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Remove another use of clone_code

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This commit is contained in:
Oli Scherer 2022-05-10 10:32:35 +00:00
parent 063795ce4a
commit dc21fcb2fc
2 changed files with 11 additions and 13 deletions
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2
compiler/rustc_middle/src/traits/mod.rs
View File

@ -183,7 +183,7 @@ impl<'tcx> ObligationCause<'tcx> {
pub fn derived_cause(
mut self,
parent_trait_pred: ty::PolyTraitPredicate<'tcx>,
variant: fn(DerivedObligationCause<'tcx>) -> ObligationCauseCode<'tcx>,
variant: impl FnOnce(DerivedObligationCause<'tcx>) -> ObligationCauseCode<'tcx>,
) -> ObligationCause<'tcx> {
/*!
* Creates a cause for obligations that are derived from

22
compiler/rustc_trait_selection/src/traits/select/mod.rs
View File

@ -14,9 +14,9 @@ use super::util;
use super::util::{closure_trait_ref_and_return_type, predicate_for_trait_def};
use super::wf;
use super::{
DerivedObligationCause, ErrorReporting, ImplDerivedObligation, ImplDerivedObligationCause,
Normalized, Obligation, ObligationCause, ObligationCauseCode, Overflow, PredicateObligation,
Selection, SelectionError, SelectionResult, TraitObligation, TraitQueryMode,
ErrorReporting, ImplDerivedObligation, ImplDerivedObligationCause, Normalized, Obligation,
ObligationCause, ObligationCauseCode, Overflow, PredicateObligation, Selection, SelectionError,
SelectionResult, TraitObligation, TraitQueryMode,
};
use crate::infer::{InferCtxt, InferOk, TypeFreshener};
@ -2316,17 +2316,15 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
debug!(?predicates);
assert_eq!(predicates.parent, None);
let mut obligations = Vec::with_capacity(predicates.predicates.len());
let parent_code = cause.clone_code();
for (predicate, span) in predicates.predicates {
let span = *span;
let derived =
DerivedObligationCause { parent_trait_pred, parent_code: parent_code.clone() };
let code = ImplDerivedObligation(Box::new(ImplDerivedObligationCause {
derived,
impl_def_id: def_id,
span,
}));
let cause = ObligationCause::new(cause.span, cause.body_id, code);
let cause = cause.clone().derived_cause(parent_trait_pred, |derived| {
ImplDerivedObligation(Box::new(ImplDerivedObligationCause {
derived,
impl_def_id: def_id,
span,
}))
});
let predicate = normalize_with_depth_to(
self,
param_env,