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 /* Provide a dummy type for the RID enum used as an argument to
  29    objc_prop_attr_kind_for_rid () */
  30 enum rid { DUMMY };
  31
  32 #include "c-objc.h"
  33
  34 tree
  35 objc_is_class_name (tree ARG_UNUSED (arg))
  36 {
  37   return 0;
  38 }
  39
  40 tree
  41 objc_is_id (tree ARG_UNUSED (arg))
  42 {
  43   return 0;
  44 }
  45
  46 tree
  47 objc_is_object_ptr (tree ARG_UNUSED (arg))
  48 {
  49   return 0;
  50 }
  51
  52 bool objc_diagnose_private_ivar (tree ARG_UNUSED (arg))
  53 {
  54   return false;
  55 }
  56
  57 tree
  58 objc_lookup_ivar (tree other, tree ARG_UNUSED (arg))
  59 {
  60   /* Just use whatever C/C++ found.  */
  61   return other;
  62 }
  63
  64 void
  65 objc_check_decl (tree ARG_UNUSED (decl))
  66 {
  67 }
  68
  69 void
  70 objc_check_global_decl (tree ARG_UNUSED (decl))
  71 {
  72 }
  73
  74 tree
  75 objc_common_type (tree ARG_UNUSED (type1), tree ARG_UNUSED (type2))
  76 {
  77   return 0;
  78 }
  79
  80 bool
  81 objc_compare_types (tree ARG_UNUSED (ltyp), tree ARG_UNUSED (rtyp),
  82                     int ARG_UNUSED (argno), tree ARG_UNUSED (callee))
  83 {
  84   return false;
  85 }
  86
  87 bool
  88 objc_have_common_type (tree ARG_UNUSED (ltyp), tree ARG_UNUSED (rtyp),
  89                        int ARG_UNUSED (argno), tree ARG_UNUSED (callee))
  90 {
  91   return false;
  92 }
  93
  94 void
  95 objc_volatilize_decl (tree ARG_UNUSED (decl))
  96 {
  97 }
  98
  99 tree
 100 objc_rewrite_function_call (tree function, tree ARG_UNUSED (first_param))
 101 {
 102   return function;
 103 }
 104
 105 tree
 106 objc_message_selector (void)
 107 {
 108   return 0;
 109 }
 110
 111 void
 112 objc_declare_alias (tree ARG_UNUSED (alias), tree ARG_UNUSED (orig))
 113 {
 114 }
 115
 116 void
 117 objc_declare_class (tree ARG_UNUSED (identifier))
 118 {
 119 }
 120
 121 void
 122 objc_declare_protocol (tree ARG_UNUSED (name), tree ARG_UNUSED (attributes))
 123 {
 124 }
 125
 126 void
 127 objc_start_protocol (tree ARG_UNUSED (proto),
 128                      tree ARG_UNUSED (protorefs),
 129                      tree ARG_UNUSED (attribs))
 130 {
 131 }
 132
 133 void
 134 objc_set_method_opt (bool ARG_UNUSED (optional))
 135 {
 136 }
 137
 138 void
 139 objc_start_class_interface (tree ARG_UNUSED (name),
 140                             location_t /*name_loc*/,
 141                             tree ARG_UNUSED (super),
 142                             tree ARG_UNUSED (protos),
 143                             tree ARG_UNUSED (attribs))
 144 {
 145 }
 146
 147 void
 148 objc_start_category_interface (tree ARG_UNUSED (name),
 149                                tree ARG_UNUSED (categ),
 150                                tree ARG_UNUSED (protos),
 151                                tree ARG_UNUSED (attribs))
 152 {
 153 }
 154
 155 void
 156 objc_continue_interface (void)
 157 {
 158 }
 159
 160 void
 161 objc_finish_interface (void)
 162 {
 163 }
 164
 165 void
 166 objc_add_instance_variable (tree ARG_UNUSED (decl))
 167 {
 168 }
 169
 170 void
 171 objc_set_visibility (objc_ivar_visibility_kind ARG_UNUSED (vis))
 172 {
 173 }
 174
 175 void
 176 objc_start_class_implementation (tree ARG_UNUSED (name),
 177                                  tree ARG_UNUSED (super))
 178 {
 179 }
 180
 181 void
 182 objc_start_category_implementation (tree ARG_UNUSED (name),
