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 "c-objc.h"
  27
  28 tree
  29 objc_is_class_name (tree ARG_UNUSED (arg))
  30 {
  31   return 0;
  32 }
  33
  34 tree
  35 objc_is_id (tree ARG_UNUSED (arg))
  36 {
  37   return 0;
  38 }
  39
  40 tree
  41 objc_is_object_ptr (tree ARG_UNUSED (arg))
  42 {
  43   return 0;
  44 }
  45
  46 bool objc_diagnose_private_ivar (tree ARG_UNUSED (arg))
  47 {
  48   return false;
  49 }
  50
  51 tree
  52 objc_lookup_ivar (tree other, tree ARG_UNUSED (arg))
  53 {
  54   /* Just use whatever C/C++ found.  */
  55   return other;
  56 }
  57
  58 void
  59 objc_check_decl (tree ARG_UNUSED (decl))
  60 {
  61 }
  62
  63 void
  64 objc_check_global_decl (tree ARG_UNUSED (decl))
  65 {
  66 }
  67
  68 tree
  69 objc_common_type (tree ARG_UNUSED (type1), tree ARG_UNUSED (type2))
  70 {
  71   return 0;
  72 }
  73
  74 bool
  75 objc_compare_types (tree ARG_UNUSED (ltyp), tree ARG_UNUSED (rtyp),
  76                     int ARG_UNUSED (argno), tree ARG_UNUSED (callee))
  77 {
  78   return false;
  79 }
  80
  81 bool
  82 objc_have_common_type (tree ARG_UNUSED (ltyp), tree ARG_UNUSED (rtyp),
  83                        int ARG_UNUSED (argno), tree ARG_UNUSED (callee))
  84 {
  85   return false;
  86 }
  87
  88 void
  89 objc_volatilize_decl (tree ARG_UNUSED (decl))
  90 {
  91 }
  92
  93 tree
  94 objc_rewrite_function_call (tree function, tree ARG_UNUSED (first_param))
  95 {
  96   return function;
  97 }
  98
  99 tree
 100 objc_message_selector (void)
 101 {
 102   return 0;
 103 }
 104
 105 void
 106 objc_declare_alias (tree ARG_UNUSED (alias), tree ARG_UNUSED (orig))
 107 {
 108 }
 109
 110 void
 111 objc_declare_class (tree ARG_UNUSED (identifier))
 112 {
 113 }
 114
 115 void
 116 objc_declare_protocol (tree ARG_UNUSED (name), tree ARG_UNUSED (attributes))
 117 {
 118 }
 119
 120 void
 121 objc_start_protocol (tree ARG_UNUSED (proto),
 122                      tree ARG_UNUSED (protorefs),
 123                      tree ARG_UNUSED (attribs))
 124 {
 125 }
 126
 127 void
 128 objc_set_method_opt (bool ARG_UNUSED (optional))
 129 {
 130 }
 131
 132 void
 133 objc_start_class_interface (tree ARG_UNUSED (name),
 134                             tree ARG_UNUSED (super),
 135                             tree ARG_UNUSED (protos),
 136                             tree ARG_UNUSED (attribs))
 137 {
 138 }
 139
 140 void
 141 objc_start_category_interface (tree ARG_UNUSED (name),
 142                                tree ARG_UNUSED (categ),
 143                                tree ARG_UNUSED (protos),
 144                                tree ARG_UNUSED (attribs))
 145 {
 146 }
 147
 148 void
 149 objc_continue_interface (void)
 150 {
 151 }
 152
 153 void
 154 objc_finish_interface (void)
 155 {
 156 }
 157
 158 void
 159 objc_add_instance_variable (tree ARG_UNUSED (decl))
 160 {
 161 }
 162
 163 void
 164 objc_set_visibility (objc_ivar_visibility_kind ARG_UNUSED (vis))
 165 {
 166 }
 167
 168 void
 169 objc_start_class_implementation (tree ARG_UNUSED (name),
 170                                  tree ARG_UNUSED (super))
 171 {
 172 }
 173
 174 void
 175 objc_start_category_implementation (tree ARG_UNUSED (name),
 176                                     tree ARG_UNUSED (categ))
 177 {
 178 }
 179
 180 void
 181 objc_continue_implementation (void)
 182 {
 183 }
 184
 185 void
 186 objc_clear_super_receiver (void)
 187 {
