resolve: Privatize all resolver fields

src/librustc_interface/passes.rs

@@ -6,6 +6,7 @@ use log::{info, warn, log_enabled};
 use rustc::dep_graph::DepGraph;
 use rustc::hir;
 use rustc::hir::lowering::lower_crate;
+use rustc::hir::map::Definitions;
 use rustc::hir::def_id::{CrateNum, LOCAL_CRATE};
 use rustc::lint;
 use rustc::middle::{self, reachable, resolve_lifetime, stability};
@@ -154,7 +155,7 @@ pub fn configure_and_expand(
             }
         };
         box_region_allow_access!(for(), (&mut Resolver<'_>), (&mut resolver));
-        ExpansionResult::from_owned_resolver(resolver)
+        ExpansionResult::from_resolver_outputs(resolver.into_outputs())
     });
     result.map(|k| (k, resolver))
 }
@@ -165,42 +166,8 @@ pub struct ExpansionResult {
 }
 
 impl ExpansionResult {
-    fn from_owned_resolver(
-        resolver: Resolver<'_>,
-    ) -> Self {
-        ExpansionResult {
-            defs: Steal::new(resolver.definitions),
-            resolutions: Steal::new(Resolutions {
-                extern_crate_map: resolver.extern_crate_map,
-                export_map: resolver.export_map,
-                trait_map: resolver.trait_map,
-                glob_map: resolver.glob_map,
-                maybe_unused_trait_imports: resolver.maybe_unused_trait_imports,
-                maybe_unused_extern_crates: resolver.maybe_unused_extern_crates,
-                extern_prelude: resolver.extern_prelude.iter().map(|(ident, entry)| {
-                    (ident.name, entry.introduced_by_item)
-                }).collect(),
-            }),
-        }
-    }
-
-    pub fn from_resolver_ref(
-        resolver: &Resolver<'_>,
-    ) -> Self {
-        ExpansionResult {
-            defs: Steal::new(resolver.definitions.clone()),
-            resolutions: Steal::new(Resolutions {
-                extern_crate_map: resolver.extern_crate_map.clone(),
-                export_map: resolver.export_map.clone(),
-                trait_map: resolver.trait_map.clone(),
-                glob_map: resolver.glob_map.clone(),
-                maybe_unused_trait_imports: resolver.maybe_unused_trait_imports.clone(),
-                maybe_unused_extern_crates: resolver.maybe_unused_extern_crates.clone(),
-                extern_prelude: resolver.extern_prelude.iter().map(|(ident, entry)| {
-                    (ident.name, entry.introduced_by_item)
-                }).collect(),
-            }),
-        }
+    fn from_resolver_outputs((defs, resolutions): (Definitions, Resolutions)) -> Self {
+        ExpansionResult { defs: Steal::new(defs), resolutions: Steal::new(resolutions) }
     }
 }
 
@@ -213,7 +180,7 @@ impl BoxedResolver {
             Err(resolver) => {
                 let resolver = &*resolver;
                 resolver.borrow_mut().access(|resolver| {
-                    ExpansionResult::from_resolver_ref(resolver)
+                    ExpansionResult::from_resolver_outputs(resolver.clone_outputs())
                 })
             }
         }

src/librustc_resolve/lib.rs

@@ -831,12 +831,12 @@ pub struct Resolver<'a> {
     session: &'a Session,
     cstore: &'a CStore,
 
-    pub definitions: Definitions,
+    definitions: Definitions,
 
-    pub graph_root: Module<'a>,
+    graph_root: Module<'a>,
 
     prelude: Option<Module<'a>>,
-    pub extern_prelude: FxHashMap<Ident, ExternPreludeEntry<'a>>,
+    extern_prelude: FxHashMap<Ident, ExternPreludeEntry<'a>>,
 
     /// N.B., this is used only for better diagnostics, not name resolution itself.
     has_self: FxHashSet<DefId>,
@@ -869,9 +869,9 @@ pub struct Resolver<'a> {
     label_res_map: NodeMap<NodeId>,
 
     /// `CrateNum` resolutions of `extern crate` items.
-    pub extern_crate_map: NodeMap<CrateNum>,
-    pub export_map: ExportMap<NodeId>,
-    pub trait_map: TraitMap,
+    extern_crate_map: NodeMap<CrateNum>,
+    export_map: ExportMap<NodeId>,
+    trait_map: TraitMap,
 
     /// A map from nodes to anonymous modules.
     /// Anonymous modules are pseudo-modules that are implicitly created around items
@@ -898,11 +898,11 @@ pub struct Resolver<'a> {
     underscore_disambiguator: u32,
 
