mcs/ilasm/codegen/TypeDef.cs

   1 //
   2 // Mono.ILASM.TypeDef
   3 //
   4 // Author(s):
   5 //  Jackson Harper (Jackson@LatitudeGeo.com)
   6 //
   7 // (C) 2003 Jackson Harper, All rights reserved
   8 //
   9
  10
  11 using System;
  12 using System.Collections;
  13 using System.Security;
  14
  15 namespace Mono.ILASM {
  16
  17         public class TypeDef : ICustomAttrTarget, IDeclSecurityTarget, IComparable {
  18
  19                 private PEAPI.TypeAttr attr;
  20                 private string name_space;
  21                 private string name;
  22                 private bool is_defined;
  23                 private bool is_intransit;
  24                 private BaseClassRef parent;
  25                 private ArrayList impl_list;
  26                 private PEAPI.ClassDef classdef;
  27                 private Hashtable field_table;
  28                 private ArrayList field_list;
  29                 private Hashtable method_table;
  30                 private ArrayList method_list;
  31                 private ArrayList customattr_list;
  32                 private DeclSecurity decl_sec;
  33                 private ArrayList event_list;
  34                 private ArrayList property_list;
  35                 private GenericParameters gen_params;
  36                 private ArrayList override_list;
  37                 private ArrayList override_long_list;
  38                 private TypeDef outer;
  39
  40                 private EventDef current_event;
  41                 private PropertyDef current_property;
  42
  43                 private int size;
  44                 private int pack;
  45
  46                 private bool is_value_class;
  47                 private bool is_enum_class;
  48
  49                 private Location location;
  50
  51                 public TypeDef (PEAPI.TypeAttr attr, string name_space, string name,
  52                                 BaseClassRef parent, ArrayList impl_list, Location location, GenericParameters gen_params, TypeDef outer)
  53                 {
  54                         this.attr = attr;
  55                         this.parent = parent;
  56                         this.impl_list = impl_list;
  57                         this.gen_params = gen_params;
  58                         this.outer = outer;
  59                         this.location = location;
  60
  61                         field_table = new Hashtable ();
  62                         field_list = new ArrayList ();
  63
  64                         method_table = new Hashtable ();
  65                         method_list = new ArrayList ();
  66
  67                         size = -1;
  68                         pack = -1;
  69
  70                         is_defined = false;
  71                         is_intransit = false;
  72
  73                         is_value_class = false;
  74                         is_enum_class = false;
  75
  76                         ResolveGenParams ();
  77
  78                         int lastdot = name.LastIndexOf ('.');
  79                         /* Namespace . name split should not be done for nested classes */
  80                         if (lastdot >= 0 && outer == null) {
  81                                 if (name_space == null || name_space == "")
  82                                         this.name_space = name.Substring (0, lastdot);
  83                                 else
  84                                         this.name_space = name_space + "." + name.Substring (0, lastdot);
  85                                 this.name = name.Substring (lastdot + 1);
  86                         } else {
  87                                 this.name_space = name_space;
  88                                 this.name = name;
  89                         }
  90
  91                         //Fixup attributes
  92                         if (IsInterface)
  93                                 this.attr |= PEAPI.TypeAttr.Abstract;
  94                 }
  95
  96                 public string Name {
  97                         get { return name; }
  98                 }
  99
 100                 public string FullName {
 101                         get { return MakeFullName (); }
 102                 }
 103
 104                 public string NestedFullName {
 105                         get { return (outer == null ? FullName : (outer.NestedFullName + "/" + FullName)); }
 106                 }
 107
 108                 public TypeDef OuterType {
 109                         get { return outer; }
 110                 }
 111
 112                 public PEAPI.ClassDef PeapiType {
 113                         get { return classdef; }
 114                 }
 115
 116                 public PEAPI.ClassDef ClassDef {
 117                         get { return classdef; }
 118                 }
 119
 120                 public bool IsGenericType {
 121                         get { return (gen_params == null); }
 122                 }
 123
 124                 public bool IsDefined {
 125                         get { return is_defined; }
 126                 }
 127
 128                 public EventDef CurrentEvent {
 129                         get { return current_event; }
 130                 }
 131
 132                 public PropertyDef CurrentProperty {
 133                         get { return current_property; }
 134                 }
 135
