mcs/mcs/assembly.cs

   1 //
   2 // assembly.cs: Assembly declaration and specifications
   3 //
   4 // Authors:
   5 //   Miguel de Icaza (miguel@ximian.com)
   6 //   Marek Safar (marek.safar@gmail.com)
   7 //
   8 // Copyright 2001, 2002, 2003 Ximian, Inc.
   9 // Copyright 2004-2011 Novell, Inc.
  10 // Copyright 2011-2013 Xamarin Inc
  11 //
  12
  13
  14 using System;
  15 using System.IO;
  16 using System.Collections.Generic;
  17 using System.Globalization;
  18 using System.Security;
  19 using System.Security.Cryptography;
  20 using System.Security.Permissions;
  21 using Mono.Security.Cryptography;
  22 using Mono.CompilerServices.SymbolWriter;
  23
  24 #if STATIC
  25 using IKVM.Reflection;
  26 using IKVM.Reflection.Emit;
  27 using SecurityType = System.Collections.Generic.List<IKVM.Reflection.Emit.CustomAttributeBuilder>;
  28 #else
  29 using SecurityType = System.Collections.Generic.Dictionary<System.Security.Permissions.SecurityAction, System.Security.PermissionSet>;
  30 using System.Reflection;
  31 using System.Reflection.Emit;
  32 #endif
  33
  34 namespace Mono.CSharp
  35 {
  36         public interface IAssemblyDefinition
  37         {
  38                 string FullName { get; }
  39                 bool IsCLSCompliant { get; }
  40                 bool IsMissing { get; }
  41                 string Name { get; }
  42
  43                 byte[] GetPublicKeyToken ();
  44                 bool IsFriendAssemblyTo (IAssemblyDefinition assembly);
  45         }
  46
  47         public abstract class AssemblyDefinition : IAssemblyDefinition
  48         {
  49                 // TODO: make it private and move all builder based methods here
  50                 public AssemblyBuilder Builder;
  51                 protected AssemblyBuilderExtension builder_extra;
  52                 MonoSymbolFile symbol_writer;
  53
  54                 bool is_cls_compliant;
  55                 bool wrap_non_exception_throws;
  56                 bool wrap_non_exception_throws_custom;
  57                 bool has_user_debuggable;
  58
  59                 protected ModuleContainer module;
  60                 readonly string name;
  61                 protected readonly string file_name;
  62
  63                 byte[] public_key, public_key_token;
  64                 bool delay_sign;
  65
  66                 // Holds private/public key pair when private key
  67                 // was available
  68                 StrongNameKeyPair private_key;
  69
  70                 Attribute cls_attribute;
  71                 Method entry_point;
  72
  73                 protected List<ImportedModuleDefinition> added_modules;
  74                 SecurityType declarative_security;
  75                 Dictionary<ITypeDefinition, Attribute> emitted_forwarders;
  76                 AssemblyAttributesPlaceholder module_target_attrs;
  77
  78                 // Win32 version info values
  79                 string vi_product, vi_product_version, vi_company, vi_copyright, vi_trademark;
  80
  81                 protected AssemblyDefinition (ModuleContainer module, string name)
  82                 {
  83                         this.module = module;
  84                         this.name = Path.GetFileNameWithoutExtension (name);
  85
  86                         wrap_non_exception_throws = true;
  87
  88                         delay_sign = Compiler.Settings.StrongNameDelaySign;
  89
  90                         //
  91                         // Load strong name key early enough for assembly importer to be able to
  92                         // use the keys for InternalsVisibleTo
  93                         // This should go somewhere close to ReferencesLoading but don't have the place yet
  94                         //
  95                         if (Compiler.Settings.HasKeyFileOrContainer) {
  96                                 LoadPublicKey (Compiler.Settings.StrongNameKeyFile, Compiler.Settings.StrongNameKeyContainer);
  97                         }
  98                 }
  99
 100                 protected AssemblyDefinition (ModuleContainer module, string name, string fileName)
 101                         : this (module, name)
 102                 {
 103                         this.file_name = fileName;
 104                 }
 105
 106                 #region Properties
 107
 108                 public Attribute CLSCompliantAttribute {
 109                         get {
 110                                 return cls_attribute;
 111                         }
 112                 }
 113
 114                 public CompilerContext Compiler {
 115                         get {
 116                                 return module.Compiler;
 117                         }
 118                 }
 119
 120                 //
 121                 // Assembly entry point, aka Main method
 122                 //
 123                 public Method EntryPoint {
 124                         get {
 125                                 return entry_point;
 126                         }
 127                         set {
 128                                 entry_point = value;
 129                         }
 130                 }
 131
 132                 public string FullName {
 133                         get {
 134                                 return Builder.FullName;
 135                         }
 136                 }
 137
 138                 public bool HasCLSCompliantAttribute {
 139                         get {
 140                                 return cls_attribute != null;
 141                         }
 142                 }
 143
 144                 // TODO: This should not exist here but will require more changes
 145                 public MetadataImporter Importer {
 146                     get; set;
 147                 }
 148
 149                 public bool IsCLSCompliant {
 150                         get {
 151                                 return is_cls_compliant;
 152                         }
 153                 }
 154
 155                 bool IAssemblyDefinition.IsMissing {
 156                         get {
 157                                 return false;
 158                         }
 159                 }
 160
 161                 public bool IsSatelliteAssembly { get; private set; }
 162
 163                 public string Name {
 164                         get {
 165                                 return name;
 166                         }
 167                 }
 168
 169                 public bool WrapNonExceptionThrows {
 170                         get {
 171                                 return wrap_non_exception_throws;
 172                         }
 173                 }
 174
 175                 protected Report Report {
 176                         get {
 177                                 return Compiler.Report;
 178                         }
 179                 }
 180
 181                 public MonoSymbolFile SymbolWriter {
 182                         get {
 183                                 return symbol_writer;
 184                         }
 185                 }
 186
 187                 #endregion
 188
 189                 public void AddModule (ImportedModuleDefinition module)
 190                 {
 191                         if (added_modules == null) {
 192                                 added_modules = new List<ImportedModuleDefinition> ();
 193                                 added_modules.Add (module);
 194                         }
 195                 }
 196
 197                 public void ApplyAttributeBuilder (Attribute a, MethodSpec ctor, byte[] cdata, PredefinedAttributes pa)
 198                 {
 199                         if (a.IsValidSecurityAttribute ()) {
 200                                 a.ExtractSecurityPermissionSet (ctor, ref declarative_security);
 201                                 return;
 202                         }
 203
 204                         if (a.Type == pa.AssemblyCulture) {
 205                                 string value = a.GetString ();
 206                                 if (value == null || value.Length == 0)
 207                                         return;
 208
 209                                 if (Compiler.Settings.Target == Target.Exe) {
