Collect visibility of items during nameres

crates/ra_hir_def/src/nameres/path_resolution.rs

@@ -21,6 +21,7 @@ use crate::{
     nameres::{BuiltinShadowMode, CrateDefMap},
     path::{ModPath, PathKind},
     per_ns::PerNs,
+    visibility::{ResolvedVisibility, Visibility},
     AdtId, CrateId, EnumVariantId, LocalModuleId, ModuleDefId, ModuleId,
 };
 
@@ -64,6 +65,32 @@ impl CrateDefMap {
         self.extern_prelude.get(name).map_or(PerNs::none(), |&it| PerNs::types(it))
     }
 
+    pub(crate) fn resolve_visibility(
+        &self,
+        db: &impl DefDatabase,
+        original_module: LocalModuleId,
+        visibility: &Visibility,
+    ) -> Option<ResolvedVisibility> {
+        match visibility {
+            Visibility::Module(path) => {
+                let (result, remaining) =
+                    self.resolve_path(db, original_module, &path, BuiltinShadowMode::Module);
+                if remaining.is_some() {
+                    return None;
+                }
+                let types = result.take_types()?;
+                match types {
+                    ModuleDefId::ModuleId(m) => Some(ResolvedVisibility::Module(m)),
+                    _ => {
+                        // error: visibility needs to refer to module
+                        None
+                    }
+                }
+            }
+            Visibility::Public => Some(ResolvedVisibility::Public),
+        }
+    }
+
     // Returns Yes if we are sure that additions to `ItemMap` wouldn't change
     // the result.
     pub(super) fn resolve_path_fp_with_macro(

crates/ra_hir_def/src/nameres/raw.rs

@@ -16,12 +16,15 @@ use hir_expand::{
 use ra_arena::{impl_arena_id, Arena, RawId};
 use ra_prof::profile;
 use ra_syntax::{
-    ast::{self, AttrsOwner, NameOwner},
+    ast::{self, AttrsOwner, NameOwner, VisibilityOwner},
     AstNode,
 };
 use test_utils::tested_by;
 
-use crate::{attr::Attrs, db::DefDatabase, path::ModPath, FileAstId, HirFileId, InFile};
+use crate::{
+    attr::Attrs, db::DefDatabase, path::ModPath, visibility::Visibility, FileAstId, HirFileId,
+    InFile,
+};
 
 /// `RawItems` is a set of top-level items in a file (except for impls).
 ///
@@ -138,6 +141,7 @@ pub struct ImportData {
     pub(super) is_prelude: bool,
     pub(super) is_extern_crate: bool,
     pub(super) is_macro_use: bool,
+    pub(super) visibility: Visibility,
 }
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
@@ -148,6 +152,7 @@ impl_arena_id!(Def);
 pub(super) struct DefData {
     pub(super) name: Name,
     pub(super) kind: DefKind,
+    pub(super) visibility: Visibility,
 }
 
 #[derive(Debug, PartialEq, Eq, Clone, Copy)]
@@ -218,6 +223,7 @@ impl RawItemsCollector {
 
     fn add_item(&mut self, current_module: Option<Module>, item: ast::ModuleItem) {
         let attrs = self.parse_attrs(&item);
+        let visibility = Visibility::from_ast_with_hygiene(item.visibility(), &self.hygiene);
         let (kind, name) = match item {
             ast::ModuleItem::Module(module) => {
                 self.add_module(current_module, module);
@@ -266,7 +272,7 @@ impl RawItemsCollector {
         };
         if let Some(name) = name {
             let name = name.as_name();
-            let def = self.raw_items.defs.alloc(DefData { name, kind });
+            let def = self.raw_items.defs.alloc(DefData { name, kind, visibility });
             self.push_item(current_module, attrs, RawItemKind::Def(def));
         }
     }
@@ -302,6 +308,7 @@ impl RawItemsCollector {
         // FIXME: cfg_attr
         let is_prelude = use_item.has_atom_attr("prelude_import");
         let attrs = self.parse_attrs(&use_item);
+        let visibility = Visibility::from_ast_with_hygiene(use_item.visibility(), &self.hygiene);
 
         let mut buf = Vec::new();
         ModPath::expand_use_item(
@@ -315,6 +322,7 @@ impl RawItemsCollector {
                     is_prelude,
                     is_extern_crate: false,
                     is_macro_use: false,
+                    visibility: visibility.clone(),
                 };
                 buf.push(import_data);
             },
@@ -331,6 +339,8 @@ impl RawItemsCollector {
     ) {
         if let Some(name_ref) = extern_crate.name_ref() {
             let path = ModPath::from_name_ref(&name_ref);
+            let visibility =
+                Visibility::from_ast_with_hygiene(extern_crate.visibility(), &self.hygiene);
             let alias = extern_crate.alias().and_then(|a| a.name()).map(|it| it.as_name());
             let attrs = self.parse_attrs(&extern_crate);
             // FIXME: cfg_attr
@@ -342,6 +352,7 @@ impl RawItemsCollector {
                 is_prelude: false,
                 is_extern_crate: true,
                 is_macro_use,
+                visibility,
             };
             self.push_import(current_module, attrs, import_data);
         }

