mcs/mcs/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                 // The list of global attributes (those that target the assembly)
  34                 //
  35                 static Hashtable global_attributes = new Hashtable ();
  36
  37                 //
  38                 // Whether we are being linked against the standard libraries.
  39                 // This is only used to tell whether `System.Object' should
  40                 // have a parent or not.
  41                 //
  42                 public static bool StdLib = true;
  43
  44                 //
  45                 // This keeps track of the order in which classes were defined
  46                 // so that we can poulate them in that order.
  47                 //
  48                 // Order is important, because we need to be able to tell by
  49                 // examining the parent's list of methods which ones are virtual
  50                 // or abstract as well as the parent names (to implement new,
  51                 // override).
  52                 //
  53                 static ArrayList type_container_resolve_order;
  54                 static ArrayList interface_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                 //
  71                 // If set, enable C# version 2 features
  72                 //
  73                 public static bool V2;
  74                 //
  75                 // Constructor
  76                 //
  77                 static RootContext ()
  78                 {
  79                         tree = new Tree ();
  80                         interface_resolve_order = new ArrayList ();
  81                         type_container_resolve_order = new ArrayList ();
  82                 }
  83
  84                 public static bool NeedsEntryPoint {
  85                         get {
  86                                 return RootContext.Target == Target.Exe || RootContext.Target == Target.WinExe;
  87                         }
  88                 }
  89
  90                 static public Tree Tree {
  91                         get {
  92                                 return tree;
  93                         }
  94                 }
  95
  96                 static public string MainClass;
  97
  98                 public static void RegisterOrder (Interface iface)
  99                 {
 100                         interface_resolve_order.Add (iface);
 101                 }
 102
 103                 public static void RegisterOrder (TypeContainer tc)
 104                 {
 105                         type_container_resolve_order.Add (tc);
 106                 }
 107
 108                 public static void RegisterAttribute (TypeContainer tc)
 109                 {
 110                         if (attribute_types == null)
 111                                 attribute_types = new ArrayList ();
 112
 113                         attribute_types.Add (tc);
 114                 }
 115
 116                 //
 117                 // The default compiler checked state
 118                 //
 119                 static public bool Checked = false;
 120
 121                 //
 122                 // Whether to allow Unsafe code
 123                 //
 124                 static public bool Unsafe = false;
 125
 126                 static string MakeFQN (string nsn, string name)
 127                 {
 128                         if (nsn == "")
 129                                 return name;
 130                         return String.Concat (nsn, ".", name);
 131                 }
 132
 133                 // <remarks>
 134                 //   This function is used to resolve the hierarchy tree.
 135                 //   It processes interfaces, structs and classes in that order.
 136                 //
 137                 //   It creates the TypeBuilder's as it processes the user defined
 138                 //   types.
 139                 // </remarks>
 140                 static public void ResolveTree ()
 141                 {
 142                         //
 143                         // Process the attribute types separately and before anything else
 144                         //
 145                         if (attribute_types != null)
 146                                 foreach (TypeContainer tc in attribute_types)
 147                                         tc.DefineType ();
 148
 149                         //
 150                         // Interfaces are processed next, as classes and
 151                         // structs might inherit from an object or implement
 152                         // a set of interfaces, we need to be able to tell
 153                         // them appart by just using the TypeManager.
