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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 | 12x 12x 12x 12x 12x 12x 12x 151x 1600x 1600x 1600x 1600x 1600x 1600x 1600x 1600x 1598x 1598x 1598x 64883x 1600x 151x 64883x 64883x 64883x 64883x 64883x 64883x 64883x 42767x 42125x 21334x 21333x 7873x 4142x 218856x 218856x 64883x 64883x 770x 70x 22116x 22116x 22116x 22116x 22116x 1x 1x 22115x 22115x 22116x 642x 642x 642x 642x 642x 642x 20791x 20791x 20791x 20791x 20791x 20791x 20791x 151x 57512x 57512x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 13460x 13460x 13460x 13460x 13460x 97289x 97289x 44822x 13460x 3731x 3731x 3731x 3731x 3731x 52318x 52318x 52318x 52318x 52318x 13452x 3731x 4142x 4142x 4142x 4142x 4142x 4363x 4363x 4363x 4363x 4363x 3994x 5132x 4142x | import {type ITimestampStruct, Timestamp} from '../../../../json-crdt-patch/clock';
import {ClockTable} from '../../../../json-crdt-patch/codec/clock/ClockTable';
import {CrdtWriter} from '../../../../json-crdt-patch/util/binary/CrdtWriter';
import {CborEncoder} from '@jsonjoy.com/json-pack/lib/cbor/CborEncoder';
import type {Model} from '../../../model';
import * as nodes from '../../../nodes';
import {CRDT_MAJOR_OVERLAY} from '../../structural/binary/constants';
import type {IndexedFields, FieldName} from './types';
export class Encoder {
public readonly enc: CborEncoder<CrdtWriter>;
protected clockTable?: ClockTable;
constructor(writer?: CrdtWriter) {
this.enc = new CborEncoder<CrdtWriter>(writer || new CrdtWriter());
}
public encode(doc: Model<any>, clockTable: ClockTable = ClockTable.from(doc.clock)): IndexedFields {
this.clockTable = clockTable;
const writer = this.enc.writer;
writer.reset();
clockTable.write(writer);
const encodedClock = writer.flush();
const rootValueId = doc.root.val;
const result: IndexedFields = {
c: encodedClock,
};
if (rootValueId.sid !== 0) {
writer.reset();
this.ts(rootValueId);
result.r = writer.flush();
}
// biome-ignore lint: index is not iterable
doc.index.forEach(({v: node}) => this.onNode(result, node));
return result;
}
protected readonly onNode = (result: IndexedFields, node: nodes.JsonNode) => {
const id = node.id;
const sid = id.sid;
const time = id.time;
const sidIndex = this.clockTable!.getBySid(sid).index;
const field = (sidIndex.toString(36) + '_' + time.toString(36)) as FieldName;
result[field] = this.encodeNode(node);
};
public encodeNode(node: nodes.JsonNode): Uint8Array {
if (node instanceof nodes.ConNode) return this.encodeCon(node);
else if (node instanceof nodes.ValNode) return this.encodeVal(node);
else if (node instanceof nodes.ObjNode) return this.encodeObj(node);
else if (node instanceof nodes.VecNode) return this.encodeVec(node);
else if (node instanceof nodes.StrNode) return this.encodeStr(node);
else if (node instanceof nodes.BinNode) return this.encodeBin(node);
else if (node instanceof nodes.ArrNode) return this.encodeArr(node);
throw new Error('UNKNOWN_NODE');
}
protected ts(id: ITimestampStruct): void {
const index = this.clockTable!.getBySid(id.sid).index;
this.enc.writer.id(index, id.time);
}
protected writeTL(majorOverlay: CRDT_MAJOR_OVERLAY, length: number): void {
const writer = this.enc.writer;
if (length < 24) writer.u8(majorOverlay + length);
else if (length <= 0xff) writer.u16(((majorOverlay + 24) << 8) + length);
else if (length <= 0xffff) writer.u8u16(majorOverlay + 25, length);
else Ewriter.u8u32(majorOverlay + 26, length);
}
public encodeCon(node: nodes.ConNode): Uint8Array {
const encoder = this.enc;
const writer = encoder.writer;
const val = node.val;
writer.reset();
if (val instanceof Timestamp) {
this.writeTL(CRDT_MAJOR_OVERLAY.CON, 1);
this.ts(val as Timestamp);
} else {
this.writeTL(CRDT_MAJOR_OVERLAY.CON, 0);
encoder.writeAny(val);
}
return writer.flush();
}
public encodeVal(node: nodes.ValNode): Uint8Array {
const writer = this.enc.writer;
const child = node.node();
writer.reset();
this.writeTL(CRDT_MAJOR_OVERLAY.VAL, 0);
this.ts(child.id);
return writer.flush();
}
public encodeObj(node: nodes.ObjNode): Uint8Array {
const encoder = this.enc;
const writer = encoder.writer;
writer.reset();
const keys = node.keys;
this.writeTL(CRDT_MAJOR_OVERLAY.OBJ, keys.size);
keys.forEach(this.onObjKey);
return writer.flush();
}
private readonly onObjKey = (value: ITimestampStruct, key: string) => {
this.enc.writeStr(key);
this.ts(value);
};
public encodeVec(node: nodes.VecNode): Uint8Array {
const writer = this.enc.writer;
writer.reset();
const length = node.elements.length;
this.writeTL(CRDT_MAJOR_OVERLAY.VEC, length);
for (let i = 0; i < length; i++) {
const childId = node.val(i);
Iif (!childId) writer.u8(0);
else {
writer.u8(1);
this.ts(childId);
}
}
return writer.flush();
}
public encodeStr(node: nodes.StrNode): Uint8Array {
const encoder = this.enc;
const writer = encoder.writer;
writer.reset();
this.writeTL(CRDT_MAJOR_OVERLAY.STR, node.count);
for (let chunk = node.first(); chunk; chunk = node.next(chunk)) {
this.ts(chunk.id);
if (chunk.del) encoder.writeUInteger(chunk.span);
else encoder.writeStr(chunk.data!);
}
return writer.flush();
}
public encodeBin(node: nodes.BinNode): Uint8Array {
const encoder = this.enc;
const writer = encoder.writer;
writer.reset();
this.writeTL(CRDT_MAJOR_OVERLAY.BIN, node.count);
for (let chunk = node.first(); chunk; chunk = node.next(chunk)) {
const length = chunk.span;
const deleted = chunk.del;
this.ts(chunk.id);
writer.b1vu56(~~deleted as 0 | 1, length);
if (deleted) continue;
writer.buf(chunk.data!, length);
}
return writer.flush();
}
public encodeArr(node: nodes.ArrNode): Uint8Array {
const encoder = this.enc;
const writer = encoder.writer;
writer.reset();
this.writeTL(CRDT_MAJOR_OVERLAY.ARR, node.count);
for (let chunk = node.first(); chunk; chunk = node.next(chunk)) {
const length = chunk.span;
const deleted = chunk.del;
this.ts(chunk.id);
writer.b1vu56(~~deleted as 0 | 1, length);
if (deleted) continue;
const data = chunk.data;
for (let i = 0; i < length; i++) this.ts(data![i]);
}
return writer.flush();
}
}
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