diff options
Diffstat (limited to '')
| -rw-r--r-- | compiler/rustc_trait_selection/src/traits/util.rs | 25 |
1 files changed, 1 insertions, 24 deletions
diff --git a/compiler/rustc_trait_selection/src/traits/util.rs b/compiler/rustc_trait_selection/src/traits/util.rs index d25006016..0f5dff01c 100644 --- a/compiler/rustc_trait_selection/src/traits/util.rs +++ b/compiler/rustc_trait_selection/src/traits/util.rs @@ -11,8 +11,6 @@ use rustc_middle::ty::{self, ImplSubject, ToPredicate, Ty, TyCtxt, TypeVisitable use super::{Normalized, Obligation, ObligationCause, PredicateObligation, SelectionContext}; pub use rustc_infer::traits::{self, util::*}; -use std::iter; - /////////////////////////////////////////////////////////////////////////// // `TraitAliasExpander` iterator /////////////////////////////////////////////////////////////////////////// @@ -210,7 +208,7 @@ pub fn impl_subject_and_oblig<'a, 'tcx>( let Normalized { value: predicates, obligations: normalization_obligations2 } = super::normalize(selcx, param_env, ObligationCause::dummy(), predicates); let impl_obligations = - predicates_for_generics(ObligationCause::dummy(), 0, param_env, predicates); + super::predicates_for_generics(|_, _| ObligationCause::dummy(), param_env, predicates); let impl_obligations = impl_obligations .chain(normalization_obligations1.into_iter()) @@ -219,27 +217,6 @@ pub fn impl_subject_and_oblig<'a, 'tcx>( (subject, impl_obligations) } -pub fn predicates_for_generics<'tcx>( - cause: ObligationCause<'tcx>, - recursion_depth: usize, - param_env: ty::ParamEnv<'tcx>, - generic_bounds: ty::InstantiatedPredicates<'tcx>, -) -> impl Iterator<Item = PredicateObligation<'tcx>> { - debug!("predicates_for_generics(generic_bounds={:?})", generic_bounds); - - iter::zip(generic_bounds.predicates, generic_bounds.spans).map(move |(predicate, span)| { - let cause = match *cause.code() { - traits::ItemObligation(def_id) if !span.is_dummy() => traits::ObligationCause::new( - cause.span, - cause.body_id, - traits::BindingObligation(def_id, span), - ), - _ => cause.clone(), - }; - Obligation { cause, recursion_depth, param_env, predicate } - }) -} - pub fn predicate_for_trait_ref<'tcx>( tcx: TyCtxt<'tcx>, cause: ObligationCause<'tcx>, |