Auto merge of #131235 - codemountains:rename-nestedmetaitem-to-metaitemlnner, r=nnethercote

Rename `NestedMetaItem` to `MetaItemInner`

Fixes #131087

r? `@nnethercote`

27 files changed, 114 insertions, 115 deletions

diff --git a/compiler/rustc_ast/src/ast.rs b/compiler/rustc_ast/src/ast.rs
index 733c2d93114..f2b52eea12f 100644
--- a/compiler/rustc_ast/src/ast.rs
+++ b/compiler/rustc_ast/src/ast.rs
@@ -511,7 +511,7 @@ pub enum MetaItemKind {
     /// List meta item.
     ///
     /// E.g., `#[derive(..)]`, where the field represents the `..`.
-    List(ThinVec<NestedMetaItem>),
+    List(ThinVec<MetaItemInner>),
 
     /// Name value meta item.
     ///
@@ -523,7 +523,7 @@ pub enum MetaItemKind {
 ///
 /// E.g., each of `Clone`, `Copy` in `#[derive(Clone, Copy)]`.
 #[derive(Clone, Encodable, Decodable, Debug, HashStable_Generic)]
-pub enum NestedMetaItem {
+pub enum MetaItemInner {
     /// A full MetaItem, for recursive meta items.
     MetaItem(MetaItem),
 
diff --git a/compiler/rustc_ast/src/attr/mod.rs b/compiler/rustc_ast/src/attr/mod.rs
index 338d50cb394..b73412a4b1d 100644
--- a/compiler/rustc_ast/src/attr/mod.rs
+++ b/compiler/rustc_ast/src/attr/mod.rs
@@ -11,7 +11,7 @@ use thin_vec::{ThinVec, thin_vec};
 
 use crate::ast::{
     AttrArgs, AttrArgsEq, AttrId, AttrItem, AttrKind, AttrStyle, AttrVec, Attribute, DUMMY_NODE_ID,
-    DelimArgs, Expr, ExprKind, LitKind, MetaItem, MetaItemKind, MetaItemLit, NestedMetaItem,
+    DelimArgs, Expr, ExprKind, LitKind, MetaItem, MetaItemInner, MetaItemKind, MetaItemLit,
     NormalAttr, Path, PathSegment, Safety,
 };
 use crate::ptr::P;
@@ -136,7 +136,7 @@ impl Attribute {
         }
     }
 
-    pub fn meta_item_list(&self) -> Option<ThinVec<NestedMetaItem>> {
+    pub fn meta_item_list(&self) -> Option<ThinVec<MetaItemInner>> {
         match &self.kind {
             AttrKind::Normal(normal) => normal.item.meta_item_list(),
             AttrKind::DocComment(..) => None,
@@ -223,7 +223,7 @@ impl AttrItem {
         self.args.span().map_or(self.path.span, |args_span| self.path.span.to(args_span))
     }
 
-    fn meta_item_list(&self) -> Option<ThinVec<NestedMetaItem>> {
+    fn meta_item_list(&self) -> Option<ThinVec<MetaItemInner>> {
         match &self.args {
             AttrArgs::Delimited(args) if args.delim == Delimiter::Parenthesis => {
                 MetaItemKind::list_from_tokens(args.tokens.clone())
@@ -285,7 +285,7 @@ impl MetaItem {
         matches!(self.kind, MetaItemKind::Word)
     }
 
-    pub fn meta_item_list(&self) -> Option<&[NestedMetaItem]> {
+    pub fn meta_item_list(&self) -> Option<&[MetaItemInner]> {
         match &self.kind {
             MetaItemKind::List(l) => Some(&**l),
             _ => None,
@@ -393,11 +393,11 @@ impl MetaItem {
 }
 
 impl MetaItemKind {
-    fn list_from_tokens(tokens: TokenStream) -> Option<ThinVec<NestedMetaItem>> {
+    fn list_from_tokens(tokens: TokenStream) -> Option<ThinVec<MetaItemInner>> {
         let mut tokens = tokens.trees().peekable();
         let mut result = ThinVec::new();
         while tokens.peek().is_some() {
-            let item = NestedMetaItem::from_tokens(&mut tokens)?;
+            let item = MetaItemInner::from_tokens(&mut tokens)?;
             result.push(item);
             match tokens.next() {
                 None | Some(TokenTree::Token(Token { kind: token::Comma, .. }, _)) => {}
@@ -460,11 +460,11 @@ impl MetaItemKind {
     }
 }
 
-impl NestedMetaItem {
+impl MetaItemInner {
     pub fn span(&self) -> Span {
         match self {
-            NestedMetaItem::MetaItem(item) => item.span,
-            NestedMetaItem::Lit(lit) => lit.span,
+            MetaItemInner::MetaItem(item) => item.span,
+            MetaItemInner::Lit(lit) => lit.span,
         }
     }
 
@@ -488,7 +488,7 @@ impl NestedMetaItem {
     }
 
     /// Gets a list of inner meta items from a list `MetaItem` type.
-    pub fn meta_item_list(&self) -> Option<&[NestedMetaItem]> {
+    pub fn meta_item_list(&self) -> Option<&[MetaItemInner]> {
         self.meta_item().and_then(|meta_item| meta_item.meta_item_list())
     }
 
@@ -519,28 +519,28 @@ impl NestedMetaItem {
         self.meta_item().and_then(|meta_item| meta_item.value_str())
     }
 
-    /// Returns the `MetaItemLit` if `self` is a `NestedMetaItem::Literal`s.
+    /// Returns the `MetaItemLit` if `self` is a `MetaItemInner::Literal`s.
     pub fn lit(&self) -> Option<&MetaItemLit> {
         match self {
-            NestedMetaItem::Lit(lit) => Some(lit),
+            MetaItemInner::Lit(lit) => Some(lit),
             _ => None,
         }
     }
 
-    /// Returns the `MetaItem` if `self` is a `NestedMetaItem::MetaItem` or if it's
-    /// `NestedMetaItem::Lit(MetaItemLit { kind: LitKind::Bool(_), .. })`.
-    pub fn meta_item_or_bool(&self) -> Option<&NestedMetaItem> {
+    /// Returns the `MetaItem` if `self` is a `MetaItemInner::MetaItem` or if it's
+    /// `MetaItemInner::Lit(MetaItemLit { kind: LitKind::Bool(_), .. })`.
+    pub fn meta_item_or_bool(&self) -> Option<&MetaItemInner> {
         match self {
-            NestedMetaItem::MetaItem(_item) => Some(self),
-            NestedMetaItem::Lit(MetaItemLit { kind: LitKind::Bool(_), .. }) => Some(self),
+            MetaItemInner::MetaItem(_item) => Some(self),
+            MetaItemInner::Lit(MetaItemLit { kind: LitKind::Bool(_), .. }) => Some(self),
             _ => None,
         }
     }
 
