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54 lines
1.9 KiB
C++
54 lines
1.9 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#include "CborReader.h"
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#include "IStructDeserializerBackend.h"
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/**
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* Implements a reader for UStruct deserialization using Cbor.
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*/
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class SERIALIZATION_API FCborStructDeserializerBackend
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: public IStructDeserializerBackend
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{
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public:
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/**
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* Creates and initializes a new instance.
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* @param Archive The archive to deserialize from.
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* @param CborDataEndianness The CBOR data endianness stored in the archive.
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* @note For backward compatibility and performance, the implementation default to the the platform endianness rather than the CBOR standard one (big endian).
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*/
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FCborStructDeserializerBackend(FArchive& Archive, ECborEndianness CborDataEndianness = ECborEndianness::Platform);
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virtual ~FCborStructDeserializerBackend();
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public:
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// IStructDeserializerBackend interface
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virtual const FString& GetCurrentPropertyName() const override;
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virtual FString GetDebugString() const override;
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virtual const FString& GetLastErrorMessage() const override;
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virtual bool GetNextToken(EStructDeserializerBackendTokens& OutToken) override;
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virtual bool ReadProperty(FProperty* Property, FProperty* Outer, void* Data, int32 ArrayIndex) override;
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virtual bool ReadPODArray(FArrayProperty* ArrayProperty, void* Data) override;
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virtual void SkipArray() override;
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virtual void SkipStructure() override;
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private:
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/** Holds the Cbor reader used for the actual reading of the archive. */
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FCborReader CborReader;
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/** Holds the last read Cbor Context. */
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FCborContext LastContext;
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/** Holds the last map key. */
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FString LastMapKey;
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/** The index of the next byte to copy from the CBOR byte stream into the corresponding TArray<uint8>/TArray<int8> property. */
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int32 DeserializingByteArrayIndex = 0;
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/** Whether a TArray<uint8>/TArray<int8> property is being deserialized. */
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bool bDeserializingByteArray = false;
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};
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