6 files changed, 40 insertions, 57 deletions

diff --git a/crates/ra_hir_def/src/body/scope.rs b/crates/ra_hir_def/src/body/scope.rs
index ab6599b23..a63552327 100644
--- a/crates/ra_hir_def/src/body/scope.rs
+++ b/crates/ra_hir_def/src/body/scope.rs
@@ -183,8 +183,8 @@ mod tests {
         let crate_def_map = db.crate_def_map(krate);
 
         let module = crate_def_map.modules_for_file(file_id).next().unwrap();
-        let (_, res) = crate_def_map[module].scope.entries().next().unwrap();
-        match res.def.take_values().unwrap() {
+        let (_, def) = crate_def_map[module].scope.entries().next().unwrap();
+        match def.take_values().unwrap() {
             ModuleDefId::FunctionId(it) => it,
             _ => panic!(),
         }
diff --git a/crates/ra_hir_def/src/item_scope.rs b/crates/ra_hir_def/src/item_scope.rs
index 71f44b556..f1adc3b58 100644
--- a/crates/ra_hir_def/src/item_scope.rs
+++ b/crates/ra_hir_def/src/item_scope.rs
@@ -9,7 +9,7 @@ use crate::{per_ns::PerNs, AdtId, BuiltinType, ImplId, MacroDefId, ModuleDefId,
 
 #[derive(Debug, Default, PartialEq, Eq)]
 pub struct ItemScope {
-    visible: FxHashMap<Name, Resolution>,
+    visible: FxHashMap<Name, PerNs>,
     defs: Vec<ModuleDefId>,
     impls: Vec<ImplId>,
     /// Macros visible in current module in legacy textual scope
@@ -27,10 +27,10 @@ pub struct ItemScope {
     legacy_macros: FxHashMap<Name, MacroDefId>,
 }
 
-static BUILTIN_SCOPE: Lazy<FxHashMap<Name, Resolution>> = Lazy::new(|| {
+static BUILTIN_SCOPE: Lazy<FxHashMap<Name, PerNs>> = Lazy::new(|| {
     BuiltinType::ALL
         .iter()
-        .map(|(name, ty)| (name.clone(), Resolution { def: PerNs::types(ty.clone().into()) }))
+        .map(|(name, ty)| (name.clone(), PerNs::types(ty.clone().into())))
         .collect()
 });
 
@@ -46,9 +46,9 @@ pub(crate) enum BuiltinShadowMode {
 /// Legacy macros can only be accessed through special methods like `get_legacy_macros`.
 /// Other methods will only resolve values, types and module scoped macros only.
 impl ItemScope {
-    pub fn entries<'a>(&'a self) -> impl Iterator<Item = (&'a Name, &'a Resolution)> + 'a {
+    pub fn entries<'a>(&'a self) -> impl Iterator<Item = (&'a Name, PerNs)> + 'a {
         //FIXME: shadowing
-        self.visible.iter().chain(BUILTIN_SCOPE.iter())
+        self.visible.iter().chain(BUILTIN_SCOPE.iter()).map(|(n, def)| (n, *def))
     }
 
     pub fn declarations(&self) -> impl Iterator<Item = ModuleDefId> + '_ {
@@ -61,9 +61,7 @@ impl ItemScope {
 
     /// Iterate over all module scoped macros
     pub(crate) fn macros<'a>(&'a self) -> impl Iterator<Item = (&'a Name, MacroDefId)> + 'a {
-        self.visible
-            .iter()
-            .filter_map(|(name, res)| res.def.take_macros().map(|macro_| (name, macro_)))
+        self.visible.iter().filter_map(|(name, def)| def.take_macros().map(|macro_| (name, macro_)))
     }
 
     /// Iterate over all legacy textual scoped macros visible at the end of the module
@@ -72,13 +70,13 @@ impl ItemScope {
     }
 
     /// Get a name from current module scope, legacy macros are not included
-    pub(crate) fn get(&self, name: &Name, shadow: BuiltinShadowMode) -> Option<&Resolution> {
+    pub(crate) fn get(&self, name: &Name, shadow: BuiltinShadowMode) -> Option<&PerNs> {
         match shadow {
             BuiltinShadowMode::Module => self.visible.get(name).or_else(|| BUILTIN_SCOPE.get(name)),
             BuiltinShadowMode::Other => {
                 let item = self.visible.get(name);
-                if let Some(res) = item {
-                    if let Some(ModuleDefId::ModuleId(_)) = res.def.take_types() {
+                if let Some(def) = item {
+                    if let Some(ModuleDefId::ModuleId(_)) = def.take_types() {
                         return BUILTIN_SCOPE.get(name).or(item);
                     }
                 }
@@ -89,7 +87,7 @@ impl ItemScope {
     }
 
     pub(crate) fn traits<'a>(&'a self) -> impl Iterator<Item = TraitId> + 'a {
-        self.visible.values().filter_map(|r| match r.def.take_types() {
+        self.visible.values().filter_map(|def| match def.take_types() {
             Some(ModuleDefId::TraitId(t)) => Some(t),
             _ => None,
         })
@@ -111,27 +109,27 @@ impl ItemScope {
         self.legacy_macros.insert(name, mac);
     }
 
