9184 lines
230 KiB
JavaScript
9184 lines
230 KiB
JavaScript
(function(global, factory) {
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/*jshint -W030 */
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'use strict';
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typeof exports === 'object' && typeof module !== 'undefined'
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? factory(exports)
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: typeof define === 'function' && define.amd
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? define(['exports'], factory)
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: global.async
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? factory((global.neo_async = global.neo_async || {}))
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: factory((global.async = global.async || {}));
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})(this, function(exports) {
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'use strict';
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var noop = function noop() {};
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var throwError = function throwError() {
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throw new Error('Callback was already called.');
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};
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var DEFAULT_TIMES = 5;
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var DEFAULT_INTERVAL = 0;
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var obj = 'object';
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var func = 'function';
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var isArray = Array.isArray;
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var nativeKeys = Object.keys;
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var nativePush = Array.prototype.push;
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var iteratorSymbol = typeof Symbol === func && Symbol.iterator;
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var nextTick, asyncNextTick, asyncSetImmediate;
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createImmediate();
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/**
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* @memberof async
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* @namespace each
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* @param {Array|Object} collection
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* @param {Function} iterator
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* @param {Function} callback
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* @example
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*
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* // array
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* var order = [];
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* var array = [1, 3, 2];
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* var iterator = function(num, done) {
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* setTimeout(function() {
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* order.push(num);
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* done();
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* }, num * 10);
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* };
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* async.each(array, iterator, function(err, res) {
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* console.log(res); // undefined
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* console.log(order); // [1, 2, 3]
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* });
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*
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* @example
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*
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* // array with index
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* var order = [];
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* var array = [1, 3, 2];
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* var iterator = function(num, index, done) {
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* setTimeout(function() {
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* order.push([num, index]);
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* done();
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* }, num * 10);
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* };
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* async.each(array, iterator, function(err, res) {
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* console.log(res); // undefined
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* console.log(order); // [[1, 0], [2, 2], [3, 1]]
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* });
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*
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* @example
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*
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* // object
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* var order = [];
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* var object = { a: 1, b: 3, c: 2 };
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* var iterator = function(num, done) {
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* setTimeout(function() {
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* order.push(num);
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* done();
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* }, num * 10);
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* };
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* async.each(object, iterator, function(err, res) {
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* console.log(res); // undefined
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* console.log(order); // [1, 2, 3]
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* });
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*
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* @example
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*
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* // object with key
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* var order = [];
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* var object = { a: 1, b: 3, c: 2 };
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* var iterator = function(num, key, done) {
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* setTimeout(function() {
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* order.push([num, key]);
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* done();
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* }, num * 10);
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* };
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* async.each(object, iterator, function(err, res) {
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* console.log(res); // undefined
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* console.log(order); // [[1, 'a'], [2, 'c'], [3, 'b']]
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* });
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*
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* @example
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*
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* // break
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* var order = [];
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* var array = [1, 3, 2];
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* var iterator = function(num, done) {
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* setTimeout(function() {
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* order.push(num);
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* done(null, num !== 2);
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* }, num * 10);
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* };
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* async.each(array, iterator, function(err, res) {
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* console.log(res); // undefined
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* console.log(order); // [1, 2]
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* });
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*
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*/
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var each = createEach(arrayEach, baseEach, symbolEach);
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/**
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* @memberof async
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* @namespace map
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* @param {Array|Object} collection
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* @param {Function} iterator
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* @param {Function} callback
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* @example
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*
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* // array
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* var order = [];
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* var array = [1, 3, 2];
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* var iterator = function(num, done) {
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* setTimeout(function() {
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* order.push(num);
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* done(null, num);
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* }, num * 10);
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* };
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* async.map(array, iterator, function(err, res) {
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* console.log(res); // [1, 3, 2];
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* console.log(order); // [1, 2, 3]
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* });
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*
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* @example
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*
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* // array with index
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* var order = [];
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* var array = [1, 3, 2];
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* var iterator = function(num, index, done) {
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* setTimeout(function() {
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* order.push([num, index]);
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* done(null, num);
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* }, num * 10);
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* };
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* async.map(array, iterator, function(err, res) {
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* console.log(res); // [1, 3, 2]
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* console.log(order); // [[1, 0], [2, 2], [3, 1]]
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* });
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*
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* @example
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*
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* // object
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* var order = [];
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* var object = { a: 1, b: 3, c: 2 };
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* var iterator = function(num, done) {
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* setTimeout(function() {
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* order.push(num);
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* done(null, num);
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* }, num * 10);
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* };
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* async.map(object, iterator, function(err, res) {
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* console.log(res); // [1, 3, 2]
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* console.log(order); // [1, 2, 3]
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* });
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*
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* @example
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*
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* // object with key
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* var order = [];
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* var object = { a: 1, b: 3, c: 2 };
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* var iterator = function(num, key, done) {
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* setTimeout(function() {
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* order.push([num, key]);
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* done(null, num);
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* }, num * 10);
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* };
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* async.map(object, iterator, function(err, res) {
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* console.log(res); // [1, 3, 2]
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* console.log(order); // [[1, 'a'], [2, 'c'], [3, 'b']]
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* });
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*
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*/
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var map = createMap(arrayEachIndex, baseEachIndex, symbolEachIndex, true);
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/**
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* @memberof async
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* @namespace mapValues
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* @param {Array|Object} collection
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* @param {Function} iterator
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* @param {Function} callback
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* @example
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*
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* // array
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* var order = [];
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* var array = [1, 3, 2];
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* var iterator = function(num, done) {
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* setTimeout(function() {
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* order.push(num);
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* done(null, num);
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* }, num * 10);
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* };
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* async.mapValues(array, iterator, function(err, res) {
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* console.log(res); // { '0': 1, '1': 3, '2': 2 }
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* console.log(order); // [1, 2, 3]
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* });
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*
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* @example
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*
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* // array with index
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* var order = [];
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* var array = [1, 3, 2];
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* var iterator = function(num, index, done) {
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* setTimeout(function() {
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* order.push([num, index]);
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* done(null, num);
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* }, num * 10);
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* };
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* async.mapValues(array, iterator, function(err, res) {
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* console.log(res); // { '0': 1, '1': 3, '2': 2 }
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* console.log(order); // [[1, 0], [2, 2], [3, 1]]
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* });
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*
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* @example
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*
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* // object
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* var order = [];
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* var object = { a: 1, b: 3, c: 2 };
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* var iterator = function(num, done) {
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* setTimeout(function() {
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* order.push(num);
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* done(null, num);
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* }, num * 10);
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* };
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* async.mapValues(object, iterator, function(err, res) {
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* console.log(res); // { a: 1, b: 3, c: 2 }
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* console.log(order); // [1, 2, 3]
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* });
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*
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* @example
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*
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* // object with key
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* var order = [];
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* var object = { a: 1, b: 3, c: 2 };
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* var iterator = function(num, key, done) {
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* setTimeout(function() {
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* order.push([num, key]);
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* done(null, num);
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* }, num * 10);
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* };
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* async.mapValues(object, iterator, function(err, res) {
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* console.log(res); // { a: 1, b: 3, c: 2 }
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* console.log(order); // [[1, 'a'], [2, 'c'], [3, 'b']]
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* });
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*
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*/
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var mapValues = createMap(arrayEachIndex, baseEachKey, symbolEachKey, false);
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/**
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* @memberof async
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* @namespace filter
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* @param {Array|Object} collection
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* @param {Function} iterator
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* @param {Function} callback
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* @example
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*
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* // array
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* var order = [];
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* var array = [1, 3, 2];
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* var iterator = function(num, done) {
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* setTimeout(function() {
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* order.push(num);
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* done(null, num % 2);
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* }, num * 10);
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* };
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* async.filter(array, iterator, function(err, res) {
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* console.log(res); // [1, 3];
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* console.log(order); // [1, 2, 3]
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* });
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*
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* @example
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*
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* // array with index
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* var order = [];
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* var array = [1, 3, 2];
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* var iterator = function(num, index, done) {
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* setTimeout(function() {
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* order.push([num, index]);
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* done(null, num % 2);
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* }, num * 10);
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* };
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* async.filter(array, iterator, function(err, res) {
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* console.log(res); // [1, 3];
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* console.log(order); // [[1, 0], [2, 2], [3, 1]]
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* });
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*
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* @example
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*
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* // object
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* var order = [];
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* var object = { a: 1, b: 3, c: 2 };
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* var iterator = function(num, done) {
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* setTimeout(function() {
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* order.push(num);
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* done(null, num % 2);
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* }, num * 10);
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* };
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* async.filter(object, iterator, function(err, res) {
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* console.log(res); // [1, 3];
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* console.log(order); // [1, 2, 3]
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* });
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*
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* @example
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*
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* // object with key
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* var order = [];
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* var object = { a: 1, b: 3, c: 2 };
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* var iterator = function(num, key, done) {
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* setTimeout(function() {
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* order.push([num, key]);
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* done(null, num % 2);
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* }, num * 10);
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* };
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* async.filter(object, iterator, function(err, res) {
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* console.log(res); // [1, 3];
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* console.log(order); // [[1, 'a'], [2, 'c'], [3, 'b']]
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* });
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*
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*/
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var filter = createFilter(arrayEachIndexValue, baseEachIndexValue, symbolEachIndexValue, true);
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/**
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* @memberof async
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* @namespace filterSeries
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* @param {Array|Object} collection
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* @param {Function} iterator
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* @param {Function} callback
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* @example
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*
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* // array
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* var order = [];
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* var array = [1, 3, 2];
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* var iterator = function(num, done) {
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* setTimeout(function() {
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* order.push(num);
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* done(null, num % 2);
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* }, num * 10);
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* };
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* async.filterSeries(array, iterator, function(err, res) {
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* console.log(res); // [1, 3];
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* console.log(order); // [1, 3, 2]
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* });
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*
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* @example
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*
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* // array with index
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* var order = [];
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* var array = [1, 3, 2];
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* var iterator = function(num, index, done) {
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* setTimeout(function() {
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* order.push([num, index]);
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* done(null, num % 2);
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* }, num * 10);
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* };
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* async.filterSeries(array, iterator, function(err, res) {
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* console.log(res); // [1, 3]
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* console.log(order); // [[1, 0], [3, 1], [2, 2]]
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* });
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*
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* @example
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*
