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         [StructLayout (LayoutKind.Sequential)]
  48         public sealed class ConstructorBuilder : ConstructorInfo, _ConstructorBuilder {
  49
  50 #pragma warning disable 169, 414
  51                 private RuntimeMethodHandle mhandle;
  52                 private ILGenerator ilgen;
  53                 internal Type[] parameters;
  54                 private MethodAttributes attrs;
  55                 private MethodImplAttributes iattrs;
  56                 private int table_idx;
  57                 private CallingConventions call_conv;
  58                 private TypeBuilder type;
  59                 internal ParameterBuilder[] pinfo;
  60                 private CustomAttributeBuilder[] cattrs;
  61                 private bool init_locals = true;
  62                 private Type[][] paramModReq;
  63                 private Type[][] paramModOpt;
  64                 private RefEmitPermissionSet[] permissions;
  65 #pragma warning restore 169, 414
  66
  67                 internal ConstructorBuilder (TypeBuilder tb, MethodAttributes attributes, CallingConventions callingConvention, Type[] parameterTypes, Type[][] paramModReq, Type[][] paramModOpt)
  68                 {
  69                         attrs = attributes | MethodAttributes.SpecialName | MethodAttributes.RTSpecialName;
  70                         call_conv = callingConvention;
  71                         if (parameterTypes != null) {
  72                                 for (int i = 0; i < parameterTypes.Length; ++i)
  73                                         if (parameterTypes [i] == null)
  74                                                 throw new ArgumentException ("Elements of the parameterTypes array cannot be null", "parameterTypes");
  75
  76                                 this.parameters = new Type [parameterTypes.Length];
  77                                 System.Array.Copy (parameterTypes, this.parameters, parameterTypes.Length);
  78                         }
  79                         type = tb;
  80                         this.paramModReq = paramModReq;
  81                         this.paramModOpt = paramModOpt;
  82                         table_idx = get_next_table_index (this, 0x06, true);
  83
  84                         ((ModuleBuilder) tb.Module).RegisterToken (this, GetToken ().Token);
  85                 }
  86
  87                 [MonoTODO]
  88                 public override CallingConventions CallingConvention {
  89                         get {
  90                                 return call_conv;
  91                         }
  92                 }
  93
  94                 public bool InitLocals {
  95                         get {
  96                                 return init_locals;
  97                         }
  98                         set {
  99                                 init_locals = value;
 100                         }
 101                 }
 102
 103                 internal TypeBuilder TypeBuilder {
 104                         get {
 105                                 return type;
 106                         }
 107                 }
 108
 109                 public override MethodImplAttributes GetMethodImplementationFlags ()
 110                 {
 111                         return iattrs;
 112                 }
 113
 114                 public override ParameterInfo[] GetParameters ()
 115                 {
 116                         if (!type.is_created)
 117                                 throw not_created ();
 118
 119                         return GetParametersInternal ();
 120                 }
 121
 122                 internal ParameterInfo [] GetParametersInternal ()
 123                 {
 124                         if (parameters == null)
 125                                 return new ParameterInfo [0];
 126
 127                         ParameterInfo [] retval = new ParameterInfo [parameters.Length];
 128                         for (int i = 0; i < parameters.Length; i++)
 129                                 retval [i] = new ParameterInfo (pinfo == null ? null
 130                                         : pinfo [i + 1], parameters [i], this, i + 1);
 131
 132                         return retval;
 133                 }
 134
 135                 internal override int GetParameterCount ()
 136                 {
 137                         if (parameters == null)
 138                                 return 0;
 139
 140                         return parameters.Length;
 141                 }
 142
 143                 internal override Type GetParameterType (int pos) {
 144                         return parameters [pos];
 145                 }
 146
 147                 public override Object Invoke (Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
 148                 {
 149                         throw not_supported ();
 150                 }
 151
 152                 public override object Invoke (BindingFlags invokeAttr, Binder binder, object[] parameters, CultureInfo culture)
 153                 {
 154                         throw not_supported ();
 155                 }
 156
 157                 public override RuntimeMethodHandle MethodHandle {
 158                         get {
 159                                 throw not_supported ();
 160                         }
 161                 }
 162
 163                 public override MethodAttributes Attributes {
 164                         get {
 165                                 return attrs;
