108 lines
2.6 KiB
PHP
108 lines
2.6 KiB
PHP
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\HttpFoundation;
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use Symfony\Component\HttpFoundation\Exception\SessionNotFoundException;
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use Symfony\Component\HttpFoundation\Session\SessionInterface;
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/**
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* Request stack that controls the lifecycle of requests.
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*
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* @author Benjamin Eberlei <kontakt@beberlei.de>
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*/
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class RequestStack
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{
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/**
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* @var Request[]
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*/
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private array $requests = [];
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/**
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* Pushes a Request on the stack.
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*
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* This method should generally not be called directly as the stack
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* management should be taken care of by the application itself.
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*/
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public function push(Request $request)
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{
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$this->requests[] = $request;
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}
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/**
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* Pops the current request from the stack.
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*
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* This operation lets the current request go out of scope.
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*
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* This method should generally not be called directly as the stack
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* management should be taken care of by the application itself.
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*/
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public function pop(): ?Request
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{
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if (!$this->requests) {
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return null;
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}
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return array_pop($this->requests);
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}
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public function getCurrentRequest(): ?Request
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{
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return end($this->requests) ?: null;
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}
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/**
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* Gets the main request.
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*
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* Be warned that making your code aware of the main request
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* might make it un-compatible with other features of your framework
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* like ESI support.
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*/
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public function getMainRequest(): ?Request
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{
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if (!$this->requests) {
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return null;
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}
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return $this->requests[0];
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}
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/**
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* Returns the parent request of the current.
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*
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* Be warned that making your code aware of the parent request
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* might make it un-compatible with other features of your framework
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* like ESI support.
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*
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* If current Request is the main request, it returns null.
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*/
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public function getParentRequest(): ?Request
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{
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$pos = \count($this->requests) - 2;
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return $this->requests[$pos] ?? null;
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}
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/**
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* Gets the current session.
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*
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* @throws SessionNotFoundException
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*/
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public function getSession(): SessionInterface
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{
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if ((null !== $request = end($this->requests) ?: null) && $request->hasSession()) {
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return $request->getSession();
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}
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throw new SessionNotFoundException();
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}
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}
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