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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;

namespace Diggins.Jigsaw
    public class VarBindings
        public string Name;
        public object Value;
        public VarBindings Tail;
        public VarBindings AddBinding(string name, object value)
            return new VarBindings { Name = name, Value = value, Tail = this };
        public IEnumerable<VarBindings> Bindings
                for (var b = this; b != null; b = b.Tail)
                    yield return b;

        public VarBindings FindBindingOrDefault(string name)
            return Bindings.FirstOrDefault(c => c.Name == name);

        public VarBindings FindBinding(string name)
            var r = FindBindingOrDefault(name);
            if (r == null) throw new Exception("Name does not exist in context: " + name);
            return r; 
        public object Find(string name)
            return FindBinding(name).Value;
        public object this[string name]
            get { return Find(name); }

        public dynamic Bind(string name, dynamic value)
            return FindBinding(name).Value = value;

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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.

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