Casting made easy

src/prob2/mod.rs

@@ -1,10 +1,16 @@
-#[repr(u8)]
+#[derive(PartialEq, Eq)]
 pub enum Play {
     Rock,
     Paper,
     Scissors,
 }
 
+enum ResultPlay {
+    Win,
+    Draw,
+    Loss,
+}
+
 impl Into<char> for Play {
     fn into(self) -> char {
         match self {
@@ -25,12 +31,27 @@ impl Into<i32> for Play {
     }
 }
 
-pub fn translate(letter: char) -> Option<Play> {
-    match letter {
-        'A' => Some(Play::Rock),
-        'B' => Some(Play::Paper),
-        'C' => Some(Play::Scissors),
-        _ => None,
+impl From<char> for Play {
+    fn from(letter: char) -> Self {
+        match letter {
+            'A' => Play::Rock,
+            'B' => Play::Paper,
+            'C' => Play::Scissors,
+            'X' => Play::Rock,
+            'Y' => Play::Paper,
+            'Z' => Play::Scissors,
+            _ => panic!("Only A, B, C, X, Y or Z letters are available."),
+        }
+    }
+}
+
+impl Into<i32> for ResultPlay {
+    fn into(self) -> i32 {
+        match self {
+            ResultPlay::Win => 6,
+            ResultPlay::Draw => 3,
+            ResultPlay::Loss => 0,
+        }
     }
 }