<?php
/*
* This file is part of Twig.
*
* (c) Fabien Potencier
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Twig\Node\Expression\Test;
use Twig\Compiler;
use Twig\Node\Expression\TestExpression;
/**
* Checks that a variable is null.
*
* {{ var is none }}
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class NullTest extends TestExpression
{
public function compile(Compiler $compiler): void
{
$compiler
->raw('(null === ')
->subcompile($this->getNode('node'))
->raw(')')
;
}
}