Source/WebKit/Shared/ios/WebAutocorrectionContext.h

/*
 * Copyright (C) 2019 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

#include "Decoder.h"
#include "EditingRange.h"
#include "Encoder.h"
#include <wtf/text/WTFString.h>

namespace WebKit {

struct WebAutocorrectionContext {
    String contextBefore;
    String markedText;
    String selectedText;
    String contextAfter;
    EditingRange markedTextRange;

    template<class Encoder> void encode(Encoder&) const;
    template<class Decoder> static std::optional<WebAutocorrectionContext> decode(Decoder&);
};

template<class Encoder> void WebAutocorrectionContext::encode(Encoder& encoder) const
{
    encoder << contextBefore;
    encoder << markedText;
    encoder << selectedText;
    encoder << contextAfter;
    encoder << markedTextRange;
}

template<class Decoder> std::optional<WebAutocorrectionContext> WebAutocorrectionContext::decode(Decoder& decoder)
{
    WebAutocorrectionContext correction;
    if (!decoder.decode(correction.contextBefore))
        return std::nullopt;
    if (!decoder.decode(correction.markedText))
        return std::nullopt;
    if (!decoder.decode(correction.selectedText))
        return std::nullopt;
    if (!decoder.decode(correction.contextAfter))
        return std::nullopt;
    if (!decoder.decode(correction.markedTextRange))
        return std::nullopt;
    return correction;
}

} // namespace WebKit