vendor/twig/twig/lib/Twig/Node/ForLoop.php

   1 <?php
   2
   3 /*
   4  * This file is part of Twig.
   5  *
   6  * (c) 2011 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  * Internal node used by the for node.
  14  *
  15  * @author Fabien Potencier <fabien@symfony.com>
  16  */
  17 class Twig_Node_ForLoop extends Twig_Node
  18 {
  19     public function __construct($lineno, $tag = null)
  20     {
  21         parent::__construct(array(), array('with_loop' => false, 'ifexpr' => false, 'else' => false), $lineno, $tag);
  22     }
  23
  24     /**
  25      * Compiles the node to PHP.
  26      *
  27      * @param Twig_Compiler A Twig_Compiler instance
  28      */
  29     public function compile(Twig_Compiler $compiler)
  30     {
  31         if ($this->getAttribute('else')) {
  32             $compiler->write("\$context['_iterated'] = true;\n");
  33         }
  34
  35         if ($this->getAttribute('with_loop')) {
  36             $compiler
  37                 ->write("++\$context['loop']['index0'];\n")
  38                 ->write("++\$context['loop']['index'];\n")
  39                 ->write("\$context['loop']['first'] = false;\n")
  40             ;
  41
  42             if (!$this->getAttribute('ifexpr')) {
  43                 $compiler
  44                     ->write("if (isset(\$context['loop']['length'])) {\n")
  45                     ->indent()
  46                     ->write("--\$context['loop']['revindex0'];\n")
  47                     ->write("--\$context['loop']['revindex'];\n")
  48                     ->write("\$context['loop']['last'] = 0 === \$context['loop']['revindex0'];\n")
  49                     ->outdent()
  50                     ->write("}\n")
  51                 ;
  52             }
  53         }
  54     }
  55 }