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

   1 //
   2 // System.Reflection/MonoProperty.cs
   3 // The class used to represent Properties from the mono runtime.
   4 //
   5 // Author:
   6 //   Paolo Molaro (lupus@ximian.com)
   7 //   Patrik Torstensson (patrik.torstensson@labs2.com)
   8 //
   9 // (C) 2001 Ximian, Inc.  http://www.ximian.com
  10 //
  11
  12 //
  13 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  14 //
  15 // Permission is hereby granted, free of charge, to any person obtaining
  16 // a copy of this software and associated documentation files (the
  17 // "Software"), to deal in the Software without restriction, including
  18 // without limitation the rights to use, copy, modify, merge, publish,
  19 // distribute, sublicense, and/or sell copies of the Software, and to
  20 // permit persons to whom the Software is furnished to do so, subject to
  21 // the following conditions:
  22 //
  23 // The above copyright notice and this permission notice shall be
  24 // included in all copies or substantial portions of the Software.
  25 //
  26 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  27 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  28 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  29 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  30 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  31 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  32 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  33 //
  34
  35 using System;
  36 using System.Globalization;
  37 using System.Runtime.CompilerServices;
  38 using System.Runtime.InteropServices;
  39
  40 namespace System.Reflection {
  41
  42         internal struct MonoPropertyInfo {
  43                 public Type parent;
  44                 public String name;
  45                 public MethodInfo get_method;
  46                 public MethodInfo set_method;
  47                 public PropertyAttributes attrs;
  48
  49                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  50                 internal static extern void get_property_info (MonoProperty prop, out MonoPropertyInfo info,
  51                                                                PInfo req_info);
  52         }
  53
  54         [Flags]
  55         internal enum PInfo {
  56                 Attributes = 1,
  57                 GetMethod  = 1 << 1,
  58                 SetMethod  = 1 << 2,
  59                 ReflectedType = 1 << 3,
  60                 DeclaringType = 1 << 4,
  61                 Name = 1 << 5
  62
  63         }
  64         internal class MonoProperty : PropertyInfo {
  65                 internal IntPtr klass;
  66                 internal IntPtr prop;
  67
  68                 public override PropertyAttributes Attributes {
  69                         get {
  70                                 MonoPropertyInfo info;
  71                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.Attributes);
  72                                 return info.attrs;
  73                         }
  74                 }
  75
  76                 public override bool CanRead {
  77                         get {
  78                                 MonoPropertyInfo info;
  79                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod);
  80                                 return (info.get_method != null);
  81                         }
  82                 }
  83
  84                 public override bool CanWrite {
  85                         get {
  86                                 MonoPropertyInfo info;
  87                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.SetMethod);
  88                                 return (info.set_method != null);
  89                         }
  90                 }
  91
  92                 public override Type PropertyType {
  93                         get {
  94                                 MonoPropertyInfo info;
  95                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod | PInfo.SetMethod);
  96
  97                                 if (info.get_method != null) {
  98                                         return info.get_method.ReturnType;
  99                                 } else {
 100                                         ParameterInfo[] parameters = info.set_method.GetParameters();
 101
 102                                         return parameters [parameters.Length - 1].ParameterType;
 103                                 }
 104                         }
 105                 }
 106
 107                 public override Type ReflectedType {
 108                         get {
 109                                 MonoPropertyInfo info;
 110                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.ReflectedType);
 111                                 return info.parent;
 112                         }
 113                 }
 114
 115                 public override Type DeclaringType {
 116                         get {
 117                                 MonoPropertyInfo info;
 118                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.DeclaringType);
 119                                 return info.parent;
 120                         }
 121                 }
 122
 123                 public override string Name {
 124                         get {
 125                                 MonoPropertyInfo info;
