Unicode range

lib/Sabberworm/CSS/Value/Value.php

@@ -92,6 +92,8 @@ public static function parsePrimitiveValue(ParserState $oParserState) {
 			$oValue = self::parseMicrosoftFilter($oParserState);
 		} else if ($oParserState->comes("[")) {
 			$oValue = LineName::parse($oParserState);
+		} else if ($oParserState->comes("U+")) {
+			$oValue = self::parseUnicodeRangeValue($oParserState);
 		} else {
 			$oValue = self::parseIdentifierOrFunction($oParserState);
 		}
@@ -104,6 +106,17 @@ private static function parseMicrosoftFilter(ParserState $oParserState) {
 		$aArguments = Value::parseValue($oParserState, array(',', '='));
 		return new CSSFunction($sFunction, $aArguments, ',', $oParserState->currentLine());
 	}
+
+	private static function parseUnicodeRangeValue(ParserState $oParserState) {
+		$iCodepointMaxLenth = 6; // Code points outside BMP can use up to six digits
+		$sRange = "";
+		$oParserState->consume("U+");
+		do {
+			if ($oParserState->comes('-')) $iCodepointMaxLenth = 13; // Max length is 2 six digit code points + the dash(-) between them
+			$sRange .= $oParserState->consume(1);
+		} while (strlen($sRange) < $iCodepointMaxLenth && preg_match("/[A-Fa-f0-9\?-]/", $oParserState->peek()));
+		return "U+{$sRange}";
+	}
 
 	/**
 	 * @return int

tests/Sabberworm/CSS/ParserTest.php

@@ -126,6 +126,12 @@ function testUnicodeParsing() {
 		}
 	}
 
+	function testUnicodeRangeParsing() {
+		$oDoc = $this->parsedStructureForFile('unicode-range');
+		$sExpected = "@font-face {unicode-range: U+0100-024F,U+0259,U+1E??-2EFF,U+202F;}";
+		$this->assertSame($sExpected, $oDoc->render());
+	}
+
 	function testSpecificity() {
 		$oDoc = $this->parsedStructureForFile('specificity');
 		$oDeclarationBlock = $oDoc->getAllDeclarationBlocks();

tests/files/unicode-range.css

@@ -0,0 +1,3 @@
+@font-face {
+  unicode-range: U+0100-024F, U+0259, U+1E??-2EFF, U+202F;
+}