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

   1 //
   2 // System.Reflection.Emit/AssemblyBuilder.cs
   3 //
   4 // Author:
   5 //   Paolo Molaro (lupus@ximian.com)
   6 //
   7 // (C) 2001 Ximian, Inc.  http://www.ximian.com
   8 //
   9
  10 //
  11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System;
  34 using System.Reflection;
  35 using System.Resources;
  36 using System.IO;
  37 using System.Security.Policy;
  38 using System.Runtime.Serialization;
  39 using System.Globalization;
  40 using System.Runtime.CompilerServices;
  41 using System.Collections;
  42 using System.Runtime.InteropServices;
  43 using System.Security;
  44 using System.Security.Cryptography;
  45 using System.Security.Permissions;
  46
  47 using Mono.Security;
  48 using Mono.Security.Cryptography;
  49
  50 namespace System.Reflection.Emit {
  51
  52         internal struct RefEmitPermissionSet {
  53                 public SecurityAction action;
  54                 public string pset;
  55
  56                 public RefEmitPermissionSet (SecurityAction action, string pset) {
  57                         this.action = action;
  58                         this.pset = pset;
  59                 }
  60         }
  61
  62         internal struct MonoResource {
  63                 public byte[] data;
  64                 public string name;
  65                 public string filename;
  66                 public ResourceAttributes attrs;
  67                 public int offset;
  68         }
  69
  70         internal struct MonoWin32Resource {
  71                 public int res_type;
  72                 public int res_id;
  73                 public int lang_id;
  74                 public byte[] data;
  75
  76                 public MonoWin32Resource (int res_type, int res_id, int lang_id, byte[] data) {
  77                         this.res_type = res_type;
  78                         this.res_id = res_id;
  79                         this.lang_id = lang_id;
  80                         this.data = data;
  81                 }
  82         }
  83
  84 #if NET_2_0
  85         [ComVisible (true)]
  86         [ClassInterfaceAttribute (ClassInterfaceType.None)]
  87         [ComDefaultInterfaceAttribute (typeof (_AssemblyBuilder))]
  88 #endif
  89         public sealed class AssemblyBuilder : Assembly {
  90                 #region Sync with reflection.h
  91                 private IntPtr dynamic_assembly;
  92                 private MethodInfo entry_point;
  93                 private ModuleBuilder[] modules;
  94                 private string name;
  95                 private string dir;
  96                 private CustomAttributeBuilder[] cattrs;
  97                 private MonoResource[] resources;
  98                 byte[] public_key;
  99                 string version;
 100                 string culture;
 101                 uint algid;
 102                 uint flags;
 103                 PEFileKinds pekind = PEFileKinds.Dll;
 104                 bool delay_sign;
 105                 uint access;
 106                 Module[] loaded_modules;
 107                 MonoWin32Resource[] win32_resources;
 108                 private RefEmitPermissionSet[] permissions_minimum;
 109                 private RefEmitPermissionSet[] permissions_optional;
 110                 private RefEmitPermissionSet[] permissions_refused;
 111                 PortableExecutableKinds peKind;
 112                 ImageFileMachine machine;
 113                 bool corlib_internal;
 114                 #endregion
 115                 internal Type corlib_object_type = typeof (System.Object);
 116                 internal Type corlib_value_type = typeof (System.ValueType);
 117                 internal Type corlib_enum_type = typeof (System.Enum);
 118                 internal Type corlib_void_type = typeof (void);
 119                 ArrayList resource_writers = null;
 120                 Win32VersionResource version_res;
 121                 bool created;
 122                 bool is_module_only;
 123                 private Mono.Security.StrongName sn;
 124
 125                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 126                 private static extern void basic_init (AssemblyBuilder ab);
 127
 128                 internal AssemblyBuilder (AssemblyName n, string directory, AssemblyBuilderAccess access, bool corlib_internal)
 129                 {
 130                         name = n.Name;
 131                         this.access = (uint)access;
 132
 133                         // don't call GetCurrentDirectory for Run-only builders (CAS may not like that)
 134                         if (IsSave && (directory == null || directory == String.Empty)) {
 135                                 dir = Directory.GetCurrentDirectory ();
 136                         } else {
 137                                 dir = directory;
 138                         }
 139
 140                         /* Set defaults from n */
 141                         if (n.CultureInfo != null) {
 142                                 culture = n.CultureInfo.Name;
 143                         }
 144                         Version v = n.Version;
 145                         if (v != null) {
 146                                 version = v.ToString ();
 147                         }
 148
 149                         if (n.KeyPair != null) {
 150                                 // full keypair is available (for signing)
