ChaosVDMemWriterReader.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
#include "ChaosVDSerializedNameTable.h"
#include "HAL/Platform.h"
#include "Misc/EngineVersion.h"
#include "Serialization/CustomVersion.h"
#include "Serialization/MemoryReader.h"
#include "Serialization/MemoryWriter.h"
#include "Templates/SharedPointer.h"
 
class FName;
class FArchive;
 
namespace Chaos::VisualDebugger
{
    struct FChaosVDArchiveHeader
    {
        CHAOS_API static FStringView WrapperTypeName;
 
        FChaosVDArchiveHeader()
        {
        }
 
        FEngineVersion EngineVersion;
 
        FCustomVersionContainer CustomVersionContainer;
 
        CHAOS_API bool Serialize(FArchive& Ar);
 
        CHAOS_API static FChaosVDArchiveHeader Current();
    };
 
    FORCEINLINE void NameTableFNameSerializer(FArchive& Ar ,FName& Name, const TSharedRef<FChaosVDSerializableNameTable>& InNameTable)
    {
        // Serialize the FName as a CVD Name ID
        if (Ar.IsLoading())
        {
            uint64 NameID = 0;
            Ar << NameID;
                
            Name = InNameTable->GetNameFromTable(NameID);
        }
        else
        {
            uint64 NameID = InNameTable->AddNameToTable(Name);
            Ar << NameID;
        }
    }
 
    class FChaosVDMemoryWriter final : public FMemoryWriter
    {
    public:
        FChaosVDMemoryWriter(TArray<uint8>& InBytes, const TSharedRef<FChaosVDSerializableNameTable>& InNameTableInstance)
            : FMemoryWriter(InBytes), NameTableInstance(InNameTableInstance)
        {
        }
 
        virtual FArchive& operator<<(FName& Name) override
        {
            NameTableFNameSerializer(*this, Name, NameTableInstance);
            return *this;
        }
 
        TSharedRef<FChaosVDSerializableNameTable> NameTableInstance;
    };
 
    class FChaosVDMemoryReader final : public FMemoryReader
    {
    public:
        FChaosVDMemoryReader(const TArray<uint8>& InBytes, const TSharedRef<FChaosVDSerializableNameTable>& InNameTableInstance)
            : FMemoryReader(InBytes), NameTableInstance(InNameTableInstance)
        {
        }
 
        virtual FArchive& operator<<(FName& Name) override
        {
            NameTableFNameSerializer(*this, Name, NameTableInstance);
            return *this;
        }
 
        TSharedRef<FChaosVDSerializableNameTable> NameTableInstance;
    };
}