mcs/gmcs/rootcontext.cs

   1 //
   2 // rootcontext.cs: keeps track of our tree representation, and assemblies loaded.
   3 //
   4 // Author: Miguel de Icaza (miguel@ximian.com)
   5 //         Ravi Pratap     (ravi@ximian.com)
   6 //
   7 // Licensed under the terms of the GNU GPL
   8 //
   9 // (C) 2001 Ximian, Inc (http://www.ximian.com)
  10
  11 using System;
  12 using System.Collections;
  13 using System.Reflection;
  14 using System.Reflection.Emit;
  15 using System.Diagnostics;
  16
  17 namespace Mono.CSharp {
  18
  19         public enum LanguageVersion
  20         {
  21                 Default = 0,
  22                 ISO_1   = 1
  23         }
  24
  25         public class RootContext {
  26
  27                 //
  28                 // Contains the parsed tree
  29                 //
  30                 static Tree tree;
  31
  32                 //
  33                 // This hashtable contains all of the #definitions across the source code
  34                 // it is used by the ConditionalAttribute handler.
  35                 //
  36                 public static Hashtable AllDefines = new Hashtable ();
  37
  38                 //
  39                 // Whether we are being linked against the standard libraries.
  40                 // This is only used to tell whether `System.Object' should
  41                 // have a parent or not.
  42                 //
  43                 public static bool StdLib = true;
  44
  45                 //
  46                 // This keeps track of the order in which classes were defined
  47                 // so that we can poulate them in that order.
  48                 //
  49                 // Order is important, because we need to be able to tell by
  50                 // examining the parent's list of methods which ones are virtual
  51                 // or abstract as well as the parent names (to implement new,
  52                 // override).
  53                 //
  54                 static ArrayList type_container_resolve_order;
  55                 static ArrayList attribute_types;
  56
  57                 //
  58                 // Holds a reference to the Private Implementation Details
  59                 // class.
  60                 //
  61                 static ArrayList helper_classes;
  62
  63                 static TypeBuilder impl_details_class;
  64
  65                 public static int WarningLevel = 2;
  66
  67                 public static Target Target = Target.Exe;
  68                 public static string TargetExt = ".exe";
  69
  70                 public static bool VerifyClsCompliance = true;
  71
  72                 public static LanguageVersion Version = LanguageVersion.Default;
  73
  74                 //
  75                 // We keep strongname related info here because
  76                 // it's also used as complier options from CSC 8.x
  77                 //
  78                 public static string StrongNameKeyFile;
  79                 public static string StrongNameKeyContainer;
  80                 public static bool StrongNameDelaySign = false;
  81
  82                 //
  83                 // Constructor
  84                 //
  85                 static RootContext ()
  86                 {
  87                         tree = new Tree ();
  88                         type_container_resolve_order = new ArrayList ();
  89                 }
  90
  91                 public static bool NeedsEntryPoint {
  92                         get {
  93                                 return RootContext.Target == Target.Exe || RootContext.Target == Target.WinExe;
  94                         }
  95                 }
  96
  97                 static public Tree Tree {
  98                         get {
  99                                 return tree;
 100                         }
 101                 }
 102
 103                 static public string MainClass;
 104
 105                 public static void RegisterOrder (TypeContainer tc)
 106                 {
 107                         type_container_resolve_order.Add (tc);
 108                 }
 109
 110                 public static void RegisterAttribute (TypeContainer tc)
 111                 {
 112                         if (attribute_types == null)
 113                                 attribute_types = new ArrayList ();
 114
 115                         attribute_types.Add (tc);
 116                 }
 117
 118                 //
 119                 // The default compiler checked state
 120                 //
 121                 static public bool Checked = false;
 122
 123                 //
 124                 // Whether to allow Unsafe code
 125                 //
 126                 static public bool Unsafe = false;
 127
 128                 static string MakeFQN (string nsn, string name)
 129                 {
 130                         if (nsn == "")
 131                                 return name;
 132                         return String.Concat (nsn, ".", name);
 133                 }
 134
 135                 // <remarks>
 136                 //   This function is used to resolve the hierarchy tree.
