Ident::with_empty_ctxt -> Ident::with_dummy_span

`Ident` has had a full span rather than just a `SyntaxContext` for a long time now.

src/librustc/hir/lowering.rs

@@ -1224,7 +1224,7 @@ impl<'a> LoweringContext<'a> {
                     P(hir::Path {
                         res,
                         segments: hir_vec![hir::PathSegment::from_ident(
-                            Ident::with_empty_ctxt(kw::SelfUpper)
+                            Ident::with_dummy_span(kw::SelfUpper)
                         )],
                         span: t.span,
                     }),
@@ -1558,7 +1558,7 @@ impl<'a> LoweringContext<'a> {
 
                     let (name, kind) = match name {
                         hir::LifetimeName::Underscore => (
-                            hir::ParamName::Plain(Ident::with_empty_ctxt(kw::UnderscoreLifetime)),
+                            hir::ParamName::Plain(Ident::with_dummy_span(kw::UnderscoreLifetime)),
                             hir::LifetimeParamKind::Elided,
                         ),
                         hir::LifetimeName::Param(param_name) => (
@@ -2002,7 +2002,7 @@ impl<'a> LoweringContext<'a> {
                         bindings: hir_vec![
                             hir::TypeBinding {
                                 hir_id: this.next_id(),
-                                ident: Ident::with_empty_ctxt(FN_OUTPUT_NAME),
+                                ident: Ident::with_dummy_span(FN_OUTPUT_NAME),
                                 kind: hir::TypeBindingKind::Equality {
                                     ty: output
                                         .as_ref()
@@ -2394,7 +2394,7 @@ impl<'a> LoweringContext<'a> {
         let future_params = P(hir::GenericArgs {
             args: hir_vec![],
             bindings: hir_vec![hir::TypeBinding {
-                ident: Ident::with_empty_ctxt(FN_OUTPUT_NAME),
+                ident: Ident::with_dummy_span(FN_OUTPUT_NAME),
                 kind: hir::TypeBindingKind::Equality {
                     ty: output_ty,
                 },

src/librustc/hir/lowering/expr.rs

@@ -552,7 +552,7 @@ impl LoweringContext<'_> {
 
         // let mut pinned = <expr>;
         let expr = P(self.lower_expr(expr));
-        let pinned_ident = Ident::with_empty_ctxt(sym::pinned);
+        let pinned_ident = Ident::with_dummy_span(sym::pinned);
         let (pinned_pat, pinned_pat_hid) = self.pat_ident_binding_mode(
             span,
             pinned_ident,
@@ -593,7 +593,7 @@ impl LoweringContext<'_> {
         let loop_node_id = self.sess.next_node_id();
         let loop_hir_id = self.lower_node_id(loop_node_id);
         let ready_arm = {
-            let x_ident = Ident::with_empty_ctxt(sym::result);
+            let x_ident = Ident::with_dummy_span(sym::result);
             let (x_pat, x_pat_hid) = self.pat_ident(span, x_ident);
             let x_expr = P(self.expr_ident(span, x_ident, x_pat_hid));
             let ready_pat = self.pat_std_enum(
@@ -1070,9 +1070,9 @@ impl LoweringContext<'_> {
         );
         head.span = desugared_span;
 
-        let iter = Ident::with_empty_ctxt(sym::iter);
+        let iter = Ident::with_dummy_span(sym::iter);
 
-        let next_ident = Ident::with_empty_ctxt(sym::__next);
+        let next_ident = Ident::with_dummy_span(sym::__next);
         let (next_pat, next_pat_hid) = self.pat_ident_binding_mode(
             desugared_span,
             next_ident,
@@ -1081,7 +1081,7 @@ impl LoweringContext<'_> {
 
         // `::std::option::Option::Some(val) => __next = val`
         let pat_arm = {
-            let val_ident = Ident::with_empty_ctxt(sym::val);
+            let val_ident = Ident::with_dummy_span(sym::val);
             let (val_pat, val_pat_hid) = self.pat_ident(pat.span, val_ident);
             let val_expr = P(self.expr_ident(pat.span, val_ident, val_pat_hid));
             let next_expr = P(self.expr_ident(pat.span, next_ident, next_pat_hid));
@@ -1247,7 +1247,7 @@ impl LoweringContext<'_> {
 
