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admin/phpMyAdmin/vendor/symfony/dependency-injection/Compiler/ResolveReferencesToAliasesPass.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\DependencyInjection\Compiler;
+
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Exception\ServiceCircularReferenceException;
+use Symfony\Component\DependencyInjection\Reference;
+
+/**
+ * Replaces all references to aliases with references to the actual service.
+ *
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ */
+class ResolveReferencesToAliasesPass extends AbstractRecursivePass
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function process(ContainerBuilder $container)
+    {
+        parent::process($container);
+
+        foreach ($container->getAliases() as $id => $alias) {
+            $aliasId = (string) $alias;
+            $this->currentId = $id;
+
+            if ($aliasId !== $defId = $this->getDefinitionId($aliasId, $container)) {
+                $container->setAlias($id, $defId)->setPublic($alias->isPublic())->setPrivate($alias->isPrivate());
+            }
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function processValue($value, $isRoot = false)
+    {
+        if (!$value instanceof Reference) {
+            return parent::processValue($value, $isRoot);
+        }
+
+        $defId = $this->getDefinitionId($id = (string) $value, $this->container);
+
+        return $defId !== $id ? new Reference($defId, $value->getInvalidBehavior()) : $value;
+    }
+
+    private function getDefinitionId(string $id, ContainerBuilder $container): string
+    {
+        if (!$container->hasAlias($id)) {
+            return $id;
+        }
+
+        $alias = $container->getAlias($id);
+
+        if ($alias->isDeprecated()) {
+            $referencingDefinition = $container->hasDefinition($this->currentId) ? $container->getDefinition($this->currentId) : $container->getAlias($this->currentId);
+            if (!$referencingDefinition->isDeprecated()) {
+                @trigger_error(sprintf('%s. It is being referenced by the "%s" %s.', rtrim($alias->getDeprecationMessage($id), '. '), $this->currentId, $container->hasDefinition($this->currentId) ? 'service' : 'alias'), \E_USER_DEPRECATED);
+            }
+        }
+
+        $seen = [];
+        do {
+            if (isset($seen[$id])) {
+                throw new ServiceCircularReferenceException($id, array_merge(array_keys($seen), [$id]));
+            }
+
+            $seen[$id] = true;
+            $id = (string) $container->getAlias($id);
+        } while ($container->hasAlias($id));
+
+        return $id;
+    }
+}