106 lines
1.9 KiB
JavaScript
106 lines
1.9 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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class IdentifierGenerator {
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constructor() {
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// u 被框架占用了，不提供 u 开头的变量名
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this._chars = 'abcdefghijklmnopqrstvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
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this._nextIds = [0];
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}
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next() {
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const r = [];
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for (const char of this._nextIds) {
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r.unshift(this._chars[char]);
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}
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this._increment();
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const id = r.join('');
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if (keywords.includes(id)) {
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return this.next();
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}
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return id;
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}
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_increment() {
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for (let i = 0; i < this._nextIds.length; i++) {
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const val = ++this._nextIds[i];
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if (val >= this._chars.length) {
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this._nextIds[i] = 0;
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}
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else {
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return;
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}
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}
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this._nextIds.push(0);
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}
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*[Symbol.iterator]() {
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while (true) {
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yield this.next();
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}
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}
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}
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exports.default = IdentifierGenerator;
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const keywords = [
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'abstract',
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'arguments',
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'await',
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'boolean',
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'break',
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'byte',
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'case',
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'catch',
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'char',
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'class',
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'const',
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'continue',
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'debugger',
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'default',
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'delete',
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'do',
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'double',
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'else',
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'enum',
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'eval',
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'export',
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'extends',
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'false',
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'final',
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'finally',
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'float',
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'for',
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'function',
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'goto',
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'if',
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'implements',
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'import',
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'in',
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'instanceof',
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'int',
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'interface',
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'let',
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'long',
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'native',
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'new',
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'null',
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'package',
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'private',
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'protected',
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'public',
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'return',
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'short',
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'static',
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'super',
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'switch',
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'synchronized',
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'this',
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'throw',
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'throws',
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'transient',
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'true',
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'try',
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'typeof',
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'var',
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'void',
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'volatile',
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'while',
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'with',
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'yield',
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];
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