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* // object
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* var order = [];
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* var object = { a: 1, b: 3, c: 2 };
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* var iterator = function(num, done) {
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* setTimeout(function() {
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* order.push(num);
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* done(null, num % 2);
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* }, num * 10);
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* };
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* async.filterSeries(object, iterator, function(err, res) {
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* console.log(res); // [1, 3]
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* console.log(order); // [1, 3, 2]
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* });
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*
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* @example
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*
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* // object with key
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* var order = [];
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* var object = { a: 1, b: 3, c: 2 };
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* var iterator = function(num, key, done) {
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* setTimeout(function() {
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* order.push([num, key]);
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* done(null, num % 2);
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* }, num * 10);
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* };
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* async.filterSeries(object, iterator, function(err, res) {
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* console.log(res); // [1, 3]
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* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'c']]
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* });
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*
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*/
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var filterSeries = createFilterSeries(true);
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/**
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* @memberof async
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* @namespace filterLimit
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* @param {Array|Object} collection
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* @param {number} limit - limit >= 1
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* @param {Function} iterator
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* @param {Function} callback
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* @example
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*
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* // array
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* var order = [];
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* var array = [1, 5, 3, 4, 2];
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* var iterator = function(num, done) {
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* setTimeout(function() {
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* order.push(num);
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* done(null, num % 2);
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* }, num * 10);
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* };
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* async.filterLimit(array, 2, iterator, function(err, res) {
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* console.log(res); // [1, 5, 3]
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* console.log(order); // [1, 3, 5, 2, 4]
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* });
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*
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* @example
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|
*
|
|
* // array with index
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|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, index, done) {
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* setTimeout(function() {
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* order.push([num, index]);
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* done(null, num % 2);
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* }, num * 10);
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* };
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* async.filterLimit(array, 2, iterator, function(err, res) {
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* console.log(res); // [1, 5, 3]
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* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4], [4, 3]]
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* });
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*
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|
* @example
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|
*
|
|
* // object
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|
* var order = [];
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|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, done) {
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* setTimeout(function() {
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* order.push(num);
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* done(null, num % 2);
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* }, num * 10);
|
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* };
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* async.filterLimit(object, 2, iterator, function(err, res) {
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* console.log(res); // [1, 5, 3]
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* console.log(order); // [1, 3, 5, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
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* order.push([num, key]);
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|
* done(null, num % 2);
|
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* }, num * 10);
|
|
* };
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* async.filterLimit(object, 2, iterator, function(err, res) {
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* console.log(res); // [1, 5, 3]
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|
* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e'], [4, 'd']]
|
|
* });
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|
*
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|
*/
|
|
var filterLimit = createFilterLimit(true);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace reject
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, done) {
|
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* setTimeout(function() {
|
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* order.push(num);
|
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* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.reject(array, iterator, function(err, res) {
|
|
* console.log(res); // [2];
|
|
* console.log(order); // [1, 2, 3]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.reject(array, iterator, function(err, res) {
|
|
* console.log(res); // [2];
|
|
* console.log(order); // [[1, 0], [2, 2], [3, 1]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.reject(object, iterator, function(err, res) {
|
|
* console.log(res); // [2];
|
|
* console.log(order); // [1, 2, 3]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.reject(object, iterator, function(err, res) {
|
|
* console.log(res); // [2];
|
|
* console.log(order); // [[1, 'a'], [2, 'c'], [3, 'b']]
|
|
* });
|
|
*
|
|
*/
|
|
var reject = createFilter(arrayEachIndexValue, baseEachIndexValue, symbolEachIndexValue, false);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace rejectSeries
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.rejectSeries(array, iterator, function(err, res) {
|
|
* console.log(res); // [2];
|
|
* console.log(order); // [1, 3, 2]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.rejectSeries(object, iterator, function(err, res) {
|
|
* console.log(res); // [2];
|
|
* console.log(order); // [1, 3, 2]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.rejectSeries(object, iterator, function(err, res) {
|
|
* console.log(res); // [2];
|
|
* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'c']]
|
|
* });
|
|
*
|
|
*/
|
|
var rejectSeries = createFilterSeries(false);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace rejectLimit
|
|
* @param {Array|Object} collection
|
|
* @param {number} limit - limit >= 1
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.rejectLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // [4, 2]
|
|
* console.log(order); // [1, 3, 5, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.rejectLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // [4, 2]
|
|
* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4], [4, 3]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.rejectLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // [4, 2]
|
|
* console.log(order); // [1, 3, 5, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.rejectLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // [4, 2]
|
|
* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e'], [4, 'd']]
|
|
* });
|
|
*
|
|
*/
|
|
var rejectLimit = createFilterLimit(false);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace detect
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.detect(array, iterator, function(err, res) {
|
|
* console.log(res); // 1
|
|
* console.log(order); // [1]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.detect(array, iterator, function(err, res) {
|
|
* console.log(res); // 1
|
|
* console.log(order); // [[1, 0]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.detect(object, iterator, function(err, res) {
|
|
* console.log(res); // 1
|
|
* console.log(order); // [1]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.detect(object, iterator, function(err, res) {
|
|
* console.log(res); // 1
|
|
* console.log(order); // [[1, 'a']]
|
|
* });
|
|
*
|
|
*/
|
|
var detect = createDetect(arrayEachValue, baseEachValue, symbolEachValue, true);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace detectSeries
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.detectSeries(array, iterator, function(err, res) {
|
|
* console.log(res); // 1
|
|
* console.log(order); // [1]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.detectSeries(array, iterator, function(err, res) {
|
|
* console.log(res); // 1
|
|
* console.log(order); // [[1, 0]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.detectSeries(object, iterator, function(err, res) {
|
|
* console.log(res); // 1
|
|
* console.log(order); // [1]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.detectSeries(object, iterator, function(err, res) {
|
|
* console.log(res); // 1
|
|
* console.log(order); // [[1, 'a']]
|
|
* });
|
|
*
|
|
*/
|
|
var detectSeries = createDetectSeries(true);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace detectLimit
|
|
* @param {Array|Object} collection
|
|
* @param {number} limit - limit >= 1
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.detectLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // 1
|
|
* console.log(order); // [1]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.detectLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // 1
|
|
* console.log(order); // [[1, 0]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.detectLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // 1
|
|
* console.log(order); // [1]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.detectLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // 1
|
|
* console.log(order); // [[1, 'a']]
|
|
* });
|
|
*
|
|
*/
|
|
var detectLimit = createDetectLimit(true);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace every
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.every(array, iterator, function(err, res) {
|
|
* console.log(res); // false
|
|
* console.log(order); // [1, 2]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.every(array, iterator, function(err, res) {
|
|
* console.log(res); // false
|
|
* console.log(order); // [[1, 0], [2, 2]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.every(object, iterator, function(err, res) {
|
|
* console.log(res); // false
|
|
* console.log(order); // [1, 2]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.every(object, iterator, function(err, res) {
|
|
* console.log(res); // false
|
|
* console.log(order); // [[1, 'a'], [2, 'c']]
|
|
* });
|
|
*
|
|
*/
|
|
var every = createEvery(arrayEachValue, baseEachValue, symbolEachValue);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace everySeries
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.everySeries(array, iterator, function(err, res) {
|
|
* console.log(res); // false
|
|
* console.log(order); // [1, 3, 2]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.everySeries(array, iterator, function(err, res) {
|
|
* console.log(res); // false
|
|
* console.log(order); // [[1, 0], [3, 1], [2, 2]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.everySeries(object, iterator, function(err, res) {
|
|
* console.log(res); // false
|
|
* console.log(order); // [1, 3, 2]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.everySeries(object, iterator, function(err, res) {
|
|
* console.log(res); // false
|
|
* console.log(order); // [[1, 'a'], [3, 'b'] [2, 'c']]
|
|
* });
|
|
*
|
|
*/
|
|
var everySeries = createEverySeries();
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace everyLimit
|
|
* @param {Array|Object} collection
|
|
* @param {number} limit - limit >= 1
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.everyLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // false
|
|
* console.log(order); // [1, 3, 5, 2]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.everyLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // false
|
|
* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.everyLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // false
|
|
* console.log(order); // [1, 3, 5, 2]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.everyLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // false
|
|
* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e']]
|
|
* });
|
|
*
|
|
*/
|
|
var everyLimit = createEveryLimit();
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace pick
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 3, 2, 4];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.pick(array, iterator, function(err, res) {
|
|
* console.log(res); // { '0': 1, '1': 3 }
|
|
* console.log(order); // [1, 2, 3, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 3, 2, 4];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.pick(array, iterator, function(err, res) {
|
|
* console.log(res); // { '0': 1, '1': 3 }
|
|
* console.log(order); // [[0, 1], [2, 2], [3, 1], [4, 3]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2, d: 4 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.pick(object, iterator, function(err, res) {
|
|
* console.log(res); // { a: 1, b: 3 }
|
|
* console.log(order); // [1, 2, 3, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2, d: 4 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.pick(object, iterator, function(err, res) {
|
|
* console.log(res); // { a: 1, b: 3 }
|
|
* console.log(order); // [[1, 'a'], [2, 'c'], [3, 'b'], [4, 'd']]
|
|
* });
|
|
*
|
|
*/
|
|
var pick = createPick(arrayEachIndexValue, baseEachKeyValue, symbolEachKeyValue, true);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace pickSeries
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 3, 2, 4];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.pickSeries(array, iterator, function(err, res) {
|
|
* console.log(res); // { '0': 1, '1': 3 }
|
|
* console.log(order); // [1, 3, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 3, 2, 4];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.pickSeries(array, iterator, function(err, res) {
|
|
* console.log(res); // { '0': 1, '1': 3 }
|
|
* console.log(order); // [[0, 1], [3, 1], [2, 2], [4, 3]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2, d: 4 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.pickSeries(object, iterator, function(err, res) {
|
|
* console.log(res); // { a: 1, b: 3 }
|
|
* console.log(order); // [1, 3, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2, d: 4 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.pickSeries(object, iterator, function(err, res) {
|
|
* console.log(res); // { a: 1, b: 3 }
|
|
* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'c'], [4, 'd']]
|
|
* });
|
|
*
|
|
*/
|
|
var pickSeries = createPickSeries(true);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace pickLimit
|
|
* @param {Array|Object} collection
|
|
* @param {number} limit - limit >= 1
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.pickLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // { '0': 1, '1': 5, '2': 3 }
|
|
* console.log(order); // [1, 3, 5, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.pickLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // { '0': 1, '1': 5, '2': 3 }
|
|
* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4], [4, 3]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.pickLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // { a: 1, b: 5, c: 3 }
|
|
* console.log(order); // [1, 3, 5, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.pickLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // { a: 1, b: 5, c: 3 }
|
|
* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e'], [4, 'd']]
|
|
* });
|
|
*
|
|
*/
|
|
var pickLimit = createPickLimit(true);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace omit
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 3, 2, 4];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.omit(array, iterator, function(err, res) {
|
|
* console.log(res); // { '2': 2, '3': 4 }
|
|
* console.log(order); // [1, 2, 3, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 3, 2, 4];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.omit(array, iterator, function(err, res) {
|
|
* console.log(res); // { '2': 2, '3': 4 }
|
|
* console.log(order); // [[0, 1], [2, 2], [3, 1], [4, 3]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2, d: 4 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.omit(object, iterator, function(err, res) {
|
|
* console.log(res); // { c: 2, d: 4 }
|
|
* console.log(order); // [1, 2, 3, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2, d: 4 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.omit(object, iterator, function(err, res) {
|
|
* console.log(res); // { c: 2, d: 4 }
|
|
* console.log(order); // [[1, 'a'], [2, 'c'], [3, 'b'], [4, 'd']]
|
|
* });
|
|
*
|
|
*/
|
|
var omit = createPick(arrayEachIndexValue, baseEachKeyValue, symbolEachKeyValue, false);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace omitSeries
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 3, 2, 4];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.omitSeries(array, iterator, function(err, res) {
|
|
* console.log(res); // { '2': 2, '3': 4 }
|
|
* console.log(order); // [1, 3, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 3, 2, 4];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.omitSeries(array, iterator, function(err, res) {
|
|
* console.log(res); // { '2': 2, '3': 4 }
|
|
* console.log(order); // [[0, 1], [3, 1], [2, 2], [4, 3]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2, d: 4 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.omitSeries(object, iterator, function(err, res) {
|
|
* console.log(res); // { c: 2, d: 4 }
|
|
* console.log(order); // [1, 3, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2, d: 4 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.omitSeries(object, iterator, function(err, res) {
|
|
* console.log(res); // { c: 2, d: 4 }
|
|
* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'c'], [4, 'd']]
|
|
* });
|
|
*
|
|
*/
|
|
var omitSeries = createPickSeries(false);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace omitLimit
|
|
* @param {Array|Object} collection
|
|
* @param {number} limit - limit >= 1
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.omitLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // { '3': 4, '4': 2 }
|
|
* console.log(order); // [1, 3, 5, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.omitLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // { '3': 4, '4': 2 }
|
|
* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4], [4, 3]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.omitLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // { d: 4, e: 2 }
|
|
* console.log(order); // [1, 3, 5, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.omitLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // { d: 4, e: 2 }
|
|
* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e'], [4, 'd']]
|
|
* });
|
|
*
|
|
*/
|
|
var omitLimit = createPickLimit(false);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace transform
|
|
* @param {Array|Object} collection
|
|
* @param {Array|Object|Function} [accumulator]
|
|
* @param {Function} [iterator]
|
|
* @param {Function} [callback]
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var collection = [1, 3, 2, 4];
|
|
* var iterator = function(result, num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* result.push(num)
|
|
* done();
|
|
* }, num * 10);
|
|
* };
|
|
* async.transform(collection, iterator, function(err, res) {
|
|
* console.log(res); // [1, 2, 3, 4]
|
|
* console.log(order); // [1, 2, 3, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index and accumulator
|
|
* var order = [];
|
|
* var collection = [1, 3, 2, 4];
|
|
* var iterator = function(result, num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* result[index] = num;
|
|
* done();
|
|
* }, num * 10);
|
|
* };
|
|
* async.transform(collection, {}, iterator, function(err, res) {
|
|
* console.log(res); // { '0': 1, '1': 3, '2': 2, '3': 4 }
|
|
* console.log(order); // [[1, 0], [2, 2], [3, 1], [4, 3]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with accumulator
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2, d: 4 };
|
|
* var iterator = function(result, num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* result.push(num);
|
|
* done();
|
|
* }, num * 10);
|
|
* };
|
|
* async.transform(collection, [], iterator, function(err, res) {
|
|
* console.log(res); // [1, 2, 3, 4]
|
|
* console.log(order); // [1, 2, 3, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2, d: 4 };
|
|
* var iterator = function(result, num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* result[key] = num;
|
|
* done();
|
|
* }, num * 10);
|
|
* };
|
|
* async.transform(collection, iterator, function(err, res) {
|
|
* console.log(res); // { a: 1, b: 3, c: 2, d: 4 }
|
|
* console.log(order); // [[1, 'a'], [2, 'c'], [3, 'b'], [4, 'd']]
|
|
* });
|
|
*
|
|
*/
|
|
var transform = createTransform(arrayEachResult, baseEachResult, symbolEachResult);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace sortBy
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.sortBy(array, iterator, function(err, res) {
|
|
* console.log(res); // [1, 2, 3];
|
|
* console.log(order); // [1, 2, 3]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.sortBy(array, iterator, function(err, res) {
|
|
* console.log(res); // [1, 2, 3]
|
|
* console.log(order); // [[1, 0], [2, 2], [3, 1]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.sortBy(object, iterator, function(err, res) {
|
|
* console.log(res); // [1, 2, 3]
|
|
* console.log(order); // [1, 2, 3]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.sortBy(object, iterator, function(err, res) {
|
|
* console.log(res); // [1, 2, 3]
|
|
* console.log(order); // [[1, 'a'], [2, 'c'], [3, 'b']]
|
|
* });
|
|
*
|
|
*/
|
|
var sortBy = createSortBy(arrayEachIndexValue, baseEachIndexValue, symbolEachIndexValue);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace concat
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, [num]);
|
|
* }, num * 10);
|
|
* };
|
|
* async.concat(array, iterator, function(err, res) {
|
|
* console.log(res); // [1, 2, 3];
|
|
* console.log(order); // [1, 2, 3]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, [num]);
|
|
* }, num * 10);
|
|
* };
|
|
* async.concat(array, iterator, function(err, res) {
|
|
* console.log(res); // [1, 2, 3]
|
|
* console.log(order); // [[1, 0], [2, 2], [3, 1]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, [num]);
|
|
* }, num * 10);
|
|
* };
|
|
* async.concat(object, iterator, function(err, res) {
|
|
* console.log(res); // [1, 2, 3]
|
|
* console.log(order); // [1, 2, 3]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, [num]);
|
|
* }, num * 10);
|
|
* };
|
|
* async.concat(object, iterator, function(err, res) {
|
|
* console.log(res); // [1, 2, 3]
|
|
* console.log(order); // [[1, 'a'], [2, 'c'], [3, 'b']]
|
|
* });
|
|
*
|
|
*/
|
|
var concat = createConcat(arrayEachIndex, baseEachIndex, symbolEachIndex);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace groupBy
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [4.2, 6.4, 6.1];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, Math.floor(num));
|
|
* }, num * 10);
|
|
* };
|
|
* async.groupBy(array, iterator, function(err, res) {
|
|
* console.log(res); // { '4': [4.2], '6': [6.1, 6.4] }
|
|
* console.log(order); // [4.2, 6.1, 6.4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [4.2, 6.4, 6.1];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, Math.floor(num));
|
|
* }, num * 10);
|
|
* };
|
|
* async.groupBy(array, iterator, function(err, res) {
|
|
* console.log(res); // { '4': [4.2], '6': [6.1, 6.4] }
|
|
* console.log(order); // [[4.2, 0], [6.1, 2], [6.4, 1]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 4.2, b: 6.4, c: 6.1 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, Math.floor(num));
|
|
* }, num * 10);
|
|
* };
|
|
* async.groupBy(object, iterator, function(err, res) {
|
|
* console.log(res); // { '4': [4.2], '6': [6.1, 6.4] }
|
|
* console.log(order); // [4.2, 6.1, 6.4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 4.2, b: 6.4, c: 6.1 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, Math.floor(num));
|
|
* }, num * 10);
|
|
* };
|
|
* async.groupBy(object, iterator, function(err, res) {
|
|
* console.log(res); // { '4': [4.2], '6': [6.1, 6.4] }
|
|
* console.log(order); // [[4.2, 'a'], [6.1, 'c'], [6.4, 'b']]
|
|
* });
|
|
*
|
|
*/
|
|
var groupBy = createGroupBy(arrayEachValue, baseEachValue, symbolEachValue);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace parallel
|
|
* @param {Array|Object} tasks - functions
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* var order = [];
|
|
* var tasks = [
|
|
* function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(1);
|
|
* done(null, 1);
|
|
* }, 10);
|
|
* },
|
|
* function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(2);
|
|
* done(null, 2);
|
|
* }, 30);
|
|
* },
|
|
* function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(3);
|
|
* done(null, 3);
|
|
* }, 40);
|
|
* },
|
|
* function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(4);
|
|
* done(null, 4);
|
|
* }, 20);
|
|
* }
|
|
* ];
|
|
* async.parallel(tasks, function(err, res) {
|
|
* console.log(res); // [1, 2, 3, 4];
|
|
* console.log(order); // [1, 4, 2, 3]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* var order = [];
