Source/WebCore/platform/cocoa/UTTypeRecordSwizzler.h

/*
 * Copyright (C) 2020 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
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#if USE(UTTYPE_SWIZZLER)

#include <wtf/text/WTFString.h>

namespace WebCore {

struct UTTypeItem {
    String tag;
    String tagClass;
    String identifier;
    String uti;

    template<class Encoder> void encode(Encoder&) const;
    template<class Decoder> static Optional<UTTypeItem> decode(Decoder&);
};

WEBCORE_EXPORT void swizzleUTTypeRecord();

WEBCORE_EXPORT const Vector<UTTypeItem>& createVectorOfUTTypeItem();
WEBCORE_EXPORT void setVectorOfUTTypeItem(Vector<UTTypeItem>&&);

template<class Encoder>
void UTTypeItem::encode(Encoder& encoder) const
{
    encoder << tag;
    encoder << tagClass;
    encoder << identifier;
    encoder << uti;
}

template<class Decoder>
Optional<UTTypeItem> UTTypeItem::decode(Decoder& decoder)
{
    Optional<String> tag;
    decoder >> tag;
    if (!tag)
        return WTF::nullopt;

    Optional<String> tagClass;
    decoder >> tagClass;
    if (!tagClass)
        return WTF::nullopt;

    Optional<String> identifier;
    decoder >> identifier;
    if (!identifier)
        return WTF::nullopt;

    Optional<String> uti;
    decoder >> uti;
    if (!uti)
        return WTF::nullopt;

    return UTTypeItem { *tag, *tagClass, *identifier, *uti };
}
};

#endif