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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 | 14x 14x 14x 14x 82321x 82321x 14x 14229x 14229x 10943x 10943x 3286x 14x 8912x 8912x 8912x 8912x 8912x 8912x 8912x 8912x 8912x 48885x 3682x 3682x 3x 3679x 301x 3378x 45203x 1340x 43863x 5908x 37955x 4x 37951x 4859x 33092x 1374x 31718x 3964x 27754x 2778x 24976x 6356x 17476x 6356x 6356x 18620x 2x 2x 2x 2x 18618x 7384x 7384x 11234x 2817x 2817x 8417x 2853x 8141x 2853x 2853x 5564x 21x 21x 5543x 4385x 14229x 4385x 1158x 1158x 1158x 1158x 1158x 8912x | import * as operations from '../../operations';
import {type ITimespanStruct, type ITimestampStruct, Timestamp} from '../../clock';
import {JsonCrdtPatchOpcode, SESSION} from '../../constants';
import {toBase64} from '@jsonjoy.com/base64/lib/toBase64';
import type {Patch} from '../../Patch';
import type * as types from './types';
const timestamp = (sid: number, ts: ITimestampStruct): types.CompactCodecTimestamp => {
const tsSessionId = ts.sid;
return tsSessionId === sid ? ts.time : [tsSessionId, ts.time];
};
const timespan = (sid: number, span: ITimespanStruct): types.CompactCodecTimespan => {
const ts = timestamp(sid, span);
if (Array.isArray(ts)) {
ts.push(span.span);
return ts;
}
return [ts, span.span];
};
/**
* Encodes a patch into a compact binary format into a JavaScript array.
*
* @param patch The patch to encode.
* @returns The encoded patch as a JavaScript POJO.
*/
export const encode = (patch: Patch): types.CompactCodecPatch => {
const id = patch.getId();
Iif (!id) throw new Error('PATCH_EMPTY');
const sid = id.sid;
const time = id.time;
const header: types.CompactCodecPatch[0] = sid === SESSION.SERVER ? [time] : [[sid, time]];
const meta = patch.meta;
if (meta !== undefined) header.push(meta);
const res: types.CompactCodecPatch = [header];
for (const op of patch.ops) {
if (op instanceof operations.NewConOp) {
const val = op.val;
if (val instanceof Timestamp) {
res.push([JsonCrdtPatchOpcode.new_con, timestamp(sid, val), true]);
} else if (val === undefined) {
res.push([JsonCrdtPatchOpcode.new_con]);
} else {
res.push([JsonCrdtPatchOpcode.new_con, val]);
}
} else if (op instanceof operations.NewValOp) {
res.push([JsonCrdtPatchOpcode.new_val]);
} else if (op instanceof operations.NewObjOp) {
res.push([JsonCrdtPatchOpcode.new_obj]);
} else if (op instanceof operations.NewVecOp) {
res.push([JsonCrdtPatchOpcode.new_vec]);
} else if (op instanceof operations.NewStrOp) {
res.push([JsonCrdtPatchOpcode.new_str]);
} else if (op instanceof operations.NewBinOp) {
res.push([JsonCrdtPatchOpcode.new_bin]);
} else if (op instanceof operations.NewArrOp) {
res.push([JsonCrdtPatchOpcode.new_arr]);
} else if (op instanceof operations.InsValOp) {
res.push([JsonCrdtPatchOpcode.ins_val, timestamp(sid, op.obj), timestamp(sid, op.val)]);
} else if (op instanceof operations.InsObjOp) {
const tuples: types.CompactCodecInsObjOperation[2] = [];
for (const [key, value] of op.data) tuples.push([key, timestamp(sid, value)]);
const operation: types.CompactCodecInsObjOperation = [
JsonCrdtPatchOpcode.ins_obj,
timestamp(sid, op.obj),
tuples,
];
res.push(operation);
} else if (op instanceof operations.InsVecOp) {
const tuples: types.CompactCodecInsVecOperation[2] = [];
for (const [key, value] of op.data) tuples.push([key, timestamp(sid, value)]);
const operation: types.CompactCodecInsVecOperation = [
JsonCrdtPatchOpcode.ins_vec,
timestamp(sid, op.obj),
tuples,
];
res.push(operation);
} else if (op instanceof operations.InsStrOp) {
const operation: types.CompactCodecInsStrOperation = [
JsonCrdtPatchOpcode.ins_str,
timestamp(sid, op.obj),
timestamp(sid, op.ref),
op.data,
];
res.push(operation);
} else if (op instanceof operations.InsBinOp) {
const operation: types.CompactCodecInsBinOperation = [
JsonCrdtPatchOpcode.ins_bin,
timestamp(sid, op.obj),
timestamp(sid, op.ref),
toBase64(op.data),
];
res.push(operation);
} else if (op instanceof operations.InsArrOp) {
const elements: types.CompactCodecInsArrOperation[3] = [];
for (const element of op.data) elements.push(timestamp(sid, element));
const operation: types.CompactCodecInsArrOperation = [
JsonCrdtPatchOpcode.ins_arr,
timestamp(sid, op.obj),
timestamp(sid, op.ref),
elements,
];
res.push(operation);
} else if (op instanceof operations.UpdArrOp) {
const operation: types.CompactCodecUpdArrOperation = [
JsonCrdtPatchOpcode.upd_arr,
timestamp(sid, op.obj),
timestamp(sid, op.ref),
timestamp(sid, op.val),
];
res.push(operation);
} else if (op instanceof operations.DelOp) {
const operation: types.CompactCodecDelOperation = [
JsonCrdtPatchOpcode.del,
timestamp(sid, op.obj),
op.what.map((span) => timespan(sid, span)),
];
res.push(operation);
} else if (op instanceof operations.NopOp) {
const operation: types.CompactCodecNopOperation = [JsonCrdtPatchOpcode.nop];
const len = op.len;
if (len > 1) operation.push(len);
res.push(operation);
}
}
return res;
};
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