jimmy hacking (at) Microsoft

jimmy hacking (at) microsoft wpi | flaud | 2008-11-24 open source programming languages

I'm back!

Jimmy Schementi http://blog.jimmy.schementi.com

2002-2007

Jimmy, show Logo Demo!

.testing

Terminology Java Language  C# Java Platform  .NET Platform (CLR) Flash + Java applets + JavaFX  Silverlight

IronPython 1.0

September 2006

Python 2.4 Compatible

CLR great for dynamic languages But requires a lot of work

DLR Dynamic Language Runtime

Compiler Infrastructure

compiler front-end return Syntax Tree Return def add2(a) { return 2 + a; } Scan 2 + a ; Parse Token stream Add Named(a) Const(2)

compiler back-end on CLR Syntax Tree Return Add Named(a) Const(2) Generate IL ldc.i4.2 // load 2 box [mscorlib]System.Int32 ldarg.0 // load “a” call object LangHelpers::Add(object, object) ret IL public static object Add (object x, object y) { ... } Runtime Library

compiler back-end on DLR Syntax Tree Return Add Named(a) Const(2) Generate DLR Tree DLR Tree Return MethodCall LangHelpers.Add BoundExpression ConstantExpression 2 ConvertTo Object Variable a: Object

two ways to call
def yo (name):
"hello " + name
print yo("jimmy")
MethodCallExpression Method : {RuntimeMethodInfo {Name: "Print"}} Arguments : [0] ActionExpression ActionExpression yo("jimmy") Action : CallAction Arguments : [0] {BoundExpression {Variable: Local{yo}}} [1] {ConstantExpression {"jimmy"}}

public static object Handle (
object[] args, DynamicSite<object, object, object> site1,
object obj1, object obj2)
{
if (obj1 != null && obj1.GetType() == typeof(string) &&
obj2 != null && obj2.GetType() == typeof(string))
{
return StringOps.Add(Converter.ConvertToString(obj1),
Converter.ConvertToString(obj2));
}
return site1.UpdateBindingAndInvoke(obj1, obj2);
}

public static object Handle (
object[] args, DynamicSite<object, object, object> site1,
object obj1, object obj2)
{
if (obj1 != null && obj1.GetType() == typeof(int) &&
obj2 != null && obj2.GetType() == typeof(int))
{
return Int32Ops.Add(Converter.ConvertToInt(obj1),
Converter.ConvertToInt(obj2));
}
if (obj1 != null && obj1.GetType() == typeof(string) &&
obj2 != null && obj2.GetType() == typeof(string))
{
return StringOps.Add(Converter.ConvertToString(obj1),
Converter.ConvertToString(obj2));
}
return site1.UpdateBindingAndInvoke(obj1, obj2);
}

Hosting "eval" of any language, in any language

Auto Completion Static Language: Easy

Auto Completion Dynamic Language: Holy Crap class Foo def bar end end Foo .class_eval do def baz end end f = Foo.new class << f def bang end end f. WTF?

Lisp Read Eval Print

r ead e val p rint l oop

Jimmy, show Ruby Demo!

Jimmy, show DLRConsole Demo!

Jimmy, show console=true Demo!

Jimmy, show embedding Demo!

rails + silverlight demo

http://www.flickr.com/photos/marchange/444184871/

http://silverlight.net
http://codeplex.com/sdlsdk
http://github.com/jschementi/agdlr
http://codeplex.com/ironpython
http://ironruby.net
http://codeplex.com/dlr

Recap Silverlight lets you do crazy things with Ruby/Python REPLs are awesome Ruby is crazy DLR: Write a language without the compiler Open source rocks

http://peaceplusone.com/img/hippie.jpg

jimmy hacking (at) Microsoft

by Jimmy Schementi on Dec 03, 2008

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