From decc4cb084e7cfb9be845bf4b5ad06ff2c4c42c2 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Sat, 7 Dec 2019 19:14:01 +0100
Subject: Show type hints for & patterns

---
 crates/ra_ide/src/inlay_hints.rs | 31 +++++++++++++++----------------
 1 file changed, 15 insertions(+), 16 deletions(-)

(limited to 'crates/ra_ide')

diff --git a/crates/ra_ide/src/inlay_hints.rs b/crates/ra_ide/src/inlay_hints.rs
index 59eced9d7..3730121af 100644
--- a/crates/ra_ide/src/inlay_hints.rs
+++ b/crates/ra_ide/src/inlay_hints.rs
@@ -122,18 +122,11 @@ fn get_leaf_pats(root_pat: ast::Pat) -> Vec<ast::Pat> {
 
     while let Some(maybe_leaf_pat) = pats_to_process.pop_front() {
         match &maybe_leaf_pat {
-            ast::Pat::BindPat(bind_pat) => {
-                if let Some(pat) = bind_pat.pat() {
-                    pats_to_process.push_back(pat);
-                } else {
-                    leaf_pats.push(maybe_leaf_pat);
-                }
-            }
-            ast::Pat::TuplePat(tuple_pat) => {
-                for arg_pat in tuple_pat.args() {
-                    pats_to_process.push_back(arg_pat);
-                }
-            }
+            ast::Pat::BindPat(bind_pat) => match bind_pat.pat() {
+                Some(pat) => pats_to_process.push_back(pat),
+                _ => leaf_pats.push(maybe_leaf_pat),
+            },
+            ast::Pat::TuplePat(tuple_pat) => pats_to_process.extend(tuple_pat.args()),
             ast::Pat::RecordPat(record_pat) => {
                 if let Some(pat_list) = record_pat.record_field_pat_list() {
                     pats_to_process.extend(
@@ -151,10 +144,9 @@ fn get_leaf_pats(root_pat: ast::Pat) -> Vec<ast::Pat> {
                 }
             }
             ast::Pat::TupleStructPat(tuple_struct_pat) => {
-                for arg_pat in tuple_struct_pat.args() {
-                    pats_to_process.push_back(arg_pat);
-                }
+                pats_to_process.extend(tuple_struct_pat.args())
             }
+            ast::Pat::RefPat(ref_pat) => pats_to_process.extend(ref_pat.pat()),
             _ => (),
         }
     }
@@ -163,9 +155,10 @@ fn get_leaf_pats(root_pat: ast::Pat) -> Vec<ast::Pat> {
 
 #[cfg(test)]
 mod tests {
-    use crate::mock_analysis::single_file;
     use insta::assert_debug_snapshot;
 
+    use crate::mock_analysis::single_file;
+
     #[test]
     fn let_statement() {
         let (analysis, file_id) = single_file(
@@ -202,6 +195,7 @@ fn main() {
 
     let test = (42, 'a');
     let (a, (b, c, (d, e), f)) = (2, (3, 4, (6.6, 7.7), 5));
+    let &x = &92;
 }"#,
         );
 
@@ -257,6 +251,11 @@ fn main() {
                 kind: TypeHint,
                 label: "f64",
             },
+            InlayHint {
+                range: [627; 628),
+                kind: TypeHint,
+                label: "i32",
+            },
         ]
         "###
         );
-- 
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