| 1 | /* Definitions for expressions in GDB |
| 2 | |
| 3 | Copyright (C) 2020 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program 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 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #ifndef EXPOP_H |
| 21 | #define EXPOP_H |
| 22 | |
| 23 | #include "block.h" |
| 24 | #include "c-lang.h" |
| 25 | #include "cp-abi.h" |
| 26 | #include "expression.h" |
| 27 | #include "objfiles.h" |
| 28 | #include "gdbsupport/traits.h" |
| 29 | #include "gdbsupport/enum-flags.h" |
| 30 | |
| 31 | struct agent_expr; |
| 32 | struct axs_value; |
| 33 | |
| 34 | extern void gen_expr_binop (struct expression *exp, |
| 35 | enum exp_opcode op, |
| 36 | expr::operation *lhs, expr::operation *rhs, |
| 37 | struct agent_expr *ax, struct axs_value *value); |
| 38 | extern void gen_expr_structop (struct expression *exp, |
| 39 | enum exp_opcode op, |
| 40 | expr::operation *lhs, |
| 41 | const char *name, |
| 42 | struct agent_expr *ax, struct axs_value *value); |
| 43 | extern void gen_expr_unop (struct expression *exp, |
| 44 | enum exp_opcode op, |
| 45 | expr::operation *lhs, |
| 46 | struct agent_expr *ax, struct axs_value *value); |
| 47 | |
| 48 | extern struct value *eval_op_scope (struct type *expect_type, |
| 49 | struct expression *exp, |
| 50 | enum noside noside, |
| 51 | struct type *type, const char *string); |
| 52 | extern struct value *eval_op_var_msym_value (struct type *expect_type, |
| 53 | struct expression *exp, |
| 54 | enum noside noside, |
| 55 | bool outermost_p, |
| 56 | bound_minimal_symbol msymbol); |
| 57 | extern struct value *eval_op_var_entry_value (struct type *expect_type, |
| 58 | struct expression *exp, |
| 59 | enum noside noside, symbol *sym); |
| 60 | extern struct value *eval_op_func_static_var (struct type *expect_type, |
| 61 | struct expression *exp, |
| 62 | enum noside noside, |
| 63 | value *func, const char *var); |
| 64 | extern struct value *eval_op_register (struct type *expect_type, |
| 65 | struct expression *exp, |
| 66 | enum noside noside, const char *name); |
| 67 | extern struct value *eval_op_string (struct type *expect_type, |
| 68 | struct expression *exp, |
| 69 | enum noside noside, int len, |
| 70 | const char *string); |
| 71 | extern struct value *eval_op_ternop (struct type *expect_type, |
| 72 | struct expression *exp, |
| 73 | enum noside noside, |
| 74 | struct value *array, struct value *low, |
| 75 | struct value *upper); |
| 76 | extern struct value *eval_op_structop_struct (struct type *expect_type, |
| 77 | struct expression *exp, |
| 78 | enum noside noside, |
| 79 | struct value *arg1, |
| 80 | const char *string); |
| 81 | extern struct value *eval_op_structop_ptr (struct type *expect_type, |
| 82 | struct expression *exp, |
| 83 | enum noside noside, |
| 84 | struct value *arg1, |
| 85 | const char *string); |
| 86 | extern struct value *eval_op_member (struct type *expect_type, |
| 87 | struct expression *exp, |
| 88 | enum noside noside, |
| 89 | struct value *arg1, struct value *arg2); |
| 90 | extern struct value *eval_op_concat (struct type *expect_type, |
| 91 | struct expression *exp, |
| 92 | enum noside noside, |
| 93 | struct value *arg1, struct value *arg2); |
| 94 | extern struct value *eval_op_add (struct type *expect_type, |
| 95 | struct expression *exp, |
| 96 | enum noside noside, |
| 97 | struct value *arg1, struct value *arg2); |
| 98 | extern struct value *eval_op_sub (struct type *expect_type, |
| 99 | struct expression *exp, |
| 100 | enum noside noside, |
| 101 | struct value *arg1, struct value *arg2); |
| 102 | extern struct value *eval_op_binary (struct type *expect_type, |
| 103 | struct expression *exp, |
| 104 | enum noside noside, enum exp_opcode op, |
| 105 | struct value *arg1, struct value *arg2); |
| 106 | extern struct value *eval_op_subscript (struct type *expect_type, |
| 107 | struct expression *exp, |
| 108 | enum noside noside, enum exp_opcode op, |
| 109 | struct value *arg1, |
| 110 | struct value *arg2); |
| 111 | extern struct value *eval_op_equal (struct type *expect_type, |
| 112 | struct expression *exp, |
| 113 | enum noside noside, enum exp_opcode op, |
| 114 | struct value *arg1, |
| 115 | struct value *arg2); |
| 116 | extern struct value *eval_op_notequal (struct type *expect_type, |
| 117 | struct expression *exp, |
| 118 | enum noside noside, enum exp_opcode op, |
| 119 | struct value *arg1, |
| 120 | struct value *arg2); |
| 121 | extern struct value *eval_op_less (struct type *expect_type, |
| 122 | struct expression *exp, |
| 123 | enum noside noside, enum exp_opcode op, |
| 124 | struct value *arg1, |
| 125 | struct value *arg2); |
| 126 | extern struct value *eval_op_gtr (struct type *expect_type, |
| 127 | struct expression *exp, |
| 128 | enum noside noside, enum exp_opcode op, |
| 129 | struct value *arg1, |
| 130 | struct value *arg2); |
| 131 | extern struct value *eval_op_geq (struct type *expect_type, |
| 132 | struct expression *exp, |
| 133 | enum noside noside, enum exp_opcode op, |
| 134 | struct value *arg1, |
| 135 | struct value *arg2); |
| 136 | extern struct value *eval_op_leq (struct type *expect_type, |
| 137 | struct expression *exp, |
| 138 | enum noside noside, enum exp_opcode op, |
| 139 | struct value *arg1, |
| 140 | struct value *arg2); |
| 141 | extern struct value *eval_op_repeat (struct type *expect_type, |
| 142 | struct expression *exp, |
| 143 | enum noside noside, enum exp_opcode op, |
| 144 | struct value *arg1, |
| 145 | struct value *arg2); |
| 146 | extern struct value *eval_op_plus (struct type *expect_type, |
| 147 | struct expression *exp, |
| 148 | enum noside noside, enum exp_opcode op, |
| 149 | struct value *arg1); |
| 150 | extern struct value *eval_op_neg (struct type *expect_type, |
| 151 | struct expression *exp, |
| 152 | enum noside noside, enum exp_opcode op, |
| 153 | struct value *arg1); |
| 154 | extern struct value *eval_op_complement (struct type *expect_type, |
| 155 | struct expression *exp, |
| 156 | enum noside noside, |
| 157 | enum exp_opcode op, |
| 158 | struct value *arg1); |
| 159 | extern struct value *eval_op_lognot (struct type *expect_type, |
| 160 | struct expression *exp, |
| 161 | enum noside noside, |
| 162 | enum exp_opcode op, |
| 163 | struct value *arg1); |
| 164 | extern struct value *eval_op_preinc (struct type *expect_type, |
| 165 | struct expression *exp, |
| 166 | enum noside noside, |
| 167 | enum exp_opcode op, |
| 168 | struct value *arg1); |
| 169 | extern struct value *eval_op_predec (struct type *expect_type, |
| 170 | struct expression *exp, |
| 171 | enum noside noside, |
| 172 | enum exp_opcode op, |
| 173 | struct value *arg1); |
| 174 | extern struct value *eval_op_postinc (struct type *expect_type, |
| 175 | struct expression *exp, |
| 176 | enum noside noside, |
| 177 | enum exp_opcode op, |
| 178 | struct value *arg1); |
| 179 | extern struct value *eval_op_postdec (struct type *expect_type, |
| 180 | struct expression *exp, |
| 181 | enum noside noside, |
| 182 | enum exp_opcode op, |
| 183 | struct value *arg1); |
| 184 | extern struct value *eval_op_ind (struct type *expect_type, |
| 185 | struct expression *exp, |
| 186 | enum noside noside, |
| 187 | struct value *arg1); |
| 188 | extern struct value *eval_op_type (struct type *expect_type, |
| 189 | struct expression *exp, |
| 190 | enum noside noside, struct type *type); |
| 191 | extern struct value *eval_op_alignof (struct type *expect_type, |
| 192 | struct expression *exp, |
| 193 | enum noside noside, |
| 194 | struct value *arg1); |
| 195 | extern struct value *eval_op_memval (struct type *expect_type, |
| 196 | struct expression *exp, |
| 197 | enum noside noside, |
| 198 | struct value *arg1, struct type *type); |
| 199 | extern struct value *eval_binop_assign_modify (struct type *expect_type, |
| 200 | struct expression *exp, |
| 201 | enum noside noside, |
| 202 | enum exp_opcode op, |
| 203 | struct value *arg1, |
| 204 | struct value *arg2); |
| 205 | |
| 206 | namespace expr |
| 207 | { |
| 208 | |
| 209 | class ada_component; |
| 210 | |
| 211 | /* The check_objfile overloads are used to check whether a particular |
| 212 | component of some operation references an objfile. The passed-in |
| 213 | objfile will never be a debug objfile. */ |
| 214 | |
| 215 | /* See if EXP_OBJFILE matches OBJFILE. */ |
| 216 | static inline bool |
| 217 | check_objfile (struct objfile *exp_objfile, struct objfile *objfile) |
| 218 | { |
| 219 | if (exp_objfile->separate_debug_objfile_backlink) |
| 220 | exp_objfile = exp_objfile->separate_debug_objfile_backlink; |
| 221 | return exp_objfile == objfile; |
| 222 | } |
| 223 | |
| 224 | static inline bool |
| 225 | check_objfile (struct type *type, struct objfile *objfile) |
| 226 | { |
| 227 | struct objfile *ty_objfile = type->objfile_owner (); |
| 228 | if (ty_objfile != nullptr) |
| 229 | return check_objfile (ty_objfile, objfile); |
| 230 | return false; |
| 231 | } |
| 232 | |
| 233 | static inline bool |
| 234 | check_objfile (struct symbol *sym, struct objfile *objfile) |
| 235 | { |
| 236 | return check_objfile (symbol_objfile (sym), objfile); |
| 237 | } |
| 238 | |
| 239 | static inline bool |
| 240 | check_objfile (const struct block *block, struct objfile *objfile) |
| 241 | { |
