DontCopy.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreTypes.h"
 
// Can be used as a wrapper over non-copyable objects (i.e. FCriticalSection) if you still want the class containing your
// object to keep its copyable property without compromising integrity of the object that doesn't support being copied.
// It makes each TDontCopy member of a class an exclusive entity of that class.
 
template <typename T>
struct TDontCopy
{
    TDontCopy() = default;
    ~TDontCopy() = default;
    TDontCopy(TDontCopy&&) {}
    TDontCopy(const TDontCopy&) {}
    TDontCopy& operator=(TDontCopy&&) { return *this; }
    TDontCopy& operator=(const TDontCopy&) { return *this; }
 
    T& Get() { return Value; }
    const T& Get() const { return Value; }
 
    T* operator->()       { return &Value; }
    const T* operator->() const { return &Value; }
 
    T& operator*() { return Value; }
    const T& operator*() const { return Value; }
 
private:
    T Value;
};