diff options
Diffstat (limited to 'compiler/rustc_trait_selection/src/solve')
7 files changed, 32 insertions, 54 deletions
diff --git a/compiler/rustc_trait_selection/src/solve/alias_relate.rs b/compiler/rustc_trait_selection/src/solve/alias_relate.rs index e079809aecc..65cc0a45857 100644 --- a/compiler/rustc_trait_selection/src/solve/alias_relate.rs +++ b/compiler/rustc_trait_selection/src/solve/alias_relate.rs @@ -29,7 +29,7 @@ impl<'tcx> EvalCtxt<'_, 'tcx> { let Goal { param_env, predicate: (lhs, rhs, direction) } = goal; // Structurally normalize the lhs. - let lhs = if let Some(alias) = lhs.to_alias_ty(self.tcx()) { + let lhs = if let Some(alias) = lhs.to_alias_term() { let term = self.next_term_infer_of_kind(lhs); self.add_normalizes_to_goal(goal.with(tcx, ty::NormalizesTo { alias, term })); term @@ -38,7 +38,7 @@ impl<'tcx> EvalCtxt<'_, 'tcx> { }; // Structurally normalize the rhs. - let rhs = if let Some(alias) = rhs.to_alias_ty(self.tcx()) { + let rhs = if let Some(alias) = rhs.to_alias_term() { let term = self.next_term_infer_of_kind(rhs); self.add_normalizes_to_goal(goal.with(tcx, ty::NormalizesTo { alias, term })); term @@ -56,7 +56,7 @@ impl<'tcx> EvalCtxt<'_, 'tcx> { ty::AliasRelationDirection::Equate => ty::Variance::Invariant, ty::AliasRelationDirection::Subtype => ty::Variance::Covariant, }; - match (lhs.to_alias_ty(tcx), rhs.to_alias_ty(tcx)) { + match (lhs.to_alias_term(), rhs.to_alias_term()) { (None, None) => { self.relate(param_env, lhs, variance, rhs)?; self.evaluate_added_goals_and_make_canonical_response(Certainty::Yes) diff --git a/compiler/rustc_trait_selection/src/solve/assembly/structural_traits.rs b/compiler/rustc_trait_selection/src/solve/assembly/structural_traits.rs index eeaef028cdb..1474f8a679b 100644 --- a/compiler/rustc_trait_selection/src/solve/assembly/structural_traits.rs +++ b/compiler/rustc_trait_selection/src/solve/assembly/structural_traits.rs @@ -698,7 +698,7 @@ pub(in crate::solve) fn predicates_for_object_candidate<'tcx>( old_ty, None, "{} has two generic parameters: {} and {}", - proj.projection_ty, + proj.projection_term, proj.term, old_ty.unwrap() ); @@ -739,7 +739,11 @@ impl<'tcx> TypeFolder<TyCtxt<'tcx>> for ReplaceProjectionWith<'_, 'tcx> { // FIXME: Technically this equate could be fallible... self.nested.extend( self.ecx - .eq_and_get_goals(self.param_env, alias_ty, proj.projection_ty) + .eq_and_get_goals( + self.param_env, + alias_ty, + proj.projection_term.expect_ty(self.ecx.tcx()), + ) .expect("expected to be able to unify goal projection with dyn's projection"), ); proj.term.ty().unwrap() diff --git a/compiler/rustc_trait_selection/src/solve/eval_ctxt/mod.rs b/compiler/rustc_trait_selection/src/solve/eval_ctxt/mod.rs index 8614c17cabf..06c30bb82cf 100644 --- a/compiler/rustc_trait_selection/src/solve/eval_ctxt/mod.rs +++ b/compiler/rustc_trait_selection/src/solve/eval_ctxt/mod.rs @@ -747,7 +747,7 @@ impl<'tcx> EvalCtxt<'_, 'tcx> { pub(super) fn relate_rigid_alias_non_alias( &mut self, param_env: ty::ParamEnv<'tcx>, - alias: ty::AliasTy<'tcx>, + alias: ty::AliasTerm<'tcx>, variance: ty::Variance, term: ty::Term<'tcx>, ) -> Result<(), NoSolution> { @@ -764,13 +764,13 @@ impl<'tcx> EvalCtxt<'_, 'tcx> { // Alternatively we could modify `Equate` for this case by adding another // variant to `StructurallyRelateAliases`. let identity_args = self.fresh_args_for_item(alias.def_id); - let rigid_ctor = ty::AliasTy::new(tcx, alias.def_id, identity_args); - let ctor_ty = rigid_ctor.to_ty(tcx); + let rigid_ctor = ty::AliasTerm::new(tcx, alias.def_id, identity_args); + let ctor_term = rigid_ctor.to_term(tcx); let InferOk { value: (), obligations } = self .infcx .at(&ObligationCause::dummy(), param_env) - .trace(term, ctor_ty.into()) - .eq_structurally_relating_aliases(term, ctor_ty.into())?; + .trace(term, ctor_term) + .eq_structurally_relating_aliases(term, ctor_term)?; debug_assert!