crates/ra_hir_def/src/resolver.rs

@@ -238,15 +238,12 @@ impl Resolver {
         visibility: &Visibility,
     ) -> Option<ResolvedVisibility> {
         match visibility {
-            Visibility::Module(mod_path) => {
-                let resolved = self.resolve_module_path_in_items(db, &mod_path).take_types()?;
-                match resolved {
-                    ModuleDefId::ModuleId(m) => Some(ResolvedVisibility::Module(m)),
-                    _ => {
-                        // error: visibility needs to refer to module
-                        None
-                    }
-                }
+            Visibility::Module(_) => {
+                let (item_map, module) = match self.module() {
+                    Some(it) => it,
+                    None => return None,
+                };
+                item_map.resolve_visibility(db, module, visibility)
             }
             Visibility::Public => Some(ResolvedVisibility::Public),
         }

crates/ra_hir_def/src/visibility.rs

@@ -4,7 +4,7 @@ use std::sync::Arc;
 
 use either::Either;
 
-use hir_expand::InFile;
+use hir_expand::{hygiene::Hygiene, InFile};
 use ra_syntax::ast::{self, VisibilityOwner};
 
 use crate::{
@@ -73,14 +73,20 @@ impl Visibility {
     }
 
     fn from_ast(db: &impl DefDatabase, node: InFile<Option<ast::Visibility>>) -> Visibility {
-        let file_id = node.file_id;
-        let node = match node.value {
+        Self::from_ast_with_hygiene(node.value, &Hygiene::new(db, node.file_id))
+    }
+
+    pub(crate) fn from_ast_with_hygiene(
+        node: Option<ast::Visibility>,
+        hygiene: &Hygiene,
+    ) -> Visibility {
+        let node = match node {
             None => return Visibility::private(),
             Some(node) => node,
         };
         match node.kind() {
             ast::VisibilityKind::In(path) => {
-                let path = ModPath::from_src(path, &hir_expand::hygiene::Hygiene::new(db, file_id));
+                let path = ModPath::from_src(path, hygiene);
                 let path = match path {
                     None => return Visibility::private(),
                     Some(path) => path,

crates/ra_syntax/src/ast/generated.rs

@@ -1064,6 +1064,7 @@ impl AstNode for ExternCrateItem {
     }
 }
 impl ast::AttrsOwner for ExternCrateItem {}
+impl ast::VisibilityOwner for ExternCrateItem {}
 impl ExternCrateItem {
     pub fn name_ref(&self) -> Option<NameRef> {
         AstChildren::new(&self.syntax).next()
@@ -2006,6 +2007,7 @@ impl AstNode for ModuleItem {
     }
 }
 impl ast::AttrsOwner for ModuleItem {}
+impl ast::VisibilityOwner for ModuleItem {}
 impl ModuleItem {}
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub struct Name {
@@ -3893,6 +3895,7 @@ impl AstNode for UseItem {
     }
 }
 impl ast::AttrsOwner for UseItem {}
+impl ast::VisibilityOwner for UseItem {}
 impl UseItem {
     pub fn use_tree(&self) -> Option<UseTree> {
         AstChildren::new(&self.syntax).next()

crates/ra_syntax/src/grammar.ron

@@ -412,7 +412,7 @@ Grammar(
         "ModuleItem": (
             enum: ["StructDef", "UnionDef", "EnumDef", "FnDef", "TraitDef", "TypeAliasDef", "ImplBlock",
                    "UseItem", "ExternCrateItem", "ConstDef", "StaticDef", "Module" ],
-            traits: ["AttrsOwner"],
+            traits: ["AttrsOwner", "VisibilityOwner"],
         ),
         "ImplItem": (
             enum: ["FnDef", "TypeAliasDef", "ConstDef"],
@@ -683,7 +683,7 @@ Grammar(
             ]
         ),
         "UseItem": (
-            traits: ["AttrsOwner"],
+            traits: ["AttrsOwner", "VisibilityOwner"],
             options: [ "UseTree" ],
         ),
         "UseTree": (
@@ -696,7 +696,7 @@ Grammar(
             collections: [("use_trees", "UseTree")]
         ),
         "ExternCrateItem": (
-            traits: ["AttrsOwner"],
+            traits: ["AttrsOwner", "VisibilityOwner"],
             options: ["NameRef", "Alias"],
         ),
         "ArgList": (