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 class RootContext {
  20
  21                 //
  22                 // Contains the parsed tree
  23                 //
  24                 static Tree tree;
  25
  26                 //
  27                 // This hashtable contains all of the #definitions across the source code
  28                 // it is used by the ConditionalAttribute handler.
  29                 //
  30                 public static Hashtable AllDefines = new Hashtable ();
  31
  32                 //
  33                 // Whether we are being linked against the standard libraries.
  34                 // This is only used to tell whether `System.Object' should
  35                 // have a parent or not.
  36                 //
  37                 public static bool StdLib = true;
  38
  39                 //
  40                 // This keeps track of the order in which classes were defined
  41                 // so that we can poulate them in that order.
  42                 //
  43                 // Order is important, because we need to be able to tell by
  44                 // examining the parent's list of methods which ones are virtual
  45                 // or abstract as well as the parent names (to implement new,
  46                 // override).
  47                 //
  48                 static ArrayList type_container_resolve_order;
  49                 static ArrayList interface_resolve_order;
  50                 static ArrayList attribute_types;
  51
  52                 //
  53                 // Holds a reference to the Private Implementation Details
  54                 // class.
  55                 //
  56                 static ArrayList helper_classes;
  57
  58                 static TypeBuilder impl_details_class;
  59
  60                 public static int WarningLevel = 2;
  61
  62                 public static Target Target = Target.Exe;
  63                 public static string TargetExt = ".exe";
  64
  65                 //
  66                 // If set, enable C# version 2 features
  67                 //
  68                 public static bool V2 = true;
  69                 //
  70                 // Constructor
  71                 //
  72                 static RootContext ()
  73                 {
  74                         tree = new Tree ();
  75                         interface_resolve_order = new ArrayList ();
  76                         type_container_resolve_order = new ArrayList ();
  77                 }
  78
  79                 public static bool NeedsEntryPoint {
  80                         get {
  81                                 return RootContext.Target == Target.Exe || RootContext.Target == Target.WinExe;
  82                         }
  83                 }
  84
  85                 static public Tree Tree {
  86                         get {
  87                                 return tree;
  88                         }
  89                 }
  90
  91                 static public string MainClass;
  92
  93                 public static void RegisterOrder (Interface iface)
  94                 {
  95                         interface_resolve_order.Add (iface);
  96                 }
  97
  98                 public static void RegisterOrder (TypeContainer tc)
  99                 {
 100                         type_container_resolve_order.Add (tc);
 101                 }
 102
 103                 public static void RegisterAttribute (TypeContainer tc)
 104                 {
 105                         if (attribute_types == null)
 106                                 attribute_types = new ArrayList ();
 107
 108                         attribute_types.Add (tc);
 109                 }
 110
 111                 //
 112                 // The default compiler checked state
 113                 //
 114                 static public bool Checked = false;
 115
 116                 //
 117                 // Whether to allow Unsafe code
 118                 //
 119                 static public bool Unsafe = false;
 120
 121                 static string MakeFQN (string nsn, string name)
 122                 {
 123                         if (nsn == "")
 124                                 return name;
 125                         return String.Concat (nsn, ".", name);
 126                 }
 127
 128                 // <remarks>
 129                 //   This function is used to resolve the hierarchy tree.
 130                 //   It processes interfaces, structs and classes in that order.
 131                 //
 132                 //   It creates the TypeBuilder's as it processes the user defined
 133                 //   types.
 134                 // </remarks>
 135                 static public void ResolveTree ()
 136                 {
 137                         //
 138                         // Process the attribute types separately and before anything else
 139                         //
 140                         if (attribute_types != null)
 141                                 foreach (TypeContainer tc in attribute_types)
 142                                         tc.DefineType ();
 143
 144                         //
 145                         // Interfaces are processed next, as classes and
 146                         // structs might inherit from an object or implement
 147                         // a set of interfaces, we need to be able to tell
 148                         // them appart by just using the TypeManager.
