From c8f858d04323f93a4bacb143d92c976b2bc1e179 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Sun, 17 Nov 2019 19:11:43 +0300
Subject: Make shift an implementation detail of mbe

---
 crates/ra_hir_expand/src/db.rs | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

(limited to 'crates/ra_hir_expand/src/db.rs')

diff --git a/crates/ra_hir_expand/src/db.rs b/crates/ra_hir_expand/src/db.rs
index 5eadee9c2..9de7c1ea8 100644
--- a/crates/ra_hir_expand/src/db.rs
+++ b/crates/ra_hir_expand/src/db.rs
@@ -32,10 +32,17 @@ impl TokenExpander {
         }
     }
 
-    pub fn shift(&self) -> u32 {
+    pub fn map_id_down(&self, id: tt::TokenId) -> tt::TokenId {
         match self {
-            TokenExpander::MacroRules(it) => it.shift(),
-            TokenExpander::Builtin(_) => 0,
+            TokenExpander::MacroRules(it) => it.map_id_down(id),
+            TokenExpander::Builtin(..) => id,
+        }
+    }
+
+    pub fn map_id_up(&self, id: tt::TokenId) -> (tt::TokenId, mbe::Origin) {
+        match self {
+            TokenExpander::MacroRules(it) => it.map_id_up(id),
+            TokenExpander::Builtin(..) => (id, mbe::Origin::Def),
         }
     }
 }
-- 
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