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 #if !FULL_AOT_RUNTIME
  34 using System;
  35 using System.Collections.Generic;
  36 using System.Reflection;
  37 using System.Reflection.Emit;
  38 using System.Globalization;
  39 using System.Security;
  40 using System.Security.Permissions;
  41 using System.Runtime.InteropServices;
  42 using System.Diagnostics.SymbolStore;
  43
  44 namespace System.Reflection.Emit {
  45
  46         [ComVisible (true)]
  47         [ComDefaultInterface (typeof (_ConstructorBuilder))]
  48         [ClassInterface (ClassInterfaceType.None)]
  49         [StructLayout (LayoutKind.Sequential)]
  50         public sealed class ConstructorBuilder : ConstructorInfo, _ConstructorBuilder {
  51
  52 #pragma warning disable 169, 414
  53                 private RuntimeMethodHandle mhandle;
  54                 private ILGenerator ilgen;
  55                 internal Type[] parameters;
  56                 private MethodAttributes attrs;
  57                 private MethodImplAttributes iattrs;
  58                 private int table_idx;
  59                 private CallingConventions call_conv;
  60                 private TypeBuilder type;
  61                 internal ParameterBuilder[] pinfo;
  62                 private CustomAttributeBuilder[] cattrs;
  63                 private bool init_locals = true;
  64                 private Type[][] paramModReq;
  65                 private Type[][] paramModOpt;
  66                 private RefEmitPermissionSet[] permissions;
  67 #pragma warning restore 169, 414
  68
  69                 internal ConstructorBuilder (TypeBuilder tb, MethodAttributes attributes, CallingConventions callingConvention, Type[] parameterTypes, Type[][] paramModReq, Type[][] paramModOpt)
  70                 {
  71                         attrs = attributes | MethodAttributes.SpecialName | MethodAttributes.RTSpecialName;
  72                         call_conv = callingConvention;
  73                         if (parameterTypes != null) {
  74                                 for (int i = 0; i < parameterTypes.Length; ++i)
  75                                         if (parameterTypes [i] == null)
  76                                                 throw new ArgumentException ("Elements of the parameterTypes array cannot be null", "parameterTypes");
  77
  78                                 this.parameters = new Type [parameterTypes.Length];
  79                                 System.Array.Copy (parameterTypes, this.parameters, parameterTypes.Length);
  80                         }
  81                         type = tb;
  82                         this.paramModReq = paramModReq;
  83                         this.paramModOpt = paramModOpt;
  84                         table_idx = get_next_table_index (this, 0x06, true);
  85
  86                         ((ModuleBuilder) tb.Module).RegisterToken (this, GetToken ().Token);
  87                 }
  88
  89                 [MonoTODO]
  90                 public override CallingConventions CallingConvention {
  91                         get {
  92                                 return call_conv;
  93                         }
  94                 }
  95
  96                 public bool InitLocals {
  97                         get {
  98                                 return init_locals;
  99                         }
 100                         set {
 101                                 init_locals = value;
 102                         }
 103                 }
 104
 105                 internal TypeBuilder TypeBuilder {
 106                         get {
 107                                 return type;
 108                         }
 109                 }
 110
 111                 public override MethodImplAttributes GetMethodImplementationFlags ()
 112                 {
 113                         return iattrs;
 114                 }
 115
 116                 public override ParameterInfo[] GetParameters ()
 117                 {
 118                         if (!type.is_created)
 119                                 throw not_created ();
 120
 121                         return GetParametersInternal ();
 122                 }
 123
 124                 internal override ParameterInfo [] GetParametersInternal ()
 125                 {
 126                         if (parameters == null)
 127                                 return EmptyArray<ParameterInfo>.Value;
 128
 129                         ParameterInfo [] retval = new ParameterInfo [parameters.Length];
 130                         for (int i = 0; i < parameters.Length; i++)
 131                                 retval [i] = ParameterInfo.New (pinfo == null ? null
 132                                         : pinfo [i + 1], parameters [i], this, i + 1);
 133
 134                         return retval;
 135                 }
 136
 137                 internal override int GetParametersCount ()
 138                 {
 139                         if (parameters == null)
 140                                 return 0;
 141
 142                         return parameters.Length;
 143                 }
 144
 145                 internal override Type GetParameterType (int pos) {
 146                         return parameters [pos];
 147                 }
 148
 149                 internal MethodBase RuntimeResolve () {
 150                         return type.RuntimeResolve ().GetConstructor (this);
 151                 }
 152
 153                 public override Object Invoke (Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
 154                 {
 155                         throw not_supported ();
 156                 }
 157
 158                 public override object Invoke (BindingFlags invokeAttr, Binder binder, object[] parameters, CultureInfo culture)
 159                 {
 160                         throw not_supported ();
 161                 }
 162
 163                 public override RuntimeMethodHandle MethodHandle {
 164                         get {
 165                                 throw not_supported ();
 166                         }
 167                 }
