package org.xbib.io.compress.xz.delta;
abstract class DeltaCoder {
static final int DISTANCE_MIN = 1;
static final int DISTANCE_MAX = 256;
static final int DISTANCE_MASK = DISTANCE_MAX - 1;
final int distance;
final byte[] history = new byte[DISTANCE_MAX];
int pos = 0;
DeltaCoder(int distance) {
if (distance < DISTANCE_MIN || distance > DISTANCE_MAX) {
throw new IllegalArgumentException();
}
this.distance = distance;
}
}