Don't track imports

2 files changed, 26 insertions, 48 deletions

diff --git a/crates/ra_hir_def/src/item_scope.rs b/crates/ra_hir_def/src/item_scope.rs
index 6b9be8325..5c14fefff 100644
--- a/crates/ra_hir_def/src/item_scope.rs
+++ b/crates/ra_hir_def/src/item_scope.rs
@@ -5,7 +5,7 @@ use hir_expand::name::Name;
 use once_cell::sync::Lazy;
 use rustc_hash::FxHashMap;
 
-use crate::{per_ns::PerNs, BuiltinType, ImplId, LocalImportId, MacroDefId, ModuleDefId, TraitId};
+use crate::{per_ns::PerNs, BuiltinType, ImplId, MacroDefId, ModuleDefId, TraitId};
 
 #[derive(Debug, Default, PartialEq, Eq)]
 pub struct ItemScope {
@@ -30,7 +30,7 @@ static BUILTIN_SCOPE: Lazy<FxHashMap<Name, Resolution>> = Lazy::new(|| {
     BuiltinType::ALL
         .iter()
         .map(|(name, ty)| {
-            (name.clone(), Resolution { def: PerNs::types(ty.clone().into()), import: None })
+            (name.clone(), Resolution { def: PerNs::types(ty.clone().into()), declaration: false })
         })
         .collect()
 });
@@ -53,11 +53,9 @@ impl ItemScope {
     }
 
     pub fn declarations(&self) -> impl Iterator<Item = ModuleDefId> + '_ {
-        self.entries()
-            .filter_map(|(_name, res)| if res.import.is_none() { Some(res.def) } else { None })
-            .flat_map(|per_ns| {
-                per_ns.take_types().into_iter().chain(per_ns.take_values().into_iter())
-            })
+        self.entries().filter(|(_name, res)| res.declaration).flat_map(|(_name, res)| {
+            res.def.take_types().into_iter().chain(res.def.take_values().into_iter())
+        })
     }
 
     pub fn impls(&self) -> impl Iterator<Item = ImplId> + ExactSizeIterator + '_ {
@@ -112,38 +110,26 @@ impl ItemScope {
         self.legacy_macros.insert(name, mac);
     }
 
-    pub(crate) fn push_res(
-        &mut self,
-        name: Name,
-        res: &Resolution,
-        import: Option<LocalImportId>,
-    ) -> bool {
+    pub(crate) fn push_res(&mut self, name: Name, res: &Resolution, declaration: bool) -> bool {
         let mut changed = false;
         let existing = self.items.entry(name.clone()).or_default();
 
         if existing.def.types.is_none() && res.def.types.is_some() {
             existing.def.types = res.def.types;
-            existing.import = import.or(res.import);
+            existing.declaration |= declaration;
             changed = true;
         }
         if existing.def.values.is_none() && res.def.values.is_some() {
             existing.def.values = res.def.values;
-            existing.import = import.or(res.import);
+            existing.declaration |= declaration;
             changed = true;
         }
         if existing.def.macros.is_none() && res.def.macros.is_some() {
             existing.def.macros = res.def.macros;
-            existing.import = import.or(res.import);
+            existing.declaration |= declaration;
             changed = true;
         }
 
-        if existing.def.is_none()
-            && res.def.is_none()
-            && existing.import.is_none()
-            && res.import.is_some()
-        {
-            existing.import = res.import;
-        }
         changed
     }
 
@@ -160,6 +146,5 @@ impl ItemScope {
 pub struct Resolution {
     /// None for unresolved
     pub def: PerNs,
-    /// ident by which this is imported into local scope.
-    pub import: Option<LocalImportId>,
+    pub declaration: bool,
 }
diff --git a/crates/ra_hir_def/src/nameres/collector.rs b/crates/ra_hir_def/src/nameres/collector.rs
index 45199fa11..e43aafedb 100644
--- a/crates/ra_hir_def/src/nameres/collector.rs
+++ b/crates/ra_hir_def/src/nameres/collector.rs
@@ -218,8 +218,7 @@ where
         if export {
             self.update(
                 self.def_map.root,
-                None,
-                &[(name, Resolution { def: PerNs::macros(macro_), import: None })],
+                &[(name, Resolution { def: PerNs::macros(macro_), declaration: false })],
             );
         }
     }
@@ -374,7 +373,7 @@ where
                         // Module scoped macros is included
                         let items = scope.collect_resolutions();
 
