1 <?php

     2 

     3 /*

     4  * This file is part of the Symfony package.

     5  *

     6  * (c) Fabien Potencier <fabien@symfony.com>

     7  *

     8  * For the full copyright and license information, please view the LICENSE

     9  * file that was distributed with this source code.

    10  */

    11 

    12 namespace Symfony\Bridge\Twig\TokenParser;

    13 

    14 use Symfony\Bridge\Twig\Node\TransNode;

    15 

    16 /**

    17  *

    18  *

    19  * @author Fabien Potencier <fabien@symfony.com>

    20  */

    21 class TransTokenParser extends \Twig_TokenParser

    22 {

    23     /**

    24      * Parses a token and returns a node.

    25      *

    26      * @param  \Twig_Token $token A Twig_Token instance

    27      *

    28      * @return \Twig_NodeInterface A Twig_NodeInterface instance

    29      */

    30     public function parse(\Twig_Token $token)

    31     {

    32         $lineno = $token->getLine();

    33         $stream = $this->parser->getStream();

    34 

    35         $vars = new \Twig_Node_Expression_Array(array(), $lineno);

    36         $domain = new \Twig_Node_Expression_Constant('messages', $lineno);

    37         $locale = null;

    38         if (!$stream->test(\Twig_Token::BLOCK_END_TYPE)) {

    39             if ($stream->test('with')) {

    40                 // {% trans with vars %}

    41                 $stream->next();

    42                 $vars = $this->parser->getExpressionParser()->parseExpression();

    43             }

    44 

    45             if ($stream->test('from')) {

    46                 // {% trans from "messages" %}

    47                 $stream->next();

    48                 $domain = $this->parser->getExpressionParser()->parseExpression();

    49             }

    50 

    51             if ($stream->test('into')) {

    52                 // {% trans into "fr" %}

    53                 $stream->next();

    54                 $locale =  $this->parser->getExpressionParser()->parseExpression();

    55             } elseif (!$stream->test(\Twig_Token::BLOCK_END_TYPE)) {

    56                 throw new \Twig_Error_Syntax('Unexpected token. Twig was looking for the "with" or "from" keyword.');

    57             }

    58         }

    59 

    60         // {% trans %}message{% endtrans %}

    61         $stream->expect(\Twig_Token::BLOCK_END_TYPE);

    62         $body = $this->parser->subparse(array($this, 'decideTransFork'), true);

    63 

    64         if (!$body instanceof \Twig_Node_Text && !$body instanceof \Twig_Node_Expression) {

    65             throw new \Twig_Error_Syntax('A message must be a simple text');

    66         }

    67 

    68         $stream->expect(\Twig_Token::BLOCK_END_TYPE);

    69 

    70         return new TransNode($body, $domain, null, $vars, $locale, $lineno, $this->getTag());

    71     }

    72 

    73     public function decideTransFork($token)

    74     {

    75         return $token->test(array('endtrans'));

    76     }

    77 

    78     /**

    79      * Gets the tag name associated with this token parser.

    80      *

    81      * @return string The tag name

    82      */

    83     public function getTag()

    84     {

    85         return 'trans';

    86     }

    87 }