Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of the Symfony package.
Chris@0:  *
Chris@0:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Symfony\Component\CssSelector\Parser\Shortcut;
Chris@0: 
Chris@0: use Symfony\Component\CssSelector\Node\ElementNode;
Chris@0: use Symfony\Component\CssSelector\Node\SelectorNode;
Chris@0: use Symfony\Component\CssSelector\Parser\ParserInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * CSS selector class parser shortcut.
Chris@0:  *
Chris@0:  * This shortcut ensure compatibility with previous version.
Chris@0:  * - The parser fails to parse an empty string.
Chris@0:  * - In the previous version, an empty string matches each tags.
Chris@0:  *
Chris@0:  * This component is a port of the Python cssselect library,
Chris@0:  * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
Chris@0:  *
Chris@0:  * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
Chris@0:  *
Chris@0:  * @internal
Chris@0:  */
Chris@0: class EmptyStringParser implements ParserInterface
Chris@0: {
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function parse($source)
Chris@0:     {
Chris@0:         // Matches an empty string
Chris@14:         if ('' == $source) {
Chris@17:             return [new SelectorNode(new ElementNode(null, '*'))];
Chris@0:         }
Chris@0: 
Chris@17:         return [];
Chris@0:     }
Chris@0: }