I read the book and your guess was right, it is one of those "Learn X in 21 days" books. I'll ask for a refund. A much better book seems to be Language Impleme

I read the book and your guess was right, it is one of those "Learn X in 21 days" books. I'll ask for a refund. A much better book seems to be Language Implementation Patterns by Terence Parr.