         // `Ok(val) => #[allow(unreachable_code)] val,`
         let ok_arm = {
-            let val_ident = Ident::with_empty_ctxt(sym::val);
+            let val_ident = Ident::with_dummy_span(sym::val);
             let (val_pat, val_pat_nid) = self.pat_ident(span, val_ident);
             let val_expr = P(self.expr_ident_with_attrs(
                 span,
@@ -1263,7 +1263,7 @@ impl LoweringContext<'_> {
         // `Err(err) => #[allow(unreachable_code)]
         //              return Try::from_error(From::from(err)),`
         let err_arm = {
-            let err_ident = Ident::with_empty_ctxt(sym::err);
+            let err_ident = Ident::with_dummy_span(sym::err);
             let (err_local, err_local_nid) = self.pat_ident(try_span, err_ident);
             let from_expr = {
                 let from_path = &[sym::convert, sym::From, sym::from];

src/librustc/hir/mod.rs

@@ -202,7 +202,7 @@ impl ParamName {
         match *self {
             ParamName::Plain(ident) => ident,
             ParamName::Fresh(_) |
-            ParamName::Error => Ident::with_empty_ctxt(kw::UnderscoreLifetime),
+            ParamName::Error => Ident::with_dummy_span(kw::UnderscoreLifetime),
         }
     }
 
@@ -237,8 +237,8 @@ impl LifetimeName {
     pub fn ident(&self) -> Ident {
         match *self {
             LifetimeName::Implicit | LifetimeName::Error => Ident::invalid(),
-            LifetimeName::Underscore => Ident::with_empty_ctxt(kw::UnderscoreLifetime),
+            LifetimeName::Underscore => Ident::with_dummy_span(kw::UnderscoreLifetime),
-            LifetimeName::Static => Ident::with_empty_ctxt(kw::StaticLifetime),
+            LifetimeName::Static => Ident::with_dummy_span(kw::StaticLifetime),
             LifetimeName::Param(param_name) => param_name.ident(),
         }
     }

src/librustc/hir/print.rs

@@ -1457,7 +1457,7 @@ impl<'a> State<'a> {
     }
 
     pub fn print_name(&mut self, name: ast::Name) {
-        self.print_ident(ast::Ident::with_empty_ctxt(name))
+        self.print_ident(ast::Ident::with_dummy_span(name))
     }
 
     pub fn print_for_decl(&mut self, loc: &hir::Local, coll: &hir::Expr) {

src/librustc/traits/project.rs

@@ -1417,7 +1417,7 @@ fn confirm_callable_candidate<'cx, 'tcx>(
                 projection_ty: ty::ProjectionTy::from_ref_and_name(
                     tcx,
                     trait_ref,
-                    Ident::with_empty_ctxt(FN_OUTPUT_NAME),
+                    Ident::with_dummy_span(FN_OUTPUT_NAME),
                 ),
                 ty: ret_type
             }

src/librustc_driver/lib.rs

@@ -678,7 +678,7 @@ impl RustcDefaultCalls {
 
                     let mut cfgs = sess.parse_sess.config.iter().filter_map(|&(name, ref value)| {
                         let gated_cfg = GatedCfg::gate(&ast::MetaItem {
-                            path: ast::Path::from_ident(ast::Ident::with_empty_ctxt(name)),
+                            path: ast::Path::from_ident(ast::Ident::with_dummy_span(name)),
                             node: ast::MetaItemKind::Word,
                             span: DUMMY_SP,
                         });

src/librustc_metadata/decoder.rs

@@ -569,7 +569,7 @@ impl<'a, 'tcx> CrateMetadata {
 
         ty::VariantDef::new(
             tcx,
-            Ident::with_empty_ctxt(self.item_name(index)),
+            Ident::with_dummy_span(self.item_name(index)),
             variant_did,
             ctor_did,
             data.discr,
@@ -577,7 +577,7 @@ impl<'a, 'tcx> CrateMetadata {
                 let f = self.entry(index);
                 ty::FieldDef {
                     did: self.local_def_id(index),
-                    ident: Ident::with_empty_ctxt(self.item_name(index)),
+                    ident: Ident::with_dummy_span(self.item_name(index)),
                     vis: f.visibility.decode(self)
                 }
             }).collect(),
@@ -741,7 +741,7 @@ impl<'a, 'tcx> CrateMetadata {
                         DefKind::Macro(ext.macro_kind()),
                         self.local_def_id(DefIndex::from_proc_macro_index(id)),
                     );
-                    let ident = Ident::with_empty_ctxt(name);
+                    let ident = Ident::with_dummy_span(name);
                     callback(def::Export {
                         ident: ident,
                         res: res,
@@ -783,7 +783,7 @@ impl<'a, 'tcx> CrateMetadata {
                             if let Some(kind) = self.def_kind(child_index) {
                                 callback(def::Export {
                                     res: Res::Def(kind, self.local_def_id(child_index)),
-                                    ident: Ident::with_empty_ctxt(self.item_name(child_index)),
+                                    ident: Ident::with_dummy_span(self.item_name(child_index)),
                                     vis: self.get_visibility(child_index),
                                     span: self.entry(child_index).span.decode((self, sess)),
                                 });

