Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 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 | 170x 170x 170x 170x 242415x 242415x 242415x 67510x 67510x 53704x 401625x 401625x 392802x 392802x 67686x 184066x 3638x 3638x 48739x 48739x 34690x 14525x 44845x 7050x 242415x 242415x 137052x 137052x 137052x 137052x 136805x 136805x 136805x 136805x 379452x 379452x 2x 2x 379450x 379450x 341099x 341099x 38351x 136805x 242415x 10786x 5393x 5393x 16230x 16228x 16228x | import {printTree} from 'tree-dump/lib/printTree';
import {compare, type ITimestampStruct, printTs} from '../../../json-crdt-patch/clock';
import {ConNode} from '../const/ConNode';
import type {JsonNode, JsonNodeView} from '..';
import type {Model} from '../../model';
import type {Printable} from 'tree-dump/lib/types';
/**
* Represents a `obj` JSON CRDT node, which is a Last-write-wins (LWW) object.
* It is a map of string keys to LWW registers. The value of each register is
* a reference to another JSON CRDT node.
*
* @category CRDT Node
*/
export class ObjNode<Value extends Record<string, JsonNode> = Record<string, JsonNode>>
implements JsonNode<JsonNodeView<Value>>, Printable
{
/**
* @ignore
*/
public readonly keys: Map<string, ITimestampStruct> = new Map();
constructor(
/**
* @ignore
*/
protected readonly doc: Model<any>,
public readonly id: ITimestampStruct,
) {}
/**
* Retrieves a JSON CRDT node at the given key.
*
* @param key A key of the object.
* @returns JSON CRDT node at the given key, if any.
*/
public get<K extends keyof Value>(key: K): undefined | Value[K] {
const id = this.keys.get(key as string);
if (!id) return undefined;
return this.doc.index.get(id) as Value[K];
}
/**
* Rewrites object key.
*
* @param key Object key to set.
* @param id ID of the contents of the key.
* @returns Returns old entry ID, if any.
* @ignore
*/
public put(key: string, id: ITimestampStruct): undefined | ITimestampStruct {
const currentId = this.keys.get(key);
if (currentId && compare(currentId, id) >= 0) return;
this.keys.set(key, id);
return currentId;
}
/**
* Iterate over all key-value pairs in the object.
*
* @param callback Callback to call for each key-value pair.
*/
public nodes(callback: (node: JsonNode, key: string) => void) {
const index = this.doc.index;
this.keys.forEach((id, key) => callback(index.get(id)!, key));
}
public forEach(callback: (key: string, value: JsonNode) => void) {
const index = this.doc.index;
this.keys.forEach((id, key) => {
const value = index.get(id);
if (!value || (value instanceof ConNode && value.val === void 0)) return;
callback(key, value);
});
}
// ----------------------------------------------------------------- JsonNode
/**
* @ignore
*/
public children(callback: (node: JsonNode) => void) {
const index = this.doc.index;
this.keys.forEach((id, key) => callback(index.get(id)!));
}
/**
* @ignore
*/
public child() {
return undefined;
}
/**
* @ignore
*/
public container(): JsonNode | undefined {
return this;
}
/**
* @ignore
*/
private _tick: number = 0;
/**
* @ignore
*/
private _view = {} as JsonNodeView<Value>;
/**
* @ignore
*/
public view(): JsonNodeView<Value> {
const doc = this.doc;
const tick = doc.clock.time + doc.tick;
const _view = this._view;
if (this._tick === tick) return _view;
const view = {} as JsonNodeView<Value>;
const index = doc.index;
let useCache = true;
this.keys.forEach((id, key) => {
const valueNode = index.get(id);
if (!valueNode) {
useCache = false;
return;
}
const value = valueNode.view();
if (value !== undefined) {
if (_view[key] !== value) useCache = false;
(<any>view)[key] = value;
} else if (_view[key] !== undefined) useCache = false;
});
return useCache ? _view : ((this._tick = tick), (this._view = view));
}
/**
* @ignore
*/
public api: undefined | unknown = undefined;
public name(): string {
return 'obj';
}
// ---------------------------------------------------------------- Printable
public toString(tab: string = ''): string {
const header = this.name() + ' ' + printTs(this.id);
return (
header +
printTree(
tab,
[...this.keys.entries()]
.filter(([, id]) => !!this.doc.index.get(id))
.map(
([key, id]) =>
(tab) =>
JSON.stringify(key) + printTree(tab + ' ', [(tab) => this.doc.index.get(id)!.toString(tab)]),
),
)
);
}
}
|