mcs/mcs/ikvm.cs

   1 //
   2 // ikvm.cs: IKVM.Reflection and IKVM.Reflection.Emit specific implementations
   3 //
   4 // Author: Marek Safar (marek.safar@gmail.com)
   5 //
   6 // Dual licensed under the terms of the MIT X11 or GNU GPL
   7 //
   8 // Copyright 2009-2010 Novell, Inc.
   9 // Copyright 2011 Xamarin Inc
  10 //
  11 //
  12
  13 using System;
  14 using System.Collections.Generic;
  15 using MetaType = IKVM.Reflection.Type;
  16 using IKVM.Reflection;
  17 using IKVM.Reflection.Emit;
  18 using System.IO;
  19 using System.Configuration.Assemblies;
  20
  21 namespace Mono.CSharp
  22 {
  23 #if !STATIC
  24         public class StaticImporter
  25         {
  26                 public StaticImporter (BuiltinTypes builtin)
  27                 {
  28                         throw new NotSupportedException ();
  29                 }
  30
  31                 public void ImportAssembly (Assembly assembly, RootNamespace targetNamespace)
  32                 {
  33                         throw new NotSupportedException ();
  34                 }
  35
  36                 public void ImportModule (Module module, RootNamespace targetNamespace)
  37                 {
  38                         throw new NotSupportedException ();
  39                 }
  40
  41                 public TypeSpec ImportType (System.Type type)
  42                 {
  43                         throw new NotSupportedException ();
  44                 }
  45         }
  46
  47 #else
  48
  49         sealed class StaticImporter : MetadataImporter
  50         {
  51                 public StaticImporter (ModuleContainer module)
  52                         : base (module)
  53                 {
  54                 }
  55
  56                 public void AddCompiledAssembly (AssemblyDefinitionStatic assembly)
  57                 {
  58                         assembly_2_definition.Add (assembly.Builder, assembly);
  59                 }
  60
  61                 public override void AddCompiledType (TypeBuilder type, TypeSpec spec)
  62                 {
  63                         compiled_types.Add (type, spec);
  64                 }
  65
  66                 protected override MemberKind DetermineKindFromBaseType (MetaType baseType)
  67                 {
  68                         string name = baseType.Name;
  69
  70                         if (name == "ValueType" && baseType.Namespace == "System")
  71                                 return MemberKind.Struct;
  72
  73                         if (name == "Enum" && baseType.Namespace == "System")
  74                                 return MemberKind.Enum;
  75
  76                         if (name == "MulticastDelegate" && baseType.Namespace == "System")
  77                                 return MemberKind.Delegate;
  78
  79                         return MemberKind.Class;
  80                 }
  81
  82                 protected override bool HasVolatileModifier (MetaType[] modifiers)
  83                 {
  84                         foreach (var t in modifiers) {
  85                                 if (t.Name == "IsVolatile" && t.Namespace == CompilerServicesNamespace)
  86                                         return true;
  87                         }
  88
  89                         return false;
  90                 }
  91
  92                 public void ImportAssembly (Assembly assembly, RootNamespace targetNamespace)
  93                 {
  94                         // It can be used more than once when importing same assembly
  95                         // into 2 or more global aliases
  96                         // TODO: Should be just Add
  97                         GetAssemblyDefinition (assembly);
  98
  99                         var all_types = assembly.GetTypes ();
 100                         ImportTypes (all_types, targetNamespace, true);
 101
 102                         all_types = assembly.ManifestModule.__GetExportedTypes ();
 103                         if (all_types.Length != 0)
 104                                 ImportForwardedTypes (all_types, targetNamespace);
 105                 }
 106
 107                 public ImportedModuleDefinition ImportModule (Module module, RootNamespace targetNamespace)
 108                 {
 109                         var module_definition = new ImportedModuleDefinition (module);
 110                         module_definition.ReadAttributes ();
 111
 112                         var all_types = module.GetTypes ();
 113                         ImportTypes (all_types, targetNamespace, false);
 114
 115                         return module_definition;
 116                 }
 117
 118                 void ImportForwardedTypes (MetaType[] types, Namespace targetNamespace)
 119                 {
 120                         Namespace ns = targetNamespace;
 121                         string prev_namespace = null;
 122                         foreach (var t in types) {
 123                                 // IsMissing tells us the type has been forwarded and target assembly is missing
 124                                 if (!t.__IsMissing)
 125                                         continue;
