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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | 175x 175x 119295x 119295x 175x 2749x 2749x 2749x 8201x 8201x 8201x 8201x 8201x 953774x 953774x 953774x 953774x 111094x 111094x 111094x 111094x 953774x 953774x 953774x 953774x 2114x 2114x 28168x 28168x 2114x | import {type ITimestampStruct, type IClockVector, tick, Timestamp} from '../../clock';
import {RelativeTimestamp} from './RelativeTimestamp';
class ClockTableEntry {
constructor(
public index: number,
public clock: ITimestampStruct,
) {}
}
export class ClockEncoder {
public readonly table: Map<number, ClockTableEntry> = new Map<number, ClockTableEntry>();
/** Start from 1, as 0 is reserved for system session ID. */
protected index: number = 1;
public clock: IClockVector | null = null;
public reset(clock: IClockVector) {
this.index = 1;
this.clock = clock;
const entry = new ClockTableEntry(this.index++, tick(clock, -1));
this.table.clear();
this.table.set(clock.sid, entry);
}
public append(ts: ITimestampStruct): RelativeTimestamp {
const time = ts.time;
const sid = ts.sid;
let entry = this.table.get(sid);
if (!entry) {
let clock = this.clock!.peers.get(sid);
if (!clock) clock = new Timestamp(sid, this.clock!.time - 1);
entry = new ClockTableEntry(this.index++, clock);
this.table.set(sid, entry);
}
const clock = entry.clock;
const timeDiff = clock.time - time;
Iif (timeDiff < 0) throw new Error('TIME_TRAVEL');
return new RelativeTimestamp(entry.index, timeDiff);
}
public toJson(): number[] {
const out: number[] = [];
// biome-ignore lint: using .forEach() on Map is the fastest way to iterate
this.table.forEach((entry) => {
const clock = entry.clock;
out.push(clock.sid, clock.time);
});
return out;
}
}
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