Source/WebCore/css/calc/CSSCalcInvertNode.cpp

/*
 * Copyright (C) 2021 Apple Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *    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
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#include "config.h"
#include "CSSCalcInvertNode.h"

#include "CalcExpressionInversion.h"
#include <wtf/text/TextStream.h>

namespace WebCore {

std::unique_ptr<CalcExpressionNode> CSSCalcInvertNode::createCalcExpression(const CSSToLengthConversionData& conversionData) const
{
    auto childNode = m_child->createCalcExpression(conversionData);
    return makeUnique<CalcExpressionInversion>(WTFMove(childNode));
}

double CSSCalcInvertNode::doubleValue(CSSUnitType unitType) const
{
    auto childValue = m_child->doubleValue(unitType);
    if (!childValue)
        return std::numeric_limits<double>::infinity();
    return 1.0 / childValue;
}

double CSSCalcInvertNode::computeLengthPx(const CSSToLengthConversionData& conversionData) const
{
    auto childValue = m_child->computeLengthPx(conversionData);
    if (!childValue)
        return std::numeric_limits<double>::infinity();
    return 1.0 / childValue;
}

void CSSCalcInvertNode::dump(TextStream& ts) const
{
    ts << "1/" << m_child.get();
}


}