1 /* Demangler for g++ V3 ABI. 2 Copyright (C) 2003-2017 Free Software Foundation, Inc. 3 Written by Ian Lance Taylor <ian (at) wasabisystems.com>. 4 5 This file is part of the libiberty library, which is part of GCC. 6 7 This file is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 In addition to the permissions in the GNU General Public License, the 13 Free Software Foundation gives you unlimited permission to link the 14 compiled version of this file into combinations with other programs, 15 and to distribute those combinations without any restriction coming 16 from the use of this file. (The General Public License restrictions 17 do apply in other respects; for example, they cover modification of 18 the file, and distribution when not linked into a combined 19 executable.) 20 21 This program is distributed in the hope that it will be useful, 22 but WITHOUT ANY WARRANTY; without even the implied warranty of 23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 24 GNU General Public License for more details. 25 26 You should have received a copy of the GNU General Public License 27 along with this program; if not, write to the Free Software 28 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. 29 */ 30 31 /* This code implements a demangler for the g++ V3 ABI. The ABI is 32 described on this web page: 33 http://www.codesourcery.com/cxx-abi/abi.html#mangling 34 35 This code was written while looking at the demangler written by 36 Alex Samuel <samuel (at) codesourcery.com>. 37 38 This code first pulls the mangled name apart into a list of 39 components, and then walks the list generating the demangled 40 name. 41 42 This file will normally define the following functions, q.v.: 43 char *cplus_demangle_v3(const char *mangled, int options) 44 char *java_demangle_v3(const char *mangled) 45 int cplus_demangle_v3_callback(const char *mangled, int options, 46 demangle_callbackref callback) 47 int java_demangle_v3_callback(const char *mangled, 48 demangle_callbackref callback) 49 enum gnu_v3_ctor_kinds is_gnu_v3_mangled_ctor (const char *name) 50 enum gnu_v3_dtor_kinds is_gnu_v3_mangled_dtor (const char *name) 51 52 Also, the interface to the component list is public, and defined in 53 demangle.h. The interface consists of these types, which are 54 defined in demangle.h: 55 enum demangle_component_type 56 struct demangle_component 57 demangle_callbackref 58 and these functions defined in this file: 59 cplus_demangle_fill_name 60 cplus_demangle_fill_extended_operator 61 cplus_demangle_fill_ctor 62 cplus_demangle_fill_dtor 63 cplus_demangle_print 64 cplus_demangle_print_callback 65 and other functions defined in the file cp-demint.c. 66 67 This file also defines some other functions and variables which are 68 only to be used by the file cp-demint.c. 69 70 Preprocessor macros you can define while compiling this file: 71 72 IN_LIBGCC2 73 If defined, this file defines the following functions, q.v.: 74 char *__cxa_demangle (const char *mangled, char *buf, size_t *len, 75 int *status) 76 int __gcclibcxx_demangle_callback (const char *, 77 void (*) 78 (const char *, size_t, void *), 79 void *) 80 instead of cplus_demangle_v3[_callback]() and 81 java_demangle_v3[_callback](). 82 83 IN_GLIBCPP_V3 84 If defined, this file defines only __cxa_demangle() and 85 __gcclibcxx_demangle_callback(), and no other publically visible 86 functions or variables. 87 88 STANDALONE_DEMANGLER 89 If defined, this file defines a main() function which demangles 90 any arguments, or, if none, demangles stdin. 91 92 CP_DEMANGLE_DEBUG 93 If defined, turns on debugging mode, which prints information on 94 stdout about the mangled string. This is not generally useful. 95 96 CHECK_DEMANGLER 97 If defined, additional sanity checks will be performed. It will 98 cause some slowdown, but will allow to catch out-of-bound access 99 errors earlier. This macro is intended for testing and debugging. */ 100 101 #if 0 /* in valgrind */ 102 #if defined (_AIX) && !defined (__GNUC__) 103 #pragma alloca 104 #endif 105 #endif /* ! in valgrind */ 106 107 #if 0 /* in valgrind */ 108 #ifdef HAVE_CONFIG_H 109 #include "config.h" 110 #endif 111 #endif /* ! in valgrind */ 112 113 #if 0 /* in valgrind */ 114 #include <stdio.h> 115 #endif /* ! in valgrind */ 116 117 #if 0 /* in valgrind */ 118 #ifdef HAVE_STDLIB_H 119 #include <stdlib.h> 120 #endif 121 #ifdef HAVE_STRING_H 122 #include <string.h> 123 #endif 124 #endif /* ! in valgrind */ 125 126 #if 0 /* in valgrind */ 127 #ifdef HAVE_ALLOCA_H 128 # include <alloca.h> 129 #else 130 # ifndef alloca 131 # ifdef __GNUC__ 132 # define alloca __builtin_alloca 133 # else 134 extern char *alloca (); 135 # endif /* __GNUC__ */ 136 # endif /* alloca */ 137 #endif /* HAVE_ALLOCA_H */ 138 #endif /* ! in valgrind */ 139 140 #if 0 /* in valgrind */ 141 #ifdef HAVE_LIMITS_H 142 #include <limits.h> 143 #endif 144 #endif /* ! in valgrind */ 145 #ifndef INT_MAX 146 # define INT_MAX (int)(((unsigned int) ~0) >> 1) /* 0x7FFFFFFF */ 147 #endif 148 149 #if 0 /* in valgrind */ 150 #include "ansidecl.h" 151 #include "libiberty.h" 152 #endif /* ! in valgrind */ 153 154 #include "vg_libciface.h" 155 156 #include "demangle.h" 157 #include "cp-demangle.h" 158 159 /* If IN_GLIBCPP_V3 is defined, some functions are made static. We 160 also rename them via #define to avoid compiler errors when the 161 static definition conflicts with the extern declaration in a header 162 file. */ 163 #ifdef IN_GLIBCPP_V3 164 165 #define CP_STATIC_IF_GLIBCPP_V3 static 166 167 #define cplus_demangle_fill_name d_fill_name 168 static int d_fill_name (struct demangle_component *, const char *, int); 169 170 #define cplus_demangle_fill_extended_operator d_fill_extended_operator 171 static int 172 d_fill_extended_operator (struct demangle_component *, int, 173 struct demangle_component *); 174 175 #define cplus_demangle_fill_ctor d_fill_ctor 176 static int 177 d_fill_ctor (struct demangle_component *, enum gnu_v3_ctor_kinds, 178 struct demangle_component *); 179 180 #define cplus_demangle_fill_dtor d_fill_dtor 181 static int 182 d_fill_dtor (struct demangle_component *, enum gnu_v3_dtor_kinds, 183 struct demangle_component *); 184 185 #define cplus_demangle_mangled_name d_mangled_name 186 static struct demangle_component *d_mangled_name (struct d_info *, int); 187 188 #define cplus_demangle_type d_type 189 static struct demangle_component *d_type (struct d_info *); 190 191 #define cplus_demangle_print d_print 192 static char *d_print (int, struct demangle_component *, int, size_t *); 193 194 #define cplus_demangle_print_callback d_print_callback 195 static int d_print_callback (int, struct demangle_component *, 196 demangle_callbackref, void *); 197 198 #define cplus_demangle_init_info d_init_info 199 static void d_init_info (const char *, int, size_t, struct d_info *); 200 201 #else /* ! defined(IN_GLIBCPP_V3) */ 202 #define CP_STATIC_IF_GLIBCPP_V3 203 #endif /* ! defined(IN_GLIBCPP_V3) */ 204 205 /* See if the compiler supports dynamic arrays. */ 206 207 #ifdef __GNUC__ 208 #define CP_DYNAMIC_ARRAYS 209 #else 210 #ifdef __STDC__ 211 #ifdef __STDC_VERSION__ 212 #if __STDC_VERSION__ >= 199901L 213 #define CP_DYNAMIC_ARRAYS 214 #endif /* __STDC__VERSION >= 199901L */ 215 #endif /* defined (__STDC_VERSION__) */ 216 #endif /* defined (__STDC__) */ 217 #endif /* ! defined (__GNUC__) */ 218 219 /* We avoid pulling in the ctype tables, to prevent pulling in 220 additional unresolved symbols when this code is used in a library. 221 FIXME: Is this really a valid reason? This comes from the original 222 V3 demangler code. 223 224 As of this writing this file has the following undefined references 225 when compiled with -DIN_GLIBCPP_V3: realloc, free, memcpy, strcpy, 226 strcat, strlen. */ 227 228 #define IS_DIGIT(c) ((c) >= '0' && (c) <= '9') 229 #define IS_UPPER(c) ((c) >= 'A' && (c) <= 'Z') 230 #define IS_LOWER(c) ((c) >= 'a' && (c) <= 'z') 231 232 /* The prefix prepended by GCC to an identifier represnting the 233 anonymous namespace. */ 234 #define ANONYMOUS_NAMESPACE_PREFIX "_GLOBAL_" 235 #define ANONYMOUS_NAMESPACE_PREFIX_LEN \ 236 (sizeof (ANONYMOUS_NAMESPACE_PREFIX) - 1) 237 238 /* Information we keep for the standard substitutions. */ 239 240 struct d_standard_sub_info 241 { 242 /* The code for this substitution. */ 243 char code; 244 /* The simple string it expands to. */ 245 const char *simple_expansion; 246 /* The length of the simple expansion. */ 247 int simple_len; 248 /* The results of a full, verbose, expansion. This is used when 249 qualifying a constructor/destructor, or when in verbose mode. */ 250 const char *full_expansion; 251 /* The length of the full expansion. */ 252 int full_len; 253 /* What to set the last_name field of d_info to; NULL if we should 254 not set it. This is only relevant when qualifying a 255 constructor/destructor. */ 256 const char *set_last_name; 257 /* The length of set_last_name. */ 258 int set_last_name_len; 259 }; 260 261 /* Accessors for subtrees of struct demangle_component. */ 262 263 #define d_left(dc) ((dc)->u.s_binary.left) 264 #define d_right(dc) ((dc)->u.s_binary.right) 265 266 /* A list of templates. This is used while printing. */ 267 268 struct d_print_template 269 { 270 /* Next template on the list. */ 271 struct d_print_template *next; 272 /* This template. */ 273 const struct demangle_component *template_decl; 274 }; 275 276 /* A list of type modifiers. This is used while printing. */ 277 278 struct d_print_mod 279 { 280 /* Next modifier on the list. These are in the reverse of the order 281 in which they appeared in the mangled string. */ 282 struct d_print_mod *next; 283 /* The modifier. */ 284 struct demangle_component *mod; 285 /* Whether this modifier was printed. */ 286 int printed; 287 /* The list of templates which applies to this modifier. */ 288 struct d_print_template *templates; 289 }; 290 291 /* We use these structures to hold information during printing. */ 292 293 struct d_growable_string 294 { 295 /* Buffer holding the result. */ 296 char *buf; 297 /* Current length of data in buffer. */ 298 size_t len; 299 /* Allocated size of buffer. */ 300 size_t alc; 301 /* Set to 1 if we had a memory allocation failure. */ 302 int allocation_failure; 303 }; 304 305 /* Stack of components, innermost first, used to avoid loops. */ 306 307 struct d_component_stack 308 { 309 /* This component. */ 310 const struct demangle_component *dc; 311 /* This component's parent. */ 312 const struct d_component_stack *parent; 313 }; 314 315 /* A demangle component and some scope captured when it was first 316 traversed. */ 317 318 struct d_saved_scope 319 { 320 /* The component whose scope this is. */ 321 const struct demangle_component *container; 322 /* The list of templates, if any, that was current when this 323 scope was captured. */ 324 struct d_print_template *templates; 325 }; 326 327 /* Checkpoint structure to allow backtracking. This holds copies 328 of the fields of struct d_info that need to be restored 329 if a trial parse needs to be backtracked over. */ 330 331 struct d_info_checkpoint 332 { 333 const char *n; 334 int next_comp; 335 int next_sub; 336 int did_subs; 337 int expansion; 338 }; 339 340 enum { D_PRINT_BUFFER_LENGTH = 256 }; 341 struct d_print_info 342 { 343 /* Fixed-length allocated buffer for demangled data, flushed to the 344 callback with a NUL termination once full. */ 345 char buf[D_PRINT_BUFFER_LENGTH]; 346 /* Current length of data in buffer. */ 347 size_t len; 348 /* The last character printed, saved individually so that it survives 349 any buffer flush. */ 350 char last_char; 351 /* Callback function to handle demangled buffer flush. */ 352 demangle_callbackref callback; 353 /* Opaque callback argument. */ 354 void *opaque; 355 /* The current list of templates, if any. */ 356 struct d_print_template *templates; 357 /* The current list of modifiers (e.g., pointer, reference, etc.), 358 if any. */ 359 struct d_print_mod *modifiers; 360 /* Set to 1 if we saw a demangling error. */ 361 int demangle_failure; 362 /* Non-zero if we're printing a lambda argument. A template 363 parameter reference actually means 'auto'. */ 364 int is_lambda_arg; 365 /* The current index into any template argument packs we are using 366 for printing, or -1 to print the whole pack. */ 367 int pack_index; 368 /* Number of d_print_flush calls so far. */ 369 unsigned long int flush_count; 370 /* Stack of components, innermost first, used to avoid loops. */ 371 const struct d_component_stack *component_stack; 372 /* Array of saved scopes for evaluating substitutions. */ 373 struct d_saved_scope *saved_scopes; 374 /* Index of the next unused saved scope in the above array. */ 375 int next_saved_scope; 376 /* Number of saved scopes in the above array. */ 377 int num_saved_scopes; 378 /* Array of templates for saving into scopes. */ 379 struct d_print_template *copy_templates; 380 /* Index of the next unused copy template in the above array. */ 381 int next_copy_template; 382 /* Number of copy templates in the above array. */ 383 int num_copy_templates; 384 /* The nearest enclosing template, if any. */ 385 const struct demangle_component *current_template; 386 }; 387 388 #ifdef CP_DEMANGLE_DEBUG 389 static void d_dump (struct demangle_component *, int); 390 #endif 391 392 static struct demangle_component * 393 d_make_empty (struct d_info *); 394 395 static struct demangle_component * 396 d_make_comp (struct d_info *, enum demangle_component_type, 397 struct demangle_component *, 398 struct demangle_component *); 399 400 static struct demangle_component * 401 d_make_name (struct d_info *, const char *, int); 402 403 static struct demangle_component * 404 d_make_demangle_mangled_name (struct d_info *, const char *); 405 406 static struct demangle_component * 407 d_make_builtin_type (struct d_info *, 408 const struct demangle_builtin_type_info *); 409 410 static struct demangle_component * 411 d_make_operator (struct d_info *, 412 const struct demangle_operator_info *); 413 414 static struct demangle_component * 415 d_make_extended_operator (struct d_info *, int, 416 struct demangle_component *); 417 418 static struct demangle_component * 419 d_make_ctor (struct d_info *, enum gnu_v3_ctor_kinds, 420 struct demangle_component *); 421 422 static struct demangle_component * 423 d_make_dtor (struct d_info *, enum gnu_v3_dtor_kinds, 424 struct demangle_component *); 425 426 static struct demangle_component * 427 d_make_template_param (struct d_info *, int); 428 429 static struct demangle_component * 430 d_make_sub (struct d_info *, const char *, int); 431 432 static int 433 has_return_type (struct demangle_component *); 434 435 static int 436 is_ctor_dtor_or_conversion (struct demangle_component *); 437 438 static struct demangle_component *d_encoding (struct d_info *, int); 439 440 static struct demangle_component *d_name (struct d_info *); 441 442 static struct demangle_component *d_nested_name (struct d_info *); 443 444 static struct demangle_component *d_prefix (struct d_info *); 445 446 static struct demangle_component *d_unqualified_name (struct d_info *); 447 448 static struct demangle_component *d_source_name (struct d_info *); 449 450 static int d_number (struct d_info *); 451 452 static struct demangle_component *d_identifier (struct d_info *, int); 453 454 static struct demangle_component *d_operator_name (struct d_info *); 455 456 static struct demangle_component *d_special_name (struct d_info *); 457 458 static struct demangle_component *d_parmlist (struct d_info *); 459 460 static int d_call_offset (struct d_info *, int); 461 462 static struct demangle_component *d_ctor_dtor_name (struct d_info *); 463 464 static struct demangle_component ** 465 d_cv_qualifiers (struct d_info *, struct demangle_component **, int); 466 467 static struct demangle_component * 468 d_ref_qualifier (struct d_info *, struct demangle_component *); 469 470 static struct demangle_component * 471 d_function_type (struct d_info *); 472 473 static struct demangle_component * 474 d_bare_function_type (struct d_info *, int); 475 476 static struct demangle_component * 477 d_class_enum_type (struct d_info *); 478 479 static struct demangle_component *d_array_type (struct d_info *); 480 481 static struct demangle_component *d_vector_type (struct d_info *); 482 483 static struct demangle_component * 484 d_pointer_to_member_type (struct d_info *); 485 486 static struct demangle_component * 487 d_template_param (struct d_info *); 488 489 static struct demangle_component *d_template_args (struct d_info *); 490 static struct demangle_component *d_template_args_1 (struct d_info *); 491 492 static struct demangle_component * 493 d_template_arg (struct d_info *); 494 495 static struct demangle_component *d_expression (struct d_info *); 496 497 static struct demangle_component *d_expr_primary (struct d_info *); 498 499 static struct demangle_component *d_local_name (struct d_info *); 500 501 static int d_discriminator (struct d_info *); 502 503 static struct demangle_component *d_lambda (struct d_info *); 504 505 static struct demangle_component *d_unnamed_type (struct d_info *); 506 507 static struct demangle_component * 508 d_clone_suffix (struct d_info *, struct demangle_component *); 509 510 static int 511 d_add_substitution (struct d_info *, struct demangle_component *); 512 513 static struct demangle_component *d_substitution (struct d_info *, int); 514 515 static void d_checkpoint (struct d_info *, struct d_info_checkpoint *); 516 517 static void d_backtrack (struct d_info *, struct d_info_checkpoint *); 518 519 static void d_growable_string_init (struct d_growable_string *, size_t); 520 521 static inline void 522 d_growable_string_resize (struct d_growable_string *, size_t); 523 524 static inline void 525 d_growable_string_append_buffer (struct d_growable_string *, 526 const char *, size_t); 527 static void 528 d_growable_string_callback_adapter (const char *, size_t, void *); 529 530 static void 531 d_print_init (struct d_print_info *, demangle_callbackref, void *, 532 const struct demangle_component *); 533 534 static inline void d_print_error (struct d_print_info *); 535 536 static inline int d_print_saw_error (struct d_print_info *); 537 538 static inline void d_print_flush (struct d_print_info *); 539 540 static inline void d_append_char (struct d_print_info *, char); 541 542 static inline void d_append_buffer (struct d_print_info *, 543 const char *, size_t); 544 545 static inline void d_append_string (struct d_print_info *, const char *); 546 547 static inline char d_last_char (struct d_print_info *); 548 549 static void 550 d_print_comp (struct d_print_info *, int, struct demangle_component *); 551 552 static void 553 d_print_java_identifier (struct d_print_info *, const char *, int); 554 555 static void 556 d_print_mod_list (struct d_print_info *, int, struct d_print_mod *, int); 557 558 static void 559 d_print_mod (struct d_print_info *, int, struct demangle_component *); 560 561 static void 562 d_print_function_type (struct d_print_info *, int, 563 struct demangle_component *, 564 struct d_print_mod *); 565 566 static void 567 d_print_array_type (struct d_print_info *, int, 568 struct demangle_component *, 569 struct d_print_mod *); 570 571 static void 572 d_print_expr_op (struct d_print_info *, int, struct demangle_component *); 573 574 static void d_print_cast (struct d_print_info *, int, 575 struct demangle_component *); 576 static void d_print_conversion (struct d_print_info *, int, 577 struct demangle_component *); 578 579 static int d_demangle_callback (const char *, int, 580 demangle_callbackref, void *); 581 static char *d_demangle (const char *, int, size_t *); 582 583 /* True iff TYPE is a demangling component representing a 584 function-type-qualifier. */ 585 586 static int 587 is_fnqual_component_type (enum demangle_component_type type) 588 { 589 return (type == DEMANGLE_COMPONENT_RESTRICT_THIS 590 || type == DEMANGLE_COMPONENT_VOLATILE_THIS 591 || type == DEMANGLE_COMPONENT_CONST_THIS 592 || type == DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS 593 || type == DEMANGLE_COMPONENT_TRANSACTION_SAFE 594 || type == DEMANGLE_COMPONENT_NOEXCEPT 595 || type == DEMANGLE_COMPONENT_THROW_SPEC 596 || type == DEMANGLE_COMPONENT_REFERENCE_THIS); 597 } 598 599 #define FNQUAL_COMPONENT_CASE \ 600 case DEMANGLE_COMPONENT_RESTRICT_THIS: \ 601 case DEMANGLE_COMPONENT_VOLATILE_THIS: \ 602 case DEMANGLE_COMPONENT_CONST_THIS: \ 603 case DEMANGLE_COMPONENT_REFERENCE_THIS: \ 604 case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS: \ 605 case DEMANGLE_COMPONENT_TRANSACTION_SAFE: \ 606 case DEMANGLE_COMPONENT_NOEXCEPT: \ 607 case DEMANGLE_COMPONENT_THROW_SPEC 608 609 #ifdef CP_DEMANGLE_DEBUG 610 611 static void 612 d_dump (struct demangle_component *dc, int indent) 613 { 614 int i; 615 616 if (dc == NULL) 617 { 618 if (indent == 0) 619 printf ("failed demangling\n"); 620 return; 621 } 622 623 for (i = 0; i < indent; ++i) 624 putchar (' '); 625 626 switch (dc->type) 627 { 628 case DEMANGLE_COMPONENT_NAME: 629 printf ("name '%.