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#rb none #rnx #preflight 6151a7b659c66a000102f21b #ROBOMERGE-AUTHOR: martin.ridgers #ROBOMERGE-SOURCE: CL 17629130 in //UE5/Main/... #ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v871-17566257) [CL 17629139 by martin ridgers in ue5-release-engine-test branch]
90 lines
2.0 KiB
C++
90 lines
2.0 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreTypes.h"
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namespace UE {
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namespace Trace {
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////////////////////////////////////////////////////////////////////////////////
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class FStreamReader
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{
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public:
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~FStreamReader();
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template <typename Type>
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Type const* GetPointer();
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template <typename Type>
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Type const* GetPointerUnchecked();
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const uint8* GetPointer(uint32 Size);
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const uint8* GetPointerUnchecked();
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void Advance(uint32 Size);
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bool IsEmpty() const;
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int32 GetRemaining() const;
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bool Backtrack(const uint8* To);
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struct FMark* SaveMark() const;
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void RestoreMark(struct FMark* Mark);
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protected:
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uint8* Buffer = nullptr;
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uint32 DemandHint = 0;
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uint32 Cursor = 0;
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uint32 End = 0;
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};
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////////////////////////////////////////////////////////////////////////////////
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template <typename Type>
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Type const* FStreamReader::GetPointer()
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{
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return (Type const*)GetPointer(sizeof(Type));
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}
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////////////////////////////////////////////////////////////////////////////////
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template <typename Type>
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Type const* FStreamReader::GetPointerUnchecked()
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{
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return (Type const*)GetPointerUnchecked();
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}
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////////////////////////////////////////////////////////////////////////////////
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inline const uint8* FStreamReader::GetPointerUnchecked()
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{
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return Buffer + Cursor;
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}
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////////////////////////////////////////////////////////////////////////////////
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class FStreamBuffer
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: public FStreamReader
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{
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public:
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template <typename Lambda>
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int32 Fill(Lambda&& Source);
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void Append(const uint8* Data, uint32 Size);
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uint8* Append(uint32 Size);
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protected:
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void Consolidate();
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uint32 BufferSize = 0;
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};
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////////////////////////////////////////////////////////////////////////////////
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template <typename Lambda>
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inline int32 FStreamBuffer::Fill(Lambda&& Source)
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{
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Consolidate();
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uint8* Dest = Buffer + End;
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int32 ReadSize = Source(Dest, BufferSize - End);
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if (ReadSize > 0)
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{
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End += ReadSize;
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}
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return ReadSize;
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}
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} // namespace Trace
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} // namespace UE
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