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