Enum

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

Version vom 01.11.2019. Aktuellste Version

Dieses Skript sollte nicht direkt installiert werden. Es handelt sich hier um eine Bibliothek für andere Skripte, welche über folgenden Befehl in den Metadaten eines Skriptes eingebunden wird // @require https://update.greasyfork.org/scripts/391854/745818/Enum.js

Du musst eine Erweiterung wie Tampermonkey, Greasemonkey oder Violentmonkey installieren, um dieses Skript zu installieren.

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 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.

Sie müssten eine Skript Manager Erweiterung installieren damit sie dieses Skript installieren können

(Ich habe schon ein Skript Manager, Lass mich es installieren!)

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      0.1
// @description  Enumeration class. Each enum propertiy has the properties "ordinal", "name" and "text".
// @author       Gerrit Höhle
// @grant        none
// ==/UserScript==

/* jslint esnext: true */
const Enum = (() => {
    const add = (thisObj, name, ordinal, text = "") => {
        text = String(text);
        const enumInstance = new class EnumProperty {
            get ordinal() { return ordinal; }
            get name() { return name; }
            get text() { return text; }
            [Symbol.toPrimitive](hint) { return (hint === "number") ? this.ordinal : this.text; }
            valueOf() { return this.ordinal; }
            toString() { return `object Enum ${this.name}`; }
        }();

        console.assert(typeof thisObj.name === "undefined", `duplicate enum [${name}]`);
        console.assert(typeof thisObj.ordinal === "undefined", `duplicate ordinal [${ordinal}] for enum [${name}]`);

        thisObj[name] = thisObj[ordinal] = enumInstance;
    };

    return class Enum {
        constructor(firstOrdinal = 0, ordinalSupplier = previousOrdinal => previousOrdinal + 1) {
            this._firstOrdinal = firstOrdinal;
            this._ordinalSupplier = ordinalSupplier;
        }

        init(enumDef = []) {
            let ordinal;
            const firstOrdinal = this._firstOrdinal;
            const ordinalSupplier = this._ordinalSupplier;

            Object.getOwnPropertyNames(this).forEach(propName => delete this[propName]);

            const ordinals = [];
            for (let enumDefObj of (Array.isArray(enumDef) ? enumDef : [ enumDef ])) {
                for (let [name, text] of Object.entries(enumDefObj)) {
                    ordinal = Number.parseInt((typeof ordinal === "undefined") ? firstOrdinal : ordinalSupplier(ordinal));
                    add(this, name, ordinal, text);
                    ordinals.push(ordinal);
                }
            }
            const enums = [ ...new Set(ordinals) ].sort().map(ordinal => this[ordinal]);

            this[Symbol.iterator] = () => enums[Symbol.iterator]();

            return Object.freeze(this);
        }
    };
})();