 136                 public bool IsInterface {
 137                         get { return (attr & PEAPI.TypeAttr.Interface) != 0; }
 138                 }
 139
 140                 public bool IsAbstract {
 141                         get { return (attr & PEAPI.TypeAttr.Abstract) != 0; }
 142                 }
 143
 144                 public GenericParameters TypeParameters {
 145                         get { return gen_params; }
 146                 }
 147
 148                 public DeclSecurity DeclSecurity {
 149                         get {
 150                                 if (decl_sec == null)
 151                                         decl_sec = new DeclSecurity ();
 152                                 return decl_sec;
 153                         }
 154                 }
 155
 156                 public void AddOverride (MethodDef body, BaseTypeRef parent, string name)
 157                 {
 158                         if (override_list == null)
 159                                 override_list = new ArrayList ();
 160                         override_list.Add (new DictionaryEntry (body,
 161                                            new DictionaryEntry (parent, name)));
 162                 }
 163
 164                 public void AddOverride (string sig, BaseMethodRef decl)
 165                 {
 166                         if (override_long_list == null)
 167                                 override_long_list = new ArrayList ();
 168                         override_long_list.Add (new DictionaryEntry (sig,
 169                                                                 decl));
 170                 }
 171
 172                 public void MakeValueClass ()
 173                 {
 174                         is_value_class = true;
 175                 }
 176
 177                 public void MakeEnumClass ()
 178                 {
 179                         is_enum_class = true;
 180                 }
 181
 182                 public void SetSize (int size)
 183                 {
 184                         this.size = size;
 185                 }
 186
 187                 public void SetPack (int pack)
 188                 {
 189                         this.pack = pack;
 190                 }
 191
 192                 public void AddFieldDef (FieldDef fielddef)
 193                 {
 194                         if (IsInterface && !fielddef.IsStatic) {
 195                                 Report.Warning ("Non-static field in interface, set to such");
 196                                 fielddef.Attributes |= PEAPI.FieldAttr.Static;
 197                         }
 198
 199                         DictionaryEntry entry = new DictionaryEntry (fielddef.Name, fielddef.Type.FullName);
 200                         if (field_table [entry] != null)
 201                                 Report.Error ("Duplicate field declaration: " + fielddef.Type.FullName + " " + fielddef.Name);
 202                         field_table.Add (entry, fielddef);
 203                         field_list.Add (fielddef);
 204                 }
 205
 206                 public void AddMethodDef (MethodDef methoddef)
 207                 {
 208                         if (IsInterface && !methoddef.IsStatic && (!methoddef.IsVirtual || !methoddef.IsAbstract)) {
 209                                 Report.Warning (methoddef.StartLocation, "Non-virtual or non-abstract instance method in interface, set to such");
 210                                 methoddef.Attributes |= PEAPI.MethAttr.Abstract | PEAPI.MethAttr.Virtual;
 211                         }
 212
 213                         if (method_table [methoddef.Signature] != null)
 214                                 Report.Error (methoddef.StartLocation, "Duplicate method declaration: " + methoddef.Signature);
 215
 216                         method_table.Add (methoddef.Signature, methoddef);
 217                         method_list.Add (methoddef);
 218                 }
 219
 220                 public void BeginEventDef (EventDef event_def)
 221                 {
 222                         if (current_event != null)
 223                                 Report.Error ("An event definition was not closed.");
 224
 225                         current_event = event_def;
 226                 }
 227
 228                 public void EndEventDef ()
 229                 {
 230                         if (event_list == null)
 231                                 event_list = new ArrayList ();
 232
 233                         event_list.Add (current_event);
 234                         current_event = null;
 235                 }
 236
 237                 public void BeginPropertyDef (PropertyDef property_def)
 238                 {
 239                         if (current_property != null)
 240                                 Report.Error ("A property definition was not closed.");
 241
 242                         current_property = property_def;
 243                 }
 244
 245                 public void EndPropertyDef ()
 246                 {
 247                         if (property_list == null)
 248                                 property_list = new ArrayList ();
 249
 250                         property_list.Add (current_property);
 251                         current_property = null;
 252                 }
 253
 254                 public void AddCustomAttribute (CustomAttr customattr)
 255                 {
