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

   1
   2 //
   3 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
   4 //
   5 // Permission is hereby granted, free of charge, to any person obtaining
   6 // a copy of this software and associated documentation files (the
   7 // "Software"), to deal in the Software without restriction, including
   8 // without limitation the rights to use, copy, modify, merge, publish,
   9 // distribute, sublicense, and/or sell copies of the Software, and to
  10 // permit persons to whom the Software is furnished to do so, subject to
  11 // the following conditions:
  12 //
  13 // The above copyright notice and this permission notice shall be
  14 // included in all copies or substantial portions of the Software.
  15 //
  16 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  20 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  21 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  22 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23 //
  24
  25 //
  26 // System.Reflection.Emit/ModuleBuilder.cs
  27 //
  28 // Author:
  29 //   Paolo Molaro (lupus@ximian.com)
  30 //
  31 // (C) 2001 Ximian, Inc.  http://www.ximian.com
  32 //
  33
  34 using System;
  35 using System.Reflection;
  36 using System.Collections;
  37 using System.Runtime.CompilerServices;
  38 using System.Runtime.InteropServices;
  39 using System.Diagnostics.SymbolStore;
  40 using System.IO;
  41 using System.Resources;
  42 using System.Globalization;
  43
  44 namespace System.Reflection.Emit {
  45         public class ModuleBuilder : Module {
  46                 #region Sync with reflection.h
  47                 private IntPtr dynamic_image;
  48                 private int num_types;
  49                 private TypeBuilder[] types;
  50                 private CustomAttributeBuilder[] cattrs;
  51                 private byte[] guid;
  52                 private int table_idx;
  53                 internal AssemblyBuilder assemblyb;
  54                 private MethodBuilder[] global_methods;
  55                 private FieldBuilder[] global_fields;
  56                 bool is_main;
  57                 private MonoResource[] resources;
  58                 #endregion
  59                 private TypeBuilder global_type;
  60                 private Type global_type_created;
  61                 Hashtable name_cache;
  62                 Hashtable us_string_cache = new Hashtable ();
  63                 private int[] table_indexes;
  64                 bool transient;
  65                 ModuleBuilderTokenGenerator token_gen;
  66                 ArrayList resource_writers = null;
  67
  68                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  69                 private static extern void basic_init (ModuleBuilder ab);
  70
  71                 internal ModuleBuilder (AssemblyBuilder assb, string name, string fullyqname, bool emitSymbolInfo, bool transient) {
  72                         this.name = this.scopename = name;
  73                         this.fqname = fullyqname;
  74                         this.assembly = this.assemblyb = assb;
  75                         this.transient = transient;
  76                         // to keep mcs fast we do not want CryptoConfig wo be involved to create the RNG
  77                         guid = Guid.FastNewGuidArray ();
  78                         // guid = Guid.NewGuid().ToByteArray ();
  79                         table_idx = get_next_table_index (this, 0x00, true);
  80                         name_cache = new Hashtable ();
  81
  82                         basic_init (this);
  83
  84                         CreateGlobalType ();
  85                 }
  86
  87                 public override string FullyQualifiedName {get { return fqname;}}
  88
  89                 public bool IsTransient () {
  90                         return transient;
  91                 }
  92
  93                 public void CreateGlobalFunctions ()
  94                 {
  95                         if (global_type_created != null)
  96                                 throw new InvalidOperationException ("global methods already created");
  97                         if (global_type != null)
  98                                 global_type_created = global_type.CreateType ();
  99                 }
 100
 101                 public FieldBuilder DefineInitializedData( string name, byte[] data, FieldAttributes attributes) {
 102                         if (data == null)
 103                                 throw new ArgumentNullException ("data");
 104
 105                         FieldBuilder fb = DefineUninitializedData (name, data.Length,
 106                                                                                                            attributes | FieldAttributes.HasFieldRVA);
 107                         fb.SetRVAData (data);
 108
 109                         return fb;
 110                 }
 111
 112                 public FieldBuilder DefineUninitializedData( string name, int size, FieldAttributes attributes) {
 113                         if (name == null)