*s'\n", dc->u.s_name.len, dc->u.s_name.s); 630 return; 631 case DEMANGLE_COMPONENT_TAGGED_NAME: 632 printf ("tagged name\n"); 633 d_dump (dc->u.s_binary.left, indent + 2); 634 d_dump (dc->u.s_binary.right, indent + 2); 635 return; 636 case DEMANGLE_COMPONENT_TEMPLATE_PARAM: 637 printf ("template parameter %ld\n", dc->u.s_number.number); 638 return; 639 case DEMANGLE_COMPONENT_FUNCTION_PARAM: 640 printf ("function parameter %ld\n", dc->u.s_number.number); 641 return; 642 case DEMANGLE_COMPONENT_CTOR: 643 printf ("constructor %d\n", (int) dc->u.s_ctor.kind); 644 d_dump (dc->u.s_ctor.name, indent + 2); 645 return; 646 case DEMANGLE_COMPONENT_DTOR: 647 printf ("destructor %d\n", (int) dc->u.s_dtor.kind); 648 d_dump (dc->u.s_dtor.name, indent + 2); 649 return; 650 case DEMANGLE_COMPONENT_SUB_STD: 651 printf ("standard substitution %s\n", dc->u.s_string.string); 652 return; 653 case DEMANGLE_COMPONENT_BUILTIN_TYPE: 654 printf ("builtin type %s\n", dc->u.s_builtin.type->name); 655 return; 656 case DEMANGLE_COMPONENT_OPERATOR: 657 printf ("operator %s\n", dc->u.s_operator.op->name); 658 return; 659 case DEMANGLE_COMPONENT_EXTENDED_OPERATOR: 660 printf ("extended operator with %d args\n", 661 dc->u.s_extended_operator.args); 662 d_dump (dc->u.s_extended_operator.name, indent + 2); 663 return; 664 665 case DEMANGLE_COMPONENT_QUAL_NAME: 666 printf ("qualified name\n"); 667 break; 668 case DEMANGLE_COMPONENT_LOCAL_NAME: 669 printf ("local name\n"); 670 break; 671 case DEMANGLE_COMPONENT_TYPED_NAME: 672 printf ("typed name\n"); 673 break; 674 case DEMANGLE_COMPONENT_TEMPLATE: 675 printf ("template\n"); 676 break; 677 case DEMANGLE_COMPONENT_VTABLE: 678 printf ("vtable\n"); 679 break; 680 case DEMANGLE_COMPONENT_VTT: 681 printf ("VTT\n"); 682 break; 683 case DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE: 684 printf ("construction vtable\n"); 685 break; 686 case DEMANGLE_COMPONENT_TYPEINFO: 687 printf ("typeinfo\n"); 688 break; 689 case DEMANGLE_COMPONENT_TYPEINFO_NAME: 690 printf ("typeinfo name\n"); 691 break; 692 case DEMANGLE_COMPONENT_TYPEINFO_FN: 693 printf ("typeinfo function\n"); 694 break; 695 case DEMANGLE_COMPONENT_THUNK: 696 printf ("thunk\n"); 697 break; 698 case DEMANGLE_COMPONENT_VIRTUAL_THUNK: 699 printf ("virtual thunk\n"); 700 break; 701 case DEMANGLE_COMPONENT_COVARIANT_THUNK: 702 printf ("covariant thunk\n"); 703 break; 704 case DEMANGLE_COMPONENT_JAVA_CLASS: 705 printf ("java class\n"); 706 break; 707 case DEMANGLE_COMPONENT_GUARD: 708 printf ("guard\n"); 709 break; 710 case DEMANGLE_COMPONENT_REFTEMP: 711 printf ("reference temporary\n"); 712 break; 713 case DEMANGLE_COMPONENT_HIDDEN_ALIAS: 714 printf ("hidden alias\n"); 715 break; 716 case DEMANGLE_COMPONENT_TRANSACTION_CLONE: 717 printf ("transaction clone\n"); 718 break; 719 case DEMANGLE_COMPONENT_NONTRANSACTION_CLONE: 720 printf ("non-transaction clone\n"); 721 break; 722 case DEMANGLE_COMPONENT_RESTRICT: 723 printf ("restrict\n"); 724 break; 725 case DEMANGLE_COMPONENT_VOLATILE: 726 printf ("volatile\n"); 727 break; 728 case DEMANGLE_COMPONENT_CONST: 729 printf ("const\n"); 730 break; 731 case DEMANGLE_COMPONENT_RESTRICT_THIS: 732 printf ("restrict this\n"); 733 break; 734 case DEMANGLE_COMPONENT_VOLATILE_THIS: 735 printf ("volatile this\n"); 736 break; 737 case DEMANGLE_COMPONENT_CONST_THIS: 738 printf ("const this\n"); 739 break; 740 case DEMANGLE_COMPONENT_REFERENCE_THIS: 741 printf ("reference this\n"); 742 break; 743 case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS: 744 printf ("rvalue reference this\n"); 745 break; 746 case DEMANGLE_COMPONENT_TRANSACTION_SAFE: 747 printf ("transaction_safe this\n"); 748 break; 749 case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL: 750 printf ("vendor type qualifier\n"); 751 break; 752 case DEMANGLE_COMPONENT_POINTER: 753 printf ("pointer\n"); 754 break; 755 case DEMANGLE_COMPONENT_REFERENCE: 756 printf ("reference\n"); 757 break; 758 case DEMANGLE_COMPONENT_RVALUE_REFERENCE: 759 printf ("rvalue reference\n"); 760 break; 761 case DEMANGLE_COMPONENT_COMPLEX: 762 printf ("complex\n"); 763 break; 764 case DEMANGLE_COMPONENT_IMAGINARY: 765 printf ("imaginary\n"); 766 break; 767 case DEMANGLE_COMPONENT_VENDOR_TYPE: 768 printf ("vendor type\n"); 769 break; 770 case DEMANGLE_COMPONENT_FUNCTION_TYPE: 771 printf ("function type\n"); 772 break; 773 case DEMANGLE_COMPONENT_ARRAY_TYPE: 774 printf ("array type\n"); 775 break; 776 case DEMANGLE_COMPONENT_PTRMEM_TYPE: 777 printf ("pointer to member type\n"); 778 break; 779 case DEMANGLE_COMPONENT_FIXED_TYPE: 780 printf ("fixed-point type, accum? %d, sat? %d\n", 781 dc->u.s_fixed.accum, dc->u.s_fixed.sat); 782 d_dump (dc->u.s_fixed.length, indent + 2); 783 break; 784 case DEMANGLE_COMPONENT_ARGLIST: 785 printf ("argument list\n"); 786 break; 787 case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST: 788 printf ("template argument list\n"); 789 break; 790 case DEMANGLE_COMPONENT_INITIALIZER_LIST: 791 printf ("initializer list\n"); 792 break; 793 case DEMANGLE_COMPONENT_CAST: 794 printf ("cast\n"); 795 break; 796 case DEMANGLE_COMPONENT_CONVERSION: 797 printf ("conversion operator\n"); 798 break; 799 case DEMANGLE_COMPONENT_NULLARY: 800 printf ("nullary operator\n"); 801 break; 802 case DEMANGLE_COMPONENT_UNARY: 803 printf ("unary operator\n"); 804 break; 805 case DEMANGLE_COMPONENT_BINARY: 806 printf ("binary operator\n"); 807 break; 808 case DEMANGLE_COMPONENT_BINARY_ARGS: 809 printf ("binary operator arguments\n"); 810 break; 811 case DEMANGLE_COMPONENT_TRINARY: 812 printf ("trinary operator\n"); 813 break; 814 case DEMANGLE_COMPONENT_TRINARY_ARG1: 815 printf ("trinary operator arguments 1\n"); 816 break; 817 case DEMANGLE_COMPONENT_TRINARY_ARG2: 818 printf ("trinary operator arguments 1\n"); 819 break; 820 case DEMANGLE_COMPONENT_LITERAL: 821 printf ("literal\n"); 822 break; 823 case DEMANGLE_COMPONENT_LITERAL_NEG: 824 printf ("negative literal\n"); 825 break; 826 case DEMANGLE_COMPONENT_JAVA_RESOURCE: 827 printf ("java resource\n"); 828 break; 829 case DEMANGLE_COMPONENT_COMPOUND_NAME: 830 printf ("compound name\n"); 831 break; 832 case DEMANGLE_COMPONENT_CHARACTER: 833 printf ("character '%c'\n", dc->u.s_character.character); 834 return; 835 case DEMANGLE_COMPONENT_NUMBER: 836 printf ("number %ld\n", dc->u.s_number.number); 837 return; 838 case DEMANGLE_COMPONENT_DECLTYPE: 839 printf ("decltype\n"); 840 break; 841 case DEMANGLE_COMPONENT_PACK_EXPANSION: 842 printf ("pack expansion\n"); 843 break; 844 case DEMANGLE_COMPONENT_TLS_INIT: 845 printf ("tls init function\n"); 846 break; 847 case DEMANGLE_COMPONENT_TLS_WRAPPER: 848 printf ("tls wrapper function\n"); 849 break; 850 case DEMANGLE_COMPONENT_DEFAULT_ARG: 851 printf ("default argument %d\n", dc->u.s_unary_num.num); 852 d_dump (dc->u.s_unary_num.sub, indent+2); 853 return; 854 case DEMANGLE_COMPONENT_LAMBDA: 855 printf ("lambda %d\n", dc->u.s_unary_num.num); 856 d_dump (dc->u.s_unary_num.sub, indent+2); 857 return; 858 } 859 860 d_dump (d_left (dc), indent + 2); 861 d_dump (d_right (dc), indent + 2); 862 } 863 864 #endif /* CP_DEMANGLE_DEBUG */ 865 866 /* Fill in a DEMANGLE_COMPONENT_NAME. */ 867 868 CP_STATIC_IF_GLIBCPP_V3 869 int 870 cplus_demangle_fill_name (struct demangle_component *p, const char *s, int len) 871 { 872 if (p == NULL || s == NULL || len == 0) 873 return 0; 874 p->d_printing = 0; 875 p->type = DEMANGLE_COMPONENT_NAME; 876 p->u.s_name.s = s; 877 p->u.s_name.len = len; 878 return 1; 879 } 880 881 /* Fill in a DEMANGLE_COMPONENT_EXTENDED_OPERATOR. */ 882 883 CP_STATIC_IF_GLIBCPP_V3 884 int 885 cplus_demangle_fill_extended_operator (struct demangle_component *p, int args, 886 struct demangle_component *name) 887 { 888 if (p == NULL || args < 0 || name == NULL) 889 return 0; 890 p->d_printing = 0; 891 p->type = DEMANGLE_COMPONENT_EXTENDED_OPERATOR; 892 p->u.s_extended_operator.args = args; 893 p->u.s_extended_operator.name = name; 894 return 1; 895 } 896 897 /* Fill in a DEMANGLE_COMPONENT_CTOR. */ 898 899 CP_STATIC_IF_GLIBCPP_V3 900 int 901 cplus_demangle_fill_ctor (struct demangle_component *p, 902 enum gnu_v3_ctor_kinds kind, 903 struct demangle_component *name) 904 { 905 if (p == NULL 906 || name == NULL 907 || (int) kind < gnu_v3_complete_object_ctor 908 || (int) kind > gnu_v3_object_ctor_group) 909 return 0; 910 p->d_printing = 0; 911 p->type = DEMANGLE_COMPONENT_CTOR; 912 p->u.s_ctor.kind = kind; 913 p->u.s_ctor.name = name; 914 return 1; 915 } 916 917 /* Fill in a DEMANGLE_COMPONENT_DTOR. */ 918 919 CP_STATIC_IF_GLIBCPP_V3 920 int 921 cplus_demangle_fill_dtor (struct demangle_component *p, 922 enum gnu_v3_dtor_kinds kind, 923 struct demangle_component *name) 924 { 925 if (p == NULL 926 || name == NULL 927 || (int) kind < gnu_v3_deleting_dtor 928 || (int) kind > gnu_v3_object_dtor_group) 929 return 0; 930 p->d_printing = 0; 931 p->type = DEMANGLE_COMPONENT_DTOR; 932 p->u.s_dtor.kind = kind; 933 p->u.s_dtor.name = name; 934 return 1; 935 } 936 937 /* Add a new component. */ 938 939 static struct demangle_component * 940 d_make_empty (struct d_info *di) 941 { 942 struct demangle_component *p; 943 944 if (di->next_comp >= di->num_comps) 945 return NULL; 946 p = &di->comps[di->next_comp]; 947 p->d_printing = 0; 948 ++di->next_comp; 949 return p; 950 } 951 952 /* Add a new generic component. */ 953 954 static struct demangle_component * 955 d_make_comp (struct d_info *di, enum demangle_component_type type, 956 struct demangle_component *left, 957 struct demangle_component *right) 958 { 959 struct demangle_component *p; 960 961 /* We check for errors here. A typical error would be a NULL return 962 from a subroutine. We catch those here, and return NULL 963 upward. */ 964 switch (type) 965 { 966 /* These types require two parameters. */ 967 case DEMANGLE_COMPONENT_QUAL_NAME: 968 case DEMANGLE_COMPONENT_LOCAL_NAME: 969 case DEMANGLE_COMPONENT_TYPED_NAME: 970 case DEMANGLE_COMPONENT_TAGGED_NAME: 971 case DEMANGLE_COMPONENT_TEMPLATE: 972 case DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE: 973 case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL: 974 case DEMANGLE_COMPONENT_PTRMEM_TYPE: 975 case DEMANGLE_COMPONENT_UNARY: 976 case DEMANGLE_COMPONENT_BINARY: 977 case DEMANGLE_COMPONENT_BINARY_ARGS: 978 case DEMANGLE_COMPONENT_TRINARY: 979 case DEMANGLE_COMPONENT_TRINARY_ARG1: 980 case DEMANGLE_COMPONENT_LITERAL: 981 case DEMANGLE_COMPONENT_LITERAL_NEG: 982 case DEMANGLE_COMPONENT_COMPOUND_NAME: 983 case DEMANGLE_COMPONENT_VECTOR_TYPE: 984 case DEMANGLE_COMPONENT_CLONE: 985 if (left == NULL || right == NULL) 986 return NULL; 987 break; 988 989 /* These types only require one parameter. */ 990 case DEMANGLE_COMPONENT_VTABLE: 991 case DEMANGLE_COMPONENT_VTT: 992 case DEMANGLE_COMPONENT_TYPEINFO: 993 case DEMANGLE_COMPONENT_TYPEINFO_NAME: 994 case DEMANGLE_COMPONENT_TYPEINFO_FN: 995 case DEMANGLE_COMPONENT_THUNK: 996 case DEMANGLE_COMPONENT_VIRTUAL_THUNK: 997 case DEMANGLE_COMPONENT_COVARIANT_THUNK: 998 case DEMANGLE_COMPONENT_JAVA_CLASS: 999 case DEMANGLE_COMPONENT_GUARD: 1000 case DEMANGLE_COMPONENT_TLS_INIT: 1001 case DEMANGLE_COMPONENT_TLS_WRAPPER: 1002 case DEMANGLE_COMPONENT_REFTEMP: 1003 case DEMANGLE_COMPONENT_HIDDEN_ALIAS: 1004 case DEMANGLE_COMPONENT_TRANSACTION_CLONE: 1005 case DEMANGLE_COMPONENT_NONTRANSACTION_CLONE: 1006 case DEMANGLE_COMPONENT_POINTER: 1007 case DEMANGLE_COMPONENT_REFERENCE: 1008 case DEMANGLE_COMPONENT_RVALUE_REFERENCE: 1009 case DEMANGLE_COMPONENT_COMPLEX: 1010 case DEMANGLE_COMPONENT_IMAGINARY: 1011 case DEMANGLE_COMPONENT_VENDOR_TYPE: 1012 case DEMANGLE_COMPONENT_CAST: 1013 case DEMANGLE_COMPONENT_CONVERSION: 1014 case DEMANGLE_COMPONENT_JAVA_RESOURCE: 1015 case DEMANGLE_COMPONENT_DECLTYPE: 1016 case DEMANGLE_COMPONENT_PACK_EXPANSION: 1017 case DEMANGLE_COMPONENT_GLOBAL_CONSTRUCTORS: 1018 case DEMANGLE_COMPONENT_GLOBAL_DESTRUCTORS: 1019 case DEMANGLE_COMPONENT_NULLARY: 1020 case DEMANGLE_COMPONENT_TRINARY_ARG2: 1021 if (left == NULL) 1022 return NULL; 1023 break; 1024 1025 /* This needs a right parameter, but the left parameter can be 1026 empty. */ 1027 case DEMANGLE_COMPONENT_ARRAY_TYPE: 1028 case DEMANGLE_COMPONENT_INITIALIZER_LIST: 1029 if (right == NULL) 1030 return NULL; 1031 break; 1032 1033 /* These are allowed to have no parameters--in some cases they 1034 will be filled in later. */ 1035 case DEMANGLE_COMPONENT_FUNCTION_TYPE: 1036 case DEMANGLE_COMPONENT_RESTRICT: 1037 case DEMANGLE_COMPONENT_VOLATILE: 1038 case DEMANGLE_COMPONENT_CONST: 1039 case DEMANGLE_COMPONENT_ARGLIST: 1040 case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST: 1041 FNQUAL_COMPONENT_CASE: 1042 break; 1043 1044 /* Other types should not be seen here. */ 1045 default: 1046 return NULL; 1047 } 1048 1049 p = d_make_empty (di); 1050 if (p != NULL) 1051 { 1052 p->type = type; 1053 p->u.s_binary.left = left; 1054 p->u.s_binary.right = right; 1055 } 1056 return p; 1057 } 1058 1059 /* Add a new demangle mangled name component. */ 1060 1061 static struct demangle_component * 1062 d_make_demangle_mangled_name (struct d_info *di, const char *s) 1063 { 1064 if (d_peek_char (di) != '_' || d_peek_next_char (di) != 'Z') 1065 return d_make_name (di, s, strlen (s)); 1066 d_advance (di, 2); 1067 return d_encoding (di, 0); 1068 } 1069 1070 /* Add a new name component. */ 1071 1072 static struct demangle_component * 1073 d_make_name (struct d_info *di, const char *s, int len) 1074 { 1075 struct demangle_component *p; 1076 1077 p = d_make_empty (di); 1078 if (! cplus_demangle_fill_name (p, s, len)) 1079 return NULL; 1080 return p; 1081 } 1082 1083 /* Add a new builtin type component. */ 1084 1085 static struct demangle_component * 1086 d_make_builtin_type (struct d_info *di, 1087 const struct demangle_builtin_type_info *type) 1088 { 1089 struct demangle_component *p; 1090 1091 if (type == NULL) 1092 return NULL; 1093 p = d_make_empty (di); 1094 if (p != NULL) 1095 { 1096 p->type = DEMANGLE_COMPONENT_BUILTIN_TYPE; 1097 p->u.s_builtin.type = type; 1098 } 1099 return p; 1100 } 1101 1102 /* Add a new operator component. */ 1103 1104 static struct demangle_component * 1105 d_make_operator (struct d_info *di, const struct demangle_operator_info *op) 1106 { 1107 struct demangle_component *p; 1108 1109 p = d_make_empty (di); 1110 if (p != NULL) 1111 { 1112 p->type = DEMANGLE_COMPONENT_OPERATOR; 1113 p->u.s_operator.op = op; 1114 } 1115 return p; 1116 } 1117 1118 /* Add a new extended operator component. */ 1119 1120 static struct demangle_component * 1121 d_make_extended_operator (struct d_info *di, int args, 1122 struct demangle_component *name) 1123 { 1124 struct demangle_component *p; 1125 1126 p = d_make_empty (di); 1127 if (! cplus_demangle_fill_extended_operator (p, args, name)) 1128 return NULL; 1129 return p; 1130 } 1131 1132 static struct demangle_component * 1133 d_make_default_arg (struct d_info *di, int num, 1134 struct demangle_component *sub) 1135 { 1136 struct demangle_component *p = d_make_empty (di); 1137 if (p) 1138 { 1139 p->type = DEMANGLE_COMPONENT_DEFAULT_ARG; 1140 p->u.s_unary_num.num = num; 1141 p->u.s_unary_num.sub = sub; 1142 } 1143 return p; 1144 } 1145 1146 /* Add a new constructor component. */ 1147 1148 static struct demangle_component * 1149 d_make_ctor (struct d_info *di, enum gnu_v3_ctor_kinds kind, 1150 struct demangle_component *name) 1151 { 1152 struct demangle_component *p; 1153 1154 p = d_make_empty (di); 1155 if (! cplus_demangle_fill_ctor (p, kind, name)) 1156 return NULL; 1157 return p; 1158 } 1159 1160 /* Add a new destructor component. */ 1161 1162 static struct demangle_component * 1163 d_make_dtor (struct d_info *di, enum gnu_v3_dtor_kinds kind, 1164 struct demangle_component *name) 1165 { 1166 struct demangle_component *p; 1167 1168 p = d_make_empty (di); 1169 if (! cplus_demangle_fill_dtor (p, kind, name)) 1170 return NULL; 1171 return p; 1172 } 1173 1174 /* Add a new template parameter. */ 1175 1176 static struct demangle_component * 1177 d_make_template_param (struct d_info *di, int i) 1178 { 1179 struct demangle_component *p; 1180 1181 p = d_make_empty (di); 1182 if (p != NULL) 1183 { 1184 p->type = DEMANGLE_COMPONENT_TEMPLATE_PARAM; 1185 p->u.s_number.number = i; 1186 } 1187 return p; 1188 } 1189 1190 /* Add a new function parameter. */ 1191 1192 static struct demangle_component * 1193 d_make_function_param (struct d_info *di, int i) 1194 { 1195 struct demangle_component *p; 1196 1197 p = d_make_empty (di); 1198 if (p != NULL) 1199 { 1200 p->type = DEMANGLE_COMPONENT_FUNCTION_PARAM; 1201 p->u.s_number.number = i; 1202 } 1203 return p; 1204 } 1205 1206 /* Add a new standard substitution component. */ 1207 1208 static struct demangle_component * 1209 d_make_sub (struct d_info *di, const char *name, int len) 1210 { 1211 struct demangle_component *p; 1212 1213 p = d_make_empty (di); 1214 if (p != NULL) 1215 { 1216 p->type = DEMANGLE_COMPONENT_SUB_STD; 1217 p->u.s_string.string = name; 1218 p->u.s_string.len = len; 1219 } 1220 return p; 1221 } 1222 1223 /* <mangled-name> ::= _Z <encoding> [<clone-suffix>]* 1224 1225 TOP_LEVEL is non-zero when called at the top level. */ 1226 1227 CP_STATIC_IF_GLIBCPP_V3 1228 struct demangle_component * 1229 cplus_demangle_mangled_name (struct d_info *di, int top_level) 1230 { 1231 struct demangle_component *p; 1232 1233 if (! d_check_char (di, '_') 1234 /* Allow missing _ if not at toplevel to work around a 1235 bug in G++ abi-version=2 mangling; see the comment in 1236 write_template_arg. */ 1237 && top_level) 1238 return NULL; 1239 if (! d_check_char (di, 'Z')) 1240 return NULL; 1241 p = d_encoding (di, top_level); 1242 1243 /* If at top level and parsing parameters, check for a clone 1244 suffix. */ 1245 if (top_level && (di->options & DMGL_PARAMS) != 0) 1246 while (d_peek_char (di) == '.' 