-    /// Returns the `MetaItem` if `self` is a `NestedMetaItem::MetaItem`.
+    /// Returns the `MetaItem` if `self` is a `MetaItemInner::MetaItem`.
     pub fn meta_item(&self) -> Option<&MetaItem> {
         match self {
-            NestedMetaItem::MetaItem(item) => Some(item),
+            MetaItemInner::MetaItem(item) => Some(item),
             _ => None,
         }
     }
@@ -550,22 +550,22 @@ impl NestedMetaItem {
         self.meta_item().is_some()
     }
 
-    fn from_tokens<'a, I>(tokens: &mut iter::Peekable<I>) -> Option<NestedMetaItem>
+    fn from_tokens<'a, I>(tokens: &mut iter::Peekable<I>) -> Option<MetaItemInner>
     where
         I: Iterator<Item = &'a TokenTree>,
     {
         match tokens.peek() {
             Some(TokenTree::Token(token, _)) if let Some(lit) = MetaItemLit::from_token(token) => {
                 tokens.next();
-                return Some(NestedMetaItem::Lit(lit));
+                return Some(MetaItemInner::Lit(lit));
             }
             Some(TokenTree::Delimited(.., Delimiter::Invisible, inner_tokens)) => {
                 tokens.next();
-                return NestedMetaItem::from_tokens(&mut inner_tokens.trees().peekable());
+                return MetaItemInner::from_tokens(&mut inner_tokens.trees().peekable());
             }
             _ => {}
         }
-        MetaItem::from_tokens(tokens).map(NestedMetaItem::MetaItem)
+        MetaItem::from_tokens(tokens).map(MetaItemInner::MetaItem)
     }
 }
 
@@ -676,6 +676,6 @@ pub fn contains_name(attrs: &[Attribute], name: Symbol) -> bool {
     find_by_name(attrs, name).is_some()
 }
 
-pub fn list_contains_name(items: &[NestedMetaItem], name: Symbol) -> bool {
+pub fn list_contains_name(items: &[MetaItemInner], name: Symbol) -> bool {
     items.iter().any(|item| item.has_name(name))
 }
diff --git a/compiler/rustc_ast/src/mut_visit.rs b/compiler/rustc_ast/src/mut_visit.rs
index 104f84f26e0..6ce23a1479d 100644
--- a/compiler/rustc_ast/src/mut_visit.rs
+++ b/compiler/rustc_ast/src/mut_visit.rs
@@ -83,7 +83,7 @@ pub trait MutVisitor: Sized {
         walk_crate(self, c)
     }
 
-    fn visit_meta_list_item(&mut self, list_item: &mut NestedMetaItem) {
+    fn visit_meta_list_item(&mut self, list_item: &mut MetaItemInner) {
         walk_meta_list_item(self, list_item);
     }
 
@@ -659,10 +659,10 @@ fn walk_macro_def<T: MutVisitor>(vis: &mut T, macro_def: &mut MacroDef) {
     visit_delim_args(vis, body);
 }
 
-fn walk_meta_list_item<T: MutVisitor>(vis: &mut T, li: &mut NestedMetaItem) {
+fn walk_meta_list_item<T: MutVisitor>(vis: &mut T, li: &mut MetaItemInner) {
     match li {
-        NestedMetaItem::MetaItem(mi) => vis.visit_meta_item(mi),
-        NestedMetaItem::Lit(_lit) => {}
+        MetaItemInner::MetaItem(mi) => vis.visit_meta_item(mi),
+        MetaItemInner::Lit(_lit) => {}
     }
 }
 
diff --git a/compiler/rustc_ast_passes/src/feature_gate.rs b/compiler/rustc_ast_passes/src/feature_gate.rs
index 83931a8c1a9..42d1ef5c558 100644
--- a/compiler/rustc_ast_passes/src/feature_gate.rs
+++ b/compiler/rustc_ast_passes/src/feature_gate.rs
@@ -186,9 +186,9 @@ impl<'a> Visitor<'a> for PostExpansionVisitor<'a> {
         }
         // Check unstable flavors of the `#[doc]` attribute.
         if attr.has_name(sym::doc) {
-            for nested_meta in attr.meta_item_list().unwrap_or_default() {
+            for meta_item_inner in attr.meta_item_list().unwrap_or_default() {
                 macro_rules! gate_doc { ($($s:literal { $($name:ident => $feature:ident)* })*) => {
-                    $($(if nested_meta.has_name(sym::$name) {
+                    $($(if meta_item_inner.has_name(sym::$name) {
                         let msg = concat!("`#[doc(", stringify!($name), ")]` is ", $s);
                         gate!(self, $feature, attr.span, msg);
                     })*)*
diff --git a/compiler/rustc_ast_pretty/src/pprust/mod.rs b/compiler/rustc_ast_pretty/src/pprust/mod.rs
index 726ceebe3c5..97cb6e52d56 100644
--- a/compiler/rustc_ast_pretty/src/pprust/mod.rs
+++ b/compiler/rustc_ast_pretty/src/pprust/mod.rs
@@ -67,7 +67,7 @@ pub fn vis_to_string(v: &ast::Visibility) -> String {
     State::new().vis_to_string(v)
 }
 
-pub fn meta_list_item_to_string(li: &ast::NestedMetaItem) -> String {
+pub fn meta_list_item_to_string(li: &ast::MetaItemInner) -> String {
     State::new().meta_list_item_to_string(li)
 }
 
diff --git a/compiler/rustc_ast_pretty/src/pprust/state.rs b/compiler/rustc_ast_pretty/src/pprust/state.rs
index 7e07ccf28a0..884cc413bd5 100644
--- a/compiler/rustc_ast_pretty/src/pprust/state.rs
+++ b/compiler/rustc_ast_pretty/src/pprust/state.rs
@@ -2006,10 +2006,10 @@ impl<'a> State<'a> {
         self.print_attribute_inline(attr, false)
     }
 
