mcs/class/corlib/System.Reflection.Emit/ConstructorBuilder.cs

   1 //
   2 // System.Reflection.Emit.ConstructorBuilder.cs
   3 //
   4 // Author:
   5 //   Paolo Molaro (lupus@ximian.com)
   6 //
   7 // (C) 2001 Ximian, Inc.  http://www.ximian.com
   8 //
   9
  10 //
  11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System;
  34 using System.Reflection;
  35 using System.Reflection.Emit;
  36 using System.Globalization;
  37 using System.Security;
  38 using System.Security.Permissions;
  39 using System.Runtime.InteropServices;
  40 using System.Diagnostics.SymbolStore;
  41
  42 namespace System.Reflection.Emit {
  43
  44         [ComVisible (true)]
  45         [ComDefaultInterface (typeof (_ConstructorBuilder))]
  46         [ClassInterface (ClassInterfaceType.None)]
  47         public sealed class ConstructorBuilder : ConstructorInfo, _ConstructorBuilder {
  48
  49 #pragma warning disable 169, 414
  50                 private RuntimeMethodHandle mhandle;
  51                 private ILGenerator ilgen;
  52                 internal Type[] parameters;
  53                 private MethodAttributes attrs;
  54                 private MethodImplAttributes iattrs;
  55                 private int table_idx;
  56                 private CallingConventions call_conv;
  57                 private TypeBuilder type;
  58                 internal ParameterBuilder[] pinfo;
  59                 private CustomAttributeBuilder[] cattrs;
  60                 private bool init_locals = true;
  61                 private Type[][] paramModReq;
  62                 private Type[][] paramModOpt;
  63                 private RefEmitPermissionSet[] permissions;
  64 #pragma warning restore 169, 414
  65
  66                 internal ConstructorBuilder (TypeBuilder tb, MethodAttributes attributes, CallingConventions callingConvention, Type[] parameterTypes, Type[][] paramModReq, Type[][] paramModOpt)
  67                 {
  68                         attrs = attributes | MethodAttributes.SpecialName | MethodAttributes.RTSpecialName;
  69                         call_conv = callingConvention;
  70                         if (parameterTypes != null) {
  71                                 for (int i = 0; i < parameterTypes.Length; ++i)
  72                                         if (parameterTypes [i] == null)
  73                                                 throw new ArgumentException ("Elements of the parameterTypes array cannot be null", "parameterTypes");
  74
  75                                 this.parameters = new Type [parameterTypes.Length];
  76                                 System.Array.Copy (parameterTypes, this.parameters, parameterTypes.Length);
  77                         }
  78                         type = tb;
  79                         this.paramModReq = paramModReq;
  80                         this.paramModOpt = paramModOpt;
  81                         table_idx = get_next_table_index (this, 0x06, true);
  82
  83                         ((ModuleBuilder) tb.Module).RegisterToken (this, GetToken ().Token);
  84                 }
  85
  86                 [MonoTODO]
  87                 public override CallingConventions CallingConvention {
  88                         get {
  89                                 return call_conv;
  90                         }
  91                 }
  92
  93                 public bool InitLocals {
  94                         get {
  95                                 return init_locals;
  96                         }
  97                         set {
  98                                 init_locals = value;
  99                         }
 100                 }
 101
 102                 internal TypeBuilder TypeBuilder {
 103                         get {
 104                                 return type;
 105                         }
 106                 }
 107
 108                 public override MethodImplAttributes GetMethodImplementationFlags ()
 109                 {
 110                         return iattrs;
 111                 }
 112
 113                 public override ParameterInfo[] GetParameters ()
 114                 {
 115                         if (!type.is_created)
 116                                 throw not_created ();
 117
 118                         return GetParametersInternal ();
 119                 }
 120
 121                 internal ParameterInfo [] GetParametersInternal ()
 122                 {
 123                         if (parameters == null)
 124                                 return new ParameterInfo [0];
 125
 126                         ParameterInfo [] retval = new ParameterInfo [parameters.Length];
 127                         for (int i = 0; i < parameters.Length; i++)
 128                                 retval [i] = new ParameterInfo (pinfo == null ? null
 129                                         : pinfo [i + 1], parameters [i], this, i + 1);
 130
 131                         return retval;
 132                 }
 133
 134                 internal override int GetParameterCount ()
 135                 {
 136                         if (parameters == null)
 137                                 return 0;
 138
 139                         return parameters.Length;
 140                 }
 141
 142                 internal override Type GetParameterType (int pos) {
 143                         return parameters [pos];
 144                 }
 145
 146                 public override Object Invoke (Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
 147                 {
 148                         throw not_supported ();
 149                 }
 150
 151                 public override object Invoke (BindingFlags invokeAttr, Binder binder, object[] parameters, CultureInfo culture)
 152                 {
 153                         throw not_supported ();
 154                 }
 155
 156                 public override RuntimeMethodHandle MethodHandle {