1247 && (IS_LOWER (d_peek_next_char (di)) 1248 || d_peek_next_char (di) == '_' 1249 || IS_DIGIT (d_peek_next_char (di)))) 1250 p = d_clone_suffix (di, p); 1251 1252 return p; 1253 } 1254 1255 /* Return whether a function should have a return type. The argument 1256 is the function name, which may be qualified in various ways. The 1257 rules are that template functions have return types with some 1258 exceptions, function types which are not part of a function name 1259 mangling have return types with some exceptions, and non-template 1260 function names do not have return types. The exceptions are that 1261 constructors, destructors, and conversion operators do not have 1262 return types. */ 1263 1264 static int 1265 has_return_type (struct demangle_component *dc) 1266 { 1267 if (dc == NULL) 1268 return 0; 1269 switch (dc->type) 1270 { 1271 default: 1272 return 0; 1273 case DEMANGLE_COMPONENT_TEMPLATE: 1274 return ! is_ctor_dtor_or_conversion (d_left (dc)); 1275 FNQUAL_COMPONENT_CASE: 1276 return has_return_type (d_left (dc)); 1277 } 1278 } 1279 1280 /* Return whether a name is a constructor, a destructor, or a 1281 conversion operator. */ 1282 1283 static int 1284 is_ctor_dtor_or_conversion (struct demangle_component *dc) 1285 { 1286 if (dc == NULL) 1287 return 0; 1288 switch (dc->type) 1289 { 1290 default: 1291 return 0; 1292 case DEMANGLE_COMPONENT_QUAL_NAME: 1293 case DEMANGLE_COMPONENT_LOCAL_NAME: 1294 return is_ctor_dtor_or_conversion (d_right (dc)); 1295 case DEMANGLE_COMPONENT_CTOR: 1296 case DEMANGLE_COMPONENT_DTOR: 1297 case DEMANGLE_COMPONENT_CONVERSION: 1298 return 1; 1299 } 1300 } 1301 1302 /* <encoding> ::= <(function) name> <bare-function-type> 1303 ::= <(data) name> 1304 ::= <special-name> 1305 1306 TOP_LEVEL is non-zero when called at the top level, in which case 1307 if DMGL_PARAMS is not set we do not demangle the function 1308 parameters. We only set this at the top level, because otherwise 1309 we would not correctly demangle names in local scopes. */ 1310 1311 static struct demangle_component * 1312 d_encoding (struct d_info *di, int top_level) 1313 { 1314 char peek = d_peek_char (di); 1315 1316 if (peek == 'G' || peek == 'T') 1317 return d_special_name (di); 1318 else 1319 { 1320 struct demangle_component *dc; 1321 1322 dc = d_name (di); 1323 1324 if (dc != NULL && top_level && (di->options & DMGL_PARAMS) == 0) 1325 { 1326 /* Strip off any initial CV-qualifiers, as they really apply 1327 to the `this' parameter, and they were not output by the 1328 v2 demangler without DMGL_PARAMS. */ 1329 while (dc->type == DEMANGLE_COMPONENT_RESTRICT_THIS 1330 || dc->type == DEMANGLE_COMPONENT_VOLATILE_THIS 1331 || dc->type == DEMANGLE_COMPONENT_CONST_THIS 1332 || dc->type == DEMANGLE_COMPONENT_REFERENCE_THIS 1333 || dc->type == DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS) 1334 dc = d_left (dc); 1335 1336 /* If the top level is a DEMANGLE_COMPONENT_LOCAL_NAME, then 1337 there may be function-qualifiers on its right argument which 1338 really apply here; this happens when parsing a class 1339 which is local to a function. */ 1340 if (dc->type == DEMANGLE_COMPONENT_LOCAL_NAME) 1341 { 1342 struct demangle_component *dcr; 1343 1344 dcr = d_right (dc); 1345 while (is_fnqual_component_type (dcr->type)) 1346 dcr = d_left (dcr); 1347 dc->u.s_binary.right = dcr; 1348 } 1349 1350 return dc; 1351 } 1352 1353 peek = d_peek_char (di); 1354 if (dc == NULL || peek == '\0' || peek == 'E') 1355 return dc; 1356 return d_make_comp (di, DEMANGLE_COMPONENT_TYPED_NAME, dc, 1357 d_bare_function_type (di, has_return_type (dc))); 1358 } 1359 } 1360 1361 /* <tagged-name> ::= <name> B <source-name> */ 1362 1363 static struct demangle_component * 1364 d_abi_tags (struct d_info *di, struct demangle_component *dc) 1365 { 1366 struct demangle_component *hold_last_name; 1367 char peek; 1368 1369 /* Preserve the last name, so the ABI tag doesn't clobber it. */ 1370 hold_last_name = di->last_name; 1371 1372 while (peek = d_peek_char (di), 1373 peek == 'B') 1374 { 1375 struct demangle_component *tag; 1376 d_advance (di, 1); 1377 tag = d_source_name (di); 1378 dc = d_make_comp (di, DEMANGLE_COMPONENT_TAGGED_NAME, dc, tag); 1379 } 1380 1381 di->last_name = hold_last_name; 1382 1383 return dc; 1384 } 1385 1386 /* <name> ::= <nested-name> 1387 ::= <unscoped-name> 1388 ::= <unscoped-template-name> <template-args> 1389 ::= <local-name> 1390 1391 <unscoped-name> ::= <unqualified-name> 1392 ::= St <unqualified-name> 1393 1394 <unscoped-template-name> ::= <unscoped-name> 1395 ::= <substitution> 1396 */ 1397 1398 static struct demangle_component * 1399 d_name (struct d_info *di) 1400 { 1401 char peek = d_peek_char (di); 1402 struct demangle_component *dc; 1403 1404 switch (peek) 1405 { 1406 case 'N': 1407 return d_nested_name (di); 1408 1409 case 'Z': 1410 return d_local_name (di); 1411 1412 case 'U': 1413 return d_unqualified_name (di); 1414 1415 case 'S': 1416 { 1417 int subst; 1418 1419 if (d_peek_next_char (di) != 't') 1420 { 1421 dc = d_substitution (di, 0); 1422 subst = 1; 1423 } 1424 else 1425 { 1426 d_advance (di, 2); 1427 dc = d_make_comp (di, DEMANGLE_COMPONENT_QUAL_NAME, 1428 d_make_name (di, "std", 3), 1429 d_unqualified_name (di)); 1430 di->expansion += 3; 1431 subst = 0; 1432 } 1433 1434 if (d_peek_char (di) != 'I') 1435 { 1436 /* The grammar does not permit this case to occur if we 1437 called d_substitution() above (i.e., subst == 1). We 1438 don't bother to check. */ 1439 } 1440 else 1441 { 1442 /* This is <template-args>, which means that we just saw 1443 <unscoped-template-name>, which is a substitution 1444 candidate if we didn't just get it from a 1445 substitution. */ 1446 if (! subst) 1447 { 1448 if (! d_add_substitution (di, dc)) 1449 return NULL; 1450 } 1451 dc = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, dc, 1452 d_template_args (di)); 1453 } 1454 1455 return dc; 1456 } 1457 1458 case 'L': 1459 default: 1460 dc = d_unqualified_name (di); 1461 if (d_peek_char (di) == 'I') 1462 { 1463 /* This is <template-args>, which means that we just saw 1464 <unscoped-template-name>, which is a substitution 1465 candidate. */ 1466 if (! d_add_substitution (di, dc)) 1467 return NULL; 1468 dc = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, dc, 1469 d_template_args (di)); 1470 } 1471 return dc; 1472 } 1473 } 1474 1475 /* <nested-name> ::= N [<CV-qualifiers>] [<ref-qualifier>] <prefix> <unqualified-name> E 1476 ::= N [<CV-qualifiers>] [<ref-qualifier>] <template-prefix> <template-args> E 1477 */ 1478 1479 static struct demangle_component * 1480 d_nested_name (struct d_info *di) 1481 { 1482 struct demangle_component *ret; 1483 struct demangle_component **pret; 1484 struct demangle_component *rqual; 1485 1486 if (! d_check_char (di, 'N')) 1487 return NULL; 1488 1489 pret = d_cv_qualifiers (di, &ret, 1); 1490 if (pret == NULL) 1491 return NULL; 1492 1493 /* Parse the ref-qualifier now and then attach it 1494 once we have something to attach it to. */ 1495 rqual = d_ref_qualifier (di, NULL); 1496 1497 *pret = d_prefix (di); 1498 if (*pret == NULL) 1499 return NULL; 1500 1501 if (rqual) 1502 { 1503 d_left (rqual) = ret; 1504 ret = rqual; 1505 } 1506 1507 if (! d_check_char (di, 'E')) 1508 return NULL; 1509 1510 return ret; 1511 } 1512 1513 /* <prefix> ::= <prefix> <unqualified-name> 1514 ::= <template-prefix> <template-args> 1515 ::= <template-param> 1516 ::= <decltype> 1517 ::= 1518 ::= <substitution> 1519 1520 <template-prefix> ::= <prefix> <(template) unqualified-name> 1521 ::= <template-param> 1522 ::= <substitution> 1523 */ 1524 1525 static struct demangle_component * 1526 d_prefix (struct d_info *di) 1527 { 1528 struct demangle_component *ret = NULL; 1529 1530 while (1) 1531 { 1532 char peek; 1533 enum demangle_component_type comb_type; 1534 struct demangle_component *dc; 1535 1536 peek = d_peek_char (di); 1537 if (peek == '\0') 1538 return NULL; 1539 1540 /* The older code accepts a <local-name> here, but I don't see 1541 that in the grammar. The older code does not accept a 1542 <template-param> here. */ 1543 1544 comb_type = DEMANGLE_COMPONENT_QUAL_NAME; 1545 if (peek == 'D') 1546 { 1547 char peek2 = d_peek_next_char (di); 1548 if (peek2 == 'T' || peek2 == 't') 1549 /* Decltype. */ 1550 dc = cplus_demangle_type (di); 1551 else 1552 /* Destructor name. */ 1553 dc = d_unqualified_name (di); 1554 } 1555 else if (IS_DIGIT (peek) 1556 || IS_LOWER (peek) 1557 || peek == 'C' 1558 || peek == 'U' 1559 || peek == 'L') 1560 dc = d_unqualified_name (di); 1561 else if (peek == 'S') 1562 dc = d_substitution (di, 1); 1563 else if (peek == 'I') 1564 { 1565 if (ret == NULL) 1566 return NULL; 1567 comb_type = DEMANGLE_COMPONENT_TEMPLATE; 1568 dc = d_template_args (di); 1569 } 1570 else if (peek == 'T') 1571 dc = d_template_param (di); 1572 else if (peek == 'E') 1573 return ret; 1574 else if (peek == 'M') 1575 { 1576 /* Initializer scope for a lambda. We don't need to represent 1577 this; the normal code will just treat the variable as a type 1578 scope, which gives appropriate output. */ 1579 if (ret == NULL) 1580 return NULL; 1581 d_advance (di, 1); 1582 continue; 1583 } 1584 else 1585 return NULL; 1586 1587 if (ret == NULL) 1588 ret = dc; 1589 else 1590 ret = d_make_comp (di, comb_type, ret, dc); 1591 1592 if (peek != 'S' && d_peek_char (di) != 'E') 1593 { 1594 if (! d_add_substitution (di, ret)) 1595 return NULL; 1596 } 1597 } 1598 } 1599 1600 /* <unqualified-name> ::= <operator-name> 1601 ::= <ctor-dtor-name> 1602 ::= <source-name> 1603 ::= <local-source-name> 1604 1605 <local-source-name> ::= L <source-name> <discriminator> 1606 */ 1607 1608 static struct demangle_component * 1609 d_unqualified_name (struct d_info *di) 1610 { 1611 struct demangle_component *ret; 1612 char peek; 1613 1614 peek = d_peek_char (di); 1615 if (IS_DIGIT (peek)) 1616 ret = d_source_name (di); 1617 else if (IS_LOWER (peek)) 1618 { 1619 if (peek == 'o' && d_peek_next_char (di) == 'n') 1620 d_advance (di, 2); 1621 ret = d_operator_name (di); 1622 if (ret != NULL && ret->type == DEMANGLE_COMPONENT_OPERATOR) 1623 { 1624 di->expansion += sizeof "operator" + ret->u.s_operator.op->len - 2; 1625 if (!strcmp (ret->u.s_operator.op->code, "li")) 1626 ret = d_make_comp (di, DEMANGLE_COMPONENT_UNARY, ret, 1627 d_source_name (di)); 1628 } 1629 } 1630 else if (peek == 'C' || peek == 'D') 1631 ret = d_ctor_dtor_name (di); 1632 else if (peek == 'L') 1633 { 1634 d_advance (di, 1); 1635 1636 ret = d_source_name (di); 1637 if (ret == NULL) 1638 return NULL; 1639 if (! d_discriminator (di)) 1640 return NULL; 1641 } 1642 else if (peek == 'U') 1643 { 1644 switch (d_peek_next_char (di)) 1645 { 1646 case 'l': 1647 ret = d_lambda (di); 1648 break; 1649 case 't': 1650 ret = d_unnamed_type (di); 1651 break; 1652 default: 1653 return NULL; 1654 } 1655 } 1656 else 1657 return NULL; 1658 1659 if (d_peek_char (di) == 'B') 1660 ret = d_abi_tags (di, ret); 1661 return ret; 1662 } 1663 1664 /* <source-name> ::= <(positive length) number> <identifier> */ 1665 1666 static struct demangle_component * 1667 d_source_name (struct d_info *di) 1668 { 1669 int len; 1670 struct demangle_component *ret; 1671 1672 len = d_number (di); 1673 if (len <= 0) 1674 return NULL; 1675 ret = d_identifier (di, len); 1676 di->last_name = ret; 1677 return ret; 1678 } 1679 1680 /* number ::= [n] <(non-negative decimal integer)> */ 1681 1682 static int 1683 d_number (struct d_info *di) 1684 { 1685 int negative; 1686 char peek; 1687 int ret; 1688 1689 negative = 0; 1690 peek = d_peek_char (di); 1691 if (peek == 'n') 1692 { 1693 negative = 1; 1694 d_advance (di, 1); 1695 peek = d_peek_char (di); 1696 } 1697 1698 ret = 0; 1699 while (1) 1700 { 1701 if (! IS_DIGIT (peek)) 1702 { 1703 if (negative) 1704 ret = - ret; 1705 return ret; 1706 } 1707 ret = ret * 10 + peek - '0'; 1708 d_advance (di, 1); 1709 peek = d_peek_char (di); 1710 } 1711 } 1712 1713 /* Like d_number, but returns a demangle_component. */ 1714 1715 static struct demangle_component * 1716 d_number_component (struct d_info *di) 1717 { 1718 struct demangle_component *ret = d_make_empty (di); 1719 if (ret) 1720 { 1721 ret->type = DEMANGLE_COMPONENT_NUMBER; 1722 ret->u.s_number.number = d_number (di); 1723 } 1724 return ret; 1725 } 1726 1727 /* identifier ::= <(unqualified source code identifier)> */ 1728 1729 static struct demangle_component * 1730 d_identifier (struct d_info *di, int len) 1731 { 1732 const char *name; 1733 1734 name = d_str (di); 1735 1736 if (di->send - name < len) 1737 return NULL; 1738 1739 d_advance (di, len); 1740 1741 /* A Java mangled name may have a trailing '$' if it is a C++ 1742 keyword. This '$' is not included in the length count. We just 1743 ignore the '$'. */ 1744 if ((di->options & DMGL_JAVA) != 0 1745 && d_peek_char (di) == '$') 1746 d_advance (di, 1); 1747 1748 /* Look for something which looks like a gcc encoding of an 1749 anonymous namespace, and replace it with a more user friendly 1750 name. */ 1751 if (len >= (int) ANONYMOUS_NAMESPACE_PREFIX_LEN + 2 1752 && memcmp (name, ANONYMOUS_NAMESPACE_PREFIX, 1753 ANONYMOUS_NAMESPACE_PREFIX_LEN) == 0) 1754 { 1755 const char *s; 1756 1757 s = name + ANONYMOUS_NAMESPACE_PREFIX_LEN; 1758 if ((*s == '.' || *s == '_' || *s == '$') 1759 && s[1] == 'N') 1760 { 1761 di->expansion -= len - sizeof "(anonymous namespace)"; 1762 return d_make_name (di, "(anonymous namespace)", 1763 sizeof "(anonymous namespace)" - 1); 1764 } 1765 } 1766 1767 return d_make_name (di, name, len); 1768 } 1769 1770 /* operator_name ::= many different two character encodings. 1771 ::= cv <type> 1772 ::= v <digit> <source-name> 1773 1774 This list is sorted for binary search. */ 1775 1776 #define NL(s) s, (sizeof s) - 1 1777 1778 CP_STATIC_IF_GLIBCPP_V3 1779 const struct demangle_operator_info cplus_demangle_operators[] = 1780 { 1781 { "aN", NL ("&="), 2 }, 1782 { "aS", NL ("="), 2 }, 1783 { "aa", NL ("&&"), 2 }, 1784 { "ad", NL ("&"), 1 }, 1785 { "an", NL ("&"), 2 }, 1786 { "at", NL ("alignof "), 1 }, 1787 { "az", NL ("alignof "), 1 }, 1788 { "cc", NL ("const_cast"), 2 }, 1789 { "cl", NL ("()"), 2 }, 1790 { "cm", NL (","), 2 }, 1791 { "co", NL ("~"), 1 }, 1792 { "dV", NL ("/="), 2 }, 1793 { "da", NL ("delete[] "), 1 }, 1794 { "dc", NL ("dynamic_cast"), 2 }, 1795 { "de", NL ("*"), 1 }, 1796 { "dl", NL ("delete "), 1 }, 1797 { "ds", NL (".*"), 2 }, 1798 { "dt", NL ("."), 2 }, 1799 { "dv", NL ("/"), 2 }, 1800 { "eO", NL ("^="), 2 }, 1801 { "eo", NL ("^"), 2 }, 1802 { "eq", NL ("=="), 2 }, 1803 { "fL", NL ("..."), 3 }, 1804 { "fR", NL ("..."), 3 }, 1805 { "fl", NL ("..."), 2 }, 1806 { "fr", NL ("..."), 2 }, 1807 { "ge", NL (">="), 2 }, 1808 { "gs", NL ("::"), 1 }, 1809 { "gt", NL (">"), 2 }, 1810 { "ix", NL ("[]"), 2 }, 1811 { "lS", NL ("<<="), 2 }, 1812 { "le", NL ("<="), 2 }, 1813 { "li", NL ("operator\"\" "), 1 }, 1814 { "ls", NL ("<<"), 2 }, 1815 { "lt", NL ("<"), 2 }, 1816 { "mI", NL ("-="), 2 }, 1817 { "mL", NL ("*="), 2 }, 1818 { "mi", NL ("-"), 2 }, 1819 { "ml", NL ("*"), 2 }, 1820 { "mm", NL ("--"), 1 }, 1821 { "na", NL ("new[]"), 3 }, 1822 { "ne", NL ("!="), 2 }, 1823 { "ng", NL ("-"), 1 }, 1824 { "nt", NL ("!"), 1 }, 1825 { "nw", NL ("new"), 3 }, 1826 { "oR", NL ("|="), 2 }, 1827 { "oo", NL ("||"), 2 }, 1828 { "or", NL ("|"), 2 }, 1829 { "pL", NL ("+="), 2 }, 1830 { "pl", NL ("+"), 2 }, 1831 { "pm", NL ("->*"), 2 }, 1832 { "pp", NL ("++"), 1 }, 1833 { "ps", NL ("+"), 1 }, 1834 { "pt", NL ("->"), 2 }, 1835 { "qu", NL ("?"), 3 }, 1836 { "rM", NL ("%="), 2 }, 1837 { "rS", NL (">>="), 2 }, 1838 { "rc", NL ("reinterpret_cast"), 2 }, 1839 { "rm", NL ("%"), 2 }, 1840 { "rs", NL (">>"), 2 }, 1841 { "sP", NL ("sizeof..."), 1 }, 1842 { "sZ", NL ("sizeof..."), 1 }, 1843 { "sc", NL ("static_cast"), 2 }, 1844 { "st", NL ("sizeof "), 1 }, 1845 { "sz", NL ("sizeof "), 1 }, 1846 { "tr", NL ("throw"), 0 }, 1847 { "tw", NL ("throw "), 1 }, 1848 { NULL, NULL, 0, 0 } 1849 }; 1850 1851 static struct demangle_component * 1852 d_operator_name (struct d_info *di) 1853 { 1854 char c1; 1855 char c2; 1856 1857 c1 = d_next_char (di); 1858 c2 = d_next_char (di); 1859 if (c1 == 'v' && IS_DIGIT (c2)) 1860 return d_make_extended_operator (di, c2 - '0', d_source_name (di)); 1861 else if (c1 == 'c' && c2 == 'v') 1862 { 1863 struct demangle_component *type; 1864 int was_conversion = di->is_conversion; 1865 struct demangle_component *res; 1866 1867 di->is_conversion = ! di->is_expression; 1868 type = cplus_demangle_type (di); 1869 if (di->is_conversion) 1870 res = d_make_comp (di, DEMANGLE_COMPONENT_CONVERSION, type, NULL); 1871 else 1872 res = d_make_comp (di, DEMANGLE_COMPONENT_CAST, type, NULL); 1873 di->is_conversion = was_conversion; 1874 return res; 1875 } 1876 else 1877 { 1878 /* LOW is the inclusive lower bound. */ 1879 int low = 0; 1880 /* HIGH is the exclusive upper bound. We subtract one to ignore 1881 the sentinel at the end of the array. */ 1882 int high = ((sizeof (cplus_demangle_operators) 1883 / sizeof (cplus_demangle_operators[0])) 1884 - 1); 1885 1886 while (1) 1887 { 1888 int i; 1889 const struct demangle_operator_info *p; 1890 1891 i = low + (high - low) / 2; 1892 p = cplus_demangle_operators + i; 1893 1894 if (c1 == p->code[0] && c2 == p->code[1]) 1895 return d_make_operator (di, p); 1896 1897 if (c1 < p->code[0] || (c1 == p->code[0] && c2 < p->code[1])) 1898 high = i; 1899 else 1900 low = i + 1; 1901 if (low == high) 1902 return NULL; 1903 } 1904 } 1905 } 1906 1907 static struct demangle_component * 1908 d_make_character (struct d_info *di, int c) 1909 { 1910 struct demangle_component *p; 1911 p = d_make_empty (di); 1912 if (p != NULL) 1913 { 1914 p->type = DEMANGLE_COMPONENT_CHARACTER; 1915 p->u.s_character.character = c; 1916 } 1917 return p; 1918 } 1919 1920 static struct demangle_component * 1921 d_java_resource (struct d_info *di) 1922 { 1923 struct demangle_component *p = NULL; 1924 struct demangle_component *next = NULL; 1925 int len, i; 1926 char c; 1927 const char *str; 1928 1929 len = d_number (di); 1930 if (len <= 1) 1931 return NULL; 1932 1933 /* Eat the leading '_'. */ 1934 if (d_next_char (di) != '_') 1935 return NULL; 1936 len--; 1937 1938 str = d_str (di); 1939 i = 0; 1940 1941 while (len > 0) 1942 { 1943 c = str[i]; 1944 if (!c) 1945 return NULL; 1946 1947 /* Each chunk is either a '$' escape... */ 1948 if (c == '$') 1949 { 1950 i++; 1951 switch (str[i++]) 1952 { 1953 case 'S': 1954 c = '/'; 1955 break; 1956 case '_': 1957 c = '.'; 1958 break; 1959 case '$': 1960 c = '$'; 1961 break; 1962 default: 1963 return NULL; 1964 } 1965 next = d_make_character (di, c); 1966 d_advance (di, i); 1967 str = d_str (di); 1968 len -= i; 1969 i = 0; 1970 if (next == NULL) 1971 return NULL; 1972 } 1973 /* ... or a sequence of characters. */ 1974 else 1975 { 1976 while (i < len && str[i] && str[i] != '$') 1977 i++; 1978 1979 next = d_make_name (di, str, i); 1980 d_advance (di, i); 1981 str = d_str (di); 1982 len -= i; 1983 i = 0; 1984 if (next == NULL) 1985 return NULL; 1986 } 1987 1988 if (p == NULL) 1989 p = next; 1990 else 1991 { 1992 p = d_make_comp (di, DEMANGLE_COMPONENT_COMPOUND_NAME, p, next); 1993 if (p == NULL) 1994 return NULL; 1995 } 1996 } 1997 1998 p = d_make_comp (di, DEMANGLE_COMPONENT_JAVA_RESOURCE, p, NULL); 1999 2000 return p; 2001 } 2002 2003 /* <special-name> ::= TV <type> 2004 ::= TT <type> 2005 ::= TI <type> 2006 ::= TS <type> 2007 ::= GV <(object) name> 2008 ::= T <call-offset> <(base) encoding> 2009 ::= Tc <call-offset> <call-offset> <(base) encoding> 2010 Also g++ extensions: 2011 ::= TC <type> <(offset) number> _ <(base) type> 2012 ::= TF <type> 2013 ::= TJ <type> 2014 ::= GR <name> 2015 ::= GA <encoding> 2016 ::= Gr <resource name> 2017 ::= GTt <encoding> 2018 ::= GTn <encoding> 2019 */ 2020 2021 static struct demangle_component * 2022 d_special_name (struct d_info *di) 2023 { 2024 di->expansion += 20; 2025 if (d_check_char (di, 'T')) 2026 { 2027 switch (d_next_char (di)) 2028 { 2029 case 'V': 2030 di->expansion -= 5; 2031 return d_make_comp (di, DEMANGLE_COMPONENT_VTABLE, 2032 cplus_demangle_type (di), NULL); 2033 case 'T': 2034 di->expansion -= 10; 2035 return d_make_comp (di, DEMANGLE_COMPONENT_VTT, 2036 cplus_demangle_type (di), NULL); 2037 case 'I': 2038 return d_make_comp (di, DEMANGLE_COMPONENT_TYPEINFO, 2039 cplus_demangle_type (di), NULL); 2040 case 'S': 2041 return d_make_comp (di, DEMANGLE_COMPONENT_TYPEINFO_NAME, 2042 cplus_demangle_type (di), NULL); 2043 2044 case 'h': 2045 if (! d_call_offset (di, 'h')) 2046 return NULL; 2047 return d_make_comp (di, DEMANGLE_COMPONENT_THUNK, 2048 d_encoding (di, 0), NULL); 2049 2050 case 'v': 2051 if (! d_call_offset (di, 'v')) 2052 return NULL; 2053 return d_make_comp (di, DEMANGLE_COMPONENT_VIRTUAL_THUNK, 2054 d_encoding (di, 0), NULL); 2055 2056 case 'c': 2057 if (! d_call_offset (di, '\0')) 2058 return NULL; 2059 if (! d_call_offset (di, '\0')) 2060 return NULL; 2061 return d_make_comp (di, DEMANGLE_COMPONENT_COVARIANT_THUNK, 2062 d_encoding (di, 0), NULL); 2063 2064 case 'C': 2065 { 2066 struct demangle_component *derived_type; 2067 int offset; 2068 struct demangle_component *base_type; 2069 2070 derived_type = cplus_demangle_type (di); 2071 offset = d_number (di); 2072 if (offset < 0) 2073 return NULL; 2074 if (! d_check_char (di, '_')) 2075 return NULL; 2076 base_type = cplus_demangle_type (di); 2077 /* We don't display the offset. FIXME: We should display 2078 it in verbose mode. */ 2079 di->expansion += 5; 2080 return d_make_comp (di, DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE, 2081 base_type, derived_type); 2082 } 2083 2084 case 'F': 2085 return d_make_comp (di, DEMANGLE_COMPONENT_TYPEINFO_FN, 2086 cplus_demangle_type (di), NULL); 2087 case 'J': 2088 return d_make_comp (di, DEMANGLE_COMPONENT_JAVA_CLASS, 2089 cplus_demangle_type (di), NULL); 2090 2091 case 'H': 2092 return d_make_comp (di, DEMANGLE_COMPONENT_TLS_INIT, 2093 d_name (di), NULL); 2094 2095 case 'W': 2096 return d_make_comp (di, DEMANGLE_COMPONENT_TLS_WRAPPER, 2097 d_name (di), NULL); 2098 2099 default: 2100 return NULL; 2101 } 2102 } 2103 else if (d_check_char (di, 'G')) 2104 { 2105 switch (d_next_char (di)) 2106 { 2107 case 'V': 2108 return d_make_comp (di, DEMANGLE_COMPONENT_GUARD, d_name (di), NULL); 2109 2110 case 'R': 2111 { 2112 struct demangle_component *name = d_name (di); 2113 return d_make_comp (di, DEMANGLE_COMPONENT_REFTEMP, name, 2114 d_number_component (di)); 2115 } 2116 2117 case 'A': 2118 return d_make_comp (di, DEMANGLE_COMPONENT_HIDDEN_ALIAS, 2119 d_encoding (di, 0), NULL); 2120 2121 case 'T': 2122 switch (d_next_char (di)) 2123 { 2124 case 'n': 2125 return d_make_comp (di, DEMANGLE_COMPONENT_NONTRANSACTION_CLONE, 2126 d_encoding (di, 0), NULL); 2127 default: 2128 /* ??? The proposal is that other letters (such as 'h') stand 2129 for different variants of transaction cloning, such as 2130 compiling directly for hardware transaction support. But 2131 they still should all be transactional clones of some sort 2132 so go ahead and call them that. */ 2133 case 't': 2134 return d_make_comp (di, DEMANGLE_COMPONENT_TRANSACTION_CLONE, 2135 d_encoding (di, 0), NULL); 2136 } 2137 2138 case 'r': 2139 return d_java_resource (di); 2140 2141 default: 2142 return NULL; 2143 } 2144 } 2145 else 2146 return NULL; 2147 } 2148 2149 /* <call-offset> ::= h <nv-offset> _ 2150 ::= v <v-offset> _ 2151 2152 <nv-offset> ::= <(offset) number> 2153 2154 <v-offset> ::= <(offset) number> _ <(virtual offset) number> 2155 2156 The C parameter, if not '\0', is a character we just read which is 2157 the start of the <call-offset>. 