-    fn print_meta_list_item(&mut self, item: &ast::NestedMetaItem) {
+    fn print_meta_list_item(&mut self, item: &ast::MetaItemInner) {
         match item {
-            ast::NestedMetaItem::MetaItem(mi) => self.print_meta_item(mi),
-            ast::NestedMetaItem::Lit(lit) => self.print_meta_item_lit(lit),
+            ast::MetaItemInner::MetaItem(mi) => self.print_meta_item(mi),
+            ast::MetaItemInner::Lit(lit) => self.print_meta_item_lit(lit),
         }
     }
 
@@ -2054,7 +2054,7 @@ impl<'a> State<'a> {
         Self::to_string(|s| s.print_path_segment(p, false))
     }
 
-    pub(crate) fn meta_list_item_to_string(&self, li: &ast::NestedMetaItem) -> String {
+    pub(crate) fn meta_list_item_to_string(&self, li: &ast::MetaItemInner) -> String {
         Self::to_string(|s| s.print_meta_list_item(li))
     }
 
diff --git a/compiler/rustc_attr/src/builtin.rs b/compiler/rustc_attr/src/builtin.rs
index d6a7dbad12d..c1db4d07dfc 100644
--- a/compiler/rustc_attr/src/builtin.rs
+++ b/compiler/rustc_attr/src/builtin.rs
@@ -4,7 +4,7 @@ use std::num::NonZero;
 
 use rustc_abi::Align;
 use rustc_ast::{
-    self as ast, Attribute, LitKind, MetaItem, MetaItemKind, MetaItemLit, NestedMetaItem, NodeId,
+    self as ast, Attribute, LitKind, MetaItem, MetaItemInner, MetaItemKind, MetaItemLit, NodeId,
     attr,
 };
 use rustc_ast_pretty::pprust;
@@ -534,7 +534,7 @@ pub struct Condition {
 
 /// Tests if a cfg-pattern matches the cfg set
 pub fn cfg_matches(
-    cfg: &ast::NestedMetaItem,
+    cfg: &ast::MetaItemInner,
     sess: &Session,
     lint_node_id: NodeId,
     features: Option<&Features>,
@@ -605,7 +605,7 @@ pub fn parse_version(s: Symbol) -> Option<RustcVersion> {
 /// Evaluate a cfg-like condition (with `any` and `all`), using `eval` to
 /// evaluate individual items.
 pub fn eval_condition(
-    cfg: &ast::NestedMetaItem,
+    cfg: &ast::MetaItemInner,
     sess: &Session,
     features: Option<&Features>,
     eval: &mut impl FnMut(Condition) -> bool,
@@ -613,8 +613,8 @@ pub fn eval_condition(
     let dcx = sess.dcx();
 
     let cfg = match cfg {
-        ast::NestedMetaItem::MetaItem(meta_item) => meta_item,
-        ast::NestedMetaItem::Lit(MetaItemLit { kind: LitKind::Bool(b), .. }) => {
+        ast::MetaItemInner::MetaItem(meta_item) => meta_item,
+        ast::MetaItemInner::Lit(MetaItemLit { kind: LitKind::Bool(b), .. }) => {
             if let Some(features) = features {
                 // we can't use `try_gate_cfg` as symbols don't differentiate between `r#true`
                 // and `true`, and we want to keep the former working without feature gate
@@ -646,12 +646,12 @@ pub fn eval_condition(
         ast::MetaItemKind::List(mis) if cfg.name_or_empty() == sym::version => {
             try_gate_cfg(sym::version, cfg.span, sess, features);
             let (min_version, span) = match &mis[..] {
-                [NestedMetaItem::Lit(MetaItemLit { kind: LitKind::Str(sym, ..), span, .. })] => {
+                [MetaItemInner::Lit(MetaItemLit { kind: LitKind::Str(sym, ..), span, .. })] => {
                     (sym, span)
                 }
                 [
-                    NestedMetaItem::Lit(MetaItemLit { span, .. })
-                    | NestedMetaItem::MetaItem(MetaItem { span, .. }),
+                    MetaItemInner::Lit(MetaItemLit { span, .. })
+                    | MetaItemInner::MetaItem(MetaItem { span, .. }),
                 ] => {
                     dcx.emit_err(session_diagnostics::ExpectedVersionLiteral { span: *span });
                     return false;
@@ -729,7 +729,7 @@ pub fn eval_condition(
                         }
 
                         res & eval_condition(
-                            &ast::NestedMetaItem::MetaItem(mi),
+                            &ast::MetaItemInner::MetaItem(mi),
                             sess,
                             features,
                             eval,
@@ -873,7 +873,7 @@ pub fn find_deprecation(
 
                 for meta in list {
                     match meta {
-                        NestedMetaItem::MetaItem(mi) => match mi.name_or_empty() {
+                        MetaItemInner::MetaItem(mi) => match mi.name_or_empty() {
                             sym::since => {
                                 if !get(mi, &mut since) {
                                     continue 'outer;
@@ -912,7 +912,7 @@ pub fn find_deprecation(
                                 continue 'outer;
                             }
                         },
-                        NestedMetaItem::Lit(lit) => {
+                        MetaItemInner::Lit(lit) => {
                             sess.dcx().emit_err(session_diagnostics::UnsupportedLiteral {
                                 span: lit.span,
                                 reason: UnsupportedLiteralReason::DeprecatedKvPair,
@@ -1277,7 +1277,7 @@ pub fn parse_confusables(attr: &Attribute) -> Option<Vec<Symbol>> {
     let mut candidates = Vec::new();
 
     for meta in metas {
-        let NestedMetaItem::Lit(meta_lit) = meta else {
+        let MetaItemInner::Lit(meta_lit) = meta else {
             return None;
         };
         candidates.push(meta_lit.symbol);
diff --git a/compiler/rustc_builtin_macros/src/cfg.rs b/compiler/rustc_builtin_macros/src/cfg.rs
index 940c94b1cfc..15993dbf5ec 100644
--- a/compiler/rustc_builtin_macros/src/cfg.rs
+++ b/compiler/rustc_builtin_macros/src/cfg.rs
@@ -39,7 +39,7 @@ fn parse_cfg<'a>(
     cx: &ExtCtxt<'a>,
     span: Span,
     tts: TokenStream,
-) -> PResult<'a, ast::NestedMetaItem> {
+) -> PResult<'a, ast::MetaItemInner> {
     let mut p = cx.new_parser_from_tts(tts);
 
