I don't have an answer other than the one you already have...parsing, grammars, etc. because any tool that did code generation would be 'papering over' all those features. However, there are tools, i.e. programming languages, that make parsing and grammars etc. easier...being a bit of a Lispweenie code generation suggests macros to me...but setting that aside, there are tools for writing Domain Specific Languages for example JetBrains MPS https://www.jetbrains.com/mps/ see SE-Radio #200: http://www.se-radio.net/2014/01/episode-200-markus-volter-on...