src/librustc_resolve/diagnostics.rs

@@ -595,7 +595,7 @@ impl<'a> Resolver<'a> {
         where FilterFn: Fn(Res) -> bool
     {
         let mut suggestions = self.lookup_import_candidates_from_module(
-            lookup_ident, namespace, self.graph_root, Ident::with_empty_ctxt(kw::Crate), &filter_fn
+            lookup_ident, namespace, self.graph_root, Ident::with_dummy_span(kw::Crate), &filter_fn
         );
 
         if lookup_ident.span.rust_2018() {

src/librustc_resolve/late.rs

@@ -352,7 +352,7 @@ impl<'a, 'tcx> Visitor<'tcx> for LateResolutionVisitor<'a, '_> {
                 self.smart_resolve_path(ty.id, qself.as_ref(), path, PathSource::Type);
             }
             TyKind::ImplicitSelf => {
-                let self_ty = Ident::with_empty_ctxt(kw::SelfUpper);
+                let self_ty = Ident::with_dummy_span(kw::SelfUpper);
                 let res = self.resolve_ident_in_lexical_scope(self_ty, TypeNS, Some(ty.id), ty.span)
                               .map_or(Res::Err, |d| d.res());
                 self.r.record_partial_res(ty.id, PartialRes::new(res));
@@ -442,7 +442,7 @@ impl<'a, 'tcx> Visitor<'tcx> for LateResolutionVisitor<'a, '_> {
                 GenericParamKind::Type { ref default, .. } => {
                     found_default |= default.is_some();
                     if found_default {
-                        Some((Ident::with_empty_ctxt(param.ident.name), Res::Err))
+                        Some((Ident::with_dummy_span(param.ident.name), Res::Err))
                     } else {
                         None
                     }
@@ -459,7 +459,7 @@ impl<'a, 'tcx> Visitor<'tcx> for LateResolutionVisitor<'a, '_> {
                     false
                 }
             })
-            .map(|param| (Ident::with_empty_ctxt(param.ident.name), Res::Err)));
+            .map(|param| (Ident::with_dummy_span(param.ident.name), Res::Err)));
 
         for param in &generics.params {
             match param.kind {
@@ -476,7 +476,7 @@ impl<'a, 'tcx> Visitor<'tcx> for LateResolutionVisitor<'a, '_> {
                     }
 
                     // Allow all following defaults to refer to this type parameter.
-                    default_ban_rib.bindings.remove(&Ident::with_empty_ctxt(param.ident.name));
+                    default_ban_rib.bindings.remove(&Ident::with_dummy_span(param.ident.name));
                 }
                 GenericParamKind::Const { ref ty } => {
                     self.ribs[TypeNS].push(const_ty_param_ban_rib);
@@ -965,7 +965,7 @@ impl<'a, 'b> LateResolutionVisitor<'a, '_> {
         let mut self_type_rib = Rib::new(NormalRibKind);
 
         // Plain insert (no renaming, since types are not currently hygienic)
-        self_type_rib.bindings.insert(Ident::with_empty_ctxt(kw::SelfUpper), self_res);
+        self_type_rib.bindings.insert(Ident::with_dummy_span(kw::SelfUpper), self_res);
         self.ribs[TypeNS].push(self_type_rib);
         f(self);
         self.ribs[TypeNS].pop();
@@ -976,7 +976,7 @@ impl<'a, 'b> LateResolutionVisitor<'a, '_> {
     {
         let self_res = Res::SelfCtor(impl_id);
         let mut self_type_rib = Rib::new(NormalRibKind);
-        self_type_rib.bindings.insert(Ident::with_empty_ctxt(kw::SelfUpper), self_res);
+        self_type_rib.bindings.insert(Ident::with_dummy_span(kw::SelfUpper), self_res);
         self.ribs[ValueNS].push(self_type_rib);
         f(self);
         self.ribs[ValueNS].pop();
@@ -1476,7 +1476,7 @@ impl<'a, 'b> LateResolutionVisitor<'a, '_> {
                     self.r.trait_map.insert(id, traits);
                 }
 
