Decay.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreTypes.h"
#include "Templates/RemoveReference.h"
#include <type_traits>
 
namespace UE::Core::Private::Decay
{
    template <typename T>
    struct TDecayNonReference
    {
        using Type = std::remove_cv_t<T>;
    };
 
    template <typename T>
    struct TDecayNonReference<T[]>
    {
        typedef T* Type;
    };
 
    template <typename T, uint32 N>
    struct TDecayNonReference<T[N]>
    {
        typedef T* Type;
    };
 
    template <typename RetType, typename... Params>
    struct TDecayNonReference<RetType(Params...)>
    {
        typedef RetType (*Type)(Params...);
    };
}
 
template <typename T>
struct TDecay
{
    typedef typename UE::Core::Private::Decay::TDecayNonReference<typename TRemoveReference<T>::Type>::Type Type;
};