gcc/objc/objc-act.h

   1 /* Declarations for objc-act.c.
   2    Copyright (C) 1990, 2000, 2001, 2002, 2003, 2004
   3    Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 #ifndef GCC_OBJC_ACT_H
  23 #define GCC_OBJC_ACT_H
  24
  25 /*** Language hooks ***/
  26
  27 bool objc_init (void);
  28 const char *objc_printable_name (tree, int);
  29 void objc_finish_file (void);
  30 tree objc_fold_obj_type_ref (tree, tree);
  31
  32 /* NB: The remaining public functions are prototyped in c-common.h, for the
  33    benefit of stub-objc.c and objc-act.c.  */
  34
  35 /* Objective-C structures */
  36
  37 #define CLASS_LANG_SLOT_ELTS            5
  38 #define PROTOCOL_LANG_SLOT_ELTS         2
  39
  40 /* KEYWORD_DECL */
  41 #define KEYWORD_KEY_NAME(DECL) ((DECL)->decl.name)
  42 #define KEYWORD_ARG_NAME(DECL) ((DECL)->decl.arguments)
  43
  44 /* INSTANCE_METHOD_DECL, CLASS_METHOD_DECL */
  45 #define METHOD_SEL_NAME(DECL) ((DECL)->decl.name)
  46 #define METHOD_SEL_ARGS(DECL) ((DECL)->decl.arguments)
  47 #define METHOD_ADD_ARGS(DECL) ((DECL)->decl.result)
  48 #define METHOD_DEFINITION(DECL) ((DECL)->decl.initial)
  49 #define METHOD_ENCODING(DECL) ((DECL)->decl.context)
  50
  51 /* CLASS_INTERFACE_TYPE, CLASS_IMPLEMENTATION_TYPE,
  52    CATEGORY_INTERFACE_TYPE, CATEGORY_IMPLEMENTATION_TYPE,
  53    PROTOCOL_INTERFACE_TYPE */
  54 #define CLASS_NAME(CLASS) ((CLASS)->type.name)
  55 #define CLASS_SUPER_NAME(CLASS) (TYPE_CHECK (CLASS)->type.context)
  56 #define CLASS_IVARS(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 0)
  57 #define CLASS_RAW_IVARS(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 1)
  58 #define CLASS_NST_METHODS(CLASS) ((CLASS)->type.minval)
  59 #define CLASS_CLS_METHODS(CLASS) ((CLASS)->type.maxval)
  60 #define CLASS_STATIC_TEMPLATE(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 2)
  61 #define CLASS_CATEGORY_LIST(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 3)
  62 #define CLASS_PROTOCOL_LIST(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 4)
  63 #define PROTOCOL_NAME(CLASS) ((CLASS)->type.name)
  64 #define PROTOCOL_LIST(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 0)
  65 #define PROTOCOL_NST_METHODS(CLASS) ((CLASS)->type.minval)
  66 #define PROTOCOL_CLS_METHODS(CLASS) ((CLASS)->type.maxval)
  67 #define PROTOCOL_FORWARD_DECL(CLASS) TREE_VEC_ELT (TYPE_LANG_SLOT_1 (CLASS), 1)
  68 #define PROTOCOL_DEFINED(CLASS) TREE_USED (CLASS)
  69
  70 /* We need to distinguish TYPE_PROTOCOL_LISTs from TYPE_CONTEXTs, both of which
  71    are stored in the same accessor slot.  */
  72 #define TYPE_PROTOCOL_LIST(TYPE)                                \
  73         ((TYPE_CHECK (TYPE)->type.context                       \
  74           && TREE_CODE ((TYPE)->type.context) == TREE_LIST)     \
  75          ? (TYPE)->type.context : NULL_TREE)
  76 #define SET_TYPE_PROTOCOL_LIST(TYPE, P) (TYPE_CHECK (TYPE)->type.context = (P))
  77
