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