gcc/c-family/stub-objc.c

   1 /* Stub functions for Objective-C and Objective-C++ routines
   2    that are called from within the C and C++ front-ends,
   3    respectively.
   4    Copyright (C) 1991-2020 Free Software Foundation, Inc.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 3, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 #include "config.h"
  23 #include "system.h"
  24 #include "coretypes.h"
  25 #include "tree.h"
  26 #include "vec.h"
  27
  28 #include "c-common.h" /* for enum rid.  */
  29 #include "c-objc.h"
  30
  31 tree
  32 objc_is_class_name (tree ARG_UNUSED (arg))
  33 {
  34   return 0;
  35 }
  36
  37 tree
  38 objc_is_id (tree ARG_UNUSED (arg))
  39 {
  40   return 0;
  41 }
  42
  43 tree
  44 objc_is_object_ptr (tree ARG_UNUSED (arg))
  45 {
  46   return 0;
  47 }
  48
  49 bool objc_diagnose_private_ivar (tree ARG_UNUSED (arg))
  50 {
  51   return false;
  52 }
  53
  54 tree
  55 objc_lookup_ivar (tree other, tree ARG_UNUSED (arg))
  56 {
  57   /* Just use whatever C/C++ found.  */
  58   return other;
  59 }
  60
  61 void
  62 objc_check_decl (tree ARG_UNUSED (decl))
  63 {
  64 }
  65
  66 void
  67 objc_check_global_decl (tree ARG_UNUSED (decl))
  68 {
  69 }
  70
  71 tree
  72 objc_common_type (tree ARG_UNUSED (type1), tree ARG_UNUSED (type2))
  73 {
  74   return 0;
  75 }
  76
  77 bool
  78 objc_compare_types (tree ARG_UNUSED (ltyp), tree ARG_UNUSED (rtyp),
  79                     int ARG_UNUSED (argno), tree ARG_UNUSED (callee))
  80 {
  81   return false;
  82 }
  83
  84 bool
  85 objc_have_common_type (tree ARG_UNUSED (ltyp), tree ARG_UNUSED (rtyp),
  86                        int ARG_UNUSED (argno), tree ARG_UNUSED (callee))
  87 {
  88   return false;
  89 }
  90
  91 void
  92 objc_volatilize_decl (tree ARG_UNUSED (decl))
  93 {
  94 }
  95
  96 tree
  97 objc_rewrite_function_call (tree function, tree ARG_UNUSED (first_param))
  98 {
  99   return function;
 100 }
 101
 102 tree
 103 objc_message_selector (void)
 104 {
 105   return 0;
 106 }
 107
 108 void
 109 objc_declare_alias (tree ARG_UNUSED (alias), tree ARG_UNUSED (orig))
 110 {
 111 }
 112
 113 void
 114 objc_declare_class (tree ARG_UNUSED (identifier))
 115 {
 116 }
 117
 118 void
 119 objc_declare_protocol (tree ARG_UNUSED (name), tree ARG_UNUSED (attributes))
 120 {
 121 }
 122
 123 void
 124 objc_start_protocol (tree ARG_UNUSED (proto),
 125                      tree ARG_UNUSED (protorefs),
 126                      tree ARG_UNUSED (attribs))
 127 {
 128 }
 129
 130 void
 131 objc_set_method_opt (bool ARG_UNUSED (optional))
 132 {
 133 }
 134
 135 void
 136 objc_start_class_interface (tree ARG_UNUSED (name),
 137                             location_t /*name_loc*/,
 138                             tree ARG_UNUSED (super),
 139                             tree ARG_UNUSED (protos),
 140                             tree ARG_UNUSED (attribs))
 141 {
 142 }
 143
 144 void
 145 objc_start_category_interface (tree ARG_UNUSED (name),
 146                                tree ARG_UNUSED (categ),
 147                                tree ARG_UNUSED (protos),
 148                                tree ARG_UNUSED (attribs))
 149 {
 150 }
 151
 152 void
 153 objc_continue_interface (void)
 154 {
 155 }
 156
 157 void
 158 objc_finish_interface (void)
 159 {
 160 }
 161
 162 void
 163 objc_add_instance_variable (tree ARG_UNUSED (decl))
 164 {
 165 }
 166
 167 void
 168 objc_set_visibility (objc_ivar_visibility_kind ARG_UNUSED (vis))
