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 #if NET_2_0
  46         [ComVisible (true)]
  47         [ComDefaultInterface (typeof (_ModuleBuilder))]
  48 #endif
  49         [ClassInterface (ClassInterfaceType.None)]
  50         public class ModuleBuilder : Module, _ModuleBuilder {
  51                 #region Sync with object-internals.h
  52                 private UIntPtr dynamic_image; /* GC-tracked */
  53                 private int num_types;
  54                 private TypeBuilder[] types;
  55                 private CustomAttributeBuilder[] cattrs;
  56                 private byte[] guid;
  57                 private int table_idx;
  58                 internal AssemblyBuilder assemblyb;
  59                 private MethodBuilder[] global_methods;
  60                 private FieldBuilder[] global_fields;
  61                 bool is_main;
  62                 private MonoResource[] resources;
  63                 #endregion
  64                 private TypeBuilder global_type;
  65                 private Type global_type_created;
  66                 Hashtable name_cache;
  67                 Hashtable us_string_cache = new Hashtable ();
  68                 private int[] table_indexes;
  69                 bool transient;
  70                 ModuleBuilderTokenGenerator token_gen;
  71                 Hashtable resource_writers;
  72                 ISymbolWriter symbolWriter;
  73
  74                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  75                 private static extern void basic_init (ModuleBuilder ab);
  76
  77                 internal ModuleBuilder (AssemblyBuilder assb, string name, string fullyqname, bool emitSymbolInfo, bool transient) {
  78                         this.name = this.scopename = name;
  79                         this.fqname = fullyqname;
  80                         this.assembly = this.assemblyb = assb;
  81                         this.transient = transient;
  82                         // to keep mcs fast we do not want CryptoConfig wo be involved to create the RNG
  83                         guid = Guid.FastNewGuidArray ();
  84                         // guid = Guid.NewGuid().ToByteArray ();
  85                         table_idx = get_next_table_index (this, 0x00, true);
  86                         name_cache = new Hashtable ();
  87
  88                         basic_init (this);
  89
  90                         CreateGlobalType ();
  91
  92                         if (emitSymbolInfo) {
  93                                 Assembly asm = Assembly.LoadWithPartialName ("Mono.CompilerServices.SymbolWriter");
  94                                 Type t = asm.GetType ("Mono.CompilerServices.SymbolWriter.SymbolWriterImpl");
  95                                 if (t != null) {
  96                                         symbolWriter = (ISymbolWriter) Activator.CreateInstance (t, new object[] { this });
  97                                         string fileName = fqname;
  98                                         if (assemblyb.AssemblyDir != null)
  99                                                 fileName = Path.Combine (assemblyb.AssemblyDir, fileName);
 100                                         symbolWriter.Initialize (IntPtr.Zero, fileName, true);
 101                                 }
 102                         }
 103                 }
 104
 105                 public override string FullyQualifiedName {get { return fqname;}}
 106
 107                 public bool IsTransient () {
 108                         return transient;
 109                 }
 110
 111                 public void CreateGlobalFunctions ()
 112                 {
 113                         if (global_type_created != null)
 114                                 throw new InvalidOperationException ("global methods already created");
 115                         if (global_type != null)
 116                                 global_type_created = global_type.CreateType ();
 117                 }
 118
 119                 public FieldBuilder DefineInitializedData( string name, byte[] data, FieldAttributes attributes) {
 120                         if (data == null)
 121                                 throw new ArgumentNullException ("data");
 122
 123                         FieldBuilder fb = DefineUninitializedData (name, data.Length,
 124                                                                                                            attributes | FieldAttributes.HasFieldRVA);
 125                         fb.SetRVAData (data);
 126
 127                         return fb;
 128                 }
 129
 130                 public FieldBuilder DefineUninitializedData( string name, int size, FieldAttributes attributes) {
 131                         if (name == null)
 132                                 throw new ArgumentNullException ("name");
 133                         if (global_type_created != null)
 134                                 throw new InvalidOperationException ("global fields already created");
 135                         if (global_type == null)
 136                                 global_type = new TypeBuilder (this, 0);
 137
 138                         string typeName = "$ArrayType$" + size;
