boxed_enum.h

 
#ifndef _aspose_system_boxed_enum_h_
#define _aspose_system_boxed_enum_h_
 
#include <system/boxed_value.h>
#include <system/reflection.h>
#include <system/details/is_defined.h>
#include <cstdint>
 
namespace System
{
    template<class T>
    static bool IsEnumMetaInfoDefined(T value);
 
    template <class T>
    static System::String EnumGetName(T value);
 
    template<typename E, typename UT = typename std::underlying_type<E>::type>
    class ASPOSECPP_SHARED_CLASS BoxedEnum : public System::BoxedValue<UT>
    {
        // BoxedEnum now takes TypeInfo from TypeInfo. It is required that BoxedEnum<T> and EnumValues<T> use the same.
        typedef TypeInfo::BoxedValue<E> ThisTypeInfo;
 
        RTTI_INFO_CUSTOM(System::BoxedEnum<E>, System::BaseTypesInfo<System::BoxedValue<UT>>);
 
    public:
        BoxedEnum(E e) : System::BoxedValue<UT>(static_cast<UT>(e)) {}
 
        bool IsBoxedEnum() override
        {
            return true;
        }
 
        uint64_t GetUnsignedLongLongValue() const override
        {
            return static_cast<uint64_t>(System::BoxedValue<UT>::unbox());
        }
 
        System::String ToString() const override
        {
            return MakeEnumString();
        }
 
    private:
        template<typename T = E>
        typename std::enable_if<!Details::IsDefined<EnumMetaInfo<T>>::value, System::String>::type
        MakeEnumString() const
        {
            return String::Format(u"{0}", System::BoxedValue<UT>::unbox());
        }
 
        template<typename T = E>
        typename std::enable_if<Details::IsDefined<EnumMetaInfo<T>>::value, System::String>::type
        MakeEnumString() const
        {
            const UT& underlyingValue = System::BoxedValue<UT>::unbox();
            const T& enumValue = static_cast<T>(underlyingValue);
            System::String res = EnumGetName(enumValue);
            if (System::String::IsNullOrEmpty(res))
                res = System::String::Format(u"{0}", underlyingValue);
            return res;
        }
 
    };
}
 
#endif //_aspose_system_boxed_enum_h_