You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
93 lines
2.5 KiB
93 lines
2.5 KiB
//
|
|
// Restaurant lib for demontrating rust modules.
|
|
//
|
|
// Georg Hopp <georg@steffers.org>
|
|
//
|
|
// Copyright © 2019 Georg Hopp
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
//
|
|
|
|
mod front_of_house;
|
|
|
|
fn serve_order() {}
|
|
|
|
mod back_of_house {
|
|
pub struct Breakfast {
|
|
pub toast: String,
|
|
seasonal_fruit: String,
|
|
}
|
|
|
|
impl Breakfast {
|
|
pub fn summer(toast: &str) -> Breakfast {
|
|
Breakfast {
|
|
toast: String::from(toast),
|
|
seasonal_fruit: String::from("peaches"),
|
|
}
|
|
}
|
|
}
|
|
|
|
pub enum Appetizer {
|
|
Soup,
|
|
Salad,
|
|
}
|
|
|
|
fn fix_incorrect_order() {
|
|
cook_order();
|
|
super::serve_order();
|
|
}
|
|
|
|
fn cook_order() {}
|
|
}
|
|
|
|
// Either absolute:
|
|
// use crate::front_of_house::hosting;
|
|
// or relaive:
|
|
use front_of_house::hosting;
|
|
// we can also provide new names...
|
|
use crate::front_of_house::hosting as host;
|
|
// Public definitions braught into scope with use are
|
|
// private in this scope except we use «pub use»
|
|
pub use front_of_house::hosting as pubhost;
|
|
|
|
pub fn eat_at_restaurant() {
|
|
// Absolute path
|
|
crate::front_of_house::hosting::add_to_waitlist();
|
|
|
|
// Relative path
|
|
front_of_house::hosting::add_to_waitlist();
|
|
|
|
// With use'd path
|
|
hosting::add_to_waitlist();
|
|
|
|
// With renamed used path
|
|
host::add_to_waitlist();
|
|
|
|
pubhost::add_to_waitlist();
|
|
|
|
// Order a breakfast in the summer with Rye toast
|
|
let mut meal = back_of_house::Breakfast::summer("Rye");
|
|
|
|
// Change our mind about what bread we'd like
|
|
meal.toast = String::from("Wheat");
|
|
|
|
println!("I'd like {} toast please", meal.toast);
|
|
|
|
// The next line won't compile if we uncomment it; we're not allowed
|
|
// to see or modify the seasonal fruit that comes with the meal
|
|
// meal.seasonal_fruit = String::from("blueberries");
|
|
|
|
let order1 = back_of_house::Appetizer::Soup;
|
|
let order2 = back_of_house::Appetizer::Salad;
|
|
}
|