<?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 Psr\Container\ContainerInterface;
use Symfony\Component\DependencyInjection\Definition;
use Symfony\Component\DependencyInjection\Reference;
/**
* Compiler pass to inject their service locator to service subscribers.
*
* @author Nicolas Grekas <p@tchwork.com>
*/
class ResolveServiceSubscribersPass extends AbstractRecursivePass
{
private $serviceLocator;
protected function processValue($value, $isRoot = false)
{
if ($value instanceof Reference && $this->serviceLocator && ContainerInterface::class === $this->container->normalizeId($value)) {
return new Reference($this->serviceLocator);
}
if (!$value instanceof Definition) {
return parent::processValue($value, $isRoot);
}
$serviceLocator = $this->serviceLocator;
$this->serviceLocator = null;
if ($value->hasTag('container.service_subscriber.locator')) {
$this->serviceLocator = $value->getTag('container.service_subscriber.locator')[0]['id'];
$value->clearTag('container.service_subscriber.locator');
}
try {
return parent::processValue($value);
} finally {
$this->serviceLocator = $serviceLocator;
}
}
}