| // force-host |
| // no-prefer-dynamic |
| |
| #![crate_type="proc-macro"] |
| #![crate_name="some_macros"] |
| |
| extern crate proc_macro; |
| |
| use proc_macro::TokenStream; |
| |
| /// a proc-macro that swallows its input and does nothing. |
| #[proc_macro] |
| pub fn some_proc_macro(_input: TokenStream) -> TokenStream { |
| TokenStream::new() |
| } |
| |
| /// a proc-macro attribute that passes its item through verbatim. |
| #[proc_macro_attribute] |
| pub fn some_proc_attr(_attr: TokenStream, item: TokenStream) -> TokenStream { |
| item |
| } |
| |
| /// a derive attribute that adds nothing to its input. |
| #[proc_macro_derive(SomeDerive)] |
| pub fn some_derive(_item: TokenStream) -> TokenStream { |
| TokenStream::new() |
| } |
| |
