8 files changed, 43 insertions, 107 deletions

diff --git a/crates/ra_hir/src/db.rs b/crates/ra_hir/src/db.rs
index bfae3660b..f5ffd64fa 100644
--- a/crates/ra_hir/src/db.rs
+++ b/crates/ra_hir/src/db.rs
@@ -4,8 +4,8 @@ pub use hir_def::db::{
     BodyQuery, BodyWithSourceMapQuery, ConstDataQuery, CrateDefMapQuery, CrateLangItemsQuery,
     DefDatabase, DefDatabaseStorage, DocumentationQuery, EnumDataQuery, ExprScopesQuery,
     FunctionDataQuery, GenericParamsQuery, ImplDataQuery, InternDatabase, InternDatabaseStorage,
-    LangItemQuery, ModuleLangItemsQuery, RawItemsQuery, RawItemsWithSourceMapQuery,
-    StaticDataQuery, StructDataQuery, TraitDataQuery, TypeAliasDataQuery,
+    LangItemQuery, ModuleLangItemsQuery, RawItemsQuery, StaticDataQuery, StructDataQuery,
+    TraitDataQuery, TypeAliasDataQuery,
 };
 pub use hir_expand::db::{
     AstDatabase, AstDatabaseStorage, AstIdMapQuery, MacroArgQuery, MacroDefQuery, MacroExpandQuery,
diff --git a/crates/ra_hir_def/src/db.rs b/crates/ra_hir_def/src/db.rs
index 98bff6cb7..c55fd4111 100644
--- a/crates/ra_hir_def/src/db.rs
+++ b/crates/ra_hir_def/src/db.rs
@@ -13,10 +13,7 @@ use crate::{
     docs::Documentation,
     generics::GenericParams,
     lang_item::{LangItemTarget, LangItems},
-    nameres::{
-        raw::{ImportSourceMap, RawItems},
-        CrateDefMap,
-    },
+    nameres::{raw::RawItems, CrateDefMap},
     AttrDefId, ConstId, ConstLoc, DefWithBodyId, EnumId, EnumLoc, FunctionId, FunctionLoc,
     GenericDefId, ImplId, ImplLoc, ModuleId, StaticId, StaticLoc, StructId, StructLoc, TraitId,
     TraitLoc, TypeAliasId, TypeAliasLoc, UnionId, UnionLoc,
@@ -46,12 +43,6 @@ pub trait InternDatabase: SourceDatabase {
 
 #[salsa::query_group(DefDatabaseStorage)]
 pub trait DefDatabase: InternDatabase + AstDatabase {
-    #[salsa::invoke(RawItems::raw_items_with_source_map_query)]
-    fn raw_items_with_source_map(
-        &self,
-        file_id: HirFileId,
-    ) -> (Arc<RawItems>, Arc<ImportSourceMap>);
-
     #[salsa::invoke(RawItems::raw_items_query)]
     fn raw_items(&self, file_id: HirFileId) -> Arc<RawItems>;
 
diff --git a/crates/ra_hir_def/src/item_scope.rs b/crates/ra_hir_def/src/item_scope.rs
index ad104bb3d..9e082c5f7 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()), import: false })
         })
         .collect()
 });
@@ -54,7 +54,7 @@ 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 })
+            .filter_map(|(_name, res)| if !res.import { Some(res.def) } else { None })
             .flat_map(|per_ns| {
                 per_ns.take_types().into_iter().chain(per_ns.take_values().into_iter())
             })
@@ -112,36 +112,27 @@ 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, import: 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.import = import || res.import;
             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.import = import || res.import;
             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.import = import || res.import;
             changed = true;
         }
 
