[Experimental] CSSSerializer Proof-of-concept

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

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 54 matching lines @@
     CalcOther
 };
 
 class CSSCalcExpressionNode : public RefCountedWillBeGarbageCollected<CSSCalcExpressionNode> {
     DECLARE_EMPTY_VIRTUAL_DESTRUCTOR_WILL_BE_REMOVED(CSSCalcExpressionNode);
 public:
     enum Type {
         CssCalcPrimitiveValue = 1,
         CssCalcBinaryOperation
     };
+    static PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> deserialize(CSSDeserializeStream*);
 
     virtual bool isZero() const = 0;
     virtual double doubleValue() const = 0;
     virtual double computeLengthPx(const CSSToLengthConversionData&) const = 0;
     virtual void accumulateLengthArray(CSSLengthArray&, CSSLengthTypeArray&, double multiplier) const = 0;
     virtual void accumulatePixelsAndPercent(const CSSToLengthConversionData&, PixelsAndPercent&, float multiplier = 1) const = 0;
     virtual String customCSSText() const = 0;
     virtual bool equals(const CSSCalcExpressionNode& other) const { return m_category == other.m_category && m_isInteger == other.m_isInteger; }
     virtual Type type() const = 0;
 
     CalculationCategory category() const { return m_category; }
     virtual CSSPrimitiveValue::UnitType typeWithCalcResolved() const = 0;
     bool isInteger() const { return m_isInteger; }
 
+    virtual void serialize(CSSSerializeStream*) const;
     DEFINE_INLINE_VIRTUAL_TRACE() { }
 
 protected:
     CSSCalcExpressionNode(CalculationCategory category, bool isInteger)
         : m_category(category)
         , m_isInteger(isInteger)
     {
         ASSERT(category != CalcOther);
     }
 
     CalculationCategory m_category;
     bool m_isInteger;
 };
 
 class CORE_EXPORT CSSCalcValue : public RefCountedWillBeGarbageCollected<CSSCalcValue> {
 public:
     static PassRefPtrWillBeRawPtr<CSSCalcValue> create(const CSSParserTokenRange&, ValueRange);
     static PassRefPtrWillBeRawPtr<CSSCalcValue> create(PassRefPtrWillBeRawPtr<CSSCalcExpressionNode>, ValueRange = ValueRangeAll);
+    static PassRefPtrWillBeRawPtr<CSSCalcValue> deserialize(CSSDeserializeStream*);
 
     static PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> createExpressionNode(PassRefPtrWillBeRawPtr<CSSPrimitiveValue>, bool isInteger = false);
     static PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> createExpressionNode(PassRefPtrWillBeRawPtr<CSSCalcExpressionNode>, PassRefPtrWillBeRawPtr<CSSCalcExpressionNode>, CalcOperator);
     static PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> createExpressionNode(double pixels, double percent);
 
     PassRefPtr<CalculationValue> toCalcValue(const CSSToLengthConversionData& conversionData) const
     {
         PixelsAndPercent value(0, 0);
         m_expression->accumulatePixelsAndPercent(conversionData, value);
         return CalculationValue::create(value, m_nonNegative ? ValueRangeNonNegative : ValueRangeAll);
     }
     CalculationCategory category() const { return m_expression->category(); }
     bool isInt() const { return m_expression->isInteger(); }
     double doubleValue() const;
     bool isNegative() const { return m_expression->doubleValue() < 0; }
     ValueRange permittedValueRange() { return m_nonNegative ? ValueRangeNonNegative : ValueRangeAll; }
     double computeLengthPx(const CSSToLengthConversionData&) const;
     void accumulateLengthArray(CSSLengthArray& lengthArray, CSSLengthTypeArray& lengthTypeArray, double multiplier) const { m_expression->accumulateLengthArray(lengthArray, lengthTypeArray, multiplier); }
     CSSCalcExpressionNode* expressionNode() const { return m_expression.get(); }
 
     String customCSSText() const;
     bool equals(const CSSCalcValue&) const;
 
+    void serialize(CSSSerializeStream* stream) const;
+
     DEFINE_INLINE_TRACE()
     {
         visitor->trace(m_expression);
     }
 
 private:
     CSSCalcValue(PassRefPtrWillBeRawPtr<CSSCalcExpressionNode> expression, ValueRange range)
         : m_expression(expression)
         , m_nonNegative(range == ValueRangeNonNegative)
     {
     }
 
     double clampToPermittedRange(double) const;
 
     const RefPtrWillBeMember<CSSCalcExpressionNode> m_expression;
     const bool m_nonNegative;
 };
 
 } // namespace blink
 
 #endif // CSSCalculationValue_h