mono/metadata/class.c

   1 /*
   2  * class.c: Class management for the Mono runtime
   3  *
   4  * Author:
   5  *   Miguel de Icaza (miguel@ximian.com)
   6  *
   7  * (C) 2001 Ximian, Inc.
   8  *
   9  * Possible Optimizations:
  10  *     in mono_class_create, do not allocate the class right away,
  11  *     but wait until you know the size of the FieldMap, so that
  12  *     the class embeds directly the FieldMap after the vtable.
  13  *
  14  *
  15  */
  16 #include <config.h>
  17 #include <glib.h>
  18 #include <stdio.h>
  19 #include <string.h>
  20 #include <stdlib.h>
  21 #include <signal.h>
  22 #include <mono/metadata/image.h>
  23 #include <mono/metadata/assembly.h>
  24 #include <mono/metadata/cil-coff.h>
  25 #include <mono/metadata/metadata.h>
  26 #include <mono/metadata/tabledefs.h>
  27 #include <mono/metadata/tokentype.h>
  28 #include <mono/metadata/class.h>
  29 #include <mono/metadata/object.h>
  30 #include <mono/metadata/appdomain.h>
  31 #include <mono/metadata/mono-endian.h>
  32 #include <mono/metadata/debug-helpers.h>
  33 #include <mono/metadata/reflection.h>
  34 #include <mono/os/gc_wrapper.h>
  35
  36 MonoStats mono_stats;
  37
  38 gboolean mono_print_vtable = FALSE;
  39
  40 static MonoClass * mono_class_create_from_typedef (MonoImage *image, guint32 type_token);
  41
  42 void (*mono_debugger_class_init_func) (MonoClass *klass) = NULL;
  43
  44 MonoClass *
  45 mono_class_from_typeref (MonoImage *image, guint32 type_token)
  46 {
  47         guint32 cols [MONO_TYPEREF_SIZE];
  48         MonoTableInfo  *t = &image->tables [MONO_TABLE_TYPEREF];
  49         guint32 idx;
  50         const char *name, *nspace;
  51         MonoClass *res;
  52         MonoAssembly **references;
  53
  54         mono_metadata_decode_row (t, (type_token&0xffffff)-1, cols, MONO_TYPEREF_SIZE);
  55
  56         name = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAME]);
  57         nspace = mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAMESPACE]);
  58
  59         idx = cols [MONO_TYPEREF_SCOPE] >> RESOLTION_SCOPE_BITS;
  60         switch (cols [MONO_TYPEREF_SCOPE] & RESOLTION_SCOPE_MASK) {
  61         case RESOLTION_SCOPE_MODULE:
  62                 if (!idx)
  63                         g_error ("null ResolutionScope not yet handled");
  64                 /* a typedef in disguise */
  65                 return mono_class_from_name (image, nspace, name);
  66         case RESOLTION_SCOPE_MODULEREF:
  67                 return mono_class_from_name (image->modules [idx - 1], nspace, name);
  68         case RESOLTION_SCOPE_TYPEREF: {
  69                 MonoClass *enclosing = mono_class_from_typeref (image, MONO_TOKEN_TYPE_REF | idx);
  70                 GList *tmp;
  71                 mono_class_init (enclosing);
  72                 for (tmp = enclosing->nested_classes; tmp; tmp = tmp->next) {
  73                         res = tmp->data;
  74                         if (strcmp (res->name, name) == 0)
  75                                 return res;
  76                 }
  77                 g_warning ("TypeRef ResolutionScope not yet handled (%d)", idx);
  78                 return NULL;
  79         }
  80         case RESOLTION_SCOPE_ASSEMBLYREF:
  81                 break;
  82         }
  83
  84         references = image->references;
  85         if (!references ||  !references [idx-1]) {
  86                 /*
  87                  * detected a reference to mscorlib, we simply return a reference to a dummy
  88                  * until we have a better solution.
  89                  */
  90                 fprintf(stderr, "Sending dummy where %s.%s expected\n", mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAMESPACE]), mono_metadata_string_heap (image, cols [MONO_TYPEREF_NAME]));
  91
  92                 res = mono_class_from_name (image, "System", "MonoDummy");
  93                 /* prevent method loading */
  94                 res->dummy = 1;
  95                 /* some storage if the type is used  - very ugly hack */
  96                 res->instance_size = 2*sizeof (gpointer);
  97                 return res;
  98         }
  99
 100         /* load referenced assembly */
 101         image = references [idx-1]->image;
 102
 103         return mono_class_from_name (image, nspace, name);
 104 }
 105
 106 static MonoType*
 107 dup_type (MonoType* t)
 108 {
 109         MonoType *r = g_new0 (MonoType, 1);
 110         *r = *t;
 111         return r;
 112 }
 113
 114 static void
 115 mono_type_get_name_recurse (MonoType *type, GString *str)
 116 {
 117         MonoClass *klass;
 118
 119         switch (type->type) {
 120         case MONO_TYPE_ARRAY: {
 121                 int i, rank = type->data.array->rank;
 122
 123                 mono_type_get_name_recurse (&type->data.array->eklass->byval_arg, str);
 124                 g_string_append_c (str, '[');
 125                 for (i = 1; i < rank; i++)
 126                         g_string_append_c (str, ',');
 127                 g_string_append_c (str, ']');
 128                 break;
 129         }
 130         case MONO_TYPE_SZARRAY:
 131                 mono_type_get_name_recurse (&type->data.klass->byval_arg, str);
 132                 g_string_append (str, "[]");
 133                 break;
 134         case MONO_TYPE_PTR:
 135                 mono_type_get_name_recurse (type->data.type, str);
 136                 g_string_append_c (str, '*');
 137                 break;
 138         default:
 139                 klass = mono_class_from_mono_type (type);
 140                 if (klass->nested_in) {
 141                         mono_type_get_name_recurse (&klass->nested_in->byval_arg, str);
 142                         g_string_append_c (str, '+');
 143                 }
 144                 if (*klass->name_space) {
 145                         g_string_append (str, klass->name_space);
 146                         g_string_append_c (str, '.');
 147                 }
 148                 g_string_append (str, klass->name);
 149                 break;
 150         }
 151 }
 152
 153 /*
 154  * mono_type_get_name:
 155  * @type: a type
 156  *
 157  * Returns the string representation for type as required by System.Reflection.
 158  * The inverse of mono_reflection_parse_type ().
 159  */
 160 char*
 161 mono_type_get_name (MonoType *type)
 162 {
 163         GString* result = g_string_new ("");
 164         mono_type_get_name_recurse (type, result);
 165
 166         if (type->byref)
 167                 g_string_append_c (result, '&');
 168
 169         return g_string_free (result, FALSE);
 170 }
 171
 172 gboolean
 173 mono_class_is_open_constructed_type (MonoType *t)
 174 {
 175         switch (t->type) {
 176         case MONO_TYPE_VAR:
 177         case MONO_TYPE_MVAR:
 178                 return TRUE;
 179         case MONO_TYPE_SZARRAY:
 180                 return mono_class_is_open_constructed_type (&t->data.klass->byval_arg);
 181         case MONO_TYPE_ARRAY:
 182                 return mono_class_is_open_constructed_type (&t->data.array->eklass->byval_arg);
 183         case MONO_TYPE_PTR:
 184                 return mono_class_is_open_constructed_type (t->data.type);
 185         case MONO_TYPE_GENERICINST: {
 186                 MonoGenericInst *ginst = t->data.generic_inst;
 187                 int i;
 188
 189                 if (mono_class_is_open_constructed_type (ginst->generic_type))
 190                         return TRUE;
 191                 for (i = 0; i < ginst->type_argc; i++)
 192                         if (mono_class_is_open_constructed_type (ginst->type_argv [i]))
 193                                 return TRUE;
 194                 return FALSE;
 195         }
 196         default:
 197                 return FALSE;
 198         }
 199 }
 200
 201 MonoType*
 202 mono_class_inflate_generic_type (MonoType *type, MonoGenericInst *ginst)
 203 {
 204         switch (type->type) {
 205         case MONO_TYPE_MVAR:
 206                 if (ginst && ginst->mtype_argv)
 207                         return dup_type (ginst->mtype_argv [type->data.generic_param->num]);
 208                 else
 209                         return type;
 210         case MONO_TYPE_VAR: {
 211                 MonoType *t = ginst->type_argv [type->data.generic_param->num];
 212
 213                 if ((t->type == MONO_TYPE_VAR) || (t->type == MONO_TYPE_MVAR))
 214                         return type;
 215                 else
 216                         return dup_type (t);
 217         }
 218         case MONO_TYPE_SZARRAY: {
 219                 MonoClass *eclass = type->data.klass;
 220                 MonoClass *nclass;
 221                 MonoType *nt;
 222                 if (eclass->byval_arg.type == MONO_TYPE_MVAR) {
 223                         nclass = mono_class_from_mono_type (ginst->type_argv [eclass->byval_arg.data.generic_param->num]);
 224                 } else if (eclass->byval_arg.type == MONO_TYPE_VAR) {
 225                         nclass = mono_class_from_mono_type (ginst->type_argv [eclass->byval_arg.data.generic_param->num]);
 226                 } else {
 227                         return type;
 228                 }
 229                 nt = dup_type (type);
 230                 nt->data.klass = nclass;
 231                 return nt;
 232         }
 233         case MONO_TYPE_GENERICINST: {
 234                 MonoGenericInst *oginst = type->data.generic_inst;
 235                 MonoGenericInst *nginst;
 236                 MonoType *nt;
 237                 int i;
 238
 239                 nginst = g_new0 (MonoGenericInst, 1);
 240                 *nginst = *oginst;
 241
 242                 nginst->type_argv = g_new0 (MonoType *, oginst->type_argc);
 243
 244                 for (i = 0; i < oginst->type_argc; i++) {
 245                         MonoType *t = oginst->type_argv [i];
 246                         nginst->type_argv [i] = mono_class_inflate_generic_type (t, ginst);
 247                 };
 248
 249                 nt = dup_type (type);
 250                 nt->data.generic_inst = nginst;
 251                 return nt;
 252         }
 253         default:
 254                 return type;
 255         }
 256         return type;
 257 }
 258
 259 MonoMethodSignature*
 260 mono_class_inflate_generic_signature (MonoImage *image, MonoMethodSignature *sig, MonoGenericInst *ginst)
 261 {
 262         MonoMethodSignature *res;
 263         int i;
 264         res = mono_metadata_signature_alloc (image, sig->param_count);
 265         res->ret = mono_class_inflate_generic_type (sig->ret, ginst);
 266         for (i = 0; i < sig->param_count; ++i) {
 267                 res->params [i] = mono_class_inflate_generic_type (sig->params [i], ginst);
 268         }
 269         res->hasthis = sig->hasthis;
 270         res->explicit_this = sig->explicit_this;
 271         res->call_convention = sig->call_convention;
 272         res->generic_param_count = sig->generic_param_count;
 273         return res;
 274 }
 275
 276 static MonoMethodHeader*
 277 inflate_generic_header (MonoMethodHeader *header, MonoGenericInst *ginst)
 278 {
 279         MonoMethodHeader *res;
 280         int i;
 281         res = g_malloc0 (sizeof (MonoMethodHeader) + sizeof (gpointer) * header->num_locals);
 282         res->code = header->code;
 283         res->code_size = header->code_size;
 284         res->max_stack = header->max_stack;
 285         res->num_clauses = header->num_clauses;
 286         res->init_locals = header->init_locals;
 287         res->num_locals = header->num_locals;
 288         res->clauses = header->clauses;
 289         res->gen_params = header->gen_params;
 290         res->geninst = ginst;
 291         for (i = 0; i < header->num_locals; ++i) {
 292                 res->locals [i] = mono_class_inflate_generic_type (header->locals [i], ginst);
 293         }
 294         return res;
 295 }
 296
 297 MonoMethod*
 298 mono_class_inflate_generic_method (MonoMethod *method, MonoGenericInst *ginst)
 299 {
 300         MonoMethod *result;
 301         if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) || (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) {
 302                 MonoMethodPInvoke *nmethod = g_new0 (MonoMethodPInvoke, 1);
 303                 *nmethod = *(MonoMethodPInvoke*)method;
 304                 result = (MonoMethod*)nmethod;
 305         } else {
 306                 MonoMethodNormal *nmethod = g_new0 (MonoMethodNormal, 1);
 307                 *nmethod = *(MonoMethodNormal*)method;
 308                 result = (MonoMethod*)nmethod;
 309                 if (nmethod->header)
 310                         nmethod->header = inflate_generic_header (nmethod->header, ginst);
 311         }
 312         if (ginst->klass)
 313                 result->klass = ginst->klass;
 314         result->signature = mono_class_inflate_generic_signature (method->klass->image, result->signature, ginst);
 315         return result;
 316 }
 317
 318 /**
 319  * class_compute_field_layout:
 320  * @m: pointer to the metadata.
 321  * @class: The class to initialize
 322  *
 323  * Initializes the class->fields.
 324  *
 325  * Currently we only support AUTO_LAYOUT, and do not even try to do
 326  * a good job at it.  This is temporary to get the code for Paolo.