 149                         //
 150                         TypeContainer root = Tree.Types;
 151
 152                         ArrayList ifaces = root.Interfaces;
 153                         if (ifaces != null){
 154                                 foreach (Interface i in ifaces)
 155                                         i.DefineType ();
 156                         }
 157
 158                         foreach (TypeContainer tc in root.Types)
 159                                 tc.DefineType ();
 160
 161                         if (root.Delegates != null)
 162                                 foreach (Delegate d in root.Delegates)
 163                                         d.DefineType ();
 164
 165                         if (root.Enums != null)
 166                                 foreach (Enum e in root.Enums)
 167                                         e.DefineType ();
 168                 }
 169
 170                 static void Error_TypeConflict (string name, Location loc)
 171                 {
 172                         Report.Error (
 173                                 520, loc, "`" + name + "' conflicts with a predefined type");
 174                 }
 175
 176                 static void Error_TypeConflict (string name)
 177                 {
 178                         Report.Error (
 179                                 520, "`" + name + "' conflicts with a predefined type");
 180                 }
 181
 182                 //
 183                 // Resolves a single class during the corlib bootstrap process
 184                 //
 185                 static TypeBuilder BootstrapCorlib_ResolveClass (TypeContainer root, string name)
 186                 {
 187                         object o = root.GetDefinition (name);
 188                         if (o == null){
 189                                 Report.Error (518, "The predefined type `" + name + "' is not defined");
 190                                 return null;
 191                         }
 192
 193                         if (!(o is Class)){
 194                                 if (o is DeclSpace){
 195                                         DeclSpace d = (DeclSpace) o;
 196
 197                                         Error_TypeConflict (name, d.Location);
 198                                 } else
 199                                         Error_TypeConflict (name);
 200
 201                                 return null;
 202                         }
 203
 204                         return ((DeclSpace) o).DefineType ();
 205                 }
 206
 207                 //
 208                 // Resolves a struct during the corlib bootstrap process
 209                 //
 210                 static void BootstrapCorlib_ResolveStruct (TypeContainer root, string name)
 211                 {
 212                         object o = root.GetDefinition (name);
 213                         if (o == null){
 214                                 Report.Error (518, "The predefined type `" + name + "' is not defined");
 215                                 return;
 216                         }
 217
 218                         if (!(o is Struct)){
 219                                 if (o is DeclSpace){
 220                                         DeclSpace d = (DeclSpace) o;
 221
 222                                         Error_TypeConflict (name, d.Location);
 223                                 } else
 224                                         Error_TypeConflict (name);
 225
 226                                 return;
 227                         }
 228
 229                         ((DeclSpace) o).DefineType ();
 230                 }
 231
 232                 //
 233                 // Resolves a struct during the corlib bootstrap process
 234                 //
 235                 static void BootstrapCorlib_ResolveInterface (TypeContainer root, string name)
 236                 {
 237                         object o = root.GetDefinition (name);
 238                         if (o == null){
 239                                 Report.Error (518, "The predefined type `" + name + "' is not defined");
 240                                 return;
 241                         }
 242
 243                         if (!(o is Interface)){
 244                                 if (o is DeclSpace){
 245                                         DeclSpace d = (DeclSpace) o;
 246
 247                                         Error_TypeConflict (name, d.Location);
 248                                 } else
 249                                         Error_TypeConflict (name);
 250
 251                                 return;
 252                         }
 253
 254                         ((DeclSpace) o).DefineType ();
 255                 }
 256
 257                 //
 258                 // Resolves a delegate during the corlib bootstrap process
 259                 //
 260                 static void BootstrapCorlib_ResolveDelegate (TypeContainer root, string name)
 261                 {
 262                         object o = root.GetDefinition (name);
 263                         if (o == null){
 264                                 Report.Error (518, "The predefined type `" + name + "' is not defined");
 265                                 Environment.Exit (0);
 266                         }
 267
 268                         if (!(o is Delegate)){
 269                                 Error_TypeConflict (name);
