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<!DOCTYPE html>
<html>
<!--
Copyright 2012 The Closure Library Authors. All Rights Reserved.
Use of this source code is governed by the Apache License, Version 2.0.
See the COPYING file for details.
-->
<!--
-->
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Closure Performance Tests - goog.json vs JSON</title>
<link rel="stylesheet" type="text/css" href="../testing/performancetable.css"/>
<script src="../base.js"></script>
<script>
goog.require('goog.json');
goog.require('goog.string');
goog.require('goog.testing.PerformanceTable');
goog.require('goog.testing.PropertyReplacer');
goog.require('goog.testing.jsunit');
</script>
</head>
<body>
<h1>goog.json and JSON Performance Tests</h1>
<p>
<strong>User-agent:</strong>
<script>document.write(navigator.userAgent);</script>
</p>
<div id="perfTable"></div>
<hr>
<script>
var table = new goog.testing.PerformanceTable(
goog.dom.getElement('perfTable'));
var stubs = new goog.testing.PropertyReplacer();
function tearDown() {
stubs.reset();
}
function testSerialize() {
var obj = populateObject({}, 50, 4);
table.run(function() {
var s = JSON.stringify(obj);
}, 'Stringify using JSON.stringify');
table.run(function() {
var s = goog.json.serialize(obj);
}, 'Stringify using goog.json.serialize');
}
function testParse() {
var obj = populateObject({}, 50, 4);
var s = JSON.stringify(obj);
table.run(function() {
var o = JSON.parse(s);
}, 'Parse using JSON.parse');
table.run(function() {
var o = goog.json.parse(s);
}, 'Parse using goog.json.parse');
table.run(function() {
var o = goog.json.unsafeParse(s);
}, 'Parse using goog.json.unsafeParse');
}
/**
* @param obj The object to add properties to.
* @param numProperties The number of properties to add.
* @param depth The depth at which to recursively add properties.
*/
function populateObject(obj, numProperties, depth) {
if (depth == 0) {
return randomLiteral();
}
// Make an object with a mix of strings, numbers, arrays, objects, booleans
// nulls as children.
for (var i = 0; i < numProperties; i++) {
var bucket = goog.math.randomInt(3);
switch (bucket) {
case 0:
obj[i] = randomLiteral();
break;
case 1:
obj[i] = populateObject({}, numProperties, depth - 1);
break;
case 2:
obj[i] = populateObject([], numProperties, depth - 1);
break;
}
}
return obj;
}
function randomLiteral() {
var bucket = goog.math.randomInt(3);
switch (bucket) {
case 0:
return goog.string.getRandomString();
case 1:
return Math.random();
case 2:
return Math.random() >= .5;
}
return null;
}
</script>
</body>
</html>
|
