10 lines
235 B
Rust
10 lines
235 B
Rust
|
extern crate proc_macro;
|
||
|
|
|
||
|
|
use proc_macro::TokenStream;
|
||
|
|
|
||
|
|
#[proc_macro_derive(Foo, attributes(foo))]
|
||
|
|
pub fn derive(input: TokenStream) -> TokenStream {
|
||
|
|
assert!(!input.to_string().contains("#[cfg(any())]"));
|
||
|
|
"".parse().unwrap()
|
||
|
|
}
|