vendor/twig/twig/lib/Twig/Node/Expression/Array.php

   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 }