Code Coverage for /src/src/Grammar/Alternative.php

1	<?php
2	/**
3	* @file
4	* @license https://opensource.org/licenses/Apache-2.0 Apache-2.0
5	*/
6
7	namespace Wikimedia\CSS\Grammar;
8
9	use Wikimedia\CSS\Objects\ComponentValueList;
10	use Wikimedia\CSS\Util;
11
12	/**
13	* Matcher that matches one out of a set of Matchers ("\|" combiner).
14	* @see https://www.w3.org/TR/2019/CR-css-values-3-20190606/#comb-one
15	*/
16	class Alternative extends Matcher {
17	/** @var Matcher[] */
18	protected $matchers;
19
20	/**
21	* @param Matcher[] $matchers
22	*/
23	public function __construct( array $matchers ) {
24	Util::assertAllInstanceOf( $matchers, Matcher::class, '$matchers' );
25	$this->matchers = $matchers;
26	}
27
28	/** @inheritDoc */
29	protected function generateMatches( ComponentValueList $values, $start, array $options ) {
30	$used = [];
31	foreach ( $this->matchers as $matcher ) {
32	foreach ( $matcher->generateMatches( $values, $start, $options ) as $match ) {
33	$newMatch = $this->makeMatch( $values, $start, $match->getNext(), $match );
34	$mid = $newMatch->getUniqueID();
35	if ( !isset( $used[$mid] ) ) {
36	$used[$mid] = 1;
37	yield $newMatch;
38	}
39	}
40	}
41	}
42	}