     if p.token == token::Eof {
diff --git a/compiler/rustc_builtin_macros/src/derive.rs b/compiler/rustc_builtin_macros/src/derive.rs
index 4be2d209ae7..60450d085f6 100644
--- a/compiler/rustc_builtin_macros/src/derive.rs
+++ b/compiler/rustc_builtin_macros/src/derive.rs
@@ -1,5 +1,5 @@
 use rustc_ast as ast;
-use rustc_ast::{GenericParamKind, ItemKind, MetaItemKind, NestedMetaItem, StmtKind};
+use rustc_ast::{GenericParamKind, ItemKind, MetaItemInner, MetaItemKind, StmtKind};
 use rustc_expand::base::{
     Annotatable, DeriveResolution, ExpandResult, ExtCtxt, Indeterminate, MultiItemModifier,
 };
@@ -49,9 +49,9 @@ impl MultiItemModifier for Expander {
                 let mut resolutions = match &meta_item.kind {
                     MetaItemKind::List(list) => {
                         list.iter()
-                            .filter_map(|nested_meta| match nested_meta {
-                                NestedMetaItem::MetaItem(meta) => Some(meta),
-                                NestedMetaItem::Lit(lit) => {
+                            .filter_map(|meta_item_inner| match meta_item_inner {
+                                MetaItemInner::MetaItem(meta) => Some(meta),
+                                MetaItemInner::Lit(lit) => {
                                     // Reject `#[derive("Debug")]`.
                                     report_unexpected_meta_item_lit(sess, lit);
                                     None
diff --git a/compiler/rustc_codegen_ssa/src/codegen_attrs.rs b/compiler/rustc_codegen_ssa/src/codegen_attrs.rs
index e99c3a46271..8d634ca4655 100644
--- a/compiler/rustc_codegen_ssa/src/codegen_attrs.rs
+++ b/compiler/rustc_codegen_ssa/src/codegen_attrs.rs
@@ -1,4 +1,4 @@
-use rustc_ast::{MetaItemKind, NestedMetaItem, ast, attr};
+use rustc_ast::{MetaItemInner, MetaItemKind, ast, attr};
 use rustc_attr::{InlineAttr, InstructionSetAttr, OptimizeAttr, list_contains_name};
 use rustc_errors::codes::*;
 use rustc_errors::{DiagMessage, SubdiagMessage, struct_span_code_err};
@@ -357,7 +357,7 @@ fn codegen_fn_attrs(tcx: TyCtxt<'_>, did: LocalDefId) -> CodegenFnAttrs {
             sym::instruction_set => {
                 codegen_fn_attrs.instruction_set =
                     attr.meta_item_list().and_then(|l| match &l[..] {
-                        [NestedMetaItem::MetaItem(set)] => {
+                        [MetaItemInner::MetaItem(set)] => {
                             let segments =
                                 set.path.segments.iter().map(|x| x.ident.name).collect::<Vec<_>>();
                             match segments.as_slice() {
diff --git a/compiler/rustc_codegen_ssa/src/lib.rs b/compiler/rustc_codegen_ssa/src/lib.rs
index 3129b9ac203..cbd95146294 100644
--- a/compiler/rustc_codegen_ssa/src/lib.rs
+++ b/compiler/rustc_codegen_ssa/src/lib.rs
@@ -156,7 +156,7 @@ pub struct NativeLib {
     pub kind: NativeLibKind,
     pub name: Symbol,
     pub filename: Option<Symbol>,
-    pub cfg: Option<ast::NestedMetaItem>,
+    pub cfg: Option<ast::MetaItemInner>,
     pub verbatim: bool,
     pub dll_imports: Vec<cstore::DllImport>,
 }
diff --git a/compiler/rustc_expand/src/base.rs b/compiler/rustc_expand/src/base.rs
index d0552a754fe..f0cfe133a49 100644
--- a/compiler/rustc_expand/src/base.rs
+++ b/compiler/rustc_expand/src/base.rs
@@ -29,7 +29,7 @@ use rustc_span::{DUMMY_SP, FileName, Span};
 use smallvec::{SmallVec, smallvec};
 use thin_vec::ThinVec;
 
-use crate::base::ast::NestedMetaItem;
+use crate::base::ast::MetaItemInner;
 use crate::errors;
 use crate::expand::{self, AstFragment, Invocation};
 use crate::module::DirOwnership;
@@ -783,7 +783,7 @@ impl SyntaxExtension {
 
     fn collapse_debuginfo_by_name(attr: &Attribute) -> Result<CollapseMacroDebuginfo, Span> {
         let list = attr.meta_item_list();
-        let Some([NestedMetaItem::MetaItem(item)]) = list.as_deref() else {
+        let Some([MetaItemInner::MetaItem(item)]) = list.as_deref() else {
             return Err(attr.span);
         };
         if !item.is_word() {
diff --git a/compiler/rustc_expand/src/config.rs b/compiler/rustc_expand/src/config.rs
index 21dbc251b06..ea06415801f 100644
--- a/compiler/rustc_expand/src/config.rs
+++ b/compiler/rustc_expand/src/config.rs
@@ -6,7 +6,7 @@ use rustc_ast::tokenstream::{
     AttrTokenStream, AttrTokenTree, LazyAttrTokenStream, Spacing, TokenTree,
 };
 use rustc_ast::{
-    self as ast, AttrStyle, Attribute, HasAttrs, HasTokens, MetaItem, NestedMetaItem, NodeId,
+    self as ast, AttrStyle, Attribute, HasAttrs, HasTokens, MetaItem, MetaItemInner, NodeId,
 };
 use rustc_attr as attr;
 use rustc_data_structures::flat_map_in_place::FlatMapInPlace;
@@ -40,7 +40,7 @@ pub struct StripUnconfigured<'a> {
 }
 
 pub fn features(sess: &Session, krate_attrs: &[Attribute], crate_name: Symbol) -> Features {
-    fn feature_list(attr: &Attribute) -> ThinVec<ast::NestedMetaItem> {
+    fn feature_list(attr: &Attribute) -> ThinVec<ast::MetaItemInner> {
         if attr.has_name(sym::feature)
             && let Some(list) = attr.meta_item_list()
         {
@@ -442,7 +442,7 @@ impl<'a> StripUnconfigured<'a> {
     }
 }
 
