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1 | // Copyright 2015 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. | |
4 | // | |
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. | |
10 | ||
11 | #![feature(reflect_marker)] | |
12 | ||
13 | use std::any::TypeId; | |
14 | use std::marker::Reflect; | |
15 | use std::rc::Rc; | |
16 | ||
17 | type Fp<T> = Rc<T>; | |
18 | ||
19 | struct Engine; | |
20 | ||
21 | trait Component: 'static + Reflect {} | |
22 | impl Component for Engine {} | |
23 | ||
24 | trait Env { | |
25 | fn get_component_type_id(&self, type_id: TypeId) -> Option<Fp<Component>>; | |
26 | } | |
27 | ||
28 | impl<'a> Env+'a { | |
29 | fn get_component<T: Component>(&self) -> Option<Fp<T>> { | |
30 | let x = self.get_component_type_id(TypeId::of::<T>()); | |
31 | None | |
32 | } | |
33 | } | |
34 | ||
35 | trait Figment { | |
36 | fn init(&mut self, env: &Env); | |
37 | } | |
38 | ||
39 | struct MyFigment; | |
40 | ||
41 | impl Figment for MyFigment { | |
42 | fn init(&mut self, env: &Env) { | |
43 | let engine = env.get_component::<Engine>(); | |
44 | } | |
45 | } | |
46 | ||
47 | fn main() {} |