 166                         }
 167                 }
 168
 169                 public override Type ReflectedType {
 170                         get {
 171                                 return type;
 172                         }
 173                 }
 174
 175                 public override Type DeclaringType {
 176                         get {
 177                                 return type;
 178                         }
 179                 }
 180
 181 #if NET_4_0
 182                 [Obsolete]
 183 #endif
 184                 public Type ReturnType {
 185                         get {
 186                                 return null;
 187                         }
 188                 }
 189
 190                 public override string Name {
 191                         get {
 192                                 return (attrs & MethodAttributes.Static) != 0 ? ConstructorInfo.TypeConstructorName : ConstructorInfo.ConstructorName;
 193                         }
 194                 }
 195
 196                 public string Signature {
 197                         get {
 198                                 return "constructor signature";
 199                         }
 200                 }
 201
 202                 public void AddDeclarativeSecurity (SecurityAction action, PermissionSet pset)
 203                 {
 204 #if !NET_2_1
 205                         if (pset == null)
 206                                 throw new ArgumentNullException ("pset");
 207                         if ((action == SecurityAction.RequestMinimum) ||
 208                                 (action == SecurityAction.RequestOptional) ||
 209                                 (action == SecurityAction.RequestRefuse))
 210                                 throw new ArgumentOutOfRangeException ("action", "Request* values are not permitted");
 211
 212                         RejectIfCreated ();
 213
 214                         if (permissions != null) {
 215                                 /* Check duplicate actions */
 216                                 foreach (RefEmitPermissionSet set in permissions)
 217                                         if (set.action == action)
 218                                                 throw new InvalidOperationException ("Multiple permission sets specified with the same SecurityAction.");
 219
 220                                 RefEmitPermissionSet[] new_array = new RefEmitPermissionSet [permissions.Length + 1];
 221                                 permissions.CopyTo (new_array, 0);
 222                                 permissions = new_array;
 223                         }
 224                         else
 225                                 permissions = new RefEmitPermissionSet [1];
 226
 227                         permissions [permissions.Length - 1] = new RefEmitPermissionSet (action, pset.ToXml ().ToString ());
 228                         attrs |= MethodAttributes.HasSecurity;
 229 #endif
 230                 }
 231
 232                 public ParameterBuilder DefineParameter (int iSequence, ParameterAttributes attributes, string strParamName)
 233                 {
 234                         if (iSequence < 1 || iSequence > GetParameterCount ())
 235                                 throw new ArgumentOutOfRangeException ("iSequence");
 236                         if (type.is_created)
 237                                 throw not_after_created ();
 238
 239                         ParameterBuilder pb = new ParameterBuilder (this, iSequence, attributes, strParamName);
 240                         if (pinfo == null)
 241                                 pinfo = new ParameterBuilder [parameters.Length + 1];
 242                         pinfo [iSequence] = pb;
 243                         return pb;
 244                 }
 245
 246                 public override bool IsDefined (Type attributeType, bool inherit)
 247                 {
 248                         throw not_supported ();
 249                 }
 250
 251                 public override object [] GetCustomAttributes (bool inherit)
 252                 {
 253                         throw not_supported ();
 254                 }
 255
 256                 public override object [] GetCustomAttributes (Type attributeType, bool inherit)
 257                 {
 258                         throw not_supported ();
 259                 }
 260
 261                 public ILGenerator GetILGenerator ()
 262                 {
 263                         return GetILGenerator (64);
 264                 }
 265
 266                 public ILGenerator GetILGenerator (int streamSize)
 267                 {
 268                         if (ilgen != null)
 269                                 return ilgen;
 270                         ilgen = new ILGenerator (type.Module, ((ModuleBuilder)type.Module).GetTokenGenerator (), streamSize);
 271                         return ilgen;
 272                 }
 273
 274                 public void SetCustomAttribute (CustomAttributeBuilder customBuilder)
 275                 {
 276                         if (customBuilder == null)
 277                                 throw new ArgumentNullException ("customBuilder");
 278
 279                         string attrname = customBuilder.Ctor.ReflectedType.FullName;
 280                         if (attrname == "System.Runtime.CompilerServices.MethodImplAttribute") {
 281                                 byte[] data = customBuilder.Data;
 282                                 int impla; // the (stupid) ctor takes a short or an int ...
