dynamic-language-runtime

I am doing some experiments with IronPython 2.6.1 and the clr.CompileModules function to compile my large scripts into assemblies. Testing has shown good cold start performance performance improvements but in some cases importing the compiled module is actually slower than executing a large string that represents my code in some cases. My question is, if i use something like scope.Engine.Execute(string.Format("from {0} import {0}", theModule), scope); or the ImportModule function, even though I get a new ScriptSCope back does the DLR cache the imports made in other ScriptScopes? So if module 1

When I load modules from standard library as source .py files in this application, elapsed time after end equals approximately 4 seconds: Stopwatch watch = Stopwatch.StartNew(); ScriptEngine engine = Python.CreateEngine(); ScriptScope scope = engine.CreateScope(); ICollection<string> paths = engine.GetSearchPaths(); paths.Add(@"C:\Users\Montgomery1944\Documents\Libs\IronPython-2.7.1\Lib"); engine.SetSearchPaths(paths); ScriptSource source = engine.CreateScriptSourceFromString( @"from distutils import dir_util import ftplib import os import tempfile import zipfile"); source.Execute(scope);

I have just started writing my first language for the .NET DLR. I would like to know if it is possible to extend Visual Studio 2008 IntelliSense to handle the syntax of a custom DLR language? EDIT: I have decided to bypass VS2008 and target VS2010 instead. See accepted answer for more information. Visual Studio's primary extensibility method for supporting new languages is through Language Services in a VSPackage . Visual Studio 2010 has radically improved the ability to support a new language, but if target your extension to it you will not be able to use it in older versions. If you write a

This question is kind of lengthy but I try to provide you with the details that I think is necessary to find the answer. I have a C# WPF solution (.Net 4) consisting of a main project, building a WPF windows app, which depends on a few class library projects residing in the same Visual Studio 2010 solution. One of the class library projects encapsulates some previously developed python code that I want to make use of through IronPython and Microsoft Dynamic Language Runtime. I would like the class library project to be self contained and not depend on a complete installation of IronPython. The

I want to execute a javascript code from c# using DLR. So I wrote a simple code using c# and Jint : var script = @" function show( ) { return parseInt('123asd'); //in js it's 123 }; return show();"; var result = new JintEngine().Run(script); Console.WriteLine(result); parseInt('123asd') in javascript is : 123 But the result I get is : Maybe I don't see the whole picture, but if a programmer on the other side of the world sends me his script file, I (and him) expect the result to be consistent! If I was mistaken, in what scenario would I use running other code on .Net? (I will have to be very

I am implementing a language interpreter in C# using the DLR, and I'm having some troubles with the ternary operator. At this point, I have basic function declarations/calls implemented, like so: F := (x) -> x + 1 F(1) # returns 2 I've not had a problem with a function body being a sequence of expressions -- the value of the last expression is always returned, and I've made sure all cases in the interpreter return at least something as a side effect. I'm now trying to implement the ternary operator (? :). The Expression tree I'm rendering looks like this: work = Expression.IfThenElse(

I have a subclass of DynamicObject and I would like to implement implicit casting for primitive types similarly as DO's explicit casting method TryConvert; that is, without writing multiple implicit operator [type] functions. Usage: dynamic myDynamicObject = new MyDynamicObject("1"); int sum = 1 + myDynamicObject; // instead of int i = 1 + (int)myDynamicObject; Is that possible and if so, how? There are several things going on here. First, you are performing a binary operation. So, you need to override TryBinaryOperation method as well. It will be called first, before conversion. Then from the

Nancy passes my query-string and form values to my handlers via a dynamic variable. The example below shows form values being passed in to a POST handler via the Nancy request e.g. Request.Form.xxx . Handler Post["/"] = _ => { var userId = (string) Request.Form.userid; if (userId.IsEmpty()) return HttpStatusCode.UnprocessableEntity; return HttpStatusCode.OK; }; You can see that I am casting the userid to a string and then using a string extension method to check if the value is null or empty string (equivalent to string.IsNullOrEmpty() ). What I would prefer is to to have the extension method