(obligations.is_empty()); self.relate(param_env, alias, variance, rigid_ctor) } else { diff --git a/compiler/rustc_trait_selection/src/solve/normalize.rs b/compiler/rustc_trait_selection/src/solve/normalize.rs index 1ac1827bf1c..5d5161e092e 100644 --- a/compiler/rustc_trait_selection/src/solve/normalize.rs +++ b/compiler/rustc_trait_selection/src/solve/normalize.rs @@ -7,7 +7,7 @@ use rustc_infer::infer::InferCtxt; use rustc_infer::traits::TraitEngineExt; use rustc_infer::traits::{FulfillmentError, Obligation, TraitEngine}; use rustc_middle::traits::ObligationCause; -use rustc_middle::ty::{self, AliasTy, Ty, TyCtxt, UniverseIndex}; +use rustc_middle::ty::{self, Ty, TyCtxt, UniverseIndex}; use rustc_middle::ty::{FallibleTypeFolder, TypeFolder, TypeSuperFoldable}; use rustc_middle::ty::{TypeFoldable, TypeVisitableExt}; @@ -63,7 +63,7 @@ impl<'tcx> NormalizationFolder<'_, 'tcx> { }; self.at.infcx.err_ctxt().report_overflow_error( - OverflowCause::DeeplyNormalize(data), + OverflowCause::DeeplyNormalize(data.into()), self.at.cause.span, true, |_| {}, @@ -108,7 +108,7 @@ impl<'tcx> NormalizationFolder<'_, 'tcx> { let recursion_limit = tcx.recursion_limit(); if !recursion_limit.value_within_limit(self.depth) { self.at.infcx.err_ctxt().report_overflow_error( - OverflowCause::DeeplyNormalize(ty::AliasTy::new(tcx, uv.def, uv.args)), + OverflowCause::DeeplyNormalize(uv.into()), self.at.cause.span, true, |_| {}, @@ -122,10 +122,7 @@ impl<'tcx> NormalizationFolder<'_, 'tcx> { tcx, self.at.cause.clone(), self.at.param_env, - ty::NormalizesTo { - alias: AliasTy::new(tcx, uv.def, uv.args), - term: new_infer_ct.into(), - }, + ty::NormalizesTo { alias: uv.into(), term: new_infer_ct.into() }, ); let result = if infcx.predicate_may_hold(&obligation) { diff --git a/compiler/rustc_trait_selection/src/solve/normalizes_to/inherent.rs b/compiler/rustc_trait_selection/src/solve/normalizes_to/inherent.rs index 439f9eec831..353bdb9caff 100644 --- a/compiler/rustc_trait_selection/src/solve/normalizes_to/inherent.rs +++ b/compiler/rustc_trait_selection/src/solve/normalizes_to/inherent.rs @@ -15,7 +15,7 @@ impl<'tcx> EvalCtxt<'_, 'tcx> { goal: Goal<'tcx, ty::NormalizesTo<'tcx>>, ) -> QueryResult<'tcx> { let tcx = self.tcx(); - let inherent = goal.predicate.alias; + let inherent = goal.predicate.alias.expect_ty(tcx); let impl_def_id = tcx.parent(inherent.def_id); let impl_args = self.fresh_args_for_item(impl_def_id); diff --git a/compiler/rustc_trait_selection/src/solve/normalizes_to/mod.rs b/compiler/rustc_trait_selection/src/solve/normalizes_to/mod.rs index 8d5c5d2a063..9dd76e55235 100644 --- a/compiler/rustc_trait_selection/src/solve/normalizes_to/mod.rs +++ b/compiler/rustc_trait_selection/src/solve/normalizes_to/mod.rs @@ -40,19 +40,8 @@ impl<'tcx> EvalCtxt<'_, 'tcx> { Ok(res) => Ok(res), Err(NoSolution) => { let Goal { param_env, predicate: NormalizesTo { alias, term } } = goal; - if alias.opt_kind(self.tcx()).is_some() { - self.relate_rigid_alias_non_alias( - param_env, - alias, - ty::Variance::Invariant, - term, - )?; - self.evaluate_added_goals_and_make_canonical_response(Certainty::Yes) - } else { - // FIXME(generic_const_exprs): we currently do not support rigid - // unevaluated constants. - Err(NoSolution) - } + self.relate_rigid_alias_non_alias(param_env, alias, ty::Variance::Invariant, term)?; + self.evaluate_added_goals_and_make_canonical_response(Certainty::Yes) } } } @@ -132,7 +121,7 @@ impl<'tcx> assembly::GoalKind<'tcx> for