MyGUI_RTTI.h

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/*
 * This source file is part of MyGUI. For the latest info, see http://mygui.info/
 * Distributed under the MIT License
 * (See accompanying file COPYING.MIT or copy at http://opensource.org/licenses/MIT)
 */

#ifndef __MYGUI_RTTI_H__
#define __MYGUI_RTTI_H__

#include "MyGUI_Prerequest.h"
#include "MyGUI_Diagnostic.h"
#include <string>

#include <typeinfo>

namespace MyGUI
{
#define MYGUI_RTTI_TYPE const std::type_info&
#define MYGUI_RTTI_GET_TYPE(type) typeid(type)

    //VC++ 7.1
#if MYGUI_COMPILER == MYGUI_COMPILER_MSVC && MYGUI_COMP_VER <= 1310
#   define MYGUI_DECLARE_TYPE_NAME(Type) \
        private: \
            struct TypeNameHolder { const std::string& getClassTypeName() { static std::string type = #Type; return type; } }; \
        public: \
            static const std::string& getClassTypeName() { TypeNameHolder type; return type.getClassTypeName(); } \
 \
            virtual const std::string& getTypeName() const { return getClassTypeName(); }
#else
#   define MYGUI_DECLARE_TYPE_NAME(Type) \
        public: \
            static const std::string& getClassTypeName() { static std::string type = #Type; return type; } \
 \
            virtual const std::string& getTypeName() const { return getClassTypeName(); }
#endif

#define MYGUI_RTTI_BASE(BaseType) \
        public: \
            typedef BaseType RTTIBase; \
            MYGUI_DECLARE_TYPE_NAME(BaseType) \
 \
            virtual bool isType(MYGUI_RTTI_TYPE _type) const { return MYGUI_RTTI_GET_TYPE(BaseType) == _type; } \
 \
            template<typename Type> bool isType() const { return isType(MYGUI_RTTI_GET_TYPE(Type)); } \
 \
            template<typename Type> Type* castType(bool _throw = true) \
            { \
                if (this->isType<Type>()) return static_cast<Type*>(this); \
                MYGUI_ASSERT(!_throw, "Error cast type '" << this->getTypeName() << "' to type '" << Type::getClassTypeName() << "' .") \
                return nullptr; \
            } \
 \
            template<typename Type> const Type* castType(bool _throw = true) const \
            { \
                if (this->isType<Type>()) return static_cast<Type*>(this); \
                MYGUI_ASSERT(!_throw, "Error cast type '" << this->getTypeName() << "' to type '" << Type::getClassTypeName() << "' .") \
                return nullptr; \
            }

#define MYGUI_RTTI_DERIVED(DerivedType) \
        public: \
            MYGUI_DECLARE_TYPE_NAME(DerivedType) \
            typedef RTTIBase Base; \
            typedef DerivedType RTTIBase; \
 \
            virtual bool isType(MYGUI_RTTI_TYPE _type) const { return MYGUI_RTTI_GET_TYPE(DerivedType) == _type || Base::isType(_type); } \
 \
            template<typename Type> bool isType() const { return isType(MYGUI_RTTI_GET_TYPE(Type)); }

} // namespace MyGUI

#endif // __MYGUI_RTTI_H__