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 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System.Globalization;
  33 using System.Runtime.CompilerServices;
  34 using System.Runtime.InteropServices;
  35 using System.Runtime.Serialization;
  36 using System.Security;
  37
  38 namespace System.Reflection {
  39
  40         internal struct MonoPropertyInfo {
  41                 public Type parent;
  42                 public String name;
  43                 public MethodInfo get_method;
  44                 public MethodInfo set_method;
  45                 public PropertyAttributes attrs;
  46
  47                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  48                 internal static extern void get_property_info (MonoProperty prop, out MonoPropertyInfo info,
  49                                                                PInfo req_info);
  50
  51                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
  52                 internal static extern Type[] GetTypeModifiers (MonoProperty prop, bool optional);
  53
  54         }
  55
  56         [Flags]
  57         internal enum PInfo {
  58                 Attributes = 1,
  59                 GetMethod  = 1 << 1,
  60                 SetMethod  = 1 << 2,
  61                 ReflectedType = 1 << 3,
  62                 DeclaringType = 1 << 4,
  63                 Name = 1 << 5
  64
  65         }
  66
  67         [Serializable]
  68         internal class MonoProperty : PropertyInfo, ISerializable {
  69                 internal IntPtr klass;
  70                 internal IntPtr prop;
  71                 MonoPropertyInfo info;
  72                 PInfo cached;
  73
  74                 public override PropertyAttributes Attributes {
  75                         get {
  76                                 MonoPropertyInfo info;
  77                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.Attributes);
  78                                 return info.attrs;
  79                         }
  80                 }
  81
  82                 public override bool CanRead {
  83                         get {
  84                                 MonoPropertyInfo info;
  85                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod);
  86                                 return (info.get_method != null);
  87                         }
  88                 }
  89
  90                 public override bool CanWrite {
  91                         get {
  92                                 MonoPropertyInfo info;
  93                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.SetMethod);
  94                                 return (info.set_method != null);
  95                         }
  96                 }
  97
  98                 public override Type PropertyType {
  99                         get {
 100                                 if ((cached & (PInfo.GetMethod | PInfo.SetMethod)) != (PInfo.GetMethod | PInfo.SetMethod)) {
 101                                         MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod | PInfo.SetMethod);
 102                                         cached |= (PInfo.GetMethod | PInfo.SetMethod);
 103                                 }
 104
 105                                 if (info.get_method != null) {
 106                                         return info.get_method.ReturnType;
 107                                 } else {
 108                                         ParameterInfo[] parameters = info.set_method.GetParameters ();
 109
 110                                         return parameters [parameters.Length - 1].ParameterType;
 111                                 }
 112                         }
 113                 }
 114
 115                 public override Type ReflectedType {
 116                         get {
 117                                 MonoPropertyInfo info;
 118                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.ReflectedType);
 119                                 return info.parent;
 120                         }
 121                 }
 122
 123                 public override Type DeclaringType {
 124                         get {
 125                                 if ((cached & PInfo.DeclaringType) == 0) {
 126                                         MonoPropertyInfo.get_property_info (this, out info, PInfo.DeclaringType);
 127                                         cached |= PInfo.DeclaringType;
 128                                 }
 129                                 return info.parent;
 130                         }
 131                 }
 132
 133                 public override string Name {
 134                         get {
 135                                 if ((cached & PInfo.Name) == 0) {
 136                                         MonoPropertyInfo.get_property_info (this, out info, PInfo.Name);
 137                                         cached |= PInfo.Name;
 138                                 }
 139                                 return info.name;
 140                         }
 141                 }
 142
 143                 public override MethodInfo[] GetAccessors (bool nonPublic)
 144                 {
 145                         MonoPropertyInfo info;
 146                         int nget = 0;
 147                         int nset = 0;
 148
 149                         MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod | PInfo.SetMethod);
 150                         if (info.set_method != null && (nonPublic || info.set_method.IsPublic))
 151                                 nset = 1;
 152                         if (info.get_method != null && (nonPublic || info.get_method.IsPublic))
 153                                 nget = 1;
 154
 155                         MethodInfo[] res = new MethodInfo [nget + nset];
 156                         int n = 0;
 157                         if (nset != 0)
 158                                 res [n++] = info.set_method;
 159                         if (nget != 0)
