Source/WebCore/css/calc/CSSCalcNegateNode.h

/*
 * 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
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 * 1. Redistributions of source code must retain the above copyright
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *
 * 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
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#pragma once

#include "CSSCalcExpressionNode.h"

namespace WebCore {

class CSSCalcNegateNode final : public CSSCalcExpressionNode {
public:
    static Ref<CSSCalcNegateNode> create(Ref<CSSCalcExpressionNode>&& child)
    {
        return adoptRef(*new CSSCalcNegateNode(WTFMove(child)));
    }

    const CSSCalcExpressionNode& child() const { return m_child.get(); }
    CSSCalcExpressionNode& child() { return m_child.get(); }

    void setChild(Ref<CSSCalcExpressionNode>&& child) { m_child = WTFMove(child); }

private:
    CSSCalcNegateNode(Ref<CSSCalcExpressionNode>&& child)
        : CSSCalcExpressionNode(child->category())
        , m_child(WTFMove(child))
    {
    }

    std::unique_ptr<CalcExpressionNode> createCalcExpression(const CSSToLengthConversionData&) const final;

    bool isZero() const final { return m_child->isZero(); }
    double doubleValue(CSSUnitType unitType) const final { return -m_child->doubleValue(unitType); }
    double computeLengthPx(const CSSToLengthConversionData& conversionData) const final { return -m_child->computeLengthPx(conversionData); }
    Type type() const final { return Type::CssCalcNegate; }
    CSSUnitType primitiveType() const final { return m_child->primitiveType(); }

    void collectDirectComputationalDependencies(HashSet<CSSPropertyID>& properties) const final { m_child->collectDirectComputationalDependencies(properties); }
    void collectDirectRootComputationalDependencies(HashSet<CSSPropertyID>& properties) const final { m_child->collectDirectRootComputationalDependencies(properties); }

    void dump(TextStream&) const final;

    Ref<CSSCalcExpressionNode> m_child;
};

}

SPECIALIZE_TYPE_TRAITS_CSSCALCEXPRESSION_NODE(CSSCalcNegateNode, type() == WebCore::CSSCalcExpressionNode::Type::CssCalcNegate)