| // Copyright 2015 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 Paramters { type SelfRef; } |
| |
| struct RP<'a> { _marker: std::marker::PhantomData<&'a ()> } |
| struct BP; |
| |
| impl<'a> Paramters for RP<'a> { type SelfRef = &'a X<RP<'a>>; } |
| impl Paramters for BP { type SelfRef = Box<X<BP>>; } |
| |
| pub struct Y; |
| pub enum X<P: Paramters> { |
| Nothing, |
| SameAgain(P::SelfRef, Y) |
| } |
| |
| fn main() { |
| let bnil: Box<X<BP>> = Box::new(X::Nothing); |
| let bx: Box<X<BP>> = Box::new(X::SameAgain(bnil, Y)); |
| let rnil: X<RP> = X::Nothing; |
| let rx: X<RP> = X::SameAgain(&rnil, Y); |
| } |
