Macro tree_automata::automaton_items

macro_rules! automaton_items {
    ( $aut:ident $f:tt ( $( $sub:expr ),* ) -> $q:tt, $( $token:tt )* ) => { ... };
    ( $aut:ident $f:tt -> $q:tt, $( $token:tt )* ) => { ... };
    ( $aut:ident finals $($q:tt)* ) => { ... };
}