35 lines
661 B
PHP
35 lines
661 B
PHP
|
<?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(')')
|
||
|
|
;
|
||
|
|
}
|
||
|
|
}
|