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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_DECLARE_TYPE_NAME(Type, Override) \
public: \
static std::string_view getClassTypeName() \
{ \
return #Type; \
} \
/** Get type name as string */ \
virtual std::string_view getTypeName() const Override \
{ \
return getClassTypeName(); \
}
#define MYGUI_RTTI_BASE(BaseType) \
public: \
typedef BaseType RTTIBase; \
MYGUI_DECLARE_TYPE_NAME(BaseType, ) \
/** Compare with selected type */ \
virtual bool isType(const std::type_info& _type) const \
{ \
return typeid(BaseType) == _type; \
} \
/** Compare with selected type */ \
template<typename Type> \
bool isType() const \
{ \
return isType(typeid(Type)); \
} \
/** Try to cast pointer to selected type. \
@param _throw If true throw exception when casting in wrong type, else return nullptr \
*/ \
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; \
} \
/** Try to cast pointer to selected type. \
@param _throw If true throw exception when casting in wrong type, else 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, override) \
typedef RTTIBase Base; \
typedef DerivedType RTTIBase; \
/** Compare with selected type */ \
virtual bool isType(const std::type_info& _type) const override \
{ \
return typeid(DerivedType) == _type || Base::isType(_type); \
} \
/** Compare with selected type */ \
template<typename Type> \
bool isType() const \
{ \
return isType(typeid(Type)); \
}
} // namespace MyGUI
#endif // MYGUI_RTTI_H_
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