 327  */
 328 static void
 329 class_compute_field_layout (MonoClass *class)
 330 {
 331         MonoImage *m = class->image;
 332         const int top = class->field.count;
 333         guint32 layout = class->flags & TYPE_ATTRIBUTE_LAYOUT_MASK;
 334         MonoTableInfo *t = &m->tables [MONO_TABLE_FIELD];
 335         int i, blittable = TRUE, real_size = 0;
 336         guint32 rva;
 337         guint32 packing_size = 0;
 338         gboolean explicit_size;
 339         MonoClassField *field;
 340
 341         if (class->size_inited)
 342                 return;
 343
 344         if (class->parent) {
 345                 if (!class->parent->size_inited)
 346                         class_compute_field_layout (class->parent);
 347                 class->instance_size += class->parent->instance_size;
 348                 class->min_align = class->parent->min_align;
 349                 blittable = class->blittable;
 350         } else {
 351                 class->instance_size = sizeof (MonoObject);
 352                 class->min_align = 1;
 353         }
 354
 355         /* Get the real size */
 356         explicit_size = mono_metadata_packing_from_typedef (class->image, class->type_token, &packing_size, &real_size);
 357
 358         if (explicit_size) {
 359                 g_assert ((packing_size & 0xfffffff0) == 0);
 360                 class->packing_size = packing_size;
 361                 real_size += class->instance_size;
 362         }
 363
 364         if (!top) {
 365                 if (explicit_size && real_size) {
 366                         class->instance_size = MAX (real_size, class->instance_size);
 367                 }
 368                 class->size_inited = 1;
 369                 return;
 370         }
 371
 372         class->fields = g_new0 (MonoClassField, top);
 373
 374         /*
 375          * Fetch all the field information.
 376          */
 377         for (i = 0; i < top; i++){
 378                 const char *sig;
 379                 guint32 cols [MONO_FIELD_SIZE];
 380                 int idx = class->field.first + i;
 381
 382                 field = &class->fields [i];
 383                 mono_metadata_decode_row (t, idx, cols, MONO_FIELD_SIZE);
 384                 /* The name is needed for fieldrefs */
 385                 field->name = mono_metadata_string_heap (m, cols [MONO_FIELD_NAME]);
 386                 sig = mono_metadata_blob_heap (m, cols [MONO_FIELD_SIGNATURE]);
 387                 mono_metadata_decode_value (sig, &sig);
 388                 /* FIELD signature == 0x06 */
 389                 g_assert (*sig == 0x06);
 390                 field->type = mono_metadata_parse_field_type (
 391                         m, cols [MONO_FIELD_FLAGS], sig + 1, &sig);
 392                 if (mono_field_is_deleted (field))
 393                         continue;
 394                 if (class->generic_inst) {
 395                         field->type = mono_class_inflate_generic_type (field->type, class->generic_inst->data.generic_inst);
 396                         field->type->attrs = cols [MONO_FIELD_FLAGS];
 397                 }
 398
 399                 field->parent = class;
 400
 401                 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC)) {
 402                         if (field->type->byref) {
 403                                 blittable = FALSE;
 404                         } else {
 405                                 MonoClass *field_class = mono_class_from_mono_type (field->type);
 406                                 if (!field_class || !field_class->blittable)
 407                                         blittable = FALSE;
 408                         }
 409                 }
 410                 if (layout == TYPE_ATTRIBUTE_EXPLICIT_LAYOUT) {
 411                         mono_metadata_field_info (m, idx, &field->offset, NULL, NULL);
 412                         if (field->offset == (guint32)-1)
 413                                 g_warning ("%s not initialized correctly (missing field layout info for %s)", class->name, field->name);
 414                 }
 415
 416                 if (cols [MONO_FIELD_FLAGS] & FIELD_ATTRIBUTE_HAS_FIELD_RVA) {
 417                         mono_metadata_field_info (m, idx, NULL, &rva, NULL);
 418                         if (!rva)
 419                                 g_warning ("field %s in %s should have RVA data, but hasn't", field->name, class->name);
 420                         field->data = mono_cli_rva_map (class->image->image_info, rva);
 421                 }
 422
 423                 if (class->enumtype && !(cols [MONO_FIELD_FLAGS] & FIELD_ATTRIBUTE_STATIC)) {
 424                         class->enum_basetype = field->type;
 425                         class->cast_class = class->element_class = mono_class_from_mono_type (class->enum_basetype);
 426                         blittable = class->element_class->blittable;
 427                 }
 428
 429                 /* The def_value of fields is compute lazily during vtable creation */
 430         }
 431
 432         if (class == mono_defaults.string_class)
 433                 blittable = FALSE;
 434
 435         class->blittable = blittable;
 436
 437         if (class->enumtype && !class->enum_basetype) {
 438                 if (!((strcmp (class->name, "Enum") == 0) && (strcmp (class->name_space, "System") == 0)))
 439                         G_BREAKPOINT ();
 440         }
 441         if (explicit_size && real_size) {
 442                 class->instance_size = MAX (real_size, class->instance_size);
 443         }
 444
 445         if (class->gen_params)
 446                 return;
 447
 448         mono_class_layout_fields (class);
 449 }
 450
 451 void
 452 mono_class_layout_fields (MonoClass *class)
 453 {
 454         int i;
 455         const int top = class->field.count;
 456         guint32 layout = class->flags & TYPE_ATTRIBUTE_LAYOUT_MASK;
 457         guint32 pass, passes, real_size;
 458         gboolean gc_aware_layout = FALSE;
 459         MonoClassField *field;
 460
 461         /*
 462          * Enable GC aware auto layout: in this mode, reference
 463          * fields are grouped together inside objects, increasing collector
 464          * performance.
 465          * Requires that all classes whose layout is known to native code be annotated
 466          * with [StructLayout (LayoutKind.Sequential)]
 467          */
 468          /* corlib is missing [StructLayout] directives in many places */
 469         if (layout == TYPE_ATTRIBUTE_AUTO_LAYOUT) {
 470                 if (class->image != mono_defaults.corlib)
 471                         gc_aware_layout = TRUE;
 472         }
 473
 474         /*
 475          * Compute field layout and total size (not considering static fields)
 476          */
 477
 478         switch (layout) {
 479         case TYPE_ATTRIBUTE_AUTO_LAYOUT:
 480         case TYPE_ATTRIBUTE_SEQUENTIAL_LAYOUT:
 481
 482                 if (gc_aware_layout)
 483                         passes = 2;
 484                 else
 485                         passes = 1;
 486
 487                 if (layout != TYPE_ATTRIBUTE_AUTO_LAYOUT)
 488                         passes = 1;
 489
 490                 if (class->parent)
 491                         real_size = class->parent->instance_size;
 492                 else
 493                         real_size = sizeof (MonoObject);
 494
 495                 for (pass = 0; pass < passes; ++pass) {
 496                         for (i = 0; i < top; i++){
 497                                 int size, align;
 498                                 field = &class->fields [i];
 499
 500                                 if (mono_field_is_deleted (field))
 501                                         continue;
 502                                 if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
 503                                         continue;
 504
 505                                 if (gc_aware_layout) {
 506                                         /*
 507                                          * We process fields with reference type in the first pass,
 508                                          * and fields with non-reference type in the second pass.
 509                                          * We use IS_POINTER instead of IS_REFERENCE because in
 510                                          * some internal structures, we store GC_MALLOCed memory
 511                                          * in IntPtr fields...
 512                                          */
 513                                         if (MONO_TYPE_IS_POINTER (field->type)) {
 514                                                 if (pass == 1)
 515                                                         continue;
 516                                         } else {
 517                                                 if (pass == 0)
 518                                                         continue;
 519                                         }
 520                                 }
 521
 522                                 if ((top == 1) && (class->instance_size == sizeof (MonoObject)) &&
 523                                         (strcmp (field->name, "$PRIVATE$") == 0)) {
 524                                         /* This field is a hack inserted by MCS to empty structures */
 525                                         continue;
 526                                 }
 527
 528                                 size = mono_type_size (field->type, &align);
 529
 530                                 /* FIXME (LAMESPEC): should we also change the min alignment according to pack? */
 531                                 align = class->packing_size ? MIN (class->packing_size, align): align;
 532                                 class->min_align = MAX (align, class->min_align);
 533                                 field->offset = real_size;
 534                                 field->offset += align - 1;
 535                                 field->offset &= ~(align - 1);
 536                                 real_size = field->offset + size;
 537                         }
 538
 539                         class->instance_size = MAX (real_size, class->instance_size);
 540
 541                         if (class->instance_size & (class->min_align - 1)) {
 542                                 class->instance_size += class->min_align - 1;
 543                                 class->instance_size &= ~(class->min_align - 1);
 544                         }
 545                 }
 546                 break;
 547         case TYPE_ATTRIBUTE_EXPLICIT_LAYOUT:
 548                 real_size = 0;
 549                 for (i = 0; i < top; i++) {
 550                         int size, align;
 551                         field = &class->fields [i];
 552
 553                         /*
 554                          * There must be info about all the fields in a type if it
 555                          * uses explicit layout.
 556                          */
 557
 558                         if (mono_field_is_deleted (field))
 559                                 continue;
 560                         if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
 561                                 continue;
 562
 563                         size = mono_type_size (field->type, &align);
 564
 565                         /*
 566                          * When we get here, field->offset is already set by the
 567                          * loader (for either runtime fields or fields loaded from metadata).
 568                          * The offset is from the start of the object: this works for both
 569                          * classes and valuetypes.
 570                          */
 571                         field->offset += sizeof (MonoObject);
 572
 573                         /*
 574                          * Calc max size.
