mcs/class/referencesource/mscorlib/system/security/principal/identityreference.cs

   1 // ==++==
   2 //
   3 //   Copyright (c) Microsoft Corporation.  All rights reserved.
   4 //
   5 // ==--==
   6 // <OWNER>Microsoft</OWNER>
   7 //
   8
   9 using System;
  10 using System.Security.Policy; // defines Url class
  11 using System.Globalization;
  12 using System.Diagnostics.Contracts;
  13
  14 namespace System.Security.Principal
  15 {
  16 [System.Runtime.InteropServices.ComVisible(false)]
  17     public abstract class IdentityReference
  18     {
  19         internal IdentityReference()
  20         {
  21             // exists to prevent creation user-derived classes (for now)
  22         }
  23
  24 //      public abstract string Scheme { get; }
  25
  26         public abstract string Value { get; }
  27
  28 //      public virtual Url Url
  29 //      {
  30 //          get { return new Url(""); } //
  31
  32
  33         public abstract bool IsValidTargetType( Type targetType );
  34
  35         public abstract IdentityReference Translate( Type targetType );
  36
  37         public override abstract bool Equals( object o );
  38
  39         public override abstract int GetHashCode();
  40
  41         public override abstract string ToString();
  42
  43         public static bool operator==( IdentityReference left, IdentityReference right )
  44         {
  45             object l = left;
  46             object r = right;
  47
  48             if ( l == null && r == null )
  49             {
  50                 return true;
  51             }
  52             else if ( l == null || r == null )
  53             {
  54                 return false;
  55             }
  56             else
  57             {
  58                 return left.Equals( right );
  59             }
  60         }
  61
  62         public static bool operator!=( IdentityReference left, IdentityReference right )
  63         {
  64             return !( left == right ); // invoke operator==
  65         }
  66     }
  67 }