 256                         if (customattr_list == null)
 257                                 customattr_list = new ArrayList ();
 258
 259                         customattr_list.Add (customattr);
 260                 }
 261
 262                 public GenericParameter GetGenericParam (string id)
 263                 {
 264                         if (gen_params == null)
 265                                 return null;
 266
 267                         return gen_params.GetGenericParam (id);
 268                 }
 269
 270                 public GenericParameter GetGenericParam (int index)
 271                 {
 272                         if (gen_params == null || index < 0 || index >= gen_params.Count)
 273                                 return null;
 274
 275                         return gen_params [index];
 276                 }
 277
 278                 public int GetGenericParamNum (string id)
 279                 {
 280                         if (gen_params == null)
 281                                 return -1;
 282
 283                         return gen_params.GetGenericParamNum (id);
 284                 }
 285
 286                 /* Resolve any GenParams in constraints, parent & impl_list */
 287                 private void ResolveGenParams ()
 288                 {
 289                         if (gen_params == null)
 290                                 return;
 291
 292                         gen_params.ResolveConstraints (gen_params, null);
 293
 294                         BaseGenericTypeRef gtr = parent as BaseGenericTypeRef;
 295                         if (gtr != null)
 296                                 gtr.Resolve (gen_params, null);
 297
 298                         if (impl_list == null)
 299                                 return;
 300
 301                         foreach (BaseClassRef impl in impl_list) {
 302                                 gtr = impl as BaseGenericTypeRef;
 303                                 if (gtr != null)
 304                                         gtr.Resolve (gen_params, null);
 305                         }
 306                 }
 307
 308                 private bool IsValueType (string ns, string name)
 309                 {
 310                         return (ns == "System" && name == "ValueType");
 311                 }
 312
 313                 private bool IsEnumType (string ns, string name)
 314                 {
 315                         return (ns == "System" && name == "Enum");
 316                 }
 317
 318                 public void Define (CodeGen code_gen)
 319                 {
 320                         if (is_defined)
 321                                 return;
 322
 323                         if (is_intransit) {
 324                                 // Circular definition
 325                                 Report.Error ("Circular definition of class: " + FullName);
 326                         }
 327
 328                         if (outer != null) {
 329                                 PEAPI.TypeAttr vis = attr & PEAPI.TypeAttr.VisibilityMask;
 330
 331                                 if (vis == PEAPI.TypeAttr.Private || vis == PEAPI.TypeAttr.Public) {
 332                                         /* Nested class, but attr not set accordingly. */
 333                                         Report.Warning (location, String.Format ("Nested class '{0}' has non-nested visibility, set to such.", NestedFullName));
 334                                         attr = attr ^ vis;
 335                                         attr |= (vis == PEAPI.TypeAttr.Public ? PEAPI.TypeAttr.NestedPublic : PEAPI.TypeAttr.NestedPrivate);
 336                                 }
 337                         }
 338
 339                         if (parent != null) {
 340                                 is_intransit = true;
 341                                 parent.Resolve (code_gen);
 342
 343                                 is_intransit = false;
 344                                 if (parent.PeapiClass == null) {
 345                                         Report.Error ("this type can not be a base type: "
 346                                                         + parent);
 347                                 }
 348
 349                                 if (IsValueType (parent.PeapiClass.nameSpace, parent.PeapiClass.name))
 350                                         is_value_class = true;
 351                                 else if (IsEnumType (parent.PeapiClass.nameSpace, parent.PeapiClass.name))
 352                                         is_enum_class = true;
 353
 354                                 if (!IsValueType (name_space, name) && !IsEnumType (name_space, name) &&
 355                                         is_value_class && (attr & PEAPI.TypeAttr.Sealed) == 0) {
 356
 357                                         Report.Warning (location, "Non-sealed value class, made sealed.");
 358                                         attr |= PEAPI.TypeAttr.Sealed;
 359                                 }
 360
 361                                 if (outer != null) {
 362                                         if (!outer.IsDefined)
 363                                                 outer.Define (code_gen);
 364                                         classdef = outer.PeapiType.AddNestedClass (attr,
 365                                                         name_space, name, parent.PeapiClass);