 183                                     tree ARG_UNUSED (categ))
 184 {
 185 }
 186
 187 void
 188 objc_continue_implementation (void)
 189 {
 190 }
 191
 192 void
 193 objc_clear_super_receiver (void)
 194 {
 195 }
 196
 197 void
 198 objc_finish_implementation (void)
 199 {
 200 }
 201
 202 void
 203 objc_add_method_declaration (bool ARG_UNUSED (is_class_method),
 204                              tree ARG_UNUSED (signature),
 205                              tree ARG_UNUSED (attributes))
 206 {
 207 }
 208
 209 bool
 210 objc_start_method_definition (bool ARG_UNUSED (is_class_method),
 211                               tree ARG_UNUSED (signature),
 212                               tree ARG_UNUSED (attributes),
 213                               tree ARG_UNUSED (expr))
 214 {
 215   return true;
 216 }
 217
 218 void
 219 objc_finish_method_definition (tree ARG_UNUSED (fndecl))
 220 {
 221 }
 222
 223 bool
 224 objc_method_decl (enum tree_code ARG_UNUSED(opcode))
 225 {
 226   return false;
 227 }
 228
 229 tree
 230 objc_build_keyword_decl (tree ARG_UNUSED (selector),
 231                          tree ARG_UNUSED (type),
 232                          tree ARG_UNUSED (identifier),
 233                          tree ARG_UNUSED (attributes))
 234 {
 235   return 0;
 236 }
 237
 238 tree
 239 objc_build_method_signature (bool ARG_UNUSED (is_class_method),
 240                              tree ARG_UNUSED (rettype),
 241                              tree ARG_UNUSED (selectors),
 242                              tree ARG_UNUSED (optparms),
 243                              bool ARG_UNUSED (ellipsis))
 244 {
 245   return 0;
 246 }
 247
 248 tree
 249 objc_build_encode_expr (tree ARG_UNUSED (expr))
 250 {
 251   return 0;
 252 }
 253
 254 tree
 255 objc_build_protocol_expr (tree ARG_UNUSED (expr))
 256 {
 257   return 0;
 258 }
 259
 260 tree
 261 objc_build_selector_expr (location_t ARG_UNUSED (loc), tree ARG_UNUSED (expr))
 262 {
 263   return 0;
 264 }
 265
 266 tree
 267 objc_build_message_expr (tree ARG_UNUSED (receiver), tree ARG_UNUSED (args))
 268 {
 269   return 0;
 270 }
 271
 272 tree
 273 objc_build_string_object (tree ARG_UNUSED (str))
 274 {
 275   return 0;
 276 }
 277
 278 tree
 279 objc_get_class_reference (tree ARG_UNUSED (name))
 280 {
 281   return 0;
 282 }
 283
 284 bool
 285 objc_detect_field_duplicates (bool ARG_UNUSED (check_superclasses_only))
 286 {
 287   return false;
 288 }
 289
 290 tree
 291 objc_get_protocol_qualified_type (tree ARG_UNUSED (name),
 292                                   tree ARG_UNUSED (protos))
 293 {
 294   return 0;
 295 }
 296
 297 int
 298 objc_static_init_needed_p (void)
 299 {
 300   return 0;
 301 }
 302
 303 tree
 304 objc_generate_static_init_call (tree ARG_UNUSED (ctors))
 305 {
 306   return 0;
 307 }
 308
 309 int
 310 objc_is_public (tree ARG_UNUSED (expr), tree ARG_UNUSED (identifier))
 311 {
 312   return 1;
 313 }
 314
 315 tree
 316 objc_get_class_ivars (tree ARG_UNUSED (name))
 317 {
 318   return 0;
 319 }
 320
 321 void
 322 objc_add_property_declaration (location_t ARG_UNUSED (location),
 323                                tree ARG_UNUSED (decl),
 324                                vec<property_attribute_info *>&
 325                                /*prop_attr_list*/)
 326 {
 327 }
 328
 329 bool
 330 objc_is_property_ref (tree ARG_UNUSED (node))
