update non-blocking foreach/map
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7138a8eaa0
commit
c3c79e5f0a
1 changed files with 42 additions and 21 deletions
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@ -1,3 +1,5 @@
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'use strict';
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(function() {
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function asyncMap(forEach, col, iterator, that, callback) {
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@ -32,7 +34,7 @@
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(col, iterator[, that], callback[, ms]) -> <u> undefined
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@*/
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Ox.nonblockingForEach = function(col, iterator, that, callback, ms) {
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var i, keys, last = Ox.last(arguments), n, time, type = Ox.typeOf(col);
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var i = 0, keys, last = Ox.last(arguments), n, time, type = Ox.typeOf(col);
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callback = Ox.isFunction(last) ? last : arguments[arguments.length - 2];
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col = type == 'array' || type == 'object' ? col : Ox.toArray(col);
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keys = type == 'object' ? Object.keys(col) : Ox.range(col.length);
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@ -44,16 +46,25 @@
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time = +new Date();
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iterate();
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function iterate() {
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keys[i] in col && iterator.call(that, col[keys[i]], keys[i], col);
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if (++i < n) {
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if (+new Date() < time + ms) {
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iterate();
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} else {
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setTimeout(function() {
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time = +new Date();
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iterate();
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});
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Ox.forEach(keys.slice(i), function(key) {
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if (key in col) {
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try {
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iterator.call(that, col[key], key, col);
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} catch(e) {
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if (e === Ox.BreakError) {
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i = n;
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}
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throw e;
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}
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}
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i++;
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+new Date() >= time + ms && Ox.break();
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});
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if (i < n) {
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setTimeout(function() {
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time = +new Date();
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iterate();
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}, 1);
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} else {
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callback();
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}
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@ -62,28 +73,38 @@
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/*@
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Ox.nonblockingMap <f> Non-blocking map with synchronous iterator
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(col, iterator[, that], callback) -> <u> undefined
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(col, iterator[, that]) -> <u> undefined
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col <a|o|s> Collection
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iterator <f> Iterator function
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that <o> The iterator's this binding
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callback <f> Callback function
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<script>
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var time = +new Date();
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Ox.serialMap(
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Ox.range(10),
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function (value, index, array, callback) {
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setTimeout(function() {
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callback(+new Date() - time);
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}, Ox.random(1000));
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Ox.nonblockingMap(
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Ox.range(1000000),
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function (value, index, array) {
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return +new Date() - time;
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},
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function(results) {
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Ox.print(results);
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}
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Ox.print(results.length);
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},
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1000
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);
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</script>
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@*/
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Ox.nonblockingMap = function() {
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asyncMap.apply(null, [Ox.nonblockingForEach].concat(Ox.toArray(arguments)));
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Ox.nonblockingMap = function(col, iterator, that, callback, ms) {
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var last = Ox.last(arguments),
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type = Ox.typeOf(col),
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results = type == 'object' ? {} : [];
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callback = Ox.isFunction(last) ? last : arguments[arguments.length - 2];
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that = arguments.length == 5 || (
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arguments.length == 4 && Ox.isFunction(last)
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) ? that : null;
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Ox.nonblockingForEach(col, function(val, key, obj) {
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results[key] = iterator.call(that, val, key, obj);
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}, function() {
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callback(type == 'string' ? results.join('') : results);
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}, ms);
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};
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/*@
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