 366                                 } else {
 367                                         if (is_value_class || is_enum_class) {
 368                                                 // Should probably confirm that the parent is System.ValueType
 369                                                 classdef = code_gen.PEFile.AddValueClass (attr,
 370                                                         name_space, name, is_value_class ? PEAPI.ValueClass.ValueType : PEAPI.ValueClass.Enum);
 371                                         } else {
 372                                                 classdef = code_gen.PEFile.AddClass (attr,
 373                                                         name_space, name, parent.PeapiClass);
 374                                         }
 375                                 }
 376                         } else {
 377                                 if (outer != null) {
 378                                         if (!outer.IsDefined)
 379                                                 outer.Define (code_gen);
 380                                         classdef = outer.PeapiType.AddNestedClass (attr,
 381                                                 name_space, name);
 382                                 } else {
 383                                         if (is_value_class || is_enum_class) {
 384                                                 classdef = code_gen.PEFile.AddValueClass (attr,
 385                                                         name_space, name, is_value_class ? PEAPI.ValueClass.ValueType : PEAPI.ValueClass.Enum);
 386                                         } else {
 387                                                 classdef = code_gen.PEFile.AddClass (attr,
 388                                                         name_space, name);
 389                                         }
 390                                 }
 391                                 if (FullName == "System.Object")
 392                                         classdef.SpecialNoSuper ();
 393                         }
 394
 395                         is_defined = true;
 396
 397                         if (size != -1 || pack != -1)
 398                                 classdef.AddLayoutInfo ( (pack == -1) ? 1 : pack, (size == -1) ? 0 : size);
 399
 400                         if (impl_list != null) {
 401                                 foreach (BaseClassRef impl in impl_list) {
 402                                         impl.Resolve (code_gen);
 403                                         classdef.AddImplementedInterface (impl.PeapiClass);
 404                                 }
 405                         }
 406
 407                         if (gen_params != null)
 408                                 gen_params.Resolve (code_gen, classdef);
 409
 410                         is_intransit = false;
 411
 412                         code_gen.AddToDefineContentsList (this);
 413                 }
 414
 415                 public void DefineContents (CodeGen code_gen)
 416                 {
 417                         ArrayList fielddef_list = new ArrayList ();
 418                         foreach (FieldDef fielddef in field_list) {
 419                                 fielddef.Define (code_gen, classdef);
 420                                 fielddef_list.Add (fielddef.PeapiFieldDef);
 421                         }
 422
 423                         classdef.SetFieldOrder (fielddef_list);
 424
 425                         foreach (MethodDef methoddef in method_list) {
 426                                 methoddef.Define (code_gen);
 427                         }
 428
 429                         if (event_list != null) {
 430                                 foreach (EventDef eventdef in event_list) {
 431                                         eventdef.Define (code_gen, classdef);
 432                                 }
 433                         }
 434
 435                         if (property_list != null) {
 436                                 foreach (PropertyDef propdef in property_list) {
 437                                         propdef.Define (code_gen, classdef);
 438                                 }
 439
 440                         }
 441
 442                         if (customattr_list != null) {
 443                                 foreach (CustomAttr customattr in customattr_list) {
 444                                         customattr.AddTo (code_gen, classdef);
 445                                         if (customattr.IsSuppressUnmanaged (code_gen))
 446                                                 classdef.AddAttribute (PEAPI.TypeAttr.HasSecurity);
 447                                 }
 448                         }
 449
 450                         /// Add declarative security to this class
 451                         if (decl_sec != null) {
 452                                 decl_sec.AddTo (code_gen, classdef);
 453                                 classdef.AddAttribute (PEAPI.TypeAttr.HasSecurity);
 454                         }
 455
 456                         if (override_list != null) {
 457                                 foreach (DictionaryEntry entry in override_list) {
 458                                         MethodDef body = (MethodDef) entry.Key;
 459                                         DictionaryEntry decl = (DictionaryEntry) entry.Value;