 154                         //
 155                         TypeContainer root = Tree.Types;
 156
 157                         ArrayList ifaces = root.Interfaces;
 158                         if (ifaces != null){
 159                                 foreach (Interface i in ifaces)
 160                                         i.DefineType ();
 161                         }
 162
 163                         foreach (TypeContainer tc in root.Types)
 164                                 tc.DefineType ();
 165
 166                         if (root.Delegates != null)
 167                                 foreach (Delegate d in root.Delegates)
 168                                         d.DefineType ();
 169
 170                         if (root.Enums != null)
 171                                 foreach (Enum e in root.Enums)
 172                                         e.DefineType ();
 173                 }
 174
 175                 static void Error_TypeConflict (string name, Location loc)
 176                 {
 177                         Report.Error (
 178                                 520, loc, "`" + name + "' conflicts with a predefined type");
 179                 }
 180
 181                 static void Error_TypeConflict (string name)
 182                 {
 183                         Report.Error (
 184                                 520, "`" + name + "' conflicts with a predefined type");
 185                 }
 186
 187                 //
 188                 // Resolves a single class during the corlib bootstrap process
 189                 //
 190                 static TypeBuilder BootstrapCorlib_ResolveClass (TypeContainer root, string name)
 191                 {
 192                         object o = root.GetDefinition (name);
 193                         if (o == null){
 194                                 Report.Error (518, "The predefined type `" + name + "' is not defined");
 195                                 return null;
 196                         }
 197
 198                         if (!(o is Class)){
 199                                 if (o is DeclSpace){
 200                                         DeclSpace d = (DeclSpace) o;
 201
 202                                         Error_TypeConflict (name, d.Location);
 203                                 } else
 204                                         Error_TypeConflict (name);
 205
 206                                 return null;
 207                         }
 208
 209                         return ((DeclSpace) o).DefineType ();
 210                 }
 211
 212                 //
 213                 // Resolves a struct during the corlib bootstrap process
 214                 //
 215                 static void BootstrapCorlib_ResolveStruct (TypeContainer root, string name)
 216                 {
 217                         object o = root.GetDefinition (name);
 218                         if (o == null){
 219                                 Report.Error (518, "The predefined type `" + name + "' is not defined");
 220                                 return;
 221                         }
 222
 223                         if (!(o is Struct)){
 224                                 if (o is DeclSpace){
 225                                         DeclSpace d = (DeclSpace) o;
 226
 227                                         Error_TypeConflict (name, d.Location);
 228                                 } else
 229                                         Error_TypeConflict (name);
 230
 231                                 return;
 232                         }
 233
 234                         ((DeclSpace) o).DefineType ();
 235                 }
 236
 237                 //
 238                 // Resolves a struct during the corlib bootstrap process
 239                 //
 240                 static void BootstrapCorlib_ResolveInterface (TypeContainer root, string name)
 241                 {
 242                         object o = root.GetDefinition (name);
 243                         if (o == null){
 244                                 Report.Error (518, "The predefined type `" + name + "' is not defined");
 245                                 return;
 246                         }
 247
 248                         if (!(o is Interface)){
 249                                 if (o is DeclSpace){
 250                                         DeclSpace d = (DeclSpace) o;
 251
 252                                         Error_TypeConflict (name, d.Location);
 253                                 } else
 254                                         Error_TypeConflict (name);
 255
 256                                 return;
 257                         }
 258
 259                         ((DeclSpace) o).DefineType ();
 260                 }
 261
 262                 //
 263                 // Resolves a delegate during the corlib bootstrap process
 264                 //
 265                 static void BootstrapCorlib_ResolveDelegate (TypeContainer root, string name)
 266                 {
 267                         object o = root.GetDefinition (name);
 268                         if (o == null){
 269                                 Report.Error (518, "The predefined type `" + name + "' is not defined");
 270                                 Environment.Exit (0);
 271                         }
 272
 273                         if (!(o is Delegate)){
 274                                 Error_TypeConflict (name);
