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rushfrisby/JsEnginePerformanceComparison.js

Last active August 29, 2015 14:04
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JavaScript Engine Performance Comparison - http://rushfrisby.com/which-net-javascript-engine-is-the-fastest/
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JsEnginePerformanceComparison.js
using System;
using System.Diagnostics;
namespace JsEnginePerformanceComparison
{
class Program
{
static void Main()
{
var done = false;
var sw = new Stopwatch();
sw.Start();
for (var i = 0; i < N; i++)
{
var jintEngine = new Jint.Engine();
jintEngine.Execute(currentScript);
done = jintEngine.GetValue("done").AsBoolean();
}
sw.Stop();
Console.WriteLine("jint: " + sw.ElapsedMilliseconds / N + " - " + done);
done = false;
sw.Restart();
for (var i = 0; i < N; i++)
{
var ironjsEngine = new IronJS.Hosting.CSharp.Context();
ironjsEngine.Execute(currentScript);
done = ironjsEngine.GetGlobalAs<bool>("done");
}
sw.Stop();
Console.WriteLine("ironjs: " + sw.ElapsedMilliseconds / N + " - " + done);
done = false;
sw.Restart();
for (var i = 0; i < N; i++)
{
using (var jsNetEngine = new Noesis.Javascript.JavascriptContext())
{
jsNetEngine.Run(currentScript);
done = (bool) jsNetEngine.GetParameter("done");
}
}
sw.Stop();
Console.WriteLine("js.net: " + sw.ElapsedMilliseconds / N + " - " + done);
done = false;
sw.Restart();
for (var i = 0; i < N; i++)
{
var jurassicEngine = new Jurassic.ScriptEngine();
jurassicEngine.Execute(currentScript);
done = jurassicEngine.GetGlobalValue<bool>("done");
}
sw.Stop();
Console.WriteLine("jurassic: " + sw.ElapsedMilliseconds / N + " - " + done);
done = false;
sw.Restart();
for (var i = 0; i < N; i++)
{
using (var clearscriptV8 = new Microsoft.ClearScript.V8.V8ScriptEngine())
{
clearscriptV8.Execute(currentScript);
done = clearscriptV8.Script.done;
}
}
sw.Stop();
Console.WriteLine("clearscriptV8: " + sw.ElapsedMilliseconds / N + " - " + done);
done = false;
sw.Restart();
using (var clearscriptV8 = new Microsoft.ClearScript.V8.V8Runtime())
{
var compiled = clearscriptV8.Compile(currentScript);
for (var i = 0; i < N; i++)
{
using (var engine = clearscriptV8.CreateScriptEngine())
{
engine.Evaluate(compiled);
done = engine.Script.done;
}
}
}
sw.Stop();
Console.WriteLine("clearscriptV8 compiled: " + sw.ElapsedMilliseconds / N + " - " + done);
done = false;
sw.Restart();
for (var i = 0; i < N; i++)
{
var nilcontext = new NiL.JS.Core.Context();
nilcontext.Eval(currentScript);
done = (bool)nilcontext.GetVariable("done");
}
sw.Stop();
Console.WriteLine("niljs: " + sw.ElapsedMilliseconds / N + " - " + done);
Console.Read();
}
private const string currentScript = almostNothing;
private const int N = 5000;
private const string arrayTests = "var ret=[],tmp,num=500,i=1024;for(var j1=0;j1<i*15;j1++){ret=[];ret.length=i}for(var j2=0;j2<i*10;j2++){ret=new Array(i)}ret=[];for(var j3=0;j3<i;j3++){ret.unshift(j3)}ret=[];for(var j4=0;j4<i;j4++){ret.splice(0,0,j4)}var a=ret.slice();for(var j5=0;j5<i;j5++){tmp=a.shift()}var b=ret.slice();for(var j6=0;j6<i;j6++){tmp=b.splice(0,1)}ret=[];for(var j7=0;j7<i*25;j7++){ret.push(j7)}var c=ret.slice();for(var j8=0;j8<i*25;j8++){tmp=c.pop()}var done = true;";
private const string almostNothing = "var done = true;";
private const string linqJs = "(function(w,j){var l=\"enumerator is disposed\",q=\"single:sequence contains more than one element.\",a=false,b=null,e=true,g={Identity:function(a){return a},True:function(){return e},Blank:function(){}},i={Boolean:typeof e,Number:typeof 0,String:typeof\"\",Object:typeof{},Undefined:typeof j,Function:typeof function(){}},d={createLambda:function(a){if(a==b)return g.Identity;if(typeof a==i.String)if(a==\"\")return g.Identity;else if(a.indexOf(\"=>\")==-1){var m=new RegExp(\"[$]+\",\"g\"),c=0,j;while(j=m.exec(a)){var e=j[0].length;if(e>c)c=e}for(var f=[],d=1;d<=c;d++){for(var h=\"\",l=0;l<d;l++)h+=\"$\";f.push(h)}var n=Array.prototype.join.call(f,\",\");return new Function(n,\"return \"+a)}else{var k=a.match(/^[(\\s]*([^()]*?)[)\\s]*=>(.*)/);return new Function(k[1],\"return \"+k[2])}return a},isIEnumerable:function(b){if(typeof Enumerator!==i.Undefined)try{new Enumerator(b);return e}catch(c){}return a},defineProperty:Object.defineProperties!=b?function(c,b,d){Object.defineProperty(c,b,{enumerable:a,configurable:e,writable:e,value:d})}:function(b,a,c){b[a]=c},compare:function(a,b){return a===b?0:a>b?1:-1},dispose:function(a){a!=b&&a.dispose()}},o={Before:0,Running:1,After:2},f=function(d,f,g){var c=new u,b=o.Before;this.current=c.current;this.moveNext=function(){try{switch(b){case o.Before:b=o.Running;d();case o.Running:if(f.apply(c))return e;else{this.dispose();return a}case o.After:return a}}catch(g){this.dispose();throw g;}};this.dispose=function(){if(b!