| 242 | return check_objfile (block_objfile (block), objfile); |
| 243 | } |
| 244 | |
| 245 | static inline bool |
| 246 | check_objfile (bound_minimal_symbol minsym, struct objfile *objfile) |
| 247 | { |
| 248 | return check_objfile (minsym.objfile, objfile); |
| 249 | } |
| 250 | |
| 251 | static inline bool |
| 252 | check_objfile (internalvar *ivar, struct objfile *objfile) |
| 253 | { |
| 254 | return false; |
| 255 | } |
| 256 | |
| 257 | static inline bool |
| 258 | check_objfile (const std::string &str, struct objfile *objfile) |
| 259 | { |
| 260 | return false; |
| 261 | } |
| 262 | |
| 263 | static inline bool |
| 264 | check_objfile (const operation_up &op, struct objfile *objfile) |
| 265 | { |
| 266 | return op->uses_objfile (objfile); |
| 267 | } |
| 268 | |
| 269 | static inline bool |
| 270 | check_objfile (enum exp_opcode val, struct objfile *objfile) |
| 271 | { |
| 272 | return false; |
| 273 | } |
| 274 | |
| 275 | static inline bool |
| 276 | check_objfile (ULONGEST val, struct objfile *objfile) |
| 277 | { |
| 278 | return false; |
| 279 | } |
| 280 | |
| 281 | template<typename T> |
| 282 | static inline bool |
| 283 | check_objfile (enum_flags<T> val, struct objfile *objfile) |
| 284 | { |
| 285 | return false; |
| 286 | } |
| 287 | |
| 288 | template<typename T> |
| 289 | static inline bool |
| 290 | check_objfile (const std::vector<T> &collection, struct objfile *objfile) |
| 291 | { |
| 292 | for (const auto &item : collection) |
| 293 | { |
| 294 | if (check_objfile (item, objfile)) |
| 295 | return true; |
| 296 | } |
| 297 | return false; |
| 298 | } |
| 299 | |
| 300 | template<typename S, typename T> |
| 301 | static inline bool |
| 302 | check_objfile (const std::pair<S, T> &item, struct objfile *objfile) |
| 303 | { |
| 304 | return (check_objfile (item.first, objfile) |
| 305 | || check_objfile (item.second, objfile)); |
| 306 | } |
| 307 | |
| 308 | extern bool check_objfile (const std::unique_ptr<ada_component> &comp, |
| 309 | struct objfile *objfile); |
| 310 | |
| 311 | static inline void |
| 312 | dump_for_expression (struct ui_file *stream, int depth, |
| 313 | const operation_up &op) |
| 314 | { |
| 315 | op->dump (stream, depth); |
| 316 | } |
| 317 | |
| 318 | extern void dump_for_expression (struct ui_file *stream, int depth, |
| 319 | enum exp_opcode op); |
| 320 | extern void dump_for_expression (struct ui_file *stream, int depth, |
| 321 | const std::string &str); |
| 322 | extern void dump_for_expression (struct ui_file *stream, int depth, |
| 323 | struct type *type); |
| 324 | extern void dump_for_expression (struct ui_file *stream, int depth, |
| 325 | CORE_ADDR addr); |
| 326 | extern void dump_for_expression (struct ui_file *stream, int depth, |
| 327 | internalvar *ivar); |
| 328 | extern void dump_for_expression (struct ui_file *stream, int depth, |
| 329 | symbol *sym); |
| 330 | extern void dump_for_expression (struct ui_file *stream, int depth, |
| 331 | bound_minimal_symbol msym); |
| 332 | extern void dump_for_expression (struct ui_file *stream, int depth, |
| 333 | const block *bl); |
| 334 | extern void dump_for_expression (struct ui_file *stream, int depth, |
| 335 | type_instance_flags flags); |
| 336 | extern void dump_for_expression (struct ui_file *stream, int depth, |
| 337 | enum c_string_type_values flags); |
| 338 | extern void dump_for_expression (struct ui_file *stream, int depth, |
| 339 | enum range_flag flags); |
| 340 | extern void dump_for_expression (struct ui_file *stream, int depth, |
| 341 | const std::unique_ptr<ada_component> &comp); |
| 342 | |
| 343 | template<typename T> |
| 344 | void |
| 345 | dump_for_expression (struct ui_file *stream, int depth, |
| 346 | const std::vector<T> &vals) |
| 347 | { |
| 348 | fprintf_filtered (stream, _("%*sVector:\n"), depth, ""); |
| 349 | for (auto &item : vals) |
| 350 | dump_for_expression (stream, depth + 1, item); |
| 351 | } |
| 352 | |
| 353 | template<typename X, typename Y> |
| 354 | void |
| 355 | dump_for_expression (struct ui_file *stream, int depth, |
| 356 | const std::pair<X, Y> &vals) |
| 357 | { |
| 358 | dump_for_expression (stream, depth, vals.first); |
| 359 | dump_for_expression (stream, depth, vals.second); |
| 360 | } |
| 361 | |
| 362 | /* Base class for most concrete operations. This class holds data, |
| 363 | specified via template parameters, and supplies generic |
| 364 | implementations of the 'dump' and 'uses_objfile' methods. */ |
| 365 | template<typename... Arg> |
| 366 | class tuple_holding_operation : public operation |
| 367 | { |
| 368 | public: |
| 369 | |
| 370 | explicit tuple_holding_operation (Arg... args) |
| 371 | : m_storage (std::forward<Arg> (args)...) |
| 372 | { |
| 373 | } |
| 374 | |
| 375 | DISABLE_COPY_AND_ASSIGN (tuple_holding_operation); |
| 376 | |
| 377 | bool uses_objfile (struct objfile *objfile) const override |
| 378 | { |
| 379 | return do_check_objfile<0, Arg...> (objfile, m_storage); |
| 380 | } |
| 381 | |
| 382 | void dump (struct ui_file *stream, int depth) const override |
| 383 | { |
| 384 | dump_for_expression (stream, depth, opcode ()); |
| 385 | do_dump<0, Arg...> (stream, depth + 1, m_storage); |
| 386 | } |
| 387 | |
| 388 | protected: |
| 389 | |
| 390 | /* Storage for the data. */ |
| 391 | std::tuple<Arg...> m_storage; |
| 392 | |
| 393 | private: |
| 394 | |
| 395 | /* do_dump does the work of dumping the data. */ |
| 396 | template<int I, typename... T> |
| 397 | typename std::enable_if<I == sizeof... (T), void>::type |
| 398 | do_dump (struct ui_file *stream, int depth, const std::tuple<T...> &value) |
| 399 | const |
| 400 | { |
| 401 | } |
| 402 | |
| 403 | template<int I, typename... T> |
| 404 | typename std::enable_if<I < sizeof... (T), void>::type |
| 405 | do_dump (struct ui_file *stream, int depth, const std::tuple<T...> &value) |
| 406 | const |
| 407 | { |
| 408 | dump_for_expression (stream, depth, std::get<I> (value)); |
| 409 | do_dump<I + 1, T...> (stream, depth, value); |
| 410 | } |
| 411 | |
| 412 | /* do_check_objfile does the work of checking whether this object |
| 413 | refers to OBJFILE. */ |
| 414 | template<int I, typename... T> |
| 415 | typename std::enable_if<I == sizeof... (T), bool>::type |
| 416 | do_check_objfile (struct objfile *objfile, const std::tuple<T...> &value) |
| 417 | const |
| 418 | { |
| 419 | return false; |
| 420 | } |
| 421 | |
| 422 | template<int I, typename... T> |
| 423 | typename std::enable_if<I < sizeof... (T), bool>::type |
| 424 | do_check_objfile (struct objfile *objfile, const std::tuple<T...> &value) |
| 425 | const |
| 426 | { |
| 427 | if (check_objfile (std::get<I> (value), objfile)) |
| 428 | return true; |
| 429 | return do_check_objfile<I + 1, T...> (objfile, value); |
| 430 | } |
| 431 | }; |
| 432 | |
| 433 | /* The check_constant overloads are used to decide whether a given |
| 434 | concrete operation is a constant. This is done by checking the |
| 435 | operands. */ |
| 436 | |
| 437 | static inline bool |
| 438 | check_constant (const operation_up &item) |
| 439 | { |
| 440 | return item->constant_p (); |
| 441 | } |
| 442 | |
| 443 | static inline bool |
| 444 | check_constant (bound_minimal_symbol msym) |
| 445 | { |
| 446 | return false; |
| 447 | } |
| 448 | |
| 449 | static inline bool |
| 450 | check_constant (struct type *type) |
| 451 | { |
| 452 | return true; |
| 453 | } |
| 454 | |
| 455 | static inline bool |
| 456 | check_constant (const struct block *block) |
| 457 | { |
| 458 | return true; |
| 459 | } |
| 460 | |
| 461 | static inline bool |
| 462 | check_constant (const std::string &str) |
| 463 | { |
| 464 | return true; |
| 465 | } |
| 466 | |
| 467 | static inline bool |
| 468 | check_constant (ULONGEST cst) |
| 469 | { |
| 470 | return true; |
| 471 | } |
| 472 | |
| 473 | static inline bool |
| 474 | check_constant (struct symbol *sym) |
| 475 | { |
| 476 | enum address_class sc = SYMBOL_CLASS (sym); |
| 477 | return (sc == LOC_BLOCK |
| 478 | || sc == LOC_CONST |
| 479 | || sc == LOC_CONST_BYTES |
| 480 | || sc == LOC_LABEL); |
| 481 | } |
| 482 | |
| 483 | template<typename T> |
| 484 | static inline bool |
| 485 | check_constant (const std::vector<T> &collection) |
| 486 | { |
| 487 | for (const auto &item : collection) |
| 488 | if (!check_constant (item)) |
| 489 | return false; |
| 490 | return true; |
| 491 | } |
| 492 | |
| 493 | template<typename S, typename T> |
| 494 | static inline bool |
| 495 | check_constant (const std::pair<S, T> &item) |
| 496 | { |
| 497 | return check_constant (item.first) && check_constant (item.second); |
| 498 | } |
| 499 | |
| 500 | /* Base class for concrete operations. This class supplies an |
| 501 | implementation of 'constant_p' that works by checking the |
| 502 | operands. */ |
| 503 | template<typename... Arg> |
| 504 | class maybe_constant_operation |
| 505 | : public tuple_holding_operation<Arg...> |
| 506 | { |
| 507 | public: |
| 508 | |
| 509 | using tuple_holding_operation<Arg...>::tuple_holding_operation; |
| 510 | |
| 511 | bool constant_p () const override |
| 512 | { |
| 513 | return do_check_constant<0, Arg...> (this->m_storage); |
| 514 | } |
| 515 | |
| 516 | private: |
| 517 | |
| 518 | template<int I, typename... T> |
| 519 | typename std::enable_if<I == sizeof... (T), bool>::type |