 114                                 throw new ArgumentNullException ("name");
 115                         if (global_type_created != null)
 116                                 throw new InvalidOperationException ("global fields already created");
 117                         if (global_type == null)
 118                                 global_type = new TypeBuilder (this, 0);
 119
 120                         string typeName = "$ArrayType$" + size;
 121                         Type datablobtype = GetType (typeName, false, false);
 122                         if (datablobtype == null) {
 123                                 TypeBuilder tb = DefineType (typeName,
 124                                     TypeAttributes.Public|TypeAttributes.ExplicitLayout|TypeAttributes.Sealed,
 125                                         assemblyb.corlib_value_type, null, PackingSize.Size1, size);
 126                                 tb.CreateType ();
 127                                 datablobtype = tb;
 128                         }
 129                         FieldBuilder fb = global_type.DefineField (name, datablobtype, attributes|FieldAttributes.Static);
 130
 131                         if (global_fields != null) {
 132                                 FieldBuilder[] new_fields = new FieldBuilder [global_fields.Length+1];
 133                                 System.Array.Copy (global_fields, new_fields, global_fields.Length);
 134                                 new_fields [global_fields.Length] = fb;
 135                                 global_fields = new_fields;
 136                         } else {
 137                                 global_fields = new FieldBuilder [1];
 138                                 global_fields [0] = fb;
 139                         }
 140                         return fb;
 141                 }
 142
 143                 private void addGlobalMethod (MethodBuilder mb) {
 144                         if (global_methods != null) {
 145                                 MethodBuilder[] new_methods = new MethodBuilder [global_methods.Length+1];
 146                                 System.Array.Copy (global_methods, new_methods, global_methods.Length);
 147                                 new_methods [global_methods.Length] = mb;
 148                                 global_methods = new_methods;
 149                         } else {
 150                                 global_methods = new MethodBuilder [1];
 151                                 global_methods [0] = mb;
 152                         }
 153                 }
 154
 155                 public MethodBuilder DefineGlobalMethod (string name, MethodAttributes attributes, Type returnType, Type[] parameterTypes)
 156                 {
 157                         return DefineGlobalMethod (name, attributes, CallingConventions.Standard, returnType, parameterTypes);
 158                 }
 159
 160                 public MethodBuilder DefineGlobalMethod (string name, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] parameterTypes) {
 161                         return DefineGlobalMethod (name, attributes, callingConvention, returnType, null, null, parameterTypes, null, null);
 162                 }
 163
 164 #if NET_2_0 || BOOTSTRAP_NET_2_0
 165                 public
 166 #else
 167                 internal
 168 #endif
 169                 MethodBuilder DefineGlobalMethod (string name, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] requiredReturnTypeCustomModifiers, Type[] optionalReturnTypeCustomModifiers, Type[] parameterTypes, Type[][] requiredParameterTypeCustomModifiers, Type[][] optionalParameterTypeCustomModifiers)
 170                 {
 171                         if (name == null)
 172                                 throw new ArgumentNullException ("name");
 173                         if ((attributes & MethodAttributes.Static) == 0)
 174                                 throw new ArgumentException ("global methods must be static");
 175                         if (global_type_created != null)
 176                                 throw new InvalidOperationException ("global methods already created");
 177                         if (global_type == null)
 178                                 global_type = new TypeBuilder (this, 0);
 179                         MethodBuilder mb = global_type.DefineMethod (name, attributes, callingConvention, returnType, requiredReturnTypeCustomModifiers, optionalReturnTypeCustomModifiers, parameterTypes, requiredParameterTypeCustomModifiers, optionalParameterTypeCustomModifiers);
 180
 181                         addGlobalMethod (mb);
 182                         return mb;
 183                 }
 184
 185                 public MethodBuilder DefinePInvokeMethod (string name, string dllName, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] parameterTypes, CallingConvention nativeCallConv, CharSet nativeCharSet) {
 186                         return DefinePInvokeMethod (name, dllName, name, attributes, callingConvention, returnType, parameterTypes, nativeCallConv, nativeCharSet);
 187                 }
 188
