77 lines
2.4 KiB
JavaScript
77 lines
2.4 KiB
JavaScript
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"use strict";
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module.exports = function(Promise, PromiseArray) {
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var util = require("./util.js");
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var async = require("./async.js");
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var tryCatch = util.tryCatch;
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var errorObj = util.errorObj;
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Promise.prototype.progressed = function (handler) {
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return this._then(undefined, undefined, handler, undefined, undefined);
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};
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Promise.prototype._progress = function (progressValue) {
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if (this._isFollowingOrFulfilledOrRejected()) return;
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this._target()._progressUnchecked(progressValue);
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};
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Promise.prototype._progressHandlerAt = function (index) {
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return index === 0
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? this._progressHandler0
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: this[(index << 2) + index - 5 + 2];
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};
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Promise.prototype._doProgressWith = function (progression) {
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var progressValue = progression.value;
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var handler = progression.handler;
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var promise = progression.promise;
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var receiver = progression.receiver;
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var ret = tryCatch(handler).call(receiver, progressValue);
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if (ret === errorObj) {
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if (ret.e != null &&
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ret.e.name !== "StopProgressPropagation") {
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var trace = util.canAttachTrace(ret.e)
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? ret.e : new Error(util.toString(ret.e));
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promise._attachExtraTrace(trace);
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promise._progress(ret.e);
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}
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} else if (ret instanceof Promise) {
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ret._then(promise._progress, null, null, promise, undefined);
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} else {
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promise._progress(ret);
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}
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};
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Promise.prototype._progressUnchecked = function (progressValue) {
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var len = this._length();
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var progress = this._progress;
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for (var i = 0; i < len; i++) {
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var handler = this._progressHandlerAt(i);
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var promise = this._promiseAt(i);
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if (!(promise instanceof Promise)) {
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var receiver = this._receiverAt(i);
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if (typeof handler === "function") {
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handler.call(receiver, progressValue, promise);
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} else if (receiver instanceof PromiseArray &&
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!receiver._isResolved()) {
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receiver._promiseProgressed(progressValue, promise);
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}
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continue;
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}
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if (typeof handler === "function") {
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async.invoke(this._doProgressWith, this, {
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handler: handler,
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promise: promise,
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receiver: this._receiverAt(i),
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value: progressValue
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});
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} else {
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async.invoke(progress, promise, progressValue);
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}
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}
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};
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};
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