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-rw-r--r--rust/macros/quote.rs14
1 files changed, 8 insertions, 6 deletions
diff --git a/rust/macros/quote.rs b/rust/macros/quote.rs
index c8e08b3c1e4c..dddbb4e6f4cb 100644
--- a/rust/macros/quote.rs
+++ b/rust/macros/quote.rs
@@ -39,12 +39,14 @@ impl ToTokens for TokenStream {
/// [`quote_spanned!`](https://docs.rs/quote/latest/quote/macro.quote_spanned.html) macro from the
/// `quote` crate but provides only just enough functionality needed by the current `macros` crate.
macro_rules! quote_spanned {
- ($span:expr => $($tt:tt)*) => {
- #[allow(clippy::vec_init_then_push)]
- {
- let mut tokens = ::std::vec::Vec::new();
- let span = $span;
- quote_spanned!(@proc tokens span $($tt)*);
+ ($span:expr => $($tt:tt)*) => {{
+ let mut tokens;
+ #[allow(clippy::vec_init_then_push)]
+ {
+ tokens = ::std::vec::Vec::new();
+ let span = $span;
+ quote_spanned!(@proc tokens span $($tt)*);
+ }
::proc_macro::TokenStream::from_iter(tokens)
}};
(@proc $v:ident $span:ident) => {};