 210                                         Report.Error (7059, a.Location, "Executables cannot be satellite assemblies. Remove the attribute or keep it empty");
 211                                         return;
 212                                 }
 213
 214                                 if (value == "neutral")
 215                                         value = "";
 216
 217                                 if (Compiler.Settings.Target == Target.Module) {
 218                                         SetCustomAttribute (ctor, cdata);
 219                                 } else {
 220                                         builder_extra.SetCulture (value, a.Location);
 221                                 }
 222
 223                                 IsSatelliteAssembly = true;
 224                                 return;
 225                         }
 226
 227                         if (a.Type == pa.AssemblyVersion) {
 228                                 string value = a.GetString ();
 229                                 if (value == null || value.Length == 0)
 230                                         return;
 231
 232                                 var vinfo = IsValidAssemblyVersion (value, true);
 233                                 if (vinfo == null) {
 234                                         Report.Error (7034, a.Location, "The specified version string `{0}' does not conform to the required format - major[.minor[.build[.revision]]]",
 235                                                 value);
 236                                         return;
 237                                 }
 238
 239                                 if (Compiler.Settings.Target == Target.Module) {
 240                                         SetCustomAttribute (ctor, cdata);
 241                                 } else {
 242                                         builder_extra.SetVersion (vinfo, a.Location);
 243                                 }
 244
 245                                 return;
 246                         }
 247
 248                         if (a.Type == pa.AssemblyAlgorithmId) {
 249                                 const int pos = 2; // skip CA header
 250                                 uint alg = (uint) cdata [pos];
 251                                 alg |= ((uint) cdata [pos + 1]) << 8;
 252                                 alg |= ((uint) cdata [pos + 2]) << 16;
 253                                 alg |= ((uint) cdata [pos + 3]) << 24;
 254
 255                                 if (Compiler.Settings.Target == Target.Module) {
 256                                         SetCustomAttribute (ctor, cdata);
 257                                 } else {
 258                                         builder_extra.SetAlgorithmId (alg, a.Location);
 259                                 }
 260
 261                                 return;
 262                         }
 263
 264                         if (a.Type == pa.AssemblyFlags) {
 265                                 const int pos = 2; // skip CA header
 266                                 uint flags = (uint) cdata[pos];
 267                                 flags |= ((uint) cdata [pos + 1]) << 8;
 268                                 flags |= ((uint) cdata [pos + 2]) << 16;
 269                                 flags |= ((uint) cdata [pos + 3]) << 24;
 270
 271                                 // Ignore set PublicKey flag if assembly is not strongnamed
 272                                 if ((flags & (uint) AssemblyNameFlags.PublicKey) != 0 && public_key == null)
 273                                         flags &= ~(uint) AssemblyNameFlags.PublicKey;
 274
 275                                 if (Compiler.Settings.Target == Target.Module) {
 276                                         SetCustomAttribute (ctor, cdata);
 277                                 } else {
 278                                         builder_extra.SetFlags (flags, a.Location);
 279                                 }
 280
 281                                 return;
 282                         }
 283
 284                         if (a.Type == pa.TypeForwarder) {
 285                                 TypeSpec t = a.GetArgumentType ();
 286                                 if (t == null || TypeManager.HasElementType (t)) {
 287                                         Report.Error (735, a.Location, "Invalid type specified as an argument for TypeForwardedTo attribute");
 288                                         return;
 289                                 }
 290
 291                                 if (emitted_forwarders == null) {
 292                                         emitted_forwarders = new Dictionary<ITypeDefinition, Attribute> ();
 293                                 } else if (emitted_forwarders.ContainsKey (t.MemberDefinition)) {
 294                                         Report.SymbolRelatedToPreviousError (emitted_forwarders[t.MemberDefinition].Location, null);
 295                                         Report.Error (739, a.Location, "A duplicate type forward of type `{0}'",
 296                                                 t.GetSignatureForError ());
 297                                         return;
 298                                 }
 299
 300                                 emitted_forwarders.Add (t.MemberDefinition, a);
 301
 302                                 if (t.MemberDefinition.DeclaringAssembly == this) {
 303                                         Report.SymbolRelatedToPreviousError (t);
 304                                         Report.Error (729, a.Location, "Cannot forward type `{0}' because it is defined in this assembly",
 305                                                 t.GetSignatureForError ());
 306                                         return;
 307                                 }
 308
 309                                 if (t.IsNested) {
 310                                         Report.Error (730, a.Location, "Cannot forward type `{0}' because it is a nested type",
 311                                                 t.GetSignatureForError ());
 312                                         return;
 313                                 }
 314
 315                                 builder_extra.AddTypeForwarder (t.GetDefinition (), a.Location);
 316                                 return;
 317                         }
 318
 319                         if (a.Type == pa.Extension) {
 320                                 a.Error_MisusedExtensionAttribute ();
 321                                 return;
 322                         }
 323
 324                         if (a.Type == pa.InternalsVisibleTo) {
 325                                 string assembly_name = a.GetString ();
 326                                 if (assembly_name == null) {
 327                                         Report.Error (7030, a.Location, "Friend assembly reference cannot have `null' value");
 328                                         return;
 329                                 }
 330
 331                                 if (assembly_name.Length == 0)
 332                                         return;
 333 #if STATIC
 334                                 ParsedAssemblyName aname;
 335                                 ParseAssemblyResult r = Fusion.ParseAssemblyName (assembly_name, out aname);
 336                                 if (r != ParseAssemblyResult.OK) {
 337                                         Report.Warning (1700, 3, a.Location, "Friend assembly reference `{0}' is invalid and cannot be resolved",
 338                                                 assembly_name);
 339                                         return;
 340                                 }
 341
 342                                 if (aname.Version != null || aname.Culture != null || aname.ProcessorArchitecture != ProcessorArchitecture.None) {
 343                                         Report.Error (1725, a.Location,
 344                                                 "Friend assembly reference `{0}' is invalid. InternalsVisibleTo declarations cannot have a version, culture or processor architecture specified",
 345                                                 assembly_name);
 346
 347                                         return;
 348                                 }
 349
 350                                 if (public_key != null && !aname.HasPublicKey) {
