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resolve: Not all imports have their own NodeId

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This commit is contained in:
Vadim Petrochenkov 2022-10-30 13:35:31 +04:00
parent 2afca78a0b
commit 637bfe68a1
6 changed files with 143 additions and 105 deletions
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48
compiler/rustc_resolve/src/effective_visibilities.rs
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@ -57,26 +57,40 @@ impl<'r, 'a> EffectiveVisibilitiesVisitor<'r, 'a> {
while let NameBindingKind::Import { binding: nested_binding, import, .. } =
binding.kind
{
let mut update = |node_id| self.update(
self.r.local_def_id(node_id),
binding.vis.expect_local(),
prev_parent_id,
level,
);
// In theory all the import IDs have individual visibilities and effective
// visibilities, but in practice these IDs go straigth to HIR where all
// their few uses assume that their (effective) visibility applies to the
// whole syntactic `use` item. So we update them all to the maximum value
// among the potential individual effective visibilities. Maybe HIR for
// imports shouldn't use three IDs at all.
update(import.id);
if let ImportKind::Single { additional_ids, .. } = import.kind {
update(additional_ids.0);
update(additional_ids.1);
let mut update = |node_id| {
self.update(
self.r.local_def_id(node_id),
binding.vis.expect_local(),
prev_parent_id,
level,
)
};
match import.kind {
ImportKind::Single { id, additional_ids, .. } => {
// In theory all the import IDs have individual visibilities and
// effective visibilities, but in practice these IDs go straigth to
// HIR where all their few uses assume that their (effective)
// visibility applies to the whole syntactic `use` item. So we
// update them all to the maximum value among the potential
// individual effective visibilities. Maybe HIR for imports
// shouldn't use three IDs at all.
update(id);
update(additional_ids.0);
update(additional_ids.1);
prev_parent_id = self.r.local_def_id(id);
}
ImportKind::Glob { id, .. } | ImportKind::ExternCrate { id, .. } => {
update(id);
prev_parent_id = self.r.local_def_id(id);
}
ImportKind::MacroUse => {
// In theory we should reset the parent id to something private
// here, but `macro_use` imports always refer to external items,
// so it doesn't matter and we can just do nothing.
}
}
level = Level::Reexported;
prev_parent_id = self.r.local_def_id(import.id);
binding = nested_binding;
}
}