corrade-nucleus-nucleons – Blame information for rev 24
?pathlinks?
Rev | Author | Line No. | Line |
---|---|---|---|
20 | office | 1 | "use strict"; |
2 | module.exports = function(Promise, |
||
3 | PromiseArray, |
||
4 | apiRejection, |
||
5 | tryConvertToPromise, |
||
6 | INTERNAL, |
||
7 | debug) { |
||
8 | var getDomain = Promise._getDomain; |
||
9 | var util = require("./util"); |
||
10 | var tryCatch = util.tryCatch; |
||
11 | var errorObj = util.errorObj; |
||
12 | var async = Promise._async; |
||
13 | |||
14 | function MappingPromiseArray(promises, fn, limit, _filter) { |
||
15 | this.constructor$(promises); |
||
16 | this._promise._captureStackTrace(); |
||
17 | var domain = getDomain(); |
||
18 | this._callback = domain === null ? fn : util.domainBind(domain, fn); |
||
19 | this._preservedValues = _filter === INTERNAL |
||
20 | ? new Array(this.length()) |
||
21 | : null; |
||
22 | this._limit = limit; |
||
23 | this._inFlight = 0; |
||
24 | this._queue = []; |
||
25 | async.invoke(this._asyncInit, this, undefined); |
||
26 | } |
||
27 | util.inherits(MappingPromiseArray, PromiseArray); |
||
28 | |||
29 | MappingPromiseArray.prototype._asyncInit = function() { |
||
30 | this._init$(undefined, -2); |
||
31 | }; |
||
32 | |||
33 | MappingPromiseArray.prototype._init = function () {}; |
||
34 | |||
35 | MappingPromiseArray.prototype._promiseFulfilled = function (value, index) { |
||
36 | var values = this._values; |
||
37 | var length = this.length(); |
||
38 | var preservedValues = this._preservedValues; |
||
39 | var limit = this._limit; |
||
40 | |||
41 | if (index < 0) { |
||
42 | index = (index * -1) - 1; |
||
43 | values[index] = value; |
||
44 | if (limit >= 1) { |
||
45 | this._inFlight--; |
||
46 | this._drainQueue(); |
||
47 | if (this._isResolved()) return true; |
||
48 | } |
||
49 | } else { |
||
50 | if (limit >= 1 && this._inFlight >= limit) { |
||
51 | values[index] = value; |
||
52 | this._queue.push(index); |
||
53 | return false; |
||
54 | } |
||
55 | if (preservedValues !== null) preservedValues[index] = value; |
||
56 | |||
57 | var promise = this._promise; |
||
58 | var callback = this._callback; |
||
59 | var receiver = promise._boundValue(); |
||
60 | promise._pushContext(); |
||
61 | var ret = tryCatch(callback).call(receiver, value, index, length); |
||
62 | var promiseCreated = promise._popContext(); |
||
63 | debug.checkForgottenReturns( |
||
64 | ret, |
||
65 | promiseCreated, |
||
66 | preservedValues !== null ? "Promise.filter" : "Promise.map", |
||
67 | promise |
||
68 | ); |
||
69 | if (ret === errorObj) { |
||
70 | this._reject(ret.e); |
||
71 | return true; |
||
72 | } |
||
73 | |||
74 | var maybePromise = tryConvertToPromise(ret, this._promise); |
||
75 | if (maybePromise instanceof Promise) { |
||
76 | maybePromise = maybePromise._target(); |
||
77 | var bitField = maybePromise._bitField; |
||
78 | ; |
||
79 | if (((bitField & 50397184) === 0)) { |
||
80 | if (limit >= 1) this._inFlight++; |
||
81 | values[index] = maybePromise; |
||
82 | maybePromise._proxy(this, (index + 1) * -1); |
||
83 | return false; |
||
84 | } else if (((bitField & 33554432) !== 0)) { |
||
85 | ret = maybePromise._value(); |
||
86 | } else if (((bitField & 16777216) !== 0)) { |
||
87 | this._reject(maybePromise._reason()); |
||
88 | return true; |
||
89 | } else { |
||
90 | this._cancel(); |
||
91 | return true; |
||
92 | } |
||
93 | } |
||
94 | values[index] = ret; |
||
95 | } |
||
96 | var totalResolved = ++this._totalResolved; |
||
97 | if (totalResolved >= length) { |
||
98 | if (preservedValues !== null) { |
||
99 | this._filter(values, preservedValues); |
||
100 | } else { |
||
101 | this._resolve(values); |
||
102 | } |
||
103 | return true; |
||
104 | } |
||
105 | return false; |
||
106 | }; |
||
107 | |||
108 | MappingPromiseArray.prototype._drainQueue = function () { |
||
109 | var queue = this._queue; |
||
110 | var limit = this._limit; |
||
111 | var values = this._values; |
||
112 | while (queue.length > 0 && this._inFlight < limit) { |
||
113 | if (this._isResolved()) return; |
||
114 | var index = queue.pop(); |
||
115 | this._promiseFulfilled(values[index], index); |
||
116 | } |
||
117 | }; |
||
118 | |||
119 | MappingPromiseArray.prototype._filter = function (booleans, values) { |
||
120 | var len = values.length; |
||
121 | var ret = new Array(len); |
||
122 | var j = 0; |
||
123 | for (var i = 0; i < len; ++i) { |
||
124 | if (booleans[i]) ret[j++] = values[i]; |
||
125 | } |
||
126 | ret.length = j; |
||
127 | this._resolve(ret); |
||
128 | }; |
||
129 | |||
130 | MappingPromiseArray.prototype.preservedValues = function () { |
||
131 | return this._preservedValues; |
||
132 | }; |
||
133 | |||
134 | function map(promises, fn, options, _filter) { |
||
135 | if (typeof fn !== "function") { |
||
136 | return apiRejection("expecting a function but got " + util.classString(fn)); |
||
137 | } |
||
138 | |||
139 | var limit = 0; |
||
140 | if (options !== undefined) { |
||
141 | if (typeof options === "object" && options !== null) { |
||
142 | if (typeof options.concurrency !== "number") { |
||
143 | return Promise.reject( |
||
144 | new TypeError("'concurrency' must be a number but it is " + |
||
145 | util.classString(options.concurrency))); |
||
146 | } |
||
147 | limit = options.concurrency; |
||
148 | } else { |
||
149 | return Promise.reject(new TypeError( |
||
150 | "options argument must be an object but it is " + |
||
151 | util.classString(options))); |
||
152 | } |
||
153 | } |
||
154 | limit = typeof limit === "number" && |
||
155 | isFinite(limit) && limit >= 1 ? limit : 0; |
||
156 | return new MappingPromiseArray(promises, fn, limit, _filter).promise(); |
||
157 | } |
||
158 | |||
159 | Promise.prototype.map = function (fn, options) { |
||
160 | return map(this, fn, options, null); |
||
161 | }; |
||
162 | |||
163 | Promise.map = function (promises, fn, options, _filter) { |
||
164 | return map(promises, fn, options, _filter); |
||
165 | }; |
||
166 | |||
167 | |||
168 | }; |