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 using System;
  13 using System.Globalization;
  14 using System.Runtime.CompilerServices;
  15 using System.Runtime.InteropServices;
  16
  17 namespace System.Reflection {
  18
  19         internal struct MonoPropertyInfo {
  20                 public Type parent;
  21                 public String name;
  22                 public MethodInfo get_method;
  23                 public MethodInfo set_method;
  24                 public PropertyAttributes attrs;
  25
  26                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  27                 internal static extern void get_property_info (MonoProperty prop, out MonoPropertyInfo info,
  28                                                                PInfo req_info);
  29         }
  30
  31         [Flags]
  32         internal enum PInfo {
  33                 Attributes = 1,
  34                 GetMethod  = 1 << 1,
  35                 SetMethod  = 1 << 2,
  36                 ReflectedType = 1 << 3,
  37                 DeclaringType = 1 << 4,
  38                 Name = 1 << 5
  39
  40         }
  41         internal class MonoProperty : PropertyInfo {
  42                 internal IntPtr klass;
  43                 internal IntPtr prop;
  44
  45                 public override PropertyAttributes Attributes {
  46                         get {
  47                                 MonoPropertyInfo info;
  48                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.Attributes);
  49                                 return info.attrs;
  50                         }
  51                 }
  52
  53                 public override bool CanRead {
  54                         get {
  55                                 MonoPropertyInfo info;
  56                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod);
  57                                 return (info.get_method != null);
  58                         }
  59                 }
  60
  61                 public override bool CanWrite {
  62                         get {
  63                                 MonoPropertyInfo info;
  64                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.SetMethod);
  65                                 return (info.set_method != null);
  66                         }
  67                 }
  68
  69                 public override Type PropertyType {
  70                         get {
  71                                 MonoPropertyInfo info;
  72                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod | PInfo.SetMethod);
  73
  74                                 if (info.get_method != null) {
  75                                         return info.get_method.ReturnType;
  76                                 } else {
  77                                         ParameterInfo[] parameters = info.set_method.GetParameters();
  78
  79                                         return parameters [parameters.Length - 1].ParameterType;
  80                                 }
  81                         }
  82                 }
  83
  84                 public override Type ReflectedType {
  85                         get {
  86                                 MonoPropertyInfo info;
  87                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.ReflectedType);
  88                                 return info.parent;
  89                         }
  90                 }
  91
  92                 public override Type DeclaringType {
  93                         get {
  94                                 MonoPropertyInfo info;
  95                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.DeclaringType);
  96                                 return info.parent;
  97                         }
  98                 }
  99
 100                 public override string Name {
 101                         get {
 102                                 MonoPropertyInfo info;
 103                                 MonoPropertyInfo.get_property_info (this, out info, PInfo.Name);
 104                                 return info.name;
 105                         }
 106                 }
 107
 108                 public override MethodInfo[] GetAccessors (bool nonPublic)
 109                 {
 110                         MonoPropertyInfo info;
 111                         int nget = 0;
 112                         int nset = 0;
 113
 114                         MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod | PInfo.SetMethod);
 115                         if (info.set_method != null && (nonPublic || info.set_method.IsPublic))
 116                                 nget = 1;
 117                         if (info.get_method != null && (nonPublic || info.get_method.IsPublic))
 118                                 nset = 1;
 119
 120                         MethodInfo[] res = new MethodInfo [nget + nset];
 121                         int n = 0;
 122                         if (nset != 0)
 123                                 res [n++] = info.set_method;
 124                         if (nget != 0)
 125                                 res [n++] = info.get_method;
 126                         return res;
 127                 }
 128
 129                 public override MethodInfo GetGetMethod (bool nonPublic)
 130                 {
 131                         MonoPropertyInfo info;
 132                         MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod);
 133                         if (info.get_method != null && (nonPublic || info.get_method.IsPublic))
 134                                 return info.get_method;
 135                         else
 136                                 return null;
 137                 }
 138
 139                 public override ParameterInfo[] GetIndexParameters()
 140                 {
 141                         MonoPropertyInfo info;
 142                         MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod);
 143                         if (info.get_method != null)
 144                                 return info.get_method.GetParameters ();
 145                         return new ParameterInfo [0];
 146                 }
 147
 148                 public override MethodInfo GetSetMethod (bool nonPublic)
 149                 {
 150                         MonoPropertyInfo info;
 151                         MonoPropertyInfo.get_property_info (this, out info, PInfo.SetMethod);
 152                         if (info.set_method != null && (nonPublic || info.set_method.IsPublic))
 153                                 return info.set_method;
 154                         else
 155                                 return null;
 156                 }
 157
 158                 public override bool IsDefined (Type attributeType, bool inherit)
 159                 {
 160                         return MonoCustomAttrs.IsDefined (this, attributeType, inherit);
 161                 }
 162
 163                 public override object[] GetCustomAttributes (bool inherit)
 164                 {
 165                         return MonoCustomAttrs.GetCustomAttributes (this, inherit);
 166                 }
 167
 168                 public override object[] GetCustomAttributes (Type attributeType, bool inherit)
 169                 {
 170                         return MonoCustomAttrs.GetCustomAttributes (this, attributeType, inherit);
 171                 }
 172
 173                 public override object GetValue (object obj, BindingFlags invokeAttr, Binder binder, object[] index, CultureInfo culture)
 174                 {
 175                         object ret = null;
 176
 177                         MethodInfo method = GetGetMethod (true);
 178                         if (method == null)
 179                                 throw new ArgumentException ("Get Method not found for '" + Name + "'");
 180
 181                         if (index == null || index.Length == 0)
 182                                 ret = method.Invoke (obj, invokeAttr, binder, null, culture);
 183                         else
 184                                 ret = method.Invoke (obj, invokeAttr, binder, index, culture);
 185
 186                         return ret;
 187                 }
 188
 189                 public override void SetValue (object obj, object value, BindingFlags invokeAttr, Binder binder, object[] index, CultureInfo culture)
 190                 {
 191                         MethodInfo method = GetSetMethod (true);
 192                         if (method == null)
 193                                 throw new ArgumentException ("Set Method not found for '" + Name + "'");
 194
 195                         object [] parms;
 196                         if (index == null || index.Length == 0)
 197                                 parms = new object [] {value};
 198                         else {
 199                                 int ilen = index.Length;
 200                                 parms = new object [ilen+ 1];
 201                                 index.CopyTo (parms, 0);
 202                                 parms [ilen] = value;
 203                         }
 204
 205                         method.Invoke (obj, invokeAttr, binder, parms, culture);
 206                 }
 207
 208                 public override string ToString () {
 209                         return PropertyType.ToString () + " " + Name;
 210                 }
 211         }
 212 }
 213