2158 2159 We don't display the offset information anywhere. FIXME: We should 2160 display it in verbose mode. */ 2161 2162 static int 2163 d_call_offset (struct d_info *di, int c) 2164 { 2165 if (c == '\0') 2166 c = d_next_char (di); 2167 2168 if (c == 'h') 2169 d_number (di); 2170 else if (c == 'v') 2171 { 2172 d_number (di); 2173 if (! d_check_char (di, '_')) 2174 return 0; 2175 d_number (di); 2176 } 2177 else 2178 return 0; 2179 2180 if (! d_check_char (di, '_')) 2181 return 0; 2182 2183 return 1; 2184 } 2185 2186 /* <ctor-dtor-name> ::= C1 2187 ::= C2 2188 ::= C3 2189 ::= D0 2190 ::= D1 2191 ::= D2 2192 */ 2193 2194 static struct demangle_component * 2195 d_ctor_dtor_name (struct d_info *di) 2196 { 2197 if (di->last_name != NULL) 2198 { 2199 if (di->last_name->type == DEMANGLE_COMPONENT_NAME) 2200 di->expansion += di->last_name->u.s_name.len; 2201 else if (di->last_name->type == DEMANGLE_COMPONENT_SUB_STD) 2202 di->expansion += di->last_name->u.s_string.len; 2203 } 2204 switch (d_peek_char (di)) 2205 { 2206 case 'C': 2207 { 2208 enum gnu_v3_ctor_kinds kind; 2209 int inheriting = 0; 2210 2211 if (d_peek_next_char (di) == 'I') 2212 { 2213 inheriting = 1; 2214 d_advance (di, 1); 2215 } 2216 2217 switch (d_peek_next_char (di)) 2218 { 2219 case '1': 2220 kind = gnu_v3_complete_object_ctor; 2221 break; 2222 case '2': 2223 kind = gnu_v3_base_object_ctor; 2224 break; 2225 case '3': 2226 kind = gnu_v3_complete_object_allocating_ctor; 2227 break; 2228 case '4': 2229 kind = gnu_v3_unified_ctor; 2230 break; 2231 case '5': 2232 kind = gnu_v3_object_ctor_group; 2233 break; 2234 default: 2235 return NULL; 2236 } 2237 2238 d_advance (di, 2); 2239 2240 if (inheriting) 2241 cplus_demangle_type (di); 2242 2243 return d_make_ctor (di, kind, di->last_name); 2244 } 2245 2246 case 'D': 2247 { 2248 enum gnu_v3_dtor_kinds kind; 2249 2250 switch (d_peek_next_char (di)) 2251 { 2252 case '0': 2253 kind = gnu_v3_deleting_dtor; 2254 break; 2255 case '1': 2256 kind = gnu_v3_complete_object_dtor; 2257 break; 2258 case '2': 2259 kind = gnu_v3_base_object_dtor; 2260 break; 2261 /* digit '3' is not used */ 2262 case '4': 2263 kind = gnu_v3_unified_dtor; 2264 break; 2265 case '5': 2266 kind = gnu_v3_object_dtor_group; 2267 break; 2268 default: 2269 return NULL; 2270 } 2271 d_advance (di, 2); 2272 return d_make_dtor (di, kind, di->last_name); 2273 } 2274 2275 default: 2276 return NULL; 2277 } 2278 } 2279 2280 /* True iff we're looking at an order-insensitive type-qualifier, including 2281 function-type-qualifiers. */ 2282 2283 static int 2284 next_is_type_qual (struct d_info *di) 2285 { 2286 char peek = d_peek_char (di); 2287 if (peek == 'r' || peek == 'V' || peek == 'K') 2288 return 1; 2289 if (peek == 'D') 2290 { 2291 peek = d_peek_next_char (di); 2292 if (peek == 'x' || peek == 'o' || peek == 'O' || peek == 'w') 2293 return 1; 2294 } 2295 return 0; 2296 } 2297 2298 /* <type> ::= <builtin-type> 2299 ::= <function-type> 2300 ::= <class-enum-type> 2301 ::= <array-type> 2302 ::= <pointer-to-member-type> 2303 ::= <template-param> 2304 ::= <template-template-param> <template-args> 2305 ::= <substitution> 2306 ::= <CV-qualifiers> <type> 2307 ::= P <type> 2308 ::= R <type> 2309 ::= O <type> (C++0x) 2310 ::= C <type> 2311 ::= G <type> 2312 ::= U <source-name> <type> 2313 2314 <builtin-type> ::= various one letter codes 2315 ::= u <source-name> 2316 */ 2317 2318 CP_STATIC_IF_GLIBCPP_V3 2319 const struct demangle_builtin_type_info 2320 cplus_demangle_builtin_types[D_BUILTIN_TYPE_COUNT] = 2321 { 2322 /* a */ { NL ("signed char"), NL ("signed char"), D_PRINT_DEFAULT }, 2323 /* b */ { NL ("bool"), NL ("boolean"), D_PRINT_BOOL }, 2324 /* c */ { NL ("char"), NL ("byte"), D_PRINT_DEFAULT }, 2325 /* d */ { NL ("double"), NL ("double"), D_PRINT_FLOAT }, 2326 /* e */ { NL ("long double"), NL ("long double"), D_PRINT_FLOAT }, 2327 /* f */ { NL ("float"), NL ("float"), D_PRINT_FLOAT }, 2328 /* g */ { NL ("__float128"), NL ("__float128"), D_PRINT_FLOAT }, 2329 /* h */ { NL ("unsigned char"), NL ("unsigned char"), D_PRINT_DEFAULT }, 2330 /* i */ { NL ("int"), NL ("int"), D_PRINT_INT }, 2331 /* j */ { NL ("unsigned int"), NL ("unsigned"), D_PRINT_UNSIGNED }, 2332 /* k */ { NULL, 0, NULL, 0, D_PRINT_DEFAULT }, 2333 /* l */ { NL ("long"), NL ("long"), D_PRINT_LONG }, 2334 /* m */ { NL ("unsigned long"), NL ("unsigned long"), D_PRINT_UNSIGNED_LONG }, 2335 /* n */ { NL ("__int128"), NL ("__int128"), D_PRINT_DEFAULT }, 2336 /* o */ { NL ("unsigned __int128"), NL ("unsigned __int128"), 2337 D_PRINT_DEFAULT }, 2338 /* p */ { NULL, 0, NULL, 0, D_PRINT_DEFAULT }, 2339 /* q */ { NULL, 0, NULL, 0, D_PRINT_DEFAULT }, 2340 /* r */ { NULL, 0, NULL, 0, D_PRINT_DEFAULT }, 2341 /* s */ { NL ("short"), NL ("short"), D_PRINT_DEFAULT }, 2342 /* t */ { NL ("unsigned short"), NL ("unsigned short"), D_PRINT_DEFAULT }, 2343 /* u */ { NULL, 0, NULL, 0, D_PRINT_DEFAULT }, 2344 /* v */ { NL ("void"), NL ("void"), D_PRINT_VOID }, 2345 /* w */ { NL ("wchar_t"), NL ("char"), D_PRINT_DEFAULT }, 2346 /* x */ { NL ("long long"), NL ("long"), D_PRINT_LONG_LONG }, 2347 /* y */ { NL ("unsigned long long"), NL ("unsigned long long"), 2348 D_PRINT_UNSIGNED_LONG_LONG }, 2349 /* z */ { NL ("..."), NL ("..."), D_PRINT_DEFAULT }, 2350 /* 26 */ { NL ("decimal32"), NL ("decimal32"), D_PRINT_DEFAULT }, 2351 /* 27 */ { NL ("decimal64"), NL ("decimal64"), D_PRINT_DEFAULT }, 2352 /* 28 */ { NL ("decimal128"), NL ("decimal128"), D_PRINT_DEFAULT }, 2353 /* 29 */ { NL ("half"), NL ("half"), D_PRINT_FLOAT }, 2354 /* 30 */ { NL ("char16_t"), NL ("char16_t"), D_PRINT_DEFAULT }, 2355 /* 31 */ { NL ("char32_t"), NL ("char32_t"), D_PRINT_DEFAULT }, 2356 /* 32 */ { NL ("decltype(nullptr)"), NL ("decltype(nullptr)"), 2357 D_PRINT_DEFAULT }, 2358 }; 2359 2360 CP_STATIC_IF_GLIBCPP_V3 2361 struct demangle_component * 2362 cplus_demangle_type (struct d_info *di) 2363 { 2364 char peek; 2365 struct demangle_component *ret = NULL; 2366 int can_subst; 2367 2368 /* The ABI specifies that when CV-qualifiers are used, the base type 2369 is substitutable, and the fully qualified type is substitutable, 2370 but the base type with a strict subset of the CV-qualifiers is 2371 not substitutable. The natural recursive implementation of the 2372 CV-qualifiers would cause subsets to be substitutable, so instead 2373 we pull them all off now. 2374 2375 FIXME: The ABI says that order-insensitive vendor qualifiers 2376 should be handled in the same way, but we have no way to tell 2377 which vendor qualifiers are order-insensitive and which are 2378 order-sensitive. So we just assume that they are all 2379 order-sensitive. g++ 3.4 supports only one vendor qualifier, 2380 __vector, and it treats it as order-sensitive when mangling 2381 names. */ 2382 2383 if (next_is_type_qual (di)) 2384 { 2385 struct demangle_component **pret; 2386 2387 pret = d_cv_qualifiers (di, &ret, 0); 2388 if (pret == NULL) 2389 return NULL; 2390 if (d_peek_char (di) == 'F') 2391 { 2392 /* cv-qualifiers before a function type apply to 'this', 2393 so avoid adding the unqualified function type to 2394 the substitution list. */ 2395 *pret = d_function_type (di); 2396 } 2397 else 2398 *pret = cplus_demangle_type (di); 2399 if (!*pret) 2400 return NULL; 2401 if ((*pret)->type == DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS 2402 || (*pret)->type == DEMANGLE_COMPONENT_REFERENCE_THIS) 2403 { 2404 /* Move the ref-qualifier outside the cv-qualifiers so that 2405 they are printed in the right order. */ 2406 struct demangle_component *fn = d_left (*pret); 2407 d_left (*pret) = ret; 2408 ret = *pret; 2409 *pret = fn; 2410 } 2411 if (! d_add_substitution (di, ret)) 2412 return NULL; 2413 return ret; 2414 } 2415 2416 can_subst = 1; 2417 2418 peek = d_peek_char (di); 2419 switch (peek) 2420 { 2421 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': case 'g': 2422 case 'h': case 'i': case 'j': case 'l': case 'm': case 'n': 2423 case 'o': case 's': case 't': 2424 case 'v': case 'w': case 'x': case 'y': case 'z': 2425 ret = d_make_builtin_type (di, 2426 &cplus_demangle_builtin_types[peek - 'a']); 2427 di->expansion += ret->u.s_builtin.type->len; 2428 can_subst = 0; 2429 d_advance (di, 1); 2430 break; 2431 2432 case 'u': 2433 d_advance (di, 1); 2434 ret = d_make_comp (di, DEMANGLE_COMPONENT_VENDOR_TYPE, 2435 d_source_name (di), NULL); 2436 break; 2437 2438 case 'F': 2439 ret = d_function_type (di); 2440 break; 2441 2442 case '0': case '1': case '2': case '3': case '4': 2443 case '5': case '6': case '7': case '8': case '9': 2444 case 'N': 2445 case 'Z': 2446 ret = d_class_enum_type (di); 2447 break; 2448 2449 case 'A': 2450 ret = d_array_type (di); 2451 break; 2452 2453 case 'M': 2454 ret = d_pointer_to_member_type (di); 2455 break; 2456 2457 case 'T': 2458 ret = d_template_param (di); 2459 if (d_peek_char (di) == 'I') 2460 { 2461 /* This may be <template-template-param> <template-args>. 2462 If this is the type for a conversion operator, we can 2463 have a <template-template-param> here only by following 2464 a derivation like this: 2465 2466 <nested-name> 2467 -> <template-prefix> <template-args> 2468 -> <prefix> <template-unqualified-name> <template-args> 2469 -> <unqualified-name> <template-unqualified-name> <template-args> 2470 -> <source-name> <template-unqualified-name> <template-args> 2471 -> <source-name> <operator-name> <template-args> 2472 -> <source-name> cv <type> <template-args> 2473 -> <source-name> cv <template-template-param> <template-args> <template-args> 2474 2475 where the <template-args> is followed by another. 2476 Otherwise, we must have a derivation like this: 2477 2478 <nested-name> 2479 -> <template-prefix> <template-args> 2480 -> <prefix> <template-unqualified-name> <template-args> 2481 -> <unqualified-name> <template-unqualified-name> <template-args> 2482 -> <source-name> <template-unqualified-name> <template-args> 2483 -> <source-name> <operator-name> <template-args> 2484 -> <source-name> cv <type> <template-args> 2485 -> <source-name> cv <template-param> <template-args> 2486 2487 where we need to leave the <template-args> to be processed 2488 by d_prefix (following the <template-prefix>). 2489 2490 The <template-template-param> part is a substitution 2491 candidate. */ 2492 if (! di->is_conversion) 2493 { 2494 if (! d_add_substitution (di, ret)) 2495 return NULL; 2496 ret = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, ret, 2497 d_template_args (di)); 2498 } 2499 else 2500 { 2501 struct demangle_component *args; 2502 struct d_info_checkpoint checkpoint; 2503 2504 d_checkpoint (di, &checkpoint); 2505 args = d_template_args (di); 2506 if (d_peek_char (di) == 'I') 2507 { 2508 if (! d_add_substitution (di, ret)) 2509 return NULL; 2510 ret = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, ret, 2511 args); 2512 } 2513 else 2514 d_backtrack (di, &checkpoint); 2515 } 2516 } 2517 break; 2518 2519 case 'S': 2520 /* If this is a special substitution, then it is the start of 2521 <class-enum-type>. */ 2522 { 2523 char peek_next; 2524 2525 peek_next = d_peek_next_char (di); 2526 if (IS_DIGIT (peek_next) 2527 || peek_next == '_' 2528 || IS_UPPER (peek_next)) 2529 { 2530 ret = d_substitution (di, 0); 2531 /* The substituted name may have been a template name and 2532 may be followed by tepmlate args. */ 2533 if (d_peek_char (di) == 'I') 2534 ret = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, ret, 2535 d_template_args (di)); 2536 else 2537 can_subst = 0; 2538 } 2539 else 2540 { 2541 ret = d_class_enum_type (di); 2542 /* If the substitution was a complete type, then it is not 2543 a new substitution candidate. However, if the 2544 substitution was followed by template arguments, then 2545 the whole thing is a substitution candidate. */ 2546 if (ret != NULL && ret->type == DEMANGLE_COMPONENT_SUB_STD) 2547 can_subst = 0; 2548 } 2549 } 2550 break; 2551 2552 case 'O': 2553 d_advance (di, 1); 2554 ret = d_make_comp (di, DEMANGLE_COMPONENT_RVALUE_REFERENCE, 2555 cplus_demangle_type (di), NULL); 2556 break; 2557 2558 case 'P': 2559 d_advance (di, 1); 2560 ret = d_make_comp (di, DEMANGLE_COMPONENT_POINTER, 2561 cplus_demangle_type (di), NULL); 2562 break; 2563 2564 case 'R': 2565 d_advance (di, 1); 2566 ret = d_make_comp (di, DEMANGLE_COMPONENT_REFERENCE, 2567 cplus_demangle_type (di), NULL); 2568 break; 2569 2570 case 'C': 2571 d_advance (di, 1); 2572 ret = d_make_comp (di, DEMANGLE_COMPONENT_COMPLEX, 2573 cplus_demangle_type (di), NULL); 2574 break; 2575 2576 case 'G': 2577 d_advance (di, 1); 2578 ret = d_make_comp (di, DEMANGLE_COMPONENT_IMAGINARY, 2579 cplus_demangle_type (di), NULL); 2580 break; 2581 2582 case 'U': 2583 d_advance (di, 1); 2584 ret = d_source_name (di); 2585 if (d_peek_char (di) == 'I') 2586 ret = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, ret, 2587 d_template_args (di)); 2588 ret = d_make_comp (di, DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL, 2589 cplus_demangle_type (di), ret); 2590 break; 2591 2592 case 'D': 2593 can_subst = 0; 2594 d_advance (di, 1); 2595 peek = d_next_char (di); 2596 switch (peek) 2597 { 2598 case 'T': 2599 case 't': 2600 /* decltype (expression) */ 2601 ret = d_make_comp (di, DEMANGLE_COMPONENT_DECLTYPE, 2602 d_expression (di), NULL); 2603 if (ret && d_next_char (di) != 'E') 2604 ret = NULL; 2605 can_subst = 1; 2606 break; 2607 2608 case 'p': 2609 /* Pack expansion. */ 2610 ret = d_make_comp (di, DEMANGLE_COMPONENT_PACK_EXPANSION, 2611 cplus_demangle_type (di), NULL); 2612 can_subst = 1; 2613 break; 2614 2615 case 'a': 2616 /* auto */ 2617 ret = d_make_name (di, "auto", 4); 2618 break; 2619 case 'c': 2620 /* decltype(auto) */ 2621 ret = d_make_name (di, "decltype(auto)", 14); 2622 break; 2623 2624 case 'f': 2625 /* 32-bit decimal floating point */ 2626 ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[26]); 2627 di->expansion += ret->u.s_builtin.type->len; 2628 break; 2629 case 'd': 2630 /* 64-bit DFP */ 2631 ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[27]); 2632 di->expansion += ret->u.s_builtin.type->len; 2633 break; 2634 case 'e': 2635 /* 128-bit DFP */ 2636 ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[28]); 2637 di->expansion += ret->u.s_builtin.type->len; 2638 break; 2639 case 'h': 2640 /* 16-bit half-precision FP */ 2641 ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[29]); 2642 di->expansion += ret->u.s_builtin.type->len; 2643 break; 2644 case 's': 2645 /* char16_t */ 2646 ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[30]); 2647 di->expansion += ret->u.s_builtin.type->len; 2648 break; 2649 case 'i': 2650 /* char32_t */ 2651 ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[31]); 2652 di->expansion += ret->u.s_builtin.type->len; 2653 break; 2654 2655 case 'F': 2656 /* Fixed point types. DF<int bits><length><fract bits><sat> */ 2657 ret = d_make_empty (di); 2658 ret->type = DEMANGLE_COMPONENT_FIXED_TYPE; 2659 if ((ret->u.s_fixed.accum = IS_DIGIT (d_peek_char (di)))) 2660 /* For demangling we don't care about the bits. */ 2661 d_number (di); 2662 ret->u.s_fixed.length = cplus_demangle_type (di); 2663 if (ret->u.s_fixed.length == NULL) 2664 return NULL; 2665 d_number (di); 2666 peek = d_next_char (di); 2667 ret->u.s_fixed.sat = (peek == 's'); 2668 break; 2669 2670 case 'v': 2671 ret = d_vector_type (di); 2672 can_subst = 1; 2673 break; 2674 2675 case 'n': 2676 /* decltype(nullptr) */ 2677 ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[32]); 2678 di->expansion += ret->u.s_builtin.type->len; 2679 break; 2680 2681 default: 2682 return NULL; 2683 } 2684 break; 2685 2686 default: 2687 return NULL; 2688 } 2689 2690 if (can_subst) 2691 { 2692 if (! d_add_substitution (di, ret)) 2693 return NULL; 2694 } 2695 2696 return ret; 2697 } 2698 2699 /* <CV-qualifiers> ::= [r] [V] [K] [Dx] */ 2700 2701 static struct demangle_component ** 2702 d_cv_qualifiers (struct d_info *di, 2703 struct demangle_component **pret, int member_fn) 2704 { 2705 struct demangle_component **pstart; 2706 char peek; 2707 2708 pstart = pret; 2709 peek = d_peek_char (di); 2710 while (next_is_type_qual (di)) 2711 { 2712 enum demangle_component_type t; 2713 struct demangle_component *right = NULL; 2714 2715 d_advance (di, 1); 2716 if (peek == 'r') 2717 { 2718 t = (member_fn 2719 ? DEMANGLE_COMPONENT_RESTRICT_THIS 2720 : DEMANGLE_COMPONENT_RESTRICT); 2721 di->expansion += sizeof "restrict"; 2722 } 2723 else if (peek == 'V') 2724 { 2725 t = (member_fn 2726 ? DEMANGLE_COMPONENT_VOLATILE_THIS 2727 : DEMANGLE_COMPONENT_VOLATILE); 2728 di->expansion += sizeof "volatile"; 2729 } 2730 else if (peek == 'K') 2731 { 2732 t = (member_fn 2733 ? DEMANGLE_COMPONENT_CONST_THIS 2734 : DEMANGLE_COMPONENT_CONST); 2735 di->expansion += sizeof "const"; 2736 } 2737 else 2738 { 2739 peek = d_next_char (di); 2740 if (peek == 'x') 2741 { 2742 t = DEMANGLE_COMPONENT_TRANSACTION_SAFE; 2743 di->expansion += sizeof "transaction_safe"; 2744 } 2745 else if (peek == 'o' 2746 || peek == 'O') 2747 { 2748 t = DEMANGLE_COMPONENT_NOEXCEPT; 2749 di->expansion += sizeof "noexcept"; 2750 if (peek == 'O') 2751 { 2752 right = d_expression (di); 2753 if (right == NULL) 2754 return NULL; 2755 if (! d_check_char (di, 'E')) 2756 return NULL; 2757 } 2758 } 2759 else if (peek == 'w') 2760 { 2761 t = DEMANGLE_COMPONENT_THROW_SPEC; 2762 di->expansion += sizeof "throw"; 2763 right = d_parmlist (di); 2764 if (right == NULL) 2765 return NULL; 2766 if (! d_check_char (di, 'E')) 2767 return NULL; 2768 } 2769 else 2770 return NULL; 2771 } 2772 2773 *pret = d_make_comp (di, t, NULL, right); 2774 if (*pret == NULL) 2775 return NULL; 2776 pret = &d_left (*pret); 2777 2778 peek = d_peek_char (di); 2779 } 2780 2781 if (!member_fn && peek == 'F') 2782 { 2783 while (pstart != pret) 2784 { 2785 switch ((*pstart)->type) 2786 { 2787 case DEMANGLE_COMPONENT_RESTRICT: 2788 (*pstart)->type = DEMANGLE_COMPONENT_RESTRICT_THIS; 2789 break; 2790 case DEMANGLE_COMPONENT_VOLATILE: 2791 (*pstart)->type = DEMANGLE_COMPONENT_VOLATILE_THIS; 2792 break; 2793 case DEMANGLE_COMPONENT_CONST: 2794 (*pstart)->type = DEMANGLE_COMPONENT_CONST_THIS; 2795 break; 2796 default: 2797 break; 2798 } 2799 pstart = &d_left (*pstart); 2800 } 2801 } 2802 2803 return pret; 2804 } 2805 2806 /* <ref-qualifier> ::= R 2807 ::= O */ 2808 2809 static struct demangle_component * 2810 d_ref_qualifier (struct d_info *di, struct demangle_component *sub) 2811 { 2812 struct demangle_component *ret = sub; 2813 char peek; 2814 2815 peek = d_peek_char (di); 2816 if (peek == 'R' || peek == 'O') 2817 { 2818 enum demangle_component_type t; 2819 if (peek == 'R') 2820 { 2821 t = DEMANGLE_COMPONENT_REFERENCE_THIS; 2822 di->expansion += sizeof "&"; 2823 } 2824 else 2825 { 2826 t = DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS; 2827 di->expansion += sizeof "&&"; 2828 } 2829 d_advance (di, 1); 2830 2831 ret = d_make_comp (di, t, ret, NULL); 2832 } 2833 2834 return ret; 2835 } 2836 2837 /* <function-type> ::= F [Y] <bare-function-type> [<ref-qualifier>] [T] E */ 2838 2839 static struct demangle_component * 2840 d_function_type (struct d_info *di) 2841 { 2842 struct demangle_component *ret; 2843 2844 if (! d_check_char (di, 'F')) 2845 return NULL; 2846 if (d_peek_char (di) == 'Y') 2847 { 2848 /* Function has C linkage. We don't print this information. 2849 FIXME: We should print it in verbose mode. */ 2850 d_advance (di, 1); 2851 } 2852 ret = d_bare_function_type (di, 1); 2853 ret = d_ref_qualifier (di, ret); 2854 2855 if (! d_check_char (di, 'E')) 2856 return NULL; 2857 return ret; 2858 } 2859 2860 /* <type>+ */ 2861 2862 static struct demangle_component * 2863 d_parmlist (struct d_info *di) 2864 { 2865 struct demangle_component *tl; 2866 struct demangle_component **ptl; 2867 2868 tl = NULL; 2869 ptl = &tl; 2870 while (1) 2871 { 2872 struct demangle_component *type; 2873 2874 char peek = d_peek_char (di); 2875 if (peek == '\0' || peek == 'E' || peek == '.') 