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- 06.01.2017
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TransTokenParser.php
01 <?php
02
03 /*
04 * This file is part of the Symfony package.
05 *
06 * (c) Fabien Potencier <fabien@symfony.com>
07 *
08 * For the full copyright and license information, please view the LICENSE
09 * 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 * Token Parser for the 'trans' tag.
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_Node A Twig_Node instance
29 *
30 * @throws \Twig_Error_Syntax
31 */
32 public function parse(\Twig_Token $token)
33 {
34 $lineno = $token->getLine();
35 $stream = $this->parser->getStream();
36
37 $vars = new \Twig_Node_Expression_Array(array(), $lineno);
38 $domain = null;
39 $locale = null;
40 if (!$stream->test(\Twig_Token::BLOCK_END_TYPE)) {
41 if ($stream->test('with')) {
42 // {% trans with vars %}
43 $stream->next();
44 $vars = $this->parser->getExpressionParser()->parseExpression();
45 }
46
47 if ($stream->test('from')) {
48 // {% trans from "messages" %}
49 $stream->next();
50 $domain = $this->parser->getExpressionParser()->parseExpression();
51 }
52
53 if ($stream->test('into')) {
54 // {% trans into "fr" %}
55 $stream->next();
56 $locale = $this->parser->getExpressionParser()->parseExpression();
57 } elseif (!$stream->test(\Twig_Token::BLOCK_END_TYPE)) {
58 throw new \Twig_Error_Syntax('Unexpected token. Twig was looking for the "with", "from", or "into" keyword.', $stream->getCurrent()->getLine(), $stream->getFilename());
59 }
60 }
61
62 // {% trans %}message{% endtrans %}
63 $stream->expect(\Twig_Token::BLOCK_END_TYPE);
64 $body = $this->parser->subparse(array($this, 'decideTransFork'), true);
65
66 if (!$body instanceof \Twig_Node_Text && !$body instanceof \Twig_Node_Expression) {
67 throw new \Twig_Error_Syntax('A message inside a trans tag must be a simple text.', $body->getLine(), $stream->getFilename());
68 }
69
70 $stream->expect(\Twig_Token::BLOCK_END_TYPE);
71
72 return new TransNode($body, $domain, null, $vars, $locale, $lineno, $this->getTag());
73 }
74
75 public function decideTransFork($token)
76 {
77 return $token->test(array('endtrans'));
78 }
79
80 /**
81 * Gets the tag name associated with this token parser.
82 *
83 * @return string The tag name
84 */
85 public function getTag()
86 {
87 return 'trans';
88 }
89 }
90