metapropertyt.h

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#ifndef LL_METAPROPERTYT_H
#define LL_METAPROPERTYT_H

#include "llsd.h"
#include "llstring.h"
#include "metaclasst.h"
#include "metaproperty.h"
#include "reflectivet.h"

template<class TProperty>
class LLMetaPropertyT : public LLMetaProperty
{
public:
        
        virtual ~LLMetaPropertyT() {;}
        
        // Get value of this property. Gives ownership of returned value.
        virtual const LLReflective* get(const LLReflective* object) const
        {
                checkObjectClass(object);
                return getProperty(object);
        }
  
        // Set value of this property.
        /*virtual void set(LLReflective* object, const LLReflective* value)
        {
                // TODO: Babbage: Check types.
                ref(object) = static_cast<const LLReflectiveT<TProperty>* >(value)->getValue();
        }*/
        
        // Get value of this property as LLSD.
        virtual LLSD getLLSD(const LLReflective* object) const
        {
                return LLSD();
        }

protected:

        LLMetaPropertyT(const std::string& name, const LLMetaClass& object_class) : LLMetaProperty(name, object_class) {;}

        virtual const TProperty* getProperty(const LLReflective* object) const = 0;
};

template <>
inline const LLReflective* LLMetaPropertyT<S32>::get(const LLReflective* object) const
{
        checkObjectClass(object);
        return NULL;
}

template <>
inline const LLReflective* LLMetaPropertyT<std::string>::get(const LLReflective* object) const
{
        checkObjectClass(object);
        return NULL;
}

template <>
inline const LLReflective* LLMetaPropertyT<LLString>::get(const LLReflective* object) const
{
        checkObjectClass(object);
        return NULL;
}

template <>
inline const LLReflective* LLMetaPropertyT<LLUUID>::get(const LLReflective* object) const
{
        checkObjectClass(object);
        return NULL;
}

template <>
inline LLSD LLMetaPropertyT<S32>::getLLSD(const LLReflective* object) const
{
        return *(getProperty(object));
}

template <>
inline LLSD LLMetaPropertyT<std::string>::getLLSD(const LLReflective* object) const
{
        return *(getProperty(object));
}

template <>
inline LLSD LLMetaPropertyT<LLString>::getLLSD(const LLReflective* object) const
{
        return *(getProperty(object));
}

template <>
inline LLSD LLMetaPropertyT<LLUUID>::getLLSD(const LLReflective* object) const
{
        return *(getProperty(object));
}

template<class TObject, class TProperty>
class LLMetaPropertyTT : public LLMetaPropertyT<TProperty>
{
public:

        LLMetaPropertyTT(const std::string& name, const LLMetaClass& object_class, TProperty (TObject::*property)) : 
          LLMetaPropertyT<TProperty>(name, object_class), mProperty(property) {;}

protected:

        // Get void* to property.
        virtual const TProperty* getProperty(const LLReflective* object) const
        {
                const TObject* typed_object = static_cast<const TObject*>(object);
                return &(typed_object->*mProperty);
        };

private:

        TProperty (TObject::*mProperty);
};

template<class TObject, class TProperty>
class LLMetaPropertyPtrTT : public LLMetaPropertyT<TProperty>
{
public:

        LLMetaPropertyPtrTT(const std::string& name, const LLMetaClass& object_class, TProperty* (TObject::*property)) : 
          LLMetaPropertyT<TProperty>(name, object_class), mProperty(property) {;}

protected:

        // Get void* to property.
        virtual const TProperty* getProperty(const LLReflective* object) const
        {
                const TObject* typed_object = static_cast<const TObject*>(object);
                return typed_object->*mProperty;
        };

private:

        TProperty* (TObject::*mProperty);
};

// Utility function to simplify the registration of members.
template<class TObject, class TProperty>
void reflectProperty(LLMetaClass& meta_class, const std::string& name, TProperty (TObject::*property))
{
        typedef LLMetaPropertyTT<TObject, TProperty> PropertyType;
        const LLMetaProperty* meta_property = new PropertyType(name, meta_class, property);
        meta_class.addProperty(meta_property);
}

// Utility function to simplify the registration of ptr properties.
template<class TObject, class TProperty>
void reflectPtrProperty(LLMetaClass& meta_class, const std::string& name, TProperty* (TObject::*property))
{
        typedef LLMetaPropertyPtrTT<TObject, TProperty> PropertyType;
        const LLMetaProperty* meta_property = new PropertyType(name, meta_class, property);
        meta_class.addProperty(meta_property);
}

#endif // LL_METAPROPERTYT_H

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