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                 public static bool VerifyClsCompliance = true;
  66
  67                 //
  68                 // If set, enable C# version 2 features
  69                 //
  70                 public static bool V2 = true;
  71
  72                 //
  73                 // We keep strongname related info here because
  74                 // it's also used as complier options from CSC 8.x
  75                 //
  76                 public static string StrongNameKeyFile;
  77                 public static string StrongNameKeyContainer;
  78                 public static bool StrongNameDelaySign = false;
  79
  80                 //
  81                 // Constructor
  82                 //
  83                 static RootContext ()
  84                 {
  85                         tree = new Tree ();
  86                         interface_resolve_order = new ArrayList ();
  87                         type_container_resolve_order = new ArrayList ();
  88                 }
  89
  90                 public static bool NeedsEntryPoint {
  91                         get {
  92                                 return RootContext.Target == Target.Exe || RootContext.Target == Target.WinExe;
  93                         }
  94                 }
  95
  96                 static public Tree Tree {
  97                         get {
  98                                 return tree;
  99                         }
 100                 }
 101
 102                 static public string MainClass;
 103
 104                 public static void RegisterOrder (Interface iface)
 105                 {
 106                         interface_resolve_order.Add (iface);
 107                 }
 108
 109                 public static void RegisterOrder (TypeContainer tc)
 110                 {
 111                         type_container_resolve_order.Add (tc);
 112                 }
 113
 114                 public static void RegisterAttribute (TypeContainer tc)
 115                 {
 116                         if (attribute_types == null)
 117                                 attribute_types = new ArrayList ();
 118
 119                         attribute_types.Add (tc);
 120                 }
 121
 122                 //
 123                 // The default compiler checked state
 124                 //
 125                 static public bool Checked = false;
 126
 127                 //
 128                 // Whether to allow Unsafe code
 129                 //
 130                 static public bool Unsafe = false;
 131
 132                 static string MakeFQN (string nsn, string name)
 133                 {
 134                         if (nsn == "")
 135                                 return name;
 136                         return String.Concat (nsn, ".", name);
 137                 }
 138
 139                 // <remarks>
 140                 //   This function is used to resolve the hierarchy tree.
 141                 //   It processes interfaces, structs and classes in that order.
 142                 //
 143                 //   It creates the TypeBuilder's as it processes the user defined
 144                 //   types.
 145                 // </remarks>
 146                 static public void ResolveTree ()
 147                 {
 148                         //
 149                         // Process the attribute types separately and before anything else
 150                         //
 151                         if (attribute_types != null)
 152                                 foreach (TypeContainer tc in attribute_types)
 153                                         tc.DefineType ();
 154
 155                         //
 156                         // Interfaces are processed next, as classes and
 157                         // structs might inherit from an object or implement
 158                         // a set of interfaces, we need to be able to tell
 159                         // them appart by just using the TypeManager.
