--- /dev/null
+/*
+Copyright (c) 2009, Yahoo! Inc. All rights reserved.
+Code licensed under the BSD License:
+http://developer.yahoo.net/yui/license.txt
+version: 2.7.0
+*/
+YAHOO.namespace("tool");
+
+/**
+ * The YUI JavaScript profiler.
+ * @module profiler
+ * @namespace YAHOO.tool
+ * @requires yahoo
+ */
+
+/**
+ * Profiles functions in JavaScript.
+ * @namespace YAHOO.tool
+ * @class Profiler
+ * @static
+ */
+YAHOO.tool.Profiler = {
+
+ //-------------------------------------------------------------------------
+ // Private Properties
+ //-------------------------------------------------------------------------
+
+ /**
+ * Container object on which to put the original unprofiled methods.
+ * @type Object
+ * @private
+ * @static
+ * @property _container
+ */
+ _container : new Object(),
+
+ /**
+ * Call information for functions.
+ * @type Object
+ * @private
+ * @static
+ * @property _report
+ */
+ _report : new Object(),
+
+ //-------------------------------------------------------------------------
+ // Private Methods
+ //-------------------------------------------------------------------------
+
+ /**
+ * Called when a method ends execution. Marks the start and end time of the
+ * method so it can calculate how long the function took to execute. Also
+ * updates min/max/avg calculations for the function.
+ * @param {String} name The name of the function to mark as stopped.
+ * @param {int} duration The number of milliseconds it took the function to
+ * execute.
+ * @return {Void}
+ * @private
+ * @static
+ */
+ _saveData : function (name /*:String*/, duration /*:int*/){
+
+ //get the function data
+ var functionData /*:Object*/ = this._report[name];
+
+ //increment the calls
+ functionData.calls++;
+ functionData.points.push(duration);
+
+ //if it's already been called at least once, do more complex calculations
+ if (functionData.calls > 1) {
+ functionData.avg = ((functionData.avg*(functionData.calls-1))+duration)/functionData.calls;
+ functionData.min = Math.min(functionData.min, duration);
+ functionData.max = Math.max(functionData.max, duration);
+ } else {
+ functionData.avg = duration;
+ functionData.min = duration;
+ functionData.max = duration;
+ }
+
+ },
+
+ //-------------------------------------------------------------------------
+ // Reporting Methods
+ //-------------------------------------------------------------------------
+
+ /**
+ * Returns the average amount of time (in milliseconds) that the function
+ * with the given name takes to execute.
+ * @param {String} name The name of the function whose data should be returned.
+ * If an object type method, it should be 'constructor.prototype.methodName';
+ * a normal object method would just be 'object.methodName'.
+ * @return {float} The average time it takes the function to execute.
+ * @static
+ */
+ getAverage : function (name /*:String*/) /*:float*/ {
+ return this._report[name].avg;
+ },
+
+ /**
+ * Returns the number of times that the given function has been called.
+ * @param {String} name The name of the function whose data should be returned.
+ * @return {int} The number of times the function was called.
+ * @static
+ */
+ getCallCount : function (name /*:String*/) /*:int*/ {
+ return this._report[name].calls;
+ },
+
+ /**
+ * Returns the maximum amount of time (in milliseconds) that the function
+ * with the given name takes to execute.
+ * @param {String} name The name of the function whose data should be returned.
+ * If an object type method, it should be 'constructor.prototype.methodName';
+ * a normal object method would just be 'object.methodName'.
+ * @return {float} The maximum time it takes the function to execute.
+ */
+ getMax : function (name /*:String*/) /*:int*/ {
+ return this._report[name].max;
+ },
+
+ /**
+ * Returns the minimum amount of time (in milliseconds) that the function
+ * with the given name takes to execute.
+ * @param {String} name The name of the function whose data should be returned.
+ * If an object type method, it should be 'constructor.prototype.methodName';
+ * a normal object method would just be 'object.methodName'.
+ * @return {float} The minimum time it takes the function to execute.
+ */
+ getMin : function (name /*:String*/) /*:int*/ {
+ return this._report[name].min;
+ },
+
+ /**
+ * Returns an object containing profiling data for a single function.
