From ef416e0154767619fcbfa0d1682b28bd338a8ce9 Mon Sep 17 00:00:00 2001
From: oxalica <oxalicc@pm.me>
Date: Sun, 14 Mar 2021 20:03:39 +0800
Subject: Impl HirDisplay for function hover message

---
 crates/ide/src/hover.rs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'crates/ide/src/hover.rs')

diff --git a/crates/ide/src/hover.rs b/crates/ide/src/hover.rs
index f872b68cf..1e4c247c0 100644
--- a/crates/ide/src/hover.rs
+++ b/crates/ide/src/hover.rs
@@ -354,7 +354,7 @@ fn hover_for_definition(
                 },
                 mod_path,
             ),
-            ModuleDef::Function(it) => from_def_source(db, it, mod_path),
+            ModuleDef::Function(it) => from_hir_fmt(db, it, mod_path),
             ModuleDef::Adt(Adt::Struct(it)) => from_def_source(db, it, mod_path),
             ModuleDef::Adt(Adt::Union(it)) => from_def_source(db, it, mod_path),
             ModuleDef::Adt(Adt::Enum(it)) => from_def_source(db, it, mod_path),
@@ -383,6 +383,14 @@ fn hover_for_definition(
         },
     };
 
+    fn from_hir_fmt<D>(db: &RootDatabase, def: D, mod_path: Option<String>) -> Option<Markup>
+    where
+        D: HasAttrs + HirDisplay,
+    {
+        let label = def.display(db).to_string();
+        from_def_source_labeled(db, def, Some(label), mod_path)
+    }
+
     fn from_def_source<A, D>(db: &RootDatabase, def: D, mod_path: Option<String>) -> Option<Markup>
     where
         D: HasSource<Ast = A> + HasAttrs + Copy,
-- 
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