/*
 * 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
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 * 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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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#include "CalcExpressionNode.h"
#include <wtf/TypeCasts.h>

namespace WebCore {

class CalcExpressionNegation final : public CalcExpressionNode {
public:
    CalcExpressionNegation(std::unique_ptr<CalcExpressionNode>&& node)
        : CalcExpressionNode(CalcExpressionNodeType::Negation)
        , m_child(WTFMove(node))
    {
        ASSERT(m_child);
    }
    
    const CalcExpressionNode* child() const { return m_child.get(); }

private:
    float evaluate(float maxValue) const final;
    bool operator==(const CalcExpressionNode&) const final;
    void dump(TextStream&) const final;

    std::unique_ptr<CalcExpressionNode> m_child;
};

bool operator==(const CalcExpressionNegation&, const CalcExpressionNegation&);

}

SPECIALIZE_TYPE_TRAITS_CALCEXPRESSION_NODE(CalcExpressionNegation, type() == WebCore::CalcExpressionNodeType::Negation)