 139                         Type datablobtype = GetType (typeName, false, false);
 140                         if (datablobtype == null) {
 141                                 TypeBuilder tb = DefineType (typeName,
 142                                     TypeAttributes.Public|TypeAttributes.ExplicitLayout|TypeAttributes.Sealed,
 143                                         assemblyb.corlib_value_type, null, PackingSize.Size1, size);
 144                                 tb.CreateType ();
 145                                 datablobtype = tb;
 146                         }
 147                         FieldBuilder fb = global_type.DefineField (name, datablobtype, attributes|FieldAttributes.Static);
 148
 149                         if (global_fields != null) {
 150                                 FieldBuilder[] new_fields = new FieldBuilder [global_fields.Length+1];
 151                                 System.Array.Copy (global_fields, new_fields, global_fields.Length);
 152                                 new_fields [global_fields.Length] = fb;
 153                                 global_fields = new_fields;
 154                         } else {
 155                                 global_fields = new FieldBuilder [1];
 156                                 global_fields [0] = fb;
 157                         }
 158                         return fb;
 159                 }
 160
 161                 private void addGlobalMethod (MethodBuilder mb) {
 162                         if (global_methods != null) {
 163                                 MethodBuilder[] new_methods = new MethodBuilder [global_methods.Length+1];
 164                                 System.Array.Copy (global_methods, new_methods, global_methods.Length);
 165                                 new_methods [global_methods.Length] = mb;
 166                                 global_methods = new_methods;
 167                         } else {
 168                                 global_methods = new MethodBuilder [1];
 169                                 global_methods [0] = mb;
 170                         }
 171                 }
 172
 173                 public MethodBuilder DefineGlobalMethod (string name, MethodAttributes attributes, Type returnType, Type[] parameterTypes)
 174                 {
 175                         return DefineGlobalMethod (name, attributes, CallingConventions.Standard, returnType, parameterTypes);
 176                 }
 177
 178                 public MethodBuilder DefineGlobalMethod (string name, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] parameterTypes) {
 179                         return DefineGlobalMethod (name, attributes, callingConvention, returnType, null, null, parameterTypes, null, null);
 180                 }
 181
 182 #if NET_2_0 || BOOTSTRAP_NET_2_0
 183                 public
 184 #else
 185                 internal
 186 #endif
 187                 MethodBuilder DefineGlobalMethod (string name, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] requiredReturnTypeCustomModifiers, Type[] optionalReturnTypeCustomModifiers, Type[] parameterTypes, Type[][] requiredParameterTypeCustomModifiers, Type[][] optionalParameterTypeCustomModifiers)
 188                 {
 189                         if (name == null)
 190                                 throw new ArgumentNullException ("name");
 191                         if ((attributes & MethodAttributes.Static) == 0)
 192                                 throw new ArgumentException ("global methods must be static");
 193                         if (global_type_created != null)
 194                                 throw new InvalidOperationException ("global methods already created");
 195                         if (global_type == null)
 196                                 global_type = new TypeBuilder (this, 0);
 197                         MethodBuilder mb = global_type.DefineMethod (name, attributes, callingConvention, returnType, requiredReturnTypeCustomModifiers, optionalReturnTypeCustomModifiers, parameterTypes, requiredParameterTypeCustomModifiers, optionalParameterTypeCustomModifiers);
 198
 199                         addGlobalMethod (mb);
 200                         return mb;
 201                 }
 202
 203                 public MethodBuilder DefinePInvokeMethod (string name, string dllName, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] parameterTypes, CallingConvention nativeCallConv, CharSet nativeCharSet) {
 204                         return DefinePInvokeMethod (name, dllName, name, attributes, callingConvention, returnType, parameterTypes, nativeCallConv, nativeCharSet);
 205                 }
 206
 207                 public MethodBuilder DefinePInvokeMethod (string name, string dllName, string entryName, MethodAttributes attributes, CallingConventions callingConvention, Type returnType, Type[] parameterTypes, CallingConvention nativeCallConv, CharSet nativeCharSet) {
 208                         if (name == null)
 209                                 throw new ArgumentNullException ("name");
 210                         if ((attributes & MethodAttributes.Static) == 0)
 211                                 throw new ArgumentException ("global methods must be static");
 212                         if (global_type_created != null)
