From 2901d856627889e5a52dcf9f97d1c77032081c08 Mon Sep 17 00:00:00 2001 From: mo8it Date: Fri, 21 Jun 2024 23:18:25 +0200 Subject: enums3 solution --- solutions/08_enums/enums3.rs | 76 +++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 75 insertions(+), 1 deletion(-) (limited to 'solutions/08_enums/enums3.rs') diff --git a/solutions/08_enums/enums3.rs b/solutions/08_enums/enums3.rs index 4e18198..8baa25c 100644 --- a/solutions/08_enums/enums3.rs +++ b/solutions/08_enums/enums3.rs @@ -1 +1,75 @@ -// Solutions will be available before the stable release. Thank you for testing the beta version 🥰 +enum Message { + ChangeColor(u8, u8, u8), + Echo(String), + Move(Point), + Quit, +} + +struct Point { + x: u8, + y: u8, +} + +struct State { + color: (u8, u8, u8), + position: Point, + quit: bool, + message: String, +} + +impl State { + fn change_color(&mut self, color: (u8, u8, u8)) { + self.color = color; + } + + fn quit(&mut self) { + self.quit = true; + } + + fn echo(&mut self, s: String) { + self.message = s; + } + + fn move_position(&mut self, point: Point) { + self.position = point; + } + + fn process(&mut self, message: Message) { + match message { + Message::ChangeColor(r, g, b) => self.change_color((r, g, b)), + Message::Echo(s) => self.echo(s), + Message::Move(point) => self.move_position(point), + Message::Quit => self.quit(), + } + } +} + +fn main() { + // You can optionally experiment here. +} + +#[cfg(test)] +mod tests { + use super::*; + + #[test] + fn test_match_message_call() { + let mut state = State { + quit: false, + position: Point { x: 0, y: 0 }, + color: (0, 0, 0), + message: String::from("hello world"), + }; + + state.process(Message::ChangeColor(255, 0, 255)); + state.process(Message::Echo(String::from("Hello world!"))); + state.process(Message::Move(Point { x: 10, y: 15 })); + state.process(Message::Quit); + + assert_eq!(state.color, (255, 0, 255)); + assert_eq!(state.position.x, 10); + assert_eq!(state.position.y, 15); + assert!(state.quit); + assert_eq!(state.message, "Hello world!"); + } +} -- cgit v1.2.3