 460                                         BaseTypeRef parent_type = (BaseTypeRef) decl.Key;
 461                                         parent_type.Resolve (code_gen);
 462                                         string over_name = (string) decl.Value;
 463                                         BaseMethodRef over_meth = parent_type.GetMethodRef (body.RetType,
 464                                                         body.CallConv, over_name, body.ParamTypeList (), body.GenParamCount);
 465                                         over_meth.Resolve (code_gen);
 466                                         classdef.AddMethodOverride (over_meth.PeapiMethod,
 467                                                         body.PeapiMethodDef);
 468                                 }
 469                         }
 470
 471                         if (override_long_list != null) {
 472                                 foreach (DictionaryEntry entry in override_long_list) {
 473                                         string sig = (string) entry.Key;
 474                                         BaseMethodRef decl = (BaseMethodRef) entry.Value;
 475                                         MethodDef body = (MethodDef) method_table[sig];
 476                                         decl.Resolve (code_gen);
 477                                         classdef.AddMethodOverride (decl.PeapiMethod,
 478                                                         body.PeapiMethodDef);
 479                                 }
 480                         }
 481                 }
 482
 483                 public PEAPI.Method ResolveMethod (BaseTypeRef ret_type, PEAPI.CallConv call_conv,
 484                         string name, BaseTypeRef [] param, int gen_param_count, CodeGen code_gen)
 485                 {
 486                         string signature = MethodDef.CreateSignature (ret_type, call_conv, name, param, gen_param_count, false);
 487                         MethodDef methoddef = (MethodDef) method_table[signature];
 488
 489                         if (methoddef != null)
 490                                 return methoddef.Resolve (code_gen, classdef);
 491                         return ResolveAsMethodRef (ret_type, call_conv, name, param, gen_param_count, code_gen);
 492                 }
 493
 494                 public PEAPI.Method ResolveVarargMethod (BaseTypeRef ret_type, PEAPI.CallConv call_conv,
 495                         string name, BaseTypeRef [] param, int gen_param_count, PEAPI.Type [] opt, CodeGen code_gen)
 496                 {
 497                         // Only MethodDef sig required to lookup in the method_table
 498                         string signature = MethodDef.CreateSignature (ret_type, call_conv, name, param, 0, false);
 499                         MethodDef methoddef = (MethodDef) method_table[signature];
 500                         if (methoddef != null) {
 501                                 methoddef.Resolve (code_gen, classdef);
 502                                 return methoddef.GetVarargSig (
 503                                                 opt,
 504                                                 MethodDef.CreateSignature (ret_type, call_conv, name, param, 0, true));
 505                         }
 506
 507                         return ResolveAsMethodRef (ret_type, call_conv, name, param, gen_param_count, code_gen);
 508                 }
 509
 510                 private PEAPI.Method ResolveAsMethodRef (BaseTypeRef ret_type, PEAPI.CallConv call_conv,
 511                         string name, BaseTypeRef [] param, int gen_param_count, CodeGen code_gen)
 512                 {
 513                         ExternTypeRef type_ref = code_gen.ThisModule.GetTypeRef (FullName, false);
 514                         ExternMethodRef methodref = (ExternMethodRef) type_ref.GetMethodRef (ret_type, call_conv, name, param, gen_param_count);
 515                         methodref.Resolve (code_gen);
 516
 517                         return methodref.PeapiMethod;
 518                 }
 519
 520                 public PEAPI.Field ResolveField (string name, BaseTypeRef ret_type, CodeGen code_gen)
 521                 {
 522                         FieldDef fielddef = (FieldDef) field_table[new DictionaryEntry (name, ret_type.FullName)];
 523                         if (fielddef !=null)
 524                                 return fielddef.Resolve (code_gen, classdef);
 525
 526                         ExternTypeRef type_ref = code_gen.ThisModule.GetTypeRef (FullName, false);
 527                         IFieldRef fieldref = type_ref.GetFieldRef (ret_type, name);
 528                         fieldref.Resolve (code_gen);
 529
 530                         return fieldref.PeapiField;
 531                 }
 532
 533                 private string MakeFullName ()
 534                 {
 535                         if (name_space == null || name_space == String.Empty)
 536                                 return name;
 537
 538                         return name_space + "." + name;
 539                 }
 540
 541                 public int CompareTo (object obj)
 542                 {
 543                         TypeDef type_def = (TypeDef) obj;
 544
 545                         return FullName.CompareTo (type_def.FullName);
 546                 }
 547         }
 548
 549 }
 550