bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

resolve: Tweak some naming around import ambiguities

Browse source
This commit is contained in:
Vadim Petrochenkov 2024-06-25 19:03:39 +03:00
parent d929a42a66
commit b6074fffd1
4 changed files with 42 additions and 50 deletions
Download patch file Download diff file Expand all files Collapse all files

74
compiler/rustc_resolve/src/imports.rs
View file

@ -325,8 +325,8 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
}
match (old_binding.is_glob_import(), binding.is_glob_import()) {
(true, true) => {
// FIXME: remove `!binding.is_ambiguity()` after delete the warning ambiguity.
if !binding.is_ambiguity()
// FIXME: remove `!binding.is_ambiguity_recursive()` after delete the warning ambiguity.
if !binding.is_ambiguity_recursive()
&& let NameBindingKind::Import { import: old_import, .. } =
old_binding.kind
&& let NameBindingKind::Import { import, .. } = binding.kind
@ -337,21 +337,17 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
// imported from the same glob-import statement.
resolution.binding = Some(binding);
} else if res != old_binding.res() {
let binding = if warn_ambiguity {
this.warn_ambiguity(AmbiguityKind::GlobVsGlob, old_binding, binding)
} else {
this.ambiguity(AmbiguityKind::GlobVsGlob, old_binding, binding)
};
resolution.binding = Some(binding);
resolution.binding = Some(this.new_ambiguity_binding(
AmbiguityKind::GlobVsGlob,
old_binding,
binding,
warn_ambiguity,
));
} else if !old_binding.vis.is_at_least(binding.vis, this.tcx) {
// We are glob-importing the same item but with greater visibility.
resolution.binding = Some(binding);
} else if binding.is_ambiguity() {
resolution.binding =
Some(self.arenas.alloc_name_binding(NameBindingData {
warn_ambiguity: true,
..(*binding).clone()
}));
} else if binding.is_ambiguity_recursive() {
resolution.binding = Some(this.new_warn_ambiguity_binding(binding));
}
}
(old_glob @ true, false) | (old_glob @ false, true) => {
@ -361,24 +357,26 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
&& nonglob_binding.expansion != LocalExpnId::ROOT
&& glob_binding.res() != nonglob_binding.res()
{
resolution.binding = Some(this.ambiguity(
resolution.binding = Some(this.new_ambiguity_binding(
AmbiguityKind::GlobVsExpanded,
nonglob_binding,
glob_binding,
false,
));
} else {
resolution.binding = Some(nonglob_binding);
}
if let Some(old_binding) = resolution.shadowed_glob {
assert!(old_binding.is_glob_import());
if glob_binding.res() != old_binding.res() {
resolution.shadowed_glob = Some(this.ambiguity(
if let Some(old_shadowed_glob) = resolution.shadowed_glob {
assert!(old_shadowed_glob.is_glob_import());
if glob_binding.res() != old_shadowed_glob.res() {
resolution.shadowed_glob = Some(this.new_ambiguity_binding(
AmbiguityKind::GlobVsGlob,
old_binding,
old_shadowed_glob,
glob_binding,
false,
));
} else if !old_binding.vis.is_at_least(binding.vis, this.tcx) {
} else if !old_shadowed_glob.vis.is_at_least(binding.vis, this.tcx) {
resolution.shadowed_glob = Some(glob_binding);
}
} else {
@ -397,29 +395,21 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
})
}
fn ambiguity(
fn new_ambiguity_binding(
&self,
kind: AmbiguityKind,
ambiguity_kind: AmbiguityKind,
primary_binding: NameBinding<'a>,
secondary_binding: NameBinding<'a>,
warn_ambiguity: bool,
) -> NameBinding<'a> {
self.arenas.alloc_name_binding(NameBindingData {
ambiguity: Some((secondary_binding, kind)),
..(*primary_binding).clone()
})
let ambiguity = Some((secondary_binding, ambiguity_kind));
let data = NameBindingData { ambiguity, warn_ambiguity, ..*primary_binding };
self.arenas.alloc_name_binding(data)
}
fn warn_ambiguity(
&self,
kind: AmbiguityKind,
primary_binding: NameBinding<'a>,
secondary_binding: NameBinding<'a>,
) -> NameBinding<'a> {
self.arenas.alloc_name_binding(NameBindingData {
ambiguity: Some((secondary_binding, kind)),
warn_ambiguity: true,
..(*primary_binding).clone()
})
fn new_warn_ambiguity_binding(&self, binding: NameBinding<'a>) -> NameBinding<'a> {
assert!(binding.is_ambiguity_recursive());
self.arenas.alloc_name_binding(NameBindingData { warn_ambiguity: true, ..*binding })
}
// Use `f` to mutate the resolution of the name in the module.
@ -1381,8 +1371,8 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
target_bindings[ns].get(),
) {
Ok(other_binding) => {
is_redundant =
binding.res() == other_binding.res() && !other_binding.is_ambiguity();
is_redundant = binding.res() == other_binding.res()
&& !other_binding.is_ambiguity_recursive();
if is_redundant {
redundant_span[ns] =
Some((other_binding.span, other_binding.is_import()));
@ -1455,7 +1445,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
.resolution(import.parent_scope.module, key)
.borrow()
.binding()
.is_some_and(|binding| binding.is_warn_ambiguity());
.is_some_and(|binding| binding.warn_ambiguity_recursive());
let _ = self.try_define(
import.parent_scope.module,
key,
@ -1480,7 +1470,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
module.for_each_child(self, |this, ident, _, binding| {
let res = binding.res().expect_non_local();
let error_ambiguity = binding.is_ambiguity() && !binding.warn_ambiguity;
let error_ambiguity = binding.is_ambiguity_recursive() && !binding.warn_ambiguity;
if res != def::Res::Err && !error_ambiguity {
let mut reexport_chain = SmallVec::new();
let mut next_binding = binding;