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1 | <?php |
2 | ||
3 | /* | |
4 | * This file is part of Twig. | |
5 | * | |
6 | * (c) 2011 Fabien Potencier | |
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 | /** | |
13 | * Imports blocks defined in another template into the current template. | |
14 | * | |
15 | * <pre> | |
16 | * {% extends "base.html" %} | |
17 | * | |
18 | * {% use "blocks.html" %} | |
19 | * | |
20 | * {% block title %}{% endblock %} | |
21 | * {% block content %}{% endblock %} | |
22 | * </pre> | |
23 | * | |
24 | * @see http://www.twig-project.org/doc/templates.html#horizontal-reuse for details. | |
25 | */ | |
26 | class Twig_TokenParser_Use extends Twig_TokenParser | |
27 | { | |
28 | /** | |
29 | * Parses a token and returns a node. | |
30 | * | |
31 | * @param Twig_Token $token A Twig_Token instance | |
32 | * | |
33 | * @return Twig_NodeInterface A Twig_NodeInterface instance | |
34 | */ | |
35 | public function parse(Twig_Token $token) | |
36 | { | |
37 | $template = $this->parser->getExpressionParser()->parseExpression(); | |
38 | $stream = $this->parser->getStream(); | |
39 | ||
40 | if (!$template instanceof Twig_Node_Expression_Constant) { | |
41 | throw new Twig_Error_Syntax('The template references in a "use" statement must be a string.', $stream->getCurrent()->getLine(), $stream->getFilename()); | |
42 | } | |
43 | ||
44 | $targets = array(); | |
45 | if ($stream->test('with')) { | |
46 | $stream->next(); | |
47 | ||
48 | do { | |
49 | $name = $stream->expect(Twig_Token::NAME_TYPE)->getValue(); | |
50 | ||
51 | $alias = $name; | |
52 | if ($stream->test('as')) { | |
53 | $stream->next(); | |
54 | ||
55 | $alias = $stream->expect(Twig_Token::NAME_TYPE)->getValue(); | |
56 | } | |
57 | ||
58 | $targets[$name] = new Twig_Node_Expression_Constant($alias, -1); | |
59 | ||
60 | if (!$stream->test(Twig_Token::PUNCTUATION_TYPE, ',')) { | |
61 | break; | |
62 | } | |
63 | ||
64 | $stream->next(); | |
65 | } while (true); | |
66 | } | |
67 | ||
68 | $stream->expect(Twig_Token::BLOCK_END_TYPE); | |
69 | ||
70 | $this->parser->addTrait(new Twig_Node(array('template' => $template, 'targets' => new Twig_Node($targets)))); | |
71 | } | |
72 | ||
73 | /** | |
74 | * Gets the tag name associated with this token parser. | |
75 | * | |
76 | * @return string The tag name | |
77 | */ | |
78 | public function getTag() | |
79 | { | |
80 | return 'use'; | |
81 | } | |
82 | } |