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 #pragma warning disable 649
  70                 internal IntPtr klass;
  71                 internal IntPtr prop;
  72                 MonoPropertyInfo info;
  73                 PInfo cached;
  74 #pragma warning restore 649
  75
  76                 public override PropertyAttributes Attributes {
  77                         get {
  78                                 MonoPropertyInfo info;
  79                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.Attributes);
  80                                 return info.attrs;
  81                         }
  82                 }
  83
  84                 public override bool CanRead {
  85                         get {
  86                                 MonoPropertyInfo info;
  87                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod);
  88                                 return (info.get_method != null);
  89                         }
  90                 }
  91
  92                 public override bool CanWrite {
  93                         get {
  94                                 MonoPropertyInfo info;
  95                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.SetMethod);
  96                                 return (info.set_method != null);
  97                         }
  98                 }
  99
 100                 public override Type PropertyType {
 101                         get {
 102                                 if ((cached & (PInfo.GetMethod | PInfo.SetMethod)) != (PInfo.GetMethod | PInfo.SetMethod)) {
 103                                         MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod | PInfo.SetMethod);
 104                                         cached |= (PInfo.GetMethod | PInfo.SetMethod);
 105                                 }
 106
 107                                 if (info.get_method != null) {
 108                                         return info.get_method.ReturnType;
 109                                 } else {
 110                                         ParameterInfo[] parameters = info.set_method.GetParameters ();
 111
 112                                         return parameters [parameters.Length - 1].ParameterType;
 113                                 }
 114                         }
 115                 }
 116
 117                 public override Type ReflectedType {
 118                         get {
 119                                 MonoPropertyInfo info;
 120                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.ReflectedType);
 121                                 return info.parent;
 122                         }
 123                 }
 124
 125                 public override Type DeclaringType {
 126                         get {
 127                                 if ((cached & PInfo.DeclaringType) == 0) {
 128                                         MonoPropertyInfo.get_property_info (this, out info, PInfo.DeclaringType);
 129                                         cached |= PInfo.DeclaringType;
 130                                 }
 131                                 return info.parent;
 132                         }
 133                 }
 134
 135                 public override string Name {
 136                         get {
 137                                 if ((cached & PInfo.Name) == 0) {
 138                                         MonoPropertyInfo.get_property_info (this, out info, PInfo.Name);
 139                                         cached |= PInfo.Name;
 140                                 }
 141                                 return info.name;
 142                         }
 143                 }
 144
 145                 public override MethodInfo[] GetAccessors (bool nonPublic)
 146                 {
 147                         MonoPropertyInfo info;
 148                         int nget = 0;
 149                         int nset = 0;
 150
 151                         MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod | PInfo.SetMethod);
 152                         if (info.set_method != null && (nonPublic || info.set_method.IsPublic))
 153                                 nset = 1;
 154                         if (info.get_method != null && (nonPublic || info.get_method.IsPublic))
 155                                 nget = 1;
 156
 157                         MethodInfo[] res = new MethodInfo [nget + nset];
 158                         int n = 0;
 159                         if (nset != 0)
 160                                 res [n++] = info.set_method;
 161                         if (nget != 0)
 162                                 res [n++] = info.get_method;
 163                         return res;
 164                 }
 165
 166                 public override MethodInfo GetGetMethod (bool nonPublic)
 167                 {
 168                         if ((cached & PInfo.GetMethod) == 0) {
 169                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod);
 170                                 cached |= PInfo.GetMethod;
 171                         }
 172                         if (info.get_method != null && (nonPublic || info.get_method.IsPublic))
 173                                 return info.get_method;
 174                         else
 175                                 return null;
 176                 }
 177
 178                 public override ParameterInfo[] GetIndexParameters()
 179                 {
 180                         MonoPropertyInfo info;
 181                         MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod);
 182                         if (info.get_method != null)
 183                                 return info.get_method.GetParameters ();
 184                         return new ParameterInfo [0];
 185                 }
 186
 187                 public override MethodInfo GetSetMethod (bool nonPublic)
 188                 {
 189                         if ((cached & PInfo.SetMethod) == 0) {
 190                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.SetMethod);
 191                                 cached |= PInfo.SetMethod;
 192                         }
 193                         if (info.set_method != null && (nonPublic || info.set_method.IsPublic))
 194                                 return info.set_method;
 195                         else
 196                                 return null;
 197                 }
 198
 199                 // According to MSDN the inherit parameter is ignored here and
 200                 // the behavior always defaults to inherit = false
 201                 //
 202                 public override bool IsDefined (Type attributeType, bool inherit)
 203                 {
 204                         return MonoCustomAttrs.IsDefined (this, attributeType, false);
 205                 }
 206
 207                 public override object[] GetCustomAttributes (bool inherit)
 208                 {
 209                         return MonoCustomAttrs.GetCustomAttributes (this, false);
 210                 }
 211
 212                 public override object[] GetCustomAttributes (Type attributeType, bool inherit)
 213                 {
 214                         return MonoCustomAttrs.GetCustomAttributes (this, attributeType, false);
 215                 }
 216
 217                 public override object GetValue (object obj, BindingFlags invokeAttr, Binder binder, object[] index, CultureInfo culture)
 218                 {
 219                         object ret = null;
 220
 221                         MethodInfo method = GetGetMethod (true);
 222                         if (method == null)
 223                                 throw new ArgumentException ("Get Method not found for '" + Name + "'");
 224
 225                         try {
 226                                 if (index == null || index.Length == 0)
 227                                         ret = method.Invoke (obj, invokeAttr, binder, null, culture);
 228                                 else
 229                                         ret = method.Invoke (obj, invokeAttr, binder, index, culture);
 230                         }
 231                         catch (SecurityException se) {
 232                                 throw new TargetInvocationException (se);
 233                         }
 234
 235                         return ret;
 236                 }
 237
 238                 public override void SetValue (object obj, object value, BindingFlags invokeAttr, Binder binder, object[] index, CultureInfo culture)
 239                 {
 240                         MethodInfo method = GetSetMethod (true);
 241                         if (method == null)
 242                                 throw new ArgumentException ("Set Method not found for '" + Name + "'");
 243
 244                         object [] parms;
 245                         if (index == null || index.Length == 0)
 246                                 parms = new object [] {value};
 247                         else {
 248                                 int ilen = index.Length;
 249                                 parms = new object [ilen+ 1];
 250                                 index.CopyTo (parms, 0);
 251                                 parms [ilen] = value;
 252                         }
 253
 254                         method.Invoke (obj, invokeAttr, binder, parms, culture);
 255                 }
 256
 257                 public override string ToString () {
 258                         return PropertyType.ToString () + " " + Name;
 259                 }
 260
 261 #if NET_2_0 || BOOTSTRAP_NET_2_0
 262
 263                 public override Type[] GetOptionalCustomModifiers () {
 264                         Type[] types = MonoPropertyInfo.GetTypeModifiers (this, true);
 265                         if (types == null)
 266                                 return Type.EmptyTypes;
 267                         return types;
 268                 }
 269
 270                 public override Type[] GetRequiredCustomModifiers () {
 271                         Type[] types = MonoPropertyInfo.GetTypeModifiers (this, false);
 272                         if (types == null)
 273                                 return Type.EmptyTypes;
 274                         return types;
 275                 }
 276 #endif
 277
 278                 // ISerializable
 279                 public void GetObjectData (SerializationInfo info, StreamingContext context)
 280                 {
 281                         MemberInfoSerializationHolder.Serialize (info, Name, ReflectedType,
 282                                 ToString(), MemberTypes.Property);
 283                 }
 284         }
 285 }