src/test/compile-fail-fulldeps/rustc-macro/auxiliary/append-impl.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 // force-host
  12 // no-prefer-dynamic
  13
  14 #![feature(rustc_macro)]
  15 #![feature(rustc_macro_lib)]
  16 #![crate_type = "rustc-macro"]
  17
  18 extern crate rustc_macro;
  19
  20 use rustc_macro::TokenStream;
  21
  22 #[rustc_macro_derive(Append)]
  23 pub fn derive_a(input: TokenStream) -> TokenStream {
  24     let mut input = input.to_string();
  25     input.push_str("
  26         impl Append for A {
  27             fn foo(&self) {}
  28         }
  29     ");
  30     input.parse().unwrap()
  31 }