58 lines
1.4 KiB
JavaScript
58 lines
1.4 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.Levels = void 0;
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class Levels {
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constructor() {
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this.level_ = [];
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}
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push(level) {
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this.level_.push(level);
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}
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pop() {
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return this.level_.pop();
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}
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peek() {
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return this.level_[this.level_.length - 1] || null;
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}
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indexOf(element) {
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const last = this.peek();
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return !last ? null : last.indexOf(element);
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}
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find(pred) {
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const last = this.peek();
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if (!last) {
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return null;
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}
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for (let i = 0, l = last.length; i < l; i++) {
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if (pred(last[i])) {
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return last[i];
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}
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}
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return null;
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}
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get(index) {
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const last = this.peek();
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return !last || index < 0 || index >= last.length ? null : last[index];
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}
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depth() {
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return this.level_.length;
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}
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clone() {
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const levels = new Levels();
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levels.level_ = this.level_.slice(0);
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return levels;
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}
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toString() {
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let str = '';
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for (let i = 0, level; (level = this.level_[i]); i++) {
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str +=
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'\n' +
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level.map(function (x) {
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return x.toString();
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});
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}
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return str;
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}
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}
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exports.Levels = Levels;
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