 351                                         Report.Error (1726, a.Location,
 352                                                 "Friend assembly reference `{0}' is invalid. Strong named assemblies must specify a public key in their InternalsVisibleTo declarations",
 353                                                 assembly_name);
 354                                         return;
 355                                 }
 356 #endif
 357                         } else if (a.Type == pa.RuntimeCompatibility) {
 358                                 wrap_non_exception_throws_custom = true;
 359                         } else if (a.Type == pa.AssemblyFileVersion) {
 360                                 vi_product_version = a.GetString ();
 361                                 if (string.IsNullOrEmpty (vi_product_version) || IsValidAssemblyVersion (vi_product_version, false) == null) {
 362                                         Report.Warning (7035, 1, a.Location, "The specified version string `{0}' does not conform to the recommended format major.minor.build.revision",
 363                                                 vi_product_version, a.Name);
 364                                         return;
 365                                 }
 366
 367                                 // File version info decoding from blob is not supported
 368                                 var cab = new CustomAttributeBuilder ((ConstructorInfo) ctor.GetMetaInfo (), new object[] { vi_product_version });
 369                                 Builder.SetCustomAttribute (cab);
 370                                 return;
 371                         } else if (a.Type == pa.AssemblyProduct) {
 372                                 vi_product = a.GetString ();
 373                         } else if (a.Type == pa.AssemblyCompany) {
 374                                 vi_company = a.GetString ();
 375                         } else if (a.Type == pa.AssemblyCopyright) {
 376                                 vi_copyright = a.GetString ();
 377                         } else if (a.Type == pa.AssemblyTrademark) {
 378                                 vi_trademark = a.GetString ();
 379                         } else if (a.Type == pa.Debuggable) {
 380                                 has_user_debuggable = true;
 381                         }
 382
 383                         //
 384                         // Win32 version info attributes AssemblyDescription and AssemblyTitle cannot be
 385                         // set using public API and because we have blob like attributes we need to use
 386                         // special option DecodeVersionInfoAttributeBlobs to support values extraction
 387                         //
 388
 389                         SetCustomAttribute (ctor, cdata);
 390                 }
 391
 392                 //
 393                 // When using assembly public key attributes InternalsVisibleTo key
 394                 // was not checked, we have to do it later when we actually know what
 395                 // our public key token is
 396                 //
 397                 void CheckReferencesPublicToken ()
 398                 {
 399                         // TODO: It should check only references assemblies but there is
 400                         // no working SRE API
 401                         foreach (var entry in Importer.Assemblies) {
 402                                 var a = entry as ImportedAssemblyDefinition;
 403                                 if (a == null || a.IsMissing)
 404                                         continue;
 405
 406                                 if (public_key != null && !a.HasStrongName) {
 407                                         Report.Error (1577, "Referenced assembly `{0}' does not have a strong name",
 408                                                 a.FullName);
 409                                 }
 410
 411                                 var ci = a.Assembly.GetName ().CultureInfo;
 412                                 if (!ci.Equals (CultureInfo.InvariantCulture)) {
 413                                         Report.Warning (8009, 1, "Referenced assembly `{0}' has different culture setting of `{1}'",
 414                                                 a.Name, ci.Name);
 415                                 }
 416
 417                                 if (!a.IsFriendAssemblyTo (this))
 418                                         continue;
 419
 420                                 var attr = a.GetAssemblyVisibleToName (this);
 421                                 var atoken = attr.GetPublicKeyToken ();
 422
 423                                 if (ArrayComparer.IsEqual (GetPublicKeyToken (), atoken))
 424                                         continue;
 425
 426                                 Report.SymbolRelatedToPreviousError (a.Location);
 427                                 Report.Error (281,
 428                                         "Friend access was granted to `{0}', but the output assembly is named `{1}'. Try adding a reference to `{0}' or change the output assembly name to match it",
 429                                         attr.FullName, FullName);
 430                         }
 431                 }
 432
 433                 protected AssemblyName CreateAssemblyName ()
 434                 {
 435                         var an = new AssemblyName (name);
 436
 437                         if (public_key != null && Compiler.Settings.Target != Target.Module) {
 438                                 if (delay_sign) {
 439                                         an.SetPublicKey (public_key);
 440                                 } else {
 441                                         if (public_key.Length == 16) {
 442                                                 Report.Error (1606, "Could not sign the assembly. ECMA key can only be used to delay-sign assemblies");
 443                                         } else if (private_key == null) {
 444                                                 Error_AssemblySigning ("The specified key file does not have a private key");
 445                                         } else {
 446                                                 an.KeyPair = private_key;
 447                                         }
 448                                 }
 449                         }
 450
 451                         return an;
 452                 }
 453
 454                 public virtual ModuleBuilder CreateModuleBuilder ()
 455                 {
 456                         if (file_name == null)
 457                                 throw new NotSupportedException ("transient module in static assembly");
 458
 459                         var module_name = Path.GetFileName (file_name);
 460
 461                         // Always initialize module without symbolInfo. We could be framework dependent
 462                         // but returned ISymbolWriter does not have all what we need therefore some
 463                         // adaptor will be needed for now we alwayas emit MDB format when generating
 464                         // debug info
 465                         return Builder.DefineDynamicModule (module_name, module_name, false);
 466                 }
 467
 468                 public virtual void Emit ()
 469                 {
 470                         if (Compiler.Settings.Target == Target.Module) {
 471                                 module_target_attrs = new AssemblyAttributesPlaceholder (module, name);
 472                                 module_target_attrs.CreateContainer ();
 473                                 module_target_attrs.DefineContainer ();
 474                                 module_target_attrs.Define ();
 475                                 module.AddCompilerGeneratedClass (module_target_attrs);
 476                         } else if (added_modules != null) {
 477                                 ReadModulesAssemblyAttributes ();
 478                         }
 479
 480                         if (Compiler.Settings.GenerateDebugInfo) {
 481                                 symbol_writer = new MonoSymbolFile ();
 482                         }
 483
 484                         module.EmitContainer ();
 485
 486                         if (module.HasExtensionMethod) {
