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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 | 161x 161x 161x 161x 2931045x 2931045x 2931045x 2931045x 2931045x 2931045x 2931045x 2931045x 2931045x 2931045x 2931045x 2931045x 750443x 750443x 707900x 614682x 614682x 614682x 614682x 93218x 93218x 93218x 720248x 720248x 14x 14x 5795x 161x 158657x 157671x 149203x 149203x 3493736x 149203x 158657x 5023x 1543319x 2021729x 2513x | import {type ITimestampStruct, tick} from '../../../json-crdt-patch/clock';
import {AbstractRga, type Chunk} from '../rga/AbstractRga';
import {next} from 'sonic-forest/lib/util';
import type {JsonNode} from '..';
/**
* @ignore
* @category CRDT Node
*/
export class StrChunk implements Chunk<string> {
public readonly id: ITimestampStruct;
public span: number;
public del: boolean;
public data: string;
public len: number;
public p: StrChunk | undefined;
public l: StrChunk | undefined;
public r: StrChunk | undefined;
public p2: StrChunk | undefined;
public l2: StrChunk | undefined;
public r2: StrChunk | undefined;
public s: StrChunk | undefined;
constructor(id: ITimestampStruct, span: number, str: string) {
this.id = id;
this.span = span;
this.len = str ? span : 0;
this.del = !str;
this.p = undefined;
this.l = undefined;
this.r = undefined;
this.p2 = undefined;
this.l2 = undefined;
this.r2 = undefined;
this.s = undefined;
this.data = str;
}
public merge(str: string) {
this.data += str;
this.span = this.data.length;
}
public split(ticks: number): StrChunk {
if (!this.del) {
const chunk = new StrChunk(tick(this.id, ticks), this.span - ticks, this.data.slice(ticks));
this.data = this.data.slice(0, ticks);
this.span = ticks;
return chunk;
}
const chunk = new StrChunk(tick(this.id, ticks), this.span - ticks, '');
this.span = ticks;
return chunk;
}
public delete(): void {
this.del = true;
this.data = '';
}
public clone(): StrChunk {
const chunk = new StrChunk(this.id, this.span, this.data);
return chunk;
}
public view(): string {
return this.data;
}
}
/**
* Represents the `str` type in JSON CRDT. The `str` type is a RGA (Replicated
* Growable Array) of UTF-16 code units.
*
* @category CRDT Node
*/
export class StrNode<T extends string = string> extends AbstractRga<string> implements JsonNode<string> {
// ----------------------------------------------------------------- JsonNode
/** @ignore */
public children() {}
/** @ignore */
public child() {
return undefined;
}
/** @ignore */
public container(): JsonNode | undefined {
return undefined;
}
/** @ignore */
private _view: string = '';
public view(): T {
if (this._view) return this._view as T;
let str = '';
for (let chunk = this.first(); chunk; chunk = next(chunk))
// TODO: Check if this optimization improves performance: if (!chunk.del) str += chunk.data;
str += chunk.data;
return (this._view = str) as T;
}
/** @ignore */
public api: undefined | unknown = undefined;
public name(): string {
return 'str';
}
// -------------------------------------------------------------- AbstractRga
/** @ignore */
public createChunk(id: ITimestampStruct, str: string | undefined): StrChunk {
return new StrChunk(id, str ? str.length : 0, str || '');
}
/** @ignore */
protected onChange(): void {
this._view = '';
}
protected toStringName(): string {
return this.name();
}
}
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