1 files changed, 27 insertions, 0 deletions
diff --git a/LibGit2Sharp/SubmoduleExtensions.cs b/LibGit2Sharp/SubmoduleExtensions.cs
new file mode 100644
index 00000000..1c77d1b0
--- /dev/null
+++ b/LibGit2Sharp/SubmoduleExtensions.cs
@@ -0,0 +1,27 @@
+namespace LibGit2Sharp
+{
+    /// <summary>
+    ///   Extensions related to submodules
+    /// </summary>
+    public static class SubmoduleExtensions
+    {
+        private const SubmoduleStatus UnmodifiedMask = ~(SubmoduleStatus.InConfig | SubmoduleStatus.InHead | SubmoduleStatus.InIndex | SubmoduleStatus.InWorkDir);
+        private const SubmoduleStatus WorkDirDirtyMask = SubmoduleStatus.WorkDirFilesIndexDirty | SubmoduleStatus.WorkDirFilesModified | SubmoduleStatus.WorkDirFilesUntracked;
+
+        /// <summary>
+        ///   The submodule is unmodified.
+        /// </summary>
+        public static bool IsUnmodified(this SubmoduleStatus @this)
+        {
+            return (@this & UnmodifiedMask) == SubmoduleStatus.Unmodified;
+        }
+
+        /// <summary>
+        ///   The submodule working directory is dirty.
+        /// </summary>
+        public static bool IsWorkingDirectoryDirty(this SubmoduleStatus @this)
+        {
+            return (@this & WorkDirDirtyMask) != SubmoduleStatus.Unmodified;
+        }
+    }
+}