 575                          */
 576                         real_size = MAX (real_size, size + field->offset);
 577                 }
 578                 class->instance_size = MAX (real_size, class->instance_size);
 579                 break;
 580         }
 581
 582         class->size_inited = 1;
 583
 584         /*
 585          * Compute static field layout and size
 586          */
 587         for (i = 0; i < top; i++){
 588                 int size, align;
 589                 field = &class->fields [i];
 590
 591                 if (!(field->type->attrs & FIELD_ATTRIBUTE_STATIC))
 592                         continue;
 593                 if (mono_field_is_deleted (field))
 594                         continue;
 595
 596                 size = mono_type_size (field->type, &align);
 597                 field->offset = class->class_size;
 598                 field->offset += align - 1;
 599                 field->offset &= ~(align - 1);
 600                 class->class_size = field->offset + size;
 601         }
 602 }
 603
 604 static void
 605 init_properties (MonoClass *class)
 606 {
 607         guint startm, endm, i, j;
 608         guint32 cols [MONO_PROPERTY_SIZE];
 609         MonoTableInfo *pt = &class->image->tables [MONO_TABLE_PROPERTY];
 610         MonoTableInfo *msemt = &class->image->tables [MONO_TABLE_METHODSEMANTICS];
 611
 612         class->property.first = mono_metadata_properties_from_typedef (class->image, mono_metadata_token_index (class->type_token) - 1, &class->property.last);
 613         class->property.count = class->property.last - class->property.first;
 614
 615         class->properties = g_new0 (MonoProperty, class->property.count);
 616         for (i = class->property.first; i < class->property.last; ++i) {
 617                 mono_metadata_decode_row (pt, i, cols, MONO_PROPERTY_SIZE);
 618                 class->properties [i - class->property.first].attrs = cols [MONO_PROPERTY_FLAGS];
 619                 class->properties [i - class->property.first].name = mono_metadata_string_heap (class->image, cols [MONO_PROPERTY_NAME]);
 620
 621                 startm = mono_metadata_methods_from_property (class->image, i, &endm);
 622                 for (j = startm; j < endm; ++j) {
 623                         mono_metadata_decode_row (msemt, j, cols, MONO_METHOD_SEMA_SIZE);
 624                         switch (cols [MONO_METHOD_SEMA_SEMANTICS]) {
 625                         case METHOD_SEMANTIC_SETTER:
 626                                 class->properties [i - class->property.first].set = class->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - class->method.first];
 627                                 break;
 628                         case METHOD_SEMANTIC_GETTER:
 629                                 class->properties [i - class->property.first].get = class->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - class->method.first];
 630                                 break;
 631                         default:
 632                                 break;
 633                         }
 634                 }
 635         }
 636 }
 637
 638 static void
 639 init_events (MonoClass *class)
 640 {
 641         guint startm, endm, i, j;
 642         guint32 cols [MONO_EVENT_SIZE];
 643         MonoTableInfo *pt = &class->image->tables [MONO_TABLE_EVENT];
 644         MonoTableInfo *msemt = &class->image->tables [MONO_TABLE_METHODSEMANTICS];
 645
 646         class->event.first = mono_metadata_events_from_typedef (class->image, mono_metadata_token_index (class->type_token) - 1, &class->event.last);
 647         class->event.count = class->event.last - class->event.first;
 648
 649         class->events = g_new0 (MonoEvent, class->event.count);
 650         for (i = class->event.first; i < class->event.last; ++i) {
 651                 mono_metadata_decode_row (pt, i, cols, MONO_EVENT_SIZE);
 652                 class->events [i - class->event.first].attrs = cols [MONO_EVENT_FLAGS];
 653                 class->events [i - class->event.first].name = mono_metadata_string_heap (class->image, cols [MONO_EVENT_NAME]);
 654
 655                 startm = mono_metadata_methods_from_event (class->image, i, &endm);
 656                 for (j = startm; j < endm; ++j) {
 657                         mono_metadata_decode_row (msemt, j, cols, MONO_METHOD_SEMA_SIZE);
 658                         switch (cols [MONO_METHOD_SEMA_SEMANTICS]) {
 659                         case METHOD_SEMANTIC_ADD_ON:
 660                                 class->events [i - class->event.first].add = class->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - class->method.first];
 661                                 break;
 662                         case METHOD_SEMANTIC_REMOVE_ON:
 663                                 class->events [i - class->event.first].remove = class->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - class->method.first];
 664                                 break;
 665                         case METHOD_SEMANTIC_FIRE:
 666                                 class->events [i - class->event.first].raise = class->methods [cols [MONO_METHOD_SEMA_METHOD] - 1 - class->method.first];
 667                                 break;
 668                         case METHOD_SEMANTIC_OTHER: /* don't care for now */
 669                         default:
 670                                 break;
 671                         }
 672                 }
 673         }
 674 }
 675
 676 static guint
 677 mono_get_unique_iid (MonoClass *class)
 678 {
 679         static GHashTable *iid_hash = NULL;
 680         static guint iid = 0;
 681
 682         char *str;
 683         gpointer value;
 684
 685         g_assert (class->flags & TYPE_ATTRIBUTE_INTERFACE);
 686
 687         mono_loader_lock ();
 688
 689         if (!iid_hash)
 690                 iid_hash = g_hash_table_new (g_str_hash, g_str_equal);
 691
 692         str = g_strdup_printf ("%s|%s.%s\n", class->image->name, class->name_space, class->name);
 693
 694         if (g_hash_table_lookup_extended (iid_hash, str, NULL, &value)) {
 695                 mono_loader_unlock ();
 696                 g_free (str);
 697                 return (guint)value;
 698         } else {
 699                 g_hash_table_insert (iid_hash, str, (gpointer)iid);
 700                 ++iid;
 701         }
 702
 703         mono_loader_unlock ();
 704
 705         return iid - 1;
 706 }
 707
 708 static void
 709 collect_implemented_interfaces_aux (MonoClass *klass, GPtrArray **res)
 710 {
 711         int i;
 712         MonoClass *ic;
 713
 714         for (i = 0; i < klass->interface_count; i++) {
 715                 ic = klass->interfaces [i];
 716
 717                 if (*res == NULL)
 718                         *res = g_ptr_array_new ();
 719                 g_ptr_array_add (*res, ic);
 720
 721                 collect_implemented_interfaces_aux (ic, res);
 722         }
 723 }
 724
 725 static inline GPtrArray*
 726 collect_implemented_interfaces (MonoClass *klass)
 727 {
 728         GPtrArray *res = NULL;
 729
 730         collect_implemented_interfaces_aux (klass, &res);
 731         return res;
 732 }
 733
 734 static int
 735 setup_interface_offsets (MonoClass *class, int cur_slot)
 736 {
 737         MonoClass *k, *ic;
 738         int i, max_iid;
 739         GPtrArray *ifaces;
 740
 741         /* compute maximum number of slots and maximum interface id */
 742         max_iid = 0;
 743         for (k = class; k ; k = k->parent) {
 744                 for (i = 0; i < k->interface_count; i++) {
 745                         ic = k->interfaces [i];
 746
 747                         if (!ic->inited)
 748                                 mono_class_init (ic);
 749
 750                         if (max_iid < ic->interface_id)
 751                                 max_iid = ic->interface_id;
 752                 }
 753         }
 754
 755         if (class->flags & TYPE_ATTRIBUTE_INTERFACE) {
 756                 if (max_iid < class->interface_id)
 757                         max_iid = class->interface_id;
 758         }
 759         class->max_interface_id = max_iid;
 760         /* compute vtable offset for interfaces */
 761         class->interface_offsets = g_malloc (sizeof (gpointer) * (max_iid + 1));
 762
 763         for (i = 0; i <= max_iid; i++)
 764                 class->interface_offsets [i] = -1;
 765
 766         ifaces = collect_implemented_interfaces (class);
 767         if (ifaces) {
 768                 for (i = 0; i < ifaces->len; ++i) {
 769                         ic = g_ptr_array_index (ifaces, i);
 770                         class->interface_offsets [ic->interface_id] = cur_slot;
 771                         cur_slot += ic->method.count;
 772                 }
 773                 g_ptr_array_free (ifaces, TRUE);
 774         }
 775
 776         for (k = class->parent; k ; k = k->parent) {
 777                 ifaces = collect_implemented_interfaces (k);
 778                 if (ifaces) {
 779                         for (i = 0; i < ifaces->len; ++i) {
 780                                 ic = g_ptr_array_index (ifaces, i);
 781
 782                                 if (class->interface_offsets [ic->interface_id] == -1) {
 783                                         int io = k->interface_offsets [ic->interface_id];
 784
 785                                         g_assert (io >= 0);
 786
 787                                         class->interface_offsets [ic->interface_id] = io;
 788                                 }
 789                         }
 790                         g_ptr_array_free (ifaces, TRUE);
 791                 }
 792         }
 793
 794         if (class->flags & TYPE_ATTRIBUTE_INTERFACE)
 795                 class->interface_offsets [class->interface_id] = cur_slot;
 796
 797         return cur_slot;
 798 }
 799
 800 void
 801 mono_class_setup_vtable (MonoClass *class, MonoMethod **overrides, int onum)
 802 {
 803         MonoClass *k, *ic;
 804         MonoMethod **vtable;
 805         int i, max_vtsize = 0, max_iid, cur_slot = 0;
 806         GPtrArray *ifaces;
 807         MonoGHashTable *override_map = NULL;
 808
 809         /* setup_vtable() must be called only once on the type */
 810         if (class->interface_offsets) {
 811                 g_warning ("vtable already computed in %s.%s", class->name_space, class->name);
 812                 return;
 813         }
 814
 815         ifaces = collect_implemented_interfaces (class);
 816         if (ifaces) {
 817                 for (i = 0; i < ifaces->len; i++) {
 818                         MonoClass *ic = g_ptr_array_index (ifaces, i);
 819                         max_vtsize += ic->method.count;
 820                 }
 821                 g_ptr_array_free (ifaces, TRUE);
 822         }
 823
 824         if (class->parent) {
 825                 max_vtsize += class->parent->vtable_size;
 826                 cur_slot = class->parent->vtable_size;
 827         }
 828
 829         max_vtsize += class->method.count;
 830
 831         vtable = alloca (sizeof (gpointer) * max_vtsize);
 832         memset (vtable, 0, sizeof (gpointer) * max_vtsize);
 833
 834         /* printf ("METAINIT %s.%s\n", class->name_space, class->name); */
 835
 836         cur_slot = setup_interface_offsets (class, cur_slot);
 837         max_iid = class->max_interface_id;
 838
 839         if (class->parent && class->parent->vtable_size)
 840                 memcpy (vtable, class->parent->vtable,  sizeof (gpointer) * class->parent->vtable_size);
 841
 842         /* override interface methods */
 843         for (i = 0; i < onum; i++) {
 844                 MonoMethod *decl = overrides [i*2];
 845                 if (decl->klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
 846                         int dslot;
 847                         g_assert (decl->slot != -1);
 848                         dslot = decl->slot + class->interface_offsets [decl->klass->interface_id];
 849                         vtable [dslot] = overrides [i*2 + 1];
 850                         vtable [dslot]->slot = dslot;
 851                         if (!override_map)
 852                                 override_map = mono_g_hash_table_new (NULL, NULL);
 853
 854                         mono_g_hash_table_insert (override_map, overrides [i * 2], overrides [i * 2 + 1]);
 855                 }
 856         }
 857
 858         for (k = class; k ; k = k->parent) {
 859                 int nifaces = 0;
 860                 ifaces = collect_implemented_interfaces (k);
 861                 if (ifaces)
 862                         nifaces = ifaces->len;
 863                 for (i = 0; i < nifaces; i++) {
 864                         int j, l, io;
 865
 866                         ic = g_ptr_array_index (ifaces, i);
 867                         io = k->interface_offsets [ic->interface_id];
 868
 869                         g_assert (io >= 0);
 870                         g_assert (io <= max_vtsize);
 871
 872                         if (k == class) {
 873                                 for (l = 0; l < ic->method.count; l++) {
 874                                         MonoMethod *im = ic->methods [l];
 875
 876                                         if (vtable [io + l] && !(vtable [io + l]->flags & METHOD_ATTRIBUTE_ABSTRACT))
 877                                                 continue;
 878
 879                                         for (j = 0; j < class->method.count; ++j) {
 880                                                 MonoMethod *cm = class->methods [j];
 881                                                 if (!(cm->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
 882                                                     !((cm->flags & METHOD_ATTRIBUTE_MEMBER_ACCESS_MASK) == METHOD_ATTRIBUTE_PUBLIC) ||
 883                                                     !(cm->flags & METHOD_ATTRIBUTE_NEW_SLOT))
 884                                                         continue;
 885                                                 if (!strcmp(cm->name, im->name) &&
 886                                                     mono_metadata_signature_equal (cm->signature, im->signature)) {
 887                                                         g_assert (io + l <= max_vtsize);
 888                                                         vtable [io + l] = cm;
 889                                                 }
 890                                         }
 891                                 }
 892                         } else {
 893                                 /* already implemented */
 894                                 if (io >= k->vtable_size)
 895                                         continue;
 896                         }
 897
 898                         for (l = 0; l < ic->method.count; l++) {
 899                                 MonoMethod *im = ic->methods [l];
 900                                 MonoClass *k1;
 901
 902                                 g_assert (io + l <= max_vtsize);
 903
 904                                 if (vtable [io + l] && !(vtable [io + l]->flags & METHOD_ATTRIBUTE_ABSTRACT))
 905                                         continue;
 906
 907                                 for (k1 = class; k1; k1 = k1->parent) {
 908                                         for (j = 0; j < k1->method.count; ++j) {
 909                                                 MonoMethod *cm = k1->methods [j];
 910
 911                                                 if (!(cm->flags & METHOD_ATTRIBUTE_VIRTUAL) ||
 912                                                     !(cm->flags & METHOD_ATTRIBUTE_PUBLIC))
 913                                                         continue;
 914
 915                                                 if (!strcmp(cm->name, im->name) &&
 916                                                     mono_metadata_signature_equal (cm->signature, im->signature)) {
 917                                                         g_assert (io + l <= max_vtsize);
 918                                                         vtable [io + l] = cm;
 919                                                         break;
 920                                                 }
 921
 922                                         }
 923                                         g_assert (io + l <= max_vtsize);
 924                                         if (vtable [io + l] && !(vtable [io + l]->flags & METHOD_ATTRIBUTE_ABSTRACT))
 925                                                 break;
 926                                 }
 927                         }
 928
 929                         for (l = 0; l < ic->method.count; l++) {
 930                                 MonoMethod *im = ic->methods [l];
 931                                 char *qname, *fqname;
 932                                 MonoClass *k1;
 933
 934                                 if (vtable [io + l])
 935                                         continue;
 936
 937                                 qname = g_strconcat (ic->name, ".", im->name, NULL);
 938                                 if (ic->name_space && ic->name_space [0])
 939                                         fqname = g_strconcat (ic->name_space, ".", ic->name, ".", im->name, NULL);
 940                                 else
 941                                         fqname = NULL;
 942
 943                                 for (k1 = class; k1; k1 = k1->parent) {
 944                                         for (j = 0; j < k1->method.count; ++j) {
 945                                                 MonoMethod *cm = k1->methods [j];
 946
 947                                                 if (!(cm->flags & METHOD_ATTRIBUTE_VIRTUAL))
 948                                                         continue;
 949
 950                                                 if (((fqname && !strcmp (cm->name, fqname)) || !strcmp (cm->name, qname)) &&
 951                                                     mono_metadata_signature_equal (cm->signature, im->signature)) {
 952                                                         g_assert (io + l <= max_vtsize);
 953                                                         vtable [io + l] = cm;
 954                                                         break;
 955                                                 }
 956                                         }
 957                                 }
 958                                 g_free (qname);
 959                                 g_free (fqname);
 960                         }
 961
 962
 963                         if (!(class->flags & TYPE_ATTRIBUTE_ABSTRACT)) {
 964                                 for (l = 0; l < ic->method.count; l++) {
 965                                         char *msig;
 966                                         MonoMethod *im = ic->methods [l];
 967                                         if (im->flags & METHOD_ATTRIBUTE_STATIC)
 968                                                         continue;
 969                                         g_assert (io + l <= max_vtsize);
 970
 971                                         /*
 972                                          * If one of our parents already implements this interface
 973                                          * we can inherit the implementation.
