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.
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.
11 use rustc
::infer
::InferCtxt
;
12 use rustc
::traits
::{self, FulfillmentContext
, Normalized
, MiscObligation
, SelectionContext
,
14 use rustc
::ty
::fold
::TypeFoldable
;
18 // FIXME(@jroesch): Ideally we should be able to drop the fulfillment_cx argument.
19 pub fn normalize_associated_types_in
<'a
, 'gcx
, 'tcx
, T
>(
20 infcx
: &InferCtxt
<'a
, 'gcx
, 'tcx
>,
21 fulfillment_cx
: &mut FulfillmentContext
<'tcx
>,
26 where T
: TypeFoldable
<'tcx
>
28 debug
!("normalize_associated_types_in(value={:?})", value
);
29 let mut selcx
= SelectionContext
::new(infcx
);
30 let cause
= ObligationCause
::new(span
, body_id
, MiscObligation
);
31 let Normalized { value: result, obligations }
= traits
::normalize(&mut selcx
, cause
, value
);
32 debug
!("normalize_associated_types_in: result={:?} predicates={:?}",
35 for obligation
in obligations
{
36 fulfillment_cx
.register_predicate_obligation(infcx
, obligation
);