| // 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 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // no-prefer-dynamic |
| #![feature(proc_macro)] |
| #![crate_type = "proc-macro"] |
| |
| extern crate proc_macro; |
| |
| use proc_macro::TokenStream; |
| |
| #[proc_macro_attribute] |
| pub fn attr_with_args(args: TokenStream, input: TokenStream) -> TokenStream { |
| let args = args.to_string(); |
| |
| assert_eq!(args, r#"text = "Hello, world!""#); |
| |
| let input = input.to_string(); |
| |
| assert_eq!(input, "fn foo() { }"); |
| |
| r#" |
| fn foo() -> &'static str { "Hello, world!" } |
| "#.parse().unwrap() |
| } |
| |
| #[proc_macro_attribute] |
| pub fn identity(attr_args: TokenStream, _: TokenStream) -> TokenStream { |
| attr_args |
| } |
