CSS Custom Properties (Variables)

Source/core/css/parser/CSSVariableParser.h

+// Copyright 2015 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 CSSVariableParser_h
+#define CSSVariableParser_h
+
+#include "core/CSSValueKeywords.h"
+#include "core/css/CSSPrimitiveValue.h"
+#include "core/css/CSSSelector.h"
+#include "core/css/CSSValueList.h"
+#include "wtf/text/AtomicString.h"
+#include "wtf/text/WTFString.h"
+
+namespace blink {
+
+class CSSParserTokenRange;
+
+class CSSVariableParser {
+public:
+    enum DefinitionType {
+        Invalid,
+        Variable,
+        VariableWithReferences,
+        Initial,
+        Inherit,
+        Unset,
+    };
+    static bool containsValidVariableReferences(const CSSParserTokenRange&);
+
+    static DefinitionType parseVariableDefinition(CSSParserTokenRange&);
+};
+
+} // namespace blink
+
+#endif // CSSVariableParser_h