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1 | <?php |
2 | ||
3 | /* | |
4 | * This file is part of Twig. | |
5 | * | |
6 | * (c) 2009 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 | * Filters a section of a template by applying filters. | |
14 | * | |
15 | * <pre> | |
16 | * {% filter upper %} | |
17 | * This text becomes uppercase | |
18 | * {% endfilter %} | |
19 | * </pre> | |
20 | */ | |
21 | class Twig_TokenParser_Filter 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_NodeInterface A Twig_NodeInterface instance | |
29 | */ | |
30 | public function parse(Twig_Token $token) | |
31 | { | |
32 | $name = $this->parser->getVarName(); | |
33 | $ref = new Twig_Node_Expression_BlockReference(new Twig_Node_Expression_Constant($name, $token->getLine()), true, $token->getLine(), $this->getTag()); | |
34 | ||
35 | $filter = $this->parser->getExpressionParser()->parseFilterExpressionRaw($ref, $this->getTag()); | |
36 | $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE); | |
37 | ||
38 | $body = $this->parser->subparse(array($this, 'decideBlockEnd'), true); | |
39 | $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE); | |
40 | ||
41 | $block = new Twig_Node_Block($name, $body, $token->getLine()); | |
42 | $this->parser->setBlock($name, $block); | |
43 | ||
44 | return new Twig_Node_Print($filter, $token->getLine(), $this->getTag()); | |
45 | } | |
46 | ||
47 | public function decideBlockEnd(Twig_Token $token) | |
48 | { | |
49 | return $token->test('endfilter'); | |
50 | } | |
51 | ||
52 | /** | |
53 | * Gets the tag name associated with this token parser. | |
54 | * | |
55 | * @return string The tag name | |
56 | */ | |
57 | public function getTag() | |
58 | { | |
59 | return 'filter'; | |
60 | } | |
61 | } |