 126
 127                                 if (t.Name[0] == '<')
 128                                         continue;
 129
 130                                 var it = CreateType (t, null, new DynamicTypeReader (t), true);
 131                                 if (it == null)
 132                                         continue;
 133
 134                                 if (prev_namespace != t.Namespace) {
 135                                         ns = t.Namespace == null ? targetNamespace : targetNamespace.GetNamespace (t.Namespace, true);
 136                                         prev_namespace = t.Namespace;
 137                                 }
 138
 139                                 ns.AddType (module, it);
 140                         }
 141                 }
 142
 143                 public void InitializeBuiltinTypes (BuiltinTypes builtin, Assembly corlib)
 144                 {
 145                         //
 146                         // Setup mapping for build-in types to avoid duplication of their definition
 147                         //
 148                         foreach (var type in builtin.AllTypes) {
 149                                 compiled_types.Add (corlib.GetType (type.FullName), type);
 150                         }
 151                 }
 152         }
 153 #endif
 154
 155         class AssemblyDefinitionStatic : AssemblyDefinition
 156         {
 157                 readonly StaticLoader loader;
 158
 159                 //
 160                 // Assembly container with file output
 161                 //
 162                 public AssemblyDefinitionStatic (ModuleContainer module, StaticLoader loader, string name, string fileName)
 163                         : base (module, name, fileName)
 164                 {
 165                         this.loader = loader;
 166                         Importer = loader.MetadataImporter;
 167                 }
 168
 169                 //
 170                 // Initializes the assembly SRE domain
 171                 //
 172                 public void Create (Universe domain)
 173                 {
 174                         ResolveAssemblySecurityAttributes ();
 175                         var an = CreateAssemblyName ();
 176
 177                         Builder = domain.DefineDynamicAssembly (an, AssemblyBuilderAccess.Save, Path.GetDirectoryName (file_name));
 178                         module.Create (this, CreateModuleBuilder ());
 179                 }
 180
 181                 public override void Emit ()
 182                 {
 183                         if (loader.Corlib != null && !(loader.Corlib is AssemblyBuilder)) {
 184                                 Builder.__SetImageRuntimeVersion (loader.Corlib.ImageRuntimeVersion, 0x20000);
 185                         } else {
 186                                 // Sets output file metadata version when there is no mscorlib
 187                                 switch (module.Compiler.Settings.StdLibRuntimeVersion) {
 188                                 case RuntimeVersion.v4:
 189                                         Builder.__SetImageRuntimeVersion ("v4.0.30319", 0x20000);
 190                                         break;
 191                                 case RuntimeVersion.v2:
 192                                         Builder.__SetImageRuntimeVersion ("v2.0.50727", 0x20000);
 193                                         break;
 194                                 case RuntimeVersion.v1:
 195                                         // Compiler does not do any checks whether the produced metadata
 196                                         // are valid in the context of 1.0 stream version
 197                                         Builder.__SetImageRuntimeVersion ("v1.1.4322", 0x10000);
 198                                         break;
 199                                 default:
 200                                         throw new NotImplementedException ();
 201                                 }
 202                         }
 203
 204                         builder_extra = new AssemblyBuilderIKVM (Builder, Compiler);
 205
 206                         base.Emit ();
 207                 }
 208
 209                 public Module IncludeModule (RawModule moduleFile)
 210                 {
 211                         return Builder.__AddModule (moduleFile);
 212                 }
 213
 214                 protected override void SaveModule (PortableExecutableKinds pekind, ImageFileMachine machine)
 215                 {
 216                         module.Builder.__Save (pekind, machine);
 217                 }
 218         }
 219
 220         class StaticLoader : AssemblyReferencesLoader<Assembly>, IDisposable
 221         {
 222                 readonly StaticImporter importer;
 223                 readonly Universe domain;
 224                 Assembly corlib;
 225                 List<Tuple<AssemblyName, string, Assembly>> loaded_names;
 226                 static readonly Dictionary<string, string[]> sdk_directory;
 227
 228                 static StaticLoader ()
 229                 {
 230                         sdk_directory = new Dictionary<string, string[]> ();
