Source/WebCore/platform/calc/CalcExpressionNegation.cpp

/*
 * 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
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 */

#include "config.h"
#include "CalcExpressionNegation.h"

#include <wtf/text/TextStream.h>

namespace WebCore {

float CalcExpressionNegation::evaluate(float maxValue) const
{
    return -m_child->evaluate(maxValue);
}

bool CalcExpressionNegation::operator==(const CalcExpressionNode& other) const
{
    return is<CalcExpressionNegation>(other) && *this == downcast<CalcExpressionNegation>(other);
}

void CalcExpressionNegation::dump(TextStream& ts) const
{
    ts << "-(" << *m_child << ")";
}

bool operator==(const CalcExpressionNegation& a, const CalcExpressionNegation& b)
{
    return *a.child() == *b.child();
}

}