 137                 //   It processes interfaces, structs and classes in that order.
 138                 //
 139                 //   It creates the TypeBuilder's as it processes the user defined
 140                 //   types.
 141                 // </remarks>
 142                 static public void ResolveTree ()
 143                 {
 144                         //
 145                         // Process the attribute types separately and before anything else
 146                         //
 147                         if (attribute_types != null)
 148                                 foreach (TypeContainer tc in attribute_types)
 149                                         tc.DefineType ();
 150
 151                         //
 152                         // Interfaces are processed next, as classes and
 153                         // structs might inherit from an object or implement
 154                         // a set of interfaces, we need to be able to tell
 155                         // them appart by just using the TypeManager.
 156                         //
 157                         TypeContainer root = Tree.Types;
 158
 159                         ArrayList ifaces = root.Interfaces;
 160                         if (ifaces != null){
 161                                 foreach (Interface i in ifaces)
 162                                         i.DefineType ();
 163                         }
 164
 165                         foreach (TypeContainer tc in root.Types)
 166                                 tc.DefineType ();
 167
 168                         if (root.Delegates != null)
 169                                 foreach (Delegate d in root.Delegates)
 170                                         d.DefineType ();
 171
 172                         if (root.Enums != null)
 173                                 foreach (Enum e in root.Enums)
 174                                         e.DefineType ();
 175                 }
 176
 177                 static void Error_TypeConflict (string name, Location loc)
 178                 {
 179                         Report.Error (
 180                                 520, loc, "`" + name + "' conflicts with a predefined type");
 181                 }
 182
 183                 static void Error_TypeConflict (string name)
 184                 {
 185                         Report.Error (
 186                                 520, "`" + name + "' conflicts with a predefined type");
 187                 }
 188
 189                 //
 190                 // Resolves a single class during the corlib bootstrap process
 191                 //
 192                 static TypeBuilder BootstrapCorlib_ResolveClass (TypeContainer root, string name)
 193                 {
 194                         object o = root.GetDefinition (name);
 195                         if (o == null){
 196                                 Report.Error (518, "The predefined type `" + name + "' is not defined");
 197                                 return null;
 198                         }
 199
 200                         if (!(o is Class)){
 201                                 if (o is DeclSpace){
 202                                         DeclSpace d = (DeclSpace) o;
 203
 204                                         Error_TypeConflict (name, d.Location);
 205                                 } else
 206                                         Error_TypeConflict (name);
 207
 208                                 return null;
 209                         }
 210
 211                         return ((DeclSpace) o).DefineType ();
 212                 }
 213
 214                 //
 215                 // Resolves a struct during the corlib bootstrap process
 216                 //
 217                 static void BootstrapCorlib_ResolveStruct (TypeContainer root, string name)
 218                 {
 219                         object o = root.GetDefinition (name);
 220                         if (o == null){
 221                                 Report.Error (518, "The predefined type `" + name + "' is not defined");
 222                                 return;
 223                         }
 224
 225                         if (!(o is Struct)){
 226                                 if (o is DeclSpace){
 227                                         DeclSpace d = (DeclSpace) o;
 228
 229                                         Error_TypeConflict (name, d.Location);
 230                                 } else
 231                                         Error_TypeConflict (name);
 232
 233                                 return;
 234                         }
 235
 236                         ((DeclSpace) o).DefineType ();
 237                 }
 238
 239                 //