|
|
* var tasks = {
|
|
* 'a': function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(1);
|
|
* done(null, 1);
|
|
* }, 10);
|
|
* },
|
|
* 'b': function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(2);
|
|
* done(null, 2);
|
|
* }, 30);
|
|
* },
|
|
* 'c': function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(3);
|
|
* done(null, 3);
|
|
* }, 40);
|
|
* },
|
|
* 'd': function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(4);
|
|
* done(null, 4);
|
|
* }, 20);
|
|
* }
|
|
* };
|
|
* async.parallel(tasks, function(err, res) {
|
|
* console.log(res); // { a: 1, b: 2, c: 3, d:4 }
|
|
* console.log(order); // [1, 4, 2, 3]
|
|
* });
|
|
*
|
|
*/
|
|
var parallel = createParallel(arrayEachFunc, baseEachFunc);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace applyEach
|
|
*/
|
|
var applyEach = createApplyEach(map);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace applyEachSeries
|
|
*/
|
|
var applyEachSeries = createApplyEach(mapSeries);
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace log
|
|
*/
|
|
var log = createLogger('log');
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace dir
|
|
*/
|
|
var dir = createLogger('dir');
|
|
|
|
/**
|
|
* @version 2.6.2
|
|
* @namespace async
|
|
*/
|
|
var index = {
|
|
VERSION: '2.6.2',
|
|
|
|
// Collections
|
|
each: each,
|
|
eachSeries: eachSeries,
|
|
eachLimit: eachLimit,
|
|
forEach: each,
|
|
forEachSeries: eachSeries,
|
|
forEachLimit: eachLimit,
|
|
eachOf: each,
|
|
eachOfSeries: eachSeries,
|
|
eachOfLimit: eachLimit,
|
|
forEachOf: each,
|
|
forEachOfSeries: eachSeries,
|
|
forEachOfLimit: eachLimit,
|
|
map: map,
|
|
mapSeries: mapSeries,
|
|
mapLimit: mapLimit,
|
|
mapValues: mapValues,
|
|
mapValuesSeries: mapValuesSeries,
|
|
mapValuesLimit: mapValuesLimit,
|
|
filter: filter,
|
|
filterSeries: filterSeries,
|
|
filterLimit: filterLimit,
|
|
select: filter,
|
|
selectSeries: filterSeries,
|
|
selectLimit: filterLimit,
|
|
reject: reject,
|
|
rejectSeries: rejectSeries,
|
|
rejectLimit: rejectLimit,
|
|
detect: detect,
|
|
detectSeries: detectSeries,
|
|
detectLimit: detectLimit,
|
|
find: detect,
|
|
findSeries: detectSeries,
|
|
findLimit: detectLimit,
|
|
pick: pick,
|
|
pickSeries: pickSeries,
|
|
pickLimit: pickLimit,
|
|
omit: omit,
|
|
omitSeries: omitSeries,
|
|
omitLimit: omitLimit,
|
|
reduce: reduce,
|
|
inject: reduce,
|
|
foldl: reduce,
|
|
reduceRight: reduceRight,
|
|
foldr: reduceRight,
|
|
transform: transform,
|
|
transformSeries: transformSeries,
|
|
transformLimit: transformLimit,
|
|
sortBy: sortBy,
|
|
sortBySeries: sortBySeries,
|
|
sortByLimit: sortByLimit,
|
|
some: some,
|
|
someSeries: someSeries,
|
|
someLimit: someLimit,
|
|
any: some,
|
|
anySeries: someSeries,
|
|
anyLimit: someLimit,
|
|
every: every,
|
|
everySeries: everySeries,
|
|
everyLimit: everyLimit,
|
|
all: every,
|
|
allSeries: everySeries,
|
|
allLimit: everyLimit,
|
|
concat: concat,
|
|
concatSeries: concatSeries,
|
|
concatLimit: concatLimit,
|
|
groupBy: groupBy,
|
|
groupBySeries: groupBySeries,
|
|
groupByLimit: groupByLimit,
|
|
|
|
// Control Flow
|
|
parallel: parallel,
|
|
series: series,
|
|
parallelLimit: parallelLimit,
|
|
tryEach: tryEach,
|
|
waterfall: waterfall,
|
|
angelFall: angelFall,
|
|
angelfall: angelFall,
|
|
whilst: whilst,
|
|
doWhilst: doWhilst,
|
|
until: until,
|
|
doUntil: doUntil,
|
|
during: during,
|
|
doDuring: doDuring,
|
|
forever: forever,
|
|
compose: compose,
|
|
seq: seq,
|
|
applyEach: applyEach,
|
|
applyEachSeries: applyEachSeries,
|
|
queue: queue,
|
|
priorityQueue: priorityQueue,
|
|
cargo: cargo,
|
|
auto: auto,
|
|
autoInject: autoInject,
|
|
retry: retry,
|
|
retryable: retryable,
|
|
iterator: iterator,
|
|
times: times,
|
|
timesSeries: timesSeries,
|
|
timesLimit: timesLimit,
|
|
race: race,
|
|
|
|
// Utils
|
|
apply: apply,
|
|
nextTick: asyncNextTick,
|
|
setImmediate: asyncSetImmediate,
|
|
memoize: memoize,
|
|
unmemoize: unmemoize,
|
|
ensureAsync: ensureAsync,
|
|
constant: constant,
|
|
asyncify: asyncify,
|
|
wrapSync: asyncify,
|
|
log: log,
|
|
dir: dir,
|
|
reflect: reflect,
|
|
reflectAll: reflectAll,
|
|
timeout: timeout,
|
|
createLogger: createLogger,
|
|
|
|
// Mode
|
|
safe: safe,
|
|
fast: fast
|
|
};
|
|
|
|
exports['default'] = index;
|
|
baseEachSync(
|
|
index,
|
|
function(func, key) {
|
|
exports[key] = func;
|
|
},
|
|
nativeKeys(index)
|
|
);
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function createImmediate(safeMode) {
|
|
var delay = function delay(fn) {
|
|
var args = slice(arguments, 1);
|
|
setTimeout(function() {
|
|
fn.apply(null, args);
|
|
});
|
|
};
|
|
asyncSetImmediate = typeof setImmediate === func ? setImmediate : delay;
|
|
if (typeof process === obj && typeof process.nextTick === func) {
|
|
nextTick = /^v0.10/.test(process.version) ? asyncSetImmediate : process.nextTick;
|
|
asyncNextTick = /^v0/.test(process.version) ? asyncSetImmediate : process.nextTick;
|
|
} else {
|
|
asyncNextTick = nextTick = asyncSetImmediate;
|
|
}
|
|
if (safeMode === false) {
|
|
nextTick = function(cb) {
|
|
cb();
|
|
};
|
|
}
|
|
}
|
|
|
|
/* sync functions based on lodash */
|
|
|
|
/**
|
|
* Converts `arguments` to an array.
|
|
*
|
|
* @private
|
|
* @param {Array} array = The array to slice.
|
|
*/
|
|
function createArray(array) {
|
|
var index = -1;
|
|
var size = array.length;
|
|
var result = Array(size);
|
|
|
|
while (++index < size) {
|
|
result[index] = array[index];
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Create an array from `start`
|
|
*
|
|
* @private
|
|
* @param {Array} array - The array to slice.
|
|
* @param {number} start - The start position.
|
|
*/
|
|
function slice(array, start) {
|
|
var end = array.length;
|
|
var index = -1;
|
|
var size = end - start;
|
|
if (size <= 0) {
|
|
return [];
|
|
}
|
|
var result = Array(size);
|
|
|
|
while (++index < size) {
|
|
result[index] = array[index + start];
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {Object} object
|
|
*/
|
|
function objectClone(object) {
|
|
var keys = nativeKeys(object);
|
|
var size = keys.length;
|
|
var index = -1;
|
|
var result = {};
|
|
|
|
while (++index < size) {
|
|
var key = keys[index];
|
|
result[key] = object[key];
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Create an array with all falsey values removed.
|
|
*
|
|
* @private
|
|
* @param {Array} array - The array to compact.
|
|
*/
|
|
function compact(array) {
|
|
var index = -1;
|
|
var size = array.length;
|
|
var result = [];
|
|
|
|
while (++index < size) {
|
|
var value = array[index];
|
|
if (value) {
|
|
result[result.length] = value;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Create an array of reverse sequence.
|
|
*
|
|
* @private
|
|
* @param {Array} array - The array to reverse.
|
|
*/
|
|
function reverse(array) {
|
|
var index = -1;
|
|
var size = array.length;
|
|
var result = Array(size);
|
|
var resIndex = size;
|
|
|
|
while (++index < size) {
|
|
result[--resIndex] = array[index];
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Checks if key exists in object property.
|
|
*
|
|
* @private
|
|
* @param {Object} object - The object to inspect.
|
|
* @param {string} key - The key to check.
|
|
*/
|
|
function has(object, key) {
|
|
return object.hasOwnProperty(key);
|
|
}
|
|
|
|
/**
|
|
* Check if target exists in array.
|
|
* @private
|
|
* @param {Array} array
|
|
* @param {*} target
|
|
*/
|
|
function notInclude(array, target) {
|
|
var index = -1;
|
|
var size = array.length;
|
|
|
|
while (++index < size) {
|
|
if (array[index] === target) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {Array} array - The array to iterate over.
|
|
* @param {Function} iterator - The function invoked per iteration.
|
|
*/
|
|
function arrayEachSync(array, iterator) {
|
|
var index = -1;
|
|
var size = array.length;
|
|
|
|
while (++index < size) {
|
|
iterator(array[index], index);
|
|
}
|
|
return array;
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {Object} object - The object to iterate over.
|
|
* @param {Function} iterator - The function invoked per iteration.
|
|
* @param {Array} keys
|
|
*/
|
|
function baseEachSync(object, iterator, keys) {
|
|
var index = -1;
|
|
var size = keys.length;
|
|
|
|
while (++index < size) {
|
|
var key = keys[index];
|
|
iterator(object[key], key);
|
|
}
|
|
return object;
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {number} n
|
|
* @param {Function} iterator
|
|
*/
|
|
function timesSync(n, iterator) {
|
|
var index = -1;
|
|
while (++index < n) {
|
|
iterator(index);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {Array} array
|
|
* @param {number[]} criteria
|
|
*/
|
|
function sortByCriteria(array, criteria) {
|
|
var l = array.length;
|
|
var indices = Array(l);
|
|
var i;
|
|
for (i = 0; i < l; i++) {
|
|
indices[i] = i;
|
|
}
|
|
quickSort(criteria, 0, l - 1, indices);
|
|
var result = Array(l);
|
|
for (var n = 0; n < l; n++) {
|
|
i = indices[n];
|
|
result[n] = i === undefined ? array[n] : array[i];
|
|
}
|
|
return result;
|
|
}
|
|
|
|
function partition(array, i, j, mid, indices) {
|
|
var l = i;
|
|
var r = j;
|
|
while (l <= r) {
|
|
i = l;
|
|
while (l < r && array[l] < mid) {
|
|
l++;
|
|
}
|
|
while (r >= i && array[r] >= mid) {
|
|
r--;
|
|
}
|
|
if (l > r) {
|
|
break;
|
|
}
|
|
swap(array, indices, l++, r--);
|
|
}
|
|
return l;
|
|
}
|
|
|
|
function swap(array, indices, l, r) {
|
|
var n = array[l];
|
|
array[l] = array[r];
|
|
array[r] = n;
|
|
var i = indices[l];
|
|
indices[l] = indices[r];
|
|
indices[r] = i;
|
|
}
|
|
|
|
function quickSort(array, i, j, indices) {
|
|
if (i === j) {
|
|
return;
|
|
}
|
|
var k = i;
|
|
while (++k <= j && array[i] === array[k]) {
|
|
var l = k - 1;
|
|
if (indices[l] > indices[k]) {
|
|
var index = indices[l];
|
|
indices[l] = indices[k];
|
|
indices[k] = index;
|
|
}
|
|
}
|
|
if (k > j) {
|
|
return;
|
|
}
|
|
var p = array[i] > array[k] ? i : k;
|
|
k = partition(array, i, j, array[p], indices);
|
|
quickSort(array, i, k - 1, indices);
|
|
quickSort(array, k, j, indices);
|
|
}
|
|
|
|
/**
|
|
* @Private
|
|
*/
|
|
function makeConcatResult(array) {
|
|
var result = [];
|
|
arrayEachSync(array, function(value) {
|
|
if (value === noop) {
|
|
return;
|
|
}
|
|
if (isArray(value)) {
|
|
nativePush.apply(result, value);
|
|
} else {
|
|
result.push(value);
|
|
}
|
|
});
|
|
return result;
|
|
}
|
|
|
|
/* async functions */
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function arrayEach(array, iterator, callback) {
|
|
var index = -1;
|
|
var size = array.length;
|
|
|
|
if (iterator.length === 3) {
|
|
while (++index < size) {
|
|
iterator(array[index], index, onlyOnce(callback));
|
|
}
|
|
} else {
|
|
while (++index < size) {
|
|
iterator(array[index], onlyOnce(callback));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function baseEach(object, iterator, callback, keys) {
|
|
var key;
|
|
var index = -1;
|
|
var size = keys.length;
|
|
|
|
if (iterator.length === 3) {
|
|
while (++index < size) {
|
|
key = keys[index];
|
|
iterator(object[key], key, onlyOnce(callback));
|
|
}
|
|
} else {
|
|
while (++index < size) {
|
|
iterator(object[keys[index]], onlyOnce(callback));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function symbolEach(collection, iterator, callback) {
|
|
var iter = collection[iteratorSymbol]();
|
|
var index = 0;
|
|
var item;
|
|
if (iterator.length === 3) {
|
|
while ((item = iter.next()).done === false) {
|
|
iterator(item.value, index++, onlyOnce(callback));
|
|
}
|
|
} else {
|
|
while ((item = iter.next()).done === false) {
|
|
index++;
|
|
iterator(item.value, onlyOnce(callback));
|
|
}
|
|
}
|
|
return index;
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function arrayEachResult(array, result, iterator, callback) {
|
|
var index = -1;
|
|
var size = array.length;
|
|
|
|
if (iterator.length === 4) {
|
|
while (++index < size) {
|
|
iterator(result, array[index], index, onlyOnce(callback));
|
|
}
|
|
} else {
|
|
while (++index < size) {
|
|
iterator(result, array[index], onlyOnce(callback));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function baseEachResult(object, result, iterator, callback, keys) {
|
|
var key;
|
|
var index = -1;
|
|
var size = keys.length;
|
|
|
|
if (iterator.length === 4) {
|
|
while (++index < size) {
|
|
key = keys[index];
|
|
iterator(result, object[key], key, onlyOnce(callback));
|
|
}
|
|
} else {
|
|
while (++index < size) {
|
|
iterator(result, object[keys[index]], onlyOnce(callback));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function symbolEachResult(collection, result, iterator, callback) {
|
|
var item;
|
|
var index = 0;
|
|
var iter = collection[iteratorSymbol]();
|
|
|
|
if (iterator.length === 4) {
|
|
while ((item = iter.next()).done === false) {
|
|
iterator(result, item.value, index++, onlyOnce(callback));
|
|
}
|
|
} else {
|
|
while ((item = iter.next()).done === false) {
|
|
index++;
|
|
iterator(result, item.value, onlyOnce(callback));
|
|
}
|
|
}
|
|
return index;
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function arrayEachFunc(array, createCallback) {
|
|
var index = -1;
|
|
var size = array.length;
|
|
|
|
while (++index < size) {
|
|
array[index](createCallback(index));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function baseEachFunc(object, createCallback, keys) {
|
|
var key;
|
|
var index = -1;
|
|
var size = keys.length;
|
|
|
|
while (++index < size) {
|
|
key = keys[index];
|
|
object[key](createCallback(key));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function arrayEachIndex(array, iterator, createCallback) {
|
|
var index = -1;
|
|
var size = array.length;
|
|
|
|
if (iterator.length === 3) {
|
|
while (++index < size) {
|
|
iterator(array[index], index, createCallback(index));
|
|
}
|
|
} else {
|
|
while (++index < size) {
|
|
iterator(array[index], createCallback(index));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function baseEachIndex(object, iterator, createCallback, keys) {
|
|
var key;
|
|
var index = -1;
|
|
var size = keys.length;
|
|
|
|
if (iterator.length === 3) {
|
|
while (++index < size) {
|
|
key = keys[index];
|
|
iterator(object[key], key, createCallback(index));
|
|
}
|
|
} else {
|
|
while (++index < size) {
|
|
iterator(object[keys[index]], createCallback(index));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function symbolEachIndex(collection, iterator, createCallback) {
|
|
var item;
|
|
var index = 0;
|
|
var iter = collection[iteratorSymbol]();
|
|
|
|
if (iterator.length === 3) {
|
|
while ((item = iter.next()).done === false) {
|
|
iterator(item.value, index, createCallback(index++));
|
|
}
|
|
} else {
|
|
while ((item = iter.next()).done === false) {
|
|
iterator(item.value, createCallback(index++));
|
|
}
|
|
}
|
|
return index;
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function baseEachKey(object, iterator, createCallback, keys) {
|
|
var key;
|
|
var index = -1;
|
|
var size = keys.length;
|
|
|
|
if (iterator.length === 3) {
|
|
while (++index < size) {
|
|
key = keys[index];
|
|
iterator(object[key], key, createCallback(key));
|
|
}
|
|
} else {
|
|
while (++index < size) {
|
|
key = keys[index];
|
|
iterator(object[key], createCallback(key));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function symbolEachKey(collection, iterator, createCallback) {
|
|
var item;
|
|
var index = 0;
|
|
var iter = collection[iteratorSymbol]();
|
|
|
|
if (iterator.length === 3) {
|
|
while ((item = iter.next()).done === false) {
|
|
iterator(item.value, index, createCallback(index++));
|
|
}
|
|
} else {
|
|
while ((item = iter.next()).done === false) {
|
|
iterator(item.value, createCallback(index++));
|
|
}
|
|
}
|
|
return index;
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function arrayEachValue(array, iterator, createCallback) {
|
|
var value;
|
|
var index = -1;
|
|
var size = array.length;
|
|
|
|
if (iterator.length === 3) {
|
|
while (++index < size) {
|
|
value = array[index];
|
|
iterator(value, index, createCallback(value));
|
|
}
|
|
} else {
|
|
while (++index < size) {
|
|
value = array[index];
|
|
iterator(value, createCallback(value));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function baseEachValue(object, iterator, createCallback, keys) {
|
|
var key, value;
|
|
var index = -1;
|
|
var size = keys.length;
|
|
|
|
if (iterator.length === 3) {
|
|
while (++index < size) {
|
|
key = keys[index];
|
|
value = object[key];
|
|
iterator(value, key, createCallback(value));
|
|
}
|
|
} else {
|
|
while (++index < size) {
|
|
value = object[keys[index]];
|
|
iterator(value, createCallback(value));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function symbolEachValue(collection, iterator, createCallback) {
|
|
var value, item;
|
|
var index = 0;
|
|
var iter = collection[iteratorSymbol]();
|
|
|
|
if (iterator.length === 3) {
|
|
while ((item = iter.next()).done === false) {
|
|
value = item.value;
|
|
iterator(value, index++, createCallback(value));
|
|
}
|
|
} else {
|
|
while ((item = iter.next()).done === false) {
|
|
index++;
|
|
value = item.value;
|
|
iterator(value, createCallback(value));
|
|
}
|
|
}
|
|
return index;
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function arrayEachIndexValue(array, iterator, createCallback) {
|
|
var value;
|
|
var index = -1;
|
|
var size = array.length;
|
|
|
|
if (iterator.length === 3) {
|
|
while (++index < size) {
|
|
value = array[index];
|
|
iterator(value, index, createCallback(index, value));
|
|
}
|
|
} else {
|
|
while (++index < size) {
|
|
value = array[index];
|
|
iterator(value, createCallback(index, value));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function baseEachIndexValue(object, iterator, createCallback, keys) {
|
|
var key, value;
|
|
var index = -1;
|
|
var size = keys.length;
|
|
|
|
if (iterator.length === 3) {
|
|
while (++index < size) {
|
|
key = keys[index];
|
|
value = object[key];
|
|
iterator(value, key, createCallback(index, value));
|
|
}
|
|
} else {
|
|
while (++index < size) {
|
|
value = object[keys[index]];
|
|
iterator(value, createCallback(index, value));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function symbolEachIndexValue(collection, iterator, createCallback) {
|
|
var value, item;
|
|
var index = 0;
|
|
var iter = collection[iteratorSymbol]();
|
|
|
|
if (iterator.length === 3) {
|
|
while ((item = iter.next()).done === false) {
|
|
value = item.value;
|
|
iterator(value, index, createCallback(index++, value));
|
|
}
|
|
} else {
|
|
while ((item = iter.next()).done === false) {
|
|
value = item.value;
|
|
iterator(value, createCallback(index++, value));
|
|
}
|
|
}
|
|
return index;
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function baseEachKeyValue(object, iterator, createCallback, keys) {
|
|
var key, value;
|
|
var index = -1;
|
|
var size = keys.length;
|
|
|
|
if (iterator.length === 3) {
|
|
while (++index < size) {
|
|
key = keys[index];
|
|
value = object[key];
|
|
iterator(value, key, createCallback(key, value));
|
|
}
|
|
} else {
|
|
while (++index < size) {
|
|
key = keys[index];
|
|
value = object[key];
|
|
iterator(value, createCallback(key, value));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function symbolEachKeyValue(collection, iterator, createCallback) {
|
|
var value, item;
|
|
var index = 0;
|
|
var iter = collection[iteratorSymbol]();
|
|
|
|
if (iterator.length === 3) {
|
|
while ((item = iter.next()).done === false) {
|
|
value = item.value;
|
|
iterator(value, index, createCallback(index++, value));
|
|
}
|
|
} else {
|
|
while ((item = iter.next()).done === false) {
|
|
value = item.value;
|
|
iterator(value, createCallback(index++, value));
|
|
}
|
|
}
|
|
return index;
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {Function} func
|
|
*/
|
|
function onlyOnce(func) {
|
|
return function(err, res) {
|
|
var fn = func;
|
|
func = throwError;
|
|
fn(err, res);
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {Function} func
|
|
*/
|
|
function once(func) {
|
|
return function(err, res) {
|
|
var fn = func;
|
|
func = noop;
|
|
fn(err, res);
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {Function} arrayEach
|
|
* @param {Function} baseEach
|
|
*/
|
|
function createEach(arrayEach, baseEach, symbolEach) {
|
|
return function each(collection, iterator, callback) {
|
|
callback = once(callback || noop);
|
|
var size, keys;
|
|
var completed = 0;
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
arrayEach(collection, iterator, done);
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = symbolEach(collection, iterator, done);
|
|
size && size === completed && callback(null);
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
baseEach(collection, iterator, done, keys);
|
|
}
|
|
if (!size) {
|
|
callback(null);
|
|
}
|
|
|
|
function done(err, bool) {
|
|
if (err) {
|
|
callback = once(callback);
|
|
callback(err);
|
|
} else if (++completed === size) {
|
|
callback(null);
|
|
} else if (bool === false) {
|
|
callback = once(callback);
|
|
callback(null);
|
|
}
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {Function} arrayEach
|
|
* @param {Function} baseEach
|
|
* @param {Function} symbolEach
|
|
*/
|
|
function createMap(arrayEach, baseEach, symbolEach, useArray) {
|
|
var init, clone;
|
|
if (useArray) {
|
|
init = Array;
|
|
clone = createArray;
|
|
} else {
|
|
init = function() {
|
|
return {};
|
|
};
|
|
clone = objectClone;
|
|
}
|
|
|
|
return function(collection, iterator, callback) {
|
|
callback = callback || noop;
|
|
var size, keys, result;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
result = init(size);
|
|
arrayEach(collection, iterator, createCallback);
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
// TODO: size could be changed
|
|
result = init(0);
|
|
size = symbolEach(collection, iterator, createCallback);
|
|
size && size === completed && callback(null, result);
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
result = init(size);
|
|
baseEach(collection, iterator, createCallback, keys);
|
|
}
|
|
if (!size) {
|
|
callback(null, init());
|
|
}
|
|
|
|
function createCallback(key) {
|
|
return function done(err, res) {
|
|
if (key === null) {
|
|
throwError();
|
|
}
|
|
if (err) {
|
|
key = null;
|
|
callback = once(callback);
|
|
callback(err, clone(result));
|
|
return;
|
|
}
|
|
result[key] = res;
|
|
key = null;
|
|
if (++completed === size) {
|
|
callback(null, result);
|
|
}
|
|
};
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {Function} arrayEach
|
|
* @param {Function} baseEach
|
|
* @param {Function} symbolEach
|
|
* @param {boolean} bool
|
|
*/
|
|
function createFilter(arrayEach, baseEach, symbolEach, bool) {
|
|
return function(collection, iterator, callback) {
|
|
callback = callback || noop;
|
|
var size, keys, result;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
result = Array(size);
|
|
arrayEach(collection, iterator, createCallback);
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
result = [];
|
|
size = symbolEach(collection, iterator, createCallback);
|
|
size && size === completed && callback(null, compact(result));
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
result = Array(size);
|
|
baseEach(collection, iterator, createCallback, keys);
|
|
}
|
|
if (!size) {
|
|
return callback(null, []);
|
|
}
|
|
|
|
function createCallback(index, value) {
|
|
return function done(err, res) {
|
|
if (index === null) {
|
|
throwError();
|
|
}
|
|
if (err) {
|
|
index = null;
|
|
callback = once(callback);
|
|
callback(err);
|
|
return;
|
|
}
|
|
if (!!res === bool) {
|
|
result[index] = value;
|
|
}
|
|
index = null;
|
|
if (++completed === size) {
|
|
callback(null, compact(result));
|
|
}
|
|
};
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {boolean} bool
|
|
*/
|
|
function createFilterSeries(bool) {
|
|
return function(collection, iterator, callback) {
|
|
callback = onlyOnce(callback || noop);
|
|
var size, key, value, keys, iter, item, iterate;
|
|
var sync = false;
|
|
var completed = 0;
|
|
var result = [];
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
iter = collection[iteratorSymbol]();
|
|
iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!size) {
|
|
return callback(null, []);
|
|
}
|
|
iterate();
|
|
|
|
function arrayIterator() {
|
|
value = collection[completed];
|
|
iterator(value, done);
|
|
}
|
|
|
|
function arrayIteratorWithIndex() {
|
|
value = collection[completed];
|
|
iterator(value, completed, done);
|
|
}
|
|
|
|
function symbolIterator() {
|
|
item = iter.next();
|
|
value = item.value;
|
|
item.done ? callback(null, result) : iterator(value, done);
|
|
}
|
|
|
|
function symbolIteratorWithKey() {
|
|
item = iter.next();
|
|
value = item.value;
|
|
item.done ? callback(null, result) : iterator(value, completed, done);
|
|
}
|
|
|
|
function objectIterator() {
|
|
key = keys[completed];
|
|
value = collection[key];
|
|
iterator(value, done);
|
|
}
|
|
|
|
function objectIteratorWithKey() {
|
|
key = keys[completed];
|
|
value = collection[key];
|
|
iterator(value, key, done);
|
|
}
|
|
|
|
function done(err, res) {
|
|
if (err) {
|
|
callback(err);
|
|
return;
|
|
}
|
|
if (!!res === bool) {
|
|
result[result.length] = value;
|
|
}
|
|
if (++completed === size) {
|
|
iterate = throwError;
|
|
callback(null, result);
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {boolean} bool
|
|
*/
|
|
function createFilterLimit(bool) {
|
|
return function(collection, limit, iterator, callback) {
|
|
callback = callback || noop;
|
|
var size, index, key, value, keys, iter, item, iterate, result;
|
|
var sync = false;
|
|
var started = 0;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
result = [];
|
|
iter = collection[iteratorSymbol]();
|
|
iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!size || isNaN(limit) || limit < 1) {
|
|
return callback(null, []);
|
|
}
|
|
result = result || Array(size);
|
|
timesSync(limit > size ? size : limit, iterate);
|
|
|
|
function arrayIterator() {
|
|
index = started++;
|
|
if (index < size) {
|
|
value = collection[index];
|
|
iterator(value, createCallback(value, index));
|
|
}
|
|
}
|
|
|
|
function arrayIteratorWithIndex() {
|
|
index = started++;
|
|
if (index < size) {
|
|
value = collection[index];
|
|
iterator(value, index, createCallback(value, index));
|
|
}
|
|
}
|
|
|
|
function symbolIterator() {
|
|
item = iter.next();
|
|
if (item.done === false) {
|
|
value = item.value;
|
|
iterator(value, createCallback(value, started++));
|
|
} else if (completed === started && iterator !== noop) {
|
|
iterator = noop;
|
|
callback(null, compact(result));
|
|
}
|
|
}
|
|
|
|
function symbolIteratorWithKey() {
|
|
item = iter.next();
|
|
if (item.done === false) {
|
|
value = item.value;
|
|
iterator(value, started, createCallback(value, started++));
|
|
} else if (completed === started && iterator !== noop) {
|
|
iterator = noop;
|
|
callback(null, compact(result));
|
|
}
|
|
}
|
|
|
|
function objectIterator() {
|
|
index = started++;
|
|
if (index < size) {
|
|
value = collection[keys[index]];
|
|
iterator(value, createCallback(value, index));
|
|
}
|
|
}
|
|
|
|
function objectIteratorWithKey() {
|
|
index = started++;
|
|
if (index < size) {
|
|
key = keys[index];
|
|
value = collection[key];
|
|
iterator(value, key, createCallback(value, index));
|
|
}
|
|
}
|
|
|
|
function createCallback(value, index) {
|
|
return function(err, res) {
|
|
if (index === null) {
|
|
throwError();
|
|
}
|
|
if (err) {
|
|
index = null;
|
|
iterate = noop;
|
|
callback = once(callback);
|
|
callback(err);
|
|
return;
|
|
}
|
|
if (!!res === bool) {
|
|
result[index] = value;
|
|
}
|
|
index = null;
|
|
if (++completed === size) {
|
|
callback = onlyOnce(callback);
|
|
callback(null, compact(result));
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
};
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace eachSeries
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done();
