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**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
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** accordance with the commercial license agreement provided with the
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
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#pragma once

#include "clangsupport_global.h"

#include <utf8string.h>

#include <QDataStream>
#include <QVector>

namespace ClangBackEnd {

class CodeCompletionChunk;
using CodeCompletionChunks = QVector<CodeCompletionChunk>;

class CodeCompletionChunk
{
public:
    enum Kind : quint8 {
        Optional,
        TypedText,
        Text,
        Placeholder,
        Informative,
        CurrentParameter,
        LeftParen,
        RightParen,
        LeftBracket,
        RightBracket,
        LeftBrace,
        RightBrace,
        LeftAngle,
        RightAngle,
        Comma,
        ResultType,
        Colon,
        SemiColon,
        Equal,
        HorizontalSpace,
        VerticalSpace,
        Invalid = 255
    };

    CodeCompletionChunk() = default;
    CodeCompletionChunk(Kind kind,
                        const Utf8String &text,
                        bool isOptional = false)
        : m_text(text),
          m_kind(kind),
          m_isOptional(isOptional)
    {
    }

    Kind kind() const
    {
        return m_kind;
    }

    const Utf8String &text() const
    {
        return m_text;
    }

    bool isOptional() const
    {
        return m_isOptional;
    }

    friend QDataStream &operator<<(QDataStream &out, const CodeCompletionChunk &chunk)
    {
        out << static_cast<quint8>(chunk.m_kind);
        out << chunk.m_text;
        out << chunk.m_isOptional;

        return out;
    }

    friend QDataStream &operator>>(QDataStream &in, CodeCompletionChunk &chunk)
    {
        quint8 kind;

        in >> kind;
        in >> chunk.m_text;
        in >> chunk.m_isOptional;

        chunk.m_kind = static_cast<CodeCompletionChunk::Kind>(kind);

        return in;
    }

    friend bool operator==(const CodeCompletionChunk &first, const CodeCompletionChunk &second)
    {
        return first.kind() == second.kind()
                && first.text() == second.text()
                && first.isOptional() == second.isOptional();
    }

private:
    Utf8String m_text;
    Kind m_kind = Invalid;
    bool m_isOptional = false;
};

CLANGSUPPORT_EXPORT QDebug operator<<(QDebug debug, const CodeCompletionChunk &chunk);

std::ostream &operator<<(std::ostream &os, const CodeCompletionChunk::Kind &kind);

} // namespace ClangBackEnd
