ControllerResolver.php

<?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\Bundle\FrameworkBundle\Controller;

use Symfony\Component\HttpKernel\Controller\ContainerControllerResolver;

/**
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @final
 */
class ControllerResolver extends ContainerControllerResolver
{
    protected function instantiateController(string $class): object
    {
        $controller = parent::instantiateController($class);

        if ($controller instanceof AbstractController) {
            if (null === $previousContainer = $controller->setContainer($this->container)) {
                throw new \LogicException(\sprintf('"%s" has no container set, did you forget to define it as a service subscriber?', $class));
            }

            $controller->setContainer($previousContainer);
        }

        return $controller;
    }
}