 974                                          */
 975                                         if (!(vtable [io + l])) {
 976                                                 MonoClass *parent = class->parent;
 977
 978                                                 if ((ic->interface_id <= parent->max_interface_id) &&
 979                                                         (parent->interface_offsets [ic->interface_id]) &&
 980                                                         parent->vtable)
 981                                                         vtable [io + l] = parent->vtable [parent->interface_offsets [ic->interface_id] + l];
 982                                         }
 983
 984                                         if (!(vtable [io + l])) {
 985                                                 for (j = 0; j < onum; ++j) {
 986                                                         g_print (" at slot %d: %s (%d) overrides %s (%d)\n", io+l, overrides [j*2+1]->name,
 987                                                                  overrides [j*2+1]->slot, overrides [j*2]->name, overrides [j*2]->slot);
 988                                                 }
 989                                                 msig = mono_signature_get_desc (im->signature, FALSE);
 990                                                 printf ("no implementation for interface method %s.%s::%s(%s) in class %s.%s\n",
 991                                                         ic->name_space, ic->name, im->name, msig, class->name_space, class->name);
 992                                                 g_free (msig);
 993                                                 for (j = 0; j < class->method.count; ++j) {
 994                                                         MonoMethod *cm = class->methods [j];
 995                                                         msig = mono_signature_get_desc (cm->signature, FALSE);
 996
 997                                                         printf ("METHOD %s(%s)\n", cm->name, msig);
 998                                                         g_free (msig);
 999                                                 }
1000                                                 g_assert_not_reached ();
1001                                         }
1002                                 }
1003                         }
1004
1005                         for (l = 0; l < ic->method.count; l++) {
1006                                 MonoMethod *im = vtable [io + l];
1007
1008                                 if (im) {
1009                                         g_assert (io + l <= max_vtsize);
1010                                         if (im->slot < 0) {
1011                                                 /* FIXME: why do we need this ? */
1012                                                 im->slot = io + l;
1013                                                 /* g_assert_not_reached (); */
1014                                         }
1015                                 }
1016                         }
1017                 }
1018                 if (ifaces)
1019                         g_ptr_array_free (ifaces, TRUE);
1020         }
1021
1022         for (i = 0; i < class->method.count; ++i) {
1023                 MonoMethod *cm;
1024
1025                 cm = class->methods [i];
1026
1027                 if (!(cm->flags & METHOD_ATTRIBUTE_NEW_SLOT) && (cm->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
1028                         int slot = -1;
1029                         for (k = class->parent; k ; k = k->parent) {
1030                                 int j;
1031                                 for (j = 0; j < k->method.count; ++j) {
1032                                         MonoMethod *m1 = k->methods [j];
1033                                         if (!(m1->flags & METHOD_ATTRIBUTE_VIRTUAL))
1034                                                 continue;
1035                                         if (!strcmp(cm->name, m1->name) &&
1036                                             mono_metadata_signature_equal (cm->signature, m1->signature)) {
1037                                                 slot = k->methods [j]->slot;
1038                                                 g_assert (cm->slot < max_vtsize);
1039                                                 if (!override_map)
1040                                                         override_map = mono_g_hash_table_new (NULL, NULL);
1041                                                 mono_g_hash_table_insert (override_map, m1, cm);
1042                                                 break;
1043                                         }
1044                                 }
1045                                 if (slot >= 0)
1046                                         break;
1047                         }
1048                         if (slot >= 0)
1049                                 cm->slot = slot;
1050                 }
1051
1052                 if (cm->slot < 0)
1053                         cm->slot = cur_slot++;
1054
1055                 if (!(cm->flags & METHOD_ATTRIBUTE_ABSTRACT) && !cm->signature->generic_param_count)
1056                         vtable [cm->slot] = cm;
1057         }
1058
1059         /* override non interface methods */
1060         for (i = 0; i < onum; i++) {
1061                 MonoMethod *decl = overrides [i*2];
1062                 if (!(decl->klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
1063                         g_assert (decl->slot != -1);
1064                         vtable [decl->slot] = overrides [i*2 + 1];
1065                         overrides [i * 2 + 1]->slot = decl->slot;
1066                         if (!override_map)
1067                                 override_map = mono_g_hash_table_new (NULL, NULL);
1068                         mono_g_hash_table_insert (override_map, decl, overrides [i * 2 + 1]);
1069                 }
1070         }
1071
1072         /*
1073          * If a method occupies more than one place in the vtable, and it is
1074          * overriden, then change the other occurances too.
1075          */
1076         if (override_map) {
1077                 for (i = 0; i < max_vtsize; ++i)
1078                         if (vtable [i]) {
1079                                 MonoMethod *cm = mono_g_hash_table_lookup (override_map, vtable [i]);
1080                                 if (cm)
1081                                         vtable [i] = cm;
1082                         }
1083
1084                 mono_g_hash_table_destroy (override_map);
1085         }
1086
1087         class->vtable_size = cur_slot;
1088         class->vtable = g_malloc0 (sizeof (gpointer) * class->vtable_size);
1089         memcpy (class->vtable, vtable,  sizeof (gpointer) * class->vtable_size);
1090
1091         if (mono_print_vtable) {
1092                 int icount = 0;
1093
1094                 for (i = 0; i <= max_iid; i++)
1095                         if (class->interface_offsets [i] != -1)
1096                                 icount++;
1097
1098                 printf ("VTable %s.%s (size = %d, interfaces = %d)\n", class->name_space,
1099                         class->name, class->vtable_size, icount);
1100
1101                 for (i = 0; i < class->vtable_size; ++i) {
1102                         MonoMethod *cm;
1103
1104                         cm = vtable [i];
1105                         if (cm) {
1106                                 printf ("  slot %03d(%03d) %s.%s:%s\n", i, cm->slot,
1107                                         cm->klass->name_space, cm->klass->name,
1108                                         cm->name);
1109                         }
1110                 }
1111
1112
1113                 if (icount) {
1114                         printf ("Interfaces %s.%s (max_iid = %d)\n", class->name_space,
1115                                 class->name, max_iid);
1116
1117                         for (i = 0; i < class->interface_count; i++) {
1118                                 ic = class->interfaces [i];
1119                                 printf ("  slot %03d(%03d) %s.%s\n",
1120                                         class->interface_offsets [ic->interface_id],
1121                                         ic->method.count, ic->name_space, ic->name);
1122                         }
1123
1124                         for (k = class->parent; k ; k = k->parent) {
1125                                 for (i = 0; i < k->interface_count; i++) {
1126                                         ic = k->interfaces [i];
1127                                         printf ("  slot %03d(%03d) %s.%s\n",
1128                                                 class->interface_offsets [ic->interface_id],
1129                                                 ic->method.count, ic->name_space, ic->name);
1130                                 }
1131                         }
1132                 }
1133         }
1134 }
1135
1136 /**
1137  * mono_class_init:
1138  * @class: the class to initialize
1139  *
1140  * compute the instance_size, class_size and other infos that cannot be
1141  * computed at mono_class_get() time. Also compute a generic vtable and
1142  * the method slot numbers. We use this infos later to create a domain
1143  * specific vtable.
1144  */
1145 void
1146 mono_class_init (MonoClass *class)
1147 {
1148         int i;
1149         static MonoMethod *default_ghc = NULL;
1150         static MonoMethod *default_finalize = NULL;
1151         static int finalize_slot = -1;
1152         static int ghc_slot = -1;
1153         MonoMethod **overrides;
1154         int onum = 0;
1155
1156         g_assert (class);
1157
1158         if (class->inited)
1159                 return;
1160
1161         /*g_print ("Init class %s\n", class->name);*/
1162
1163         /* We do everything inside the lock to prevent races */
1164         mono_loader_lock ();
1165
1166         if (class->inited) {
1167                 mono_loader_unlock ();
1168                 /* Somebody might have gotten in before us */
1169                 return;
1170         }
1171
1172         if (class->init_pending) {
1173                 /* this indicates a cyclic dependency */
1174                 g_error ("pending init %s.%s\n", class->name_space, class->name);
1175         }
1176
1177         class->init_pending = 1;
1178
1179         mono_stats.initialized_class_count++;
1180
1181         if (class->parent && !class->parent->inited)
1182                 mono_class_init (class->parent);
1183
1184         /*
1185          * Computes the size used by the fields, and their locations
1186          */
1187         if (!class->size_inited)
1188                 class_compute_field_layout (class);
1189
1190         /* initialize method pointers */
1191         if (class->rank) {
1192                 MonoMethod *ctor;
1193                 MonoMethodSignature *sig;
1194                 class->method.count = class->rank > 1? 2: 1;
1195                 sig = mono_metadata_signature_alloc (class->image, class->rank);
1196                 sig->ret = &mono_defaults.void_class->byval_arg;
1197                 sig->pinvoke = TRUE;
1198                 for (i = 0; i < class->rank; ++i)
1199                         sig->params [i] = &mono_defaults.int32_class->byval_arg;
1200
1201                 ctor = (MonoMethod *) g_new0 (MonoMethodPInvoke, 1);
1202                 ctor->klass = class;
1203                 ctor->flags = METHOD_ATTRIBUTE_PUBLIC | METHOD_ATTRIBUTE_RT_SPECIAL_NAME | METHOD_ATTRIBUTE_SPECIAL_NAME;
1204                 ctor->iflags = METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL;
1205                 ctor->signature = sig;
1206                 ctor->name = ".ctor";
1207                 ctor->slot = -1;
1208                 class->methods = g_new (MonoMethod*, class->method.count);
1209                 class->methods [0] = ctor;
1210                 if (class->rank > 1) {
1211                         sig = mono_metadata_signature_alloc (class->image, class->rank * 2);
1212                         sig->ret = &mono_defaults.void_class->byval_arg;
1213                         sig->pinvoke = TRUE;
1214                         for (i = 0; i < class->rank * 2; ++i)
1215                                 sig->params [i] = &mono_defaults.int32_class->byval_arg;
1216
1217                         ctor = (MonoMethod *) g_new0 (MonoMethodPInvoke, 1);
1218                         ctor->klass = class;
1219                         ctor->flags = METHOD_ATTRIBUTE_PUBLIC | METHOD_ATTRIBUTE_RT_SPECIAL_NAME | METHOD_ATTRIBUTE_SPECIAL_NAME;
1220                         ctor->iflags = METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL;
1221                         ctor->signature = sig;
1222                         ctor->name = ".ctor";
1223                         ctor->slot = -1;
1224                         class->methods [1] = ctor;
1225                 }
1226         } else {
1227                 if (!class->generic_inst && !class->methods) {
1228                         class->methods = g_new (MonoMethod*, class->method.count);
1229                         for (i = 0; i < class->method.count; ++i) {
1230                                 class->methods [i] = mono_get_method (class->image,
1231                                                                       MONO_TOKEN_METHOD_DEF | (i + class->method.first + 1), class);
1232                         }
1233                 }
1234         }
1235
1236         init_properties (class);
1237         init_events (class);
1238
1239         i = mono_metadata_nesting_typedef (class->image, class->type_token, 1);
1240         while (i) {
1241                 MonoClass* nclass;
1242                 guint32 cols [MONO_NESTED_CLASS_SIZE];
1243                 mono_metadata_decode_row (&class->image->tables [MONO_TABLE_NESTEDCLASS], i - 1, cols, MONO_NESTED_CLASS_SIZE);
1244                 nclass = mono_class_create_from_typedef (class->image, MONO_TOKEN_TYPE_DEF | cols [MONO_NESTED_CLASS_NESTED]);
1245                 class->nested_classes = g_list_prepend (class->nested_classes, nclass);
1246
1247                 i = mono_metadata_nesting_typedef (class->image, class->type_token, i + 1);
1248         }
1249
1250         mono_class_setup_supertypes (class);
1251
1252         if (class->flags & TYPE_ATTRIBUTE_INTERFACE) {
1253                 for (i = 0; i < class->method.count; ++i)
1254                         class->methods [i]->slot = i;
1255                 class->init_pending = 0;
1256                 class->inited = 1;
1257                 /*
1258                  * class->interface_offsets is needed for the castclass/isinst code, so
1259                  * we have to setup them for interfaces, too.