 270                                 return;
 271                         }
 272
 273                         ((DeclSpace) o).DefineType ();
 274                 }
 275
 276
 277                 /// <summary>
 278                 ///    Resolves the core types in the compiler when compiling with --nostdlib
 279                 /// </summary>
 280                 static public void ResolveCore ()
 281                 {
 282                         TypeContainer root = Tree.Types;
 283
 284                         TypeManager.object_type = BootstrapCorlib_ResolveClass (root, "System.Object");
 285                         TypeManager.value_type = BootstrapCorlib_ResolveClass (root, "System.ValueType");
 286                         TypeManager.attribute_type = BootstrapCorlib_ResolveClass (root, "System.Attribute");
 287
 288                         string [] interfaces_first_stage = {
 289                                 "System.IComparable", "System.ICloneable",
 290                                 "System.IConvertible",
 291
 292                                 "System.Collections.IEnumerable",
 293                                 "System.Collections.ICollection",
 294                                 "System.Collections.IEnumerator",
 295                                 "System.Collections.IList",
 296                                 "System.IAsyncResult",
 297                                 "System.IDisposable",
 298
 299                                 "System.Runtime.Serialization.ISerializable",
 300
 301                                 "System.Reflection.IReflect",
 302                                 "System.Reflection.ICustomAttributeProvider"
 303                         };
 304
 305                         foreach (string iname in interfaces_first_stage)
 306                                 BootstrapCorlib_ResolveInterface (root, iname);
 307
 308                         //
 309                         // These are the base value types
 310                         //
 311                         string [] structs_first_stage = {
 312                                 "System.Byte",    "System.SByte",
 313                                 "System.Int16",   "System.UInt16",
 314                                 "System.Int32",   "System.UInt32",
 315                                 "System.Int64",   "System.UInt64",
 316                         };
 317
 318                         foreach (string cname in structs_first_stage)
 319                                 BootstrapCorlib_ResolveStruct (root, cname);
 320
 321                         //
 322                         // Now, we can load the enumerations, after this point,
 323                         // we can use enums.
 324                         //
 325                         TypeManager.InitEnumUnderlyingTypes ();
 326
 327                         string [] structs_second_stage = {
 328                                 "System.Single",  "System.Double",
 329                                 "System.Char",    "System.Boolean",
 330                                 "System.Decimal", "System.Void",
 331                                 "System.RuntimeFieldHandle",
 332                                 "System.RuntimeTypeHandle",
 333                                 "System.IntPtr"
 334                         };
 335
 336                         foreach (string cname in structs_second_stage)
 337                                 BootstrapCorlib_ResolveStruct (root, cname);
 338
 339                         //
 340                         // These are classes that depends on the core interfaces
 341                         //
 342                         string [] classes_second_stage = {
 343                                 "System.Reflection.MemberInfo",
 344                                 "System.Type",
 345                                 "System.Exception",
 346
 347                                 //
 348                                 // These are not really important in the order, but they
 349                                 // are used by the compiler later on (typemanager/CoreLookupType-d)
 350                                 //
 351                                 "System.Runtime.CompilerServices.RuntimeHelpers",
 352                                 "System.Reflection.DefaultMemberAttribute",
 353                                 "System.Threading.Monitor",
 354
 355                                 "System.AttributeUsageAttribute",
 356                                 "System.Runtime.InteropServices.DllImportAttribute",
 357                                 "System.Runtime.CompilerServices.MethodImplAttribute",
 358                                 "System.Runtime.InteropServices.MarshalAsAttribute",
 359                                 "System.Runtime.CompilerServices.NewConstraintAttribute",
 360                                 "System.Diagnostics.ConditionalAttribute",
 361                                 "System.ObsoleteAttribute",
 362                                 "System.ParamArrayAttribute",
 363                                 "System.Security.UnverifiableCodeAttribute",
 364                                 "System.Runtime.CompilerServices.IndexerNameAttribute",
 365                                 "System.Runtime.InteropServices.InAttribute",
 366                                 "System.InvalidOperationException"
 367
 368                         };
 369
 370                         // We must store them here before calling BootstrapCorlib_ResolveDelegate.