| 520 | do_check_constant (const std::tuple<T...> &value) const |
| 521 | { |
| 522 | return true; |
| 523 | } |
| 524 | |
| 525 | template<int I, typename... T> |
| 526 | typename std::enable_if<I < sizeof... (T), bool>::type |
| 527 | do_check_constant (const std::tuple<T...> &value) const |
| 528 | { |
| 529 | if (!check_constant (std::get<I> (value))) |
| 530 | return false; |
| 531 | return do_check_constant<I + 1, T...> (value); |
| 532 | } |
| 533 | }; |
| 534 | |
| 535 | /* A floating-point constant. The constant is encoded in the target |
| 536 | format. */ |
| 537 | |
| 538 | typedef std::array<gdb_byte, 16> float_data; |
| 539 | |
| 540 | /* An operation that holds a floating-point constant of a given |
| 541 | type. |
| 542 | |
| 543 | This does not need the facilities provided by |
| 544 | tuple_holding_operation, so it does not use it. */ |
| 545 | class float_const_operation |
| 546 | : public operation |
| 547 | { |
| 548 | public: |
| 549 | |
| 550 | float_const_operation (struct type *type, float_data data) |
| 551 | : m_type (type), |
| 552 | m_data (data) |
| 553 | { |
| 554 | } |
| 555 | |
| 556 | value *evaluate (struct type *expect_type, |
| 557 | struct expression *exp, |
| 558 | enum noside noside) override |
| 559 | { |
| 560 | return value_from_contents (m_type, m_data.data ()); |
| 561 | } |
| 562 | |
| 563 | enum exp_opcode opcode () const override |
| 564 | { return OP_FLOAT; } |
| 565 | |
| 566 | bool constant_p () const override |
| 567 | { return true; } |
| 568 | |
| 569 | void dump (struct ui_file *stream, int depth) const override; |
| 570 | |
| 571 | private: |
| 572 | |
| 573 | struct type *m_type; |
| 574 | float_data m_data; |
| 575 | }; |
| 576 | |
| 577 | class scope_operation |
| 578 | : public maybe_constant_operation<struct type *, std::string> |
| 579 | { |
| 580 | public: |
| 581 | |
| 582 | using maybe_constant_operation::maybe_constant_operation; |
| 583 | |
| 584 | value *evaluate (struct type *expect_type, |
| 585 | struct expression *exp, |
| 586 | enum noside noside) override |
| 587 | { |
| 588 | return eval_op_scope (expect_type, exp, noside, |
| 589 | std::get<0> (m_storage), |
| 590 | std::get<1> (m_storage).c_str ()); |
| 591 | } |
| 592 | |
| 593 | value *evaluate_for_address (struct expression *exp, |
| 594 | enum noside noside) override; |
| 595 | |
| 596 | value *evaluate_funcall (struct type *expect_type, |
| 597 | struct expression *exp, |
| 598 | enum noside noside, |
| 599 | const std::vector<operation_up> &args) override; |
| 600 | |
| 601 | enum exp_opcode opcode () const override |
| 602 | { return OP_SCOPE; } |
| 603 | |
| 604 | protected: |
| 605 | |
| 606 | void do_generate_ax (struct expression *exp, |
| 607 | struct agent_expr *ax, |
| 608 | struct axs_value *value, |
| 609 | struct type *cast_type) |
| 610 | override; |
| 611 | }; |
| 612 | |
| 613 | /* Compute the value of a variable. */ |
| 614 | class var_value_operation |
| 615 | : public maybe_constant_operation<symbol *, const block *> |
| 616 | { |
| 617 | public: |
| 618 | |
| 619 | using maybe_constant_operation::maybe_constant_operation; |
| 620 | |
| 621 | value *evaluate (struct type *expect_type, |
| 622 | struct expression *exp, |
| 623 | enum noside noside) override; |
| 624 | |
| 625 | value *evaluate_with_coercion (struct expression *exp, |
| 626 | enum noside noside) override; |
| 627 | |
| 628 | value *evaluate_for_sizeof (struct expression *exp, enum noside noside) |
| 629 | override; |
| 630 | |
| 631 | value *evaluate_for_cast (struct type *expect_type, |
| 632 | struct expression *exp, |
| 633 | enum noside noside) override; |
| 634 | |
| 635 | value *evaluate_for_address (struct expression *exp, enum noside noside) |
| 636 | override; |
| 637 | |
| 638 | value *evaluate_funcall (struct type *expect_type, |
| 639 | struct expression *exp, |
| 640 | enum noside noside, |
| 641 | const std::vector<operation_up> &args) override; |
| 642 | |
| 643 | enum exp_opcode opcode () const override |
| 644 | { return OP_VAR_VALUE; } |
| 645 | |
| 646 | /* Return the symbol referenced by this object. */ |
| 647 | symbol *get_symbol () const |
| 648 | { |
| 649 | return std::get<0> (m_storage); |
| 650 | } |
| 651 | |
| 652 | protected: |
| 653 | |
| 654 | void do_generate_ax (struct expression *exp, |
| 655 | struct agent_expr *ax, |
| 656 | struct axs_value *value, |
| 657 | struct type *cast_type) |
| 658 | override; |
| 659 | }; |
| 660 | |
| 661 | class long_const_operation |
| 662 | : public tuple_holding_operation<struct type *, LONGEST> |
| 663 | { |
| 664 | public: |
| 665 | |
| 666 | using tuple_holding_operation::tuple_holding_operation; |
| 667 | |
| 668 | value *evaluate (struct type *expect_type, |
| 669 | struct expression *exp, |
| 670 | enum noside noside) override |
| 671 | { |
| 672 | return value_from_longest (std::get<0> (m_storage), |
| 673 | std::get<1> (m_storage)); |
| 674 | } |
| 675 | |
| 676 | enum exp_opcode opcode () const override |
| 677 | { return OP_LONG; } |
| 678 | |
| 679 | bool constant_p () const override |
| 680 | { return true; } |
| 681 | |
| 682 | protected: |
| 683 | |
| 684 | void do_generate_ax (struct expression *exp, |
| 685 | struct agent_expr *ax, |
| 686 | struct axs_value *value, |
| 687 | struct type *cast_type) |
| 688 | override; |
| 689 | }; |
| 690 | |
| 691 | class var_msym_value_operation |
| 692 | : public maybe_constant_operation<bound_minimal_symbol> |
| 693 | { |
| 694 | public: |
| 695 | |
| 696 | using maybe_constant_operation::maybe_constant_operation; |
| 697 | |
| 698 | value *evaluate (struct type *expect_type, |
| 699 | struct expression *exp, |
| 700 | enum noside noside) override |
| 701 | { |
| 702 | return eval_op_var_msym_value (expect_type, exp, noside, m_outermost, |
| 703 | std::get<0> (m_storage)); |
| 704 | } |
| 705 | |
| 706 | value *evaluate_for_sizeof (struct expression *exp, enum noside noside) |
| 707 | override; |
| 708 | |
| 709 | value *evaluate_for_address (struct expression *exp, enum noside noside) |
| 710 | override; |
| 711 | |
| 712 | value *evaluate_for_cast (struct type *expect_type, |
| 713 | struct expression *exp, |
| 714 | enum noside noside) override; |
| 715 | |
| 716 | value *evaluate_funcall (struct type *expect_type, |
| 717 | struct expression *exp, |
| 718 | enum noside noside, |
| 719 | const std::vector<operation_up> &args) override |
| 720 | { |
| 721 | const char *name = std::get<0> (m_storage).minsym->print_name (); |
| 722 | return operation::evaluate_funcall (expect_type, exp, noside, name, args); |
| 723 | } |
| 724 | |
| 725 | enum exp_opcode opcode () const override |
| 726 | { return OP_VAR_MSYM_VALUE; } |
| 727 | |
| 728 | void set_outermost () override |
| 729 | { |
| 730 | m_outermost = true; |
| 731 | } |
| 732 | |
| 733 | protected: |
| 734 | |
| 735 | /* True if this is the outermost operation in the expression. */ |
| 736 | bool m_outermost = false; |
| 737 | |
| 738 | void do_generate_ax (struct expression *exp, |
| 739 | struct agent_expr *ax, |
| 740 | struct axs_value *value, |
| 741 | struct type *cast_type) |
| 742 | override; |
| 743 | }; |
| 744 | |
| 745 | class var_entry_value_operation |
| 746 | : public tuple_holding_operation<symbol *> |
| 747 | { |
| 748 | public: |
| 749 | |
| 750 | using tuple_holding_operation::tuple_holding_operation; |
| 751 | |
| 752 | value *evaluate (struct type *expect_type, |
| 753 | struct expression *exp, |
| 754 | enum noside noside) override |
| 755 | { |
| 756 | return eval_op_var_entry_value (expect_type, exp, noside, |
| 757 | std::get<0> (m_storage)); |
| 758 | } |
| 759 | |
| 760 | enum exp_opcode opcode () const override |
| 761 | { return OP_VAR_ENTRY_VALUE; } |
| 762 | }; |
| 763 | |
| 764 | class func_static_var_operation |
| 765 | : public maybe_constant_operation<operation_up, std::string> |
| 766 | { |
| 767 | public: |
| 768 | |
| 769 | using maybe_constant_operation::maybe_constant_operation; |
| 770 | |
| 771 | value *evaluate (struct type *expect_type, |
| 772 | struct expression *exp, |
| 773 | enum noside noside) override |
| 774 | { |
| 775 | value *func = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); |
| 776 | return eval_op_func_static_var (expect_type, exp, noside, func, |
| 777 | std::get<1> (m_storage).c_str ()); |
| 778 | } |
| 779 | |
| 780 | enum exp_opcode opcode () const override |
| 781 | { return OP_FUNC_STATIC_VAR; } |
| 782 | }; |
| 783 | |
| 784 | class last_operation |
| 785 | : public tuple_holding_operation<int> |
| 786 | { |
| 787 | public: |
| 788 | |
| 789 | using tuple_holding_operation::tuple_holding_operation; |
| 790 | |
| 791 | value *evaluate (struct type *expect_type, |
| 792 | struct expression *exp, |
| 793 | enum noside noside) override |
| 794 | { |
| 795 | return access_value_history (std::get<0> (m_storage)); |
| 796 | } |
| 797 | |
| 798 | enum exp_opcode opcode () const override |
| 799 | { return OP_LAST; } |
| 800 | }; |
| 801 | |
| 802 | class register_operation |
| 803 | : public tuple_holding_operation<std::string> |
| 804 | { |
| 805 | public: |
| 806 | |
| 807 | using tuple_holding_operation::tuple_holding_operation; |
| 808 | |
| 809 | value *evaluate (struct type *expect_type, |
| 810 | struct expression *exp, |
| 811 | enum noside noside) override |
| 812 | { |
| 813 | return eval_op_register (expect_type, exp, noside, |
