1 files changed, 93 insertions, 0 deletions
diff --git a/mcs/class/System/System.ComponentModel.Design.Serialization/MemberRelationship.cs b/mcs/class/System/System.ComponentModel.Design.Serialization/MemberRelationship.cs
new file mode 100644
index 00000000000..008dba9f1d8
--- /dev/null
+++ b/mcs/class/System/System.ComponentModel.Design.Serialization/MemberRelationship.cs
@@ -0,0 +1,93 @@
+//
+// System.ComponentModel.Design.Serialization.MemberRelationship
+//
+// Authors:	 
+//	  Ivan N. Zlatev (contact@i-nZ.net)
+//
+// (C) 2007 Ivan N. Zlatev
+
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
+#if NET_2_0
+
+using System;
+using System.CodeDom;
+using System.ComponentModel;
+
+namespace System.ComponentModel.Design.Serialization
+{
+	public struct MemberRelationship
+	{
+
+		public static readonly MemberRelationship Empty = new MemberRelationship ();
+
+		private object _owner;
+		private MemberDescriptor _member;
+
+		public MemberRelationship (object owner, MemberDescriptor member)
+		{
+			_owner = owner;
+			_member = member;
+		}
+
+		public bool IsEmpty {
+			get { return (_owner == null); }
+		}
+
+		public object Owner {
+			get { return _owner; }
+		}
+
+		public MemberDescriptor Member {
+			get { return _member; }
+		}
+
+		public static bool operator == (MemberRelationship left, MemberRelationship right)
+		{
+			if (left.Owner == right.Owner && left.Member == right.Member)
+				return true;
+			else
+				return false;
+		}
+
+		public static bool operator != (MemberRelationship left, MemberRelationship right)
+		{
+			return !(left == right);
+		}
+
+		public override int GetHashCode ()
+		{
+			if (_owner != null && _member != null)
+				return _member.GetHashCode () ^ _owner.GetHashCode ();
+			return base.GetHashCode ();
+		}
+
+		public override bool Equals (object o)
+		{
+			if (o is MemberRelationship) {
+				return ((MemberRelationship)o) == this;
+			}
+			return false;
+		}
+	}
+}
+#endif