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                 [MonoTODO]
 109                 public override MethodInfo[] GetAccessors (bool nonPublic)
 110                 {
 111                         // FIXME: check nonPublic
 112                         MonoPropertyInfo info;
 113                         int n = 0;
 114                         MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod | PInfo.SetMethod);
 115                         if (info.set_method != null)
 116                                 n++;
 117                         if (info.get_method != null)
 118                                 n++;
 119                         MethodInfo[] res = new MethodInfo [n];
 120                         n = 0;
 121                         if (info.set_method != null)
 122                                 res [n++] = info.set_method;
 123                         if (info.get_method != null)
 124                                 res [n++] = info.get_method;
 125                         return res;
 126                 }
 127
 128                 [MonoTODO]
 129                 public override MethodInfo GetGetMethod (bool nonPublic)
 130                 {
 131                         // FIXME: check nonPublic
 132                         MonoPropertyInfo info;
 133                         MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod);
 134                         return info.get_method;
 135                 }
 136
 137                 public override ParameterInfo[] GetIndexParameters()
 138                 {
 139                         MonoPropertyInfo info;
 140                         MonoPropertyInfo.get_property_info (this, out info, PInfo.GetMethod);
 141                         if (info.get_method != null)
 142                                 return info.get_method.GetParameters ();
 143                         return new ParameterInfo [0];
 144                 }
 145
 146                 public override MethodInfo GetSetMethod (bool nonPublic)
 147                 {
 148                         // FIXME: check nonPublic
 149                         MonoPropertyInfo info;
 150                         MonoPropertyInfo.get_property_info (this, out info, PInfo.SetMethod);
 151                         return info.set_method;
 152                 }
 153
 154                 public override bool IsDefined (Type attributeType, bool inherit)
 155                 {
 156                         return MonoCustomAttrs.IsDefined (this, attributeType, inherit);
 157                 }
 158
 159                 public override object[] GetCustomAttributes (bool inherit)
 160                 {
 161                         return MonoCustomAttrs.GetCustomAttributes (this, inherit);
 162                 }
 163
 164                 public override object[] GetCustomAttributes (Type attributeType, bool inherit)
 165                 {
 166                         return MonoCustomAttrs.GetCustomAttributes (this, attributeType, inherit);
 167                 }
 168
 169                 public override object GetValue (object obj, BindingFlags invokeAttr, Binder binder, object[] index, CultureInfo culture)
 170                 {
 171                         object ret = null;
 172
 173                         MethodInfo method = GetGetMethod (false);
 174                         if (method == null)
 175                                 throw new ArgumentException ("Get Method not found for '" + Name + "'");
 176
 177                         if (index == null || index.Length == 0)
 178                                 ret = method.Invoke (obj, invokeAttr, binder, null, culture);
 179                         else
 180                                 ret = method.Invoke (obj, invokeAttr, binder, index, culture);
 181
 182                         return ret;
 183                 }
 184
 185                 public override void SetValue (object obj, object value, BindingFlags invokeAttr, Binder binder, object[] index, CultureInfo culture)
 186                 {
 187                         MethodInfo method = GetSetMethod (false);
 188                         if (method == null)
 189                                 throw new ArgumentException ("Set Method not found for '" + Name + "'");
 190
 191                         object [] parms;
 192                         if (index == null || index.Length == 0)
 193                                 parms = new object [] {value};
 194                         else {
 195                                 int ilen = index.Length;
 196                                 parms = new object [ilen+ 1];
 197                                 index.CopyTo (parms, 0);
 198                                 parms [ilen] = value;
 199                         }
 200
 201                         method.Invoke (obj, invokeAttr, binder, parms, culture);
 202                 }
 203
 204                 public override string ToString () {
 205                         return PropertyType.ToString () + " " + Name;
 206                 }
 207         }
 208 }
 209