Files
UnrealEngineUWP/Engine/Source/Developer/DerivedDataCache/Public/DerivedDataPayload.h
devin doucette 9c01e2fc04 DDC: Moved FPayloadId into a dedicated header
#rb Zousar.Shaker
#rnx

#ROBOMERGE-SOURCE: CL 17426140 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v865-17346139)

[CL 17426194 by devin doucette in ue5-release-engine-test branch]
2021-09-03 16:30:53 -04:00

121 lines
3.7 KiB
C++

// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
#include "CoreTypes.h"
#include "Compression/CompressedBuffer.h"
#include "DerivedDataPayloadId.h"
#include "IO/IoHash.h"
namespace UE::DerivedData
{
/**
* A payload is described by an ID and by the hash and size of its raw buffer (uncompressed).
*
* Payloads may be constructed with or without data in the form of a compressed buffer. A payload
* without data can be used as a reference to the payload.
*/
class FPayload
{
public:
/** Construct a null payload. */
FPayload() = default;
/** Construct a payload with no hash, size, or data. */
inline explicit FPayload(const FPayloadId& Id);
/** Construct a payload from a the hash and size of the raw buffer. */
inline FPayload(const FPayloadId& Id, const FIoHash& RawHash, uint64 RawSize);
/** Construct a payload from a compressed buffer, which is cloned if not owned. */
inline FPayload(const FPayloadId& Id, const FCompressedBuffer& Data);
inline FPayload(const FPayloadId& Id, FCompressedBuffer&& Data);
/** Returns the ID for the payload. */
inline const FPayloadId& GetId() const { return Id; }
/** Returns the hash of the raw buffer (uncompressed) for the payload. */
inline const FIoHash& GetRawHash() const { return RawHash; }
/** Returns the size of the raw buffer (uncompressed) for the payload. */
inline uint64 GetRawSize() const { return RawSize; }
/** Returns the compressed buffer for the payload. May be null. */
inline const FCompressedBuffer& GetData() const { return Data; }
/** Whether the compressed buffer for the payload is available. */
inline bool HasData() const { return !!Data; }
/** Whether this is null. */
inline bool IsNull() const { return Id.IsNull(); }
/** Whether this is not null. */
inline bool IsValid() const { return !IsNull(); }
/** Whether this is not null. */
inline explicit operator bool() const { return IsValid(); }
/** Reset this to null. */
inline void Reset() { *this = FPayload(); }
/** A null payload. */
static const FPayload Null;
private:
FPayloadId Id;
FIoHash RawHash;
uint64 RawSize = 0;
FCompressedBuffer Data;
};
inline const FPayload FPayload::Null;
inline FPayload::FPayload(const FPayloadId& InId)
: Id(InId)
{
checkf(Id.IsValid(), TEXT("A valid ID is required to construct a payload."));
}
inline FPayload::FPayload(const FPayloadId& InId, const FIoHash& InRawHash, const uint64 InRawSize)
: Id(InId)
, RawHash(InRawHash)
, RawSize(InRawSize)
{
checkf(Id.IsValid(), TEXT("A valid ID is required to construct a payload."));
}
inline FPayload::FPayload(const FPayloadId& InId, const FCompressedBuffer& InData)
: Id(InId)
, RawHash(InData.GetRawHash())
, RawSize(InData.GetRawSize())
, Data(InData.MakeOwned())
{
checkf(Id.IsValid(), TEXT("A valid ID is required to construct a payload."));
}
inline FPayload::FPayload(const FPayloadId& InId, FCompressedBuffer&& InData)
: Id(InId)
, RawHash(InData.GetRawHash())
, RawSize(InData.GetRawSize())
, Data(MoveTemp(InData).MakeOwned())
{
checkf(Id.IsValid(), TEXT("A valid ID is required to construct a payload."));
}
/** Compare payloads by their ID and the hash and size of their raw buffer. */
inline bool operator==(const FPayload& A, const FPayload& B)
{
return A.GetId() == B.GetId() && A.GetRawHash() == B.GetRawHash() && A.GetRawSize() == B.GetRawSize();
}
/** Compare payloads by their ID and the hash and size of their raw buffer. */
inline bool operator<(const FPayload& A, const FPayload& B)
{
const FPayloadId& IdA = A.GetId();
const FPayloadId& IdB = B.GetId();
const FIoHash& HashA = A.GetRawHash();
const FIoHash& HashB = B.GetRawHash();
return !(IdA == IdB) ? IdA < IdB : !(HashA == HashB) ? HashA < HashB : A.GetRawSize() < B.GetRawSize();
}
} // UE::DerivedData