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.Security;
  36
  37 namespace System.Reflection {
  38
  39         internal struct MonoPropertyInfo {
  40                 public Type parent;
  41                 public String name;
  42                 public MethodInfo get_method;
  43                 public MethodInfo set_method;
  44                 public PropertyAttributes attrs;
  45
  46                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  47                 internal static extern void get_property_info (MonoProperty prop, out MonoPropertyInfo info,
  48                                                                PInfo req_info);
  49         }
  50
  51         [Flags]
  52         internal enum PInfo {
  53                 Attributes = 1,
  54                 GetMethod  = 1 << 1,
  55                 SetMethod  = 1 << 2,
  56                 ReflectedType = 1 << 3,
  57                 DeclaringType = 1 << 4,
  58                 Name = 1 << 5
  59
  60         }
  61         internal class MonoProperty : PropertyInfo {
  62                 internal IntPtr klass;
  63                 internal IntPtr prop;
  64
  65                 public override PropertyAttributes Attributes {
  66                         get {
  67                                 MonoPropertyInfo info;
  68                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.Attributes);
  69                                 return info.attrs;
  70                         }
  71                 }
  72
  73                 public override bool CanRead {
  74                         get {
  75                                 MonoPropertyInfo info;
  76                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod);
  77                                 return (info.get_method != null);
  78                         }
  79                 }
  80
  81                 public override bool CanWrite {
  82                         get {
  83                                 MonoPropertyInfo info;
  84                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.SetMethod);
  85                                 return (info.set_method != null);
  86                         }
  87                 }
  88
  89                 public override Type PropertyType {
  90                         get {
  91                                 MonoPropertyInfo info;
  92                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod | PInfo.SetMethod);
  93
  94                                 if (info.get_method != null) {
  95                                         return info.get_method.ReturnType;
  96                                 } else {
  97                                         ParameterInfo[] parameters = info.set_method.GetParameters();
  98
  99                                         return parameters [parameters.Length - 1].ParameterType;
 100                                 }
 101                         }
 102                 }
 103
 104                 public override Type ReflectedType {
 105                         get {
 106                                 MonoPropertyInfo info;
 107                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.ReflectedType);
 108                                 return info.parent;
 109                         }
 110                 }
 111
 112                 public override Type DeclaringType {
 113                         get {
 114                                 MonoPropertyInfo info;
 115                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.DeclaringType);
 116                                 return info.parent;
 117                         }
 118                 }
 119
 120                 public override string Name {
 121                         get {
 122                                 MonoPropertyInfo info;
 123                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.Name);
 124                                 return info.name;
 125                         }
 126                 }
 127
 128                 public override MethodInfo[] GetAccessors (bool nonPublic)
 129                 {
 130                         MonoPropertyInfo info;
 131                         int nget = 0;
 132                         int nset = 0;
 133
 134                         MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod | PInfo.SetMethod);
 135                         if (info.set_method != null && (nonPublic || info.set_method.IsPublic))
 136                                 nset = 1;
 137                         if (info.get_method != null && (nonPublic || info.get_method.IsPublic))
 138                                 nget = 1;
 139
 140                         MethodInfo[] res = new MethodInfo [nget + nset];
 141                         int n = 0;
 142                         if (nset != 0)
 143                                 res [n++] = info.set_method;
 144                         if (nget != 0)
 145                                 res [n++] = info.get_method;
 146                         return res;
 147                 }
 148
 149                 public override MethodInfo GetGetMethod (bool nonPublic)
 150                 {
 151                         MonoPropertyInfo info;
 152                         MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod);
 153                         if (info.get_method != null && (nonPublic || info.get_method.IsPublic))
 154                                 return info.get_method;
 155                         else
 156                                 return null;
 157                 }
 158
 159                 public override ParameterInfo[] GetIndexParameters()
 160                 {
 161                         MonoPropertyInfo info;
 162                         MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod);
 163                         if (info.get_method != null)
 164                                 return info.get_method.GetParameters ();
 165                         return new ParameterInfo [0];
 166                 }
 167
 168                 public override MethodInfo GetSetMethod (bool nonPublic)
 169                 {
 170                         MonoPropertyInfo info;
 171                         MonoPropertyInfo.get_property_info (this, out info, PInfo.SetMethod);
 172                         if (info.set_method != null && (nonPublic || info.set_method.IsPublic))
 173                                 return info.set_method;
 174                         else
 175                                 return null;
 176                 }
 177
 178                 public override bool IsDefined (Type attributeType, bool inherit)
 179                 {
 180                         return MonoCustomAttrs.IsDefined (this, attributeType, inherit);
 181                 }
 182
 183                 public override object[] GetCustomAttributes (bool inherit)
 184                 {
 185                         return MonoCustomAttrs.GetCustomAttributes (this, inherit);
 186                 }
 187
 188                 public override object[] GetCustomAttributes (Type attributeType, bool inherit)
 189                 {
 190                         return MonoCustomAttrs.GetCustomAttributes (this, attributeType, inherit);
 191                 }
 192
 193                 public override object GetValue (object obj, BindingFlags invokeAttr, Binder binder, object[] index, CultureInfo culture)
 194                 {
 195                         object ret = null;
 196
 197                         MethodInfo method = GetGetMethod (true);
 198                         if (method == null)
 199                                 throw new ArgumentException ("Get Method not found for '" + Name + "'");
 200
 201                         try {
 202                                 if (index == null || index.Length == 0)
 203                                         ret = method.Invoke (obj, invokeAttr, binder, null, culture);
 204                                 else
 205                                         ret = method.Invoke (obj, invokeAttr, binder, index, culture);
 206                         }
 207                         catch (SecurityException se) {
 208                                 throw new TargetInvocationException (se);
 209                         }
 210
 211                         return ret;
 212                 }
 213
 214                 public override void SetValue (object obj, object value, BindingFlags invokeAttr, Binder binder, object[] index, CultureInfo culture)
 215                 {
 216                         MethodInfo method = GetSetMethod (true);
 217                         if (method == null)
 218                                 throw new ArgumentException ("Set Method not found for '" + Name + "'");
 219
 220                         object [] parms;
 221                         if (index == null || index.Length == 0)
 222                                 parms = new object [] {value};
 223                         else {
 224                                 int ilen = index.Length;
 225                                 parms = new object [ilen+ 1];
 226                                 index.CopyTo (parms, 0);
 227                                 parms [ilen] = value;
 228                         }
 229
 230                         method.Invoke (obj, invokeAttr, binder, parms, culture);
 231                 }
 232
 233                 public override string ToString () {
 234                         return PropertyType.ToString () + " " + Name;
 235                 }
 236         }
 237 }
 238