 189                 public MethodBuilder DefinePInvokeMethod (string name, string dllName, string entryName, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] parameterTypes, CallingConvention nativeCallConv, CharSet nativeCharSet) {
 190                         if (name == null)
 191                                 throw new ArgumentNullException ("name");
 192                         if ((attributes & MethodAttributes.Static) == 0)
 193                                 throw new ArgumentException ("global methods must be static");
 194                         if (global_type_created != null)
 195                                 throw new InvalidOperationException ("global methods already created");
 196                         if (global_type == null)
 197                                 global_type = new TypeBuilder (this, 0);
 198                         MethodBuilder mb = global_type.DefinePInvokeMethod (name, dllName, entryName, attributes, callingConvention, returnType, parameterTypes, nativeCallConv, nativeCharSet);
 199
 200                         addGlobalMethod (mb);
 201                         return mb;
 202                 }
 203
 204                 public TypeBuilder DefineType (string name) {
 205                         return DefineType (name, 0);
 206                 }
 207
 208                 public TypeBuilder DefineType (string name, TypeAttributes attr) {
 209                         return DefineType (name, attr, typeof(object), null);
 210                 }
 211
 212                 public TypeBuilder DefineType (string name, TypeAttributes attr, Type parent) {
 213                         return DefineType (name, attr, parent, null);
 214                 }
 215
 216                 private TypeBuilder DefineType (string name, TypeAttributes attr, Type parent, Type[] interfaces, PackingSize packsize, int typesize) {
 217                         if (name_cache.Contains (name))
 218                                 throw new ArgumentException ("Duplicate type name within an assembly.");
 219
 220                         TypeBuilder res = new TypeBuilder (this, name, attr, parent, interfaces, packsize, typesize, null);
 221                         if (types != null) {
 222                                 if (types.Length == num_types) {
 223                                         TypeBuilder[] new_types = new TypeBuilder [types.Length * 2];
 224                                         System.Array.Copy (types, new_types, num_types);
 225                                         types = new_types;
 226                                 }
 227                         } else {
 228                                 types = new TypeBuilder [1];
 229                         }
 230                         types [num_types] = res;
 231                         num_types ++;
 232                         name_cache.Add (name, res);
 233                         return res;
 234                 }
 235
 236                 internal void RegisterTypeName (TypeBuilder tb, string name) {
 237                         name_cache.Add (name, tb);
 238                 }
 239
 240                 public TypeBuilder DefineType (string name, TypeAttributes attr, Type parent, Type[] interfaces) {
 241                         return DefineType (name, attr, parent, interfaces, PackingSize.Unspecified, TypeBuilder.UnspecifiedTypeSize);
 242                 }
 243
 244                 public TypeBuilder DefineType (string name, TypeAttributes attr, Type parent, int typesize) {
 245                         return DefineType (name, attr, parent, null, PackingSize.Unspecified, TypeBuilder.UnspecifiedTypeSize);
 246                 }
 247
 248                 public TypeBuilder DefineType (string name, TypeAttributes attr, Type parent, PackingSize packsize) {
 249                         return DefineType (name, attr, parent, null, packsize, TypeBuilder.UnspecifiedTypeSize);
 250                 }
 251
 252                 public TypeBuilder DefineType (string name, TypeAttributes attr, Type parent, PackingSize packsize, int typesize) {
 253                         return DefineType (name, attr, parent, null, packsize, typesize);
 254                 }
 255
 256                 public MethodInfo GetArrayMethod( Type arrayClass, string methodName, CallingConventions callingConvention, Type returnType, Type[] parameterTypes) {
 257                         return new MonoArrayMethod (arrayClass, methodName, callingConvention, returnType, parameterTypes);
 258                 }
 259
 260                 public EnumBuilder DefineEnum( string name, TypeAttributes visibility, Type underlyingType) {
 261                         EnumBuilder eb = new EnumBuilder (this, name, visibility, underlyingType);
 262                         return eb;
 263                 }
 264
 265                 public override Type GetType( string className) {
 266                         return GetType (className, false, false);
 267                 }
 268
 269                 public override Type GetType( string className, bool ignoreCase) {
 270                         return GetType (className, false, ignoreCase);
 271                 }
 272
 273                 private TypeBuilder search_in_array (TypeBuilder[] arr, int validElementsInArray, string className) {
