--- /dev/null
+<?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\Loader\Configurator;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class ReferenceConfigurator extends AbstractConfigurator
+{
+ /** @internal */
+ protected $id;
+
+ /** @internal */
+ protected $invalidBehavior = ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE;
+
+ public function __construct($id)
+ {
+ $this->id = $id;
+ }
+
+ /**
+ * @return $this
+ */
+ final public function ignoreOnInvalid()
+ {
+ $this->invalidBehavior = ContainerInterface::IGNORE_ON_INVALID_REFERENCE;
+
+ return $this;
+ }
+
+ /**
+ * @return $this
+ */
+ final public function nullOnInvalid()
+ {
+ $this->invalidBehavior = ContainerInterface::NULL_ON_INVALID_REFERENCE;
+
+ return $this;
+ }
+
+ /**
+ * @return $this
+ */
+ final public function ignoreOnUninitialized()
+ {
+ $this->invalidBehavior = ContainerInterface::IGNORE_ON_UNINITIALIZED_REFERENCE;
+
+ return $this;
+ }
+
+ public function __toString()
+ {
+ return $this->id;
+ }
+}