TraceableValueResolver.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 Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\Controller\ValueResolverInterface;
use Symfony\Component\HttpKernel\ControllerMetadata\ArgumentMetadata;
use Symfony\Component\Stopwatch\Stopwatch;

/**
 * Provides timing information via the stopwatch.
 *
 * @author Iltar van der Berg <kjarli@gmail.com>
 */
final class TraceableValueResolver implements ValueResolverInterface {
    public function __construct(ValueResolverInterface $inner, Stopwatch $stopwatch) {
    }
    public function resolve(Request $request, ArgumentMetadata $argument) : iterable {
        $method = $this->inner::class . '::' . __FUNCTION__;
        $this->stopwatch
            ->start($method, 'controller.argument_value_resolver');
        yield from $this->inner
            ->resolve($request, $argument);
        $this->stopwatch
            ->stop($method);
    }

}