bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Add lang items for AsyncFn's associated types

Browse source
This commit is contained in:
Michael Goulet 2024-05-29 14:06:39 -04:00
parent f2e1a3a80a
commit 7f11d6f4bf
4 changed files with 23 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

22
compiler/rustc_trait_selection/src/solve/normalizes_to/mod.rs
View file

@ -407,16 +407,20 @@ impl<'tcx> assembly::GoalKind<'tcx> for NormalizesTo<'tcx> {
output_coroutine_ty,
coroutine_return_ty,
}| {
let (projection_term, term) = match tcx.item_name(goal.predicate.def_id()) {
sym::CallOnceFuture => (
let lang_items = tcx.lang_items();
let (projection_term, term) = if Some(goal.predicate.def_id())
== lang_items.call_once_future()
{
(
ty::AliasTerm::new(
tcx,
goal.predicate.def_id(),
[goal.predicate.self_ty(), tupled_inputs_ty],
),
output_coroutine_ty.into(),
),
sym::CallRefFuture => (
)
} else if Some(goal.predicate.def_id()) == lang_items.call_ref_future() {
(
ty::AliasTerm::new(
tcx,
goal.predicate.def_id(),
@ -427,8 +431,9 @@ impl<'tcx> assembly::GoalKind<'tcx> for NormalizesTo<'tcx> {
],
),
output_coroutine_ty.into(),
),
sym::Output => (
)
} else if Some(goal.predicate.def_id()) == lang_items.async_fn_once_output() {
(
ty::AliasTerm::new(
tcx,
goal.predicate.def_id(),
@ -438,8 +443,9 @@ impl<'tcx> assembly::GoalKind<'tcx> for NormalizesTo<'tcx> {
],
),
coroutine_return_ty.into(),
),
name => bug!("no such associated type: {name}"),
)
} else {
bug!("no such associated type in `AsyncFn*`: {:?}", goal.predicate.def_id())
};
ty::ProjectionPredicate { projection_term, term }
},