Implement ToTokens for syn::parse::Nothing

dtolnay · Mar 16, 2024 · 4f6c052 · 4f6c052
1 parent 3f37543
commit 4f6c052
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/src/parse.rs b/src/parse.rs
@@ -188,6 +188,8 @@ use crate::lookahead;
 use crate::punctuated::Punctuated;
 use crate::token::Token;
 use proc_macro2::{Delimiter, Group, Literal, Punct, Span, TokenStream, TokenTree};
+#[cfg(feature = "printing")]
+use quote::ToTokens;
 use std::cell::Cell;
 use std::fmt::{self, Debug, Display};
 #[cfg(feature = "extra-traits")]
@@ -1354,6 +1356,14 @@ impl Parse for Nothing {
     }
 }
 
+#[cfg(feature = "printing")]
+#[cfg_attr(doc_cfg, doc(cfg(feature = "printing")))]
+impl ToTokens for Nothing {
+    fn to_tokens(&self, tokens: &mut TokenStream) {
+        let _ = tokens;
+    }
+}
+
 #[cfg(feature = "clone-impls")]
 #[cfg_attr(doc_cfg, doc(cfg(feature = "clone-impls")))]
 impl Clone for Nothing {