84 lines
2 KiB
PHP
84 lines
2 KiB
PHP
<?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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/**
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* {@inheritdoc}
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*/
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public function getCombinationTranslators()
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{
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return array(
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' ' => array($this, 'translateDescendant'),
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'>' => array($this, 'translateChild'),
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'+' => array($this, 'translateDirectAdjacent'),
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'~' => array($this, 'translateIndirectAdjacent'),
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);
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}
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/**
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* @return XPathExpr
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*/
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public function translateDescendant(XPathExpr $xpath, XPathExpr $combinedXpath)
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{
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return $xpath->join('/descendant-or-self::*/', $combinedXpath);
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}
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/**
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* @return XPathExpr
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*/
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public function translateChild(XPathExpr $xpath, XPathExpr $combinedXpath)
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{
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return $xpath->join('/', $combinedXpath);
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}
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/**
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* @return XPathExpr
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*/
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public function translateDirectAdjacent(XPathExpr $xpath, XPathExpr $combinedXpath)
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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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/**
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* @return XPathExpr
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*/
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public function translateIndirectAdjacent(XPathExpr $xpath, XPathExpr $combinedXpath)
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{
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return $xpath->join('/following-sibling::', $combinedXpath);
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}
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/**
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* {@inheritdoc}
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*/
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public function getName()
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{
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return 'combination';
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}
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}
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