One cool pattern for tokens is a T! macro: macro_rules! T { (+) => { Token::Add }, (-) => { Token::Sub }, // ... } This is reall

One cool pattern for tokens is a T! macro: macro_rules! T { (+) => { Token::Add }, (-) => { Token::Sub }, // ... } This is really nice because it lets you match against tokens with `T![+]` instead of `Token::Add`.