 213                                 throw new InvalidOperationException ("global methods already created");
 214                         if (global_type == null)
 215                                 global_type = new TypeBuilder (this, 0);
 216                         MethodBuilder mb = global_type.DefinePInvokeMethod (name, dllName, entryName, attributes, callingConvention, returnType, parameterTypes, nativeCallConv, nativeCharSet);
 217
 218                         addGlobalMethod (mb);
 219                         return mb;
 220                 }
 221
 222                 public TypeBuilder DefineType (string name) {
 223                         return DefineType (name, 0);
 224                 }
 225
 226                 public TypeBuilder DefineType (string name, TypeAttributes attr) {
 227                         if ((attr & TypeAttributes.Interface) != 0)
 228                                 return DefineType (name, attr, null, null);
 229                         return DefineType (name, attr, typeof(object), null);
 230                 }
 231
 232                 public TypeBuilder DefineType (string name, TypeAttributes attr, Type parent) {
 233                         return DefineType (name, attr, parent, null);
 234                 }
 235
 236                 private void AddType (TypeBuilder tb)
 237                 {
 238                         if (types != null) {
 239                                 if (types.Length == num_types) {
 240                                         TypeBuilder[] new_types = new TypeBuilder [types.Length * 2];
 241                                         System.Array.Copy (types, new_types, num_types);
 242                                         types = new_types;
 243                                 }
 244                         } else {
 245                                 types = new TypeBuilder [1];
 246                         }
 247                         types [num_types] = tb;
 248                         num_types ++;
 249                 }
 250
 251                 private TypeBuilder DefineType (string name, TypeAttributes attr, Type parent, Type[] interfaces, PackingSize packsize, int typesize) {
 252                         if (name_cache.Contains (name))
 253                                 throw new ArgumentException ("Duplicate type name within an assembly.");
 254
 255                         TypeBuilder res = new TypeBuilder (this, name, attr, parent, interfaces, packsize, typesize, null);
 256                         AddType (res);
 257                         name_cache.Add (name, res);
 258                         return res;
 259                 }
 260
 261                 internal void RegisterTypeName (TypeBuilder tb, string name) {
 262                         name_cache.Add (name, tb);
 263                 }
 264
 265 #if NET_2_0
 266                 [ComVisible (true)]
 267 #endif
 268                 public TypeBuilder DefineType (string name, TypeAttributes attr, Type parent, Type[] interfaces) {
 269                         return DefineType (name, attr, parent, interfaces, PackingSize.Unspecified, TypeBuilder.UnspecifiedTypeSize);
 270                 }
 271
 272                 public TypeBuilder DefineType (string name, TypeAttributes attr, Type parent, int typesize) {
 273                         return DefineType (name, attr, parent, null, PackingSize.Unspecified, TypeBuilder.UnspecifiedTypeSize);
 274                 }
 275
 276                 public TypeBuilder DefineType (string name, TypeAttributes attr, Type parent, PackingSize packsize) {
 277                         return DefineType (name, attr, parent, null, packsize, TypeBuilder.UnspecifiedTypeSize);
 278                 }
 279
 280                 public TypeBuilder DefineType (string name, TypeAttributes attr, Type parent, PackingSize packsize, int typesize) {
 281                         return DefineType (name, attr, parent, null, packsize, typesize);
 282                 }
 283
 284                 public MethodInfo GetArrayMethod( Type arrayClass, string methodName, CallingConventions callingConvention, Type returnType, Type[] parameterTypes) {
 285                         return new MonoArrayMethod (arrayClass, methodName, callingConvention, returnType, parameterTypes);
 286                 }
 287
 288                 public EnumBuilder DefineEnum( string name, TypeAttributes visibility, Type underlyingType) {
 289                         if (name_cache.Contains (name))
 290                                 throw new ArgumentException ("Duplicate type name within an assembly.");
 291
 292                         EnumBuilder eb = new EnumBuilder (this, name, visibility, underlyingType);
 293                         TypeBuilder res = eb.GetTypeBuilder ();
 294                         AddType (res);
 295                         name_cache.Add (name, res);
 296                         return eb;
 297                 }
 298
 299 #if NET_2_0
 300                 [ComVisible (true)]
 301 #endif
 302                 public override Type GetType( string className) {
 303                         return GetType (className, false, false);
 304                 }
 305
 306 #if NET_2_0
 307                 [ComVisible (true)]
 308 #endif
