www.aleph1.co.uk Git - yaffs-website/blob - vendor/symfony/expression-language/Node/GetAttrNode.php

   1 <?php
   2
   3 /*
   4  * This file is part of the Symfony package.
   5  *
   6  * (c) Fabien Potencier <fabien@symfony.com>
   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 namespace Symfony\Component\ExpressionLanguage\Node;
  13
  14 use Symfony\Component\ExpressionLanguage\Compiler;
  15
  16 /**
  17  * @author Fabien Potencier <fabien@symfony.com>
  18  *
  19  * @internal
  20  */
  21 class GetAttrNode extends Node
  22 {
  23     const PROPERTY_CALL = 1;
  24     const METHOD_CALL = 2;
  25     const ARRAY_CALL = 3;
  26
  27     public function __construct(Node $node, Node $attribute, ArrayNode $arguments, $type)
  28     {
  29         parent::__construct(
  30             array('node' => $node, 'attribute' => $attribute, 'arguments' => $arguments),
  31             array('type' => $type)
  32         );
  33     }
  34
  35     public function compile(Compiler $compiler)
  36     {
  37         switch ($this->attributes['type']) {
  38             case self::PROPERTY_CALL:
  39                 $compiler
  40                     ->compile($this->nodes['node'])
  41                     ->raw('->')
  42                     ->raw($this->nodes['attribute']->attributes['value'])
  43                 ;
  44                 break;
  45
  46             case self::METHOD_CALL:
  47                 $compiler
  48                     ->compile($this->nodes['node'])
  49                     ->raw('->')
  50                     ->raw($this->nodes['attribute']->attributes['value'])
  51                     ->raw('(')
  52                     ->compile($this->nodes['arguments'])
  53                     ->raw(')')
  54                 ;
  55                 break;
  56
  57             case self::ARRAY_CALL:
  58                 $compiler
  59                     ->compile($this->nodes['node'])
  60                     ->raw('[')
  61                     ->compile($this->nodes['attribute'])->raw(']')
  62                 ;
  63                 break;
  64         }
  65     }
  66
  67     public function evaluate($functions, $values)
  68     {
  69         switch ($this->attributes['type']) {
  70             case self::PROPERTY_CALL:
  71                 $obj = $this->nodes['node']->evaluate($functions, $values);
  72                 if (!is_object($obj)) {
  73                     throw new \RuntimeException('Unable to get a property on a non-object.');
  74                 }
  75
  76                 $property = $this->nodes['attribute']->attributes['value'];
  77
  78                 return $obj->$property;
  79
  80             case self::METHOD_CALL:
  81                 $obj = $this->nodes['node']->evaluate($functions, $values);
  82                 if (!is_object($obj)) {
  83                     throw new \RuntimeException('Unable to get a property on a non-object.');
  84                 }
  85
  86                 return call_user_func_array(array($obj, $this->nodes['attribute']->attributes['value']), $this->nodes['arguments']->evaluate($functions, $values));
  87
  88             case self::ARRAY_CALL:
  89                 $array = $this->nodes['node']->evaluate($functions, $values);
  90                 if (!is_array($array) && !$array instanceof \ArrayAccess) {
  91                     throw new \RuntimeException('Unable to get an item on a non-array.');
  92                 }
  93
  94                 return $array[$this->nodes['attribute']->evaluate($functions, $values)];
  95         }
  96     }
  97 }