You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
108 lines
3.8 KiB
JavaScript
108 lines
3.8 KiB
JavaScript
"use strict";
|
|
module.exports =
|
|
function(Promise, PromiseArray, tryConvertToPromise, INTERNAL) {
|
|
var util = require("./util.js");
|
|
var canEvaluate = util.canEvaluate;
|
|
var tryCatch = util.tryCatch;
|
|
var errorObj = util.errorObj;
|
|
var reject;
|
|
|
|
if (!false) {
|
|
if (canEvaluate) {
|
|
var thenCallback = function(i) {
|
|
return new Function("value", "holder", " \n\
|
|
'use strict'; \n\
|
|
holder.pIndex = value; \n\
|
|
holder.checkFulfillment(this); \n\
|
|
".replace(/Index/g, i));
|
|
};
|
|
|
|
var caller = function(count) {
|
|
var values = [];
|
|
for (var i = 1; i <= count; ++i) values.push("holder.p" + i);
|
|
return new Function("holder", " \n\
|
|
'use strict'; \n\
|
|
var callback = holder.fn; \n\
|
|
return callback(values); \n\
|
|
".replace(/values/g, values.join(", ")));
|
|
};
|
|
var thenCallbacks = [];
|
|
var callers = [undefined];
|
|
for (var i = 1; i <= 5; ++i) {
|
|
thenCallbacks.push(thenCallback(i));
|
|
callers.push(caller(i));
|
|
}
|
|
|
|
var Holder = function(total, fn) {
|
|
this.p1 = this.p2 = this.p3 = this.p4 = this.p5 = null;
|
|
this.fn = fn;
|
|
this.total = total;
|
|
this.now = 0;
|
|
};
|
|
|
|
Holder.prototype.callers = callers;
|
|
Holder.prototype.checkFulfillment = function(promise) {
|
|
var now = this.now;
|
|
now++;
|
|
var total = this.total;
|
|
if (now >= total) {
|
|
var handler = this.callers[total];
|
|
promise._pushContext();
|
|
var ret = tryCatch(handler)(this);
|
|
promise._popContext();
|
|
if (ret === errorObj) {
|
|
promise._rejectCallback(ret.e, false, true);
|
|
} else {
|
|
promise._resolveCallback(ret);
|
|
}
|
|
} else {
|
|
this.now = now;
|
|
}
|
|
};
|
|
|
|
var reject = function (reason) {
|
|
this._reject(reason);
|
|
};
|
|
}
|
|
}
|
|
|
|
Promise.join = function () {
|
|
var last = arguments.length - 1;
|
|
var fn;
|
|
if (last > 0 && typeof arguments[last] === "function") {
|
|
fn = arguments[last];
|
|
if (!false) {
|
|
if (last < 6 && canEvaluate) {
|
|
var ret = new Promise(INTERNAL);
|
|
ret._captureStackTrace();
|
|
var holder = new Holder(last, fn);
|
|
var callbacks = thenCallbacks;
|
|
for (var i = 0; i < last; ++i) {
|
|
var maybePromise = tryConvertToPromise(arguments[i], ret);
|
|
if (maybePromise instanceof Promise) {
|
|
maybePromise = maybePromise._target();
|
|
if (maybePromise._isPending()) {
|
|
maybePromise._then(callbacks[i], reject,
|
|
undefined, ret, holder);
|
|
} else if (maybePromise._isFulfilled()) {
|
|
callbacks[i].call(ret,
|
|
maybePromise._value(), holder);
|
|
} else {
|
|
ret._reject(maybePromise._reason());
|
|
}
|
|
} else {
|
|
callbacks[i].call(ret, maybePromise, holder);
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
var $_len = arguments.length;var args = new Array($_len); for(var $_i = 0; $_i < $_len; ++$_i) {args[$_i] = arguments[$_i];}
|
|
if (fn) args.pop();
|
|
var ret = new PromiseArray(args).promise();
|
|
return fn !== undefined ? ret.spread(fn) : ret;
|
|
};
|
|
|
|
};
|