96 lines
3.3 KiB
JavaScript
96 lines
3.3 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.DecompressionTable = void 0;
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const JsonPackExtension_1 = require("../JsonPackExtension");
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const isSafeInteger = Number.isSafeInteger;
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class DecompressionTable {
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constructor() {
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this.table = [];
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}
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importTable(rleTable) {
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const length = rleTable.length;
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if (!length)
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return;
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const table = this.table;
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const first = rleTable[0];
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table.push(first);
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let i = 1;
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if (isSafeInteger(first)) {
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let prev = first;
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let value;
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while (i < length) {
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value = rleTable[i];
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if (isSafeInteger(value)) {
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prev = prev + value;
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table.push(prev);
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i++;
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}
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else {
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break;
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}
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}
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}
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while (i < length)
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table.push(rleTable[i++]);
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}
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getLiteral(index) {
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const table = this.table;
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return table[index];
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}
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decompress(value) {
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switch (typeof value) {
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case 'number': {
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return this.getLiteral(value);
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}
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case 'object': {
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if (!value)
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return null;
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const constructor = value.constructor;
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switch (constructor) {
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case Object: {
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const obj = value;
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const newObj = {};
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for (const key in obj)
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newObj[String(this.getLiteral(Number(key)))] = this.decompress(obj[key]);
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return newObj;
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}
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case Array: {
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const arr = value;
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const newArr = [];
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const len = arr.length;
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for (let i = 0; i < len; i++)
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newArr.push(this.decompress(arr[i]));
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return newArr;
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}
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case Map: {
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const map = value;
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const newMap = new Map();
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map.forEach((value, key) => {
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newMap.set(this.decompress(key), this.decompress(value));
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});
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return newMap;
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}
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case Set: {
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const set = value;
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const newSet = new Set();
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set.forEach((value) => {
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newSet.add(this.decompress(value));
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});
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break;
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}
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case JsonPackExtension_1.JsonPackExtension: {
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const ext = value;
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const newExt = new JsonPackExtension_1.JsonPackExtension(Number(this.getLiteral(ext.tag)), this.decompress(ext.val));
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return newExt;
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}
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}
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return value;
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}
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default: {
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return value;
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}
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}
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}
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}
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exports.DecompressionTable = DecompressionTable;
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//# sourceMappingURL=DecompressionTable.js.map
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