aaac7fed
 liuqimichale
add
|
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
|
"use strict";
module.exports = function(Promise, INTERNAL, tryConvertToPromise, debug) {
var calledBind = false;
var rejectThis = function(_, e) {
this._reject(e);
};
var targetRejected = function(e, context) {
context.promiseRejectionQueued = true;
context.bindingPromise._then(rejectThis, rejectThis, null, this, e);
};
var bindingResolved = function(thisArg, context) {
if (((this._bitField & 50397184) === 0)) {
this._resolveCallback(context.target);
}
};
var bindingRejected = function(e, context) {
if (!context.promiseRejectionQueued) this._reject(e);
};
Promise.prototype.bind = function (thisArg) {
if (!calledBind) {
calledBind = true;
Promise.prototype._propagateFrom = debug.propagateFromFunction();
Promise.prototype._boundValue = debug.boundValueFunction();
}
var maybePromise = tryConvertToPromise(thisArg);
var ret = new Promise(INTERNAL);
ret._propagateFrom(this, 1);
var target = this._target();
ret._setBoundTo(maybePromise);
if (maybePromise instanceof Promise) {
var context = {
promiseRejectionQueued: false,
promise: ret,
target: target,
bindingPromise: maybePromise
};
target._then(INTERNAL, targetRejected, undefined, ret, context);
maybePromise._then(
bindingResolved, bindingRejected, undefined, ret, context);
ret._setOnCancel(maybePromise);
} else {
ret._resolveCallback(target);
}
return ret;
};
Promise.prototype._setBoundTo = function (obj) {
if (obj !== undefined) {
this._bitField = this._bitField | 2097152;
this._boundTo = obj;
} else {
this._bitField = this._bitField & (~2097152);
}
};
Promise.prototype._isBound = function () {
return (this._bitField & 2097152) === 2097152;
};
Promise.bind = function (thisArg, value) {
return Promise.resolve(value).bind(thisArg);
};
};
|