-    pub(crate) fn push_res(&mut self, name: Name, res: &Resolution) -> bool {
+    pub(crate) fn push_res(&mut self, name: Name, def: &PerNs) -> bool {
         let mut changed = false;
         let existing = self.visible.entry(name.clone()).or_default();
 
-        if existing.def.types.is_none() && res.def.types.is_some() {
-            existing.def.types = res.def.types;
+        if existing.types.is_none() && def.types.is_some() {
+            existing.types = def.types;
             changed = true;
         }
-        if existing.def.values.is_none() && res.def.values.is_some() {
-            existing.def.values = res.def.values;
+        if existing.values.is_none() && def.values.is_some() {
+            existing.values = def.values;
             changed = true;
         }
-        if existing.def.macros.is_none() && res.def.macros.is_some() {
-            existing.def.macros = res.def.macros;
+        if existing.macros.is_none() && def.macros.is_some() {
+            existing.macros = def.macros;
             changed = true;
         }
 
         changed
     }
 
-    pub(crate) fn collect_resolutions(&self) -> Vec<(Name, Resolution)> {
+    pub(crate) fn collect_resolutions(&self) -> Vec<(Name, PerNs)> {
         self.visible.iter().map(|(name, res)| (name.clone(), res.clone())).collect()
     }
 
@@ -140,12 +138,6 @@ impl ItemScope {
     }
 }
 
-#[derive(Debug, Clone, PartialEq, Eq, Default)]
-pub struct Resolution {
-    /// None for unresolved
-    pub def: PerNs,
-}
-
 impl From<ModuleDefId> for PerNs {
     fn from(def: ModuleDefId) -> PerNs {
         match def {
diff --git a/crates/ra_hir_def/src/nameres/collector.rs b/crates/ra_hir_def/src/nameres/collector.rs
index d27c3e197..4f1fd4801 100644
--- a/crates/ra_hir_def/src/nameres/collector.rs
+++ b/crates/ra_hir_def/src/nameres/collector.rs
@@ -18,7 +18,6 @@ use test_utils::tested_by;
 use crate::{
     attr::Attrs,
     db::DefDatabase,
-    item_scope::Resolution,
     nameres::{
         diagnostics::DefDiagnostic, mod_resolution::ModDir, path_resolution::ReachedFixedPoint,
         raw, BuiltinShadowMode, CrateDefMap, ModuleData, ModuleOrigin, ResolveMode,
@@ -215,7 +214,7 @@ where
         // In Rust, `#[macro_export]` macros are unconditionally visible at the
         // crate root, even if the parent modules is **not** visible.
         if export {
-            self.update(self.def_map.root, &[(name, Resolution { def: PerNs::macros(macro_) })]);
+            self.update(self.def_map.root, &[(name, PerNs::macros(macro_))]);
         }
     }
 
@@ -397,8 +396,7 @@ where
                         .map(|(local_id, variant_data)| {
                             let name = variant_data.name.clone();
                             let variant = EnumVariantId { parent: e, local_id };
-                            let res =
-                                Resolution { def: PerNs::both(variant.into(), variant.into()) };
+                            let res = PerNs::both(variant.into(), variant.into());
                             (name, res)
                         })
                         .collect::<Vec<_>>();
@@ -424,22 +422,21 @@ where
                         }
                     }
 
-                    let resolution = Resolution { def };
-                    self.update(module_id, &[(name, resolution)]);
+                    self.update(module_id, &[(name, def)]);
                 }
                 None => tested_by!(bogus_paths),
             }
         }
     }
 
-    fn update(&mut self, module_id: LocalModuleId, resolutions: &[(Name, Resolution)]) {
+    fn update(&mut self, module_id: LocalModuleId, resolutions: &[(Name, PerNs)]) {
         self.update_recursive(module_id, resolutions, 0)
     }
 
     fn update_recursive(
         &mut self,
         module_id: LocalModuleId,
-        resolutions: &[(Name, Resolution)],
+        resolutions: &[(Name, PerNs)],
         depth: usize,
     ) {
         if depth > 100 {
@@ -705,8 +702,7 @@ where
         let module = ModuleId { krate: self.def_collector.def_map.krate, local_id: res };
         let def: ModuleDefId = module.into();
         self.def_collector.def_map.modules[self.module_id].scope.define_def(def);
-        let resolution = Resolution { def: def.into() };
-        self.def_collector.update(self.module_id, &[(name, resolution)]);
+        self.def_collector.update(self.module_id, &[(name, def.into())]);
         res
     }
 
