<?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\Definition;
use Symfony\Component\DependencyInjection\Exception\RuntimeException;
use Symfony\Component\DependencyInjection\Reference;
/**
* Checks the validity of references.
*
* The following checks are performed by this pass:
* - target definitions are not abstract
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
class CheckReferenceValidityPass extends AbstractRecursivePass
{
protected function processValue($value, $isRoot = false)
{
if ($isRoot && $value instanceof Definition && ($value->isSynthetic() || $value->isAbstract())) {
return $value;
}
if ($value instanceof Reference && $this->container->hasDefinition((string) $value)) {
$targetDefinition = $this->container->getDefinition((string) $value);
if ($targetDefinition->isAbstract()) {
throw new RuntimeException(sprintf('The definition "%s" has a reference to an abstract definition "%s". Abstract definitions cannot be the target of references.', $this->currentId, $value));
}
}
return parent::processValue($value, $isRoot);
}
}