2 // System.ComponentModel.Design.Serialization.MemberRelationship
5 // Ivan N. Zlatev (contact@i-nZ.net)
7 // (C) 2007 Ivan N. Zlatev
10 // Permission is hereby granted, free of charge, to any person obtaining
11 // a copy of this software and associated documentation files (the
12 // "Software"), to deal in the Software without restriction, including
13 // without limitation the rights to use, copy, modify, merge, publish,
14 // distribute, sublicense, and/or sell copies of the Software, and to
15 // permit persons to whom the Software is furnished to do so, subject to
16 // the following conditions:
18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
34 using System.ComponentModel;
36 namespace System.ComponentModel.Design.Serialization
38 public struct MemberRelationship
41 public static readonly MemberRelationship Empty = new MemberRelationship ();
43 private object _owner;
44 private MemberDescriptor _member;
46 public MemberRelationship (object owner, MemberDescriptor member)
53 get { return (_owner == null); }
57 get { return _owner; }
60 public MemberDescriptor Member {
61 get { return _member; }
64 public static bool operator == (MemberRelationship left, MemberRelationship right)
66 if (left.Owner == right.Owner && left.Member == right.Member)
72 public static bool operator != (MemberRelationship left, MemberRelationship right)
74 return !(left == right);
77 public override int GetHashCode ()
79 if (_owner != null && _member != null)
80 return _member.GetHashCode () ^ _owner.GetHashCode ();
81 return base.GetHashCode ();
84 public override bool Equals (object o)
86 if (o is MemberRelationship) {
87 return ((MemberRelationship)o) == this;