annotate vendor/symfony/css-selector/Parser/Shortcut/EmptyStringParser.php @ 19:fa3358dc1485 tip

Add ndrum files
author Chris Cannam
date Wed, 28 Aug 2019 13:14:47 +0100
parents 129ea1e6d783
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Chris@0 1 <?php
Chris@0 2
Chris@0 3 /*
Chris@0 4 * This file is part of the Symfony package.
Chris@0 5 *
Chris@0 6 * (c) Fabien Potencier <fabien@symfony.com>
Chris@0 7 *
Chris@0 8 * For the full copyright and license information, please view the LICENSE
Chris@0 9 * file that was distributed with this source code.
Chris@0 10 */
Chris@0 11
Chris@0 12 namespace Symfony\Component\CssSelector\Parser\Shortcut;
Chris@0 13
Chris@0 14 use Symfony\Component\CssSelector\Node\ElementNode;
Chris@0 15 use Symfony\Component\CssSelector\Node\SelectorNode;
Chris@0 16 use Symfony\Component\CssSelector\Parser\ParserInterface;
Chris@0 17
Chris@0 18 /**
Chris@0 19 * CSS selector class parser shortcut.
Chris@0 20 *
Chris@0 21 * This shortcut ensure compatibility with previous version.
Chris@0 22 * - The parser fails to parse an empty string.
Chris@0 23 * - In the previous version, an empty string matches each tags.
Chris@0 24 *
Chris@0 25 * This component is a port of the Python cssselect library,
Chris@0 26 * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
Chris@0 27 *
Chris@0 28 * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
Chris@0 29 *
Chris@0 30 * @internal
Chris@0 31 */
Chris@0 32 class EmptyStringParser implements ParserInterface
Chris@0 33 {
Chris@0 34 /**
Chris@0 35 * {@inheritdoc}
Chris@0 36 */
Chris@0 37 public function parse($source)
Chris@0 38 {
Chris@0 39 // Matches an empty string
Chris@14 40 if ('' == $source) {
Chris@17 41 return [new SelectorNode(new ElementNode(null, '*'))];
Chris@0 42 }
Chris@0 43
Chris@17 44 return [];
Chris@0 45 }
Chris@0 46 }