| // 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. |
| |
| // compile-pass |
| #![allow(dead_code)] |
| use std::marker::PhantomData; |
| |
| pub struct UnionedKeys<'a,K> |
| where K: UnifyKey + 'a |
| { |
| table: &'a mut UnificationTable<K>, |
| root_key: K, |
| stack: Vec<K>, |
| } |
| |
| pub trait UnifyKey { |
| type Value; |
| } |
| |
| pub struct UnificationTable<K:UnifyKey> { |
| values: Delegate<K>, |
| } |
| |
| pub struct Delegate<K>(PhantomData<K>); |
| |
| fn main() {} |