 275                                 return;
 276                         }
 277
 278                         ((DeclSpace) o).DefineType ();
 279                 }
 280
 281
 282                 /// <summary>
 283                 ///    Resolves the core types in the compiler when compiling with --nostdlib
 284                 /// </summary>
 285                 static public void ResolveCore ()
 286                 {
 287                         TypeContainer root = Tree.Types;
 288
 289                         TypeManager.object_type = BootstrapCorlib_ResolveClass (root, "System.Object");
 290                         TypeManager.value_type = BootstrapCorlib_ResolveClass (root, "System.ValueType");
 291                         TypeManager.attribute_type = BootstrapCorlib_ResolveClass (root, "System.Attribute");
 292
 293                         string [] interfaces_first_stage = {
 294                                 "System.IComparable", "System.ICloneable",
 295                                 "System.IConvertible",
 296
 297                                 "System.Collections.IEnumerable",
 298                                 "System.Collections.ICollection",
 299                                 "System.Collections.IEnumerator",
 300                                 "System.Collections.IList",
 301                                 "System.IAsyncResult",
 302                                 "System.IDisposable",
 303
 304                                 "System.Runtime.Serialization.ISerializable",
 305
 306                                 "System.Reflection.IReflect",
 307                                 "System.Reflection.ICustomAttributeProvider"
 308                         };
 309
 310                         foreach (string iname in interfaces_first_stage)
 311                                 BootstrapCorlib_ResolveInterface (root, iname);
 312
 313                         //
 314                         // These are the base value types
 315                         //
 316                         string [] structs_first_stage = {
 317                                 "System.Byte",    "System.SByte",
 318                                 "System.Int16",   "System.UInt16",
 319                                 "System.Int32",   "System.UInt32",
 320                                 "System.Int64",   "System.UInt64",
 321                         };
 322
 323                         foreach (string cname in structs_first_stage)
 324                                 BootstrapCorlib_ResolveStruct (root, cname);
 325
 326                         //
 327                         // Now, we can load the enumerations, after this point,
 328                         // we can use enums.
 329                         //
 330                         TypeManager.InitEnumUnderlyingTypes ();
 331
 332                         string [] structs_second_stage = {
 333                                 "System.Single",  "System.Double",
 334                                 "System.Char",    "System.Boolean",
 335                                 "System.Decimal", "System.Void",
 336                                 "System.RuntimeFieldHandle",
 337                                 "System.RuntimeTypeHandle",
 338                                 "System.IntPtr"
 339                         };
 340
 341                         foreach (string cname in structs_second_stage)
 342                                 BootstrapCorlib_ResolveStruct (root, cname);
 343
 344                         //
 345                         // These are classes that depends on the core interfaces
 346                         //
 347                         string [] classes_second_stage = {
 348                                 "System.Reflection.MemberInfo",
 349                                 "System.Type",
 350                                 "System.Exception",
 351
 352                                 //
 353                                 // These are not really important in the order, but they
 354                                 // are used by the compiler later on (typemanager/CoreLookupType-d)
 355                                 //
 356                                 "System.Runtime.CompilerServices.RuntimeHelpers",
 357                                 "System.Reflection.DefaultMemberAttribute",
 358                                 "System.Threading.Monitor",
 359
 360                                 "System.AttributeUsageAttribute",
 361                                 "System.Runtime.InteropServices.DllImportAttribute",
 362                                 "System.Runtime.CompilerServices.MethodImplAttribute",
 363                                 "System.Runtime.InteropServices.MarshalAsAttribute",
 364                                 "System.Diagnostics.ConditionalAttribute",
 365                                 "System.ObsoleteAttribute",
 366                                 "System.ParamArrayAttribute",
 367                                 "System.Security.UnverifiableCodeAttribute",
 368                                 "System.Runtime.CompilerServices.IndexerNameAttribute",
 369                                 "System.Runtime.InteropServices.InAttribute",
 370                                 "System.InvalidOperationException"
 371
 372                         };
 373
 374                         // We must store them here before calling BootstrapCorlib_ResolveDelegate.