-pub fn parse_cfg<'a>(meta_item: &'a MetaItem, sess: &Session) -> Option<&'a NestedMetaItem> {
+pub fn parse_cfg<'a>(meta_item: &'a MetaItem, sess: &Session) -> Option<&'a MetaItemInner> {
     let span = meta_item.span;
     match meta_item.meta_item_list() {
         None => {
diff --git a/compiler/rustc_expand/src/expand.rs b/compiler/rustc_expand/src/expand.rs
index 079dcee99d3..a872b12e744 100644
--- a/compiler/rustc_expand/src/expand.rs
+++ b/compiler/rustc_expand/src/expand.rs
@@ -11,7 +11,7 @@ use rustc_ast::tokenstream::TokenStream;
 use rustc_ast::visit::{self, AssocCtxt, Visitor, VisitorResult, try_visit, walk_list};
 use rustc_ast::{
     AssocItemKind, AstNodeWrapper, AttrArgs, AttrStyle, AttrVec, ExprKind, ForeignItemKind,
-    HasAttrs, HasNodeId, Inline, ItemKind, MacStmtStyle, MetaItemKind, ModKind, NestedMetaItem,
+    HasAttrs, HasNodeId, Inline, ItemKind, MacStmtStyle, MetaItemInner, MetaItemKind, ModKind,
     NodeId, PatKind, StmtKind, TyKind,
 };
 use rustc_ast_pretty::pprust;
@@ -1863,8 +1863,8 @@ impl<'a, 'b> InvocationCollector<'a, 'b> {
                         .iter()
                         .filter(|a| a.has_name(sym::derive))
                         .flat_map(|a| a.meta_item_list().unwrap_or_default())
-                        .filter_map(|nested_meta| match nested_meta {
-                            NestedMetaItem::MetaItem(ast::MetaItem {
+                        .filter_map(|meta_item_inner| match meta_item_inner {
+                            MetaItemInner::MetaItem(ast::MetaItem {
                                 kind: MetaItemKind::Word,
                                 path,
                                 ..
diff --git a/compiler/rustc_incremental/src/persist/dirty_clean.rs b/compiler/rustc_incremental/src/persist/dirty_clean.rs
index 9dc5cbaafce..d25fe4219b5 100644
--- a/compiler/rustc_incremental/src/persist/dirty_clean.rs
+++ b/compiler/rustc_incremental/src/persist/dirty_clean.rs
@@ -19,7 +19,7 @@
 //! Errors are reported if we are in the suitable configuration but
 //! the required condition is not met.
 
-use rustc_ast::{self as ast, Attribute, NestedMetaItem};
+use rustc_ast::{self as ast, Attribute, MetaItemInner};
 use rustc_data_structures::fx::FxHashSet;
 use rustc_data_structures::unord::UnordSet;
 use rustc_hir::def_id::LocalDefId;
@@ -307,7 +307,7 @@ impl<'tcx> DirtyCleanVisitor<'tcx> {
         (name, labels)
     }
 
-    fn resolve_labels(&self, item: &NestedMetaItem, value: Symbol) -> Labels {
+    fn resolve_labels(&self, item: &MetaItemInner, value: Symbol) -> Labels {
         let mut out = Labels::default();
         for label in value.as_str().split(',') {
             let label = label.trim();
@@ -415,7 +415,7 @@ fn check_config(tcx: TyCtxt<'_>, attr: &Attribute) -> bool {
     }
 }
 
-fn expect_associated_value(tcx: TyCtxt<'_>, item: &NestedMetaItem) -> Symbol {
+fn expect_associated_value(tcx: TyCtxt<'_>, item: &MetaItemInner) -> Symbol {
     if let Some(value) = item.value_str() {
         value
     } else if let Some(ident) = item.ident() {
diff --git a/compiler/rustc_lint/src/levels.rs b/compiler/rustc_lint/src/levels.rs
index 007e86ae0d2..89a67fc0d89 100644
--- a/compiler/rustc_lint/src/levels.rs
+++ b/compiler/rustc_lint/src/levels.rs
@@ -669,7 +669,7 @@ impl<'s, P: LintLevelsProvider> LintLevelsBuilder<'s, P> {
 
                 let sp = li.span();
                 let meta_item = match li {
-                    ast::NestedMetaItem::MetaItem(meta_item) if meta_item.is_word() => meta_item,
+                    ast::MetaItemInner::MetaItem(meta_item) if meta_item.is_word() => meta_item,
                     _ => {
                         let sub = if let Some(item) = li.meta_item()
                             && let ast::MetaItemKind::NameValue(_) = item.kind
diff --git a/compiler/rustc_middle/src/ty/context.rs b/compiler/rustc_middle/src/ty/context.rs
index 27c1b88f93f..4a02fce5e7d 100644
--- a/compiler/rustc_middle/src/ty/context.rs
+++ b/compiler/rustc_middle/src/ty/context.rs
@@ -1451,9 +1451,8 @@ impl<'tcx> TyCtxt<'tcx> {
             debug!("layout_scalar_valid_range: attr={:?}", attr);
             if let Some(
                 &[
-                    ast::NestedMetaItem::Lit(ast::MetaItemLit {
-                        kind: ast::LitKind::Int(a, _),
-                        ..
+                    ast::MetaItemInner::Lit(ast::MetaItemLit {
+                        kind: ast::LitKind::Int(a, _), ..
                     }),
                 ],
             ) = attr.meta_item_list().as_deref()
diff --git a/compiler/rustc_mir_dataflow/src/framework/engine.rs b/compiler/rustc_mir_dataflow/src/framework/engine.rs
index faf5c610a0c..9d50e57d668 100644
--- a/compiler/rustc_mir_dataflow/src/framework/engine.rs
+++ b/compiler/rustc_mir_dataflow/src/framework/engine.rs
@@ -367,7 +367,7 @@ impl RustcMirAttrs {
     fn set_field<T>(
         field: &mut Option<T>,
         tcx: TyCtxt<'_>,
-        attr: &ast::NestedMetaItem,
+        attr: &ast::MetaItemInner,
         mapper: impl FnOnce(Symbol) -> Result<T, ()>,
     ) -> Result<(), ()> {
         if field.is_some() {
diff --git a/compiler/rustc_parse/src/lib.rs b/compiler/rustc_parse/src/lib.rs
index da02f98d0e5..2792050a0b3 100644
--- a/compiler/rustc_parse/src/lib.rs
+++ b/compiler/rustc_parse/src/lib.rs
@@ -18,7 +18,7 @@ use std::path::Path;
 
