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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0

#ifndef INCLUDE_H
#define INCLUDE_H

#include <QtCore/QtCompare>
#include <QtCore/QHashFunctions>
#include <QtCore/QString>
#include <QtCore/QList>

QT_BEGIN_NAMESPACE
class QTextStream;
QT_END_NAMESPACE

class TextStream;

class Include
{
public:
    enum IncludeType {
        IncludePath,
        LocalPath,
        TargetLangImport
    };

    Include() = default;
    Include(IncludeType t, const QString &nam) : m_type(t), m_name(nam) {};

    bool isValid() const
    {
        return !m_name.isEmpty();
    }

    IncludeType type() const
    {
        return m_type;
    }

    QString name() const
    {
        return m_name;
    }

    QString toString() const;

    int compare(const Include &rhs) const;

private:
    friend size_t qHash(Include &inc, size_t seed = 0) noexcept
    {
        return qHashMulti(seed, inc.m_type, inc.m_name);
    }
    friend bool comparesEqual(const Include &lhs, const Include  &rhs) noexcept
    {
        return lhs.m_type == rhs.m_type && lhs.m_name == rhs.m_name;
    }
    friend Qt::strong_ordering compareThreeWay(const Include &lhs,
                                               const Include &rhs) noexcept;
    Q_DECLARE_STRONGLY_ORDERED(Include)

    IncludeType m_type = IncludePath;
    QString m_name;
};

QTextStream& operator<<(QTextStream& out, const Include& include);
TextStream& operator<<(TextStream& out, const Include& include);
#ifndef QT_NO_DEBUG_STREAM
QDebug operator<<(QDebug d, const Include &i);
#endif

using IncludeList = QList<Include>;

struct IncludeGroup
{
    QString title;
    IncludeList includes;

    void append(const Include &include)
    {
        IncludeGroup::appendInclude(include, &includes);
    }

    static void appendInclude(const Include &include, IncludeList *list)
    {
        if (include.isValid() && !list->contains(include))
            list->append(include);
    }
};

TextStream& operator<<(TextStream &out, const IncludeGroup& include);

using IncludeGroupList = QList<IncludeGroup>;

#endif