| "use strict"; |
| module.exports = function( |
| Promise, PromiseArray, tryConvertToPromise, apiRejection) { |
| var util = require("./util"); |
| var isObject = util.isObject; |
| var es5 = require("./es5"); |
| var Es6Map; |
| if (typeof Map === "function") Es6Map = Map; |
| |
| var mapToEntries = (function() { |
| var index = 0; |
| var size = 0; |
| |
| function extractEntry(value, key) { |
| this[index] = value; |
| this[index + size] = key; |
| index++; |
| } |
| |
| return function mapToEntries(map) { |
| size = map.size; |
| index = 0; |
| var ret = new Array(map.size * 2); |
| map.forEach(extractEntry, ret); |
| return ret; |
| }; |
| })(); |
| |
| var entriesToMap = function(entries) { |
| var ret = new Es6Map(); |
| var length = entries.length / 2 | 0; |
| for (var i = 0; i < length; ++i) { |
| var key = entries[length + i]; |
| var value = entries[i]; |
| ret.set(key, value); |
| } |
| return ret; |
| }; |
| |
| function PropertiesPromiseArray(obj) { |
| var isMap = false; |
| var entries; |
| if (Es6Map !== undefined && obj instanceof Es6Map) { |
| entries = mapToEntries(obj); |
| isMap = true; |
| } else { |
| var keys = es5.keys(obj); |
| var len = keys.length; |
| entries = new Array(len * 2); |
| for (var i = 0; i < len; ++i) { |
| var key = keys[i]; |
| entries[i] = obj[key]; |
| entries[i + len] = key; |
| } |
| } |
| this.constructor$(entries); |
| this._isMap = isMap; |
| this._init$(undefined, isMap ? -6 : -3); |
| } |
| util.inherits(PropertiesPromiseArray, PromiseArray); |
| |
| PropertiesPromiseArray.prototype._init = function () {}; |
| |
| PropertiesPromiseArray.prototype._promiseFulfilled = function (value, index) { |
| this._values[index] = value; |
| var totalResolved = ++this._totalResolved; |
| if (totalResolved >= this._length) { |
| var val; |
| if (this._isMap) { |
| val = entriesToMap(this._values); |
| } else { |
| val = {}; |
| var keyOffset = this.length(); |
| for (var i = 0, len = this.length(); i < len; ++i) { |
| val[this._values[i + keyOffset]] = this._values[i]; |
| } |
| } |
| this._resolve(val); |
| return true; |
| } |
| return false; |
| }; |
| |
| PropertiesPromiseArray.prototype.shouldCopyValues = function () { |
| return false; |
| }; |
| |
| PropertiesPromiseArray.prototype.getActualLength = function (len) { |
| return len >> 1; |
| }; |
| |
| function props(promises) { |
| var ret; |
| var castValue = tryConvertToPromise(promises); |
| |
| if (!isObject(castValue)) { |
| return apiRejection("cannot await properties of a non-object\u000a\u000a See http://goo.gl/MqrFmX\u000a"); |
| } else if (castValue instanceof Promise) { |
| ret = castValue._then( |
| Promise.props, undefined, undefined, undefined, undefined); |
| } else { |
| ret = new PropertiesPromiseArray(castValue).promise(); |
| } |
| |
| if (castValue instanceof Promise) { |
| ret._propagateFrom(castValue, 2); |
| } |
| return ret; |
| } |
| |
| Promise.prototype.props = function () { |
| return props(this); |
| }; |
| |
| Promise.props = function (promises) { |
| return props(promises); |
| }; |
| }; |