     /// Maps glob imports to the names of items actually imported.
-    pub glob_map: GlobMap,
+    glob_map: GlobMap,
 
     used_imports: FxHashSet<(NodeId, Namespace)>,
-    pub maybe_unused_trait_imports: NodeSet,
-    pub maybe_unused_extern_crates: Vec<(NodeId, Span)>,
+    maybe_unused_trait_imports: NodeSet,
+    maybe_unused_extern_crates: Vec<(NodeId, Span)>,
 
     /// Privacy errors are delayed until the end in order to deduplicate them.
     privacy_errors: Vec<PrivacyError<'a>>,
@@ -920,7 +920,7 @@ pub struct Resolver<'a> {
     macro_names: FxHashSet<Ident>,
     builtin_macros: FxHashMap<Name, SyntaxExtension>,
     macro_use_prelude: FxHashMap<Name, &'a NameBinding<'a>>,
-    pub all_macros: FxHashMap<Name, Res>,
+    all_macros: FxHashMap<Name, Res>,
     macro_map: FxHashMap<DefId, Lrc<SyntaxExtension>>,
     dummy_ext_bang: Lrc<SyntaxExtension>,
     dummy_ext_derive: Lrc<SyntaxExtension>,
@@ -1236,6 +1236,40 @@ impl<'a> Resolver<'a> {
         Default::default()
     }
 
+    pub fn into_outputs(self) -> (Definitions, ty::Resolutions) {
+        (
+            self.definitions,
+            ty::Resolutions {
+                extern_crate_map: self.extern_crate_map,
+                export_map: self.export_map,
+                trait_map: self.trait_map,
+                glob_map: self.glob_map,
+                maybe_unused_trait_imports: self.maybe_unused_trait_imports,
+                maybe_unused_extern_crates: self.maybe_unused_extern_crates,
+                extern_prelude: self.extern_prelude.iter().map(|(ident, entry)| {
+                    (ident.name, entry.introduced_by_item)
+                }).collect(),
+            },
+        )
+    }
+
+    pub fn clone_outputs(&self) -> (Definitions, ty::Resolutions) {
+        (
+            self.definitions.clone(),
+            ty::Resolutions {
+                extern_crate_map: self.extern_crate_map.clone(),
+                export_map: self.export_map.clone(),
+                trait_map: self.trait_map.clone(),
+                glob_map: self.glob_map.clone(),
+                maybe_unused_trait_imports: self.maybe_unused_trait_imports.clone(),
+                maybe_unused_extern_crates: self.maybe_unused_extern_crates.clone(),
+                extern_prelude: self.extern_prelude.iter().map(|(ident, entry)| {
+                    (ident.name, entry.introduced_by_item)
+                }).collect(),
+            },
+        )
+    }
+
     fn non_macro_attr(&self, mark_used: bool) -> Lrc<SyntaxExtension> {
         self.non_macro_attrs[mark_used as usize].clone()
     }
@@ -2808,6 +2842,16 @@ impl<'a> Resolver<'a> {
         seg.id = self.session.next_node_id();
         seg
     }
+
+    // For rustdoc.
+    pub fn graph_root(&self) -> Module<'a> {
+        self.graph_root
+    }
+
+    // For rustdoc.
+    pub fn all_macros(&self) -> &FxHashMap<Name, Res> {
+        &self.all_macros
+    }
 }
 
 fn names_to_string(names: &[Name]) -> String {

src/librustdoc/passes/collect_intra_doc_links.rs

@@ -432,13 +432,13 @@ fn macro_resolve(cx: &DocContext<'_>, path_str: &str) -> Option<Res> {
     let path = ast::Path::from_ident(Ident::from_str(path_str));
     cx.enter_resolver(|resolver| {
         if let Ok((Some(ext), res)) = resolver.resolve_macro_path(
-            &path, None, &ParentScope::module(resolver.graph_root), false, false
+            &path, None, &ParentScope::module(resolver.graph_root()), false, false
         ) {
             if let SyntaxExtensionKind::LegacyBang { .. } = ext.kind {
                 return Some(res.map_id(|_| panic!("unexpected id")));
             }
         }
-        if let Some(res) = resolver.all_macros.get(&Symbol::intern(path_str)) {
+        if let Some(res) = resolver.all_macros().get(&Symbol::intern(path_str)) {
             return Some(res.map_id(|_| panic!("unexpected id")));
         }
         None