diff --git a/crates/ra_hir_def/src/keys.rs b/crates/ra_hir_def/src/keys.rs
index ada145379c8..4611c6e3867 100644
--- a/crates/ra_hir_def/src/keys.rs
+++ b/crates/ra_hir_def/src/keys.rs
@@ -8,8 +8,8 @@ use rustc_hash::FxHashMap;
 
 use crate::{
     dyn_map::{DynMap, Policy},
-    ConstId, EnumVariantId, FunctionId, ImplId, StaticId, StructFieldId, StructId, TraitId,
-    TypeAliasId, TypeParamId, EnumId, UnionId,
+    ConstId, EnumId, EnumVariantId, FunctionId, ImplId, StaticId, StructFieldId, StructId, TraitId,
+    TypeAliasId, TypeParamId, UnionId,
 };
 
 type Key<K, V> = crate::dyn_map::Key<InFile<K>, V, AstPtrPolicy<K, V>>;
diff --git a/crates/ra_hir_def/src/lib.rs b/crates/ra_hir_def/src/lib.rs
index c9e4e6a0f55..f085bbe872d 100644
--- a/crates/ra_hir_def/src/lib.rs
+++ b/crates/ra_hir_def/src/lib.rs
@@ -40,14 +40,14 @@ mod test_db;
 #[cfg(test)]
 mod marks;
 
-use std::hash::{Hash, Hasher};
+use std::hash::Hash;
 
-use hir_expand::{ast_id_map::FileAstId, db::AstDatabase, AstId, HirFileId, InFile, MacroDefId};
+use hir_expand::{ast_id_map::FileAstId, AstId, HirFileId, InFile, MacroDefId};
 use ra_arena::{impl_arena_id, RawId};
 use ra_db::{impl_intern_key, salsa, CrateId};
-use ra_syntax::{ast, AstNode};
+use ra_syntax::ast;
 
-use crate::{builtin_type::BuiltinType, db::InternDatabase};
+use crate::builtin_type::BuiltinType;
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub struct LocalImportId(RawId);
@@ -65,63 +65,6 @@ pub struct ModuleId {
 pub struct LocalModuleId(RawId);
 impl_arena_id!(LocalModuleId);
 
-#[derive(Debug)]
-pub struct ItemLoc<N: AstNode> {
-    pub(crate) module: ModuleId,
-    ast_id: AstId<N>,
-}
-
-impl<N: AstNode> PartialEq for ItemLoc<N> {
-    fn eq(&self, other: &Self) -> bool {
-        self.module == other.module && self.ast_id == other.ast_id
-    }
-}
-impl<N: AstNode> Eq for ItemLoc<N> {}
-impl<N: AstNode> Hash for ItemLoc<N> {
-    fn hash<H: Hasher>(&self, hasher: &mut H) {
-        self.module.hash(hasher);
-        self.ast_id.hash(hasher);
-    }
-}
-
-impl<N: AstNode> Clone for ItemLoc<N> {
-    fn clone(&self) -> ItemLoc<N> {
-        ItemLoc { module: self.module, ast_id: self.ast_id }
-    }
-}
-
-#[derive(Clone, Copy)]
-pub struct LocationCtx<DB> {
-    db: DB,
-    module: ModuleId,
-    file_id: HirFileId,
-}
-
-impl<'a, DB> LocationCtx<&'a DB> {
-    pub fn new(db: &'a DB, module: ModuleId, file_id: HirFileId) -> LocationCtx<&'a DB> {
-        LocationCtx { db, module, file_id }
-    }
-}
-
-pub trait AstItemDef<N: AstNode>: salsa::InternKey + Clone {
-    fn intern(db: &impl InternDatabase, loc: ItemLoc<N>) -> Self;
-    fn lookup_intern(self, db: &impl InternDatabase) -> ItemLoc<N>;
-
-    fn from_ast_id(ctx: LocationCtx<&impl InternDatabase>, ast_id: FileAstId<N>) -> Self {
-        let loc = ItemLoc { module: ctx.module, ast_id: AstId::new(ctx.file_id, ast_id) };
-        Self::intern(ctx.db, loc)
-    }
-    fn source(self, db: &(impl AstDatabase + InternDatabase)) -> InFile<N> {
-        let loc = self.lookup_intern(db);
-        let value = loc.ast_id.to_node(db);
-        InFile { file_id: loc.ast_id.file_id, value }
-    }
-    fn module(self, db: &impl InternDatabase) -> ModuleId {
-        let loc = self.lookup_intern(db);
-        loc.module
-    }
-}
-
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub struct FunctionId(salsa::InternId);
 impl_intern_key!(FunctionId);