1 // Copyright 2017 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.
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.
13 pub trait Plugin<E: ?Sized> {
18 fn get_ref<P: Plugin<Self>>(&mut self) -> Option<P::Error> {
24 impl Plugin<Foo> for Params {
28 impl<T: Copy> Pluggable for T {}
30 fn handle(req: &mut i32) {
31 req.get_ref::<Params>();
32 //~^ ERROR the trait bound `Params: Plugin<i32>` is not satisfied