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vendor/symfony/dependency-injection/Compiler/RemovePrivateAliasesPass.php

@@ -0,0 +1,39 @@
+<?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;
+
+/**
+ * Remove private aliases from the container. They were only used to establish
+ * dependencies between services, and these dependencies have been resolved in
+ * one of the previous passes.
+ *
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ */
+class RemovePrivateAliasesPass implements CompilerPassInterface
+{
+    /**
+     * Removes private aliases from the ContainerBuilder.
+     */
+    public function process(ContainerBuilder $container)
+    {
+        foreach ($container->getAliases() as $id => $alias) {
+            if ($alias->isPublic() || $alias->isPrivate()) {
+                continue;
+            }
+
+            $container->removeAlias($id);
+            $container->log($this, sprintf('Removed service "%s"; reason: private alias.', $id));
+        }
+    }
+}