| 814 | std::get<0> (m_storage).c_str ()); |
| 815 | } |
| 816 | |
| 817 | enum exp_opcode opcode () const override |
| 818 | { return OP_REGISTER; } |
| 819 | |
| 820 | /* Return the name of the register. */ |
| 821 | const char *get_name () const |
| 822 | { |
| 823 | return std::get<0> (m_storage).c_str (); |
| 824 | } |
| 825 | |
| 826 | protected: |
| 827 | |
| 828 | void do_generate_ax (struct expression *exp, |
| 829 | struct agent_expr *ax, |
| 830 | struct axs_value *value, |
| 831 | struct type *cast_type) |
| 832 | override; |
| 833 | }; |
| 834 | |
| 835 | class bool_operation |
| 836 | : public tuple_holding_operation<bool> |
| 837 | { |
| 838 | public: |
| 839 | |
| 840 | using tuple_holding_operation::tuple_holding_operation; |
| 841 | |
| 842 | value *evaluate (struct type *expect_type, |
| 843 | struct expression *exp, |
| 844 | enum noside noside) override |
| 845 | { |
| 846 | struct type *type = language_bool_type (exp->language_defn, exp->gdbarch); |
| 847 | return value_from_longest (type, std::get<0> (m_storage)); |
| 848 | } |
| 849 | |
| 850 | enum exp_opcode opcode () const override |
| 851 | { return OP_BOOL; } |
| 852 | |
| 853 | bool constant_p () const override |
| 854 | { return true; } |
| 855 | }; |
| 856 | |
| 857 | class internalvar_operation |
| 858 | : public tuple_holding_operation<internalvar *> |
| 859 | { |
| 860 | public: |
| 861 | |
| 862 | using tuple_holding_operation::tuple_holding_operation; |
| 863 | |
| 864 | value *evaluate (struct type *expect_type, |
| 865 | struct expression *exp, |
| 866 | enum noside noside) override |
| 867 | { |
| 868 | return value_of_internalvar (exp->gdbarch, |
| 869 | std::get<0> (m_storage)); |
| 870 | } |
| 871 | |
| 872 | internalvar *get_internalvar () const |
| 873 | { |
| 874 | return std::get<0> (m_storage); |
| 875 | } |
| 876 | |
| 877 | enum exp_opcode opcode () const override |
| 878 | { return OP_INTERNALVAR; } |
| 879 | |
| 880 | protected: |
| 881 | |
| 882 | void do_generate_ax (struct expression *exp, |
| 883 | struct agent_expr *ax, |
| 884 | struct axs_value *value, |
| 885 | struct type *cast_type) |
| 886 | override; |
| 887 | }; |
| 888 | |
| 889 | class string_operation |
| 890 | : public tuple_holding_operation<std::string> |
| 891 | { |
| 892 | public: |
| 893 | |
| 894 | using tuple_holding_operation::tuple_holding_operation; |
| 895 | |
| 896 | value *evaluate (struct type *expect_type, |
| 897 | struct expression *exp, |
| 898 | enum noside noside) override |
| 899 | { |
| 900 | const std::string &str = std::get<0> (m_storage); |
| 901 | return eval_op_string (expect_type, exp, noside, |
| 902 | str.size (), str.c_str ()); |
| 903 | } |
| 904 | |
| 905 | enum exp_opcode opcode () const override |
| 906 | { return OP_STRING; } |
| 907 | }; |
| 908 | |
| 909 | class ternop_slice_operation |
| 910 | : public maybe_constant_operation<operation_up, operation_up, operation_up> |
| 911 | { |
| 912 | public: |
| 913 | |
| 914 | using maybe_constant_operation::maybe_constant_operation; |
| 915 | |
| 916 | value *evaluate (struct type *expect_type, |
| 917 | struct expression *exp, |
| 918 | enum noside noside) override |
| 919 | { |
| 920 | struct value *array |
| 921 | = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); |
| 922 | struct value *low |
| 923 | = std::get<1> (m_storage)->evaluate (nullptr, exp, noside); |
| 924 | struct value *upper |
| 925 | = std::get<2> (m_storage)->evaluate (nullptr, exp, noside); |
| 926 | return eval_op_ternop (expect_type, exp, noside, array, low, upper); |
| 927 | } |
| 928 | |
| 929 | enum exp_opcode opcode () const override |
| 930 | { return TERNOP_SLICE; } |
| 931 | }; |
| 932 | |
| 933 | class ternop_cond_operation |
| 934 | : public maybe_constant_operation<operation_up, operation_up, operation_up> |
| 935 | { |
| 936 | public: |
| 937 | |
| 938 | using maybe_constant_operation::maybe_constant_operation; |
| 939 | |
| 940 | value *evaluate (struct type *expect_type, |
| 941 | struct expression *exp, |
| 942 | enum noside noside) override |
| 943 | { |
| 944 | struct value *val |
| 945 | = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); |
| 946 | |
| 947 | if (value_logical_not (val)) |
| 948 | return std::get<2> (m_storage)->evaluate (nullptr, exp, noside); |
| 949 | return std::get<1> (m_storage)->evaluate (nullptr, exp, noside); |
| 950 | } |
| 951 | |
| 952 | enum exp_opcode opcode () const override |
| 953 | { return TERNOP_COND; } |
| 954 | |
| 955 | protected: |
| 956 | |
| 957 | void do_generate_ax (struct expression *exp, |
| 958 | struct agent_expr *ax, |
| 959 | struct axs_value *value, |
| 960 | struct type *cast_type) |
| 961 | override; |
| 962 | }; |
| 963 | |
| 964 | class complex_operation |
| 965 | : public maybe_constant_operation<operation_up, operation_up, struct type *> |
| 966 | { |
| 967 | public: |
| 968 | |
| 969 | using maybe_constant_operation::maybe_constant_operation; |
| 970 | |
| 971 | value *evaluate (struct type *expect_type, |
| 972 | struct expression *exp, |
| 973 | enum noside noside) override |
| 974 | { |
| 975 | value *real = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); |
| 976 | value *imag = std::get<1> (m_storage)->evaluate (nullptr, exp, noside); |
| 977 | return value_literal_complex (real, imag, |
| 978 | std::get<2> (m_storage)); |
| 979 | } |
| 980 | |
| 981 | enum exp_opcode opcode () const override |
| 982 | { return OP_COMPLEX; } |
| 983 | }; |
| 984 | |
| 985 | class structop_base_operation |
| 986 | : public tuple_holding_operation<operation_up, std::string> |
| 987 | { |
| 988 | public: |
| 989 | |
| 990 | /* Used for completion. Return the field name. */ |
| 991 | const std::string &get_string () const |
| 992 | { |
| 993 | return std::get<1> (m_storage); |
| 994 | } |
| 995 | |
| 996 | /* Used for completion. Evaluate the LHS for type. */ |
| 997 | value *evaluate_lhs (struct expression *exp) |
| 998 | { |
| 999 | return std::get<0> (m_storage)->evaluate (nullptr, exp, |
| 1000 | EVAL_AVOID_SIDE_EFFECTS); |
| 1001 | } |
| 1002 | |
| 1003 | value *evaluate_funcall (struct type *expect_type, |
| 1004 | struct expression *exp, |
| 1005 | enum noside noside, |
| 1006 | const std::vector<operation_up> &args) override; |
| 1007 | |
| 1008 | protected: |
| 1009 | |
| 1010 | using tuple_holding_operation::tuple_holding_operation; |
| 1011 | }; |
| 1012 | |
| 1013 | class structop_operation |
| 1014 | : public structop_base_operation |
| 1015 | { |
| 1016 | public: |
| 1017 | |
| 1018 | using structop_base_operation::structop_base_operation; |
| 1019 | |
| 1020 | value *evaluate (struct type *expect_type, |
| 1021 | struct expression *exp, |
| 1022 | enum noside noside) override |
| 1023 | { |
| 1024 | value *val =std::get<0> (m_storage)->evaluate (nullptr, exp, noside); |
| 1025 | return eval_op_structop_struct (expect_type, exp, noside, val, |
| 1026 | std::get<1> (m_storage).c_str ()); |
| 1027 | } |
| 1028 | |
| 1029 | enum exp_opcode opcode () const override |
| 1030 | { return STRUCTOP_STRUCT; } |
| 1031 | |
| 1032 | protected: |
| 1033 | |
| 1034 | void do_generate_ax (struct expression *exp, |
| 1035 | struct agent_expr *ax, |
| 1036 | struct axs_value *value, |
| 1037 | struct type *cast_type) |
| 1038 | override |
| 1039 | { |
| 1040 | gen_expr_structop (exp, STRUCTOP_STRUCT, |
| 1041 | std::get<0> (this->m_storage).get (), |
| 1042 | std::get<1> (this->m_storage).c_str (), |
| 1043 | ax, value); |
| 1044 | } |
| 1045 | }; |
| 1046 | |
| 1047 | class structop_ptr_operation |
| 1048 | : public structop_base_operation |
| 1049 | { |
| 1050 | public: |
| 1051 | |
| 1052 | using structop_base_operation::structop_base_operation; |
| 1053 | |
| 1054 | value *evaluate (struct type *expect_type, |
| 1055 | struct expression *exp, |
| 1056 | enum noside noside) override |
| 1057 | { |
| 1058 | value *val = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); |
| 1059 | return eval_op_structop_ptr (expect_type, exp, noside, val, |
| 1060 | std::get<1> (m_storage).c_str ()); |
| 1061 | } |
| 1062 | |
| 1063 | enum exp_opcode opcode () const override |
| 1064 | { return STRUCTOP_PTR; } |
| 1065 | |
| 1066 | protected: |
| 1067 | |
| 1068 | void do_generate_ax (struct expression *exp, |
| 1069 | struct agent_expr *ax, |
| 1070 | struct axs_value *value, |
| 1071 | struct type *cast_type) |
| 1072 | override |
| 1073 | { |
| 1074 | gen_expr_structop (exp, STRUCTOP_PTR, |
| 1075 | std::get<0> (this->m_storage).get (), |
| 1076 | std::get<1> (this->m_storage).c_str (), |
| 1077 | ax, value); |
| 1078 | } |
| 1079 | }; |
| 1080 | |
| 1081 | class structop_member_base |
| 1082 | : public tuple_holding_operation<operation_up, operation_up> |
| 1083 | { |
| 1084 | public: |
| 1085 | |
| 1086 | using tuple_holding_operation::tuple_holding_operation; |
| 1087 | |
| 1088 | value *evaluate_funcall (struct type *expect_type, |
| 1089 | struct expression *exp, |
| 1090 | enum noside noside, |
| 1091 | const std::vector<operation_up> &args) override; |
| 1092 | }; |
| 1093 | |
| 1094 | class structop_member_operation |
| 1095 | : public structop_member_base |
| 1096 | { |
| 1097 | public: |
| 1098 | |
| 1099 | using structop_member_base::structop_member_base; |
| 1100 | |
| 1101 | value *evaluate (struct type *expect_type, |
| 1102 | struct expression *exp, |
