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-rw-r--r--crates/tt/src/lib.rs7
1 files changed, 1 insertions, 6 deletions
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 @@
1//! `tt` crate defines a `TokenTree` data structure: this is the interface (both 1//! `tt` crate defines a `TokenTree` data structure: this is the interface (both
2//! input and output) of macros. It closely mirrors `proc_macro` crate's 2//! input and output) of macros. It closely mirrors `proc_macro` crate's
3//! `TokenTree`. 3//! `TokenTree`.
4use std::{fmt, panic::RefUnwindSafe}; 4use std::fmt;
5 5
6use stdx::impl_from; 6use stdx::impl_from;
7 7
@@ -247,8 +247,3 @@ impl fmt::Display for ExpansionError {
247 } 247 }
248 } 248 }
249} 249}
250
251pub trait TokenExpander: fmt::Debug + Send + Sync + RefUnwindSafe {
252 fn expand(&self, subtree: &Subtree, attrs: Option<&Subtree>)
253 -> Result<Subtree, ExpansionError>;
254}