I tried doing something similar to this once. I ran into an issue where I couldn’t define symbols with a dash in them (DEFINE MY-FN…). This is because rust will split the tokens on a dash. It was a small thing, but it meant I couldn’t just copy and paste snippets from a real lisp, I had to transform everything to underscore. Is it the same in your implementation?
gleenn
I wish there was a well-supported Lisp in Rust, not just the macros. I wonder how much memory safety you would retain or lose being based in Rust. Is it even possible to leverage the borrow checker any any sane way?
p4bl0
That was fun. Thanks for sharing!
krick
Everyone is supposed to be cheering for how "fun" it is, but every time I see anything like that I cannot help but think, that I hate the fact it can be implemented in Rust. It never truly was a simple language, but I think it started as something way more manageable than what it has become.
brundolf
Wow and it uses macro_rules
meindnoch
But C++ is not a sane language because templates are Turing-complete, right?
djha-skin
Obligatory reference to Carp[1], the lisp that uses borrow checking; the "rust" of lisps.