From 18f6a995d0fc1f45099f3cc810a5d55d5401b41b Mon Sep 17 00:00:00 2001
From: Florian Diebold <flodiebold@gmail.com>
Date: Thu, 5 Dec 2019 15:10:33 +0100
Subject: Add expansion infrastructure for derive macros

---
 crates/ra_hir_def/src/nameres/raw.rs | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'crates/ra_hir_def/src/nameres/raw.rs')

diff --git a/crates/ra_hir_def/src/nameres/raw.rs b/crates/ra_hir_def/src/nameres/raw.rs
index de4e706c2..a2821e1c3 100644
--- a/crates/ra_hir_def/src/nameres/raw.rs
+++ b/crates/ra_hir_def/src/nameres/raw.rs
@@ -184,6 +184,21 @@ pub(super) enum DefKind {
     TypeAlias(FileAstId<ast::TypeAliasDef>),
 }
 
+impl DefKind {
+    pub fn ast_id(&self) -> FileAstId<ast::ModuleItem> {
+        match self {
+            DefKind::Function(it) => it.upcast(),
+            DefKind::Struct(it) => it.upcast(),
+            DefKind::Union(it) => it.upcast(),
+            DefKind::Enum(it) => it.upcast(),
+            DefKind::Const(it) => it.upcast(),
+            DefKind::Static(it) => it.upcast(),
+            DefKind::Trait(it) => it.upcast(),
+            DefKind::TypeAlias(it) => it.upcast(),
+        }
+    }
+}
+
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub(super) struct Macro(RawId);
 impl_arena_id!(Macro);
-- 
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