 371                         TypeManager.string_type = BootstrapCorlib_ResolveClass (root, "System.String");
 372                         TypeManager.enum_type = BootstrapCorlib_ResolveClass (root, "System.Enum");
 373                         TypeManager.array_type = BootstrapCorlib_ResolveClass (root, "System.Array");
 374                         TypeManager.multicast_delegate_type = BootstrapCorlib_ResolveClass (root, "System.MulticastDelegate");
 375                         TypeManager.delegate_type = BootstrapCorlib_ResolveClass (root, "System.Delegate");
 376
 377                         foreach (string cname in classes_second_stage)
 378                                 BootstrapCorlib_ResolveClass (root, cname);
 379
 380                         BootstrapCorlib_ResolveDelegate (root, "System.AsyncCallback");
 381                 }
 382
 383                 // <summary>
 384                 //   Closes all open types
 385                 // </summary>
 386                 //
 387                 // <remarks>
 388                 //   We usually use TypeBuilder types.  When we are done
 389                 //   creating the type (which will happen after we have added
 390                 //   methods, fields, etc) we need to "Define" them before we
 391                 //   can save the Assembly
 392                 // </remarks>
 393                 static public void CloseTypes ()
 394                 {
 395                         TypeContainer root = Tree.Types;
 396
 397                         if (root.Enums != null)
 398                                 foreach (Enum en in root.Enums)
 399                                         en.CloseType ();
 400
 401                         if (attribute_types != null)
 402                                 foreach (TypeContainer tc in attribute_types)
 403                                         tc.CloseType ();
 404
 405                         foreach (Interface iface in interface_resolve_order)
 406                                 iface.CloseType ();
 407
 408                         //
 409                         // We do this in two passes, first we close the structs,
 410                         // then the classes, because it seems the code needs it this
 411                         // way.  If this is really what is going on, we should probably
 412                         // make sure that we define the structs in order as well.
 413                         //
 414                         foreach (TypeContainer tc in type_container_resolve_order){
 415                                 if (tc is Struct && tc.Parent == tree.Types){
 416                                         tc.CloseType ();
 417                                 }
 418                         }
 419
 420                         foreach (TypeContainer tc in type_container_resolve_order){
 421                                 if (!(tc is Struct && tc.Parent == tree.Types))
 422                                         tc.CloseType ();
 423                         }
 424
 425                         if (root.Delegates != null)
 426                                 foreach (Delegate d in root.Delegates)
 427                                         d.CloseType ();
 428
 429
 430                         //
 431                         // If we have a <PrivateImplementationDetails> class, close it
 432                         //
 433                         if (helper_classes != null){
 434                                 foreach (TypeBuilder type_builder in helper_classes)
 435                                         type_builder.CreateType ();
 436                         }
 437
 438                         attribute_types = null;
 439                         interface_resolve_order = null;
 440                         type_container_resolve_order = null;
 441                         helper_classes = null;
 442                         tree = null;
 443                         TypeManager.CleanUp ();
 444                 }
 445
 446                 /// <summary>
 447                 ///   Used to register classes that need to be closed after all the
 448                 ///   user defined classes
 449                 /// </summary>
 450                 public static void RegisterHelperClass (TypeBuilder helper_class)
 451                 {
 452                         if (helper_classes == null)
 453                                 helper_classes = new ArrayList ();
 454                         helper_classes.Add (helper_class);
 455                 }
 456
 457                 //
 458                 // This idea is from Felix Arrese-Igor
 459                 //
 460                 // Returns : the implicit parent of a composite namespace string
 461                 //   eg. Implicit parent of A.B is A
 462                 //
 463                 static public string ImplicitParent (string ns)
 464                 {
 465                         int i = ns.LastIndexOf ('.');
 466                         if (i < 0)
 467                                 return null;
 468
 469                         return ns.Substring (0, i);
 470                 }
 471
 472                 static Type NamespaceLookup (DeclSpace ds, string name,
 473                                              int num_type_args, Location loc)
 474                 {
 475                         //
 476                         // Try in the current namespace and all its implicit parents
