186 lines
5.1 KiB
JavaScript
186 lines
5.1 KiB
JavaScript
|
"use strict";
|
||
|
module.exports = function(Promise, INTERNAL, tryConvertToPromise,
|
||
|
apiRejection, Proxyable) {
|
||
|
var util = require("./util");
|
||
|
var isArray = util.isArray;
|
||
|
|
||
|
function toResolutionValue(val) {
|
||
|
switch(val) {
|
||
|
case -2: return [];
|
||
|
case -3: return {};
|
||
|
case -6: return new Map();
|
||
|
}
|
||
|
}
|
||
|
|
||
|
function PromiseArray(values) {
|
||
|
var promise = this._promise = new Promise(INTERNAL);
|
||
|
if (values instanceof Promise) {
|
||
|
promise._propagateFrom(values, 3);
|
||
|
}
|
||
|
promise._setOnCancel(this);
|
||
|
this._values = values;
|
||
|
this._length = 0;
|
||
|
this._totalResolved = 0;
|
||
|
this._init(undefined, -2);
|
||
|
}
|
||
|
util.inherits(PromiseArray, Proxyable);
|
||
|
|
||
|
PromiseArray.prototype.length = function () {
|
||
|
return this._length;
|
||
|
};
|
||
|
|
||
|
PromiseArray.prototype.promise = function () {
|
||
|
return this._promise;
|
||
|
};
|
||
|
|
||
|
PromiseArray.prototype._init = function init(_, resolveValueIfEmpty) {
|
||
|
var values = tryConvertToPromise(this._values, this._promise);
|
||
|
if (values instanceof Promise) {
|
||
|
values = values._target();
|
||
|
var bitField = values._bitField;
|
||
|
;
|
||
|
this._values = values;
|
||
|
|
||
|
if (((bitField & 50397184) === 0)) {
|
||
|
this._promise._setAsyncGuaranteed();
|
||
|
return values._then(
|
||
|
init,
|
||
|
this._reject,
|
||
|
undefined,
|
||
|
this,
|
||
|
resolveValueIfEmpty
|
||
|
);
|
||
|
} else if (((bitField & 33554432) !== 0)) {
|
||
|
values = values._value();
|
||
|
} else if (((bitField & 16777216) !== 0)) {
|
||
|
return this._reject(values._reason());
|
||
|
} else {
|
||
|
return this._cancel();
|
||
|
}
|
||
|
}
|
||
|
values = util.asArray(values);
|
||
|
if (values === null) {
|
||
|
var err = apiRejection(
|
||
|
"expecting an array or an iterable object but got " + util.classString(values)).reason();
|
||
|
this._promise._rejectCallback(err, false);
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
if (values.length === 0) {
|
||
|
if (resolveValueIfEmpty === -5) {
|
||
|
this._resolveEmptyArray();
|
||
|
}
|
||
|
else {
|
||
|
this._resolve(toResolutionValue(resolveValueIfEmpty));
|
||
|
}
|
||
|
return;
|
||
|
}
|
||
|
this._iterate(values);
|
||
|
};
|
||
|
|
||
|
PromiseArray.prototype._iterate = function(values) {
|
||
|
var len = this.getActualLength(values.length);
|
||
|
this._length = len;
|
||
|
this._values = this.shouldCopyValues() ? new Array(len) : this._values;
|
||
|
var result = this._promise;
|
||
|
var isResolved = false;
|
||
|
var bitField = null;
|
||
|
for (var i = 0; i < len; ++i) {
|
||
|
var maybePromise = tryConvertToPromise(values[i], result);
|
||
|
|
||
|
if (maybePromise instanceof Promise) {
|
||
|
maybePromise = maybePromise._target();
|
||
|
bitField = maybePromise._bitField;
|
||
|
} else {
|
||
|
bitField = null;
|
||
|
}
|
||
|
|
||
|
if (isResolved) {
|
||
|
if (bitField !== null) {
|
||
|
maybePromise.suppressUnhandledRejections();
|
||
|
}
|
||
|
} else if (bitField !== null) {
|
||
|
if (((bitField & 50397184) === 0)) {
|
||
|
maybePromise._proxy(this, i);
|
||
|
this._values[i] = maybePromise;
|
||
|
} else if (((bitField & 33554432) !== 0)) {
|
||
|
isResolved = this._promiseFulfilled(maybePromise._value(), i);
|
||
|
} else if (((bitField & 16777216) !== 0)) {
|
||
|
isResolved = this._promiseRejected(maybePromise._reason(), i);
|
||
|
} else {
|
||
|
isResolved = this._promiseCancelled(i);
|
||
|
}
|
||
|
} else {
|
||
|
isResolved = this._promiseFulfilled(maybePromise, i);
|
||
|
}
|
||
|
}
|
||
|
if (!isResolved) result._setAsyncGuaranteed();
|
||
|
};
|
||
|
|
||
|
PromiseArray.prototype._isResolved = function () {
|
||
|
return this._values === null;
|
||
|
};
|
||
|
|
||
|
PromiseArray.prototype._resolve = function (value) {
|
||
|
this._values = null;
|
||
|
this._promise._fulfill(value);
|
||
|
};
|
||
|
|
||
|
PromiseArray.prototype._cancel = function() {
|
||
|
if (this._isResolved() || !this._promise._isCancellable()) return;
|
||
|
this._values = null;
|
||
|
this._promise._cancel();
|
||
|
};
|
||
|
|
||
|
PromiseArray.prototype._reject = function (reason) {
|
||
|
this._values = null;
|
||
|
this._promise._rejectCallback(reason, false);
|
||
|
};
|
||
|
|
||
|
PromiseArray.prototype._promiseFulfilled = function (value, index) {
|
||
|
this._values[index] = value;
|
||
|
var totalResolved = ++this._totalResolved;
|
||
|
if (totalResolved >= this._length) {
|
||
|
this._resolve(this._values);
|
||
|
return true;
|
||
|
}
|
||
|
return false;
|
||
|
};
|
||
|
|
||
|
PromiseArray.prototype._promiseCancelled = function() {
|
||
|
this._cancel();
|
||
|
return true;
|
||
|
};
|
||
|
|
||
|
PromiseArray.prototype._promiseRejected = function (reason) {
|
||
|
this._totalResolved++;
|
||
|
this._reject(reason);
|
||
|
return true;
|
||
|
};
|
||
|
|
||
|
PromiseArray.prototype._resultCancelled = function() {
|
||
|
if (this._isResolved()) return;
|
||
|
var values = this._values;
|
||
|
this._cancel();
|
||
|
if (values instanceof Promise) {
|
||
|
values.cancel();
|
||
|
} else {
|
||
|
for (var i = 0; i < values.length; ++i) {
|
||
|
if (values[i] instanceof Promise) {
|
||
|
values[i].cancel();
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
};
|
||
|
|
||
|
PromiseArray.prototype.shouldCopyValues = function () {
|
||
|
return true;
|
||
|
};
|
||
|
|
||
|
PromiseArray.prototype.getActualLength = function (len) {
|
||
|
return len;
|
||
|
};
|
||
|
|
||
|
return PromiseArray;
|
||
|
};
|