5 files changed, 19 insertions, 35 deletions

diff --git a/crates/ra_hir/src/code_model.rs b/crates/ra_hir/src/code_model.rs
index b3e2ff1c2..9f06b147c 100644
--- a/crates/ra_hir/src/code_model.rs
+++ b/crates/ra_hir/src/code_model.rs
@@ -62,7 +62,7 @@ impl Crate {
     }
 
     pub fn root_module(self, db: &impl DefDatabase) -> Option<Module> {
-        let module_id = db.crate_def_map(self.crate_id).root();
+        let module_id = db.crate_def_map(self.crate_id).root;
         Some(Module::new(self, module_id))
     }
 
@@ -195,7 +195,7 @@ impl Module {
     /// in the module tree of any target in `Cargo.toml`.
     pub fn crate_root(self, db: &impl DefDatabase) -> Module {
         let def_map = db.crate_def_map(self.id.krate);
-        self.with_module_id(def_map.root())
+        self.with_module_id(def_map.root)
     }
 
     /// Finds a child module with the specified name.
diff --git a/crates/ra_hir_def/src/lang_item.rs b/crates/ra_hir_def/src/lang_item.rs
index 3b9fb0328..f15c23db9 100644
--- a/crates/ra_hir_def/src/lang_item.rs
+++ b/crates/ra_hir_def/src/lang_item.rs
@@ -39,8 +39,9 @@ impl LangItems {
         let crate_def_map = db.crate_def_map(krate);
 
         crate_def_map
-            .modules()
-            .filter_map(|module_id| db.module_lang_items(ModuleId { krate, module_id }))
+            .modules
+            .iter()
+            .filter_map(|(module_id, _)| db.module_lang_items(ModuleId { krate, module_id }))
             .for_each(|it| lang_items.items.extend(it.items.iter().map(|(k, v)| (k.clone(), *v))));
 
         Arc::new(lang_items)
diff --git a/crates/ra_hir_def/src/nameres.rs b/crates/ra_hir_def/src/nameres.rs
index 5919771b0..9476fb1ad 100644
--- a/crates/ra_hir_def/src/nameres.rs
+++ b/crates/ra_hir_def/src/nameres.rs
@@ -80,16 +80,16 @@ use crate::{
 /// Contains all top-level defs from a macro-expanded crate
 #[derive(Debug, PartialEq, Eq)]
 pub struct CrateDefMap {
-    krate: CrateId,
-    edition: Edition,
+    pub root: LocalModuleId,
+    pub(crate) krate: CrateId,
     /// The prelude module for this crate. This either comes from an import
     /// marked with the `prelude_import` attribute, or (in the normal case) from
     /// a dependency (`std` or `core`).
-    prelude: Option<ModuleId>,
-    extern_prelude: FxHashMap<Name, ModuleDefId>,
-    root: LocalModuleId,
-    modules: Arena<LocalModuleId, ModuleData>,
+    pub(crate) prelude: Option<ModuleId>,
+    pub(crate) extern_prelude: FxHashMap<Name, ModuleDefId>,
+    pub(crate) modules: Arena<LocalModuleId, ModuleData>,
 
+    edition: Edition,
     diagnostics: Vec<DefDiagnostic>,
 }
 
@@ -229,22 +229,6 @@ impl CrateDefMap {
         Arc::new(def_map)
     }
 
-    pub fn krate(&self) -> CrateId {
-        self.krate
-    }
-
-    pub fn root(&self) -> LocalModuleId {
-        self.root
-    }
-
-    pub fn prelude(&self) -> Option<ModuleId> {
-        self.prelude
-    }
-
-    pub fn extern_prelude(&self) -> &FxHashMap<Name, ModuleDefId> {
-        &self.extern_prelude
-    }
-
     pub fn add_diagnostics(
         &self,
         db: &impl DefDatabase,
@@ -254,10 +238,6 @@ impl CrateDefMap {
         self.diagnostics.iter().for_each(|it| it.add_to(db, module, sink))
     }
 
-    pub fn modules(&self) -> impl Iterator<Item = LocalModuleId> + '_ {
-        self.modules.iter().map(|(id, _data)| id)
-    }
-
     pub fn modules_for_file(&self, file_id: FileId) -> impl Iterator<Item = LocalModuleId> + '_ {
         self.modules
             .iter()
diff --git a/crates/ra_hir_def/src/nameres/collector.rs b/crates/ra_hir_def/src/nameres/collector.rs
index df01a20e1..41becf8df 100644
--- a/crates/ra_hir_def/src/nameres/collector.rs
+++ b/crates/ra_hir_def/src/nameres/collector.rs
@@ -1,4 +1,7 @@
-//! FIXME: write short doc here
+//! The core of the module-level name resolution algorithm.
+//!
+//! `DefCollector::collect` contains the fixed-point iteration loop which
+//! resolves imports and expands macros.
 
 use hir_expand::{
     builtin_macro::find_builtin_macro,
diff --git a/crates/ra_hir_def/src/resolver.rs b/crates/ra_hir_def/src/resolver.rs
index 7182b8a4d..c24a9b165 100644
--- a/crates/ra_hir_def/src/resolver.rs
+++ b/crates/ra_hir_def/src/resolver.rs
@@ -321,7 +321,7 @@ impl Resolver {
         let mut traits = FxHashSet::default();
         for scope in &self.scopes {
             if let Scope::ModuleScope(m) = scope {
-                if let Some(prelude) = m.crate_def_map.prelude() {
+                if let Some(prelude) = m.crate_def_map.prelude {
                     let prelude_def_map = db.crate_def_map(prelude.krate);
                     traits.extend(prelude_def_map[prelude.module_id].scope.traits());
                 }
@@ -340,7 +340,7 @@ impl Resolver {
     }
 
     pub fn krate(&self) -> Option<CrateId> {
-        self.module().map(|t| t.0.krate())
+        self.module().map(|t| t.0.krate)
     }
 
     pub fn where_predicates_in_scope<'a>(
@@ -395,10 +395,10 @@ impl Scope {
                 m.crate_def_map[m.module_id].scope.legacy_macros().for_each(|(name, macro_)| {
                     f(name.clone(), ScopeDef::PerNs(PerNs::macros(macro_)));
                 });
-                m.crate_def_map.extern_prelude().iter().for_each(|(name, &def)| {
+                m.crate_def_map.extern_prelude.iter().for_each(|(name, &def)| {
                     f(name.clone(), ScopeDef::PerNs(PerNs::types(def.into())));
                 });
-                if let Some(prelude) = m.crate_def_map.prelude() {
+                if let Some(prelude) = m.crate_def_map.prelude {
                     let prelude_def_map = db.crate_def_map(prelude.krate);
                     prelude_def_map[prelude.module_id].scope.entries().for_each(|(name, res)| {
                         f(name.clone(), ScopeDef::PerNs(res.def));