 309                 public override Type GetType( string className, bool ignoreCase) {
 310                         return GetType (className, false, ignoreCase);
 311                 }
 312
 313                 private TypeBuilder search_in_array (TypeBuilder[] arr, int validElementsInArray, string className) {
 314                         int i;
 315                         for (i = 0; i < validElementsInArray; ++i) {
 316                                 if (String.Compare (className, arr [i].FullName, true, CultureInfo.InvariantCulture) == 0) {
 317                                         return arr [i];
 318                                 }
 319                         }
 320                         return null;
 321                 }
 322
 323                 private TypeBuilder search_nested_in_array (TypeBuilder[] arr, int validElementsInArray, string className) {
 324                         int i;
 325                         for (i = 0; i < validElementsInArray; ++i) {
 326                                 if (String.Compare (className, arr [i].Name, true, CultureInfo.InvariantCulture) == 0)
 327                                         return arr [i];
 328                         }
 329                         return null;
 330                 }
 331
 332                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 333                 private static extern Type create_modified_type (TypeBuilder tb, string modifiers);
 334
 335                 static readonly char [] type_modifiers = {'&', '[', '*'};
 336
 337                 private TypeBuilder GetMaybeNested (TypeBuilder t, string className) {
 338                         int subt;
 339                         string pname, rname;
 340
 341                         subt = className.IndexOf ('+');
 342                         if (subt < 0) {
 343                                 if (t.subtypes != null)
 344                                         return search_nested_in_array (t.subtypes, t.subtypes.Length, className);
 345                                 return null;
 346                         }
 347                         if (t.subtypes != null) {
 348                                 pname = className.Substring (0, subt);
 349                                 rname = className.Substring (subt + 1);
 350                                 TypeBuilder result = search_nested_in_array (t.subtypes, t.subtypes.Length, pname);
 351                                 if (result != null)
 352                                         return GetMaybeNested (result, rname);
 353                         }
 354                         return null;
 355                 }
 356
 357 #if NET_2_0
 358                 [ComVisible (true)]
 359 #endif
 360                 public override Type GetType (string className, bool throwOnError, bool ignoreCase) {
 361                         int subt;
 362                         string orig = className;
 363                         string modifiers;
 364                         TypeBuilder result = null;
 365
 366                         if (types == null && throwOnError)
 367                                 throw new TypeLoadException (className);
 368
 369                         subt = className.IndexOfAny (type_modifiers);
 370                         if (subt >= 0) {
 371                                 modifiers = className.Substring (subt);
 372                                 className = className.Substring (0, subt);
 373                         } else
 374                                 modifiers = null;
 375
 376                         if (!ignoreCase) {
 377                                 result =  name_cache [className] as TypeBuilder;
 378                         } else {
 379                                 subt = className.IndexOf ('+');
 380                                 if (subt < 0) {
 381                                         if (types != null)
 382                                                 result = search_in_array (types, num_types,  className);
 383                                 } else {
 384                                         string pname, rname;
 385                                         pname = className.Substring (0, subt);
 386                                         rname = className.Substring (subt + 1);
 387                                         result = search_in_array (types, num_types, pname);
 388                                         if (result != null)
 389                                                 result = GetMaybeNested (result, rname);
 390                                 }
 391                         }
 392                         if ((result == null) && throwOnError)
 393                                 throw new TypeLoadException (orig);
 394                         if (result != null && (modifiers != null)) {
 395                                 Type mt = create_modified_type (result, modifiers);
 396                                 if (mt is TypeBuilder)
 397                                         result = mt as TypeBuilder;
 398                                 else
 399                                         return mt;
 400                         }
 401                         if (result != null && result.is_created)
