That's what I did. I made a Scheme instead of Lox because I'm not that interested in parsers; s-expression recursive descent parsers are almost trivial to implement. And I wanted to try implementing macros, which are so much simpler in a Lisp.

I loosely followed the second half of book - but I found that for a Scheme or Lisp, it made more sense to have separate parsing and compilation steps. Because implementing quotation is trivial if you parse first, but would have been kind of messy to do in a single pass.

(I also used Rust instead of C, which means I skipped a lot of the memory management code, at the cost of more indirection in some places.)