8 files changed, 29 insertions, 18 deletions

diff --git a/crates/ra_hir/src/code_model.rs b/crates/ra_hir/src/code_model.rs
index 181c5d47a..4e273d9e4 100644
--- a/crates/ra_hir/src/code_model.rs
+++ b/crates/ra_hir/src/code_model.rs
@@ -30,8 +30,8 @@ use crate::{
     impl_block::ImplBlock,
     resolve::{Resolver, Scope, TypeNs},
     traits::TraitData,
-    ty::{InferenceResult, TraitRef},
-    Either, HasSource, Name, ScopeDef, Ty, {ImportId, Namespace},
+    ty::{InferenceResult, Namespace, TraitRef},
+    Either, HasSource, ImportId, Name, ScopeDef, Ty,
 };
 
 /// hir::Crate describes a single crate. It's the main interface with which
diff --git a/crates/ra_hir/src/db.rs b/crates/ra_hir/src/db.rs
index eb66325f7..11b3f94ae 100644
--- a/crates/ra_hir/src/db.rs
+++ b/crates/ra_hir/src/db.rs
@@ -14,10 +14,10 @@ use crate::{
     traits::TraitData,
     ty::{
         method_resolution::CrateImplBlocks, traits::Impl, CallableDef, FnSig, GenericPredicate,
-        InferenceResult, Substs, Ty, TypableDef, TypeCtor,
+        InferenceResult, Namespace, Substs, Ty, TypableDef, TypeCtor,
     },
     type_alias::TypeAliasData,
-    Const, ConstData, Crate, DefWithBody, ExprScopes, FnData, Function, Module, Namespace, Static,
+    Const, ConstData, Crate, DefWithBody, ExprScopes, FnData, Function, Module, Static,
     StructField, Trait, TypeAlias,
 };
 
diff --git a/crates/ra_hir/src/lib.rs b/crates/ra_hir/src/lib.rs
index da6aa2ed8..5f2a05e76 100644
--- a/crates/ra_hir/src/lib.rs
+++ b/crates/ra_hir/src/lib.rs
@@ -81,10 +81,7 @@ pub use crate::{
 
 pub use hir_def::{
     builtin_type::BuiltinType,
-    nameres::{
-        per_ns::{Namespace, PerNs},
-        raw::ImportId,
-    },
+    nameres::{per_ns::PerNs, raw::ImportId},
     path::{Path, PathKind},
     type_ref::Mutability,
 };
diff --git a/crates/ra_hir/src/ty.rs b/crates/ra_hir/src/ty.rs
index d1a9d7411..cd2ac0e8b 100644
--- a/crates/ra_hir/src/ty.rs
+++ b/crates/ra_hir/src/ty.rs
@@ -27,7 +27,7 @@ pub(crate) use infer::{infer_query, InferTy, InferenceResult};
 pub use lower::CallableDef;
 pub(crate) use lower::{
     callable_item_sig, generic_defaults_query, generic_predicates_for_param_query,
-    generic_predicates_query, type_for_def, type_for_field, TypableDef,
+    generic_predicates_query, type_for_def, type_for_field, Namespace, TypableDef,
 };
 pub(crate) use traits::{InEnvironment, Obligation, ProjectionPredicate, TraitEnvironment};
 
diff --git a/crates/ra_hir/src/ty/infer/expr.rs b/crates/ra_hir/src/ty/infer/expr.rs
index a09ef5c5d..4af1d65ee 100644
--- a/crates/ra_hir/src/ty/infer/expr.rs
+++ b/crates/ra_hir/src/ty/infer/expr.rs
@@ -12,10 +12,10 @@ use crate::{
     expr::{self, Array, BinaryOp, Expr, ExprId, Literal, Statement, UnaryOp},
     generics::{GenericParams, HasGenericParams},
     ty::{
-        autoderef, method_resolution, op, primitive, CallableDef, InferTy, Mutability, Obligation,
-        ProjectionPredicate, ProjectionTy, Substs, TraitRef, Ty, TypeCtor, TypeWalk,
+        autoderef, method_resolution, op, primitive, CallableDef, InferTy, Mutability, Namespace,
+        Obligation, ProjectionPredicate, ProjectionTy, Substs, TraitRef, Ty, TypeCtor, TypeWalk,
     },
-    Adt, Name, Namespace,
+    Adt, Name,
 };
 