 151                                 sn = n.KeyPair.StrongName ();
 152                         }
 153                         else {
 154                                 // public key is available (for delay-signing)
 155                                 byte[] pk = n.GetPublicKey ();
 156                                 if ((pk != null) && (pk.Length > 0)) {
 157                                         sn = new Mono.Security.StrongName (pk);
 158                                 }
 159                         }
 160
 161                         this.corlib_internal = corlib_internal;
 162
 163                         basic_init (this);
 164                 }
 165
 166                 public override string CodeBase {
 167                         get {
 168                                 throw not_supported ();
 169                         }
 170                 }
 171
 172                 public override MethodInfo EntryPoint {
 173                         get {
 174                                 return entry_point;
 175                         }
 176                 }
 177
 178                 public override string Location {
 179                         get {
 180                                 throw not_supported ();
 181                         }
 182                 }
 183
 184 #if NET_1_1
 185                 /* This is to keep signature compatibility with MS.NET */
 186                 public override string ImageRuntimeVersion {
 187                         get {
 188                                 return base.ImageRuntimeVersion;
 189                         }
 190                 }
 191 #endif
 192
 193                 public void AddResourceFile (string name, string fileName)
 194                 {
 195                         AddResourceFile (name, fileName, ResourceAttributes.Public);
 196                 }
 197
 198                 public void AddResourceFile (string name, string fileName, ResourceAttributes attribute)
 199                 {
 200                         AddResourceFile (name, fileName, attribute, true);
 201                 }
 202
 203                 private void AddResourceFile (string name, string fileName, ResourceAttributes attribute, bool fileNeedsToExists)
 204                 {
 205                         check_name_and_filename (name, fileName, fileNeedsToExists);
 206
 207                         // Resource files are created/searched under the assembly storage
 208                         // directory
 209                         if (dir != null)
 210                                 fileName = Path.Combine (dir, fileName);
 211
 212                         if (resources != null) {
 213                                 MonoResource[] new_r = new MonoResource [resources.Length + 1];
 214                                 System.Array.Copy(resources, new_r, resources.Length);
 215                                 resources = new_r;
 216                         } else {
 217                                 resources = new MonoResource [1];
 218                         }
 219                         int p = resources.Length - 1;
 220                         resources [p].name = name;
 221                         resources [p].filename = fileName;
 222                         resources [p].attrs = attribute;
 223                 }
 224
 225                 /// <summary>
 226                 /// Don't change the method name and parameters order. It is used by mcs
 227                 /// </summary>
 228                 internal void AddPermissionRequests (PermissionSet required, PermissionSet optional, PermissionSet refused)
 229                 {
 230                         if (created)
 231                                 throw new InvalidOperationException ("Assembly was already saved.");
 232
 233                         // required for base Assembly class (so the permissions
 234                         // can be used even if the assembly isn't saved to disk)
 235                         _minimum = required;
 236                         _optional = optional;
 237                         _refuse = refused;
 238
 239                         // required to reuse AddDeclarativeSecurity support
 240                         // already present in the runtime
 241                         if (required != null) {
 242                                 permissions_minimum = new RefEmitPermissionSet [1];
 243                                 permissions_minimum [0] = new RefEmitPermissionSet (
 244                                         SecurityAction.RequestMinimum, required.ToXml ().ToString ());
 245                         }
 246                         if (optional != null) {
 247                                 permissions_optional = new RefEmitPermissionSet [1];
 248                                 permissions_optional [0] = new RefEmitPermissionSet (
 249                                         SecurityAction.RequestOptional, optional.ToXml ().ToString ());
 250                         }
 251                         if (refused != null) {
 252                                 permissions_refused = new RefEmitPermissionSet [1];
 253                                 permissions_refused [0] = new RefEmitPermissionSet (
 254                                         SecurityAction.RequestRefuse, refused.ToXml ().ToString ());
 255                         }
 256                 }
 257
 258                 internal void EmbedResourceFile (string name, string fileName)