 160                         //
 161                         TypeContainer root = Tree.Types;
 162
 163                         ArrayList ifaces = root.Interfaces;
 164                         if (ifaces != null){
 165                                 foreach (Interface i in ifaces)
 166                                         i.DefineType ();
 167                         }
 168
 169                         foreach (TypeContainer tc in root.Types)
 170                                 tc.DefineType ();
 171
 172                         if (root.Delegates != null)
 173                                 foreach (Delegate d in root.Delegates)
 174                                         d.DefineType ();
 175
 176                         if (root.Enums != null)
 177                                 foreach (Enum e in root.Enums)
 178                                         e.DefineType ();
 179                 }
 180
 181                 static void Error_TypeConflict (string name, Location loc)
 182                 {
 183                         Report.Error (
 184                                 520, loc, "`" + name + "' conflicts with a predefined type");
 185                 }
 186
 187                 static void Error_TypeConflict (string name)
 188                 {
 189                         Report.Error (
 190                                 520, "`" + name + "' conflicts with a predefined type");
 191                 }
 192
 193                 //
 194                 // Resolves a single class during the corlib bootstrap process
 195                 //
 196                 static TypeBuilder BootstrapCorlib_ResolveClass (TypeContainer root, string name)
 197                 {
 198                         object o = root.GetDefinition (name);
 199                         if (o == null){
 200                                 Report.Error (518, "The predefined type `" + name + "' is not defined");
 201                                 return null;
 202                         }
 203
 204                         if (!(o is Class)){
 205                                 if (o is DeclSpace){
 206                                         DeclSpace d = (DeclSpace) o;
 207
 208                                         Error_TypeConflict (name, d.Location);
 209                                 } else
 210                                         Error_TypeConflict (name);
 211
 212                                 return null;
 213                         }
 214
 215                         return ((DeclSpace) o).DefineType ();
 216                 }
 217
 218                 //
 219                 // Resolves a struct during the corlib bootstrap process
 220                 //
 221                 static void BootstrapCorlib_ResolveStruct (TypeContainer root, string name)
 222                 {
 223                         object o = root.GetDefinition (name);
 224                         if (o == null){
 225                                 Report.Error (518, "The predefined type `" + name + "' is not defined");
 226                                 return;
 227                         }
 228
 229                         if (!(o is Struct)){
 230                                 if (o is DeclSpace){
 231                                         DeclSpace d = (DeclSpace) o;
 232
 233                                         Error_TypeConflict (name, d.Location);
 234                                 } else
 235                                         Error_TypeConflict (name);
 236
 237                                 return;
 238                         }
 239
 240                         ((DeclSpace) o).DefineType ();
 241                 }
 242
 243                 //
 244                 // Resolves a struct during the corlib bootstrap process
 245                 //
 246                 static void BootstrapCorlib_ResolveInterface (TypeContainer root, string name)
 247                 {
 248                         object o = root.GetDefinition (name);
 249                         if (o == null){
 250                                 Report.Error (518, "The predefined type `" + name + "' is not defined");
 251                                 return;
 252                         }
 253
 254                         if (!(o is Interface)){
 255                                 if (o is DeclSpace){
 256                                         DeclSpace d = (DeclSpace) o;
 257
 258                                         Error_TypeConflict (name, d.Location);
 259                                 } else
 260                                         Error_TypeConflict (name);
 261
 262                                 return;
 263                         }
 264
 265                         ((DeclSpace) o).DefineType ();
 266                 }
 267
 268                 //
 269                 // Resolves a delegate during the corlib bootstrap process
 270                 //
 271                 static void BootstrapCorlib_ResolveDelegate (TypeContainer root, string name)
 272                 {
 273                         object o = root.GetDefinition (name);
 274                         if (o == null){
 275                                 Report.Error (518, "The predefined type `" + name + "' is not defined");
 276                                 Environment.Exit (1);
 277                         }
 278
 279                         if (!(o is Delegate)){
 280                                 Error_TypeConflict (name);
 281                                 return;
 282                         }
 283
 284                         ((DeclSpace) o).DefineType ();
 285                 }
 286
 287
 288                 /// <summary>
 289                 ///    Resolves the core types in the compiler when compiling with --nostdlib
 290                 /// </summary>
 291                 static public void ResolveCore ()
 292                 {
 293                         TypeContainer root = Tree.Types;
 294
 295                         TypeManager.object_type = BootstrapCorlib_ResolveClass (root, "System.Object");
 296                         TypeManager.value_type = BootstrapCorlib_ResolveClass (root, "System.ValueType");
 297                         TypeManager.attribute_type = BootstrapCorlib_ResolveClass (root, "System.Attribute");
 298
 299                         string [] interfaces_first_stage = {
 300                                 "System.IComparable", "System.ICloneable",
 301                                 "System.IConvertible",
 302
 303                                 "System.Collections.IEnumerable",
 304                                 "System.Collections.ICollection",
 305                                 "System.Collections.IEnumerator",
 306                                 "System.Collections.IList",
 307                                 "System.IAsyncResult",
 308                                 "System.IDisposable",
 309
 310                                 "System.Runtime.Serialization.ISerializable",
 311
 312                                 "System.Reflection.IReflect",
 313                                 "System.Reflection.ICustomAttributeProvider"
 314                         };
 315
 316                         foreach (string iname in interfaces_first_stage)
 317                                 BootstrapCorlib_ResolveInterface (root, iname);
 318
 319                         //
 320                         // These are the base value types
 321                         //
 322                         string [] structs_first_stage = {
 323                                 "System.Byte",    "System.SByte",
 324                                 "System.Int16",   "System.UInt16",
 325                                 "System.Int32",   "System.UInt32",
 326                                 "System.Int64",   "System.UInt64",
 327                         };
 328
 329                         foreach (string cname in structs_first_stage)
 330                                 BootstrapCorlib_ResolveStruct (root, cname);
 331
 332                         //
 333                         // Now, we can load the enumerations, after this point,
 334                         // we can use enums.