 240                 // Resolves a struct during the corlib bootstrap process
 241                 //
 242                 static void BootstrapCorlib_ResolveInterface (TypeContainer root, string name)
 243                 {
 244                         object o = root.GetDefinition (name);
 245                         if (o == null){
 246                                 Report.Error (518, "The predefined type `" + name + "' is not defined");
 247                                 return;
 248                         }
 249
 250                         if (!(o is Interface)){
 251                                 if (o is DeclSpace){
 252                                         DeclSpace d = (DeclSpace) o;
 253
 254                                         Error_TypeConflict (name, d.Location);
 255                                 } else
 256                                         Error_TypeConflict (name);
 257
 258                                 return;
 259                         }
 260
 261                         ((DeclSpace) o).DefineType ();
 262                 }
 263
 264                 //
 265                 // Resolves a delegate during the corlib bootstrap process
 266                 //
 267                 static void BootstrapCorlib_ResolveDelegate (TypeContainer root, string name)
 268                 {
 269                         object o = root.GetDefinition (name);
 270                         if (o == null){
 271                                 Report.Error (518, "The predefined type `" + name + "' is not defined");
 272                                 Environment.Exit (1);
 273                         }
 274
 275                         if (!(o is Delegate)){
 276                                 Error_TypeConflict (name);
 277                                 return;
 278                         }
 279
 280                         ((DeclSpace) o).DefineType ();
 281                 }
 282
 283
 284                 /// <summary>
 285                 ///    Resolves the core types in the compiler when compiling with --nostdlib
 286                 /// </summary>
 287                 static public void ResolveCore ()
 288                 {
 289                         TypeContainer root = Tree.Types;
 290
 291                         TypeManager.object_type = BootstrapCorlib_ResolveClass (root, "System.Object");
 292                         TypeManager.value_type = BootstrapCorlib_ResolveClass (root, "System.ValueType");
 293                         TypeManager.attribute_type = BootstrapCorlib_ResolveClass (root, "System.Attribute");
 294
 295                         string [] interfaces_first_stage = {
 296                                 "System.IComparable", "System.ICloneable",
 297                                 "System.IConvertible",
 298
 299                                 "System.Collections.IEnumerable",
 300                                 "System.Collections.ICollection",
 301                                 "System.Collections.IEnumerator",
 302                                 "System.Collections.IList",
 303                                 "System.IAsyncResult",
 304                                 "System.IDisposable",
 305
 306                                 "System.Runtime.Serialization.ISerializable",
 307
 308                                 "System.Reflection.IReflect",
 309                                 "System.Reflection.ICustomAttributeProvider",
 310
 311                                 //
 312                                 // Generic types
 313                                 //
 314                                 "System.Collections.Generic.IEnumerator`1",
 315                                 "System.Collections.Generic.IEnumerable`1"
 316                         };
 317
 318                         foreach (string iname in interfaces_first_stage)
 319                                 BootstrapCorlib_ResolveInterface (root, iname);
 320
 321                         //
 322                         // These are the base value types
 323                         //
 324                         string [] structs_first_stage = {
 325                                 "System.Byte",    "System.SByte",
 326                                 "System.Int16",   "System.UInt16",
 327                                 "System.Int32",   "System.UInt32",
 328                                 "System.Int64",   "System.UInt64",
 329                         };
 330
 331                         foreach (string cname in structs_first_stage)
 332                                 BootstrapCorlib_ResolveStruct (root, cname);
 333
 334                         //
 335                         // Now, we can load the enumerations, after this point,
 336                         // we can use enums.
