Chapter 12. Integrating It All

In this final chapter, we will build a fully functioning DSL and integrate it into a web application. In doing so, we will cover the issues you will encounter when integrating your own DSLs into existing applications. The DSL we will look at is a proof of concept DSL that implements a simple state machine style game engine with server-side engine logic, which supports a HTML user interface.

• The DSL was written to support teaching Groovy, so we will start by looking at how we can use DSL techniques to help with teaching programming to kids
• We will see how those ideas evolved into the proof of concept game engine DSL we will build in this chapter
• We will look at how we can structure the game engine as a pattern of Groovy classes and then see how we can implement an AST transform to generate that pattern
• We will see how we can integrate the DSL into a spring boot game server with a MongoDB session store
• Finally, we will build a simple mobile UI for the game...