 375                         TypeManager.string_type = BootstrapCorlib_ResolveClass (root, "System.String");
 376                         TypeManager.enum_type = BootstrapCorlib_ResolveClass (root, "System.Enum");
 377                         TypeManager.array_type = BootstrapCorlib_ResolveClass (root, "System.Array");
 378                         TypeManager.multicast_delegate_type = BootstrapCorlib_ResolveClass (root, "System.MulticastDelegate");
 379                         TypeManager.delegate_type = BootstrapCorlib_ResolveClass (root, "System.Delegate");
 380
 381                         foreach (string cname in classes_second_stage)
 382                                 BootstrapCorlib_ResolveClass (root, cname);
 383
 384                         BootstrapCorlib_ResolveDelegate (root, "System.AsyncCallback");
 385                 }
 386
 387                 // <summary>
 388                 //   Closes all open types
 389                 // </summary>
 390                 //
 391                 // <remarks>
 392                 //   We usually use TypeBuilder types.  When we are done
 393                 //   creating the type (which will happen after we have added
 394                 //   methods, fields, etc) we need to "Define" them before we
 395                 //   can save the Assembly
 396                 // </remarks>
 397                 static public void CloseTypes ()
 398                 {
 399                         TypeContainer root = Tree.Types;
 400
 401                         if (root.Enums != null)
 402                                 foreach (Enum en in root.Enums)
 403                                         en.CloseType ();
 404
 405                         if (attribute_types != null)
 406                                 foreach (TypeContainer tc in attribute_types)
 407                                         tc.CloseType ();
 408
 409                         foreach (Interface iface in interface_resolve_order)
 410                                 iface.CloseType ();
 411
 412                         //
 413                         // We do this in two passes, first we close the structs,
 414                         // then the classes, because it seems the code needs it this
 415                         // way.  If this is really what is going on, we should probably
 416                         // make sure that we define the structs in order as well.
 417                         //
 418                         foreach (TypeContainer tc in type_container_resolve_order){
 419                                 if (tc is Struct && tc.Parent == tree.Types){
 420                                         tc.CloseType ();
 421                                 }
 422                         }
 423
 424                         foreach (TypeContainer tc in type_container_resolve_order){
 425                                 if (!(tc is Struct && tc.Parent == tree.Types))
 426                                         tc.CloseType ();
 427                         }
 428
 429                         if (root.Delegates != null)
 430                                 foreach (Delegate d in root.Delegates)
 431                                         d.CloseType ();
 432
 433
 434                         //
 435                         // If we have a <PrivateImplementationDetails> class, close it
 436                         //
 437                         if (helper_classes != null){
 438                                 foreach (TypeBuilder type_builder in helper_classes)
 439                                         type_builder.CreateType ();
 440                         }
 441
 442                         attribute_types = null;
 443                         interface_resolve_order = null;
 444                         type_container_resolve_order = null;
 445                         helper_classes = null;
 446                         tree = null;
 447                         TypeManager.CleanUp ();
 448                 }
 449
 450                 /// <summary>
 451                 ///   Used to register classes that need to be closed after all the
 452                 ///   user defined classes
 453                 /// </summary>
 454                 public static void RegisterHelperClass (TypeBuilder helper_class)
 455                 {
 456                         if (helper_classes == null)
 457                                 helper_classes = new ArrayList ();
 458                         helper_classes.Add (helper_class);
 459                 }
 460
 461                 //
 462                 // This idea is from Felix Arrese-Igor
 463                 //
 464                 // Returns : the implicit parent of a composite namespace string
 465                 //   eg. Implicit parent of A.B is A
 466                 //
 467                 static public string ImplicitParent (string ns)
 468                 {
 469                         int i = ns.LastIndexOf ('.');
 470                         if (i < 0)
 471                                 return null;
 472
 473                         return ns.Substring (0, i);
 474                 }
 475
 476                 static Type NamespaceLookup (DeclSpace ds, string name, Location loc)
 477                 {
 478                         //
 479                         // Try in the current namespace and all its implicit parents
 480                         //
 481                         for (NamespaceEntry ns = ds.NamespaceEntry; ns != null; ns = ns.ImplicitParent) {
 482                                 object result = ns.Lookup (ds, name, loc);
 483                                 if (result == null)
 484                                         continue;
 485
 486                                 if (result is Type)
 487                                         return (Type) result;
 488
 489                                 return null;
 490                         }
 491
 492                         return null;
 493                 }
 494
 495                 //
 496                 // Public function used to locate types, this can only
 497                 // be used after the ResolveTree function has been invoked.
 498                 //
 499                 // Returns: Type or null if they type can not be found.
