src/test/run-pass-fulldeps/proc-macro/auxiliary/derive-same-struct.rs

   1 // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 // no-prefer-dynamic
  12 // compile-flags:--crate-type proc-macro
  13
  14 #![feature(proc_macro)]
  15 #![feature(proc_macro_lib)]
  16
  17 extern crate proc_macro;
  18
  19 use proc_macro::TokenStream;
  20
  21 #[proc_macro_derive(AToB)]
  22 pub fn derive1(input: TokenStream) -> TokenStream {
  23     println!("input1: {:?}", input.to_string());
  24     assert_eq!(input.to_string(), "#[derive(BToC)]\nstruct A;\n");
  25     "#[derive(BToC)] struct B;".parse().unwrap()
  26 }
  27
  28 #[proc_macro_derive(BToC)]
  29 pub fn derive2(input: TokenStream) -> TokenStream {
  30     assert_eq!(input.to_string(), "struct B;\n");
  31     "struct C;".parse().unwrap()
  32 }