 169 {
 170 }
 171
 172 void
 173 objc_start_class_implementation (tree ARG_UNUSED (name),
 174                                  tree ARG_UNUSED (super))
 175 {
 176 }
 177
 178 void
 179 objc_start_category_implementation (tree ARG_UNUSED (name),
 180                                     tree ARG_UNUSED (categ))
 181 {
 182 }
 183
 184 void
 185 objc_continue_implementation (void)
 186 {
 187 }
 188
 189 void
 190 objc_clear_super_receiver (void)
 191 {
 192 }
 193
 194 void
 195 objc_finish_implementation (void)
 196 {
 197 }
 198
 199 void
 200 objc_add_method_declaration (bool ARG_UNUSED (is_class_method),
 201                              tree ARG_UNUSED (signature),
 202                              tree ARG_UNUSED (attributes))
 203 {
 204 }
 205
 206 bool
 207 objc_start_method_definition (bool ARG_UNUSED (is_class_method),
 208                               tree ARG_UNUSED (signature),
 209                               tree ARG_UNUSED (attributes),
 210                               tree ARG_UNUSED (expr))
 211 {
 212   return true;
 213 }
 214
 215 void
 216 objc_finish_method_definition (tree ARG_UNUSED (fndecl))
 217 {
 218 }
 219
 220 bool
 221 objc_method_decl (enum tree_code ARG_UNUSED(opcode))
 222 {
 223   return false;
 224 }
 225
 226 tree
 227 objc_build_keyword_decl (tree ARG_UNUSED (selector),
 228                          tree ARG_UNUSED (type),
 229                          tree ARG_UNUSED (identifier),
 230                          tree ARG_UNUSED (attributes))
 231 {
 232   return 0;
 233 }
 234
 235 tree
 236 objc_build_method_signature (bool ARG_UNUSED (is_class_method),
 237                              tree ARG_UNUSED (rettype),
 238                              tree ARG_UNUSED (selectors),
 239                              tree ARG_UNUSED (optparms),
 240                              bool ARG_UNUSED (ellipsis))
 241 {
 242   return 0;
 243 }
 244
 245 tree
 246 objc_build_encode_expr (tree ARG_UNUSED (expr))
 247 {
 248   return 0;
 249 }
 250
 251 tree
 252 objc_build_protocol_expr (tree ARG_UNUSED (expr))
 253 {
 254   return 0;
 255 }
 256
 257 tree
 258 objc_build_selector_expr (location_t ARG_UNUSED (loc), tree ARG_UNUSED (expr))
 259 {
 260   return 0;
 261 }
 262
 263 tree
 264 objc_build_message_expr (tree ARG_UNUSED (receiver), tree ARG_UNUSED (args))
 265 {
 266   return 0;
 267 }
 268
 269 tree
 270 objc_build_string_object (tree ARG_UNUSED (str))
 271 {
 272   return 0;
 273 }
 274
 275 tree
 276 objc_get_class_reference (tree ARG_UNUSED (name))
 277 {
 278   return 0;
 279 }
 280
 281 bool
 282 objc_detect_field_duplicates (bool ARG_UNUSED (check_superclasses_only))
 283 {
 284   return false;
 285 }
 286
 287 tree
 288 objc_get_protocol_qualified_type (tree ARG_UNUSED (name),
 289                                   tree ARG_UNUSED (protos))
 290 {
 291   return 0;
 292 }
 293
 294 int
 295 objc_static_init_needed_p (void)
 296 {
 297   return 0;
 298 }
 299
 300 tree
 301 objc_generate_static_init_call (tree ARG_UNUSED (ctors))
 302 {
 303   return 0;
 304 }
 305
 306 int
 307 objc_is_public (tree ARG_UNUSED (expr), tree ARG_UNUSED (identifier))
 308 {
 309   return 1;
 310 }
 311
 312 tree
 313 objc_get_class_ivars (tree ARG_UNUSED (name))
 314 {
 315   return 0;
 316 }
 317
 318 void
 319 objc_add_property_declaration (location_t ARG_UNUSED (location),
 320                                tree ARG_UNUSED (decl),
 321                                vec<property_attribute_info *>&