 188 }
 189
 190 void
 191 objc_finish_implementation (void)
 192 {
 193 }
 194
 195 void
 196 objc_add_method_declaration (bool ARG_UNUSED (is_class_method),
 197                              tree ARG_UNUSED (signature),
 198                              tree ARG_UNUSED (attributes))
 199 {
 200 }
 201
 202 bool
 203 objc_start_method_definition (bool ARG_UNUSED (is_class_method),
 204                               tree ARG_UNUSED (signature),
 205                               tree ARG_UNUSED (attributes),
 206                               tree ARG_UNUSED (expr))
 207 {
 208   return true;
 209 }
 210
 211 void
 212 objc_finish_method_definition (tree ARG_UNUSED (fndecl))
 213 {
 214 }
 215
 216 bool
 217 objc_method_decl (enum tree_code ARG_UNUSED(opcode))
 218 {
 219   return false;
 220 }
 221
 222 tree
 223 objc_build_keyword_decl (tree ARG_UNUSED (selector),
 224                          tree ARG_UNUSED (type),
 225                          tree ARG_UNUSED (identifier),
 226                          tree ARG_UNUSED (attributes))
 227 {
 228   return 0;
 229 }
 230
 231 tree
 232 objc_build_method_signature (bool ARG_UNUSED (is_class_method),
 233                              tree ARG_UNUSED (rettype),
 234                              tree ARG_UNUSED (selectors),
 235                              tree ARG_UNUSED (optparms),
 236                              bool ARG_UNUSED (ellipsis))
 237 {
 238   return 0;
 239 }
 240
 241 tree
 242 objc_build_encode_expr (tree ARG_UNUSED (expr))
 243 {
 244   return 0;
 245 }
 246
 247 tree
 248 objc_build_protocol_expr (tree ARG_UNUSED (expr))
 249 {
 250   return 0;
 251 }
 252
 253 tree
 254 objc_build_selector_expr (location_t ARG_UNUSED (loc), tree ARG_UNUSED (expr))
 255 {
 256   return 0;
 257 }
 258
 259 tree
 260 objc_build_message_expr (tree ARG_UNUSED (receiver), tree ARG_UNUSED (args))
 261 {
 262   return 0;
 263 }
 264
 265 tree
 266 objc_build_string_object (tree ARG_UNUSED (str))
 267 {
 268   return 0;
 269 }
 270
 271 tree
 272 objc_get_class_reference (tree ARG_UNUSED (name))
 273 {
 274   return 0;
 275 }
 276
 277 bool
 278 objc_detect_field_duplicates (bool ARG_UNUSED (check_superclasses_only))
 279 {
 280   return false;
 281 }
 282
 283 tree
 284 objc_get_protocol_qualified_type (tree ARG_UNUSED (name),
 285                                   tree ARG_UNUSED (protos))
 286 {
 287   return 0;
 288 }
 289
 290 int
 291 objc_static_init_needed_p (void)
 292 {
 293   return 0;
 294 }
 295
 296 tree
 297 objc_generate_static_init_call (tree ARG_UNUSED (ctors))
 298 {
 299   return 0;
 300 }
 301
 302 int
 303 objc_is_public (tree ARG_UNUSED (expr), tree ARG_UNUSED (identifier))
 304 {
 305   return 1;
 306 }
 307
 308 tree
 309 objc_get_class_ivars (tree ARG_UNUSED (name))
 310 {
 311   return 0;
 312 }
 313
 314 void
 315 objc_add_property_declaration (location_t ARG_UNUSED (location),
 316                                tree ARG_UNUSED (decl),
 317                                bool ARG_UNUSED (parsed_property_readonly),
 318                                bool ARG_UNUSED (parsed_property_readwrite),
 319                                bool ARG_UNUSED (parsed_property_assign),
 320                                bool ARG_UNUSED (parsed_property_retain),
 321                                bool ARG_UNUSED (parsed_property_copy),
 322                                bool ARG_UNUSED (parsed_property_nonatomic),
