From 51dd06566e65f17f76db7a22fa3ee4d0ab9d33bb Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Fri, 10 Jul 2020 16:29:14 +0200
Subject: Complete params in nested fns

---
 crates/ra_ide/src/completion/complete_fn_param.rs | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

(limited to 'crates/ra_ide')

diff --git a/crates/ra_ide/src/completion/complete_fn_param.rs b/crates/ra_ide/src/completion/complete_fn_param.rs
index ee91bbdea..db2abb4f1 100644
--- a/crates/ra_ide/src/completion/complete_fn_param.rs
+++ b/crates/ra_ide/src/completion/complete_fn_param.rs
@@ -18,16 +18,12 @@ pub(super) fn complete_fn_param(acc: &mut Completions, ctx: &CompletionContext)
     }
 
     let mut params = FxHashMap::default();
-    let mut me = None;
+    let me = ctx.token.ancestors().find_map(ast::FnDef::cast);
     for node in ctx.token.parent().ancestors() {
         let items = match_ast! {
             match node {
                 ast::SourceFile(it) => it.items(),
                 ast::ItemList(it) => it.items(),
-                ast::FnDef(it) => {
-                    me = Some(it);
-                    continue;
-                },
                 _ => continue,
             }
         };
@@ -43,6 +39,7 @@ pub(super) fn complete_fn_param(acc: &mut Completions, ctx: &CompletionContext)
             }
         }
     }
+
     params
         .into_iter()
         .filter_map(|(label, param)| {
@@ -111,4 +108,18 @@ pub(crate) trait SourceRoot {
             "#]],
         );
     }
+
+    #[test]
+    fn completes_param_in_inner_function() {
+        check(
+            r#"
+fn outer(text: String) {
+    fn inner(<|>)
+}
+"#,
+            expect![[r#"
+                bn text: String
+            "#]],
+        )
+    }
 }
-- 
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