-        if existing.def.is_none()
-            && res.def.is_none()
-            && existing.import.is_none()
-            && res.import.is_some()
-        {
+        if existing.def.is_none() && res.def.is_none() && !existing.import && res.import {
             existing.import = res.import;
         }
         changed
@@ -160,6 +151,5 @@ impl ItemScope {
 pub struct Resolution {
     /// None for unresolved
     pub def: PerNs,
-    /// ident by which this is imported into local scope.
-    pub(crate) import: Option<LocalImportId>,
+    pub(crate) import: bool,
 }
diff --git a/crates/ra_hir_def/src/lib.rs b/crates/ra_hir_def/src/lib.rs
index 8cb5ab8d0..f6c7f38d1 100644
--- a/crates/ra_hir_def/src/lib.rs
+++ b/crates/ra_hir_def/src/lib.rs
@@ -52,10 +52,6 @@ use crate::body::Expander;
 use crate::builtin_type::BuiltinType;
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
-pub(crate) struct LocalImportId(RawId);
-impl_arena_id!(LocalImportId);
-
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub struct ModuleId {
     pub krate: CrateId,
     pub local_id: LocalModuleId,
diff --git a/crates/ra_hir_def/src/nameres/collector.rs b/crates/ra_hir_def/src/nameres/collector.rs
index 45199fa11..2b194f488 100644
--- a/crates/ra_hir_def/src/nameres/collector.rs
+++ b/crates/ra_hir_def/src/nameres/collector.rs
@@ -26,8 +26,7 @@ use crate::{
     path::{ModPath, PathKind},
     per_ns::PerNs,
     AdtId, AstId, ConstLoc, ContainerId, EnumLoc, EnumVariantId, FunctionLoc, ImplLoc, Intern,
-    LocalImportId, LocalModuleId, ModuleDefId, ModuleId, StaticLoc, StructLoc, TraitLoc,
-    TypeAliasLoc, UnionLoc,
+    LocalModuleId, ModuleDefId, ModuleId, StaticLoc, StructLoc, TraitLoc, TypeAliasLoc, UnionLoc,
 };
 
 pub(super) fn collect_defs(db: &impl DefDatabase, mut def_map: CrateDefMap) -> CrateDefMap {
@@ -93,7 +92,7 @@ impl PartialResolvedImport {
 #[derive(Clone, Debug, Eq, PartialEq)]
 struct ImportDirective {
     module_id: LocalModuleId,
-    import_id: LocalImportId,
+    import_id: raw::Import,
     import: raw::ImportData,
     status: PartialResolvedImport,
 }
@@ -110,7 +109,7 @@ struct MacroDirective {
 struct DefCollector<'a, DB> {
     db: &'a DB,
     def_map: CrateDefMap,
-    glob_imports: FxHashMap<LocalModuleId, Vec<(LocalModuleId, LocalImportId)>>,
+    glob_imports: FxHashMap<LocalModuleId, Vec<(LocalModuleId, raw::Import)>>,
     unresolved_imports: Vec<ImportDirective>,
     resolved_imports: Vec<ImportDirective>,
     unexpanded_macros: Vec<MacroDirective>,
@@ -219,7 +218,7 @@ where
             self.update(
                 self.def_map.root,
                 None,
-                &[(name, Resolution { def: PerNs::macros(macro_), import: None })],
+                &[(name, Resolution { def: PerNs::macros(macro_), import: false })],
             );
         }
     }
@@ -404,7 +403,7 @@ where
                             let variant = EnumVariantId { parent: e, local_id };
                             let res = Resolution {
                                 def: PerNs::both(variant.into(), variant.into()),
-                                import: Some(import_id),
+                                import: true,
                             };
                             (name, res)
                         })
@@ -431,7 +430,7 @@ where
                         }
                     }
 
-                    let resolution = Resolution { def, import: Some(import_id) };
+                    let resolution = Resolution { def, import: true };
                     self.update(module_id, Some(import_id), &[(name, resolution)]);
                 }
                 None => tested_by!(bogus_paths),
@@ -442,7 +441,7 @@ where
     fn update(
         &mut self,
         module_id: LocalModuleId,
-        import: Option<LocalImportId>,
+        import: Option<raw::Import>,
         resolutions: &[(Name, Resolution)],
     ) {
         self.update_recursive(module_id, import, resolutions, 0)
@@ -451,7 +450,7 @@ where
     fn update_recursive(
         &mut self,
         module_id: LocalModuleId,
-        import: Option<LocalImportId>,
+        import: Option<raw::Import>,
         resolutions: &[(Name, Resolution)],
         depth: usize,
     ) {
@@ -462,7 +461,7 @@ 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, import.is_some());
         }
 
         if !changed {
@@ -719,7 +718,7 @@ where
             def: PerNs::types(
                 ModuleId { krate: self.def_collector.def_map.krate, local_id: res }.into(),
             ),
-            import: None,
+            import: false,
         };
         self.def_collector.update(self.module_id, None, &[(name, resolution)]);
         res
@@ -791,7 +790,7 @@ where
                 PerNs::types(def.into())
             }
         };
-        let resolution = Resolution { def, import: None };
+        let resolution = Resolution { def, import: false };
         self.def_collector.update(self.module_id, None, &[(name, resolution)])
     }
 
diff --git a/crates/ra_hir_def/src/nameres/raw.rs b/crates/ra_hir_def/src/nameres/raw.rs
index df5dac88a..1b83b2247 100644
--- a/crates/ra_hir_def/src/nameres/raw.rs
+++ b/crates/ra_hir_def/src/nameres/raw.rs
@@ -7,24 +7,20 @@
 
 use std::{ops::Index, sync::Arc};
 
