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<?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;
use Psr\Container\ContainerInterface;
use Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException;
/**
* Turns public and "container.reversible" services back to their ids.
*
* @author Nicolas Grekas <p@tchwork.com>
*/
final class ReverseContainer
{
private $serviceContainer;
private $reversibleLocator;
private $tagName;
private $getServiceId;
public function __construct(Container $serviceContainer, ContainerInterface $reversibleLocator, string $tagName = 'container.reversible')
{
$this->serviceContainer = $serviceContainer;
$this->reversibleLocator = $reversibleLocator;
$this->tagName = $tagName;
$this->getServiceId = \Closure::bind(function ($service): ?string {
return array_search($service, $this->services, true) ?: array_search($service, $this->privates, true) ?: null;
}, $serviceContainer, Container::class);
}
/**
* Returns the id of the passed object when it exists as a service.
*
* To be reversible, services need to be either public or be tagged with "container.reversible".
*
* @param object $service
*/
public function getId($service): ?string
{
if ($this->serviceContainer === $service) {
return 'service_container';
}
if (null === $id = ($this->getServiceId)($service)) {
return null;
}
if ($this->serviceContainer->has($id) || $this->reversibleLocator->has($id)) {
return $id;
}
return null;
}
/**
* @return object
*
* @throws ServiceNotFoundException When the service is not reversible
*/
public function getService(string $id)
{
if ($this->serviceContainer->has($id)) {
return $this->serviceContainer->get($id);
}
if ($this->reversibleLocator->has($id)) {
return $this->reversibleLocator->get($id);
}
if (isset($this->serviceContainer->getRemovedIds()[$id])) {
throw new ServiceNotFoundException($id, null, null, [], sprintf('The "%s" service is private and cannot be accessed by reference. You should either make it public, or tag it as "%s".', $id, $this->tagName));
}
// will throw a ServiceNotFoundException
$this->serviceContainer->get($id);
}
}
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