| 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136 |
8
8
8
8
8
8
8
8
204
204
204
204
204
204
204
204
204
8
8
8
9833
9833
9833
9833
9833
9833
3222
3222
42
42
42
6611
21
21
21
6590
6590
6590
6590
6590
6590
6590
6586
6586
3328
3328
3240
3240
3240
88
73
15
3331
6553
6553
131
57
74
8
42
42
42
42
21
21
21
8
57
57
57
57
3234
57
57
8
8
204
204
204
8
24
24
8
184
180
| (function () { "use strict";
module.exports = function(Promise,
PromiseArray,
apiRejection,
tryConvertToPromise,
INTERNAL) {
var ASSERT = require("./assert.js");
var util = require("./util.js");
var tryCatch = util.tryCatch;
var errorObj = util.errorObj;
var PENDING = {};
var EMPTY_ARRAY = [];
function MappingPromiseArray(promises, fn, limit, _filter) {
this.constructor$(promises);
this._promise._setIsSpreadable();
this._promise._captureStackTrace();
this._callback = fn;
this._preservedValues = _filter === INTERNAL
? new Array(this.length())
: null;
this._limit = limit;
this._inFlight = 0;
this._queue = limit >= 1 ? [] : EMPTY_ARRAY;
this._init$(undefined, -2);
}
util.inherits(MappingPromiseArray, PromiseArray);
MappingPromiseArray.prototype._init = function () {};
MappingPromiseArray.prototype._promiseFulfilled = function (value, index) {
ASSERT((! this._isResolved()),
"!this._isResolved()");
var values = this._values;
var length = this.length();
var preservedValues = this._preservedValues;
var limit = this._limit;
if (values[index] === PENDING) {
values[index] = value;
if (limit >= 1) {
this._inFlight--;
this._drainQueue();
Iif (this._isResolved()) return;
}
} else {
if (limit >= 1 && this._inFlight >= limit) {
values[index] = value;
this._queue.push(index);
return;
}
if (preservedValues !== null) preservedValues[index] = value;
var callback = this._callback;
var receiver = this._promise._boundTo;
this._promise._pushContext();
var ret = tryCatch(callback).call(receiver, value, index, length);
this._promise._popContext();
if (ret === errorObj) return this._reject(ret.e);
var maybePromise = tryConvertToPromise(ret, this._promise);
if (maybePromise instanceof Promise) {
maybePromise = maybePromise._target();
if (maybePromise._isPending()) {
if (limit >= 1) this._inFlight++;
values[index] = PENDING;
return maybePromise._proxyPromiseArray(this, index);
} else if (maybePromise._isFulfilled()) {
ret = maybePromise._value();
} else {
return this._reject(maybePromise._reason());
}
}
values[index] = ret;
}
var totalResolved = ++this._totalResolved;
if (totalResolved >= length) {
if (preservedValues !== null) {
this._filter(values, preservedValues);
} else {
this._resolve(values);
}
}
};
MappingPromiseArray.prototype._drainQueue = function () {
var queue = this._queue;
var limit = this._limit;
var values = this._values;
while (queue.length > 0 && this._inFlight < limit) {
Iif (this._isResolved()) return;
var index = queue.pop();
this._promiseFulfilled(values[index], index);
}
};
MappingPromiseArray.prototype._filter = function (booleans, values) {
var len = values.length;
var ret = new Array(len);
var j = 0;
for (var i = 0; i < len; ++i) {
if (booleans[i]) ret[j++] = values[i];
}
ret.length = j;
this._resolve(ret);
};
MappingPromiseArray.prototype.preservedValues = function () {
return this._preservedValues;
};
function map(promises, fn, options, _filter) {
var limit = typeof options === "object" && options !== null
? options.concurrency
: 0;
limit = typeof limit === "number" &&
isFinite(limit) && limit >= 1 ? limit : 0;
return new MappingPromiseArray(promises, fn, limit, _filter);
}
Promise.prototype.map = function (fn, options) {
Iif (typeof fn !== "function") return apiRejection("fn must be a function\u000a\u000a See http://goo.gl/916lJJ\u000a");
return map(this, fn, options, null).promise();
};
Promise.map = function (promises, fn, options, _filter) {
if (typeof fn !== "function") return apiRejection("fn must be a function\u000a\u000a See http://goo.gl/916lJJ\u000a");
return map(promises, fn, options, _filter).promise();
};
};
}());
|