From 5c594bcb48f01bdcf3068f72cefffda337a03533 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Fri, 19 Jul 2019 18:22:00 +0300
Subject: cleanup casts

---
 crates/ra_syntax/src/ast.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(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 ceb603c50..4a38197f6 100644
--- a/crates/ra_syntax/src/ast.rs
+++ b/crates/ra_syntax/src/ast.rs
@@ -10,7 +10,7 @@ use std::marker::PhantomData;
 
 use crate::{
     syntax_node::{SyntaxNode, SyntaxNodeChildren, SyntaxToken},
-    SmolStr,
+    SmolStr, SyntaxKind,
 };
 
 pub use self::{
@@ -26,6 +26,8 @@ pub use self::{
 /// the same representation: a pointer to the tree root and a pointer to the
 /// node itself.
 pub trait AstNode: Clone {
+    fn can_cast(kind: SyntaxKind) -> bool;
+
     fn cast(syntax: SyntaxNode) -> Option<Self>
     where
         Self: Sized;
-- 
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