Verzeichnisstruktur phpBB-3.1.0
- Veröffentlicht
- 27.10.2014
So funktioniert es
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Block.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 * Marks a section of a template as being reusable.
15 *
16 * <pre>
17 * {% block head %}
18 * <link rel="stylesheet" href="style.css" />
19 * <title>{% block title %}{% endblock %} - My Webpage</title>
20 * {% endblock %}
21 * </pre>
22 */
23 class Twig_TokenParser_Block extends Twig_TokenParser
24 {
25 /**
26 * Parses a token and returns a node.
27 *
28 * @param Twig_Token $token A Twig_Token instance
29 *
30 * @return Twig_NodeInterface A Twig_NodeInterface instance
31 */
32 public function parse(Twig_Token $token)
33 {
34 $lineno = $token->getLine();
35 $stream = $this->parser->getStream();
36 $name = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
37 if ($this->parser->hasBlock($name)) {
38 throw new Twig_Error_Syntax(sprintf("The block '$name' has already been defined line %d", $this->parser->getBlock($name)->getLine()), $stream->getCurrent()->getLine(), $stream->getFilename());
39 }
40 $this->parser->setBlock($name, $block = new Twig_Node_Block($name, new Twig_Node(array()), $lineno));
41 $this->parser->pushLocalScope();
42 $this->parser->pushBlockStack($name);
43
44 if ($stream->test(Twig_Token::BLOCK_END_TYPE)) {
45 $stream->next();
46
47 $body = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
48 if ($stream->test(Twig_Token::NAME_TYPE)) {
49 $value = $stream->next()->getValue();
50
51 if ($value != $name) {
52 throw new Twig_Error_Syntax(sprintf("Expected endblock for block '$name' (but %s given)", $value), $stream->getCurrent()->getLine(), $stream->getFilename());
53 }
54 }
55 } else {
56 $body = new Twig_Node(array(
57 new Twig_Node_Print($this->parser->getExpressionParser()->parseExpression(), $lineno),
58 ));
59 }
60 $stream->expect(Twig_Token::BLOCK_END_TYPE);
61
62 $block->setNode('body', $body);
63 $this->parser->popBlockStack();
64 $this->parser->popLocalScope();
65
66 return new Twig_Node_BlockReference($name, $lineno, $this->getTag());
67 }
68
69 public function decideBlockEnd(Twig_Token $token)
70 {
71 return $token->test('endblock');
72 }
73
74 /**
75 * Gets the tag name associated with this token parser.
76 *
77 * @return string The tag name
78 */
79 public function getTag()
80 {
81 return 'block';
82 }
83 }
84