mcs/class/corlib/System.Reflection/MonoMethod.cs

   1 //
   2 // System.Reflection/MonoMethod.cs
   3 // The class used to represent methods from the mono runtime.
   4 //
   5 // Author:
   6 //   Paolo Molaro (lupus@ximian.com)
   7 //
   8 // (C) 2001 Ximian, Inc.  http://www.ximian.com
   9 //
  10
  11 //
  12 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  13 //
  14 // Permission is hereby granted, free of charge, to any person obtaining
  15 // a copy of this software and associated documentation files (the
  16 // "Software"), to deal in the Software without restriction, including
  17 // without limitation the rights to use, copy, modify, merge, publish,
  18 // distribute, sublicense, and/or sell copies of the Software, and to
  19 // permit persons to whom the Software is furnished to do so, subject to
  20 // the following conditions:
  21 //
  22 // The above copyright notice and this permission notice shall be
  23 // included in all copies or substantial portions of the Software.
  24 //
  25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  32 //
  33
  34 using System;
  35 using System.Globalization;
  36 using System.Runtime.CompilerServices;
  37 using System.Runtime.InteropServices;
  38 using System.Runtime.Serialization;
  39
  40 namespace System.Reflection {
  41
  42         internal struct MonoMethodInfo
  43         {
  44                 internal Type parent;
  45                 internal Type ret;
  46                 internal MethodAttributes attrs;
  47                 internal MethodImplAttributes iattrs;
  48                 internal CallingConventions callconv;
  49
  50                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  51                 internal static extern void get_method_info (IntPtr handle, out MonoMethodInfo info);
  52
  53                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  54                 internal static extern ParameterInfo[] get_parameter_info (IntPtr handle);
  55         };
  56
  57         /*
  58          * Note: most of this class needs to be duplicated for the contructor, since
  59          * the .NET reflection class hierarchy is so broken.
  60          */
  61         [Serializable()]
  62         internal class MonoMethod : MethodInfo, ISerializable\r
  63         {
  64                 internal IntPtr mhandle;
  65                 string name;
  66                 Type reftype;
  67
  68                 internal MonoMethod () {
  69                 }
  70
  71                 internal MonoMethod (RuntimeMethodHandle mhandle) {
  72                         this.mhandle = mhandle.Value;
  73                 }
  74
  75                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  76                 internal static extern MonoMethod get_base_definition (MonoMethod method);
  77
  78                 public override MethodInfo GetBaseDefinition ()
  79                 {
  80                         return get_base_definition (this);
  81                 }
  82
  83                 public override Type ReturnType {
  84                         get {
  85                                 MonoMethodInfo info;
  86                                 MonoMethodInfo.get_method_info (mhandle, out info);
  87                                 return info.ret;
  88                         }
  89                 }
  90                 public override ICustomAttributeProvider ReturnTypeCustomAttributes {
  91                         get {
  92                                 return new ParameterInfo (ReturnType, this);
  93                         }
  94                 }
  95
  96                 public override MethodImplAttributes GetMethodImplementationFlags() {
  97                         MonoMethodInfo info;
  98                         MonoMethodInfo.get_method_info (mhandle, out info);
  99                         return info.iattrs;
 100                 }
 101
 102                 public override ParameterInfo[] GetParameters() {
 103                         return MonoMethodInfo.get_parameter_info (mhandle);
 104                 }
 105
 106                 /*
 107                  * InternalInvoke() receives the parameters corretcly converted by the binder
 108                  * to match the types of the method signature.