 335                         //
 336                         TypeManager.InitEnumUnderlyingTypes ();
 337
 338                         string [] structs_second_stage = {
 339                                 "System.Single",  "System.Double",
 340                                 "System.Char",    "System.Boolean",
 341                                 "System.Decimal", "System.Void",
 342                                 "System.RuntimeFieldHandle",
 343                                 "System.RuntimeTypeHandle",
 344                                 "System.IntPtr",
 345                                 "System.TypedReference",
 346                                 "System.ArgIterator"
 347                         };
 348
 349                         foreach (string cname in structs_second_stage)
 350                                 BootstrapCorlib_ResolveStruct (root, cname);
 351
 352                         //
 353                         // These are classes that depends on the core interfaces
 354                         //
 355                         string [] classes_second_stage = {
 356                                 "System.Reflection.MemberInfo",
 357                                 "System.Type",
 358                                 "System.Exception",
 359                                 "System.Activator",
 360
 361                                 //
 362                                 // These are not really important in the order, but they
 363                                 // are used by the compiler later on (typemanager/CoreLookupType-d)
 364                                 //
 365                                 "System.Runtime.CompilerServices.RuntimeHelpers",
 366                                 "System.Reflection.DefaultMemberAttribute",
 367                                 "System.Threading.Monitor",
 368
 369                                 "System.AttributeUsageAttribute",
 370                                 "System.Runtime.InteropServices.DllImportAttribute",
 371                                 "System.Runtime.CompilerServices.MethodImplAttribute",
 372                                 "System.Runtime.InteropServices.MarshalAsAttribute",
 373                                 "System.Runtime.CompilerServices.NewConstraintAttribute",
 374                                 "System.Diagnostics.ConditionalAttribute",
 375                                 "System.ObsoleteAttribute",
 376                                 "System.ParamArrayAttribute",
 377                                 "System.CLSCompliantAttribute",
 378                                 "System.Security.UnverifiableCodeAttribute",
 379                                 "System.Runtime.CompilerServices.IndexerNameAttribute",
 380                                 "System.Runtime.InteropServices.InAttribute",
 381                                 "System.Runtime.InteropServices.StructLayoutAttribute",
 382                                 "System.Runtime.InteropServices.FieldOffsetAttribute",
 383                                 "System.InvalidOperationException",
 384                                 "System.MarshalByRefObject"
 385                         };
 386
 387                         // We must store them here before calling BootstrapCorlib_ResolveDelegate.
