diff options
Diffstat (limited to 'vendor/syn/src/print.rs')
-rw-r--r-- | vendor/syn/src/print.rs | 16 |
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), + } + } +} |