1 // Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 // This is a regression test for something that only came up while
12 // attempting to bootstrap libsyntax; it is adapted from
13 // `syntax::ext::tt::generic_extension`.
20 pub fn m(&self) -> &'b u8 { self.f }
29 impl<'d> M for P<'d> {
30 fn n(&self) -> u8 { *self.g }
33 fn extension<'e>(x: &'e E<'e>) -> Box<M+'e> {
35 let p = P { g: x.m() };
36 return Box::new(p) as Box<M+'e>;
42 let o = extension(&w);
43 assert_eq!(o.n(), 10);