 use rustc_ast as ast;
 use rustc_ast::tokenstream::TokenStream;
-use rustc_ast::{AttrItem, Attribute, NestedMetaItem, token};
+use rustc_ast::{AttrItem, Attribute, MetaItemInner, token};
 use rustc_ast_pretty::pprust;
 use rustc_data_structures::sync::Lrc;
 use rustc_errors::{Diag, FatalError, PResult};
@@ -160,7 +160,7 @@ pub fn fake_token_stream_for_crate(psess: &ParseSess, krate: &ast::Crate) -> Tok
 pub fn parse_cfg_attr(
     cfg_attr: &Attribute,
     psess: &ParseSess,
-) -> Option<(NestedMetaItem, Vec<(AttrItem, Span)>)> {
+) -> Option<(MetaItemInner, Vec<(AttrItem, Span)>)> {
     const CFG_ATTR_GRAMMAR_HELP: &str = "#[cfg_attr(condition, attribute, other_attribute, ...)]";
     const CFG_ATTR_NOTE_REF: &str = "for more information, visit \
         <https://doc.rust-lang.org/reference/conditional-compilation.html#the-cfg_attr-attribute>";
diff --git a/compiler/rustc_parse/src/parser/attr.rs b/compiler/rustc_parse/src/parser/attr.rs
index 4aa56cb7624..b6fa2099588 100644
--- a/compiler/rustc_parse/src/parser/attr.rs
+++ b/compiler/rustc_parse/src/parser/attr.rs
@@ -358,7 +358,7 @@ impl<'a> Parser<'a> {
     /// Parses `cfg_attr(pred, attr_item_list)` where `attr_item_list` is comma-delimited.
     pub fn parse_cfg_attr(
         &mut self,
-    ) -> PResult<'a, (ast::NestedMetaItem, Vec<(ast::AttrItem, Span)>)> {
+    ) -> PResult<'a, (ast::MetaItemInner, Vec<(ast::AttrItem, Span)>)> {
         let cfg_predicate = self.parse_meta_item_inner()?;
         self.expect(&token::Comma)?;
 
@@ -377,7 +377,7 @@ impl<'a> Parser<'a> {
     }
 
     /// Matches `COMMASEP(meta_item_inner)`.
-    pub(crate) fn parse_meta_seq_top(&mut self) -> PResult<'a, ThinVec<ast::NestedMetaItem>> {
+    pub(crate) fn parse_meta_seq_top(&mut self) -> PResult<'a, ThinVec<ast::MetaItemInner>> {
         // Presumably, the majority of the time there will only be one attr.
         let mut nmis = ThinVec::with_capacity(1);
         while self.token != token::Eof {
@@ -454,14 +454,14 @@ impl<'a> Parser<'a> {
     /// ```ebnf
     /// MetaItemInner = UNSUFFIXED_LIT | MetaItem ;
     /// ```
-    pub fn parse_meta_item_inner(&mut self) -> PResult<'a, ast::NestedMetaItem> {
+    pub fn parse_meta_item_inner(&mut self) -> PResult<'a, ast::MetaItemInner> {
         match self.parse_unsuffixed_meta_item_lit() {
-            Ok(lit) => return Ok(ast::NestedMetaItem::Lit(lit)),
+            Ok(lit) => return Ok(ast::MetaItemInner::Lit(lit)),
             Err(err) => err.cancel(), // we provide a better error below
         }
 
         match self.parse_meta_item(AllowLeadingUnsafe::No) {
-            Ok(mi) => return Ok(ast::NestedMetaItem::MetaItem(mi)),
+            Ok(mi) => return Ok(ast::MetaItemInner::MetaItem(mi)),
             Err(err) => err.cancel(), // we provide a better error below
         }
 
diff --git a/compiler/rustc_parse/src/validate_attr.rs b/compiler/rustc_parse/src/validate_attr.rs
index b15d1edf79c..f3174e7dea2 100644
--- a/compiler/rustc_parse/src/validate_attr.rs
+++ b/compiler/rustc_parse/src/validate_attr.rs
@@ -3,8 +3,8 @@
 use rustc_ast::token::Delimiter;
 use rustc_ast::tokenstream::DelimSpan;
 use rustc_ast::{
-    self as ast, AttrArgs, AttrArgsEq, Attribute, DelimArgs, MetaItem, MetaItemKind,
-    NestedMetaItem, Safety,
+    self as ast, AttrArgs, AttrArgsEq, Attribute, DelimArgs, MetaItem, MetaItemInner, MetaItemKind,
+    Safety,
 };
 use rustc_errors::{Applicability, FatalError, PResult};
 use rustc_feature::{AttributeSafety, AttributeTemplate, BUILTIN_ATTRIBUTE_MAP, BuiltinAttribute};
@@ -143,7 +143,7 @@ pub(super) fn check_cfg_attr_bad_delim(psess: &ParseSess, span: DelimSpan, delim
 
 /// Checks that the given meta-item is compatible with this `AttributeTemplate`.
 fn is_attr_template_compatible(template: &AttributeTemplate, meta: &ast::MetaItemKind) -> bool {
-    let is_one_allowed_subword = |items: &[NestedMetaItem]| match items {
+    let is_one_allowed_subword = |items: &[MetaItemInner]| match items {
         [item] => item.is_word() && template.one_of.iter().any(|&word| item.has_name(word)),
         _ => false,
     };
diff --git a/compiler/rustc_passes/src/check_attr.rs b/compiler/rustc_passes/src/check_attr.rs
index b3334bb70aa..44a62383e6e 100644
--- a/compiler/rustc_passes/src/check_attr.rs
+++ b/compiler/rustc_passes/src/check_attr.rs
@@ -8,7 +8,7 @@ use std::cell::Cell;
 use std::collections::hash_map::Entry;
 
 use rustc_ast::{
-    AttrKind, AttrStyle, Attribute, LitKind, MetaItemKind, MetaItemLit, NestedMetaItem, ast,
+    AttrKind, AttrStyle, Attribute, LitKind, MetaItemInner, MetaItemKind, MetaItemLit, ast,
 };
 use rustc_data_structures::fx::FxHashMap;
 use rustc_errors::{Applicability, DiagCtxtHandle, IntoDiagArg, MultiSpan, StashKey};
@@ -742,13 +742,13 @@ impl<'tcx> CheckAttrVisitor<'tcx> {
         }
     }
 
