CSS Custom Properties (Variables)

third_party/WebKit/Source/core/css/CSSPrimitiveValue.h

Index: third_party/WebKit/Source/core/css/CSSPrimitiveValue.h
diff --git a/third_party/WebKit/Source/core/css/CSSPrimitiveValue.h b/third_party/WebKit/Source/core/css/CSSPrimitiveValue.h
index d7f09dfddd207632a66e45771608e08c0c27ad14..c419a3c261ef3962cf8ed3b51097c0a7359ebaae 100644
--- a/third_party/WebKit/Source/core/css/CSSPrimitiveValue.h
+++ b/third_party/WebKit/Source/core/css/CSSPrimitiveValue.h
@@ -38,6 +38,7 @@ namespace blink {
 class CSSBasicShape;
 class CSSCalcValue;
 class CSSToLengthConversionData;
+class CSSVariableData;
 class Length;
 class RGBColor;
 class ComputedStyle;
@@ -115,6 +116,7 @@ public:
         // inside a table cell. This quirk is specified in the HTML spec but our impl is different.
         // TODO: Remove this. crbug.com/443952
         QuirkyEms,
+        VariableReference,

[Timothy Loh, 2015/09/30 02:09:27]

I think we aren't adding any more random types to CSSPrimitiveValue (see
crbug.com/523893), so this should be a separate class too.

     };
 
     enum LengthUnitType {
@@ -190,6 +192,7 @@ public:
     bool isTime() const { return type() == UnitType::Seconds || type() == UnitType::Milliseconds; }
     bool isURI() const { return type() == UnitType::URI; }
     bool isCalculated() const { return type() == UnitType::Calc; }
+    bool isVariableReference() const { return type() == UnitType::VariableReference; }
     bool isCalculatedPercentageWithNumber() const { return typeWithCalcResolved() == UnitType::CalcPercentageWithNumber; }
     bool isCalculatedPercentageWithLength() const { return typeWithCalcResolved() == UnitType::CalcPercentageWithLength; }
     static bool isDotsPerInch(UnitType type) { return type == UnitType::DotsPerInch; }
@@ -256,6 +259,12 @@ public:
     CSSCalcValue* cssCalcValue() const { ASSERT(isCalculated()); return m_value.calc; }
     CSSPropertyID getPropertyID() const { ASSERT(isPropertyID()); return m_value.propertyID; }
 
+    CSSVariableData* getVariableDataValue() const
+    {
+        ASSERT(type() == UnitType::VariableReference);
+        return m_value.variableData;
+    }
+
     CSSValueID getValueID() const { return type() == UnitType::ValueID ? m_value.valueID : CSSValueInvalid; }
 
     template<typename T> inline operator T() const; // Defined in CSSPrimitiveValueMappings.h
@@ -303,6 +312,7 @@ private:
     void init(const Length&);
     void init(PassRefPtrWillBeRawPtr<CSSBasicShape>);
     void init(PassRefPtrWillBeRawPtr<CSSCalcValue>);
+    void init(PassRefPtrWillBeRawPtr<CSSVariableData>);
 
     double computeLengthDouble(const CSSToLengthConversionData&) const;
 
@@ -317,6 +327,7 @@ private:
         // FIXME: oilpan: Should be members, but no support for members in unions. Just trace the raw ptr for now.
         CSSBasicShape* shape;
         CSSCalcValue* calc;
+        CSSVariableData* variableData;
     } m_value;
 };