All files / json-crdt-patch/codec/clock ClockTable.ts

97.5% Statements 39/40
0% Branches 0/1
100% Functions 9/9
100% Lines 35/35

Press n or j to go to the next uncovered block, b, p or k for the previous block.

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 52 53 54 55 56 57 58 59 60 61 62 63 6412x       12x   56674x 56674x       12x   1635x 1635x   26697x 1635x       1639x 1639x 1639x 26701x 1639x     3274x 3274x     65733x 65733x 65733x 65733x 65733x       56674x 56674x 56674x 56674x       290624x 290624x 290624x       1637x 1637x 1637x 1637x 28337x 28337x 28337x        
import {type ITimestampStruct, type IClockVector, Timestamp} from '../../clock';
import type {CrdtReader} from '../../util/binary/CrdtReader';
import type {CrdtWriter} from '../../util/binary/CrdtWriter';
 
export class ClockTableEntry {
  constructor(
    public index: number,
    public id: ITimestampStruct,
  ) {}
}
 
export class ClockTable {
  public static from(clock: IClockVector): ClockTable {
    const table = new ClockTable();
    table.push(new Timestamp(clock.sid, clock.time - 1));
    // biome-ignore lint: using .forEach() on Map is the fastest way to iterate
    clock.peers.forEach((id) => table.push(id));
    return table;
  }
 
  public static decode(reader: CrdtReader): ClockTable {
    const clockTable = new ClockTable();
    const length = reader.vu57();
    clockTable.push(new Timestamp(reader.vu57(), reader.vu57()));
    for (let i = 1; i < length; i++) clockTable.push(new Timestamp(reader.vu57(), reader.vu57()));
    return clockTable;
  }
 
  public readonly bySid: Map<number, ClockTableEntry> = new Map<number, ClockTableEntry>();
  public readonly byIdx: ITimestampStruct[] = [];
 
  public parseField(field: `${string}_${string}`): ITimestampStruct {
    const underscoreIndex = field.indexOf('_');
    const relativeSid = Number.parseInt(field.slice(0, underscoreIndex), 36);
    const time = Number.parseInt(field.slice(underscoreIndex + 1), 36);
    const clock = this.byIdx[relativeSid];
    return new Timestamp(clock.sid, time);
  }
 
  public push(id: ITimestampStruct): void {
    const byIdx = this.byIdx;
    const index = byIdx.length;
    byIdx.push(id);
    this.bySid.set(id.sid, new ClockTableEntry(index, id));
  }
 
  public getBySid(sid: number): ClockTableEntry {
    const entry = this.bySid.get(sid);
    Iif (!entry) throw new Error('CLOCK_NOT_FOUND');
    return entry;
  }
 
  public write(writer: CrdtWriter): void {
    const table = this.byIdx;
    const length = table.length;
    writer.vu57(length);
    for (let i = 0; i < length; i++) {
      const clock = table[i];
      writer.vu57(clock.sid);
      writer.vu57(clock.time);
    }
  }
}