Package io.keikai.doc.collab.lib0

Class IntDiffOptRleEncoder

java.lang.Object

io.keikai.doc.collab.lib0.Encoder

io.keikai.doc.collab.lib0.IntDiffOptRleEncoder

All Implemented Interfaces:

IntWriteEncoder

public class IntDiffOptRleEncoder
extends Encoder
implements IntWriteEncoder

A combination of the IntDiffEncoder and the UintOptRleEncoder. The count approach is similar to the UintDiffOptRleEncoder, but instead of using the negative bitflag, it encodes in the LSB whether a count is to be read. Therefore, this Encoder only supports 31 bit integers! Encodes [1, 2, 3, 2] as [3, 1, 6, -1] (more specifically [(1 << 1) | 1, (3 << 0) | 0, -1]) Internally uses variable length encoding. Contrary to normal UintVar encoding, the first byte contains: 1 bit that denotes whether the next value is a count (LSB) 1 bit that denotes whether this value is negative (MSB - 1) 1 bit that denotes whether to continue reading the variable length integer (MSB) Therefore, only five bits remain to encode diff ranges. Use this Encoder only when appropriate. In most cases, this is probably a bad idea.

Constructor Summary

Constructors

Constructor	Description
IntDiffOptRleEncoder()

Method Summary

Modifier and Type	Method	Description
Uint8Array	toUint8Array()
void	write(int v)

Methods inherited from class io.keikai.doc.collab.lib0.Encoder

getBufs, getCbuf, getCpos, setCbuf, setCpos

Methods inherited from class java.lang.Object

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

Constructor Details

IntDiffOptRleEncoder

public IntDiffOptRleEncoder()

Method Details

write

public void write(int v)

Specified by:

write in interface IntWriteEncoder

toUint8Array

public Uint8Array toUint8Array()