 337                         //
 338                         TypeManager.InitEnumUnderlyingTypes ();
 339
 340                         string [] structs_second_stage = {
 341                                 "System.Single",  "System.Double",
 342                                 "System.Char",    "System.Boolean",
 343                                 "System.Decimal", "System.Void",
 344                                 "System.RuntimeFieldHandle",
 345                                 "System.RuntimeArgumentHandle",
 346                                 "System.RuntimeTypeHandle",
 347                                 "System.IntPtr",
 348                                 "System.TypedReference",
 349                                 "System.ArgIterator"
 350                         };
 351
 352                         foreach (string cname in structs_second_stage)
 353                                 BootstrapCorlib_ResolveStruct (root, cname);
 354
 355                         //
 356                         // These are classes that depends on the core interfaces
 357                         //
 358                         string [] classes_second_stage = {
 359                                 "System.Reflection.MemberInfo",
 360                                 "System.Type",
 361                                 "System.Exception",
 362                                 "System.Activator",
 363
 364                                 //
 365                                 // These are not really important in the order, but they
 366                                 // are used by the compiler later on (typemanager/CoreLookupType-d)
 367                                 //
 368                                 "System.Runtime.CompilerServices.RuntimeHelpers",
 369                                 "System.Reflection.DefaultMemberAttribute",
 370                                 "System.Threading.Monitor",
 371
 372                                 "System.AttributeUsageAttribute",
 373                                 "System.Runtime.InteropServices.DllImportAttribute",
 374                                 "System.Runtime.CompilerServices.MethodImplAttribute",
 375                                 "System.Runtime.InteropServices.MarshalAsAttribute",
 376                                 "System.Runtime.CompilerServices.NewConstraintAttribute",
 377                                 "System.Diagnostics.ConditionalAttribute",
 378                                 "System.ObsoleteAttribute",
 379                                 "System.ParamArrayAttribute",
 380                                 "System.CLSCompliantAttribute",
 381                                 "System.Security.UnverifiableCodeAttribute",
 382                                 "System.Security.Permissions.SecurityAttribute",
 383                                 "System.Runtime.CompilerServices.IndexerNameAttribute",
 384                                 "System.Runtime.InteropServices.InAttribute",
 385                                 "System.Runtime.InteropServices.StructLayoutAttribute",
 386                                 "System.Runtime.InteropServices.FieldOffsetAttribute",
 387                                 "System.InvalidOperationException",
 388                                 "System.NotSupportedException",
 389                                 "System.MarshalByRefObject",
 390                                 "System.Security.CodeAccessPermission"
 391                         };
 392
 393                         // We must store them here before calling BootstrapCorlib_ResolveDelegate.
 394                         TypeManager.string_type = BootstrapCorlib_ResolveClass (root, "System.String");
 395                         TypeManager.enum_type = BootstrapCorlib_ResolveClass (root, "System.Enum");
 396                         TypeManager.array_type = BootstrapCorlib_ResolveClass (root, "System.Array");
 397                         TypeManager.multicast_delegate_type = BootstrapCorlib_ResolveClass (root, "System.MulticastDelegate");
 398                         TypeManager.delegate_type = BootstrapCorlib_ResolveClass (root, "System.Delegate");
 399
 400                         foreach (string cname in classes_second_stage)
 401                                 BootstrapCorlib_ResolveClass (root, cname);
 402
 403                         BootstrapCorlib_ResolveDelegate (root, "System.AsyncCallback");
 404                 }
 405
 406                 // <summary>
 407                 //   Closes all open types
 408                 // </summary>
 409                 //
 410                 // <remarks>
 411                 //   We usually use TypeBuilder types.  When we are done
 412                 //   creating the type (which will happen after we have added
 413                 //   methods, fields, etc) we need to "Define" them before we
 414                 //   can save the Assembly
 415                 // </remarks>
 416                 static public void CloseTypes ()
 417                 {
 418                         TypeContainer root = Tree.Types;
 419
 420                         if (root.Enums != null)
 421                                 foreach (Enum en in root.Enums)
 422                                         en.CloseType ();
 423
 424                         if (attribute_types != null)
 425                                 foreach (TypeContainer tc in attribute_types)
 426                                         tc.CloseType ();
 427
 428                         //
 429                         // We do this in two passes, first we close the structs,
 430                         // then the classes, because it seems the code needs it this
 431                         // way.  If this is really what is going on, we should probably
 432                         // make sure that we define the structs in order as well.
