2 files changed, 45 insertions, 4 deletions

diff --git a/crates/ra_ide_db/src/change.rs b/crates/ra_ide_db/src/change.rs
index 32d9a8d1f..b13df8b85 100644
--- a/crates/ra_ide_db/src/change.rs
+++ b/crates/ra_ide_db/src/change.rs
@@ -190,11 +190,24 @@ impl RootDatabase {
                 let q: $q = Default::default();
                 let name = format!("{:?} (deps)", q);
                 acc.push((name, before - after));
+
+                let before = memory_usage().allocated;
+                $q.in_db(self).purge();
+                let after = memory_usage().allocated;
+                let q: $q = Default::default();
+                let name = format!("{:?} (purge)", q);
+                acc.push((name, before - after));
             )*}
         }
         sweep_each_query![
             // SourceDatabase
             ra_db::ParseQuery
+            ra_db::CrateGraphQuery
+
+            // SourceDatabaseExt
+            ra_db::FileTextQuery
+            ra_db::FileSourceRootQuery
+            ra_db::SourceRootQuery
             ra_db::SourceRootCratesQuery
 
             // AstDatabase
@@ -242,15 +255,24 @@ impl RootDatabase {
             hir::db::TraitImplsInCrateQuery
             hir::db::TraitImplsInDepsQuery
             hir::db::AssociatedTyDataQuery
+            hir::db::AssociatedTyDataQuery
             hir::db::TraitDatumQuery
             hir::db::StructDatumQuery
             hir::db::ImplDatumQuery
+            hir::db::FnDefDatumQuery
+            hir::db::ReturnTypeImplTraitsQuery
+            hir::db::InternCallableDefQuery
+            hir::db::InternTypeParamIdQuery
+            hir::db::InternImplTraitIdQuery
+            hir::db::InternClosureQuery
             hir::db::AssociatedTyValueQuery
             hir::db::TraitSolveQuery
-            hir::db::ReturnTypeImplTraitsQuery
 
             // SymbolsDatabase
             crate::symbol_index::FileSymbolsQuery
+            crate::symbol_index::LibrarySymbolsQuery
+            crate::symbol_index::LocalRootsQuery
+            crate::symbol_index::LibraryRootsQuery
 
             // LineIndexDatabase
             crate::LineIndexQuery
diff --git a/crates/ra_ide_db/src/defs.rs b/crates/ra_ide_db/src/defs.rs
index 66c048714..b51000b03 100644
--- a/crates/ra_ide_db/src/defs.rs
+++ b/crates/ra_ide_db/src/defs.rs
@@ -12,7 +12,7 @@ use hir::{
 use ra_prof::profile;
 use ra_syntax::{
     ast::{self, AstNode},
-    match_ast,
+    match_ast, SyntaxNode,
 };
 
 use crate::RootDatabase;
@@ -123,8 +123,27 @@ pub fn classify_name(sema: &Semantics<RootDatabase>, name: &ast::Name) -> Option
                 let use_tree = it.syntax().parent().and_then(ast::UseTree::cast)?;
                 let path = use_tree.path()?;
                 let path_segment = path.segment()?;
-                let name_ref = path_segment.name_ref()?;
-                let name_ref_class = classify_name_ref(sema, &name_ref)?;
+                let name_ref_class = path_segment
+                    .name_ref()
+                    // The rename might be from a `self` token, so fallback to the name higher
+                    // in the use tree.
+                    .or_else(||{
+                        if path_segment.self_token().is_none() {
+                            return None;
+                        }
+
+                        let use_tree = use_tree
+                            .syntax()
+                            .parent()
+                            .as_ref()
+                            // Skip over UseTreeList
+                            .and_then(SyntaxNode::parent)
+                            .and_then(ast::UseTree::cast)?;
+                        let path = use_tree.path()?;
+                        let path_segment = path.segment()?;
+                        path_segment.name_ref()
+                    })
+                    .and_then(|name_ref| classify_name_ref(sema, &name_ref))?;
 
                 Some(NameClass::Definition(name_ref_class.definition()))
             },