Move: bit madness

src/repr/board.rs

@@ -46,6 +46,16 @@ pub enum Winner {
     None,
 }
 
+impl Winner {
+    pub const fn raw(self) -> u8 {
+        unsafe { std::mem::transmute(self) }
+    }
+
+    pub const fn from_raw(value: u8) -> Self {
+        unsafe { std::mem::transmute(value) }
+    }
+}
+
 macro_rules! get_board {
     // Immutable static access
     ($self:expr, Piece::White) => {
@@ -539,4 +549,17 @@ mod test {
 
         assert_eq!(board.get((6, 0).into()), Some(Piece::Black), "\n{}", board);
     }
+
+    #[test]
+    fn winner_repr() {
+        assert_eq!(Winner::Player(Piece::Black).raw(), 0b00);
+        assert_eq!(Winner::Player(Piece::White).raw(), 0b01);
+        assert_eq!(Winner::Tie.raw(), 0b10);
+        assert_eq!(Winner::None.raw(), 0b11);
+
+        assert_eq!(Winner::from_raw(0b00), Winner::Player(Piece::Black));
+        assert_eq!(Winner::from_raw(0b01), Winner::Player(Piece::White));
+        assert_eq!(Winner::from_raw(0b10), Winner::Tie);
+        assert_eq!(Winner::from_raw(0b11), Winner::None);
+    }
 }