From 6eb070d6613644b6698a5ce6454d006662c84d8a Mon Sep 17 00:00:00 2001
From: Ville Penttinen <villem.penttinen@gmail.com>
Date: Tue, 26 Feb 2019 11:35:57 +0200
Subject: Add new trait TypeAscriptionOwner

This trait should be implemented for nodes which have an ascribed type,
e.g. thing : Type. Such as let, const, static, param, named struct fields.
---
 crates/ra_syntax/src/ast.rs | 6 ++++++
 1 file changed, 6 insertions(+)

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

diff --git a/crates/ra_syntax/src/ast.rs b/crates/ra_syntax/src/ast.rs
index 56fb7c20c..81c709bfb 100644
--- a/crates/ra_syntax/src/ast.rs
+++ b/crates/ra_syntax/src/ast.rs
@@ -31,6 +31,12 @@ pub trait AstToken: AstNode {
     }
 }
 
+pub trait TypeAscriptionOwner: AstNode {
+    fn ascribed_type(&self) -> Option<&TypeRef> {
+        child_opt(self)
+    }
+}
+
 pub trait NameOwner: AstNode {
     fn name(&self) -> Option<&Name> {
         child_opt(self)
-- 
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