 157                         get {
 158                                 throw not_supported ();
 159                         }
 160                 }
 161
 162                 public override MethodAttributes Attributes {
 163                         get {
 164                                 return attrs;
 165                         }
 166                 }
 167
 168                 public override Type ReflectedType {
 169                         get {
 170                                 return type;
 171                         }
 172                 }
 173
 174                 public override Type DeclaringType {
 175                         get {
 176                                 return type;
 177                         }
 178                 }
 179
 180 #if NET_4_0
 181                 [Obsolete]
 182 #endif
 183                 public Type ReturnType {
 184                         get {
 185                                 return null;
 186                         }
 187                 }
 188
 189                 public override string Name {
 190                         get {
 191                                 return (attrs & MethodAttributes.Static) != 0 ? ConstructorInfo.TypeConstructorName : ConstructorInfo.ConstructorName;
 192                         }
 193                 }
 194
 195                 public string Signature {
 196                         get {
 197                                 return "constructor signature";
 198                         }
 199                 }
 200
 201                 public void AddDeclarativeSecurity (SecurityAction action, PermissionSet pset)
 202                 {
 203 #if !NET_2_1
 204                         if (pset == null)
 205                                 throw new ArgumentNullException ("pset");
 206                         if ((action == SecurityAction.RequestMinimum) ||
 207                                 (action == SecurityAction.RequestOptional) ||
 208                                 (action == SecurityAction.RequestRefuse))
 209                                 throw new ArgumentOutOfRangeException ("action", "Request* values are not permitted");
 210
 211                         RejectIfCreated ();
 212
 213                         if (permissions != null) {
 214                                 /* Check duplicate actions */
 215                                 foreach (RefEmitPermissionSet set in permissions)
 216                                         if (set.action == action)
 217                                                 throw new InvalidOperationException ("Multiple permission sets specified with the same SecurityAction.");
 218
 219                                 RefEmitPermissionSet[] new_array = new RefEmitPermissionSet [permissions.Length + 1];
 220                                 permissions.CopyTo (new_array, 0);
 221                                 permissions = new_array;
 222                         }
 223                         else
 224                                 permissions = new RefEmitPermissionSet [1];
 225
 226                         permissions [permissions.Length - 1] = new RefEmitPermissionSet (action, pset.ToXml ().ToString ());
 227                         attrs |= MethodAttributes.HasSecurity;
 228 #endif
 229                 }
 230
 231                 public ParameterBuilder DefineParameter (int iSequence, ParameterAttributes attributes, string strParamName)
 232                 {
 233                         if (iSequence < 1 || iSequence > GetParameterCount ())
 234                                 throw new ArgumentOutOfRangeException ("iSequence");
 235                         if (type.is_created)
 236                                 throw not_after_created ();
 237
 238                         ParameterBuilder pb = new ParameterBuilder (this, iSequence, attributes, strParamName);
 239                         if (pinfo == null)
 240                                 pinfo = new ParameterBuilder [parameters.Length + 1];
 241                         pinfo [iSequence] = pb;
 242                         return pb;
 243                 }
 244
 245                 public override bool IsDefined (Type attributeType, bool inherit)
 246                 {
 247                         throw not_supported ();
 248                 }
 249
 250                 public override object [] GetCustomAttributes (bool inherit)
 251                 {
 252                         throw not_supported ();
 253                 }
 254
 255                 public override object [] GetCustomAttributes (Type attributeType, bool inherit)
 256                 {
 257                         throw not_supported ();
 258                 }
 259
 260                 public ILGenerator GetILGenerator ()
 261                 {
 262                         return GetILGenerator (64);
 263                 }
 264
 265                 public ILGenerator GetILGenerator (int streamSize)
 266                 {
 267                         if (ilgen != null)
 268                                 return ilgen;
 269                         ilgen = new ILGenerator (type.Module, ((ModuleBuilder)type.Module).GetTokenGenerator (), streamSize);
 270                         return ilgen;
 271                 }
 272
 273                 public void SetCustomAttribute (CustomAttributeBuilder customBuilder)
 274                 {
 275                         if (customBuilder == null)
 276                                 throw new ArgumentNullException ("customBuilder");
 277
 278                         string attrname = customBuilder.Ctor.ReflectedType.FullName;
 279                         if (attrname == "System.Runtime.CompilerServices.MethodImplAttribute") {
 280                                 byte[] data = customBuilder.Data;
 281                                 int impla; // the (stupid) ctor takes a short or an int ...