 impl<'a, D: HirDatabase> InferenceContext<'a, D> {
diff --git a/crates/ra_hir/src/ty/infer/path.rs b/crates/ra_hir/src/ty/infer/path.rs
index 59b7f7eb6..865ced5a1 100644
--- a/crates/ra_hir/src/ty/infer/path.rs
+++ b/crates/ra_hir/src/ty/infer/path.rs
@@ -6,8 +6,8 @@ use super::{ExprOrPatId, InferenceContext, TraitRef};
 use crate::{
     db::HirDatabase,
     resolve::{ResolveValueResult, Resolver, TypeNs, ValueNs},
-    ty::{method_resolution, Substs, Ty, TypableDef, TypeWalk},
-    AssocItem, Container, HasGenericParams, Name, Namespace, Path,
+    ty::{method_resolution, Namespace, Substs, Ty, TypableDef, TypeWalk},
+    AssocItem, Container, HasGenericParams, Name, Path,
 };
 
 impl<'a, D: HirDatabase> InferenceContext<'a, D> {
diff --git a/crates/ra_hir/src/ty/lower.rs b/crates/ra_hir/src/ty/lower.rs
index e29ab8492..d26b16cb2 100644
--- a/crates/ra_hir/src/ty/lower.rs
+++ b/crates/ra_hir/src/ty/lower.rs
@@ -29,10 +29,21 @@ use crate::{
         Adt,
     },
     util::make_mut_slice,
-    Const, Enum, EnumVariant, Function, ModuleDef, Namespace, Path, Static, Struct, StructField,
-    Trait, TypeAlias, Union,
+    Const, Enum, EnumVariant, Function, ModuleDef, Path, Static, Struct, StructField, Trait,
+    TypeAlias, Union,
 };
 
+// FIXME: this is only really used in `type_for_def`, which contains a bunch of
+// impossible cases. Perhaps we should recombine `TypeableDef` and `Namespace`
+// into a `AsTypeDef`, `AsValueDef` enums?
+#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub enum Namespace {
+    Types,
+    Values,
+    // Note that only type inference uses this enum, and it doesn't care about macros.
+    // Macro,
+}
+
 impl Ty {
     pub(crate) fn from_hir(db: &impl HirDatabase, resolver: &Resolver, type_ref: &TypeRef) -> Self {
         match type_ref {
diff --git a/crates/ra_hir/src/ty/traits/chalk.rs b/crates/ra_hir/src/ty/traits/chalk.rs
index 39ef92182..c694952f3 100644
--- a/crates/ra_hir/src/ty/traits/chalk.rs
+++ b/crates/ra_hir/src/ty/traits/chalk.rs
@@ -18,7 +18,10 @@ use crate::{
     db::HirDatabase,
     generics::GenericDef,
     ty::display::HirDisplay,
-    ty::{ApplicationTy, GenericPredicate, ProjectionTy, Substs, TraitRef, Ty, TypeCtor, TypeWalk},
+    ty::{
+        ApplicationTy, GenericPredicate, Namespace, ProjectionTy, Substs, TraitRef, Ty, TypeCtor,
+        TypeWalk,
+    },
     AssocItem, Crate, HasGenericParams, ImplBlock, Trait, TypeAlias,
 };
 
@@ -652,7 +655,7 @@ fn impl_block_datum(
         })
         .filter_map(|t| {
             let assoc_ty = trait_.associated_type_by_name(db, &t.name(db))?;
-            let ty = db.type_for_def(t.into(), crate::Namespace::Types).subst(&bound_vars);
+            let ty = db.type_for_def(t.into(), Namespace::Types).subst(&bound_vars);
             Some(chalk_rust_ir::AssociatedTyValue {
                 impl_id,
                 associated_ty_id: assoc_ty.to_chalk(db),