BinaryStreamRef is to BinaryStream what ArrayRef is to an Array. More...

#include "llvm/Support/BinaryStreamRef.h"

Inheritance diagram for llvm::BinaryStreamRef:

Collaboration diagram for llvm::BinaryStreamRef:

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Public Member Functions
	BinaryStreamRef ()=default

	BinaryStreamRef (BinaryStream &Stream)

	BinaryStreamRef (BinaryStream &Stream, uint64_t Offset, std::optional< uint64_t > Length)

	BinaryStreamRef (ArrayRef< uint8_t > Data, llvm::support::endianness Endian)

	BinaryStreamRef (StringRef Data, llvm::support::endianness Endian)

	BinaryStreamRef (const BinaryStreamRef &Other)=default

BinaryStreamRef &	operator= (const BinaryStreamRef &Other)=default

	BinaryStreamRef (BinaryStreamRef &&Other)=default

BinaryStreamRef &	operator= (BinaryStreamRef &&Other)=default

	BinaryStreamRef (BinaryStreamRef &S, uint64_t Offset, uint64_t Length)=delete

Error	readBytes (uint64_t Offset, uint64_t Size, ArrayRef< uint8_t > &Buffer) const
	Given an Offset into this StreamRef and a Size, return a reference to a buffer owned by the stream.

Error	readLongestContiguousChunk (uint64_t Offset, ArrayRef< uint8_t > &Buffer) const
	Given an Offset into this BinaryStreamRef, return a reference to the largest buffer the stream could support without necessitating a copy.

Public Member Functions inherited from llvm::BinaryStreamRefBase< BinaryStreamRef, BinaryStream >
llvm::support::endianness	getEndian () const

uint64_t	getLength () const

BinaryStreamRef	drop_front (uint64_t N) const
	Return a new BinaryStreamRef with the first `N` elements removed.

BinaryStreamRef	drop_back (uint64_t N) const
	Return a new BinaryStreamRef with the last `N` elements removed.

BinaryStreamRef	keep_front (uint64_t N) const
	Return a new BinaryStreamRef with only the first `N` elements remaining.

BinaryStreamRef	keep_back (uint64_t N) const
	Return a new BinaryStreamRef with only the last `N` elements remaining.

BinaryStreamRef	drop_symmetric (uint64_t N) const
	Return a new BinaryStreamRef with the first and last `N` elements removed.

BinaryStreamRef	slice (uint64_t Offset, uint64_t Len) const
	Return a new BinaryStreamRef with the first `Offset` elements removed, and retaining exactly `Len` elements.

bool	valid () const

Friends
class	WritableBinaryStreamRef

Additional Inherited Members
Protected Member Functions inherited from llvm::BinaryStreamRefBase< BinaryStreamRef, BinaryStream >
	BinaryStreamRefBase ()=default

	BinaryStreamRefBase (BinaryStream &BorrowedImpl)

	BinaryStreamRefBase (std::shared_ptr< BinaryStream > SharedImpl, uint64_t Offset, std::optional< uint64_t > Length)

	BinaryStreamRefBase (BinaryStream &BorrowedImpl, uint64_t Offset, std::optional< uint64_t > Length)

	BinaryStreamRefBase (const BinaryStreamRefBase &Other)=default

	BinaryStreamRefBase (BinaryStreamRefBase &&Other)=default

BinaryStreamRefBase &	operator= (const BinaryStreamRefBase &Other)=default

BinaryStreamRefBase &	operator= (BinaryStreamRefBase &&Other)=default

Error	checkOffsetForRead (uint64_t Offset, uint64_t DataSize) const

Protected Attributes inherited from llvm::BinaryStreamRefBase< BinaryStreamRef, BinaryStream >
std::shared_ptr< BinaryStream >	SharedImpl

BinaryStream *	BorrowedImpl

uint64_t	ViewOffset

std::optional< uint64_t >	Length

Detailed Description

BinaryStreamRef is to BinaryStream what ArrayRef is to an Array.

It provides copy-semantics and read only access to a "window" of the underlying BinaryStream. Note that BinaryStreamRef is not a BinaryStream. That is to say, it does not inherit and override the methods of BinaryStream. In general, you should not pass around pointers or references to BinaryStreams and use inheritance to achieve polymorphism. Instead, you should pass around BinaryStreamRefs by value and achieve polymorphism that way.

Definition at line 155 of file BinaryStreamRef.h.

Constructor & Destructor Documentation

◆ BinaryStreamRef() [1/8]

llvm::BinaryStreamRef::BinaryStreamRef ( )

default

◆ BinaryStreamRef() [2/8]

BinaryStreamRef::BinaryStreamRef ( BinaryStream & Stream )

Definition at line 67 of file BinaryStreamRef.cpp.

◆ BinaryStreamRef() [3/8]

BinaryStreamRef::BinaryStreamRef	(	BinaryStream &	Stream,
		uint64_t	Offset,
		std::optional< uint64_t >	Length
	)

Definition at line 69 of file BinaryStreamRef.cpp.

◆ BinaryStreamRef() [4/8]

BinaryStreamRef::BinaryStreamRef	(	ArrayRef< uint8_t >	Data,
		llvm::support::endianness	Endian
	)

explicit

Definition at line 72 of file BinaryStreamRef.cpp.

◆ BinaryStreamRef() [5/8]

BinaryStreamRef::BinaryStreamRef	(	StringRef	Data,
		llvm::support::endianness	Endian
	)

explicit

Definition at line 75 of file BinaryStreamRef.cpp.

◆ BinaryStreamRef() [6/8]

llvm::BinaryStreamRef::BinaryStreamRef ( const BinaryStreamRef & Other )

default

◆ BinaryStreamRef() [7/8]

llvm::BinaryStreamRef::BinaryStreamRef ( BinaryStreamRef && Other )

default

◆ BinaryStreamRef() [8/8]

llvm::BinaryStreamRef::BinaryStreamRef	(	BinaryStreamRef &	S,
		uint64_t	Offset,
		uint64_t	Length
	)

delete

Member Function Documentation

◆ operator=() [1/2]

BinaryStreamRef & llvm::BinaryStreamRef::operator= ( BinaryStreamRef && Other )

default

◆ operator=() [2/2]

BinaryStreamRef & llvm::BinaryStreamRef::operator= ( const BinaryStreamRef & Other )

default

◆ readBytes()

Error BinaryStreamRef::readBytes	(	uint64_t	Offset,
		uint64_t	Size,
		ArrayRef< uint8_t > &	Buffer
	)		const

Given an Offset into this StreamRef and a Size, return a reference to a buffer owned by the stream.

Returns: a success error code if the entire range of data is within the bounds of this BinaryStreamRef's view and the implementation could read the data, and an appropriate error code otherwise.

Definition at line 78 of file BinaryStreamRef.cpp.

References llvm::BinaryStreamRefBase< BinaryStreamRef, BinaryStream >::BorrowedImpl, llvm::BinaryStreamRefBase< BinaryStreamRef, BinaryStream >::checkOffsetForRead(), llvm::Offset, llvm::BinaryStream::readBytes(), Size, and llvm::BinaryStreamRefBase< BinaryStreamRef, BinaryStream >::ViewOffset.

Referenced by llvm::FixedStreamArray< T >::operator[](), llvm::BinaryStreamReader::peek(), llvm::BinaryStreamReader::readBytes(), and llvm::msf::MappedBlockStream::readLongestContiguousChunk().