src/test/run-pass/issue-14959.rs

   1 // Copyright 2014 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 // pretty-expanded FIXME #23616
  12
  13 #![feature(unboxed_closures, core)]
  14
  15 use std::ops::Fn;
  16
  17 trait Response { fn dummy(&self) { } }
  18 trait Request { fn dummy(&self) { } }
  19 trait Ingot<R, S> {
  20     fn enter(&mut self, _: &mut R, _: &mut S, a: &mut Alloy) -> Status;
  21 }
  22
  23 #[allow(dead_code)]
  24 struct HelloWorld;
  25
  26 struct SendFile;
  27 struct Alloy;
  28 enum Status {
  29     Continue
  30 }
  31
  32 impl Alloy {
  33     fn find<T>(&self) -> Option<T> {
  34         None
  35     }
  36 }
  37
  38 impl<'b> Fn<(&'b mut (Response+'b),)> for SendFile {
  39     extern "rust-call" fn call(&self, (_res,): (&'b mut (Response+'b),)) {}
  40 }
  41
  42 impl<'b> FnMut<(&'b mut (Response+'b),)> for SendFile {
  43     extern "rust-call" fn call_mut(&mut self, (_res,): (&'b mut (Response+'b),)) {
  44         self.call((_res,))
  45     }
  46 }
  47
  48 impl<'b> FnOnce<(&'b mut (Response+'b),)> for SendFile {
  49     type Output = ();
  50
  51     extern "rust-call" fn call_once(self, (_res,): (&'b mut (Response+'b),)) {
  52         self.call((_res,))
  53     }
  54 }
  55
  56 impl<Rq: Request, Rs: Response> Ingot<Rq, Rs> for HelloWorld {
  57     fn enter(&mut self, _req: &mut Rq, res: &mut Rs, alloy: &mut Alloy) -> Status {
  58         let send_file = alloy.find::<SendFile>().unwrap();
  59         send_file(res);
  60         Status::Continue
  61     }
  62 }
  63
  64 fn main() {}