 259                 {
 260                         EmbedResourceFile (name, fileName, ResourceAttributes.Public);
 261                 }
 262
 263                 internal void EmbedResourceFile (string name, string fileName, ResourceAttributes attribute)
 264                 {
 265                         if (resources != null) {
 266                                 MonoResource[] new_r = new MonoResource [resources.Length + 1];
 267                                 System.Array.Copy(resources, new_r, resources.Length);
 268                                 resources = new_r;
 269                         } else {
 270                                 resources = new MonoResource [1];
 271                         }
 272                         int p = resources.Length - 1;
 273                         resources [p].name = name;
 274                         resources [p].attrs = attribute;
 275                         try {
 276                                 FileStream s = new FileStream (fileName, FileMode.Open, FileAccess.Read);
 277                                 long len = s.Length;
 278                                 resources [p].data = new byte [len];
 279                                 s.Read (resources [p].data, 0, (int)len);
 280                                 s.Close ();
 281                         } catch {
 282                                 /* do something */
 283                         }
 284                 }
 285
 286                 internal void EmbedResource (string name, byte[] blob, ResourceAttributes attribute)
 287                 {
 288                         if (resources != null) {
 289                                 MonoResource[] new_r = new MonoResource [resources.Length + 1];
 290                                 System.Array.Copy(resources, new_r, resources.Length);
 291                                 resources = new_r;
 292                         } else {
 293                                 resources = new MonoResource [1];
 294                         }
 295                         int p = resources.Length - 1;
 296                         resources [p].name = name;
 297                         resources [p].attrs = attribute;
 298                         resources [p].data = blob;
 299                 }
 300
 301                 public ModuleBuilder DefineDynamicModule (string name)
 302                 {
 303                         return DefineDynamicModule (name, name, false, true);
 304                 }
 305
 306                 public ModuleBuilder DefineDynamicModule (string name, bool emitSymbolInfo)
 307                 {
 308                         return DefineDynamicModule (name, name, emitSymbolInfo, true);
 309                 }
 310
 311                 public ModuleBuilder DefineDynamicModule(string name, string fileName)
 312                 {
 313                         return DefineDynamicModule (name, fileName, false, false);
 314                 }
 315
 316                 public ModuleBuilder DefineDynamicModule (string name, string fileName,
 317                                                           bool emitSymbolInfo)
 318                 {
 319                         return DefineDynamicModule (name, fileName, emitSymbolInfo, false);
 320                 }
 321
 322                 private ModuleBuilder DefineDynamicModule (string name, string fileName,
 323                                                                                                    bool emitSymbolInfo, bool transient)
 324                 {
 325                         check_name_and_filename (name, fileName, false);
 326
 327                         if (!transient) {
 328                                 if (Path.GetExtension (fileName) == String.Empty)
 329                                         throw new ArgumentException ("Module file name '" + fileName + "' must have file extension.");
 330                                 if (!IsSave)
 331                                         throw new NotSupportedException ("Persistable modules are not supported in a dynamic assembly created with AssemblyBuilderAccess.Run");
 332                                 if (created)
 333                                         throw new InvalidOperationException ("Assembly was already saved.");
 334                         }
 335
 336                         ModuleBuilder r = new ModuleBuilder (this, name, fileName, emitSymbolInfo, transient);
 337
 338                         if ((modules != null) && is_module_only)
 339                                 throw new InvalidOperationException ("A module-only assembly can only contain one module.");
 340
 341                         if (modules != null) {
 342                                 ModuleBuilder[] new_modules = new ModuleBuilder [modules.Length + 1];
 343                                 System.Array.Copy(modules, new_modules, modules.Length);
 344                                 modules = new_modules;
 345                         } else {
 346                                 modules = new ModuleBuilder [1];
 347                         }
 348                         modules [modules.Length - 1] = r;
 349                         return r;
 350                 }
 351
 352                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 353                 private extern Module InternalAddModule (string fileName);
 354
 355                 /*
 356                  * Mono extension to support /addmodule in mcs.
