add methods to Rover

src/main.rs

@@ -20,15 +20,6 @@ mod rover {
 	}
     }
 
-    fn next_direction(direction : Facing) -> Facing {
-	match direction {
-	    Facing::N => Facing::W,
-	    Facing::W => Facing::S,
-	    Facing::S => Facing::E,
-	    Facing::E => Facing::N,
-	}
-    }
-
     impl Rover {
 	pub fn forward(&self) -> Rover {
 	    let Rover(lon, lat, direction) = self;
@@ -42,112 +33,119 @@ mod rover {
 	    Rover(lon - xoff, lat - yoff, *direction)
 	}
 
-	pub fn rotate(&self, rotation: Rotation) -> Rover {
-	    let Rover(lon, lat, direction) = self;
-	    let new_direction = match rotation {
-		Rotation::Left => {
-		    next_direction(*direction)
-		},
-		Rotation::Right => {
-		    next_direction(
-			next_direction(
-			    next_direction(*direction)
-			)
-		    )
-		}
-	    };
-	    Rover(*lon, *lat, new_direction)
-	}
+	// fn next_direction(direction : Facing) -> Facing {
+	//     match direction {
+	// 	Facing::N => Facing::W,
+	// 	Facing::W => Facing::S,
+	// 	Facing::S => Facing::E,
+	// 	Facing::E => Facing::N,
+	//     }
+	// }
+
+	// pub fn rotate((lon, lat, direction) : &Rover, rotation: Rotation) -> Rover {
+	//     match rotation {
+	// 	Rotation::Left => {
+	// 	    let new_d = next_direction(*direction);
+	// 	    (*lon, *lat, new_d)
+	// 	},
+	// 	Rotation::Right => {
+	// 	    let new_d = next_direction(*direction);
+	// 	    let new_d = next_direction(new_d);
+	// 	    let new_d = next_direction(new_d);
+	// 	    (*lon, *lat, new_d)
+	// 	}
+	//     }
+	// }
     }
 }
 
 
-mod driver {
-    use super::rover;
+// mod driver {
+//     use super::rover;
 
-    fn perform_command(command: &str, rover: &rover::Rover) -> rover::Rover {
-	match command {
-	    "f" => rover.forward(),
-	    "b" => rover.backward(),
-	    "l" => rover.rotate(rover::Rotation::Left),
-	    "r" => rover.rotate(rover::Rotation::Right),
-	    _ => rover.clone()
-	}
-    }
+//     fn perform_command(command: &str, rover: &rover::Rover) -> rover::Rover {
+// 	match command {
+// 	    "f" => rover::forward(&rover),
+// 	    "b" => rover::backward(&rover),
+// 	    "l" => rover::rotate(&rover, rover::Rotation::Left),
+// 	    "r" => rover::rotate(&rover, rover::Rotation::Right),
+// 	    _ => rover.clone()
+// 	}
+//     }
 
-    pub fn execute(rover: &rover::Rover, commands: &str) -> rover::Rover {
-	if commands.is_empty() {
-	    rover.clone()
-	} else {
-	    let (now, later) = commands.split_at(1);
-	    execute(&perform_command(now, rover), later)
-	}
-    }
-}
+//     pub fn execute(rover: &rover::Rover, commands: &str) -> rover::Rover {
+// 	if commands.is_empty() {
+// 	    rover.clone()
+// 	} else {
+// 	    let (now, later) = commands.split_at(1);
+// 	    execute(&perform_command(now, rover), later)
+// 	}
+//     }
+// }
 
 #[cfg(test)]
 mod tests {
-    use super::driver;
-    use super::rover::{Rover, Facing,Rotation};
+    use super::*;
 
     #[test]
     fn move_north() {
-	let r = Rover(1, 1, Facing::N);
+	let r = rover::Rover(1, 1, rover::Facing::N);
 	assert_eq!(r.forward(),
-		    Rover(1, 0, Facing::N));
+		   rover::Rover(1, 0, rover::Facing::N));
 
-	let r =  Rover(1, 3, Facing::N);
+	let r = rover::Rover(1, 3, rover::Facing::N);
 	assert_eq!(r.forward(),
-		   Rover(1, 2, Facing::N));
+		   rover::Rover(1, 2, rover::Facing::N));
     }
 
-    #[test]
-    fn move_south() {
-	let r = Rover(1, 1, Facing::S);
-	assert_eq!(r.forward(),
-		   Rover(1, 2, Facing::S));
-    }
+    // #[test]
+    // fn move_south() {
+    // 	let r = (1 as i32, 1 as i32, rover::Facing::S);
+    // 	assert_eq!(rover::forward(&r),
+    // 		   (1 as i32, 2 as i32, rover::Facing::S));
+    // }
 
-    #[test]
-    fn move_west() {
-	let r = Rover(1, 1, Facing::W);
-	assert_eq!(r.forward(),
-		   Rover(0, 1, Facing::W));
-    }
+    // #[test]
+    // fn move_west() {
+    // 	let r = (1 as i32, 1 as i32, rover::Facing::W);
+    // 	assert_eq!(rover::forward(&r),
+    // 		   (0 as i32, 1 as i32, rover::Facing::W));
+    // }
 
-    #[test]
-    fn move_east() {
-	let r = Rover(1, 1, Facing::E);
-	assert_eq!(r.forward(),
-		   Rover(2, 1, Facing::E));
-    }
+    // #[test]
+    // fn move_east() {
+    // 	let r = (1 as i32, 1 as i32, rover::Facing::E);
+    // 	assert_eq!(rover::forward(&r),
+    // 		   (2 as i32, 1 as i32, rover::Facing::E));
+    // }
 
     #[test]
     fn move_backward() {
-	let r = Rover(1, 1, Facing::E);
+	let r = rover::Rover(1 as i32, 1 as i32, rover::Facing::E);
 	let r2 = r.forward();
 	assert_eq!(r2.backward(), r);
     }
 
-    #[test]
-    fn spin_left() {
-	let r = Rover(1, 1, Facing::E);
-	match r.rotate(Rotation::Left) {
-	    Rover(_, _, facing) => assert_eq!(facing, Facing::N)
-	}
-    }
-    #[test]
-    fn spin_right() {
-	let r = Rover(1, 1, Facing::S);
-	match r.rotate(Rotation::Right) {
-	    Rover(_, _, facing) => assert_eq!(facing, Facing::W)
-	}
-    }
+    // #[test]
+    // fn spin_left() {
+    // 	let r = (1 as i32, 1 as i32, rover::Facing::E);
+    // 	match rover::rotate(&r, rover::Rotation::Left) {
+    // 	    (_, _, facing) => assert_eq!(facing, rover::Facing::N)
+    // 	}
+    // }
+    // #[test]
+    // fn spin_right() {
+    // 	let r = (1 as i32, 1 as i32, rover::Facing::S);
+    // 	match rover::rotate(&r, rover::Rotation::Right) {
+    // 	    (_, _, facing) => assert_eq!(facing, rover::Facing::W)
+    // 	}
+    // }
+
+    // #[test]
+    // fn drive() {
+    // 	let r = (1 as i32, 1 as i32, rover::Facing::S);
+    // 	assert_eq!(driver::execute(&r, "ffrf"),
+    // 		   (0 as i32, 3 as i32, rover::Facing::W));
+    // }
 
-    #[test]
-    fn drive() {
-	let r = Rover(1, 1, Facing::S);
-	assert_eq!(driver::execute(&r, "ffrf"),
-		   Rover(0, 3, Facing::W));
-    }
 }