 402                                 return result.CreateType ();
 403                         else
 404                                 return result;
 405                 }
 406
 407                 internal int get_next_table_index (object obj, int table, bool inc) {
 408                         if (table_indexes == null) {
 409                                 table_indexes = new int [64];
 410                                 for (int i=0; i < 64; ++i)
 411                                         table_indexes [i] = 1;
 412                                 /* allow room for .<Module> in TypeDef table */
 413                                 table_indexes [0x02] = 2;
 414                         }
 415                         // Console.WriteLine ("getindex for table "+table.ToString()+" got "+table_indexes [table].ToString());
 416                         if (inc)
 417                                 return table_indexes [table]++;
 418                         return table_indexes [table];
 419                 }
 420
 421                 public void SetCustomAttribute( CustomAttributeBuilder customBuilder) {
 422                         if (cattrs != null) {
 423                                 CustomAttributeBuilder[] new_array = new CustomAttributeBuilder [cattrs.Length + 1];
 424                                 cattrs.CopyTo (new_array, 0);
 425                                 new_array [cattrs.Length] = customBuilder;
 426                                 cattrs = new_array;
 427                         } else {
 428                                 cattrs = new CustomAttributeBuilder [1];
 429                                 cattrs [0] = customBuilder;
 430                         }
 431                 }
 432
 433 #if NET_2_0
 434                 [ComVisible (true)]
 435 #endif
 436                 public void SetCustomAttribute( ConstructorInfo con, byte[] binaryAttribute) {
 437                         SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
 438                 }
 439
 440                 public ISymbolWriter GetSymWriter () {
 441                         return symbolWriter;
 442                 }
 443
 444                 public ISymbolDocumentWriter DefineDocument (string url, Guid language, Guid languageVendor, Guid documentType)
 445                 {
 446                         if (symbolWriter != null)
 447                                 return symbolWriter.DefineDocument (url, language, languageVendor, documentType);
 448                         else
 449                                 return null;
 450                 }
 451
 452                 public override Type [] GetTypes ()
 453                 {
 454                         if (types == null)
 455                                 return new TypeBuilder [0];
 456
 457                         int n = num_types;
 458                         TypeBuilder [] copy = new TypeBuilder [n];
 459                         Array.Copy (types, copy, n);
 460
 461                         return copy;
 462                 }
 463
 464                 public IResourceWriter DefineResource (string name, string description, ResourceAttributes attribute)
 465                 {
 466                         if (name == null)
 467                                 throw new ArgumentNullException ("name");
 468                         if (name == String.Empty)
 469                                 throw new ArgumentException ("name cannot be empty");
 470                         if (transient)
 471                                 throw new InvalidOperationException ("The module is transient");
 472                         if (!assemblyb.IsSave)
 473                                 throw new InvalidOperationException ("The assembly is transient");
 474                         ResourceWriter writer = new ResourceWriter (new MemoryStream ());
 475                         if (resource_writers == null)
 476                                 resource_writers = new Hashtable ();
 477                         resource_writers [name] = writer;
 478
 479                         // The data is filled out later
 480                         if (resources != null) {
 481                                 MonoResource[] new_r = new MonoResource [resources.Length + 1];
 482                                 System.Array.Copy(resources, new_r, resources.Length);
 483                                 resources = new_r;
 484                         } else {
 485                                 resources = new MonoResource [1];
 486                         }
 487                         int p = resources.Length - 1;
 488                         resources [p].name = name;
 489                         resources [p].attrs = attribute;
 490
 491                         return writer;
 492                 }
 493
 494                 public IResourceWriter DefineResource (string name, string description)
 495                 {
 496                         return DefineResource (name, description, ResourceAttributes.Public);
 497                 }
 498
 499                 [MonoTODO]
 500                 public void DefineUnmanagedResource (byte[] resource)
 501                 {
 502                         if (resource == null)
 503                                 throw new ArgumentNullException ("resource");
