1 files changed, 15 insertions, 0 deletions
diff --git a/third_party/rust/syn/src/verbatim.rs b/third_party/rust/syn/src/verbatim.rs
new file mode 100644
index 0000000000..0686352f7a
--- /dev/null
+++ b/third_party/rust/syn/src/verbatim.rs
@@ -0,0 +1,15 @@
+use crate::parse::{ParseBuffer, ParseStream};
+use proc_macro2::TokenStream;
+use std::iter;
+
+pub fn between<'a>(begin: ParseBuffer<'a>, end: ParseStream<'a>) -> TokenStream {
+    let end = end.cursor();
+    let mut cursor = begin.cursor();
+    let mut tokens = TokenStream::new();
+    while cursor != end {
+        let (tt, next) = cursor.token_tree().unwrap();
+        tokens.extend(iter::once(tt));
+        cursor = next;
+    }
+    tokens
+}