1260                  */
1261                 setup_interface_offsets (class, 0);
1262                 mono_loader_unlock ();
1263                 return;
1264         }
1265
1266         overrides = mono_class_get_overrides (class->image, class->type_token, &onum);
1267         mono_class_setup_vtable (class, overrides, onum);
1268         g_free (overrides);
1269
1270         class->inited = 1;
1271         class->init_pending = 0;
1272
1273         if (!default_ghc) {
1274                 if (class == mono_defaults.object_class) {
1275
1276                         for (i = 0; i < class->vtable_size; ++i) {
1277                                 MonoMethod *cm = class->vtable [i];
1278
1279                                 if (!strcmp (cm->name, "GetHashCode")) {
1280                                         ghc_slot = i;
1281                                         break;
1282                                 }
1283                         }
1284
1285                         g_assert (ghc_slot > 0);
1286
1287                         default_ghc = class->vtable [ghc_slot];
1288                 }
1289         }
1290
1291         class->ghcimpl = 1;
1292         if (class->parent) {
1293
1294                 if (class->vtable [ghc_slot] == default_ghc) {
1295                         class->ghcimpl = 0;
1296                 }
1297         }
1298
1299         if (!default_finalize) {
1300                 if (class == mono_defaults.object_class) {
1301
1302                         for (i = 0; i < class->vtable_size; ++i) {
1303                                 MonoMethod *cm = class->vtable [i];
1304
1305                                 if (!strcmp (cm->name, "Finalize")) {
1306                                         finalize_slot = i;
1307                                         break;
1308                                 }
1309                         }
1310
1311                         g_assert (finalize_slot > 0);
1312
1313                         default_finalize = class->vtable [finalize_slot];
1314                 }
1315         }
1316
1317         /* Object::Finalize should have empty implemenatation */
1318         class->has_finalize = 0;
1319         if (class->parent) {
1320                 if (class->vtable [finalize_slot] != default_finalize)
1321                         class->has_finalize = 1;
1322         }
1323
1324         mono_loader_unlock ();
1325
1326         if (mono_debugger_class_init_func)
1327                 mono_debugger_class_init_func (class);
1328 }
1329
1330
1331 void
1332 mono_class_setup_mono_type (MonoClass *class)
1333 {
1334         const char *name = class->name;
1335         const char *nspace = class->name_space;
1336
1337         if (class->flags & TYPE_ATTRIBUTE_INTERFACE)
1338                 class->interface_id = mono_get_unique_iid (class);
1339
1340         class->this_arg.byref = 1;
1341         class->this_arg.data.klass = class;
1342         class->this_arg.type = MONO_TYPE_CLASS;
1343         class->byval_arg.data.klass = class;
1344         class->byval_arg.type = MONO_TYPE_CLASS;
1345
1346         if (!strcmp (nspace, "System")) {
1347                 if (!strcmp (name, "ValueType")) {
1348                         /*
1349                          * do not set the valuetype bit for System.ValueType.
1350                          * class->valuetype = 1;
1351                          */
1352                 } else if (!strcmp (name, "Enum")) {
1353                         /*
1354                          * do not set the valuetype bit for System.Enum.
1355                          * class->valuetype = 1;
1356                          */
1357                         class->valuetype = 0;
1358                         class->enumtype = 0;
1359                 } else if (!strcmp (name, "Object")) {
1360                         class->this_arg.type = class->byval_arg.type = MONO_TYPE_OBJECT;
1361                 } else if (!strcmp (name, "String")) {
1362                         class->this_arg.type = class->byval_arg.type = MONO_TYPE_STRING;
1363                 } else if (!strcmp (name, "TypedReference")) {
1364                         class->this_arg.type = class->byval_arg.type = MONO_TYPE_TYPEDBYREF;
1365                 }
1366         }
1367
1368         if (class->valuetype) {
1369                 int t = MONO_TYPE_VALUETYPE;
1370                 if (!strcmp (nspace, "System")) {
1371                         switch (*name) {
1372                         case 'B':
1373                                 if (!strcmp (name, "Boolean")) {
1374                                         t = MONO_TYPE_BOOLEAN;
1375                                 } else if (!strcmp(name, "Byte")) {
1376                                         t = MONO_TYPE_U1;
1377                                         class->blittable = TRUE;
1378                                 }
1379                                 break;
1380                         case 'C':
1381                                 if (!strcmp (name, "Char")) {
1382                                         t = MONO_TYPE_CHAR;
1383                                 }
1384                                 break;
1385                         case 'D':
1386                                 if (!strcmp (name, "Double")) {
1387                                         t = MONO_TYPE_R8;
1388                                         class->blittable = TRUE;
1389                                 }
1390                                 break;
1391                         case 'I':
1392                                 if (!strcmp (name, "Int32")) {
1393                                         t = MONO_TYPE_I4;
1394                                         class->blittable = TRUE;
1395                                 } else if (!strcmp(name, "Int16")) {
1396                                         t = MONO_TYPE_I2;
1397                                         class->blittable = TRUE;
1398                                 } else if (!strcmp(name, "Int64")) {
1399                                         t = MONO_TYPE_I8;
1400                                         class->blittable = TRUE;
1401                                 } else if (!strcmp(name, "IntPtr")) {
1402                                         t = MONO_TYPE_I;
1403                                         class->blittable = TRUE;
1404                                 }
1405                                 break;
1406                         case 'S':
1407                                 if (!strcmp (name, "Single")) {
1408                                         t = MONO_TYPE_R4;
1409                                         class->blittable = TRUE;
1410                                 } else if (!strcmp(name, "SByte")) {
1411                                         t = MONO_TYPE_I1;
1412                                         class->blittable = TRUE;
1413                                 }
1414                                 break;
1415                         case 'U':
1416                                 if (!strcmp (name, "UInt32")) {
1417                                         t = MONO_TYPE_U4;
1418                                         class->blittable = TRUE;
1419                                 } else if (!strcmp(name, "UInt16")) {
1420                                         t = MONO_TYPE_U2;
1421                                         class->blittable = TRUE;
1422                                 } else if (!strcmp(name, "UInt64")) {
1423                                         t = MONO_TYPE_U8;
1424                                         class->blittable = TRUE;
1425                                 } else if (!strcmp(name, "UIntPtr")) {
1426                                         t = MONO_TYPE_U;
1427                                         class->blittable = TRUE;
1428                                 }
1429                                 break;
1430                         case 'T':
1431                                 if (!strcmp (name, "TypedReference")) {
1432                                         t = MONO_TYPE_TYPEDBYREF;
1433                                         class->blittable = TRUE;
1434                                 }
1435                                 break;
1436                         case 'V':
1437                                 if (!strcmp (name, "Void")) {
1438                                         t = MONO_TYPE_VOID;
1439                                 }
1440                                 break;
1441                         default:
1442                                 break;
1443                         }
1444                 }
1445                 class->this_arg.type = class->byval_arg.type = t;
1446         }
1447 }
1448
1449 void
1450 mono_class_setup_parent (MonoClass *class, MonoClass *parent)
1451 {
1452         gboolean system_namespace;
1453
1454         system_namespace = !strcmp (class->name_space, "System");
1455
1456         /* if root of the hierarchy */
1457         if (system_namespace && !strcmp (class->name, "Object")) {
1458                 class->parent = NULL;
1459                 class->instance_size = sizeof (MonoObject);
1460                 return;
1461         }
1462         if (!strcmp (class->name, "<Module>")) {
1463                 class->parent = NULL;
1464                 class->instance_size = 0;
1465                 return;
1466         }
1467
1468         if (!(class->flags & TYPE_ATTRIBUTE_INTERFACE)) {
1469                 class->parent = parent;
1470
1471                 if (!parent)
1472                         g_assert_not_reached (); /* FIXME */
1473
1474                 if (parent->generic_inst && !parent->name) {
1475                         /*
1476                          * If the parent is a generic instance, we may get
1477                          * called before it is fully initialized, especially
1478                          * before it has its name.
1479                          */
1480                         return;
1481                 }
1482
1483                 class->marshalbyref = parent->marshalbyref;
1484                 class->contextbound  = parent->contextbound;
1485                 class->delegate  = parent->delegate;
1486
1487                 if (system_namespace) {
1488                         if (*class->name == 'M' && !strcmp (class->name, "MarshalByRefObject"))
1489                                 class->marshalbyref = 1;
1490
1491                         if (*class->name == 'C' && !strcmp (class->name, "ContextBoundObject"))
1492                                 class->contextbound  = 1;
1493
1494                         if (*class->name == 'D' && !strcmp (class->name, "Delegate"))
1495                                 class->delegate  = 1;
1496                 }
1497
1498                 if (class->parent->enumtype || ((strcmp (class->parent->name, "ValueType") == 0) &&
1499                                                 (strcmp (class->parent->name_space, "System") == 0)))
1500                         class->valuetype = 1;
1501                 if (((strcmp (class->parent->name, "Enum") == 0) && (strcmp (class->parent->name_space, "System") == 0))) {
1502                         class->valuetype = class->enumtype = 1;
1503                 }
1504                 /*class->enumtype = class->parent->enumtype; */
1505                 mono_class_setup_supertypes (class);
1506         } else {
1507                 class->parent = NULL;
1508         }
1509
1510 }
1511
1512 void
1513 mono_class_setup_supertypes (MonoClass *class)
1514 {
1515         MonoClass *k;
1516         int ms, i;
1517
1518         if (class->supertypes)
1519                 return;
1520
1521         class->idepth = 0;
1522         for (k = class; k ; k = k->parent) {
1523                 class->idepth++;
1524         }
1525
1526         ms = MAX (MONO_DEFAULT_SUPERTABLE_SIZE, class->idepth);
1527         class->supertypes = g_new0 (MonoClass *, ms);
1528
1529         if (class->parent) {
1530                 for (i = class->idepth, k = class; k ; k = k->parent)
1531                         class->supertypes [--i] = k;
1532         } else {
1533                 class->supertypes [0] = class;
1534         }
1535 }
1536
1537 /**
1538  * @image: context where the image is created
1539  * @type_token:  typedef token
1540  */
1541 static MonoClass *
1542 mono_class_create_from_typedef (MonoImage *image, guint32 type_token)
1543 {
1544         MonoTableInfo *tt = &image->tables [MONO_TABLE_TYPEDEF];
1545         MonoClass *class, *parent = NULL;
1546         guint32 cols [MONO_TYPEDEF_SIZE];
1547         guint32 cols_next [MONO_TYPEDEF_SIZE];
1548         guint tidx = mono_metadata_token_index (type_token);
1549         const char *name, *nspace;
1550         guint icount = 0;
1551         MonoClass **interfaces;
1552
1553         mono_loader_lock ();
1554
1555         if ((class = g_hash_table_lookup (image->class_cache, GUINT_TO_POINTER (type_token)))) {
1556                 mono_loader_unlock ();
1557                 return class;
1558         }
1559
1560         g_assert (mono_metadata_token_table (type_token) == MONO_TABLE_TYPEDEF);
1561
1562         mono_metadata_decode_row (tt, tidx - 1, cols, MONO_TYPEDEF_SIZE);
1563
1564         name = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
1565         nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
1566
1567         if (cols [MONO_TYPEDEF_EXTENDS])
1568                 parent = mono_class_get (image, mono_metadata_token_from_dor (cols [MONO_TYPEDEF_EXTENDS]));
1569         interfaces = mono_metadata_interfaces_from_typedef (image, type_token, &icount);
1570
1571         class = g_malloc0 (sizeof (MonoClass));
1572
1573         g_hash_table_insert (image->class_cache, GUINT_TO_POINTER (type_token), class);
1574
1575         class->interfaces = interfaces;
1576         class->interface_count = icount;
1577
1578         class->name = name;
1579         class->name_space = nspace;
1580
1581         class->image = image;
1582         class->type_token = type_token;
1583         class->flags = cols [MONO_TYPEDEF_FLAGS];
1584
1585         if ((class->flags & TYPE_ATTRIBUTE_STRING_FORMAT_MASK) == TYPE_ATTRIBUTE_UNICODE_CLASS)
1586                 class->unicode = 1;
1587         /* fixme: maybe we must set this on windows
1588         if ((class->flags & TYPE_ATTRIBUTE_STRING_FORMAT_MASK) == TYPE_ATTRIBUTE_AUTO_CLASS)
1589                 class->unicode = 1;
1590         */
1591
1592         class->cast_class = class->element_class = class;
1593
1594         /*g_print ("Load class %s\n", name);*/
1595
1596         mono_class_setup_parent (class, parent);
1597
1598         mono_class_setup_mono_type (class);
1599
1600         /*
1601          * Compute the field and method lists
1602          */
1603         class->field.first  = cols [MONO_TYPEDEF_FIELD_LIST] - 1;
1604         class->method.first = cols [MONO_TYPEDEF_METHOD_LIST] - 1;
1605
1606         if (tt->rows > tidx){
1607                 mono_metadata_decode_row (tt, tidx, cols_next, MONO_TYPEDEF_SIZE);
1608                 class->field.last  = cols_next [MONO_TYPEDEF_FIELD_LIST] - 1;
1609                 class->method.last = cols_next [MONO_TYPEDEF_METHOD_LIST] - 1;
1610         } else {
1611                 class->field.last  = image->tables [MONO_TABLE_FIELD].rows;
1612                 class->method.last = image->tables [MONO_TABLE_METHOD].rows;
1613         }
1614
1615         if (cols [MONO_TYPEDEF_FIELD_LIST] &&
1616             cols [MONO_TYPEDEF_FIELD_LIST] <= image->tables [MONO_TABLE_FIELD].rows)
1617                 class->field.count = class->field.last - class->field.first;
1618         else
1619                 class->field.count = 0;
1620
1621         if (cols [MONO_TYPEDEF_METHOD_LIST] <= image->tables [MONO_TABLE_METHOD].rows)
1622                 class->method.count = class->method.last - class->method.first;
1623         else