 357                  */
 358                 internal Module AddModule (string fileName)
 359                 {
 360                         if (fileName == null)
 361                                 throw new ArgumentNullException (fileName);
 362
 363                         Module m = InternalAddModule (fileName);
 364
 365                         if (loaded_modules != null) {
 366                                 Module[] new_modules = new Module [loaded_modules.Length + 1];
 367                                 System.Array.Copy (loaded_modules, new_modules, loaded_modules.Length);
 368                                 loaded_modules = new_modules;
 369                         } else {
 370                                 loaded_modules = new Module [1];
 371                         }
 372                         loaded_modules [loaded_modules.Length - 1] = m;
 373
 374                         return m;
 375                 }
 376
 377                 public IResourceWriter DefineResource (string name, string description, string fileName)
 378                 {
 379                         return DefineResource (name, description, fileName, ResourceAttributes.Public);
 380                 }
 381
 382                 public IResourceWriter DefineResource (string name, string description,
 383                                                        string fileName, ResourceAttributes attribute)
 384                 {
 385                         IResourceWriter writer;
 386
 387                         // description seems to be ignored
 388                         AddResourceFile (name, fileName, attribute, false);
 389                         writer = new ResourceWriter (fileName);
 390                         if (resource_writers == null)
 391                                 resource_writers = new ArrayList ();
 392                         resource_writers.Add (writer);
 393                         return writer;
 394                 }
 395
 396                 private void AddUnmanagedResource (Win32Resource res) {
 397                         MemoryStream ms = new MemoryStream ();
 398                         res.WriteTo (ms);
 399
 400                         if (win32_resources != null) {
 401                                 MonoWin32Resource[] new_res = new MonoWin32Resource [win32_resources.Length + 1];
 402                                 System.Array.Copy (win32_resources, new_res, win32_resources.Length);
 403                                 win32_resources = new_res;
 404                         }
 405                         else
 406                                 win32_resources = new MonoWin32Resource [1];
 407
 408                         win32_resources [win32_resources.Length - 1] = new MonoWin32Resource (res.Type.Id, res.Name.Id, res.Language, ms.ToArray ());
 409                 }
 410
 411                 [MonoTODO]
 412                 public void DefineUnmanagedResource (byte[] resource)
 413                 {
 414                         if (resource == null)
 415                                 throw new ArgumentNullException ("resource");
 416
 417                         /*
 418                          * The format of the argument byte array is not documented
 419                          * so this method is impossible to implement.
 420                          */
 421
 422                         throw new NotImplementedException ();
 423                 }
 424
 425                 public void DefineUnmanagedResource (string resourceFileName)
 426                 {
 427                         if (resourceFileName == null)
 428                                 throw new ArgumentNullException ("resourceFileName");
 429                         if (resourceFileName == String.Empty)
 430                                 throw new ArgumentException ("resourceFileName");
 431                         if (!File.Exists (resourceFileName) || Directory.Exists (resourceFileName))
 432                                 throw new FileNotFoundException ("File '" + resourceFileName + "' does not exists or is a directory.");
 433
 434                         using (FileStream fs = new FileStream (resourceFileName, FileMode.Open)) {
 435                                 Win32ResFileReader reader = new Win32ResFileReader (fs);
 436
 437                                 foreach (Win32EncodedResource res in reader.ReadResources ()) {
 438                                         if (res.Name.IsName || res.Type.IsName)
 439                                                 throw new InvalidOperationException ("resource files with named resources or non-default resource types are not supported.");
 440
 441                                         AddUnmanagedResource (res);
 442                                 }
 443                         }
 444                 }
 445
 446                 public void DefineVersionInfoResource ()
 447                 {
 448                         if (version_res != null)
 449                                 throw new ArgumentException ("Native resource has already been defined.");
 450
 451                         version_res = new Win32VersionResource (1, 0);
 452
 453                         if (cattrs != null) {
 454                                 foreach (CustomAttributeBuilder cb in cattrs) {
 455                                         string attrname = cb.Ctor.ReflectedType.FullName;
 456
 457                                         if (attrname == "System.Reflection.AssemblyProductAttribute")
 458                                                 version_res.ProductName = cb.string_arg ();
