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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 | 64x 64x 64x 64x 64x 64x 64x 64x 64x 64x 64x 64x 64x 64x 10989x 10989x 10989x 10989x 14471x 14471x 14471x 14471x 14471x 14471x 14471x 14471x 14471x 14471x 14471x 14471x 14471x 14471x 14471x 14471x 14471x 14471x 14471x 14471x 14471x 14471x 14471x 1206x 1159x 1159x 1159x 1159x 1159x 1159x 1159x 1159x 1159x 192x 789x 58x 567x 567x 567x 567x 567x 567x 567x 567x 567x 582x 2690x 2690x 2690x 2690x 2679x 2679x 6778x 6778x 6778x 6778x 6778x 19096x 19096x 19096x 6366x 6778x 2260x 2260x 2260x 18856x 21965x 41564x 84x 50607x 10989x 10989x 115840x 115840x 17186x 17186x 194465x 194465x 145406x 49059x 115840x 115840x 141889x 141889x 115840x | import {AvlMap} from 'sonic-forest/lib/avl/AvlMap'; import {printTree} from 'tree-dump/lib/printTree'; import {PersistedSlice} from './PersistedSlice'; import {Timespan, compare, tss} from '../../../json-crdt-patch/clock'; import {updateRga} from '../../../json-crdt/hash'; import {CONST, updateNum} from '../../../json-hash/hash'; import {SliceHeaderShift, SliceStacking, SliceTupleIndex} from './constants'; import {MarkerSlice} from './MarkerSlice'; import {VecNode} from '../../../json-crdt/nodes'; import {Chars} from '../constants'; import {Anchor} from '../rga/constants'; import {UndEndIterator, type UndEndNext} from '../../../util/iterator'; import * as schema from './schema'; import type {Range} from '../rga/Range'; import type {Slice, SliceType} from './types'; import type {ITimespanStruct, ITimestampStruct} from '../../../json-crdt-patch/clock'; import type {Stateful} from '../types'; import type {Printable} from 'tree-dump/lib/types'; import type {ArrChunk, ArrNode} from '../../../json-crdt/nodes'; import type {AbstractRga} from '../../../json-crdt/nodes/rga'; import type {Peritext} from '../Peritext'; export class Slices<T = string> implements Stateful, Printable { private list = new AvlMap<ITimestampStruct, PersistedSlice<T>>(compare); protected readonly rga: AbstractRga<T>; constructor( /** The text RGA. */ protected readonly txt: Peritext<T>, /** The `arr` node, used as a set, where slices are stored. */ public readonly set: ArrNode, ) { this.rga = txt.str as unknown as AbstractRga<T>; } public ins< S extends PersistedSlice<T>, K extends new ( ...args: ConstructorParameters<typeof PersistedSlice<T>> ) => S, >( range: Range<T>, stacking: SliceStacking, type: SliceType, data?: unknown, Klass: K = stacking === SliceStacking.Marker ? <any>MarkerSlice : PersistedSlice, ): S { const slicesModel = this.set.doc; const set = this.set; const api = slicesModel.api; const builder = api.builder; const stepId = builder.vec(); const start = range.start.clone(); const end = range.end.clone(); stacking = stacking & 0b111; const header = (stacking << SliceHeaderShift.Stacking) + ((start.anchor & 0b1) << SliceHeaderShift.X1Anchor) + ((end.anchor & 0b1) << SliceHeaderShift.X2Anchor); const headerId = builder.con(header); const x1Id = builder.con(start.id); const x2Id = builder.con(compare(start.id, end.id) === 0 ? 0 : end.id); const typeId: ITimestampStruct = schema.type(type).build(builder); const tupleKeysUpdate: [key: number, value: ITimestampStruct][] = [ [SliceTupleIndex.Header, headerId], [SliceTupleIndex.X1, x1Id], [SliceTupleIndex.X2, x2Id], [SliceTupleIndex.Type, typeId], ]; if (data !== undefined) tupleKeysUpdate.push([SliceTupleIndex.Data, builder.json(data)]); builder.insVec(stepId, tupleKeysUpdate); const chunkId = builder.insArr(set.id, set.id, [stepId]); // TODO: Consider using `s` schema here. api.apply(); const tuple = slicesModel.index.get(stepId) as VecNode; const chunk = set.findById(chunkId)!; // TODO: Need to check if split slice text was deleted const slice = new Klass(slicesModel, this.txt, chunk, tuple, stacking, start, end); this.list.set(chunk.id, slice); return slice; } public insMarker(range: Range<T>, type: SliceType, data?: unknown | ITimestampStruct): MarkerSlice<T> { return this.ins(range, SliceStacking.Marker, type, data) as MarkerSlice<T>; } public insMarkerAfter( after: ITimestampStruct, type: SliceType, data?: unknown, separator: string = Chars.BlockSplitSentinel, ): MarkerSlice<T> { // TODO: test condition when cursors is at absolute or relative starts const txt = this.txt; const api = txt.model.api; const builder = api.builder; /** * We skip one clock cycle to prevent Block-wise RGA from merging adjacent * characters. We want the marker chunk to always be its own distinct chunk. */ builder.nop(1); // TODO: Handle case when marker is inserted at the abs start, prevent abs start/end inserts. const textId = builder.insStr(txt.str.id, after, separator); api.apply(); const point = txt.point(textId, Anchor.Before); const range = txt.range(point, point.clone()); return this.insMarker(range, type, data); } public insStack(range: Range<T>, type: SliceType, data?: unknown | ITimestampStruct): PersistedSlice<T> { return this.ins(range, SliceStacking.Many, type, data); } public insOne(range: Range<T>, type: SliceType, data?: unknown | ITimestampStruct): PersistedSlice<T> { return this.ins(range, SliceStacking.One, type, data); } public insErase(range: Range<T>, type: SliceType, data?: unknown | ITimestampStruct): PersistedSlice<T> { return this.ins(range, SliceStacking.Erase, type, data); } protected unpack(chunk: ArrChunk): PersistedSlice<T> { const txt = this.txt; const model = this.set.doc; const tupleId = chunk.data ? chunk.data[0] : undefined; Iif (!tupleId) throw new Error('SLICE_NOT_FOUND'); const tuple = model.index.get(tupleId); Iif (!(tuple instanceof VecNode)) throw new Error('NOT_TUPLE'); let slice = PersistedSlice.deserialize<T>(model, txt, chunk, tuple); if (slice.isSplit()) slice = new MarkerSlice<T>(model, txt, chunk, tuple, slice.stacking, slice.start, slice.end); return slice; } public get(id: ITimestampStruct): PersistedSlice<T> | undefined { return this.list.get(id); } public del(id: ITimestampStruct): void { this.list.del(id); const set = this.set; const api = set.doc.api; if (!set.findById(id)) return; // TODO: Is it worth checking if the slice is already deleted? api.builder.del(set.id, [tss(id.sid, id.time, 1)]); api.apply(); } public delSlices(slices: Iterable<Slice<T>>): boolean { const set = this.set; const doc = set.doc; const api = doc.api; const spans: ITimespanStruct[] = []; for (const slice of slices) { if (slice instanceof PersistedSlice) { const id = slice.id; if (!set.findById(id)) continue; spans.push(new Timespan(id.sid, id.time, 1)); } } if (!spans.length) return false; api.builder.del(this.set.id, spans); api.apply(); return true; } public size(): number { return this.list._size; } /** * @todo Rename to `each0`. */ public iterator0(): UndEndNext<PersistedSlice<T>> { const iterator = this.list.iterator0(); return () => iterator()?.v; } public each(): UndEndIterator<PersistedSlice<T>> { return new UndEndIterator<PersistedSlice<T>>(this.iterator0()); } public forEach(callback: (item: PersistedSlice<T>) => void): void { // biome-ignore lint: list is not iterable this.list.forEach((node) => callback(node.v)); } // ----------------------------------------------------------------- Stateful private _topologyHash: number = 0; public hash: number = 0; public refresh(): number { const topologyHash = updateRga(CONST.START_STATE, this.set); if (topologyHash !== this._topologyHash) { this._topologyHash = topologyHash; let chunk: ArrChunk | undefined; for (const iterator = this.set.iterator(); (chunk = iterator()); ) { const item = this.list.get(chunk.id); if (chunk.del) { if (item) this.list.del(chunk.id); } else { if (!item) this.list.set(chunk.id, this.unpack(chunk)); } } } let hash: number = topologyHash; // biome-ignore lint: slices is not iterable this.list.forEach(({v: item}) => { item.refresh(); hash = updateNum(hash, item.hash); }); return (this.hash = hash); } // ---------------------------------------------------------------- Printable public toStringName(): string { return 'Slices'; } public toString(tab: string = ''): string { return ( this.toStringName() + printTree( tab, [...this.list.entries()].map( ({v}) => (tab) => v.toString(tab), ), ) ); } } |