-                        self.update(module_id, Some(import_id), &items);
+                        self.update(module_id, &items);
                     } else {
                         // glob import from same crate => we do an initial
                         // import, and then need to propagate any further
@@ -384,7 +383,7 @@ where
                         // Module scoped macros is included
                         let items = scope.collect_resolutions();
 
-                        self.update(module_id, Some(import_id), &items);
+                        self.update(module_id, &items);
                         // record the glob import in case we add further items
                         let glob = self.glob_imports.entry(m.local_id).or_default();
                         if !glob.iter().any(|it| *it == (module_id, import_id)) {
@@ -404,12 +403,12 @@ where
                             let variant = EnumVariantId { parent: e, local_id };
                             let res = Resolution {
                                 def: PerNs::both(variant.into(), variant.into()),
-                                import: Some(import_id),
+                                declaration: false,
                             };
                             (name, res)
                         })
                         .collect::<Vec<_>>();
-                    self.update(module_id, Some(import_id), &resolutions);
+                    self.update(module_id, &resolutions);
                 }
                 Some(d) => {
                     log::debug!("glob import {:?} from non-module/enum {:?}", import, d);
@@ -431,27 +430,21 @@ where
                         }
                     }
 
-                    let resolution = Resolution { def, import: Some(import_id) };
-                    self.update(module_id, Some(import_id), &[(name, resolution)]);
+                    let resolution = Resolution { def, declaration: false };
+                    self.update(module_id, &[(name, resolution)]);
                 }
                 None => tested_by!(bogus_paths),
             }
         }
     }
 
-    fn update(
-        &mut self,
-        module_id: LocalModuleId,
-        import: Option<LocalImportId>,
-        resolutions: &[(Name, Resolution)],
-    ) {
-        self.update_recursive(module_id, import, resolutions, 0)
+    fn update(&mut self, module_id: LocalModuleId, resolutions: &[(Name, Resolution)]) {
+        self.update_recursive(module_id, resolutions, 0)
     }
 
     fn update_recursive(
         &mut self,
         module_id: LocalModuleId,
-        import: Option<LocalImportId>,
         resolutions: &[(Name, Resolution)],
         depth: usize,
     ) {
@@ -462,7 +455,7 @@ where
         let scope = &mut self.def_map.modules[module_id].scope;
         let mut changed = false;
         for (name, res) in resolutions {
-            changed |= scope.push_res(name.clone(), res, import);
+            changed |= scope.push_res(name.clone(), res, depth == 0 && res.declaration);
         }
 
         if !changed {
@@ -475,9 +468,9 @@ where
             .flat_map(|v| v.iter())
             .cloned()
             .collect::<Vec<_>>();
-        for (glob_importing_module, glob_import) in glob_imports {
+        for (glob_importing_module, _glob_import) in glob_imports {
             // We pass the glob import so that the tracked import in those modules is that glob import
-            self.update_recursive(glob_importing_module, Some(glob_import), resolutions, depth + 1);
+            self.update_recursive(glob_importing_module, resolutions, depth + 1);
         }
     }
 
@@ -719,9 +712,9 @@ where
             def: PerNs::types(
                 ModuleId { krate: self.def_collector.def_map.krate, local_id: res }.into(),
             ),
-            import: None,
+            declaration: true,
         };
-        self.def_collector.update(self.module_id, None, &[(name, resolution)]);
+        self.def_collector.update(self.module_id, &[(name, resolution)]);
         res
     }
 
@@ -791,8 +784,8 @@ where
                 PerNs::types(def.into())
             }
         };
-        let resolution = Resolution { def, import: None };
-        self.def_collector.update(self.module_id, None, &[(name, resolution)])
+        let resolution = Resolution { def, declaration: true };
+        self.def_collector.update(self.module_id, &[(name, resolution)])
     }
 
     fn collect_derives(&mut self, attrs: &Attrs, def: &raw::DefData) {