NextHandler.php

<?php

/*
 * This file is part of the slince/middleware package.
 *
 * (c) Slince <taosikai@yeah.net>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Slince\Middleware;

use Interop\Http\Server\RequestHandlerInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;

class NextHandler implements RequestHandlerInterface
{
    /**
     * @var callable
     */
    protected $callback;

    public function __construct(callable $callback)
    {
        $this->callback = $callback;
    }

    /**
     * {@inheritdoc}
     */
    public function handle(ServerRequestInterface $request): ResponseInterface
    {
        return call_user_func($this->callback, $request);
    }
}