-                let mut std_path = vec![Segment::from_ident(Ident::with_empty_ctxt(sym::std))];
+                let mut std_path = vec![Segment::from_ident(Ident::with_dummy_span(sym::std))];
                 std_path.extend(path);
                 if self.r.primitive_type_table.primitive_types.contains_key(&path[0].ident.name) {
                     let cl = CrateLint::No;
@@ -1507,7 +1507,7 @@ impl<'a, 'b> LateResolutionVisitor<'a, '_> {
 
     fn self_type_is_available(&mut self, span: Span) -> bool {
         let binding = self.resolve_ident_in_lexical_scope(
-            Ident::with_empty_ctxt(kw::SelfUpper),
+            Ident::with_dummy_span(kw::SelfUpper),
             TypeNS,
             None,
             span,

src/librustc_resolve/lib.rs

@@ -985,11 +985,11 @@ impl<'a> hir::lowering::Resolver for Resolver<'a> {
         } else {
             kw::Crate
         };
-        let segments = iter::once(Ident::with_empty_ctxt(root))
+        let segments = iter::once(Ident::with_dummy_span(root))
             .chain(
                 crate_root.into_iter()
                     .chain(components.iter().cloned())
-                    .map(Ident::with_empty_ctxt)
+                    .map(Ident::with_dummy_span)
             ).map(|i| self.new_ast_path_segment(i)).collect::<Vec<_>>();
 
         let path = ast::Path {
@@ -1060,11 +1060,11 @@ impl<'a> Resolver<'a> {
                                        .collect();
 
         if !attr::contains_name(&krate.attrs, sym::no_core) {
-            extern_prelude.insert(Ident::with_empty_ctxt(sym::core), Default::default());
+            extern_prelude.insert(Ident::with_dummy_span(sym::core), Default::default());
             if !attr::contains_name(&krate.attrs, sym::no_std) {
-                extern_prelude.insert(Ident::with_empty_ctxt(sym::std), Default::default());
+                extern_prelude.insert(Ident::with_dummy_span(sym::std), Default::default());
                 if session.rust_2018() {
-                    extern_prelude.insert(Ident::with_empty_ctxt(sym::meta), Default::default());
+                    extern_prelude.insert(Ident::with_dummy_span(sym::meta), Default::default());
                 }
             }
         }
@@ -2624,7 +2624,7 @@ impl<'a> Resolver<'a> {
         let path = if path_str.starts_with("::") {
             ast::Path {
                 span,
-                segments: iter::once(Ident::with_empty_ctxt(kw::PathRoot))
+                segments: iter::once(Ident::with_dummy_span(kw::PathRoot))
                     .chain({
                         path_str.split("::").skip(1).map(Ident::from_str)
                     })
@@ -2713,7 +2713,7 @@ fn module_to_string(module: Module<'_>) -> Option<String> {
     fn collect_mod(names: &mut Vec<Ident>, module: Module<'_>) {
         if let ModuleKind::Def(.., name) = module.kind {
             if let Some(parent) = module.parent {
-                names.push(Ident::with_empty_ctxt(name));
+                names.push(Ident::with_dummy_span(name));
                 collect_mod(names, parent);
             }
         } else {

src/librustc_typeck/check/mod.rs

@@ -2943,7 +2943,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
             (PlaceOp::Index, false) => (self.tcx.lang_items().index_trait(), sym::index),
             (PlaceOp::Index, true) => (self.tcx.lang_items().index_mut_trait(), sym::index_mut),
         };
-        (tr, ast::Ident::with_empty_ctxt(name))
+        (tr, ast::Ident::with_dummy_span(name))
     }
 
     fn try_overloaded_place_op(&self,

src/librustdoc/clean/mod.rs

@@ -930,7 +930,7 @@ impl Attributes {
             if attr.check_name(sym::enable) {
                 if let Some(feat) = attr.value_str() {
                     let meta = attr::mk_name_value_item_str(
-                        Ident::with_empty_ctxt(sym::target_feature), feat, DUMMY_SP
+                        Ident::with_dummy_span(sym::target_feature), feat, DUMMY_SP
                     );
                     if let Ok(feat_cfg) = Cfg::parse(&meta) {
                         cfg &= feat_cfg;