=o.Running)return;try{g()}finally{b=o.After}}},u=function(){var c=b;this.current=function(){return c};this.yieldReturn=function(a){c=a;return e};this.yieldBreak=function(){return a}},c=function(a){this.getEnumerator=a};c.Utils={};c.Utils.createLambda=function(a){return d.createLambda(a)};c.Utils.createEnumerable=function(a){return new c(a)};c.Utils.createEnumerator=function(a,b,c){return new f(a,b,c)};c.Utils.extendTo=function(i){var e=i.prototype,f;if(i===Array){f=h.prototype;d.defineProperty(e,\"getSource\",function(){return this})}else{f=c.prototype;d.defineProperty(e,\"getEnumerator\",function(){return c.from(this).getEnumerator()})}for(var a in f){var g=f[a];if(e[a]==g)continue;if(e[a]!=b){a=a+\"ByLinq\";if(e[a]==g)continue}g instanceof Function&&d.defineProperty(e,a,g)}};c.choice=function(){var a=arguments;return new c(function(){return new f(function(){a=a[0]instanceof Array?a[0]:a[0].getEnumerator!=b?a[0].toArray():a},function(){return this.yieldReturn(a[Math.floor(Math.random()*a.length)])},g.Blank)})};c.cycle=function(){var a=arguments;return new c(function(){var c=0;return new f(function(){a=a[0]instanceof Array?a[0]:a[0].getEnumerator!=b?a[0].toArray():a},function(){if(c>=a.length)c=0;return this.yieldReturn(a[c++])},g.Blank)})};c.empty=function(){return new c(function(){return new f(g.Blank,function(){return a},g.Blank)})};c.from=function(j){if(j==b)return c.empty();if(j instanceof c)return j;if(typeof j==i.Number||typeof j==i.Boolean)return c.repeat(j,1);if(typeof j==i.String)return new c(function(){var b=0;return new f(g.Blank,function(){return b<j.length?this.yieldReturn(j.charAt(b++)):a},g.Blank)});if(typeof j!=i.Function){if(typeof j.length==i.Number)return new h(j);if(!(j instanceof Object)&&d.isIEnumerable(j))return new c(function(){var c=e,b;return new f(function(){b=new Enumerator(j)},function(){if(c)c=a;else b.moveNext();return b.atEnd()?a:this.yieldReturn(b.item())},g.Blank)});if(typeof Windows===i.Object&&typeof j.first===i.Function)return new c(function(){var c=e,b;return new f(function(){b=j.first()},function(){if(c)c=a;else b.moveNext();return b.hasCurrent?this.yieldReturn(b.current):this.yieldBreak()},g.Blank)})}return new c(function(){var b=[],c=0;return new f(function(){for(var a in j){var c=j[a];!(c instanceof Function)&&Object.prototype.hasOwnProperty.call(j,a)&&b.push({key:a,value:c})}},function(){return c<b.length?this.yieldReturn(b[c++]):a},g.Blank)})},c.make=function(a){return c.repeat(a,1)};c.matches=function(h,e,d){if(d==b)d=\"\";if(e instanceof RegExp){d+=e.ignoreCase?\"i\":\"\";d+=e.multiline?\"m\":\"\";e=e.source}if(d.indexOf(\"g\")===-1)d+=\"g\";return new c(function(){var b;return new f(function(){b=new RegExp(e,d)},function(){var c=b.exec(h);return c?this.yieldReturn(c):a},g.Blank)})};c.range=function(e,d,a){if(a==b)a=1;return new c(function(){var b,c=0;return new f(function(){b=e-a},function(){return c++<d?this.yieldReturn(b+=a):this.yieldBreak()},g.Blank)})};c.rangeDown=function(e,d,a){if(a==b)a=1;return new c(function(){var b,c=0;return new f(function(){b=e+a},function(){return c++<d?this.yieldReturn(b-=a):this.yieldBreak()},g.Blank)})};c.rangeTo=function(d,e,a){if(a==b)a=1;return d<e?new c(function(){var b;return new f(function(){b=d-a},function(){var c=b+=a;return c<=e?this.yieldReturn(c):this.yieldBreak()},g.Blank)}):new c(function(){var b;return new f(function(){b=d+a},function(){var c=b-=a;return c>=e?this.yieldReturn(c):this.yieldBreak()},g.Blank)})};c.repeat=function(a,d){return d!=b?c.repeat(a).take(d):new c(function(){return new f(g.Blank,function(){return this.yieldReturn(a)},g.Blank)})};c.repeatWithFinalize=function(a,e){a=d.createLambda(a);e=d.createLambda(e);return new c(function(){var c;return new f(function(){c=a()},function(){return this.yieldReturn(c)},function(){if(c!=b){e(c);c=b}})})};c.generate=function(a,e){if(e!=b)return c.generate(a).take(e);a=d.createLambda(a);return new c(function(){return new f(g.Blank,function(){return this.yieldReturn(a())},g.Blank)})};c.toInfinity=function(d,a){if(d==b)d=0;if(a==b)a=1;return new c(function(){var b;return new f(function(){b=d-a},function(){return this.yieldReturn(b+=a)},g.Blank)})};c.toNegativeInfinity=function(d,a){if(d==b)d=0;if(a==b)a=1;return new c(function(){var b;return new f(function(){b=d+a},function(){return this.yieldReturn(b-=a)},g.Blank)})};c.unfold=function(h,b){b=d.createLambda(b);return new c(function(){var d=e,c;return new f(g.Blank,function(){if(d){d=a;c=h;return this.yieldReturn(c)}c=b(c);return this.yieldReturn(c)},g.Blank)})};c.defer=function(a){return new c(function(){var b;return new f(function(){b=c.from(a()).getEnumerator()},function(){return