MDL-65759 library: Update php-css-parser to 8.3.0

lib/php-css-parser/Rule/Rule.php

@@ -2,10 +2,11 @@
 
 namespace Sabberworm\CSS\Rule;
 
+use Sabberworm\CSS\Comment\Commentable;
+use Sabberworm\CSS\Parsing\ParserState;
 use Sabberworm\CSS\Renderable;
 use Sabberworm\CSS\Value\RuleValueList;
 use Sabberworm\CSS\Value\Value;
-use Sabberworm\CSS\Comment\Commentable;
 
 /**
  * RuleSets contains Rule objects which always have a key and a value.
@@ -29,6 +30,44 @@ class Rule implements Renderable, Commentable {
 		$this->aComments = array();
 	}
 
+	public static function parse(ParserState $oParserState) {
+		$aComments = $oParserState->consumeWhiteSpace();
+		$oRule = new Rule($oParserState->parseIdentifier(), $oParserState->currentLine());
+		$oRule->setComments($aComments);
+		$oRule->addComments($oParserState->consumeWhiteSpace());
+		$oParserState->consume(':');
+		$oValue = Value::parseValue($oParserState, self::listDelimiterForRule($oRule->getRule()));
+		$oRule->setValue($oValue);
+		if ($oParserState->getSettings()->bLenientParsing) {
+			while ($oParserState->comes('\\')) {
+				$oParserState->consume('\\');
+				$oRule->addIeHack($oParserState->consume());
+				$oParserState->consumeWhiteSpace();
+			}
+		}
+		$oParserState->consumeWhiteSpace();
+		if ($oParserState->comes('!')) {
+			$oParserState->consume('!');
+			$oParserState->consumeWhiteSpace();
+			$oParserState->consume('important');
+			$oRule->setIsImportant(true);
+		}
+		$oParserState->consumeWhiteSpace();
+		while ($oParserState->comes(';')) {
+			$oParserState->consume(';');
+		}
+		$oParserState->consumeWhiteSpace();
+
+		return $oRule;
+	}
+
+	private static function listDelimiterForRule($sRule) {
+		if (preg_match('/^font($|-)/', $sRule)) {
+			return array(',', '/', ' ');
+		}
+		return array(',', ' ', '/');
+	}
+
 	/**
 	 * @return int
 	 */