+        foreach ($container->findTaggedServiceIds('kernel.fragment_renderer', true) as $id => $tags) {
+            $def = $container->getDefinition($id);
+            $class = $container->getParameterBag()->resolveValue($def->getClass());
+
+            if (!$r = $container->getReflectionClass($class)) {
+                throw new InvalidArgumentException(sprintf('Class "%s" used for service "%s" cannot be found.', $class, $id));
+            }
+            if (!$r->isSubclassOf(FragmentRendererInterface::class)) {
+                throw new InvalidArgumentException(sprintf('Service "%s" must implement interface "%s".', $id, FragmentRendererInterface::class));
+            }
+
+            foreach ($tags as $tag) {
+                $renderers[$tag['alias']] = new Reference($id);
+            }
+        }
+
+        $definition->replaceArgument(0, ServiceLocatorTagPass::register($container, $renderers));
+    }
+}