From 29054e02fbc7a858d9d4a6efd61583ac45b3213b Mon Sep 17 00:00:00 2001
From: Lukas Wirth <lukastw97@gmail.com>
Date: Tue, 15 Jun 2021 21:44:07 +0200
Subject: Highlight unsafe trait refs as unsafe only in impl blocks and
 definitions

---
 crates/syntax/src/ast/node_ext.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'crates/syntax/src/ast/node_ext.rs')

diff --git a/crates/syntax/src/ast/node_ext.rs b/crates/syntax/src/ast/node_ext.rs
index 3d27d2c1a..2bd9ad867 100644
--- a/crates/syntax/src/ast/node_ext.rs
+++ b/crates/syntax/src/ast/node_ext.rs
@@ -325,6 +325,15 @@ impl ast::Impl {
         let second = types.next();
         (first, second)
     }
+
+    pub fn for_trait_name_ref(name_ref: &ast::NameRef) -> Option<ast::Impl> {
+        let this = name_ref.syntax().ancestors().find_map(ast::Impl::cast)?;
+        if this.trait_()?.syntax().text_range().start() == name_ref.syntax().text_range().start() {
+            Some(this)
+        } else {
+            None
+        }
+    }
 }
 
 #[derive(Debug, Clone, PartialEq, Eq)]
-- 
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