 500                 //
 501                 // Come to think of it, this should be a DeclSpace
 502                 //
 503                 static public Type LookupType (DeclSpace ds, string name, bool silent, Location loc)
 504                 {
 505                         Type t;
 506
 507                         if (ds.Cache.Contains (name)){
 508                                 t = (Type) ds.Cache [name];
 509                                 if (t != null)
 510                                         return t;
 511                         } else {
 512                                 //
 513                                 // For the case the type we are looking for is nested within this one
 514                                 // or is in any base class
 515                                 //
 516                                 DeclSpace containing_ds = ds;
 517                                 while (containing_ds != null){
 518                                         Type current_type = containing_ds.TypeBuilder;
 519
 520                                         while (current_type != null) {
 521                                                 //
 522                                                 // nested class
 523                                                 //
 524                                                 t = TypeManager.LookupType (current_type.FullName + "." + name);
 525                                                 if (t != null){
 526                                                         ds.Cache [name] = t;
 527                                                         return t;
 528                                                 }
 529
 530                                                 current_type = current_type.BaseType;
 531                                         }
 532
 533                                         containing_ds = containing_ds.Parent;
 534                                 }
 535
 536                                 t = NamespaceLookup (ds, name, loc);
 537                                 if (t != null){
 538                                         ds.Cache [name] = t;
 539                                         return t;
 540                                 }
 541                         }
 542
 543                         if (!silent)
 544                                 Report.Error (246, loc, "Cannot find type `"+name+"'");
 545
 546                         return null;
 547                 }
 548
 549                 // <summary>
 550                 //   This is the silent version of LookupType, you can use this
 551                 //   to `probe' for a type
 552                 // </summary>
 553                 static public Type LookupType (TypeContainer tc, string name, Location loc)
 554                 {
 555                         return LookupType (tc, name, true, loc);
 556                 }
 557
 558                 static public bool IsNamespace (string name)
 559                 {
 560                         Namespace ns;
 561
 562                         if (tree.Namespaces != null){
 563                                 ns = (Namespace) tree.Namespaces [name];
 564
 565                                 if (ns != null)
 566                                         return true;
 567                         }
 568
 569                         return false;
 570                 }
 571
 572                 static void Report1530 (Location loc)
 573                 {
 574                         Report.Error (1530, loc, "Keyword new not allowed for namespace elements");
 575                 }
 576
 577                 static public void PopulateCoreType (TypeContainer root, string name)
 578                 {
 579                         DeclSpace ds = (DeclSpace) root.GetDefinition (name);
 580
 581                         ds.DefineMembers (root);
 582                         ds.Define (root);
 583                 }
 584
 585                 static public void BootCorlib_PopulateCoreTypes ()
 586                 {
 587                         TypeContainer root = tree.Types;
 588
 589                         PopulateCoreType (root, "System.Object");
 590                         PopulateCoreType (root, "System.ValueType");
 591                         PopulateCoreType (root, "System.Attribute");
 592                 }
 593
 594                 // <summary>
 595                 //   Populates the structs and classes with fields and methods
 596                 // </summary>
 597                 //
 598                 // This is invoked after all interfaces, structs and classes
 599                 // have been defined through `ResolveTree'
 600                 static public void PopulateTypes ()
 601                 {
 602                         TypeContainer root = Tree.Types;
 603
 604                         if (attribute_types != null)
 605                                 foreach (TypeContainer tc in attribute_types)
 606                                         tc.DefineMembers (root);
 607
 608                         if (interface_resolve_order != null){
 609                                 foreach (Interface iface in interface_resolve_order)
 610                                         if ((iface.ModFlags & Modifiers.NEW) == 0)
 611                                                 iface.DefineMembers (root);
 612                                         else
 613                                                 Report1530 (iface.Location);
 614                         }
 615
 616
 617                         if (type_container_resolve_order != null){
 618                                 if (RootContext.StdLib){
 619                                         foreach (TypeContainer tc in type_container_resolve_order)
 620                                                 tc.DefineMembers (root);
 621                                 } else {
 622                                         foreach (TypeContainer tc in type_container_resolve_order) {
 623                                                 // When compiling corlib, these types have already been
 624                                                 // populated from BootCorlib_PopulateCoreTypes ().