 274                         int i;
 275                         for (i = 0; i < validElementsInArray; ++i) {
 276                                 if (String.Compare (className, arr [i].FullName, true, CultureInfo.InvariantCulture) == 0) {
 277                                         return arr [i];
 278                                 }
 279                         }
 280                         return null;
 281                 }
 282
 283                 private TypeBuilder search_nested_in_array (TypeBuilder[] arr, int validElementsInArray, string className) {
 284                         int i;
 285                         for (i = 0; i < validElementsInArray; ++i) {
 286                                 if (String.Compare (className, arr [i].Name, true, CultureInfo.InvariantCulture) == 0)
 287                                         return arr [i];
 288                         }
 289                         return null;
 290                 }
 291
 292                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 293                 private static extern Type create_modified_type (TypeBuilder tb, string modifiers);
 294
 295                 static readonly char [] type_modifiers = {'&', '[', '*'};
 296
 297                 private TypeBuilder GetMaybeNested (TypeBuilder t, string className) {
 298                         int subt;
 299                         string pname, rname;
 300
 301                         subt = className.IndexOf ('+');
 302                         if (subt < 0) {
 303                                 if (t.subtypes != null)
 304                                         return search_nested_in_array (t.subtypes, t.subtypes.Length, className);
 305                                 return null;
 306                         }
 307                         if (t.subtypes != null) {
 308                                 pname = className.Substring (0, subt);
 309                                 rname = className.Substring (subt + 1);
 310                                 TypeBuilder result = search_nested_in_array (t.subtypes, t.subtypes.Length, pname);
 311                                 if (result != null)
 312                                         return GetMaybeNested (result, rname);
 313                         }
 314                         return null;
 315                 }
 316
 317                 public override Type GetType (string className, bool throwOnError, bool ignoreCase) {
 318                         int subt;
 319                         string orig = className;
 320                         string modifiers;
 321                         TypeBuilder result = null;
 322
 323                         if (types == null && throwOnError)
 324                                 throw new TypeLoadException (className);
 325
 326                         subt = className.IndexOfAny (type_modifiers);
 327                         if (subt >= 0) {
 328                                 modifiers = className.Substring (subt);
 329                                 className = className.Substring (0, subt);
 330                         } else
 331                                 modifiers = null;
 332
 333                         if (!ignoreCase) {
 334                                 result =  name_cache [className] as TypeBuilder;
 335                         } else {
 336                                 subt = className.IndexOf ('+');
 337                                 if (subt < 0) {
 338                                         if (types != null)
 339                                                 result = search_in_array (types, num_types,  className);
 340                                 } else {
 341                                         string pname, rname;
 342                                         pname = className.Substring (0, subt);
 343                                         rname = className.Substring (subt + 1);
 344                                         result = search_in_array (types, num_types, pname);
 345                                         if (result != null)
 346                                                 result = GetMaybeNested (result, rname);
 347                                 }
 348                         }
 349                         if ((result == null) && throwOnError)
 350                                 throw new TypeLoadException (orig);
 351                         if (result != null && (modifiers != null))
 352                                 return create_modified_type (result, modifiers);
 353                         return result;
 354                 }
 355
 356                 internal int get_next_table_index (object obj, int table, bool inc) {
 357                         if (table_indexes == null) {
 358                                 table_indexes = new int [64];
 359                                 for (int i=0; i < 64; ++i)
 360                                         table_indexes [i] = 1;
 361                                 /* allow room for .<Module> in TypeDef table */
 362                                 table_indexes [0x02] = 2;
 363                         }
