mcs/class/System.XML/System.Xml.Serialization/TypeMember.cs

   1
   2 //
   3 // Permission is hereby granted, free of charge, to any person obtaining
   4 // a copy of this software and associated documentation files (the
   5 // "Software"), to deal in the Software without restriction, including
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   8 // permit persons to whom the Software is furnished to do so, subject to
   9 // the following conditions:
  10 //
  11 // The above copyright notice and this permission notice shall be
  12 // included in all copies or substantial portions of the Software.
  13 //
  14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  15 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  16 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  17 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  18 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  19 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  20 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  21 //
  22 using System;
  23 using System.Collections;
  24
  25 namespace System.Xml.Serialization
  26 {
  27         /// <summary>
  28         /// TypeMember is immutable class which is used as a key in a Hashtable.
  29         /// </summary>
  30
  31         internal sealed class TypeMember
  32         {
  33                 Type type;
  34                 string member;
  35                 internal TypeMember(Type type, string member)
  36                 {
  37                         this.type = type;
  38                         this.member = member;
  39                 }
  40
  41                 public override int GetHashCode()
  42                 {
  43                         return unchecked (type.GetHashCode() + member.GetHashCode());
  44                 }
  45
  46                 public override bool Equals(object obj)
  47                 {
  48                         if(obj is TypeMember)
  49                                 return TypeMember.Equals(this,(TypeMember)obj);
  50
  51                         return false;
  52                 }
  53
  54                 public static bool Equals(TypeMember tm1, TypeMember tm2)
  55                 {
  56                         if(Object.ReferenceEquals(tm1,tm2))
  57                                 return true;
  58                         if(Object.ReferenceEquals(tm1,null) || Object.ReferenceEquals(tm2,null))
  59                                 return false;
  60                         if(tm1.type == tm2.type && tm1.member == tm2.member)
  61                                 return true;
  62                         return false;
  63                 }
  64
  65                 public static bool operator==(TypeMember tm1, TypeMember tm2)
  66                 {
  67                         return TypeMember.Equals(tm1,tm2);
  68                 }
  69
  70                 public static bool operator!=(TypeMember tm1, TypeMember tm2)
  71                 {
  72                         return !TypeMember.Equals(tm1,tm2);
  73                 }
  74
  75                 public override string ToString ()
  76                 {
  77                         return type.ToString() + " " + member;
  78                 }
  79         }
  80 }