 487                                 var pa = module.PredefinedAttributes.Extension;
 488                                 if (pa.IsDefined) {
 489                                         SetCustomAttribute (pa.Constructor, AttributeEncoder.Empty);
 490                                 }
 491                         }
 492
 493                         if (!IsSatelliteAssembly) {
 494                                 if (!has_user_debuggable && Compiler.Settings.GenerateDebugInfo) {
 495                                         var pa = module.PredefinedAttributes.Debuggable;
 496                                         if (pa.IsDefined) {
 497                                                 var modes = System.Diagnostics.DebuggableAttribute.DebuggingModes.IgnoreSymbolStoreSequencePoints;
 498                                                 if (!Compiler.Settings.Optimize)
 499                                                         modes |= System.Diagnostics.DebuggableAttribute.DebuggingModes.DisableOptimizations;
 500
 501                                                 pa.EmitAttribute (Builder, modes);
 502                                         }
 503                                 }
 504
 505                                 if (!wrap_non_exception_throws_custom) {
 506                                         PredefinedAttribute pa = module.PredefinedAttributes.RuntimeCompatibility;
 507                                         if (pa.IsDefined && pa.ResolveBuilder ()) {
 508                                                 var prop = module.PredefinedMembers.RuntimeCompatibilityWrapNonExceptionThrows.Get ();
 509                                                 if (prop != null) {
 510                                                         AttributeEncoder encoder = new AttributeEncoder ();
 511                                                         encoder.EncodeNamedPropertyArgument (prop, new BoolLiteral (Compiler.BuiltinTypes, true, Location.Null));
 512                                                         SetCustomAttribute (pa.Constructor, encoder.ToArray ());
 513                                                 }
 514                                         }
 515                                 }
 516
 517                                 if (declarative_security != null) {
 518 #if STATIC
 519                                         foreach (var entry in declarative_security) {
 520                                                 Builder.__AddDeclarativeSecurity (entry);
 521                                         }
 522 #else
 523                                         throw new NotSupportedException ("Assembly-level security");
 524 #endif
 525                                 }
 526                         }
 527
 528                         CheckReferencesPublicToken ();
 529
 530                         SetEntryPoint ();
 531                 }
 532
 533                 public byte[] GetPublicKeyToken ()
 534                 {
 535                         if (public_key == null || public_key_token != null)
 536                                 return public_key_token;
 537
 538                         HashAlgorithm ha = SHA1.Create ();
 539                         byte[] hash = ha.ComputeHash (public_key);
 540                         // we need the last 8 bytes in reverse order
 541                         public_key_token = new byte[8];
 542                         Buffer.BlockCopy (hash, hash.Length - 8, public_key_token, 0, 8);
 543                         Array.Reverse (public_key_token, 0, 8);
 544                         return public_key_token;
 545                 }
 546
 547                 //
 548                 // Either keyFile or keyContainer has to be non-null
 549                 //
 550                 void LoadPublicKey (string keyFile, string keyContainer)
 551                 {
 552                         if (keyContainer != null) {
 553                                 try {
 554                                         private_key = new StrongNameKeyPair (keyContainer);
 555                                         public_key = private_key.PublicKey;
 556                                 } catch {
 557                                         Error_AssemblySigning ("The specified key container `" + keyContainer + "' does not exist");
 558                                 }
 559
 560                                 return;
 561                         }
 562
 563                         bool key_file_exists = File.Exists (keyFile);
 564
 565                         //
 566                         // For attribute based KeyFile do additional lookup
 567                         // in output assembly path
 568                         //
 569                         if (!key_file_exists && Compiler.Settings.StrongNameKeyFile == null) {
 570                                 //
 571                                 // The key file can be relative to output assembly
 572                                 //
 573                                 string test_path = Path.Combine (Path.GetDirectoryName (file_name), keyFile);
 574                                 key_file_exists = File.Exists (test_path);
 575                                 if (key_file_exists)
 576                                         keyFile = test_path;
 577                         }
 578
 579                         if (!key_file_exists) {
 580                                 Error_AssemblySigning ("The specified key file `" + keyFile + "' does not exist");
 581                                 return;
 582                         }
 583
 584                         using (FileStream fs = new FileStream (keyFile, FileMode.Open, FileAccess.Read)) {
 585                                 byte[] snkeypair = new byte[fs.Length];
 586                                 fs.Read (snkeypair, 0, snkeypair.Length);
 587
 588                                 // check for ECMA key
 589                                 if (snkeypair.Length == 16) {
 590                                         public_key = snkeypair;
 591                                         return;
 592                                 }
 593
 594                                 try {
 595                                         // take it, with or without, a private key
 596                                         RSA rsa = CryptoConvert.FromCapiKeyBlob (snkeypair);
 597                                         // and make sure we only feed the public part to Sys.Ref
 598                                         byte[] publickey = CryptoConvert.ToCapiPublicKeyBlob (rsa);
 599
 600                                         // AssemblyName.SetPublicKey requires an additional header
 601                                         byte[] publicKeyHeader = new byte[8] { 0x00, 0x24, 0x00, 0x00, 0x04, 0x80, 0x00, 0x00 };
 602
 603                                         // Encode public key
 604                                         public_key = new byte[12 + publickey.Length];
 605                                         Buffer.BlockCopy (publicKeyHeader, 0, public_key, 0, publicKeyHeader.Length);
 606
 607                                         // Length of Public Key (in bytes)
 608                                         int lastPart = public_key.Length - 12;
 609                                         public_key[8] = (byte) (lastPart & 0xFF);
 610                                         public_key[9] = (byte) ((lastPart >> 8) & 0xFF);
 611                                         public_key[10] = (byte) ((lastPart >> 16) & 0xFF);
 612                                         public_key[11] = (byte) ((lastPart >> 24) & 0xFF);
 613
 614                                         Buffer.BlockCopy (publickey, 0, public_key, 12, publickey.Length);
 615                                 } catch {
 616                                         Error_AssemblySigning ("The specified key file `" + keyFile + "' has incorrect format");
 617                                         return;
 618                                 }
 619
 620                                 if (delay_sign)
 621                                         return;
 622
 623                                 try {
 624                                         // TODO: Is there better way to test for a private key presence ?