  78 #define TREE_STATIC_TEMPLATE(record_type) (TREE_PUBLIC (record_type))
  79 #define TYPED_OBJECT(type) \
  80        (TREE_CODE (type) == RECORD_TYPE && TREE_STATIC_TEMPLATE (type))
  81 #define OBJC_TYPE_NAME(type) TYPE_NAME(type)
  82 #define OBJC_SET_TYPE_NAME(type, name) (TYPE_NAME (type) = name)
  83
  84 /* Define the Objective-C or Objective-C++ language-specific tree codes.  */
  85
  86 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) SYM,
  87 enum objc_tree_code {
  88 #if defined (GCC_CP_TREE_H)
  89   LAST_BASE_TREE_CODE = LAST_CPLUS_TREE_CODE,
  90 #else
  91 #if defined (GCC_C_TREE_H)
  92   LAST_BASE_TREE_CODE = LAST_C_TREE_CODE,
  93 #else
  94   #error You must include <c-tree.h> or <cp/cp-tree.h> before <objc/objc-act.h>
  95 #endif
  96 #endif
  97 #include "objc-tree.def"
  98   LAST_OBJC_TREE_CODE
  99 };
 100 #undef DEFTREECODE
 101
 102 /* Hash tables to manage the global pool of method prototypes.  */
 103
 104 typedef struct hashed_entry     *hash;
 105 typedef struct hashed_attribute *attr;
 106
 107 struct hashed_attribute GTY(())
 108 {
 109   attr next;
 110   tree value;
 111 };
 112 struct hashed_entry GTY(())
 113 {
 114   attr list;
 115   hash next;
 116   tree key;
 117 };
 118
 119 extern GTY ((length ("SIZEHASHTABLE"))) hash *nst_method_hash_list;
 120 extern GTY ((length ("SIZEHASHTABLE"))) hash *cls_method_hash_list;
 121
 122 #define SIZEHASHTABLE           257
 123
 124 /* Objective-C/Objective-C++ @implementation list.  */
 125
 126 struct imp_entry GTY(())
 127 {
 128   struct imp_entry *next;
 129   tree imp_context;
 130   tree imp_template;
 131   tree class_decl;              /* _OBJC_CLASS_<my_name>; */
 132   tree meta_decl;               /* _OBJC_METACLASS_<my_name>; */
 133 };
 134
 135 extern GTY(()) struct imp_entry *imp_list;
 136 extern GTY(()) int imp_count;   /* `@implementation' */
 137 extern GTY(()) int cat_count;   /* `@category' */
 138
 139 extern GTY(()) enum tree_code objc_inherit_code;
 140 extern GTY(()) int objc_public_flag;
 141
 142 /* Objective-C/Objective-C++ global tree enumeration.  */
 143
 144 enum objc_tree_index
 145 {
 146     OCTI_STATIC_NST,
 147     OCTI_STATIC_NST_DECL,
 148     OCTI_SELF_ID,
 149     OCTI_UCMD_ID,
 150     OCTI_UNUSED_LIST,
 151
 152     OCTI_SELF_DECL,
 153     OCTI_UMSG_DECL,
 154     OCTI_UMSG_SUPER_DECL,
 155     OCTI_UMSG_STRET_DECL,
 156     OCTI_UMSG_SUPER_STRET_DECL,
 157     OCTI_GET_CLASS_DECL,
 158     OCTI_GET_MCLASS_DECL,
 159     OCTI_SUPER_TYPE,
 160     OCTI_SEL_TYPE,
 161     OCTI_ID_TYPE,
 162     OCTI_CLS_TYPE,
 163     OCTI_NST_TYPE,
 164     OCTI_PROTO_TYPE,
 165
 166     OCTI_CLS_CHAIN,
 167     OCTI_ALIAS_CHAIN,
 168     OCTI_INTF_CHAIN,
 169     OCTI_PROTO_CHAIN,
 170     OCTI_IMPL_CHAIN,
 171     OCTI_CLS_REF_CHAIN,
 172     OCTI_SEL_REF_CHAIN,
 173     OCTI_IVAR_CHAIN,
 174     OCTI_CLS_NAMES_CHAIN,
 175     OCTI_METH_VAR_NAMES_CHAIN,
 176     OCTI_METH_VAR_TYPES_CHAIN,
 177