|
|
* }, num * 10);
|
|
* };
|
|
* async.eachSeries(array, iterator, function(err, res) {
|
|
* console.log(res); // undefined
|
|
* console.log(order); // [1, 3, 2]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done();
|
|
* }, num * 10);
|
|
* };
|
|
* async.eachSeries(array, iterator, function(err, res) {
|
|
* console.log(res); // undefined
|
|
* console.log(order); // [[1, 0], [3, 1], [2, 2]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done();
|
|
* }, num * 10);
|
|
* };
|
|
* async.eachSeries(object, iterator, function(err, res) {
|
|
* console.log(res); // undefined
|
|
* console.log(order); // [1, 3, 2]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done();
|
|
* }, num * 10);
|
|
* };
|
|
* async.eachSeries(object, iterator, function(err, res) {
|
|
* console.log(res); // undefined
|
|
* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'b']]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // break
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num !== 3);
|
|
* }, num * 10);
|
|
* };
|
|
* async.eachSeries(array, iterator, function(err, res) {
|
|
* console.log(res); // undefined
|
|
* console.log(order); // [1, 3]
|
|
* });
|
|
*/
|
|
function eachSeries(collection, iterator, callback) {
|
|
callback = onlyOnce(callback || noop);
|
|
var size, key, keys, iter, item, iterate;
|
|
var sync = false;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
iter = collection[iteratorSymbol]();
|
|
iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!size) {
|
|
return callback(null);
|
|
}
|
|
iterate();
|
|
|
|
function arrayIterator() {
|
|
iterator(collection[completed], done);
|
|
}
|
|
|
|
function arrayIteratorWithIndex() {
|
|
iterator(collection[completed], completed, done);
|
|
}
|
|
|
|
function symbolIterator() {
|
|
item = iter.next();
|
|
item.done ? callback(null) : iterator(item.value, done);
|
|
}
|
|
|
|
function symbolIteratorWithKey() {
|
|
item = iter.next();
|
|
item.done ? callback(null) : iterator(item.value, completed, done);
|
|
}
|
|
|
|
function objectIterator() {
|
|
iterator(collection[keys[completed]], done);
|
|
}
|
|
|
|
function objectIteratorWithKey() {
|
|
key = keys[completed];
|
|
iterator(collection[key], key, done);
|
|
}
|
|
|
|
function done(err, bool) {
|
|
if (err) {
|
|
callback(err);
|
|
} else if (++completed === size || bool === false) {
|
|
iterate = throwError;
|
|
callback(null);
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace eachLimit
|
|
* @param {Array|Object} collection
|
|
* @param {number} limit - limit >= 1
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done();
|
|
* }, num * 10);
|
|
* };
|
|
* async.eachLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // undefined
|
|
* console.log(order); // [1, 3, 5, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done();
|
|
* }, num * 10);
|
|
* };
|
|
* async.eachLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // undefined
|
|
* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4], [4, 3]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done();
|
|
* }, num * 10);
|
|
* };
|
|
* async.eachLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // undefined
|
|
* console.log(order); // [1, 3, 5, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done();
|
|
* }, num * 10);
|
|
* };
|
|
* async.eachLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // undefined
|
|
* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e'], [4, 'd']]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // break
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num !== 5);
|
|
* }, num * 10);
|
|
* };
|
|
* async.eachLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // undefined
|
|
* console.log(order); // [1, 3, 5]
|
|
* });
|
|
*
|
|
*/
|
|
function eachLimit(collection, limit, iterator, callback) {
|
|
callback = callback || noop;
|
|
var size, index, key, keys, iter, item, iterate;
|
|
var sync = false;
|
|
var started = 0;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
iter = collection[iteratorSymbol]();
|
|
iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
|
|
} else {
|
|
return callback(null);
|
|
}
|
|
if (!size || isNaN(limit) || limit < 1) {
|
|
return callback(null);
|
|
}
|
|
timesSync(limit > size ? size : limit, iterate);
|
|
|
|
function arrayIterator() {
|
|
if (started < size) {
|
|
iterator(collection[started++], done);
|
|
}
|
|
}
|
|
|
|
function arrayIteratorWithIndex() {
|
|
index = started++;
|
|
if (index < size) {
|
|
iterator(collection[index], index, done);
|
|
}
|
|
}
|
|
|
|
function symbolIterator() {
|
|
item = iter.next();
|
|
if (item.done === false) {
|
|
started++;
|
|
iterator(item.value, done);
|
|
} else if (completed === started && iterator !== noop) {
|
|
iterator = noop;
|
|
callback(null);
|
|
}
|
|
}
|
|
|
|
function symbolIteratorWithKey() {
|
|
item = iter.next();
|
|
if (item.done === false) {
|
|
iterator(item.value, started++, done);
|
|
} else if (completed === started && iterator !== noop) {
|
|
iterator = noop;
|
|
callback(null);
|
|
}
|
|
}
|
|
|
|
function objectIterator() {
|
|
if (started < size) {
|
|
iterator(collection[keys[started++]], done);
|
|
}
|
|
}
|
|
|
|
function objectIteratorWithKey() {
|
|
index = started++;
|
|
if (index < size) {
|
|
key = keys[index];
|
|
iterator(collection[key], key, done);
|
|
}
|
|
}
|
|
|
|
function done(err, bool) {
|
|
if (err || bool === false) {
|
|
iterate = noop;
|
|
callback = once(callback);
|
|
callback(err);
|
|
} else if (++completed === size) {
|
|
iterator = noop;
|
|
iterate = throwError;
|
|
callback = onlyOnce(callback);
|
|
callback(null);
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace mapSeries
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.mapSeries(array, iterator, function(err, res) {
|
|
* console.log(res); // [1, 3, 2];
|
|
* console.log(order); // [1, 3, 2]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.mapSeries(array, iterator, function(err, res) {
|
|
* console.log(res); // [1, 3, 2]
|
|
* console.log(order); // [[1, 0], [3, 1], [2, 2]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.mapSeries(object, iterator, function(err, res) {
|
|
* console.log(res); // [1, 3, 2]
|
|
* console.log(order); // [1, 3, 2]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.mapSeries(object, iterator, function(err, res) {
|
|
* console.log(res); // [1, 3, 2]
|
|
* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'c']]
|
|
* });
|
|
*
|
|
*/
|
|
function mapSeries(collection, iterator, callback) {
|
|
callback = callback || noop;
|
|
var size, key, keys, iter, item, result, iterate;
|
|
var sync = false;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
result = [];
|
|
iter = collection[iteratorSymbol]();
|
|
iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!size) {
|
|
return callback(null, []);
|
|
}
|
|
result = result || Array(size);
|
|
iterate();
|
|
|
|
function arrayIterator() {
|
|
iterator(collection[completed], done);
|
|
}
|
|
|
|
function arrayIteratorWithIndex() {
|
|
iterator(collection[completed], completed, done);
|
|
}
|
|
|
|
function symbolIterator() {
|
|
item = iter.next();
|
|
item.done ? callback(null, result) : iterator(item.value, done);
|
|
}
|
|
|
|
function symbolIteratorWithKey() {
|
|
item = iter.next();
|
|
item.done ? callback(null, result) : iterator(item.value, completed, done);
|
|
}
|
|
|
|
function objectIterator() {
|
|
iterator(collection[keys[completed]], done);
|
|
}
|
|
|
|
function objectIteratorWithKey() {
|
|
key = keys[completed];
|
|
iterator(collection[key], key, done);
|
|
}
|
|
|
|
function done(err, res) {
|
|
if (err) {
|
|
iterate = throwError;
|
|
callback = onlyOnce(callback);
|
|
callback(err, createArray(result));
|
|
return;
|
|
}
|
|
result[completed] = res;
|
|
if (++completed === size) {
|
|
iterate = throwError;
|
|
callback(null, result);
|
|
callback = throwError;
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace mapLimit
|
|
* @param {Array|Object} collection
|
|
* @param {number} limit - limit >= 1
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.mapLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // [1, 5, 3, 4, 2]
|
|
* console.log(order); // [1, 3, 5, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.mapLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // [1, 5, 3, 4, 2]
|
|
* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4], [4, 3]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.mapLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // [1, 5, 3, 4, 2]
|
|
* console.log(order); // [1, 3, 5, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.mapLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // [1, 5, 3, 4, 2]
|
|
* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e'], [4, 'd']]
|
|
* });
|
|
*
|
|
*/
|
|
function mapLimit(collection, limit, iterator, callback) {
|
|
callback = callback || noop;
|
|
var size, index, key, keys, iter, item, result, iterate;
|
|
var sync = false;
|
|
var started = 0;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
result = [];
|
|
iter = collection[iteratorSymbol]();
|
|
iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!size || isNaN(limit) || limit < 1) {
|
|
return callback(null, []);
|
|
}
|
|
result = result || Array(size);
|
|
timesSync(limit > size ? size : limit, iterate);
|
|
|
|
function arrayIterator() {
|
|
index = started++;
|
|
if (index < size) {
|
|
iterator(collection[index], createCallback(index));
|
|
}
|
|
}
|
|
|
|
function arrayIteratorWithIndex() {
|
|
index = started++;
|
|
if (index < size) {
|
|
iterator(collection[index], index, createCallback(index));
|
|
}
|
|
}
|
|
|
|
function symbolIterator() {
|
|
item = iter.next();
|
|
if (item.done === false) {
|
|
iterator(item.value, createCallback(started++));
|
|
} else if (completed === started && iterator !== noop) {
|
|
iterator = noop;
|
|
callback(null, result);
|
|
}
|
|
}
|
|
|
|
function symbolIteratorWithKey() {
|
|
item = iter.next();
|
|
if (item.done === false) {
|
|
iterator(item.value, started, createCallback(started++));
|
|
} else if (completed === started && iterator !== noop) {
|
|
iterator = noop;
|
|
callback(null, result);
|
|
}
|
|
}
|
|
|
|
function objectIterator() {
|
|
index = started++;
|
|
if (index < size) {
|
|
iterator(collection[keys[index]], createCallback(index));
|
|
}
|
|
}
|
|
|
|
function objectIteratorWithKey() {
|
|
index = started++;
|
|
if (index < size) {
|
|
key = keys[index];
|
|
iterator(collection[key], key, createCallback(index));
|
|
}
|
|
}
|
|
|
|
function createCallback(index) {
|
|
return function(err, res) {
|
|
if (index === null) {
|
|
throwError();
|
|
}
|
|
if (err) {
|
|
index = null;
|
|
iterate = noop;
|
|
callback = once(callback);
|
|
callback(err, createArray(result));
|
|
return;
|
|
}
|
|
result[index] = res;
|
|
index = null;
|
|
if (++completed === size) {
|
|
iterate = throwError;
|
|
callback(null, result);
|
|
callback = throwError;
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
};
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace mapValuesSeries
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.mapValuesSeries(array, iterator, function(err, res) {
|
|
* console.log(res); // { '0': 1, '1': 3, '2': 2 }
|
|
* console.log(order); // [1, 3, 2]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.mapValuesSeries(array, iterator, function(err, res) {
|
|
* console.log(res); // { '0': 1, '1': 3, '2': 2 }
|
|
* console.log(order); // [[1, 0], [3, 1], [2, 2]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.mapValuesSeries(object, iterator, function(err, res) {
|
|
* console.log(res); // { a: 1, b: 3, c: 2 }
|
|
* console.log(order); // [1, 3, 2]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.mapValuesSeries(object, iterator, function(err, res) {
|
|
* console.log(res); // { a: 1, b: 3, c: 2 }
|
|
* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'c']]
|
|
* });
|
|
*
|
|
*/
|
|
function mapValuesSeries(collection, iterator, callback) {
|
|
callback = callback || noop;
|
|
var size, key, keys, iter, item, iterate;
|
|
var sync = false;
|
|
var result = {};
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
iter = collection[iteratorSymbol]();
|
|
iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!size) {
|
|
return callback(null, result);
|
|
}
|
|
iterate();
|
|
|
|
function arrayIterator() {
|
|
key = completed;
|
|
iterator(collection[completed], done);
|
|
}
|
|
|
|
function arrayIteratorWithIndex() {
|
|
key = completed;
|
|
iterator(collection[completed], completed, done);
|
|
}
|
|
|
|
function symbolIterator() {
|
|
key = completed;
|
|
item = iter.next();
|
|
item.done ? callback(null, result) : iterator(item.value, done);
|
|
}
|
|
|
|
function symbolIteratorWithKey() {
|
|
key = completed;
|
|
item = iter.next();
|
|
item.done ? callback(null, result) : iterator(item.value, completed, done);
|
|
}
|
|
|
|
function objectIterator() {
|
|
key = keys[completed];
|
|
iterator(collection[key], done);
|
|
}
|
|
|
|
function objectIteratorWithKey() {
|
|
key = keys[completed];
|
|
iterator(collection[key], key, done);
|
|
}
|
|
|
|
function done(err, res) {
|
|
if (err) {
|
|
iterate = throwError;
|
|
callback = onlyOnce(callback);
|
|
callback(err, objectClone(result));
|
|
return;
|
|
}
|
|
result[key] = res;
|
|
if (++completed === size) {
|
|
iterate = throwError;
|
|
callback(null, result);
|
|
callback = throwError;
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace mapValuesLimit
|
|
* @param {Array|Object} collection
|
|
* @param {number} limit - limit >= 1
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.mapValuesLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // { '0': 1, '1': 5, '2': 3, '3': 4, '4': 2 }
|
|
* console.log(order); // [1, 3, 5, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.mapValuesLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // { '0': 1, '1': 5, '2': 3, '3': 4, '4': 2 }
|
|
* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4], [4, 3]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.mapValuesLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // { a: 1, b: 5, c: 3, d: 4, e: 2 }
|
|
* console.log(order); // [1, 3, 5, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.mapValuesLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // { a: 1, b: 5, c: 3, d: 4, e: 2 }
|
|
* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e'], [4, 'd']]
|
|
* });
|
|
*
|
|
*/
|
|
function mapValuesLimit(collection, limit, iterator, callback) {
|
|
callback = callback || noop;
|
|
var size, index, key, keys, iter, item, iterate;
|
|
var sync = false;
|
|
var result = {};
|
|
var started = 0;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
iter = collection[iteratorSymbol]();
|
|
iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!size || isNaN(limit) || limit < 1) {
|
|
return callback(null, result);
|
|
}
|
|
timesSync(limit > size ? size : limit, iterate);
|
|
|
|
function arrayIterator() {
|
|
index = started++;
|
|
if (index < size) {
|
|
iterator(collection[index], createCallback(index));
|
|
}
|
|
}
|
|
|
|
function arrayIteratorWithIndex() {
|
|
index = started++;
|
|
if (index < size) {
|
|
iterator(collection[index], index, createCallback(index));
|
|
}
|
|
}
|
|
|
|
function symbolIterator() {
|
|
item = iter.next();
|
|
if (item.done === false) {
|
|
iterator(item.value, createCallback(started++));
|
|
} else if (completed === started && iterator !== noop) {
|
|
iterator = noop;
|
|
callback(null, result);
|
|
}
|
|
}
|
|
|
|
function symbolIteratorWithKey() {
|
|
item = iter.next();
|
|
if (item.done === false) {
|
|
iterator(item.value, started, createCallback(started++));
|
|
} else if (completed === started && iterator !== noop) {
|
|
iterator = noop;
|
|
callback(null, result);
|
|
}
|
|
}
|
|
|
|
function objectIterator() {
|
|
index = started++;
|
|
if (index < size) {
|
|
key = keys[index];
|
|
iterator(collection[key], createCallback(key));
|
|
}
|
|
}
|
|
|
|
function objectIteratorWithKey() {
|
|
index = started++;
|
|
if (index < size) {
|
|
key = keys[index];
|
|
iterator(collection[key], key, createCallback(key));
|
|
}
|
|
}
|
|
|
|
function createCallback(key) {
|
|
return function(err, res) {
|
|
if (key === null) {
|
|
throwError();
|
|
}
|
|
if (err) {
|
|
key = null;
|
|
iterate = noop;
|
|
callback = once(callback);
|
|
callback(err, objectClone(result));
|
|
return;
|
|
}
|
|
result[key] = res;
|
|
key = null;
|
|
if (++completed === size) {
|
|
callback(null, result);
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
};
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {Function} arrayEach
|
|
* @param {Function} baseEach
|
|
* @param {Function} symbolEach
|
|
* @param {boolean} bool
|
|
*/
|
|
function createDetect(arrayEach, baseEach, symbolEach, bool) {
|
|
return function(collection, iterator, callback) {
|
|
callback = callback || noop;
|
|
var size, keys;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
arrayEach(collection, iterator, createCallback);
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = symbolEach(collection, iterator, createCallback);
|
|
size && size === completed && callback(null);
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
baseEach(collection, iterator, createCallback, keys);
|
|
}
|
|
if (!size) {
|
|
callback(null);
|
|
}
|
|
|
|
function createCallback(value) {
|
|
var called = false;
|
|
return function done(err, res) {
|
|
if (called) {
|
|
throwError();
|
|
}
|
|
called = true;
|
|
if (err) {
|
|
callback = once(callback);
|
|
callback(err);
|
|
} else if (!!res === bool) {
|
|
callback = once(callback);
|
|
callback(null, value);
|
|
} else if (++completed === size) {
|
|
callback(null);
|
|
}
|
|
};
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {boolean} bool
|
|
*/
|
|
function createDetectSeries(bool) {
|
|
return function(collection, iterator, callback) {
|
|
callback = onlyOnce(callback || noop);
|
|
var size, key, value, keys, iter, item, iterate;
|
|
var sync = false;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
iter = collection[iteratorSymbol]();
|
|
iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!size) {
|
|
return callback(null);
|
|
}
|
|
iterate();
|
|
|
|
function arrayIterator() {
|
|
value = collection[completed];
|
|
iterator(value, done);
|
|
}
|
|
|
|
function arrayIteratorWithIndex() {
|
|
value = collection[completed];
|
|
iterator(value, completed, done);
|
|
}
|
|
|
|
function symbolIterator() {
|
|
item = iter.next();
|
|
value = item.value;
|
|
item.done ? callback(null) : iterator(value, done);
|
|
}
|
|
|
|
function symbolIteratorWithKey() {
|
|
item = iter.next();
|
|
value = item.value;
|
|
item.done ? callback(null) : iterator(value, completed, done);
|
|
}
|
|
|
|
function objectIterator() {
|
|
value = collection[keys[completed]];
|
|
iterator(value, done);
|
|
}
|
|
|
|
function objectIteratorWithKey() {
|
|
key = keys[completed];
|
|
value = collection[key];
|
|
iterator(value, key, done);
|
|
}
|
|
|
|
function done(err, res) {
|
|
if (err) {
|
|
callback(err);
|
|
} else if (!!res === bool) {
|
|
iterate = throwError;
|
|
callback(null, value);
|
|
} else if (++completed === size) {
|
|
iterate = throwError;
|
|
callback(null);
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {boolean} bool
|
|
*/
|
|
function createDetectLimit(bool) {
|
|
return function(collection, limit, iterator, callback) {
|
|
callback = callback || noop;
|
|
var size, index, key, value, keys, iter, item, iterate;
|
|
var sync = false;
|
|
var started = 0;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
iter = collection[iteratorSymbol]();
|
|
iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!size || isNaN(limit) || limit < 1) {
|
|
return callback(null);
|
|
}
|
|
timesSync(limit > size ? size : limit, iterate);
|
|
|
|
function arrayIterator() {
|
|
index = started++;
|
|
if (index < size) {
|
|
value = collection[index];
|
|
iterator(value, createCallback(value));
|
|
}
|
|
}
|
|
|
|
function arrayIteratorWithIndex() {
|
|
index = started++;
|
|
if (index < size) {
|
|
value = collection[index];
|
|
iterator(value, index, createCallback(value));
|
|
}
|
|
}
|
|
|
|
function symbolIterator() {
|
|
item = iter.next();
|
|
if (item.done === false) {
|
|
started++;
|
|
value = item.value;
|
|
iterator(value, createCallback(value));
|
|
} else if (completed === started && iterator !== noop) {
|
|
iterator = noop;
|
|
callback(null);
|
|
}
|
|
}
|
|
|
|
function symbolIteratorWithKey() {
|
|
item = iter.next();
|
|
if (item.done === false) {
|
|
value = item.value;
|
|
iterator(value, started++, createCallback(value));
|
|
} else if (completed === started && iterator !== noop) {
|
|
iterator = noop;
|
|
callback(null);
|
|
}
|
|
}
|
|
|
|
function objectIterator() {
|
|
index = started++;
|
|
if (index < size) {
|
|
value = collection[keys[index]];
|
|
iterator(value, createCallback(value));
|
|
}
|
|
}
|
|
|
|
function objectIteratorWithKey() {
|
|
if (started < size) {
|
|
key = keys[started++];
|
|
value = collection[key];
|
|
iterator(value, key, createCallback(value));
|
|
}
|
|
}
|
|
|
|
function createCallback(value) {
|
|
var called = false;
|
|
return function(err, res) {
|
|
if (called) {
|
|
throwError();
|
|
}
|
|
called = true;
|
|
if (err) {
|
|
iterate = noop;
|
|
callback = once(callback);
|
|
callback(err);
|
|
} else if (!!res === bool) {
|
|
iterate = noop;
|
|
callback = once(callback);
|
|
callback(null, value);
|
|
} else if (++completed === size) {
|
|
callback(null);
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
};
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {Function} arrayEach
|
|
* @param {Function} baseEach
|
|
* @param {Function} symbolEach
|
|
* @param {boolean} bool
|
|
*/
|
|
function createPick(arrayEach, baseEach, symbolEach, bool) {
|
|
return function(collection, iterator, callback) {
|
|
callback = callback || noop;
|
|
var size, keys;
|
|
var completed = 0;
|
|
var result = {};
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
arrayEach(collection, iterator, createCallback);
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = symbolEach(collection, iterator, createCallback);
|
|
size && size === completed && callback(null, result);
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
baseEach(collection, iterator, createCallback, keys);
|
|
}
|
|
if (!size) {
|
|
return callback(null, {});
|
|
}
|
|
|
|
function createCallback(key, value) {
|
|
return function done(err, res) {
|
|
if (key === null) {
|
|
throwError();
|
|
}
|
|
if (err) {
|
|
key = null;
|
|
callback = once(callback);
|
|
callback(err, objectClone(result));
|
|
return;
|
|
}
|
|
if (!!res === bool) {
|
|
result[key] = value;
|
|
}
|
|
key = null;
|
|
if (++completed === size) {
|
|
callback(null, result);
|
|
}
|
|
};
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {boolean} bool
|
|
*/
|
|
function createPickSeries(bool) {
|
|
return function(collection, iterator, callback) {
|
|
callback = onlyOnce(callback || noop);
|
|
var size, key, value, keys, iter, item, iterate;
|
|
var sync = false;
|
|
var result = {};
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
iter = collection[iteratorSymbol]();
|
|
iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!size) {
|
|
return callback(null, {});
|
|
}
|
|
iterate();
|
|
|
|
function arrayIterator() {
|
|
key = completed;
|
|
value = collection[completed];
|
|
iterator(value, done);
|
|
}
|
|
|
|
function arrayIteratorWithIndex() {
|
|
key = completed;
|
|
value = collection[completed];
|
|
iterator(value, completed, done);
|
|
}
|
|
|
|
function symbolIterator() {
|
|
key = completed;
|
|
item = iter.next();
|
|
value = item.value;
|
|
item.done ? callback(null, result) : iterator(value, done);
|
|
}
|
|
|
|
function symbolIteratorWithKey() {
|
|
key = completed;
|
|
item = iter.next();
|
|
value = item.value;
|
|
item.done ? callback(null, result) : iterator(value, key, done);
|
|
}
|
|
|
|
function objectIterator() {
|
|
key = keys[completed];
|
|
value = collection[key];
|
|
iterator(value, done);
|
|
}
|
|
|
|
function objectIteratorWithKey() {
|
|
key = keys[completed];
|
|
value = collection[key];
|
|
iterator(value, key, done);
|
|
}
|
|
|
|
function done(err, res) {
|
|
if (err) {
|
|
callback(err, result);
|
|
return;
|
|
}
|
|
if (!!res === bool) {
|
|
result[key] = value;
|
|
}
|
|
if (++completed === size) {
|
|
iterate = throwError;
|
|
callback(null, result);
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {boolean} bool
|
|
*/
|
|
function createPickLimit(bool) {
|
|
return function(collection, limit, iterator, callback) {
|
|
callback = callback || noop;
|
|
var size, index, key, value, keys, iter, item, iterate;
|
|
var sync = false;
|
|
var result = {};
|
|
var started = 0;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
iter = collection[iteratorSymbol]();
|
|
iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!size || isNaN(limit) || limit < 1) {
|
|
return callback(null, {});
|
|
}
|
|
timesSync(limit > size ? size : limit, iterate);
|
|
|
|
function arrayIterator() {
|
|
index = started++;
|
|
if (index < size) {
|
|
value = collection[index];
|
|
iterator(value, createCallback(value, index));
|
|
}
|
|
}
|
|
|
|
function arrayIteratorWithIndex() {
|
|
index = started++;
|
|
if (index < size) {
|
|
value = collection[index];
|
|
iterator(value, index, createCallback(value, index));
|
|
}
|
|
}
|
|
|
|
function symbolIterator() {
|
|
item = iter.next();
|
|
if (item.done === false) {
|
|
value = item.value;
|
|
iterator(value, createCallback(value, started++));
|
|
} else if (completed === started && iterator !== noop) {
|
|
iterator = noop;
|
|
callback(null, result);
|
|
}
|
|
}
|
|
|
|
function symbolIteratorWithKey() {
|
|
item = iter.next();
|
|
if (item.done === false) {
|
|
value = item.value;
|
|
iterator(value, started, createCallback(value, started++));
|
|
} else if (completed === started && iterator !== noop) {
|
|
iterator = noop;
|
|
callback(null, result);
|
|
}
|
|
}
|
|
|
|
function objectIterator() {
|
|
if (started < size) {
|
|
key = keys[started++];
|
|
value = collection[key];
|
|
iterator(value, createCallback(value, key));
|
|
}
|
|
}
|
|
|
|
function objectIteratorWithKey() {
|
|
if (started < size) {
|
|
key = keys[started++];
|
|
value = collection[key];
|
|
iterator(value, key, createCallback(value, key));
|
|
}
|
|
}
|
|
|
|
function createCallback(value, key) {
|
|
return function(err, res) {
|
|
if (key === null) {
|
|
throwError();
|
|
}
|
|
if (err) {
|
|
key = null;
|
|
iterate = noop;
|
|
callback = once(callback);
|
|
callback(err, objectClone(result));
|
|
return;
|
|
}
|
|
if (!!res === bool) {
|
|
result[key] = value;
|
|
}
|
|
key = null;
|
|
if (++completed === size) {
|
|
iterate = throwError;
|
|
callback = onlyOnce(callback);
|
|
callback(null, result);
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
};
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace reduce
|
|
* @param {Array|Object} collection
|
|
* @param {*} result
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var collection = [1, 3, 2, 4];
|
|
* var iterator = function(result, num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, result + num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.reduce(collection, 0, iterator, function(err, res) {
|
|
* console.log(res); // 10
|
|
* console.log(order); // [1, 3, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var collection = [1, 3, 2, 4];
|
|
* var iterator = function(result, num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, result + num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.reduce(collection, '', iterator, function(err, res) {
|
|
* console.log(res); // '1324'
|
|
* console.log(order); // [[1, 0], [3, 1], [2, 2], [4, 3]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2, d: 4 };
|
|
* var iterator = function(result, num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, result + num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.reduce(collection, '', iterator, function(err, res) {
