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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 | class Twig_Node_Expression_Array extends Twig_Node_Expression | |
12 | { | |
13 | protected $index; | |
14 | ||
15 | public function __construct(array $elements, $lineno) | |
16 | { | |
17 | parent::__construct($elements, array(), $lineno); | |
18 | ||
19 | $this->index = -1; | |
20 | foreach ($this->getKeyValuePairs() as $pair) { | |
21 | if ($pair['key'] instanceof Twig_Node_Expression_Constant && ctype_digit((string) $pair['key']->getAttribute('value')) && $pair['key']->getAttribute('value') > $this->index) { | |
22 | $this->index = $pair['key']->getAttribute('value'); | |
23 | } | |
24 | } | |
25 | } | |
26 | ||
27 | public function getKeyValuePairs() | |
28 | { | |
29 | $pairs = array(); | |
30 | ||
31 | foreach (array_chunk($this->nodes, 2) as $pair) { | |
32 | $pairs[] = array( | |
33 | 'key' => $pair[0], | |
34 | 'value' => $pair[1], | |
35 | ); | |
36 | } | |
37 | ||
38 | return $pairs; | |
39 | } | |
40 | ||
41 | public function hasElement(Twig_Node_Expression $key) | |
42 | { | |
43 | foreach ($this->getKeyValuePairs() as $pair) { | |
44 | // we compare the string representation of the keys | |
45 | // to avoid comparing the line numbers which are not relevant here. | |
46 | if ((string) $key == (string) $pair['key']) { | |
47 | return true; | |
48 | } | |
49 | } | |
50 | ||
51 | return false; | |
52 | } | |
53 | ||
54 | public function addElement(Twig_Node_Expression $value, Twig_Node_Expression $key = null) | |
55 | { | |
56 | if (null === $key) { | |
57 | $key = new Twig_Node_Expression_Constant(++$this->index, $value->getLine()); | |
58 | } | |
59 | ||
60 | array_push($this->nodes, $key, $value); | |
61 | } | |
62 | ||
63 | /** | |
64 | * Compiles the node to PHP. | |
65 | * | |
66 | * @param Twig_Compiler A Twig_Compiler instance | |
67 | */ | |
68 | public function compile(Twig_Compiler $compiler) | |
69 | { | |
70 | $compiler->raw('array('); | |
71 | $first = true; | |
72 | foreach ($this->getKeyValuePairs() as $pair) { | |
73 | if (!$first) { | |
74 | $compiler->raw(', '); | |
75 | } | |
76 | $first = false; | |
77 | ||
78 | $compiler | |
79 | ->subcompile($pair['key']) | |
80 | ->raw(' => ') | |
81 | ->subcompile($pair['value']) | |
82 | ; | |
83 | } | |
84 | $compiler->raw(')'); | |
85 | } | |
86 | } |