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Add note to resolve error about generics from inside static/const

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This commit is contained in:
clubby789
2024-01-13 19:14:02 +00:00
parent 1d8d7b16cb
commit 511bf6e1c7
11 changed files with 98 additions and 32 deletions
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46
compiler/rustc_resolve/src/late.rs
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@@ -181,7 +181,7 @@ pub(crate) enum RibKind<'a> {
FnOrCoroutine,
/// We passed through an item scope. Disallow upvars.
Item(HasGenericParams),
Item(HasGenericParams, DefKind),
/// We're in a constant item. Can't refer to dynamic stuff.
///
@@ -221,7 +221,7 @@ impl RibKind<'_> {
| RibKind::MacroDefinition(_)
| RibKind::ConstParamTy
| RibKind::InlineAsmSym => false,
RibKind::AssocItem | RibKind::Item(_) | RibKind::ForwardGenericParamBan => true,
RibKind::AssocItem | RibKind::Item(..) | RibKind::ForwardGenericParamBan => true,
}
}
@@ -866,11 +866,12 @@ impl<'a: 'ast, 'ast, 'tcx> Visitor<'ast> for LateResolutionVisitor<'a, '_, 'ast,
}
fn visit_foreign_item(&mut self, foreign_item: &'ast ForeignItem) {
self.resolve_doc_links(&foreign_item.attrs, MaybeExported::Ok(foreign_item.id));
let def_kind = self.r.local_def_kind(foreign_item.id);
match foreign_item.kind {
ForeignItemKind::TyAlias(box TyAlias { ref generics, .. }) => {
self.with_generic_param_rib(
&generics.params,
RibKind::Item(HasGenericParams::Yes(generics.span)),
RibKind::Item(HasGenericParams::Yes(generics.span), def_kind),
LifetimeRibKind::Generics {
binder: foreign_item.id,
kind: LifetimeBinderKind::Item,
@@ -882,7 +883,7 @@ impl<'a: 'ast, 'ast, 'tcx> Visitor<'ast> for LateResolutionVisitor<'a, '_, 'ast,
ForeignItemKind::Fn(box Fn { ref generics, .. }) => {
self.with_generic_param_rib(
&generics.params,
RibKind::Item(HasGenericParams::Yes(generics.span)),
RibKind::Item(HasGenericParams::Yes(generics.span), def_kind),
LifetimeRibKind::Generics {
binder: foreign_item.id,
kind: LifetimeBinderKind::Function,
@@ -892,7 +893,7 @@ impl<'a: 'ast, 'ast, 'tcx> Visitor<'ast> for LateResolutionVisitor<'a, '_, 'ast,
);
}
ForeignItemKind::Static(..) => {
self.with_static_rib(|this| {
self.with_static_rib(def_kind, |this| {
visit::walk_foreign_item(this, foreign_item);
});
}
@@ -2268,10 +2269,11 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
fn resolve_adt(&mut self, item: &'ast Item, generics: &'ast Generics) {
debug!("resolve_adt");
let kind = self.r.local_def_kind(item.id);
self.with_current_self_item(item, |this| {
this.with_generic_param_rib(
&generics.params,
RibKind::Item(HasGenericParams::Yes(generics.span)),
RibKind::Item(HasGenericParams::Yes(generics.span), kind),
LifetimeRibKind::Generics {
binder: item.id,
kind: LifetimeBinderKind::Item,
@@ -2345,11 +2347,12 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
let name = item.ident.name;
debug!("(resolving item) resolving {} ({:?})", name, item.kind);
let def_kind = self.r.local_def_kind(item.id);
match item.kind {
ItemKind::TyAlias(box TyAlias { ref generics, .. }) => {
self.with_generic_param_rib(
&generics.params,
RibKind::Item(HasGenericParams::Yes(generics.span)),
RibKind::Item(HasGenericParams::Yes(generics.span), def_kind),
LifetimeRibKind::Generics {
binder: item.id,
kind: LifetimeBinderKind::Item,
@@ -2362,7 +2365,7 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
ItemKind::Fn(box Fn { ref generics, .. }) => {
self.with_generic_param_rib(
&generics.params,
RibKind::Item(HasGenericParams::Yes(generics.span)),
RibKind::Item(HasGenericParams::Yes(generics.span), def_kind),
LifetimeRibKind::Generics {
binder: item.id,
kind: LifetimeBinderKind::Function,
@@ -2401,7 +2404,7 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
// Create a new rib for the trait-wide type parameters.
self.with_generic_param_rib(
&generics.params,
RibKind::Item(HasGenericParams::Yes(generics.span)),
RibKind::Item(HasGenericParams::Yes(generics.span), def_kind),
LifetimeRibKind::Generics {
binder: item.id,
kind: LifetimeBinderKind::Item,
@@ -2422,7 +2425,7 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
// Create a new rib for the trait-wide type parameters.
self.with_generic_param_rib(
&generics.params,
RibKind::Item(HasGenericParams::Yes(generics.span)),
RibKind::Item(HasGenericParams::Yes(generics.span), def_kind),
LifetimeRibKind::Generics {
binder: item.id,
kind: LifetimeBinderKind::Item,
@@ -2456,7 +2459,7 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
}
ItemKind::Static(box ast::StaticItem { ref ty, ref expr, .. }) => {
self.with_static_rib(|this| {
self.with_static_rib(def_kind, |this| {
this.with_lifetime_rib(LifetimeRibKind::Elided(LifetimeRes::Static), |this| {
this.visit_ty(ty);
});
@@ -2471,11 +2474,14 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
ItemKind::Const(box ast::ConstItem { ref generics, ref ty, ref expr, .. }) => {
self.with_generic_param_rib(
&generics.params,
RibKind::Item(if self.r.tcx.features().generic_const_items {
HasGenericParams::Yes(generics.span)
} else {
HasGenericParams::No
}),
RibKind::Item(
if self.r.tcx.features().generic_const_items {
HasGenericParams::Yes(generics.span)
} else {
HasGenericParams::No
},
def_kind,
),
LifetimeRibKind::Generics {
binder: item.id,
kind: LifetimeBinderKind::ConstItem,
@@ -2560,7 +2566,7 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
let mut add_bindings_for_ns = |ns| {
let parent_rib = self.ribs[ns]
.iter()
.rfind(|r| matches!(r.kind, RibKind::Item(_)))
.rfind(|r| matches!(r.kind, RibKind::Item(..)))
.expect("associated item outside of an item");
seen_bindings.extend(parent_rib.bindings.keys().map(|ident| (*ident, ident.span)));
};
@@ -2695,8 +2701,8 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
self.label_ribs.pop();
}
fn with_static_rib(&mut self, f: impl FnOnce(&mut Self)) {
let kind = RibKind::Item(HasGenericParams::No);
fn with_static_rib(&mut self, def_kind: DefKind, f: impl FnOnce(&mut Self)) {
let kind = RibKind::Item(HasGenericParams::No, def_kind);
self.with_rib(ValueNS, kind, |this| this.with_rib(TypeNS, kind, f))
}
@@ -2877,7 +2883,7 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
// If applicable, create a rib for the type parameters.
self.with_generic_param_rib(
&generics.params,
RibKind::Item(HasGenericParams::Yes(generics.span)),
RibKind::Item(HasGenericParams::Yes(generics.span), self.r.local_def_kind(item_id)),
LifetimeRibKind::Generics {
span: generics.span,
binder: item_id,