 477                         //
 478                         for (NamespaceEntry ns = ds.NamespaceEntry; ns != null; ns = ns.ImplicitParent) {
 479                                 object result = ns.Lookup (ds, name, loc);
 480                                 if (result == null)
 481                                         continue;
 482
 483                                 Type t = result as Type;
 484                                 if (t != null) {
 485                                         if (TypeManager.CheckGeneric (t, num_type_args))
 486                                                 return t;
 487                                         else
 488                                                 continue;
 489                                 }
 490
 491                                 return null;
 492                         }
 493
 494                         return null;
 495                 }
 496
 497                 static public Type LookupType (DeclSpace ds, string name, bool silent,
 498                                                Location loc)
 499                 {
 500                         return LookupType (ds, name, silent, 0, loc);
 501                 }
 502
 503                 //
 504                 // Public function used to locate types, this can only
 505                 // be used after the ResolveTree function has been invoked.
 506                 //
 507                 // Returns: Type or null if they type can not be found.
 508                 //
 509                 // Come to think of it, this should be a DeclSpace
 510                 //
 511                 static public Type LookupType (DeclSpace ds, string name, bool silent,
 512                                                int num_type_params, Location loc)
 513                 {
 514                         Type t;
 515
 516                         if (ds.Cache.Contains (name)){
 517                                 t = (Type) ds.Cache [name];
 518                                 if (t != null)
 519                                         return t;
 520                         } else {
 521                                 //
 522                                 // For the case the type we are looking for is nested within this one
 523                                 // or is in any base class
 524                                 //
 525                                 DeclSpace containing_ds = ds;
 526                                 while (containing_ds != null){
 527                                         Type current_type = containing_ds.TypeBuilder;
 528
 529                                         while (current_type != null) {
 530                                                 //
 531                                                 // nested class
 532                                                 //
 533                                                 t = TypeManager.LookupType (current_type.FullName + "." + name);
 534                                                 if (t != null){
 535                                                         ds.Cache [name] = t;
 536                                                         return t;
 537                                                 }
 538
 539                                                 current_type = current_type.BaseType;
 540                                         }
 541
 542                                         containing_ds = containing_ds.Parent;
 543                                 }
 544
 545                                 t = NamespaceLookup (ds, name, num_type_params, loc);
 546                                 if (t != null){
 547                                         ds.Cache [name] = t;
 548                                         return t;
 549                                 }
 550                         }
 551
 552                         if (!silent)
 553                                 Report.Error (246, loc, "Cannot find type `"+name+"'");
 554
 555                         return null;
 556                 }
 557
 558                 // <summary>
 559                 //   This is the silent version of LookupType, you can use this
 560                 //   to `probe' for a type
 561                 // </summary>
 562                 static public Type LookupType (TypeContainer tc, string name, Location loc)
 563                 {
 564                         return LookupType (tc, name, true, loc);
 565                 }
 566
 567                 static public bool IsNamespace (string name)
 568                 {
 569                         Namespace ns;
 570
 571                         if (tree.Namespaces != null){
 572                                 ns = (Namespace) tree.Namespaces [name];
 573
 574                                 if (ns != null)
 575                                         return true;
 576                         }
 577
 578                         return false;
 579                 }
 580
 581                 static void Report1530 (Location loc)
 582                 {
 583                         Report.Error (1530, loc, "Keyword new not allowed for namespace elements");
 584                 }
 585
 586                 static public void PopulateCoreType (TypeContainer root, string name)
 587                 {
 588                         DeclSpace ds = (DeclSpace) root.GetDefinition (name);
 589
 590                         ds.DefineMembers (root);