src/libsyntax/attr/mod.rs

@@ -327,7 +327,7 @@ impl Attribute {
         if self.is_sugared_doc {
             let comment = self.value_str().unwrap();
             let meta = mk_name_value_item_str(
-                Ident::with_empty_ctxt(sym::doc),
+                Ident::with_dummy_span(sym::doc),
                 Symbol::intern(&strip_doc_comment_decoration(&comment.as_str())),
                 DUMMY_SP,
             );
@@ -412,7 +412,7 @@ pub fn mk_sugared_doc_attr(text: Symbol, span: Span) -> Attribute {
     Attribute {
         id: mk_attr_id(),
         style,
-        path: Path::from_ident(Ident::with_empty_ctxt(sym::doc).with_span_pos(span)),
+        path: Path::from_ident(Ident::with_dummy_span(sym::doc).with_span_pos(span)),
         tokens: MetaItemKind::NameValue(lit).tokens(span),
         is_sugared_doc: true,
         span,

src/libsyntax/diagnostics/plugin.rs

@@ -172,7 +172,7 @@ pub fn expand_build_diagnostic_array<'cx>(ecx: &'cx mut ExtCtxt<'_>,
             (descriptions.len(), ecx.expr_vec(span, descriptions))
         });
 
-    let static_ = ecx.lifetime(span, Ident::with_empty_ctxt(kw::StaticLifetime));
+    let static_ = ecx.lifetime(span, Ident::with_dummy_span(kw::StaticLifetime));
     let ty_str = ecx.ty_rptr(
         span,
         ecx.ty_ident(span, ecx.ident_of("str")),

src/libsyntax/ext/base.rs

@@ -872,7 +872,7 @@ impl<'a> ExtCtxt<'a> {
     pub fn std_path(&self, components: &[Symbol]) -> Vec<ast::Ident> {
         let def_site = DUMMY_SP.apply_mark(self.current_expansion.id);
         iter::once(Ident::new(kw::DollarCrate, def_site))
-            .chain(components.iter().map(|&s| Ident::with_empty_ctxt(s)))
+            .chain(components.iter().map(|&s| Ident::with_dummy_span(s)))
             .collect()
     }
     pub fn name_of(&self, st: &str) -> ast::Name {

src/libsyntax/ext/build.rs

@@ -340,7 +340,7 @@ impl<'a> ExtCtxt<'a> {
         self.expr_path(self.path_ident(span, id))
     }
     pub fn expr_self(&self, span: Span) -> P<ast::Expr> {
-        self.expr_ident(span, Ident::with_empty_ctxt(kw::SelfLower))
+        self.expr_ident(span, Ident::with_dummy_span(kw::SelfLower))
     }
 
     pub fn expr_binary(&self, sp: Span, op: ast::BinOpKind,

src/libsyntax/ext/expand.rs

@@ -1249,21 +1249,21 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
                             let include_info = vec![
                                 ast::NestedMetaItem::MetaItem(
                                     attr::mk_name_value_item_str(
-                                        Ident::with_empty_ctxt(sym::file),
+                                        Ident::with_dummy_span(sym::file),
                                         file,
                                         DUMMY_SP,
                                     ),
                                 ),
                                 ast::NestedMetaItem::MetaItem(
                                     attr::mk_name_value_item_str(
-                                        Ident::with_empty_ctxt(sym::contents),
+                                        Ident::with_dummy_span(sym::contents),
                                         src_interned,
                                         DUMMY_SP,
                                     ),
                                 ),
                             ];
 
-                            let include_ident = Ident::with_empty_ctxt(sym::include);
+                            let include_ident = Ident::with_dummy_span(sym::include);
                             let item = attr::mk_list_item(include_ident, include_info);
                             items.push(ast::NestedMetaItem::MetaItem(item));
                         }
@@ -1325,7 +1325,7 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
                 }
             }
 
-            let meta = attr::mk_list_item(Ident::with_empty_ctxt(sym::doc), items);
+            let meta = attr::mk_list_item(Ident::with_dummy_span(sym::doc), items);
             *at = attr::Attribute {
                 span: at.span,
                 id: at.id,

src/libsyntax/parse/parser/module.rs

@@ -60,7 +60,7 @@ impl<'a> Parser<'a> {
                 // Record that we fetched the mod from an external file
                 if warn {
                     let attr = attr::mk_attr_outer(
-                        attr::mk_word_item(Ident::with_empty_ctxt(sym::warn_directory_ownership)));
+                        attr::mk_word_item(Ident::with_dummy_span(sym::warn_directory_ownership)));
                     attr::mark_known(&attr);
                     attrs.push(attr);
                 }

src/libsyntax/print/pprust.rs

@@ -123,13 +123,13 @@ pub fn print_crate<'a>(cm: &'a SourceMap,
         // of the feature gate, so we fake them up here.
 