 625                                         CryptoConvert.FromCapiPrivateKeyBlob (snkeypair);
 626                                         private_key = new StrongNameKeyPair (snkeypair);
 627                                 } catch { }
 628                         }
 629                 }
 630
 631                 void ReadModulesAssemblyAttributes ()
 632                 {
 633                         foreach (var m in added_modules) {
 634                                 var cattrs = m.ReadAssemblyAttributes ();
 635                                 if (cattrs == null)
 636                                         continue;
 637
 638                                 module.OptAttributes.AddAttributes (cattrs);
 639                         }
 640                 }
 641
 642                 public void Resolve ()
 643                 {
 644                         if (Compiler.Settings.Unsafe && module.PredefinedTypes.SecurityAction.Define ()) {
 645                                 //
 646                                 // Emits [assembly: SecurityPermissionAttribute (SecurityAction.RequestMinimum, SkipVerification = true)]
 647                                 // when -unsafe option was specified
 648                                 //
 649                                 Location loc = Location.Null;
 650
 651                                 MemberAccess system_security_permissions = new MemberAccess (new MemberAccess (
 652                                         new QualifiedAliasMember (QualifiedAliasMember.GlobalAlias, "System", loc), "Security", loc), "Permissions", loc);
 653
 654                                 var req_min = module.PredefinedMembers.SecurityActionRequestMinimum.Resolve (loc);
 655
 656                                 Arguments pos = new Arguments (1);
 657                                 pos.Add (new Argument (req_min.GetConstant (null)));
 658
 659                                 Arguments named = new Arguments (1);
 660                                 named.Add (new NamedArgument ("SkipVerification", loc, new BoolLiteral (Compiler.BuiltinTypes, true, loc)));
 661
 662                                 Attribute g = new Attribute ("assembly",
 663                                         new MemberAccess (system_security_permissions, "SecurityPermissionAttribute"),
 664                                         new Arguments[] { pos, named }, loc, false);
 665                                 g.AttachTo (module, module);
 666
 667                                 // Disable no-location warnings (e.g. obsolete) for compiler generated attribute
 668                                 Compiler.Report.DisableReporting ();
 669                                 try {
 670                                         var ctor = g.Resolve ();
 671                                         if (ctor != null) {
 672                                                 g.ExtractSecurityPermissionSet (ctor, ref declarative_security);
 673                                         }
 674                                 } finally {
 675                                         Compiler.Report.EnableReporting ();
 676                                 }
 677                         }
 678
 679                         if (module.OptAttributes == null)
 680                                 return;
 681
 682                         // Ensure that we only have GlobalAttributes, since the Search isn't safe with other types.
 683                         if (!module.OptAttributes.CheckTargets())
 684                                 return;
 685
 686                         cls_attribute = module.ResolveAssemblyAttribute (module.PredefinedAttributes.CLSCompliant);
 687
 688                         if (cls_attribute != null) {
 689                                 is_cls_compliant = cls_attribute.GetClsCompliantAttributeValue ();
 690                         }
 691
 692                         if (added_modules != null && Compiler.Settings.VerifyClsCompliance && is_cls_compliant) {
 693                                 foreach (var m in added_modules) {
 694                                         if (!m.IsCLSCompliant) {
 695                                                 Report.Error (3013,
 696                                                         "Added modules must be marked with the CLSCompliant attribute to match the assembly",
 697                                                         m.Name);
 698                                         }
 699                                 }
 700                         }
 701
 702                         Attribute a = module.ResolveAssemblyAttribute (module.PredefinedAttributes.RuntimeCompatibility);
 703                         if (a != null) {
 704                                 var val = a.GetNamedValue ("WrapNonExceptionThrows") as BoolConstant;
 705                                 if (val != null)
 706                                         wrap_non_exception_throws = val.Value;
 707                         }
 708                 }
 709
 710                 protected void ResolveAssemblySecurityAttributes ()
 711                 {
 712                         string key_file = null;
 713                         string key_container = null;
 714
 715                         if (module.OptAttributes != null) {
 716                                 foreach (Attribute a in module.OptAttributes.Attrs) {
 717                                         // cannot rely on any resolve-based members before you call Resolve
 718                                         if (a.ExplicitTarget != "assembly")
 719                                                 continue;
 720
 721                                         // TODO: This code is buggy: comparing Attribute name without resolving is wrong.
 722                                         //       However, this is invoked by CodeGen.Init, when none of the namespaces
 723                                         //       are loaded yet.
 724                                         // TODO: Does not handle quoted attributes properly
 725                                         switch (a.Name) {
 726                                         case "AssemblyKeyFile":
 727                                         case "AssemblyKeyFileAttribute":
 728                                         case "System.Reflection.AssemblyKeyFileAttribute":
 729                                                 if (Compiler.Settings.StrongNameKeyFile != null) {
 730                                                         Report.SymbolRelatedToPreviousError (a.Location, a.GetSignatureForError ());
 731                                                         Report.Warning (1616, 1, "Option `{0}' overrides attribute `{1}' given in a source file or added module",
 732                                                                         "keyfile", "System.Reflection.AssemblyKeyFileAttribute");
 733                                                 } else {
 734                                                         string value = a.GetString ();
 735                                                         if (!string.IsNullOrEmpty (value)) {
 736                                                                 Error_ObsoleteSecurityAttribute (a, "keyfile");
 737                                                                 key_file = value;
 738                                                         }
 739                                                 }
 740                                                 break;
 741                                         case "AssemblyKeyName":
 742                                         case "AssemblyKeyNameAttribute":
 743                                         case "System.Reflection.AssemblyKeyNameAttribute":
 744                                                 if (Compiler.Settings.StrongNameKeyContainer != null) {
 745                                                         Report.SymbolRelatedToPreviousError (a.Location, a.GetSignatureForError ());
 746                                                         Report.Warning (1616, 1, "Option `{0}' overrides attribute `{1}' given in a source file or added module",
 747                                                                         "keycontainer", "System.Reflection.AssemblyKeyNameAttribute");
 748                                                 } else {
 749                                                         string value = a.GetString ();
 750                                                         if (!string.IsNullOrEmpty (value)) {
 751                                                                 Error_ObsoleteSecurityAttribute (a, "keycontainer");
 752                                                                 key_container = value;
 753                                                         }
 754                                                 }
 755                                                 break;
