--- /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\Compiler;
+
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
+
+/**
+ * A pass that might be run repeatedly.
+ *
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ */
+class RepeatedPass implements CompilerPassInterface
+{
+ /**
+ * @var bool
+ */
+ private $repeat = false;
+
+ /**
+ * @var RepeatablePassInterface[]
+ */
+ private $passes;
+
+ /**
+ * @param RepeatablePassInterface[] $passes An array of RepeatablePassInterface objects
+ *
+ * @throws InvalidArgumentException when the passes don't implement RepeatablePassInterface
+ */
+ public function __construct(array $passes)
+ {
+ foreach ($passes as $pass) {
+ if (!$pass instanceof RepeatablePassInterface) {
+ throw new InvalidArgumentException('$passes must be an array of RepeatablePassInterface.');
+ }
+
+ $pass->setRepeatedPass($this);
+ }
+
+ $this->passes = $passes;
+ }
+
+ /**
+ * Process the repeatable passes that run more than once.
+ *
+ * @param ContainerBuilder $container
+ */
+ public function process(ContainerBuilder $container)
+ {
+ do {
+ $this->repeat = false;
+ foreach ($this->passes as $pass) {
+ $pass->process($container);
+ }
+ } while ($this->repeat);
+ }
+
+ /**
+ * Sets if the pass should repeat.
+ */
+ public function setRepeat()
+ {
+ $this->repeat = true;
+ }
+
+ /**
+ * Returns the passes.
+ *
+ * @return RepeatablePassInterface[] An array of RepeatablePassInterface objects
+ */
+ public function getPasses()
+ {
+ return $this->passes;
+ }
+}