1624                 class->method.count = 0;
1625
1626         /* reserve space to store vector pointer in arrays */
1627         if (!strcmp (nspace, "System") && !strcmp (name, "Array")) {
1628                 class->instance_size += 2 * sizeof (gpointer);
1629                 g_assert (class->field.count == 0);
1630         }
1631
1632         if (class->enumtype)
1633                 class_compute_field_layout (class);
1634
1635         if ((type_token = mono_metadata_nested_in_typedef (image, type_token)))
1636                 class->nested_in = mono_class_create_from_typedef (image, type_token);
1637
1638         class->gen_params = mono_metadata_load_generic_params (image, class->type_token, &icount);
1639         class->num_gen_params = icount;
1640
1641         mono_loader_unlock ();
1642
1643         return class;
1644 }
1645
1646 static char*
1647 get_instantiation_name (const char *name, MonoGenericInst *ginst)
1648 {
1649         GString *res = g_string_new (name);
1650         const char *p;
1651         int i;
1652         MonoClass *argclass;
1653
1654         p = strchr (name, '<');
1655         if (p) {
1656                 g_string_truncate (res, (p - name) + 1);
1657         } else {
1658                 g_string_append_c (res, '<');
1659         }
1660         for (i = 0; i < ginst->type_argc; ++i) {
1661                 if (i > 0)
1662                         g_string_append_c (res, ',');
1663                 argclass = mono_class_from_mono_type (ginst->type_argv [i]);
1664                 g_string_append (res, argclass->name);
1665         }
1666         g_string_append_c (res, '>');
1667         return g_string_free (res, FALSE);
1668 }
1669
1670 static void
1671 mono_class_initialize_generic (MonoGenericInst *ginst, gboolean inflate_methods)
1672 {
1673         MonoClass *klass, *gklass;
1674
1675         if (ginst->initialized || ginst->init_pending)
1676                 return;
1677
1678         gklass = mono_class_from_mono_type (ginst->generic_type);
1679         mono_class_init (gklass);
1680
1681         klass = ginst->klass;
1682         klass->name = get_instantiation_name (gklass->name, ginst);
1683
1684         mono_class_setup_parent (klass, gklass->parent);
1685         mono_class_setup_mono_type (klass);
1686
1687         if (inflate_methods) {
1688                 int i;
1689
1690                 klass->field = gklass->field;
1691                 klass->method = gklass->method;
1692                 klass->methods = g_new0 (MonoMethod *, klass->method.count);
1693                 for (i = 0; i < klass->method.count; i++)
1694                         klass->methods [i] = mono_class_inflate_generic_method (gklass->methods [i], ginst);
1695         }
1696
1697         g_hash_table_insert (klass->image->generics_cache, ginst->generic_type, klass);
1698         ginst->initialized = TRUE;
1699 }
1700
1701 MonoClass*
1702 mono_class_from_generic (MonoType *gtype, gboolean inflate_methods)
1703 {
1704         MonoGenericInst *ginst = gtype->data.generic_inst;
1705         MonoClass *class, *gklass;
1706         MonoImage *image;
1707
1708         if (ginst->klass) {
1709                 mono_class_initialize_generic (ginst, TRUE);
1710                 return ginst->klass;
1711         }
1712
1713         mono_loader_lock ();
1714
1715         gklass = mono_class_from_mono_type (ginst->generic_type);
1716         mono_class_init (gklass);
1717
1718         image = gklass->image;
1719         if ((class = g_hash_table_lookup (image->generics_cache, gtype))) {
1720                 mono_loader_unlock ();
1721                 return class;
1722         }
1723
1724         class = g_malloc0 (sizeof (MonoClass));
1725         class->name_space = gklass->name_space;
1726         class->name = get_instantiation_name (gklass->name, ginst);
1727         class->image = image;
1728         class->flags = gklass->flags;
1729
1730         class->generic_inst = gtype;
1731
1732         class->cast_class = class->element_class = class;
1733
1734         if (inflate_methods) {
1735                 MonoClass *pklass = NULL;
1736                 int i;
1737
1738                 if (ginst->parent)
1739                         pklass = mono_class_from_mono_type (ginst->parent);
1740                 else
1741                         pklass = gklass->parent;
1742
1743                 mono_class_setup_parent (class, pklass);
1744                 mono_class_setup_mono_type (class);
1745
1746                 class->field = gklass->field;
1747                 class->method = gklass->method;
1748                 class->methods = g_new0 (MonoMethod *, class->method.count);
1749                 for (i = 0; i < class->method.count; i++)
1750                         class->methods [i] = mono_class_inflate_generic_method (gklass->methods [i], ginst);
1751         }
1752
1753         g_hash_table_insert (image->generics_cache, gtype, class);
1754
1755         mono_loader_unlock ();
1756
1757         return class;
1758 }
1759
1760 MonoClass *
1761 mono_class_from_generic_parameter (MonoGenericParam *param, MonoImage *image, gboolean is_mvar)
1762 {
1763         MonoClass *klass, **ptr;
1764         int count, pos, i;
1765
1766         if (param->pklass)
1767                 return param->pklass;
1768
1769         klass = param->pklass = g_new0 (MonoClass, 1);
1770
1771         for (count = 0, ptr = param->constraints; ptr && *ptr; ptr++, count++)
1772                 ;
1773
1774         pos = 0;
1775         if ((count > 0) && !(param->constraints [0]->flags & TYPE_ATTRIBUTE_INTERFACE)) {
1776                 klass->parent = param->constraints [0];
1777                 pos++;
1778         } else
1779                 klass->parent = mono_defaults.object_class;
1780
1781         if (count - pos > 0) {
1782                 klass->interface_count = count - pos;
1783                 klass->interfaces = g_new0 (MonoClass *, count - pos);
1784                 for (i = pos; i < count; i++)
1785                         klass->interfaces [i - pos] = param->constraints [i];
1786         }
1787
1788         klass->name = g_strdup_printf (is_mvar ? "!!%d" : "!%d", param->num);
1789         klass->name_space = "";
1790         klass->image = image;
1791         klass->cast_class = klass->element_class = klass;
1792         klass->enum_basetype = &klass->element_class->byval_arg;
1793         klass->flags = TYPE_ATTRIBUTE_INTERFACE | TYPE_ATTRIBUTE_PUBLIC;
1794
1795         klass->this_arg.type = klass->byval_arg.type = is_mvar ? MONO_TYPE_MVAR : MONO_TYPE_VAR;
1796         klass->this_arg.data.generic_param = klass->byval_arg.data.generic_param = param;
1797         klass->this_arg.byref = TRUE;
1798
1799         mono_class_init (klass);
1800
1801         return klass;
1802 }
1803
1804 static MonoClass *
1805 my_mono_class_from_generic_parameter (MonoGenericParam *param, gboolean is_mvar)
1806 {
1807         MonoClass *klass;
1808
1809         if (param->pklass)
1810                 return param->pklass;
1811
1812         klass = g_new0 (MonoClass, 1);
1813
1814         klass->name = g_strdup_printf (is_mvar ? "!!%d" : "!%d", param->num);
1815         klass->name_space = "";
1816         klass->image = mono_defaults.corlib;
1817         klass->cast_class = klass->element_class = klass;
1818         klass->enum_basetype = &klass->element_class->byval_arg;
1819         klass->flags = TYPE_ATTRIBUTE_INTERFACE | TYPE_ATTRIBUTE_PUBLIC;
1820
1821         klass->this_arg.type = klass->byval_arg.type = is_mvar ? MONO_TYPE_MVAR : MONO_TYPE_VAR;
1822         klass->this_arg.data.generic_param = klass->byval_arg.data.generic_param = param;
1823         klass->this_arg.byref = TRUE;
1824
1825         mono_class_init (klass);
1826
1827         return klass;
1828 }
1829
1830 MonoClass *
1831 mono_ptr_class_get (MonoType *type)
1832 {
1833         MonoClass *result;
1834         MonoClass *el_class;
1835         static GHashTable *ptr_hash = NULL;
1836
1837         mono_loader_lock ();
1838
1839         if (!ptr_hash)
1840                 ptr_hash = g_hash_table_new (NULL, NULL);
1841         el_class = mono_class_from_mono_type (type);
1842         if ((result = g_hash_table_lookup (ptr_hash, el_class))) {
1843                 mono_loader_unlock ();
1844                 return result;
1845         }
1846         result = g_new0 (MonoClass, 1);
1847
1848         result->parent = NULL; /* no parent for PTR types */
1849         result->name = "System";
1850         result->name_space = "MonoPtrFakeClass";
1851         result->image = el_class->image;
1852         result->inited = TRUE;
1853         result->flags = TYPE_ATTRIBUTE_CLASS | (el_class->flags & TYPE_ATTRIBUTE_VISIBILITY_MASK);
1854         /* Can pointers get boxed? */
1855         result->instance_size = sizeof (gpointer);
1856         result->cast_class = result->element_class = el_class;
1857         result->enum_basetype = &result->element_class->byval_arg;
1858
1859         result->this_arg.type = result->byval_arg.type = MONO_TYPE_PTR;
1860         result->this_arg.data.type = result->byval_arg.data.type = result->enum_basetype;
1861         result->this_arg.byref = TRUE;
1862
1863         mono_class_setup_supertypes (result);
1864
1865         g_hash_table_insert (ptr_hash, el_class, result);
1866
1867         mono_loader_unlock ();
1868
1869         return result;
1870 }
1871
1872 static MonoClass *
1873 mono_fnptr_class_get (MonoMethodSignature *sig)
1874 {
1875         MonoClass *result;
1876         static GHashTable *ptr_hash = NULL;
1877
1878         mono_loader_lock ();
1879
1880         if (!ptr_hash)
1881                 ptr_hash = g_hash_table_new (NULL, NULL);
1882
1883         if ((result = g_hash_table_lookup (ptr_hash, sig))) {
1884                 mono_loader_unlock ();
1885                 return result;
1886         }
1887         result = g_new0 (MonoClass, 1);
1888
1889         result->parent = NULL; /* no parent for PTR types */
1890         result->name = "System";
1891         result->name_space = "MonoFNPtrFakeClass";
1892         result->image = NULL; /* need to fix... */
1893         result->inited = TRUE;
1894         result->flags = TYPE_ATTRIBUTE_CLASS; // | (el_class->flags & TYPE_ATTRIBUTE_VISIBILITY_MASK);
1895         /* Can pointers get boxed? */
1896         result->instance_size = sizeof (gpointer);
1897         result->cast_class = result->element_class = result;
1898
1899         result->this_arg.type = result->byval_arg.type = MONO_TYPE_FNPTR;
1900         result->this_arg.data.method = result->byval_arg.data.method = sig;
1901         result->this_arg.byref = TRUE;
1902         result->enum_basetype = &result->element_class->byval_arg;
1903
1904         mono_class_setup_supertypes (result);
1905
1906         g_hash_table_insert (ptr_hash, sig, result);
1907
1908         mono_loader_unlock ();
1909
1910         return result;
1911 }
1912
1913 MonoClass *
1914 mono_class_from_mono_type (MonoType *type)
1915 {
1916         switch (type->type) {
1917         case MONO_TYPE_OBJECT:
1918                 return type->data.klass? type->data.klass: mono_defaults.object_class;
1919         case MONO_TYPE_VOID:
1920                 return type->data.klass? type->data.klass: mono_defaults.void_class;
1921         case MONO_TYPE_BOOLEAN:
1922                 return type->data.klass? type->data.klass: mono_defaults.boolean_class;
1923         case MONO_TYPE_CHAR:
1924                 return type->data.klass? type->data.klass: mono_defaults.char_class;
1925         case MONO_TYPE_I1:
1926                 return type->data.klass? type->data.klass: mono_defaults.sbyte_class;
1927         case MONO_TYPE_U1:
1928                 return type->data.klass? type->data.klass: mono_defaults.byte_class;
1929         case MONO_TYPE_I2:
1930                 return type->data.klass? type->data.klass: mono_defaults.int16_class;
1931         case MONO_TYPE_U2:
1932                 return type->data.klass? type->data.klass: mono_defaults.uint16_class;
1933         case MONO_TYPE_I4:
1934                 return type->data.klass? type->data.klass: mono_defaults.int32_class;
1935         case MONO_TYPE_U4:
1936                 return type->data.klass? type->data.klass: mono_defaults.uint32_class;
1937         case MONO_TYPE_I:
1938                 return type->data.klass? type->data.klass: mono_defaults.int_class;
1939         case MONO_TYPE_U:
1940                 return type->data.klass? type->data.klass: mono_defaults.uint_class;
1941         case MONO_TYPE_I8:
1942                 return type->data.klass? type->data.klass: mono_defaults.int64_class;
1943         case MONO_TYPE_U8:
1944                 return type->data.klass? type->data.klass: mono_defaults.uint64_class;
1945         case MONO_TYPE_R4:
1946                 return type->data.klass? type->data.klass: mono_defaults.single_class;
1947         case MONO_TYPE_R8:
1948                 return type->data.klass? type->data.klass: mono_defaults.double_class;
1949         case MONO_TYPE_STRING:
1950                 return type->data.klass? type->data.klass: mono_defaults.string_class;
1951         case MONO_TYPE_TYPEDBYREF:
1952                 return type->data.klass? type->data.klass: mono_defaults.typed_reference_class;
1953         case MONO_TYPE_ARRAY:
1954                 return mono_bounded_array_class_get (type->data.array->eklass, type->data.array->rank, TRUE);
1955         case MONO_TYPE_PTR:
1956                 return mono_ptr_class_get (type->data.type);
1957         case MONO_TYPE_FNPTR:
1958                 return mono_fnptr_class_get (type->data.method);
1959         case MONO_TYPE_SZARRAY:
1960                 return mono_array_class_get (type->data.klass, 1);
1961         case MONO_TYPE_CLASS:
1962         case MONO_TYPE_VALUETYPE:
1963                 return type->data.klass;
1964         case MONO_TYPE_GENERICINST:
1965                 return mono_class_from_generic (type, TRUE);
1966         case MONO_TYPE_VAR:
1967                 return my_mono_class_from_generic_parameter (type->data.generic_param, FALSE);
1968         case MONO_TYPE_MVAR:
1969                 return my_mono_class_from_generic_parameter (type->data.generic_param, TRUE);
1970         default:
1971                 g_warning ("implement me 0x%02x\n", type->type);
1972                 g_assert_not_reached ();
1973         }
1974
1975         return NULL;
1976 }
1977
1978 /**
1979  * @image: context where the image is created
1980  * @type_spec:  typespec token
1981  */
1982 static MonoClass *
1983 mono_class_create_from_typespec (MonoImage *image, guint32 type_spec)
1984 {
1985         MonoType *type;
1986         MonoClass *class;
1987
1988         type = mono_type_create_from_typespec (image, type_spec);
1989
1990         switch (type->type) {
1991         case MONO_TYPE_ARRAY:
1992                 class = mono_array_class_get (type->data.array->eklass, type->data.array->rank);
1993                 break;
1994         case MONO_TYPE_SZARRAY:
1995                 class = mono_array_class_get (type->data.klass, 1);
1996                 break;
1997         case MONO_TYPE_PTR:
1998                 class = mono_class_from_mono_type (type->data.type);
1999                 break;
2000         case MONO_TYPE_GENERICINST:
2001                 class = mono_class_from_generic (type, TRUE);
2002                 break;
2003         default:
2004                 /* it seems any type can be stored in TypeSpec as well */
2005                 class = mono_class_from_mono_type (type);
2006                 break;
2007         }
2008
2009         return class;
2010 }
2011
2012 /**
2013  * mono_bounded_array_class_get:
2014  * @element_class: element class
2015  * @rank: the dimension of the array class
2016  * @bounded: whenever the array has non-zero bounds
2017  *
2018  * Returns: a class object describing the array with element type @element_type and
2019  * dimension @rank.
