View file vendor/symfony/http-kernel/Controller/ContainerControllerResolver.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\HttpKernel\Controller;

use Psr\Container\ContainerInterface;
use Psr\Log\LoggerInterface;
use Symfony\Component\DependencyInjection\Container;

/**
 * A controller resolver searching for a controller in a psr-11 container when using the "service:method" notation.
 *
 * @author Fabien Potencier <[email protected]>
 * @author Maxime Steinhausser <[email protected]>
 */
class ContainerControllerResolver extends ControllerResolver
{
    protected $container;

    public function __construct(ContainerInterface $container, LoggerInterface $logger = null)
    {
        $this->container = $container;

        parent::__construct($logger);
    }

    protected function createController($controller)
    {
        if (1 === substr_count($controller, ':')) {
            $controller = str_replace(':', '::', $controller);
            @trigger_error(sprintf('Referencing controllers with a single colon is deprecated since Symfony 4.1. Use %s instead.', $controller), E_USER_DEPRECATED);
        }

        return parent::createController($controller);
    }

    /**
     * {@inheritdoc}
     */
    protected function instantiateController($class)
    {
        if ($this->container->has($class)) {
            return $this->container->get($class);
        }

        try {
            return parent::instantiateController($class);
        } catch (\Error $e) {
        }

        $this->throwExceptionIfControllerWasRemoved($class, $e);

        if ($e instanceof \ArgumentCountError) {
            throw new \InvalidArgumentException(sprintf('Controller "%s" has required constructor arguments and does not exist in the container. Did you forget to define such a service?', $class), 0, $e);
        }

        throw new \InvalidArgumentException(sprintf('Controller "%s" does neither exist as service nor as class', $class), 0, $e);
    }

    private function throwExceptionIfControllerWasRemoved(string $controller, \Throwable $previous)
    {
        if ($this->container instanceof Container && isset($this->container->getRemovedIds()[$controller])) {
            throw new \InvalidArgumentException(sprintf('Controller "%s" cannot be fetched from the container because it is private. Did you forget to tag the service with "controller.service_arguments"?', $controller), 0, $previous);
        }
    }
}