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<?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\Bridge\Twig\Extension;
use Symfony\Bridge\Twig\NodeVisitor\TranslationDefaultDomainNodeVisitor;
use Symfony\Bridge\Twig\NodeVisitor\TranslationNodeVisitor;
use Symfony\Bridge\Twig\TokenParser\TransDefaultDomainTokenParser;
use Symfony\Bridge\Twig\TokenParser\TransTokenParser;
use Symfony\Contracts\Translation\TranslatorInterface;
use Symfony\Contracts\Translation\TranslatorTrait;
use Twig\Extension\AbstractExtension;
use Twig\NodeVisitor\NodeVisitorInterface;
use Twig\TwigFilter;
/**
* Provides integration of the Translation component with Twig.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
final class TranslationExtension extends AbstractExtension
{
private $translator;
private $translationNodeVisitor;
public function __construct(TranslatorInterface $translator = null, NodeVisitorInterface $translationNodeVisitor = null)
{
$this->translator = $translator;
$this->translationNodeVisitor = $translationNodeVisitor;
}
public function getTranslator(): TranslatorInterface
{
if (null === $this->translator) {
if (!interface_exists(TranslatorInterface::class)) {
throw new \LogicException(sprintf('You cannot use the "%s" if the Translation Contracts are not available. Try running "composer require symfony/translation".', __CLASS__));
}
$this->translator = new class() implements TranslatorInterface {
use TranslatorTrait;
};
}
return $this->translator;
}
/**
* {@inheritdoc}
*/
public function getFilters(): array
{
return [
new TwigFilter('trans', [$this, 'trans']),
];
}
/**
* {@inheritdoc}
*/
public function getTokenParsers(): array
{
return [
// {% trans %}Symfony is great!{% endtrans %}
new TransTokenParser(),
// {% trans_default_domain "foobar" %}
new TransDefaultDomainTokenParser(),
];
}
/**
* {@inheritdoc}
*/
public function getNodeVisitors(): array
{
return [$this->getTranslationNodeVisitor(), new TranslationDefaultDomainNodeVisitor()];
}
public function getTranslationNodeVisitor(): TranslationNodeVisitor
{
return $this->translationNodeVisitor ?: $this->translationNodeVisitor = new TranslationNodeVisitor();
}
public function trans(string $message, array $arguments = [], string $domain = null, string $locale = null, int $count = null): string
{
if (null !== $count) {
$arguments['%count%'] = $count;
}
return $this->getTranslator()->trans($message, $arguments, $domain, $locale);
}
}
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