AssetRegistryArchive.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "AssetRegistry/AssetDataTagMapSerializationDetails.h"
#include "Serialization/LargeMemoryWriter.h"
#include "UObject/NameBatchSerialization.h"
 
struct FAssetData;
struct FAssetRegistrySerializationOptions;
 
// Header containing versioning & data stripping information for a serialized asset registry state.
struct FAssetRegistryHeader
{
    FAssetRegistryVersion::Type Version = FAssetRegistryVersion::LatestVersion;
    bool bFilterEditorOnlyData = false; // True if editor only data has been removed/should be removed while saving 
 
    void SerializeHeader(FArchive& Ar);
};
 
class FAssetRegistryReader : public FArchiveProxy
{
public:
    FAssetRegistryReader(FArchive& Inner, int32 NumWorkers, FAssetRegistryHeader Header);
    ~FAssetRegistryReader();
 
    virtual FArchive& operator<<(FName& Value) override;
 
    void SerializeTagsAndBundles(FAssetData& Out);
    void SerializeTagsAndBundlesOldVersion(FAssetData& Out, FAssetRegistryVersion::Type Version);
 
    void WaitForTasks();
 
private:
    TArray<FDisplayNameEntryId> Names;
    TRefCountPtr<const FixedTagPrivate::FStore> Tags;
    TFuture<void> Task;
 
    friend FAssetDataTagMapSharedView LoadTags(FAssetRegistryReader& Reader);
};
 
#if ALLOW_NAME_BATCH_SAVING
 
class FAssetRegistryWriterBase
{
protected:
    FLargeMemoryWriter MemWriter;
};
 
struct FAssetRegistryWriterOptions
{
    FAssetRegistryWriterOptions() = default;
    explicit FAssetRegistryWriterOptions(const FAssetRegistrySerializationOptions& Options);
 
    FixedTagPrivate::FOptions Tags;
};
 
class FAssetRegistryWriter : public FAssetRegistryWriterBase, public FArchiveProxy
{
public:
    FAssetRegistryWriter(const FAssetRegistryWriterOptions& Options, FArchive& Out);
    ~FAssetRegistryWriter();
 
    virtual FArchive& operator<<(FName& Value) override;
 
    void SerializeTagsAndBundles(const FAssetData& In);
 
private:
    TMap<FDisplayNameEntryId, uint32> Names;
    FixedTagPrivate::FStoreBuilder Tags;
    FArchive& TargetAr;
 
    friend void SaveTags(FAssetRegistryWriter& Writer, const FAssetDataTagMapSharedView& Map);
};
 
#endif