<?php

/*
 * This file is part of Twig.
 *
 * (c) 2011 Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

/**
 * Checks that a variable is null.
 *
 * <pre>
 *  {{ var is none }}
 * </pre>
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class Twig_Node_Expression_Test_Null extends Twig_Node_Expression_Test
{
  public function compile(Twig_Compiler $compiler)
  {
    $compiler->raw('(null === ')->subcompile($this->getNode('node'))->raw(')');
  }
}