 388                         TypeManager.string_type = BootstrapCorlib_ResolveClass (root, "System.String");
 389                         TypeManager.enum_type = BootstrapCorlib_ResolveClass (root, "System.Enum");
 390                         TypeManager.array_type = BootstrapCorlib_ResolveClass (root, "System.Array");
 391                         TypeManager.multicast_delegate_type = BootstrapCorlib_ResolveClass (root, "System.MulticastDelegate");
 392                         TypeManager.delegate_type = BootstrapCorlib_ResolveClass (root, "System.Delegate");
 393
 394                         foreach (string cname in classes_second_stage)
 395                                 BootstrapCorlib_ResolveClass (root, cname);
 396
 397                         BootstrapCorlib_ResolveDelegate (root, "System.AsyncCallback");
 398                 }
 399
 400                 // <summary>
 401                 //   Closes all open types
 402                 // </summary>
 403                 //
 404                 // <remarks>
 405                 //   We usually use TypeBuilder types.  When we are done
 406                 //   creating the type (which will happen after we have added
 407                 //   methods, fields, etc) we need to "Define" them before we
 408                 //   can save the Assembly
 409                 // </remarks>
 410                 static public void CloseTypes ()
 411                 {
 412                         TypeContainer root = Tree.Types;
 413
 414                         if (root.Enums != null)
 415                                 foreach (Enum en in root.Enums)
 416                                         en.CloseType ();
 417
 418                         if (attribute_types != null)
 419                                 foreach (TypeContainer tc in attribute_types)
 420                                         tc.CloseType ();
 421
 422                         foreach (Interface iface in interface_resolve_order)
 423                                 iface.CloseType ();
 424
 425                         //
 426                         // We do this in two passes, first we close the structs,
 427                         // then the classes, because it seems the code needs it this
 428                         // way.  If this is really what is going on, we should probably
 429                         // make sure that we define the structs in order as well.
 430                         //
 431                         foreach (TypeContainer tc in type_container_resolve_order){
 432                                 if (tc is Struct && tc.Parent == tree.Types){
 433                                         tc.CloseType ();
 434                                 }
 435                         }
 436
 437                         foreach (TypeContainer tc in type_container_resolve_order){
 438                                 if (!(tc is Struct && tc.Parent == tree.Types))
 439                                         tc.CloseType ();
 440                         }
 441
 442                         if (root.Delegates != null)
 443                                 foreach (Delegate d in root.Delegates)
 444                                         d.CloseType ();
 445
 446
 447                         //
 448                         // If we have a <PrivateImplementationDetails> class, close it
 449                         //
 450                         if (helper_classes != null){
 451                                 foreach (TypeBuilder type_builder in helper_classes)
 452                                         type_builder.CreateType ();
 453                         }
 454
 455                         attribute_types = null;
 456                         interface_resolve_order = null;
 457                         type_container_resolve_order = null;
 458                         helper_classes = null;
 459                         tree = null;
 460                         TypeManager.CleanUp ();
 461                 }
 462
 463                 /// <summary>
 464                 ///   Used to register classes that need to be closed after all the
 465                 ///   user defined classes
 466                 /// </summary>
 467                 public static void RegisterHelperClass (TypeBuilder helper_class)
 468                 {
 469                         if (helper_classes == null)
 470                                 helper_classes = new ArrayList ();
 471                         helper_classes.Add (helper_class);
 472                 }
 473
 474                 //
 475                 // This idea is from Felix Arrese-Igor
 476                 //
 477                 // Returns : the implicit parent of a composite namespace string
 478                 //   eg. Implicit parent of A.B is A
 479                 //
 480                 static public string ImplicitParent (string ns)
 481                 {
 482                         int i = ns.LastIndexOf ('.');
 483                         if (i < 0)
 484                                 return null;
 485
 486                         return ns.Substring (0, i);
 487                 }
 488
 489                 static TypeExpr NamespaceLookup (DeclSpace ds, string name,
 490                                                  int num_type_args, bool silent, Location loc)
 491                 {
 492                         //
 493                         // Try in the current namespace and all its implicit parents
 494                         //
 495                         for (NamespaceEntry ns = ds.NamespaceEntry; ns != null; ns = ns.ImplicitParent) {
 496                                 IAlias result = ns.Lookup (ds, name, num_type_args, silent, loc);
 497
 498                                 if (result == null)
 499                                         continue;
 500
 501                                 if (!result.IsType)
 502                                         return null;
 503
 504                                 return result.Type;
 505                         }
 506
 507                         return null;
 508                 }
 509
 510                 static public TypeExpr LookupType (DeclSpace ds, string name, bool silent,
 511                                                    Location loc)
 512                 {
 513                         return LookupType (ds, name, silent, 0, loc);
 514                 }
 515
 516                 //
 517                 // Public function used to locate types, this can only
 518                 // be used after the ResolveTree function has been invoked.
