Package org.fusesource.hawtbuf

Class AbstractVarIntSupport

java.lang.Object

org.fusesource.hawtbuf.AbstractVarIntSupport

Direct Known Subclasses:

BufferEditor

public abstract class AbstractVarIntSupport
extends java.lang.Object

Constructor Summary

Constructors

Constructor	Description
AbstractVarIntSupport()

Method Summary

Modifier and Type	Method	Description
static int	computeVarIntSize(int value)	Compute the number of bytes that would be needed to encode a varint.
static int	computeVarLongSize(long value)	Compute the number of bytes that would be needed to encode a varint.
static int	computeVarSignedIntSize(int value)	Compute the number of bytes that would be needed to encode a signed varint.
static int	computeVarSignedLongSize(long value)	Compute the number of bytes that would be needed to encode a signed varint.
private static int	decodeZigZag32(int n)
private static long	decodeZigZag64(long n)
private static int	encodeZigZag32(int n)
private static long	encodeZigZag64(long n)
protected abstract byte	readByte()
int	readVarInt()	Read a raw Varint from the stream.
long	readVarLong()	Read a raw Varint from the stream.
int	readVarSignedInt()	Read an sint32 field value from the stream.
long	readVarSignedLong()	Read an sint64 field value from the stream.
protected abstract void	writeByte(int value)
void	writeVarInt(int value)	Encode and write a varint.
void	writeVarLong(long value)	Encode and write a varint.
void	writeVarSignedInt(int value)
void	writeVarSignedLong(long value)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractVarIntSupport

public AbstractVarIntSupport()

Method Detail

readByte

protected abstract byte readByte()
                          throws java.io.IOException

Throws:

java.io.IOException

writeByte

protected abstract void writeByte(int value)
                           throws java.io.IOException

Throws:

java.io.IOException

readVarInt

public int readVarInt()
               throws java.io.IOException

Read a raw Varint from the stream. If larger than 32 bits, discard the upper bits.

Throws:

java.io.IOException

readVarLong

public long readVarLong()
                 throws java.io.IOException

Read a raw Varint from the stream.

Throws:

java.io.IOException

readVarSignedInt

public int readVarSignedInt()
                     throws java.io.IOException

Read an sint32 field value from the stream.

Throws:

java.io.IOException

readVarSignedLong

public long readVarSignedLong()
                       throws java.io.IOException

Read an sint64 field value from the stream.

Throws:

java.io.IOException

writeVarInt

public void writeVarInt(int value)
                 throws java.io.IOException

Encode and write a varint. value is treated as unsigned, so it won't be sign-extended if negative.

Throws:

java.io.IOException

writeVarLong

public void writeVarLong(long value)
                  throws java.io.IOException

Encode and write a varint.

Throws:

java.io.IOException

writeVarSignedInt

public void writeVarSignedInt(int value)
                       throws java.io.IOException

Throws:

java.io.IOException

writeVarSignedLong

public void writeVarSignedLong(long value)
                        throws java.io.IOException

Throws:

java.io.IOException

decodeZigZag32

private static int decodeZigZag32(int n)

decodeZigZag64

private static long decodeZigZag64(long n)

encodeZigZag32

private static int encodeZigZag32(int n)

encodeZigZag64

private static long encodeZigZag64(long n)

computeVarIntSize

public static int computeVarIntSize(int value)

Compute the number of bytes that would be needed to encode a varint. value is treated as unsigned, so it won't be sign-extended if negative.

computeVarLongSize

public static int computeVarLongSize(long value)

Compute the number of bytes that would be needed to encode a varint.

computeVarSignedIntSize

public static int computeVarSignedIntSize(int value)

Compute the number of bytes that would be needed to encode a signed varint.

computeVarSignedLongSize

public static int computeVarSignedLongSize(long value)

Compute the number of bytes that would be needed to encode a signed varint.