 322                                /*prop_attr_list*/)
 323 {
 324 }
 325
 326 bool
 327 objc_is_property_ref (tree ARG_UNUSED (node))
 328 {
 329   return 0;
 330 }
 331
 332 bool
 333 objc_non_constant_expr_p (tree)
 334 {
 335   return 0;
 336 }
 337
 338 tree
 339 objc_maybe_build_component_ref (tree ARG_UNUSED (datum), tree ARG_UNUSED (component))
 340 {
 341   return 0;
 342 }
 343
 344 tree
 345 objc_build_class_component_ref (tree ARG_UNUSED (datum), tree ARG_UNUSED (component))
 346 {
 347   return 0;
 348 }
 349
 350 tree
 351 objc_maybe_build_modify_expr (tree ARG_UNUSED (lhs), tree ARG_UNUSED (rhs))
 352 {
 353   return 0;
 354 }
 355
 356 tree
 357 objc_build_incr_expr_for_property_ref (location_t ARG_UNUSED (location),
 358                                        enum tree_code ARG_UNUSED (code),
 359                                        tree ARG_UNUSED (argument),
 360                                        tree ARG_UNUSED (increment))
 361 {
 362   return 0;
 363 }
 364
 365 void
 366 objc_add_synthesize_declaration (location_t ARG_UNUSED (start_locus),
 367                                  tree ARG_UNUSED (property_and_ivar_list))
 368 {
 369 }
 370
 371 void
 372 objc_add_dynamic_declaration (location_t ARG_UNUSED (start_locus),
 373                               tree ARG_UNUSED (property_list))
 374 {
 375 }
 376
 377 const char *
 378 objc_maybe_printable_name (tree ARG_UNUSED (decl),
 379                            int ARG_UNUSED (v))
 380 {
 381   return NULL;
 382 }
 383
 384 tree
 385 objc_build_throw_stmt (location_t ARG_UNUSED (loc), tree ARG_UNUSED (expr))
 386 {
 387   return 0;
 388 }
 389
 390 tree
 391 objc_build_synchronized (location_t ARG_UNUSED (start_locus),
 392                          tree ARG_UNUSED (mutex), tree ARG_UNUSED (body))
 393 {
 394   return 0;
 395 }
 396
 397 void
 398 objc_begin_try_stmt (location_t ARG_UNUSED (try_locus), tree ARG_UNUSED (body))
 399 {
 400 }
 401
 402 void
 403 objc_begin_catch_clause (tree ARG_UNUSED (decl))
 404 {
 405 }
 406
 407 void
 408 objc_finish_catch_clause (void)
 409 {
 410 }
 411
 412 void
 413 objc_build_finally_clause (location_t ARG_UNUSED (finally_locus),
 414                            tree ARG_UNUSED (body))
 415 {
 416 }
 417
 418 tree
 419 objc_finish_try_stmt (void)
 420 {
 421   return 0;
 422 }
 423
 424 tree
 425 objc_generate_write_barrier (tree ARG_UNUSED (lhs),
 426                              enum tree_code ARG_UNUSED (modifycode),
 427                              tree ARG_UNUSED (rhs))
 428 {
 429   return 0;
 430 }
 431
 432 void
 433 objc_finish_foreach_loop (location_t ARG_UNUSED (location), tree ARG_UNUSED (object_expression),
 434                           tree ARG_UNUSED (collection_expression), tree ARG_UNUSED (for_body),
 435                           tree ARG_UNUSED (break_label), tree ARG_UNUSED (continue_label))
 436 {
 437   return;
 438 }
 439
 440 void
 441 objc_write_global_declarations (void)
 442 {
 443 }
 444
 445 bool
 446 objc_string_ref_type_p (tree ARG_UNUSED (strp))
 447 {
 448    return false;
 449 }
 450
 451 void
 452 objc_check_format_arg (tree ARG_UNUSED (format_arg),
 453                        tree ARG_UNUSED (args_list))
 454 {
 455 }
 456
 457 void
 458 objc_finish_function (void)
 459 {
 460 }
 461
 462 void
 463 objc_maybe_warn_exceptions (location_t ARG_UNUSED (loc))
 464 {
 465 }
 466
 467 enum objc_property_attribute_kind objc_prop_attr_kind_for_rid (enum rid)
 468 {
 469   return OBJC_PROPERTY_ATTR_UNKNOWN;
 470 }