 591                         ds.Define (root);
 592                 }
 593
 594                 static public void BootCorlib_PopulateCoreTypes ()
 595                 {
 596                         TypeContainer root = tree.Types;
 597
 598                         PopulateCoreType (root, "System.Object");
 599                         PopulateCoreType (root, "System.ValueType");
 600                         PopulateCoreType (root, "System.Attribute");
 601                 }
 602
 603                 // <summary>
 604                 //   Populates the structs and classes with fields and methods
 605                 // </summary>
 606                 //
 607                 // This is invoked after all interfaces, structs and classes
 608                 // have been defined through `ResolveTree'
 609                 static public void PopulateTypes ()
 610                 {
 611                         TypeContainer root = Tree.Types;
 612
 613                         if (attribute_types != null)
 614                                 foreach (TypeContainer tc in attribute_types)
 615                                         tc.DefineMembers (root);
 616
 617                         if (interface_resolve_order != null){
 618                                 foreach (Interface iface in interface_resolve_order)
 619                                         if ((iface.ModFlags & Modifiers.NEW) == 0)
 620                                                 iface.DefineMembers (root);
 621                                         else
 622                                                 Report1530 (iface.Location);
 623                         }
 624
 625
 626                         if (type_container_resolve_order != null){
 627                                 if (RootContext.StdLib){
 628                                         foreach (TypeContainer tc in type_container_resolve_order)
 629                                                 tc.DefineMembers (root);
 630                                 } else {
 631                                         foreach (TypeContainer tc in type_container_resolve_order) {
 632                                                 // When compiling corlib, these types have already been
 633                                                 // populated from BootCorlib_PopulateCoreTypes ().
 634                                                 if (((tc.Name == "System.Object") ||
 635                                                      (tc.Name == "System.Attribute") ||
 636                                                      (tc.Name == "System.ValueType")))
 637                                                 continue;
 638
 639                                                 tc.DefineMembers (root);
 640                                         }
 641                                 }
 642                         }
 643
 644                         ArrayList delegates = root.Delegates;
 645                         if (delegates != null){
 646                                 foreach (Delegate d in delegates)
 647                                         if ((d.ModFlags & Modifiers.NEW) == 0)
 648                                                 d.DefineMembers (root);
 649                                         else
 650                                                 Report1530 (d.Location);
 651                         }
 652
 653                         ArrayList enums = root.Enums;
 654                         if (enums != null){
 655                                 foreach (Enum en in enums)
 656                                         if ((en.ModFlags & Modifiers.NEW) == 0)
 657                                                 en.DefineMembers (root);
 658                                         else
 659                                                 Report1530 (en.Location);
 660                         }
 661                 }
 662
 663                 //
 664                 // A generic hook delegate
 665                 //
 666                 public delegate void Hook ();
 667
 668                 //
 669                 // A hook invoked when the code has been generated.
 670                 //
 671                 public static event Hook EmitCodeHook;
 672
 673                 //
 674                 // DefineTypes is used to fill in the members of each type.
 675                 //
 676                 static public void DefineTypes ()
 677                 {
 678                         TypeContainer root = Tree.Types;
 679
 680                         if (attribute_types != null)
 681                                 foreach (TypeContainer tc in attribute_types)
 682                                         tc.Define (root);
 683
 684                         if (interface_resolve_order != null){
 685                                 foreach (Interface iface in interface_resolve_order)
 686                                         if ((iface.ModFlags & Modifiers.NEW) == 0)
 687                                                 iface.Define (root);
 688                         }
 689
 690
 691                         if (type_container_resolve_order != null){
 692                                 foreach (TypeContainer tc in type_container_resolve_order) {
 693                                         // When compiling corlib, these types have already been
 694                                         // populated from BootCorlib_PopulateCoreTypes ().