 160                                 res [n++] = info.get_method;
 161                         return res;
 162                 }
 163
 164                 public override MethodInfo GetGetMethod (bool nonPublic)
 165                 {
 166                         if ((cached & PInfo.GetMethod) == 0) {
 167                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod);
 168                                 cached |= PInfo.GetMethod;
 169                         }
 170                         if (info.get_method != null && (nonPublic || info.get_method.IsPublic))
 171                                 return info.get_method;
 172                         else
 173                                 return null;
 174                 }
 175
 176                 public override ParameterInfo[] GetIndexParameters()
 177                 {
 178                         MonoPropertyInfo info;
 179                         MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod);
 180                         if (info.get_method != null)
 181                                 return info.get_method.GetParameters ();
 182                         return new ParameterInfo [0];
 183                 }
 184
 185                 public override MethodInfo GetSetMethod (bool nonPublic)
 186                 {
 187                         if ((cached & PInfo.SetMethod) == 0) {
 188                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.SetMethod);
 189                                 cached |= PInfo.SetMethod;
 190                         }
 191                         if (info.set_method != null && (nonPublic || info.set_method.IsPublic))
 192                                 return info.set_method;
 193                         else
 194                                 return null;
 195                 }
 196
 197                 // According to MSDN the inherit parameter is ignored here and
 198                 // the behavior always defaults to inherit = false
 199                 //
 200                 public override bool IsDefined (Type attributeType, bool inherit)
 201                 {
 202                         return MonoCustomAttrs.IsDefined (this, attributeType, false);
 203                 }
 204
 205                 public override object[] GetCustomAttributes (bool inherit)
 206                 {
 207                         return MonoCustomAttrs.GetCustomAttributes (this, false);
 208                 }
 209
 210                 public override object[] GetCustomAttributes (Type attributeType, bool inherit)
 211                 {
 212                         return MonoCustomAttrs.GetCustomAttributes (this, attributeType, false);
 213                 }
 214
 215                 public override object GetValue (object obj, BindingFlags invokeAttr, Binder binder, object[] index, CultureInfo culture)
 216                 {
 217                         object ret = null;
 218
 219                         MethodInfo method = GetGetMethod (true);
 220                         if (method == null)
 221                                 throw new ArgumentException ("Get Method not found for '" + Name + "'");
 222
 223                         try {
 224                                 if (index == null || index.Length == 0)
 225                                         ret = method.Invoke (obj, invokeAttr, binder, null, culture);
 226                                 else
 227                                         ret = method.Invoke (obj, invokeAttr, binder, index, culture);
 228                         }
 229                         catch (SecurityException se) {
 230                                 throw new TargetInvocationException (se);
 231                         }
 232
 233                         return ret;
 234                 }
 235
 236                 public override void SetValue (object obj, object value, BindingFlags invokeAttr, Binder binder, object[] index, CultureInfo culture)
 237                 {
 238                         MethodInfo method = GetSetMethod (true);
 239                         if (method == null)
 240                                 throw new ArgumentException ("Set Method not found for '" + Name + "'");
 241
 242                         object [] parms;
 243                         if (index == null || index.Length == 0)
 244                                 parms = new object [] {value};
 245                         else {
 246                                 int ilen = index.Length;
 247                                 parms = new object [ilen+ 1];
 248                                 index.CopyTo (parms, 0);
 249                                 parms [ilen] = value;
 250                         }
 251
 252                         method.Invoke (obj, invokeAttr, binder, parms, culture);
 253                 }
 254
 255                 public override string ToString () {
 256                         return PropertyType.ToString () + " " + Name;
 257                 }
 258
 259 #if NET_2_0 || BOOTSTRAP_NET_2_0
 260
 261                 public override Type[] GetOptionalCustomModifiers () {
 262                         Type[] types = MonoPropertyInfo.GetTypeModifiers (this, true);
 263                         if (types == null)
 264                                 return Type.EmptyTypes;
 265                         return types;
 266                 }
 267
 268                 public override Type[] GetRequiredCustomModifiers () {
 269                         Type[] types = MonoPropertyInfo.GetTypeModifiers (this, false);
 270                         if (types == null)
 271                                 return Type.EmptyTypes;
 272                         return types;
 273                 }
 274 #endif
 275
 276                 // ISerializable
 277                 public void GetObjectData (SerializationInfo info, StreamingContext context)
 278                 {
 279                         MemberInfoSerializationHolder.Serialize (info, Name, ReflectedType,
 280                                 ToString(), MemberTypes.Property);
 281                 }
 282         }
 283 }