 756                                         case "AssemblyDelaySign":
 757                                         case "AssemblyDelaySignAttribute":
 758                                         case "System.Reflection.AssemblyDelaySignAttribute":
 759                                                 bool b = a.GetBoolean ();
 760                                                 if (b) {
 761                                                         Error_ObsoleteSecurityAttribute (a, "delaysign");
 762                                                 }
 763
 764                                                 delay_sign = b;
 765                                                 break;
 766                                         }
 767                                 }
 768                         }
 769
 770                         // We came here only to report assembly attributes warnings
 771                         if (public_key != null)
 772                                 return;
 773
 774                         //
 775                         // Load the strong key file found in attributes when no
 776                         // command line key was given
 777                         //
 778                         if (key_file != null || key_container != null) {
 779                                 LoadPublicKey (key_file, key_container);
 780                         } else if (delay_sign) {
 781                                 Report.Warning (1607, 1, "Delay signing was requested but no key file was given");
 782                         }
 783                 }
 784
 785                 public void EmbedResources ()
 786                 {
 787                         //
 788                         // Add Win32 resources
 789                         //
 790                         if (Compiler.Settings.Win32ResourceFile != null) {
 791                                 Builder.DefineUnmanagedResource (Compiler.Settings.Win32ResourceFile);
 792                         } else {
 793                                 Builder.DefineVersionInfoResource (vi_product, vi_product_version, vi_company, vi_copyright, vi_trademark);
 794                         }
 795
 796                         if (Compiler.Settings.Win32IconFile != null) {
 797                                 builder_extra.DefineWin32IconResource (Compiler.Settings.Win32IconFile);
 798                         }
 799
 800                         if (Compiler.Settings.Resources != null) {
 801                                 if (Compiler.Settings.Target == Target.Module) {
 802                                         Report.Error (1507, "Cannot link resource file when building a module");
 803                                 } else {
 804                                         int counter = 0;
 805                                         foreach (var res in Compiler.Settings.Resources) {
 806                                                 if (!File.Exists (res.FileName)) {
 807                                                         Report.Error (1566, "Error reading resource file `{0}'", res.FileName);
 808                                                         continue;
 809                                                 }
 810
 811                                                 if (res.IsEmbeded) {
 812                                                         Stream stream;
 813                                                         if (counter++ < 10) {
 814                                                                 stream = File.OpenRead (res.FileName);
 815                                                         } else {
 816                                                                 // TODO: SRE API requires resource stream to be available during AssemblyBuilder::Save
 817                                                                 // we workaround it by reading everything into memory to compile projects with
 818                                                                 // many embedded resource (over 3500) references
 819                                                                 stream = new MemoryStream (File.ReadAllBytes (res.FileName));
 820                                                         }
 821
 822                                                         module.Builder.DefineManifestResource (res.Name, stream, res.Attributes);
 823                                                 } else {
 824                                                         Builder.AddResourceFile (res.Name, Path.GetFileName (res.FileName), res.Attributes);
 825                                                 }
 826                                         }
 827                                 }
 828                         }
 829                 }
 830
 831                 public void Save ()
 832                 {
 833                         PortableExecutableKinds pekind = PortableExecutableKinds.ILOnly;
 834                         ImageFileMachine machine;
 835
 836                         switch (Compiler.Settings.Platform) {
 837                         case Platform.X86:
 838                                 pekind |= PortableExecutableKinds.Required32Bit;
 839                                 machine = ImageFileMachine.I386;
 840                                 break;
 841                         case Platform.X64:
 842                                 pekind |= PortableExecutableKinds.PE32Plus;
 843                                 machine = ImageFileMachine.AMD64;
 844                                 break;
 845                         case Platform.IA64:
 846                                 machine = ImageFileMachine.IA64;
 847                                 break;
 848                         case Platform.AnyCPU32Preferred:
 849 #if STATIC
 850                                 pekind |= PortableExecutableKinds.Preferred32Bit;
 851                                 machine = ImageFileMachine.I386;
 852                                 break;
 853 #else
 854                                 throw new NotSupportedException ();
 855 #endif
 856                         case Platform.Arm:
 857 #if STATIC
 858                                 machine = ImageFileMachine.ARM;
 859                                 break;
 860 #else
 861                                 throw new NotSupportedException ();
 862 #endif
 863                         case Platform.AnyCPU:
 864                         default:
 865                                 machine = ImageFileMachine.I386;
 866                                 break;
 867                         }
 868
 869                         Compiler.TimeReporter.Start (TimeReporter.TimerType.OutputSave);
 870                         try {
 871                                 if (Compiler.Settings.Target == Target.Module) {
 872                                         SaveModule (pekind, machine);
 873                                 } else {
 874                                         Builder.Save (module.Builder.ScopeName, pekind, machine);
 875                                 }
 876                         } catch (Exception e) {
 877                                 Report.Error (16, "Could not write to file `" + name + "', cause: " + e.Message);
 878                         }
 879                         Compiler.TimeReporter.Stop (TimeReporter.TimerType.OutputSave);
 880
 881                         // Save debug symbols file
 882                         if (symbol_writer != null && Compiler.Report.Errors == 0) {
 883                                 // TODO: it should run in parallel
 884                                 Compiler.TimeReporter.Start (TimeReporter.TimerType.DebugSave);
 885
 886                                 var filename = file_name + ".mdb";
 887                                 try {
 888                                         // We mmap the file, so unlink the previous version since it may be in use
 889                                         File.Delete (filename);
 890                                 } catch {
 891                                         // We can safely ignore
 892                                 }
 893
 894                                 module.WriteDebugSymbol (symbol_writer);
 895
 896                                 using (FileStream fs = new FileStream (filename, FileMode.Create, FileAccess.Write)) {
 897                                         symbol_writer.CreateSymbolFile (module.Builder.ModuleVersionId, fs);
 898                                 }
 899
 900                                 Compiler.TimeReporter.Stop (TimeReporter.TimerType.DebugSave);
 901                         }
 902                 }
 903
 904                 protected virtual void SaveModule (PortableExecutableKinds pekind, ImageFileMachine machine)
 905                 {
 906                         Report.RuntimeMissingSupport (Location.Null, "-target:module");
 907                 }
 908
