debug-server-next/dist/public/front_end/core/common/CharacterIdMap.js

Dev server for hippy-core.

// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/* eslint-disable rulesdir/no_underscored_properties */
export class CharacterIdMap {
    elementToCharacter;
    characterToElement;
    charCode;
    constructor() {
        this.elementToCharacter = new Map();
        this.characterToElement = new Map();
        this.charCode = 33;
    }
    toChar(object) {
        let character = this.elementToCharacter.get(object);
        if (!character) {
            if (this.charCode >= 0xFFFF) {
                throw new Error('CharacterIdMap ran out of capacity!');
            }
            character = String.fromCharCode(this.charCode++);
            this.elementToCharacter.set(object, character);
            this.characterToElement.set(character, object);
        }
        return character;
    }
    fromChar(character) {
        const object = this.characterToElement.get(character);
        if (object === undefined) {
            return null;
        }
        return object;
    }
}