| 1103 | enum noside noside) override |
| 1104 | { |
| 1105 | value *lhs |
| 1106 | = std::get<0> (m_storage)->evaluate_for_address (exp, noside); |
| 1107 | value *rhs |
| 1108 | = std::get<1> (m_storage)->evaluate (nullptr, exp, noside); |
| 1109 | return eval_op_member (expect_type, exp, noside, lhs, rhs); |
| 1110 | } |
| 1111 | |
| 1112 | enum exp_opcode opcode () const override |
| 1113 | { return STRUCTOP_MEMBER; } |
| 1114 | }; |
| 1115 | |
| 1116 | class structop_mptr_operation |
| 1117 | : public structop_member_base |
| 1118 | { |
| 1119 | public: |
| 1120 | |
| 1121 | using structop_member_base::structop_member_base; |
| 1122 | |
| 1123 | value *evaluate (struct type *expect_type, |
| 1124 | struct expression *exp, |
| 1125 | enum noside noside) override |
| 1126 | { |
| 1127 | value *lhs |
| 1128 | = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); |
| 1129 | value *rhs |
| 1130 | = std::get<1> (m_storage)->evaluate (nullptr, exp, noside); |
| 1131 | return eval_op_member (expect_type, exp, noside, lhs, rhs); |
| 1132 | } |
| 1133 | |
| 1134 | enum exp_opcode opcode () const override |
| 1135 | { return STRUCTOP_MPTR; } |
| 1136 | }; |
| 1137 | |
| 1138 | class concat_operation |
| 1139 | : public maybe_constant_operation<operation_up, operation_up> |
| 1140 | { |
| 1141 | public: |
| 1142 | |
| 1143 | using maybe_constant_operation::maybe_constant_operation; |
| 1144 | |
| 1145 | value *evaluate (struct type *expect_type, |
| 1146 | struct expression *exp, |
| 1147 | enum noside noside) override |
| 1148 | { |
| 1149 | value *lhs |
| 1150 | = std::get<0> (m_storage)->evaluate_with_coercion (exp, noside); |
| 1151 | value *rhs |
| 1152 | = std::get<1> (m_storage)->evaluate_with_coercion (exp, noside); |
| 1153 | return eval_op_concat (expect_type, exp, noside, lhs, rhs); |
| 1154 | } |
| 1155 | |
| 1156 | enum exp_opcode opcode () const override |
| 1157 | { return BINOP_CONCAT; } |
| 1158 | }; |
| 1159 | |
| 1160 | class add_operation |
| 1161 | : public maybe_constant_operation<operation_up, operation_up> |
| 1162 | { |
| 1163 | public: |
| 1164 | |
| 1165 | using maybe_constant_operation::maybe_constant_operation; |
| 1166 | |
| 1167 | value *evaluate (struct type *expect_type, |
| 1168 | struct expression *exp, |
| 1169 | enum noside noside) override |
| 1170 | { |
| 1171 | value *lhs |
| 1172 | = std::get<0> (m_storage)->evaluate_with_coercion (exp, noside); |
| 1173 | value *rhs |
| 1174 | = std::get<1> (m_storage)->evaluate_with_coercion (exp, noside); |
| 1175 | return eval_op_add (expect_type, exp, noside, lhs, rhs); |
| 1176 | } |
| 1177 | |
| 1178 | enum exp_opcode opcode () const override |
| 1179 | { return BINOP_ADD; } |
| 1180 | |
| 1181 | protected: |
| 1182 | |
| 1183 | void do_generate_ax (struct expression *exp, |
| 1184 | struct agent_expr *ax, |
| 1185 | struct axs_value *value, |
| 1186 | struct type *cast_type) |
| 1187 | override |
| 1188 | { |
| 1189 | gen_expr_binop (exp, BINOP_ADD, |
| 1190 | std::get<0> (this->m_storage).get (), |
| 1191 | std::get<1> (this->m_storage).get (), |
| 1192 | ax, value); |
| 1193 | } |
| 1194 | }; |
| 1195 | |
| 1196 | class sub_operation |
| 1197 | : public maybe_constant_operation<operation_up, operation_up> |
| 1198 | { |
| 1199 | public: |
| 1200 | |
| 1201 | using maybe_constant_operation::maybe_constant_operation; |
| 1202 | |
| 1203 | value *evaluate (struct type *expect_type, |
| 1204 | struct expression *exp, |
| 1205 | enum noside noside) override |
| 1206 | { |
| 1207 | value *lhs |
| 1208 | = std::get<0> (m_storage)->evaluate_with_coercion (exp, noside); |
| 1209 | value *rhs |
| 1210 | = std::get<1> (m_storage)->evaluate_with_coercion (exp, noside); |
| 1211 | return eval_op_sub (expect_type, exp, noside, lhs, rhs); |
| 1212 | } |
| 1213 | |
| 1214 | enum exp_opcode opcode () const override |
| 1215 | { return BINOP_SUB; } |
| 1216 | |
| 1217 | protected: |
| 1218 | |
| 1219 | void do_generate_ax (struct expression *exp, |
| 1220 | struct agent_expr *ax, |
| 1221 | struct axs_value *value, |
| 1222 | struct type *cast_type) |
| 1223 | override |
| 1224 | { |
| 1225 | gen_expr_binop (exp, BINOP_SUB, |
| 1226 | std::get<0> (this->m_storage).get (), |
| 1227 | std::get<1> (this->m_storage).get (), |
| 1228 | ax, value); |
| 1229 | } |
| 1230 | }; |
| 1231 | |
| 1232 | typedef struct value *binary_ftype (struct type *expect_type, |
| 1233 | struct expression *exp, |
| 1234 | enum noside noside, enum exp_opcode op, |
| 1235 | struct value *arg1, struct value *arg2); |
| 1236 | |
| 1237 | template<enum exp_opcode OP, binary_ftype FUNC> |
| 1238 | class binop_operation |
| 1239 | : public maybe_constant_operation<operation_up, operation_up> |
| 1240 | { |
| 1241 | public: |
| 1242 | |
| 1243 | using maybe_constant_operation::maybe_constant_operation; |
| 1244 | |
| 1245 | value *evaluate (struct type *expect_type, |
| 1246 | struct expression *exp, |
| 1247 | enum noside noside) override |
| 1248 | { |
| 1249 | value *lhs |
| 1250 | = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); |
| 1251 | value *rhs |
| 1252 | = std::get<1> (m_storage)->evaluate (nullptr, exp, noside); |
| 1253 | return FUNC (expect_type, exp, noside, OP, lhs, rhs); |
| 1254 | } |
| 1255 | |
| 1256 | enum exp_opcode opcode () const override |
| 1257 | { return OP; } |
| 1258 | }; |
| 1259 | |
| 1260 | template<enum exp_opcode OP, binary_ftype FUNC> |
| 1261 | class usual_ax_binop_operation |
| 1262 | : public binop_operation<OP, FUNC> |
| 1263 | { |
| 1264 | public: |
| 1265 | |
| 1266 | using binop_operation<OP, FUNC>::binop_operation; |
| 1267 | |
| 1268 | protected: |
| 1269 | |
| 1270 | void do_generate_ax (struct expression *exp, |
| 1271 | struct agent_expr *ax, |
| 1272 | struct axs_value *value, |
| 1273 | struct type *cast_type) |
| 1274 | override |
| 1275 | { |
| 1276 | gen_expr_binop (exp, OP, |
| 1277 | std::get<0> (this->m_storage).get (), |
| 1278 | std::get<1> (this->m_storage).get (), |
| 1279 | ax, value); |
| 1280 | } |
| 1281 | }; |
| 1282 | |
| 1283 | using exp_operation = binop_operation<BINOP_EXP, eval_op_binary>; |
| 1284 | using intdiv_operation = binop_operation<BINOP_INTDIV, eval_op_binary>; |
| 1285 | using mod_operation = binop_operation<BINOP_MOD, eval_op_binary>; |
| 1286 | |
| 1287 | using mul_operation = usual_ax_binop_operation<BINOP_MUL, eval_op_binary>; |
| 1288 | using div_operation = usual_ax_binop_operation<BINOP_DIV, eval_op_binary>; |
| 1289 | using rem_operation = usual_ax_binop_operation<BINOP_REM, eval_op_binary>; |
| 1290 | using lsh_operation = usual_ax_binop_operation<BINOP_LSH, eval_op_binary>; |
| 1291 | using rsh_operation = usual_ax_binop_operation<BINOP_RSH, eval_op_binary>; |
| 1292 | using bitwise_and_operation |
| 1293 | = usual_ax_binop_operation<BINOP_BITWISE_AND, eval_op_binary>; |
| 1294 | using bitwise_ior_operation |
| 1295 | = usual_ax_binop_operation<BINOP_BITWISE_IOR, eval_op_binary>; |
| 1296 | using bitwise_xor_operation |
| 1297 | = usual_ax_binop_operation<BINOP_BITWISE_XOR, eval_op_binary>; |
| 1298 | |
| 1299 | class subscript_operation |
| 1300 | : public usual_ax_binop_operation<BINOP_SUBSCRIPT, eval_op_subscript> |
| 1301 | { |
| 1302 | public: |
| 1303 | using usual_ax_binop_operation<BINOP_SUBSCRIPT, |
| 1304 | eval_op_subscript>::usual_ax_binop_operation; |
| 1305 | |
| 1306 | value *evaluate_for_sizeof (struct expression *exp, |
| 1307 | enum noside noside) override; |
| 1308 | }; |
| 1309 | |
| 1310 | /* Implementation of comparison operations. */ |
| 1311 | template<enum exp_opcode OP, binary_ftype FUNC> |
| 1312 | class comparison_operation |
| 1313 | : public usual_ax_binop_operation<OP, FUNC> |
| 1314 | { |
| 1315 | public: |
| 1316 | |
| 1317 | using usual_ax_binop_operation<OP, FUNC>::usual_ax_binop_operation; |
| 1318 | |
| 1319 | value *evaluate (struct type *expect_type, |
| 1320 | struct expression *exp, |
| 1321 | enum noside noside) override |
| 1322 | { |
| 1323 | value *lhs |
| 1324 | = std::get<0> (this->m_storage)->evaluate (nullptr, exp, noside); |
| 1325 | value *rhs |
| 1326 | = std::get<1> (this->m_storage)->evaluate (value_type (lhs), exp, |
| 1327 | noside); |
| 1328 | return FUNC (expect_type, exp, noside, OP, lhs, rhs); |
| 1329 | } |
| 1330 | }; |
| 1331 | |
| 1332 | class equal_operation |
| 1333 | : public comparison_operation<BINOP_EQUAL, eval_op_equal> |
| 1334 | { |
| 1335 | public: |
| 1336 | |
| 1337 | using comparison_operation::comparison_operation; |
| 1338 | |
| 1339 | operation *get_lhs () const |
| 1340 | { |
| 1341 | return std::get<0> (m_storage).get (); |
| 1342 | } |
| 1343 | |
| 1344 | operation *get_rhs () const |
| 1345 | { |
| 1346 | return std::get<1> (m_storage).get (); |
| 1347 | } |
| 1348 | }; |
| 1349 | |
| 1350 | using notequal_operation |
| 1351 | = comparison_operation<BINOP_NOTEQUAL, eval_op_notequal>; |
| 1352 | using less_operation = comparison_operation<BINOP_LESS, eval_op_less>; |
| 1353 | using gtr_operation = comparison_operation<BINOP_GTR, eval_op_gtr>; |
| 1354 | using geq_operation = comparison_operation<BINOP_GEQ, eval_op_geq>; |
| 1355 | using leq_operation = comparison_operation<BINOP_LEQ, eval_op_leq>; |
| 1356 | |
| 1357 | /* Implement the GDB '@' repeat operator. */ |
| 1358 | class repeat_operation |
| 1359 | : public binop_operation<BINOP_REPEAT, eval_op_repeat> |
