startup_helper.h

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#ifndef STARTUPHELPER_H
#define STARTUPHELPER_H

#include <QMetaObject>
#include <QApplication>

#include "appcore.h"
#include "helper/singleton.h"
#include "helper/startup_helper_templates.h"

class StartupHelperPrivate;
 //Otherwise we won't see the marcos documented.

class ITEMFRAMEWORK_EXPORT StartupHelper
{
public:
    template<class T> static void addSingleton()
    {
        static_assert(std::is_base_of<Singleton<T>, T>::value, "Class is not derived from AbstractSingleton");
        static_assert(internal::HasMetaObject<T>::value, "Class has no Q_OBJECT or Q_GADGET macro");
        addSingletonHelper(T::staticMetaObject);
    }

    template<class T> static void addComponent()
    {
        static_assert(internal::HasMetaObject<T>::value, "Class has no Q_OBJECT or Q_GADGET macro");
        static_assert((internal::GetInitFnPtr<T>::value != nullptr || internal::GetDeinitFnPtr<T>::value != nullptr),
                      "Class has neither an init() nor a deinit() function");
        addComponentHelper(T::staticMetaObject, internal::GetInitFnPtr<T>::value, internal::GetDeinitFnPtr<T>::value);
    }

    static void ensureCoreGetsLinked();

private:
    static void addSingletonHelper(const QMetaObject& metaobj);
    static void addComponentHelper(const QMetaObject& metaobj, internal::VoidFnPtr initFunc, internal::VoidFnPtr deinitFunc);
};



#define STARTUP_ADD_SINGLETON(type) \
static void startup_singleton_##type() { \
   StartupHelper::addSingleton<type>(); \
} \
Q_COREAPP_STARTUP_FUNCTION(startup_singleton_##type)

#define STARTUP_ADD_COMPONENT(type) \
static void startup_component_##type() { \
   StartupHelper::addComponent<type>(); \
} \
Q_COREAPP_STARTUP_FUNCTION(startup_component_##type)



#endif // STARTUP_HELPER_H