/** * @file metapropertyt.h * * $LicenseInfo:firstyear=2006&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2010, Linden Research, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License only. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ #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<LLUUID>::get(const LLReflective* object) const { checkObjectClass(object); return NULL; } template <> inline const LLReflective* LLMetaPropertyT<bool>::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<LLUUID>::getLLSD(const LLReflective* object) const { return *(getProperty(object)); } template <> inline LLSD LLMetaPropertyT<bool>::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