mcs/class/corlib/System.Reflection/CustomAttributeData.cs

   1 //
   2 // System.Reflection/CustomAttributeData.cs
   3 //
   4 // Author:
   5 //   Zoltan Varga (vargaz@gmail.com)
   6 //   Carlos Alberto Cortez (calberto.cortez@gmail.com)
   7 //
   8 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
   9 //
  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:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  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.
  28 //
  29
  30 #if NET_2_0
  31
  32 using System;
  33 using System.Collections.Generic;
  34 using System.Runtime.CompilerServices;
  35 using System.Runtime.InteropServices;
  36 using System.Text;
  37
  38 namespace System.Reflection {
  39
  40         [ComVisible (true)]
  41         [Serializable]
  42         public sealed class CustomAttributeData {
  43                 ConstructorInfo ctorInfo;
  44                 IList<CustomAttributeTypedArgument> ctorArgs;
  45                 IList<CustomAttributeNamedArgument> namedArgs;
  46
  47                 internal CustomAttributeData (ConstructorInfo ctorInfo, object [] ctorArgs, object [] namedArgs)
  48                 {
  49                         this.ctorInfo = ctorInfo;
  50
  51                         this.ctorArgs = Array.AsReadOnly<CustomAttributeTypedArgument>
  52                                 (ctorArgs != null ? UnboxValues<CustomAttributeTypedArgument> (ctorArgs) : new CustomAttributeTypedArgument [0]);
  53
  54                         this.namedArgs = Array.AsReadOnly<CustomAttributeNamedArgument>
  55                                 (namedArgs != null ? UnboxValues<CustomAttributeNamedArgument> (namedArgs) : new CustomAttributeNamedArgument [0]);
  56                 }
  57
  58                 [ComVisible (true)]
  59                 public ConstructorInfo Constructor {
  60                         get {
  61                                 return ctorInfo;
  62                         }
  63                 }
  64
  65                 [ComVisible (true)]
  66                 public IList<CustomAttributeTypedArgument> ConstructorArguments {
  67                         get {
  68                                 return ctorArgs;
  69                         }
  70                 }
  71
  72                 public IList<CustomAttributeNamedArgument> NamedArguments {
  73                         get {
  74                                 return namedArgs;
  75                         }
  76                 }
  77
  78                 public static IList<CustomAttributeData> GetCustomAttributes (Assembly target) {
  79                         return MonoCustomAttrs.GetCustomAttributesData (target);
  80                 }
  81
  82                 public static IList<CustomAttributeData> GetCustomAttributes (MemberInfo target) {
  83                         return MonoCustomAttrs.GetCustomAttributesData (target);
  84                 }
  85
  86                 public static IList<CustomAttributeData> GetCustomAttributes (Module target) {
  87                         return MonoCustomAttrs.GetCustomAttributesData (target);
  88                 }
  89
  90                 public static IList<CustomAttributeData> GetCustomAttributes (ParameterInfo target) {
  91                         return MonoCustomAttrs.GetCustomAttributesData (target);
  92                 }
  93
  94                 public override string ToString ()
  95                 {
  96                         StringBuilder sb = new StringBuilder ();
  97
  98                         sb.Append ("[" + ctorInfo.DeclaringType.FullName + "(");
  99                         for (int i = 0; i < ctorArgs.Count; i++) {
 100                                 sb.Append (ctorArgs [i].ToString ());
 101                                 if (i + 1 < ctorArgs.Count)
 102                                         sb.Append (", ");
 103                         }
 104
 105                         if (namedArgs.Count > 0)
 106                                 sb.Append (", ");
 107
 108                         for (int j = 0; j < namedArgs.Count; j++) {
 109                                 sb.Append (namedArgs [j].ToString ());
 110                                 if (j + 1 < namedArgs.Count)
 111                                         sb.Append (", ");
 112                         }
 113                         sb.AppendFormat (")]");
 114
 115                         return sb.ToString ();
 116                 }
 117
 118                 static T [] UnboxValues<T> (object [] values)
 119                 {
 120                         T [] retval = new T [values.Length];
 121                         for (int i = 0; i < values.Length; i++)
 122                                 retval [i] = (T) values [i];
 123
 124                         return retval;
 125                 }
 126
 127                 public override bool Equals (object obj)
 128                 {
 129                         CustomAttributeData other = obj as CustomAttributeData;
 130                         if (other == null || other.ctorInfo != ctorInfo ||
 131                             other.ctorArgs.Count != ctorArgs.Count ||
 132                             other.namedArgs.Count != namedArgs.Count)
 133                                 return false;
 134                         for (int i = 0; i < ctorArgs.Count; i++)
 135                                 if (ctorArgs [i].Equals (other.ctorArgs [i]))
 136                                         return false;
 137                         for (int i = 0; i < namedArgs.Count; i++) {
 138                                 bool matched = false;
 139                                 for (int j = 0; j < other.namedArgs.Count; j++)
 140                                         if (namedArgs [i].Equals (other.namedArgs [j])) {
 141                                                 matched = true;
 142                                                 break;
 143                                         }
 144                                 if (!matched)
 145                                         return false;
 146                         }
 147                         return true;
 148                 }
 149
 150                 public override int GetHashCode ()
 151                 {
 152                         int ret = ctorInfo.GetHashCode () << 16;
 153                         // argument order-dependent
 154                         for (int i = 0; i < ctorArgs.Count; i++)
 155                                 ret += ret ^ 7 + ctorArgs [i].GetHashCode () << (i * 4);
 156                         // argument order-independent
 157                         for (int i = 0; i < namedArgs.Count; i++)
 158                                 ret += (namedArgs [i].GetHashCode () << 5);
 159                         return ret;
 160                 }
 161         }
 162
 163 }
 164
 165 #endif
 166