| // 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. |
| |
| // compile-pass |
| // https://github.com/rust-lang/rust/issues/51300 |
| |
| #[derive(PartialEq, Eq, Clone, Copy)] |
| pub struct Stat { |
| pub id: u8, |
| pub index: usize, |
| } |
| |
| impl Stat { |
| pub const STUDENT_HAPPINESS: Stat = Stat{ |
| id: 0, |
| index: 0, |
| }; |
| pub const STUDENT_HUNGER: Stat = Stat{ |
| id: 0, |
| index: Self::STUDENT_HAPPINESS.index + 1, |
| }; |
| |
| } |
| |
| pub fn from_index(id: u8, index: usize) -> Option<Stat> { |
| let stat = Stat{id, index}; |
| match stat { |
| Stat::STUDENT_HAPPINESS => Some(Stat::STUDENT_HAPPINESS), |
| Stat::STUDENT_HUNGER => Some(Stat::STUDENT_HUNGER), |
| _ => None, |
| } |
| } |
| |
| fn main() { } |
