Mark span parent in def_collector.

compiler/rustc_ast/src/format.rs

@@ -180,7 +180,6 @@ pub struct FormatPlaceholder {
     #[visitable(ignore)]
     pub format_trait: FormatTrait,
     /// `{}` or `{:.5}` or `{:-^20}`, etc.
-    #[visitable(ignore)]
     pub format_options: FormatOptions,
 }
 
@@ -229,23 +228,26 @@ pub enum FormatTrait {
     UpperHex,
 }
 
-#[derive(Clone, Encodable, Decodable, Default, Debug, PartialEq, Eq)]
+#[derive(Clone, Encodable, Decodable, Default, Debug, PartialEq, Eq, Walkable)]
 pub struct FormatOptions {
     /// The width. E.g. `{:5}` or `{:width$}`.
     pub width: Option<FormatCount>,
     /// The precision. E.g. `{:.5}` or `{:.precision$}`.
     pub precision: Option<FormatCount>,
     /// The alignment. E.g. `{:>}` or `{:<}` or `{:^}`.
+    #[visitable(ignore)]
     pub alignment: Option<FormatAlignment>,
     /// The fill character. E.g. the `.` in `{:.>10}`.
     pub fill: Option<char>,
     /// The `+` or `-` flag.
+    #[visitable(ignore)]
     pub sign: Option<FormatSign>,
     /// The `#` flag.
     pub alternate: bool,
     /// The `0` flag. E.g. the `0` in `{:02x}`.
     pub zero_pad: bool,
     /// The `x` or `X` flag (for `Debug` only). E.g. the `x` in `{:x?}`.
+    #[visitable(ignore)]
     pub debug_hex: Option<FormatDebugHex>,
 }
 
@@ -275,7 +277,7 @@ pub enum FormatAlignment {
     Center,
 }
 
-#[derive(Clone, Encodable, Decodable, Debug, PartialEq, Eq)]
+#[derive(Clone, Encodable, Decodable, Debug, PartialEq, Eq, Walkable)]
 pub enum FormatCount {
     /// `{:5}` or `{:.5}`
     Literal(u16),

compiler/rustc_ast/src/visit.rs

@@ -375,6 +375,7 @@ macro_rules! common_visitor_and_walkers {
             std::borrow::Cow<'_, str>,
             Symbol,
             u8,
+            u16,
             usize,
         );
         // `Span` is only a no-op for the non-mutable visitor.
@@ -436,6 +437,8 @@ macro_rules! common_visitor_and_walkers {
             FormatArgument,
             FormatArgumentKind,
             FormatArguments,
+            FormatCount,
+            FormatOptions,
             FormatPlaceholder,
             GenericParamKind,
             Impl,
@@ -1067,6 +1070,7 @@ macro_rules! common_visitor_and_walkers {
             pub fn walk_contract(FnContract);
             pub fn walk_coroutine_kind(CoroutineKind);
             pub fn walk_crate(Crate);
+            pub fn walk_defaultness(Defaultness);
             pub fn walk_expr(Expr);
             pub fn walk_expr_field(ExprField);
             pub fn walk_field_def(FieldDef);

compiler/rustc_ast_lowering/src/asm.rs

@@ -237,7 +237,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                         hir::InlineAsmOperand::Label { block: self.lower_block(block, false) }
                     }
                 };
-                (op, self.lower_span(*op_sp))
+                (op, *op_sp)
             })
             .collect();
 