 459                                         else if (attrname == "System.Reflection.AssemblyCompanyAttribute")
 460                                                 version_res.CompanyName = cb.string_arg ();
 461                                         else if (attrname == "System.Reflection.AssemblyCopyrightAttribute")
 462                                                 version_res.LegalCopyright = cb.string_arg ();
 463                                         else if (attrname == "System.Reflection.AssemblyTrademarkAttribute")
 464                                                 version_res.LegalTrademarks = cb.string_arg ();
 465                                         else if (attrname == "System.Reflection.AssemblyCultureAttribute")
 466                                                 version_res.FileLanguage = new CultureInfo (GetCultureString (cb.string_arg ())).LCID;
 467                                         else if (attrname == "System.Reflection.AssemblyFileVersionAttribute")
 468                                                 version_res.FileVersion = cb.string_arg ();
 469                                         else if (attrname == "System.Reflection.AssemblyInformationalVersionAttribute")
 470                                                 version_res.ProductVersion = cb.string_arg ();
 471                                         else if (attrname == "System.Reflection.AssemblyTitleAttribute")
 472                                                 version_res.FileDescription = cb.string_arg ();
 473                                         else if (attrname == "System.Reflection.AssemblyDescriptionAttribute")
 474                                                 version_res.Comments = cb.string_arg ();
 475                                 }
 476                         }
 477                 }
 478
 479                 public void DefineVersionInfoResource (string product, string productVersion,
 480                                                        string company, string copyright, string trademark)
 481                 {
 482                         if (version_res != null)
 483                                 throw new ArgumentException ("Native resource has already been defined.");
 484
 485                         /*
 486                          * We can only create the resource later, when the file name and
 487                          * the binary version is known.
 488                          */
 489
 490                         version_res = new Win32VersionResource (1, 0);
 491                         version_res.ProductName = product;
 492                         version_res.ProductVersion = productVersion;
 493                         version_res.CompanyName = company;
 494                         version_res.LegalCopyright = copyright;
 495                         version_res.LegalTrademarks = trademark;
 496                 }
 497
 498                 /*
 499                  * Mono extension to support /win32icon in mcs
 500                  */
 501                 internal void DefineIconResource (string iconFileName)
 502                 {
 503                         if (iconFileName == null)
 504                                 throw new ArgumentNullException ("iconFileName");
 505                         if (iconFileName == String.Empty)
 506                                 throw new ArgumentException ("iconFileName");
 507                         if (!File.Exists (iconFileName) || Directory.Exists (iconFileName))
 508                                 throw new FileNotFoundException ("File '" + iconFileName + "' does not exists or is a directory.");
 509
 510                         using (FileStream fs = new FileStream (iconFileName, FileMode.Open)) {
 511                                 Win32IconFileReader reader = new Win32IconFileReader (fs);
 512
 513                                 ICONDIRENTRY[] entries = reader.ReadIcons ();
 514
 515                                 Win32IconResource[] icons = new Win32IconResource [entries.Length];
 516                                 for (int i = 0; i < entries.Length; ++i) {
 517                                         icons [i] = new Win32IconResource (i + 1, 0, entries [i]);
 518                                         AddUnmanagedResource (icons [i]);
 519                                 }
 520
 521                                 Win32GroupIconResource group = new Win32GroupIconResource (1, 0, icons);
 522                                 AddUnmanagedResource (group);
 523                         }
 524                 }
 525
 526                 private void DefineVersionInfoResourceImpl (string fileName) {
 527                         // Add missing info
 528                         if (version_res.FileVersion == "0.0.0.0")
 529                                 version_res.FileVersion = version;
 530                         version_res.InternalName = Path.GetFileNameWithoutExtension (fileName);
 531                         version_res.OriginalFilename = fileName;
 532
 533                         AddUnmanagedResource (version_res);
 534                 }
 535
 536                 public ModuleBuilder GetDynamicModule (string name)
 537                 {
 538                         if (name == null)
 539                                 throw new ArgumentNullException ("name");
 540                         if (name == "")
 541                                 throw new ArgumentException ("Name can't be null");
 542
 543                         if (modules != null)
 544                                 for (int i = 0; i < modules.Length; ++i)
 545                                         if (modules [i].name == name)
