bjoernager/rust
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Store associated item defaultness in impl_defaultness.

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This commit is contained in:
Camille GILLOT 2022-03-12 19:36:11 +01:00
parent c9e134e1b6
commit 110f0656cb
25 changed files with 89 additions and 107 deletions
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5
compiler/rustc_ast_lowering/src/index.rs
View file

@ -323,7 +323,7 @@ impl<'a, 'hir> Visitor<'hir> for NodeCollector<'a, 'hir> {
fn visit_trait_item_ref(&mut self, ii: &'hir TraitItemRef) {
// Do not visit the duplicate information in TraitItemRef. We want to
// map the actual nodes, not the duplicate ones in the *Ref.
let TraitItemRef { id, ident: _, kind: _, span: _, defaultness: _ } = *ii;
let TraitItemRef { id, ident: _, kind: _, span: _ } = *ii;
self.visit_nested_trait_item(id);
}
@ -331,8 +331,7 @@ impl<'a, 'hir> Visitor<'hir> for NodeCollector<'a, 'hir> {
fn visit_impl_item_ref(&mut self, ii: &'hir ImplItemRef) {
// Do not visit the duplicate information in ImplItemRef. We want to
// map the actual nodes, not the duplicate ones in the *Ref.
let ImplItemRef { id, ident: _, kind: _, span: _, defaultness: _, trait_item_def_id: _ } =
*ii;
let ImplItemRef { id, ident: _, kind: _, span: _, trait_item_def_id: _ } = *ii;
self.visit_nested_impl_item(id);
}

37
compiler/rustc_ast_lowering/src/item.rs
View file

@ -755,17 +755,17 @@ impl<'hir> LoweringContext<'_, 'hir> {
let hir_id = self.lower_node_id(i.id);
let trait_item_def_id = hir_id.expect_owner();
let (generics, kind) = match i.kind {
let (generics, kind, has_default) = match i.kind {
AssocItemKind::Const(_, ref ty, ref default) => {
let ty = self.lower_ty(ty, ImplTraitContext::Disallowed(ImplTraitPosition::Type));
let body = default.as_ref().map(|x| self.lower_const_body(i.span, Some(x)));
(hir::Generics::empty(), hir::TraitItemKind::Const(ty, body))
(hir::Generics::empty(), hir::TraitItemKind::Const(ty, body), body.is_some())
}
AssocItemKind::Fn(box Fn { ref sig, ref generics, body: None, .. }) => {
let names = self.lower_fn_params_to_names(&sig.decl);
let (generics, sig) =
self.lower_method_sig(generics, sig, i.id, FnDeclKind::Trait, None);
(generics, hir::TraitItemKind::Fn(sig, hir::TraitFn::Required(names)))
(generics, hir::TraitItemKind::Fn(sig, hir::TraitFn::Required(names)), false)
}
AssocItemKind::Fn(box Fn { ref sig, ref generics, body: Some(ref body), .. }) => {
let asyncness = sig.header.asyncness;
@ -778,7 +778,7 @@ impl<'hir> LoweringContext<'_, 'hir> {
FnDeclKind::Trait,
asyncness.opt_return_id(),
);
(generics, hir::TraitItemKind::Fn(sig, hir::TraitFn::Provided(body_id)))
(generics, hir::TraitItemKind::Fn(sig, hir::TraitFn::Provided(body_id)), true)
}
AssocItemKind::TyAlias(box TyAlias {
ref generics,
@ -789,7 +789,7 @@ impl<'hir> LoweringContext<'_, 'hir> {
}) => {
let mut generics = generics.clone();
add_ty_alias_where_clause(&mut generics, where_clauses, false);
self.lower_generics(
let (generics, kind) = self.lower_generics(
&generics,
i.id,
ImplTraitContext::Disallowed(ImplTraitPosition::Generic),
@ -805,7 +805,8 @@ impl<'hir> LoweringContext<'_, 'hir> {
ty,
)
},
)
);
(generics, kind, ty.is_some())
}
AssocItemKind::MacCall(..) => panic!("macro item shouldn't exist at this point"),
};
@ -817,28 +818,25 @@ impl<'hir> LoweringContext<'_, 'hir> {
generics,
kind,
span: self.lower_span(i.span),
defaultness: hir::Defaultness::Default { has_value: has_default },
};
self.arena.alloc(item)
}
fn lower_trait_item_ref(&mut self, i: &AssocItem) -> hir::TraitItemRef {
let (kind, has_default) = match &i.kind {
AssocItemKind::Const(_, _, default) => (hir::AssocItemKind::Const, default.is_some()),
AssocItemKind::TyAlias(box TyAlias { ty, .. }) => {
(hir::AssocItemKind::Type, ty.is_some())
}
AssocItemKind::Fn(box Fn { sig, body, .. }) => {
(hir::AssocItemKind::Fn { has_self: sig.decl.has_self() }, body.is_some())
let kind = match &i.kind {
AssocItemKind::Const(..) => hir::AssocItemKind::Const,
AssocItemKind::TyAlias(..) => hir::AssocItemKind::Type,
AssocItemKind::Fn(box Fn { sig, .. }) => {
hir::AssocItemKind::Fn { has_self: sig.decl.has_self() }
}
AssocItemKind::MacCall(..) => unimplemented!(),
};
let id = hir::TraitItemId { def_id: self.local_def_id(i.id) };
let defaultness = hir::Defaultness::Default { has_value: has_default };
hir::TraitItemRef {
id,
ident: self.lower_ident(i.ident),
span: self.lower_span(i.span),
defaultness,
kind,
}
}
@ -849,6 +847,10 @@ impl<'hir> LoweringContext<'_, 'hir> {
}
fn lower_impl_item(&mut self, i: &AssocItem) -> &'hir hir::ImplItem<'hir> {
// Since `default impl` is not yet implemented, this is always true in impls.
let has_value = true;
let (defaultness, _) = self.lower_defaultness(i.kind.defaultness(), has_value);
let (generics, kind) = match &i.kind {
AssocItemKind::Const(_, ty, expr) => {
let ty = self.lower_ty(ty, ImplTraitContext::Disallowed(ImplTraitPosition::Type));
@ -903,19 +905,16 @@ impl<'hir> LoweringContext<'_, 'hir> {
kind,
vis_span: self.lower_span(i.vis.span),
span: self.lower_span(i.span),
defaultness,
};
self.arena.alloc(item)
}
fn lower_impl_item_ref(&mut self, i: &AssocItem) -> hir::ImplItemRef {
// Since `default impl` is not yet implemented, this is always true in impls.
let has_value = true;
let (defaultness, _) = self.lower_defaultness(i.kind.defaultness(), has_value);
hir::ImplItemRef {
id: hir::ImplItemId { def_id: self.local_def_id(i.id) },
ident: self.lower_ident(i.ident),
span: self.lower_span(i.span),
defaultness,
kind: match &i.kind {
AssocItemKind::Const(..) => hir::AssocItemKind::Const,
AssocItemKind::TyAlias(..) => hir::AssocItemKind::Type,