Split classes to files

77_Salvo/csharp/Extensions/IOExtensions.cs

@@ -0,0 +1,27 @@
+namespace Games.Common.IO;
+
+internal static class IOExtensions
+{
+    internal static Position ReadPosition(this IReadWrite io) => Position.Create(io.Read2Numbers(""));
+
+    internal static Position ReadValidPosition(this IReadWrite io)
+    {
+        while (true)
+        {
+            if (Position.TryCreateValid(io.Read2Numbers(""), out var position)) 
+            { 
+                return position; 
+            }
+            io.WriteLine("ILLEGAL, ENTER AGAIN.");
+        }
+    }
+
+    internal static IEnumerable<Position> ReadPositions(this IReadWrite io, string shipName, int shipSize)
+    {
+        io.WriteLine(shipName);
+        for (var i = 0; i < shipSize; i++)
+        {
+             yield return io.ReadPosition();
+        }
+    }
+}