| // build-pass |
| #![allow(dead_code)] |
| #![allow(unused_variables)] |
| use std::any::TypeId; |
| use std::rc::Rc; |
| |
| type Fp<T> = Rc<T>; |
| |
| struct Engine; |
| |
| trait Component: 'static {} |
| impl Component for Engine {} |
| |
| trait Env { |
| fn get_component_type_id(&self, type_id: TypeId) -> Option<Fp<dyn Component>>; |
| } |
| |
| impl<'a> dyn Env + 'a { |
| fn get_component<T: Component>(&self) -> Option<Fp<T>> { |
| let x = self.get_component_type_id(TypeId::of::<T>()); |
| None |
| } |
| } |
| |
| trait Figment { |
| fn init(&mut self, env: &dyn Env); |
| } |
| |
| struct MyFigment; |
| |
| impl Figment for MyFigment { |
| fn init(&mut self, env: &dyn Env) { |
| let engine = env.get_component::<Engine>(); |
| } |
| } |
| |
| fn main() {} |
