Enum

Enumeration class. Each enum propertiy has the properties "ordinal", "name" and "text".

Script này sẽ không được không được cài đặt trực tiếp. Nó là một thư viện cho các script khác để bao gồm các chỉ thị meta // @require https://update.greasyfork.org/scripts/391854/746956/Enum.js

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(Tôi đã có Trình quản lý tập lệnh người dùng, hãy cài đặt nó!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Enum
// @namespace    hoehleg.userscripts.private
// @version      0.3
// @description  Enumeration class. Each enum propertiy has the properties "ordinal", "name" and "text".
// @author       Gerrit Höhle
// @grant        none
// ==/UserScript==

/* jslint esnext: true */
const Enum = class EnumBase {

    constructor({ name, ordinal, text } = {}) {
        if (new.target === EnumBase) {
            throw TypeError("Instantiation of abstract enum class");
        }

        if (typeof text !== "undefined") {
            text = String(text);
        }

        Object.assign(this, {
            get ordinal() { return ordinal; },
            get name() { return name; },
            get text() { return text; }
        });
    }

    valueOf() { 
        return this.ordinal; 
    }

    toString() { 
        return (typeof this.text === "undefined") ? this.name : this.text;
    }

    static init(enumDef = [], firstOrdinal = 0, ordinalSupplier = previousOrdinal => previousOrdinal + 1) {
        if (Object.isFrozen(this)) {
            throw TypeError("Reinitialization of finalized enum class");
        }

        let ordinal;
        const ordinals = [];
        for (let enumDefObj of (Array.isArray(enumDef) ? enumDef : [ enumDef ])) {
            if (typeof enumDefObj !== 'object') {
                enumDefObj = { [enumDefObj]: undefined };
            }
            for (let [name, text] of Object.entries(enumDefObj)) {
                ordinal = Number.parseInt((typeof ordinal === "undefined") ? firstOrdinal : ordinalSupplier(ordinal));
                console.assert(typeof this[name] === "undefined", `duplicate enum [${name}]`);
                console.assert(typeof this[ordinal] === "undefined", `duplicate ordinal [${ordinal}] for enum [${name}]`);

                this[name] = new this({ ordinal, name, text });
                Object.defineProperty(this, ordinal, { 
                    value: this[name] 
                });

                ordinals.push(ordinal);
            }
        }

        const enums = ordinals.sort().map(ordinal => this[ordinal]);
        Object.defineProperty(this, Symbol.iterator, { value: () => enums[Symbol.iterator]() });

        return Object.freeze(this);
    }
};