 231                         sdk_directory.Add ("2", new string[] { "2.0", "net_2_0", "v2.0.50727" });
 232                         sdk_directory.Add ("4", new string[] { "4.0", "net_4_0", "v4.0.30319" });
 233                         sdk_directory.Add ("4.5", new string[] { "4.5", "net_4_5", "v4.0.30319" });
 234                 }
 235
 236                 public StaticLoader (StaticImporter importer, CompilerContext compiler)
 237                         : base (compiler)
 238                 {
 239                         this.importer = importer;
 240                         domain = new Universe (UniverseOptions.MetadataOnly);
 241                         domain.EnableMissingMemberResolution ();
 242                         domain.AssemblyResolve += AssemblyReferenceResolver;
 243                         loaded_names = new List<Tuple<AssemblyName, string, Assembly>> ();
 244
 245                         if (compiler.Settings.StdLib) {
 246                                 var corlib_path = Path.GetDirectoryName (typeof (object).Assembly.Location);
 247                                 string fx_path = corlib_path.Substring (0, corlib_path.LastIndexOf (Path.DirectorySeparatorChar));
 248
 249                                 string sdk_path = null;
 250
 251                                 string sdk_version = compiler.Settings.SdkVersion ?? "4.5";
 252                                 string[] sdk_sub_dirs;
 253
 254                                 if (!sdk_directory.TryGetValue (sdk_version, out sdk_sub_dirs))
 255                                         sdk_sub_dirs = new string[] { sdk_version };
 256
 257                                 foreach (var dir in sdk_sub_dirs) {
 258                                         sdk_path = Path.Combine (fx_path, dir);
 259                                         if (File.Exists (Path.Combine (sdk_path, "mscorlib.dll")))
 260                                                 break;
 261
 262                                         sdk_path = null;
 263                                 }
 264
 265                                 if (sdk_path == null) {
 266                                         compiler.Report.Warning (-1, 1, "SDK path could not be resolved");
 267                                         sdk_path = corlib_path;
 268                                 }
 269
 270                                 paths.Add (sdk_path);
 271                         }
 272                 }
 273
 274                 #region Properties
 275
 276                 public Assembly Corlib {
 277                         get {
 278                                 return corlib;
 279                         }
 280                 }
 281
 282                 public Universe Domain {
 283                         get {
 284                                 return domain;
 285                         }
 286                 }
 287
 288                 public StaticImporter MetadataImporter {
 289                         get {
 290                                 return importer;
 291                         }
 292                 }
 293
 294                 #endregion
 295
 296                 Assembly AssemblyReferenceResolver (object sender, IKVM.Reflection.ResolveEventArgs args)
 297                 {
 298                         var refname = args.Name;
 299                         if (refname == "mscorlib")
 300                                 return corlib;
 301
 302                         Assembly version_mismatch = null;
 303                         bool is_fx_assembly = false;
 304
 305                         foreach (var assembly in domain.GetAssemblies ()) {
 306                                 AssemblyComparisonResult result;
 307                                 if (!Fusion.CompareAssemblyIdentityPure (refname, false, assembly.FullName, false, out result)) {
 308                                         if ((result == AssemblyComparisonResult.NonEquivalentVersion || result == AssemblyComparisonResult.NonEquivalentPartialVersion) &&
 309                                                 (version_mismatch == null || version_mismatch.GetName ().Version < assembly.GetName ().Version) &&
 310                                                 !is_fx_assembly) {
 311                                                 version_mismatch = assembly;
 312                                         }
 313
 314                                         continue;
 315                                 }
 316
 317                                 if (result == AssemblyComparisonResult.EquivalentFullMatch ||
 318                                         result == AssemblyComparisonResult.EquivalentWeakNamed ||
 319                                         result == AssemblyComparisonResult.EquivalentPartialMatch) {
 320                                         return assembly;
 321                                 }
 322
 323                                 if (result == AssemblyComparisonResult.EquivalentFXUnified) {
 324                                         is_fx_assembly = true;
 325
 326                                         if (version_mismatch == null || version_mismatch.GetName ().Version < assembly.GetName ().Version)