 178     OCTI_SYMBOLS_DECL,
 179     OCTI_NST_VAR_DECL,
 180     OCTI_CLS_VAR_DECL,
 181     OCTI_NST_METH_DECL,
 182     OCTI_CLS_METH_DECL,
 183     OCTI_CLS_DECL,
 184     OCTI_MCLS_DECL,
 185     OCTI_SEL_TABLE_DECL,
 186     OCTI_MODULES_DECL,
 187     OCTI_GNU_INIT_DECL,
 188
 189     OCTI_INTF_CTX,
 190     OCTI_IMPL_CTX,
 191     OCTI_METH_CTX,
 192     OCTI_IVAR_CTX,
 193
 194     OCTI_IMPL_TEMPL,
 195     OCTI_CLS_TEMPL,
 196     OCTI_CAT_TEMPL,
 197     OCTI_UPRIV_REC,
 198     OCTI_PROTO_TEMPL,
 199     OCTI_SEL_TEMPL,
 200     OCTI_UCLS_SUPER_REF,
 201     OCTI_UUCLS_SUPER_REF,
 202     OCTI_METH_TEMPL,
 203     OCTI_IVAR_TEMPL,
 204     OCTI_SYMTAB_TEMPL,
 205     OCTI_MODULE_TEMPL,
 206     OCTI_SUPER_TEMPL,
 207     OCTI_OBJ_REF,
 208     OCTI_CLS_REF,
 209     OCTI_METH_PROTO_TEMPL,
 210     OCTI_FUNCTION1_TEMPL,
 211     OCTI_FUNCTION2_TEMPL,
 212
 213     OCTI_OBJ_ID,
 214     OCTI_CLS_ID,
 215     OCTI_ID_NAME,
 216     OCTI_CLASS_NAME,
 217     OCTI_CNST_STR_ID,
 218     OCTI_CNST_STR_TYPE,
 219     OCTI_CNST_STR_GLOB_ID,
 220     OCTI_STRING_CLASS_DECL,
 221     OCTI_SUPER_DECL,
 222     OCTI_UMSG_NONNIL_DECL,
 223     OCTI_UMSG_NONNIL_STRET_DECL,
 224     OCTI_STORAGE_CLS,
 225     OCTI_EXCEPTION_EXTRACT_DECL,
 226     OCTI_EXCEPTION_TRY_ENTER_DECL,
 227     OCTI_EXCEPTION_TRY_EXIT_DECL,
 228     OCTI_EXCEPTION_MATCH_DECL,
 229     OCTI_EXCEPTION_THROW_DECL,
 230     OCTI_SYNC_ENTER_DECL,
 231     OCTI_SYNC_EXIT_DECL,
 232     OCTI_SETJMP_DECL,
 233     OCTI_EXCDATA_TEMPL,
 234     OCTI_STACK_EXCEPTION_DATA_DECL,
 235     OCTI_LOCAL_EXCEPTION_DECL,
 236     OCTI_RETHROW_EXCEPTION_DECL,
 237     OCTI_EVAL_ONCE_DECL,
 238     OCTI_CATCH_TYPE,
 239     OCTI_EXECCLASS_DECL,
 240
 241     OCTI_MAX
 242 };
 243
 244 extern GTY(()) tree objc_global_trees[OCTI_MAX];
 245
 246 /* List of classes with list of their static instances.  */
 247 #define objc_static_instances   objc_global_trees[OCTI_STATIC_NST]
 248
 249 /* The declaration of the array administrating the static instances.  */
 250 #define static_instances_decl   objc_global_trees[OCTI_STATIC_NST_DECL]
 251
 252 /* Some commonly used instances of "identifier_node".  */
 253
 254 #define self_id                 objc_global_trees[OCTI_SELF_ID]
 255 #define ucmd_id                 objc_global_trees[OCTI_UCMD_ID]
 256 #define unused_list             objc_global_trees[OCTI_UNUSED_LIST]
 257
 258 #define self_decl               objc_global_trees[OCTI_SELF_DECL]
 259 #define umsg_decl               objc_global_trees[OCTI_UMSG_DECL]
 260 #define umsg_super_decl         objc_global_trees[OCTI_UMSG_SUPER_DECL]
 261 #define umsg_stret_decl         objc_global_trees[OCTI_UMSG_STRET_DECL]
 262 #define umsg_super_stret_decl   objc_global_trees[OCTI_UMSG_SUPER_STRET_DECL]
 263 #define objc_get_class_decl     objc_global_trees[OCTI_GET_CLASS_DECL]
 264 #define objc_get_meta_class_decl                        \