b.moveNext()?this.yieldReturn(b.current()):this.yieldBreak()},function(){d.dispose(b)})})};c.prototype.traverseBreadthFirst=function(g,b){var h=this;g=d.createLambda(g);b=d.createLambda(b);return new c(function(){var i,k=0,j=[];return new f(function(){i=h.getEnumerator()},function(){while(e){if(i.moveNext()){j.push(i.current());return this.yieldReturn(b(i.current(),k))}var f=c.from(j).selectMany(function(a){return g(a)});if(!f.any())return a;else{k++;j=[];d.dispose(i);i=f.getEnumerator()}}},function(){d.dispose(i)})})};c.prototype.traverseDepthFirst=function(g,b){var h=this;g=d.createLambda(g);b=d.createLambda(b);return new c(function(){var j=[],i;return new f(function(){i=h.getEnumerator()},function(){while(e){if(i.moveNext()){var f=b(i.current(),j.length);j.push(i);i=c.from(g(i.current())).getEnumerator();return this.yieldReturn(f)}if(j.length<=0)return a;d.dispose(i);i=j.pop()}},function(){try{d.dispose(i)}finally{c.from(j).forEach(function(a){a.dispose()})}})})};c.prototype.flatten=function(){var h=this;return new c(function(){var j,i=b;return new f(function(){j=h.getEnumerator()},function(){while(e){if(i!=b)if(i.moveNext())return this.yieldReturn(i.current());else i=b;if(j.moveNext())if(j.current()instanceof Array){d.dispose(i);i=c.from(j.current()).selectMany(g.Identity).flatten().getEnumerator();continue}else return this.yieldReturn(j.current());return a}},function(){try{d.dispose(j)}finally{d.dispose(i)}})})};c.prototype.pairwise=function(b){var e=this;b=d.createLambda(b);return new c(function(){var c;return new f(function(){c=e.getEnumerator();c.moveNext()},function(){var d=c.current();return c.moveNext()?this.yieldReturn(b(d,c.current())):a},function(){d.dispose(c)})})};c.prototype.scan=function(i,g){var h;if(g==b){g=d.createLambda(i);h=a}else{g=d.createLambda(g);h=e}var j=this;return new c(function(){var b,c,k=e;return new f(function(){b=j.getEnumerator()},function(){if(k){k=a;if(!h){if(b.moveNext())return this.yieldReturn(c=b.current())}else return this.yieldReturn(c=i)}return b.moveNext()?this.yieldReturn(c=g(c,b.current())):a},function(){d.dispose(b)})})};c.prototype.select=function(e){e=d.createLambda(e);if(e.length<=1)return new m(this,b,e);else{var g=this;return new c(function(){var b,c=0;return new f(function(){b=g.getEnumerator()},function(){return b.moveNext()?this.yieldReturn(e(b.current(),c++)):a},function(){d.dispose(b)})})}};c.prototype.selectMany=function(g,e){var h=this;g=d.createLambda(g);if(e==b)e=function(b,a){return a};e=d.createLambda(e);return new c(function(){var k,i=j,l=0;return new f(function(){k=h.getEnumerator()},function(){if(i===j)if(!k.moveNext())return a;do{if(i==b){var f=g(k.current(),l++);i=c.from(f).getEnumerator()}if(i.moveNext())return this.yieldReturn(e(k.current(),i.current()));d.dispose(i);i=b}while(k.moveNext());return a},function(){try{d.dispose(k)}finally{d.dispose(i)}})})};c.prototype.where=function(b){b=d.createLambda(b);if(b.length<=1)return new n(this,b);else{var e=this;return new c(function(){var c,g=0;return new f(function(){c=e.getEnumerator()},function(){while(c.moveNext())if(b(c.current(),g++))return this.yieldReturn(c.current());return a},function(){d.dispose(c)})})}};c.prototype.choose=function(a){a=d.createLambda(a);var e=this;return new c(function(){var c,g=0;return new f(function(){c=e.getEnumerator()},function(){while(c.moveNext()){var d=a(c.current(),g++);if(d!=b)return this.yieldReturn(d)}return this.yieldBreak()},function(){d.dispose(c)})})};c.prototype.ofType=function(c){var a;switch(c){case Number:a=i.Number;break;case String:a=i.String;break;case Boolean:a=i.Boolean;break;case Function:a=i.Function;break;default:a=b}return a===b?this.where(function(a){return a instanceof c}):this.where(function(b){return typeof b===a})};c.prototype.zip=function(){var i=arguments,e=d.createLambda(arguments[arguments.length-1]),g=this;if(arguments.length==2){var h=arguments[0];return new c(function(){var i,b,j=0;return new f(function(){i=g.getEnumerator();b=c.from(h).getEnumerator()},function(){return i.moveNext()&&b.moveNext()?this.yieldReturn(e(i.current(),b.current(),j++)):a},function(){try{d.dispose(i)}finally{d.dispose(b)}})})}else return new c(function(){var a,h=0;return new f(function(){var b=c.make(g).concat(c.from(i).takeExceptLast().select(c.from)).select(function(a){return a.getEnumerator()}).toArray();a=c.from(b)},function(){if(a.all(function(a){return a.moveNext()})){var c=a.select(function(a){return a.current()}).toArray();c.push(h++);return this.yieldReturn(e.apply(b,c))}else return this.yieldBreak()},function(){c.from(a).forEach(d.dispose)})})};c.prototype.merge=function(){var b=arguments,a=this;return new c(function(){var e,g=-1;return new f(function(){e=c.make(a).concat(c.from(b).select(c.from)).select(function(a){return a.getEnumerator()}).toArray()},function(){while(e.length>0){g=g>=e.length-1?0:g+1;var a=e[g];if(a.moveNext())return this.yieldReturn(a.current());else{a.dispose();e.splice(g--,1)}}return this.yieldBreak()},function(){c.from(e).forEach(d.dispose)})})};c.prototype.join=function(n,i,h,l,k){i=d.createLambda(i);h=d.createLambda(h);l=d.createLambda(l);k=d.createLambda(k);var m=this;return new c(function(){var o,r,p=b,q=0;return new f(function(){o=m.getEnumerator();r=c.from(n).toLookup(h,g.Identity,k)},function(){while(e){if(p!