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extern crate proc_macro;
use proc_macro::TokenStream;
#[proc_macro_attribute]
pub fn attr_with_args(args: TokenStream, input: TokenStream) -> TokenStream {
let args = args.to_string();
assert_eq!(args, r#"text = "Hello, world!""#);
let input = input.to_string();
assert_eq!(input, "fn foo() {}");
r#"
fn foo() -> &'static str { "Hello, world!" }
"#.parse().unwrap()
}
#[proc_macro_attribute]
pub fn identity(attr_args: TokenStream, _: TokenStream) -> TokenStream {
attr_args
}
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