// run-pass // Regression test for issue #25436: permit token-trees to be followed // by sequences, enabling more general parsing. use self::Join::*; #[derive(Debug)] #[allow(unused_tuple_struct_fields)] enum Join<A,B> { Keep(A,B), Skip(A,B), } macro_rules! parse_list { ( < $a:expr; > $($b:tt)* ) => { Keep(parse_item!($a),parse_list!($($b)*)) }; ( $a:tt $($b:tt)* ) => { Skip(parse_item!($a), parse_list!($($b)*)) }; ( ) => { () }; } macro_rules! parse_item { ( $x:expr ) => { $x } } fn main() { let list = parse_list!(<1;> 2 <3;> 4); assert_eq!("Keep(1, Skip(2, Keep(3, Skip(4, ()))))", format!("{:?}", list)); }