Class PrefixedIntegerCodec

java.lang.Object

io.helidon.common.buffers.PrefixedIntegerCodec

public final class PrefixedIntegerCodec
extends Object

Shared codec for HPACK/QPACK prefixed integers.

Method Summary

Modifier and Type	Method	Description
static int	readInt(BufferData source, int firstByte, int prefixBits)	Read a prefixed integer into an int.
static long	readLong(BufferData source, int firstByte, int prefixBits)	Read a prefixed integer into a long.
static BufferData	writeInt(BufferData target, int value, int leadingBits, int prefixBits)	Write an int prefixed integer.
static BufferData	writeLong(BufferData target, long value, int leadingBits, int prefixBits)	Write a long prefixed integer.

Methods inherited from class Object

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

Method Details

readInt

public static int readInt(BufferData source,
 int firstByte,
 int prefixBits)

Read a prefixed integer into an int.

Parameters:

source - source buffer positioned after the first byte

firstByte - first byte of the encoded integer

prefixBits - number of bits in the first byte reserved for the value, between 1 and 8

Returns:

decoded integer value

Throws:

IllegalArgumentException - if the prefix width is outside the supported range

readLong

public static long readLong(BufferData source,
 int firstByte,
 int prefixBits)

Read a prefixed integer into a long.

Parameters:

source - source buffer positioned after the first byte

firstByte - first byte of the encoded integer

prefixBits - number of bits in the first byte reserved for the value, between 1 and 8

Returns:

decoded integer value

Throws:

IllegalArgumentException - if the prefix width is outside the supported range

writeInt

public static BufferData writeInt(BufferData target,
 int value,
 int leadingBits,
 int prefixBits)

Write an int prefixed integer.

Parameters:

target - target buffer

value - full non-negative value to write

leadingBits - bits stored in the first byte outside of the value prefix

prefixBits - number of bits in the first byte reserved for the value, between 1 and 8

Returns:

target buffer

Throws:

IllegalArgumentException - if the value or prefix width is outside the supported range

writeLong

public static BufferData writeLong(BufferData target,
 long value,
 int leadingBits,
 int prefixBits)

Write a long prefixed integer.

Parameters:

target - target buffer

value - full non-negative value to write

leadingBits - bits stored in the first byte outside of the value prefix

prefixBits - number of bits in the first byte reserved for the value, between 1 and 8

Returns:

target buffer

Throws:

IllegalArgumentException - if the value or prefix width is outside the supported range