Fix rebase

src/librustc_resolve/build_reduced_graph.rs

@@ -126,16 +126,18 @@ impl<'a, 'cl> Resolver<'a, 'cl> {
                parent_prefix, use_tree, nested);
 
         let mut prefix_iter = parent_prefix.iter().cloned()
-            .chain(use_tree.prefix.segments.iter().map(|seg| seg.ident)).peekable();
+            .chain(use_tree.prefix.segments.iter().map(|seg| seg.into())).peekable();
 
         // On 2015 edition imports are resolved as crate-relative by default,
         // so prefixes are prepended with crate root segment if necessary.
         // The root is prepended lazily, when the first non-empty prefix or terminating glob
         // appears, so imports in braced groups can have roots prepended independently.
         let is_glob = if let ast::UseTreeKind::Glob = use_tree.kind { true } else { false };
         let crate_root = if !self.session.rust_2018() &&
-                prefix_iter.peek().map_or(is_glob, |ident| !ident.is_path_segment_keyword()) {
-            Some(Ident::new(keywords::CrateRoot.name(), use_tree.prefix.span.shrink_to_lo()))
+                prefix_iter.peek().map_or(is_glob, |seg| !seg.ident.is_path_segment_keyword()) {
+            Some(Segment::from_ident(Ident::new(
+                keywords::CrateRoot.name(), use_tree.prefix.span.shrink_to_lo()
+            )))
         } else {
             None
         };

src/librustc_resolve/error_reporting.rs

@@ -11,7 +11,6 @@
 use {CrateLint, PathResult, Segment};
 use macros::ParentScope;
 
-use syntax::ast::Ident;
 use syntax::symbol::keywords;
 use syntax_pos::Span;
 
@@ -31,12 +30,12 @@ impl<'a, 'b:'a, 'c: 'b> ImportResolver<'a, 'b, 'c> {
         match (path.get(0), path.get(1)) {
             // `{{root}}::ident::...` on both editions.
             // On 2015 `{{root}}` is usually added implicitly.
-            (Some(fst), Some(snd)) if fst.name == keywords::CrateRoot.name() &&
-                                      !snd.is_path_segment_keyword() => {}
+            (Some(fst), Some(snd)) if fst.ident.name == keywords::CrateRoot.name() &&
+                                      !snd.ident.is_path_segment_keyword() => {}
             // `ident::...` on 2018
-            (Some(fst), _) if self.session.rust_2018() && !fst.is_path_segment_keyword() => {
+            (Some(fst), _) if self.session.rust_2018() && !fst.ident.is_path_segment_keyword() => {
                 // Insert a placeholder that's later replaced by `self`/`super`/etc.
-                path.insert(0, keywords::Invalid.ident());
+                path.insert(0, Segment::from_ident(keywords::Invalid.ident()));
             }
             _ => return None,
         }

src/librustc_resolve/lib.rs

@@ -1747,8 +1747,8 @@ impl<'a, 'crateloader> Resolver<'a, 'crateloader> {
         let segments = &path.segments;
         let path = Segment::from_path(&path);
         // FIXME (Manishearth): Intra doc links won't get warned of epoch changes
-        match self.resolve_path_without_parent_scope(&path, Some(namespace), true, span,
-                                                     CrateLint::No) {
+        let def = match self.resolve_path_without_parent_scope(&path, Some(namespace), true,
+                                                               span, CrateLint::No) {
             PathResult::Module(ModuleOrUniformRoot::Module(module)) =>
                 module.def().unwrap(),
             PathResult::NonModule(path_res) if path_res.unresolved_segments() == 0 =>

src/librustc_resolve/macros.rs

@@ -9,9 +9,9 @@
 // except according to those terms.
 
 use {AmbiguityError, AmbiguityKind, AmbiguityErrorMisc};
-use {CrateLint, Resolver, ResolutionError, Weak};
+use {CrateLint, Resolver, ResolutionError, Segment, Weak};
 use {Module, ModuleKind, NameBinding, NameBindingKind, PathResult, ToNameBinding};
-use {is_known_tool, names_to_string, resolve_error};
+use {is_known_tool, resolve_error};
 use ModuleOrUniformRoot;
 use Namespace::{self, *};
 use build_reduced_graph::{BuildReducedGraphVisitor, IsMacroExport};
@@ -946,7 +946,7 @@ impl<'a, 'cl> Resolver<'a, 'cl> {
     pub fn finalize_current_module_macro_resolutions(&mut self) {
         let module = self.current_module;
 
-        let check_consistency = |this: &mut Self, path: &[Ident], span,
+        let check_consistency = |this: &mut Self, path: &[Segment], span,
                                  kind: MacroKind, initial_def, def| {
             if let Some(initial_def) = initial_def {
                 if def != initial_def && def != Def::Err && this.ambiguity_errors.is_empty() {
@@ -965,7 +965,7 @@ impl<'a, 'cl> Resolver<'a, 'cl> {
                 // less informative error if the privacy error is reported elsewhere.
                 if this.privacy_errors.is_empty() {
                     let msg = format!("cannot determine resolution for the {} `{}`",
-                                        kind.descr(), names_to_string(path));
+                                        kind.descr(), Segment::names_to_string(path));
                     let msg_note = "import resolution is stuck, try simplifying macro imports";
                     this.session.struct_span_err(span, &msg).note(msg_note).emit();
                 }
@@ -1007,7 +1007,8 @@ impl<'a, 'cl> Resolver<'a, 'cl> {
                         initial_binding.def_ignoring_ambiguity()
                     });
                     let def = binding.def_ignoring_ambiguity();
-                    check_consistency(self, &[ident], ident.span, kind, initial_def, def);
+                    let seg = Segment::from_ident(ident);
+                    check_consistency(self, &[seg], ident.span, kind, initial_def, def);
                 }
                 Err(..) => {
                     assert!(initial_binding.is_none());

src/test/ui/imports/issue-55457.stderr

@@ -8,7 +8,7 @@ error[E0432]: unresolved import `non_existent`
   --> $DIR/issue-55457.rs:2:5
    |
 LL | use non_existent::non_existent; //~ ERROR unresolved import `non_existent`
-   |     ^^^^^^^^^^^^ Maybe a missing `extern crate non_existent;`?
+   |     ^^^^^^^^^^^^ maybe a missing `extern crate non_existent;`?
 
 error: cannot determine resolution for the derive macro `NonExistent`
   --> $DIR/issue-55457.rs:5:10