131 lines
3.4 KiB
PHP
131 lines
3.4 KiB
PHP
<?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\Bridge\Twig;
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use Symfony\Component\Templating\EngineInterface;
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use Symfony\Component\Templating\StreamingEngineInterface;
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use Symfony\Component\Templating\TemplateNameParserInterface;
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use Symfony\Component\Templating\TemplateReferenceInterface;
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use Twig\Environment;
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use Twig\Error\Error;
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use Twig\Error\LoaderError;
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use Twig\Loader\ExistsLoaderInterface;
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use Twig\Template;
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/**
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* This engine knows how to render Twig templates.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class TwigEngine implements EngineInterface, StreamingEngineInterface
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{
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protected $environment;
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protected $parser;
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public function __construct(Environment $environment, TemplateNameParserInterface $parser)
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{
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$this->environment = $environment;
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$this->parser = $parser;
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}
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/**
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* {@inheritdoc}
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*
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* It also supports Template as name parameter.
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*
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* @throws Error if something went wrong like a thrown exception while rendering the template
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*/
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public function render($name, array $parameters = [])
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{
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return $this->load($name)->render($parameters);
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}
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/**
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* {@inheritdoc}
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*
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* It also supports Template as name parameter.
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*
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* @throws Error if something went wrong like a thrown exception while rendering the template
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*/
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public function stream($name, array $parameters = [])
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{
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$this->load($name)->display($parameters);
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}
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/**
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* {@inheritdoc}
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*
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* It also supports Template as name parameter.
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*/
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public function exists($name)
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{
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if ($name instanceof Template) {
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return true;
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}
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$loader = $this->environment->getLoader();
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if ($loader instanceof ExistsLoaderInterface || method_exists($loader, 'exists')) {
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return $loader->exists((string) $name);
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}
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try {
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// cast possible TemplateReferenceInterface to string because the
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// EngineInterface supports them but LoaderInterface does not
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$loader->getSourceContext((string) $name)->getCode();
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} catch (LoaderError $e) {
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return false;
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}
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return true;
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}
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/**
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* {@inheritdoc}
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*
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* It also supports Template as name parameter.
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*/
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public function supports($name)
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{
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if ($name instanceof Template) {
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return true;
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}
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$template = $this->parser->parse($name);
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return 'twig' === $template->get('engine');
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}
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/**
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* Loads the given template.
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*
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* @param string|TemplateReferenceInterface|Template $name A template name or an instance of
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* TemplateReferenceInterface or Template
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*
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* @return Template
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*
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* @throws \InvalidArgumentException if the template does not exist
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*/
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protected function load($name)
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{
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if ($name instanceof Template) {
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return $name;
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}
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try {
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return $this->environment->loadTemplate((string) $name);
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} catch (LoaderError $e) {
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throw new \InvalidArgumentException($e->getMessage(), $e->getCode(), $e);
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}
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}
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}
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