| 1360 | { |
| 1361 | using binop_operation<BINOP_REPEAT, eval_op_repeat>::binop_operation; |
| 1362 | |
| 1363 | protected: |
| 1364 | |
| 1365 | void do_generate_ax (struct expression *exp, |
| 1366 | struct agent_expr *ax, |
| 1367 | struct axs_value *value, |
| 1368 | struct type *cast_type) |
| 1369 | override; |
| 1370 | }; |
| 1371 | |
| 1372 | /* C-style comma operator. */ |
| 1373 | class comma_operation |
| 1374 | : public maybe_constant_operation<operation_up, operation_up> |
| 1375 | { |
| 1376 | public: |
| 1377 | |
| 1378 | using maybe_constant_operation::maybe_constant_operation; |
| 1379 | |
| 1380 | value *evaluate (struct type *expect_type, |
| 1381 | struct expression *exp, |
| 1382 | enum noside noside) override |
| 1383 | { |
| 1384 | /* The left-hand-side is only evaluated for side effects, so don't |
| 1385 | bother in other modes. */ |
| 1386 | if (noside == EVAL_NORMAL) |
| 1387 | std::get<0> (m_storage)->evaluate (nullptr, exp, noside); |
| 1388 | return std::get<1> (m_storage)->evaluate (nullptr, exp, noside); |
| 1389 | } |
| 1390 | |
| 1391 | enum exp_opcode opcode () const override |
| 1392 | { return BINOP_COMMA; } |
| 1393 | |
| 1394 | protected: |
| 1395 | |
| 1396 | void do_generate_ax (struct expression *exp, |
| 1397 | struct agent_expr *ax, |
| 1398 | struct axs_value *value, |
| 1399 | struct type *cast_type) |
| 1400 | override; |
| 1401 | }; |
| 1402 | |
| 1403 | typedef struct value *unary_ftype (struct type *expect_type, |
| 1404 | struct expression *exp, |
| 1405 | enum noside noside, enum exp_opcode op, |
| 1406 | struct value *arg1); |
| 1407 | |
| 1408 | /* Base class for unary operations. */ |
| 1409 | template<enum exp_opcode OP, unary_ftype FUNC> |
| 1410 | class unop_operation |
| 1411 | : public maybe_constant_operation<operation_up> |
| 1412 | { |
| 1413 | public: |
| 1414 | |
| 1415 | using maybe_constant_operation::maybe_constant_operation; |
| 1416 | |
| 1417 | value *evaluate (struct type *expect_type, |
| 1418 | struct expression *exp, |
| 1419 | enum noside noside) override |
| 1420 | { |
| 1421 | value *val = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); |
| 1422 | return FUNC (expect_type, exp, noside, OP, val); |
| 1423 | } |
| 1424 | |
| 1425 | enum exp_opcode opcode () const override |
| 1426 | { return OP; } |
| 1427 | }; |
| 1428 | |
| 1429 | /* Unary operations that can also be turned into agent expressions in |
| 1430 | the "usual" way. */ |
| 1431 | template<enum exp_opcode OP, unary_ftype FUNC> |
| 1432 | class usual_ax_unop_operation |
| 1433 | : public unop_operation<OP, FUNC> |
| 1434 | { |
| 1435 | using unop_operation<OP, FUNC>::unop_operation; |
| 1436 | |
| 1437 | protected: |
| 1438 | |
| 1439 | void do_generate_ax (struct expression *exp, |
| 1440 | struct agent_expr *ax, |
| 1441 | struct axs_value *value, |
| 1442 | struct type *cast_type) |
| 1443 | override |
| 1444 | { |
| 1445 | gen_expr_unop (exp, OP, |
| 1446 | std::get<0> (this->m_storage).get (), |
| 1447 | ax, value); |
| 1448 | } |
| 1449 | }; |
| 1450 | |
| 1451 | using unary_plus_operation = usual_ax_unop_operation<UNOP_PLUS, eval_op_plus>; |
| 1452 | using unary_neg_operation = usual_ax_unop_operation<UNOP_NEG, eval_op_neg>; |
| 1453 | using unary_complement_operation |
| 1454 | = usual_ax_unop_operation<UNOP_COMPLEMENT, eval_op_complement>; |
| 1455 | using unary_logical_not_operation |
| 1456 | = usual_ax_unop_operation<UNOP_LOGICAL_NOT, eval_op_lognot>; |
| 1457 | |
| 1458 | /* Handle pre- and post- increment and -decrement. */ |
| 1459 | template<enum exp_opcode OP, unary_ftype FUNC> |
| 1460 | class unop_incr_operation |
| 1461 | : public tuple_holding_operation<operation_up> |
| 1462 | { |
| 1463 | public: |
| 1464 | |
| 1465 | using tuple_holding_operation::tuple_holding_operation; |
| 1466 | |
| 1467 | value *evaluate (struct type *expect_type, |
| 1468 | struct expression *exp, |
| 1469 | enum noside noside) override |
| 1470 | { |
| 1471 | value *val = std::get<0> (m_storage)->evaluate (expect_type, exp, noside); |
| 1472 | return FUNC (expect_type, exp, noside, OP, val); |
| 1473 | } |
| 1474 | |
| 1475 | enum exp_opcode opcode () const override |
| 1476 | { return OP; } |
| 1477 | }; |
| 1478 | |
| 1479 | using preinc_operation |
| 1480 | = unop_incr_operation<UNOP_PREINCREMENT, eval_op_preinc>; |
| 1481 | using predec_operation |
| 1482 | = unop_incr_operation<UNOP_PREDECREMENT, eval_op_predec>; |
| 1483 | using postinc_operation |
| 1484 | = unop_incr_operation<UNOP_POSTINCREMENT, eval_op_postinc>; |
| 1485 | using postdec_operation |
| 1486 | = unop_incr_operation<UNOP_POSTDECREMENT, eval_op_postdec>; |
| 1487 | |
| 1488 | /* Base class for implementations of UNOP_IND. */ |
| 1489 | class unop_ind_base_operation |
| 1490 | : public tuple_holding_operation<operation_up> |
| 1491 | { |
| 1492 | public: |
| 1493 | |
| 1494 | using tuple_holding_operation::tuple_holding_operation; |
| 1495 | |
| 1496 | value *evaluate (struct type *expect_type, |
| 1497 | struct expression *exp, |
| 1498 | enum noside noside) override |
| 1499 | { |
| 1500 | if (expect_type != nullptr && expect_type->code () == TYPE_CODE_PTR) |
| 1501 | expect_type = TYPE_TARGET_TYPE (check_typedef (expect_type)); |
| 1502 | value *val = std::get<0> (m_storage)->evaluate (expect_type, exp, noside); |
| 1503 | return eval_op_ind (expect_type, exp, noside, val); |
| 1504 | } |
| 1505 | |
| 1506 | value *evaluate_for_address (struct expression *exp, |
| 1507 | enum noside noside) override; |
| 1508 | |
| 1509 | value *evaluate_for_sizeof (struct expression *exp, |
| 1510 | enum noside noside) override; |
| 1511 | |
| 1512 | enum exp_opcode opcode () const override |
| 1513 | { return UNOP_IND; } |
| 1514 | }; |
| 1515 | |
| 1516 | /* Ordinary UNOP_IND implementation. */ |
| 1517 | class unop_ind_operation |
| 1518 | : public unop_ind_base_operation |
| 1519 | { |
| 1520 | public: |
| 1521 | |
| 1522 | using unop_ind_base_operation::unop_ind_base_operation; |
| 1523 | |
| 1524 | protected: |
| 1525 | |
| 1526 | void do_generate_ax (struct expression *exp, |
| 1527 | struct agent_expr *ax, |
| 1528 | struct axs_value *value, |
| 1529 | struct type *cast_type) |
| 1530 | override |
| 1531 | { |
| 1532 | gen_expr_unop (exp, UNOP_IND, |
| 1533 | std::get<0> (this->m_storage).get (), |
| 1534 | ax, value); |
| 1535 | } |
| 1536 | }; |
| 1537 | |
| 1538 | /* Implement OP_TYPE. */ |
| 1539 | class type_operation |
| 1540 | : public tuple_holding_operation<struct type *> |
| 1541 | { |
| 1542 | public: |
| 1543 | |
| 1544 | using tuple_holding_operation::tuple_holding_operation; |
| 1545 | |
| 1546 | value *evaluate (struct type *expect_type, |
| 1547 | struct expression *exp, |
| 1548 | enum noside noside) override |
| 1549 | { |
| 1550 | return eval_op_type (expect_type, exp, noside, std::get<0> (m_storage)); |
| 1551 | } |
| 1552 | |
| 1553 | enum exp_opcode opcode () const override |
| 1554 | { return OP_TYPE; } |
| 1555 | |
| 1556 | bool constant_p () const override |
| 1557 | { return true; } |
| 1558 | }; |
| 1559 | |
| 1560 | /* Implement the "typeof" operation. */ |
| 1561 | class typeof_operation |
| 1562 | : public maybe_constant_operation<operation_up> |
| 1563 | { |
| 1564 | public: |
| 1565 | |
| 1566 | using maybe_constant_operation::maybe_constant_operation; |
| 1567 | |
| 1568 | value *evaluate (struct type *expect_type, |
| 1569 | struct expression *exp, |
| 1570 | enum noside noside) override |
| 1571 | { |
| 1572 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
| 1573 | return std::get<0> (m_storage)->evaluate (nullptr, exp, |
| 1574 | EVAL_AVOID_SIDE_EFFECTS); |
| 1575 | else |
| 1576 | error (_("Attempt to use a type as an expression")); |
| 1577 | } |
| 1578 | |
| 1579 | enum exp_opcode opcode () const override |
| 1580 | { return OP_TYPEOF; } |
| 1581 | }; |
| 1582 | |
| 1583 | /* Implement 'decltype'. */ |
| 1584 | class decltype_operation |
| 1585 | : public maybe_constant_operation<operation_up> |
| 1586 | { |
| 1587 | public: |
| 1588 | |
| 1589 | using maybe_constant_operation::maybe_constant_operation; |
| 1590 | |
| 1591 | value *evaluate (struct type *expect_type, |
| 1592 | struct expression *exp, |
| 1593 | enum noside noside) override |
| 1594 | { |
| 1595 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
| 1596 | { |
| 1597 | value *result |
| 1598 | = std::get<0> (m_storage)->evaluate (nullptr, exp, |
| 1599 | EVAL_AVOID_SIDE_EFFECTS); |
| 1600 | enum exp_opcode sub_op = std::get<0> (m_storage)->opcode (); |
| 1601 | if (sub_op == BINOP_SUBSCRIPT |
| 1602 | || sub_op == STRUCTOP_MEMBER |
| 1603 | || sub_op == STRUCTOP_MPTR |
| 1604 | || sub_op == UNOP_IND |
| 1605 | || sub_op == STRUCTOP_STRUCT |
| 1606 | || sub_op == STRUCTOP_PTR |
| 1607 | || sub_op == OP_SCOPE) |
| 1608 | { |
| 1609 | struct type *type = value_type (result); |
| 1610 | |
| 1611 | if (!TYPE_IS_REFERENCE (type)) |
| 1612 | { |
| 1613 | type = lookup_lvalue_reference_type (type); |
| 1614 | result = allocate_value (type); |
| 1615 | } |
| 1616 | } |
| 1617 | |
| 1618 | return result; |
| 1619 | } |
| 1620 | else |
| 1621 | error (_("Attempt to use a type as an expression")); |
| 1622 | } |
| 1623 | |
| 1624 | enum exp_opcode opcode () const override |
| 1625 | { return OP_DECLTYPE; } |
| 1626 | }; |
| 1627 | |