2876 break; 2877 if ((peek == 'R' || peek == 'O') 2878 && d_peek_next_char (di) == 'E') 2879 /* Function ref-qualifier, not a ref prefix for a parameter type. */ 2880 break; 2881 type = cplus_demangle_type (di); 2882 if (type == NULL) 2883 return NULL; 2884 *ptl = d_make_comp (di, DEMANGLE_COMPONENT_ARGLIST, type, NULL); 2885 if (*ptl == NULL) 2886 return NULL; 2887 ptl = &d_right (*ptl); 2888 } 2889 2890 /* There should be at least one parameter type besides the optional 2891 return type. A function which takes no arguments will have a 2892 single parameter type void. */ 2893 if (tl == NULL) 2894 return NULL; 2895 2896 /* If we have a single parameter type void, omit it. */ 2897 if (d_right (tl) == NULL 2898 && d_left (tl)->type == DEMANGLE_COMPONENT_BUILTIN_TYPE 2899 && d_left (tl)->u.s_builtin.type->print == D_PRINT_VOID) 2900 { 2901 di->expansion -= d_left (tl)->u.s_builtin.type->len; 2902 d_left (tl) = NULL; 2903 } 2904 2905 return tl; 2906 } 2907 2908 /* <bare-function-type> ::= [J]<type>+ */ 2909 2910 static struct demangle_component * 2911 d_bare_function_type (struct d_info *di, int has_return_tipe) 2912 { 2913 struct demangle_component *return_type; 2914 struct demangle_component *tl; 2915 char peek; 2916 2917 /* Detect special qualifier indicating that the first argument 2918 is the return type. */ 2919 peek = d_peek_char (di); 2920 if (peek == 'J') 2921 { 2922 d_advance (di, 1); 2923 has_return_tipe = 1; 2924 } 2925 2926 if (has_return_tipe) 2927 { 2928 return_type = cplus_demangle_type (di); 2929 if (return_type == NULL) 2930 return NULL; 2931 } 2932 else 2933 return_type = NULL; 2934 2935 tl = d_parmlist (di); 2936 if (tl == NULL) 2937 return NULL; 2938 2939 return d_make_comp (di, DEMANGLE_COMPONENT_FUNCTION_TYPE, 2940 return_type, tl); 2941 } 2942 2943 /* <class-enum-type> ::= <name> */ 2944 2945 static struct demangle_component * 2946 d_class_enum_type (struct d_info *di) 2947 { 2948 return d_name (di); 2949 } 2950 2951 /* <array-type> ::= A <(positive dimension) number> _ <(element) type> 2952 ::= A [<(dimension) expression>] _ <(element) type> 2953 */ 2954 2955 static struct demangle_component * 2956 d_array_type (struct d_info *di) 2957 { 2958 char peek; 2959 struct demangle_component *dim; 2960 2961 if (! d_check_char (di, 'A')) 2962 return NULL; 2963 2964 peek = d_peek_char (di); 2965 if (peek == '_') 2966 dim = NULL; 2967 else if (IS_DIGIT (peek)) 2968 { 2969 const char *s; 2970 2971 s = d_str (di); 2972 do 2973 { 2974 d_advance (di, 1); 2975 peek = d_peek_char (di); 2976 } 2977 while (IS_DIGIT (peek)); 2978 dim = d_make_name (di, s, d_str (di) - s); 2979 if (dim == NULL) 2980 return NULL; 2981 } 2982 else 2983 { 2984 dim = d_expression (di); 2985 if (dim == NULL) 2986 return NULL; 2987 } 2988 2989 if (! d_check_char (di, '_')) 2990 return NULL; 2991 2992 return d_make_comp (di, DEMANGLE_COMPONENT_ARRAY_TYPE, dim, 2993 cplus_demangle_type (di)); 2994 } 2995 2996 /* <vector-type> ::= Dv <number> _ <type> 2997 ::= Dv _ <expression> _ <type> */ 2998 2999 static struct demangle_component * 3000 d_vector_type (struct d_info *di) 3001 { 3002 char peek; 3003 struct demangle_component *dim; 3004 3005 peek = d_peek_char (di); 3006 if (peek == '_') 3007 { 3008 d_advance (di, 1); 3009 dim = d_expression (di); 3010 } 3011 else 3012 dim = d_number_component (di); 3013 3014 if (dim == NULL) 3015 return NULL; 3016 3017 if (! d_check_char (di, '_')) 3018 return NULL; 3019 3020 return d_make_comp (di, DEMANGLE_COMPONENT_VECTOR_TYPE, dim, 3021 cplus_demangle_type (di)); 3022 } 3023 3024 /* <pointer-to-member-type> ::= M <(class) type> <(member) type> */ 3025 3026 static struct demangle_component * 3027 d_pointer_to_member_type (struct d_info *di) 3028 { 3029 struct demangle_component *cl; 3030 struct demangle_component *mem; 3031 3032 if (! d_check_char (di, 'M')) 3033 return NULL; 3034 3035 cl = cplus_demangle_type (di); 3036 if (cl == NULL) 3037 return NULL; 3038 3039 /* The ABI says, "The type of a non-static member function is considered 3040 to be different, for the purposes of substitution, from the type of a 3041 namespace-scope or static member function whose type appears 3042 similar. The types of two non-static member functions are considered 3043 to be different, for the purposes of substitution, if the functions 3044 are members of different classes. In other words, for the purposes of 3045 substitution, the class of which the function is a member is 3046 considered part of the type of function." 3047 3048 For a pointer to member function, this call to cplus_demangle_type 3049 will end up adding a (possibly qualified) non-member function type to 3050 the substitution table, which is not correct; however, the member 3051 function type will never be used in a substitution, so putting the 3052 wrong type in the substitution table is harmless. */ 3053 3054 mem = cplus_demangle_type (di); 3055 if (mem == NULL) 3056 return NULL; 3057 3058 return d_make_comp (di, DEMANGLE_COMPONENT_PTRMEM_TYPE, cl, mem); 3059 } 3060 3061 /* <non-negative number> _ */ 3062 3063 static int 3064 d_compact_number (struct d_info *di) 3065 { 3066 int num; 3067 if (d_peek_char (di) == '_') 3068 num = 0; 3069 else if (d_peek_char (di) == 'n') 3070 return -1; 3071 else 3072 num = d_number (di) + 1; 3073 3074 if (num < 0 || ! d_check_char (di, '_')) 3075 return -1; 3076 return num; 3077 } 3078 3079 /* <template-param> ::= T_ 3080 ::= T <(parameter-2 non-negative) number> _ 3081 */ 3082 3083 static struct demangle_component * 3084 d_template_param (struct d_info *di) 3085 { 3086 int param; 3087 3088 if (! d_check_char (di, 'T')) 3089 return NULL; 3090 3091 param = d_compact_number (di); 3092 if (param < 0) 3093 return NULL; 3094 3095 ++di->did_subs; 3096 3097 return d_make_template_param (di, param); 3098 } 3099 3100 /* <template-args> ::= I <template-arg>+ E */ 3101 3102 static struct demangle_component * 3103 d_template_args (struct d_info *di) 3104 { 3105 if (d_peek_char (di) != 'I' 3106 && d_peek_char (di) != 'J') 3107 return NULL; 3108 d_advance (di, 1); 3109 3110 return d_template_args_1 (di); 3111 } 3112 3113 /* <template-arg>* E */ 3114 3115 static struct demangle_component * 3116 d_template_args_1 (struct d_info *di) 3117 { 3118 struct demangle_component *hold_last_name; 3119 struct demangle_component *al; 3120 struct demangle_component **pal; 3121 3122 /* Preserve the last name we saw--don't let the template arguments 3123 clobber it, as that would give us the wrong name for a subsequent 3124 constructor or destructor. */ 3125 hold_last_name = di->last_name; 3126 3127 if (d_peek_char (di) == 'E') 3128 { 3129 /* An argument pack can be empty. */ 3130 d_advance (di, 1); 3131 return d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE_ARGLIST, NULL, NULL); 3132 } 3133 3134 al = NULL; 3135 pal = &al; 3136 while (1) 3137 { 3138 struct demangle_component *a; 3139 3140 a = d_template_arg (di); 3141 if (a == NULL) 3142 return NULL; 3143 3144 *pal = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE_ARGLIST, a, NULL); 3145 if (*pal == NULL) 3146 return NULL; 3147 pal = &d_right (*pal); 3148 3149 if (d_peek_char (di) == 'E') 3150 { 3151 d_advance (di, 1); 3152 break; 3153 } 3154 } 3155 3156 di->last_name = hold_last_name; 3157 3158 return al; 3159 } 3160 3161 /* <template-arg> ::= <type> 3162 ::= X <expression> E 3163 ::= <expr-primary> 3164 */ 3165 3166 static struct demangle_component * 3167 d_template_arg (struct d_info *di) 3168 { 3169 struct demangle_component *ret; 3170 3171 switch (d_peek_char (di)) 3172 { 3173 case 'X': 3174 d_advance (di, 1); 3175 ret = d_expression (di); 3176 if (! d_check_char (di, 'E')) 3177 return NULL; 3178 return ret; 3179 3180 case 'L': 3181 return d_expr_primary (di); 3182 3183 case 'I': 3184 case 'J': 3185 /* An argument pack. */ 3186 return d_template_args (di); 3187 3188 default: 3189 return cplus_demangle_type (di); 3190 } 3191 } 3192 3193 /* Parse a sequence of expressions until we hit the terminator 3194 character. */ 3195 3196 static struct demangle_component * 3197 d_exprlist (struct d_info *di, char terminator) 3198 { 3199 struct demangle_component *list = NULL; 3200 struct demangle_component **p = &list; 3201 3202 if (d_peek_char (di) == terminator) 3203 { 3204 d_advance (di, 1); 3205 return d_make_comp (di, DEMANGLE_COMPONENT_ARGLIST, NULL, NULL); 3206 } 3207 3208 while (1) 3209 { 3210 struct demangle_component *arg = d_expression (di); 3211 if (arg == NULL) 3212 return NULL; 3213 3214 *p = d_make_comp (di, DEMANGLE_COMPONENT_ARGLIST, arg, NULL); 3215 if (*p == NULL) 3216 return NULL; 3217 p = &d_right (*p); 3218 3219 if (d_peek_char (di) == terminator) 3220 { 3221 d_advance (di, 1); 3222 break; 3223 } 3224 } 3225 3226 return list; 3227 } 3228 3229 /* Returns nonzero iff OP is an operator for a C++ cast: const_cast, 3230 dynamic_cast, static_cast or reinterpret_cast. */ 3231 3232 static int 3233 op_is_new_cast (struct demangle_component *op) 3234 { 3235 const char *code = op->u.s_operator.op->code; 3236 return (code[1] == 'c' 3237 && (code[0] == 's' || code[0] == 'd' 3238 || code[0] == 'c' || code[0] == 'r')); 3239 } 3240 3241 /* <expression> ::= <(unary) operator-name> <expression> 3242 ::= <(binary) operator-name> <expression> <expression> 3243 ::= <(trinary) operator-name> <expression> <expression> <expression> 3244 ::= cl <expression>+ E 3245 ::= st <type> 3246 ::= <template-param> 3247 ::= sr <type> <unqualified-name> 3248 ::= sr <type> <unqualified-name> <template-args> 3249 ::= <expr-primary> 3250 */ 3251 3252 static inline struct demangle_component * 3253 d_expression_1 (struct d_info *di) 3254 { 3255 char peek; 3256 3257 peek = d_peek_char (di); 3258 if (peek == 'L') 3259 return d_expr_primary (di); 3260 else if (peek == 'T') 3261 return d_template_param (di); 3262 else if (peek == 's' && d_peek_next_char (di) == 'r') 3263 { 3264 struct demangle_component *type; 3265 struct demangle_component *name; 3266 3267 d_advance (di, 2); 3268 type = cplus_demangle_type (di); 3269 name = d_unqualified_name (di); 3270 if (d_peek_char (di) != 'I') 3271 return d_make_comp (di, DEMANGLE_COMPONENT_QUAL_NAME, type, name); 3272 else 3273 return d_make_comp (di, DEMANGLE_COMPONENT_QUAL_NAME, type, 3274 d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, name, 3275 d_template_args (di))); 3276 } 3277 else if (peek == 's' && d_peek_next_char (di) == 'p') 3278 { 3279 d_advance (di, 2); 3280 return d_make_comp (di, DEMANGLE_COMPONENT_PACK_EXPANSION, 3281 d_expression_1 (di), NULL); 3282 } 3283 else if (peek == 'f' && d_peek_next_char (di) == 'p') 3284 { 3285 /* Function parameter used in a late-specified return type. */ 3286 int index; 3287 d_advance (di, 2); 3288 if (d_peek_char (di) == 'T') 3289 { 3290 /* 'this' parameter. */ 3291 d_advance (di, 1); 3292 index = 0; 3293 } 3294 else 3295 { 3296 index = d_compact_number (di); 3297 if (index == INT_MAX || index == -1) 3298 return NULL; 3299 index++; 3300 } 3301 return d_make_function_param (di, index); 3302 } 3303 else if (IS_DIGIT (peek) 3304 || (peek == 'o' && d_peek_next_char (di) == 'n')) 3305 { 3306 /* We can get an unqualified name as an expression in the case of 3307 a dependent function call, i.e. decltype(f(t)). */ 3308 struct demangle_component *name; 3309 3310 if (peek == 'o') 3311 /* operator-function-id, i.e. operator+(t). */ 3312 d_advance (di, 2); 3313 3314 name = d_unqualified_name (di); 3315 if (name == NULL) 3316 return NULL; 3317 if (d_peek_char (di) == 'I') 3318 return d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, name, 3319 d_template_args (di)); 3320 else 3321 return name; 3322 } 3323 else if ((peek == 'i' || peek == 't') 3324 && d_peek_next_char (di) == 'l') 3325 { 3326 /* Brace-enclosed initializer list, untyped or typed. */ 3327 struct demangle_component *type = NULL; 3328 if (peek == 't') 3329 type = cplus_demangle_type (di); 3330 if (!d_peek_next_char (di)) 3331 return NULL; 3332 d_advance (di, 2); 3333 return d_make_comp (di, DEMANGLE_COMPONENT_INITIALIZER_LIST, 3334 type, d_exprlist (di, 'E')); 3335 } 3336 else 3337 { 3338 struct demangle_component *op; 3339 const char *code = NULL; 3340 int args; 3341 3342 op = d_operator_name (di); 3343 if (op == NULL) 3344 return NULL; 3345 3346 if (op->type == DEMANGLE_COMPONENT_OPERATOR) 3347 { 3348 code = op->u.s_operator.op->code; 3349 di->expansion += op->u.s_operator.op->len - 2; 3350 if (strcmp (code, "st") == 0) 3351 return d_make_comp (di, DEMANGLE_COMPONENT_UNARY, op, 3352 cplus_demangle_type (di)); 3353 } 3354 3355 switch (op->type) 3356 { 3357 default: 3358 return NULL; 3359 case DEMANGLE_COMPONENT_OPERATOR: 3360 args = op->u.s_operator.op->args; 3361 break; 3362 case DEMANGLE_COMPONENT_EXTENDED_OPERATOR: 3363 args = op->u.s_extended_operator.args; 3364 break; 3365 case DEMANGLE_COMPONENT_CAST: 3366 args = 1; 3367 break; 3368 } 3369 3370 switch (args) 3371 { 3372 case 0: 3373 return d_make_comp (di, DEMANGLE_COMPONENT_NULLARY, op, NULL); 3374 3375 case 1: 3376 { 3377 struct demangle_component *operand; 3378 int suffix = 0; 3379 3380 if (code && (code[0] == 'p' || code[0] == 'm') 3381 && code[1] == code[0]) 3382 /* pp_ and mm_ are the prefix variants. */ 3383 suffix = !d_check_char (di, '_'); 3384 3385 if (op->type == DEMANGLE_COMPONENT_CAST 3386 && d_check_char (di, '_')) 3387 operand = d_exprlist (di, 'E'); 3388 else if (code && !strcmp (code, "sP")) 3389 operand = d_template_args_1 (di); 3390 else 3391 operand = d_expression_1 (di); 3392 3393 if (suffix) 3394 /* Indicate the suffix variant for d_print_comp. */ 3395 return d_make_comp (di, DEMANGLE_COMPONENT_UNARY, op, 3396 d_make_comp (di, 3397 DEMANGLE_COMPONENT_BINARY_ARGS, 3398 operand, operand)); 3399 else 3400 return d_make_comp (di, DEMANGLE_COMPONENT_UNARY, op, 3401 operand); 3402 } 3403 case 2: 3404 { 3405 struct demangle_component *left; 3406 struct demangle_component *right; 3407 3408 if (code == NULL) 3409 return NULL; 3410 if (op_is_new_cast (op)) 3411 left = cplus_demangle_type (di); 3412 else if (code[0] == 'f') 3413 /* fold-expression. */ 3414 left = d_operator_name (di); 3415 else 3416 left = d_expression_1 (di); 3417 if (!strcmp (code, "cl")) 3418 right = d_exprlist (di, 'E'); 3419 else if (!strcmp (code, "dt") || !strcmp (code, "pt")) 3420 { 3421 right = d_unqualified_name (di); 3422 if (d_peek_char (di) == 'I') 3423 right = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, 3424 right, d_template_args (di)); 3425 } 3426 else 3427 right = d_expression_1 (di); 3428 3429 return d_make_comp (di, DEMANGLE_COMPONENT_BINARY, op, 3430 d_make_comp (di, 3431 DEMANGLE_COMPONENT_BINARY_ARGS, 3432 left, right)); 3433 } 3434 case 3: 3435 { 3436 struct demangle_component *first; 3437 struct demangle_component *second; 3438 struct demangle_component *third; 3439 3440 if (code == NULL) 3441 return NULL; 3442 else if (!strcmp (code, "qu")) 3443 { 3444 /* ?: expression. */ 3445 first = d_expression_1 (di); 3446 second = d_expression_1 (di); 3447 third = d_expression_1 (di); 3448 if (third == NULL) 3449 return NULL; 3450 } 3451 else if (code[0] == 'f') 3452 { 3453 /* fold-expression. */ 3454 first = d_operator_name (di); 3455 second = d_expression_1 (di); 3456 third = d_expression_1 (di); 3457 if (third == NULL) 3458 return NULL; 3459 } 3460 else if (code[0] == 'n') 3461 { 3462 /* new-expression. */ 3463 if (code[1] != 'w' && code[1] != 'a') 3464 return NULL; 3465 first = d_exprlist (di, '_'); 3466 second = cplus_demangle_type (di); 3467 if (d_peek_char (di) == 'E') 3468 { 3469 d_advance (di, 1); 3470 third = NULL; 3471 } 3472 else if (d_peek_char (di) == 'p' 3473 && d_peek_next_char (di) == 'i') 3474 { 3475 /* Parenthesized initializer. */ 3476 d_advance (di, 2); 3477 third = d_exprlist (di, 'E'); 3478 } 3479 else if (d_peek_char (di) == 'i' 3480 && d_peek_next_char (di) == 'l') 3481 /* initializer-list. */ 3482 third = d_expression_1 (di); 3483 else 3484 return NULL; 3485 } 3486 else 3487 return NULL; 3488 return d_make_comp (di, DEMANGLE_COMPONENT_TRINARY, op, 3489 d_make_comp (di, 3490 DEMANGLE_COMPONENT_TRINARY_ARG1, 3491 first, 3492 d_make_comp (di, 3493 DEMANGLE_COMPONENT_TRINARY_ARG2, 3494 second, third))); 3495 } 3496 default: 3497 return NULL; 3498 } 3499 } 3500 } 3501 3502 static struct demangle_component * 3503 d_expression (struct d_info *di) 3504 { 3505 struct demangle_component *ret; 3506 int was_expression = di->is_expression; 3507 3508 di->is_expression = 1; 3509 ret = d_expression_1 (di); 3510 di->is_expression = was_expression; 3511 return ret; 3512 } 3513 3514 /* <expr-primary> ::= L <type> <(value) number> E 3515 ::= L <type> <(value) float> E 3516 ::= L <mangled-name> E 3517 */ 3518 3519 static struct demangle_component * 3520 d_expr_primary (struct d_info *di) 3521 { 3522 struct demangle_component *ret; 3523 3524 if (! d_check_char (di, 'L')) 3525 return NULL; 3526 if (d_peek_char (di) == '_' 3527 /* Workaround for G++ bug; see comment in write_template_arg. */ 3528 || d_peek_char (di) == 'Z') 3529 ret = cplus_demangle_mangled_name (di, 0); 3530 else 3531 { 3532 struct demangle_component *type; 3533 enum demangle_component_type t; 3534 const char *s; 3535 3536 type = cplus_demangle_type (di); 3537 if (type == NULL) 3538 return NULL; 3539 3540 /* If we have a type we know how to print, we aren't going to 3541 print the type name itself. */ 3542 if (type->type == DEMANGLE_COMPONENT_BUILTIN_TYPE 3543 && type->u.s_builtin.type->print != D_PRINT_DEFAULT) 3544 di->expansion -= type->u.s_builtin.type->len; 3545 3546 /* Rather than try to interpret the literal value, we just 3547 collect it as a string. Note that it's possible to have a 3548 floating point literal here. The ABI specifies that the 3549 format of such literals is machine independent. That's fine, 3550 but what's not fine is that versions of g++ up to 3.2 with 3551 -fabi-version=1 used upper case letters in the hex constant, 3552 and dumped out gcc's internal representation. That makes it 3553 hard to tell where the constant ends, and hard to dump the 3554 constant in any readable form anyhow. We don't attempt to 3555 handle these cases. */ 3556 3557 t = DEMANGLE_COMPONENT_LITERAL; 3558 if (d_peek_char (di) == 'n') 3559 { 3560 t = DEMANGLE_COMPONENT_LITERAL_NEG; 3561 d_advance (di, 1); 3562 } 3563 s = d_str (di); 3564 while (d_peek_char (di) != 'E') 3565 { 3566 if (d_peek_char (di) == '\0') 3567 return NULL; 3568 d_advance (di, 1); 3569 } 3570 ret = d_make_comp (di, t, type, d_make_name (di, s, d_str (di) - s)); 3571 } 3572 if (! d_check_char (di, 'E')) 3573 return NULL; 3574 return ret; 3575 } 3576 3577 /* <local-name> ::= Z <(function) encoding> E <(entity) name> [<discriminator>] 3578 ::= Z <(function) encoding> E s [<discriminator>] 3579 ::= Z <(function) encoding> E d [<parameter> number>] _ <entity name> 3580 */ 3581 3582 static struct demangle_component * 3583 d_local_name (struct d_info *di) 3584 { 3585 struct demangle_component *function; 3586 3587 if (! d_check_char (di, 'Z')) 3588 return NULL; 3589 3590 function = d_encoding (di, 0); 3591 3592 if (! d_check_char (di, 'E')) 3593 return NULL; 3594 3595 if (d_peek_char (di) == 's') 3596 { 3597 d_advance (di, 1); 3598 if (! d_discriminator (di)) 3599 return NULL; 3600 return d_make_comp (di, DEMANGLE_COMPONENT_LOCAL_NAME, function, 3601 d_make_name (di, "string literal", 3602 sizeof "string literal" - 1)); 3603 } 3604 else 3605 { 3606 struct demangle_component *name; 3607 int num = -1; 3608 3609 if (d_peek_char (di) == 'd') 3610 { 3611 /* Default argument scope: d <number> _. */ 3612 d_advance (di, 1); 3613 num = d_compact_number (di); 3614 if (num < 0) 3615 return NULL; 3616 } 3617 3618 name = d_name (di); 3619 if (name) 3620 switch (name->type) 3621 { 3622 /* Lambdas and unnamed types have internal discriminators. */ 3623 case DEMANGLE_COMPONENT_LAMBDA: 3624 case DEMANGLE_COMPONENT_UNNAMED_TYPE: 3625 break; 3626 default: 3627 if (! d_discriminator (di)) 3628 return NULL; 3629 } 3630 if (num >= 0) 3631 name = d_make_default_arg (di, num, name); 3632 return d_make_comp (di, DEMANGLE_COMPONENT_LOCAL_NAME, function, name); 3633 } 3634 } 3635 3636 /* <discriminator> ::= _ <number> # when number < 10 3637 ::= __ <number> _ # when number >= 10 3638 3639 <discriminator> ::= _ <number> # when number >=10 3640 is also accepted to support gcc versions that wrongly mangled that way. 3641 3642 We demangle the discriminator, but we don't print it out. FIXME: 3643 We should print it out in verbose mode. */ 3644 3645 static int 3646 d_discriminator (struct d_info *di) 3647 { 3648 int discrim, num_underscores = 1; 3649 3650 if (d_peek_char (di) != '_') 3651 return 1; 3652 d_advance (di, 1); 3653 if (d_peek_char (di) == '_') 3654 { 3655 ++num_underscores; 3656 d_advance (di, 1); 3657 } 3658 3659 discrim = d_number (di); 3660 if (discrim < 0) 3661 return 0; 3662 if (num_underscores > 1 && discrim >= 10) 3663 { 3664 if (d_peek_char (di) == '_') 3665 d_advance (di, 1); 3666 else 3667 return 0; 3668 } 3669 3670 return 1; 3671 } 3672 3673 /* <closure-type-name> ::= Ul <lambda-sig> E [ <nonnegative number> ] _ */ 3674 3675 static struct demangle_component * 3676 d_lambda (struct d_info *di) 3677 { 3678 struct demangle_component *tl; 3679 struct demangle_component *ret; 3680 int num; 3681 3682 if (! d_check_char (di, 'U')) 3683 return NULL; 3684 if (! d_check_char (di, 'l')) 3685 return NULL; 3686 3687 tl = d_parmlist (di); 3688 if (tl == NULL) 3689 return NULL; 3690 3691 if (! d_check_char (di, 'E')) 3692 return NULL; 3693 3694 num = d_compact_number (di); 3695 if (num < 0) 3696 return NULL; 3697 3698 ret = d_make_empty (di); 3699 if (ret) 3700 { 3701 ret->type = DEMANGLE_COMPONENT_LAMBDA; 3702 ret->u.s_unary_num.sub = tl; 3703 ret->u.s_unary_num.num = num; 3704 } 3705 3706 if (! d_add_substitution (di, ret)) 3707 return NULL; 3708 3709 return ret; 3710 } 3711 3712 /* <unnamed-type-name> ::= Ut [ <nonnegative number> ] _ */ 3713 3714 static struct demangle_component * 3715 d_unnamed_type (struct d_info *di) 3716 { 3717 struct demangle_component *ret; 3718 int num; 3719 3720 if (! d_check_char (di, 'U')) 3721 return NULL; 3722 if (! d_check_char (di, 't')) 3723 return NULL; 3724 3725 num = d_compact_number (di); 3726 if (num < 0) 3727 return NULL; 3728 3729 ret = d_make_empty (di); 3730 if (ret) 3731 { 3732 ret->type = DEMANGLE_COMPONENT_UNNAMED_TYPE; 3733 ret->u.s_number.number = num; 3734 } 3735 3736 if (! d_add_substitution (di, ret)) 3737 return NULL; 3738 3739 return ret; 3740 } 3741 3742 /* <clone-suffix> ::= [ . <clone-type-identifier> ] [ . <nonnegative number> ]* 3743 */ 3744 3745 static struct demangle_component * 3746 d_clone_suffix (struct d_info *di, struct demangle_component *encoding) 3747 { 3748 const char *suffix = d_str (di); 3749 const char *pend = suffix; 3750 struct demangle_component *n; 3751 3752 if (*pend == '.' && (IS_LOWER (pend[1]) || pend[1] == '_')) 3753 { 3754 pend += 2; 3755 while (IS_LOWER (*pend) || *pend == '_') 3756 ++pend; 3757 } 3758 while (*pend == '.' && IS_DIGIT (pend[1])) 3759 { 3760 pend += 2; 3761 while (IS_DIGIT (*pend)) 3762 ++pend; 3763 } 3764 d_advance (di, pend - suffix); 3765 n = d_make_name (di, suffix, pend - suffix); 3766 return d_make_comp (di, DEMANGLE_COMPONENT_CLONE, encoding, n); 3767 } 3768 3769 /* Add a new substitution. */ 3770 3771 static int 3772 d_add_substitution (struct d_info *di, struct demangle_component *dc) 3773 { 3774 if (dc == NULL) 3775 return 0; 3776 if (di->next_sub >= di->num_subs) 3777 return 0; 3778 di->subs[di->next_sub] = dc; 3779 ++di->next_sub; 3780 return 1; 3781 } 3782 3783 /* <substitution> ::= S <seq-id> _ 3784 ::= S_ 3785 ::= St 3786 ::= Sa 3787 ::= Sb 3788 ::= Ss 3789 ::= Si 3790 ::= So 3791 ::= Sd 3792 3793 If PREFIX is non-zero, then this type is being used as a prefix in 3794 a qualified name. In this case, for the standard substitutions, we 3795 need to check whether we are being used as a prefix for a 3796 constructor or destructor, and return a full template name. 3797 Otherwise we will get something like std::iostream::~iostream() 3798 which does not correspond particularly well to any function which 3799 actually appears in the source. 