Implementing a DSL on .NET

Question

I'm implementing a small DSL on top of .NET (4.0) and I'm currently using Expression Trees to turn the DSL into chunks of executable code.

The DSL is predefined as we're implementing support for a legacy file format.

Are Expression Trees the most appropriate tool for this job?

Answer 1

Expression Trees are useless if you want to generate new types. And for most of the typical DSLs you have to build types. So, a good old System.Reflection.Emit is likely to be a better choice.