Split Extensions into multiple files

Extensions.NewExecutable.cs

@@ -0,0 +1,60 @@
+using SabreTools.Models.NewExecutable;
+
+namespace SabreTools.Serialization
+{
+    public static partial class Extensions
+    {
+        /// <summary>
+        /// Determine if a resource type information entry is an integer or offset
+        /// </summary>
+        /// <param name="entry">Resource type information entry to check</param>
+        /// <returns>True if the entry is an integer type, false if an offset, null on error</returns>
+        public static bool? IsIntegerType(this ResourceTypeInformationEntry entry)
+        {
+            // We can't do anything with an invalid entry
+            if (entry == null)
+                return null;
+
+            // If the highest order bit is set, it's an integer type
+            return (entry.TypeID & 0x8000) != 0;
+        }
+
+        /// <summary>
+        /// Determine if a resource type resource entry is an integer or offset
+        /// </summary>
+        /// <param name="entry">Resource type resource entry to check</param>
+        /// <returns>True if the entry is an integer type, false if an offset, null on error</returns>
+        public static bool? IsIntegerType(this ResourceTypeResourceEntry entry)
+        {
+            // We can't do anything with an invalid entry
+            if (entry == null)
+                return null;
+
+            // If the highest order bit is set, it's an integer type
+            return (entry.ResourceID & 0x8000) != 0;
+        }
+
+        /// <summary>
+        /// Get the segment entry type for an entry table bundle
+        /// </summary>
+        /// <param name="entry">Entry table bundle to check</param>
+        /// <returns>SegmentEntryType corresponding to the type</returns>
+        public static SegmentEntryType GetEntryType(this EntryTableBundle entry)
+        {
+            // We can't do anything with an invalid entry
+            if (entry == null)
+                return SegmentEntryType.Unused;
+
+            // Determine the entry type based on segment indicator
+            if (entry.SegmentIndicator == 0x00)
+                return SegmentEntryType.Unused;
+            else if (entry.SegmentIndicator >= 0x01 && entry.SegmentIndicator <= 0xFE)
+                return SegmentEntryType.FixedSegment;
+            else if (entry.SegmentIndicator == 0xFF)
+                return SegmentEntryType.MoveableSegment;
+
+            // We should never get here
+            return SegmentEntryType.Unused;
+        }
+    }
+}