NormalizesTo<'tcx> { ecx.eq( goal.param_env, goal.predicate.alias, - assumption_projection_pred.projection_ty, + assumption_projection_pred.projection_term, )?; ecx.instantiate_normalizes_to_term(goal, assumption_projection_pred.term); @@ -373,7 +362,7 @@ impl<'tcx> assembly::GoalKind<'tcx> for NormalizesTo<'tcx> { let pred = tupled_inputs_and_output .map_bound(|(inputs, output)| ty::ProjectionPredicate { - projection_ty: ty::AliasTy::new( + projection_term: ty::AliasTerm::new( tcx, goal.predicate.def_id(), [goal.predicate.self_ty(), inputs], @@ -425,9 +414,9 @@ impl<'tcx> assembly::GoalKind<'tcx> for NormalizesTo<'tcx> { output_coroutine_ty, coroutine_return_ty, }| { - let (projection_ty, term) = match tcx.item_name(goal.predicate.def_id()) { + let (projection_term, term) = match tcx.item_name(goal.predicate.def_id()) { sym::CallOnceFuture => ( - ty::AliasTy::new( + ty::AliasTerm::new( tcx, goal.predicate.def_id(), [goal.predicate.self_ty(), tupled_inputs_ty], @@ -435,7 +424,7 @@ impl<'tcx> assembly::GoalKind<'tcx> for NormalizesTo<'tcx> { output_coroutine_ty.into(), ), sym::CallRefFuture => ( - ty::AliasTy::new( + ty::AliasTerm::new( tcx, goal.predicate.def_id(), [ @@ -447,7 +436,7 @@ impl<'tcx> assembly::GoalKind<'tcx> for NormalizesTo<'tcx> { output_coroutine_ty.into(), ), sym::Output => ( - ty::AliasTy::new( + ty::AliasTerm::new( tcx, goal.predicate.def_id(), [ @@ -459,7 +448,7 @@ impl<'tcx> assembly::GoalKind<'tcx> for NormalizesTo<'tcx> { ), name => bug!("no such associated type: {name}"), }; - ty::ProjectionPredicate { projection_ty, term } + ty::ProjectionPredicate { projection_term, term } }, ) .to_predicate(tcx); @@ -636,7 +625,7 @@ impl<'tcx> assembly::GoalKind<'tcx> for NormalizesTo<'tcx> { CandidateSource::BuiltinImpl(BuiltinImplSource::Misc), goal, ty::ProjectionPredicate { - projection_ty: ty::AliasTy::new(ecx.tcx(), goal.predicate.def_id(), [self_ty]), + projection_term: ty::AliasTerm::new(ecx.tcx(), goal.predicate.def_id(), [self_ty]), term, } .to_predicate(tcx), @@ -668,7 +657,7 @@ impl<'tcx> assembly::GoalKind<'tcx> for NormalizesTo<'tcx> { CandidateSource::BuiltinImpl(BuiltinImplSource::Misc), goal, ty::ProjectionPredicate { - projection_ty: ty::AliasTy::new(ecx.tcx(), goal.predicate.def_id(), [self_ty]), + projection_term: ty::AliasTerm::new(ecx.tcx(), goal.predicate.def_id(), [self_ty]), term, } .to_predicate(tcx), @@ -752,7 +741,7 @@ impl<'tcx> assembly::GoalKind<'tcx> for NormalizesTo<'tcx> { CandidateSource::BuiltinImpl(BuiltinImplSource::Misc), goal, ty::ProjectionPredicate { - projection_ty: ty::AliasTy::new( + projection_term: ty::AliasTerm::new( ecx.tcx(), goal.predicate.def_id(), [self_ty, coroutine.resume_ty()], diff --git a/compiler/rustc_trait_selection/src/solve/project_goals.rs b/compiler/rustc_trait_selection/src/solve/project_goals.rs index 74b3db71e78..0f1be1072a8 100644 --- a/compiler/rustc_trait_selection/src/solve/project_goals.rs +++ b/compiler/rustc_trait_selection/src/solve/project_goals.rs @@ -11,19 +11,7 @@ impl<'tcx> EvalCtxt<'_, 'tcx> { goal: Goal<'tcx, ProjectionPredicate<'tcx>>, ) -> QueryResult<'tcx> { let tcx = self.tcx(); - let projection_term = match goal.predicate.term.unpack() { - ty::TermKind::Ty(_) => goal.predicate.projection_ty.to_ty(tcx).into(), - ty::TermKind::Const(_) => ty::Const::new_unevaluated( - tcx, - ty::UnevaluatedConst::new( - goal.predicate.projection_ty.def_id, - goal.predicate.projection_ty.args, - ), - tcx.type_of(goal.predicate.projection_ty.def_id) - .instantiate(tcx, goal.predicate.projection_ty.args), - ) - .into(), - }; + let projection_term = goal.predicate.projection_term.to_term(tcx); let goal = goal.with( tcx, ty::PredicateKind::AliasRelate( |