 909                 void SetCustomAttribute (MethodSpec ctor, byte[] data)
 910                 {
 911                         if (module_target_attrs != null)
 912                                 module_target_attrs.AddAssemblyAttribute (ctor, data);
 913                         else
 914                                 Builder.SetCustomAttribute ((ConstructorInfo) ctor.GetMetaInfo (), data);
 915                 }
 916
 917                 void SetEntryPoint ()
 918                 {
 919                         if (!Compiler.Settings.NeedsEntryPoint) {
 920                                 if (Compiler.Settings.MainClass != null)
 921                                         Report.Error (2017, "Cannot specify -main if building a module or library");
 922
 923                                 return;
 924                         }
 925
 926                         PEFileKinds file_kind;
 927
 928                         switch (Compiler.Settings.Target) {
 929                         case Target.Library:
 930                         case Target.Module:
 931                                 file_kind = PEFileKinds.Dll;
 932                                 break;
 933                         case Target.WinExe:
 934                                 file_kind = PEFileKinds.WindowApplication;
 935                                 break;
 936                         default:
 937                                 file_kind = PEFileKinds.ConsoleApplication;
 938                                 break;
 939                         }
 940
 941                         if (entry_point == null) {
 942                                 string main_class = Compiler.Settings.MainClass;
 943                                 if (main_class != null) {
 944                                         // TODO: Handle dotted names
 945                                         var texpr = module.GlobalRootNamespace.LookupType (module, main_class, 0, LookupMode.Probing, Location.Null);
 946                                         if (texpr == null) {
 947                                                 Report.Error (1555, "Could not find `{0}' specified for Main method", main_class);
 948                                                 return;
 949                                         }
 950
 951                                         var mtype = texpr.MemberDefinition as ClassOrStruct;
 952                                         if (mtype == null) {
 953                                                 Report.Error (1556, "`{0}' specified for Main method must be a valid class or struct", main_class);
 954                                                 return;
 955                                         }
 956
 957                                         Report.Error (1558, mtype.Location, "`{0}' does not have a suitable static Main method", mtype.GetSignatureForError ());
 958                                 } else {
 959                                         string pname = file_name == null ? name : Path.GetFileName (file_name);
 960                                         Report.Error (5001, "Program `{0}' does not contain a static `Main' method suitable for an entry point",
 961                                                 pname);
 962                                 }
 963
 964                                 return;
 965                         }
 966
 967                         Builder.SetEntryPoint (entry_point.MethodBuilder, file_kind);
 968                 }
 969
 970                 void Error_ObsoleteSecurityAttribute (Attribute a, string option)
 971                 {
 972                         Report.Warning (1699, 1, a.Location,
 973                                 "Use compiler option `{0}' or appropriate project settings instead of `{1}' attribute",
 974                                 option, a.Name);
 975                 }
 976
 977                 void Error_AssemblySigning (string text)
 978                 {
 979                         Report.Error (1548, "Error during assembly signing. " + text);
 980                 }
 981
 982                 public bool IsFriendAssemblyTo (IAssemblyDefinition assembly)
 983                 {
 984                         return false;
 985                 }
 986
 987                 static Version IsValidAssemblyVersion (string version, bool allowGenerated)
 988                 {
 989                         string[] parts = version.Split ('.');
 990                         if (parts.Length < 1 || parts.Length > 4)
 991                                 return null;
 992
 993                         var values = new int[4];
 994                         for (int i = 0; i < parts.Length; ++i) {
 995                                 if (!int.TryParse (parts[i], out values[i])) {
 996                                         if (parts[i].Length == 1 && parts[i][0] == '*' && allowGenerated) {
 997                                                 if (i == 2) {
 998                                                         // Nothing can follow *
 999                                                         if (parts.Length > 3)
1000                                                                 return null;
1001
1002                                                         // Generate Build value based on days since 1/1/2000
1003                                                         TimeSpan days = DateTime.Today - new DateTime (2000, 1, 1);
1004                                                         values[i] = System.Math.Max (days.Days, 0);
1005                                                         i = 3;
1006                                                 }
1007
1008                                                 if (i == 3) {
1009                                                         // Generate Revision value based on every other second today
1010                                                         var seconds = DateTime.Now - DateTime.Today;
1011                                                         values[i] = (int) seconds.TotalSeconds / 2;
1012                                                         continue;
1013                                                 }
1014                                         }
1015
1016                                         return null;
1017                                 }
1018
1019                                 if (values[i] > ushort.MaxValue)
1020                                         return null;
1021                         }
1022
1023                         return new Version (values[0], values[1], values[2], values[3]);
1024                 }
1025         }
1026
1027         public class AssemblyResource : IEquatable<AssemblyResource>
1028         {
1029                 public AssemblyResource (string fileName, string name)
1030                         : this (fileName, name, false)
1031                 {
1032                 }
1033
1034                 public AssemblyResource (string fileName, string name, bool isPrivate)
1035                 {
1036                         FileName = fileName;
1037                         Name = name;
1038                         Attributes = isPrivate ? ResourceAttributes.Private : ResourceAttributes.Public;
1039                 }
1040
1041                 public ResourceAttributes Attributes { get; private set; }
1042                 public string Name { get; private set; }
1043                 public string FileName { get; private set; }
1044                 public bool IsEmbeded { get; set; }
1045
1046                 #region IEquatable<AssemblyResource> Members
1047
1048                 public bool Equals (AssemblyResource other)
1049                 {
1050                         return Name == other.Name;
1051                 }
1052
1053                 #endregion
1054         }
1055
1056         //
1057         // A placeholder class for assembly attributes when emitting module
1058         //
1059         class AssemblyAttributesPlaceholder : CompilerGeneratedContainer
1060         {
1061                 static readonly string TypeNamePrefix = "<$AssemblyAttributes${0}>";
1062                 public static readonly string AssemblyFieldName = "attributes";
1063
1064                 Field assembly;
1065
1066                 public AssemblyAttributesPlaceholder (ModuleContainer parent, string outputName)
1067                         : base (parent, new MemberName (GetGeneratedName (outputName)), Modifiers.STATIC | Modifiers.INTERNAL)
1068                 {
1069                         assembly = new Field (this, new TypeExpression (parent.Compiler.BuiltinTypes.Object, Location), Modifiers.PUBLIC | Modifiers.STATIC,
1070                                 new MemberName (AssemblyFieldName), null);
1071
1072                         AddField (assembly);
1073                 }
1074
1075                 public void AddAssemblyAttribute (MethodSpec ctor, byte[] data)
1076                 {
