// Copyright 2016 The Rust Project Developers. See the COPYRIGHT // file at the top-level directory of this distribution and at // http://rust-lang.org/COPYRIGHT. // // Licensed under the Apache License, Version 2.0 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. // no-prefer-dynamic #![crate_type = "rustc-macro"] #![feature(rustc_macro)] #![feature(rustc_macro_lib)] extern crate rustc_macro; use rustc_macro::TokenStream; #[rustc_macro_derive(A)] pub fn derive(input: TokenStream) -> TokenStream { let input = input.to_string(); assert!(input.contains("struct A;")); assert!(input.contains("#[derive(Debug, PartialEq, Eq, Copy, Clone)]")); "#[derive(Debug, PartialEq, Eq, Copy, Clone)] struct A;".parse().unwrap() }