promise_resolver.js
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"use strict";
var util = require("./util.js");
var maybeWrapAsError = util.maybeWrapAsError;
var errors = require("./errors.js");
var TimeoutError = errors.TimeoutError;
var OperationalError = errors.OperationalError;
var haveGetters = util.haveGetters;
var es5 = require("./es5.js");
function isUntypedError(obj) {
return obj instanceof Error &&
es5.getPrototypeOf(obj) === Error.prototype;
}
var rErrorKey = /^(?:name|message|stack|cause)$/;
function wrapAsOperationalError(obj) {
var ret;
if (isUntypedError(obj)) {
ret = new OperationalError(obj);
ret.name = obj.name;
ret.message = obj.message;
ret.stack = obj.stack;
var keys = es5.keys(obj);
for (var i = 0; i < keys.length; ++i) {
var key = keys[i];
if (!rErrorKey.test(key)) {
ret[key] = obj[key];
}
}
return ret;
}
util.markAsOriginatingFromRejection(obj);
return obj;
}
function nodebackForPromise(promise) {
return function(err, value) {
if (promise === null) return;
if (err) {
var wrapped = wrapAsOperationalError(maybeWrapAsError(err));
promise._attachExtraTrace(wrapped);
promise._reject(wrapped);
} else if (arguments.length > 2) {
var $_len = arguments.length;var args = new Array($_len - 1); for(var $_i = 1; $_i < $_len; ++$_i) {args[$_i - 1] = arguments[$_i];}
promise._fulfill(args);
} else {
promise._fulfill(value);
}
promise = null;
};
}
var PromiseResolver;
if (!haveGetters) {
PromiseResolver = function (promise) {
this.promise = promise;
this.asCallback = nodebackForPromise(promise);
this.callback = this.asCallback;
};
}
else {
PromiseResolver = function (promise) {
this.promise = promise;
};
}
if (haveGetters) {
var prop = {
get: function() {
return nodebackForPromise(this.promise);
}
};
es5.defineProperty(PromiseResolver.prototype, "asCallback", prop);
es5.defineProperty(PromiseResolver.prototype, "callback", prop);
}
PromiseResolver._nodebackForPromise = nodebackForPromise;
PromiseResolver.prototype.toString = function () {
return "[object PromiseResolver]";
};
PromiseResolver.prototype.resolve =
PromiseResolver.prototype.fulfill = function (value) {
if (!(this instanceof PromiseResolver)) {
throw new TypeError("Illegal invocation, resolver resolve/reject must be called within a resolver context. Consider using the promise constructor instead.\u000a\u000a See http://goo.gl/sdkXL9\u000a");
}
this.promise._resolveCallback(value);
};
PromiseResolver.prototype.reject = function (reason) {
if (!(this instanceof PromiseResolver)) {
throw new TypeError("Illegal invocation, resolver resolve/reject must be called within a resolver context. Consider using the promise constructor instead.\u000a\u000a See http://goo.gl/sdkXL9\u000a");
}
this.promise._rejectCallback(reason);
};
PromiseResolver.prototype.progress = function (value) {
if (!(this instanceof PromiseResolver)) {
throw new TypeError("Illegal invocation, resolver resolve/reject must be called within a resolver context. Consider using the promise constructor instead.\u000a\u000a See http://goo.gl/sdkXL9\u000a");
}
this.promise._progress(value);
};
PromiseResolver.prototype.cancel = function (err) {
this.promise.cancel(err);
};
PromiseResolver.prototype.timeout = function () {
this.reject(new TimeoutError("timeout"));
};
PromiseResolver.prototype.isResolved = function () {
return this.promise.isResolved();
};
PromiseResolver.prototype.toJSON = function () {
return this.promise.toJSON();
};
module.exports = PromiseResolver;