Index: third_party/WebKit/Source/core/css/properties/CSSPropertyPositionUtils.h |
diff --git a/third_party/WebKit/Source/core/css/properties/CSSPropertyPositionUtils.h b/third_party/WebKit/Source/core/css/properties/CSSPropertyPositionUtils.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..354c059afcb7c6bb7d01f1fe1b436909b6a09562 |
--- /dev/null |
+++ b/third_party/WebKit/Source/core/css/properties/CSSPropertyPositionUtils.h |
@@ -0,0 +1,45 @@ |
+// Copyright 2017 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+#ifndef CSSPropertyPositionUtils_h |
+#define CSSPropertyPositionUtils_h |
+ |
+#include "core/CSSValueKeywords.h" |
+#include "core/css/parser/CSSParserMode.h" |
+ |
+#include "wtf/Allocator.h" |
+ |
+namespace blink { |
+ |
+class CSSParserTokenRange; |
+class CSSValue; |
+ |
+class CSSPropertyPositionUtils { |
+ STATIC_ONLY(CSSPropertyPositionUtils); |
+ |
+ template <CSSValueID start, CSSValueID end> |
+ static CSSValue* consumePositionLonghand(CSSParserTokenRange& range, |
+ CSSParserMode cssParserMode) { |
+ if (range.peek().type() == IdentToken) { |
+ CSSValueID id = range.peek().id(); |
+ int percent; |
+ if (id == start) |
+ percent = 0; |
+ else if (id == CSSValueCenter) |
+ percent = 50; |
+ else if (id == end) |
+ percent = 100; |
+ else |
+ return nullptr; |
+ range.consumeIncludingWhitespace(); |
+ return CSSPrimitiveValue::create(percent, |
+ CSSPrimitiveValue::UnitType::Percentage); |
+ } |
+ return CSSPropertyParserHelpers::consumeLengthOrPercent( |
+ range, cssParserMode, ValueRangeAll); |
+ } |
+}; |
+ |
+} // namespace blink |
+ |
+#endif // CSSPropertyPositionUtils_h |