Xapian::BitReader Class Reference

Read a stream created by BitWriter. More...

#include <bitstream.h>

Collaboration diagram for Xapian::BitReader:

Classes
struct	DIStack
struct	DIState

Public Member Functions
	BitReader ()
	BitReader (const std::string &buf_)
	BitReader (const std::string &buf_, size_t skip)
void	init (const std::string &buf_, size_t skip=0)
Xapian::termpos	decode (Xapian::termpos outof, bool force=false)
bool	check_all_gone () const
void	decode_interpolative (int j, int k, Xapian::termpos pos_j, Xapian::termpos pos_k)
	Perform interpolative decoding between elements between j and k. More...
Xapian::termpos	decode_interpolative_next ()
	Perform on-demand interpolative decoding. More...

Private Member Functions
Xapian::termpos	read_bits (int count)

Private Attributes
std::string	buf
size_t	idx
int	n_bits
Xapian::termpos	acc
std::vector< DIStack >	di_stack
DIState	di_current

Detailed Description

Read a stream created by BitWriter.

Definition at line 64 of file bitstream.h.

Constructor & Destructor Documentation

BitReader() [1/3]

Xapian::BitReader::BitReader ( )

inline

Definition at line 118 of file bitstream.h.

BitReader() [2/3]

Xapian::BitReader::BitReader ( const std::string &  buf_ )

inlineexplicit

Definition at line 121 of file bitstream.h.

BitReader() [3/3]

Xapian::BitReader::BitReader ( const std::string &  buf_, size_t  skip  )

inline

Definition at line 125 of file bitstream.h.

Member Function Documentation

check_all_gone()

bool Xapian::BitReader::check_all_gone ( ) const

inline

Definition at line 145 of file bitstream.h.

decode()

Xapian::termpos Xapian::BitReader::decode	(	Xapian::termpos	outof,
		bool	force = false
	)

Definition at line 176 of file bitstream.cc.

References Assert, highest_order_bit(), and Xapian::safe_shl().

Referenced by check_chert_table(), check_glass_table(), ChertPositionListTable::positionlist_count(), and GlassPositionListTable::positionlist_count().

decode_interpolative()

void Xapian::BitReader::decode_interpolative	(	int	j,
		int	k,
		Xapian::termpos	pos_j,
		Xapian::termpos	pos_k
	)

Perform interpolative decoding between elements between j and k.

Definition at line 224 of file bitstream.cc.

References Assert, and highest_order_bit().

decode_interpolative_next()

Xapian::termpos Xapian::BitReader::decode_interpolative_next

(

)

Perform on-demand interpolative decoding.

Definition at line 234 of file bitstream.cc.

References Assert, and decode().

init()

void Xapian::BitReader::init ( const std::string &  buf_, size_t  skip = 0  )

inline

Definition at line 129 of file bitstream.h.

References decode(), and Xapian::BitReader::DIState::uninit().

read_bits()

Xapian::termpos Xapian::BitReader::read_bits ( int  count )

private

Definition at line 197 of file bitstream.cc.

References Assert.

Member Data Documentation

acc

Xapian::termpos Xapian::BitReader::acc

private

Definition at line 68 of file bitstream.h.

buf

std::string Xapian::BitReader::buf

private

Definition at line 65 of file bitstream.h.

di_current

DIState Xapian::BitReader::di_current

private

Definition at line 114 of file bitstream.h.

di_stack

std::vector<DIStack> Xapian::BitReader::di_stack

private

Definition at line 113 of file bitstream.h.

idx

size_t Xapian::BitReader::idx

private

Definition at line 66 of file bitstream.h.

n_bits

int Xapian::BitReader::n_bits

private

Definition at line 67 of file bitstream.h.

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The documentation for this class was generated from the following files:

• common/bitstream.h
• common/bitstream.cc