 625                                                 if (((tc.Name == "System.Object") ||
 626                                                      (tc.Name == "System.Attribute") ||
 627                                                      (tc.Name == "System.ValueType")))
 628                                                 continue;
 629
 630                                                 tc.DefineMembers (root);
 631                                         }
 632                                 }
 633                         }
 634
 635                         ArrayList delegates = root.Delegates;
 636                         if (delegates != null){
 637                                 foreach (Delegate d in delegates)
 638                                         if ((d.ModFlags & Modifiers.NEW) == 0)
 639                                                 d.DefineMembers (root);
 640                                         else
 641                                                 Report1530 (d.Location);
 642                         }
 643
 644                         ArrayList enums = root.Enums;
 645                         if (enums != null){
 646                                 foreach (Enum en in enums)
 647                                         if ((en.ModFlags & Modifiers.NEW) == 0)
 648                                                 en.DefineMembers (root);
 649                                         else
 650                                                 Report1530 (en.Location);
 651                         }
 652                 }
 653
 654                 //
 655                 // A generic hook delegate
 656                 //
 657                 public delegate void Hook ();
 658
 659                 //
 660                 // A hook invoked when the code has been generated.
 661                 //
 662                 public static event Hook EmitCodeHook;
 663
 664                 //
 665                 // DefineTypes is used to fill in the members of each type.
 666                 //
 667                 static public void DefineTypes ()
 668                 {
 669                         TypeContainer root = Tree.Types;
 670
 671                         if (attribute_types != null)
 672                                 foreach (TypeContainer tc in attribute_types)
 673                                         tc.Define (root);
 674
 675                         if (interface_resolve_order != null){
 676                                 foreach (Interface iface in interface_resolve_order)
 677                                         if ((iface.ModFlags & Modifiers.NEW) == 0)
 678                                                 iface.Define (root);
 679                         }
 680
 681
 682                         if (type_container_resolve_order != null){
 683                                 foreach (TypeContainer tc in type_container_resolve_order) {
 684                                         // When compiling corlib, these types have already been
 685                                         // populated from BootCorlib_PopulateCoreTypes ().
 686                                         if (!RootContext.StdLib &&
 687                                             ((tc.Name == "System.Object") ||
 688                                              (tc.Name == "System.Attribute") ||
 689                                              (tc.Name == "System.ValueType")))
 690                                                 continue;
 691
 692                                         if ((tc.ModFlags & Modifiers.NEW) == 0)
 693                                                 tc.Define (root);
 694                                 }
 695                         }
 696
 697                         ArrayList delegates = root.Delegates;
 698                         if (delegates != null){
 699                                 foreach (Delegate d in delegates)
 700                                         if ((d.ModFlags & Modifiers.NEW) == 0)
 701                                                 d.Define (root);
 702                         }
 703
 704                         ArrayList enums = root.Enums;
 705                         if (enums != null){
 706                                 foreach (Enum en in enums)
 707                                         if ((en.ModFlags & Modifiers.NEW) == 0)
 708                                                 en.Define (root);
 709                         }
 710                 }
 711
 712                 static public void EmitCode ()
 713                 {
 714                         //
 715                         // Because of the strange way in which we do things, global
 716                         // attributes must be processed first.
