DLR Language Design Example

Can someone point me to an example of building a simple hosted language using the DLR? My开发者_JS百科 needs are modest, basically I just want to be able to evaluate simple case-insensitive expressions.

The CodePlex DLR site includes a walk through of a simple LISP like language called Sympl:

http://dlr.codeplex.com/wikipage?title=Docs%20and%20specs&referringTitle=Home

There are implementations in both C# and IronPython.

• DLR - Build Your Own Language (without tears) by Dermot Hogan
• Getting started with the DLR: ToyScript by John Lam