 546                                                 return modules [i];
 547                         return null;
 548                 }
 549
 550                 public override Type[] GetExportedTypes ()
 551                 {
 552                         throw not_supported ();
 553                 }
 554
 555                 public override FileStream GetFile (string name)
 556                 {
 557                         throw not_supported ();
 558                 }
 559
 560                 public override FileStream[] GetFiles(bool getResourceModules) {
 561                         throw not_supported ();
 562                 }
 563
 564                 public override ManifestResourceInfo GetManifestResourceInfo(string resourceName) {
 565                         throw not_supported ();
 566                 }
 567
 568                 public override string[] GetManifestResourceNames() {
 569                         throw not_supported ();
 570                 }
 571
 572                 public override Stream GetManifestResourceStream(string name) {
 573                         throw not_supported ();
 574                 }
 575                 public override Stream GetManifestResourceStream(Type type, string name) {
 576                         throw not_supported ();
 577                 }
 578
 579                 internal bool IsSave {
 580                         get {
 581                                 return access != (uint)AssemblyBuilderAccess.Run;
 582                         }
 583                 }
 584
 585                 internal string AssemblyDir {
 586                         get {
 587                                 return dir;
 588                         }
 589                 }
 590
 591                 /*
 592                  * Mono extension. If this is set, the assembly can only contain one
 593                  * module, access should be Save, and the saved image will not contain an
 594                  * assembly manifest.
 595                  */
 596                 internal bool IsModuleOnly {
 597                         get {
 598                                 return is_module_only;
 599                         }
 600                         set {
 601                                 is_module_only = value;
 602                         }
 603                 }
 604
 605 #if NET_2_0
 606                 public
 607 #else
 608                 internal
 609 #endif
 610                 void Save (string assemblyFileName, PortableExecutableKinds portableExecutableKind, ImageFileMachine imageFileMachine)
 611                 {
 612                         this.peKind = portableExecutableKind;
 613                         this.machine = imageFileMachine;
 614
 615                         if (resource_writers != null) {
 616                                 foreach (IResourceWriter writer in resource_writers) {
 617                                         writer.Generate ();
 618                                         writer.Close ();
 619                                 }
 620                         }
 621
 622                         // Create a main module if not already created
 623                         ModuleBuilder mainModule = null;
 624                         if (modules != null) {
 625                                 foreach (ModuleBuilder module in modules)
 626                                         if (module.FullyQualifiedName == assemblyFileName)
 627                                                 mainModule = module;
 628                         }
 629                         if (mainModule == null)
 630                                 mainModule = DefineDynamicModule ("RefEmit_OnDiskManifestModule", assemblyFileName);
 631
 632                         if (!is_module_only)
 633                                 mainModule.IsMain = true;
 634
 635                         /*
 636                          * Create a new entry point if the one specified
 637                          * by the user is in another module.
 638                          */
 639                         if ((entry_point != null) && entry_point.DeclaringType.Module != mainModule) {
 640                                 Type[] paramTypes;
 641                                 if (entry_point.GetParameters ().Length == 1)
 642                                         paramTypes = new Type [] { typeof (string) };
 643                                 else
 644                                         paramTypes = new Type [0];
 645
 646                                 MethodBuilder mb = mainModule.DefineGlobalMethod ("__EntryPoint$", MethodAttributes.Static|MethodAttributes.PrivateScope, entry_point.ReturnType, paramTypes);
 647                                 ILGenerator ilgen = mb.GetILGenerator ();
 648                                 if (paramTypes.Length == 1)
 649                                         ilgen.Emit (OpCodes.Ldarg_0);
 650                                 ilgen.Emit (OpCodes.Tailcall);
 651                                 ilgen.Emit (OpCodes.Call, entry_point);
 652                                 ilgen.Emit (OpCodes.Ret);
 653
 654                                 entry_point = mb;
 655                         }
 656
 657                         if (version_res != null)
 658                                 DefineVersionInfoResourceImpl (assemblyFileName);
 659
 660                         if (sn != null) {
 661                                 // runtime needs to value to embed it into the assembly
 662                                 public_key = sn.PublicKey;
 663                         }
 664
 665                         foreach (ModuleBuilder module in modules)
