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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\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 bool $skipScalars = true; protected function processValue(mixed $value, bool $isRoot = false): mixed { if ($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); } }