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
{
    namespace 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::typeName(getMetaTypeId());
        }
 
        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;
        }
 
        // *INDENT-OFF*
#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;
        // *INDENT-ON*
 
    } // namespace mixin
} // namespace swift::misc
 
#endif // SWIFT_MISC_MIXIN_MIXINMETATYPE_H