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- "use strict";
- module.exports =
- function(Promise, PromiseArray, tryConvertToPromise, INTERNAL, async,
- getDomain) {
- var util = require("./util");
- 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 promiseSetter = function(i) {
- return new Function("promise", "holder", " \n\
- 'use strict'; \n\
- holder.pIndex = promise; \n\
- ".replace(/Index/g, i));
- };
- var generateHolderClass = function(total) {
- var props = new Array(total);
- for (var i = 0; i < props.length; ++i) {
- props[i] = "this.p" + (i+1);
- }
- var assignment = props.join(" = ") + " = null;";
- var cancellationCode= "var promise;\n" + props.map(function(prop) {
- return " \n\
- promise = " + prop + "; \n\
- if (promise instanceof Promise) { \n\
- promise.cancel(); \n\
- } \n\
- ";
- }).join("\n");
- var passedArguments = props.join(", ");
- var name = "Holder$" + total;
- var code = "return function(tryCatch, errorObj, Promise, async) { \n\
- 'use strict'; \n\
- function [TheName](fn) { \n\
- [TheProperties] \n\
- this.fn = fn; \n\
- this.asyncNeeded = true; \n\
- this.now = 0; \n\
- } \n\
- \n\
- [TheName].prototype._callFunction = function(promise) { \n\
- promise._pushContext(); \n\
- var ret = tryCatch(this.fn)([ThePassedArguments]); \n\
- promise._popContext(); \n\
- if (ret === errorObj) { \n\
- promise._rejectCallback(ret.e, false); \n\
- } else { \n\
- promise._resolveCallback(ret); \n\
- } \n\
- }; \n\
- \n\
- [TheName].prototype.checkFulfillment = function(promise) { \n\
- var now = ++this.now; \n\
- if (now === [TheTotal]) { \n\
- if (this.asyncNeeded) { \n\
- async.invoke(this._callFunction, this, promise); \n\
- } else { \n\
- this._callFunction(promise); \n\
- } \n\
- \n\
- } \n\
- }; \n\
- \n\
- [TheName].prototype._resultCancelled = function() { \n\
- [CancellationCode] \n\
- }; \n\
- \n\
- return [TheName]; \n\
- }(tryCatch, errorObj, Promise, async); \n\
- ";
- code = code.replace(/\[TheName\]/g, name)
- .replace(/\[TheTotal\]/g, total)
- .replace(/\[ThePassedArguments\]/g, passedArguments)
- .replace(/\[TheProperties\]/g, assignment)
- .replace(/\[CancellationCode\]/g, cancellationCode);
- return new Function("tryCatch", "errorObj", "Promise", "async", code)
- (tryCatch, errorObj, Promise, async);
- };
- var holderClasses = [];
- var thenCallbacks = [];
- var promiseSetters = [];
- for (var i = 0; i < 8; ++i) {
- holderClasses.push(generateHolderClass(i + 1));
- thenCallbacks.push(thenCallback(i + 1));
- promiseSetters.push(promiseSetter(i + 1));
- }
- 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 <= 8 && canEvaluate) {
- var ret = new Promise(INTERNAL);
- ret._captureStackTrace();
- var HolderClass = holderClasses[last - 1];
- var holder = new HolderClass(fn);
- var callbacks = thenCallbacks;
- for (var i = 0; i < last; ++i) {
- var maybePromise = tryConvertToPromise(arguments[i], ret);
- if (maybePromise instanceof Promise) {
- maybePromise = maybePromise._target();
- var bitField = maybePromise._bitField;
- ;
- if (((bitField & 50397184) === 0)) {
- maybePromise._then(callbacks[i], reject,
- undefined, ret, holder);
- promiseSetters[i](maybePromise, holder);
- holder.asyncNeeded = false;
- } else if (((bitField & 33554432) !== 0)) {
- callbacks[i].call(ret,
- maybePromise._value(), holder);
- } else if (((bitField & 16777216) !== 0)) {
- ret._reject(maybePromise._reason());
- } else {
- ret._cancel();
- }
- } else {
- callbacks[i].call(ret, maybePromise, holder);
- }
- }
- if (!ret._isFateSealed()) {
- if (holder.asyncNeeded) {
- var domain = getDomain();
- if (domain !== null) {
- holder.fn = util.domainBind(domain, holder.fn);
- }
- }
- ret._setAsyncGuaranteed();
- ret._setOnCancel(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;
- };
- };
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