| 1628 | /* Implement 'typeid'. */ |
| 1629 | class typeid_operation |
| 1630 | : public tuple_holding_operation<operation_up> |
| 1631 | { |
| 1632 | public: |
| 1633 | |
| 1634 | using tuple_holding_operation::tuple_holding_operation; |
| 1635 | |
| 1636 | value *evaluate (struct type *expect_type, |
| 1637 | struct expression *exp, |
| 1638 | enum noside noside) override |
| 1639 | { |
| 1640 | enum exp_opcode sub_op = std::get<0> (m_storage)->opcode (); |
| 1641 | enum noside sub_noside |
| 1642 | = ((sub_op == OP_TYPE || sub_op == OP_DECLTYPE || sub_op == OP_TYPEOF) |
| 1643 | ? EVAL_AVOID_SIDE_EFFECTS |
| 1644 | : noside); |
| 1645 | |
| 1646 | value *result = std::get<0> (m_storage)->evaluate (nullptr, exp, |
| 1647 | sub_noside); |
| 1648 | if (noside != EVAL_NORMAL) |
| 1649 | return allocate_value (cplus_typeid_type (exp->gdbarch)); |
| 1650 | return cplus_typeid (result); |
| 1651 | } |
| 1652 | |
| 1653 | enum exp_opcode opcode () const override |
| 1654 | { return OP_TYPEID; } |
| 1655 | }; |
| 1656 | |
| 1657 | /* Implement the address-of operation. */ |
| 1658 | class unop_addr_operation |
| 1659 | : public maybe_constant_operation<operation_up> |
| 1660 | { |
| 1661 | public: |
| 1662 | |
| 1663 | using maybe_constant_operation::maybe_constant_operation; |
| 1664 | |
| 1665 | value *evaluate (struct type *expect_type, |
| 1666 | struct expression *exp, |
| 1667 | enum noside noside) override |
| 1668 | { |
| 1669 | /* C++: check for and handle pointer to members. */ |
| 1670 | return std::get<0> (m_storage)->evaluate_for_address (exp, noside); |
| 1671 | } |
| 1672 | |
| 1673 | enum exp_opcode opcode () const override |
| 1674 | { return UNOP_ADDR; } |
| 1675 | |
| 1676 | /* Return the subexpression. */ |
| 1677 | const operation_up &get_expression () const |
| 1678 | { |
| 1679 | return std::get<0> (m_storage); |
| 1680 | } |
| 1681 | |
| 1682 | protected: |
| 1683 | |
| 1684 | void do_generate_ax (struct expression *exp, |
| 1685 | struct agent_expr *ax, |
| 1686 | struct axs_value *value, |
| 1687 | struct type *cast_type) |
| 1688 | override |
| 1689 | { |
| 1690 | gen_expr_unop (exp, UNOP_ADDR, |
| 1691 | std::get<0> (this->m_storage).get (), |
| 1692 | ax, value); |
| 1693 | } |
| 1694 | }; |
| 1695 | |
| 1696 | /* Implement 'sizeof'. */ |
| 1697 | class unop_sizeof_operation |
| 1698 | : public maybe_constant_operation<operation_up> |
| 1699 | { |
| 1700 | public: |
| 1701 | |
| 1702 | using maybe_constant_operation::maybe_constant_operation; |
| 1703 | |
| 1704 | value *evaluate (struct type *expect_type, |
| 1705 | struct expression *exp, |
| 1706 | enum noside noside) override |
| 1707 | { |
| 1708 | return std::get<0> (m_storage)->evaluate_for_sizeof (exp, noside); |
| 1709 | } |
| 1710 | |
| 1711 | enum exp_opcode opcode () const override |
| 1712 | { return UNOP_SIZEOF; } |
| 1713 | |
| 1714 | protected: |
| 1715 | |
| 1716 | void do_generate_ax (struct expression *exp, |
| 1717 | struct agent_expr *ax, |
| 1718 | struct axs_value *value, |
| 1719 | struct type *cast_type) |
| 1720 | override; |
| 1721 | }; |
| 1722 | |
| 1723 | /* Implement 'alignof'. */ |
| 1724 | class unop_alignof_operation |
| 1725 | : public maybe_constant_operation<operation_up> |
| 1726 | { |
| 1727 | public: |
| 1728 | |
| 1729 | using maybe_constant_operation::maybe_constant_operation; |
| 1730 | |
| 1731 | value *evaluate (struct type *expect_type, |
| 1732 | struct expression *exp, |
| 1733 | enum noside noside) override |
| 1734 | { |
| 1735 | value *val = std::get<0> (m_storage)->evaluate (nullptr, exp, |
| 1736 | EVAL_AVOID_SIDE_EFFECTS); |
| 1737 | return eval_op_alignof (expect_type, exp, noside, val); |
| 1738 | } |
| 1739 | |
| 1740 | enum exp_opcode opcode () const override |
| 1741 | { return UNOP_ALIGNOF; } |
| 1742 | }; |
| 1743 | |
| 1744 | /* Implement UNOP_MEMVAL. */ |
| 1745 | class unop_memval_operation |
| 1746 | : public tuple_holding_operation<operation_up, struct type *> |
| 1747 | { |
| 1748 | public: |
| 1749 | |
| 1750 | using tuple_holding_operation::tuple_holding_operation; |
| 1751 | |
| 1752 | value *evaluate (struct type *expect_type, |
| 1753 | struct expression *exp, |
| 1754 | enum noside noside) override |
| 1755 | { |
| 1756 | value *val = std::get<0> (m_storage)->evaluate (expect_type, exp, noside); |
| 1757 | return eval_op_memval (expect_type, exp, noside, val, |
| 1758 | std::get<1> (m_storage)); |
| 1759 | } |
| 1760 | |
| 1761 | value *evaluate_for_sizeof (struct expression *exp, |
| 1762 | enum noside noside) override; |
| 1763 | |
| 1764 | value *evaluate_for_address (struct expression *exp, |
| 1765 | enum noside noside) override; |
| 1766 | |
| 1767 | enum exp_opcode opcode () const override |
| 1768 | { return UNOP_MEMVAL; } |
| 1769 | |
| 1770 | /* Return the type referenced by this object. */ |
| 1771 | struct type *get_type () const |
| 1772 | { |
| 1773 | return std::get<1> (m_storage); |
| 1774 | } |
| 1775 | |
| 1776 | protected: |
| 1777 | |
| 1778 | void do_generate_ax (struct expression *exp, |
| 1779 | struct agent_expr *ax, |
| 1780 | struct axs_value *value, |
| 1781 | struct type *cast_type) |
| 1782 | override; |
| 1783 | }; |
| 1784 | |
| 1785 | /* Implement UNOP_MEMVAL_TYPE. */ |
| 1786 | class unop_memval_type_operation |
| 1787 | : public tuple_holding_operation<operation_up, operation_up> |
| 1788 | { |
| 1789 | public: |
| 1790 | |
| 1791 | using tuple_holding_operation::tuple_holding_operation; |
| 1792 | |
| 1793 | value *evaluate (struct type *expect_type, |
| 1794 | struct expression *exp, |
| 1795 | enum noside noside) override |
| 1796 | { |
| 1797 | value *typeval |
| 1798 | = std::get<0> (m_storage)->evaluate (expect_type, exp, |
| 1799 | EVAL_AVOID_SIDE_EFFECTS); |
| 1800 | struct type *type = value_type (typeval); |
| 1801 | value *val = std::get<1> (m_storage)->evaluate (expect_type, exp, noside); |
| 1802 | return eval_op_memval (expect_type, exp, noside, val, type); |
| 1803 | } |
| 1804 | |
| 1805 | value *evaluate_for_sizeof (struct expression *exp, |
| 1806 | enum noside noside) override; |
| 1807 | |
| 1808 | value *evaluate_for_address (struct expression *exp, |
| 1809 | enum noside noside) override; |
| 1810 | |
| 1811 | enum exp_opcode opcode () const override |
| 1812 | { return UNOP_MEMVAL_TYPE; } |
| 1813 | |
| 1814 | protected: |
| 1815 | |
| 1816 | void do_generate_ax (struct expression *exp, |
| 1817 | struct agent_expr *ax, |
| 1818 | struct axs_value *value, |
| 1819 | struct type *cast_type) |
| 1820 | override; |
| 1821 | }; |
| 1822 | |
| 1823 | /* Implement the 'this' expression. */ |
| 1824 | class op_this_operation |
| 1825 | : public tuple_holding_operation<> |
| 1826 | { |
| 1827 | public: |
| 1828 | |
| 1829 | using tuple_holding_operation::tuple_holding_operation; |
| 1830 | |
| 1831 | value *evaluate (struct type *expect_type, |
| 1832 | struct expression *exp, |
| 1833 | enum noside noside) override |
| 1834 | { |
| 1835 | return value_of_this (exp->language_defn); |
| 1836 | } |
| 1837 | |
| 1838 | enum exp_opcode opcode () const override |
| 1839 | { return OP_THIS; } |
| 1840 | |
| 1841 | protected: |
| 1842 | |
| 1843 | void do_generate_ax (struct expression *exp, |
| 1844 | struct agent_expr *ax, |
| 1845 | struct axs_value *value, |
| 1846 | struct type *cast_type) |
| 1847 | override; |
| 1848 | }; |
| 1849 | |
| 1850 | /* Implement the "type instance" operation. */ |
| 1851 | class type_instance_operation |
| 1852 | : public tuple_holding_operation<type_instance_flags, std::vector<type *>, |
| 1853 | operation_up> |
| 1854 | { |
| 1855 | public: |
| 1856 | |
| 1857 | using tuple_holding_operation::tuple_holding_operation; |
| 1858 | |
| 1859 | value *evaluate (struct type *expect_type, |
| 1860 | struct expression *exp, |
| 1861 | enum noside noside) override; |
| 1862 | |
| 1863 | enum exp_opcode opcode () const override |
| 1864 | { return TYPE_INSTANCE; } |
| 1865 | }; |
| 1866 | |
| 1867 | /* The assignment operator. */ |
| 1868 | class assign_operation |
| 1869 | : public tuple_holding_operation<operation_up, operation_up> |
| 1870 | { |
| 1871 | public: |
| 1872 | |
| 1873 | using tuple_holding_operation::tuple_holding_operation; |
| 1874 | |
| 1875 | value *evaluate (struct type *expect_type, |
| 1876 | struct expression *exp, |
| 1877 | enum noside noside) override |
| 1878 | { |
| 1879 | value *lhs = std::get<0> (m_storage)->evaluate (nullptr, exp, noside); |
| 1880 | /* Special-case assignments where the left-hand-side is a |
| 1881 | convenience variable -- in these, don't bother setting an |
| 1882 | expected type. This avoids a weird case where re-assigning a |
| 1883 | string or array to an internal variable could error with "Too |
| 1884 | many array elements". */ |
| 1885 | struct type *xtype = (VALUE_LVAL (lhs) == lval_internalvar |
| 1886 | ? nullptr |
| 1887 | : value_type (lhs)); |
| 1888 | value *rhs = std::get<1> (m_storage)->evaluate (xtype, exp, noside); |
| 1889 | |
| 1890 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
| 1891 | return lhs; |
| 1892 | if (binop_user_defined_p (BINOP_ASSIGN, lhs, rhs)) |
| 1893 | return value_x_binop (lhs, rhs, BINOP_ASSIGN, OP_NULL, noside); |
| 1894 | else |
| 1895 | return value_assign (lhs, rhs); |
| 1896 | } |
| 1897 | |
| 1898 | enum exp_opcode opcode () const override |
