[rustc.git] / src / test / ui / macros / macro-seq-followed-by-seq.rs

// run-pass
// Test of allowing two sequences repetitions in a row,
// functionality added as byproduct of RFC amendment #1384
//   https://github.com/rust-lang/rfcs/pull/1384

// Old version of Rust would reject this macro definition, even though
// there are no local ambiguities (the initial `banana` and `orange`
// tokens are enough for the expander to distinguish which case is
// intended).
macro_rules! foo {
    ( $(banana $a:ident)* $(orange $b:tt)* ) => { };
}

fn main() {
    foo!( banana id1 banana id2
          orange hi  orange (hello world) );
}
Commit	Line	Data
b7449926	1	// run-pass
9cc50fc6 SL	2	// Test of allowing two sequences repetitions in a row,
	3	// functionality added as byproduct of RFC amendment #1384
	4	// https://github.com/rust-lang/rfcs/pull/1384
	5
	6	// Old version of Rust would reject this macro definition, even though
	7	// there are no local ambiguities (the initial `banana` and `orange`
	8	// tokens are enough for the expander to distinguish which case is
	9	// intended).
	10	macro_rules! foo {
	11	( $(banana $a:ident)* $(orange $b:tt)* ) => { };
	12	}
	13
	14	fn main() {
	15	foo!( banana id1 banana id2
	16	orange hi orange (hello world) );
	17	}