|
|
* console.log(res); // '1324'
|
|
* console.log(order); // [1, 3, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2, d: 4 };
|
|
* var iterator = function(result, num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, result + num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.reduce(collection, 0, iterator, function(err, res) {
|
|
* console.log(res); // 10
|
|
* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'b'], [4, 'd']]
|
|
* });
|
|
*
|
|
*/
|
|
function reduce(collection, result, iterator, callback) {
|
|
callback = onlyOnce(callback || noop);
|
|
var size, key, keys, iter, item, iterate;
|
|
var sync = false;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
iterate = iterator.length === 4 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
iter = collection[iteratorSymbol]();
|
|
iterate = iterator.length === 4 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
iterate = iterator.length === 4 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!size) {
|
|
return callback(null, result);
|
|
}
|
|
iterate(result);
|
|
|
|
function arrayIterator(result) {
|
|
iterator(result, collection[completed], done);
|
|
}
|
|
|
|
function arrayIteratorWithIndex(result) {
|
|
iterator(result, collection[completed], completed, done);
|
|
}
|
|
|
|
function symbolIterator(result) {
|
|
item = iter.next();
|
|
item.done ? callback(null, result) : iterator(result, item.value, done);
|
|
}
|
|
|
|
function symbolIteratorWithKey(result) {
|
|
item = iter.next();
|
|
item.done ? callback(null, result) : iterator(result, item.value, completed, done);
|
|
}
|
|
|
|
function objectIterator(result) {
|
|
iterator(result, collection[keys[completed]], done);
|
|
}
|
|
|
|
function objectIteratorWithKey(result) {
|
|
key = keys[completed];
|
|
iterator(result, collection[key], key, done);
|
|
}
|
|
|
|
function done(err, result) {
|
|
if (err) {
|
|
callback(err, result);
|
|
} else if (++completed === size) {
|
|
iterator = throwError;
|
|
callback(null, result);
|
|
} else if (sync) {
|
|
nextTick(function() {
|
|
iterate(result);
|
|
});
|
|
} else {
|
|
sync = true;
|
|
iterate(result);
|
|
}
|
|
sync = false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace reduceRight
|
|
* @param {Array|Object} collection
|
|
* @param {*} result
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var collection = [1, 3, 2, 4];
|
|
* var iterator = function(result, num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, result + num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.reduceRight(collection, 0, iterator, function(err, res) {
|
|
* console.log(res); // 10
|
|
* console.log(order); // [4, 2, 3, 1]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var collection = [1, 3, 2, 4];
|
|
* var iterator = function(result, num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, result + num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.reduceRight(collection, '', iterator, function(err, res) {
|
|
* console.log(res); // '4231'
|
|
* console.log(order); // [[4, 3], [2, 2], [3, 1], [1, 0]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2, d: 4 };
|
|
* var iterator = function(result, num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, result + num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.reduceRight(collection, '', iterator, function(err, res) {
|
|
* console.log(res); // '4231'
|
|
* console.log(order); // [4, 2, 3, 1]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2, d: 4 };
|
|
* var iterator = function(result, num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, result + num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.reduceRight(collection, 0, iterator, function(err, res) {
|
|
* console.log(res); // 10
|
|
* console.log(order); // [[4, 3], [2, 2], [3, 1], [1, 0]]
|
|
* });
|
|
*
|
|
*/
|
|
function reduceRight(collection, result, iterator, callback) {
|
|
callback = onlyOnce(callback || noop);
|
|
var resIndex, index, key, keys, iter, item, col, iterate;
|
|
var sync = false;
|
|
|
|
if (isArray(collection)) {
|
|
resIndex = collection.length;
|
|
iterate = iterator.length === 4 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
col = [];
|
|
iter = collection[iteratorSymbol]();
|
|
index = -1;
|
|
while ((item = iter.next()).done === false) {
|
|
col[++index] = item.value;
|
|
}
|
|
collection = col;
|
|
resIndex = col.length;
|
|
iterate = iterator.length === 4 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
resIndex = keys.length;
|
|
iterate = iterator.length === 4 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!resIndex) {
|
|
return callback(null, result);
|
|
}
|
|
iterate(result);
|
|
|
|
function arrayIterator(result) {
|
|
iterator(result, collection[--resIndex], done);
|
|
}
|
|
|
|
function arrayIteratorWithIndex(result) {
|
|
iterator(result, collection[--resIndex], resIndex, done);
|
|
}
|
|
|
|
function objectIterator(result) {
|
|
iterator(result, collection[keys[--resIndex]], done);
|
|
}
|
|
|
|
function objectIteratorWithKey(result) {
|
|
key = keys[--resIndex];
|
|
iterator(result, collection[key], key, done);
|
|
}
|
|
|
|
function done(err, result) {
|
|
if (err) {
|
|
callback(err, result);
|
|
} else if (resIndex === 0) {
|
|
iterate = throwError;
|
|
callback(null, result);
|
|
} else if (sync) {
|
|
nextTick(function() {
|
|
iterate(result);
|
|
});
|
|
} else {
|
|
sync = true;
|
|
iterate(result);
|
|
}
|
|
sync = false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {Function} arrayEach
|
|
* @param {Function} baseEach
|
|
* @param {Function} symbolEach
|
|
*/
|
|
function createTransform(arrayEach, baseEach, symbolEach) {
|
|
return function transform(collection, accumulator, iterator, callback) {
|
|
if (arguments.length === 3) {
|
|
callback = iterator;
|
|
iterator = accumulator;
|
|
accumulator = undefined;
|
|
}
|
|
callback = callback || noop;
|
|
var size, keys, result;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
result = accumulator !== undefined ? accumulator : [];
|
|
arrayEach(collection, result, iterator, done);
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
result = accumulator !== undefined ? accumulator : {};
|
|
size = symbolEach(collection, result, iterator, done);
|
|
size && size === completed && callback(null, result);
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
result = accumulator !== undefined ? accumulator : {};
|
|
baseEach(collection, result, iterator, done, keys);
|
|
}
|
|
if (!size) {
|
|
callback(null, accumulator !== undefined ? accumulator : result || {});
|
|
}
|
|
|
|
function done(err, bool) {
|
|
if (err) {
|
|
callback = once(callback);
|
|
callback(err, isArray(result) ? createArray(result) : objectClone(result));
|
|
} else if (++completed === size) {
|
|
callback(null, result);
|
|
} else if (bool === false) {
|
|
callback = once(callback);
|
|
callback(null, isArray(result) ? createArray(result) : objectClone(result));
|
|
}
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace transformSeries
|
|
* @param {Array|Object} collection
|
|
* @param {Array|Object|Function} [accumulator]
|
|
* @param {Function} [iterator]
|
|
* @param {Function} [callback]
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var collection = [1, 3, 2, 4];
|
|
* var iterator = function(result, num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* result.push(num)
|
|
* done();
|
|
* }, num * 10);
|
|
* };
|
|
* async.transformSeries(collection, iterator, function(err, res) {
|
|
* console.log(res); // [1, 3, 2, 4]
|
|
* console.log(order); // [1, 3, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index and accumulator
|
|
* var order = [];
|
|
* var collection = [1, 3, 2, 4];
|
|
* var iterator = function(result, num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* result[index] = num;
|
|
* done();
|
|
* }, num * 10);
|
|
* };
|
|
* async.transformSeries(collection, {}, iterator, function(err, res) {
|
|
* console.log(res); // { '0': 1, '1': 3, '2': 2, '3': 4 }
|
|
* console.log(order); // [[1, 0], [3, 1], [2, 2], [4, 3]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with accumulator
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2, d: 4 };
|
|
* var iterator = function(result, num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* result.push(num);
|
|
* done();
|
|
* }, num * 10);
|
|
* };
|
|
* async.transformSeries(collection, [], iterator, function(err, res) {
|
|
* console.log(res); // [1, 3, 2, 4]
|
|
* console.log(order); // [1, 3, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2, d: 4 };
|
|
* var iterator = function(result, num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* result[key] = num;
|
|
* done();
|
|
* }, num * 10);
|
|
* };
|
|
* async.transformSeries(collection, iterator, function(err, res) {
|
|
* console.log(res); // { a: 1, b: 3, c: 2, d: 4 }
|
|
* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'b'], [4, 'd']]
|
|
* });
|
|
*
|
|
*/
|
|
function transformSeries(collection, accumulator, iterator, callback) {
|
|
if (arguments.length === 3) {
|
|
callback = iterator;
|
|
iterator = accumulator;
|
|
accumulator = undefined;
|
|
}
|
|
callback = onlyOnce(callback || noop);
|
|
var size, key, keys, iter, item, iterate, result;
|
|
var sync = false;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
result = accumulator !== undefined ? accumulator : [];
|
|
iterate = iterator.length === 4 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
iter = collection[iteratorSymbol]();
|
|
result = accumulator !== undefined ? accumulator : {};
|
|
iterate = iterator.length === 4 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
result = accumulator !== undefined ? accumulator : {};
|
|
iterate = iterator.length === 4 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!size) {
|
|
return callback(null, accumulator !== undefined ? accumulator : result || {});
|
|
}
|
|
iterate();
|
|
|
|
function arrayIterator() {
|
|
iterator(result, collection[completed], done);
|
|
}
|
|
|
|
function arrayIteratorWithIndex() {
|
|
iterator(result, collection[completed], completed, done);
|
|
}
|
|
|
|
function symbolIterator() {
|
|
item = iter.next();
|
|
item.done ? callback(null, result) : iterator(result, item.value, done);
|
|
}
|
|
|
|
function symbolIteratorWithKey() {
|
|
item = iter.next();
|
|
item.done ? callback(null, result) : iterator(result, item.value, completed, done);
|
|
}
|
|
|
|
function objectIterator() {
|
|
iterator(result, collection[keys[completed]], done);
|
|
}
|
|
|
|
function objectIteratorWithKey() {
|
|
key = keys[completed];
|
|
iterator(result, collection[key], key, done);
|
|
}
|
|
|
|
function done(err, bool) {
|
|
if (err) {
|
|
callback(err, result);
|
|
} else if (++completed === size || bool === false) {
|
|
iterate = throwError;
|
|
callback(null, result);
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace transformLimit
|
|
* @param {Array|Object} collection
|
|
* @param {number} limit - limit >= 1
|
|
* @param {Array|Object|Function} [accumulator]
|
|
* @param {Function} [iterator]
|
|
* @param {Function} [callback]
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(result, num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* result.push(num);
|
|
* done();
|
|
* }, num * 10);
|
|
* };
|
|
* async.transformLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // [1, 3, 5, 2, 4]
|
|
* console.log(order); // [1, 3, 5, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index and accumulator
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(result, num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* result[index] = key;
|
|
* done();
|
|
* }, num * 10);
|
|
* };
|
|
* async.transformLimit(array, 2, {}, iterator, function(err, res) {
|
|
* console.log(res); // { '0': 1, '1': 5, '2': 3, '3': 4, '4': 2 }
|
|
* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4], [4, 3]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with accumulator
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(result, num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* result.push(num);
|
|
* done();
|
|
* }, num * 10);
|
|
* };
|
|
* async.transformLimit(object, 2, [], iterator, function(err, res) {
|
|
* console.log(res); // [1, 3, 5, 2, 4]
|
|
* console.log(order); // [1, 3, 5, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(result, num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* result[key] = num;
|
|
* done();
|
|
* }, num * 10);
|
|
* };
|
|
* async.transformLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e'], [4, 'd']]
|
|
* });
|
|
*
|
|
*/
|
|
function transformLimit(collection, limit, accumulator, iterator, callback) {
|
|
if (arguments.length === 4) {
|
|
callback = iterator;
|
|
iterator = accumulator;
|
|
accumulator = undefined;
|
|
}
|
|
callback = callback || noop;
|
|
var size, index, key, keys, iter, item, iterate, result;
|
|
var sync = false;
|
|
var started = 0;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
result = accumulator !== undefined ? accumulator : [];
|
|
iterate = iterator.length === 4 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
iter = collection[iteratorSymbol]();
|
|
result = accumulator !== undefined ? accumulator : {};
|
|
iterate = iterator.length === 4 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
result = accumulator !== undefined ? accumulator : {};
|
|
iterate = iterator.length === 4 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!size || isNaN(limit) || limit < 1) {
|
|
return callback(null, accumulator !== undefined ? accumulator : result || {});
|
|
}
|
|
timesSync(limit > size ? size : limit, iterate);
|
|
|
|
function arrayIterator() {
|
|
index = started++;
|
|
if (index < size) {
|
|
iterator(result, collection[index], onlyOnce(done));
|
|
}
|
|
}
|
|
|
|
function arrayIteratorWithIndex() {
|
|
index = started++;
|
|
if (index < size) {
|
|
iterator(result, collection[index], index, onlyOnce(done));
|
|
}
|
|
}
|
|
|
|
function symbolIterator() {
|
|
item = iter.next();
|
|
if (item.done === false) {
|
|
started++;
|
|
iterator(result, item.value, onlyOnce(done));
|
|
} else if (completed === started && iterator !== noop) {
|
|
iterator = noop;
|
|
callback(null, result);
|
|
}
|
|
}
|
|
|
|
function symbolIteratorWithKey() {
|
|
item = iter.next();
|
|
if (item.done === false) {
|
|
iterator(result, item.value, started++, onlyOnce(done));
|
|
} else if (completed === started && iterator !== noop) {
|
|
iterator = noop;
|
|
callback(null, result);
|
|
}
|
|
}
|
|
|
|
function objectIterator() {
|
|
index = started++;
|
|
if (index < size) {
|
|
iterator(result, collection[keys[index]], onlyOnce(done));
|
|
}
|
|
}
|
|
|
|
function objectIteratorWithKey() {
|
|
index = started++;
|
|
if (index < size) {
|
|
key = keys[index];
|
|
iterator(result, collection[key], key, onlyOnce(done));
|
|
}
|
|
}
|
|
|
|
function done(err, bool) {
|
|
if (err || bool === false) {
|
|
iterate = noop;
|
|
callback(err || null, isArray(result) ? createArray(result) : objectClone(result));
|
|
callback = noop;
|
|
} else if (++completed === size) {
|
|
iterator = noop;
|
|
callback(null, result);
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {function} arrayEach
|
|
* @param {function} baseEach
|
|
* @param {function} symbolEach
|
|
*/
|
|
function createSortBy(arrayEach, baseEach, symbolEach) {
|
|
return function sortBy(collection, iterator, callback) {
|
|
callback = callback || noop;
|
|
var size, array, criteria;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
array = Array(size);
|
|
criteria = Array(size);
|
|
arrayEach(collection, iterator, createCallback);
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
array = [];
|
|
criteria = [];
|
|
size = symbolEach(collection, iterator, createCallback);
|
|
size && size === completed && callback(null, sortByCriteria(array, criteria));
|
|
} else if (typeof collection === obj) {
|
|
var keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
array = Array(size);
|
|
criteria = Array(size);
|
|
baseEach(collection, iterator, createCallback, keys);
|
|
}
|
|
if (!size) {
|
|
callback(null, []);
|
|
}
|
|
|
|
function createCallback(index, value) {
|
|
var called = false;
|
|
array[index] = value;
|
|
return function done(err, criterion) {
|
|
if (called) {
|
|
throwError();
|
|
}
|
|
called = true;
|
|
criteria[index] = criterion;
|
|
if (err) {
|
|
callback = once(callback);
|
|
callback(err);
|
|
} else if (++completed === size) {
|
|
callback(null, sortByCriteria(array, criteria));
|
|
}
|
|
};
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace sortBySeries
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.sortBySeries(array, iterator, function(err, res) {
|
|
* console.log(res); // [1, 2, 3];
|
|
* console.log(order); // [1, 3, 2]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.sortBySeries(array, iterator, function(err, res) {
|
|
* console.log(res); // [1, 2, 3]
|
|
* console.log(order); // [[1, 0], [3, 1], [2, 2]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.sortBySeries(object, iterator, function(err, res) {
|
|
* console.log(res); // [1, 2, 3]
|
|
* console.log(order); // [1, 3, 2]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.sortBySeries(object, iterator, function(err, res) {
|
|
* console.log(res); // [1, 2, 3]
|
|
* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'c']]
|
|
* });
|
|
*
|
|
*/
|
|
function sortBySeries(collection, iterator, callback) {
|
|
callback = onlyOnce(callback || noop);
|
|
var size, key, value, keys, iter, item, array, criteria, iterate;
|
|
var sync = false;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
array = collection;
|
|
criteria = Array(size);
|
|
iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
array = [];
|
|
criteria = [];
|
|
iter = collection[iteratorSymbol]();
|
|
iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
array = Array(size);
|
|
criteria = Array(size);
|
|
iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!size) {
|
|
return callback(null, []);
|
|
}
|
|
iterate();
|
|
|
|
function arrayIterator() {
|
|
value = collection[completed];
|
|
iterator(value, done);
|
|
}
|
|
|
|
function arrayIteratorWithIndex() {
|
|
value = collection[completed];
|
|
iterator(value, completed, done);
|
|
}
|
|
|
|
function symbolIterator() {
|
|
item = iter.next();
|
|
if (item.done) {
|
|
return callback(null, sortByCriteria(array, criteria));
|
|
}
|
|
value = item.value;
|
|
array[completed] = value;
|
|
iterator(value, done);
|
|
}
|
|
|
|
function symbolIteratorWithKey() {
|
|
item = iter.next();
|
|
if (item.done) {
|
|
return callback(null, sortByCriteria(array, criteria));
|
|
}
|
|
value = item.value;
|
|
array[completed] = value;
|
|
iterator(value, completed, done);
|
|
}
|
|
|
|
function objectIterator() {
|
|
value = collection[keys[completed]];
|
|
array[completed] = value;
|
|
iterator(value, done);
|
|
}
|
|
|
|
function objectIteratorWithKey() {
|
|
key = keys[completed];
|
|
value = collection[key];
|
|
array[completed] = value;
|
|
iterator(value, key, done);
|
|
}
|
|
|
|
function done(err, criterion) {
|
|
criteria[completed] = criterion;
|
|
if (err) {
|
|
callback(err);
|
|
} else if (++completed === size) {
|
|
iterate = throwError;
|
|
callback(null, sortByCriteria(array, criteria));
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace sortByLimit
|
|
* @param {Array|Object} collection
|
|
* @param {number} limit - limit >= 1
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.sortByLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // [1, 2, 3, 4, 5]
|
|
* console.log(order); // [1, 3, 5, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.sortByLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // [1, 2, 3, 4, 5]
|
|
* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4], [4, 3]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.sortByLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // [1, 2, 3, 4, 5]
|
|
* console.log(order); // [1, 3, 5, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.sortByLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // [1, 2, 3, 4, 5]
|
|
* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e'], [4, 'd']]
|
|
* });
|
|
*
|
|
*/
|
|
function sortByLimit(collection, limit, iterator, callback) {
|
|
callback = callback || noop;
|
|
var size, index, key, value, array, keys, iter, item, criteria, iterate;
|
|
var sync = false;
|
|
var started = 0;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
array = collection;
|
|
iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
iter = collection[iteratorSymbol]();
|
|
array = [];
|
|
criteria = [];
|
|
iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
array = Array(size);
|
|
iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!size || isNaN(limit) || limit < 1) {
|
|
return callback(null, []);
|
|
}
|
|
criteria = criteria || Array(size);
|
|
timesSync(limit > size ? size : limit, iterate);
|
|
|
|
function arrayIterator() {
|
|
if (started < size) {
|
|
value = collection[started];
|
|
iterator(value, createCallback(value, started++));
|
|
}
|
|
}
|
|
|
|
function arrayIteratorWithIndex() {
|
|
index = started++;
|
|
if (index < size) {
|
|
value = collection[index];
|
|
iterator(value, index, createCallback(value, index));
|
|
}
|
|
}
|
|
|
|
function symbolIterator() {
|
|
item = iter.next();
|
|
if (item.done === false) {
|
|
value = item.value;
|
|
array[started] = value;
|
|
iterator(value, createCallback(value, started++));
|
|
} else if (completed === started && iterator !== noop) {
|
|
iterator = noop;
|
|
callback(null, sortByCriteria(array, criteria));
|
|
}
|
|
}
|
|
|
|
function symbolIteratorWithKey() {
|
|
item = iter.next();
|
|
if (item.done === false) {
|
|
value = item.value;
|
|
array[started] = value;
|
|
iterator(value, started, createCallback(value, started++));
|
|
} else if (completed === started && iterator !== noop) {
|
|
iterator = noop;
|
|
callback(null, sortByCriteria(array, criteria));
|
|
}
|
|
}
|
|
|
|
function objectIterator() {
|
|
if (started < size) {
|
|
value = collection[keys[started]];
|
|
array[started] = value;
|
|
iterator(value, createCallback(value, started++));
|
|
}
|
|
}
|
|
|
|
function objectIteratorWithKey() {
|
|
if (started < size) {
|
|
key = keys[started];
|
|
value = collection[key];
|
|
array[started] = value;
|
|
iterator(value, key, createCallback(value, started++));
|
|
}
|
|
}
|
|
|
|
function createCallback(value, index) {
|
|
var called = false;
|
|
return function(err, criterion) {
|
|
if (called) {
|
|
throwError();
|
|
}
|
|
called = true;
|
|
criteria[index] = criterion;
|
|
if (err) {
|
|
iterate = noop;
|
|
callback(err);
|
|
callback = noop;
|
|
} else if (++completed === size) {
|
|
callback(null, sortByCriteria(array, criteria));
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
};
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace some
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.some(array, iterator, function(err, res) {
|
|
* console.log(res); // true
|
|
* console.log(order); // [1]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.some(array, iterator, function(err, res) {
|
|
* console.log(res); // true
|
|
* console.log(order); // [[1, 0]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.some(object, iterator, function(err, res) {
|
|
* console.log(res); // true
|
|
* console.log(order); // [1]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.some(object, iterator, function(err, res) {
|
|
* console.log(res); // true
|
|
* console.log(order); // [[1, 'a']]
|
|
* });
|
|
*
|
|
*/
|
|
function some(collection, iterator, callback) {
|
|
callback = callback || noop;
|
|
detect(collection, iterator, done);
|
|
|
|
function done(err, res) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
callback(null, !!res);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace someSeries
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.someSeries(array, iterator, function(err, res) {
|
|
* console.log(res); // true
|
|
* console.log(order); // [1]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.someSeries(array, iterator, function(err, res) {
|
|
* console.log(res); // true
|
|
* console.log(order); // [[1, 0]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.someSeries(object, iterator, function(err, res) {
|
|
* console.log(res); // true
|
|
* console.log(order); // [1]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.someSeries(object, iterator, function(err, res) {
|
|
* console.log(res); // true
|
|
* console.log(order); // [[1, 'a']]
|
|
* });
|
|
*
|
|
*/
|
|
function someSeries(collection, iterator, callback) {
|
|
callback = callback || noop;
|
|
detectSeries(collection, iterator, done);
|
|
|
|
function done(err, res) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
callback(null, !!res);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace someLimit
|
|
* @param {Array|Object} collection
|
|
* @param {number} limit - limit >= 1
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.someLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // true
|
|
* console.log(order); // [1]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.someLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // true
|
|
* console.log(order); // [[1, 0]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.someLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // true
|
|
* console.log(order); // [1]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num % 2);
|
|
* }, num * 10);
|
|
* };
|
|
* async.someLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // true
|
|
* console.log(order); // [[1, 'a']]
|
|
* });
|
|
*
|
|
*/
|
|
function someLimit(collection, limit, iterator, callback) {
|
|
callback = callback || noop;
|
|
detectLimit(collection, limit, iterator, done);
|
|
|
|
function done(err, res) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
callback(null, !!res);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {Function} arrayEach
|
|
* @param {Function} baseEach
|
|
* @param {Function} symbolEach
|
|
*/
|
|
function createEvery(arrayEach, baseEach, symbolEach) {
|
|
var deny = createDetect(arrayEach, baseEach, symbolEach, false);
|
|
|
|
return function every(collection, iterator, callback) {
|
|
callback = callback || noop;
|
|
deny(collection, iterator, done);
|
|
|
|
function done(err, res) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
callback(null, !res);
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function createEverySeries() {
|
|
var denySeries = createDetectSeries(false);
|
|
|
|
return function everySeries(collection, iterator, callback) {
|
|
callback = callback || noop;
|
|
denySeries(collection, iterator, done);
|
|
|
|
function done(err, res) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
callback(null, !res);
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function createEveryLimit() {
|
|
var denyLimit = createDetectLimit(false);
|
|
|
|
return function everyLimit(collection, limit, iterator, callback) {
|
|
callback = callback || noop;
|
|
denyLimit(collection, limit, iterator, done);
|
|
|
|
function done(err, res) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
callback(null, !res);
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {Function} arrayEach
|
|
* @param {Function} baseEach
|
|
* @param {Function} symbolEach
|
|
*/
|
|
function createConcat(arrayEach, baseEach, symbolEach) {
|
|
return function concat(collection, iterator, callback) {
|
|
callback = callback || noop;
|
|
var size, result;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
result = Array(size);
|
|
arrayEach(collection, iterator, createCallback);
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
result = [];
|
|
size = symbolEach(collection, iterator, createCallback);
|
|
size && size === completed && callback(null, result);
|
|
} else if (typeof collection === obj) {
|
|
var keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
result = Array(size);
|
