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/*
* Copyright (C) 2011, 2012 Google Inc. All rights reserved.
* Copyright (C) 2021 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "CalculationCategory.h"
#include <wtf/Forward.h>
#include <wtf/Ref.h>
#include <wtf/RefCounted.h>
namespace WebCore {
class CSSToLengthConversionData;
class CalcExpressionNode;
struct ComputedStyleDependencies;
enum CSSPropertyID : uint16_t;
enum class CSSUnitType : uint8_t;
class CSSCalcExpressionNode : public RefCounted<CSSCalcExpressionNode> {
public:
enum Type {
CssCalcPrimitiveValue = 1,
CssCalcOperation,
CssCalcNegate,
CssCalcInvert,
};
virtual ~CSSCalcExpressionNode() = default;
virtual bool isZero() const = 0;
virtual std::unique_ptr<CalcExpressionNode> createCalcExpression(const CSSToLengthConversionData&) const = 0;
virtual double doubleValue(CSSUnitType) const = 0;
virtual double computeLengthPx(const CSSToLengthConversionData&) const = 0;
virtual bool equals(const CSSCalcExpressionNode& other) const { return m_category == other.m_category; }
virtual Type type() const = 0;
virtual CSSUnitType primitiveType() const = 0;
virtual void collectComputedStyleDependencies(ComputedStyleDependencies&) const = 0;
virtual bool convertingToLengthRequiresNonNullStyle(int lengthConversion) const = 0;
CalculationCategory category() const { return m_category; }
virtual void dump(TextStream&) const = 0;
protected:
CSSCalcExpressionNode(CalculationCategory category)
: m_category(category)
{
}
private:
CalculationCategory m_category;
};
TextStream& operator<<(TextStream&, const CSSCalcExpressionNode&);
#if !LOG_DISABLED
String prettyPrintNode(const CSSCalcExpressionNode&);
String prettyPrintNodes(const Vector<Ref<CSSCalcExpressionNode>>&);
#endif
}
#define SPECIALIZE_TYPE_TRAITS_CSSCALCEXPRESSION_NODE(ToValueTypeName, predicate) \
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::ToValueTypeName) \
static bool isType(const WebCore::CSSCalcExpressionNode& node) { return node.predicate; } \
SPECIALIZE_TYPE_TRAITS_END()
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