| // Copyright 2014 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. |
| |
| |
| enum T { |
| A(isize), |
| B(f64) |
| } |
| |
| // after fixing #9384 and implementing hygiene for match bindings, |
| // this now fails because the insertion of the 'y' into the match |
| // doesn't cause capture. Making this macro hygienic (as I've done) |
| // could very well make this test case completely pointless.... |
| |
| macro_rules! test { |
| ($id1:ident, $id2:ident, $e:expr) => ( |
| fn foo(a:T, b:T) -> T { |
| match (a, b) { |
| (T::A($id1), T::A($id2)) => T::A($e), |
| (T::B($id1), T::B($id2)) => T::B($e), |
| _ => panic!() |
| } |
| } |
| ) |
| } |
| |
| test!(x,y,x + y); |
| |
| pub fn main() { |
| foo(T::A(1), T::A(2)); |
| } |
