104 lines
2.2 KiB
JavaScript
104 lines
2.2 KiB
JavaScript
// Copyright IBM Corp. 2012,2016. All Rights Reserved.
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// Node module: loopback-datasource-juggler
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// This file is licensed under the MIT License.
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// License text available at https://opensource.org/licenses/MIT
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var util = require('util');
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var Any = require('./types').Types.Any;
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module.exports = List;
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function List(items, itemType, parent) {
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var list = this;
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if (!(list instanceof List)) {
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return new List(items, itemType, parent);
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}
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if (typeof items === 'string') {
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try {
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items = JSON.parse(items);
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} catch (e) {
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var err = new Error(util.format('could not create List from JSON string: %j', items));
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err.statusCode = 400;
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throw err;
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}
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}
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var arr = [];
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arr.__proto__ = List.prototype;
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items = items || [];
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if (!Array.isArray(items)) {
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var err = new Error(util.format('Items must be an array: %j', items));
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err.statusCode = 400;
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throw err;
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}
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if(!itemType) {
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itemType = items[0] && items[0].constructor;
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}
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if (Array.isArray(itemType)) {
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itemType = itemType[0];
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}
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if(itemType === Array) {
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itemType = Any;
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}
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Object.defineProperty(arr, 'itemType', {
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writable: true,
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enumerable: false,
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value: itemType
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});
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if (parent) {
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Object.defineProperty(arr, 'parent', {
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writable: true,
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enumerable: false,
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value: parent
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});
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}
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items.forEach(function (item, i) {
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if (itemType && !(item instanceof itemType)) {
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arr[i] = itemType(item);
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} else {
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arr[i] = item;
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}
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});
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return arr;
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}
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util.inherits(List, Array);
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var _push = List.prototype.push;
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List.prototype.push = function (obj) {
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var item = this.itemType && (obj instanceof this.itemType) ? obj : this.itemType(obj);
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_push.call(this, item);
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return item;
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};
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List.prototype.toObject = function (onlySchema, removeHidden, removeProtected) {
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var items = [];
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this.forEach(function (item) {
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if (item && typeof item === 'object' && item.toObject) {
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items.push(item.toObject(onlySchema, removeHidden, removeProtected));
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} else {
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items.push(item);
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}
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});
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return items;
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};
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List.prototype.toJSON = function () {
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return this.toObject(true);
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};
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List.prototype.toString = function () {
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return JSON.stringify(this.toJSON());
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};
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