|
baseEach(collection, iterator, createCallback, keys);
|
|
}
|
|
if (!size) {
|
|
callback(null, []);
|
|
}
|
|
|
|
function createCallback(index) {
|
|
return function done(err, res) {
|
|
if (index === null) {
|
|
throwError();
|
|
}
|
|
if (err) {
|
|
index = null;
|
|
callback = once(callback);
|
|
arrayEachSync(result, function(array, index) {
|
|
if (array === undefined) {
|
|
result[index] = noop;
|
|
}
|
|
});
|
|
callback(err, makeConcatResult(result));
|
|
return;
|
|
}
|
|
switch (arguments.length) {
|
|
case 0:
|
|
case 1:
|
|
result[index] = noop;
|
|
break;
|
|
case 2:
|
|
result[index] = res;
|
|
break;
|
|
default:
|
|
result[index] = slice(arguments, 1);
|
|
break;
|
|
}
|
|
index = null;
|
|
if (++completed === size) {
|
|
callback(null, makeConcatResult(result));
|
|
}
|
|
};
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace concatSeries
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, [num]);
|
|
* }, num * 10);
|
|
* };
|
|
* async.concatSeries(array, iterator, function(err, res) {
|
|
* console.log(res); // [1, 3, 2];
|
|
* console.log(order); // [1, 3, 2]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 3, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, [num]);
|
|
* }, num * 10);
|
|
* };
|
|
* async.concatSeries(array, iterator, function(err, res) {
|
|
* console.log(res); // [1, 3, 2]
|
|
* console.log(order); // [[1, 0], [3, 1], [2, 2]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, [num]);
|
|
* }, num * 10);
|
|
* };
|
|
* async.concatSeries(object, iterator, function(err, res) {
|
|
* console.log(res); // [1, 3, 2]
|
|
* console.log(order); // [1, 3, 2]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 3, c: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, [num]);
|
|
* }, num * 10);
|
|
* };
|
|
* async.concatSeries(object, iterator, function(err, res) {
|
|
* console.log(res); // [1, 3, 2]
|
|
* console.log(order); // [[1, 'a'], [3, 'b'], [2, 'c']]
|
|
* });
|
|
*
|
|
*/
|
|
function concatSeries(collection, iterator, callback) {
|
|
callback = onlyOnce(callback || noop);
|
|
var size, key, keys, iter, item, iterate;
|
|
var sync = false;
|
|
var result = [];
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
iter = collection[iteratorSymbol]();
|
|
iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!size) {
|
|
return callback(null, result);
|
|
}
|
|
iterate();
|
|
|
|
function arrayIterator() {
|
|
iterator(collection[completed], done);
|
|
}
|
|
|
|
function arrayIteratorWithIndex() {
|
|
iterator(collection[completed], completed, done);
|
|
}
|
|
|
|
function symbolIterator() {
|
|
item = iter.next();
|
|
item.done ? callback(null, result) : iterator(item.value, done);
|
|
}
|
|
|
|
function symbolIteratorWithKey() {
|
|
item = iter.next();
|
|
item.done ? callback(null, result) : iterator(item.value, completed, done);
|
|
}
|
|
|
|
function objectIterator() {
|
|
iterator(collection[keys[completed]], done);
|
|
}
|
|
|
|
function objectIteratorWithKey() {
|
|
key = keys[completed];
|
|
iterator(collection[key], key, done);
|
|
}
|
|
|
|
function done(err, array) {
|
|
if (isArray(array)) {
|
|
nativePush.apply(result, array);
|
|
} else if (arguments.length >= 2) {
|
|
nativePush.apply(result, slice(arguments, 1));
|
|
}
|
|
if (err) {
|
|
callback(err, result);
|
|
} else if (++completed === size) {
|
|
iterate = throwError;
|
|
callback(null, result);
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace concatLimit
|
|
* @param {Array|Object} collection
|
|
* @param {number} limit - limit >= 1
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, [num]);
|
|
* }, num * 10);
|
|
* };
|
|
* async.concatLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // [1, 3, 5, 2, 4]
|
|
* console.log(order); // [1, 3, 5, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1, 5, 3, 4, 2];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, [num]);
|
|
* }, num * 10);
|
|
* };
|
|
* async.cocnatLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // [1, 3, 5, 2, 4]
|
|
* console.log(order); // [[1, 0], [3, 2], [5, 1], [2, 4], [4, 3]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, [num]);
|
|
* }, num * 10);
|
|
* };
|
|
* async.concatLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // [1, 3, 5, 2, 4]
|
|
* console.log(order); // [1, 3, 5, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1, b: 5, c: 3, d: 4, e: 2 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, num);
|
|
* }, num * 10);
|
|
* };
|
|
* async.cocnatLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // [1, 3, 5, 2, 4]
|
|
* console.log(order); // [[1, 'a'], [3, 'c'], [5, 'b'], [2, 'e'], [4, 'd']]
|
|
* });
|
|
*
|
|
*/
|
|
function concatLimit(collection, limit, iterator, callback) {
|
|
callback = callback || noop;
|
|
var size, key, iter, item, iterate, result;
|
|
var sync = false;
|
|
var started = 0;
|
|
var completed = 0;
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
result = [];
|
|
iter = collection[iteratorSymbol]();
|
|
iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
var keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!size || isNaN(limit) || limit < 1) {
|
|
return callback(null, []);
|
|
}
|
|
result = result || Array(size);
|
|
timesSync(limit > size ? size : limit, iterate);
|
|
|
|
function arrayIterator() {
|
|
if (started < size) {
|
|
iterator(collection[started], createCallback(started++));
|
|
}
|
|
}
|
|
|
|
function arrayIteratorWithIndex() {
|
|
if (started < size) {
|
|
iterator(collection[started], started, createCallback(started++));
|
|
}
|
|
}
|
|
|
|
function symbolIterator() {
|
|
item = iter.next();
|
|
if (item.done === false) {
|
|
iterator(item.value, createCallback(started++));
|
|
} else if (completed === started && iterator !== noop) {
|
|
iterator = noop;
|
|
callback(null, makeConcatResult(result));
|
|
}
|
|
}
|
|
|
|
function symbolIteratorWithKey() {
|
|
item = iter.next();
|
|
if (item.done === false) {
|
|
iterator(item.value, started, createCallback(started++));
|
|
} else if (completed === started && iterator !== noop) {
|
|
iterator = noop;
|
|
callback(null, makeConcatResult(result));
|
|
}
|
|
}
|
|
|
|
function objectIterator() {
|
|
if (started < size) {
|
|
iterator(collection[keys[started]], createCallback(started++));
|
|
}
|
|
}
|
|
|
|
function objectIteratorWithKey() {
|
|
if (started < size) {
|
|
key = keys[started];
|
|
iterator(collection[key], key, createCallback(started++));
|
|
}
|
|
}
|
|
|
|
function createCallback(index) {
|
|
return function(err, res) {
|
|
if (index === null) {
|
|
throwError();
|
|
}
|
|
if (err) {
|
|
index = null;
|
|
iterate = noop;
|
|
callback = once(callback);
|
|
arrayEachSync(result, function(array, index) {
|
|
if (array === undefined) {
|
|
result[index] = noop;
|
|
}
|
|
});
|
|
callback(err, makeConcatResult(result));
|
|
return;
|
|
}
|
|
switch (arguments.length) {
|
|
case 0:
|
|
case 1:
|
|
result[index] = noop;
|
|
break;
|
|
case 2:
|
|
result[index] = res;
|
|
break;
|
|
default:
|
|
result[index] = slice(arguments, 1);
|
|
break;
|
|
}
|
|
index = null;
|
|
if (++completed === size) {
|
|
iterate = throwError;
|
|
callback(null, makeConcatResult(result));
|
|
callback = throwError;
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
};
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {Function} arrayEach
|
|
* @param {Function} baseEach
|
|
* @param {Function} symbolEach
|
|
*/
|
|
function createGroupBy(arrayEach, baseEach, symbolEach) {
|
|
return function groupBy(collection, iterator, callback) {
|
|
callback = callback || noop;
|
|
var size;
|
|
var completed = 0;
|
|
var result = {};
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
arrayEach(collection, iterator, createCallback);
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = symbolEach(collection, iterator, createCallback);
|
|
size && size === completed && callback(null, result);
|
|
} else if (typeof collection === obj) {
|
|
var keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
baseEach(collection, iterator, createCallback, keys);
|
|
}
|
|
if (!size) {
|
|
callback(null, {});
|
|
}
|
|
|
|
function createCallback(value) {
|
|
var called = false;
|
|
return function done(err, key) {
|
|
if (called) {
|
|
throwError();
|
|
}
|
|
called = true;
|
|
if (err) {
|
|
callback = once(callback);
|
|
callback(err, objectClone(result));
|
|
return;
|
|
}
|
|
var array = result[key];
|
|
if (!array) {
|
|
result[key] = [value];
|
|
} else {
|
|
array.push(value);
|
|
}
|
|
if (++completed === size) {
|
|
callback(null, result);
|
|
}
|
|
};
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace groupBySeries
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [4.2, 6.4, 6.1];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, Math.floor(num));
|
|
* }, num * 10);
|
|
* };
|
|
* async.groupBySeries(array, iterator, function(err, res) {
|
|
* console.log(res); // { '4': [4.2], '6': [6.4, 6.1] }
|
|
* console.log(order); // [4.2, 6.4, 6.1]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [4.2, 6.4, 6.1];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, Math.floor(num));
|
|
* }, num * 10);
|
|
* };
|
|
* async.groupBySeries(array, iterator, function(err, res) {
|
|
* console.log(res); // { '4': [4.2], '6': [6.4, 6.1] }
|
|
* console.log(order); // [[4.2, 0], [6.4, 1], [6.1, 2]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 4.2, b: 6.4, c: 6.1 };
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, Math.floor(num));
|
|
* }, num * 10);
|
|
* };
|
|
* async.groupBySeries(object, iterator, function(err, res) {
|
|
* console.log(res); // { '4': [4.2], '6': [6.4, 6.1] }
|
|
* console.log(order); // [4.2, 6.4, 6.1]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 4.2, b: 6.4, c: 6.1 };
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, Math.floor(num));
|
|
* }, num * 10);
|
|
* };
|
|
* async.groupBySeries(object, iterator, function(err, res) {
|
|
* console.log(res); // { '4': [4.2], '6': [6.4, 6.1] }
|
|
* console.log(order); // [[4.2, 'a'], [6.4, 'b'], [6.1, 'c']]
|
|
* });
|
|
*
|
|
*/
|
|
function groupBySeries(collection, iterator, callback) {
|
|
callback = onlyOnce(callback || noop);
|
|
var size, key, value, keys, iter, item, iterate;
|
|
var sync = false;
|
|
var completed = 0;
|
|
var result = {};
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
iter = collection[iteratorSymbol]();
|
|
iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!size) {
|
|
return callback(null, result);
|
|
}
|
|
iterate();
|
|
|
|
function arrayIterator() {
|
|
value = collection[completed];
|
|
iterator(value, done);
|
|
}
|
|
|
|
function arrayIteratorWithIndex() {
|
|
value = collection[completed];
|
|
iterator(value, completed, done);
|
|
}
|
|
|
|
function symbolIterator() {
|
|
item = iter.next();
|
|
value = item.value;
|
|
item.done ? callback(null, result) : iterator(value, done);
|
|
}
|
|
|
|
function symbolIteratorWithKey() {
|
|
item = iter.next();
|
|
value = item.value;
|
|
item.done ? callback(null, result) : iterator(value, completed, done);
|
|
}
|
|
|
|
function objectIterator() {
|
|
value = collection[keys[completed]];
|
|
iterator(value, done);
|
|
}
|
|
|
|
function objectIteratorWithKey() {
|
|
key = keys[completed];
|
|
value = collection[key];
|
|
iterator(value, key, done);
|
|
}
|
|
|
|
function done(err, key) {
|
|
if (err) {
|
|
iterate = throwError;
|
|
callback = onlyOnce(callback);
|
|
callback(err, objectClone(result));
|
|
return;
|
|
}
|
|
var array = result[key];
|
|
if (!array) {
|
|
result[key] = [value];
|
|
} else {
|
|
array.push(value);
|
|
}
|
|
if (++completed === size) {
|
|
iterate = throwError;
|
|
callback(null, result);
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace groupByLimit
|
|
* @param {Array|Object} collection
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var order = [];
|
|
* var array = [1.1, 5.9, 3.2, 3.9, 2.1];
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, Math.floor(num));
|
|
* }, num * 10);
|
|
* };
|
|
* async.groupByLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // { '1': [1.1], '3': [3.2, 3.9], '5': [5.9], '2': [2.1] }
|
|
* console.log(order); // [1.1, 3.2, 5.9, 2.1, 3.9]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // array with index
|
|
* var order = [];
|
|
* var array = [1.1, 5.9, 3.2, 3.9, 2.1];
|
|
* var iterator = function(num, index, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, index]);
|
|
* done(null, Math.floor(num));
|
|
* }, num * 10);
|
|
* };
|
|
* async.groupByLimit(array, 2, iterator, function(err, res) {
|
|
* console.log(res); // { '1': [1.1], '3': [3.2, 3.9], '5': [5.9], '2': [2.1] }
|
|
* console.log(order); // [[1.1, 0], [3.2, 2], [5.9, 1], [2.1, 4], [3.9, 3]]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var order = [];
|
|
* var object = { a: 1.1, b: 5.9, c: 3.2, d: 3.9, e: 2.1 }
|
|
* var iterator = function(num, done) {
|
|
* setTimeout(function() {
|
|
* order.push(num);
|
|
* done(null, Math.floor(num));
|
|
* }, num * 10);
|
|
* };
|
|
* async.groupByLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // { '1': [1.1], '3': [3.2, 3.9], '5': [5.9], '2': [2.1] }
|
|
* console.log(order); // [1.1, 3.2, 5.9, 2.1, 3.9]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object with key
|
|
* var order = [];
|
|
* var object = { a: 1.1, b: 5.9, c: 3.2, d: 3.9, e: 2.1 }
|
|
* var iterator = function(num, key, done) {
|
|
* setTimeout(function() {
|
|
* order.push([num, key]);
|
|
* done(null, Math.floor(num));
|
|
* }, num * 10);
|
|
* };
|
|
* async.groupByLimit(object, 2, iterator, function(err, res) {
|
|
* console.log(res); // { '1': [1.1], '3': [3.2, 3.9], '5': [5.9], '2': [2.1] }
|
|
* console.log(order); // [[1.1, 'a'], [3.2, 'c'], [5.9, 'b'], [2.1, 'e'], [3.9, 'd']]
|
|
* });
|
|
*
|
|
*/
|
|
function groupByLimit(collection, limit, iterator, callback) {
|
|
callback = callback || noop;
|
|
var size, index, key, value, keys, iter, item, iterate;
|
|
var sync = false;
|
|
var started = 0;
|
|
var completed = 0;
|
|
var result = {};
|
|
|
|
if (isArray(collection)) {
|
|
size = collection.length;
|
|
iterate = iterator.length === 3 ? arrayIteratorWithIndex : arrayIterator;
|
|
} else if (!collection) {
|
|
} else if (iteratorSymbol && collection[iteratorSymbol]) {
|
|
size = Infinity;
|
|
iter = collection[iteratorSymbol]();
|
|
iterate = iterator.length === 3 ? symbolIteratorWithKey : symbolIterator;
|
|
} else if (typeof collection === obj) {
|
|
keys = nativeKeys(collection);
|
|
size = keys.length;
|
|
iterate = iterator.length === 3 ? objectIteratorWithKey : objectIterator;
|
|
}
|
|
if (!size || isNaN(limit) || limit < 1) {
|
|
return callback(null, result);
|
|
}
|
|
timesSync(limit > size ? size : limit, iterate);
|
|
|
|
function arrayIterator() {
|
|
if (started < size) {
|
|
value = collection[started++];
|
|
iterator(value, createCallback(value));
|
|
}
|
|
}
|
|
|
|
function arrayIteratorWithIndex() {
|
|
index = started++;
|
|
if (index < size) {
|
|
value = collection[index];
|
|
iterator(value, index, createCallback(value));
|
|
}
|
|
}
|
|
|
|
function symbolIterator() {
|
|
item = iter.next();
|
|
if (item.done === false) {
|
|
started++;
|
|
value = item.value;
|
|
iterator(value, createCallback(value));
|
|
} else if (completed === started && iterator !== noop) {
|
|
iterator = noop;
|
|
callback(null, result);
|
|
}
|
|
}
|
|
|
|
function symbolIteratorWithKey() {
|
|
item = iter.next();
|
|
if (item.done === false) {
|
|
value = item.value;
|
|
iterator(value, started++, createCallback(value));
|
|
} else if (completed === started && iterator !== noop) {
|
|
iterator = noop;
|
|
callback(null, result);
|
|
}
|
|
}
|
|
|
|
function objectIterator() {
|
|
if (started < size) {
|
|
value = collection[keys[started++]];
|
|
iterator(value, createCallback(value));
|
|
}
|
|
}
|
|
|
|
function objectIteratorWithKey() {
|
|
if (started < size) {
|
|
key = keys[started++];
|
|
value = collection[key];
|
|
iterator(value, key, createCallback(value));
|
|
}
|
|
}
|
|
|
|
function createCallback(value) {
|
|
var called = false;
|
|
return function(err, key) {
|
|
if (called) {
|
|
throwError();
|
|
}
|
|
called = true;
|
|
if (err) {
|
|
iterate = noop;
|
|
callback = once(callback);
|
|
callback(err, objectClone(result));
|
|
return;
|
|
}
|
|
var array = result[key];
|
|
if (!array) {
|
|
result[key] = [value];
|
|
} else {
|
|
array.push(value);
|
|
}
|
|
if (++completed === size) {
|
|
callback(null, result);
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
};
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
* @param {Function} arrayEach
|
|
* @param {Function} baseEach
|
|
*/
|
|
function createParallel(arrayEach, baseEach) {
|
|
return function parallel(tasks, callback) {
|
|
callback = callback || noop;
|
|
var size, keys, result;
|
|
var completed = 0;
|
|
|
|
if (isArray(tasks)) {
|
|
size = tasks.length;
|
|
result = Array(size);
|
|
arrayEach(tasks, createCallback);
|
|
} else if (tasks && typeof tasks === obj) {
|
|
keys = nativeKeys(tasks);
|
|
size = keys.length;
|
|
result = {};
|
|
baseEach(tasks, createCallback, keys);
|
|
}
|
|
if (!size) {
|
|
callback(null, result);
|
|
}
|
|
|
|
function createCallback(key) {
|
|
return function(err, res) {
|
|
if (key === null) {
|
|
throwError();
|
|
}
|
|
if (err) {
|
|
key = null;
|
|
callback = once(callback);
|
|
callback(err, result);
|
|
return;
|
|
}
|
|
result[key] = arguments.length <= 2 ? res : slice(arguments, 1);
|
|
key = null;
|
|
if (++completed === size) {
|
|
callback(null, result);
|
|
}
|
|
};
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace series
|
|
* @param {Array|Object} tasks - functions
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* var order = [];
|
|
* var tasks = [
|
|
* function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(1);
|
|
* done(null, 1);
|
|
* }, 10);
|
|
* },
|
|
* function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(2);
|
|
* done(null, 2);
|
|
* }, 30);
|
|
* },
|
|
* function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(3);
|
|
* done(null, 3);
|
|
* }, 40);
|
|
* },
|
|
* function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(4);
|
|
* done(null, 4);
|
|
* }, 20);
|
|
* }
|
|
* ];
|
|
* async.series(tasks, function(err, res) {
|
|
* console.log(res); // [1, 2, 3, 4];
|
|
* console.log(order); // [1, 2, 3, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* var order = [];
|
|
* var tasks = {
|
|
* 'a': function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(1);
|
|
* done(null, 1);
|
|
* }, 10);
|
|
* },
|
|
* 'b': function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(2);
|
|
* done(null, 2);
|
|
* }, 30);
|
|
* },
|
|
* 'c': function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(3);
|
|
* done(null, 3);
|
|
* }, 40);
|
|
* },
|
|
* 'd': function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(4);
|
|
* done(null, 4);
|
|
* }, 20);
|
|
* }
|
|
* };
|
|
* async.series(tasks, function(err, res) {
|
|
* console.log(res); // { a: 1, b: 2, c: 3, d:4 }
|
|
* console.log(order); // [1, 4, 2, 3]
|
|
* });
|
|
*
|
|
*/
|
|
function series(tasks, callback) {
|
|
callback = callback || noop;
|
|
var size, key, keys, result, iterate;
|
|
var sync = false;
|
|
var completed = 0;
|
|
|
|
if (isArray(tasks)) {
|
|
size = tasks.length;
|
|
result = Array(size);
|
|
iterate = arrayIterator;
|
|
} else if (tasks && typeof tasks === obj) {
|
|
keys = nativeKeys(tasks);
|
|
size = keys.length;
|
|
result = {};
|
|
iterate = objectIterator;
|
|
} else {
|
|
return callback(null);
|
|
}
|
|
if (!size) {
|
|
return callback(null, result);
|
|
}
|
|
iterate();
|
|
|
|
function arrayIterator() {
|
|
key = completed;
|
|
tasks[completed](done);
|
|
}
|
|
|
|
function objectIterator() {
|
|
key = keys[completed];
|
|
tasks[key](done);
|
|
}
|
|
|
|
function done(err, res) {
|
|
if (err) {
|
|
iterate = throwError;
|
|
callback = onlyOnce(callback);
|
|
callback(err, result);
|
|
return;
|
|
}
|
|
result[key] = arguments.length <= 2 ? res : slice(arguments, 1);
|
|
if (++completed === size) {
|
|
iterate = throwError;
|
|
callback(null, result);
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace parallelLimit
|
|
* @param {Array|Object} tasks - functions
|
|
* @param {number} limit - limit >= 1
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* var order = [];
|
|
* var tasks = [
|
|
* function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(1);
|
|
* done(null, 1);
|
|
* }, 10);
|
|
* },
|
|
* function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(2);
|
|
* done(null, 2);
|
|
* }, 50);
|
|
* },
|
|
* function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(3);
|
|
* done(null, 3);
|
|
* }, 30);
|
|
* },
|
|
* function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(4);
|
|
* done(null, 4);
|
|
* }, 40);
|
|
* }
|
|
* ];
|
|
* async.parallelLimit(tasks, 2, function(err, res) {
|
|
* console.log(res); // [1, 2, 3, 4];
|
|
* console.log(order); // [1, 3, 2, 4]
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* var order = [];
|
|
* var tasks = {
|
|
* 'a': function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(1);
|
|
* done(null, 1);
|
|
* }, 10);
|
|
* },
|
|
* 'b': function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(2);
|
|
* done(null, 2);
|
|
* }, 50);
|
|
* },
|
|
* 'c': function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(3);
|
|
* done(null, 3);
|
|
* }, 20);
|
|
* },
|
|
* 'd': function(done) {
|
|
* setTimeout(function() {
|
|
* order.push(4);
|
|
* done(null, 4);
|
|
* }, 40);
|
|
* }
|
|
* };
|
|
* async.parallelLimit(tasks, 2, function(err, res) {
|
|
* console.log(res); // { a: 1, b: 2, c: 3, d:4 }
|
|
* console.log(order); // [1, 3, 2, 4]
|
|
* });
|
|
*
|
|
*/
|
|
function parallelLimit(tasks, limit, callback) {
|
|
callback = callback || noop;
|
|
var size, index, key, keys, result, iterate;
|
|
var sync = false;
|
|
var started = 0;
|
|
var completed = 0;
|
|
|
|
if (isArray(tasks)) {
|
|
size = tasks.length;
|
|
result = Array(size);
|
|
iterate = arrayIterator;
|
|
} else if (tasks && typeof tasks === obj) {
|
|
keys = nativeKeys(tasks);
|
|
size = keys.length;
|
|
result = {};
|
|
iterate = objectIterator;
|
|
}
|
|
if (!size || isNaN(limit) || limit < 1) {
|
|
return callback(null, result);
|
|
}
|
|
timesSync(limit > size ? size : limit, iterate);
|
|
|
|
function arrayIterator() {
|
|
index = started++;
|
|
if (index < size) {
|
|
tasks[index](createCallback(index));
|
|
}
|
|
}
|
|
|
|
function objectIterator() {
|
|
if (started < size) {
|
|
key = keys[started++];
|
|
tasks[key](createCallback(key));
|
|
}
|
|
}
|
|
|
|
function createCallback(key) {
|
|
return function(err, res) {
|
|
if (key === null) {
|
|
throwError();
|
|
}
|
|
if (err) {
|
|
key = null;
|
|
iterate = noop;
|
|
callback = once(callback);
|
|
callback(err, result);
|
|
return;
|
|
}
|
|
result[key] = arguments.length <= 2 ? res : slice(arguments, 1);
|
|
key = null;
|
|
if (++completed === size) {
|
|
callback(null, result);
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
};
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace tryEach
|
|
* @param {Array|Object} tasks - functions
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* var tasks = [
|
|
* function(done) {
|
|
* setTimeout(function() {
|
|
* done(new Error('error'));
|
|
* }, 10);
|
|
* },
|
|
* function(done) {
|
|
* setTimeout(function() {
|
|
* done(null, 2);
|
|
* }, 10);
|
|
* }
|
|
* ];
|
|
* async.tryEach(tasks, function(err, res) {
|
|
* console.log(res); // 2
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* var tasks = [
|
|
* function(done) {
|
|
* setTimeout(function() {
|
|
* done(new Error('error1'));
|
|
* }, 10);
|
|
* },
|
|
* function(done) {
|
|
* setTimeout(function() {
|
|
* done(new Error('error2');
|
|
* }, 10);
|
|
* }
|
|
* ];
|
|
* async.tryEach(tasks, function(err, res) {
|
|
* console.log(err); // error2
|
|
* console.log(res); // undefined
|
|
* });
|
|
*
|
|
*/
|
|
function tryEach(tasks, callback) {
|
|
callback = callback || noop;
|
|
var size, keys, iterate;
|
|
var sync = false;
|
|
var completed = 0;
|
|
|
|
if (isArray(tasks)) {
|
|
size = tasks.length;
|
|
iterate = arrayIterator;
|
|
} else if (tasks && typeof tasks === obj) {
|
|
keys = nativeKeys(tasks);
|
|
size = keys.length;
|
|
iterate = objectIterator;
|
|
}
|
|
if (!size) {
|
|
return callback(null);
|
|
}
|
|
iterate();
|
|
|
|
function arrayIterator() {
|
|
tasks[completed](done);
|
|
}
|
|
|
|
function objectIterator() {
|
|
tasks[keys[completed]](done);
|
|
}
|
|
|
|
function done(err, res) {
|
|
if (!err) {
|
|
if (arguments.length <= 2) {
|
|
callback(null, res);
|
|
} else {
|
|
callback(null, slice(arguments, 1));
|
|
}
|
|
} else if (++completed === size) {
|
|
callback(err);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* check for waterfall tasks
|
|
* @private
|
|
* @param {Array} tasks
|
|
* @param {Function} callback
|
|
* @return {boolean}
|
|
*/
|
|
function checkWaterfallTasks(tasks, callback) {
|
|
if (!isArray(tasks)) {
|
|
callback(new Error('First argument to waterfall must be an array of functions'));
|
|
return false;
|
|
}
|
|
if (tasks.length === 0) {
|
|
callback(null);
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* check for waterfall tasks
|
|
* @private
|
|
* @param {function} func
|
|
* @param {Array|Object} args - arguments
|
|
* @return {function} next
|
|
*/
|
|
function waterfallIterator(func, args, next) {
|
|
switch (args.length) {
|
|
case 0:
|
|
case 1:
|
|
return func(next);
|
|
case 2:
|
|
return func(args[1], next);
|
|
case 3:
|
|
return func(args[1], args[2], next);
|
|
case 4:
|
|
return func(args[1], args[2], args[3], next);
|
|
case 5:
|
|
return func(args[1], args[2], args[3], args[4], next);
|
|
case 6:
|
|
return func(args[1], args[2], args[3], args[4], args[5], next);
|
|
default:
|
|
args = slice(args, 1);
|
|
args.push(next);
|
|
return func.apply(null, args);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace waterfall
|
|
* @param {Array} tasks - functions
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* var order = [];
|
|
* var tasks = [
|
|
* function(next) {
|
|
* setTimeout(function() {
|
|
* order.push(1);
|
|
* next(null, 1);
|
|
* }, 10);
|
|
* },
|
|
* function(arg1, next) {
|
|
* setTimeout(function() {
|
|
* order.push(2);
|
|
* next(null, 1, 2);
|
|
* }, 30);
|
|
* },
|
|
* function(arg1, arg2, next) {
|
|
* setTimeout(function() {
|
|
* order.push(3);
|
|
* next(null, 3);
|
|
* }, 20);
|
|
* },
|
|
* function(arg1, next) {
|
|
* setTimeout(function() {
|
|
* order.push(4);
|
|
* next(null, 1, 2, 3, 4);
|
|
* }, 40);
|
|
* }
|
|
* ];
|
|
* async.waterfall(tasks, function(err, arg1, arg2, arg3, arg4) {
|
|
* console.log(arg1, arg2, arg3, arg4); // 1 2 3 4
|
|
* });
|
|
*
|
|
*/
|
|
function waterfall(tasks, callback) {
|
|
callback = callback || noop;
|
|
if (!checkWaterfallTasks(tasks, callback)) {
|
|
return;
|
|
}
|
|
var func, args, done, sync;
|
|
var completed = 0;
|
|
var size = tasks.length;
|
|
waterfallIterator(tasks[0], [], createCallback(0));
|
|
|
|
function iterate() {
|
|
waterfallIterator(func, args, createCallback(func));
|
|
}
|
|
|
|
function createCallback(index) {
|
|
return function next(err, res) {
|
|
if (index === undefined) {
|
|
callback = noop;
|
|
throwError();
|
|
}
|
|
index = undefined;
|
|
if (err) {
|
|
done = callback;
|
|
callback = throwError;
|
|
done(err);
|
|
return;
|
|
}
|
|
if (++completed === size) {
|
|
done = callback;
|
|
callback = throwError;
|
|
if (arguments.length <= 2) {
|
|
done(err, res);
|
|
} else {
|
|
done.apply(null, createArray(arguments));
|
|
}
|
|
return;
|
|
}
|
|
if (sync) {
|
|
args = arguments;
|
|
func = tasks[completed] || throwError;
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
waterfallIterator(tasks[completed] || throwError, arguments, createCallback(completed));
|
|
}
|
|
sync = false;
|
|
};
|
|
}
|
|
}
|
|
|
|
/**
|
|
* `angelFall` is like `waterfall` and inject callback to last argument of next task.