 666                                 if (module != mainModule)
 667                                         module.Save ();
 668
 669                         // Write out the main module at the end, because it needs to
 670                         // contain the hash of the other modules
 671                         mainModule.Save ();
 672
 673                         if ((sn != null) && (sn.CanSign)) {
 674                                 sn.Sign (System.IO.Path.Combine (this.AssemblyDir, assemblyFileName));
 675                         }
 676
 677                         created = true;
 678                 }
 679
 680                 public void Save (string assemblyFileName)
 681                 {
 682                         Save (assemblyFileName, PortableExecutableKinds.ILOnly, ImageFileMachine.I386);
 683                 }
 684
 685                 public void SetEntryPoint (MethodInfo entryMethod)
 686                 {
 687                         SetEntryPoint (entryMethod, PEFileKinds.ConsoleApplication);
 688                 }
 689
 690                 public void SetEntryPoint (MethodInfo entryMethod, PEFileKinds fileKind)
 691                 {
 692                         if (entryMethod == null)
 693                                 throw new ArgumentNullException ("entryMethod");
 694                         if (entryMethod.DeclaringType.Assembly != this)
 695                                 throw new InvalidOperationException ("Entry method is not defined in the same assembly.");
 696
 697                         entry_point = entryMethod;
 698                         pekind = fileKind;
 699                 }
 700
 701                 public void SetCustomAttribute( CustomAttributeBuilder customBuilder)
 702                 {
 703                         if (customBuilder == null)
 704                                 throw new ArgumentNullException ("customBuilder");
 705
 706                         string attrname = customBuilder.Ctor.ReflectedType.FullName;
 707                         byte[] data;
 708                         int pos;
 709
 710                         if (attrname == "System.Reflection.AssemblyVersionAttribute") {
 711                                 version = create_assembly_version (customBuilder.string_arg ());
 712                                 return;
 713                         } else if (attrname == "System.Reflection.AssemblyCultureAttribute") {
 714                                 culture = GetCultureString (customBuilder.string_arg ());
 715                         } else if (attrname == "System.Reflection.AssemblyAlgorithmIdAttribute") {
 716                                 data = customBuilder.Data;
 717                                 pos = 2;
 718                                 algid = (uint)data [pos];
 719                                 algid |= ((uint)data [pos + 1]) << 8;
 720                                 algid |= ((uint)data [pos + 2]) << 16;
 721                                 algid |= ((uint)data [pos + 3]) << 24;
 722                         } else if (attrname == "System.Reflection.AssemblyFlagsAttribute") {
 723                                 data = customBuilder.Data;
 724                                 pos = 2;
 725                                 flags = (uint)data [pos];
 726                                 flags |= ((uint)data [pos + 1]) << 8;
 727                                 flags |= ((uint)data [pos + 2]) << 16;
 728                                 flags |= ((uint)data [pos + 3]) << 24;
 729                                 return;
 730                         }
 731
 732                         if (cattrs != null) {
 733                                 CustomAttributeBuilder[] new_array = new CustomAttributeBuilder [cattrs.Length + 1];
 734                                 cattrs.CopyTo (new_array, 0);
 735                                 new_array [cattrs.Length] = customBuilder;
 736                                 cattrs = new_array;
 737                         } else {
 738                                 cattrs = new CustomAttributeBuilder [1];
 739                                 cattrs [0] = customBuilder;
 740                         }
 741                 }
 742
 743 #if NET_2_0
 744                 [ComVisible (true)]
 745 #endif
 746                 public void SetCustomAttribute ( ConstructorInfo con, byte[] binaryAttribute) {
 747                         if (con == null)
 748                                 throw new ArgumentNullException ("con");
 749                         if (binaryAttribute == null)
 750                                 throw new ArgumentNullException ("binaryAttribute");
 751
 752                         SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
 753                 }
 754
 755                 internal void SetCorlibTypeBuilders (Type corlib_object_type, Type corlib_value_type, Type corlib_enum_type) {
 756                         this.corlib_object_type = corlib_object_type;
 757                         this.corlib_value_type = corlib_value_type;
 758                         this.corlib_enum_type = corlib_enum_type;
 759                 }
 760
 761                 internal void SetCorlibTypeBuilders (Type corlib_object_type, Type corlib_value_type, Type corlib_enum_type, Type corlib_void_type)
 762                 {
 763                         SetCorlibTypeBuilders (corlib_object_type, corlib_value_type, corlib_enum_type);
 764                         this.corlib_void_type = corlib_void_type;
 765                 }
 766
 767                 private Exception not_supported () {
 768                         // Strange message but this is what MS.NET prints...
