| // 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. |
| |
| // pretty-expanded FIXME #23616 |
| |
| use std::ops::Deref; |
| |
| struct Root { |
| jsref: JSRef |
| } |
| |
| impl Deref for Root { |
| type Target = JSRef; |
| |
| fn deref<'a>(&'a self) -> &'a JSRef { |
| &self.jsref |
| } |
| } |
| |
| #[derive(Copy, Clone)] |
| struct JSRef { |
| node: *const Node |
| } |
| |
| impl Deref for JSRef { |
| type Target = Node; |
| |
| fn deref<'a>(&'a self) -> &'a Node { |
| self.get() |
| } |
| } |
| |
| trait INode { |
| fn RemoveChild(&self); |
| } |
| |
| impl INode for JSRef { |
| fn RemoveChild(&self) { |
| self.get().RemoveChild(0) |
| } |
| } |
| |
| impl JSRef { |
| fn AddChild(&self) { |
| self.get().AddChild(0); |
| } |
| |
| fn get<'a>(&'a self) -> &'a Node { |
| unsafe { |
| &*self.node |
| } |
| } |
| } |
| |
| struct Node; |
| |
| impl Node { |
| fn RemoveChild(&self, _a: usize) { |
| } |
| |
| fn AddChild(&self, _a: usize) { |
| } |
| } |
| |
| fn main() { |
| let n = Node; |
| let jsref = JSRef { node: &n }; |
| let root = Root { jsref: jsref }; |
| |
| root.AddChild(); |
| jsref.AddChild(); |
| |
| root.RemoveChild(); |
| jsref.RemoveChild(); |
| } |