-    fn doc_attr_str_error(&self, meta: &NestedMetaItem, attr_name: &str) {
+    fn doc_attr_str_error(&self, meta: &MetaItemInner, attr_name: &str) {
         self.dcx().emit_err(errors::DocExpectStr { attr_span: meta.span(), attr_name });
     }
 
     fn check_doc_alias_value(
         &self,
-        meta: &NestedMetaItem,
+        meta: &MetaItemInner,
         doc_alias: Symbol,
         hir_id: HirId,
         target: Target,
@@ -850,7 +850,7 @@ impl<'tcx> CheckAttrVisitor<'tcx> {
 
     fn check_doc_alias(
         &self,
-        meta: &NestedMetaItem,
+        meta: &MetaItemInner,
         hir_id: HirId,
         target: Target,
         aliases: &mut FxHashMap<String, Span>,
@@ -882,7 +882,7 @@ impl<'tcx> CheckAttrVisitor<'tcx> {
         }
     }
 
-    fn check_doc_keyword(&self, meta: &NestedMetaItem, hir_id: HirId) {
+    fn check_doc_keyword(&self, meta: &MetaItemInner, hir_id: HirId) {
         let doc_keyword = meta.value_str().unwrap_or(kw::Empty);
         if doc_keyword == kw::Empty {
             self.doc_attr_str_error(meta, "keyword");
@@ -912,7 +912,7 @@ impl<'tcx> CheckAttrVisitor<'tcx> {
         }
     }
 
-    fn check_doc_fake_variadic(&self, meta: &NestedMetaItem, hir_id: HirId) {
+    fn check_doc_fake_variadic(&self, meta: &MetaItemInner, hir_id: HirId) {
         let item_kind = match self.tcx.hir_node(hir_id) {
             hir::Node::Item(item) => Some(&item.kind),
             _ => None,
@@ -957,7 +957,7 @@ impl<'tcx> CheckAttrVisitor<'tcx> {
     fn check_doc_inline(
         &self,
         attr: &Attribute,
-        meta: &NestedMetaItem,
+        meta: &MetaItemInner,
         hir_id: HirId,
         target: Target,
         specified_inline: &mut Option<(bool, Span)>,
@@ -997,7 +997,7 @@ impl<'tcx> CheckAttrVisitor<'tcx> {
     fn check_doc_masked(
         &self,
         attr: &Attribute,
-        meta: &NestedMetaItem,
+        meta: &MetaItemInner,
         hir_id: HirId,
         target: Target,
     ) {
@@ -1032,7 +1032,7 @@ impl<'tcx> CheckAttrVisitor<'tcx> {
     /// Checks that an attribute is *not* used at the crate level. Returns `true` if valid.
     fn check_attr_not_crate_level(
         &self,
-        meta: &NestedMetaItem,
+        meta: &MetaItemInner,
         hir_id: HirId,
         attr_name: &str,
     ) -> bool {
@@ -1047,7 +1047,7 @@ impl<'tcx> CheckAttrVisitor<'tcx> {
     fn check_attr_crate_level(
         &self,
         attr: &Attribute,
-        meta: &NestedMetaItem,
+        meta: &MetaItemInner,
         hir_id: HirId,
     ) -> bool {
         if hir_id != CRATE_HIR_ID {
@@ -1071,7 +1071,7 @@ impl<'tcx> CheckAttrVisitor<'tcx> {
 
     /// Checks that `doc(test(...))` attribute contains only valid attributes. Returns `true` if
     /// valid.
-    fn check_test_attr(&self, meta: &NestedMetaItem, hir_id: HirId) {
+    fn check_test_attr(&self, meta: &MetaItemInner, hir_id: HirId) {
         if let Some(metas) = meta.meta_item_list() {
             for i_meta in metas {
                 match (i_meta.name_or_empty(), i_meta.meta_item()) {
@@ -1108,7 +1108,7 @@ impl<'tcx> CheckAttrVisitor<'tcx> {
 
     /// Check that the `#![doc(cfg_hide(...))]` attribute only contains a list of attributes.
     ///
-    fn check_doc_cfg_hide(&self, meta: &NestedMetaItem, hir_id: HirId) {
+    fn check_doc_cfg_hide(&self, meta: &MetaItemInner, hir_id: HirId) {
         if meta.meta_item_list().is_none() {
             self.tcx.emit_node_span_lint(
                 INVALID_DOC_ATTRIBUTES,
@@ -1499,8 +1499,7 @@ impl<'tcx> CheckAttrVisitor<'tcx> {
             return;
         };
 
-        if !matches!(&list[..], &[NestedMetaItem::Lit(MetaItemLit { kind: LitKind::Int(..), .. })])
-        {
+        if !matches!(&list[..], &[MetaItemInner::Lit(MetaItemLit { kind: LitKind::Int(..), .. })]) {
             self.tcx
                 .dcx()
                 .emit_err(errors::RustcLayoutScalarValidRangeArg { attr_span: attr.span });
@@ -2073,7 +2072,7 @@ impl<'tcx> CheckAttrVisitor<'tcx> {
                 let mut candidates = Vec::new();
 
