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50 lines
1.3 KiB
C++
50 lines
1.3 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "DerivedDataPayload.h"
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#include "Containers/StringConv.h"
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#include "Hash/xxhash.h"
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#include "Serialization/CompactBinary.h"
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#include "Templates/UnrealTemplate.h"
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namespace UE::DerivedData
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{
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FPayloadId::FPayloadId(const FMemoryView Id)
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{
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checkf(Id.GetSize() == sizeof(ByteArray),
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TEXT("FPayloadId cannot be constructed from a view of %" UINT64_FMT " bytes."), Id.GetSize());
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FMemory::Memcpy(Bytes, Id.GetData(), sizeof(ByteArray));
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}
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FPayloadId::FPayloadId(const FCbObjectId& Id)
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: FPayloadId(ImplicitConv<const ByteArray&>(Id))
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{
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}
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FPayloadId::operator FCbObjectId() const
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{
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return FCbObjectId(ImplicitConv<const ByteArray&>(*this));
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}
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FPayloadId FPayloadId::FromHash(const FIoHash& Hash)
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{
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checkf(!Hash.IsZero(), TEXT("FPayloadId requires a non-zero hash."));
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return FPayloadId(MakeMemoryView(Hash.GetBytes()).Left(sizeof(ByteArray)));
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}
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FPayloadId FPayloadId::FromName(const FAnsiStringView Name)
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{
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checkf(!Name.IsEmpty(), TEXT("FPayloadId requires a non-empty name."));
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uint8 HashBytes[16];
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FXxHash128::HashBuffer(Name.GetData(), Name.Len()).ToByteArray(HashBytes);
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return FPayloadId(MakeMemoryView(HashBytes, sizeof(ByteArray)));
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}
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FPayloadId FPayloadId::FromName(const FWideStringView Name)
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{
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return FPayloadId::FromName(FTCHARToUTF8(Name));
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}
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} // UE::DerivedData
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