91 lines
2.6 KiB
PHP
91 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\Bundle\TwigBundle\CacheWarmer;
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use Psr\Container\ContainerInterface;
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use Symfony\Component\HttpKernel\CacheWarmer\CacheWarmerInterface;
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use Symfony\Contracts\Service\ServiceSubscriberInterface;
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use Twig\Environment;
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use Twig\Error\Error;
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/**
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* Generates the Twig cache for all templates.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class TemplateCacheWarmer implements CacheWarmerInterface, ServiceSubscriberInterface
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{
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private $container;
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private $twig;
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private $iterator;
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public function __construct(ContainerInterface $container, iterable $iterator)
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{
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// As this cache warmer is optional, dependencies should be lazy-loaded, that's why a container should be injected.
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$this->container = $container;
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$this->iterator = $iterator;
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}
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/**
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* {@inheritdoc}
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*
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* @return string[] A list of template files to preload on PHP 7.4+
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*/
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public function warmUp(string $cacheDir)
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{
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if (null === $this->twig) {
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$this->twig = $this->container->get('twig');
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}
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$files = [];
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foreach ($this->iterator as $template) {
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try {
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$template = $this->twig->load($template);
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if (\is_callable([$template, 'unwrap'])) {
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$files[] = (new \ReflectionClass($template->unwrap()))->getFileName();
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}
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} catch (Error $e) {
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/*
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* Problem during compilation, give up for this template (e.g. syntax errors).
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* Failing silently here allows to ignore templates that rely on functions that aren't available in
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* the current environment. For example, the WebProfilerBundle shouldn't be available in the prod
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* environment, but some templates that are never used in prod might rely on functions the bundle provides.
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* As we can't detect which templates are "really" important, we try to load all of them and ignore
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* errors. Error checks may be performed by calling the lint:twig command.
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*/
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}
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}
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return $files;
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}
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/**
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* {@inheritdoc}
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*/
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public function isOptional()
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{
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return true;
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}
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/**
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* {@inheritdoc}
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*/
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public static function getSubscribedServices()
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{
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return [
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'twig' => Environment::class,
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];
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}
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}
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