3800 */ 3801 3802 static const struct d_standard_sub_info standard_subs[] = 3803 { 3804 { 't', NL ("std"), 3805 NL ("std"), 3806 NULL, 0 }, 3807 { 'a', NL ("std::allocator"), 3808 NL ("std::allocator"), 3809 NL ("allocator") }, 3810 { 'b', NL ("std::basic_string"), 3811 NL ("std::basic_string"), 3812 NL ("basic_string") }, 3813 { 's', NL ("std::string"), 3814 NL ("std::basic_string<char, std::char_traits<char>, std::allocator<char> >"), 3815 NL ("basic_string") }, 3816 { 'i', NL ("std::istream"), 3817 NL ("std::basic_istream<char, std::char_traits<char> >"), 3818 NL ("basic_istream") }, 3819 { 'o', NL ("std::ostream"), 3820 NL ("std::basic_ostream<char, std::char_traits<char> >"), 3821 NL ("basic_ostream") }, 3822 { 'd', NL ("std::iostream"), 3823 NL ("std::basic_iostream<char, std::char_traits<char> >"), 3824 NL ("basic_iostream") } 3825 }; 3826 3827 static struct demangle_component * 3828 d_substitution (struct d_info *di, int prefix) 3829 { 3830 char c; 3831 3832 if (! d_check_char (di, 'S')) 3833 return NULL; 3834 3835 c = d_next_char (di); 3836 if (c == '_' || IS_DIGIT (c) || IS_UPPER (c)) 3837 { 3838 unsigned int id; 3839 3840 id = 0; 3841 if (c != '_') 3842 { 3843 do 3844 { 3845 unsigned int new_id; 3846 3847 if (IS_DIGIT (c)) 3848 new_id = id * 36 + c - '0'; 3849 else if (IS_UPPER (c)) 3850 new_id = id * 36 + c - 'A' + 10; 3851 else 3852 return NULL; 3853 if (new_id < id) 3854 return NULL; 3855 id = new_id; 3856 c = d_next_char (di); 3857 } 3858 while (c != '_'); 3859 3860 ++id; 3861 } 3862 3863 if (id >= (unsigned int) di->next_sub) 3864 return NULL; 3865 3866 ++di->did_subs; 3867 3868 return di->subs[id]; 3869 } 3870 else 3871 { 3872 int verbose; 3873 const struct d_standard_sub_info *p; 3874 const struct d_standard_sub_info *pend; 3875 3876 verbose = (di->options & DMGL_VERBOSE) != 0; 3877 if (! verbose && prefix) 3878 { 3879 char peek; 3880 3881 peek = d_peek_char (di); 3882 if (peek == 'C' || peek == 'D') 3883 verbose = 1; 3884 } 3885 3886 pend = (&standard_subs[0] 3887 + sizeof standard_subs / sizeof standard_subs[0]); 3888 for (p = &standard_subs[0]; p < pend; ++p) 3889 { 3890 if (c == p->code) 3891 { 3892 const char *s; 3893 int len; 3894 struct demangle_component *dc; 3895 3896 if (p->set_last_name != NULL) 3897 di->last_name = d_make_sub (di, p->set_last_name, 3898 p->set_last_name_len); 3899 if (verbose) 3900 { 3901 s = p->full_expansion; 3902 len = p->full_len; 3903 } 3904 else 3905 { 3906 s = p->simple_expansion; 3907 len = p->simple_len; 3908 } 3909 di->expansion += len; 3910 dc = d_make_sub (di, s, len); 3911 if (d_peek_char (di) == 'B') 3912 { 3913 /* If there are ABI tags on the abbreviation, it becomes 3914 a substitution candidate. */ 3915 dc = d_abi_tags (di, dc); 3916 d_add_substitution (di, dc); 3917 } 3918 return dc; 3919 } 3920 } 3921 3922 return NULL; 3923 } 3924 } 3925 3926 static void 3927 d_checkpoint (struct d_info *di, struct d_info_checkpoint *checkpoint) 3928 { 3929 checkpoint->n = di->n; 3930 checkpoint->next_comp = di->next_comp; 3931 checkpoint->next_sub = di->next_sub; 3932 checkpoint->did_subs = di->did_subs; 3933 checkpoint->expansion = di->expansion; 3934 } 3935 3936 static void 3937 d_backtrack (struct d_info *di, struct d_info_checkpoint *checkpoint) 3938 { 3939 di->n = checkpoint->n; 3940 di->next_comp = checkpoint->next_comp; 3941 di->next_sub = checkpoint->next_sub; 3942 di->did_subs = checkpoint->did_subs; 3943 di->expansion = checkpoint->expansion; 3944 } 3945 3946 /* Initialize a growable string. */ 3947 3948 static void 3949 d_growable_string_init (struct d_growable_string *dgs, size_t estimate) 3950 { 3951 dgs->buf = NULL; 3952 dgs->len = 0; 3953 dgs->alc = 0; 3954 dgs->allocation_failure = 0; 3955 3956 if (estimate > 0) 3957 d_growable_string_resize (dgs, estimate); 3958 } 3959 3960 /* Grow a growable string to a given size. */ 3961 3962 static inline void 3963 d_growable_string_resize (struct d_growable_string *dgs, size_t need) 3964 { 3965 size_t newalc; 3966 char *newbuf; 3967 3968 if (dgs->allocation_failure) 3969 return; 3970 3971 /* Start allocation at two bytes to avoid any possibility of confusion 3972 with the special value of 1 used as a return in *palc to indicate 3973 allocation failures. */ 3974 newalc = dgs->alc > 0 ? dgs->alc : 2; 3975 while (newalc < need) 3976 newalc <<= 1; 3977 3978 newbuf = (char *) realloc ("demangle.dgsr.1", dgs->buf, newalc); 3979 if (newbuf == NULL) 3980 { 3981 free (dgs->buf); 3982 dgs->buf = NULL; 3983 dgs->len = 0; 3984 dgs->alc = 0; 3985 dgs->allocation_failure = 1; 3986 return; 3987 } 3988 dgs->buf = newbuf; 3989 dgs->alc = newalc; 3990 } 3991 3992 /* Append a buffer to a growable string. */ 3993 3994 static inline void 3995 d_growable_string_append_buffer (struct d_growable_string *dgs, 3996 const char *s, size_t l) 3997 { 3998 size_t need; 3999 4000 need = dgs->len + l + 1; 4001 if (need > dgs->alc) 4002 d_growable_string_resize (dgs, need); 4003 4004 if (dgs->allocation_failure) 4005 return; 4006 4007 memcpy (dgs->buf + dgs->len, s, l); 4008 dgs->buf[dgs->len + l] = '\0'; 4009 dgs->len += l; 4010 } 4011 4012 /* Bridge growable strings to the callback mechanism. */ 4013 4014 static void 4015 d_growable_string_callback_adapter (const char *s, size_t l, void *opaque) 4016 { 4017 struct d_growable_string *dgs = (struct d_growable_string*) opaque; 4018 4019 d_growable_string_append_buffer (dgs, s, l); 4020 } 4021 4022 /* Walk the tree, counting the number of templates encountered, and 4023 the number of times a scope might be saved. These counts will be 4024 used to allocate data structures for d_print_comp, so the logic 4025 here must mirror the logic d_print_comp will use. It is not 4026 important that the resulting numbers are exact, so long as they 4027 are larger than the actual numbers encountered. */ 4028 4029 static void 4030 d_count_templates_scopes (int *num_templates, int *num_scopes, 4031 const struct demangle_component *dc) 4032 { 4033 if (dc == NULL) 4034 return; 4035 4036 switch (dc->type) 4037 { 4038 case DEMANGLE_COMPONENT_NAME: 4039 case DEMANGLE_COMPONENT_TEMPLATE_PARAM: 4040 case DEMANGLE_COMPONENT_FUNCTION_PARAM: 4041 case DEMANGLE_COMPONENT_SUB_STD: 4042 case DEMANGLE_COMPONENT_BUILTIN_TYPE: 4043 case DEMANGLE_COMPONENT_OPERATOR: 4044 case DEMANGLE_COMPONENT_CHARACTER: 4045 case DEMANGLE_COMPONENT_NUMBER: 4046 case DEMANGLE_COMPONENT_UNNAMED_TYPE: 4047 break; 4048 4049 case DEMANGLE_COMPONENT_TEMPLATE: 4050 (*num_templates)++; 4051 goto recurse_left_right; 4052 4053 case DEMANGLE_COMPONENT_REFERENCE: 4054 case DEMANGLE_COMPONENT_RVALUE_REFERENCE: 4055 if (d_left (dc)->type == DEMANGLE_COMPONENT_TEMPLATE_PARAM) 4056 (*num_scopes)++; 4057 goto recurse_left_right; 4058 4059 case DEMANGLE_COMPONENT_QUAL_NAME: 4060 case DEMANGLE_COMPONENT_LOCAL_NAME: 4061 case DEMANGLE_COMPONENT_TYPED_NAME: 4062 case DEMANGLE_COMPONENT_VTABLE: 4063 case DEMANGLE_COMPONENT_VTT: 4064 case DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE: 4065 case DEMANGLE_COMPONENT_TYPEINFO: 4066 case DEMANGLE_COMPONENT_TYPEINFO_NAME: 4067 case DEMANGLE_COMPONENT_TYPEINFO_FN: 4068 case DEMANGLE_COMPONENT_THUNK: 4069 case DEMANGLE_COMPONENT_VIRTUAL_THUNK: 4070 case DEMANGLE_COMPONENT_COVARIANT_THUNK: 4071 case DEMANGLE_COMPONENT_JAVA_CLASS: 4072 case DEMANGLE_COMPONENT_GUARD: 4073 case DEMANGLE_COMPONENT_TLS_INIT: 4074 case DEMANGLE_COMPONENT_TLS_WRAPPER: 4075 case DEMANGLE_COMPONENT_REFTEMP: 4076 case DEMANGLE_COMPONENT_HIDDEN_ALIAS: 4077 case DEMANGLE_COMPONENT_RESTRICT: 4078 case DEMANGLE_COMPONENT_VOLATILE: 4079 case DEMANGLE_COMPONENT_CONST: 4080 case DEMANGLE_COMPONENT_RESTRICT_THIS: 4081 case DEMANGLE_COMPONENT_VOLATILE_THIS: 4082 case DEMANGLE_COMPONENT_CONST_THIS: 4083 case DEMANGLE_COMPONENT_REFERENCE_THIS: 4084 case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS: 4085 case DEMANGLE_COMPONENT_TRANSACTION_SAFE: 4086 case DEMANGLE_COMPONENT_NOEXCEPT: 4087 case DEMANGLE_COMPONENT_THROW_SPEC: 4088 case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL: 4089 case DEMANGLE_COMPONENT_POINTER: 4090 case DEMANGLE_COMPONENT_COMPLEX: 4091 case DEMANGLE_COMPONENT_IMAGINARY: 4092 case DEMANGLE_COMPONENT_VENDOR_TYPE: 4093 case DEMANGLE_COMPONENT_FUNCTION_TYPE: 4094 case DEMANGLE_COMPONENT_ARRAY_TYPE: 4095 case DEMANGLE_COMPONENT_PTRMEM_TYPE: 4096 case DEMANGLE_COMPONENT_VECTOR_TYPE: 4097 case DEMANGLE_COMPONENT_ARGLIST: 4098 case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST: 4099 case DEMANGLE_COMPONENT_INITIALIZER_LIST: 4100 case DEMANGLE_COMPONENT_CAST: 4101 case DEMANGLE_COMPONENT_CONVERSION: 4102 case DEMANGLE_COMPONENT_NULLARY: 4103 case DEMANGLE_COMPONENT_UNARY: 4104 case DEMANGLE_COMPONENT_BINARY: 4105 case DEMANGLE_COMPONENT_BINARY_ARGS: 4106 case DEMANGLE_COMPONENT_TRINARY: 4107 case DEMANGLE_COMPONENT_TRINARY_ARG1: 4108 case DEMANGLE_COMPONENT_TRINARY_ARG2: 4109 case DEMANGLE_COMPONENT_LITERAL: 4110 case DEMANGLE_COMPONENT_LITERAL_NEG: 4111 case DEMANGLE_COMPONENT_JAVA_RESOURCE: 4112 case DEMANGLE_COMPONENT_COMPOUND_NAME: 4113 case DEMANGLE_COMPONENT_DECLTYPE: 4114 case DEMANGLE_COMPONENT_TRANSACTION_CLONE: 4115 case DEMANGLE_COMPONENT_NONTRANSACTION_CLONE: 4116 case DEMANGLE_COMPONENT_PACK_EXPANSION: 4117 case DEMANGLE_COMPONENT_TAGGED_NAME: 4118 case DEMANGLE_COMPONENT_CLONE: 4119 recurse_left_right: 4120 d_count_templates_scopes (num_templates, num_scopes, 4121 d_left (dc)); 4122 d_count_templates_scopes (num_templates, num_scopes, 4123 d_right (dc)); 4124 break; 4125 4126 case DEMANGLE_COMPONENT_CTOR: 4127 d_count_templates_scopes (num_templates, num_scopes, 4128 dc->u.s_ctor.name); 4129 break; 4130 4131 case DEMANGLE_COMPONENT_DTOR: 4132 d_count_templates_scopes (num_templates, num_scopes, 4133 dc->u.s_dtor.name); 4134 break; 4135 4136 case DEMANGLE_COMPONENT_EXTENDED_OPERATOR: 4137 d_count_templates_scopes (num_templates, num_scopes, 4138 dc->u.s_extended_operator.name); 4139 break; 4140 4141 case DEMANGLE_COMPONENT_FIXED_TYPE: 4142 d_count_templates_scopes (num_templates, num_scopes, 4143 dc->u.s_fixed.length); 4144 break; 4145 4146 case DEMANGLE_COMPONENT_GLOBAL_CONSTRUCTORS: 4147 case DEMANGLE_COMPONENT_GLOBAL_DESTRUCTORS: 4148 d_count_templates_scopes (num_templates, num_scopes, 4149 d_left (dc)); 4150 break; 4151 4152 case DEMANGLE_COMPONENT_LAMBDA: 4153 case DEMANGLE_COMPONENT_DEFAULT_ARG: 4154 d_count_templates_scopes (num_templates, num_scopes, 4155 dc->u.s_unary_num.sub); 4156 break; 4157 } 4158 } 4159 4160 /* Initialize a print information structure. */ 4161 4162 static void 4163 d_print_init (struct d_print_info *dpi, demangle_callbackref callback, 4164 void *opaque, const struct demangle_component *dc) 4165 { 4166 dpi->len = 0; 4167 dpi->last_char = '\0'; 4168 dpi->templates = NULL; 4169 dpi->modifiers = NULL; 4170 dpi->pack_index = 0; 4171 dpi->flush_count = 0; 4172 4173 dpi->callback = callback; 4174 dpi->opaque = opaque; 4175 4176 dpi->demangle_failure = 0; 4177 dpi->is_lambda_arg = 0; 4178 4179 dpi->component_stack = NULL; 4180 4181 dpi->saved_scopes = NULL; 4182 dpi->next_saved_scope = 0; 4183 dpi->num_saved_scopes = 0; 4184 4185 dpi->copy_templates = NULL; 4186 dpi->next_copy_template = 0; 4187 dpi->num_copy_templates = 0; 4188 4189 d_count_templates_scopes (&dpi->num_copy_templates, 4190 &dpi->num_saved_scopes, dc); 4191 dpi->num_copy_templates *= dpi->num_saved_scopes; 4192 4193 dpi->current_template = NULL; 4194 } 4195 4196 /* Indicate that an error occurred during printing, and test for error. */ 4197 4198 static inline void 4199 d_print_error (struct d_print_info *dpi) 4200 { 4201 dpi->demangle_failure = 1; 4202 } 4203 4204 static inline int 4205 d_print_saw_error (struct d_print_info *dpi) 4206 { 4207 return dpi->demangle_failure != 0; 4208 } 4209 4210 /* Flush buffered characters to the callback. */ 4211 4212 static inline void 4213 d_print_flush (struct d_print_info *dpi) 4214 { 4215 dpi->buf[dpi->len] = '\0'; 4216 dpi->callback (dpi->buf, dpi->len, dpi->opaque); 4217 dpi->len = 0; 4218 dpi->flush_count++; 4219 } 4220 4221 /* Append characters and buffers for printing. */ 4222 4223 static inline void 4224 d_append_char (struct d_print_info *dpi, char c) 4225 { 4226 if (dpi->len == sizeof (dpi->buf) - 1) 4227 d_print_flush (dpi); 4228 4229 dpi->buf[dpi->len++] = c; 4230 dpi->last_char = c; 4231 } 4232 4233 static inline void 4234 d_append_buffer (struct d_print_info *dpi, const char *s, size_t l) 4235 { 4236 size_t i; 4237 4238 for (i = 0; i < l; i++) 4239 d_append_char (dpi, s[i]); 4240 } 4241 4242 static inline void 4243 d_append_string (struct d_print_info *dpi, const char *s) 4244 { 4245 d_append_buffer (dpi, s, strlen (s)); 4246 } 4247 4248 static inline void 4249 d_append_num (struct d_print_info *dpi, int l) 4250 { 4251 char buf[25]; 4252 sprintf (buf,"%d", l); 4253 d_append_string (dpi, buf); 4254 } 4255 4256 static inline char 4257 d_last_char (struct d_print_info *dpi) 4258 { 4259 return dpi->last_char; 4260 } 4261 4262 /* Turn components into a human readable string. OPTIONS is the 4263 options bits passed to the demangler. DC is the tree to print. 4264 CALLBACK is a function to call to flush demangled string segments 4265 as they fill the intermediate buffer, and OPAQUE is a generalized 4266 callback argument. On success, this returns 1. On failure, 4267 it returns 0, indicating a bad parse. It does not use heap 4268 memory to build an output string, so cannot encounter memory 4269 allocation failure. */ 4270 4271 CP_STATIC_IF_GLIBCPP_V3 4272 int 4273 cplus_demangle_print_callback (int options, 4274 struct demangle_component *dc, 4275 demangle_callbackref callback, void *opaque) 4276 { 4277 struct d_print_info dpi; 4278 4279 d_print_init (&dpi, callback, opaque, dc); 4280 4281 { 4282 #if 0 /* in valgrind */ 4283 #ifdef CP_DYNAMIC_ARRAYS 4284 /* Avoid zero-length VLAs, which are prohibited by the C99 standard 4285 and flagged as errors by Address Sanitizer. */ 4286 __extension__ struct d_saved_scope scopes[(dpi.num_saved_scopes > 0) 4287 ? dpi.num_saved_scopes : 1]; 4288 __extension__ struct d_print_template temps[(dpi.num_copy_templates > 0) 4289 ? dpi.num_copy_templates : 1]; 4290 4291 dpi.saved_scopes = scopes; 4292 dpi.copy_templates = temps; 4293 #else 4294 dpi.saved_scopes = alloca (dpi.num_saved_scopes 4295 * sizeof (*dpi.saved_scopes)); 4296 dpi.copy_templates = alloca (dpi.num_copy_templates 4297 * sizeof (*dpi.copy_templates)); 4298 #endif 4299 #else 4300 /* Allocate memory dynamically to avoid VLAs as valgrind stack 4301 is a scarce resource */ 4302 dpi.saved_scopes = xmalloc(dpi.num_saved_scopes 4303 * sizeof (*dpi.saved_scopes)); 4304 dpi.copy_templates = xmalloc (dpi.num_copy_templates 4305 * sizeof (*dpi.copy_templates)); 4306 #endif /* ! in valgrind */ 4307 d_print_comp (&dpi, options, dc); 4308 } 4309 4310 d_print_flush (&dpi); 4311 4312 int status = ! d_print_saw_error (&dpi); 4313 4314 #if 0 /* in valgrind */ 4315 #else 4316 free (dpi.saved_scopes); 4317 free (dpi.copy_templates); 4318 #endif /* in valgrind */ 4319 4320 return status; 4321 } 4322 4323 /* Turn components into a human readable string. OPTIONS is the 4324 options bits passed to the demangler. DC is the tree to print. 4325 ESTIMATE is a guess at the length of the result. This returns a 4326 string allocated by malloc, or NULL on error. On success, this 4327 sets *PALC to the size of the allocated buffer. On failure, this 4328 sets *PALC to 0 for a bad parse, or to 1 for a memory allocation 4329 failure. */ 4330 4331 CP_STATIC_IF_GLIBCPP_V3 4332 char * 4333 cplus_demangle_print (int options, struct demangle_component *dc, 4334 int estimate, size_t *palc) 4335 { 4336 struct d_growable_string dgs; 4337 4338 d_growable_string_init (&dgs, estimate); 4339 4340 if (! cplus_demangle_print_callback (options, dc, 4341 d_growable_string_callback_adapter, 4342 &dgs)) 4343 { 4344 free (dgs.buf); 4345 *palc = 0; 4346 return NULL; 4347 } 4348 4349 *palc = dgs.allocation_failure ? 