Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of the Symfony package.
Chris@0:  *
Chris@0:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Symfony\Component\DependencyInjection\Compiler;
Chris@0: 
Chris@0: use Symfony\Component\DependencyInjection\Definition;
Chris@17: use Symfony\Component\DependencyInjection\Exception\RuntimeException;
Chris@0: use Symfony\Component\DependencyInjection\Reference;
Chris@0: 
Chris@0: /**
Chris@0:  * Checks the validity of references.
Chris@0:  *
Chris@0:  * The following checks are performed by this pass:
Chris@0:  * - target definitions are not abstract
Chris@0:  *
Chris@0:  * @author Johannes M. Schmitt <schmittjoh@gmail.com>
Chris@0:  */
Chris@14: class CheckReferenceValidityPass extends AbstractRecursivePass
Chris@0: {
Chris@14:     protected function processValue($value, $isRoot = false)
Chris@14:     {
Chris@14:         if ($isRoot && $value instanceof Definition && ($value->isSynthetic() || $value->isAbstract())) {
Chris@14:             return $value;
Chris@14:         }
Chris@14:         if ($value instanceof Reference && $this->container->hasDefinition((string) $value)) {
Chris@14:             $targetDefinition = $this->container->getDefinition((string) $value);
Chris@0: 
Chris@14:             if ($targetDefinition->isAbstract()) {
Chris@17:                 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, $value));
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@14:         return parent::processValue($value, $isRoot);
Chris@0:     }
Chris@0: }