 282                                 impla = (int)data [2];
 283                                 impla |= ((int)data [3]) << 8;
 284                                 SetImplementationFlags ((MethodImplAttributes)impla);
 285                                 return;
 286                         }
 287                         if (cattrs != null) {
 288                                 CustomAttributeBuilder[] new_array = new CustomAttributeBuilder [cattrs.Length + 1];
 289                                 cattrs.CopyTo (new_array, 0);
 290                                 new_array [cattrs.Length] = customBuilder;
 291                                 cattrs = new_array;
 292                         } else {
 293                                 cattrs = new CustomAttributeBuilder [1];
 294                                 cattrs [0] = customBuilder;
 295                         }
 296                 }
 297
 298                 [ComVisible (true)]
 299                 public void SetCustomAttribute (ConstructorInfo con, byte[] binaryAttribute)
 300                 {
 301                         if (con == null)
 302                                 throw new ArgumentNullException ("con");
 303                         if (binaryAttribute == null)
 304                                 throw new ArgumentNullException ("binaryAttribute");
 305
 306                         SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
 307                 }
 308
 309                 public void SetImplementationFlags (MethodImplAttributes attributes)
 310                 {
 311                         if (type.is_created)
 312                                 throw not_after_created ();
 313
 314                         iattrs = attributes;
 315                 }
 316
 317                 public Module GetModule ()
 318                 {
 319                         return type.Module;
 320                 }
 321
 322                 public MethodToken GetToken ()
 323                 {
 324                         return new MethodToken (0x06000000 | table_idx);
 325                 }
 326
 327                 [MonoTODO]
 328                 public void SetSymCustomAttribute (string name, byte[] data)
 329                 {
 330                         if (type.is_created)
 331                                 throw not_after_created ();
 332                 }
 333
 334                 public override Module Module {
 335                         get {
 336                                 return base.Module;
 337                         }
 338                 }
 339
 340                 public override string ToString ()
 341                 {
 342                         return "ConstructorBuilder ['" + type.Name + "']";
 343                 }
 344
 345                 internal void fixup ()
 346                 {
 347                         if (((attrs & (MethodAttributes.Abstract | MethodAttributes.PinvokeImpl)) == 0) && ((iattrs & (MethodImplAttributes.Runtime | MethodImplAttributes.InternalCall)) == 0)) {
 348                         if ((ilgen == null) || (ilgen.ILOffset == 0))
 349                                 throw new InvalidOperationException ("Method '" + Name + "' does not have a method body.");
 350                         }
 351                         if (ilgen != null)
 352                                 ilgen.label_fixup ();
 353                 }
 354
 355                 internal void GenerateDebugInfo (ISymbolWriter symbolWriter)
 356                 {
 357                         if (ilgen != null && ilgen.HasDebugInfo) {
 358                                 SymbolToken token = new SymbolToken (GetToken().Token);
 359                                 symbolWriter.OpenMethod (token);
 360                                 symbolWriter.SetSymAttribute (token, "__name", System.Text.Encoding.UTF8.GetBytes (Name));
 361                                 ilgen.GenerateDebugInfo (symbolWriter);
 362                                 symbolWriter.CloseMethod ();
 363                         }
 364                 }
 365
 366                 internal override int get_next_table_index (object obj, int table, bool inc)
 367                 {
 368                         return type.get_next_table_index (obj, table, inc);
 369                 }
 370
 371                 private void RejectIfCreated ()
 372                 {
 373                         if (type.is_created)
 374                                 throw new InvalidOperationException ("Type definition of the method is complete.");
 375                 }
 376
 377                 private Exception not_supported ()
 378                 {
 379                         return new NotSupportedException ("The invoked member is not supported in a dynamic module.");
 380                 }
 381
 382                 private Exception not_after_created ()
 383                 {
 384                         return new InvalidOperationException ("Unable to change after type has been created.");
 385                 }
 386
 387                 private Exception not_created ()
 388                 {
 389                         return new NotSupportedException ("The type is not yet created.");
 390                 }
 391
 392                 void _ConstructorBuilder.GetIDsOfNames ([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
 393                 {
 394                         throw new NotImplementedException ();
 395                 }
 396
 397                 void _ConstructorBuilder.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
 398                 {
 399                         throw new NotImplementedException ();
 400                 }
 401
 402                 void _ConstructorBuilder.GetTypeInfoCount (out uint pcTInfo)
 403                 {
 404                         throw new NotImplementedException ();
 405                 }
 406
 407                 void _ConstructorBuilder.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams, IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
 408                 {
 409                         throw new NotImplementedException ();
 410                 }
 411         }
 412 }