=b){var c=p[q++];if(c!==j)return this.yieldReturn(l(o.current(),c));c=b;q=0}if(o.moveNext()){var d=i(o.current());p=r.get(d).toArray()}else return a}},function(){d.dispose(o)})})};c.prototype.groupJoin=function(l,h,e,j,i){h=d.createLambda(h);e=d.createLambda(e);j=d.createLambda(j);i=d.createLambda(i);var k=this;return new c(function(){var m=k.getEnumerator(),n=b;return new f(function(){m=k.getEnumerator();n=c.from(l).toLookup(e,g.Identity,i)},function(){if(m.moveNext()){var b=n.get(h(m.current()));return this.yieldReturn(j(m.current(),b))}return a},function(){d.dispose(m)})})};c.prototype.all=function(b){b=d.createLambda(b);var c=e;this.forEach(function(d){if(!b(d)){c=a;return a}});return c};c.prototype.any=function(c){c=d.createLambda(c);var b=this.getEnumerator();try{if(arguments.length==0)return b.moveNext();while(b.moveNext())if(c(b.current()))return e;return a}finally{d.dispose(b)}};c.prototype.isEmpty=function(){return!this.any()};c.prototype.concat=function(){var e=this;if(arguments.length==1){var g=arguments[0];return new c(function(){var i,h;return new f(function(){i=e.getEnumerator()},function(){if(h==b){if(i.moveNext())return this.yieldReturn(i.current());h=c.from(g).getEnumerator()}return h.moveNext()?this.yieldReturn(h.current()):a},function(){try{d.dispose(i)}finally{d.dispose(h)}})})}else{var h=arguments;return new c(function(){var a;return new f(function(){a=c.make(e).concat(c.from(h).select(c.from)).select(function(a){return a.getEnumerator()}).toArray()},function(){while(a.length>0){var b=a[0];if(b.moveNext())return this.yieldReturn(b.current());else{b.dispose();a.splice(0,1)}}return this.yieldBreak()},function(){c.from(a).forEach(d.dispose)})})}};c.prototype.insert=function(h,b){var g=this;return new c(function(){var j,i,l=0,k=a;return new f(function(){j=g.getEnumerator();i=c.from(b).getEnumerator()},function(){if(l==h&&i.moveNext()){k=e;return this.yieldReturn(i.current())}if(j.moveNext()){l++;return this.yieldReturn(j.current())}return!k&&i.moveNext()?this.yieldReturn(i.current()):a},function(){try{d.dispose(j)}finally{d.dispose(i)}})})};c.prototype.alternate=function(a){var g=this;return new c(function(){var j,i,k,h;return new f(function(){if(a instanceof Array||a.getEnumerator!=b)k=c.from(c.from(a).toArray());else k=c.make(a);i=g.getEnumerator();if(i.moveNext())j=i.current()},function(){while(e){if(h!=b)if(h.moveNext())return this.yieldReturn(h.current());else h=b;if(j==b&&i.moveNext()){j=i.current();h=k.getEnumerator();continue}else if(j!=b){var a=j;j=b;return this.yieldReturn(a)}return this.yieldBreak()}},function(){try{d.dispose(i)}finally{d.dispose(h)}})})};c.prototype.contains=function(f,b){b=d.createLambda(b);var c=this.getEnumerator();try{while(c.moveNext())if(b(c.current())===f)return e;return a}finally{d.dispose(c)}};c.prototype.defaultIfEmpty=function(g){var h=this;if(g===j)g=b;return new c(function(){var b,c=e;return new f(function(){b=h.getEnumerator()},function(){if(b.moveNext()){c=a;return this.yieldReturn(b.current())}else if(c){c=a;return this.yieldReturn(g)}return a},function(){d.dispose(b)})})};c.prototype.distinct=function(a){return this.except(c.empty(),a)};c.prototype.distinctUntilChanged=function(b){b=d.createLambda(b);var e=this;return new c(function(){var c,g,h;return new f(function(){c=e.getEnumerator()},function(){while(c.moveNext()){var d=b(c.current());if(h){h=a;g=d;return this.yieldReturn(c.current())}if(g===d)continue;g=d;return this.yieldReturn(c.current())}return this.yieldBreak()},function(){d.dispose(c)})})};c.prototype.except=function(e,b){b=d.createLambda(b);var g=this;return new c(function(){var h,i;return new f(function(){h=g.getEnumerator();i=new r(b);c.from(e).forEach(function(a){i.add(a)})},function(){while(h.moveNext()){var b=h.current();if(!i.contains(b)){i.add(b);return this.yieldReturn(b)}}return a},function(){d.dispose(h)})})};c.prototype.intersect=function(e,b){b=d.createLambda(b);var g=this;return new c(function(){var h,i,j;return new f(function(){h=g.getEnumerator();i=new r(b);c.from(e).forEach(function(a){i.add(a)});j=new r(b)},function(){while(h.moveNext()){var b=h.current();if(!j.contains(b)&&i.contains(b)){j.add(b);return this.yieldReturn(b)}}return a},function(){d.dispose(h)})})};c.prototype.sequenceEqual=function(h,f){f=d.createLambda(f);var g=this.getEnumerator();try{var b=c.from(h).getEnumerator();try{while(g.moveNext())if(!b.moveNext()||f(g.current())!