I was going to say: I bet this is written in Rust, they use https://docs.rs/syn/latest/syn/ https://docs.rs/syn/latest/syn/ to not write their own parser/lexer,

I was going to say: I bet this is written in Rust, they use https://docs.rs/syn/latest/syn/ https://docs.rs/syn/latest/syn/ to not write their own parser/lexer, and this is how you get Rust-looking languages... I'm surprised.