 283                                 impla = (int)data [2];
 284                                 impla |= ((int)data [3]) << 8;
 285                                 SetImplementationFlags ((MethodImplAttributes)impla);
 286                                 return;
 287                         }
 288                         if (cattrs != null) {
 289                                 CustomAttributeBuilder[] new_array = new CustomAttributeBuilder [cattrs.Length + 1];
 290                                 cattrs.CopyTo (new_array, 0);
 291                                 new_array [cattrs.Length] = customBuilder;
 292                                 cattrs = new_array;
 293                         } else {
 294                                 cattrs = new CustomAttributeBuilder [1];
 295                                 cattrs [0] = customBuilder;
 296                         }
 297                 }
 298
 299                 [ComVisible (true)]
 300                 public void SetCustomAttribute (ConstructorInfo con, byte[] binaryAttribute)
 301                 {
 302                         if (con == null)
 303                                 throw new ArgumentNullException ("con");
 304                         if (binaryAttribute == null)
 305                                 throw new ArgumentNullException ("binaryAttribute");
 306
 307                         SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
 308                 }
 309
 310                 public void SetImplementationFlags (MethodImplAttributes attributes)
 311                 {
 312                         if (type.is_created)
 313                                 throw not_after_created ();
 314
 315                         iattrs = attributes;
 316                 }
 317
 318                 public Module GetModule ()
 319                 {
 320                         return type.Module;
 321                 }
 322
 323                 public MethodToken GetToken ()
 324                 {
 325                         return new MethodToken (0x06000000 | table_idx);
 326                 }
 327
 328                 [MonoTODO]
 329                 public void SetSymCustomAttribute (string name, byte[] data)
 330                 {
 331                         if (type.is_created)
 332                                 throw not_after_created ();
 333                 }
 334
 335                 public override Module Module {
 336                         get {
 337                                 return base.Module;
 338                         }
 339                 }
 340
 341                 public override string ToString ()
 342                 {
 343                         return "ConstructorBuilder ['" + type.Name + "']";
 344                 }
 345
 346                 internal void fixup ()
 347                 {
 348                         if (((attrs & (MethodAttributes.Abstract | MethodAttributes.PinvokeImpl)) == 0) && ((iattrs & (MethodImplAttributes.Runtime | MethodImplAttributes.InternalCall)) == 0)) {
 349                         if ((ilgen == null) || (ilgen.ILOffset == 0))
 350                                 throw new InvalidOperationException ("Method '" + Name + "' does not have a method body.");
 351                         }
 352                         if (ilgen != null)
 353                                 ilgen.label_fixup ();
 354                 }
 355
 356                 internal void GenerateDebugInfo (ISymbolWriter symbolWriter)
 357                 {
 358                         if (ilgen != null && ilgen.HasDebugInfo) {
 359                                 SymbolToken token = new SymbolToken (GetToken().Token);
 360                                 symbolWriter.OpenMethod (token);
 361                                 symbolWriter.SetSymAttribute (token, "__name", System.Text.Encoding.UTF8.GetBytes (Name));
 362                                 ilgen.GenerateDebugInfo (symbolWriter);
 363                                 symbolWriter.CloseMethod ();
 364                         }
 365                 }
 366
 367                 internal override int get_next_table_index (object obj, int table, bool inc)
 368                 {
 369                         return type.get_next_table_index (obj, table, inc);
 370                 }
 371
 372                 private void RejectIfCreated ()
 373                 {
 374                         if (type.is_created)
 375                                 throw new InvalidOperationException ("Type definition of the method is complete.");
 376                 }
 377
 378                 private Exception not_supported ()
 379                 {
 380                         return new NotSupportedException ("The invoked member is not supported in a dynamic module.");
 381                 }
 382
 383                 private Exception not_after_created ()
 384                 {
 385                         return new InvalidOperationException ("Unable to change after type has been created.");
 386                 }
 387
 388                 private Exception not_created ()
 389                 {
 390                         return new NotSupportedException ("The type is not yet created.");
 391                 }
 392
 393                 void _ConstructorBuilder.GetIDsOfNames ([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
 394                 {
 395                         throw new NotImplementedException ();
 396                 }
 397
 398                 void _ConstructorBuilder.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
 399                 {
 400                         throw new NotImplementedException ();
 401                 }
 402
 403                 void _ConstructorBuilder.GetTypeInfoCount (out uint pcTInfo)
 404                 {
 405                         throw new NotImplementedException ();
 406                 }
 407
 408                 void _ConstructorBuilder.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams, IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
 409                 {
 410                         throw new NotImplementedException ();
 411                 }
 412         }
 413 }