         // #![feature(prelude_import)]
-        let pi_nested = attr::mk_nested_word_item(ast::Ident::with_empty_ctxt(sym::prelude_import));
+        let pi_nested = attr::mk_nested_word_item(ast::Ident::with_dummy_span(sym::prelude_import));
-        let list = attr::mk_list_item(ast::Ident::with_empty_ctxt(sym::feature), vec![pi_nested]);
+        let list = attr::mk_list_item(ast::Ident::with_dummy_span(sym::feature), vec![pi_nested]);
         let fake_attr = attr::mk_attr_inner(list);
         s.print_attribute(&fake_attr);
 
         // #![no_std]
-        let no_std_meta = attr::mk_word_item(ast::Ident::with_empty_ctxt(sym::no_std));
+        let no_std_meta = attr::mk_word_item(ast::Ident::with_dummy_span(sym::no_std));
         let fake_attr = attr::mk_attr_inner(no_std_meta);
         s.print_attribute(&fake_attr);
     }

src/libsyntax_ext/deriving/clone.rs

@@ -129,7 +129,7 @@ fn cs_clone_shallow(name: &str,
     if is_union {
         // let _: AssertParamIsCopy<Self>;
         let self_ty =
-            cx.ty_path(cx.path_ident(trait_span, ast::Ident::with_empty_ctxt(kw::SelfUpper)));
+            cx.ty_path(cx.path_ident(trait_span, ast::Ident::with_dummy_span(kw::SelfUpper)));
         assert_ty_bounds(cx, &mut stmts, self_ty, trait_span, "AssertParamIsCopy");
     } else {
         match *substr.fields {

src/libsyntax_ext/deriving/debug.rs

@@ -82,7 +82,7 @@ fn show_substructure(cx: &mut ExtCtxt<'_>, span: Span, substr: &Substructure<'_>
 
                 let expr = cx.expr_method_call(span,
                                                 builder_expr.clone(),
-                                                Ident::with_empty_ctxt(sym::field),
+                                                Ident::with_dummy_span(sym::field),
                                                 vec![field]);
 
                 // Use `let _ = expr;` to avoid triggering the
@@ -106,7 +106,7 @@ fn show_substructure(cx: &mut ExtCtxt<'_>, span: Span, substr: &Substructure<'_>
                 let field = cx.expr_addr_of(field.span, field);
                 let expr = cx.expr_method_call(span,
                                                 builder_expr.clone(),
-                                                Ident::with_empty_ctxt(sym::field),
+                                                Ident::with_dummy_span(sym::field),
                                                 vec![name, field]);
                 stmts.push(stmt_let_undescore(cx, span, expr));
             }

src/libsyntax_ext/deriving/generic/mod.rs

@@ -928,7 +928,7 @@ impl<'a> MethodDef<'a> {
 
         let args = {
             let self_args = explicit_self.map(|explicit_self| {
-                let ident = Ident::with_empty_ctxt(kw::SelfLower).with_span_pos(trait_.span);
+                let ident = Ident::with_dummy_span(kw::SelfLower).with_span_pos(trait_.span);
                 ast::Arg::from_self(ThinVec::default(), explicit_self, ident)
             });
             let nonself_args = arg_types.into_iter()

src/libsyntax_ext/env.rs

@@ -23,13 +23,13 @@ pub fn expand_option_env<'cx>(cx: &'cx mut ExtCtxt<'_>,
     let sp = sp.apply_mark(cx.current_expansion.id);
     let e = match env::var(&*var.as_str()) {
         Err(..) => {
-            let lt = cx.lifetime(sp, Ident::with_empty_ctxt(kw::StaticLifetime));
+            let lt = cx.lifetime(sp, Ident::with_dummy_span(kw::StaticLifetime));
             cx.expr_path(cx.path_all(sp,
                                      true,
                                      cx.std_path(&[sym::option, sym::Option, sym::None]),
                                      vec![GenericArg::Type(cx.ty_rptr(sp,
                                                      cx.ty_ident(sp,
-                                                                 Ident::with_empty_ctxt(sym::str)),
+                                                                 Ident::with_dummy_span(sym::str)),
                                                      Some(lt),
                                                      ast::Mutability::Immutable))],
                                      vec![]))

