Initial Drupal 11 with DDEV setup

vendor/symfony/serializer/Mapping/Factory/ClassMetadataFactory.php

@@ -0,0 +1,67 @@
+<?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\Serializer\Mapping\Factory;
+
+use Symfony\Component\Serializer\Mapping\ClassMetadata;
+use Symfony\Component\Serializer\Mapping\ClassMetadataInterface;
+use Symfony\Component\Serializer\Mapping\Loader\LoaderInterface;
+
+/**
+ * Returns a {@link ClassMetadata}.
+ *
+ * @author Kévin Dunglas <dunglas@gmail.com>
+ */
+class ClassMetadataFactory implements ClassMetadataFactoryInterface
+{
+    use ClassResolverTrait;
+
+    /**
+     * @var array<string, ClassMetadataInterface>
+     */
+    private array $loadedClasses;
+
+    public function __construct(
+        private readonly LoaderInterface $loader,
+    ) {
+    }
+
+    public function getMetadataFor(string|object $value): ClassMetadataInterface
+    {
+        $class = $this->getClass($value);
+
+        if (isset($this->loadedClasses[$class])) {
+            return $this->loadedClasses[$class];
+        }
+
+        $classMetadata = new ClassMetadata($class);
+        $this->loader->loadClassMetadata($classMetadata);
+
+        $reflectionClass = $classMetadata->getReflectionClass();
+
+        // Include metadata from the parent class
+        if ($parent = $reflectionClass->getParentClass()) {
+            $classMetadata->merge($this->getMetadataFor($parent->name));
+        }
+
+        // Include metadata from all implemented interfaces
+        foreach ($reflectionClass->getInterfaces() as $interface) {
+            $classMetadata->merge($this->getMetadataFor($interface->name));
+        }
+
+        return $this->loadedClasses[$class] = $classMetadata;
+    }
+
+    public function hasMetadataFor(mixed $value): bool
+    {
+        return \is_object($value) || (\is_string($value) && (class_exists($value) || interface_exists($value, false)));
+    }
+}