rustlings: complete 08

7 files changed, 164 insertions, 12 deletions

diff --git a/rustlings/.rustlings-state.txt b/rustlings/.rustlings-state.txt
index 493b27f..4103aed 100644
--- a/rustlings/.rustlings-state.txt
+++ b/rustlings/.rustlings-state.txt
@@ -1,6 +1,6 @@
 DON'T EDIT THIS FILE!
 
-enums1
+strings1
 
 intro1
 intro2
@@ -34,4 +34,7 @@ move_semantics4
 move_semantics5
 structs1
 structs2
-structs3
\ No newline at end of file
+structs3
+enums1
+enums2
+enums3
\ No newline at end of file
diff --git a/rustlings/exercises/08_enums/enums1.rs b/rustlings/exercises/08_enums/enums1.rs
index c0d0c30..97a5cc0 100644
--- a/rustlings/exercises/08_enums/enums1.rs
+++ b/rustlings/exercises/08_enums/enums1.rs
@@ -1,6 +1,10 @@
 #[derive(Debug)]
 enum Message {
-    // TODO: Define a few types of messages as used below.
+    Resize,
+    Move,
+    Echo,
+    ChangeColor,
+    Quit,
 }
 
 fn main() {
diff --git a/rustlings/exercises/08_enums/enums2.rs b/rustlings/exercises/08_enums/enums2.rs
index d70f639..4a2d5ac 100644
--- a/rustlings/exercises/08_enums/enums2.rs
+++ b/rustlings/exercises/08_enums/enums2.rs
@@ -6,7 +6,14 @@ struct Point {
 
 #[derive(Debug)]
 enum Message {
-    // TODO: Define the different variants used below.
+    Resize {
+        width: u64,
+        height: u64,
+    },
+    Move(Point),
+    Echo(String),
+    ChangeColor(u8, u8, u8),
+    Quit,
 }
 
 impl Message {
diff --git a/rustlings/exercises/08_enums/enums3.rs b/rustlings/exercises/08_enums/enums3.rs
index cb05f65..bf01af3 100644
--- a/rustlings/exercises/08_enums/enums3.rs
+++ b/rustlings/exercises/08_enums/enums3.rs
@@ -44,8 +44,13 @@ impl State {
     }
 
     fn process(&mut self, message: Message) {
-        // TODO: Create a match expression to process the different message
-        // variants using the methods defined above.
+        match message {
+            Message::Resize { width, height } => self.resize(width, height),
+            Message::Move(point) => self.move_position(point),
+            Message::Echo(s) => self.echo(s),
+            Message::ChangeColor(red, green, blue) => self.change_color(red, green, blue),
+            Message::Quit => self.quit(),
+        }
     }
 }
 
diff --git a/rustlings/solutions/08_enums/enums1.rs b/rustlings/solutions/08_enums/enums1.rs
index dcf2377..97a5cc0 100644
--- a/rustlings/solutions/08_enums/enums1.rs
+++ b/rustlings/solutions/08_enums/enums1.rs
@@ -1,4 +1,16 @@
+#[derive(Debug)]
+enum Message {
+    Resize,
+    Move,
+    Echo,
+    ChangeColor,
+    Quit,
+}
+
 fn main() {
-    // DON'T EDIT THIS SOLUTION FILE!
-    // It will be automatically filled after you finish the exercise.
+    println!("{:?}", Message::Resize);
+    println!("{:?}", Message::Move);
+    println!("{:?}", Message::Echo);
+    println!("{:?}", Message::ChangeColor);
+    println!("{:?}", Message::Quit);
 }
diff --git a/rustlings/solutions/08_enums/enums2.rs b/rustlings/solutions/08_enums/enums2.rs
index dcf2377..07aee26 100644
--- a/rustlings/solutions/08_enums/enums2.rs
+++ b/rustlings/solutions/08_enums/enums2.rs
@@ -1,4 +1,37 @@
+#[derive(Debug)]
+struct Point {
+    x: u64,
+    y: u64,
+}
+
+#[derive(Debug)]
+enum Message {
+    Resize { width: u64, height: u64 },
+    Move(Point),
+    Echo(String),
+    ChangeColor(u8, u8, u8),
+    Quit,
+}
+
+impl Message {
+    fn call(&self) {
+        println!("{self:?}");
+    }
+}
+
 fn main() {
-    // DON'T EDIT THIS SOLUTION FILE!
-    // It will be automatically filled after you finish the exercise.
+    let messages = [
+        Message::Resize {
+            width: 10,
+            height: 30,
+        },
+        Message::Move(Point { x: 10, y: 15 }),
+        Message::Echo(String::from("hello world")),
+        Message::ChangeColor(200, 255, 255),
+        Message::Quit,
+    ];
+
+    for message in &messages {
+        message.call();
+    }
 }
diff --git a/rustlings/solutions/08_enums/enums3.rs b/rustlings/solutions/08_enums/enums3.rs
index dcf2377..94cf250 100644
--- a/rustlings/solutions/08_enums/enums3.rs
+++ b/rustlings/solutions/08_enums/enums3.rs
@@ -1,4 +1,92 @@
+struct Point {
+    x: u64,
+    y: u64,
+}
+
+enum Message {
+    Resize { width: u64, height: u64 },
+    Move(Point),
+    Echo(String),
+    ChangeColor(u8, u8, u8),
+    Quit,
+}
+
+struct State {
+    width: u64,
+    height: u64,
+    position: Point,
+    message: String,
+    color: (u8, u8, u8),
+    quit: bool,
+}
+
+impl State {
+    fn resize(&mut self, width: u64, height: u64) {
+        self.width = width;
+        self.height = height;
+    }
+
+    fn move_position(&mut self, point: Point) {
+        self.position = point;
+    }
+
+    fn echo(&mut self, s: String) {
+        self.message = s;
+    }
+
+    fn change_color(&mut self, red: u8, green: u8, blue: u8) {
+        self.color = (red, green, blue);
+    }
+
+    fn quit(&mut self) {
+        self.quit = true;
+    }
+
+    fn process(&mut self, message: Message) {
+        match message {
+            Message::Resize { width, height } => self.resize(width, height),
+            Message::Move(point) => self.move_position(point),
+            Message::Echo(string) => self.echo(string),
+            Message::ChangeColor(red, green, blue) => self.change_color(red, green, blue),
+            Message::Quit => self.quit(),
+        }
+    }
+}
+
 fn main() {
-    // DON'T EDIT THIS SOLUTION FILE!
-    // It will be automatically filled after you finish the exercise.
+    // You can optionally experiment here.
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_match_message_call() {
+        let mut state = State {
+            width: 0,
+            height: 0,
+            position: Point { x: 0, y: 0 },
+            message: String::from("hello world"),
+            color: (0, 0, 0),
+            quit: false,
+        };
+
+        state.process(Message::Resize {
+            width: 10,
+            height: 30,
+        });
+        state.process(Message::Move(Point { x: 10, y: 15 }));
+        state.process(Message::Echo(String::from("Hello world!")));
+        state.process(Message::ChangeColor(255, 0, 255));
+        state.process(Message::Quit);
+
+        assert_eq!(state.width, 10);
+        assert_eq!(state.height, 30);
+        assert_eq!(state.position.x, 10);
+        assert_eq!(state.position.y, 15);
+        assert_eq!(state.message, "Hello world!");
+        assert_eq!(state.color, (255, 0, 255));
+        assert!(state.quit);
+    }
 }