 364                         // Console.WriteLine ("getindex for table "+table.ToString()+" got "+table_indexes [table].ToString());
 365                         if (inc)
 366                                 return table_indexes [table]++;
 367                         return table_indexes [table];
 368                 }
 369
 370                 public void SetCustomAttribute( CustomAttributeBuilder customBuilder) {
 371                         if (cattrs != null) {
 372                                 CustomAttributeBuilder[] new_array = new CustomAttributeBuilder [cattrs.Length + 1];
 373                                 cattrs.CopyTo (new_array, 0);
 374                                 new_array [cattrs.Length] = customBuilder;
 375                                 cattrs = new_array;
 376                         } else {
 377                                 cattrs = new CustomAttributeBuilder [1];
 378                                 cattrs [0] = customBuilder;
 379                         }
 380                 }
 381                 public void SetCustomAttribute( ConstructorInfo con, byte[] binaryAttribute) {
 382                         SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
 383                 }
 384
 385                 public ISymbolWriter GetSymWriter () {
 386                         return null;
 387                 }
 388
 389                 public ISymbolDocumentWriter DefineDocument (string url, Guid language, Guid languageVendor, Guid documentType) {
 390                         return null;
 391                 }
 392
 393                 public override Type [] GetTypes ()
 394                 {
 395                         if (types == null)
 396                                 return new TypeBuilder [0];
 397
 398                         int n = num_types;
 399                         TypeBuilder [] copy = new TypeBuilder [n];
 400                         Array.Copy (types, copy, n);
 401
 402                         return copy;
 403                 }
 404
 405                 public IResourceWriter DefineResource (string name, string description, ResourceAttributes attribute)
 406                 {
 407                         if (name == null)
 408                                 throw new ArgumentNullException ("name");
 409                         if (name == String.Empty)
 410                                 throw new ArgumentException ("name cannot be empty");
 411                         if (transient)
 412                                 throw new InvalidOperationException ("The module is transient");
 413                         if (!assemblyb.IsSave)
 414                                 throw new InvalidOperationException ("The assembly is transient");
 415                         ResourceWriter writer = new ResourceWriter (new MemoryStream ());
 416                         if (resource_writers == null)
 417                                 resource_writers = new ArrayList ();
 418                         resource_writers.Add (writer);
 419
 420                         // The data is filled out later
 421                         if (resources != null) {
 422                                 MonoResource[] new_r = new MonoResource [resources.Length + 1];
 423                                 System.Array.Copy(resources, new_r, resources.Length);
 424                                 resources = new_r;
 425                         } else {
 426                                 resources = new MonoResource [1];
 427                         }
 428                         int p = resources.Length - 1;
 429                         resources [p].name = name;
 430                         resources [p].attrs = attribute;
 431
 432                         return writer;
 433                 }
 434
 435                 public IResourceWriter DefineResource (string name, string description)
 436                 {
 437                         return DefineResource (name, description, ResourceAttributes.Public);
 438                 }
 439
 440                 [MonoTODO]
 441                 public void DefineUnmanagedResource (byte[] resource)
 442                 {
 443                         if (resource == null)
 444                                 throw new ArgumentNullException ("resource");
 445
 446                         throw new NotImplementedException ();
 447                 }
 448
 449                 [MonoTODO]
 450                 public void DefineUnmanagedResource (string resourceFileName)
 451                 {
 452                         if (resourceFileName == null)
 453                                 throw new ArgumentNullException ("resourceFileName");
 454                         if (resourceFileName == String.Empty)
 455                                 throw new ArgumentException ("resourceFileName");
 456                         if (!File.Exists (resourceFileName) || Directory.Exists (resourceFileName))
 457                                 throw new FileNotFoundException ("File '" + resourceFileName + "' does not exists or is a directory.");
 458
 459                         throw new NotImplementedException ();
 460                 }
 461