 109                  */
 110                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 111                 internal extern Object InternalInvoke (Object obj, Object[] parameters);
 112
 113                 public override Object Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) {
 114                         if (binder == null)
 115                                 binder = Binder.DefaultBinder;
 116                         ParameterInfo[] pinfo = GetParameters ();
 117                         if (!Binder.ConvertArgs (binder, parameters, pinfo, culture))
 118                                 throw new ArgumentException ("parameters");
 119                         try {
 120                                 return InternalInvoke (obj, parameters);
 121                         } catch (TargetException) {
 122                                 throw;
 123                         } catch (Exception e) {
 124                                 throw new TargetInvocationException (e);
 125                         }
 126                 }
 127
 128                 public override RuntimeMethodHandle MethodHandle {
 129                         get {return new RuntimeMethodHandle (mhandle);}
 130                 }
 131                 public override MethodAttributes Attributes {
 132                         get {
 133                                 MonoMethodInfo info;
 134                                 MonoMethodInfo.get_method_info (mhandle, out info);
 135                                 return info.attrs;
 136                         }
 137                 }
 138
 139                 public override CallingConventions CallingConvention {
 140                         get {
 141                                 MonoMethodInfo info;
 142                                 MonoMethodInfo.get_method_info (mhandle, out info);
 143                                 return info.callconv;
 144                         }
 145                 }
 146
 147                 public override Type ReflectedType {
 148                         get {
 149                                 return reftype;
 150                         }
 151                 }
 152                 public override Type DeclaringType {
 153                         get {
 154                                 MonoMethodInfo info;
 155                                 MonoMethodInfo.get_method_info (mhandle, out info);
 156                                 return info.parent;
 157                         }
 158                 }
 159                 public override string Name {
 160                         get {
 161                                 return name;
 162                         }
 163                 }
 164
 165                 public override bool IsDefined (Type attributeType, bool inherit) {
 166                         return MonoCustomAttrs.IsDefined (this, attributeType, inherit);
 167                 }
 168
 169                 public override object[] GetCustomAttributes( bool inherit) {
 170                         return MonoCustomAttrs.GetCustomAttributes (this, inherit);
 171                 }
 172                 public override object[] GetCustomAttributes( Type attributeType, bool inherit) {
 173                         return MonoCustomAttrs.GetCustomAttributes (this, attributeType, inherit);
 174                 }
 175
 176                 public override string ToString () {
 177                         string parms = "";
 178                         ParameterInfo[] p = GetParameters ();
 179                         for (int i = 0; i < p.Length; ++i) {
 180                                 if (i > 0)
 181                                         parms = parms + ", ";
 182                                 Type pt = p[i].ParameterType;
 183                                 if (pt.IsClass && pt.Namespace != "")
 184                                         parms = parms + pt.Namespace + "." + pt.Name;
 185                                 else
 186                                         parms = parms + pt.Name;
 187                         }
 188                         if (ReturnType.IsClass && ReturnType.Namespace != "")
 189                                 return ReturnType.Namespace + "." + ReturnType.Name + " " + Name + "(" + parms + ")";
 190                         string generic = "";
 191 #if NET_2_0 || BOOTSTRAP_NET_2_0
 192                         if (HasGenericParameters) {
 193                                 Type[] gen_params = GetGenericArguments ();
 194                                 generic = "[";
 195                                 for (int j = 0; j < gen_params.Length; j++) {
 196                                         if (j > 0)
 197                                                 generic += ",";
 198                                         generic += gen_params [j].Name;
 199                                 }
 200                                 generic += "]";
 201                         }
 202 #endif
 203                         return ReturnType.Name + " " + Name + generic + "(" + parms + ")";
 204                 }
 205
 206         \r
 207                 // ISerializable\r
 208                 public void GetObjectData(SerializationInfo info, StreamingContext context) \r
 209                 {\r
 210                         ReflectionSerializationHolder.Serialize ( info, Name, ReflectedType, ToString(), MemberTypes.Method);\r
 211                 }\r
 212
 213 #if NET_2_0 || BOOTSTRAP_NET_2_0
 214                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 215                 public override extern MethodInfo BindGenericParameters (Type [] types);
 216
 217                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 218                 public override extern Type [] GetGenericArguments ();
 219
 220                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 221                 extern MethodInfo GetGenericMethodDefinition_impl ();
 222
 223                 public override MethodInfo GetGenericMethodDefinition ()
 224                 {
 225                         MethodInfo res = GetGenericMethodDefinition_impl ();
 226                         if (res == null)
 227                                 throw new InvalidOperationException ();
 228
 229                         return res;
 230                 }
 231
 232                 public override extern bool Mono_IsInflatedMethod {
 233                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
 234                         get;
 235                 }
 236
 237                 public override extern bool HasGenericParameters {
 238                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
 239                         get;
 240                 }
 241
 242                 public override extern bool IsGenericMethodDefinition {
 243                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
 244                         get;
 245                 }
 246 #endif
 247         }
 248
 249         internal class MonoCMethod : ConstructorInfo, ISerializable\r
 250         {
 251                 internal IntPtr mhandle;
 252                 string name;
 253                 Type reftype;
 254
 255                 public override MethodImplAttributes GetMethodImplementationFlags() {
 256                         MonoMethodInfo info;
 257                         MonoMethodInfo.get_method_info (mhandle, out info);
 258                         return info.iattrs;
 259                 }
 260
 261                 public override ParameterInfo[] GetParameters() {
 262                         return MonoMethodInfo.get_parameter_info (mhandle);
 263                 }
 264
 265                 /*
 266                  * InternalInvoke() receives the parameters corretcly converted by the binder
 267                  * to match the types of the method signature.
