--- /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\Argument;
+
+use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
+use Symfony\Component\DependencyInjection\Reference;
+
+/**
+ * Represents a collection of values to lazily iterate over.
+ *
+ * @author Titouan Galopin <galopintitouan@gmail.com>
+ */
+class IteratorArgument implements ArgumentInterface
+{
+ private $values;
+
+ /**
+ * @param Reference[] $values
+ */
+ public function __construct(array $values)
+ {
+ $this->setValues($values);
+ }
+
+ /**
+ * @return array The values to lazily iterate over
+ */
+ public function getValues()
+ {
+ return $this->values;
+ }
+
+ /**
+ * @param Reference[] $values The service references to lazily iterate over
+ */
+ public function setValues(array $values)
+ {
+ foreach ($values as $k => $v) {
+ if (null !== $v && !$v instanceof Reference) {
+ throw new InvalidArgumentException(sprintf('An IteratorArgument must hold only Reference instances, "%s" given.', is_object($v) ? get_class($v) : gettype($v)));
+ }
+ }
+
+ $this->values = $values;
+ }
+}