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vendor/symfony/framework-bundle/DependencyInjection/Compiler/ContainerBuilderDebugDumpPass.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\Bundle\FrameworkBundle\DependencyInjection\Compiler;
+
+use Symfony\Component\Config\ConfigCache;
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Dumper\XmlDumper;
+
+/**
+ * Dumps the ContainerBuilder to a cache file so that it can be used by
+ * debugging tools such as the debug:container console command.
+ *
+ * @author Ryan Weaver <ryan@thatsquality.com>
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class ContainerBuilderDebugDumpPass implements CompilerPassInterface
+{
+    public function process(ContainerBuilder $container): void
+    {
+        if (!$container->getParameter('debug.container.dump')) {
+            return;
+        }
+
+        $cache = new ConfigCache($container->getParameter('debug.container.dump'), true);
+        if (!$cache->isFresh()) {
+            $cache->write((new XmlDumper($container))->dump(), $container->getResources());
+        }
+    }
+}