Macro dynparser::or

macro_rules! or {
    ($($e:expr),*) => { ... };
}

Choose expressions (or)

example

#[macro_use]  extern crate dynparser;
use dynparser::parse;

fn main() {
    let rules = rules!{
       "main"   =>  or!(lit!("z"), lit!("a"))
    };

    assert!(parse("a", &rules).is_ok())
}