                 for meta in metas {
-                    let NestedMetaItem::Lit(meta_lit) = meta else {
+                    let MetaItemInner::Lit(meta_lit) = meta else {
                         self.dcx().emit_err(errors::IncorrectMetaItem {
                             span: meta.span(),
                             suggestion: errors::IncorrectMetaItemSuggestion {
diff --git a/compiler/rustc_resolve/src/build_reduced_graph.rs b/compiler/rustc_resolve/src/build_reduced_graph.rs
index a9ea268e51a..d836e535669 100644
--- a/compiler/rustc_resolve/src/build_reduced_graph.rs
+++ b/compiler/rustc_resolve/src/build_reduced_graph.rs
@@ -1072,13 +1072,13 @@ impl<'a, 'ra, 'tcx> BuildReducedGraphVisitor<'a, 'ra, 'tcx> {
                             import_all = Some(meta.span);
                             break;
                         }
-                        MetaItemKind::List(nested_metas) => {
-                            for nested_meta in nested_metas {
-                                match nested_meta.ident() {
-                                    Some(ident) if nested_meta.is_word() => {
+                        MetaItemKind::List(meta_item_inners) => {
+                            for meta_item_inner in meta_item_inners {
+                                match meta_item_inner.ident() {
+                                    Some(ident) if meta_item_inner.is_word() => {
                                         single_imports.push(ident)
                                     }
-                                    _ => ill_formed(nested_meta.span()),
+                                    _ => ill_formed(meta_item_inner.span()),
                                 }
                             }
                         }
@@ -1198,8 +1198,10 @@ impl<'a, 'ra, 'tcx> BuildReducedGraphVisitor<'a, 'ra, 'tcx> {
         } else if attr::contains_name(&item.attrs, sym::proc_macro_attribute) {
             return Some((MacroKind::Attr, item.ident, item.span));
         } else if let Some(attr) = attr::find_by_name(&item.attrs, sym::proc_macro_derive) {
-            if let Some(nested_meta) = attr.meta_item_list().and_then(|list| list.get(0).cloned()) {
-                if let Some(ident) = nested_meta.ident() {
+            if let Some(meta_item_inner) =
+                attr.meta_item_list().and_then(|list| list.get(0).cloned())
+            {
+                if let Some(ident) = meta_item_inner.ident() {
                     return Some((MacroKind::Derive, ident, ident.span));
                 }
             }
diff --git a/compiler/rustc_resolve/src/diagnostics.rs b/compiler/rustc_resolve/src/diagnostics.rs
index 582db97e1ce..5437ca65935 100644
--- a/compiler/rustc_resolve/src/diagnostics.rs
+++ b/compiler/rustc_resolve/src/diagnostics.rs
@@ -2,8 +2,7 @@ use rustc_ast::expand::StrippedCfgItem;
 use rustc_ast::ptr::P;
 use rustc_ast::visit::{self, Visitor};
 use rustc_ast::{
-    self as ast, CRATE_NODE_ID, Crate, ItemKind, MetaItemKind, ModKind, NestedMetaItem, NodeId,
-    Path,
+    self as ast, CRATE_NODE_ID, Crate, ItemKind, MetaItemInner, MetaItemKind, ModKind, NodeId, Path,
 };
 use rustc_ast_pretty::pprust;
 use rustc_data_structures::fx::FxHashSet;
@@ -2541,7 +2540,7 @@ impl<'ra, 'tcx> Resolver<'ra, 'tcx> {
             err.subdiagnostic(note);
 
             if let MetaItemKind::List(nested) = &cfg.kind
-                && let NestedMetaItem::MetaItem(meta_item) = &nested[0]
+                && let MetaItemInner::MetaItem(meta_item) = &nested[0]
                 && let MetaItemKind::NameValue(feature_name) = &meta_item.kind
             {
                 let note = errors::ItemWasBehindFeature {
diff --git a/compiler/rustc_resolve/src/macros.rs b/compiler/rustc_resolve/src/macros.rs
index 21924437a4a..fa2be8216c7 100644
--- a/compiler/rustc_resolve/src/macros.rs
+++ b/compiler/rustc_resolve/src/macros.rs
@@ -129,8 +129,8 @@ pub(crate) fn registered_tools(tcx: TyCtxt<'_>, (): ()) -> RegisteredTools {
     let mut registered_tools = RegisteredTools::default();
     let (_, pre_configured_attrs) = &*tcx.crate_for_resolver(()).borrow();
     for attr in attr::filter_by_name(pre_configured_attrs, sym::register_tool) {
-        for nested_meta in attr.meta_item_list().unwrap_or_default() {
-            match nested_meta.ident() {
+        for meta_item_inner in attr.meta_item_list().unwrap_or_default() {
+            match meta_item_inner.ident() {
                 Some(ident) => {
                     if let Some(old_ident) = registered_tools.replace(ident) {
                         tcx.dcx().emit_err(errors::ToolWasAlreadyRegistered {
@@ -142,7 +142,7 @@ pub(crate) fn registered_tools(tcx: TyCtxt<'_>, (): ()) -> RegisteredTools {
                 }
                 None => {
                     tcx.dcx().emit_err(errors::ToolOnlyAcceptsIdentifiers {
-                        span: nested_meta.span(),
+                        span: meta_item_inner.span(),
                         tool: sym::register_tool,
                     });
                 }
diff --git a/compiler/rustc_session/src/cstore.rs b/compiler/rustc_session/src/cstore.rs
index b936a299b09..041a10475ea 100644
--- a/compiler/rustc_session/src/cstore.rs
+++ b/compiler/rustc_session/src/cstore.rs
@@ -72,7 +72,7 @@ pub struct NativeLib {
     pub name: Symbol,
     /// If packed_bundled_libs enabled, actual filename of library is stored.
     pub filename: Option<Symbol>,
-    pub cfg: Option<ast::NestedMetaItem>,
+    pub cfg: Option<ast::MetaItemInner>,
     pub foreign_module: Option<DefId>,
     pub verbatim: Option<bool>,
     pub dll_imports: Vec<DllImport>,
diff --git a/compiler/rustc_trait_selection/src/error_reporting/traits/on_unimplemented.rs b/compiler/rustc_trait_selection/src/error_reporting/traits/on_unimplemented.rs
index e9a2c5b8d8e..c3100c48b0a 100644
--- a/compiler/rustc_trait_selection/src/error_reporting/traits/on_unimplemented.rs
+++ b/compiler/rustc_trait_selection/src/error_reporting/traits/on_unimplemented.rs
@@ -1,7 +1,7 @@
 use std::iter;
 use std::path::PathBuf;
 
-use rustc_ast::{AttrArgs, AttrArgsEq, AttrKind, Attribute, NestedMetaItem};
+use rustc_ast::{AttrArgs, AttrArgsEq, AttrKind, Attribute, MetaItemInner};
 use rustc_data_structures::fx::FxHashMap;
 use rustc_errors::codes::*;
 use rustc_errors::{ErrorGuaranteed, struct_span_code_err};
@@ -282,7 +282,7 @@ pub struct OnUnimplementedFormatString {
 
 #[derive(Debug)]
 pub struct OnUnimplementedDirective {
-    pub condition: Option<NestedMetaItem>,
+    pub condition: Option<MetaItemInner>,
     pub subcommands: Vec<OnUnimplementedDirective>,
     pub message: Option<OnUnimplementedFormatString>,
     pub label: Option<OnUnimplementedFormatString>,
@@ -389,7 +389,7 @@ impl<'tcx> OnUnimplementedDirective {
     fn parse(
         tcx: TyCtxt<'tcx>,
         item_def_id: DefId,
-        items: &[NestedMetaItem],
+        items: &[MetaItemInner],
         span: Span,
         is_root: bool,
         is_diagnostic_namespace_variant: bool,