 327                                                 version_mismatch = assembly;
 328
 329                                         continue;
 330                                 }
 331
 332                                 throw new NotImplementedException ("Assembly equality = " + result.ToString ());
 333                         }
 334
 335                         if (version_mismatch != null) {
 336                                 if (version_mismatch is AssemblyBuilder)
 337                                         return version_mismatch;
 338
 339                                 var v1 = new AssemblyName (refname).Version;
 340                                 var v2 = version_mismatch.GetName ().Version;
 341
 342                                 if (v1 > v2) {
 343 //                                      compiler.Report.SymbolRelatedToPreviousError (args.RequestingAssembly.Location);
 344                                         compiler.Report.Error (1705, "Assembly `{0}' references `{1}' which has a higher version number than imported assembly `{2}'",
 345                                                 args.RequestingAssembly.FullName, refname, version_mismatch.GetName ().FullName);
 346
 347                                         return domain.CreateMissingAssembly (args.Name);
 348                                 }
 349
 350                                 if (!is_fx_assembly) {
 351                                         if (v1.Major != v2.Major || v1.Minor != v2.Minor) {
 352                                                 compiler.Report.Warning (1701, 2,
 353                                                         "Assuming assembly reference `{0}' matches assembly `{1}'. You may need to supply runtime policy",
 354                                                         refname, version_mismatch.GetName ().FullName);
 355                                         } else {
 356                                                 compiler.Report.Warning (1702, 3,
 357                                                         "Assuming assembly reference `{0}' matches assembly `{1}'. You may need to supply runtime policy",
 358                                                         refname, version_mismatch.GetName ().FullName);
 359                                         }
 360                                 }
 361
 362                                 return version_mismatch;
 363                         }
 364
 365                         // AssemblyReference has not been found in the domain
 366                         // create missing reference and continue
 367                         return domain.CreateMissingAssembly (args.Name);
 368                 }
 369
 370                 public void Dispose ()
 371                 {
 372                         domain.Dispose ();
 373                 }
 374
 375                 protected override string[] GetDefaultReferences ()
 376                 {
 377                         //
 378                         // For now the "default config" is harcoded into the compiler
 379                         // we can move this outside later
 380                         //
 381                         var default_references = new List<string> (4);
 382
 383                         default_references.Add ("System.dll");
 384                         default_references.Add ("System.Xml.dll");
 385                         default_references.Add ("System.Core.dll");
 386
 387                         if (corlib != null && corlib.GetName ().Version.Major >= 4) {
 388                                 default_references.Add ("Microsoft.CSharp.dll");
 389                         }
 390
 391                         return default_references.ToArray ();
 392                 }
 393
 394                 public override bool HasObjectType (Assembly assembly)
 395                 {
 396                         return assembly.GetType (compiler.BuiltinTypes.Object.FullName) != null;
 397                 }
 398
 399                 public override Assembly LoadAssemblyFile (string fileName, bool isImplicitReference)
 400                 {
 401                         bool? has_extension = null;
 402                         foreach (var path in paths) {
 403                                 var file = Path.Combine (path, fileName);
 404                                 if (compiler.Settings.DebugFlags > 0)
 405                                         Console.WriteLine ("Probing assembly location `{0}'", file);
 406
 407                                 if (!File.Exists (file)) {
 408                                         if (!has_extension.HasValue)
 409                                                 has_extension = fileName.EndsWith (".dll", StringComparison.Ordinal) || fileName.EndsWith (".exe", StringComparison.Ordinal);
 410
 411                                         if (has_extension.Value)
 412                                                 continue;
 413
 414                                         file += ".dll";
 415                                         if (!File.Exists (file))
 416                                                 continue;
