'use strict';
// This file contains then/promise specific extensions that are only useful
// for node.js interop
var Promise = require('./core.js');
var asap = require('asap');
module.exports = Promise;
/* Static Functions */
Promise.denodeify = function (fn, argumentCount) {
argumentCount = argumentCount || Infinity;
return function () {
var self = this;
var args = Array.prototype.slice.call(arguments);
return new Promise(function (resolve, reject) {
while (args.length && args.length > argumentCount) {
args.pop();
}
args.push(function (err, res) {
if (err) reject(err);
else resolve(res);
})
var res = fn.apply(self, args);
if (res &&
(
typeof res === 'object' ||
typeof res === 'function'
) &&
typeof res.then === 'function'
) {
resolve(res);
}
})
}
}
Promise.nodeify = function (fn) {
return function () {
var args = Array.prototype.slice.call(arguments);
var callback =
typeof args[args.length - 1] === 'function' ? args.pop() : null;
var ctx = this;
try {
return fn.apply(this, arguments).nodeify(callback, ctx);
} catch (ex) {
Iif (callback === null || typeof callback == 'undefined') {
return new Promise(function (resolve, reject) {
reject(ex);
});
} else {
asap(function () {
callback.call(ctx, ex);
})
}
}
}
}
Promise.prototype.nodeify = function (callback, ctx) {
if (typeof callback != 'function') return this;
this.then(function (value) {
asap(function () {
callback.call(ctx, null, value);
});
}, function (err) {
asap(function () {
callback.call(ctx, err);
});
});
}
|