3 // compile-flags: --crate-type proc-macro
5 #![crate_type="proc-macro"]
6 #![crate_name="some_macros"]
8 extern crate proc_macro;
10 use proc_macro::TokenStream;
12 macro_rules! make_attr_macro {
14 /// Generated doc comment
15 #[proc_macro_attribute]
16 pub fn $name(args: TokenStream, input: TokenStream) -> TokenStream {
22 make_attr_macro!(first_attr);
23 make_attr_macro!(second_attr);
25 /// a proc-macro that swallows its input and does nothing.
27 pub fn some_proc_macro(_input: TokenStream) -> TokenStream {
31 /// a proc-macro attribute that passes its item through verbatim.
32 #[proc_macro_attribute]
33 pub fn some_proc_attr(_attr: TokenStream, item: TokenStream) -> TokenStream {
37 /// a derive attribute that adds nothing to its input.
38 #[proc_macro_derive(SomeDerive)]
39 pub fn some_derive(_item: TokenStream) -> TokenStream {
43 /// Doc comment from the original crate
45 pub fn reexported_macro(_input: TokenStream) -> TokenStream {