| // 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. |
| |
| pub trait Reader {} |
| |
| enum Wrapper<'a> { |
| WrapReader(&'a (Reader + 'a)) |
| } |
| |
| trait Wrap<'a> { |
| fn wrap(self) -> Wrapper<'a>; |
| } |
| |
| impl<'a, R: Reader> Wrap<'a> for &'a mut R { |
| fn wrap(self) -> Wrapper<'a> { |
| Wrapper::WrapReader(self as &'a mut Reader) |
| } |
| } |
| |
| pub fn main() {} |
