Definitely take a look at Forth: each word in the language can have separate compile-time and run-time behavior, and the compiler is simple enough that it's eas

Definitely take a look at Forth: each word in the language can have separate compile-time and run-time behavior, and the compiler is simple enough that it's easy to extend it with your own compile-time words. https://www.forth.com/starting-forth/11-forth-compiler-defining-words/ https://www.forth.com/starting-forth/11-forth-compiler-defin... is a good overview.