ut_RuntimeTypeInfo.h

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#ifndef NW_UT_RUNTIMETYPEINFO_H_
#define NW_UT_RUNTIMETYPEINFO_H_
 
#include <nw/types.h>
 
namespace nw { namespace ut {
 
#define NW_UT_RUNTIME_TYPEINFO_ROOT()
    static const nw::ut::internal::RuntimeTypeInfo* GetRuntimeTypeInfoStatic();
    virtual const nw::ut::internal::RuntimeTypeInfo* GetRuntimeTypeInfo() const
    {
        return GetRuntimeTypeInfoStatic();
    }
 
#define NW_UT_RUNTIME_TYPEINFO(base)
    static const nw::ut::internal::RuntimeTypeInfo* GetRuntimeTypeInfoStatic();
    virtual const nw::ut::internal::RuntimeTypeInfo* GetRuntimeTypeInfo() const override
    {
        return GetRuntimeTypeInfoStatic();
    }
 
#define NW_UT_RUNTIME_TYPEINFO_ROOT_IMPL(clazz)
    const nw::ut::internal::RuntimeTypeInfo* clazz::GetRuntimeTypeInfoStatic() {
        static const nw::ut::internal::RuntimeTypeInfo s_TypeInfo(NULL);
        return &s_TypeInfo;
    }
 
#define NW_UT_RUNTIME_TYPEINFO_IMPL(base, clazz)
    const nw::ut::internal::RuntimeTypeInfo* clazz::GetRuntimeTypeInfoStatic() {
        static const nw::ut::internal::RuntimeTypeInfo s_TypeInfo(base::GetRuntimeTypeInfoStatic());
        return &s_TypeInfo;
    }
 
namespace internal {
 
struct RuntimeTypeInfo
{
    const RuntimeTypeInfo*  m_ParentTypeInfo;
 
    explicit RuntimeTypeInfo(const RuntimeTypeInfo* parent)
        : m_ParentTypeInfo(parent)
    {
    }
 
    bool IsDerivedFrom(const RuntimeTypeInfo* s_TypeInfo) const
    {
        const RuntimeTypeInfo* self = this;
        while (self)
        {
            if (self == s_TypeInfo)
                return true;
 
            self = self->m_ParentTypeInfo;
        }
        return false;
    }
};
 
} // namespace internal
 
} } // namespace nw::ut
 
#endif // NW_UT_RUNTIMETYPEINFO_H_