 504
 505                         throw new NotImplementedException ();
 506                 }
 507
 508                 [MonoTODO]
 509                 public void DefineUnmanagedResource (string resourceFileName)
 510                 {
 511                         if (resourceFileName == null)
 512                                 throw new ArgumentNullException ("resourceFileName");
 513                         if (resourceFileName == String.Empty)
 514                                 throw new ArgumentException ("resourceFileName");
 515                         if (!File.Exists (resourceFileName) || Directory.Exists (resourceFileName))
 516                                 throw new FileNotFoundException ("File '" + resourceFileName + "' does not exists or is a directory.");
 517
 518                         throw new NotImplementedException ();
 519                 }
 520
 521 #if NET_2_0
 522                 public void DefineManifestResource (string name, Stream stream, ResourceAttributes attribute) {
 523                         if (name == null)
 524                                 throw new ArgumentNullException ("name");
 525                         if (name == String.Empty)
 526                                 throw new ArgumentException ("name cannot be empty");
 527                         if (stream == null)
 528                                 throw new ArgumentNullException ("stream");
 529                         if (transient)
 530                                 throw new InvalidOperationException ("The module is transient");
 531                         if (!assemblyb.IsSave)
 532                                 throw new InvalidOperationException ("The assembly is transient");
 533
 534                         if (resources != null) {
 535                                 MonoResource[] new_r = new MonoResource [resources.Length + 1];
 536                                 System.Array.Copy(resources, new_r, resources.Length);
 537                                 resources = new_r;
 538                         } else {
 539                                 resources = new MonoResource [1];
 540                         }
 541                         int p = resources.Length - 1;
 542                         resources [p].name = name;
 543                         resources [p].attrs = attribute;
 544                         resources [p].stream = stream;
 545                 }
 546 #endif
 547
 548                 [MonoTODO]
 549                 public void SetSymCustomAttribute (string name, byte[] data)
 550                 {
 551                         throw new NotImplementedException ();
 552                 }
 553
 554                 [MonoTODO]
 555                 public void SetUserEntryPoint (MethodInfo entryPoint)
 556                 {
 557                         if (entryPoint == null)
 558                                 throw new ArgumentNullException ("entryPoint");
 559                         if (entryPoint.DeclaringType.Module != this)
 560                                 throw new InvalidOperationException ("entryPoint is not contained in this module");
 561                         throw new NotImplementedException ();
 562                 }
 563
 564                 public MethodToken GetMethodToken (MethodInfo method)
 565                 {
 566                         if (method == null)
 567                                 throw new ArgumentNullException ("method");
 568                         if (method.DeclaringType.Module != this)
 569                                 throw new InvalidOperationException ("The method is not in this module");
 570                         return new MethodToken (GetToken (method));
 571                 }
 572
 573                 public MethodToken GetArrayMethodToken (Type arrayClass, string methodName, CallingConventions callingConvention, Type returnType, Type[] parameterTypes)
 574                 {
 575                         return GetMethodToken (GetArrayMethod (arrayClass, methodName, callingConvention, returnType, parameterTypes));
 576                 }
 577
 578 #if NET_2_0
 579                 [ComVisible (true)]
 580 #endif
 581                 public MethodToken GetConstructorToken (ConstructorInfo con)
 582                 {
 583                         if (con == null)
 584                                 throw new ArgumentNullException ("con");
 585                         return new MethodToken (GetToken (con));
 586                 }
 587
 588                 public FieldToken GetFieldToken (FieldInfo field)
 589                 {
 590                         if (field == null)
 591                                 throw new ArgumentNullException ("field");
 592                         if (field.DeclaringType.Module != this)
 593                                 throw new InvalidOperationException ("The method is not in this module");
 594                         return new FieldToken (GetToken (field));
 595                 }
 596
 597                 [MonoTODO]
 598                 public SignatureToken GetSignatureToken (byte[] sigBytes, int sigLength)
 599                 {
 600                         throw new NotImplementedException ();
 601                 }
 602