src/libsyntax_ext/global_allocator.rs

@@ -44,7 +44,7 @@ pub fn expand(
     let const_ty = ecx.ty(span, TyKind::Tup(Vec::new()));
     let const_body = ecx.expr_block(ecx.block(span, stmts));
     let const_item =
-        ecx.item_const(span, Ident::with_empty_ctxt(kw::Underscore), const_ty, const_body);
+        ecx.item_const(span, Ident::with_dummy_span(kw::Underscore), const_ty, const_body);
 
     // Return the original item and the new methods.
     vec![Annotatable::Item(item), Annotatable::Item(const_item)]
@@ -120,7 +120,7 @@ impl AllocFnFactory<'_, '_> {
     ) -> P<Expr> {
         match *ty {
             AllocatorTy::Layout => {
-                let usize = self.cx.path_ident(self.span, Ident::with_empty_ctxt(sym::usize));
+                let usize = self.cx.path_ident(self.span, Ident::with_dummy_span(sym::usize));
                 let ty_usize = self.cx.ty_path(usize);
                 let size = ident();
                 let align = ident();
@@ -178,12 +178,12 @@ impl AllocFnFactory<'_, '_> {
     }
 
     fn usize(&self) -> P<Ty> {
-        let usize = self.cx.path_ident(self.span, Ident::with_empty_ctxt(sym::usize));
+        let usize = self.cx.path_ident(self.span, Ident::with_dummy_span(sym::usize));
         self.cx.ty_path(usize)
     }
 
     fn ptr_u8(&self) -> P<Ty> {
-        let u8 = self.cx.path_ident(self.span, Ident::with_empty_ctxt(sym::u8));
+        let u8 = self.cx.path_ident(self.span, Ident::with_dummy_span(sym::u8));
         let ty_u8 = self.cx.ty_path(u8);
         self.cx.ty_ptr(self.span, ty_u8, Mutability::Mutable)
     }

src/libsyntax_ext/lib.rs

@@ -42,7 +42,7 @@ pub mod test_harness;
 
 pub fn register_builtin_macros(resolver: &mut dyn syntax::ext::base::Resolver, edition: Edition) {
     let mut register = |name, kind| resolver.register_builtin_macro(
-        Ident::with_empty_ctxt(name), SyntaxExtension {
+        Ident::with_dummy_span(name), SyntaxExtension {
             is_builtin: true, ..SyntaxExtension::default(kind, edition)
         },
     );

src/libsyntax_ext/plugin_macro_defs.rs

@@ -48,7 +48,7 @@ pub fn inject(
             [sym::rustc_attrs][..].into(),
         ));
         for (name, ext) in named_exts {
-            resolver.register_builtin_macro(Ident::with_empty_ctxt(name), ext);
+            resolver.register_builtin_macro(Ident::with_dummy_span(name), ext);
             extra_items.push(plugin_macro_def(name, span));
         }
         // The `macro_rules` items must be inserted before any other items.

src/libsyntax_ext/proc_macro_harness.rs

@@ -337,7 +337,7 @@ fn mk_decls(
     let doc = cx.meta_list(span, sym::doc, vec![hidden]);
     let doc_hidden = cx.attribute(doc);
 
-    let proc_macro = Ident::with_empty_ctxt(sym::proc_macro);
+    let proc_macro = Ident::with_dummy_span(sym::proc_macro);
     let krate = cx.item(span,
                         proc_macro,
                         Vec::new(),
@@ -349,7 +349,7 @@ fn mk_decls(
     let custom_derive = Ident::from_str("custom_derive");
     let attr = Ident::from_str("attr");
     let bang = Ident::from_str("bang");
-    let crate_kw = Ident::with_empty_ctxt(kw::Crate);
+    let crate_kw = Ident::with_dummy_span(kw::Crate);
 
