From 798968e1e3a7d9eafa0c27c857571cdc347c34a7 Mon Sep 17 00:00:00 2001
From: Jonas Schievink <jonasschievink@gmail.com>
Date: Fri, 11 Dec 2020 14:24:02 +0100
Subject: Move TokenExpander to base_db and rename it

It's only used to break the dependency to proc_macro_api
---
 crates/tt/src/lib.rs | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

(limited to 'crates/tt')

diff --git a/crates/tt/src/lib.rs b/crates/tt/src/lib.rs
index 6c1bf8d09..8301dc28a 100644
--- a/crates/tt/src/lib.rs
+++ b/crates/tt/src/lib.rs
@@ -1,7 +1,7 @@
 //! `tt` crate defines a `TokenTree` data structure: this is the interface (both
 //! input and output) of macros. It closely mirrors `proc_macro` crate's
 //! `TokenTree`.
-use std::{fmt, panic::RefUnwindSafe};
+use std::fmt;
 
 use stdx::impl_from;
 
@@ -247,8 +247,3 @@ impl fmt::Display for ExpansionError {
         }
     }
 }
-
-pub trait TokenExpander: fmt::Debug + Send + Sync + RefUnwindSafe {
-    fn expand(&self, subtree: &Subtree, attrs: Option<&Subtree>)
-        -> Result<Subtree, ExpansionError>;
-}
-- 
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