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Replace Deref bounds on Interner in favor of a SliceLike trait

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This commit is contained in:
Michael Goulet
2024-06-21 13:55:21 -04:00
parent f26cc349d9
commit 24e41f1d13
22 changed files with 221 additions and 159 deletions
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4
compiler/rustc_next_trait_solver/src/solve/assembly/mod.rs
View File

@@ -527,7 +527,7 @@ where
};
for assumption in
self.cx().item_bounds(alias_ty.def_id).iter_instantiated(self.cx(), &alias_ty.args)
self.cx().item_bounds(alias_ty.def_id).iter_instantiated(self.cx(), alias_ty.args)
{
candidates.extend(G::probe_and_consider_implied_clause(
self,
@@ -603,7 +603,7 @@ where
// Consider all of the auto-trait and projection bounds, which don't
// need to be recorded as a `BuiltinImplSource::Object` since they don't
// really have a vtable base...
for bound in bounds {
for bound in bounds.iter() {
match bound.skip_binder() {
ty::ExistentialPredicate::Trait(_) => {
// Skip principal

33
compiler/rustc_next_trait_solver/src/solve/assembly/structural_traits.rs
View File

@@ -58,7 +58,7 @@ where
ty::Tuple(tys) => {
// (T1, ..., Tn) -- meets any bound that all of T1...Tn meet
Ok(tys.into_iter().map(ty::Binder::dummy).collect())
Ok(tys.iter().map(ty::Binder::dummy).collect())
}
ty::Closure(_, args) => Ok(vec![ty::Binder::dummy(args.as_closure().tupled_upvars_ty())]),
@@ -79,23 +79,21 @@ where
.cx()
.bound_coroutine_hidden_types(def_id)
.into_iter()
.map(|bty| bty.instantiate(tcx, &args))
.map(|bty| bty.instantiate(tcx, args))
.collect()),
// For `PhantomData<T>`, we pass `T`.
ty::Adt(def, args) if def.is_phantom_data() => Ok(vec![ty::Binder::dummy(args.type_at(0))]),
ty::Adt(def, args) => Ok(def
.all_field_tys(tcx)
.iter_instantiated(tcx, &args)
.map(ty::Binder::dummy)
.collect()),
ty::Adt(def, args) => {
Ok(def.all_field_tys(tcx).iter_instantiated(tcx, args).map(ty::Binder::dummy).collect())
}
ty::Alias(ty::Opaque, ty::AliasTy { def_id, args, .. }) => {
// We can resolve the `impl Trait` to its concrete type,
// which enforces a DAG between the functions requiring
// the auto trait bounds in question.
Ok(vec![ty::Binder::dummy(tcx.type_of(def_id).instantiate(tcx, &args))])
Ok(vec![ty::Binder::dummy(tcx.type_of(def_id).instantiate(tcx, args))])
}
}
}
@@ -147,7 +145,7 @@ where
// impl Sized for ()
// impl Sized for (T1, T2, .., Tn) where Tn: Sized if n >= 1
ty::Tuple(tys) => Ok(tys.last().map_or_else(Vec::new, |&ty| vec![ty::Binder::dummy(ty)])),
ty::Tuple(tys) => Ok(tys.last().map_or_else(Vec::new, |ty| vec![ty::Binder::dummy(ty)])),
// impl Sized for Adt<Args...> where sized_constraint(Adt)<Args...>: Sized
// `sized_constraint(Adt)` is the deepest struct trail that can be determined
@@ -160,7 +158,7 @@ where
// if the ADT is sized for all possible args.
ty::Adt(def, args) => {
if let Some(sized_crit) = def.sized_constraint(ecx.cx()) {
Ok(vec![ty::Binder::dummy(sized_crit.instantiate(ecx.cx(), &args))])
Ok(vec![ty::Binder::dummy(sized_crit.instantiate(ecx.cx(), args))])
} else {
Ok(vec![])
}
@@ -213,7 +211,7 @@ where
}
// impl Copy/Clone for (T1, T2, .., Tn) where T1: Copy/Clone, T2: Copy/Clone, .. Tn: Copy/Clone
ty::Tuple(tys) => Ok(tys.into_iter().map(ty::Binder::dummy).collect()),
ty::Tuple(tys) => Ok(tys.iter().map(ty::Binder::dummy).collect()),
// impl Copy/Clone for Closure where Self::TupledUpvars: Copy/Clone
ty::Closure(_, args) => Ok(vec![ty::Binder::dummy(args.as_closure().tupled_upvars_ty())]),
@@ -242,7 +240,7 @@ where
.cx()
.bound_coroutine_hidden_types(def_id)
.into_iter()
.map(|bty| bty.instantiate(ecx.cx(), &args))
.map(|bty| bty.instantiate(ecx.cx(), args))
.collect()),
}
}
@@ -259,7 +257,7 @@ pub(in crate::solve) fn extract_tupled_inputs_and_output_from_callable<I: Intern
let sig = tcx.fn_sig(def_id);
if sig.skip_binder().is_fn_trait_compatible() && !tcx.has_target_features(def_id) {
Ok(Some(
sig.instantiate(tcx, &args)
sig.instantiate(tcx, args)
.map_bound(|sig| (Ty::new_tup(tcx, &sig.inputs()), sig.output())),
))
} else {
@@ -669,7 +667,7 @@ where
let tcx = ecx.cx();
let mut requirements = vec![];
requirements
.extend(tcx.super_predicates_of(trait_ref.def_id).iter_instantiated(tcx, &trait_ref.args));
.extend(tcx.super_predicates_of(trait_ref.def_id).iter_instantiated(tcx, trait_ref.args));
// FIXME(associated_const_equality): Also add associated consts to
// the requirements here.
@@ -680,13 +678,12 @@ where
continue;
}
requirements.extend(
tcx.item_bounds(associated_type_def_id).iter_instantiated(tcx, &trait_ref.args),
);
requirements
.extend(tcx.item_bounds(associated_type_def_id).iter_instantiated(tcx, trait_ref.args));
}
let mut replace_projection_with = HashMap::default();
for bound in object_bounds {
for bound in object_bounds.iter() {
if let ty::ExistentialPredicate::Projection(proj) = bound.skip_binder() {
let proj = proj.with_self_ty(tcx, trait_ref.self_ty());
let old_ty = replace_projection_with.insert(proj.def_id(), bound.rebind(proj));