DuplicatedDataWriter.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Serialization/ArchiveUObject.h"
#include "UObject/UObjectAnnotation.h"
#include "Serialization/DuplicatedObject.h"
#include "Serialization/LargeMemoryData.h"
#include "Templates/RefCounting.h"
#include "UObject/UObjectThreadContext.h"
 
struct FObjectInstancingGraph;
 
/*----------------------------------------------------------------------------
    FDuplicateDataWriter.
----------------------------------------------------------------------------*/
class FDuplicateDataWriter : public FArchiveUObject
{
private:
 
    class FUObjectAnnotationSparse<FDuplicatedObject,false>&    DuplicatedObjectAnnotation;
    FLargeMemoryData&                       ObjectData;
    int64                                   Offset;
    EObjectFlags                            FlagMask;
    EObjectFlags                            ApplyFlags;
    EInternalObjectFlags InternalFlagMask;
    EInternalObjectFlags ApplyInternalFlags;
    bool bAssignExternalPackages;
 
    struct FObjectInstancingGraph*          InstanceGraph;
 
    //~ Begin FArchive Interface.
 
    virtual FArchive& operator<<(FName& N) override;
    virtual FArchive& operator<<(UObject*& Object) override;
    virtual FArchive& operator<<(FLazyObjectPtr& LazyObjectPtr) override;
    virtual FArchive& operator<<(FField*& Field) override;
    virtual FArchive& operator<<(FObjectPtr& Object) override;
 
    virtual void Serialize(void* Data,int64 Num)
    {
        if (ObjectData.Write(Data, Offset, Num))
        {
            Offset += Num;
        }
    }
 
    virtual void Seek(int64 InPos)
    {
        Offset = InPos;
    }
 
    void AddDuplicate(UObject* SourceObject, UObject* DuplicateObject);
 
public:
    virtual FString GetArchiveName() const { return TEXT("FDuplicateDataWriter"); }
 
    virtual int64 Tell()
    {
        return Offset;
    }
 
    virtual int64 TotalSize()
    {
        return ObjectData.GetSize();
    }
 
    TArray<UObject*>    UnserializedObjects;
 
    UObject* GetDuplicatedObject(UObject* Object, bool bCreateIfMissing = true);
 
    FDuplicateDataWriter(
        FUObjectAnnotationSparse<FDuplicatedObject, false>& InDuplicatedObjects,
        FLargeMemoryData& InObjectData,
        UObject* SourceObject,
        UObject* DestObject,
        EObjectFlags InFlagMask,
        EObjectFlags InApplyMask,
        EInternalObjectFlags InInternalFlagMask,
        EInternalObjectFlags InApplyInternalFlags,
        FObjectInstancingGraph* InInstanceGraph,
        uint32 InPortFlags,
        bool InAssignExternalPackages);
};