2020  */
2021 MonoClass *
2022 mono_bounded_array_class_get (MonoClass *eclass, guint32 rank, gboolean bounded)
2023 {
2024         MonoImage *image;
2025         MonoClass *class;
2026         MonoClass *parent = NULL;
2027         GSList *list, *rootlist;
2028         int nsize;
2029         char *name;
2030         gboolean corlib_type = FALSE;
2031
2032         g_assert (rank <= 255);
2033
2034         if (rank > 1)
2035                 /* bounded only matters for one-dimensional arrays */
2036                 bounded = FALSE;
2037
2038         image = eclass->image;
2039
2040         mono_loader_lock ();
2041
2042         if ((rootlist = list = g_hash_table_lookup (image->array_cache, eclass))) {
2043                 for (; list; list = list->next) {
2044                         class = list->data;
2045                         if ((class->rank == rank) && (class->byval_arg.type == (bounded ? MONO_TYPE_ARRAY : MONO_TYPE_SZARRAY))) {
2046                                 mono_loader_unlock ();
2047                                 return class;
2048                         }
2049                 }
2050         }
2051
2052         /* for the building corlib use System.Array from it */
2053         if (image->assembly && image->assembly->dynamic && strcmp (image->assembly_name, "mscorlib") == 0) {
2054                 parent = mono_class_from_name (image, "System", "Array");
2055                 corlib_type = TRUE;
2056         } else {
2057                 parent = mono_defaults.array_class;
2058                 if (!parent->inited)
2059                         mono_class_init (parent);
2060         }
2061
2062         class = g_malloc0 (sizeof (MonoClass));
2063
2064         class->image = image;
2065         class->name_space = eclass->name_space;
2066         nsize = strlen (eclass->name);
2067         name = g_malloc (nsize + 2 + rank);
2068         memcpy (name, eclass->name, nsize);
2069         name [nsize] = '[';
2070         if (rank > 1)
2071                 memset (name + nsize + 1, ',', rank - 1);
2072         name [nsize + rank] = ']';
2073         name [nsize + rank + 1] = 0;
2074         class->name = name;
2075         class->type_token = 0;
2076         /* all arrays are marked serializable and sealed, bug #42779 */
2077         class->flags = TYPE_ATTRIBUTE_CLASS | TYPE_ATTRIBUTE_SERIALIZABLE | TYPE_ATTRIBUTE_SEALED |
2078                 (eclass->flags & TYPE_ATTRIBUTE_VISIBILITY_MASK);
2079         class->parent = parent;
2080         class->instance_size = mono_class_instance_size (class->parent);
2081         class->class_size = 0;
2082         mono_class_setup_supertypes (class);
2083
2084         class->rank = rank;
2085
2086         if (eclass->enumtype)
2087                 class->cast_class = eclass->element_class;
2088         else
2089                 class->cast_class = eclass;
2090
2091         class->element_class = eclass;
2092
2093         if ((rank > 1) || bounded) {
2094                 MonoArrayType *at = g_new0 (MonoArrayType, 1);
2095                 class->byval_arg.type = MONO_TYPE_ARRAY;
2096                 class->byval_arg.data.array = at;
2097                 at->eklass = eclass;
2098                 at->rank = rank;
2099                 /* FIXME: complete.... */
2100         } else {
2101                 class->byval_arg.type = MONO_TYPE_SZARRAY;
2102                 class->byval_arg.data.klass = eclass;
2103         }
2104         class->this_arg = class->byval_arg;
2105         class->this_arg.byref = 1;
2106         if (corlib_type) {
2107                 class->inited = 1;
2108         }
2109
2110         list = g_slist_append (rootlist, class);
2111         g_hash_table_insert (image->array_cache, eclass, list);
2112
2113         mono_loader_unlock ();
2114
2115         return class;
2116 }
2117
2118 /**
2119  * mono_array_class_get:
2120  * @element_class: element class
2121  * @rank: the dimension of the array class
2122  *
2123  * Returns: a class object describing the array with element type @element_type and
2124  * dimension @rank.
2125  */
2126 MonoClass *
2127 mono_array_class_get (MonoClass *eclass, guint32 rank)
2128 {
2129         return mono_bounded_array_class_get (eclass, rank, FALSE);
2130 }
2131
2132 /**
2133  * mono_class_instance_size:
2134  * @klass: a class
2135  *
2136  * Returns: the size of an object instance
2137  */
2138 gint32
2139 mono_class_instance_size (MonoClass *klass)
2140 {
2141         if (!klass->size_inited)
2142                 mono_class_init (klass);
2143
2144         return klass->instance_size;
2145 }
2146
2147 /**
2148  * mono_class_min_align:
2149  * @klass: a class
2150  *
2151  * Returns: minimm alignment requirements
2152  */
2153 gint32
2154 mono_class_min_align (MonoClass *klass)
2155 {
2156         if (!klass->size_inited)
2157                 mono_class_init (klass);
2158
2159         return klass->min_align;
2160 }
2161
2162 /**
2163  * mono_class_value_size:
2164  * @klass: a class
2165  *
2166  * This function is used for value types, and return the
2167  * space and the alignment to store that kind of value object.
2168  *
2169  * Returns: the size of a value of kind @klass
2170  */
2171 gint32
2172 mono_class_value_size      (MonoClass *klass, guint32 *align)
2173 {
2174         gint32 size;
2175
2176         /* fixme: check disable, because we still have external revereces to
2177          * mscorlib and Dummy Objects
2178          */
2179         /*g_assert (klass->valuetype);*/
2180
2181         size = mono_class_instance_size (klass) - sizeof (MonoObject);
2182
2183         if (align)
2184                 *align = klass->min_align;
2185
2186         return size;
2187 }
2188
2189 /**
2190  * mono_class_data_size:
2191  * @klass: a class
2192  *
2193  * Returns: the size of the static class data
2194  */
2195 gint32
2196 mono_class_data_size (MonoClass *klass)
2197 {
2198         if (!klass->inited)
2199                 mono_class_init (klass);
2200
2201         return klass->class_size;
2202 }
2203
2204 /*
2205  * Auxiliary routine to mono_class_get_field
2206  *
2207  * Takes a field index instead of a field token.
2208  */
2209 static MonoClassField *
2210 mono_class_get_field_idx (MonoClass *class, int idx)
2211 {
2212         if (class->field.count){
2213                 if ((idx >= class->field.first) && (idx < class->field.last)){
2214                         return &class->fields [idx - class->field.first];
2215                 }
2216         }
2217
2218         if (!class->parent)
2219                 return NULL;
2220
2221         return mono_class_get_field_idx (class->parent, idx);
2222 }
2223
2224 /**
2225  * mono_class_get_field:
2226  * @class: the class to lookup the field.
2227  * @field_token: the field token
2228  *
2229  * Returns: A MonoClassField representing the type and offset of
2230  * the field, or a NULL value if the field does not belong to this
2231  * class.
2232  */
2233 MonoClassField *
2234 mono_class_get_field (MonoClass *class, guint32 field_token)
2235 {
2236         int idx = mono_metadata_token_index (field_token);
2237
2238         g_assert (mono_metadata_token_code (field_token) == MONO_TOKEN_FIELD_DEF);
2239
2240         return mono_class_get_field_idx (class, idx - 1);
2241 }
2242
2243 MonoClassField *
2244 mono_class_get_field_from_name (MonoClass *klass, const char *name)
2245 {
2246         int i;
2247
2248         while (klass) {
2249                 for (i = 0; i < klass->field.count; ++i) {
2250                         if (strcmp (name, klass->fields [i].name) == 0)
2251                                 return &klass->fields [i];
2252                 }
2253                 klass = klass->parent;
2254         }
2255         return NULL;
2256 }
2257
2258 MonoProperty*
2259 mono_class_get_property_from_name (MonoClass *klass, const char *name)
2260 {
2261         int i;
2262
2263         while (klass) {
2264                 for (i = 0; i < klass->property.count; ++i) {
2265                         if (strcmp (name, klass->properties [i].name) == 0)
2266                                 return &klass->properties [i];
2267                 }
2268                 klass = klass->parent;
2269         }
2270         return NULL;
2271 }
2272
2273 /**
2274  * mono_class_get:
2275  * @image: the image where the class resides
2276  * @type_token: the token for the class
2277  * @at: an optional pointer to return the array element type
2278  *
2279  * Returns: the MonoClass that represents @type_token in @image
2280  */
2281 MonoClass *
2282 mono_class_get (MonoImage *image, guint32 type_token)
2283 {
2284         MonoClass *class = NULL;
2285
2286         if (image->dynamic)
2287                 return mono_lookup_dynamic_token (image, type_token);
2288
2289         switch (type_token & 0xff000000){
2290         case MONO_TOKEN_TYPE_DEF:
2291                 class = mono_class_create_from_typedef (image, type_token);
2292                 break;
2293         case MONO_TOKEN_TYPE_REF:
2294                 class = mono_class_from_typeref (image, type_token);
2295                 break;
2296         case MONO_TOKEN_TYPE_SPEC:
2297                 class = mono_class_create_from_typespec (image, type_token);
2298                 break;
2299         default:
2300                 g_warning ("unknown token type %x", type_token & 0xff000000);
2301                 g_assert_not_reached ();
2302         }
2303
2304         if (!class)
2305                 g_warning ("Could not load class from token 0x%08x in %s", type_token, image->name);
2306
2307         return class;
2308 }
2309
2310 MonoClass *
2311 mono_class_from_name_case (MonoImage *image, const char* name_space, const char *name)
2312 {
2313         MonoTableInfo  *t = &image->tables [MONO_TABLE_TYPEDEF];
2314         guint32 cols [MONO_TYPEDEF_SIZE];
2315         const char *n;
2316         const char *nspace;
2317         guint32 i, visib;
2318
2319         /* add a cache if needed */
2320         for (i = 1; i <= t->rows; ++i) {
2321                 mono_metadata_decode_row (t, i - 1, cols, MONO_TYPEDEF_SIZE);
2322                 /* nested types are accessed from the nesting name */
2323                 visib = cols [MONO_TYPEDEF_FLAGS] & TYPE_ATTRIBUTE_VISIBILITY_MASK;
2324                 if (visib > TYPE_ATTRIBUTE_PUBLIC && visib <= TYPE_ATTRIBUTE_NESTED_ASSEMBLY)
2325                         continue;
2326                 n = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAME]);
2327                 nspace = mono_metadata_string_heap (image, cols [MONO_TYPEDEF_NAMESPACE]);
2328                 if (g_strcasecmp (n, name) == 0 && g_strcasecmp (nspace, name_space) == 0)
2329                         return mono_class_get (image, MONO_TOKEN_TYPE_DEF | i);
2330         }
2331         return NULL;
2332 }
2333
2334 static MonoClass*
2335 return_nested_in (MonoClass *class, char *nested) {
2336         MonoClass *found;
2337         char *s = strchr (nested, '/');
2338         GList *tmp;
2339
2340         if (s) {
2341                 *s = 0;
2342                 s++;
2343         }
2344         for (tmp = class->nested_classes; tmp; tmp = tmp->next) {
2345                 found = tmp->data;
2346                 if (strcmp (found->name, nested) == 0) {
2347                         if (s)
2348                                 return return_nested_in (found, s);
2349                         return found;
2350                 }
2351         }
2352         return NULL;
2353 }
2354
2355 MonoClass *
2356 mono_class_from_name (MonoImage *image, const char* name_space, const char *name)
2357 {
2358         GHashTable *nspace_table;
2359         MonoImage *loaded_image;
2360         guint32 token = 0;
2361         MonoClass *class;
2362         char *nested;
2363         char buf [1024];
2364
2365         if ((nested = strchr (name, '/'))) {
2366                 int pos = nested - name;
2367                 int len = strlen (name);
2368                 if (len > 1023)
2369                         return NULL;
2370                 memcpy (buf, name, len + 1);
2371                 buf [pos] = 0;
2372                 nested = buf + pos + 1;
2373                 name = buf;
2374         }
2375
2376         mono_loader_lock ();
2377
2378         nspace_table = g_hash_table_lookup (image->name_cache, name_space);
2379
2380         if (nspace_table)
2381                 token = GPOINTER_TO_UINT (g_hash_table_lookup (nspace_table, name));
2382
2383         mono_loader_unlock ();
2384
2385         if (!token)
2386                 return NULL;
2387
2388         if (mono_metadata_token_table (token) == MONO_TABLE_EXPORTEDTYPE) {
2389                 MonoTableInfo  *t = &image->tables [MONO_TABLE_EXPORTEDTYPE];
2390                 guint32 cols [MONO_EXP_TYPE_SIZE];
2391                 guint32 idx, impl;
2392
2393                 idx = mono_metadata_token_index (token);
2394
2395                 mono_metadata_decode_row (t, idx - 1, cols, MONO_EXP_TYPE_SIZE);
2396
2397                 impl = cols [MONO_EXP_TYPE_IMPLEMENTATION];
2398                 if ((impl & IMPLEMENTATION_MASK) == IMPLEMENTATION_FILE) {
2399                         loaded_image = mono_assembly_load_module (image->assembly, impl >> IMPLEMENTATION_BITS);
2400                         if (!loaded_image)
2401                                 return NULL;
2402                         class = mono_class_from_name (loaded_image, name_space, name);
2403                         if (nested)
2404                                 return return_nested_in (class, nested);
2405                         return class;
2406                 } else {
2407                         g_error ("not yet implemented");
2408                 }
2409         }
2410
2411         token = MONO_TOKEN_TYPE_DEF | token;
2412
2413         class = mono_class_get (image, token);
2414         if (nested)
2415                 return return_nested_in (class, nested);
2416         return class;
2417 }
2418
2419 gboolean
2420 mono_class_is_subclass_of (MonoClass *klass, MonoClass *klassc,
2421                                                    gboolean check_interfaces)
2422 {
2423         if (check_interfaces && (klassc->flags & TYPE_ATTRIBUTE_INTERFACE) && !(klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
2424                 if ((klassc->interface_id <= klass->max_interface_id) &&
2425                         (klass->interface_offsets [klassc->interface_id] >= 0))
2426                         return TRUE;
2427         } else if (check_interfaces && (klassc->flags & TYPE_ATTRIBUTE_INTERFACE) && (klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
2428                 int i;
2429
2430                 for (i = 0; i < klass->interface_count; i ++) {
2431                         MonoClass *ic =  klass->interfaces [i];
2432                         if (ic == klassc)
2433                                 return TRUE;
2434                 }
2435         } else {
2436                 if (!(klass->flags & TYPE_ATTRIBUTE_INTERFACE) && mono_class_has_parent (klass, klassc))
2437                         return TRUE;
2438         }
2439
2440         /*
2441          * MS.NET thinks interfaces are a subclass of Object, so we think it as
2442          * well.
