Added Extensions.cs with static methods

Extensions.cs

@@ -0,0 +1,44 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace processor
+{
+    internal static class Extensions
+    {
+        internal static string RemoveComment(string text)
+        {
+            int idx = text.LastIndexOf("#");
+            return idx > 0 ? text.Substring(0, idx) : "";
+        }
+
+        /// <summary>
+        /// Removes leading 0x prefix in hexadecimal instructions, only returning 4 char part
+        /// </summary>
+        /// <param name="text"></param>
+        /// <returns></returns>
+        internal static string RemoveLeading(string text)
+        {
+            if (text.Contains("0x")) return text.Remove(0, 2);
+            MessageBox.Show("Error while parsing code:\nHexadecimal instruction codes must start with \"0x\"!", "Vole Language Parser");
+            return "";
+        }
+
+        public static IEnumerable<string> Split2(this string text)
+        {
+            for (int i = 0; i < text.Length; i += 2)
+                yield return text.Substring(i, Math.Min(2, text.Length - i));
+        }
+
+        internal static string ToBin(this int value) => Convert.ToString(value, 2).PadLeft(8, '0');
+
+        internal static string ToHex(this int value) => Convert.ToString(value, 16);
+
+        internal static string ToHex2(this int value) => value.ToHex().PadLeft(2, '0');
+
+        internal static int Hex2Int(this string value) => Convert.ToInt32(value, 8);
+    }
+}