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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 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 | 13x 13x 13x 13x 13x 13x 68445x 13x 13028x 13x 8656x 8656x 8656x 8656x 8656x 8656x 8656x 8656x 49100x 49100x 3841x 3841x 3841x 1365x 1365x 6014x 6014x 4x 4x 4877x 4877x 1373x 1373x 3951x 3951x 2826x 2826x 6494x 6494x 6494x 6494x 6494x 17433x 17433x 6494x 6494x 2x 2x 2x 2x 2x 2x 2x 2x 2x 7405x 7405x 2830x 2830x 2866x 2866x 2866x 2866x 2866x 8497x 2866x 2866x 4160x 4160x 4160x 4160x 13028x 4160x 4160x 1092x 1092x 8656x 8656x 8656x | import {JsonCrdtPatchOpcode} from '../../constants';
import {fromBase64} from '@jsonjoy.com/base64/lib/fromBase64';
import {
type ITimespanStruct,
type ITimestampStruct,
ClockVector,
ServerClockVector,
Timespan,
Timestamp,
} from '../../clock';
import type {Patch} from '../../Patch';
import {PatchBuilder} from '../../PatchBuilder';
import {SESSION} from '../../constants';
import type * as types from './types';
const timestamp = (sid: number, x: types.CompactCodecTimestamp): ITimestampStruct => {
return Array.isArray(x) ? new Timestamp(x[0], x[1]) : new Timestamp(sid, x);
};
const timespan = (sid: number, span: types.CompactCodecTimespan): ITimespanStruct => {
return span.length === 3 ? new Timespan(span[0], span[1], span[2]) : new Timespan(sid, span[0], span[1]);
};
/**
* Decodes a JSON CRDT Patch from a "compact" POJO into a {@link Patch} instance.
*
* @param data A JavaScript POJO array in the compact codec format.
* @returns A decoded patch.
*/
export const decode = (data: types.CompactCodecPatch): Patch => {
const header = data[0];
const x = header[0];
const clock = Array.isArray(x) ? new ClockVector(x[0], x[1]) : new ServerClockVector(SESSION.SERVER, x as number);
const sid = clock.sid;
const time = clock.time;
const builder = new PatchBuilder(clock);
const length = data.length;
for (let i = 1; i < length; i++) {
const op = data[i] as types.CompactCodecOperation;
switch (op[0]) {
case JsonCrdtPatchOpcode.new_con: {
const [, value, isTimestamp] = op;
builder.const(isTimestamp ? timestamp(sid, value as types.CompactCodecTimestamp) : value);
break;
}
case JsonCrdtPatchOpcode.new_val: {
builder.val();
break;
}
case JsonCrdtPatchOpcode.new_obj: {
builder.obj();
break;
}
case JsonCrdtPatchOpcode.new_vec: {
builder.vec();
break;
}
case JsonCrdtPatchOpcode.new_str: {
builder.str();
break;
}
case JsonCrdtPatchOpcode.new_bin: {
builder.bin();
break;
}
case JsonCrdtPatchOpcode.new_arr: {
builder.arr();
break;
}
case JsonCrdtPatchOpcode.ins_val: {
builder.setVal(timestamp(sid, op[1]), timestamp(sid, op[2]));
break;
}
case JsonCrdtPatchOpcode.ins_obj: {
const obj = timestamp(sid, op[1]);
const tuples: [key: string, value: ITimestampStruct][] = [];
const value = op[2];
const length = value.length;
for (let j = 0; j < length; j++) {
const [key, x] = value[j];
tuples.push([key, timestamp(sid, x)]);
}
builder.insObj(obj, tuples);
break;
}
case JsonCrdtPatchOpcode.ins_vec: {
const obj = timestamp(sid, op[1]);
const tuples: [key: number, value: ITimestampStruct][] = [];
const value = op[2];
const length = value.length;
for (let j = 0; j < length; j++) {
const [key, x] = value[j];
tuples.push([key, timestamp(sid, x)]);
}
builder.insVec(obj, tuples);
break;
}
case JsonCrdtPatchOpcode.ins_str: {
builder.insStr(timestamp(sid, op[1]), timestamp(sid, op[2]), op[3]);
break;
}
case JsonCrdtPatchOpcode.ins_bin: {
builder.insBin(timestamp(sid, op[1]), timestamp(sid, op[2]), fromBase64(op[3]));
break;
}
case JsonCrdtPatchOpcode.ins_arr: {
const obj = timestamp(sid, op[1]);
const ref = timestamp(sid, op[2]);
const value = op[3];
const elements: ITimestampStruct[] = [];
const length = value.length;
for (let j = 0; j < length; j++) elements.push(timestamp(sid, value[j]));
builder.insArr(obj, ref, elements);
break;
}
case JsonCrdtPatchOpcode.del: {
const obj = timestamp(sid, op[1]);
const spans = op[2];
const what: ITimespanStruct[] = [];
const length = spans.length;
for (let i = 0; i < length; i++) what.push(timespan(sid, spans[i]));
builder.del(obj, what);
break;
}
case JsonCrdtPatchOpcode.nop: {
builder.nop(op[1] || 1);
break;
}
}
}
const patch = builder.patch;
patch.meta = header[1];
return patch;
};
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