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-rw-r--r--vendor/syn/src/print.rs16
1 files changed, 16 insertions, 0 deletions
diff --git a/vendor/syn/src/print.rs b/vendor/syn/src/print.rs
new file mode 100644
index 0000000..0740993
--- /dev/null
+++ b/vendor/syn/src/print.rs
@@ -0,0 +1,16 @@
+use proc_macro2::TokenStream;
+use quote::ToTokens;
+
+pub(crate) struct TokensOrDefault<'a, T: 'a>(pub &'a Option<T>);
+
+impl<'a, T> ToTokens for TokensOrDefault<'a, T>
+where
+ T: ToTokens + Default,
+{
+ fn to_tokens(&self, tokens: &mut TokenStream) {
+ match self.0 {
+ Some(t) => t.to_tokens(tokens),
+ None => T::default().to_tokens(tokens),
+ }
+ }
+}