| // Copyright 2018 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. |
| |
| // force-host |
| // no-prefer-dynamic |
| |
| #![feature(decl_macro)] |
| #![crate_type = "proc-macro"] |
| |
| extern crate proc_macro; |
| use proc_macro::*; |
| |
| #[proc_macro] |
| pub fn my_macro(input: TokenStream) -> TokenStream { |
| input |
| } |
| |
| #[proc_macro_attribute] |
| pub fn my_macro_attr(input: TokenStream, _: TokenStream) -> TokenStream { |
| input |
| } |
| |
| #[proc_macro_derive(MyTrait)] |
| pub fn my_macro_derive(input: TokenStream) -> TokenStream { |
| input |
| } |
| |
| macro my_macro() {} //~ ERROR the name `my_macro` is defined multiple times |
| macro my_macro_attr() {} //~ ERROR the name `my_macro_attr` is defined multiple times |
| macro MyTrait() {} //~ ERROR the name `MyTrait` is defined multiple times |
| |
| #[proc_macro_derive(SameName)] |
| pub fn foo(input: TokenStream) -> TokenStream { |
| input |
| } |
| |
| #[proc_macro] |
| pub fn SameName(input: TokenStream) -> TokenStream { |
| //~^ ERROR the name `SameName` is defined multiple times |
| input |
| } |