96 lines
3.4 KiB
PHP
96 lines
3.4 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\Bundle\FrameworkBundle\Routing;
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use Symfony\Component\Config\Exception\LoaderLoadException;
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use Symfony\Component\Config\Loader\DelegatingLoader as BaseDelegatingLoader;
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use Symfony\Component\Config\Loader\LoaderResolverInterface;
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use Symfony\Component\Routing\RouteCollection;
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/**
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* DelegatingLoader delegates route loading to other loaders using a loader resolver.
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*
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* This implementation resolves the _controller attribute from the short notation
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* to the fully-qualified form (from a:b:c to class::method).
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*
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* @final
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*/
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class DelegatingLoader extends BaseDelegatingLoader
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{
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private $loading = false;
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private $defaultOptions;
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private $defaultRequirements;
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public function __construct(LoaderResolverInterface $resolver, array $defaultOptions = [], array $defaultRequirements = [])
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{
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$this->defaultOptions = $defaultOptions;
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$this->defaultRequirements = $defaultRequirements;
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parent::__construct($resolver);
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}
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/**
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* {@inheritdoc}
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*/
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public function load($resource, string $type = null): RouteCollection
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{
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if ($this->loading) {
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// This can happen if a fatal error occurs in parent::load().
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// Here is the scenario:
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// - while routes are being loaded by parent::load() below, a fatal error
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// occurs (e.g. parse error in a controller while loading annotations);
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// - PHP abruptly empties the stack trace, bypassing all catch/finally blocks;
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// it then calls the registered shutdown functions;
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// - the ErrorHandler catches the fatal error and re-injects it for rendering
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// thanks to HttpKernel->terminateWithException() (that calls handleException());
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// - at this stage, if we try to load the routes again, we must prevent
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// the fatal error from occurring a second time,
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// otherwise the PHP process would be killed immediately;
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// - while rendering the exception page, the router can be required
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// (by e.g. the web profiler that needs to generate an URL);
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// - this handles the case and prevents the second fatal error
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// by triggering an exception beforehand.
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throw new LoaderLoadException($resource, null, 0, null, $type);
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}
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$this->loading = true;
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try {
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$collection = parent::load($resource, $type);
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} finally {
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$this->loading = false;
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}
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foreach ($collection->all() as $route) {
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if ($this->defaultOptions) {
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$route->setOptions($route->getOptions() + $this->defaultOptions);
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}
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if ($this->defaultRequirements) {
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$route->setRequirements($route->getRequirements() + $this->defaultRequirements);
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}
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if (!\is_string($controller = $route->getDefault('_controller'))) {
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continue;
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}
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if (str_contains($controller, '::')) {
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continue;
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}
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$route->setDefault('_controller', $controller);
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}
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return $collection;
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}
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}
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