==f(b.current()))return a;return b.moveNext()?a:e}finally{d.dispose(b)}}finally{d.dispose(g)}};c.prototype.union=function(e,b){b=d.createLambda(b);var g=this;return new c(function(){var k,h,i;return new f(function(){k=g.getEnumerator();i=new r(b)},function(){var b;if(h===j){while(k.moveNext()){b=k.current();if(!i.contains(b)){i.add(b);return this.yieldReturn(b)}}h=c.from(e).getEnumerator()}while(h.moveNext()){b=h.current();if(!i.contains(b)){i.add(b);return this.yieldReturn(b)}}return a},function(){try{d.dispose(k)}finally{d.dispose(h)}})})};c.prototype.orderBy=function(b){return new k(this,b,a)};c.prototype.orderByDescending=function(a){return new k(this,a,e)};c.prototype.reverse=function(){var b=this;return new c(function(){var c,d;return new f(function(){c=b.toArray();d=c.length},function(){return d>0?this.yieldReturn(c[--d]):a},g.Blank)})};c.prototype.shuffle=function(){var b=this;return new c(function(){var c;return new f(function(){c=b.toArray()},function(){if(c.length>0){var b=Math.floor(Math.random()*c.length);return this.yieldReturn(c.splice(b,1)[0])}return a},g.Blank)})};c.prototype.weightedSample=function(a){a=d.createLambda(a);var e=this;return new c(function(){var c,d=0;return new f(function(){c=e.choose(function(e){var c=a(e);if(c<=0)return b;d+=c;return{value:e,bound:d}}).toArray()},function(){if(c.length>0){var f=Math.floor(Math.random()*d)+1,e=-1,a=c.length;while(a-e>1){var b=Math.floor((e+a)/2);if(c[b].bound>=f)a=b;else e=b}return this.yieldReturn(c[a].value)}return this.yieldBreak()},g.Blank)})};c.prototype.groupBy=function(i,h,e,g){var j=this;i=d.createLambda(i);h=d.createLambda(h);if(e!=b)e=d.createLambda(e);g=d.createLambda(g);return new c(function(){var c;return new f(function(){c=j.toLookup(i,h,g).toEnumerable().getEnumerator()},function(){while(c.moveNext())return e==b?this.yieldReturn(c.current()):this.yieldReturn(e(c.current().key(),c.current()));return a},function(){d.dispose(c)})})};c.prototype.partitionBy=function(j,i,g,h){var l=this;j=d.createLambda(j);i=d.createLambda(i);h=d.createLambda(h);var k;if(g==b){k=a;g=function(b,a){return new t(b,a)}}else{k=e;g=d.createLambda(g)}return new c(function(){var b,n,o,m=[];return new f(function(){b=l.getEnumerator();if(b.moveNext()){n=j(b.current());o=h(n);m.push(i(b.current()))}},function(){var d;while((d=b.moveNext())==e)if(o===h(j(b.current())))m.push(i(b.current()));else break;if(m.length>0){var f=k?g(n,c.from(m)):g(n,m);if(d){n=j(b.current());o=h(n);m=[i(b.current())]}else m=[];return this.yieldReturn(f)}return a},function(){d.dispose(b)})})};c.prototype.buffer=function(e){var b=this;return new c(function(){var c;return new f(function(){c=b.getEnumerator()},function(){var b=[],d=0;while(c.moveNext()){b.push(c.current());if(++d>=e)return this.yieldReturn(b)}return b.length>0?this.yieldReturn(b):a},function(){d.dispose(c)})})};c.prototype.aggregate=function(c,b,a){a=d.createLambda(a);return a(this.scan(c,b,a).last())};c.prototype.average=function(a){a=d.createLambda(a);var c=0,b=0;this.forEach(function(d){c+=a(d);++b});return c/b};c.prototype.count=function(a){a=a==b?g.True:d.createLambda(a);var c=0;this.forEach(function(d,b){if(a(d,b))++c});return c};c.prototype.max=function(a){if(a==b)a=g.Identity;return this.select(a).aggregate(function(a,b){return a>b?a:b})};c.prototype.min=function(a){if(a==b)a=g.Identity;return this.select(a).aggregate(function(a,b){return a<b?a:b})};c.prototype.maxBy=function(a){a=d.createLambda(a);return this.aggregate(function(b,c){return a(b)>a(c)?b:c})};c.prototype.minBy=function(a){a=d.createLambda(a);return this.aggregate(function(b,c){return a(b)<a(c)?b:c})};c.prototype.sum=function(a){if(a==b)a=g.Identity;return this.select(a).aggregate(0,function(a,b){return a+b})};c.prototype.elementAt=function(d){var c,b=a;this.forEach(function(g,f){if(f==d){c=g;b=e;return a}});if(!b)throw new Error(\"index is less than 0 or greater than or equal to the number of elements in source.\");return c};c.prototype.elementAtOrDefault=function(g,c){if(c===j)c=b;var f,d=a;this.forEach(function(c,b){if(b==g){f=c;d=e;return a}});return!d?c:f};c.prototype.first=function(c){if(c!=b)return this.where(c).first();var f,d=a;this.forEach(function(b){f=b;d=e;return a});if(!d)throw new Error(\"first:No element satisfies the condition.\");return f};c.prototype.firstOrDefault=function(d,c){if(c===j)c=b;if(d!