ServiceValueResolver.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\Component\HttpKernel\Controller\ArgumentResolver;

use Psr\Container\ContainerInterface;
use Symfony\Component\DependencyInjection\Exception\RuntimeException;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\Controller\ValueResolverInterface;
use Symfony\Component\HttpKernel\ControllerMetadata\ArgumentMetadata;
use Symfony\Component\HttpKernel\Exception\NearMissValueResolverException;

/**
 * Yields a service keyed by _controller and argument name.
 *
 * @author Nicolas Grekas <p@tchwork.com>
 */
final class ServiceValueResolver implements ValueResolverInterface {
    public function __construct(ContainerInterface $container) {
    }
    public function resolve(Request $request, ArgumentMetadata $argument) : array {
        $controller = $request->attributes
            ->get('_controller');
        if (\is_array($controller) && \is_callable($controller, true) && \is_string($controller[0])) {
            $controller = $controller[0] . '::' . $controller[1];
        }
        elseif (!\is_string($controller) || '' === $controller) {
            return [];
        }
        if ('\\' === $controller[0]) {
            $controller = ltrim($controller, '\\');
        }
        if (!$this->container
            ->has($controller) && false !== ($i = strrpos($controller, ':'))) {
            $controller = substr($controller, 0, $i) . strtolower(substr($controller, $i));
        }
        if (!$this->container
            ->has($controller) || !$this->container
            ->get($controller)
            ->has($argument->getName())) {
            return [];
        }
        try {
            return [
                $this->container
                    ->get($controller)
                    ->get($argument->getName()),
            ];
        } catch (RuntimeException $e) {
            $what = 'argument $' . $argument->getName();
            $message = str_replace(\sprintf('service "%s"', $argument->getName()), $what, $e->getMessage());
            $what .= \sprintf(' of "%s()"', $controller);
            $message = preg_replace('/service "\\.service_locator\\.[^"]++"/', $what, $message);
            if ($e->getMessage() === $message) {
                $message = \sprintf('Cannot resolve %s: %s', $what, $message);
            }
            throw new NearMissValueResolverException($message, $e->getCode(), $e);
        }
    }

}