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Array.php (2322B)

      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     public function compile(Twig_Compiler $compiler)
     64     {
     65         $compiler->raw('array(');
     66         $first = true;
     67         foreach ($this->getKeyValuePairs() as $pair) {
     68             if (!$first) {
     69                 $compiler->raw(', ');
     70             }
     71             $first = false;
     72 
     73             $compiler
     74                 ->subcompile($pair['key'])
     75                 ->raw(' => ')
     76                 ->subcompile($pair['value'])
     77             ;
     78         }
     79         $compiler->raw(')');
     80     }
     81 }