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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\CssSelector\XPath\Extension;
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use Symfony\Component\CssSelector\XPath\XPathExpr;
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/**
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* XPath expression translator combination extension.
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*
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* This component is a port of the Python cssselect library,
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* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
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*
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* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
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*
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* @internal
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*/
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class CombinationExtension extends AbstractExtension
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{
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public function getCombinationTranslators(): array
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{
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return [
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' ' => $this->translateDescendant(...),
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'>' => $this->translateChild(...),
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'+' => $this->translateDirectAdjacent(...),
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'~' => $this->translateIndirectAdjacent(...),
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];
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}
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public function translateDescendant(XPathExpr $xpath, XPathExpr $combinedXpath): XPathExpr
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{
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return $xpath->join('/descendant-or-self::*/', $combinedXpath);
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}
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public function translateChild(XPathExpr $xpath, XPathExpr $combinedXpath): XPathExpr
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{
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return $xpath->join('/', $combinedXpath);
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}
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public function translateDirectAdjacent(XPathExpr $xpath, XPathExpr $combinedXpath): XPathExpr
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{
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return $xpath
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->join('/following-sibling::', $combinedXpath)
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->addNameTest()
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->addCondition('position() = 1');
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}
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public function translateIndirectAdjacent(XPathExpr $xpath, XPathExpr $combinedXpath): XPathExpr
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{
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return $xpath->join('/following-sibling::', $combinedXpath);
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}
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public function getName(): string
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{
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return 'combination';
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}
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}
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