+ * The object has an entry for min, max, avg, calls, and points).
+ * @return {Object} An object containing profile data for a given function.
+ * @static
+ */
+ getFunctionReport : function (name /*:String*/) /*:Object*/ {
+ return this._report[name];
+ },
+
+ /**
+ * Returns an object containing profiling data for all of the functions
+ * that were profiled. The object has an entry for each function and
+ * returns all information (min, max, average, calls, etc.) for each
+ * function.
+ * @return {Object} An object containing all profile data.
+ * @static
+ */
+ getFullReport : function (filter /*:Function*/) /*:Object*/ {
+ filter = filter || function(){return true;};
+
+ if (YAHOO.lang.isFunction(filter)) {
+ var report = {};
+
+ for (var name in this._report){
+ if (filter(this._report[name])){
+ report[name] = this._report[name];
+ }
+ }
+
+ return report;
+ }
+ },
+
+ //-------------------------------------------------------------------------
+ // Profiling Methods
+ //-------------------------------------------------------------------------
+
+ /**
+ * Sets up a constructor for profiling, including all properties and methods on the prototype.
+ * @param {string} name The fully-qualified name of the function including namespace information.
+ * @param {Object} owner (Optional) The object that owns the function (namespace or containing object).
+ * @return {Void}
+ * @static
+ */
+ registerConstructor : function (name /*:String*/, owner /*:Object*/) /*:Void*/ {
+ this.registerFunction(name, owner, true);
+ },
+
+ /**
+ * Sets up a function for profiling. It essentially overwrites the function with one
+ * that has instrumentation data. This method also creates an entry for the function
+ * in the profile report. The original function is stored on the _container object.
+ * @param {String} name The full name of the function including namespacing. This
+ * is the name of the function that is stored in the report.
+ * @param {Object} owner (Optional) The object that owns the function. If the function
+ * isn't global then this argument is required. This could be the namespace that
+ * the function belongs to, such as YAHOO.util.Dom, or the object on which it's
+ * a method.
+ * @return {Void}
+ * @method registerFunction
+ */
+ registerFunction : function(name /*:String*/, owner /*:Object*/, registerPrototype /*:Boolean*/) /*:Void*/{
+
+ //figure out the function name without namespacing
+ var funcName /*:String*/ = (name.indexOf(".") > -1 ? name.substring(name.lastIndexOf(".")+1) : name);
+ if (!YAHOO.lang.isObject(owner)){
+ owner = eval(name.substring(0, name.lastIndexOf(".")));
+ }
+
+ //get the method and prototype
+ var method /*:Function*/ = owner[funcName];
+ var prototype /*:Object*/ = method.prototype;
+
+ //see if the method has already been registered
+ if (YAHOO.lang.isFunction(method) && !method.__yuiProfiled){
+
+ //create a new slot for the original method
+ this._container[name] = method;
+
+ //replace the function with the profiling one
+ owner[funcName] = function () {
+
+ var start = new Date();
+ var retval = method.apply(this, arguments);
+ var stop = new Date();
+
+ YAHOO.tool.Profiler._saveData(name, stop-start);
+
+ return retval;
+
+ };
+
+ //copy the function properties over
+ YAHOO.lang.augmentObject(owner[funcName], method);
+ owner[funcName].__yuiProfiled = true;
+ owner[funcName].prototype = prototype;
+ this._container[name].__yuiOwner = owner;
+ this._container[name].__yuiFuncName = funcName;
+
+ //register prototype if necessary
+ if (registerPrototype) {
+ this.registerObject(name + ".prototype", prototype);
+ }
+
+ //store function information
+ this._report[name] = {
+ calls: 0,
+ max: 0,
+ min: 0,
+ avg: 0,
+ points: []
+ };
+ }
+
+ return method;
+
+ },
+
+
+ /**
+ * Sets up an object for profiling. It takes the object and looks for functions.
+ * When a function is found, registerMethod() is called on it. If set to recrusive
+ * mode, it will also setup objects found inside of this object for profiling,
+ * using the same methodology.
