Cache.h

Go to the documentation of this file.

// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
 
#include "Core/Types.h"
#include "HAL/Platform.h"
#include "Serialization/Archive.h"
 
namespace UE::CADKernel
{
template<class ObjectType>
class CADKERNEL_API TCache
{
protected:
    ObjectType Value;
    bool bReady;
 
public:
    TCache()
        : Value()
        , bReady(false)
    {
    }
 
    template<typename... InArgTypes>
    TCache(InArgTypes&&... Args)
        : Value(Forward<InArgTypes>(Args)...)
        , bReady(true)
    {
    }
 
    friend FArchive& operator<<(FArchive& Ar, TCache<ObjectType>& Cache)
    {
        Ar << Cache.Value;
        Ar << Cache.bReady;
        return Ar;
    }
 
    void Set(const ObjectType& NewValue)
    {
        Value = NewValue;
        bReady = true;
    }
 
    template<typename... InArgTypes>
    void Set(InArgTypes&&... Args)
    {
        Value.Set(Forward<InArgTypes>(Args)...);
        bReady = true;
    }
 
    void operator=(const ObjectType& NewValue)
    {
        Value = NewValue;
        bReady = true;
    }
 
    void operator+=(const ObjectType& NewValue)
    {
        ensureCADKernel(bReady);
        Value += NewValue;
    }
 
    ObjectType* operator->()
    {
        return &Value;
    }
 
    operator ObjectType& ()
    {
        return Value;
    }
 
    const ObjectType& operator*() const
    {
        return Value;
    }
 
    void SetReady()
    {
        bReady = true;
    }
 
    bool IsValid() const
    {
        return bReady;
    }
 
    void Empty()
    {
        bReady = false;
    }
};
}