 417                                 }
 418
 419                                 try {
 420                                         using (var stream = new FileStream (file, FileMode.Open, FileAccess.Read, FileShare.Read)) {
 421                                                 using (RawModule module = domain.OpenRawModule (stream, file)) {
 422                                                         if (!module.IsManifestModule) {
 423                                                                 Error_AssemblyIsModule (fileName);
 424                                                                 return null;
 425                                                         }
 426
 427                                                         //
 428                                                         // check whether the assembly can be actually imported without
 429                                                         // collision
 430                                                         //
 431                                                         var an = module.GetAssemblyName ();
 432                                                         foreach (var entry in loaded_names) {
 433                                                                 var loaded_name = entry.Item1;
 434                                                                 if (an.Name != loaded_name.Name)
 435                                                                         continue;
 436
 437                                                                 if (module.ModuleVersionId == entry.Item3.ManifestModule.ModuleVersionId)
 438                                                                         return entry.Item3;
 439
 440                                                                 if (((an.Flags | loaded_name.Flags) & AssemblyNameFlags.PublicKey) == 0) {
 441                                                                         compiler.Report.SymbolRelatedToPreviousError (entry.Item2);
 442                                                                         compiler.Report.SymbolRelatedToPreviousError (fileName);
 443                                                                         compiler.Report.Error (1704,
 444                                                                                 "An assembly with the same name `{0}' has already been imported. Consider removing one of the references or sign the assembly",
 445                                                                                 an.Name);
 446                                                                         return null;
 447                                                                 }
 448
 449                                                                 if ((an.Flags & AssemblyNameFlags.PublicKey) == (loaded_name.Flags & AssemblyNameFlags.PublicKey) && an.Version.Equals (loaded_name.Version)) {
 450                                                                         compiler.Report.SymbolRelatedToPreviousError (entry.Item2);
 451                                                                         compiler.Report.SymbolRelatedToPreviousError (fileName);
 452                                                                         compiler.Report.Error (1703,
 453                                                                                 "An assembly with the same identity `{0}' has already been imported. Consider removing one of the references",
 454                                                                                 an.FullName);
 455                                                                         return null;
 456                                                                 }
 457                                                         }
 458
 459                                                         if (compiler.Settings.DebugFlags > 0)
 460                                                                 Console.WriteLine ("Loading assembly `{0}'", fileName);
 461
 462                                                         var assembly = domain.LoadAssembly (module);
 463                                                         if (assembly != null)
 464                                                                 loaded_names.Add (Tuple.Create (an, fileName, assembly));
 465
 466                                                         return assembly;
 467                                                 }
 468                                         }
 469                                 } catch (Exception e) {
 470                                         if (compiler.Settings.DebugFlags > 0)
 471                                                 Console.WriteLine ("Exception during loading: {0}'", e.ToString ());
 472
 473                                         if (!isImplicitReference)
 474                                                 Error_FileCorrupted (file);
 475
 476                                         return null;
 477                                 }
 478                         }
 479
 480                         if (!isImplicitReference)
