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 middle::infer::InferCtxt;
12 use middle::traits::{mod, FulfillmentContext, Normalized, MiscObligation,
13 SelectionContext, ObligationCause};
14 use middle::ty::{mod, HasProjectionTypes};
15 use middle::ty_fold::{TypeFoldable, TypeFolder};
17 use syntax::codemap::Span;
18 use util::ppaux::Repr;
20 pub fn normalize_associated_types_in<'a,'tcx,T>(infcx: &InferCtxt<'a,'tcx>,
21 typer: &(ty::UnboxedClosureTyper<'tcx>+'a),
22 fulfillment_cx: &mut FulfillmentContext<'tcx>,
27 where T : TypeFoldable<'tcx> + HasProjectionTypes + Clone + Repr<'tcx>
29 debug!("normalize_associated_types_in(value={})", value.repr(infcx.tcx));
30 let mut selcx = SelectionContext::new(infcx, typer);
31 let cause = ObligationCause::new(span, body_id, MiscObligation);
32 let Normalized { value: result, obligations } = traits::normalize(&mut selcx, cause, value);
33 debug!("normalize_associated_types_in: result={} predicates={}",
34 result.repr(infcx.tcx),
35 obligations.repr(infcx.tcx));
36 for obligation in obligations.into_iter() {
37 fulfillment_cx.register_predicate_obligation(infcx, obligation);