NoWhitespace.php
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NoWhitespace.php
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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 asserts there was no whitespace before the current position.
	*/
	class NoWhitespace extends Matcher {

	/** @inheritDoc */
	protected function generateMatches( ComponentValueList $values, $start, array $options ) {
	$cv = $values[$start - 1] ?? null;
	if ( !$cv instanceof Token \|\| $cv->type() !== Token::T_WHITESPACE ) {
	yield $this->makeMatch( $values, $start, $start );
	}
	}
	}