 126                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.Name);
 127                                 return info.name;
 128                         }
 129                 }
 130
 131                 public override MethodInfo[] GetAccessors (bool nonPublic)
 132                 {
 133                         MonoPropertyInfo info;
 134                         int nget = 0;
 135                         int nset = 0;
 136
 137                         MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod | PInfo.SetMethod);
 138                         if (info.set_method != null && (nonPublic || info.set_method.IsPublic))
 139                                 nset = 1;
 140                         if (info.get_method != null && (nonPublic || info.get_method.IsPublic))
 141                                 nget = 1;
 142
 143                         MethodInfo[] res = new MethodInfo [nget + nset];
 144                         int n = 0;
 145                         if (nset != 0)
 146                                 res [n++] = info.set_method;
 147                         if (nget != 0)
 148                                 res [n++] = info.get_method;
 149                         return res;
 150                 }
 151
 152                 public override MethodInfo GetGetMethod (bool nonPublic)
 153                 {
 154                         MonoPropertyInfo info;
 155                         MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod);
 156                         if (info.get_method != null && (nonPublic || info.get_method.IsPublic))
 157                                 return info.get_method;
 158                         else
 159                                 return null;
 160                 }
 161
 162                 public override ParameterInfo[] GetIndexParameters()
 163                 {
 164                         MonoPropertyInfo info;
 165                         MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod);
 166                         if (info.get_method != null)
 167                                 return info.get_method.GetParameters ();
 168                         return new ParameterInfo [0];
 169                 }
 170
 171                 public override MethodInfo GetSetMethod (bool nonPublic)
 172                 {
 173                         MonoPropertyInfo info;
 174                         MonoPropertyInfo.get_property_info (this, out info, PInfo.SetMethod);
 175                         if (info.set_method != null && (nonPublic || info.set_method.IsPublic))
 176                                 return info.set_method;
 177                         else
 178                                 return null;
 179                 }
 180
 181                 public override bool IsDefined (Type attributeType, bool inherit)
 182                 {
 183                         return MonoCustomAttrs.IsDefined (this, attributeType, inherit);
 184                 }
 185
 186                 public override object[] GetCustomAttributes (bool inherit)
 187                 {
 188                         return MonoCustomAttrs.GetCustomAttributes (this, inherit);
 189                 }
 190
 191                 public override object[] GetCustomAttributes (Type attributeType, bool inherit)
 192                 {
 193                         return MonoCustomAttrs.GetCustomAttributes (this, attributeType, inherit);
 194                 }
 195
 196                 public override object GetValue (object obj, BindingFlags invokeAttr, Binder binder, object[] index, CultureInfo culture)
 197                 {
 198                         object ret = null;
 199
 200                         MethodInfo method = GetGetMethod (true);
 201                         if (method == null)
 202                                 throw new ArgumentException ("Get Method not found for '" + Name + "'");
 203
 204                         if (index == null || index.Length == 0)
 205                                 ret = method.Invoke (obj, invokeAttr, binder, null, culture);
 206                         else
 207                                 ret = method.Invoke (obj, invokeAttr, binder, index, culture);
 208
 209                         return ret;
 210                 }
 211
 212                 public override void SetValue (object obj, object value, BindingFlags invokeAttr, Binder binder, object[] index, CultureInfo culture)
 213                 {
 214                         MethodInfo method = GetSetMethod (true);
 215                         if (method == null)
 216                                 throw new ArgumentException ("Set Method not found for '" + Name + "'");
 217
 218                         object [] parms;
 219                         if (index == null || index.Length == 0)
 220                                 parms = new object [] {value};
 221                         else {
 222                                 int ilen = index.Length;
 223                                 parms = new object [ilen+ 1];
 224                                 index.CopyTo (parms, 0);
 225                                 parms [ilen] = value;
 226                         }
 227
 228                         method.Invoke (obj, invokeAttr, binder, parms, culture);
 229                 }
 230
 231                 public override string ToString () {
 232                         return PropertyType.ToString () + " " + Name;
 233                 }
 234         }
 235 }
 236