1077                         assembly.SetCustomAttribute (ctor, data);
1078                 }
1079
1080                 public static string GetGeneratedName (string outputName)
1081                 {
1082                         return string.Format (TypeNamePrefix, outputName);
1083                 }
1084         }
1085
1086         //
1087         // Extension to System.Reflection.Emit.AssemblyBuilder to have fully compatible
1088         // compiler. This is a default implementation for framework System.Reflection.Emit
1089         // which does not implement any of the methods
1090         //
1091         public class AssemblyBuilderExtension
1092         {
1093                 readonly CompilerContext ctx;
1094
1095                 public AssemblyBuilderExtension (CompilerContext ctx)
1096                 {
1097                         this.ctx = ctx;
1098                 }
1099
1100                 public virtual System.Reflection.Module AddModule (string module)
1101                 {
1102                         ctx.Report.RuntimeMissingSupport (Location.Null, "-addmodule");
1103                         return null;
1104                 }
1105
1106                 public virtual void AddPermissionRequests (PermissionSet[] permissions)
1107                 {
1108                         ctx.Report.RuntimeMissingSupport (Location.Null, "assembly declarative security");
1109                 }
1110
1111                 public virtual void AddTypeForwarder (TypeSpec type, Location loc)
1112                 {
1113                         ctx.Report.RuntimeMissingSupport (loc, "TypeForwardedToAttribute");
1114                 }
1115
1116                 public virtual void DefineWin32IconResource (string fileName)
1117                 {
1118                         ctx.Report.RuntimeMissingSupport (Location.Null, "-win32icon");
1119                 }
1120
1121                 public virtual void SetAlgorithmId (uint value, Location loc)
1122                 {
1123                         ctx.Report.RuntimeMissingSupport (loc, "AssemblyAlgorithmIdAttribute");
1124                 }
1125
1126                 public virtual void SetCulture (string culture, Location loc)
1127                 {
1128                         ctx.Report.RuntimeMissingSupport (loc, "AssemblyCultureAttribute");
1129                 }
1130
1131                 public virtual void SetFlags (uint flags, Location loc)
1132                 {
1133                         ctx.Report.RuntimeMissingSupport (loc, "AssemblyFlagsAttribute");
1134                 }
1135
1136                 public virtual void SetVersion (Version version, Location loc)
1137                 {
1138                         ctx.Report.RuntimeMissingSupport (loc, "AssemblyVersionAttribute");
1139                 }
1140         }
1141
1142         abstract class AssemblyReferencesLoader<T> where T : class
1143         {
1144                 protected readonly CompilerContext compiler;
1145
1146                 protected readonly List<string> paths;
1147
1148                 protected AssemblyReferencesLoader (CompilerContext compiler)
1149                 {
1150                         this.compiler = compiler;
1151
1152                         paths = new List<string> ();
1153                         paths.Add (Directory.GetCurrentDirectory ());
1154                         paths.AddRange (compiler.Settings.ReferencesLookupPaths);
1155                 }
1156
1157                 public abstract bool HasObjectType (T assembly);
1158                 protected abstract string[] GetDefaultReferences ();
1159                 public abstract T LoadAssemblyFile (string fileName, bool isImplicitReference);
1160                 public abstract void LoadReferences (ModuleContainer module);
1161
1162                 protected void Error_FileNotFound (string fileName)
1163                 {
1164                         compiler.Report.Error (6, "Metadata file `{0}' could not be found", fileName);
1165                 }
1166
1167                 protected void Error_FileCorrupted (string fileName)
1168                 {
1169                         compiler.Report.Error (9, "Metadata file `{0}' does not contain valid metadata", fileName);
1170                 }
1171
1172                 protected void Error_AssemblyIsModule (string fileName)
1173                 {
1174                         compiler.Report.Error (1509,
1175                                 "Referenced assembly file `{0}' is a module. Consider using `-addmodule' option to add the module",
1176                                 fileName);
1177                 }
1178
1179                 protected void Error_ModuleIsAssembly (string fileName)
1180                 {
1181                         compiler.Report.Error (1542,
1182                                 "Added module file `{0}' is an assembly. Consider using `-r' option to reference the file",
1183                                 fileName);
1184                 }
1185
1186                 protected void LoadReferencesCore (ModuleContainer module, out T corlib_assembly, out List<Tuple<RootNamespace, T>> loaded)
1187                 {
1188                         compiler.TimeReporter.Start (TimeReporter.TimerType.ReferencesLoading);
1189
1190                         loaded = new List<Tuple<RootNamespace, T>> ();
1191
1192                         //
1193                         // Load mscorlib.dll as the first
1194                         //
1195                         if (module.Compiler.Settings.StdLib) {
1196                                 corlib_assembly = LoadAssemblyFile ("mscorlib.dll", true);
1197                         } else {
1198                                 corlib_assembly = default (T);
1199                         }
1200
1201                         T a;
1202                         foreach (string r in module.Compiler.Settings.AssemblyReferences) {
1203                                 a = LoadAssemblyFile (r, false);
1204                                 if (a == null || EqualityComparer<T>.Default.Equals (a, corlib_assembly))
1205                                         continue;
1206
1207                                 var key = Tuple.Create (module.GlobalRootNamespace, a);
1208                                 if (loaded.Contains (key))
1209                                         continue;
1210
1211                                 loaded.Add (key);
1212                         }
1213
1214                         if (corlib_assembly == null) {
1215                                 //
1216                                 // Requires second pass because HasObjectType can trigger assembly load event
1217                                 //
1218                                 for (int i = 0; i < loaded.Count; ++i) {
1219                                         var assembly = loaded [i];
1220
1221                                         //
1222                                         // corlib assembly is the first referenced assembly which contains System.Object
1223                                         //
1224                                         if (HasObjectType (assembly.Item2)) {
1225                                                 corlib_assembly = assembly.Item2;
1226                                                 loaded.RemoveAt (i);
1227                                                 break;
1228                                         }
1229                                 }
1230                         }
1231
1232                         foreach (var entry in module.Compiler.Settings.AssemblyReferencesAliases) {
1233                                 a = LoadAssemblyFile (entry.Item2, false);
1234                                 if (a == null)
1235                                         continue;
1236
1237                                 var key = Tuple.Create (module.CreateRootNamespace (entry.Item1), a);
1238                                 if (loaded.Contains (key))
1239                                         continue;
1240
1241                                 loaded.Add (key);
1242                         }
1243
1244                         if (compiler.Settings.LoadDefaultReferences) {
1245                                 foreach (string r in GetDefaultReferences ()) {
1246                                         a = LoadAssemblyFile (r, true);
1247                                         if (a == null)
1248                                                 continue;
1249
1250                                         var key = Tuple.Create (module.GlobalRootNamespace, a);
1251                                         if (loaded.Contains (key))
1252                                                 continue;
1253
1254                                         loaded.Add (key);
1255                                 }
1256                         }
1257
1258                         compiler.TimeReporter.Stop (TimeReporter.TimerType.ReferencesLoading);
1259                 }
1260         }
1261 }