I was working on something similar to this a while ago, but the goal of it was experimenting with what a language that could modify it's own syntax would look l

I was working on something similar to this a while ago, but the goal of it was experimenting with what a language that could modify it's own syntax would look like. I was going to write something as basic as possible and then have example scripts on transforming the syntax to other languages. I was probably just going to do brainfuck and c in the end, but I wanted something like that to be possible. I couldn't figure out how to make a language modify a tree structure for tweaking the ast of the interpreter, but I guess lisp fits the bill there.