• Third Printing

• Second Printing

• First Printing

Complete with index and copyedits, on its way to being typeset and printed.

This is the final draft–September 25, 2009

• Finished responding to reviewers comments.
• I did my own pass over the entire text and added acknowledgments.
• Broke up the book into different parts to organize the chapters.
• Replaced the source level interpreter with a much simpler SQL subset on top of some hash tables.
• Fixed the errata listed for beta 6.x.

First draft complete. Added “Putting it all together” chapter. I go through a number of examples and leave the implementation to you. I reference suitable patterns from the book and give you the basic strategy. Fixed the errata listed for beta 5.x.

• Chapter 12, Generating DSLs. Added a chapter on generating DSLs with StringTemplate. It gives a good introduction to ST and shows by example how to build templatedriven output models.

• Chapter 11, Translating Computer Languages

• Chapter 10, Building Bytecode Interpreters

There was a production problem with B2.0 such that the pattern headlines did not appear. That has been corrected in 2.1.

• Chapter 9, Interpreting Programming Languages