src/test/run-pass/proc-macro/auxiliary/bang-macro.rs

   1 // force-host
   2 // no-prefer-dynamic
   3
   4 #![crate_type = "proc-macro"]
   5
   6 extern crate proc_macro;
   7
   8 use proc_macro::TokenStream;
   9
  10 #[proc_macro]
  11 pub fn rewrite(input: TokenStream) -> TokenStream {
  12     let input = input.to_string();
  13
  14     assert_eq!(input, r#""Hello, world!""#);
  15
  16     r#""NOT Hello, world!""#.parse().unwrap()
  17 }