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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\CssSelector\Parser\Shortcut;
use Symfony\Component\CssSelector\Node\ElementNode;
use Symfony\Component\CssSelector\Node\SelectorNode;
use Symfony\Component\CssSelector\Parser\ParserInterface;
/**
* CSS selector class parser shortcut.
*
* This shortcut ensure compatibility with previous version.
* - The parser fails to parse an empty string.
* - In the previous version, an empty string matches each tags.
*
* This component is a port of the Python cssselector library,
* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
*
* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
*/
class EmptyStringParser implements ParserInterface
{
/**
* {@inheritdoc}
*/
public function parse($source)
{
// Matches an empty string
if ($source == '') {
return array(new SelectorNode(new ElementNode(null, '*')));
}
return array();
}
}