+ * @param {String} name The name of the object to profile (shows up in report).
+ * @param {Object} owner (Optional) The object represented by the name.
+ * @param {Boolean} recurse (Optional) Determines if subobject methods are also profiled.
+ * @return {Void}
+ * @static
+ */
+ registerObject : function (name /*:String*/, object /*:Object*/, recurse /*:Boolean*/) /*:Void*/{
+
+ //get the object
+ object = (YAHOO.lang.isObject(object) ? object : eval(name));
+
+ //save the object
+ this._container[name] = object;
+
+ for (var prop in object) {
+ if (typeof object[prop] == "function"){
+ if (prop != "constructor" && prop != "superclass"){ //don't do constructor or superclass, it's recursive
+ this.registerFunction(name + "." + prop, object);
+ }
+ } else if (typeof object[prop] == "object" && recurse){
+ this.registerObject(name + "." + prop, object[prop], recurse);
+ }
+ }
+
+ },
+
+ /**
+ * Removes a constructor function from profiling. Reverses the registerConstructor() method.
+ * @param {String} name The full name of the function including namespacing. This
+ * is the name of the function that is stored in the report.
+ * @return {Void}
+ * @method unregisterFunction
+ */
+ unregisterConstructor : function(name /*:String*/) /*:Void*/{
+
+ //see if the method has been registered
+ if (YAHOO.lang.isFunction(this._container[name])){
+
+ //get original data
+ //var owner /*:Object*/ = this._container[name].__yuiOwner;
+ //var funcName /*:String*/ = this._container[name].__yuiFuncName;
+ //delete this._container[name].__yuiOwner;
+ //delete this._container[name].__yuiFuncName;
+
+ //replace instrumented function
+ //owner[funcName] = this._container[name];
+ //delete this._container[name];
+ this.unregisterFunction(name, true);
+
+ }
+
+
+ },
+
+ /**
+ * Removes function from profiling. Reverses the registerFunction() method.
+ * @param {String} name The full name of the function including namespacing. This
+ * is the name of the function that is stored in the report.
+ * @return {Void}
+ * @method unregisterFunction
+ */
+ unregisterFunction : function(name /*:String*/, unregisterPrototype /*:Boolean*/) /*:Void*/{
+
+ //see if the method has been registered
+ if (YAHOO.lang.isFunction(this._container[name])){
+
+ //check to see if you should unregister the prototype
+ if (unregisterPrototype){
+ this.unregisterObject(name + ".prototype", this._container[name].prototype);
+ }
+
+ //get original data
+ var owner /*:Object*/ = this._container[name].__yuiOwner;
+ var funcName /*:String*/ = this._container[name].__yuiFuncName;
+ delete this._container[name].__yuiOwner;
+ delete this._container[name].__yuiFuncName;
+
+ //replace instrumented function
+ owner[funcName] = this._container[name];
+
+ //delete supporting information
+ delete this._container[name];
+ delete this._report[name];
+
+ }
+
+
+ },
+
+ /**
+ * Unregisters an object for profiling. It takes the object and looks for functions.
+ * When a function is found, unregisterMethod() is called on it. If set to recrusive
+ * mode, it will also unregister objects found inside of this object,
+ * using the same methodology.
+ * @param {String} name The name of the object to unregister.
+ * @param {Boolean} recurse (Optional) Determines if subobject methods should also be
+ * unregistered.
+ * @return {Void}
+ * @static
+ */
+ unregisterObject : function (name /*:String*/, recurse /*:Boolean*/) /*:Void*/{
+
+ //get the object
+ if (YAHOO.lang.isObject(this._container[name])){
+ var object = this._container[name];
+
+ for (var prop in object) {
+ if (typeof object[prop] == "function"){
+ this.unregisterFunction(name + "." + prop);
+ } else if (typeof object[prop] == "object" && recurse){
+ this.unregisterObject(name + "." + prop, recurse);
+ }
+ }
+
+ delete this._container[name];
+ }
+
+ }
+
+
+};
+YAHOO.register("profiler", YAHOO.tool.Profiler, {version: "2.7.0", build: "1799"});
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