-use either::Either;
 use hir_expand::{
     ast_id_map::AstIdMap,
     db::AstDatabase,
     hygiene::Hygiene,
     name::{AsName, Name},
 };
-use ra_arena::{impl_arena_id, map::ArenaMap, Arena, RawId};
+use ra_arena::{impl_arena_id, Arena, RawId};
 use ra_syntax::{
     ast::{self, AttrsOwner, NameOwner},
-    AstNode, AstPtr,
+    AstNode,
 };
 use test_utils::tested_by;
 
-use crate::{
-    attr::Attrs, db::DefDatabase, path::ModPath, trace::Trace, FileAstId, HirFileId, InFile,
-    LocalImportId,
-};
+use crate::{attr::Attrs, db::DefDatabase, path::ModPath, FileAstId, HirFileId, InFile};
 
 /// `RawItems` is a set of top-level items in a file (except for impls).
 ///
@@ -33,7 +29,7 @@ use crate::{
 #[derive(Debug, Default, PartialEq, Eq)]
 pub struct RawItems {
     modules: Arena<Module, ModuleData>,
-    imports: Arena<LocalImportId, ImportData>,
+    imports: Arena<Import, ImportData>,
     defs: Arena<Def, DefData>,
     macros: Arena<Macro, MacroData>,
     impls: Arena<Impl, ImplData>,
@@ -41,29 +37,14 @@ pub struct RawItems {
     items: Vec<RawItem>,
 }
 
-#[derive(Debug, Default, PartialEq, Eq)]
-pub struct ImportSourceMap {
-    map: ArenaMap<LocalImportId, ImportSourcePtr>,
-}
-
-type ImportSourcePtr = Either<AstPtr<ast::UseTree>, AstPtr<ast::ExternCrateItem>>;
-
 impl RawItems {
     pub(crate) fn raw_items_query(
         db: &(impl DefDatabase + AstDatabase),
         file_id: HirFileId,
     ) -> Arc<RawItems> {
-        db.raw_items_with_source_map(file_id).0
-    }
-
-    pub(crate) fn raw_items_with_source_map_query(
-        db: &(impl DefDatabase + AstDatabase),
-        file_id: HirFileId,
-    ) -> (Arc<RawItems>, Arc<ImportSourceMap>) {
         let mut collector = RawItemsCollector {
             raw_items: RawItems::default(),
             source_ast_id_map: db.ast_id_map(file_id),
-            imports: Trace::new(),
             file_id,
             hygiene: Hygiene::new(db, file_id),
         };
@@ -74,11 +55,8 @@ impl RawItems {
                 collector.process_module(None, item_list);
             }
         }
-        let mut raw_items = collector.raw_items;
-        let (arena, map) = collector.imports.into_arena_and_map();
-        raw_items.imports = arena;
-        let source_map = ImportSourceMap { map };
-        (Arc::new(raw_items), Arc::new(source_map))
+        let raw_items = collector.raw_items;
+        Arc::new(raw_items)
     }
 
     pub(super) fn items(&self) -> &[RawItem] {
@@ -93,9 +71,9 @@ impl Index<Module> for RawItems {
     }
 }
 
-impl Index<LocalImportId> for RawItems {
+impl Index<Import> for RawItems {
     type Output = ImportData;
-    fn index(&self, idx: LocalImportId) -> &ImportData {
+    fn index(&self, idx: Import) -> &ImportData {
         &self.imports[idx]
     }
 }
@@ -130,7 +108,7 @@ pub(super) struct RawItem {
 #[derive(Debug, PartialEq, Eq, Clone, Copy)]
 pub(super) enum RawItemKind {
     Module(Module),
-    Import(LocalImportId),
+    Import(Import),
     Def(Def),
     Macro(Macro),
     Impl(Impl),
@@ -146,6 +124,10 @@ pub(super) enum ModuleData {
     Definition { name: Name, ast_id: FileAstId<ast::Module>, items: Vec<RawItem> },
 }
 