 519                 //
 520                 // Returns: Type or null if they type can not be found.
 521                 //
 522                 // Come to think of it, this should be a DeclSpace
 523                 //
 524                 static public TypeExpr LookupType (DeclSpace ds, string name, bool silent,
 525                                                    int num_type_params, Location loc)
 526                 {
 527                         TypeExpr t;
 528
 529                         if (ds.Cache.Contains (name)){
 530                                 t = (TypeExpr) ds.Cache [name];
 531                                 if (t != null)
 532                                         return t;
 533                         } else {
 534                                 //
 535                                 // For the case the type we are looking for is nested within this one
 536                                 // or is in any base class
 537                                 //
 538                                 DeclSpace containing_ds = ds;
 539                                 while (containing_ds != null){
 540                                         Type current_type = containing_ds.TypeBuilder;
 541
 542                                         while (current_type != null) {
 543                                                 //
 544                                                 // nested class
 545                                                 //
 546                                                 Type type = TypeManager.LookupType (current_type.FullName + "." + name);
 547                                                 if (type != null){
 548                                                         t = new TypeExpression (type, loc);
 549                                                         ds.Cache [name] = t;
 550                                                         return t;
 551                                                 }
 552
 553                                                 current_type = current_type.BaseType;
 554                                         }
 555
 556                                         containing_ds = containing_ds.Parent;
 557                                 }
 558
 559                                 t = NamespaceLookup (ds, name, num_type_params, silent, loc);
 560                                 if (t != null){
 561                                         ds.Cache [name] = t;
 562                                         return t;
 563                                 }
 564                         }
 565
 566                         if (!silent)
 567                                 Report.Error (246, loc, "Cannot find type `"+name+"'");
 568
 569                         return null;
 570                 }
 571
 572                 // <summary>
 573                 //   This is the silent version of LookupType, you can use this
 574                 //   to `probe' for a type
 575                 // </summary>
 576                 static public TypeExpr LookupType (TypeContainer tc, string name, Location loc)
 577                 {
 578                         return LookupType (tc, name, true, loc);
 579                 }
 580
 581                 static public bool IsNamespace (string name)
 582                 {
 583                         Namespace ns;
 584
 585                         if (tree.Namespaces != null){
 586                                 ns = (Namespace) tree.Namespaces [name];
 587
 588                                 if (ns != null)
 589                                         return true;
 590                         }
 591
 592                         return false;
 593                 }
 594
 595                 static void Report1530 (Location loc)
 596                 {
 597                         Report.Error (1530, loc, "Keyword new not allowed for namespace elements");
 598                 }
 599
 600                 static public void PopulateCoreType (TypeContainer root, string name)
 601                 {
 602                         DeclSpace ds = (DeclSpace) root.GetDefinition (name);
 603
 604                         ds.DefineMembers (root);
 605                         ds.Define (root);
 606                 }
 607
 608                 static public void BootCorlib_PopulateCoreTypes ()
 609                 {
 610                         TypeContainer root = tree.Types;
 611
 612                         PopulateCoreType (root, "System.Object");
 613                         PopulateCoreType (root, "System.ValueType");
 614                         PopulateCoreType (root, "System.Attribute");
 615                 }
 616
 617                 // <summary>
 618                 //   Populates the structs and classes with fields and methods
 619                 // </summary>
 620                 //
 621                 // This is invoked after all interfaces, structs and classes
 622                 // have been defined through `ResolveTree'
 623                 static public void PopulateTypes ()
 624                 {