2443          */
2444         if (klassc == mono_defaults.object_class)
2445                 return TRUE;
2446
2447         return FALSE;
2448 }
2449
2450 gboolean
2451 mono_class_is_assignable_from (MonoClass *klass, MonoClass *oklass)
2452 {
2453         if (!klass->inited)
2454                 mono_class_init (klass);
2455
2456         if (!oklass->inited)
2457                 mono_class_init (oklass);
2458
2459         if (klass->flags & TYPE_ATTRIBUTE_INTERFACE) {
2460                 if ((klass->interface_id <= oklass->max_interface_id) &&
2461                     (oklass->interface_offsets [klass->interface_id] != -1))
2462                         return TRUE;
2463         } else
2464                 if (klass->rank) {
2465                         MonoClass *eclass, *eoclass;
2466
2467                         if (oklass->rank != klass->rank)
2468                                 return FALSE;
2469
2470                         /* vectors vs. one dimensional arrays */
2471                         if (oklass->byval_arg.type != klass->byval_arg.type)
2472                                 return FALSE;
2473
2474                         eclass = klass->cast_class;
2475                         eoclass = oklass->cast_class;
2476
2477
2478                         /*
2479                          * a is b does not imply a[] is b[] when a is a valuetype, and
2480                          * b is a reference type.
2481                          */
2482
2483                         if (eoclass->valuetype) {
2484                                 if ((eclass == mono_defaults.enum_class) ||
2485                                         (eclass == mono_defaults.enum_class->parent) ||
2486                                         (eclass == mono_defaults.object_class))
2487                                         return FALSE;
2488                         }
2489
2490                         return mono_class_is_assignable_from (klass->cast_class, oklass->cast_class);
2491                 }
2492         else
2493                 if (klass == mono_defaults.object_class)
2494                         return TRUE;
2495
2496         return mono_class_has_parent (oklass, klass);
2497 }
2498
2499 /*
2500  * mono_class_needs_cctor_run:
2501  *
2502  *  Determines whenever the class has a static constructor and whenever it
2503  * needs to be called when executing CALLER.
2504  */
2505 gboolean
2506 mono_class_needs_cctor_run (MonoClass *klass, MonoMethod *caller)
2507 {
2508         int i;
2509         MonoMethod *method;
2510
2511         for (i = 0; i < klass->method.count; ++i) {
2512                 method = klass->methods [i];
2513                 if ((method->flags & METHOD_ATTRIBUTE_SPECIAL_NAME) &&
2514                     (strcmp (".cctor", method->name) == 0)) {
2515                         if (caller == method)
2516                                 return FALSE;
2517                         return TRUE;
2518                 }
2519         }
2520         return FALSE;
2521 }
2522
2523 /*
2524  * Returns the nnumber of bytes an element of type klass
2525  * uses when stored into an array.
2526  */
2527 gint32
2528 mono_class_array_element_size (MonoClass *klass)
2529 {
2530         int t = klass->byval_arg.type;
2531
2532 handle_enum:
2533         switch (t) {
2534         case MONO_TYPE_I1:
2535         case MONO_TYPE_U1:
2536         case MONO_TYPE_BOOLEAN:
2537                 return 1;
2538         case MONO_TYPE_I2:
2539         case MONO_TYPE_U2:
2540         case MONO_TYPE_CHAR:
2541                 return 2;
2542         case MONO_TYPE_I4:
2543         case MONO_TYPE_U4:
2544         case MONO_TYPE_R4:
2545                 return 4;
2546         case MONO_TYPE_I:
2547         case MONO_TYPE_U:
2548         case MONO_TYPE_PTR:
2549         case MONO_TYPE_CLASS:
2550         case MONO_TYPE_STRING:
2551         case MONO_TYPE_OBJECT:
2552         case MONO_TYPE_SZARRAY:
2553         case MONO_TYPE_ARRAY:
2554         case MONO_TYPE_VAR:
2555         case MONO_TYPE_MVAR:
2556                 return sizeof (gpointer);
2557         case MONO_TYPE_I8:
2558         case MONO_TYPE_U8:
2559         case MONO_TYPE_R8:
2560                 return 8;
2561         case MONO_TYPE_VALUETYPE:
2562                 if (klass->enumtype) {
2563                         t = klass->enum_basetype->type;
2564                         goto handle_enum;
2565                 }
2566                 return mono_class_instance_size (klass) - sizeof (MonoObject);
2567         default:
2568                 g_error ("unknown type 0x%02x in mono_class_array_element_size", t);
2569         }
2570         return -1;
2571 }
2572
2573 /**
2574  * mono_array_element_size:
2575  * @ac: pointer to a #MonoArrayClass
2576  *
2577  * Returns: the size of single array element.
2578  */
2579 gint32
2580 mono_array_element_size (MonoClass *ac)
2581 {
2582         return mono_class_array_element_size (ac->element_class);
2583 }
2584
2585 gpointer
2586 mono_ldtoken (MonoImage *image, guint32 token, MonoClass **handle_class)
2587 {
2588         if (image->dynamic) {
2589                 gpointer obj = mono_lookup_dynamic_token (image, token);
2590
2591                 switch (token & 0xff000000) {
2592                 case MONO_TOKEN_TYPE_DEF:
2593                 case MONO_TOKEN_TYPE_REF:
2594                 case MONO_TOKEN_TYPE_SPEC:
2595                         if (handle_class)
2596                                 *handle_class = mono_defaults.typehandle_class;
2597                         return &((MonoClass*)obj)->byval_arg;
2598                 case MONO_TOKEN_METHOD_DEF:
2599                         if (handle_class)
2600                                 *handle_class = mono_defaults.methodhandle_class;
2601                         return obj;
2602                 case MONO_TOKEN_FIELD_DEF:
2603                         if (handle_class)
2604                                 *handle_class = mono_defaults.fieldhandle_class;
2605                         return obj;
2606                 default:
2607                         g_assert_not_reached ();
2608                 }
2609         }
2610
2611         switch (token & 0xff000000) {
2612         case MONO_TOKEN_TYPE_DEF:
2613         case MONO_TOKEN_TYPE_REF: {
2614                 MonoClass *class;
2615                 if (handle_class)
2616                         *handle_class = mono_defaults.typehandle_class;
2617                 class = mono_class_get (image, token);
2618                 mono_class_init (class);
2619                 /* We return a MonoType* as handle */
2620                 return &class->byval_arg;
2621         }
2622         case MONO_TOKEN_TYPE_SPEC: {
2623                 MonoClass *class;
2624                 if (handle_class)
2625                         *handle_class = mono_defaults.typehandle_class;
2626                 class = mono_class_create_from_typespec (image, token);
2627                 mono_class_init (class);
2628                 return &class->byval_arg;
2629         }
2630         case MONO_TOKEN_FIELD_DEF: {
2631                 MonoClass *class;
2632                 guint32 type = mono_metadata_typedef_from_field (image, mono_metadata_token_index (token));
2633                 class = mono_class_get (image, MONO_TOKEN_TYPE_DEF | type);
2634                 mono_class_init (class);
2635                 if (handle_class)
2636                         *handle_class = mono_defaults.fieldhandle_class;
2637                 return mono_class_get_field (class, token);
2638         }
2639         case MONO_TOKEN_METHOD_DEF: {
2640                 MonoMethod *meth;
2641                 meth = mono_get_method (image, token, NULL);
2642                 if (handle_class)
2643                         *handle_class = mono_defaults.methodhandle_class;
2644                 return meth;
2645         }
2646         case MONO_TOKEN_MEMBER_REF: {
2647                 guint32 cols [MONO_MEMBERREF_SIZE];
2648                 const char *sig;
2649                 mono_metadata_decode_row (&image->tables [MONO_TABLE_MEMBERREF], mono_metadata_token_index (token) - 1, cols, MONO_MEMBERREF_SIZE);
2650                 sig = mono_metadata_blob_heap (image, cols [MONO_MEMBERREF_SIGNATURE]);
2651                 mono_metadata_decode_blob_size (sig, &sig);
2652                 if (*sig == 0x6) { /* it's a field */
2653                         MonoClass *klass;
2654                         MonoClassField *field;
2655                         field = mono_field_from_token (image, token, &klass);
2656                         if (handle_class)
2657                                 *handle_class = mono_defaults.fieldhandle_class;
2658                         return field;
2659                 } else {
2660                         MonoMethod *meth;
2661                         meth = mono_get_method (image, token, NULL);
2662                         if (handle_class)
2663                                 *handle_class = mono_defaults.methodhandle_class;
2664                         return meth;
2665                 }
2666         }
2667         default:
2668                 g_warning ("Unknown token 0x%08x in ldtoken", token);
2669                 break;
2670         }
2671         return NULL;
2672 }
2673
2674 /**
2675  * This function might need to call runtime functions so it can't be part
2676  * of the metadata library.
2677  */
2678 static MonoLookupDynamicToken lookup_dynamic = NULL;
2679
2680 void
2681 mono_install_lookup_dynamic_token (MonoLookupDynamicToken func)
2682 {
2683         lookup_dynamic = func;
2684 }
2685
2686 gpointer
2687 mono_lookup_dynamic_token (MonoImage *image, guint32 token)
2688 {
2689         return lookup_dynamic (image, token);
2690 }
2691
2692
2693