| 1899 | { return BINOP_ASSIGN; } |
| 1900 | |
| 1901 | /* Return the left-hand-side of the assignment. */ |
| 1902 | operation *get_lhs () const |
| 1903 | { |
| 1904 | return std::get<0> (m_storage).get (); |
| 1905 | } |
| 1906 | |
| 1907 | protected: |
| 1908 | |
| 1909 | void do_generate_ax (struct expression *exp, |
| 1910 | struct agent_expr *ax, |
| 1911 | struct axs_value *value, |
| 1912 | struct type *cast_type) |
| 1913 | override; |
| 1914 | }; |
| 1915 | |
| 1916 | /* Assignment with modification, like "+=". */ |
| 1917 | class assign_modify_operation |
| 1918 | : public tuple_holding_operation<exp_opcode, operation_up, operation_up> |
| 1919 | { |
| 1920 | public: |
| 1921 | |
| 1922 | using tuple_holding_operation::tuple_holding_operation; |
| 1923 | |
| 1924 | value *evaluate (struct type *expect_type, |
| 1925 | struct expression *exp, |
| 1926 | enum noside noside) override |
| 1927 | { |
| 1928 | value *lhs = std::get<1> (m_storage)->evaluate (nullptr, exp, noside); |
| 1929 | value *rhs = std::get<2> (m_storage)->evaluate (expect_type, exp, noside); |
| 1930 | return eval_binop_assign_modify (expect_type, exp, noside, |
| 1931 | std::get<0> (m_storage), lhs, rhs); |
| 1932 | } |
| 1933 | |
| 1934 | enum exp_opcode opcode () const override |
| 1935 | { return BINOP_ASSIGN_MODIFY; } |
| 1936 | |
| 1937 | protected: |
| 1938 | |
| 1939 | void do_generate_ax (struct expression *exp, |
| 1940 | struct agent_expr *ax, |
| 1941 | struct axs_value *value, |
| 1942 | struct type *cast_type) |
| 1943 | override; |
| 1944 | }; |
| 1945 | |
| 1946 | /* A type cast. */ |
| 1947 | class unop_cast_operation |
| 1948 | : public maybe_constant_operation<operation_up, struct type *> |
| 1949 | { |
| 1950 | public: |
| 1951 | |
| 1952 | using maybe_constant_operation::maybe_constant_operation; |
| 1953 | |
| 1954 | value *evaluate (struct type *expect_type, |
| 1955 | struct expression *exp, |
| 1956 | enum noside noside) override |
| 1957 | { |
| 1958 | return std::get<0> (m_storage)->evaluate_for_cast (std::get<1> (m_storage), |
| 1959 | exp, noside); |
| 1960 | } |
| 1961 | |
| 1962 | enum exp_opcode opcode () const override |
| 1963 | { return UNOP_CAST; } |
| 1964 | |
| 1965 | /* Return the type referenced by this object. */ |
| 1966 | struct type *get_type () const |
| 1967 | { |
| 1968 | return std::get<1> (m_storage); |
| 1969 | } |
| 1970 | |
| 1971 | protected: |
| 1972 | |
| 1973 | void do_generate_ax (struct expression *exp, |
| 1974 | struct agent_expr *ax, |
| 1975 | struct axs_value *value, |
| 1976 | struct type *cast_type) |
| 1977 | override; |
| 1978 | }; |
| 1979 | |
| 1980 | /* A cast, but the type comes from an expression, not a "struct |
| 1981 | type". */ |
| 1982 | class unop_cast_type_operation |
| 1983 | : public maybe_constant_operation<operation_up, operation_up> |
| 1984 | { |
| 1985 | public: |
| 1986 | |
| 1987 | using maybe_constant_operation::maybe_constant_operation; |
| 1988 | |
| 1989 | value *evaluate (struct type *expect_type, |
| 1990 | struct expression *exp, |
| 1991 | enum noside noside) override |
| 1992 | { |
| 1993 | value *val = std::get<0> (m_storage)->evaluate (nullptr, exp, |
| 1994 | EVAL_AVOID_SIDE_EFFECTS); |
| 1995 | return std::get<1> (m_storage)->evaluate_for_cast (value_type (val), |
| 1996 | exp, noside); |
| 1997 | } |
| 1998 | |
| 1999 | enum exp_opcode opcode () const override |
| 2000 | { return UNOP_CAST_TYPE; } |
| 2001 | |
| 2002 | protected: |
| 2003 | |
| 2004 | void do_generate_ax (struct expression *exp, |
| 2005 | struct agent_expr *ax, |
| 2006 | struct axs_value *value, |
| 2007 | struct type *cast_type) |
| 2008 | override; |
| 2009 | }; |
| 2010 | |
| 2011 | typedef value *cxx_cast_ftype (struct type *, value *); |
| 2012 | |
| 2013 | /* This implements dynamic_cast and reinterpret_cast. static_cast and |
| 2014 | const_cast are handled by the ordinary case operations. */ |
| 2015 | template<exp_opcode OP, cxx_cast_ftype FUNC> |
| 2016 | class cxx_cast_operation |
| 2017 | : public maybe_constant_operation<operation_up, operation_up> |
| 2018 | { |
| 2019 | public: |
| 2020 | |
| 2021 | using maybe_constant_operation::maybe_constant_operation; |
| 2022 | |
| 2023 | value *evaluate (struct type *expect_type, |
| 2024 | struct expression *exp, |
| 2025 | enum noside noside) override |
| 2026 | { |
| 2027 | value *val = std::get<0> (m_storage)->evaluate (nullptr, exp, |
| 2028 | EVAL_AVOID_SIDE_EFFECTS); |
| 2029 | struct type *type = value_type (val); |
| 2030 | value *rhs = std::get<1> (m_storage)->evaluate (type, exp, noside); |
| 2031 | return FUNC (type, rhs); |
| 2032 | } |
| 2033 | |
| 2034 | enum exp_opcode opcode () const override |
| 2035 | { return OP; } |
| 2036 | }; |
| 2037 | |
| 2038 | using dynamic_cast_operation = cxx_cast_operation<UNOP_DYNAMIC_CAST, |
| 2039 | value_dynamic_cast>; |
| 2040 | using reinterpret_cast_operation = cxx_cast_operation<UNOP_REINTERPRET_CAST, |
| 2041 | value_reinterpret_cast>; |
| 2042 | |
| 2043 | /* Multi-dimensional subscripting. */ |
| 2044 | class multi_subscript_operation |
| 2045 | : public tuple_holding_operation<operation_up, std::vector<operation_up>> |
| 2046 | { |
| 2047 | public: |
| 2048 | |
| 2049 | using tuple_holding_operation::tuple_holding_operation; |
| 2050 | |
| 2051 | value *evaluate (struct type *expect_type, |
| 2052 | struct expression *exp, |
| 2053 | enum noside noside) override; |
| 2054 | |
| 2055 | enum exp_opcode opcode () const override |
| 2056 | { return MULTI_SUBSCRIPT; } |
| 2057 | }; |
| 2058 | |
| 2059 | /* The "&&" operator. */ |
| 2060 | class logical_and_operation |
| 2061 | : public maybe_constant_operation<operation_up, operation_up> |
| 2062 | { |
| 2063 | public: |
| 2064 | |
| 2065 | using maybe_constant_operation::maybe_constant_operation; |
| 2066 | |
| 2067 | value *evaluate (struct type *expect_type, |
| 2068 | struct expression *exp, |
| 2069 | enum noside noside) override; |
| 2070 | |
| 2071 | enum exp_opcode opcode () const override |
| 2072 | { return BINOP_LOGICAL_AND; } |
| 2073 | |
| 2074 | protected: |
| 2075 | |
| 2076 | void do_generate_ax (struct expression *exp, |
| 2077 | struct agent_expr *ax, |
| 2078 | struct axs_value *value, |
| 2079 | struct type *cast_type) |
| 2080 | override; |
| 2081 | }; |
| 2082 | |
| 2083 | /* The "||" operator. */ |
| 2084 | class logical_or_operation |
| 2085 | : public maybe_constant_operation<operation_up, operation_up> |
| 2086 | { |
| 2087 | public: |
| 2088 | |
| 2089 | using maybe_constant_operation::maybe_constant_operation; |
| 2090 | |
| 2091 | value *evaluate (struct type *expect_type, |
| 2092 | struct expression *exp, |
| 2093 | enum noside noside) override; |
| 2094 | |
| 2095 | enum exp_opcode opcode () const override |
| 2096 | { return BINOP_LOGICAL_OR; } |
| 2097 | |
| 2098 | protected: |
| 2099 | |
| 2100 | void do_generate_ax (struct expression *exp, |
| 2101 | struct agent_expr *ax, |
| 2102 | struct axs_value *value, |
| 2103 | struct type *cast_type) |
| 2104 | override; |
| 2105 | }; |
| 2106 | |
| 2107 | /* This class implements ADL (aka Koenig) function calls for C++. It |
| 2108 | holds the name of the function to call, the block in which the |
| 2109 | lookup should be done, and a vector of arguments. */ |
| 2110 | class adl_func_operation |
| 2111 | : public tuple_holding_operation<std::string, const block *, |
| 2112 | std::vector<operation_up>> |
| 2113 | { |
| 2114 | public: |
| 2115 | |
| 2116 | using tuple_holding_operation::tuple_holding_operation; |
| 2117 | |
| 2118 | value *evaluate (struct type *expect_type, |
| 2119 | struct expression *exp, |
| 2120 | enum noside noside) override; |
| 2121 | |
| 2122 | enum exp_opcode opcode () const override |
| 2123 | { return OP_ADL_FUNC; } |
| 2124 | }; |
| 2125 | |
| 2126 | /* The OP_ARRAY operation. */ |
| 2127 | class array_operation |
| 2128 | : public tuple_holding_operation<int, int, std::vector<operation_up>> |
| 2129 | { |
| 2130 | public: |
| 2131 | |
| 2132 | using tuple_holding_operation::tuple_holding_operation; |
| 2133 | |
| 2134 | value *evaluate (struct type *expect_type, |
| 2135 | struct expression *exp, |
| 2136 | enum noside noside) override; |
| 2137 | |
| 2138 | enum exp_opcode opcode () const override |
| 2139 | { return OP_ARRAY; } |
| 2140 | |
| 2141 | private: |
| 2142 | |
| 2143 | struct value *evaluate_struct_tuple (struct value *struct_val, |
| 2144 | struct expression *exp, |
| 2145 | enum noside noside, int nargs); |
| 2146 | }; |
| 2147 | |
| 2148 | /* A function call. This holds the callee operation and the |
| 2149 | arguments. */ |
| 2150 | class funcall_operation |
| 2151 | : public tuple_holding_operation<operation_up, std::vector<operation_up>> |
| 2152 | { |
| 2153 | public: |
| 2154 | |
| 2155 | using tuple_holding_operation::tuple_holding_operation; |
| 2156 | |
| 2157 | value *evaluate (struct type *expect_type, |
| 2158 | struct expression *exp, |
| 2159 | enum noside noside) override |
| 2160 | { |
| 2161 | return std::get<0> (m_storage)->evaluate_funcall (expect_type, exp, noside, |
| 2162 | std::get<1> (m_storage)); |
| 2163 | } |
| 2164 | |
| 2165 | enum exp_opcode opcode () const override |
| 2166 | { return OP_FUNCALL; } |
| 2167 | }; |
| 2168 | |
| 2169 | } /* namespace expr */ |
| 2170 | |
| 2171 | #endif /* EXPOP_H */ |