mixinmetatype.h

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// SPDX-FileCopyrightText: Copyright (C) 2013 swift Project Community / Contributors
// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-swift-pilot-client-1
 
 
#ifndef SWIFT_MISC_MIXIN_MIXINMETATYPE_H
#define SWIFT_MISC_MIXIN_MIXINMETATYPE_H
 
#include <QMetaType>
#include <QString>
#include <QtGlobal>
 
#include "misc/inheritancetraits.h"
#include "misc/propertyindexref.h"
#include "misc/variant.h"
 
namespace swift::misc::mixin
{
    template <class Derived>
    class MetaType
    {
    public:
        static void registerMetadata();
 
        int getMetaTypeId() const;
 
        QString getClassName() const;
 
        bool isA(int metaTypeId) const;
 
    private:
        const Derived *derived() const;
        Derived *derived();
 
        template <typename Base2>
        static bool baseIsA(const Base2 *base, int metaTypeId);
        static bool baseIsA(const void *, int);
    };
 
    template <class Derived>
    void MetaType<Derived>::registerMetadata()
    {
        private_ns::MetaTypeHelper<Derived>::maybeRegisterMetaType();
    }
 
    template <class Derived>
    int MetaType<Derived>::getMetaTypeId() const
    {
        return private_ns::MetaTypeHelper<Derived>::maybeGetMetaTypeId();
    }
 
    template <class Derived>
    QString MetaType<Derived>::getClassName() const
    {
        return QMetaType(getMetaTypeId()).name();
    }
 
    template <class Derived>
    bool MetaType<Derived>::isA(int metaTypeId) const
    {
        if (metaTypeId == QMetaType::UnknownType) { return false; }
        if (metaTypeId == getMetaTypeId()) { return true; }
        return baseIsA(static_cast<const TMetaBaseOfT<Derived> *>(derived()), metaTypeId);
    }
 
    template <class Derived>
    const Derived *MetaType<Derived>::derived() const
    {
        return static_cast<const Derived *>(this);
    }
 
    template <class Derived>
    Derived *MetaType<Derived>::derived()
    {
        return static_cast<Derived *>(this);
    }
 
    template <class Derived>
    template <typename Base2>
    bool MetaType<Derived>::baseIsA(const Base2 *base, int metaTypeId)
    {
        return base->isA(metaTypeId);
    }
 
    template <class Derived>
    bool MetaType<Derived>::baseIsA(const void *, int)
    {
        return false;
    }
 
#define SWIFT_MISC_DECLARE_USING_MIXIN_METATYPE(DERIVED)                                                               \
    using ::swift::misc::mixin::MetaType<DERIVED>::registerMetadata;                                                   \
    using ::swift::misc::mixin::MetaType<DERIVED>::getMetaTypeId;                                                      \
    using ::swift::misc::mixin::MetaType<DERIVED>::getClassName;                                                       \
    using ::swift::misc::mixin::MetaType<DERIVED>::isA;
 
} // namespace swift::misc::mixin
 
#endif // SWIFT_MISC_MIXIN_MIXINMETATYPE_H