 625                         TypeContainer root = Tree.Types;
 626
 627                         if (attribute_types != null)
 628                                 foreach (TypeContainer tc in attribute_types)
 629                                         tc.DefineMembers (root);
 630
 631                         if (interface_resolve_order != null){
 632                                 foreach (Interface iface in interface_resolve_order)
 633                                         if ((iface.ModFlags & Modifiers.NEW) == 0)
 634                                                 iface.DefineMembers (root);
 635                                         else
 636                                                 Report1530 (iface.Location);
 637                         }
 638
 639
 640                         if (type_container_resolve_order != null){
 641                                 if (RootContext.StdLib){
 642                                         foreach (TypeContainer tc in type_container_resolve_order)
 643                                                 tc.DefineMembers (root);
 644                                 } else {
 645                                         foreach (TypeContainer tc in type_container_resolve_order) {
 646                                                 // When compiling corlib, these types have already been
 647                                                 // populated from BootCorlib_PopulateCoreTypes ().
 648                                                 if (((tc.Name == "System.Object") ||
 649                                                      (tc.Name == "System.Attribute") ||
 650                                                      (tc.Name == "System.ValueType")))
 651                                                 continue;
 652
 653                                                 tc.DefineMembers (root);
 654                                         }
 655                                 }
 656                         }
 657
 658                         ArrayList delegates = root.Delegates;
 659                         if (delegates != null){
 660                                 foreach (Delegate d in delegates)
 661                                         if ((d.ModFlags & Modifiers.NEW) == 0)
 662                                                 d.DefineMembers (root);
 663                                         else
 664                                                 Report1530 (d.Location);
 665                         }
 666
 667                         ArrayList enums = root.Enums;
 668                         if (enums != null){
 669                                 foreach (Enum en in enums)
 670                                         if ((en.ModFlags & Modifiers.NEW) == 0)
 671                                                 en.DefineMembers (root);
 672                                         else
 673                                                 Report1530 (en.Location);
 674                         }
 675
 676                         //
 677                         // Check for cycles in the struct layout
 678                         //
 679                         if (type_container_resolve_order != null){
 680                                 Hashtable seen = new Hashtable ();
 681                                 foreach (TypeContainer tc in type_container_resolve_order)
 682                                         TypeManager.CheckStructCycles (tc, seen);
 683                         }
 684                 }
 685
 686                 //
 687                 // A generic hook delegate
 688                 //
 689                 public delegate void Hook ();
 690
 691                 //
 692                 // A hook invoked when the code has been generated.
 693                 //
 694                 public static event Hook EmitCodeHook;
 695
 696                 //
 697                 // DefineTypes is used to fill in the members of each type.
 698                 //
 699                 static public void DefineTypes ()
 700                 {
 701                         TypeContainer root = Tree.Types;
 702
 703                         if (attribute_types != null)
 704                                 foreach (TypeContainer tc in attribute_types)
 705                                         tc.Define (root);
 706
 707                         if (interface_resolve_order != null){
 708                                 foreach (Interface iface in interface_resolve_order)
 709                                         if ((iface.ModFlags & Modifiers.NEW) == 0)
 710                                                 iface.Define (root);
 711                         }
 712
 713
 714                         if (type_container_resolve_order != null){
 715                                 foreach (TypeContainer tc in type_container_resolve_order) {
 716                                         // When compiling corlib, these types have already been
 717                                         // populated from BootCorlib_PopulateCoreTypes ().