 462                 [MonoTODO]
 463                 public void SetSymCustomAttribute (string name, byte[] data)
 464                 {
 465                         throw new NotImplementedException ();
 466                 }
 467
 468                 [MonoTODO]
 469                 public void SetUserEntryPoint (MethodInfo entryPoint)
 470                 {
 471                         if (entryPoint == null)
 472                                 throw new ArgumentNullException ("entryPoint");
 473                         if (entryPoint.DeclaringType.Module != this)
 474                                 throw new InvalidOperationException ("entryPoint is not contained in this module");
 475                         throw new NotImplementedException ();
 476                 }
 477
 478                 public MethodToken GetMethodToken (MethodInfo method)
 479                 {
 480                         if (method == null)
 481                                 throw new ArgumentNullException ("method");
 482                         if (method.DeclaringType.Module != this)
 483                                 throw new InvalidOperationException ("The method is not in this module");
 484                         return new MethodToken (GetToken (method));
 485                 }
 486
 487                 public MethodToken GetArrayMethodToken (Type arrayClass, string methodName, CallingConventions callingConvention, Type returnType, Type[] parameterTypes)
 488                 {
 489                         return GetMethodToken (GetArrayMethod (arrayClass, methodName, callingConvention, returnType, parameterTypes));
 490                 }
 491
 492
 493                 public MethodToken GetConstructorToken (ConstructorInfo con)
 494                 {
 495                         if (con == null)
 496                                 throw new ArgumentNullException ("con");
 497                         return new MethodToken (GetToken (con));
 498                 }
 499
 500                 public FieldToken GetFieldToken (FieldInfo field)
 501                 {
 502                         if (field == null)
 503                                 throw new ArgumentNullException ("field");
 504                         if (field.DeclaringType.Module != this)
 505                                 throw new InvalidOperationException ("The method is not in this module");
 506                         return new FieldToken (GetToken (field));
 507                 }
 508
 509                 [MonoTODO]
 510                 public SignatureToken GetSignatureToken (byte[] sigBytes, int sigLength)
 511                 {
 512                         throw new NotImplementedException ();
 513                 }
 514
 515                 public SignatureToken GetSignatureToken (SignatureHelper sigHelper)
 516                 {
 517                         if (sigHelper == null)
 518                                 throw new ArgumentNullException ("sigHelper");
 519                         return new SignatureToken (GetToken (sigHelper));
 520                 }
 521
 522                 public StringToken GetStringConstant (string str)
 523                 {
 524                         if (str == null)
 525                                 throw new ArgumentNullException ("str");
 526                         return new StringToken (GetToken (str));
 527                 }
 528
 529                 public TypeToken GetTypeToken (Type type)
 530                 {
 531                         if (type == null)
 532                                 throw new ArgumentNullException ("type");
 533                         if (type.IsByRef)
 534                                 throw new ArgumentException ("type can't be a byref type", "type");
 535                         if (!IsTransient () && (type.Module is ModuleBuilder) && ((ModuleBuilder)type.Module).IsTransient ())
 536                                 throw new InvalidOperationException ("a non-transient module can't reference a transient module");
 537                         return new TypeToken (GetToken (type));
 538                 }
 539
 540                 public TypeToken GetTypeToken (string type)
 541                 {
 542                         return GetTypeToken (GetType (name));
 543                 }
 544
 545                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 546                 private static extern int getUSIndex (ModuleBuilder mb, string str);
 547
 548                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 549                 private static extern int getToken (ModuleBuilder mb, object obj);
 550
 551                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 552                 private static extern int getMethodToken (ModuleBuilder mb, MethodInfo method,
 553                                                           Type[] opt_param_types);
 554
 555                 internal int GetToken (string str) {
 556                         if (us_string_cache.Contains (str))
 557                                 return (int)us_string_cache [str];
 558                         int result = getUSIndex (this, str);