 433                         //
 434                         foreach (TypeContainer tc in type_container_resolve_order){
 435                                 if (tc.Kind == Kind.Struct && tc.Parent == tree.Types){
 436                                         tc.CloseType ();
 437                                 }
 438                         }
 439
 440                         foreach (TypeContainer tc in type_container_resolve_order){
 441                                 if (!(tc.Kind == Kind.Struct && tc.Parent == tree.Types))
 442                                         tc.CloseType ();
 443                         }
 444
 445                         if (root.Delegates != null)
 446                                 foreach (Delegate d in root.Delegates)
 447                                         d.CloseType ();
 448
 449
 450                         //
 451                         // If we have a <PrivateImplementationDetails> class, close it
 452                         //
 453                         if (helper_classes != null){
 454                                 foreach (TypeBuilder type_builder in helper_classes)
 455                                         type_builder.CreateType ();
 456                         }
 457
 458                         attribute_types = null;
 459                         type_container_resolve_order = null;
 460                         helper_classes = null;
 461                         //tree = null;
 462                         TypeManager.CleanUp ();
 463                 }
 464
 465                 /// <summary>
 466                 ///   Used to register classes that need to be closed after all the
 467                 ///   user defined classes
 468                 /// </summary>
 469                 public static void RegisterHelperClass (TypeBuilder helper_class)
 470                 {
 471                         if (helper_classes == null)
 472                                 helper_classes = new ArrayList ();
 473                         helper_classes.Add (helper_class);
 474                 }
 475
 476                 //
 477                 // This idea is from Felix Arrese-Igor
 478                 //
 479                 // Returns : the implicit parent of a composite namespace string
 480                 //   eg. Implicit parent of A.B is A
 481                 //
 482                 static public string ImplicitParent (string ns)
 483                 {
 484                         int i = ns.LastIndexOf ('.');
 485                         if (i < 0)
 486                                 return null;
 487
 488                         return ns.Substring (0, i);
 489                 }
 490
 491                 static TypeExpr NamespaceLookup (DeclSpace ds, string name,
 492                                                  int num_type_args, Location loc)
 493                 {
 494                         //
 495                         // Try in the current namespace and all its implicit parents
 496                         //
 497                         for (NamespaceEntry ns = ds.NamespaceEntry; ns != null; ns = ns.ImplicitParent) {
 498                                 IAlias result = ns.Lookup (ds, name, num_type_args, false, loc);
 499
 500                                 if (result == null)
 501                                         continue;
 502
 503                                 if (!result.IsType)
 504                                         return null;
 505
 506                                 return result.Type;
 507                         }
 508
 509                         return null;
 510                 }
 511
 512                 static public TypeExpr LookupType (DeclSpace ds, string name, bool silent,
 513                                                    Location loc)
 514                 {
 515                         return LookupType (ds, name, silent, 0, loc);
 516                 }
 517
 518                 //
 519                 // Public function used to locate types, this can only
 520                 // be used after the ResolveTree function has been invoked.
 521                 //
 522                 // Returns: Type or null if they type can not be found.
 523                 //
 524                 // Come to think of it, this should be a DeclSpace
 525                 //
 526                 static public TypeExpr LookupType (DeclSpace ds, string name, bool silent,
 527                                                    int num_type_params, Location loc)
 528                 {
 529                         TypeExpr t;
 530
 531                         if (ds.Cache.Contains (name)){
 532                                 t = (TypeExpr) ds.Cache [name];
 533                                 if (t != null)
 534                                         return t;
 535                         } else {
 536                                 //
 537                                 // For the case the type we are looking for is nested within this one
 538                                 // or is in any base class
 539                                 //
 540                                 DeclSpace containing_ds = ds;
 541                                 while (containing_ds != null){
 542                                         Type current_type = containing_ds.TypeBuilder;
 543
 544                                         while (current_type != null) {
 545                                                 //
 546                                                 // nested class
 547                                                 //
 548                                                 Type type = TypeManager.LookupType (current_type.FullName + "." + name);
 549                                                 if (type != null){
 550                                                         type = ds.ResolveNestedType (type, loc);
 551                                                         t = new TypeExpression (type, loc);
 552                                                         ds.Cache [name] = t;
 553                                                         return t;
 554                                                 }
 555
 556                                                 current_type = current_type.BaseType;
 557                                         }
 558
 559                                         containing_ds = containing_ds.Parent;
 560                                 }
 561
