From 128dc5355b81b0217fede903ae79f75ba0124716 Mon Sep 17 00:00:00 2001
From: uHOOCCOOHu <hooccooh1896@gmail.com>
Date: Fri, 27 Sep 2019 02:04:47 +0800
Subject: Refactor `Name` ready for hygienic macro

---
 crates/ra_syntax/src/ast/extensions.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'crates/ra_syntax/src/ast')

diff --git a/crates/ra_syntax/src/ast/extensions.rs b/crates/ra_syntax/src/ast/extensions.rs
index 5f7e9f5b1..0433edb84 100644
--- a/crates/ra_syntax/src/ast/extensions.rs
+++ b/crates/ra_syntax/src/ast/extensions.rs
@@ -21,6 +21,16 @@ impl ast::NameRef {
     pub fn text(&self) -> &SmolStr {
         text_of_first_token(self.syntax())
     }
+
+    pub fn as_tuple_field(&self) -> Option<usize> {
+        self.syntax().children_with_tokens().find_map(|c| {
+            if c.kind() == SyntaxKind::INT_NUMBER {
+                c.as_token().and_then(|tok| tok.text().as_str().parse().ok())
+            } else {
+                None
+            }
+        })
+    }
 }
 
 fn text_of_first_token(node: &SyntaxNode) -> &SmolStr {
-- 
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