 265                                 objc_global_trees[OCTI_GET_MCLASS_DECL]
 266
 267 #define objc_super_type         objc_global_trees[OCTI_SUPER_TYPE]
 268 #define objc_selector_type              objc_global_trees[OCTI_SEL_TYPE]
 269 #define objc_object_type        objc_global_trees[OCTI_ID_TYPE]
 270 #define objc_class_type         objc_global_trees[OCTI_CLS_TYPE]
 271 #define objc_instance_type      objc_global_trees[OCTI_NST_TYPE]
 272 #define objc_protocol_type      objc_global_trees[OCTI_PROTO_TYPE]
 273
 274 /* Type checking macros.  */
 275
 276 #define IS_ID(TYPE) \
 277   (POINTER_TYPE_P (TYPE) && TREE_TYPE (TYPE) == TREE_TYPE (objc_object_type))
 278 #define IS_CLASS(TYPE) \
 279   (POINTER_TYPE_P (TYPE) && TREE_TYPE (TYPE) == TREE_TYPE (objc_class_type))
 280 #define IS_PROTOCOL_QUALIFIED_ID(TYPE) \
 281   (IS_ID (TYPE) && TYPE_PROTOCOL_LIST (TYPE))
 282 #define IS_SUPER(TYPE) \
 283   (POINTER_TYPE_P (TYPE) && TREE_TYPE (TYPE) == objc_super_template)
 284
 285 #define class_chain             objc_global_trees[OCTI_CLS_CHAIN]
 286 #define alias_chain             objc_global_trees[OCTI_ALIAS_CHAIN]
 287 #define interface_chain         objc_global_trees[OCTI_INTF_CHAIN]
 288 #define protocol_chain          objc_global_trees[OCTI_PROTO_CHAIN]
 289 #define implemented_classes     objc_global_trees[OCTI_IMPL_CHAIN]
 290
 291 /* Chains to manage selectors that are referenced and defined in the
 292    module.  */
 293
 294 #define cls_ref_chain           objc_global_trees[OCTI_CLS_REF_CHAIN]   /* Classes referenced.  */
 295 #define sel_ref_chain           objc_global_trees[OCTI_SEL_REF_CHAIN]   /* Selectors referenced.  */
 296 #define objc_ivar_chain         objc_global_trees[OCTI_IVAR_CHAIN]
 297
 298 /* Chains to manage uniquing of strings.  */
 299
 300 #define class_names_chain       objc_global_trees[OCTI_CLS_NAMES_CHAIN]
 301 #define meth_var_names_chain    objc_global_trees[OCTI_METH_VAR_NAMES_CHAIN]
 302 #define meth_var_types_chain    objc_global_trees[OCTI_METH_VAR_TYPES_CHAIN]
 303
 304
 305 /* Backend data declarations.  */
 306
 307 #define UOBJC_SYMBOLS_decl              objc_global_trees[OCTI_SYMBOLS_DECL]
 308 #define UOBJC_INSTANCE_VARIABLES_decl   objc_global_trees[OCTI_NST_VAR_DECL]
 309 #define UOBJC_CLASS_VARIABLES_decl      objc_global_trees[OCTI_CLS_VAR_DECL]
 310 #define UOBJC_INSTANCE_METHODS_decl     objc_global_trees[OCTI_NST_METH_DECL]
 311 #define UOBJC_CLASS_METHODS_decl        objc_global_trees[OCTI_CLS_METH_DECL]
 312 #define UOBJC_CLASS_decl                objc_global_trees[OCTI_CLS_DECL]
 313 #define UOBJC_METACLASS_decl            objc_global_trees[OCTI_MCLS_DECL]
 314 #define UOBJC_SELECTOR_TABLE_decl       objc_global_trees[OCTI_SEL_TABLE_DECL]
 315 #define UOBJC_MODULES_decl              objc_global_trees[OCTI_MODULES_DECL]
 316 #define GNU_INIT_decl                   objc_global_trees[OCTI_GNU_INIT_DECL]
 317
 318 /* The following are used when compiling a class implementation.
