learnpress / vendor / symfony / css-selector / XPath / Extension / RelationExtension.php

RelationExtension.php in LearnPress – WordPress LMS Plugin for Create and Sell Online Courses 4.4.8, at vendor/symfony/css-selector/XPath/Extension/RelationExtension.php

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1	<?php
2
3	/*
4	* This file is part of the Symfony package.
5	*
6	* (c) Fabien Potencier <fabien@symfony.com>
7	*
8	* For the full copyright and license information, please view the LICENSE
9	* file that was distributed with this source code.
10	*/
11
12	namespace Symfony\Component\CssSelector\XPath\Extension;
13
14	use Symfony\Component\CssSelector\XPath\XPathExpr;
15
16	/**
17	* XPath expression translator combination extension.
18	*
19	* This component is a port of the Python cssselect library,
20	* which is copyright Ian Bicking, @see https://github.com/scrapy/cssselect.
21	*
22	* @author Franck Ranaivo-Harisoa <franckranaivo@gmail.com>
23	*
24	* @internal
25	*/
26	class RelationExtension extends AbstractExtension
27	{
28	public function getRelativeCombinationTranslators(): array
29	{
30	return [
31	' ' => $this->translateRelationDescendant(...),
32	'>' => $this->translateRelationChild(...),
33	'+' => $this->translateRelationDirectAdjacent(...),
34	'~' => $this->translateRelationIndirectAdjacent(...),
35	];
36	}
37
38	public function translateRelationDescendant(XPathExpr $xpath, XPathExpr $combinedXpath): XPathExpr
39	{
40	return $xpath->join('[descendant-or-self::', $combinedXpath, ']', true);
41	}
42
43	public function translateRelationChild(XPathExpr $xpath, XPathExpr $combinedXpath): XPathExpr
44	{
45	return $xpath->join('[./', $combinedXpath, ']', true);
46	}
47
48	public function translateRelationDirectAdjacent(XPathExpr $xpath, XPathExpr $combinedXpath): XPathExpr
49	{
50	// position() = 1 must apply to the sibling, not the outer element, so it goes on $combinedXpath before the join
51	$combinedXpath
52	->addNameTest()
53	->addCondition('position() = 1');
54
55	return $xpath
56	->join('[following-sibling::', $combinedXpath, ']', true);
57	}
58
59	public function translateRelationIndirectAdjacent(XPathExpr $xpath, XPathExpr $combinedXpath): XPathExpr
60	{
61	return $xpath->join('[following-sibling::', $combinedXpath, ']', true);
62	}
63
64	public function getName(): string
65	{
66	return 'relation';
67	}
68	}
69