@@ -463,7 +463,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                             late: true,
                             expr: None,
                         },
-                        self.lower_span(abi_span),
+                        abi_span,
                     ));
                     clobbered.insert(clobber);
                 }
@@ -497,12 +497,9 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
         let operands = self.arena.alloc_from_iter(operands);
         let template = self.arena.alloc_from_iter(asm.template.iter().cloned());
         let template_strs = self.arena.alloc_from_iter(
-            asm.template_strs
-                .iter()
-                .map(|(sym, snippet, span)| (*sym, *snippet, self.lower_span(*span))),
+            asm.template_strs.iter().map(|(sym, snippet, span)| (*sym, *snippet, *span)),
         );
-        let line_spans =
-            self.arena.alloc_from_iter(asm.line_spans.iter().map(|span| self.lower_span(*span)));
+        let line_spans = self.arena.alloc_from_iter(asm.line_spans.iter().copied());
         let hir_asm = hir::InlineAsm {
             asm_macro: asm.asm_macro,
             template,

compiler/rustc_ast_lowering/src/block.rs

@@ -23,7 +23,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
     ) -> hir::Block<'hir> {
         let (stmts, expr) = self.lower_stmts(&b.stmts);
         let rules = self.lower_block_check_mode(&b.rules);
-        hir::Block { hir_id, stmts, expr, rules, span: self.lower_span(b.span), targeted_by_break }
+        hir::Block { hir_id, stmts, expr, rules, span: b.span, targeted_by_break }
     }
 
     fn lower_stmts(
@@ -39,7 +39,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                     let local = self.lower_local(local);
                     self.alias_attrs(hir_id, local.hir_id);
                     let kind = hir::StmtKind::Let(local);
-                    let span = self.lower_span(s.span);
+                    let span = s.span;
                     stmts.push(hir::Stmt { hir_id, kind, span });
                 }
                 StmtKind::Item(it) => {
@@ -50,7 +50,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                                 _ => self.next_id(),
                             };
                             let kind = hir::StmtKind::Item(item_id);
-                            let span = self.lower_span(s.span);
+                            let span = s.span;
                             hir::Stmt { hir_id, kind, span }
                         },
                     ));
@@ -63,7 +63,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                         let hir_id = self.lower_node_id(s.id);
                         self.alias_attrs(hir_id, e.hir_id);
                         let kind = hir::StmtKind::Expr(e);
-                        let span = self.lower_span(s.span);
+                        let span = s.span;
                         stmts.push(hir::Stmt { hir_id, kind, span });
                     }
                 }
@@ -72,7 +72,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                     let hir_id = self.lower_node_id(s.id);
                     self.alias_attrs(hir_id, e.hir_id);
                     let kind = hir::StmtKind::Semi(e);
-                    let span = self.lower_span(s.span);
+                    let span = s.span;
                     stmts.push(hir::Stmt { hir_id, kind, span });
                 }
                 StmtKind::Empty => {}
@@ -107,7 +107,7 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
         } else {
             None
         };
-        let span = self.lower_span(l.span);
+        let span = l.span;
         let source = hir::LocalSource::Normal;
         self.lower_attrs(hir_id, &l.attrs, l.span);
         self.arena.alloc(hir::LetStmt { hir_id, super_, ty, pat, init, els, span, source })

compiler/rustc_ast_lowering/src/delegation.rs

@@ -83,7 +83,7 @@ impl<'hir> LoweringContext<'_, 'hir> {
         item_id: NodeId,
         is_in_trait_impl: bool,
     ) -> DelegationResults<'hir> {
-        let span = self.lower_span(delegation.path.segments.last().unwrap().ident.span);
+        let span = delegation.path.segments.last().unwrap().ident.span;
         let sig_id = self.get_delegation_sig_id(item_id, delegation.id, span, is_in_trait_impl);
         match sig_id {
             Ok(sig_id) => {
@@ -92,9 +92,8 @@ impl<'hir> LoweringContext<'_, 'hir> {
                 let decl = self.lower_delegation_decl(sig_id, param_count, c_variadic, span);
                 let sig = self.lower_delegation_sig(sig_id, decl, span);
                 let body_id = self.lower_delegation_body(delegation, is_method, param_count, span);
-                let ident = self.lower_ident(delegation.ident);
                 let generics = self.lower_delegation_generics(span);
-                DelegationResults { body_id, sig, ident, generics }
+                DelegationResults { body_id, sig, ident: delegation.ident, generics }
             }
             Err(err) => self.generate_delegation_error(err, span),
         }