Even writing a lexer in rust seems weird and too hard.
The typical lexer scheme does not seem to exist in any
crate used by some qualified amount of people, instead
we have `nom`, which is a "parser combinator", meaning
we write a lot of functions instead of grammar that
a parser/scanner will be generated from.
This just confuses me a lot to be honest, I'd just want
lex and yacc in rust, coming from a university course
with ply and antlr4.
Christoph J. Scherr