=b)return this.where(d).firstOrDefault(b,c);var g,f=a;this.forEach(function(b){g=b;f=e;return a});return!f?c:g};c.prototype.last=function(c){if(c!=b)return this.where(c).last();var f,d=a;this.forEach(function(a){d=e;f=a});if(!d)throw new Error(\"last:No element satisfies the condition.\");return f};c.prototype.lastOrDefault=function(d,c){if(c===j)c=b;if(d!=b)return this.where(d).lastOrDefault(b,c);var g,f=a;this.forEach(function(a){f=e;g=a});return!f?c:g};c.prototype.single=function(d){if(d!=b)return this.where(d).single();var f,c=a;this.forEach(function(a){if(!c){c=e;f=a}else throw new Error(q);});if(!c)throw new Error(\"single:No element satisfies the condition.\");return f};c.prototype.singleOrDefault=function(f,c){if(c===j)c=b;if(f!=b)return this.where(f).singleOrDefault(b,c);var g,d=a;this.forEach(function(a){if(!d){d=e;g=a}else throw new Error(q);});return!d?c:g};c.prototype.skip=function(e){var b=this;return new c(function(){var c,g=0;return new f(function(){c=b.getEnumerator();while(g++<e&&c.moveNext());},function(){return c.moveNext()?this.yieldReturn(c.current()):a},function(){d.dispose(c)})})};c.prototype.skipWhile=function(b){b=d.createLambda(b);var g=this;return new c(function(){var c,i=0,h=a;return new f(function(){c=g.getEnumerator()},function(){while(!h)if(c.moveNext()){if(!b(c.current(),i++)){h=e;return this.yieldReturn(c.current())}continue}else return a;return c.moveNext()?this.yieldReturn(c.current()):a},function(){d.dispose(c)})})};c.prototype.take=function(e){var b=this;return new c(function(){var c,g=0;return new f(function(){c=b.getEnumerator()},function(){return g++<e&&c.moveNext()?this.yieldReturn(c.current()):a},function(){d.dispose(c)})})};c.prototype.takeWhile=function(b){b=d.createLambda(b);var e=this;return new c(function(){var c,g=0;return new f(function(){c=e.getEnumerator()},function(){return c.moveNext()&&b(c.current(),g++)?this.yieldReturn(c.current()):a},function(){d.dispose(c)})})};c.prototype.takeExceptLast=function(e){if(e==b)e=1;var g=this;return new c(function(){if(e<=0)return g.getEnumerator();var b,c=[];return new f(function(){b=g.getEnumerator()},function(){while(b.moveNext()){if(c.length==e){c.push(b.current());return this.yieldReturn(c.shift())}c.push(b.current())}return a},function(){d.dispose(b)})})};c.prototype.takeFromLast=function(e){if(e<=0||e==b)return c.empty();var g=this;return new c(function(){var j,h,i=[];return new f(function(){j=g.getEnumerator()},function(){while(j.moveNext()){i.length==e&&i.shift();i.push(j.current())}if(h==b)h=c.from(i).getEnumerator();return h.moveNext()?this.yieldReturn(h.current()):a},function(){d.dispose(h)})})};c.prototype.indexOf=function(d){var c=b;if(typeof d===i.Function)this.forEach(function(e,b){if(d(e,b)){c=b;return a}});else this.forEach(function(e,b){if(e===d){c=b;return a}});return c!==b?c:-1};c.prototype.lastIndexOf=function(b){var a=-1;if(typeof b===i.Function)this.forEach(function(d,c){if(b(d,c))a=c});else this.forEach(function(d,c){if(d===b)a=c});return a};c.prototype.asEnumerable=function(){return c.from(this)};c.prototype.toArray=function(){var a=[];this.forEach(function(b){a.push(b)});return a};c.prototype.toLookup=function(c,b,a){c=d.createLambda(c);b=d.createLambda(b);a=d.createLambda(a);var e=new r(a);this.forEach(function(g){var f=c(g),a=b(g),d=e.get(f);if(d!==j)d.push(a);else e.add(f,[a])});return new v(e)};c.prototype.toObject=function(b,a){b=d.createLambda(b);a=d.createLambda(a);var c={};this.forEach(function(d){c[b(d)]=a(d)});return c};c.prototype.toDictionary=function(c,b,a){c=d.createLambda(c);b=d.createLambda(b);a=d.createLambda(a);var e=new r(a);this.forEach(function(a){e.add(c(a),b(a))});return e};c.prototype.toJSONString=function(a,c){if(typeof JSON===i.Undefined||JSON.stringify==b)throw new Error(\"toJSONString can't find JSON.stringify. This works native JSON support Browser or include json2.js\");return JSON.stringify(this.toArray(),a,c)};c.prototype.toJoinedString=function(a,c){if(a==b)a=\"\";if(c==b)c=g.Identity;return this.select(c).toArray().join(a)};c.prototype.doAction=function(b){var e=this;b=d.createLambda(b);return new c(function(){var c,g=0;return new f(function(){c=e.getEnumerator()},function(){if(c.moveNext()){b(c.current(),g++);return this.yieldReturn(c.current())}return a},function(){d.dispose(c)})})};c.prototype.forEach=function(c){c=d.createLambda(c);var e=0,b=this.getEnumerator();try{while(b.moveNext())if(c(b.current(),e++)===a)break}finally{d.dispose(b)}};c.prototype.write=function(c,f){if(c==b)c=\"\";f=d.createLambda(f);var g=e;this.forEach(function(b){if(g)g=a;else document.write(c);document.write(f(b))})};c.prototype.writeLine=function(a){a=d.createLambda(a);this.forEach(function(b){document.writeln(a(b)+\"<br />\")})};c.prototype.force=function(){var