index.js

/**
 * MIT Licensed
 *
 * Authors:
 * 汤尧 <tangyao@taobao.com>
 */

'use strict';

function Enums(items) {
 items = items || [];
 if (items.constructor.name === 'Enums') {
 items = items.enums;
 }
 this.enums = [];
 if (!Array.isArray(items)) {
 items = [items];
 }
 for (var i = 0, len = items.length; i < len; i++) {
 var item = items[i];
 if (typeof item === 'string') {
 item = { name: item };
 }
 item.ordinal = i;
 Object.defineProperty(item, 'eql', {
 configurable: true,
 enumerable: false,
 value: function(that) {
 if (!that || !that.name) {
 return false;
 }
 return (this.$name !== undefined && that.$name !== undefined && this.$name !== null && that.$name !== null && this.$name === that.$name) || this.name === that.name;
 },
 });
 this[item.$name || item.name] = item;
 this.enums.push(item);
 }
}

Enums.prototype.getByCode = function(code) {
 return this.getBy('code', code);
};

Enums.prototype.getBy = function(name, val) {
 var enums = this.enums;
 for (var i = 0, len = enums.length; i < len; i++) {
 var item = enums[i];
 if (item[name] === val) {
 return item;
 }
 }
 return null;
};

Enums.prototype.values = function() {
 return this.enums;
};

module.exports = Enums;