name : TransTokenParser.php <?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\TokenParser; use Symfony\Bridge\Twig\Node\TransNode; /** * Token Parser for the 'trans' tag. * * @author Fabien Potencier <fabien@symfony.com> */ class TransTokenParser extends \Twig_TokenParser { /** * Parses a token and returns a node. * * @param \Twig_Token $token A Twig_Token instance * * @return \Twig_NodeInterface A Twig_NodeInterface instance * * @throws \Twig_Error_Syntax */ public function parse(\Twig_Token $token) { $lineno = $token->getLine(); $stream = $this->parser->getStream(); $vars = new \Twig_Node_Expression_Array(array(), $lineno); $domain = null; $locale = null; if (!$stream->test(\Twig_Token::BLOCK_END_TYPE)) { if ($stream->test('with')) { // {% trans with vars %} $stream->next(); $vars = $this->parser->getExpressionParser()->parseExpression(); } if ($stream->test('from')) { // {% trans from "messages" %} $stream->next(); $domain = $this->parser->getExpressionParser()->parseExpression(); } if ($stream->test('into')) { // {% trans into "fr" %} $stream->next(); $locale = $this->parser->getExpressionParser()->parseExpression(); } elseif (!$stream->test(\Twig_Token::BLOCK_END_TYPE)) { throw new \Twig_Error_Syntax('Unexpected token. Twig was looking for the "with", "from", or "into" keyword.', $stream->getCurrent()->getLine(), $stream->getFilename()); } } // {% trans %}message{% endtrans %} $stream->expect(\Twig_Token::BLOCK_END_TYPE); $body = $this->parser->subparse(array($this, 'decideTransFork'), true); if (!$body instanceof \Twig_Node_Text && !$body instanceof \Twig_Node_Expression) { throw new \Twig_Error_Syntax('A message inside a trans tag must be a simple text.', $body->getLine(), $stream->getFilename()); } $stream->expect(\Twig_Token::BLOCK_END_TYPE); return new TransNode($body, $domain, null, $vars, $locale, $lineno, $this->getTag()); } public function decideTransFork($token) { return $token->test(array('endtrans')); } /** * Gets the tag name associated with this token parser. * * @return string The tag name */ public function getTag() { return 'trans'; } }