 769                         return new NotSupportedException ("The invoked member is not supported in a dynamic module.");
 770                 }
 771
 772                 private void check_name_and_filename (string name, string fileName,
 773                                                                                           bool fileNeedsToExists) {
 774                         if (name == null)
 775                                 throw new ArgumentNullException ("name");
 776                         if (fileName == null)
 777                                 throw new ArgumentNullException ("fileName");
 778                         if (name == "")
 779                                 throw new ArgumentException ("name cannot be empty", "name");
 780                         if (fileName == "")
 781                                 throw new ArgumentException ("fileName cannot be empty", "fileName");
 782                         if (Path.GetFileName (fileName) != fileName)
 783                                 throw new ArgumentException ("fileName '" + fileName + "' must not include a path.");
 784
 785                         // Resource files are created/searched under the assembly storage
 786                         // directory
 787                         string fullFileName = fileName;
 788                         if (dir != null)
 789                                 fullFileName = Path.Combine (dir, fileName);
 790
 791                         if (fileNeedsToExists && !File.Exists (fullFileName))
 792                                 throw new FileNotFoundException ("Could not find file '" + fileName + "'");
 793
 794                         if (resources != null) {
 795                                 for (int i = 0; i < resources.Length; ++i) {
 796                                         if (resources [i].filename == fullFileName)
 797                                                 throw new ArgumentException ("Duplicate file name '" + fileName + "'");
 798                                         if (resources [i].name == name)
 799                                                 throw new ArgumentException ("Duplicate name '" + name + "'");
 800                                 }
 801                         }
 802
 803                         if (modules != null) {
 804                                 for (int i = 0; i < modules.Length; ++i) {
 805                                         // Use fileName instead of fullFileName here
 806                                         if (!modules [i].IsTransient () && (modules [i].FileName == fileName))
 807                                                 throw new ArgumentException ("Duplicate file name '" + fileName + "'");
 808                                         if (modules [i].Name == name)
 809                                                 throw new ArgumentException ("Duplicate name '" + name + "'");
 810                                 }
 811                         }
 812                 }
 813
 814                 private String create_assembly_version (String version) {
 815                         String[] parts = version.Split ('.');
 816                         int[] ver = new int [4] { 0, 0, 0, 0 };
 817
 818                         if ((parts.Length < 0) || (parts.Length > 4))
 819                                 throw new ArgumentException ("The version specified '" + version + "' is invalid");
 820
 821                         for (int i = 0; i < parts.Length; ++i) {
 822                                 if (parts [i] == "*") {
 823                                         DateTime now = DateTime.Now;
 824
 825                                         if (i == 2) {
 826                                                 ver [2] = (now - new DateTime (2000, 1, 1)).Days;
 827                                                 if (parts.Length == 3)
 828                                                         ver [3] = (now.Second + (now.Minute * 60) + (now.Hour * 3600)) / 2;
 829                                         }
 830                                         else
 831                                                 if (i == 3)
 832                                                         ver [3] = (now.Second + (now.Minute * 60) + (now.Hour * 3600)) / 2;
 833                                         else
 834                                                 throw new ArgumentException ("The version specified '" + version + "' is invalid");
 835                                 }
 836                                 else {
 837                                         try {
 838                                                 ver [i] = Int32.Parse (parts [i]);
 839                                         }
 840                                         catch (FormatException) {
 841                                                 throw new ArgumentException ("The version specified '" + version + "' is invalid");
 842                                         }
 843                                 }
 844                         }
 845
 846                         return ver [0] + "." + ver [1] + "." + ver [2] + "." + ver [3];
 847                 }
 848
 849                 private string GetCultureString (string str)
 850                 {
 851                         return (str == "neutral" ? String.Empty : str);
 852                 }
 853         }
 854 }