34 lines
765 B
Rust
34 lines
765 B
Rust
|
// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
|
||
|
|
// file at the top-level directory of this distribution and at
|
||
|
|
// http://rust-lang.org/COPYRIGHT.
|
||
|
|
//
|
||
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
||
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
||
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
||
|
|
// option. This file may not be copied, modified, or distributed
|
||
|
|
// except according to those terms.
|
||
|
|
|
||
|
|
#[feature(macro_rules)];
|
||
|
|
|
||
|
|
enum T {
|
||
|
|
A(int),
|
||
|
|
B(uint)
|
||
|
|
}
|
||
|
|
|
||
|
|
macro_rules! test(
|
||
|
|
($e:expr) => (
|
||
|
|
fn foo(t: T) -> int {
|
||
|
|
match t {
|
||
|
|
A(y) => $e,
|
||
|
|
B(y) => $e
|
||
|
|
}
|
||
|
|
}
|
||
|
|
)
|
||
|
|
)
|
||
|
|
|
||
|
|
test!(10 + (y as int))
|
||
|
|
|
||
|
|
pub fn main() {
|
||
|
|
foo(A(20));
|
||
|
|
}
|