From 66a5fd375a60ec98c35acd9b4d5b03c6057aa36c Mon Sep 17 00:00:00 2001
From: Jonas Schievink <jonasschievink@gmail.com>
Date: Wed, 2 Jun 2021 16:50:44 +0200
Subject: Place extracted type alias outside of impl

---
 .../ide_assists/src/handlers/extract_type_alias.rs | 28 +++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

(limited to 'crates/ide_assists')

diff --git a/crates/ide_assists/src/handlers/extract_type_alias.rs b/crates/ide_assists/src/handlers/extract_type_alias.rs
index 442a209b9..998e0de7b 100644
--- a/crates/ide_assists/src/handlers/extract_type_alias.rs
+++ b/crates/ide_assists/src/handlers/extract_type_alias.rs
@@ -25,7 +25,12 @@ pub(crate) fn extract_type_alias(acc: &mut Assists, ctx: &AssistContext) -> Opti
     }
 
     let node = ctx.find_node_at_range::<ast::Type>()?;
-    let insert = ctx.find_node_at_offset::<ast::Item>()?.syntax().text_range().start();
+    let insert = ctx
+        .find_node_at_offset::<ast::Impl>()
+        .map(|imp| imp.syntax().clone())
+        .or_else(|| ctx.find_node_at_offset::<ast::Item>().map(|item| item.syntax().clone()))?
+        .text_range()
+        .start();
     let target = node.syntax().text_range();
 
     acc.add(
@@ -142,6 +147,27 @@ type $0Type = u8;
 
 struct S {
     field: (Type,),
+}
+            "#,
+        );
+    }
+
+    #[test]
+    fn extract_from_impl() {
+        // When invoked in an impl, extracted type alias should be placed next to the impl, not
+        // inside.
+        check_assist(
+            extract_type_alias,
+            r#"
+impl S {
+    fn f() -> $0(u8, u8)$0 {}
+}
+            "#,
+            r#"
+type $0Type = (u8, u8);
+
+impl S {
+    fn f() -> Type {}
 }
             "#,
         );
-- 
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