vendor/symfony/http-foundation/RequestStack.php

这里只显示每个文件的开头 60 行。登录后可以解锁完整代码。

微信扫码关注公众号，代码整理好后第一时间通知你。

<?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\HttpFoundation;

use Symfony\Component\HttpFoundation\Exception\SessionNotFoundException;
use Symfony\Component\HttpFoundation\Session\SessionInterface;

/**
 * Request stack that controls the lifecycle of requests.
 *
 * @author Benjamin Eberlei <kontakt@beberlei.de>
 */
class RequestStack
{
    /**
     * @var Request[]
     */
    private $requests = [];

    /**
     * Pushes a Request on the stack.
     *
     * This method should generally not be called directly as the stack
     * management should be taken care of by the application itself.
     */
    public function push(Request $request)
    {
        $this->requests[] = $request;
    }

    /**
     * Pops the current request from the stack.
     *
     * This operation lets the current request go out of scope.
     *
     * This method should generally not be called directly as the stack
     * management should be taken care of by the application itself.
     *
     * @return Request|null
     */
    public function pop()
    {
        if (!$this->requests) {
            return null;
        }

        return array_pop($this->requests);
    }

    /**
     * @return Request|null