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Wikimedia\CSS\Grammar\DelimMatcher
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 __construct
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<?php
/**
 * @file
 * @license https://opensource.org/licenses/Apache-2.0 Apache-2.0
 */
namespace Wikimedia\CSS\Grammar;
use Wikimedia\CSS\Objects\ComponentValueList;
use Wikimedia\CSS\Objects\Token;
/**
 * Matcher that matches one of a set of values.
 *
 * This is intended for matching specific <delim-token>s, but will work for
 * other types (case-sensitively) too. For the more common case-insensitive
 * identifier matching, use KeywordMatcher.
 *
 * @see https://www.w3.org/TR/2016/CR-css-values-3-20160929/#component-types
 */
class DelimMatcher extends Matcher {
    /** @var string One of the Token::T_* constants */
    protected $type;
    /** @var string[] Values to match */
    protected $values;
    /**
     * @param string|string[] $values Token values to match
     * @param array $options Options
     *  - type: (string) Token type to match. Default is Token::T_DELIM.
     */
    public function __construct( $values, array $options = [] ) {
        $options += [
            'type' => Token::T_DELIM,
        ];
        $this->values = array_map( 'strval', (array)$values );
        $this->type = $options['type'];
    }
    /** @inheritDoc */
    protected function generateMatches( ComponentValueList $values, $start, array $options ) {
        $cv = $values[$start] ?? null;
        if ( $cv instanceof Token && $cv->type() === $this->type &&
            in_array( $cv->value(), $this->values, true )
        ) {
            yield $this->makeMatch( $values, $start, $this->next( $values, $start, $options ) );
        }
    }
}