     let decls = {
         let local_path = |sp: Span, name| {

src/libsyntax_ext/standard_library_imports.rs

@@ -32,7 +32,7 @@ pub fn inject(
         // HACK(eddyb) gensym the injected crates on the Rust 2018 edition,
         // so they don't accidentally interfere with the new import paths.
         let orig_name_sym = Symbol::intern(orig_name_str);
-        let orig_name_ident = Ident::with_empty_ctxt(orig_name_sym);
+        let orig_name_ident = Ident::with_dummy_span(orig_name_sym);
         let (rename, orig_name) = if rust_2018 {
             (orig_name_ident.gensym(), Some(orig_name_sym))
         } else {
@@ -40,7 +40,7 @@ pub fn inject(
         };
         krate.module.items.insert(0, P(ast::Item {
             attrs: vec![attr::mk_attr_outer(
-                attr::mk_word_item(ast::Ident::with_empty_ctxt(sym::macro_use))
+                attr::mk_word_item(ast::Ident::with_dummy_span(sym::macro_use))
             )],
             vis: dummy_spanned(ast::VisibilityKind::Inherited),
             node: ast::ItemKind::ExternCrate(alt_std_name.or(orig_name)),
@@ -66,7 +66,7 @@ pub fn inject(
         vis: respan(span.shrink_to_lo(), ast::VisibilityKind::Inherited),
         node: ast::ItemKind::Use(P(ast::UseTree {
             prefix: ast::Path {
-                segments: iter::once(ast::Ident::with_empty_ctxt(kw::PathRoot))
+                segments: iter::once(ast::Ident::with_dummy_span(kw::PathRoot))
                     .chain(
                         [name, "prelude", "v1"].iter().cloned()
                             .map(ast::Ident::from_str)

src/libsyntax_ext/test_harness.rs

@@ -150,7 +150,7 @@ impl MutVisitor for EntryPointCleaner {
             EntryPointType::MainAttr |
             EntryPointType::Start =>
                 item.map(|ast::Item {id, ident, attrs, node, vis, span, tokens}| {
-                    let allow_ident = Ident::with_empty_ctxt(sym::allow);
+                    let allow_ident = Ident::with_dummy_span(sym::allow);
                     let dc_nested = attr::mk_nested_word_item(Ident::from_str("dead_code"));
                     let allow_dead_code_item = attr::mk_list_item(allow_ident, vec![dc_nested]);
                     let allow_dead_code = attr::mk_attr_outer(allow_dead_code_item);
@@ -191,7 +191,7 @@ fn mk_reexport_mod(cx: &mut TestCtxt<'_>,
                    tests: Vec<Ident>,
                    tested_submods: Vec<(Ident, Ident)>)
                    -> (P<ast::Item>, Ident) {
-    let super_ = Ident::with_empty_ctxt(kw::Super);
+    let super_ = Ident::with_dummy_span(kw::Super);
 
     let items = tests.into_iter().map(|r| {
         cx.ext_cx.item_use_simple(DUMMY_SP, dummy_spanned(ast::VisibilityKind::Public),
@@ -274,7 +274,7 @@ fn mk_main(cx: &mut TestCtxt<'_>) -> P<ast::Item> {
         [sym::main, sym::test, sym::rustc_attrs][..].into(),
     ));
     let ecx = &cx.ext_cx;
-    let test_id = Ident::with_empty_ctxt(sym::test);
+    let test_id = Ident::with_dummy_span(sym::test);
 
     // test::test_main_static(...)
     let mut test_runner = cx.test_runner.clone().unwrap_or(

src/libsyntax_pos/symbol.rs

@@ -744,25 +744,25 @@ impl Ident {
         Ident { name, span }
     }
 
-    /// Constructs a new identifier with an empty syntax context.
+    /// Constructs a new identifier with a dummy span.
     #[inline]
-    pub const fn with_empty_ctxt(name: Symbol) -> Ident {
+    pub const fn with_dummy_span(name: Symbol) -> Ident {
         Ident::new(name, DUMMY_SP)
     }
 
     #[inline]
     pub fn invalid() -> Ident {
-        Ident::with_empty_ctxt(kw::Invalid)
+        Ident::with_dummy_span(kw::Invalid)
     }
 
     /// Maps an interned string to an identifier with an empty syntax context.
     pub fn from_interned_str(string: InternedString) -> Ident {
-        Ident::with_empty_ctxt(string.as_symbol())
+        Ident::with_dummy_span(string.as_symbol())
     }
 
     /// Maps a string to an identifier with an empty span.
     pub fn from_str(string: &str) -> Ident {
-        Ident::with_empty_ctxt(Symbol::intern(string))
+        Ident::with_dummy_span(Symbol::intern(string))
     }
 
     /// Maps a string and a span to an identifier.