 268                  */
 269                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 270                 internal extern Object InternalInvoke (Object obj, Object[] parameters);
 271
 272                 public override Object Invoke (Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) {
 273                         if (binder == null)
 274                                 binder = Binder.DefaultBinder;
 275                         ParameterInfo[] pinfo = GetParameters ();
 276                         if (!Binder.ConvertArgs (binder, parameters, pinfo, culture))
 277                                 throw new ArgumentException ("parameters");
 278                         try {
 279                                 return InternalInvoke (obj, parameters);
 280                         } catch (TargetException) {
 281                                 throw;
 282                         } catch (Exception e) {
 283                                 throw new TargetInvocationException (e);
 284                         }
 285                 }
 286
 287                 public override Object Invoke (BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) {
 288                         return Invoke (null, invokeAttr, binder, parameters, culture);
 289                 }
 290
 291                 public override RuntimeMethodHandle MethodHandle {
 292                         get {return new RuntimeMethodHandle (mhandle);}
 293                 }
 294                 public override MethodAttributes Attributes {
 295                         get {
 296                                 MonoMethodInfo info;
 297                                 MonoMethodInfo.get_method_info (mhandle, out info);
 298                                 return info.attrs;
 299                         }
 300                 }
 301
 302                 public override CallingConventions CallingConvention {
 303                         get {
 304                                 MonoMethodInfo info;
 305                                 MonoMethodInfo.get_method_info (mhandle, out info);
 306                                 return info.callconv;
 307                         }
 308                 }
 309
 310                 public override Type ReflectedType {
 311                         get {
 312                                 return reftype;
 313                         }
 314                 }
 315                 public override Type DeclaringType {
 316                         get {
 317                                 MonoMethodInfo info;
 318                                 MonoMethodInfo.get_method_info (mhandle, out info);
 319                                 return info.parent;
 320                         }
 321                 }
 322                 public override string Name {
 323                         get {
 324                                 return name;
 325                         }
 326                 }
 327
 328                 public override bool IsDefined (Type attributeType, bool inherit) {
 329                         return MonoCustomAttrs.IsDefined (this, attributeType, inherit);
 330                 }
 331
 332                 public override object[] GetCustomAttributes( bool inherit) {
 333                         return MonoCustomAttrs.GetCustomAttributes (this, inherit);
 334                 }
 335
 336                 public override object[] GetCustomAttributes( Type attributeType, bool inherit) {
 337                         return MonoCustomAttrs.GetCustomAttributes (this, attributeType, inherit);
 338                 }
 339
 340 #if NET_2_0 || BOOTSTRAP_NET_2_0
 341                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 342                 extern MethodInfo GetGenericMethodDefinition_impl ();
 343
 344                 public override MethodInfo GetGenericMethodDefinition ()
 345                 {
 346                         MethodInfo res = GetGenericMethodDefinition_impl ();
 347                         if (res == null)
 348                                 throw new InvalidOperationException ();
 349
 350                         return res;
 351                 }
 352
 353                 public override extern bool Mono_IsInflatedMethod {
 354                         [MethodImplAttribute(MethodImplOptions.InternalCall)]
 355                         get;
 356                 }
 357
 358                 public override bool HasGenericParameters {
 359                         get {
 360                                 return false;
 361                         }
 362                 }
 363
 364                 public override bool IsGenericMethodDefinition {
 365                         get {
 366                                 return false;
 367                         }
 368                 }
 369 #endif
 370
 371                 public override string ToString () {
 372                         string parms = "";
 373                         ParameterInfo[] p = GetParameters ();
 374                         for (int i = 0; i < p.Length; ++i) {
 375                                 if (i > 0)
 376                                         parms = parms + ", ";
 377                                 parms = parms + p [i].ParameterType.Name;
 378                         }
 379                         return "Void "+Name+"("+parms+")";
 380                 }
 381 \r
 382                 // ISerializable\r
 383                 public void GetObjectData(SerializationInfo info, StreamingContext context) \r
 384                 {\r
 385                         ReflectionSerializationHolder.Serialize ( info, Name, ReflectedType, ToString(), MemberTypes.Constructor);\r
 386                 }\r
 387         }
 388 }