a=this.getEnumerator();try{while(a.moveNext());}finally{d.dispose(a)}};c.prototype.letBind=function(b){b=d.createLambda(b);var e=this;return new c(function(){var g;return new f(function(){g=c.from(b(e)).getEnumerator()},function(){return g.moveNext()?this.yieldReturn(g.current()):a},function(){d.dispose(g)})})};c.prototype.share=function(){var i=this,c,h=a;return new s(function(){return new f(function(){if(c==b)c=i.getEnumerator()},function(){if(h)throw new Error(l);return c.moveNext()?this.yieldReturn(c.current()):a},g.Blank)},function(){h=e;d.dispose(c)})};c.prototype.memoize=function(){var j=this,h,c,i=a;return new s(function(){var d=-1;return new f(function(){if(c==b){c=j.getEnumerator();h=[]}},function(){if(i)throw new Error(l);d++;return h.length<=d?c.moveNext()?this.yieldReturn(h[d]=c.current()):a:this.yieldReturn(h[d])},g.Blank)},function(){i=e;d.dispose(c);h=b})};c.prototype.catchError=function(b){b=d.createLambda(b);var e=this;return new c(function(){var c;return new f(function(){c=e.getEnumerator()},function(){try{return c.moveNext()?this.yieldReturn(c.current()):a}catch(d){b(d);return a}},function(){d.dispose(c)})})};c.prototype.finallyAction=function(b){b=d.createLambda(b);var e=this;return new c(function(){var c;return new f(function(){c=e.getEnumerator()},function(){return c.moveNext()?this.yieldReturn(c.current()):a},function(){try{d.dispose(c)}finally{b()}})})};c.prototype.log=function(a){a=d.createLambda(a);return this.doAction(function(b){typeof console!==i.Undefined&&console.log(a(b))})};c.prototype.trace=function(c,a){if(c==b)c=\"Trace\";a=d.createLambda(a);return this.doAction(function(b){typeof console!==i.Undefined&&console.log(c,a(b))})};var k=function(f,b,c,e){var a=this;a.source=f;a.keySelector=d.createLambda(b);a.descending=c;a.parent=e};k.prototype=new c;k.prototype.createOrderedEnumerable=function(a,b){return new k(this.source,a,b,this)};k.prototype.thenBy=function(b){return this.createOrderedEnumerable(b,a)};k.prototype.thenByDescending=function(a){return this.createOrderedEnumerable(a,e)};k.prototype.getEnumerator=function(){var h=this,d,c,e=0;return new f(function(){d=[];c=[];h.source.forEach(function(b,a){d.push(b);c.push(a)});var a=p.create(h,b);a.GenerateKeys(d);c.sort(function(b,c){return a.compare(b,c)})},function(){return e<c.length?this.yieldReturn(d[c[e++]]):a},g.Blank)};var p=function(c,d,e){var a=this;a.keySelector=c;a.descending=d;a.child=e;a.keys=b};p.create=function(a,d){var c=new p(a.keySelector,a.descending,d);return a.parent!=b?p.create(a.parent,c):c};p.prototype.GenerateKeys=function(d){var a=this;for(var f=d.length,g=a.keySelector,e=new Array(f),c=0;c<f;c++)e[c]=g(d[c]);a.keys=e;a.child!=b&&a.child.GenerateKeys(d)};p.prototype.compare=function(e,f){var a=this,c=d.compare(a.keys[e],a.keys[f]);return c==0?a.child!=b?a.child.compare(e,f):d.compare(e,f):a.descending?-c:c};var s=function(a,b){this.dispose=b;c.call(this,a)};s.prototype=new c;var h=function(a){this.getSource=function(){return a}};h.prototype=new c;h.prototype.any=function(a){return a==b?this.getSource().length>0:c.prototype.any.apply(this,arguments)};h.prototype.count=function(a){return a==b?this.getSource().length:c.prototype.count.apply(this,arguments)};h.prototype.elementAt=function(a){var b=this.getSource();return 0<=a&&a<b.length?b[a]:c.prototype.elementAt.apply(this,arguments)};h.prototype.elementAtOrDefault=function(c,a){if(a===j)a=b;var d=this.getSource();return 0<=c&&c<d.length?d[c]:a};h.prototype.first=function(d){var a=this.getSource();return d==b&&a.length>0?a[0]:c.prototype.first.apply(this,arguments)};h.prototype.firstOrDefault=function(e,a){if(a===j)a=b;if(e!=b)return c.prototype.firstOrDefault.apply(this,arguments);var d=this.getSource();return d.length>0?d[0]:a};h.prototype.last=function(d){var a=this.getSource();return d==b&&a.length>0?a[a.length-1]:c.prototype.last.apply(this,arguments)};h.prototype.lastOrDefault=function(e,a){if(a===j)a=b;if(e!=b)return c.prototype.lastOrDefault.apply(this,arguments);var d=this.getSource();return d.length>0?d[d.length-1]:a};h.prototype.skip=function(d){var b=this.getSource();return new c(function(){var c;return new f(function(){c=d<0?0:d},function(){return c<b.length?this.yieldReturn(b[c++]):a},g.Blank)})};h.prototype.takeExceptLast=function(a){if(a==b)a=1;return this.take(this.getSource().length-a)};h.prototype.takeFromLast=function(a){return this.skip(this.getSource().length-a)};h.prototype.reverse=function(){var b=this.getSource();return new c(function(){var c;return new f(function(){c=b.length},function(){return c>0?this.yieldReturn(b[--c]):a},g.Blank)})};h.prototype.sequenceEqual=function(d,e){return(d instanceof h||d instanceof Array)&&e==b&&c.from(d).count()!