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\XPath\Extension;
Chris@0: 
Chris@0: use Symfony\Component\CssSelector\XPath\XPathExpr;
Chris@0: 
Chris@0: /**
Chris@0:  * XPath expression translator combination extension.
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 CombinationExtension extends AbstractExtension
Chris@0: {
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function getCombinationTranslators()
Chris@0:     {
Chris@17:         return [
Chris@17:             ' ' => [$this, 'translateDescendant'],
Chris@17:             '>' => [$this, 'translateChild'],
Chris@17:             '+' => [$this, 'translateDirectAdjacent'],
Chris@17:             '~' => [$this, 'translateIndirectAdjacent'],
Chris@17:         ];
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * @return XPathExpr
Chris@0:      */
Chris@0:     public function translateDescendant(XPathExpr $xpath, XPathExpr $combinedXpath)
Chris@0:     {
Chris@0:         return $xpath->join('/descendant-or-self::*/', $combinedXpath);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * @return XPathExpr
Chris@0:      */
Chris@0:     public function translateChild(XPathExpr $xpath, XPathExpr $combinedXpath)
Chris@0:     {
Chris@0:         return $xpath->join('/', $combinedXpath);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * @return XPathExpr
Chris@0:      */
Chris@0:     public function translateDirectAdjacent(XPathExpr $xpath, XPathExpr $combinedXpath)
Chris@0:     {
Chris@0:         return $xpath
Chris@0:             ->join('/following-sibling::', $combinedXpath)
Chris@0:             ->addNameTest()
Chris@0:             ->addCondition('position() = 1');
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * @return XPathExpr
Chris@0:      */
Chris@0:     public function translateIndirectAdjacent(XPathExpr $xpath, XPathExpr $combinedXpath)
Chris@0:     {
Chris@0:         return $xpath->join('/following-sibling::', $combinedXpath);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function getName()
Chris@0:     {
Chris@0:         return 'combination';
Chris@0:     }
Chris@0: }