 319    implementation_template will normally be an interface, however if
 320    none exists this will be equal to objc_implementation_context...it is
 321    set in start_class.  */
 322
 323 #define objc_interface_context          objc_global_trees[OCTI_INTF_CTX]
 324 #define objc_implementation_context     objc_global_trees[OCTI_IMPL_CTX]
 325 #define objc_method_context             objc_global_trees[OCTI_METH_CTX]
 326 #define objc_ivar_context               objc_global_trees[OCTI_IVAR_CTX]
 327
 328 #define implementation_template objc_global_trees[OCTI_IMPL_TEMPL]
 329 #define objc_class_template     objc_global_trees[OCTI_CLS_TEMPL]
 330 #define objc_category_template  objc_global_trees[OCTI_CAT_TEMPL]
 331 #define uprivate_record         objc_global_trees[OCTI_UPRIV_REC]
 332 #define objc_protocol_template  objc_global_trees[OCTI_PROTO_TEMPL]
 333 #define objc_selector_template  objc_global_trees[OCTI_SEL_TEMPL]
 334 #define ucls_super_ref          objc_global_trees[OCTI_UCLS_SUPER_REF]
 335 #define uucls_super_ref         objc_global_trees[OCTI_UUCLS_SUPER_REF]
 336
 337 #define umsg_nonnil_decl        objc_global_trees[OCTI_UMSG_NONNIL_DECL]
 338 #define umsg_nonnil_stret_decl  objc_global_trees[OCTI_UMSG_NONNIL_STRET_DECL]
 339 #define objc_storage_class      objc_global_trees[OCTI_STORAGE_CLS]
 340 #define objc_exception_extract_decl             \
 341                                 objc_global_trees[OCTI_EXCEPTION_EXTRACT_DECL]
 342 #define objc_exception_try_enter_decl           \
 343                                 objc_global_trees[OCTI_EXCEPTION_TRY_ENTER_DECL]
 344 #define objc_exception_try_exit_decl            \
 345                                 objc_global_trees[OCTI_EXCEPTION_TRY_EXIT_DECL]
 346 #define objc_exception_match_decl               \
 347                                 objc_global_trees[OCTI_EXCEPTION_MATCH_DECL]
 348 #define objc_exception_throw_decl               \
 349                                 objc_global_trees[OCTI_EXCEPTION_THROW_DECL]
 350 #define objc_sync_enter_decl    objc_global_trees[OCTI_SYNC_ENTER_DECL]
 351 #define objc_sync_exit_decl     objc_global_trees[OCTI_SYNC_EXIT_DECL]
 352 #define objc_exception_data_template            \
 353                                 objc_global_trees[OCTI_EXCDATA_TEMPL]
 354 #define objc_setjmp_decl        objc_global_trees[OCTI_SETJMP_DECL]
 355 #define objc_stack_exception_data               \
 356                                 objc_global_trees[OCTI_STACK_EXCEPTION_DATA_DECL]
 357 #define objc_caught_exception   objc_global_trees[OCTI_LOCAL_EXCEPTION_DECL]
 358 #define objc_rethrow_exception  objc_global_trees[OCTI_RETHROW_EXCEPTION_DECL]
 359 #define objc_eval_once          objc_global_trees[OCTI_EVAL_ONCE_DECL]
 360 #define objc_catch_type         objc_global_trees[OCTI_CATCH_TYPE]
 361
 362 #define execclass_decl          objc_global_trees[OCTI_EXECCLASS_DECL]
 363
 364 #define objc_method_template    objc_global_trees[OCTI_METH_TEMPL]
 365 #define objc_ivar_template      objc_global_trees[OCTI_IVAR_TEMPL]
 366 #define objc_symtab_template    objc_global_trees[OCTI_SYMTAB_TEMPL]
 367 #define objc_module_template    objc_global_trees[OCTI_MODULE_TEMPL]
 368 #define objc_super_template     objc_global_trees[OCTI_SUPER_TEMPL]
 369 #define objc_object_reference   objc_global_trees[OCTI_OBJ_REF]
 370 #define objc_class_reference    objc_global_trees[OCTI_CLS_REF]
 371 #define objc_method_prototype_template          \
 372                                 objc_global_trees[OCTI_METH_PROTO_TEMPL]
 373 #define function1_template      objc_global_trees[OCTI_FUNCTION1_TEMPL]
 374 #define function2_template      objc_global_trees[OCTI_FUNCTION2_TEMPL]
 375
 376 #define objc_object_id          objc_global_trees[OCTI_OBJ_ID]
 377 #define objc_class_id           objc_global_trees[OCTI_CLS_ID]
 378 #define objc_object_name                objc_global_trees[OCTI_ID_NAME]
 379 #define objc_class_name         objc_global_trees[OCTI_CLASS_NAME]
 380 #define constant_string_id      objc_global_trees[OCTI_CNST_STR_ID]
 381 #define constant_string_type    objc_global_trees[OCTI_CNST_STR_TYPE]
 382 #define constant_string_global_id               \
 383                                 objc_global_trees[OCTI_CNST_STR_GLOB_ID]
 384 #define string_class_decl       objc_global_trees[OCTI_STRING_CLASS_DECL]
 385 #define UOBJC_SUPER_decl        objc_global_trees[OCTI_SUPER_DECL]
 386
 387 #endif /* GCC_OBJC_ACT_H */