@@ -765,8 +761,7 @@ where
             .into(),
         };
         self.def_collector.def_map.modules[self.module_id].scope.define_def(def);
-        let resolution = Resolution { def: def.into() };
-        self.def_collector.update(self.module_id, &[(name, resolution)])
+        self.def_collector.update(self.module_id, &[(name, def.into())])
     }
 
     fn collect_derives(&mut self, attrs: &Attrs, def: &raw::DefData) {
diff --git a/crates/ra_hir_def/src/nameres/path_resolution.rs b/crates/ra_hir_def/src/nameres/path_resolution.rs
index 2dd779b66..378d49455 100644
--- a/crates/ra_hir_def/src/nameres/path_resolution.rs
+++ b/crates/ra_hir_def/src/nameres/path_resolution.rs
@@ -181,7 +181,7 @@ impl CrateDefMap {
 
                     // Since it is a qualified path here, it should not contains legacy macros
                     match self[module.local_id].scope.get(&segment, prefer_module(i)) {
-                        Some(res) => res.def,
+                        Some(def) => *def,
                         _ => {
                             log::debug!("path segment {:?} not found", segment);
                             return ResolvePathResult::empty(ReachedFixedPoint::No);
@@ -243,8 +243,7 @@ impl CrateDefMap {
         //  - std prelude
         let from_legacy_macro =
             self[module].scope.get_legacy_macro(name).map_or_else(PerNs::none, PerNs::macros);
-        let from_scope =
-            self[module].scope.get(name, shadow).map_or_else(PerNs::none, |res| res.def);
+        let from_scope = self[module].scope.get(name, shadow).copied().unwrap_or_else(PerNs::none);
         let from_extern_prelude =
             self.extern_prelude.get(name).map_or(PerNs::none(), |&it| PerNs::types(it));
         let from_prelude = self.resolve_in_prelude(db, name, shadow);
@@ -258,7 +257,7 @@ impl CrateDefMap {
         shadow: BuiltinShadowMode,
     ) -> PerNs {
         let from_crate_root =
-            self[self.root].scope.get(name, shadow).map_or_else(PerNs::none, |res| res.def);
+            self[self.root].scope.get(name, shadow).copied().unwrap_or_else(PerNs::none);
         let from_extern_prelude = self.resolve_name_in_extern_prelude(name);
 
         from_crate_root.or(from_extern_prelude)
@@ -279,10 +278,7 @@ impl CrateDefMap {
                 keep = db.crate_def_map(prelude.krate);
                 &keep
             };
-            def_map[prelude.local_id]
-                .scope
-                .get(name, shadow)
-                .map_or_else(PerNs::none, |res| res.def)
+            def_map[prelude.local_id].scope.get(name, shadow).copied().unwrap_or_else(PerNs::none)
         } else {
             PerNs::none()
         }
diff --git a/crates/ra_hir_def/src/nameres/tests.rs b/crates/ra_hir_def/src/nameres/tests.rs
index 4e968bcc8..ff474b53b 100644
--- a/crates/ra_hir_def/src/nameres/tests.rs
+++ b/crates/ra_hir_def/src/nameres/tests.rs
@@ -35,19 +35,19 @@ fn render_crate_def_map(map: &CrateDefMap) -> String {
         let mut entries = map.modules[module].scope.collect_resolutions();
         entries.sort_by_key(|(name, _)| name.clone());
 
-        for (name, res) in entries {
+        for (name, def) in entries {
             *buf += &format!("{}:", name);
 
-            if res.def.types.is_some() {
+            if def.types.is_some() {
                 *buf += " t";
             }
-            if res.def.values.is_some() {
+            if def.values.is_some() {
                 *buf += " v";
             }
-            if res.def.macros.is_some() {
+            if def.macros.is_some() {
                 *buf += " m";
             }
-            if res.def.is_none() {
+            if def.is_none() {
                 *buf += " _";
             }
 
diff --git a/crates/ra_hir_def/src/resolver.rs b/crates/ra_hir_def/src/resolver.rs
index 83013fed3..e70049617 100644
--- a/crates/ra_hir_def/src/resolver.rs
+++ b/crates/ra_hir_def/src/resolver.rs
@@ -413,8 +413,8 @@ impl Scope {
                 //         def: m.module.into(),
                 //     }),
                 // );
-                m.crate_def_map[m.module_id].scope.entries().for_each(|(name, res)| {
-                    f(name.clone(), ScopeDef::PerNs(res.def));
+                m.crate_def_map[m.module_id].scope.entries().for_each(|(name, def)| {
+                    f(name.clone(), ScopeDef::PerNs(def));
                 });
                 m.crate_def_map[m.module_id].scope.legacy_macros().for_each(|(name, macro_)| {
                     f(name.clone(), ScopeDef::PerNs(PerNs::macros(macro_)));
@@ -424,8 +424,8 @@ impl Scope {
                 });
                 if let Some(prelude) = m.crate_def_map.prelude {
                     let prelude_def_map = db.crate_def_map(prelude.krate);
-                    prelude_def_map[prelude.local_id].scope.entries().for_each(|(name, res)| {
-                        f(name.clone(), ScopeDef::PerNs(res.def));
+                    prelude_def_map[prelude.local_id].scope.entries().for_each(|(name, def)| {
+                        f(name.clone(), ScopeDef::PerNs(def));
                     });
                 }
             }