 562                                 t = NamespaceLookup (ds, name, num_type_params, loc);
 563                                 if (t != null){
 564                                         ds.Cache [name] = t;
 565                                         return t;
 566                                 }
 567                         }
 568
 569                         if (!silent)
 570                                 Report.Error (246, loc, "Cannot find type `"+name+"'");
 571
 572                         return null;
 573                 }
 574
 575                 // <summary>
 576                 //   This is the silent version of LookupType, you can use this
 577                 //   to `probe' for a type
 578                 // </summary>
 579                 static public TypeExpr LookupType (TypeContainer tc, string name, Location loc)
 580                 {
 581                         return LookupType (tc, name, true, loc);
 582                 }
 583
 584                 static void Report1530 (Location loc)
 585                 {
 586                         Report.Error (1530, loc, "Keyword new not allowed for namespace elements");
 587                 }
 588
 589                 static public void PopulateCoreType (TypeContainer root, string name)
 590                 {
 591                         DeclSpace ds = (DeclSpace) root.GetDefinition (name);
 592
 593                         ds.DefineMembers (root);
 594                         ds.Define ();
 595                 }
 596
 597                 static public void BootCorlib_PopulateCoreTypes ()
 598                 {
 599                         TypeContainer root = tree.Types;
 600
 601                         PopulateCoreType (root, "System.Object");
 602                         PopulateCoreType (root, "System.ValueType");
 603                         PopulateCoreType (root, "System.Attribute");
 604                 }
 605
 606                 // <summary>
 607                 //   Populates the structs and classes with fields and methods
 608                 // </summary>
 609                 //
 610                 // This is invoked after all interfaces, structs and classes
 611                 // have been defined through `ResolveTree'
 612                 static public void PopulateTypes ()
 613                 {
 614                         TypeContainer root = Tree.Types;
 615
 616                         if (attribute_types != null)
 617                                 foreach (TypeContainer tc in attribute_types)
 618                                         tc.DefineMembers (root);
 619
 620                         if (type_container_resolve_order != null){
 621                                 if (RootContext.StdLib){
 622                                         foreach (TypeContainer tc in type_container_resolve_order)
 623                                                 tc.DefineMembers (root);
 624                                 } else {
 625                                         foreach (TypeContainer tc in type_container_resolve_order) {
 626                                                 // When compiling corlib, these types have already been
 627                                                 // populated from BootCorlib_PopulateCoreTypes ().
 628                                                 if (((tc.Name == "System.Object") ||
 629                                                      (tc.Name == "System.Attribute") ||
 630                                                      (tc.Name == "System.ValueType")))
 631                                                 continue;
 632
 633                                                 tc.DefineMembers (root);
 634                                         }
 635                                 }
 636                         }
 637
 638                         ArrayList delegates = root.Delegates;
 639                         if (delegates != null){
 640                                 foreach (Delegate d in delegates)
 641                                         if ((d.ModFlags & Modifiers.NEW) == 0)
 642                                                 d.DefineMembers (root);
 643                                         else
 644                                                 Report1530 (d.Location);
 645                         }
 646
 647                         ArrayList enums = root.Enums;
 648                         if (enums != null){
 649                                 foreach (Enum en in enums)
 650                                         if ((en.ModFlags & Modifiers.NEW) == 0)
 651                                                 en.DefineMembers (root);
 652                                         else
 653                                                 Report1530 (en.Location);
 654                         }
 655
 656                         //
 657                         // Check for cycles in the struct layout
 658                         //
 659                         if (type_container_resolve_order != null){
 660                                 Hashtable seen = new Hashtable ();
 661                                 foreach (TypeContainer tc in type_container_resolve_order)
 662                                         TypeManager.CheckStructCycles (tc, seen);
 663                         }
 664                 }
 665
 666                 //
 667                 // A generic hook delegate
 668                 //
 669                 public delegate void Hook ();
 670
 671                 //
 672                 // A hook invoked when the code has been generated.
 673                 //
 674                 public static event Hook EmitCodeHook;
 675
 676                 //
 677                 // DefineTypes is used to fill in the members of each type.
 678                 //
 679                 static public void DefineTypes ()
 680                 {
 681                         TypeContainer root = Tree.Types;
 682
 683                         if (attribute_types != null)
 684                                 foreach (TypeContainer tc in attribute_types)
 685                                         tc.Define ();
 686
 687                         if (type_container_resolve_order != null){
 688                                 foreach (TypeContainer tc in type_container_resolve_order) {
 689                                         // When compiling corlib, these types have already been
 690                                         // populated from BootCorlib_PopulateCoreTypes ().