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub(crate) struct Import(RawId);
+impl_arena_id!(Import);
+
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct ImportData {
     pub(super) path: ModPath,
@@ -217,7 +199,6 @@ pub(super) struct ImplData {
 
 struct RawItemsCollector {
     raw_items: RawItems,
-    imports: Trace<LocalImportId, ImportData, ImportSourcePtr>,
     source_ast_id_map: Arc<AstIdMap>,
     file_id: HirFileId,
     hygiene: Hygiene,
@@ -324,7 +305,7 @@ impl RawItemsCollector {
         ModPath::expand_use_item(
             InFile { value: use_item, file_id: self.file_id },
             &self.hygiene,
-            |path, use_tree, is_glob, alias| {
+            |path, _use_tree, is_glob, alias| {
                 let import_data = ImportData {
                     path,
                     alias,
@@ -333,11 +314,11 @@ impl RawItemsCollector {
                     is_extern_crate: false,
                     is_macro_use: false,
                 };
-                buf.push((import_data, Either::Left(AstPtr::new(use_tree))));
+                buf.push(import_data);
             },
         );
-        for (import_data, ptr) in buf {
-            self.push_import(current_module, attrs.clone(), import_data, ptr);
+        for import_data in buf {
+            self.push_import(current_module, attrs.clone(), import_data);
         }
     }
 
@@ -360,12 +341,7 @@ impl RawItemsCollector {
                 is_extern_crate: true,
                 is_macro_use,
             };
-            self.push_import(
-                current_module,
-                attrs,
-                import_data,
-                Either::Right(AstPtr::new(&extern_crate)),
-            );
+            self.push_import(current_module, attrs, import_data);
         }
     }
 
@@ -396,14 +372,8 @@ impl RawItemsCollector {
         self.push_item(current_module, attrs, RawItemKind::Impl(imp))
     }
 
-    fn push_import(
-        &mut self,
-        current_module: Option<Module>,
-        attrs: Attrs,
-        data: ImportData,
-        source: ImportSourcePtr,
-    ) {
-        let import = self.imports.alloc(|| source, || data);
+    fn push_import(&mut self, current_module: Option<Module>, attrs: Attrs, data: ImportData) {
+        let import = self.raw_items.imports.alloc(data);
         self.push_item(current_module, attrs, RawItemKind::Import(import))
     }
 
diff --git a/crates/ra_hir_def/src/trace.rs b/crates/ra_hir_def/src/trace.rs
index 2bcd707bc..9769e88df 100644
--- a/crates/ra_hir_def/src/trace.rs
+++ b/crates/ra_hir_def/src/trace.rs
@@ -18,10 +18,6 @@ pub(crate) struct Trace<ID: ArenaId, T, V> {
 }
 
 impl<ID: ra_arena::ArenaId + Copy, T, V> Trace<ID, T, V> {
-    pub(crate) fn new() -> Trace<ID, T, V> {
-        Trace { arena: Some(Arena::default()), map: Some(ArenaMap::default()), len: 0 }
-    }
-
     pub(crate) fn new_for_arena() -> Trace<ID, T, V> {
         Trace { arena: Some(Arena::default()), map: None, len: 0 }
     }
@@ -52,8 +48,4 @@ impl<ID: ra_arena::ArenaId + Copy, T, V> Trace<ID, T, V> {
     pub(crate) fn into_map(mut self) -> ArenaMap<ID, V> {
         self.map.take().unwrap()
     }
-
-    pub(crate) fn into_arena_and_map(mut self) -> (Arena<ID, T>, ArenaMap<ID, V>) {
-        (self.arena.take().unwrap(), self.map.take().unwrap())
-    }
 }
diff --git a/crates/ra_ide/src/change.rs b/crates/ra_ide/src/change.rs
index 4a76d1dd8..387a9cafb 100644
--- a/crates/ra_ide/src/change.rs
+++ b/crates/ra_ide/src/change.rs
@@ -270,7 +270,6 @@ impl RootDatabase {
 
         self.query(hir::db::AstIdMapQuery).sweep(sweep);
 
-        self.query(hir::db::RawItemsWithSourceMapQuery).sweep(sweep);
         self.query(hir::db::BodyWithSourceMapQuery).sweep(sweep);
 
         self.query(hir::db::ExprScopesQuery).sweep(sweep);
@@ -309,7 +308,6 @@ impl RootDatabase {
             hir::db::StructDataQuery
             hir::db::EnumDataQuery
             hir::db::TraitDataQuery
-            hir::db::RawItemsWithSourceMapQuery
             hir::db::RawItemsQuery
             hir::db::CrateDefMapQuery
             hir::db::GenericParamsQuery