tests/ui/proc-macro/macro-namespace-reserved.rs

   1 // force-host
   2 // no-prefer-dynamic
   3
   4 #![feature(decl_macro)]
   5 #![crate_type = "proc-macro"]
   6
   7 extern crate proc_macro;
   8 use proc_macro::*;
   9
  10 #[proc_macro]
  11 pub fn my_macro(input: TokenStream) -> TokenStream {
  12     input
  13 }
  14
  15 #[proc_macro_attribute]
  16 pub fn my_macro_attr(input: TokenStream, _: TokenStream) -> TokenStream {
  17     input
  18 }
  19
  20 #[proc_macro_derive(MyTrait)]
  21 pub fn my_macro_derive(input: TokenStream) -> TokenStream {
  22     input
  23 }
  24
  25 macro my_macro() {} //~ ERROR the name `my_macro` is defined multiple times
  26 macro my_macro_attr() {} //~ ERROR the name `my_macro_attr` is defined multiple times
  27 macro MyTrait() {} //~ ERROR the name `MyTrait` is defined multiple times
  28
  29 #[proc_macro_derive(SameName)]
  30 pub fn foo(input: TokenStream) -> TokenStream {
  31     input
  32 }
  33
  34 #[proc_macro]
  35 pub fn SameName(input: TokenStream) -> TokenStream {
  36 //~^ ERROR the name `SameName` is defined multiple times
  37     input
  38 }