finish enums problems.

exercises/enums/enums1.rs

@@ -2,11 +2,12 @@
 //
 // No hints this time! ;)
 
-// I AM NOT DONE
 
 #[derive(Debug)]
 enum Message {
     // TODO: define a few types of messages as used below
+    Quit, Echo, Move, ChangeColor
+
 }
 
 fn main() {

exercises/enums/enums2.rs

@@ -3,11 +3,14 @@
 // Execute `rustlings hint enums2` or use the `hint` watch subcommand for a
 // hint.
 
-// I AM NOT DONE
 
 #[derive(Debug)]
 enum Message {
     // TODO: define the different variants used below
+    Move { x: i32, y: i32 },
+    Echo(String),
+    ChangeColor(i32, i32, i32),
+    Quit,
 }
 
 impl Message {

exercises/enums/enums3.rs

@@ -5,10 +5,13 @@
 // Execute `rustlings hint enums3` or use the `hint` watch subcommand for a
 // hint.
 
-// I AM NOT DONE
 
 enum Message {
     // TODO: implement the message variant types based on their usage below
+    Move(Point),
+    ChangeColor(u8, u8, u8),
+    Echo(String),
+    Quit,
 }
 
 struct Point {
@@ -43,6 +46,19 @@ impl State {
         // variants
         // Remember: When passing a tuple as a function argument, you'll need
         // extra parentheses: fn function((t, u, p, l, e))
+
+        match message {
+            Message::Move(p) => { self.move_position(p) },
+            Message::ChangeColor(r, g, b) => {
+                self.change_color((r, g, b));
+            },
+            Message::Echo(s) => {
+                self.echo(s);
+            },
+            Message::Quit => {
+                self.quit();
+            }
+        }
     }
 }