| // Copyright 2015 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. |
| |
| // aux-build:custom_derive_plugin_attr.rs |
| // ignore-stage1 |
| |
| #![feature(plugin, rustc_attrs)] |
| #![plugin(custom_derive_plugin_attr)] |
| |
| trait TotalSum { |
| fn total_sum(&self) -> isize; |
| } |
| |
| impl TotalSum for isize { |
| fn total_sum(&self) -> isize { |
| *self |
| } |
| } |
| |
| struct Seven; |
| |
| impl TotalSum for Seven { |
| fn total_sum(&self) -> isize { |
| 7 |
| } |
| } |
| |
| #[rustc_derive_TotalSum] |
| struct Foo { |
| seven: Seven, |
| bar: Bar, |
| baz: isize, |
| #[ignore] |
| nan: NaN, |
| } |
| |
| #[rustc_derive_TotalSum] |
| struct Bar { |
| quux: isize, |
| bleh: isize, |
| #[ignore] |
| nan: NaN2 |
| } |
| |
| struct NaN; |
| |
| impl TotalSum for NaN { |
| fn total_sum(&self) -> isize { |
| panic!(); |
| } |
| } |
| |
| struct NaN2; |
| |
| pub fn main() { |
| let v = Foo { |
| seven: Seven, |
| bar: Bar { |
| quux: 9, |
| bleh: 3, |
| nan: NaN2 |
| }, |
| baz: 80, |
| nan: NaN |
| }; |
| assert_eq!(v.total_sum(), 99); |
| } |