diff --git a/crates/ra_hir/src/adt.rs b/crates/ra_hir/src/adt.rs
index 36679e99b0..2b372333fc 100644
--- a/crates/ra_hir/src/adt.rs
+++ b/crates/ra_hir/src/adt.rs
@@ -11,7 +11,7 @@ use ra_syntax::{
 
 use crate::{
     Name, AsName, Struct, Union, Enum, EnumVariant, Crate, AstDatabase,
-    HirDatabase, HirFileId, StructField, FieldSource,
+    HirDatabase, HirFileId, StructField, FieldSource, Source,
     type_ref::TypeRef, DefDatabase,
 };
 
@@ -72,15 +72,15 @@ impl EnumVariant {
     pub(crate) fn source_impl(
         &self,
         db: &(impl DefDatabase + AstDatabase),
-    ) -> (HirFileId, TreeArc<ast::EnumVariant>) {
-        let (file_id, enum_def) = self.parent.source(db);
-        let var = variants(&*enum_def)
+    ) -> Source<TreeArc<ast::EnumVariant>> {
+        let src = self.parent.source(db);
+        let ast = variants(&*src.ast)
             .zip(db.enum_data(self.parent).variants.iter())
             .find(|(_syntax, (id, _))| *id == self.id)
             .unwrap()
             .0
             .to_owned();
-        (file_id, var)
+        Source { file_id: src.file_id, ast }
     }
     pub(crate) fn variant_data(&self, db: &impl DefDatabase) -> Arc<VariantData> {
         db.enum_data(self.parent).variants[self.id].variant_data.clone()
@@ -95,9 +95,9 @@ pub struct EnumData {
 
 impl EnumData {
     pub(crate) fn enum_data_query(db: &(impl DefDatabase + AstDatabase), e: Enum) -> Arc<EnumData> {
-        let (_file_id, enum_def) = e.source(db);
-        let name = enum_def.name().map(|n| n.as_name());
-        let variants = variants(&*enum_def)
+        let src = e.source(db);
+        let name = src.ast.name().map(|n| n.as_name());
+        let variants = variants(&*src.ast)
             .map(|var| EnumVariantData {
                 name: var.name().map(|it| it.as_name()),
                 variant_data: Arc::new(VariantData::new(var.kind())),
@@ -215,9 +215,8 @@ impl StructField {
                 (ss.file_id, ss.ast.kind())
             }
             VariantDef::EnumVariant(e) => {
-                let (file_id, source) = e.source(db);
-                es = source;
-                (file_id, es.kind())
+                es = e.source(db);
+                (es.file_id, es.ast.kind())
             }
         };
 
diff --git a/crates/ra_hir/src/code_model.rs b/crates/ra_hir/src/code_model.rs
index 3469da18a6..63fdca55ed 100644
--- a/crates/ra_hir/src/code_model.rs
+++ b/crates/ra_hir/src/code_model.rs
@@ -456,11 +456,8 @@ pub struct Enum {
 }
 
 impl Enum {
-    pub fn source(
-        self,
-        db: &(impl DefDatabase + AstDatabase),
-    ) -> (HirFileId, TreeArc<ast::EnumDef>) {
-        self.id.source(db)
+    pub fn source(self, db: &(impl DefDatabase + AstDatabase)) -> Source<TreeArc<ast::EnumDef>> {
+        self.id.source(db).into()
     }
 