=this.count()?a:c.prototype.sequenceEqual.apply(this,arguments)};h.prototype.toJoinedString=function(a,e){var d=this.getSource();if(e!=b||!(d instanceof Array))return c.prototype.toJoinedString.apply(this,arguments);if(a==b)a=\"\";return d.join(a)};h.prototype.getEnumerator=function(){var a=this.getSource(),b=-1;return{current:function(){return a[b]},moveNext:function(){return++b<a.length},dispose:g.Blank}};var n=function(b,a){this.prevSource=b;this.prevPredicate=a};n.prototype=new c;n.prototype.where=function(a){a=d.createLambda(a);if(a.length<=1){var e=this.prevPredicate,b=function(b){return e(b)&&a(b)};return new n(this.prevSource,b)}else return c.prototype.where.call(this,a)};n.prototype.select=function(a){a=d.createLambda(a);return a.length<=1?new m(this.prevSource,this.prevPredicate,a):c.prototype.select.call(this,a)};n.prototype.getEnumerator=function(){var c=this.prevPredicate,e=this.prevSource,b;return new f(function(){b=e.getEnumerator()},function(){while(b.moveNext())if(c(b.current()))return this.yieldReturn(b.current());return a},function(){d.dispose(b)})};var m=function(c,a,b){this.prevSource=c;this.prevPredicate=a;this.prevSelector=b};m.prototype=new c;m.prototype.where=function(a){a=d.createLambda(a);return a.length<=1?new n(this,a):c.prototype.where.call(this,a)};m.prototype.select=function(a){var b=this;a=d.createLambda(a);if(a.length<=1){var f=b.prevSelector,e=function(b){return a(f(b))};return new m(b.prevSource,b.prevPredicate,e)}else return c.prototype.select.call(b,a)};m.prototype.getEnumerator=function(){var e=this.prevPredicate,g=this.prevSelector,h=this.prevSource,c;return new f(function(){c=h.getEnumerator()},function(){while(c.moveNext())if(e==b||e(c.current()))return this.yieldReturn(g(c.current()));return a},function(){d.dispose(c)})};var r=function(){var d=function(a,b){return Object.prototype.hasOwnProperty.call(a,b)},h=function(a){return a===b?\"null\":a===j?\"undefined\":typeof a.toString===i.Function?a.toString():Object.prototype.toString.call(a)},m=function(d,c){var a=this;a.key=d;a.value=c;a.prev=b;a.next=b},k=function(){this.first=b;this.last=b};k.prototype={addLast:function(c){var a=this;if(a.last!=b){a.last.next=c;c.prev=a.last;a.last=c}else a.first=a.last=c},replace:function(c,a){if(c.prev!=b){c.prev.next=a;a.prev=c.prev}else this.first=a;if(c.next!=b){c.next.prev=a;a.next=c.next}else this.last=a},remove:function(a){if(a.prev!=b)a.prev.next=a.next;else this.first=a.next;if(a.next!=b)a.next.prev=a.prev;else this.last=a.prev}};var l=function(c){var a=this;a.countField=0;a.entryList=new k;a.buckets={};a.compareSelector=c==b?g.Identity:c};l.prototype={add:function(i,j){var a=this,g=a.compareSelector(i),f=h(g),c=new m(i,j);if(d(a.buckets,f)){for(var b=a.buckets[f],e=0;e<b.length;e++)if(a.compareSelector(b[e].key)===g){a.entryList.replace(b[e],c);b[e]=c;return}b.push(c)}else a.buckets[f]=[c];a.countField++;a.entryList.addLast(c)},\"get\":function(i){var a=this,c=a.compareSelector(i),g=h(c);if(!d(a.buckets,g))return j;for(var e=a.buckets[g],b=0;b<e.length;b++){var f=e[b];if(a.compareSelector(f.key)===c)return f.value}return j},\"set\":function(k,l){var b=this,g=b.compareSelector(k),j=h(g);if(d(b.buckets,j))for(var f=b.buckets[j],c=0;c<f.length;c++)if(b.compareSelector(f[c].key)===g){var i=new m(k,l);b.entryList.replace(f[c],i);f[c]=i;return e}return a},contains:function(j){var b=this,f=b.compareSelector(j),i=h(f);if(!d(b.buckets,i))return a;for(var g=b.buckets[i],c=0;c<g.length;c++)if(b.compareSelector(g[c].key)===f)return e;return a},clear:function(){this.countField=0;this.buckets={};this.entryList=new k},remove:function(g){var a=this,f=a.compareSelector(g),e=h(f);if(!d(a.buckets,e))return;for(var b=a.buckets[e],c=0;c<b.length;c++)if(a.compareSelector(b[c].key)===f){a.entryList.remove(b[c]);b.splice(c,1);if(b.length==0)delete a.buckets[e];a.countField--;return}},count:function(){return this.countField},toEnumerable:function(){var d=this;return new c(function(){var c;return new f(function(){c=d.entryList.first},function(){if(c!=b){var d={key:c.key,value:c.value};c=c.next;return this.yieldReturn(d)}return a},g.Blank)})}};return l}(),v=function(a){var b=this;b.count=function(){return a.count()};b.get=function(b){return c.from(a.get(b))};b.contains=function(b){return a.contains(b)};b.toEnumerable=function(){return a.toEnumerable().select(function(a){return new t(a.key,a.value)})}},t=function(b,a){this.key=function(){return b};h.call(this,a)};t.prototype=new h;if(typeof define===i.Function&&define.amd)define(\"linqjs\",[],function(){return c});else if(typeof module!==i.Undefined&&module.exports)module.exports=c;else w.Enumerable=c})(this);var done = true;";
}
}
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