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- Veröffentlicht
- 28.08.2024
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UseTokenParser.php
01 <?php
02
03 /*
04 * This file is part of Twig.
05 *
06 * (c) Fabien Potencier
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 Twig\TokenParser;
13
14 use Twig\Error\SyntaxError;
15 use Twig\Node\Expression\ConstantExpression;
16 use Twig\Node\Node;
17 use Twig\Token;
18
19 /**
20 * Imports blocks defined in another template into the current template.
21 *
22 * {% extends "base.html" %}
23 *
24 * {% use "blocks.html" %}
25 *
26 * {% block title %}{% endblock %}
27 * {% block content %}{% endblock %}
28 *
29 * @see https://twig.symfony.com/doc/templates.html#horizontal-reuse for details.
30 */
31 final class UseTokenParser extends AbstractTokenParser
32 {
33 public function parse(Token $token)
34 {
35 $template = $this->parser->getExpressionParser()->parseExpression();
36 $stream = $this->parser->getStream();
37
38 if (!$template instanceof ConstantExpression) {
39 throw new SyntaxError('The template references in a "use" statement must be a string.', $stream->getCurrent()->getLine(), $stream->getSourceContext());
40 }
41
42 $targets = [];
43 if ($stream->nextIf('with')) {
44 do {
45 $name = $stream->expect(/* Token::NAME_TYPE */ 5)->getValue();
46
47 $alias = $name;
48 if ($stream->nextIf('as')) {
49 $alias = $stream->expect(/* Token::NAME_TYPE */ 5)->getValue();
50 }
51
52 $targets[$name] = new ConstantExpression($alias, -1);
53
54 if (!$stream->nextIf(/* Token::PUNCTUATION_TYPE */ 9, ',')) {
55 break;
56 }
57 } while (true);
58 }
59
60 $stream->expect(/* Token::BLOCK_END_TYPE */ 3);
61
62 $this->parser->addTrait(new Node(['template' => $template, 'targets' => new Node($targets)]));
63
64 return new Node();
65 }
66
67 public function getTag()
68 {
69 return 'use';
70 }
71 }
72
73 class_alias('Twig\TokenParser\UseTokenParser', 'Twig_TokenParser_Use');
74