From 0a19f4f1b4a12bd50032249be4c9298284c08e3c Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Mon, 4 Mar 2019 16:38:54 +0300
Subject: allow aliases in underscores

this helps with

    use foo::Trait as _;

syntax
---
 crates/ra_parser/src/grammar.rs                | 4 +++-
 crates/ra_parser/src/grammar/items/use_item.rs | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)

(limited to 'crates/ra_parser/src')

diff --git a/crates/ra_parser/src/grammar.rs b/crates/ra_parser/src/grammar.rs
index f94702e97..c9941fe93 100644
--- a/crates/ra_parser/src/grammar.rs
+++ b/crates/ra_parser/src/grammar.rs
@@ -129,7 +129,9 @@ fn opt_alias(p: &mut Parser) {
     if p.at(AS_KW) {
         let m = p.start();
         p.bump();
-        name(p);
+        if !p.eat(UNDERSCORE) {
+            name(p);
+        }
         m.complete(p, ALIAS);
     }
 }
diff --git a/crates/ra_parser/src/grammar/items/use_item.rs b/crates/ra_parser/src/grammar/items/use_item.rs
index 5111d37eb..b36612726 100644
--- a/crates/ra_parser/src/grammar/items/use_item.rs
+++ b/crates/ra_parser/src/grammar/items/use_item.rs
@@ -76,6 +76,7 @@ fn use_tree(p: &mut Parser) {
                     //  yet::another::path,
                     //  running::out::of::synonyms::for_::different::*
                     // };
+                    // use Trait as _;
                     opt_alias(p);
                 }
                 COLONCOLON => {
-- 
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