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Properly document lifetime_mapping in OpaqueTy

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This commit is contained in:
Michael Goulet 2023-07-17 14:56:14 +00:00
parent 11da267fdb
commit 603fd426df
3 changed files with 28 additions and 15 deletions
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24
compiler/rustc_ast_lowering/src/lib.rs
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@ -1619,13 +1619,15 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
debug!(?hir_bounds);
let lifetime_mapping = if in_trait {
self.arena.alloc_from_iter(
collected_lifetime_mapping
.iter()
.map(|(lifetime, def_id)| (**lifetime, *def_id)),
Some(
&*self.arena.alloc_from_iter(
collected_lifetime_mapping
.iter()
.map(|(lifetime, def_id)| (**lifetime, *def_id)),
),
)
} else {
&mut []
None
};
let opaque_ty_item = hir::OpaqueTy {
@ -2090,13 +2092,15 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
debug!("lower_async_fn_ret_ty: generic_params={:#?}", generic_params);
let lifetime_mapping = if in_trait {
self.arena.alloc_from_iter(
collected_lifetime_mapping
.iter()
.map(|(lifetime, def_id)| (**lifetime, *def_id)),
Some(
&*self.arena.alloc_from_iter(
collected_lifetime_mapping
.iter()
.map(|(lifetime, def_id)| (**lifetime, *def_id)),
),
)
} else {
&mut []
None
};
let opaque_ty_item = hir::OpaqueTy {