|
|
*
|
|
* @memberof async
|
|
* @namespace angelFall
|
|
* @param {Array} tasks - functions
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* var order = [];
|
|
* var tasks = [
|
|
* function(next) {
|
|
* setTimeout(function() {
|
|
* order.push(1);
|
|
* next(null, 1);
|
|
* }, 10);
|
|
* },
|
|
* function(arg1, empty, next) {
|
|
* setTimeout(function() {
|
|
* order.push(2);
|
|
* next(null, 1, 2);
|
|
* }, 30);
|
|
* },
|
|
* function(next) {
|
|
* setTimeout(function() {
|
|
* order.push(3);
|
|
* next(null, 3);
|
|
* }, 20);
|
|
* },
|
|
* function(arg1, empty1, empty2, empty3, next) {
|
|
* setTimeout(function() {
|
|
* order.push(4);
|
|
* next(null, 1, 2, 3, 4);
|
|
* }, 40);
|
|
* }
|
|
* ];
|
|
* async.angelFall(tasks, function(err, arg1, arg2, arg3, arg4) {
|
|
* console.log(arg1, arg2, arg3, arg4); // 1 2 3 4
|
|
* });
|
|
*
|
|
*/
|
|
function angelFall(tasks, callback) {
|
|
callback = callback || noop;
|
|
if (!checkWaterfallTasks(tasks, callback)) {
|
|
return;
|
|
}
|
|
var completed = 0;
|
|
var sync = false;
|
|
var size = tasks.length;
|
|
var func = tasks[completed];
|
|
var args = [];
|
|
var iterate = function() {
|
|
switch (func.length) {
|
|
case 0:
|
|
try {
|
|
next(null, func());
|
|
} catch (e) {
|
|
next(e);
|
|
}
|
|
return;
|
|
case 1:
|
|
return func(next);
|
|
case 2:
|
|
return func(args[1], next);
|
|
case 3:
|
|
return func(args[1], args[2], next);
|
|
case 4:
|
|
return func(args[1], args[2], args[3], next);
|
|
case 5:
|
|
return func(args[1], args[2], args[3], args[4], next);
|
|
default:
|
|
args = slice(args, 1);
|
|
args[func.length - 1] = next;
|
|
return func.apply(null, args);
|
|
}
|
|
};
|
|
iterate();
|
|
|
|
function next(err, res) {
|
|
if (err) {
|
|
iterate = throwError;
|
|
callback = onlyOnce(callback);
|
|
callback(err);
|
|
return;
|
|
}
|
|
if (++completed === size) {
|
|
iterate = throwError;
|
|
var done = callback;
|
|
callback = throwError;
|
|
if (arguments.length === 2) {
|
|
done(err, res);
|
|
} else {
|
|
done.apply(null, createArray(arguments));
|
|
}
|
|
return;
|
|
}
|
|
func = tasks[completed];
|
|
args = arguments;
|
|
if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace whilst
|
|
* @param {Function} test
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
*/
|
|
function whilst(test, iterator, callback) {
|
|
callback = callback || noop;
|
|
var sync = false;
|
|
if (test()) {
|
|
iterate();
|
|
} else {
|
|
callback(null);
|
|
}
|
|
|
|
function iterate() {
|
|
if (sync) {
|
|
nextTick(next);
|
|
} else {
|
|
sync = true;
|
|
iterator(done);
|
|
}
|
|
sync = false;
|
|
}
|
|
|
|
function next() {
|
|
iterator(done);
|
|
}
|
|
|
|
function done(err, arg) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
if (arguments.length <= 2) {
|
|
if (test(arg)) {
|
|
iterate();
|
|
} else {
|
|
callback(null, arg);
|
|
}
|
|
return;
|
|
}
|
|
arg = slice(arguments, 1);
|
|
if (test.apply(null, arg)) {
|
|
iterate();
|
|
} else {
|
|
callback.apply(null, [null].concat(arg));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace doWhilst
|
|
* @param {Function} iterator
|
|
* @param {Function} test
|
|
* @param {Function} callback
|
|
*/
|
|
function doWhilst(iterator, test, callback) {
|
|
callback = callback || noop;
|
|
var sync = false;
|
|
next();
|
|
|
|
function iterate() {
|
|
if (sync) {
|
|
nextTick(next);
|
|
} else {
|
|
sync = true;
|
|
iterator(done);
|
|
}
|
|
sync = false;
|
|
}
|
|
|
|
function next() {
|
|
iterator(done);
|
|
}
|
|
|
|
function done(err, arg) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
if (arguments.length <= 2) {
|
|
if (test(arg)) {
|
|
iterate();
|
|
} else {
|
|
callback(null, arg);
|
|
}
|
|
return;
|
|
}
|
|
arg = slice(arguments, 1);
|
|
if (test.apply(null, arg)) {
|
|
iterate();
|
|
} else {
|
|
callback.apply(null, [null].concat(arg));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace until
|
|
* @param {Function} test
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
*/
|
|
function until(test, iterator, callback) {
|
|
callback = callback || noop;
|
|
var sync = false;
|
|
if (!test()) {
|
|
iterate();
|
|
} else {
|
|
callback(null);
|
|
}
|
|
|
|
function iterate() {
|
|
if (sync) {
|
|
nextTick(next);
|
|
} else {
|
|
sync = true;
|
|
iterator(done);
|
|
}
|
|
sync = false;
|
|
}
|
|
|
|
function next() {
|
|
iterator(done);
|
|
}
|
|
|
|
function done(err, arg) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
if (arguments.length <= 2) {
|
|
if (!test(arg)) {
|
|
iterate();
|
|
} else {
|
|
callback(null, arg);
|
|
}
|
|
return;
|
|
}
|
|
arg = slice(arguments, 1);
|
|
if (!test.apply(null, arg)) {
|
|
iterate();
|
|
} else {
|
|
callback.apply(null, [null].concat(arg));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace doUntil
|
|
* @param {Function} iterator
|
|
* @param {Function} test
|
|
* @param {Function} callback
|
|
*/
|
|
function doUntil(iterator, test, callback) {
|
|
callback = callback || noop;
|
|
var sync = false;
|
|
next();
|
|
|
|
function iterate() {
|
|
if (sync) {
|
|
nextTick(next);
|
|
} else {
|
|
sync = true;
|
|
iterator(done);
|
|
}
|
|
sync = false;
|
|
}
|
|
|
|
function next() {
|
|
iterator(done);
|
|
}
|
|
|
|
function done(err, arg) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
if (arguments.length <= 2) {
|
|
if (!test(arg)) {
|
|
iterate();
|
|
} else {
|
|
callback(null, arg);
|
|
}
|
|
return;
|
|
}
|
|
arg = slice(arguments, 1);
|
|
if (!test.apply(null, arg)) {
|
|
iterate();
|
|
} else {
|
|
callback.apply(null, [null].concat(arg));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace during
|
|
* @param {Function} test
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
*/
|
|
function during(test, iterator, callback) {
|
|
callback = callback || noop;
|
|
_test();
|
|
|
|
function _test() {
|
|
test(iterate);
|
|
}
|
|
|
|
function iterate(err, truth) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
if (truth) {
|
|
iterator(done);
|
|
} else {
|
|
callback(null);
|
|
}
|
|
}
|
|
|
|
function done(err) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
_test();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace doDuring
|
|
* @param {Function} test
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
*/
|
|
function doDuring(iterator, test, callback) {
|
|
callback = callback || noop;
|
|
iterate(null, true);
|
|
|
|
function iterate(err, truth) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
if (truth) {
|
|
iterator(done);
|
|
} else {
|
|
callback(null);
|
|
}
|
|
}
|
|
|
|
function done(err, res) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
switch (arguments.length) {
|
|
case 0:
|
|
case 1:
|
|
test(iterate);
|
|
break;
|
|
case 2:
|
|
test(res, iterate);
|
|
break;
|
|
default:
|
|
var args = slice(arguments, 1);
|
|
args.push(iterate);
|
|
test.apply(null, args);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace forever
|
|
*/
|
|
function forever(iterator, callback) {
|
|
var sync = false;
|
|
iterate();
|
|
|
|
function iterate() {
|
|
iterator(next);
|
|
}
|
|
|
|
function next(err) {
|
|
if (err) {
|
|
if (callback) {
|
|
return callback(err);
|
|
}
|
|
throw err;
|
|
}
|
|
if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace compose
|
|
*/
|
|
function compose() {
|
|
return seq.apply(null, reverse(arguments));
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace seq
|
|
*/
|
|
function seq(/* functions... */) {
|
|
var fns = createArray(arguments);
|
|
|
|
return function() {
|
|
var self = this;
|
|
var args = createArray(arguments);
|
|
var callback = args[args.length - 1];
|
|
if (typeof callback === func) {
|
|
args.pop();
|
|
} else {
|
|
callback = noop;
|
|
}
|
|
reduce(fns, args, iterator, done);
|
|
|
|
function iterator(newargs, fn, callback) {
|
|
var func = function(err) {
|
|
var nextargs = slice(arguments, 1);
|
|
callback(err, nextargs);
|
|
};
|
|
newargs.push(func);
|
|
fn.apply(self, newargs);
|
|
}
|
|
|
|
function done(err, res) {
|
|
res = isArray(res) ? res : [res];
|
|
res.unshift(err);
|
|
callback.apply(self, res);
|
|
}
|
|
};
|
|
}
|
|
|
|
function createApplyEach(func) {
|
|
return function applyEach(fns /* arguments */) {
|
|
var go = function() {
|
|
var self = this;
|
|
var args = createArray(arguments);
|
|
var callback = args.pop() || noop;
|
|
return func(fns, iterator, callback);
|
|
|
|
function iterator(fn, done) {
|
|
fn.apply(self, args.concat([done]));
|
|
}
|
|
};
|
|
if (arguments.length > 1) {
|
|
var args = slice(arguments, 1);
|
|
return go.apply(this, args);
|
|
} else {
|
|
return go;
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @see https://github.com/caolan/async/blob/master/lib/internal/DoublyLinkedList.js
|
|
*/
|
|
function DLL() {
|
|
this.head = null;
|
|
this.tail = null;
|
|
this.length = 0;
|
|
}
|
|
|
|
DLL.prototype._removeLink = function(node) {
|
|
var prev = node.prev;
|
|
var next = node.next;
|
|
if (prev) {
|
|
prev.next = next;
|
|
} else {
|
|
this.head = next;
|
|
}
|
|
if (next) {
|
|
next.prev = prev;
|
|
} else {
|
|
this.tail = prev;
|
|
}
|
|
node.prev = null;
|
|
node.next = null;
|
|
this.length--;
|
|
return node;
|
|
};
|
|
|
|
DLL.prototype.empty = DLL;
|
|
|
|
DLL.prototype._setInitial = function(node) {
|
|
this.length = 1;
|
|
this.head = this.tail = node;
|
|
};
|
|
|
|
DLL.prototype.insertBefore = function(node, newNode) {
|
|
newNode.prev = node.prev;
|
|
newNode.next = node;
|
|
if (node.prev) {
|
|
node.prev.next = newNode;
|
|
} else {
|
|
this.head = newNode;
|
|
}
|
|
node.prev = newNode;
|
|
this.length++;
|
|
};
|
|
|
|
DLL.prototype.unshift = function(node) {
|
|
if (this.head) {
|
|
this.insertBefore(this.head, node);
|
|
} else {
|
|
this._setInitial(node);
|
|
}
|
|
};
|
|
|
|
DLL.prototype.push = function(node) {
|
|
var tail = this.tail;
|
|
if (tail) {
|
|
node.prev = tail;
|
|
node.next = tail.next;
|
|
this.tail = node;
|
|
tail.next = node;
|
|
this.length++;
|
|
} else {
|
|
this._setInitial(node);
|
|
}
|
|
};
|
|
|
|
DLL.prototype.shift = function() {
|
|
return this.head && this._removeLink(this.head);
|
|
};
|
|
|
|
DLL.prototype.splice = function(end) {
|
|
var task;
|
|
var tasks = [];
|
|
while (end-- && (task = this.shift())) {
|
|
tasks.push(task);
|
|
}
|
|
return tasks;
|
|
};
|
|
|
|
DLL.prototype.remove = function(test) {
|
|
var node = this.head;
|
|
while (node) {
|
|
if (test(node)) {
|
|
this._removeLink(node);
|
|
}
|
|
node = node.next;
|
|
}
|
|
return this;
|
|
};
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
function baseQueue(isQueue, worker, concurrency, payload) {
|
|
if (concurrency === undefined) {
|
|
concurrency = 1;
|
|
} else if (isNaN(concurrency) || concurrency < 1) {
|
|
throw new Error('Concurrency must not be zero');
|
|
}
|
|
|
|
var workers = 0;
|
|
var workersList = [];
|
|
var _callback, _unshift;
|
|
|
|
var q = {
|
|
_tasks: new DLL(),
|
|
concurrency: concurrency,
|
|
payload: payload,
|
|
saturated: noop,
|
|
unsaturated: noop,
|
|
buffer: concurrency / 4,
|
|
empty: noop,
|
|
drain: noop,
|
|
error: noop,
|
|
started: false,
|
|
paused: false,
|
|
push: push,
|
|
kill: kill,
|
|
unshift: unshift,
|
|
remove: remove,
|
|
process: isQueue ? runQueue : runCargo,
|
|
length: getLength,
|
|
running: running,
|
|
workersList: getWorkersList,
|
|
idle: idle,
|
|
pause: pause,
|
|
resume: resume,
|
|
_worker: worker
|
|
};
|
|
return q;
|
|
|
|
function push(tasks, callback) {
|
|
_insert(tasks, callback);
|
|
}
|
|
|
|
function unshift(tasks, callback) {
|
|
_insert(tasks, callback, true);
|
|
}
|
|
|
|
function _exec(task) {
|
|
var item = {
|
|
data: task,
|
|
callback: _callback
|
|
};
|
|
if (_unshift) {
|
|
q._tasks.unshift(item);
|
|
} else {
|
|
q._tasks.push(item);
|
|
}
|
|
nextTick(q.process);
|
|
}
|
|
|
|
function _insert(tasks, callback, unshift) {
|
|
if (callback == null) {
|
|
callback = noop;
|
|
} else if (typeof callback !== 'function') {
|
|
throw new Error('task callback must be a function');
|
|
}
|
|
q.started = true;
|
|
var _tasks = isArray(tasks) ? tasks : [tasks];
|
|
|
|
if (tasks === undefined || !_tasks.length) {
|
|
if (q.idle()) {
|
|
nextTick(q.drain);
|
|
}
|
|
return;
|
|
}
|
|
|
|
_unshift = unshift;
|
|
_callback = callback;
|
|
arrayEachSync(_tasks, _exec);
|
|
// Avoid leaking the callback
|
|
_callback = undefined;
|
|
}
|
|
|
|
function kill() {
|
|
q.drain = noop;
|
|
q._tasks.empty();
|
|
}
|
|
|
|
function _next(q, tasks) {
|
|
var called = false;
|
|
return function done(err, res) {
|
|
if (called) {
|
|
throwError();
|
|
}
|
|
called = true;
|
|
|
|
workers--;
|
|
var task;
|
|
var index = -1;
|
|
var size = workersList.length;
|
|
var taskIndex = -1;
|
|
var taskSize = tasks.length;
|
|
var useApply = arguments.length > 2;
|
|
var args = useApply && createArray(arguments);
|
|
while (++taskIndex < taskSize) {
|
|
task = tasks[taskIndex];
|
|
while (++index < size) {
|
|
if (workersList[index] === task) {
|
|
if (index === 0) {
|
|
workersList.shift();
|
|
} else {
|
|
workersList.splice(index, 1);
|
|
}
|
|
index = size;
|
|
size--;
|
|
}
|
|
}
|
|
index = -1;
|
|
if (useApply) {
|
|
task.callback.apply(task, args);
|
|
} else {
|
|
task.callback(err, res);
|
|
}
|
|
if (err) {
|
|
q.error(err, task.data);
|
|
}
|
|
}
|
|
|
|
if (workers <= q.concurrency - q.buffer) {
|
|
q.unsaturated();
|
|
}
|
|
|
|
if (q._tasks.length + workers === 0) {
|
|
q.drain();
|
|
}
|
|
q.process();
|
|
};
|
|
}
|
|
|
|
function runQueue() {
|
|
while (!q.paused && workers < q.concurrency && q._tasks.length) {
|
|
var task = q._tasks.shift();
|
|
workers++;
|
|
workersList.push(task);
|
|
if (q._tasks.length === 0) {
|
|
q.empty();
|
|
}
|
|
if (workers === q.concurrency) {
|
|
q.saturated();
|
|
}
|
|
var done = _next(q, [task]);
|
|
worker(task.data, done);
|
|
}
|
|
}
|
|
|
|
function runCargo() {
|
|
while (!q.paused && workers < q.concurrency && q._tasks.length) {
|
|
var tasks = q._tasks.splice(q.payload || q._tasks.length);
|
|
var index = -1;
|
|
var size = tasks.length;
|
|
var data = Array(size);
|
|
while (++index < size) {
|
|
data[index] = tasks[index].data;
|
|
}
|
|
workers++;
|
|
nativePush.apply(workersList, tasks);
|
|
if (q._tasks.length === 0) {
|
|
q.empty();
|
|
}
|
|
if (workers === q.concurrency) {
|
|
q.saturated();
|
|
}
|
|
var done = _next(q, tasks);
|
|
worker(data, done);
|
|
}
|
|
}
|
|
|
|
function getLength() {
|
|
return q._tasks.length;
|
|
}
|
|
|
|
function running() {
|
|
return workers;
|
|
}
|
|
|
|
function getWorkersList() {
|
|
return workersList;
|
|
}
|
|
|
|
function idle() {
|
|
return q.length() + workers === 0;
|
|
}
|
|
|
|
function pause() {
|
|
q.paused = true;
|
|
}
|
|
|
|
function _resume() {
|
|
nextTick(q.process);
|
|
}
|
|
|
|
function resume() {
|
|
if (q.paused === false) {
|
|
return;
|
|
}
|
|
q.paused = false;
|
|
var count = q.concurrency < q._tasks.length ? q.concurrency : q._tasks.length;
|
|
timesSync(count, _resume);
|
|
}
|
|
|
|
/**
|
|
* @param {Function} test
|
|
*/
|
|
function remove(test) {
|
|
q._tasks.remove(test);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace queue
|
|
*/
|
|
function queue(worker, concurrency) {
|
|
return baseQueue(true, worker, concurrency);
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace priorityQueue
|
|
*/
|
|
function priorityQueue(worker, concurrency) {
|
|
var q = baseQueue(true, worker, concurrency);
|
|
q.push = push;
|
|
delete q.unshift;
|
|
return q;
|
|
|
|
function push(tasks, priority, callback) {
|
|
q.started = true;
|
|
priority = priority || 0;
|
|
var _tasks = isArray(tasks) ? tasks : [tasks];
|
|
var taskSize = _tasks.length;
|
|
|
|
if (tasks === undefined || taskSize === 0) {
|
|
if (q.idle()) {
|
|
nextTick(q.drain);
|
|
}
|
|
return;
|
|
}
|
|
|
|
callback = typeof callback === func ? callback : noop;
|
|
var nextNode = q._tasks.head;
|
|
while (nextNode && priority >= nextNode.priority) {
|
|
nextNode = nextNode.next;
|
|
}
|
|
while (taskSize--) {
|
|
var item = {
|
|
data: _tasks[taskSize],
|
|
priority: priority,
|
|
callback: callback
|
|
};
|
|
if (nextNode) {
|
|
q._tasks.insertBefore(nextNode, item);
|
|
} else {
|
|
q._tasks.push(item);
|
|
}
|
|
nextTick(q.process);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace cargo
|
|
*/
|
|
function cargo(worker, payload) {
|
|
return baseQueue(false, worker, 1, payload);
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace auto
|
|
* @param {Object} tasks
|
|
* @param {number} [concurrency]
|
|
* @param {Function} [callback]
|
|
*/
|
|
function auto(tasks, concurrency, callback) {
|
|
if (typeof concurrency === func) {
|
|
callback = concurrency;
|
|
concurrency = null;
|
|
}
|
|
var keys = nativeKeys(tasks);
|
|
var rest = keys.length;
|
|
var results = {};
|
|
if (rest === 0) {
|
|
return callback(null, results);
|
|
}
|
|
var runningTasks = 0;
|
|
var readyTasks = new DLL();
|
|
var listeners = Object.create(null);
|
|
callback = onlyOnce(callback || noop);
|
|
concurrency = concurrency || rest;
|
|
|
|
baseEachSync(tasks, iterator, keys);
|
|
proceedQueue();
|
|
|
|
function iterator(task, key) {
|
|
// no dependencies
|
|
var _task, _taskSize;
|
|
if (!isArray(task)) {
|
|
_task = task;
|
|
_taskSize = 0;
|
|
readyTasks.push([_task, _taskSize, done]);
|
|
return;
|
|
}
|
|
var dependencySize = task.length - 1;
|
|
_task = task[dependencySize];
|
|
_taskSize = dependencySize;
|
|
if (dependencySize === 0) {
|
|
readyTasks.push([_task, _taskSize, done]);
|
|
return;
|
|
}
|
|
// dependencies
|
|
var index = -1;
|
|
while (++index < dependencySize) {
|
|
var dependencyName = task[index];
|
|
if (notInclude(keys, dependencyName)) {
|
|
var msg =
|
|
'async.auto task `' +
|
|
key +
|
|
'` has non-existent dependency `' +
|
|
dependencyName +
|
|
'` in ' +
|
|
task.join(', ');
|
|
throw new Error(msg);
|
|
}
|
|
var taskListeners = listeners[dependencyName];
|
|
if (!taskListeners) {
|
|
taskListeners = listeners[dependencyName] = [];
|
|
}
|
|
taskListeners.push(taskListener);
|
|
}
|
|
|
|
function done(err, arg) {
|
|
if (key === null) {
|
|
throwError();
|
|
}
|
|
arg = arguments.length <= 2 ? arg : slice(arguments, 1);
|
|
if (err) {
|
|
rest = 0;
|
|
runningTasks = 0;
|
|
readyTasks.length = 0;
|
|
var safeResults = objectClone(results);
|
|
safeResults[key] = arg;
|
|
key = null;
|
|
var _callback = callback;
|
|
callback = noop;
|
|
_callback(err, safeResults);
|
|
return;
|
|
}
|
|
runningTasks--;
|
|
rest--;
|
|
results[key] = arg;
|
|
taskComplete(key);
|
|
