class/corlib/System.Reflection.Emit/Label.cs

   1 //
   2 // System.Reflection.Emit/Label.cs
   3 //
   4 // Author:
   5 //   Paolo Molaro (lupus@ximian.com)
   6 //
   7 // (C) 2001 Ximian, Inc.  http://www.ximian.com
   8 //
   9
  10 //
  11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System.Runtime.InteropServices;
  34
  35 namespace System.Reflection.Emit {
  36
  37         [ComVisible (true)]
  38         [Serializable]
  39         public struct Label {
  40                 internal int label;
  41
  42                 internal Label (int val) {
  43                         label = val;
  44                 }
  45
  46                 public override bool Equals (object obj) {
  47                         bool res = obj is Label;
  48
  49                         if (res) {
  50                                 Label l = (Label)obj;
  51                                 res = (label == l.label);
  52                         }
  53
  54                         return res;
  55                 }
  56
  57                 public bool Equals (Label obj)
  58                 {
  59                         return (label == obj.label);
  60                 }
  61
  62                 public static bool operator == (Label a, Label b) {
  63                         return a.Equals (b);
  64                 }
  65
  66                 public static bool operator != (Label a, Label b) {
  67                         return !(a == b);
  68                 }
  69
  70                 public override int GetHashCode () {
  71                         return label.GetHashCode ();
  72                 }
  73         }
  74 }