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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 | * Defines a variable. | |
14 | * | |
15 | * <pre> | |
16 | * {% set foo = 'foo' %} | |
17 | * | |
18 | * {% set foo = [1, 2] %} | |
19 | * | |
20 | * {% set foo = {'foo': 'bar'} %} | |
21 | * | |
22 | * {% set foo = 'foo' ~ 'bar' %} | |
23 | * | |
24 | * {% set foo, bar = 'foo', 'bar' %} | |
25 | * | |
26 | * {% set foo %}Some content{% endset %} | |
27 | * </pre> | |
28 | */ | |
29 | class Twig_TokenParser_Set extends Twig_TokenParser | |
30 | { | |
31 | /** | |
32 | * Parses a token and returns a node. | |
33 | * | |
34 | * @param Twig_Token $token A Twig_Token instance | |
35 | * | |
36 | * @return Twig_NodeInterface A Twig_NodeInterface instance | |
37 | */ | |
38 | public function parse(Twig_Token $token) | |
39 | { | |
40 | $lineno = $token->getLine(); | |
41 | $stream = $this->parser->getStream(); | |
42 | $names = $this->parser->getExpressionParser()->parseAssignmentExpression(); | |
43 | ||
44 | $capture = false; | |
45 | if ($stream->test(Twig_Token::OPERATOR_TYPE, '=')) { | |
46 | $stream->next(); | |
47 | $values = $this->parser->getExpressionParser()->parseMultitargetExpression(); | |
48 | ||
49 | $stream->expect(Twig_Token::BLOCK_END_TYPE); | |
50 | ||
51 | if (count($names) !== count($values)) { | |
52 | throw new Twig_Error_Syntax("When using set, you must have the same number of variables and assignments.", $stream->getCurrent()->getLine(), $stream->getFilename()); | |
53 | } | |
54 | } else { | |
55 | $capture = true; | |
56 | ||
57 | if (count($names) > 1) { | |
58 | throw new Twig_Error_Syntax("When using set with a block, you cannot have a multi-target.", $stream->getCurrent()->getLine(), $stream->getFilename()); | |
59 | } | |
60 | ||
61 | $stream->expect(Twig_Token::BLOCK_END_TYPE); | |
62 | ||
63 | $values = $this->parser->subparse(array($this, 'decideBlockEnd'), true); | |
64 | $stream->expect(Twig_Token::BLOCK_END_TYPE); | |
65 | } | |
66 | ||
67 | return new Twig_Node_Set($capture, $names, $values, $lineno, $this->getTag()); | |
68 | } | |
69 | ||
70 | public function decideBlockEnd(Twig_Token $token) | |
71 | { | |
72 | return $token->test('endset'); | |
73 | } | |
74 | ||
75 | /** | |
76 | * Gets the tag name associated with this token parser. | |
77 | * | |
78 | * @return string The tag name | |
79 | */ | |
80 | public function getTag() | |
81 | { | |
82 | return 'set'; | |
83 | } | |
84 | } |