Remove AttributeLintKind::DocAutoCfgExpectsHideOrShow variant

compiler/rustc_attr_parsing/src/attributes/doc.rs

@@ -13,6 +13,7 @@
 use super::prelude::{ALL_TARGETS, AllowedTargets};
 use super::{AcceptMapping, AttributeParser};
 use crate::context::{AcceptContext, FinalizeContext, Stage};
+use crate::errors::{DocAliasDuplicated, DocAutoCfgExpectsHideOrShow, IllFormedAttributeInput};
 use crate::parser::{ArgParser, MetaItemOrLitParser, MetaItemParser, OwnedPathParser};
 use crate::session_diagnostics::{
     DocAliasBadChar, DocAliasEmpty, DocAliasMalformed, DocAliasStartEnd, DocAttrNotCrateLevel,
@@ -257,9 +258,7 @@ fn add_alias<S: Stage>(
         if let Some(first_definition) = self.attribute.aliases.get(&alias).copied() {
             cx.emit_dyn_lint(
                 rustc_session::lint::builtin::UNUSED_ATTRIBUTES,
-                move |dcx, level| {
-                    crate::errors::DocAliasDuplicated { first_definition }.into_diag(dcx, level)
-                },
+                move |dcx, level| DocAliasDuplicated { first_definition }.into_diag(dcx, level),
                 span,
             );
         }
@@ -345,9 +344,9 @@ fn parse_auto_cfg<S: Stage>(
             ArgParser::List(list) => {
                 for meta in list.mixed() {
                     let MetaItemOrLitParser::MetaItemParser(item) = meta else {
-                        cx.emit_lint(
+                        cx.emit_dyn_lint(
                             rustc_session::lint::builtin::INVALID_DOC_ATTRIBUTES,
-                            AttributeLintKind::DocAutoCfgExpectsHideOrShow,
+                            |dcx, level| DocAutoCfgExpectsHideOrShow.into_diag(dcx, level),
                             meta.span(),
                         );
                         continue;
@@ -356,9 +355,9 @@ fn parse_auto_cfg<S: Stage>(
                         Some(sym::hide) => (HideOrShow::Hide, sym::hide),
                         Some(sym::show) => (HideOrShow::Show, sym::show),
                         _ => {
-                            cx.emit_lint(
+                            cx.emit_dyn_lint(
                                 rustc_session::lint::builtin::INVALID_DOC_ATTRIBUTES,
-                                AttributeLintKind::DocAutoCfgExpectsHideOrShow,
+                                |dcx, level| DocAutoCfgExpectsHideOrShow.into_diag(dcx, level),
                                 item.span(),
                             );
                             continue;
@@ -671,8 +670,7 @@ fn accept_single_doc_attr<S: Stage>(
                 cx.emit_dyn_lint(
                     rustc_session::lint::builtin::INVALID_DOC_ATTRIBUTES,
                     move |dcx, level| {
-                        crate::errors::IllFormedAttributeInput::new(&suggestions, None, None)
-                            .into_diag(dcx, level)
+                        IllFormedAttributeInput::new(&suggestions, None, None).into_diag(dcx, level)
                     },
                     span,
                 );

compiler/rustc_attr_parsing/src/errors.rs

@@ -173,3 +173,7 @@ pub(crate) struct DocAliasDuplicated {
     #[label("first defined here")]
     pub first_definition: Span,
 }
+
+#[derive(Diagnostic)]
+#[diag("only `hide` or `show` are allowed in `#[doc(auto_cfg(...))]`")]
+pub(crate) struct DocAutoCfgExpectsHideOrShow;

compiler/rustc_lint/src/early/diagnostics.rs

@@ -43,10 +43,6 @@ fn into_diag(self, dcx: DiagCtxtHandle<'a>, level: Level) -> Diag<'a, ()> {
                     .into_diag(dcx, level)
             }
 
-            &AttributeLintKind::DocAutoCfgExpectsHideOrShow => {
-                lints::DocAutoCfgExpectsHideOrShow.into_diag(dcx, level)
-            }
-
             &AttributeLintKind::AmbiguousDeriveHelpers => {
                 lints::AmbiguousDeriveHelpers.into_diag(dcx, level)
             }

compiler/rustc_lint/src/lints.rs

@@ -3303,10 +3303,6 @@ fn add_to_diag<G: EmissionGuarantee>(self, diag: &mut Diag<'_, G>) {
 )]
 pub(crate) struct ExpectedNameValue;
 
-#[derive(Diagnostic)]
-#[diag("only `hide` or `show` are allowed in `#[doc(auto_cfg(...))]`")]
-pub(crate) struct DocAutoCfgExpectsHideOrShow;
-
 #[derive(Diagnostic)]
 #[diag("there exists a built-in attribute with the same name")]
 pub(crate) struct AmbiguousDeriveHelpers;

compiler/rustc_lint_defs/src/lib.rs

@@ -656,7 +656,6 @@ pub enum DeprecatedSinceKind {
 pub enum AttributeLintKind {
     UnexpectedCfgName((Symbol, Span), Option<(Symbol, Span)>),
     UnexpectedCfgValue((Symbol, Span), Option<(Symbol, Span)>),
-    DocAutoCfgExpectsHideOrShow,
     DocAutoCfgHideShowUnexpectedItem { attr_name: Symbol },
     DocAutoCfgHideShowExpectsList { attr_name: Symbol },
     DocInvalid,