 168
 169                 public override MethodAttributes Attributes {
 170                         get {
 171                                 return attrs;
 172                         }
 173                 }
 174
 175                 public override Type ReflectedType {
 176                         get {
 177                                 return type;
 178                         }
 179                 }
 180
 181                 public override Type DeclaringType {
 182                         get {
 183                                 return type;
 184                         }
 185                 }
 186
 187                 [Obsolete]
 188                 public Type ReturnType {
 189                         get {
 190                                 return null;
 191                         }
 192                 }
 193
 194                 public override string Name {
 195                         get {
 196                                 return (attrs & MethodAttributes.Static) != 0 ? ConstructorInfo.TypeConstructorName : ConstructorInfo.ConstructorName;
 197                         }
 198                 }
 199
 200                 public string Signature {
 201                         get {
 202                                 return "constructor signature";
 203                         }
 204                 }
 205
 206                 public void AddDeclarativeSecurity (SecurityAction action, PermissionSet pset)
 207                 {
 208 #if !MOBILE
 209                         if (pset == null)
 210                                 throw new ArgumentNullException ("pset");
 211                         if ((action == SecurityAction.RequestMinimum) ||
 212                                 (action == SecurityAction.RequestOptional) ||
 213                                 (action == SecurityAction.RequestRefuse))
 214                                 throw new ArgumentOutOfRangeException ("action", "Request* values are not permitted");
 215
 216                         RejectIfCreated ();
 217
 218                         if (permissions != null) {
 219                                 /* Check duplicate actions */
 220                                 foreach (RefEmitPermissionSet set in permissions)
 221                                         if (set.action == action)
 222                                                 throw new InvalidOperationException ("Multiple permission sets specified with the same SecurityAction.");
 223
 224                                 RefEmitPermissionSet[] new_array = new RefEmitPermissionSet [permissions.Length + 1];
 225                                 permissions.CopyTo (new_array, 0);
 226                                 permissions = new_array;
 227                         }
 228                         else
 229                                 permissions = new RefEmitPermissionSet [1];
 230
 231                         permissions [permissions.Length - 1] = new RefEmitPermissionSet (action, pset.ToXml ().ToString ());
 232                         attrs |= MethodAttributes.HasSecurity;
 233 #endif
 234                 }
 235
 236                 public ParameterBuilder DefineParameter (int iSequence, ParameterAttributes attributes, string strParamName)
 237                 {
 238                         if (iSequence < 1 || iSequence > GetParametersCount ())
 239                                 throw new ArgumentOutOfRangeException ("iSequence");
 240                         if (type.is_created)
 241                                 throw not_after_created ();
 242
 243                         ParameterBuilder pb = new ParameterBuilder (this, iSequence, attributes, strParamName);
 244                         if (pinfo == null)
 245                                 pinfo = new ParameterBuilder [parameters.Length + 1];
 246                         pinfo [iSequence] = pb;
 247                         return pb;
 248                 }
 249
 250                 public override bool IsDefined (Type attributeType, bool inherit)
 251                 {
 252                         throw not_supported ();
 253                 }
 254
 255                 public override object [] GetCustomAttributes (bool inherit)
 256                 {
 257                         throw not_supported ();
 258                 }
 259
 260                 public override object [] GetCustomAttributes (Type attributeType, bool inherit)
 261                 {
 262                         throw not_supported ();
 263                 }
 264
 265                 public ILGenerator GetILGenerator ()
 266                 {
 267                         return GetILGenerator (64);
 268                 }
 269
 270                 public ILGenerator GetILGenerator (int streamSize)
 271                 {
 272                         if (ilgen != null)
 273                                 return ilgen;
 274                         ilgen = new ILGenerator (type.Module, ((ModuleBuilder)type.Module).GetTokenGenerator (), streamSize);
 275                         return ilgen;
 276                 }
 277
 278                 public void SetMethodBody (byte[] il, int maxStack, byte[] localSignature,
 279                         IEnumerable<ExceptionHandler> exceptionHandlers, IEnumerable<int> tokenFixups)
 280                 {
 281                         var ilgen = GetILGenerator ();
 282                         ilgen.Init (il, maxStack, localSignature, exceptionHandlers, tokenFixups);
 283                 }
 284
 285
 286                 public void SetCustomAttribute (CustomAttributeBuilder customBuilder)
 287                 {
 288                         if (customBuilder == null)
 289                                 throw new ArgumentNullException ("customBuilder");
 290
 291                         string attrname = customBuilder.Ctor.ReflectedType.FullName;
 292                         if (attrname == "System.Runtime.CompilerServices.MethodImplAttribute") {
 293                                 byte[] data = customBuilder.Data;
 294                                 int impla; // the (stupid) ctor takes a short or an int ...