 717                         //
 718                         if (global_attributes.Count > 0){
 719                                 AssemblyBuilder ab = CodeGen.AssemblyBuilder;
 720                                 TypeContainer dummy = new TypeContainer ();
 721                                 EmitContext temp_ec = new EmitContext (
 722                                         dummy, Mono.CSharp.Location.Null, null, null, 0, false);
 723
 724                                 foreach (DictionaryEntry de in global_attributes){
 725                                         NamespaceEntry ns = (NamespaceEntry) de.Key;
 726                                         Attributes attrs = (Attributes) de.Value;
 727
 728                                         dummy.NamespaceEntry = ns;
 729                                         Attribute.ApplyAttributes (temp_ec, ab, ab, attrs);
 730                                 }
 731                         }
 732
 733                         if (attribute_types != null)
 734                                 foreach (TypeContainer tc in attribute_types)
 735                                         tc.Emit ();
 736
 737                         if (interface_resolve_order != null){
 738                                 foreach (Interface iface in interface_resolve_order)
 739                                         iface.Emit (Tree.Types);
 740                         }
 741
 742                         if (type_container_resolve_order != null) {
 743                                 foreach (TypeContainer tc in type_container_resolve_order)
 744                                         tc.EmitConstants ();
 745
 746                                 foreach (TypeContainer tc in type_container_resolve_order)
 747                                         tc.Emit ();
 748                         }
 749
 750                         //
 751                         // Run any hooks after all the types have been defined.
 752                         // This is used to create nested auxiliary classes for example
 753                         //
 754
 755                         if (EmitCodeHook != null)
 756                                 EmitCodeHook ();
 757
 758
 759                         if (Unsafe) {
 760                                 if (TypeManager.unverifiable_code_ctor == null) {
 761                                         Console.WriteLine ("Internal error ! Cannot set unverifiable code attribute.");
 762                                         return;
 763                                 }
 764
 765                                 CustomAttributeBuilder cb = new CustomAttributeBuilder (TypeManager.unverifiable_code_ctor,
 766                                                                                         new object [0]);
 767                                 CodeGen.ModuleBuilder.SetCustomAttribute (cb);
 768                         }
 769                 }
 770
 771                 //
 772                 // Public Field, used to track which method is the public entry
 773                 // point.
 774                 //
 775                 static public MethodInfo EntryPoint;
 776
 777                 //
 778                 // Track the location of the entry point.
 779                 //
 780                 static public Location EntryPointLocation;
 781
 782                 //
 783                 // These are used to generate unique names on the structs and fields.
 784                 //
 785                 static int field_count;
 786
 787                 //
 788                 // Makes an initialized struct, returns the field builder that
 789                 // references the data.  Thanks go to Sergey Chaban for researching
 790                 // how to do this.  And coming up with a shorter mechanism than I
 791                 // was able to figure out.
 792                 //
 793                 // This works but makes an implicit public struct $ArrayType$SIZE and
 794                 // makes the fields point to it.  We could get more control if we did
 795                 // use instead:
 796                 //
 797                 // 1. DefineNestedType on the impl_details_class with our struct.
 798                 //
 799                 // 2. Define the field on the impl_details_class
 800                 //
 801                 static public FieldBuilder MakeStaticData (byte [] data)
 802                 {
 803                         FieldBuilder fb;
 804
 805                         if (impl_details_class == null){
 806                                 impl_details_class = CodeGen.ModuleBuilder.DefineType (
 807                                         "<PrivateImplementationDetails>",
 808                                         TypeAttributes.NotPublic,
 809                                         TypeManager.object_type);
 810
 811                                 RegisterHelperClass (impl_details_class);
 812                         }
 813
 814                         fb = impl_details_class.DefineInitializedData (
 815                                 "$$field-" + (field_count++), data,
 816                                 FieldAttributes.Static | FieldAttributes.Assembly);
 817
 818                         return fb;
 819                 }
 820
 821                 //
 822                 // Adds a global attribute that was declared in `container',
 823                 // the attribute is in `attr', and it was defined at `loc'
 824                 //
 825                 static public void AddGlobalAttributeSection (TypeContainer container, AttributeSection attr)
 826                 {
 827                         NamespaceEntry ns = container.NamespaceEntry;
 828                         Attributes a = (Attributes) global_attributes [ns];
 829
 830                         if (a == null)
 831                                 global_attributes [ns] = new Attributes (attr);
 832                         else
 833                                 a.AddAttributeSection (attr);
 834                 }
 835         }
 836 }
 837
 838