     pub fn module(self, db: &impl HirDatabase) -> Module {
@@ -509,7 +506,7 @@ impl EnumVariant {
     pub fn source(
         &self,
         db: &(impl DefDatabase + AstDatabase),
-    ) -> (HirFileId, TreeArc<ast::EnumVariant>) {
+    ) -> Source<TreeArc<ast::EnumVariant>> {
         self.source_impl(db)
     }
     pub fn module(&self, db: &impl HirDatabase) -> Module {
diff --git a/crates/ra_hir/src/docs.rs b/crates/ra_hir/src/docs.rs
index edd937901a..70b9d13b2e 100644
--- a/crates/ra_hir/src/docs.rs
+++ b/crates/ra_hir/src/docs.rs
@@ -77,8 +77,8 @@ pub(crate) fn documentation_query(
             FieldSource::Pos(..) => return None,
         },
         DocDef::Struct(it) => docs_from_ast(&*it.source(db).ast),
-        DocDef::Enum(it) => docs_from_ast(&*it.source(db).1),
-        DocDef::EnumVariant(it) => docs_from_ast(&*it.source(db).1),
+        DocDef::Enum(it) => docs_from_ast(&*it.source(db).ast),
+        DocDef::EnumVariant(it) => docs_from_ast(&*it.source(db).ast),
         DocDef::Static(it) => docs_from_ast(&*it.source(db).1),
         DocDef::Const(it) => docs_from_ast(&*it.source(db).1),
         DocDef::Function(it) => docs_from_ast(&*it.source(db).1),
diff --git a/crates/ra_hir/src/generics.rs b/crates/ra_hir/src/generics.rs
index 294a007216..2a92d59450 100644
--- a/crates/ra_hir/src/generics.rs
+++ b/crates/ra_hir/src/generics.rs
@@ -71,7 +71,7 @@ impl GenericParams {
             GenericDef::Function(it) => generics.fill(&*it.source(db).1, start),
             GenericDef::Struct(it) => generics.fill(&*it.source(db).ast, start),
             GenericDef::Union(it) => generics.fill(&*it.source(db).1, start),
-            GenericDef::Enum(it) => generics.fill(&*it.source(db).1, start),
+            GenericDef::Enum(it) => generics.fill(&*it.source(db).ast, start),
             GenericDef::Trait(it) => {
                 // traits get the Self type as an implicit first type parameter
                 generics.params.push(GenericParam {
diff --git a/crates/ra_hir/src/lib.rs b/crates/ra_hir/src/lib.rs
index 0e4aaf678e..90e3f1275c 100644
--- a/crates/ra_hir/src/lib.rs
+++ b/crates/ra_hir/src/lib.rs
@@ -81,5 +81,5 @@ pub use self::code_model::{
     StructField, FieldSource,
     Static, Const, ConstSignature,
     Trait, TypeAlias, MacroDef, Container,
-    BuiltinType,
+    BuiltinType, Source,
 };
diff --git a/crates/ra_ide_api/src/display/navigation_target.rs b/crates/ra_ide_api/src/display/navigation_target.rs
index c02bc005b1..7c68bb41cc 100644
--- a/crates/ra_ide_api/src/display/navigation_target.rs
+++ b/crates/ra_ide_api/src/display/navigation_target.rs
@@ -207,12 +207,12 @@ impl NavigationTarget {
                 )
             }
             hir::AdtDef::Enum(s) => {
-                let (file_id, node) = s.source(db);
+                let src = s.source(db);
                 NavigationTarget::from_named(
-                    file_id.original_file(db),
-                    &*node,
-                    node.doc_comment_text(),
-                    node.short_label(),
+                    src.file_id.original_file(db),
+                    &*src.ast,
+                    src.ast.doc_comment_text(),
+                    src.ast.short_label(),
                 )
             }
         }
@@ -225,24 +225,9 @@ impl NavigationTarget {
         let nav = match module_def {
             hir::ModuleDef::Module(module) => NavigationTarget::from_module(db, module),
             hir::ModuleDef::Function(func) => NavigationTarget::from_function(db, func),
-            hir::ModuleDef::Struct(s) => {
-                let src = s.source(db);
-                NavigationTarget::from_named(
-                    src.file_id.original_file(db),
-                    &*src.ast,
-                    src.ast.doc_comment_text(),
-                    src.ast.short_label(),
-                )
-            }
-            hir::ModuleDef::Union(s) => {
-                let (file_id, node) = s.source(db);
-                NavigationTarget::from_named(
-                    file_id.original_file(db),
-                    &*node,
-                    node.doc_comment_text(),
-                    node.short_label(),
-                )
-            }
+            hir::ModuleDef::Struct(it) => NavigationTarget::from_adt_def(db, it.into()),
+            hir::ModuleDef::Enum(it) => NavigationTarget::from_adt_def(db, it.into()),
+            hir::ModuleDef::Union(it) => NavigationTarget::from_adt_def(db, it.into()),
             hir::ModuleDef::Const(s) => {
                 let (file_id, node) = s.source(db);
                 NavigationTarget::from_named(
@@ -261,22 +246,13 @@ impl NavigationTarget {
                     node.short_label(),
                 )
             }
-            hir::ModuleDef::Enum(e) => {
-                let (file_id, node) = e.source(db);
-                NavigationTarget::from_named(
-                    file_id.original_file(db),
-                    &*node,
-                    node.doc_comment_text(),
-                    node.short_label(),
-                )
-            }
             hir::ModuleDef::EnumVariant(var) => {
-                let (file_id, node) = var.source(db);
+                let src = var.source(db);
                 NavigationTarget::from_named(
-                    file_id.original_file(db),
-                    &*node,
-                    node.doc_comment_text(),
-                    node.short_label(),
+                    src.file_id.original_file(db),
+                    &*src.ast,
+                    src.ast.doc_comment_text(),
+                    src.ast.short_label(),
                 )
             }
             hir::ModuleDef::Trait(e) => {
diff --git a/crates/ra_ide_api/src/hover.rs b/crates/ra_ide_api/src/hover.rs
index 80445761ce..ee0f2dde88 100644
--- a/crates/ra_ide_api/src/hover.rs
+++ b/crates/ra_ide_api/src/hover.rs
@@ -144,12 +144,12 @@ pub(crate) fn hover(db: &RootDatabase, position: FilePosition) -> Option<RangeIn
                         res.extend(hover_text(it.doc_comment_text(), it.short_label()))
                     }
                     hir::ModuleDef::Enum(it) => {
-                        let it = it.source(db).1;
-                        res.extend(hover_text(it.doc_comment_text(), it.short_label()))
+                        let src = it.source(db);
+                        res.extend(hover_text(src.ast.doc_comment_text(), src.ast.short_label()))
                     }
                     hir::ModuleDef::EnumVariant(it) => {
-                        let it = it.source(db).1;
-                        res.extend(hover_text(it.doc_comment_text(), it.short_label()))
+                        let src = it.source(db);
+                        res.extend(hover_text(src.ast.doc_comment_text(), src.ast.short_label()))
                     }
                     hir::ModuleDef::Const(it) => {
                         let it = it.source(db).1;
@@ -187,8 +187,11 @@ pub(crate) fn hover(db: &RootDatabase, position: FilePosition) -> Option<RangeIn
                             res.extend(hover_text(it.doc_comment_text(), it.short_label()))
                         }
                         hir::AdtDef::Enum(it) => {
-                            let it = it.source(db).1;
-                            res.extend(hover_text(it.doc_comment_text(), it.short_label()))
+                            let src = it.source(db);
+                            res.extend(hover_text(
+                                src.ast.doc_comment_text(),
+                                src.ast.short_label(),
+                            ))
                         }
                     }
                 }