 295                                 impla = (int)data [2];
 296                                 impla |= ((int)data [3]) << 8;
 297                                 SetImplementationFlags ((MethodImplAttributes)impla);
 298                                 return;
 299                         }
 300                         if (cattrs != null) {
 301                                 CustomAttributeBuilder[] new_array = new CustomAttributeBuilder [cattrs.Length + 1];
 302                                 cattrs.CopyTo (new_array, 0);
 303                                 new_array [cattrs.Length] = customBuilder;
 304                                 cattrs = new_array;
 305                         } else {
 306                                 cattrs = new CustomAttributeBuilder [1];
 307                                 cattrs [0] = customBuilder;
 308                         }
 309                 }
 310
 311                 [ComVisible (true)]
 312                 public void SetCustomAttribute (ConstructorInfo con, byte[] binaryAttribute)
 313                 {
 314                         if (con == null)
 315                                 throw new ArgumentNullException ("con");
 316                         if (binaryAttribute == null)
 317                                 throw new ArgumentNullException ("binaryAttribute");
 318
 319                         SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
 320                 }
 321
 322                 public void SetImplementationFlags (MethodImplAttributes attributes)
 323                 {
 324                         if (type.is_created)
 325                                 throw not_after_created ();
 326
 327                         iattrs = attributes;
 328                 }
 329
 330                 public Module GetModule ()
 331                 {
 332                         return type.Module;
 333                 }
 334
 335                 public MethodToken GetToken ()
 336                 {
 337                         return new MethodToken (0x06000000 | table_idx);
 338                 }
 339
 340                 [MonoTODO]
 341                 public void SetSymCustomAttribute (string name, byte[] data)
 342                 {
 343                         if (type.is_created)
 344                                 throw not_after_created ();
 345                 }
 346
 347                 public override Module Module {
 348                         get {
 349                                 return GetModule ();
 350                         }
 351                 }
 352
 353                 public override string ToString ()
 354                 {
 355                         return "ConstructorBuilder ['" + type.Name + "']";
 356                 }
 357
 358                 internal void fixup ()
 359                 {
 360                         if (((attrs & (MethodAttributes.Abstract | MethodAttributes.PinvokeImpl)) == 0) && ((iattrs & (MethodImplAttributes.Runtime | MethodImplAttributes.InternalCall)) == 0)) {
 361                         if ((ilgen == null) || (ilgen.ILOffset == 0))
 362                                 throw new InvalidOperationException ("Method '" + Name + "' does not have a method body.");
 363                         }
 364                         if (ilgen != null)
 365                                 ilgen.label_fixup (this);
 366                 }
 367
 368                 internal void ResolveUserTypes () {
 369                         TypeBuilder.ResolveUserTypes (parameters);
 370                         if (paramModReq != null) {
 371                                 foreach (var types in paramModReq)
 372                                         TypeBuilder.ResolveUserTypes (types);
 373                         }
 374                         if (paramModOpt != null) {
 375                                 foreach (var types in paramModOpt)
 376                                         TypeBuilder.ResolveUserTypes (types);
 377                         }
 378                 }
 379
 380                 internal void FixupTokens (Dictionary<int, int> token_map, Dictionary<int, MemberInfo> member_map) {
 381                         if (ilgen != null)
 382                                 ilgen.FixupTokens (token_map, member_map);
 383                 }
 384
 385                 internal void GenerateDebugInfo (ISymbolWriter symbolWriter)
 386                 {
 387                         if (ilgen != null && ilgen.HasDebugInfo) {
 388                                 SymbolToken token = new SymbolToken (GetToken().Token);
 389                                 symbolWriter.OpenMethod (token);
 390                                 symbolWriter.SetSymAttribute (token, "__name", System.Text.Encoding.UTF8.GetBytes (Name));
 391                                 ilgen.GenerateDebugInfo (symbolWriter);
 392                                 symbolWriter.CloseMethod ();
 393                         }
 394                 }
 395
 396                 internal override int get_next_table_index (object obj, int table, bool inc)
 397                 {
 398                         return type.get_next_table_index (obj, table, inc);
 399                 }
 400
 401                 private void RejectIfCreated ()
 402                 {
 403                         if (type.is_created)
 404                                 throw new InvalidOperationException ("Type definition of the method is complete.");
 405                 }
 406
 407                 private Exception not_supported ()
 408                 {
 409                         return new NotSupportedException ("The invoked member is not supported in a dynamic module.");
 410                 }
 411
 412                 private Exception not_after_created ()
 413                 {
 414                         return new InvalidOperationException ("Unable to change after type has been created.");
 415                 }
 416
 417                 private Exception not_created ()
 418                 {
 419                         return new NotSupportedException ("The type is not yet created.");
 420                 }
 421
 422                 void _ConstructorBuilder.GetIDsOfNames ([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
 423                 {
 424                         throw new NotImplementedException ();
 425                 }
 426
 427                 void _ConstructorBuilder.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
 428                 {
 429                         throw new NotImplementedException ();
 430                 }
 431
 432                 void _ConstructorBuilder.GetTypeInfoCount (out uint pcTInfo)
 433                 {
 434                         throw new NotImplementedException ();
 435                 }
 436
 437                 void _ConstructorBuilder.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams, IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
 438                 {
 439                         throw new NotImplementedException ();
 440                 }
 441         }
 442 }
 443 #endif