[WIP] Add support for CSSValue-> CSSLengthValue and CSSTranslation

third_party/WebKit/Source/core/css/cssom/CSSCalcLength.h

 // Copyright 2016 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 CSSCalcLength_h
 #define CSSCalcLength_h
 
+#include "core/css/CSSCalculationValue.h"
 #include "core/css/cssom/CSSLengthValue.h"
 #include "wtf/BitVector.h"
 
 namespace blink {
 
 class CalcDictionary;
 class CSSSimpleLength;
+class CSSValue;
 
 class CORE_EXPORT CSSCalcLength final : public CSSLengthValue {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static CSSCalcLength* create(const CSSLengthValue*);
+    static CSSCalcLength* create(const CalcDictionary&);
     static CSSCalcLength* create(const CalcDictionary&, ExceptionState&);
     static CSSCalcLength* create(const CSSLengthValue* length, ExceptionState&)
     {
         return create(length);
     }
 
+    static CSSCalcLength* fromCSSValue(const CSSValue&);
+
 #define GETTER_MACRO(name, type) \
     double name(bool& isNull) \
     { \
         isNull = !hasAtIndex(indexForUnit(type)); \
         return get(type); \
     }
 
     GETTER_MACRO(px, CSSPrimitiveValue::UnitType::Pixels)
     GETTER_MACRO(percent, CSSPrimitiveValue::UnitType::Percentage)
     GETTER_MACRO(em, CSSPrimitiveValue::UnitType::Ems)
@@ skipping 13 matching lines @@
 #undef GETTER_MACRO
 
     bool containsPercent() const override;
 
     CSSValue* toCSSValue() const override;
 
     StyleValueType type() const override { return CalcLengthType; }
 protected:
     CSSLengthValue* addInternal(const CSSLengthValue* other, ExceptionState&) override;
     CSSLengthValue* subtractInternal(const CSSLengthValue* other, ExceptionState&) override;
-    CSSLengthValue* multiplyInternal(double, ExceptionState&) override;
-    CSSLengthValue* divideInternal(double, ExceptionState&) override;
+    CSSLengthValue* multiplyInternal(double) override;
+    CSSLengthValue* divideInternal(double) override;
 
 private:
     CSSCalcLength();
     CSSCalcLength(const CSSCalcLength& other);
     CSSCalcLength(const CSSSimpleLength& other);
 
+    static CSSCalcLength* populateCalcLengthFromExpressionNode(const CSSCalcExpressionNode*);    
+
     static int indexForUnit(CSSPrimitiveValue::UnitType);
     static CSSPrimitiveValue::UnitType unitFromIndex(int index)
     {
         DCHECK(index < CSSLengthValue::kNumSupportedUnits);
         int lowestValue = static_cast<int>(CSSPrimitiveValue::UnitType::Percentage);
         return static_cast<CSSPrimitiveValue::UnitType>(index + lowestValue);
     }
 
     bool hasAtIndex(int index) const
     {
@@ skipping 22 matching lines @@
 #define DEFINE_CALC_LENGTH_TYPE_CASTS(argumentType) \
     DEFINE_TYPE_CASTS(CSSCalcLength, argumentType, value, \
         value->type() == CSSLengthValue::StyleValueType::CalcLengthType, \
         value.type() == CSSLengthValue::StyleValueType::CalcLengthType)
 
 DEFINE_CALC_LENGTH_TYPE_CASTS(CSSStyleValue);
 
 } // namespace blink
 
 #endif