 695                                         if (!RootContext.StdLib &&
 696                                             ((tc.Name == "System.Object") ||
 697                                              (tc.Name == "System.Attribute") ||
 698                                              (tc.Name == "System.ValueType")))
 699                                                 continue;
 700
 701                                         if ((tc.ModFlags & Modifiers.NEW) == 0)
 702                                                 tc.Define (root);
 703                                 }
 704                         }
 705
 706                         ArrayList delegates = root.Delegates;
 707                         if (delegates != null){
 708                                 foreach (Delegate d in delegates)
 709                                         if ((d.ModFlags & Modifiers.NEW) == 0)
 710                                                 d.Define (root);
 711                         }
 712
 713                         ArrayList enums = root.Enums;
 714                         if (enums != null){
 715                                 foreach (Enum en in enums)
 716                                         if ((en.ModFlags & Modifiers.NEW) == 0)
 717                                                 en.Define (root);
 718                         }
 719                 }
 720
 721                 static public void EmitCode ()
 722                 {
 723                         //
 724                         // Because of the strange way in which we do things, global
 725                         // attributes must be processed first.
 726                         //
 727                         CodeGen.Assembly.Emit ();
 728                         CodeGen.Module.Emit ();
 729
 730                         if (attribute_types != null)
 731                                 foreach (TypeContainer tc in attribute_types)
 732                                         tc.Emit ();
 733
 734                         if (interface_resolve_order != null){
 735                                 foreach (Interface iface in interface_resolve_order)
 736                                         iface.Emit ();
 737                         }
 738
 739                         if (type_container_resolve_order != null) {
 740                                 foreach (TypeContainer tc in type_container_resolve_order)
 741                                         tc.EmitConstants ();
 742
 743                                 foreach (TypeContainer tc in type_container_resolve_order)
 744                                         tc.Emit ();
 745                         }
 746
 747                         //
 748                         // Run any hooks after all the types have been defined.
 749                         // This is used to create nested auxiliary classes for example
 750                         //
 751
 752                         if (EmitCodeHook != null)
 753                                 EmitCodeHook ();
 754                 }
 755
 756                 //
 757                 // Public Field, used to track which method is the public entry
 758                 // point.
 759                 //
 760                 static public MethodInfo EntryPoint;
 761
 762                 //
 763                 // Track the location of the entry point.
 764                 //
 765                 static public Location EntryPointLocation;
 766
 767                 //
 768                 // These are used to generate unique names on the structs and fields.
 769                 //
 770                 static int field_count;
 771
 772                 //
 773                 // Makes an initialized struct, returns the field builder that
 774                 // references the data.  Thanks go to Sergey Chaban for researching
 775                 // how to do this.  And coming up with a shorter mechanism than I
 776                 // was able to figure out.
 777                 //
 778                 // This works but makes an implicit public struct $ArrayType$SIZE and
 779                 // makes the fields point to it.  We could get more control if we did
 780                 // use instead:
 781                 //
 782                 // 1. DefineNestedType on the impl_details_class with our struct.
 783                 //
 784                 // 2. Define the field on the impl_details_class
 785                 //
 786                 static public FieldBuilder MakeStaticData (byte [] data)
 787                 {
 788                         FieldBuilder fb;
 789
 790                         if (impl_details_class == null){
 791                                 impl_details_class = CodeGen.Module.Builder.DefineType (
 792                                         "<PrivateImplementationDetails>",
 793                                         TypeAttributes.NotPublic,
 794                                         TypeManager.object_type);
 795
 796                                 RegisterHelperClass (impl_details_class);
 797                         }
 798
 799                         fb = impl_details_class.DefineInitializedData (
 800                                 "$$field-" + (field_count++), data,
 801                                 FieldAttributes.Static | FieldAttributes.Assembly);
 802
 803                         return fb;
 804                 }
 805         }
 806 }
 807
 808