Source/WebCore/Modules/WebGPU/GPUOrigin2DDict.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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 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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 * 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 "GPUIntegralTypes.h"
#include <pal/graphics/WebGPU/WebGPUOrigin2D.h>
#include <variant>
#include <wtf/Vector.h>

namespace WebCore {

struct GPUOrigin2DDict {
    PAL::WebGPU::Origin2DDict convertToBacking() const
    {
        return {
            x,
            y,
        };
    }

    GPUIntegerCoordinate x { 0 };
    GPUIntegerCoordinate y { 0 };
};

using GPUOrigin2D = std::variant<Vector<GPUIntegerCoordinate>, GPUOrigin2DDict>;

inline PAL::WebGPU::Origin2D convertToBacking(const GPUOrigin2D& origin2D)
{
    return WTF::switchOn(origin2D, [] (const Vector<GPUIntegerCoordinate>& vector) -> PAL::WebGPU::Origin2D {
        return vector;
    }, [] (const GPUOrigin2DDict& origin2D) -> PAL::WebGPU::Origin2D {
        return origin2D.convertToBacking();
    });
}

}