1 : dgs.alc; 4350 return dgs.buf; 4351 } 4352 4353 /* Returns the I'th element of the template arglist ARGS, or NULL on 4354 failure. If I is negative, return the entire arglist. */ 4355 4356 static struct demangle_component * 4357 d_index_template_argument (struct demangle_component *args, int i) 4358 { 4359 struct demangle_component *a; 4360 4361 if (i < 0) 4362 /* Print the whole argument pack. */ 4363 return args; 4364 4365 for (a = args; 4366 a != NULL; 4367 a = d_right (a)) 4368 { 4369 if (a->type != DEMANGLE_COMPONENT_TEMPLATE_ARGLIST) 4370 return NULL; 4371 if (i <= 0) 4372 break; 4373 --i; 4374 } 4375 if (i != 0 || a == NULL) 4376 return NULL; 4377 4378 return d_left (a); 4379 } 4380 4381 /* Returns the template argument from the current context indicated by DC, 4382 which is a DEMANGLE_COMPONENT_TEMPLATE_PARAM, or NULL. */ 4383 4384 static struct demangle_component * 4385 d_lookup_template_argument (struct d_print_info *dpi, 4386 const struct demangle_component *dc) 4387 { 4388 if (dpi->templates == NULL) 4389 { 4390 d_print_error (dpi); 4391 return NULL; 4392 } 4393 4394 return d_index_template_argument 4395 (d_right (dpi->templates->template_decl), 4396 dc->u.s_number.number); 4397 } 4398 4399 /* Returns a template argument pack used in DC (any will do), or NULL. */ 4400 4401 static struct demangle_component * 4402 d_find_pack (struct d_print_info *dpi, 4403 const struct demangle_component *dc) 4404 { 4405 struct demangle_component *a; 4406 if (dc == NULL) 4407 return NULL; 4408 4409 switch (dc->type) 4410 { 4411 case DEMANGLE_COMPONENT_TEMPLATE_PARAM: 4412 a = d_lookup_template_argument (dpi, dc); 4413 if (a && a->type == DEMANGLE_COMPONENT_TEMPLATE_ARGLIST) 4414 return a; 4415 return NULL; 4416 4417 case DEMANGLE_COMPONENT_PACK_EXPANSION: 4418 return NULL; 4419 4420 case DEMANGLE_COMPONENT_LAMBDA: 4421 case DEMANGLE_COMPONENT_NAME: 4422 case DEMANGLE_COMPONENT_TAGGED_NAME: 4423 case DEMANGLE_COMPONENT_OPERATOR: 4424 case DEMANGLE_COMPONENT_BUILTIN_TYPE: 4425 case DEMANGLE_COMPONENT_SUB_STD: 4426 case DEMANGLE_COMPONENT_CHARACTER: 4427 case DEMANGLE_COMPONENT_FUNCTION_PARAM: 4428 case DEMANGLE_COMPONENT_UNNAMED_TYPE: 4429 case DEMANGLE_COMPONENT_FIXED_TYPE: 4430 case DEMANGLE_COMPONENT_DEFAULT_ARG: 4431 case DEMANGLE_COMPONENT_NUMBER: 4432 return NULL; 4433 4434 case DEMANGLE_COMPONENT_EXTENDED_OPERATOR: 4435 return d_find_pack (dpi, dc->u.s_extended_operator.name); 4436 case DEMANGLE_COMPONENT_CTOR: 4437 return d_find_pack (dpi, dc->u.s_ctor.name); 4438 case DEMANGLE_COMPONENT_DTOR: 4439 return d_find_pack (dpi, dc->u.s_dtor.name); 4440 4441 default: 4442 a = d_find_pack (dpi, d_left (dc)); 4443 if (a) 4444 return a; 4445 return d_find_pack (dpi, d_right (dc)); 4446 } 4447 } 4448 4449 /* Returns the length of the template argument pack DC. */ 4450 4451 static int 4452 d_pack_length (const struct demangle_component *dc) 4453 { 4454 int count = 0; 4455 while (dc && dc->type == DEMANGLE_COMPONENT_TEMPLATE_ARGLIST 4456 && d_left (dc) != NULL) 4457 { 4458 ++count; 4459 dc = d_right (dc); 4460 } 4461 return count; 4462 } 4463 4464 /* Returns the number of template args in DC, expanding any pack expansions 4465 found there. */ 4466 4467 static int 4468 d_args_length (struct d_print_info *dpi, const struct demangle_component *dc) 4469 { 4470 int count = 0; 4471 for (; dc && dc->type == DEMANGLE_COMPONENT_TEMPLATE_ARGLIST; 4472 dc = d_right (dc)) 4473 { 4474 struct demangle_component *elt = d_left (dc); 4475 if (elt == NULL) 4476 break; 4477 if (elt->type == DEMANGLE_COMPONENT_PACK_EXPANSION) 4478 { 4479 struct demangle_component *a = d_find_pack (dpi, d_left (elt)); 4480 count += d_pack_length (a); 4481 } 4482 else 4483 ++count; 4484 } 4485 return count; 4486 } 4487 4488 /* DC is a component of a mangled expression. Print it, wrapped in parens 4489 if needed. */ 4490 4491 static void 4492 d_print_subexpr (struct d_print_info *dpi, int options, 4493 struct demangle_component *dc) 4494 { 4495 int simple = 0; 4496 if (dc->type == DEMANGLE_COMPONENT_NAME 4497 || dc->type == DEMANGLE_COMPONENT_QUAL_NAME 4498 || dc->type == DEMANGLE_COMPONENT_INITIALIZER_LIST 4499 || dc->type == DEMANGLE_COMPONENT_FUNCTION_PARAM) 4500 simple = 1; 4501 if (!simple) 4502 d_append_char (dpi, '('); 4503 d_print_comp (dpi, options, dc); 4504 if (!simple) 4505 d_append_char (dpi, ')'); 4506 } 4507 4508 /* Save the current scope. */ 4509 4510 static void 4511 d_save_scope (struct d_print_info *dpi, 4512 const struct demangle_component *container) 4513 { 4514 struct d_saved_scope *scope; 4515 struct d_print_template *src, **link; 4516 4517 if (dpi->next_saved_scope >= dpi->num_saved_scopes) 4518 { 4519 d_print_error (dpi); 4520 return; 4521 } 4522 scope = &dpi->saved_scopes[dpi->next_saved_scope]; 4523 dpi->next_saved_scope++; 4524 4525 scope->container = container; 4526 link = &scope->templates; 4527 4528 for (src = dpi->templates; src != NULL; src = src->next) 4529 { 4530 struct d_print_template *dst; 4531 4532 if (dpi->next_copy_template >= dpi->num_copy_templates) 4533 { 4534 d_print_error (dpi); 4535 return; 4536 } 4537 dst = &dpi->copy_templates[dpi->next_copy_template]; 4538 dpi->next_copy_template++; 4539 4540 dst->template_decl = src->template_decl; 4541 *link = dst; 4542 link = &dst->next; 4543 } 4544 4545 *link = NULL; 4546 } 4547 4548 /* Attempt to locate a previously saved scope. Returns NULL if no 4549 corresponding saved scope was found. */ 4550 4551 static struct d_saved_scope * 4552 d_get_saved_scope (struct d_print_info *dpi, 4553 const struct demangle_component *container) 4554 { 4555 int i; 4556 4557 for (i = 0; i < dpi->next_saved_scope; i++) 4558 if (dpi->saved_scopes[i].container == container) 4559 return &dpi->saved_scopes[i]; 4560 4561 return NULL; 4562 } 4563 4564 /* If DC is a C++17 fold-expression, print it and return true; otherwise 4565 return false. */ 4566 4567 static int 4568 d_maybe_print_fold_expression (struct d_print_info *dpi, int options, 4569 struct demangle_component *dc) 4570 { 4571 struct demangle_component *ops, *operator_, *op1, *op2; 4572 int save_idx; 4573 4574 const char *fold_code = d_left (dc)->u.s_operator.op->code; 4575 if (fold_code[0] != 'f') 4576 return 0; 4577 4578 ops = d_right (dc); 4579 operator_ = d_left (ops); 4580 op1 = d_right (ops); 4581 op2 = 0; 4582 if (op1->type == DEMANGLE_COMPONENT_TRINARY_ARG2) 4583 { 4584 op2 = d_right (op1); 4585 op1 = d_left (op1); 4586 } 4587 4588 /* Print the whole pack. */ 4589 save_idx = dpi->pack_index; 4590 dpi->pack_index = -1; 4591 4592 switch (fold_code[1]) 4593 { 4594 /* Unary left fold, (... + X). */ 4595 case 'l': 4596 d_append_string (dpi, "(..."); 4597 d_print_expr_op (dpi, options, operator_); 4598 d_print_subexpr (dpi, options, op1); 4599 d_append_char (dpi, ')'); 4600 break; 4601 4602 /* Unary right fold, (X + ...). */ 4603 case 'r': 4604 d_append_char (dpi, '('); 4605 d_print_subexpr (dpi, options, op1); 4606 d_print_expr_op (dpi, options, operator_); 4607 d_append_string (dpi, "...)"); 4608 break; 4609 4610 /* Binary left fold, (42 + ... + X). */ 4611 case 'L': 4612 /* Binary right fold, (X + ... + 42). */ 4613 case 'R': 4614 d_append_char (dpi, '('); 4615 d_print_subexpr (dpi, options, op1); 4616 d_print_expr_op (dpi, options, operator_); 4617 d_append_string (dpi, "..."); 4618 d_print_expr_op (dpi, options, operator_); 4619 d_print_subexpr (dpi, options, op2); 4620 d_append_char (dpi, ')'); 4621 break; 4622 } 4623 4624 dpi->pack_index = save_idx; 4625 return 1; 4626 } 4627 4628 /* Subroutine to handle components. */ 4629 4630 static void 4631 d_print_comp_inner (struct d_print_info *dpi, int options, 4632 struct demangle_component *dc) 4633 { 4634 /* Magic variable to let reference smashing skip over the next modifier 4635 without needing to modify *dc. */ 4636 struct demangle_component *mod_inner = NULL; 4637 4638 /* Variable used to store the current templates while a previously 4639 captured scope is used. */ 4640 struct d_print_template *saved_templates = NULL; /* silence GCC */ 4641 4642 /* Nonzero if templates have been stored in the above variable. */ 4643 int need_template_restore = 0; 4644 4645 if (dc == NULL) 4646 { 4647 d_print_error (dpi); 4648 return; 4649 } 4650 if (d_print_saw_error (dpi)) 4651 return; 4652 4653 switch (dc->type) 4654 { 4655 case DEMANGLE_COMPONENT_NAME: 4656 if ((options & DMGL_JAVA) == 0) 4657 d_append_buffer (dpi, dc->u.s_name.s, dc->u.s_name.len); 4658 else 4659 d_print_java_identifier (dpi, dc->u.s_name.s, dc->u.s_name.len); 4660 return; 4661 4662 case DEMANGLE_COMPONENT_TAGGED_NAME: 4663 d_print_comp (dpi, options, d_left (dc)); 4664 d_append_string (dpi, "[abi:"); 4665 d_print_comp (dpi, options, d_right (dc)); 4666 d_append_char (dpi, ']'); 4667 return; 4668 4669 case DEMANGLE_COMPONENT_QUAL_NAME: 4670 case DEMANGLE_COMPONENT_LOCAL_NAME: 4671 d_print_comp (dpi, options, d_left (dc)); 4672 if ((options & DMGL_JAVA) == 0) 4673 d_append_string (dpi, "::"); 4674 else 4675 d_append_char (dpi, '.'); 4676 { 4677 struct demangle_component *local_name = d_right (dc); 4678 if (local_name->type == DEMANGLE_COMPONENT_DEFAULT_ARG) 4679 { 4680 d_append_string (dpi, "{default arg#"); 4681 d_append_num (dpi, local_name->u.s_unary_num.num + 1); 4682 d_append_string (dpi, "}::"); 4683 local_name = local_name->u.s_unary_num.sub; 4684 } 4685 d_print_comp (dpi, options, local_name); 4686 } 4687 return; 4688 4689 case DEMANGLE_COMPONENT_TYPED_NAME: 4690 { 4691 struct d_print_mod *hold_modifiers; 4692 struct demangle_component *typed_name; 4693 struct d_print_mod adpm[4]; 4694 unsigned int i; 4695 struct d_print_template dpt; 4696 4697 /* Pass the name down to the type so that it can be printed in 4698 the right place for the type. We also have to pass down 4699 any CV-qualifiers, which apply to the this parameter. */ 4700 hold_modifiers = dpi->modifiers; 4701 dpi->modifiers = 0; 4702 i = 0; 4703 typed_name = d_left (dc); 4704 while (typed_name != NULL) 4705 { 4706 if (i >= sizeof adpm / sizeof adpm[0]) 4707 { 4708 d_print_error (dpi); 4709 return; 4710 } 4711 4712 adpm[i].next = dpi->modifiers; 4713 dpi->modifiers = &adpm[i]; 4714 adpm[i].mod = typed_name; 4715 adpm[i].printed = 0; 4716 adpm[i].templates = dpi->templates; 4717 ++i; 4718 4719 if (!is_fnqual_component_type (typed_name->type)) 4720 break; 4721 4722 typed_name = d_left (typed_name); 4723 } 4724 4725 if (typed_name == NULL) 4726 { 4727 d_print_error (dpi); 4728 return; 4729 } 4730 4731 /* If typed_name is a template, then it applies to the 4732 function type as well. */ 4733 if (typed_name->type == DEMANGLE_COMPONENT_TEMPLATE) 4734 { 4735 dpt.next = dpi->templates; 4736 dpi->templates = &dpt; 4737 dpt.template_decl = typed_name; 4738 } 4739 4740 /* If typed_name is a DEMANGLE_COMPONENT_LOCAL_NAME, then 4741 there may be CV-qualifiers on its right argument which 4742 really apply here; this happens when parsing a class which 4743 is local to a function. */ 4744 if (typed_name->type == DEMANGLE_COMPONENT_LOCAL_NAME) 4745 { 4746 struct demangle_component *local_name; 4747 4748 local_name = d_right (typed_name); 4749 if (local_name->type == DEMANGLE_COMPONENT_DEFAULT_ARG) 4750 local_name = local_name->u.s_unary_num.sub; 4751 if (local_name == NULL) 4752 { 4753 d_print_error (dpi); 4754 return; 4755 } 4756 while (is_fnqual_component_type (local_name->type)) 4757 { 4758 if (i >= sizeof adpm / sizeof adpm[0]) 4759 { 4760 d_print_error (dpi); 4761 return; 4762 } 4763 4764 adpm[i] = adpm[i - 1]; 4765 adpm[i].next = &adpm[i - 1]; 4766 dpi->modifiers = &adpm[i]; 4767 4768 adpm[i - 1].mod = local_name; 4769 adpm[i - 1].printed = 0; 4770 adpm[i - 1].templates = dpi->templates; 4771 ++i; 4772 4773 local_name = d_left (local_name); 4774 } 4775 } 4776 4777 d_print_comp (dpi, options, d_right (dc)); 4778 4779 if (typed_name->type == DEMANGLE_COMPONENT_TEMPLATE) 4780 dpi->templates = dpt.next; 4781 4782 /* If the modifiers didn't get printed by the type, print them 4783 now. */ 4784 while (i > 0) 4785 { 4786 --i; 4787 if (! adpm[i].printed) 4788 { 4789 d_append_char (dpi, ' '); 4790 d_print_mod (dpi, options, adpm[i].mod); 4791 } 4792 } 4793 4794 dpi->modifiers = hold_modifiers; 4795 4796 return; 4797 } 4798 4799 case DEMANGLE_COMPONENT_TEMPLATE: 4800 { 4801 struct d_print_mod *hold_dpm; 4802 struct demangle_component *dcl; 4803 const struct demangle_component *hold_current; 4804 4805 /* This template may need to be referenced by a cast operator 4806 contained in its subtree. */ 4807 hold_current = dpi->current_template; 4808 dpi->current_template = dc; 4809 4810 /* Don't push modifiers into a template definition. Doing so 4811 could give the wrong definition for a template argument. 4812 Instead, treat the template essentially as a name. */ 4813 4814 hold_dpm = dpi->modifiers; 4815 dpi->modifiers = NULL; 4816 4817 dcl = d_left (dc); 4818 4819 if ((options & DMGL_JAVA) != 0 4820 && dcl->type == DEMANGLE_COMPONENT_NAME 4821 && dcl->u.s_name.len == 6 4822 && strncmp (dcl->u.s_name.s, "JArray", 6) == 0) 4823 { 4824 /* Special-case Java arrays, so that JArray<TYPE> appears 4825 instead as TYPE[]. */ 4826 4827 d_print_comp (dpi, options, d_right (dc)); 4828 d_append_string (dpi, "[]"); 4829 } 4830 else 4831 { 4832 d_print_comp (dpi, options, dcl); 4833 if (d_last_char (dpi) == '<') 4834 d_append_char (dpi, ' '); 4835 d_append_char (dpi, '<'); 4836 d_print_comp (dpi, options, d_right (dc)); 4837 /* Avoid generating two consecutive '>' characters, to avoid 4838 the C++ syntactic ambiguity. */ 4839 if (d_last_char (dpi) == '>') 4840 d_append_char (dpi, ' '); 4841 d_append_char (dpi, '>'); 4842 } 4843 4844 dpi->modifiers = hold_dpm; 4845 dpi->current_template = hold_current; 4846 4847 return; 4848 } 4849 4850 case DEMANGLE_COMPONENT_TEMPLATE_PARAM: 4851 if (dpi->is_lambda_arg) 4852 { 4853 /* Show the template parm index, as that's how g++ displays 4854 these, and future proofs us against potential 4855 '[]<typename T> (T *a, T *b) {...}'. */ 4856 d_append_buffer (dpi, "auto:", 5); 4857 d_append_num (dpi, dc->u.s_number.number + 1); 4858 } 4859 else 4860 { 4861 struct d_print_template *hold_dpt; 4862 struct demangle_component *a = d_lookup_template_argument (dpi, dc); 4863 4864 if (a && a->type == DEMANGLE_COMPONENT_TEMPLATE_ARGLIST) 4865 a = d_index_template_argument (a, dpi->pack_index); 4866 4867 if (a == NULL) 4868 { 4869 d_print_error (dpi); 4870 return; 4871 } 4872 4873 /* While processing this parameter, we need to pop the list 4874 of templates. This is because the template parameter may 4875 itself be a reference to a parameter of an outer 4876 template. */ 4877 4878 hold_dpt = dpi->templates; 4879 dpi->templates = hold_dpt->next; 4880 4881 d_print_comp (dpi, options, a); 4882 4883 dpi->templates = hold_dpt; 4884 } 4885 return; 4886 4887 case DEMANGLE_COMPONENT_CTOR: 4888 d_print_comp (dpi, options, dc->u.s_ctor.name); 4889 return; 4890 4891 case DEMANGLE_COMPONENT_DTOR: 4892 d_append_char (dpi, '~'); 4893 d_print_comp (dpi, options, dc->u.s_dtor.name); 4894 return; 4895 4896 case DEMANGLE_COMPONENT_VTABLE: 4897 d_append_string (dpi, "vtable for "); 4898 d_print_comp (dpi, options, d_left (dc)); 4899 return; 4900 4901 case DEMANGLE_COMPONENT_VTT: 4902 d_append_string (dpi, "VTT for "); 4903 d_print_comp (dpi, options, d_left (dc)); 4904 return; 4905 4906 case DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE: 4907 d_append_string (dpi, "construction vtable for "); 4908 d_print_comp (dpi, options, d_left (dc)); 4909 d_append_string (dpi, "-in-"); 4910 d_print_comp (dpi, options, d_right (dc)); 4911 return; 4912 4913 case DEMANGLE_COMPONENT_TYPEINFO: 4914 d_append_string (dpi, "typeinfo for "); 4915 d_print_comp (dpi, options, d_left (dc)); 4916 return; 4917 4918 case DEMANGLE_COMPONENT_TYPEINFO_NAME: 4919 d_append_string (dpi, "typeinfo name for "); 4920 d_print_comp (dpi, options, d_left (dc)); 4921 return; 4922 4923 case DEMANGLE_COMPONENT_TYPEINFO_FN: 4924 d_append_string (dpi, "typeinfo fn for "); 4925 d_print_comp (dpi, options, d_left (dc)); 4926 return; 4927 4928 case DEMANGLE_COMPONENT_THUNK: 4929 d_append_string (dpi, "non-virtual thunk to "); 4930 d_print_comp (dpi, options, d_left (dc)); 4931 return; 4932 4933 case DEMANGLE_COMPONENT_VIRTUAL_THUNK: 4934 d_append_string (dpi, "virtual thunk to "); 4935 d_print_comp (dpi, options, d_left (dc)); 4936 return; 4937 4938 case DEMANGLE_COMPONENT_COVARIANT_THUNK: 4939 d_append_string (dpi, "covariant return thunk to "); 4940 d_print_comp (dpi, options, d_left (dc)); 4941 return; 4942 4943 case DEMANGLE_COMPONENT_JAVA_CLASS: 4944 d_append_string (dpi, "java Class for "); 4945 d_print_comp (dpi, options, d_left (dc)); 4946 return; 4947 4948 case DEMANGLE_COMPONENT_GUARD: 4949 d_append_string (dpi, "guard variable for "); 4950 d_print_comp (dpi, options, d_left (dc)); 4951 return; 4952 4953 case DEMANGLE_COMPONENT_TLS_INIT: 4954 d_append_string (dpi, "TLS init function for "); 4955 d_print_comp (dpi, options, d_left (dc)); 4956 return; 4957 4958 case DEMANGLE_COMPONENT_TLS_WRAPPER: 4959 d_append_string (dpi, "TLS wrapper function for "); 4960 d_print_comp (dpi, options, d_left (dc)); 4961 return; 4962 4963 case DEMANGLE_COMPONENT_REFTEMP: 4964 d_append_string (dpi, "reference temporary #"); 4965 d_print_comp (dpi, options, d_right (dc)); 4966 d_append_string (dpi, " for "); 4967 d_print_comp (dpi, options, d_left (dc)); 4968 return; 4969 4970 case DEMANGLE_COMPONENT_HIDDEN_ALIAS: 4971 d_append_string (dpi, "hidden alias for "); 4972 d_print_comp (dpi, options, d_left (dc)); 4973 return; 4974 4975 case DEMANGLE_COMPONENT_TRANSACTION_CLONE: 4976 d_append_string (dpi, "transaction clone for "); 4977 d_print_comp (dpi, options, d_left (dc)); 4978 return; 4979 4980 case DEMANGLE_COMPONENT_NONTRANSACTION_CLONE: 4981 d_append_string (dpi, "non-transaction clone for "); 4982 d_print_comp (dpi, options, d_left (dc)); 4983 return; 4984 4985 case DEMANGLE_COMPONENT_SUB_STD: 4986 d_append_buffer (dpi, dc->u.s_string.string, dc->u.s_string.len); 4987 return; 4988 4989 case DEMANGLE_COMPONENT_RESTRICT: 4990 case DEMANGLE_COMPONENT_VOLATILE: 4991 case DEMANGLE_COMPONENT_CONST: 4992 { 4993 struct d_print_mod *pdpm; 4994 4995 /* When printing arrays, it's possible to have cases where the 4996 same CV-qualifier gets pushed on the stack multiple times. 4997 We only need to print it once. */ 4998 4999 for (pdpm = dpi->modifiers; pdpm != NULL; pdpm = pdpm->next) 5000 { 5001 if (! pdpm->printed) 5002 { 5003 if (pdpm->mod->type != DEMANGLE_COMPONENT_RESTRICT 5004 && pdpm->mod->type != DEMANGLE_COMPONENT_VOLATILE 5005 && pdpm->mod->type != DEMANGLE_COMPONENT_CONST) 5006 break; 5007 if (pdpm->mod->type == dc->type) 5008 { 5009 d_print_comp (dpi, options, d_left (dc)); 5010 return; 5011 } 5012 } 5013 } 5014 } 5015 goto modifier; 5016 5017 case DEMANGLE_COMPONENT_REFERENCE: 5018 case DEMANGLE_COMPONENT_RVALUE_REFERENCE: 5019 { 5020 /* Handle reference smashing: & + && = &. */ 5021 struct demangle_component *sub = d_left (dc); 5022 if (!dpi->is_lambda_arg 5023 && sub->type == DEMANGLE_COMPONENT_TEMPLATE_PARAM) 5024 { 5025 struct d_saved_scope *scope = d_get_saved_scope (dpi, sub); 5026 struct demangle_component *a; 5027 5028 if (scope == NULL) 5029 { 5030 /* This is the first time SUB has been traversed. 5031 We need to capture the current templates so 5032 they can be restored if SUB is reentered as a 5033 substitution. */ 5034 d_save_scope (dpi, sub); 5035 if (d_print_saw_error (dpi)) 5036 return; 5037 } 5038 else 5039 { 5040 const struct d_component_stack *dcse; 5041 int found_self_or_parent = 0; 5042 5043 /* This traversal is reentering SUB as a substition. 5044 If we are not beneath SUB or DC in the tree then we 5045 need to restore SUB's template stack temporarily. */ 5046 for (dcse = dpi->component_stack; dcse != NULL; 5047 dcse = dcse->parent) 5048 { 5049 if (dcse->dc == sub 5050 || (dcse->dc == dc 5051 && dcse != dpi->component_stack)) 5052 { 5053 found_self_or_parent = 1; 5054 break; 5055 } 5056 } 5057 5058 if (!found_self_or_parent) 5059 { 5060 saved_templates = dpi->templates; 5061 dpi->templates = scope->templates; 5062 need_template_restore = 1; 5063 } 5064 } 5065 5066 a = d_lookup_template_argument (dpi, sub); 5067 if (a && a->type == DEMANGLE_COMPONENT_TEMPLATE_ARGLIST) 5068 a = d_index_template_argument (a, dpi->pack_index); 5069 5070 if (a == NULL) 5071 { 5072 if (need_template_restore) 5073 dpi->templates = saved_templates; 5074 5075 d_print_error (dpi); 5076 return; 5077 } 5078 5079 sub = a; 5080 } 5081 5082 if (sub->type == DEMANGLE_COMPONENT_REFERENCE 5083 || sub->type == dc->type) 5084 dc = sub; 5085 else if (sub->type == DEMANGLE_COMPONENT_RVALUE_REFERENCE) 5086 mod_inner = d_left (sub); 5087 } 5088 /* Fall through. */ 5089 5090 case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL: 5091 case DEMANGLE_COMPONENT_POINTER: 5092 case DEMANGLE_COMPONENT_COMPLEX: 5093 case DEMANGLE_COMPONENT_IMAGINARY: 5094 FNQUAL_COMPONENT_CASE: 5095 modifier: 5096 { 5097 /* We keep a list of modifiers on the stack. */ 5098 struct d_print_mod dpm; 5099 5100 dpm.next = dpi->modifiers; 5101 dpi->modifiers = &dpm; 5102 dpm.mod = dc; 5103 dpm.printed = 0; 5104 dpm.templates = dpi->templates; 5105 5106 if (!mod_inner) 5107 mod_inner = d_left (dc); 5108 5109 d_print_comp (dpi, options, mod_inner); 5110 5111 /* If the modifier didn't get printed by the type, print it 5112 now. */ 5113 if (! dpm.printed) 5114 d_print_mod (dpi, options, dc); 5115 5116 dpi->modifiers = dpm.next; 5117 5118 if (need_template_restore) 5119 dpi->templates = saved_templates; 5120 5121 return; 5122 } 5123 5124 case DEMANGLE_COMPONENT_BUILTIN_TYPE: 5125 if ((options & DMGL_JAVA) == 0) 5126 d_append_buffer (dpi, dc->u.s_builtin.type->name, 5127 dc->u.s_builtin.type->len); 5128 else 5129 d_append_buffer (dpi, dc->u.s_builtin.type->java_name, 5130 dc->u.s_builtin.type->java_len); 5131 return; 5132 5133 case DEMANGLE_COMPONENT_VENDOR_TYPE: 5134 d_print_comp (dpi, options, d_left (dc)); 5135 return; 5136 5137 case DEMANGLE_COMPONENT_FUNCTION_TYPE: 5138 { 5139 if ((options & DMGL_RET_POSTFIX) != 0) 5140 d_print_function_type (dpi, 5141 options & ~(DMGL_RET_POSTFIX | DMGL_RET_DROP), 5142 dc, dpi->modifiers); 5143 5144 /* Print return type if present */ 5145 if (d_left (dc) != NULL && (options & DMGL_RET_POSTFIX) != 0) 5146 d_print_comp (dpi, options & ~(DMGL_RET_POSTFIX | DMGL_RET_DROP), 5147 d_left (dc)); 5148 else if (d_left (dc) != NULL && (options & DMGL_RET_DROP) == 0) 5149 { 5150 struct d_print_mod dpm; 5151 5152 /* We must pass this type down as a modifier in order to 5153 print it in the right location. */ 5154 dpm.next = dpi->modifiers; 5155 dpi->modifiers = &dpm; 5156 dpm.mod = dc; 5157 dpm.printed = 0; 5158 dpm.templates = dpi->templates; 5159 5160 d_print_comp (dpi, options & ~(DMGL_RET_POSTFIX | DMGL_RET_DROP), 5161 d_left (dc)); 5162 5163 dpi->modifiers = dpm.next; 5164 5165 if (dpm.printed) 5166 return; 5167 5168 /* In standard prefix notation, there is a space between the 5169 return type and the function signature. */ 5170 if ((options & DMGL_RET_POSTFIX) == 0) 5171 d_append_char (dpi, ' '); 5172 } 5173 5174 if ((options & DMGL_RET_POSTFIX) == 0) 5175 d_print_function_type (dpi, 5176 options & ~(DMGL_RET_POSTFIX | DMGL_RET_DROP), 5177 dc, dpi->modifiers); 5178 5179 return; 5180 } 5181 5182 case DEMANGLE_COMPONENT_ARRAY_TYPE: 5183 { 5184 struct d_print_mod *hold_modifiers; 5185 struct d_print_mod adpm[4]; 5186 unsigned int i; 5187 struct d_print_mod *pdpm; 5188 5189 /* We must pass this type down as a modifier in order to print 5190 multi-dimensional arrays