 323                                tree ARG_UNUSED (parsed_property_getter_ident),
 324                                tree ARG_UNUSED (parsed_property_setter_ident))
 325 {
 326 }
 327
 328 bool
 329 objc_is_property_ref (tree ARG_UNUSED (node))
 330 {
 331   return 0;
 332 }
 333
 334 tree
 335 objc_maybe_build_component_ref (tree ARG_UNUSED (datum), tree ARG_UNUSED (component))
 336 {
 337   return 0;
 338 }
 339
 340 tree
 341 objc_build_class_component_ref (tree ARG_UNUSED (datum), tree ARG_UNUSED (component))
 342 {
 343   return 0;
 344 }
 345
 346 tree
 347 objc_maybe_build_modify_expr (tree ARG_UNUSED (lhs), tree ARG_UNUSED (rhs))
 348 {
 349   return 0;
 350 }
 351
 352 tree
 353 objc_build_incr_expr_for_property_ref (location_t ARG_UNUSED (location),
 354                                        enum tree_code ARG_UNUSED (code),
 355                                        tree ARG_UNUSED (argument),
 356                                        tree ARG_UNUSED (increment))
 357 {
 358   return 0;
 359 }
 360
 361 void
 362 objc_add_synthesize_declaration (location_t ARG_UNUSED (start_locus),
 363                                  tree ARG_UNUSED (property_and_ivar_list))
 364 {
 365 }
 366
 367 void
 368 objc_add_dynamic_declaration (location_t ARG_UNUSED (start_locus),
 369                               tree ARG_UNUSED (property_list))
 370 {
 371 }
 372
 373 const char *
 374 objc_maybe_printable_name (tree ARG_UNUSED (decl),
 375                            int ARG_UNUSED (v))
 376 {
 377   return NULL;
 378 }
 379
 380 tree
 381 objc_build_throw_stmt (location_t ARG_UNUSED (loc), tree ARG_UNUSED (expr))
 382 {
 383   return 0;
 384 }
 385
 386 tree
 387 objc_build_synchronized (location_t ARG_UNUSED (start_locus),
 388                          tree ARG_UNUSED (mutex), tree ARG_UNUSED (body))
 389 {
 390   return 0;
 391 }
 392
 393 void
 394 objc_begin_try_stmt (location_t ARG_UNUSED (try_locus), tree ARG_UNUSED (body))
 395 {
 396 }
 397
 398 void
 399 objc_begin_catch_clause (tree ARG_UNUSED (decl))
 400 {
 401 }
 402
 403 void
 404 objc_finish_catch_clause (void)
 405 {
 406 }
 407
 408 void
 409 objc_build_finally_clause (location_t ARG_UNUSED (finally_locus),
 410                            tree ARG_UNUSED (body))
 411 {
 412 }
 413
 414 tree
 415 objc_finish_try_stmt (void)
 416 {
 417   return 0;
 418 }
 419
 420 tree
 421 objc_generate_write_barrier (tree ARG_UNUSED (lhs),
 422                              enum tree_code ARG_UNUSED (modifycode),
 423                              tree ARG_UNUSED (rhs))
 424 {
 425   return 0;
 426 }
 427
 428 void
 429 objc_finish_foreach_loop (location_t ARG_UNUSED (location), tree ARG_UNUSED (object_expression),
 430                           tree ARG_UNUSED (collection_expression), tree ARG_UNUSED (for_body),
 431                           tree ARG_UNUSED (break_label), tree ARG_UNUSED (continue_label))
 432 {
 433   return;
 434 }
 435
 436 void
 437 objc_write_global_declarations (void)
 438 {
 439 }
 440
 441 bool
 442 objc_string_ref_type_p (tree ARG_UNUSED (strp))
 443 {
 444    return false;
 445 }
 446
 447 void
 448 objc_check_format_arg (tree ARG_UNUSED (format_arg),
 449                        tree ARG_UNUSED (args_list))
 450 {
 451 }
 452
 453 void
 454 objc_finish_function (void)
 455 {
 456 }
 457
 458 void
 459 objc_maybe_warn_exceptions (location_t ARG_UNUSED (loc))
 460 {
 461 }