 691                                         if (!RootContext.StdLib &&
 692                                             ((tc.Name == "System.Object") ||
 693                                              (tc.Name == "System.Attribute") ||
 694                                              (tc.Name == "System.ValueType")))
 695                                                 continue;
 696
 697                                         if ((tc.ModFlags & Modifiers.NEW) == 0)
 698                                                 tc.Define ();
 699                                 }
 700                         }
 701
 702                         ArrayList delegates = root.Delegates;
 703                         if (delegates != null){
 704                                 foreach (Delegate d in delegates)
 705                                         if ((d.ModFlags & Modifiers.NEW) == 0)
 706                                                 d.Define ();
 707                         }
 708
 709                         ArrayList enums = root.Enums;
 710                         if (enums != null){
 711                                 foreach (Enum en in enums)
 712                                         if ((en.ModFlags & Modifiers.NEW) == 0)
 713                                                 en.Define ();
 714                         }
 715                 }
 716
 717                 static public void EmitCode ()
 718                 {
 719                         if (attribute_types != null)
 720                                 foreach (TypeContainer tc in attribute_types)
 721                                         tc.EmitType ();
 722
 723                         CodeGen.Assembly.Emit (Tree.Types);
 724                         CodeGen.Module.Emit (Tree.Types);
 725
 726                         if (Tree.Types.Enums != null) {
 727                                 foreach (Enum e in Tree.Types.Enums)
 728                                         e.Emit ();
 729                         }
 730
 731                         if (type_container_resolve_order != null) {
 732                                 foreach (TypeContainer tc in type_container_resolve_order)
 733                                         tc.EmitType ();
 734                         }
 735
 736                         if (Tree.Types.Delegates != null) {
 737                                 foreach (Delegate d in Tree.Types.Delegates)
 738                                         d.Emit ();
 739                         }
 740                         //
 741                         // Run any hooks after all the types have been defined.
 742                         // This is used to create nested auxiliary classes for example
 743                         //
 744
 745                         if (EmitCodeHook != null)
 746                                 EmitCodeHook ();
 747                 }
 748
 749                 //
 750                 // Public Field, used to track which method is the public entry
 751                 // point.
 752                 //
 753                 static public MethodInfo EntryPoint;
 754
 755                 //
 756                 // Track the location of the entry point.
 757                 //
 758                 static public Location EntryPointLocation;
 759
 760                 //
 761                 // These are used to generate unique names on the structs and fields.
 762                 //
 763                 static int field_count;
 764
 765                 //
 766                 // Makes an initialized struct, returns the field builder that
 767                 // references the data.  Thanks go to Sergey Chaban for researching
 768                 // how to do this.  And coming up with a shorter mechanism than I
 769                 // was able to figure out.
 770                 //
 771                 // This works but makes an implicit public struct $ArrayType$SIZE and
 772                 // makes the fields point to it.  We could get more control if we did
 773                 // use instead:
 774                 //
 775                 // 1. DefineNestedType on the impl_details_class with our struct.
 776                 //
 777                 // 2. Define the field on the impl_details_class
 778                 //
 779                 static public FieldBuilder MakeStaticData (byte [] data)
 780                 {
 781                         FieldBuilder fb;
 782
 783                         if (impl_details_class == null){
 784                                 impl_details_class = CodeGen.Module.Builder.DefineType (
 785                                         "<PrivateImplementationDetails>",
 786                                         TypeAttributes.NotPublic,
 787                                         TypeManager.object_type);
 788
 789                                 RegisterHelperClass (impl_details_class);
 790                         }
 791
 792                         fb = impl_details_class.DefineInitializedData (
 793                                 "$$field-" + (field_count++), data,
 794                                 FieldAttributes.Static | FieldAttributes.Assembly);
 795
 796                         return fb;
 797                 }
 798         }
 799 }
 800
 801