 559                         us_string_cache [str] = result;
 560                         return result;
 561                 }
 562
 563                 internal int GetToken (MemberInfo member) {
 564                         return getToken (this, member);
 565                 }
 566
 567                 internal int GetToken (MethodInfo method, Type[] opt_param_types) {
 568                         return getMethodToken (this, method, opt_param_types);
 569                 }
 570
 571                 internal int GetToken (SignatureHelper helper) {
 572                         return getToken (this, helper);
 573                 }
 574
 575                 internal TokenGenerator GetTokenGenerator () {
 576                         if (token_gen == null)
 577                                 token_gen = new ModuleBuilderTokenGenerator (this);
 578                         return token_gen;
 579                 }
 580
 581                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 582                 private static extern void build_metadata (ModuleBuilder mb);
 583
 584                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 585                 private extern void WriteToFile (IntPtr handle);
 586
 587                 internal void Save ()
 588                 {
 589                         if (transient && !is_main)
 590                                 return;
 591
 592                         if (types != null) {
 593                                 for (int i = 0; i < num_types; ++i)
 594                                         if (!types [i].is_created)
 595                                                 throw new NotSupportedException ("Type '" + types [i].FullName + "' was not completed.");
 596                         }
 597
 598                         if ((global_type != null) && (global_type_created == null))
 599                                 global_type_created = global_type.CreateType ();
 600
 601                         if (resource_writers != null) {
 602                                 for (int i = 0; i < resource_writers.Count; ++i) {
 603                                         ResourceWriter writer = (ResourceWriter)resource_writers [i];
 604                                         writer.Generate ();
 605                                         MemoryStream stream = (MemoryStream)writer.Stream;
 606                                         resources [i].data = new byte [stream.Length];
 607                                         stream.Seek (0, SeekOrigin.Begin);
 608                                         stream.Read (resources [i].data, 0, (int)stream.Length);
 609                                 }
 610                         }
 611
 612                         build_metadata (this);
 613
 614                         string fileName = fqname;
 615                         if (assemblyb.AssemblyDir != null)
 616                                 fileName = Path.Combine (assemblyb.AssemblyDir, fileName);
 617
 618                         using (FileStream file = new FileStream (fileName, FileMode.Create, FileAccess.Write))
 619                                 WriteToFile (file.Handle);
 620
 621                         //
 622                         // The constant 0x80000000 is internal to Mono, it means `make executable'
 623                         //
 624                         File.SetAttributes (fileName, (FileAttributes) (unchecked ((int) 0x80000000)));
 625                 }
 626
 627                 internal string FileName {
 628                         get {
 629                                 return fqname;
 630                         }
 631                 }
 632
 633                 internal bool IsMain {
 634                         set {
 635                                 is_main = value;
 636                         }
 637                 }
 638
 639                 internal void CreateGlobalType () {
 640                         if (global_type == null)
 641                                 global_type = new TypeBuilder (this, 0);
 642                 }
 643
 644                 internal static Guid Mono_GetGuid (ModuleBuilder mb)
 645                 {
 646                         return new Guid (mb.guid);
 647                 }
 648         }
 649
 650         internal class ModuleBuilderTokenGenerator : TokenGenerator {
 651
 652                 private ModuleBuilder mb;
 653
 654                 public ModuleBuilderTokenGenerator (ModuleBuilder mb) {
 655                         this.mb = mb;
 656                 }
 657
 658                 public int GetToken (string str) {
 659                         return mb.GetToken (str);
 660                 }
 661
 662                 public int GetToken (MemberInfo member) {
 663                         return mb.GetToken (member);
 664                 }
 665
 666                 public int GetToken (MethodInfo method, Type[] opt_param_types) {
 667                         return mb.GetToken (method, opt_param_types);
 668                 }
 669
 670                 public int GetToken (SignatureHelper helper) {
 671                         return mb.GetToken (helper);
 672                 }
 673         }
 674 }