 481                                 Error_FileNotFound (fileName);
 482
 483                         return null;
 484                 }
 485
 486                 public RawModule LoadModuleFile (string moduleName)
 487                 {
 488                         foreach (var path in paths) {
 489                                 var file = Path.Combine (path, moduleName);
 490                                 if (!File.Exists (file)) {
 491                                         if (moduleName.EndsWith (".netmodule", StringComparison.Ordinal))
 492                                                 continue;
 493
 494                                         file += ".netmodule";
 495                                         if (!File.Exists (file))
 496                                                 continue;
 497                                 }
 498
 499                                 try {
 500                                         return domain.OpenRawModule (file);
 501                                 } catch {
 502                                         Error_FileCorrupted (file);
 503                                         return null;
 504                                 }
 505                         }
 506
 507                         Error_FileNotFound (moduleName);
 508                         return null;
 509                 }
 510
 511                 public override void LoadReferences (ModuleContainer module)
 512                 {
 513                         List<Tuple<RootNamespace, Assembly>> loaded;
 514                         base.LoadReferencesCore (module, out corlib, out loaded);
 515
 516                         compiler.TimeReporter.Start (TimeReporter.TimerType.ReferencesImporting);
 517
 518                         if (corlib == null) {
 519                                 // System.Object was not found in any referenced assembly, use compiled assembly as corlib
 520                                 corlib = module.DeclaringAssembly.Builder;
 521                         } else {
 522                                 importer.InitializeBuiltinTypes (compiler.BuiltinTypes, corlib);
 523                                 importer.ImportAssembly (corlib, module.GlobalRootNamespace);
 524                         }
 525
 526                         foreach (var entry in loaded) {
 527                                 importer.ImportAssembly (entry.Item2, entry.Item1);
 528                         }
 529
 530                         compiler.TimeReporter.Stop (TimeReporter.TimerType.ReferencesImporting);
 531                 }
 532
 533                 public void LoadModules (AssemblyDefinitionStatic assembly, RootNamespace targetNamespace)
 534                 {
 535                         foreach (var moduleName in compiler.Settings.Modules) {
 536                                 var m = LoadModuleFile (moduleName);
 537                                 if (m == null)
 538                                         continue;
 539
 540                                 if (m.IsManifestModule) {
 541                                         Error_ModuleIsAssembly (moduleName);
 542                                         continue;
 543                                 }
 544
 545                                 var md = importer.ImportModule (assembly.IncludeModule (m), targetNamespace);
 546                                 assembly.AddModule (md);
 547                         }
 548                 }
 549         }
 550
 551         class AssemblyBuilderIKVM : AssemblyBuilderExtension
 552         {
 553                 readonly AssemblyBuilder builder;
 554
 555                 public AssemblyBuilderIKVM (AssemblyBuilder builder, CompilerContext ctx)
 556                         : base (ctx)
 557                 {
 558                         this.builder = builder;
 559                 }
 560
 561                 public override void AddTypeForwarder (TypeSpec type, Location loc)
 562                 {
 563                         builder.__AddTypeForwarder (type.GetMetaInfo ());
 564                 }
 565
 566                 public override void DefineWin32IconResource (string fileName)
 567                 {
 568                         builder.__DefineIconResource (File.ReadAllBytes (fileName));
 569                 }
 570
 571                 public override void SetAlgorithmId (uint value, Location loc)
 572                 {
 573                         builder.__SetAssemblyAlgorithmId ((AssemblyHashAlgorithm) value);
 574                 }
 575
 576                 public override void SetCulture (string culture, Location loc)
 577                 {
 578                         builder.__SetAssemblyCulture (culture);
 579                 }
 580
 581                 public override void SetFlags (uint flags, Location loc)
 582                 {
 583                         builder.__AssemblyFlags = (AssemblyNameFlags) flags;
 584                 }
 585
 586                 public override void SetVersion (Version version, Location loc)
 587                 {
 588                         builder.__SetAssemblyVersion (version);
 589                 }
 590         }
 591 }