key = null;
|
|
}
|
|
|
|
function taskListener() {
|
|
if (--dependencySize === 0) {
|
|
readyTasks.push([_task, _taskSize, done]);
|
|
}
|
|
}
|
|
}
|
|
|
|
function proceedQueue() {
|
|
if (readyTasks.length === 0 && runningTasks === 0) {
|
|
if (rest !== 0) {
|
|
throw new Error('async.auto task has cyclic dependencies');
|
|
}
|
|
return callback(null, results);
|
|
}
|
|
while (readyTasks.length && runningTasks < concurrency && callback !== noop) {
|
|
runningTasks++;
|
|
var array = readyTasks.shift();
|
|
if (array[1] === 0) {
|
|
array[0](array[2]);
|
|
} else {
|
|
array[0](results, array[2]);
|
|
}
|
|
}
|
|
}
|
|
|
|
function taskComplete(key) {
|
|
var taskListeners = listeners[key] || [];
|
|
arrayEachSync(taskListeners, function(task) {
|
|
task();
|
|
});
|
|
proceedQueue();
|
|
}
|
|
}
|
|
|
|
var FN_ARGS = /^(function)?\s*[^\(]*\(\s*([^\)]*)\)/m;
|
|
var FN_ARG_SPLIT = /,/;
|
|
var FN_ARG = /(=.+)?(\s*)$/;
|
|
var STRIP_COMMENTS = /((\/\/.*$)|(\/\*[\s\S]*?\*\/))/gm;
|
|
|
|
/**
|
|
* parse function arguments for `autoInject`
|
|
*
|
|
* @private
|
|
*/
|
|
function parseParams(func) {
|
|
func = func.toString().replace(STRIP_COMMENTS, '');
|
|
func = func.match(FN_ARGS)[2].replace(' ', '');
|
|
func = func ? func.split(FN_ARG_SPLIT) : [];
|
|
func = func.map(function(arg) {
|
|
return arg.replace(FN_ARG, '').trim();
|
|
});
|
|
return func;
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace autoInject
|
|
* @param {Object} tasks
|
|
* @param {number} [concurrency]
|
|
* @param {Function} [callback]
|
|
*/
|
|
function autoInject(tasks, concurrency, callback) {
|
|
var newTasks = {};
|
|
baseEachSync(tasks, iterator, nativeKeys(tasks));
|
|
auto(newTasks, concurrency, callback);
|
|
|
|
function iterator(task, key) {
|
|
var params;
|
|
var taskLength = task.length;
|
|
|
|
if (isArray(task)) {
|
|
if (taskLength === 0) {
|
|
throw new Error('autoInject task functions require explicit parameters.');
|
|
}
|
|
params = createArray(task);
|
|
taskLength = params.length - 1;
|
|
task = params[taskLength];
|
|
if (taskLength === 0) {
|
|
newTasks[key] = task;
|
|
return;
|
|
}
|
|
} else if (taskLength === 1) {
|
|
newTasks[key] = task;
|
|
return;
|
|
} else {
|
|
params = parseParams(task);
|
|
if (taskLength === 0 && params.length === 0) {
|
|
throw new Error('autoInject task functions require explicit parameters.');
|
|
}
|
|
taskLength = params.length - 1;
|
|
}
|
|
params[taskLength] = newTask;
|
|
newTasks[key] = params;
|
|
|
|
function newTask(results, done) {
|
|
switch (taskLength) {
|
|
case 1:
|
|
task(results[params[0]], done);
|
|
break;
|
|
case 2:
|
|
task(results[params[0]], results[params[1]], done);
|
|
break;
|
|
case 3:
|
|
task(results[params[0]], results[params[1]], results[params[2]], done);
|
|
break;
|
|
default:
|
|
var i = -1;
|
|
while (++i < taskLength) {
|
|
params[i] = results[params[i]];
|
|
}
|
|
params[i] = done;
|
|
task.apply(null, params);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace retry
|
|
* @param {integer|Object|Function} opts
|
|
* @param {Function} [task]
|
|
* @param {Function} [callback]
|
|
*/
|
|
function retry(opts, task, callback) {
|
|
var times, intervalFunc, errorFilter;
|
|
var count = 0;
|
|
if (arguments.length < 3 && typeof opts === func) {
|
|
callback = task || noop;
|
|
task = opts;
|
|
opts = null;
|
|
times = DEFAULT_TIMES;
|
|
} else {
|
|
callback = callback || noop;
|
|
switch (typeof opts) {
|
|
case 'object':
|
|
if (typeof opts.errorFilter === func) {
|
|
errorFilter = opts.errorFilter;
|
|
}
|
|
var interval = opts.interval;
|
|
switch (typeof interval) {
|
|
case func:
|
|
intervalFunc = interval;
|
|
break;
|
|
case 'string':
|
|
case 'number':
|
|
interval = +interval;
|
|
intervalFunc = interval
|
|
? function() {
|
|
return interval;
|
|
}
|
|
: function() {
|
|
return DEFAULT_INTERVAL;
|
|
};
|
|
break;
|
|
}
|
|
times = +opts.times || DEFAULT_TIMES;
|
|
break;
|
|
case 'number':
|
|
times = opts || DEFAULT_TIMES;
|
|
break;
|
|
case 'string':
|
|
times = +opts || DEFAULT_TIMES;
|
|
break;
|
|
default:
|
|
throw new Error('Invalid arguments for async.retry');
|
|
}
|
|
}
|
|
if (typeof task !== 'function') {
|
|
throw new Error('Invalid arguments for async.retry');
|
|
}
|
|
|
|
if (intervalFunc) {
|
|
task(intervalCallback);
|
|
} else {
|
|
task(simpleCallback);
|
|
}
|
|
|
|
function simpleIterator() {
|
|
task(simpleCallback);
|
|
}
|
|
|
|
function simpleCallback(err, res) {
|
|
if (++count === times || !err || (errorFilter && !errorFilter(err))) {
|
|
if (arguments.length <= 2) {
|
|
return callback(err, res);
|
|
}
|
|
var args = createArray(arguments);
|
|
return callback.apply(null, args);
|
|
}
|
|
simpleIterator();
|
|
}
|
|
|
|
function intervalIterator() {
|
|
task(intervalCallback);
|
|
}
|
|
|
|
function intervalCallback(err, res) {
|
|
if (++count === times || !err || (errorFilter && !errorFilter(err))) {
|
|
if (arguments.length <= 2) {
|
|
return callback(err, res);
|
|
}
|
|
var args = createArray(arguments);
|
|
return callback.apply(null, args);
|
|
}
|
|
setTimeout(intervalIterator, intervalFunc(count));
|
|
}
|
|
}
|
|
|
|
function retryable(opts, task) {
|
|
if (!task) {
|
|
task = opts;
|
|
opts = null;
|
|
}
|
|
return done;
|
|
|
|
function done() {
|
|
var taskFn;
|
|
var args = createArray(arguments);
|
|
var lastIndex = args.length - 1;
|
|
var callback = args[lastIndex];
|
|
switch (task.length) {
|
|
case 1:
|
|
taskFn = task1;
|
|
break;
|
|
case 2:
|
|
taskFn = task2;
|
|
break;
|
|
case 3:
|
|
taskFn = task3;
|
|
break;
|
|
default:
|
|
taskFn = task4;
|
|
}
|
|
if (opts) {
|
|
retry(opts, taskFn, callback);
|
|
} else {
|
|
retry(taskFn, callback);
|
|
}
|
|
|
|
function task1(done) {
|
|
task(done);
|
|
}
|
|
|
|
function task2(done) {
|
|
task(args[0], done);
|
|
}
|
|
|
|
function task3(done) {
|
|
task(args[0], args[1], done);
|
|
}
|
|
|
|
function task4(callback) {
|
|
args[lastIndex] = callback;
|
|
task.apply(null, args);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace iterator
|
|
*/
|
|
function iterator(tasks) {
|
|
var size = 0;
|
|
var keys = [];
|
|
if (isArray(tasks)) {
|
|
size = tasks.length;
|
|
} else {
|
|
keys = nativeKeys(tasks);
|
|
size = keys.length;
|
|
}
|
|
return makeCallback(0);
|
|
|
|
function makeCallback(index) {
|
|
var fn = function() {
|
|
if (size) {
|
|
var key = keys[index] || index;
|
|
tasks[key].apply(null, createArray(arguments));
|
|
}
|
|
return fn.next();
|
|
};
|
|
fn.next = function() {
|
|
return index < size - 1 ? makeCallback(index + 1) : null;
|
|
};
|
|
return fn;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace apply
|
|
*/
|
|
function apply(func) {
|
|
switch (arguments.length) {
|
|
case 0:
|
|
case 1:
|
|
return func;
|
|
case 2:
|
|
return func.bind(null, arguments[1]);
|
|
case 3:
|
|
return func.bind(null, arguments[1], arguments[2]);
|
|
case 4:
|
|
return func.bind(null, arguments[1], arguments[2], arguments[3]);
|
|
case 5:
|
|
return func.bind(null, arguments[1], arguments[2], arguments[3], arguments[4]);
|
|
default:
|
|
var size = arguments.length;
|
|
var index = 0;
|
|
var args = Array(size);
|
|
args[index] = null;
|
|
while (++index < size) {
|
|
args[index] = arguments[index];
|
|
}
|
|
return func.bind.apply(func, args);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace timeout
|
|
* @param {Function} func
|
|
* @param {number} millisec
|
|
* @param {*} info
|
|
*/
|
|
function timeout(func, millisec, info) {
|
|
var callback, timer;
|
|
return wrappedFunc;
|
|
|
|
function wrappedFunc() {
|
|
timer = setTimeout(timeoutCallback, millisec);
|
|
var args = createArray(arguments);
|
|
var lastIndex = args.length - 1;
|
|
callback = args[lastIndex];
|
|
args[lastIndex] = injectedCallback;
|
|
simpleApply(func, args);
|
|
}
|
|
|
|
function timeoutCallback() {
|
|
var name = func.name || 'anonymous';
|
|
var err = new Error('Callback function "' + name + '" timed out.');
|
|
err.code = 'ETIMEDOUT';
|
|
if (info) {
|
|
err.info = info;
|
|
}
|
|
timer = null;
|
|
callback(err);
|
|
}
|
|
|
|
function injectedCallback() {
|
|
if (timer !== null) {
|
|
simpleApply(callback, createArray(arguments));
|
|
clearTimeout(timer);
|
|
}
|
|
}
|
|
|
|
function simpleApply(func, args) {
|
|
switch (args.length) {
|
|
case 0:
|
|
func();
|
|
break;
|
|
case 1:
|
|
func(args[0]);
|
|
break;
|
|
case 2:
|
|
func(args[0], args[1]);
|
|
break;
|
|
default:
|
|
func.apply(null, args);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace times
|
|
* @param {number} n - n >= 1
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* var iterator = function(n, done) {
|
|
* done(null, n);
|
|
* };
|
|
* async.times(4, iterator, function(err, res) {
|
|
* console.log(res); // [0, 1, 2, 3];
|
|
* });
|
|
*
|
|
*/
|
|
function times(n, iterator, callback) {
|
|
callback = callback || noop;
|
|
n = +n;
|
|
if (isNaN(n) || n < 1) {
|
|
return callback(null, []);
|
|
}
|
|
var result = Array(n);
|
|
timesSync(n, iterate);
|
|
|
|
function iterate(num) {
|
|
iterator(num, createCallback(num));
|
|
}
|
|
|
|
function createCallback(index) {
|
|
return function(err, res) {
|
|
if (index === null) {
|
|
throwError();
|
|
}
|
|
result[index] = res;
|
|
index = null;
|
|
if (err) {
|
|
callback(err);
|
|
callback = noop;
|
|
} else if (--n === 0) {
|
|
callback(null, result);
|
|
}
|
|
};
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace timesSeries
|
|
* @param {number} n - n >= 1
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* var iterator = function(n, done) {
|
|
* done(null, n);
|
|
* };
|
|
* async.timesSeries(4, iterator, function(err, res) {
|
|
* console.log(res); // [0, 1, 2, 3];
|
|
* });
|
|
*
|
|
*/
|
|
function timesSeries(n, iterator, callback) {
|
|
callback = callback || noop;
|
|
n = +n;
|
|
if (isNaN(n) || n < 1) {
|
|
return callback(null, []);
|
|
}
|
|
var result = Array(n);
|
|
var sync = false;
|
|
var completed = 0;
|
|
iterate();
|
|
|
|
function iterate() {
|
|
iterator(completed, done);
|
|
}
|
|
|
|
function done(err, res) {
|
|
result[completed] = res;
|
|
if (err) {
|
|
callback(err);
|
|
callback = throwError;
|
|
} else if (++completed >= n) {
|
|
callback(null, result);
|
|
callback = throwError;
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace timesLimit
|
|
* @param {number} n - n >= 1
|
|
* @param {number} limit - n >= 1
|
|
* @param {Function} iterator
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* var iterator = function(n, done) {
|
|
* done(null, n);
|
|
* };
|
|
* async.timesLimit(4, 2, iterator, function(err, res) {
|
|
* console.log(res); // [0, 1, 2, 3];
|
|
* });
|
|
*
|
|
*/
|
|
function timesLimit(n, limit, iterator, callback) {
|
|
callback = callback || noop;
|
|
n = +n;
|
|
if (isNaN(n) || n < 1 || isNaN(limit) || limit < 1) {
|
|
return callback(null, []);
|
|
}
|
|
var result = Array(n);
|
|
var sync = false;
|
|
var started = 0;
|
|
var completed = 0;
|
|
timesSync(limit > n ? n : limit, iterate);
|
|
|
|
function iterate() {
|
|
var index = started++;
|
|
if (index < n) {
|
|
iterator(index, createCallback(index));
|
|
}
|
|
}
|
|
|
|
function createCallback(index) {
|
|
return function(err, res) {
|
|
if (index === null) {
|
|
throwError();
|
|
}
|
|
result[index] = res;
|
|
index = null;
|
|
if (err) {
|
|
callback(err);
|
|
callback = noop;
|
|
} else if (++completed >= n) {
|
|
callback(null, result);
|
|
callback = throwError;
|
|
} else if (sync) {
|
|
nextTick(iterate);
|
|
} else {
|
|
sync = true;
|
|
iterate();
|
|
}
|
|
sync = false;
|
|
};
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace race
|
|
* @param {Array|Object} tasks - functions
|
|
* @param {Function} callback
|
|
* @example
|
|
*
|
|
* // array
|
|
* var called = 0;
|
|
* var tasks = [
|
|
* function(done) {
|
|
* setTimeout(function() {
|
|
* called++;
|
|
* done(null, '1');
|
|
* }, 30);
|
|
* },
|
|
* function(done) {
|
|
* setTimeout(function() {
|
|
* called++;
|
|
* done(null, '2');
|
|
* }, 20);
|
|
* },
|
|
* function(done) {
|
|
* setTimeout(function() {
|
|
* called++;
|
|
* done(null, '3');
|
|
* }, 10);
|
|
* }
|
|
* ];
|
|
* async.race(tasks, function(err, res) {
|
|
* console.log(res); // '3'
|
|
* console.log(called); // 1
|
|
* setTimeout(function() {
|
|
* console.log(called); // 3
|
|
* }, 50);
|
|
* });
|
|
*
|
|
* @example
|
|
*
|
|
* // object
|
|
* var called = 0;
|
|
* var tasks = {
|
|
* 'test1': function(done) {
|
|
* setTimeout(function() {
|
|
* called++;
|
|
* done(null, '1');
|
|
* }, 30);
|
|
* },
|
|
* 'test2': function(done) {
|
|
* setTimeout(function() {
|
|
* called++;
|
|
* done(null, '2');
|
|
* }, 20);
|
|
* },
|
|
* 'test3': function(done) {
|
|
* setTimeout(function() {
|
|
* called++;
|
|
* done(null, '3');
|
|
* }, 10);
|
|
* }
|
|
* };
|
|
* async.race(tasks, function(err, res) {
|
|
* console.log(res); // '3'
|
|
* console.log(called); // 1
|
|
* setTimeout(function() {
|
|
* console.log(called); // 3
|
|
* done();
|
|
* }, 50);
|
|
* });
|
|
*
|
|
*/
|
|
function race(tasks, callback) {
|
|
callback = once(callback || noop);
|
|
var size, keys;
|
|
var index = -1;
|
|
if (isArray(tasks)) {
|
|
size = tasks.length;
|
|
while (++index < size) {
|
|
tasks[index](callback);
|
|
}
|
|
} else if (tasks && typeof tasks === obj) {
|
|
keys = nativeKeys(tasks);
|
|
size = keys.length;
|
|
while (++index < size) {
|
|
tasks[keys[index]](callback);
|
|
}
|
|
} else {
|
|
return callback(new TypeError('First argument to race must be a collection of functions'));
|
|
}
|
|
if (!size) {
|
|
callback(null);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace memoize
|
|
*/
|
|
function memoize(fn, hasher) {
|
|
hasher =
|
|
hasher ||
|
|
function(hash) {
|
|
return hash;
|
|
};
|
|
|
|
var memo = {};
|
|
var queues = {};
|
|
var memoized = function() {
|
|
var args = createArray(arguments);
|
|
var callback = args.pop();
|
|
var key = hasher.apply(null, args);
|
|
if (has(memo, key)) {
|
|
nextTick(function() {
|
|
callback.apply(null, memo[key]);
|
|
});
|
|
return;
|
|
}
|
|
if (has(queues, key)) {
|
|
return queues[key].push(callback);
|
|
}
|
|
|
|
queues[key] = [callback];
|
|
args.push(done);
|
|
fn.apply(null, args);
|
|
|
|
function done(err) {
|
|
var args = createArray(arguments);
|
|
if (!err) {
|
|
memo[key] = args;
|
|
}
|
|
var q = queues[key];
|
|
delete queues[key];
|
|
|
|
var i = -1;
|
|
var size = q.length;
|
|
while (++i < size) {
|
|
q[i].apply(null, args);
|
|
}
|
|
}
|
|
};
|
|
memoized.memo = memo;
|
|
memoized.unmemoized = fn;
|
|
return memoized;
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace unmemoize
|
|
*/
|
|
function unmemoize(fn) {
|
|
return function() {
|
|
return (fn.unmemoized || fn).apply(null, arguments);
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace ensureAsync
|
|
*/
|
|
function ensureAsync(fn) {
|
|
return function(/* ...args, callback */) {
|
|
var args = createArray(arguments);
|
|
var lastIndex = args.length - 1;
|
|
var callback = args[lastIndex];
|
|
var sync = true;
|
|
args[lastIndex] = done;
|
|
fn.apply(this, args);
|
|
sync = false;
|
|
|
|
function done() {
|
|
var innerArgs = createArray(arguments);
|
|
if (sync) {
|
|
nextTick(function() {
|
|
callback.apply(null, innerArgs);
|
|
});
|
|
} else {
|
|
callback.apply(null, innerArgs);
|
|
}
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace constant
|
|
*/
|
|
function constant(/* values... */) {
|
|
var args = [null].concat(createArray(arguments));
|
|
return function(callback) {
|
|
callback = arguments[arguments.length - 1];
|
|
callback.apply(this, args);
|
|
};
|
|
}
|
|
|
|
function asyncify(fn) {
|
|
return function(/* args..., callback */) {
|
|
var args = createArray(arguments);
|
|
var callback = args.pop();
|
|
var result;
|
|
try {
|
|
result = fn.apply(this, args);
|
|
} catch (e) {
|
|
return callback(e);
|
|
}
|
|
if (result && typeof result.then === func) {
|
|
result.then(
|
|
function(value) {
|
|
invokeCallback(callback, null, value);
|
|
},
|
|
function(err) {
|
|
invokeCallback(callback, err && err.message ? err : new Error(err));
|
|
}
|
|
);
|
|
} else {
|
|
callback(null, result);
|
|
}
|
|
};
|
|
}
|
|
|
|
function invokeCallback(callback, err, value) {
|
|
try {
|
|
callback(err, value);
|
|
} catch (e) {
|
|
nextTick(rethrow, e);
|
|
}
|
|
}
|
|
|
|
function rethrow(error) {
|
|
throw error;
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace reflect
|
|
* @param {Function} func
|
|
* @return {Function}
|
|
*/
|
|
function reflect(func) {
|
|
return function(/* args..., callback */) {
|
|
var callback;
|
|
switch (arguments.length) {
|
|
case 1:
|
|
callback = arguments[0];
|
|
return func(done);
|
|
case 2:
|
|
callback = arguments[1];
|
|
return func(arguments[0], done);
|
|
default:
|
|
var args = createArray(arguments);
|
|
var lastIndex = args.length - 1;
|
|
callback = args[lastIndex];
|
|
args[lastIndex] = done;
|
|
func.apply(this, args);
|
|
}
|
|
|
|
function done(err, res) {
|
|
if (err) {
|
|
return callback(null, {
|
|
error: err
|
|
});
|
|
}
|
|
if (arguments.length > 2) {
|
|
res = slice(arguments, 1);
|
|
}
|
|
callback(null, {
|
|
value: res
|
|
});
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace reflectAll
|
|
* @param {Array[]|Object} tasks
|
|
* @return {Function}
|
|
*/
|
|
function reflectAll(tasks) {
|
|
var newTasks, keys;
|
|
if (isArray(tasks)) {
|
|
newTasks = Array(tasks.length);
|
|
arrayEachSync(tasks, iterate);
|
|
} else if (tasks && typeof tasks === obj) {
|
|
keys = nativeKeys(tasks);
|
|
newTasks = {};
|
|
baseEachSync(tasks, iterate, keys);
|
|
}
|
|
return newTasks;
|
|
|
|
function iterate(func, key) {
|
|
newTasks[key] = reflect(func);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace createLogger
|
|
*/
|
|
function createLogger(name) {
|
|
return function(fn) {
|
|
var args = slice(arguments, 1);
|
|
args.push(done);
|
|
fn.apply(null, args);
|
|
};
|
|
|
|
function done(err) {
|
|
if (typeof console === obj) {
|
|
if (err) {
|
|
if (console.error) {
|
|
console.error(err);
|
|
}
|
|
return;
|
|
}
|
|
if (console[name]) {
|
|
var args = slice(arguments, 1);
|
|
arrayEachSync(args, function(arg) {
|
|
console[name](arg);
|
|
});
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace safe
|
|
*/
|
|
function safe() {
|
|
createImmediate();
|
|
return exports;
|
|
}
|
|
|
|
/**
|
|
* @memberof async
|
|
* @namespace fast
|
|
*/
|
|
function fast() {
|
|
createImmediate(false);
|
|
return exports;
|
|
}
|
|
});
|