Click here to Skip to main content
12,549,003 members (48,688 online)
Click here to Skip to main content


244 bookmarked

Implementing Programming Languages Using C# 4.0

, 12 Jul 2012 MIT
An introduction to creating programming language tools using C# 4.0.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Dynamic;
using System.Xml.Linq;
using System.Linq.Expressions;

namespace Diggins.Jigsaw
    public delegate dynamic DynamicFunction(params dynamic[] args);
    public delegate dynamic DynamicFunc0();
    public delegate dynamic DynamicFunc1(dynamic a0);
    public delegate dynamic DynamicFunc2(dynamic a0, dynamic a1);
    public delegate dynamic DynamicFunc3(dynamic a0, dynamic a1, dynamic a2);
    public delegate dynamic DynamicMethod(dynamic self, params dynamic[] args);

    public static class Extensions
        public static char LastChar(this string self)
            return self[self.Length - 1];
        public static string StripQuotes(this string self)
            if (self.Length > 1 && ((self[0] == '"' && self.LastChar() == '"') || (self[0] == '\'' && self.LastChar() == '\'')))
                return self.Substring(1, self.Length - 2);
                return self;

        public static ExpandoObject AddField(this ExpandoObject self, string name, dynamic value)
            var d = self as IDictionary<string, object>;
            d[name] = value;
            return self;

        public static ExpandoObject AddMethod(this ExpandoObject self, string name, DynamicMethod m)
            DynamicFunction f = (args) => m(self, args);
            return AddField(self, name, f);

        public static IDictionary<string, object> AsDictionary(this ExpandoObject self) 
            return (IDictionary<string, object>)self; 
        public static ICollection<KeyValuePair<string, object>> AsCollection(this ExpandoObject self)
            return (ICollection<KeyValuePair<string, object>>)self; 

By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.

If a file you wish to view isn't highlighted, and is a text file (not binary), please let us know and we'll add colourisation support for it.


This article, along with any associated source code and files, is licensed under The MIT License


About the Author

Christopher Diggins
Software Developer Autodesk
Canada Canada
This article was written by Christopher Diggins, a computer science nerd who currently works at Autodesk as an SDK specialist.

You may also be interested in...

| Advertise | Privacy | Terms of Use | Mobile
Web01 | 2.8.161021.1 | Last Updated 12 Jul 2012
Article Copyright 2011 by Christopher Diggins
Everything else Copyright © CodeProject, 1999-2016
Layout: fixed | fluid