 331 {
 332   return 0;
 333 }
 334
 335 bool
 336 objc_non_constant_expr_p (tree)
 337 {
 338   return 0;
 339 }
 340
 341 tree
 342 objc_maybe_build_component_ref (tree ARG_UNUSED (datum), tree ARG_UNUSED (component))
 343 {
 344   return 0;
 345 }
 346
 347 tree
 348 objc_build_class_component_ref (tree ARG_UNUSED (datum), tree ARG_UNUSED (component))
 349 {
 350   return 0;
 351 }
 352
 353 tree
 354 objc_maybe_build_modify_expr (tree ARG_UNUSED (lhs), tree ARG_UNUSED (rhs))
 355 {
 356   return 0;
 357 }
 358
 359 tree
 360 objc_build_incr_expr_for_property_ref (location_t ARG_UNUSED (location),
 361                                        enum tree_code ARG_UNUSED (code),
 362                                        tree ARG_UNUSED (argument),
 363                                        tree ARG_UNUSED (increment))
 364 {
 365   return 0;
 366 }
 367
 368 void
 369 objc_add_synthesize_declaration (location_t ARG_UNUSED (start_locus),
 370                                  tree ARG_UNUSED (property_and_ivar_list))
 371 {
 372 }
 373
 374 void
 375 objc_add_dynamic_declaration (location_t ARG_UNUSED (start_locus),
 376                               tree ARG_UNUSED (property_list))
 377 {
 378 }
 379
 380 const char *
 381 objc_maybe_printable_name (tree ARG_UNUSED (decl),
 382                            int ARG_UNUSED (v))
 383 {
 384   return NULL;
 385 }
 386
 387 tree
 388 objc_build_throw_stmt (location_t ARG_UNUSED (loc), tree ARG_UNUSED (expr))
 389 {
 390   return 0;
 391 }
 392
 393 tree
 394 objc_build_synchronized (location_t ARG_UNUSED (start_locus),
 395                          tree ARG_UNUSED (mutex), tree ARG_UNUSED (body))
 396 {
 397   return 0;
 398 }
 399
 400 void
 401 objc_begin_try_stmt (location_t ARG_UNUSED (try_locus), tree ARG_UNUSED (body))
 402 {
 403 }
 404
 405 void
 406 objc_begin_catch_clause (tree ARG_UNUSED (decl))
 407 {
 408 }
 409
 410 void
 411 objc_finish_catch_clause (void)
 412 {
 413 }
 414
 415 void
 416 objc_build_finally_clause (location_t ARG_UNUSED (finally_locus),
 417                            tree ARG_UNUSED (body))
 418 {
 419 }
 420
 421 tree
 422 objc_finish_try_stmt (void)
 423 {
 424   return 0;
 425 }
 426
 427 tree
 428 objc_generate_write_barrier (tree ARG_UNUSED (lhs),
 429                              enum tree_code ARG_UNUSED (modifycode),
 430                              tree ARG_UNUSED (rhs))
 431 {
 432   return 0;
 433 }
 434
 435 void
 436 objc_finish_foreach_loop (location_t ARG_UNUSED (location), tree ARG_UNUSED (object_expression),
 437                           tree ARG_UNUSED (collection_expression), tree ARG_UNUSED (for_body),
 438                           tree ARG_UNUSED (break_label), tree ARG_UNUSED (continue_label))
 439 {
 440   return;
 441 }
 442
 443 void
 444 objc_write_global_declarations (void)
 445 {
 446 }
 447
 448 bool
 449 objc_string_ref_type_p (tree ARG_UNUSED (strp))
 450 {
 451    return false;
 452 }
 453
 454 void
 455 objc_check_format_arg (tree ARG_UNUSED (format_arg),
 456                        tree ARG_UNUSED (args_list))
 457 {
 458 }
 459
 460 void
 461 objc_finish_function (void)
 462 {
 463 }
 464
 465 void
 466 objc_maybe_warn_exceptions (location_t ARG_UNUSED (loc))
 467 {
 468 }
 469
 470 enum objc_property_attribute_kind objc_prop_attr_kind_for_rid (enum rid)
 471 {
 472   return OBJC_PROPERTY_ATTR_UNKNOWN;
 473 }