Verzeichnisstruktur phpBB-3.2.0
- Veröffentlicht
- 06.01.2017
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If.php
01 <?php
02
03 /*
04 * This file is part of Twig.
05 *
06 * (c) 2009 Fabien Potencier
07 * (c) 2009 Armin Ronacher
08 *
09 * For the full copyright and license information, please view the LICENSE
10 * file that was distributed with this source code.
11 */
12
13 /**
14 * Tests a condition.
15 *
16 * <pre>
17 * {% if users %}
18 * <ul>
19 * {% for user in users %}
20 * <li>{{ user.username|e }}</li>
21 * {% endfor %}
22 * </ul>
23 * {% endif %}
24 * </pre>
25 */
26 class Twig_TokenParser_If extends Twig_TokenParser
27 {
28 public function parse(Twig_Token $token)
29 {
30 $lineno = $token->getLine();
31 $expr = $this->parser->getExpressionParser()->parseExpression();
32 $stream = $this->parser->getStream();
33 $stream->expect(Twig_Token::BLOCK_END_TYPE);
34 $body = $this->parser->subparse(array($this, 'decideIfFork'));
35 $tests = array($expr, $body);
36 $else = null;
37
38 $end = false;
39 while (!$end) {
40 switch ($stream->next()->getValue()) {
41 case 'else':
42 $stream->expect(Twig_Token::BLOCK_END_TYPE);
43 $else = $this->parser->subparse(array($this, 'decideIfEnd'));
44 break;
45
46 case 'elseif':
47 $expr = $this->parser->getExpressionParser()->parseExpression();
48 $stream->expect(Twig_Token::BLOCK_END_TYPE);
49 $body = $this->parser->subparse(array($this, 'decideIfFork'));
50 $tests[] = $expr;
51 $tests[] = $body;
52 break;
53
54 case 'endif':
55 $end = true;
56 break;
57
58 default:
59 throw new Twig_Error_Syntax(sprintf('Unexpected end of template. Twig was looking for the following tags "else", "elseif", or "endif" to close the "if" block started at line %d).', $lineno), $stream->getCurrent()->getLine(), $stream->getFilename());
60 }
61 }
62
63 $stream->expect(Twig_Token::BLOCK_END_TYPE);
64
65 return new Twig_Node_If(new Twig_Node($tests), $else, $lineno, $this->getTag());
66 }
67
68 public function decideIfFork(Twig_Token $token)
69 {
70 return $token->test(array('elseif', 'else', 'endif'));
71 }
72
73 public function decideIfEnd(Twig_Token $token)
74 {
75 return $token->test(array('endif'));
76 }
77
78 public function getTag()
79 {
80 return 'if';
81 }
82 }
83