 718                                         if (!RootContext.StdLib &&
 719                                             ((tc.Name == "System.Object") ||
 720                                              (tc.Name == "System.Attribute") ||
 721                                              (tc.Name == "System.ValueType")))
 722                                                 continue;
 723
 724                                         if ((tc.ModFlags & Modifiers.NEW) == 0)
 725                                                 tc.Define (root);
 726                                 }
 727                         }
 728
 729                         ArrayList delegates = root.Delegates;
 730                         if (delegates != null){
 731                                 foreach (Delegate d in delegates)
 732                                         if ((d.ModFlags & Modifiers.NEW) == 0)
 733                                                 d.Define (root);
 734                         }
 735
 736                         ArrayList enums = root.Enums;
 737                         if (enums != null){
 738                                 foreach (Enum en in enums)
 739                                         if ((en.ModFlags & Modifiers.NEW) == 0)
 740                                                 en.Define (root);
 741                         }
 742                 }
 743
 744                 static public void EmitCode ()
 745                 {
 746                         if (attribute_types != null)
 747                                 foreach (TypeContainer tc in attribute_types)
 748                                         tc.Emit ();
 749
 750                         CodeGen.Assembly.Emit (Tree.Types);
 751                         CodeGen.Module.Emit (Tree.Types);
 752
 753                         if (Tree.Types.Enums != null) {
 754                                 foreach (Enum e in Tree.Types.Enums)
 755                                         e.Emit (Tree.Types);
 756                         }
 757
 758                         if (interface_resolve_order != null){
 759                                 foreach (Interface iface in interface_resolve_order)
 760                                         iface.Emit (Tree.Types);
 761                         }
 762
 763                         if (type_container_resolve_order != null) {
 764                                 foreach (TypeContainer tc in type_container_resolve_order)
 765                                         tc.EmitConstants ();
 766
 767                                 foreach (TypeContainer tc in type_container_resolve_order)
 768                                         tc.Emit ();
 769                         }
 770
 771                         if (Tree.Types.Delegates != null) {
 772                                 foreach (Delegate d in Tree.Types.Delegates)
 773                                         d.Emit (Tree.Types);
 774                         }
 775                         //
 776                         // Run any hooks after all the types have been defined.
 777                         // This is used to create nested auxiliary classes for example
 778                         //
 779
 780                         if (EmitCodeHook != null)
 781                                 EmitCodeHook ();
 782                 }
 783
 784                 //
 785                 // Public Field, used to track which method is the public entry
 786                 // point.
 787                 //
 788                 static public MethodInfo EntryPoint;
 789
 790                 //
 791                 // Track the location of the entry point.
 792                 //
 793                 static public Location EntryPointLocation;
 794
 795                 //
 796                 // These are used to generate unique names on the structs and fields.
 797                 //
 798                 static int field_count;
 799
 800                 //
 801                 // Makes an initialized struct, returns the field builder that
 802                 // references the data.  Thanks go to Sergey Chaban for researching
 803                 // how to do this.  And coming up with a shorter mechanism than I
 804                 // was able to figure out.
 805                 //
 806                 // This works but makes an implicit public struct $ArrayType$SIZE and
 807                 // makes the fields point to it.  We could get more control if we did
 808                 // use instead:
 809                 //
 810                 // 1. DefineNestedType on the impl_details_class with our struct.
 811                 //
 812                 // 2. Define the field on the impl_details_class
 813                 //
 814                 static public FieldBuilder MakeStaticData (byte [] data)
 815                 {
 816                         FieldBuilder fb;
 817
 818                         if (impl_details_class == null){
 819                                 impl_details_class = CodeGen.Module.Builder.DefineType (
 820                                         "<PrivateImplementationDetails>",
 821                                         TypeAttributes.NotPublic,
 822                                         TypeManager.object_type);
 823
 824                                 RegisterHelperClass (impl_details_class);
 825                         }
 826
 827                         fb = impl_details_class.DefineInitializedData (
 828                                 "$$field-" + (field_count++), data,
 829                                 FieldAttributes.Static | FieldAttributes.Assembly);
 830
 831                         return fb;
 832                 }
 833         }
 834 }
 835
 836