timers.js
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"use strict";
module.exports = function(Promise, INTERNAL) {
var util = require("./util.js");
var TimeoutError = Promise.TimeoutError;
var afterTimeout = function (promise, message) {
if (!promise.isPending()) return;
if (typeof message !== "string") {
message = "operation timed out";
}
var err = new TimeoutError(message);
util.markAsOriginatingFromRejection(err);
promise._attachExtraTrace(err);
promise._cancel(err);
};
var afterValue = function(value) { return delay(+this).thenReturn(value); };
var delay = Promise.delay = function (value, ms) {
if (ms === undefined) {
ms = value;
value = undefined;
var ret = new Promise(INTERNAL);
setTimeout(function() { ret._fulfill(); }, ms);
return ret;
}
ms = +ms;
return Promise.resolve(value)._then(afterValue, null, null, ms, undefined);
};
Promise.prototype.delay = function (ms) {
return delay(this, ms);
};
function successClear(value) {
var handle = this;
if (handle instanceof Number) handle = +handle;
clearTimeout(handle);
return value;
}
function failureClear(reason) {
var handle = this;
if (handle instanceof Number) handle = +handle;
clearTimeout(handle);
throw reason;
}
Promise.prototype.timeout = function (ms, message) {
ms = +ms;
var ret = this.then().cancellable();
ret._cancellationParent = this;
var handle = setTimeout(function timeoutTimeout() {
afterTimeout(ret, message);
}, ms);
return ret._then(successClear, failureClear, undefined, handle, undefined);
};
};