From 90122542b2708a4dde36758d1ff5848764858ac0 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Mon, 4 Mar 2019 17:47:02 +0300
Subject: allow `mut ident` patterns in trait methods

closes #928
---
 crates/ra_parser/src/grammar/params.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'crates/ra_parser')

diff --git a/crates/ra_parser/src/grammar/params.rs b/crates/ra_parser/src/grammar/params.rs
index a70f067f9..d027578b6 100644
--- a/crates/ra_parser/src/grammar/params.rs
+++ b/crates/ra_parser/src/grammar/params.rs
@@ -83,9 +83,10 @@ fn value_parameter(p: &mut Parser, flavor: Flavor) {
 
             // test trait_fn_placeholder_parameter
             // trait Foo {
-            //     fn bar(_: u64);
+            //     fn bar(_: u64, mut x: i32);
             // }
             if (la0 == IDENT || la0 == UNDERSCORE) && la1 == COLON
+                || la0 == MUT_KW && la1 == IDENT && la2 == COLON
                 || la0 == AMP && la1 == IDENT && la2 == COLON
                 || la0 == AMP && la1 == MUT_KW && la2 == IDENT && la3 == COLON
             {
-- 
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