Enums with Unit variants #37

I tried to have an Enum that has variants that have no content. (in your terminology Unit)

#[derive(FromPest, Debug, Clone)]
#[pest_ast(rule(Rule::Formula))]
pub enum Formula {
    True,
    False,
}

I looked at the existing code and did not understand how it should work.

I have a commit that solves the issue for me.

c964345

Are you interested in a PR?