 603                 public SignatureToken GetSignatureToken (SignatureHelper sigHelper)
 604                 {
 605                         if (sigHelper == null)
 606                                 throw new ArgumentNullException ("sigHelper");
 607                         return new SignatureToken (GetToken (sigHelper));
 608                 }
 609
 610                 public StringToken GetStringConstant (string str)
 611                 {
 612                         if (str == null)
 613                                 throw new ArgumentNullException ("str");
 614                         return new StringToken (GetToken (str));
 615                 }
 616
 617                 public TypeToken GetTypeToken (Type type)
 618                 {
 619                         if (type == null)
 620                                 throw new ArgumentNullException ("type");
 621                         if (type.IsByRef)
 622                                 throw new ArgumentException ("type can't be a byref type", "type");
 623                         if (!IsTransient () && (type.Module is ModuleBuilder) && ((ModuleBuilder)type.Module).IsTransient ())
 624                                 throw new InvalidOperationException ("a non-transient module can't reference a transient module");
 625                         return new TypeToken (GetToken (type));
 626                 }
 627
 628                 public TypeToken GetTypeToken (string type)
 629                 {
 630                         return GetTypeToken (GetType (name));
 631                 }
 632
 633                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 634                 private static extern int getUSIndex (ModuleBuilder mb, string str);
 635
 636                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 637                 private static extern int getToken (ModuleBuilder mb, object obj);
 638
 639                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 640                 private static extern int getMethodToken (ModuleBuilder mb, MethodInfo method,
 641                                                           Type[] opt_param_types);
 642
 643                 internal int GetToken (string str) {
 644                         if (us_string_cache.Contains (str))
 645                                 return (int)us_string_cache [str];
 646                         int result = getUSIndex (this, str);
 647                         us_string_cache [str] = result;
 648                         return result;
 649                 }
 650
 651                 internal int GetToken (MemberInfo member) {
 652                         return getToken (this, member);
 653                 }
 654
 655                 internal int GetToken (MethodInfo method, Type[] opt_param_types) {
 656                         return getMethodToken (this, method, opt_param_types);
 657                 }
 658
 659                 internal int GetToken (SignatureHelper helper) {
 660                         return getToken (this, helper);
 661                 }
 662
 663                 internal TokenGenerator GetTokenGenerator () {
 664                         if (token_gen == null)
 665                                 token_gen = new ModuleBuilderTokenGenerator (this);
 666                         return token_gen;
 667                 }
 668
 669                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 670                 private static extern void build_metadata (ModuleBuilder mb);
 671
 672                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 673                 private extern void WriteToFile (IntPtr handle);
 674
 675                 internal void Save ()
 676                 {
 677                         if (transient && !is_main)
 678                                 return;
 679
 680                         if (types != null) {
 681                                 for (int i = 0; i < num_types; ++i)
 682                                         if (!types [i].is_created)
 683                                                 throw new NotSupportedException ("Type '" + types [i].FullName + "' was not completed.");
 684                         }
 685
 686                         if ((global_type != null) && (global_type_created == null))
 687                                 global_type_created = global_type.CreateType ();
 688
 689                         if (resources != null) {
 690                                 for (int i = 0; i < resources.Length; ++i) {
 691                                         IResourceWriter rwriter;
 692                                         if (resource_writers != null && (rwriter = resource_writers [resources [i].name] as IResourceWriter) != null) {
 693                                                 ResourceWriter writer = (ResourceWriter)rwriter;
 694                                                 writer.Generate ();
 695                                                 MemoryStream mstream = (MemoryStream)writer.Stream;
 696                                                 resources [i].data = new byte [mstream.Length];
 697                                                 mstream.Seek (0, SeekOrigin.Begin);
 698                                                 mstream.Read (resources [i].data, 0, (int)mstream.Length);
