Source/WebCore/css/calc/CSSCalcValue.h

/*
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#pragma once

#include "CSSValue.h"
#include "CSSValueKeywords.h"
#include "CalculationValue.h"
#include <wtf/Forward.h>
#include <wtf/Ref.h>

namespace WebCore {

class CSSCalcExpressionNode;
class CSSCalcSymbolTable;
class CSSParserTokenRange;
class CSSToLengthConversionData;
class RenderStyle;

enum class CSSUnitType : uint8_t;
enum class CalculationCategory : uint8_t;
enum class ValueRange : uint8_t;

class CSSCalcValue final : public CSSValue {
public:
    static RefPtr<CSSCalcValue> create(CSSValueID function, const CSSParserTokenRange&, CalculationCategory destinationCategory, ValueRange, const CSSCalcSymbolTable&);
    static RefPtr<CSSCalcValue> create(CSSValueID function, const CSSParserTokenRange&, CalculationCategory destinationCategory, ValueRange);
    static RefPtr<CSSCalcValue> create(const CalculationValue&, const RenderStyle&);
    ~CSSCalcValue();

    CalculationCategory category() const;
    double doubleValue() const;
    double computeLengthPx(const CSSToLengthConversionData&) const;
    CSSUnitType primitiveType() const;

    Ref<CalculationValue> createCalculationValue(const CSSToLengthConversionData&) const;
    void setPermittedValueRange(ValueRange);

    void collectDirectComputationalDependencies(HashSet<CSSPropertyID>&) const;
    void collectDirectRootComputationalDependencies(HashSet<CSSPropertyID>&) const;

    String customCSSText() const;
    bool equals(const CSSCalcValue&) const;
    
    static bool isCalcFunction(CSSValueID);

    void dump(TextStream&) const;

private:
    CSSCalcValue(Ref<CSSCalcExpressionNode>&&, bool shouldClampToNonNegative);

    double clampToPermittedRange(double) const;

    const Ref<CSSCalcExpressionNode> m_expression;
    bool m_shouldClampToNonNegative;
};

TextStream& operator<<(TextStream&, const CSSCalcValue&);

} // namespace WebCore

SPECIALIZE_TYPE_TRAITS_CSS_VALUE(CSSCalcValue, isCalcValue())