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73 lines
2.0 KiB
JavaScript
73 lines
2.0 KiB
JavaScript
"use strict";
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module.exports = function(Promise, INTERNAL, tryConvertToPromise) {
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var rejectThis = function(_, e) {
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this._reject(e);
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};
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var targetRejected = function(e, context) {
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context.promiseRejectionQueued = true;
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context.bindingPromise._then(rejectThis, rejectThis, null, this, e);
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};
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var bindingResolved = function(thisArg, context) {
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if (this._isPending()) {
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this._resolveCallback(context.target);
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}
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};
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var bindingRejected = function(e, context) {
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if (!context.promiseRejectionQueued) this._reject(e);
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};
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Promise.prototype.bind = function (thisArg) {
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var maybePromise = tryConvertToPromise(thisArg);
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var ret = new Promise(INTERNAL);
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ret._propagateFrom(this, 1);
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var target = this._target();
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ret._setBoundTo(maybePromise);
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if (maybePromise instanceof Promise) {
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var context = {
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promiseRejectionQueued: false,
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promise: ret,
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target: target,
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bindingPromise: maybePromise
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};
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target._then(INTERNAL, targetRejected, ret._progress, ret, context);
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maybePromise._then(
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bindingResolved, bindingRejected, ret._progress, ret, context);
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} else {
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ret._resolveCallback(target);
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}
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return ret;
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};
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Promise.prototype._setBoundTo = function (obj) {
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if (obj !== undefined) {
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this._bitField = this._bitField | 131072;
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this._boundTo = obj;
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} else {
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this._bitField = this._bitField & (~131072);
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}
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};
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Promise.prototype._isBound = function () {
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return (this._bitField & 131072) === 131072;
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};
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Promise.bind = function (thisArg, value) {
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var maybePromise = tryConvertToPromise(thisArg);
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var ret = new Promise(INTERNAL);
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ret._setBoundTo(maybePromise);
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if (maybePromise instanceof Promise) {
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maybePromise._then(function() {
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ret._resolveCallback(value);
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}, ret._reject, ret._progress, ret, null);
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} else {
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ret._resolveCallback(value);
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}
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return ret;
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};
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};
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