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