name : EmptyStringParser.php <?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(); } }