 699                                                 continue;
 700                                         }
 701                                         Stream stream = resources [i].stream;
 702
 703                                         // According to MSDN docs, the stream is read during assembly save, not earlier
 704                                         if (stream != null) {
 705                                                 try {
 706                                                         long len = stream.Length;
 707                                                         resources [i].data = new byte [len];
 708                                                         stream.Seek (0, SeekOrigin.Begin);
 709                                                         stream.Read (resources [i].data, 0, (int)len);
 710                                                 } catch {
 711                                                         /* do something */
 712                                                 }
 713                                         }
 714                                 }
 715                         }
 716
 717                         build_metadata (this);
 718
 719                         string fileName = fqname;
 720                         if (assemblyb.AssemblyDir != null)
 721                                 fileName = Path.Combine (assemblyb.AssemblyDir, fileName);
 722
 723                         try {
 724                                 // We mmap the file, so unlink the previous version since it may be in use
 725                                 File.Delete (fileName);
 726                         } catch {
 727                                 // We can safely ignore
 728                         }
 729                         using (FileStream file = new FileStream (fileName, FileMode.Create, FileAccess.Write))
 730                                 WriteToFile (file.Handle);
 731
 732                         //
 733                         // The constant 0x80000000 is internal to Mono, it means `make executable'
 734                         //
 735                         File.SetAttributes (fileName, (FileAttributes) (unchecked ((int) 0x80000000)));
 736
 737                         if (types != null && symbolWriter != null) {
 738                                 for (int i = 0; i < num_types; ++i)
 739                                         types [i].GenerateDebugInfo (symbolWriter);
 740                                 symbolWriter.Close ();
 741                         }
 742                 }
 743
 744                 internal string FileName {
 745                         get {
 746                                 return fqname;
 747                         }
 748                 }
 749
 750                 internal bool IsMain {
 751                         set {
 752                                 is_main = value;
 753                         }
 754                 }
 755
 756                 internal void CreateGlobalType () {
 757                         if (global_type == null)
 758                                 global_type = new TypeBuilder (this, 0);
 759                 }
 760
 761                 internal static Guid Mono_GetGuid (ModuleBuilder mb)
 762                 {
 763                         return new Guid (mb.guid);
 764                 }
 765
 766                 void _ModuleBuilder.GetIDsOfNames ([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
 767                 {
 768                         throw new NotImplementedException ();
 769                 }
 770
 771                 void _ModuleBuilder.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
 772                 {
 773                         throw new NotImplementedException ();
 774                 }
 775
 776                 void _ModuleBuilder.GetTypeInfoCount (out uint pcTInfo)
 777                 {
 778                         throw new NotImplementedException ();
 779                 }
 780
 781                 void _ModuleBuilder.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams, IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
 782                 {
 783                         throw new NotImplementedException ();
 784                 }
 785         }
 786
 787         internal class ModuleBuilderTokenGenerator : TokenGenerator {
 788
 789                 private ModuleBuilder mb;
 790
 791                 public ModuleBuilderTokenGenerator (ModuleBuilder mb) {
 792                         this.mb = mb;
 793                 }
 794
 795                 public int GetToken (string str) {
 796                         return mb.GetToken (str);
 797                 }
 798
 799                 public int GetToken (MemberInfo member) {
 800                         return mb.GetToken (member);
 801                 }
 802
 803                 public int GetToken (MethodInfo method, Type[] opt_param_types) {
 804                         return mb.GetToken (method, opt_param_types);
 805                 }
 806
 807                 public int GetToken (SignatureHelper helper) {
 808                         return mb.GetToken (helper);
 809                 }
 810         }
 811 }
 812