// 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

#![feature(unboxed_closures, core)]

use std::ops::Fn;

trait Response { fn dummy(&self) { } }
trait Request { fn dummy(&self) { } }
trait Ingot<R, S> {
    fn enter(&mut self, _: &mut R, _: &mut S, a: &mut Alloy) -> Status;
}

#[allow(dead_code)]
struct HelloWorld;

struct SendFile;
struct Alloy;
enum Status {
    Continue
}

impl Alloy {
    fn find<T>(&self) -> Option<T> {
        None
    }
}

impl<'b> Fn<(&'b mut (Response+'b),)> for SendFile {
    extern "rust-call" fn call(&self, (_res,): (&'b mut (Response+'b),)) {}
}

impl<'b> FnMut<(&'b mut (Response+'b),)> for SendFile {
    extern "rust-call" fn call_mut(&mut self, (_res,): (&'b mut (Response+'b),)) {
        self.call((_res,))
    }
}

impl<'b> FnOnce<(&'b mut (Response+'b),)> for SendFile {
    type Output = ();

    extern "rust-call" fn call_once(self, (_res,): (&'b mut (Response+'b),)) {
        self.call((_res,))
    }
}

impl<Rq: Request, Rs: Response> Ingot<Rq, Rs> for HelloWorld {
    fn enter(&mut self, _req: &mut Rq, res: &mut Rs, alloy: &mut Alloy) -> Status {
        let send_file = alloy.find::<SendFile>().unwrap();
        send_file(res);
        Status::Continue
    }
}

fn main() {}