82 lines
1.8 KiB
JavaScript
82 lines
1.8 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = void 0;
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const SPLIT = '__@field_split__';
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/**
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* Convert name path into string to fast the fetch speed of Map.
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*/
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function normalize(namePath) {
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return namePath.map(cell => `${typeof cell}:${cell}`)
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// Magic split
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.join(SPLIT);
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}
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/**
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* NameMap like a `Map` but accepts `string[]` as key.
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*/
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class NameMap {
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kvs = new Map();
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set(key, value) {
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this.kvs.set(normalize(key), value);
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}
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get(key) {
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return this.kvs.get(normalize(key));
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}
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getAsPrefix(key) {
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const normalizedKey = normalize(key);
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const normalizedPrefix = normalizedKey + SPLIT;
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const results = [];
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const current = this.kvs.get(normalizedKey);
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if (current !== undefined) {
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results.push(current);
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}
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this.kvs.forEach((value, itemNormalizedKey) => {
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if (itemNormalizedKey.startsWith(normalizedPrefix)) {
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results.push(value);
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}
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});
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return results;
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}
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update(key, updater) {
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const origin = this.get(key);
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const next = updater(origin);
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if (!next) {
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this.delete(key);
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} else {
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this.set(key, next);
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}
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}
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delete(key) {
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this.kvs.delete(normalize(key));
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}
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// Since we only use this in test, let simply realize this
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map(callback) {
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return [...this.kvs.entries()].map(([key, value]) => {
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const cells = key.split(SPLIT);
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return callback({
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key: cells.map(cell => {
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const [, type, unit] = cell.match(/^([^:]*):(.*)$/);
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return type === 'number' ? Number(unit) : unit;
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}),
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value
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});
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});
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}
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toJSON() {
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const json = {};
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this.map(({
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key,
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value
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}) => {
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json[key.join('.')] = value;
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return null;
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});
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return json;
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}
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}
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var _default = exports.default = NameMap; |