correctly. If the array itself is 5191 CV-qualified, we act as though the element type were 5192 CV-qualified. We do this by copying the modifiers down 5193 rather than fiddling pointers, so that we don't wind up 5194 with a d_print_mod higher on the stack pointing into our 5195 stack frame after we return. */ 5196 5197 hold_modifiers = dpi->modifiers; 5198 5199 adpm[0].next = hold_modifiers; 5200 dpi->modifiers = &adpm[0]; 5201 adpm[0].mod = dc; 5202 adpm[0].printed = 0; 5203 adpm[0].templates = dpi->templates; 5204 5205 i = 1; 5206 pdpm = hold_modifiers; 5207 while (pdpm != NULL 5208 && (pdpm->mod->type == DEMANGLE_COMPONENT_RESTRICT 5209 || pdpm->mod->type == DEMANGLE_COMPONENT_VOLATILE 5210 || pdpm->mod->type == DEMANGLE_COMPONENT_CONST)) 5211 { 5212 if (! pdpm->printed) 5213 { 5214 if (i >= sizeof adpm / sizeof adpm[0]) 5215 { 5216 d_print_error (dpi); 5217 return; 5218 } 5219 5220 adpm[i] = *pdpm; 5221 adpm[i].next = dpi->modifiers; 5222 dpi->modifiers = &adpm[i]; 5223 pdpm->printed = 1; 5224 ++i; 5225 } 5226 5227 pdpm = pdpm->next; 5228 } 5229 5230 d_print_comp (dpi, options, d_right (dc)); 5231 5232 dpi->modifiers = hold_modifiers; 5233 5234 if (adpm[0].printed) 5235 return; 5236 5237 while (i > 1) 5238 { 5239 --i; 5240 d_print_mod (dpi, options, adpm[i].mod); 5241 } 5242 5243 d_print_array_type (dpi, options, dc, dpi->modifiers); 5244 5245 return; 5246 } 5247 5248 case DEMANGLE_COMPONENT_PTRMEM_TYPE: 5249 case DEMANGLE_COMPONENT_VECTOR_TYPE: 5250 { 5251 struct d_print_mod dpm; 5252 5253 dpm.next = dpi->modifiers; 5254 dpi->modifiers = &dpm; 5255 dpm.mod = dc; 5256 dpm.printed = 0; 5257 dpm.templates = dpi->templates; 5258 5259 d_print_comp (dpi, options, d_right (dc)); 5260 5261 /* If the modifier didn't get printed by the type, print it 5262 now. */ 5263 if (! dpm.printed) 5264 d_print_mod (dpi, options, dc); 5265 5266 dpi->modifiers = dpm.next; 5267 5268 return; 5269 } 5270 5271 case DEMANGLE_COMPONENT_FIXED_TYPE: 5272 if (dc->u.s_fixed.sat) 5273 d_append_string (dpi, "_Sat "); 5274 /* Don't print "int _Accum". */ 5275 if (dc->u.s_fixed.length->u.s_builtin.type 5276 != &cplus_demangle_builtin_types['i'-'a']) 5277 { 5278 d_print_comp (dpi, options, dc->u.s_fixed.length); 5279 d_append_char (dpi, ' '); 5280 } 5281 if (dc->u.s_fixed.accum) 5282 d_append_string (dpi, "_Accum"); 5283 else 5284 d_append_string (dpi, "_Fract"); 5285 return; 5286 5287 case DEMANGLE_COMPONENT_ARGLIST: 5288 case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST: 5289 if (d_left (dc) != NULL) 5290 d_print_comp (dpi, options, d_left (dc)); 5291 if (d_right (dc) != NULL) 5292 { 5293 size_t len; 5294 unsigned long int flush_count; 5295 /* Make sure ", " isn't flushed by d_append_string, otherwise 5296 dpi->len -= 2 wouldn't work. */ 5297 if (dpi->len >= sizeof (dpi->buf) - 2) 5298 d_print_flush (dpi); 5299 d_append_string (dpi, ", "); 5300 len = dpi->len; 5301 flush_count = dpi->flush_count; 5302 d_print_comp (dpi, options, d_right (dc)); 5303 /* If that didn't print anything (which can happen with empty 5304 template argument packs), remove the comma and space. */ 5305 if (dpi->flush_count == flush_count && dpi->len == len) 5306 dpi->len -= 2; 5307 } 5308 return; 5309 5310 case DEMANGLE_COMPONENT_INITIALIZER_LIST: 5311 { 5312 struct demangle_component *type = d_left (dc); 5313 struct demangle_component *list = d_right (dc); 5314 5315 if (type) 5316 d_print_comp (dpi, options, type); 5317 d_append_char (dpi, '{'); 5318 d_print_comp (dpi, options, list); 5319 d_append_char (dpi, '}'); 5320 } 5321 return; 5322 5323 case DEMANGLE_COMPONENT_OPERATOR: 5324 { 5325 const struct demangle_operator_info *op = dc->u.s_operator.op; 5326 int len = op->len; 5327 5328 d_append_string (dpi, "operator"); 5329 /* Add a space before new/delete. */ 5330 if (IS_LOWER (op->name[0])) 5331 d_append_char (dpi, ' '); 5332 /* Omit a trailing space. */ 5333 if (op->name[len-1] == ' ') 5334 --len; 5335 d_append_buffer (dpi, op->name, len); 5336 return; 5337 } 5338 5339 case DEMANGLE_COMPONENT_EXTENDED_OPERATOR: 5340 d_append_string (dpi, "operator "); 5341 d_print_comp (dpi, options, dc->u.s_extended_operator.name); 5342 return; 5343 5344 case DEMANGLE_COMPONENT_CONVERSION: 5345 d_append_string (dpi, "operator "); 5346 d_print_conversion (dpi, options, dc); 5347 return; 5348 5349 case DEMANGLE_COMPONENT_NULLARY: 5350 d_print_expr_op (dpi, options, d_left (dc)); 5351 return; 5352 5353 case DEMANGLE_COMPONENT_UNARY: 5354 { 5355 struct demangle_component *op = d_left (dc); 5356 struct demangle_component *operand = d_right (dc); 5357 const char *code = NULL; 5358 5359 if (op->type == DEMANGLE_COMPONENT_OPERATOR) 5360 { 5361 code = op->u.s_operator.op->code; 5362 if (!strcmp (code, "ad")) 5363 { 5364 /* Don't print the argument list for the address of a 5365 function. */ 5366 if (operand->type == DEMANGLE_COMPONENT_TYPED_NAME 5367 && d_left (operand)->type == DEMANGLE_COMPONENT_QUAL_NAME 5368 && d_right (operand)->type == DEMANGLE_COMPONENT_FUNCTION_TYPE) 5369 operand = d_left (operand); 5370 } 5371 if (operand->type == DEMANGLE_COMPONENT_BINARY_ARGS) 5372 { 5373 /* This indicates a suffix operator. */ 5374 operand = d_left (operand); 5375 d_print_subexpr (dpi, options, operand); 5376 d_print_expr_op (dpi, options, op); 5377 return; 5378 } 5379 } 5380 5381 /* For sizeof..., just print the pack length. */ 5382 if (code && !strcmp (code, "sZ")) 5383 { 5384 struct demangle_component *a = d_find_pack (dpi, operand); 5385 int len = d_pack_length (a); 5386 d_append_num (dpi, len); 5387 return; 5388 } 5389 else if (code && !strcmp (code, "sP")) 5390 { 5391 int len = d_args_length (dpi, operand); 5392 d_append_num (dpi, len); 5393 return; 5394 } 5395 5396 if (op->type != DEMANGLE_COMPONENT_CAST) 5397 d_print_expr_op (dpi, options, op); 5398 else 5399 { 5400 d_append_char (dpi, '('); 5401 d_print_cast (dpi, options, op); 5402 d_append_char (dpi, ')'); 5403 } 5404 if (code && !strcmp (code, "gs")) 5405 /* Avoid parens after '::'. */ 5406 d_print_comp (dpi, options, operand); 5407 else if (code && !strcmp (code, "st")) 5408 /* Always print parens for sizeof (type). */ 5409 { 5410 d_append_char (dpi, '('); 5411 d_print_comp (dpi, options, operand); 5412 d_append_char (dpi, ')'); 5413 } 5414 else 5415 d_print_subexpr (dpi, options, operand); 5416 } 5417 return; 5418 5419 case DEMANGLE_COMPONENT_BINARY: 5420 if (d_right (dc)->type != DEMANGLE_COMPONENT_BINARY_ARGS) 5421 { 5422 d_print_error (dpi); 5423 return; 5424 } 5425 5426 if (op_is_new_cast (d_left (dc))) 5427 { 5428 d_print_expr_op (dpi, options, d_left (dc)); 5429 d_append_char (dpi, '<'); 5430 d_print_comp (dpi, options, d_left (d_right (dc))); 5431 d_append_string (dpi, ">("); 5432 d_print_comp (dpi, options, d_right (d_right (dc))); 5433 d_append_char (dpi, ')'); 5434 return; 5435 } 5436 5437 if (d_maybe_print_fold_expression (dpi, options, dc)) 5438 return; 5439 5440 /* We wrap an expression which uses the greater-than operator in 5441 an extra layer of parens so that it does not get confused 5442 with the '>' which ends the template parameters. */ 5443 if (d_left (dc)->type == DEMANGLE_COMPONENT_OPERATOR 5444 && d_left (dc)->u.s_operator.op->len == 1 5445 && d_left (dc)->u.s_operator.op->name[0] == '>') 5446 d_append_char (dpi, '('); 5447 5448 if (strcmp (d_left (dc)->u.s_operator.op->code, "cl") == 0 5449 && d_left (d_right (dc))->type == DEMANGLE_COMPONENT_TYPED_NAME) 5450 { 5451 /* Function call used in an expression should not have printed types 5452 of the function arguments. Values of the function arguments still 5453 get printed below. */ 5454 5455 const struct demangle_component *func = d_left (d_right (dc)); 5456 5457 if (d_right (func)->type != DEMANGLE_COMPONENT_FUNCTION_TYPE) 5458 d_print_error (dpi); 5459 d_print_subexpr (dpi, options, d_left (func)); 5460 } 5461 else 5462 d_print_subexpr (dpi, options, d_left (d_right (dc))); 5463 if (strcmp (d_left (dc)->u.s_operator.op->code, "ix") == 0) 5464 { 5465 d_append_char (dpi, '['); 5466 d_print_comp (dpi, options, d_right (d_right (dc))); 5467 d_append_char (dpi, ']'); 5468 } 5469 else 5470 { 5471 if (strcmp (d_left (dc)->u.s_operator.op->code, "cl") != 0) 5472 d_print_expr_op (dpi, options, d_left (dc)); 5473 d_print_subexpr (dpi, options, d_right (d_right (dc))); 5474 } 5475 5476 if (d_left (dc)->type == DEMANGLE_COMPONENT_OPERATOR 5477 && d_left (dc)->u.s_operator.op->len == 1 5478 && d_left (dc)->u.s_operator.op->name[0] == '>') 5479 d_append_char (dpi, ')'); 5480 5481 return; 5482 5483 case DEMANGLE_COMPONENT_BINARY_ARGS: 5484 /* We should only see this as part of DEMANGLE_COMPONENT_BINARY. */ 5485 d_print_error (dpi); 5486 return; 5487 5488 case DEMANGLE_COMPONENT_TRINARY: 5489 if (d_right (dc)->type != DEMANGLE_COMPONENT_TRINARY_ARG1 5490 || d_right (d_right (dc))->type != DEMANGLE_COMPONENT_TRINARY_ARG2) 5491 { 5492 d_print_error (dpi); 5493 return; 5494 } 5495 if (d_maybe_print_fold_expression (dpi, options, dc)) 5496 return; 5497 { 5498 struct demangle_component *op = d_left (dc); 5499 struct demangle_component *first = d_left (d_right (dc)); 5500 struct demangle_component *second = d_left (d_right (d_right (dc))); 5501 struct demangle_component *third = d_right (d_right (d_right (dc))); 5502 5503 if (!strcmp (op->u.s_operator.op->code, "qu")) 5504 { 5505 d_print_subexpr (dpi, options, first); 5506 d_print_expr_op (dpi, options, op); 5507 d_print_subexpr (dpi, options, second); 5508 d_append_string (dpi, " : "); 5509 d_print_subexpr (dpi, options, third); 5510 } 5511 else 5512 { 5513 d_append_string (dpi, "new "); 5514 if (d_left (first) != NULL) 5515 { 5516 d_print_subexpr (dpi, options, first); 5517 d_append_char (dpi, ' '); 5518 } 5519 d_print_comp (dpi, options, second); 5520 if (third) 5521 d_print_subexpr (dpi, options, third); 5522 } 5523 } 5524 return; 5525 5526 case DEMANGLE_COMPONENT_TRINARY_ARG1: 5527 case DEMANGLE_COMPONENT_TRINARY_ARG2: 5528 /* We should only see these are part of DEMANGLE_COMPONENT_TRINARY. */ 5529 d_print_error (dpi); 5530 return; 5531 5532 case DEMANGLE_COMPONENT_LITERAL: 5533 case DEMANGLE_COMPONENT_LITERAL_NEG: 5534 { 5535 enum d_builtin_type_print tp; 5536 5537 /* For some builtin types, produce simpler output. */ 5538 tp = D_PRINT_DEFAULT; 5539 if (d_left (dc)->type == DEMANGLE_COMPONENT_BUILTIN_TYPE) 5540 { 5541 tp = d_left (dc)->u.s_builtin.type->print; 5542 switch (tp) 5543 { 5544 case D_PRINT_INT: 5545 case D_PRINT_UNSIGNED: 5546 case D_PRINT_LONG: 5547 case D_PRINT_UNSIGNED_LONG: 5548 case D_PRINT_LONG_LONG: 5549 case D_PRINT_UNSIGNED_LONG_LONG: 5550 if (d_right (dc)->type == DEMANGLE_COMPONENT_NAME) 5551 { 5552 if (dc->type == DEMANGLE_COMPONENT_LITERAL_NEG) 5553 d_append_char (dpi, '-'); 5554 d_print_comp (dpi, options, d_right (dc)); 5555 switch (tp) 5556 { 5557 default: 5558 break; 5559 case D_PRINT_UNSIGNED: 5560 d_append_char (dpi, 'u'); 5561 break; 5562 case D_PRINT_LONG: 5563 d_append_char (dpi, 'l'); 5564 break; 5565 case D_PRINT_UNSIGNED_LONG: 5566 d_append_string (dpi, "ul"); 5567 break; 5568 case D_PRINT_LONG_LONG: 5569 d_append_string (dpi, "ll"); 5570 break; 5571 case D_PRINT_UNSIGNED_LONG_LONG: 5572 d_append_string (dpi, "ull"); 5573 break; 5574 } 5575 return; 5576 } 5577 break; 5578 5579 case D_PRINT_BOOL: 5580 if (d_right (dc)->type == DEMANGLE_COMPONENT_NAME 5581 && d_right (dc)->u.s_name.len == 1 5582 && dc->type == DEMANGLE_COMPONENT_LITERAL) 5583 { 5584 switch (d_right (dc)->u.s_name.s[0]) 5585 { 5586 case '0': 5587 d_append_string (dpi, "false"); 5588 return; 5589 case '1': 5590 d_append_string (dpi, "true"); 5591 return; 5592 default: 5593 break; 5594 } 5595 } 5596 break; 5597 5598 default: 5599 break; 5600 } 5601 } 5602 5603 d_append_char (dpi, '('); 5604 d_print_comp (dpi, options, d_left (dc)); 5605 d_append_char (dpi, ')'); 5606 if (dc->type == DEMANGLE_COMPONENT_LITERAL_NEG) 5607 d_append_char (dpi, '-'); 5608 if (tp == D_PRINT_FLOAT) 5609 d_append_char (dpi, '['); 5610 d_print_comp (dpi, options, d_right (dc)); 5611 if (tp == D_PRINT_FLOAT) 5612 d_append_char (dpi, ']'); 5613 } 5614 return; 5615 5616 case DEMANGLE_COMPONENT_NUMBER: 5617 d_append_num (dpi, dc->u.s_number.number); 5618 return; 5619 5620 case DEMANGLE_COMPONENT_JAVA_RESOURCE: 5621 d_append_string (dpi, "java resource "); 5622 d_print_comp (dpi, options, d_left (dc)); 5623 return; 5624 5625 case DEMANGLE_COMPONENT_COMPOUND_NAME: 5626 d_print_comp (dpi, options, d_left (dc)); 5627 d_print_comp (dpi, options, d_right (dc)); 5628 return; 5629 5630 case DEMANGLE_COMPONENT_CHARACTER: 5631 d_append_char (dpi, dc->u.s_character.character); 5632 return; 5633 5634 case DEMANGLE_COMPONENT_DECLTYPE: 5635 d_append_string (dpi, "decltype ("); 5636 d_print_comp (dpi, options, d_left (dc)); 5637 d_append_char (dpi, ')'); 5638 return; 5639 5640 case DEMANGLE_COMPONENT_PACK_EXPANSION: 5641 { 5642 int len; 5643 int i; 5644 struct demangle_component *a = d_find_pack (dpi, d_left (dc)); 5645 if (a == NULL) 5646 { 5647 /* d_find_pack won't find anything if the only packs involved 5648 in this expansion are function parameter packs; in that 5649 case, just print the pattern and "...". */ 5650 d_print_subexpr (dpi, options, d_left (dc)); 5651 d_append_string (dpi, "..."); 5652 return; 5653 } 5654 5655 len = d_pack_length (a); 5656 dc = d_left (dc); 5657 for (i = 0; i < len; ++i) 5658 { 5659 dpi->pack_index = i; 5660 d_print_comp (dpi, options, dc); 5661 if (i < len-1) 5662 d_append_string (dpi, ", "); 5663 } 5664 } 5665 return; 5666 5667 case DEMANGLE_COMPONENT_FUNCTION_PARAM: 5668 { 5669 long num = dc->u.s_number.number; 5670 if (num == 0) 5671 d_append_string (dpi, "this"); 5672 else 5673 { 5674 d_append_string (dpi, "{parm#"); 5675 d_append_num (dpi, num); 5676 d_append_char (dpi, '}'); 5677 } 5678 } 5679 return; 5680 5681 case DEMANGLE_COMPONENT_GLOBAL_CONSTRUCTORS: 5682 d_append_string (dpi, "global constructors keyed to "); 5683 d_print_comp (dpi, options, dc->u.s_binary.left); 5684 return; 5685 5686 case DEMANGLE_COMPONENT_GLOBAL_DESTRUCTORS: 5687 d_append_string (dpi, "global destructors keyed to "); 5688 d_print_comp (dpi, options, dc->u.s_binary.left); 5689 return; 5690 5691 case DEMANGLE_COMPONENT_LAMBDA: 5692 d_append_string (dpi, "{lambda("); 5693 /* Generic lambda auto parms are mangled as the template type 5694 parm they are. */ 5695 dpi->is_lambda_arg++; 5696 d_print_comp (dpi, options, dc->u.s_unary_num.sub); 5697 dpi->is_lambda_arg--; 5698 d_append_string (dpi, ")#"); 5699 d_append_num (dpi, dc->u.s_unary_num.num + 1); 5700 d_append_char (dpi, '}'); 5701 return; 5702 5703 case DEMANGLE_COMPONENT_UNNAMED_TYPE: 5704 d_append_string (dpi, "{unnamed type#"); 5705 d_append_num (dpi, dc->u.s_number.number + 1); 5706 d_append_char (dpi, '}'); 5707 return; 5708 5709 case DEMANGLE_COMPONENT_CLONE: 5710 d_print_comp (dpi, options, d_left (dc)); 5711 d_append_string (dpi, " [clone "); 5712 d_print_comp (dpi, options, d_right (dc)); 5713 d_append_char (dpi, ']'); 5714 return; 5715 5716 default: 5717 d_print_error (dpi); 5718 return; 5719 } 5720 } 5721 5722 static void 5723 d_print_comp (struct d_print_info *dpi, int options, 5724 struct demangle_component *dc) 5725 { 5726 struct d_component_stack self; 5727 if (dc == NULL || dc->d_printing > 1) 5728 { 5729 d_print_error (dpi); 5730 return; 5731 } 5732 else 5733 dc->d_printing++; 5734 5735 self.dc = dc; 5736 self.parent = dpi->component_stack; 5737 dpi->component_stack = &self; 5738 5739 d_print_comp_inner (dpi, options, dc); 5740 5741 dpi->component_stack = self.parent; 5742 dc->d_printing--; 5743 } 5744 5745 /* Print a Java dentifier. For Java we try to handle encoded extended 5746 Unicode characters. The C++ ABI doesn't mention Unicode encoding, 5747 so we don't it for C++. Characters are encoded as 5748 __U<hex-char>+_. */ 5749 5750 static void 5751 d_print_java_identifier (struct d_print_info *dpi, const char *name, int len) 5752 { 5753 const char *p; 5754 const char *end; 5755 5756 end = name + len; 5757 for (p = name; p < end; ++p) 5758 { 5759 if (end - p > 3 5760 && p[0] == '_' 5761 && p[1] == '_' 5762 && p[2] == 'U') 5763 { 5764 unsigned long c; 5765 const char *q; 5766 5767 c = 0; 5768 for (q = p + 3; q < end; ++q) 5769 { 5770 int dig; 5771 5772 if (IS_DIGIT (*q)) 5773 dig = *q - '0'; 5774 else if (*q >= 'A' && *q <= 'F') 5775 dig = *q - 'A' + 10; 5776 else if (*q >= 'a' && *q <= 'f') 5777 dig = *q - 'a' + 10; 5778 else 5779 break; 5780 5781 c = c * 16 + dig; 5782 } 5783 /* If the Unicode character is larger than 256, we don't try 5784 to deal with it here. FIXME. */ 5785 if (q < end && *q == '_' && c < 256) 5786 { 5787 d_append_char (dpi, c); 5788 p = q; 5789 continue; 5790 } 5791 } 5792 5793 d_append_char (dpi, *p); 5794 } 5795 } 5796 5797 /* Print a list of modifiers. SUFFIX is 1 if we are printing 5798 qualifiers on this after printing a function. */ 5799 5800 static void 5801 d_print_mod_list (struct d_print_info *dpi, int options, 5802 struct d_print_mod *mods, int suffix) 5803 { 5804 struct d_print_template *hold_dpt; 5805 5806 if (mods == NULL || d_print_saw_error (dpi)) 5807 return; 5808 5809 if (mods->printed 5810 || (! suffix 5811 && (is_fnqual_component_type (mods->mod->type)))) 5812 { 5813 d_print_mod_list (dpi, options, mods->next, suffix); 5814 return; 5815 } 5816 5817 mods->printed = 1; 5818 5819 hold_dpt = dpi->templates; 5820 dpi->templates = mods->templates; 5821 5822 if (mods->mod->type == DEMANGLE_COMPONENT_FUNCTION_TYPE) 5823 { 5824 d_print_function_type (dpi, options, mods->mod, mods->next); 5825 dpi->templates = hold_dpt; 5826 return; 5827 } 5828 else if (mods->mod->type == DEMANGLE_COMPONENT_ARRAY_TYPE) 5829 { 5830 d_print_array_type (dpi, options, mods->mod, mods->next); 5831 dpi->templates = hold_dpt; 5832 return; 5833 } 5834 else if (mods->mod->type == DEMANGLE_COMPONENT_LOCAL_NAME) 5835 { 5836 struct d_print_mod *hold_modifiers; 5837 struct demangle_component *dc; 5838 5839 /* When this is on the modifier stack, we have pulled any 5840 qualifiers off the right argument already. Otherwise, we 5841 print it as usual, but don't let the left argument see any 5842 modifiers. */ 5843 5844 hold_modifiers = dpi->modifiers; 5845 dpi->modifiers = NULL; 5846 d_print_comp (dpi, options, d_left (mods->mod)); 5847 dpi->modifiers = hold_modifiers; 5848 5849 if ((options & DMGL_JAVA) == 0) 5850 d_append_string (dpi, "::"); 5851 else 5852 d_append_char (dpi, '.'); 5853 5854 dc = d_right (mods->mod); 5855 5856 if (dc->type == DEMANGLE_COMPONENT_DEFAULT_ARG) 5857 { 5858 d_append_string (dpi, "{default arg#"); 5859 d_append_num (dpi, dc->u.s_unary_num.num + 1); 5860 d_append_string (dpi, "}::"); 5861 dc = dc->u.s_unary_num.sub; 5862 } 5863 5864 while (is_fnqual_component_type (dc->type)) 5865 dc = d_left (dc); 5866 5867 d_print_comp (dpi, options, dc); 5868 5869 dpi->templates = hold_dpt; 5870 return; 5871 } 5872 5873 d_print_mod (dpi, options, mods->mod); 5874 5875 dpi->templates = hold_dpt; 5876 5877 d_print_mod_list (dpi, options, mods->next, suffix); 5878 } 5879 5880 /* Print a modifier. */ 5881 5882 static void 5883 d_print_mod (struct d_print_info *dpi, int options, 5884 struct demangle_component *mod) 5885 { 5886 switch (mod->type) 5887 { 5888 case DEMANGLE_COMPONENT_RESTRICT: 5889 case DEMANGLE_COMPONENT_RESTRICT_THIS: 5890 d_append_string (dpi, " restrict"); 5891 return; 5892 case DEMANGLE_COMPONENT_VOLATILE: 5893 case DEMANGLE_COMPONENT_VOLATILE_THIS: 5894 d_append_string (dpi, " volatile"); 5895 return; 5896 case DEMANGLE_COMPONENT_CONST: 5897 case DEMANGLE_COMPONENT_CONST_THIS: 5898 d_append_string (dpi, " const"); 5899 return; 5900 case DEMANGLE_COMPONENT_TRANSACTION_SAFE: 5901 d_append_string (dpi, " transaction_safe"); 5902 return; 5903 case DEMANGLE_COMPONENT_NOEXCEPT: 5904 d_append_string (dpi, " noexcept"); 5905 if (d_right (mod)) 5906 { 5907 d_append_char (dpi, '('); 5908 d_print_comp (dpi, options, d_right (mod)); 5909 d_append_char (dpi, ')'); 5910 } 5911 return; 5912 case DEMANGLE_COMPONENT_THROW_SPEC: 5913 d_append_string (dpi, " throw"); 5914 if (d_right (mod)) 5915 { 5916 d_append_char (dpi, '('); 5917 d_print_comp (dpi, options, d_right (mod)); 5918 d_append_char (dpi, ')'); 5919 } 5920 return; 5921 case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL: 5922 d_append_char (dpi, ' '); 5923 d_print_comp (dpi, options, d_right (mod)); 5924 return; 5925 case DEMANGLE_COMPONENT_POINTER: 5926 /* There is no pointer symbol in Java. */ 5927 if ((options & DMGL_JAVA) == 0) 5928 d_append_char (dpi, '*'); 5929 return; 5930 case DEMANGLE_COMPONENT_REFERENCE_THIS: 5931 /* For the ref-qualifier, put a space before the &. */ 5932 d_append_char (dpi, ' '); 5933 /* FALLTHRU */ 5934 case DEMANGLE_COMPONENT_REFERENCE: 5935 d_append_char (dpi, '&'); 5936 return; 5937 case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS: 5938 d_append_char (dpi, ' '); 5939 /* FALLTHRU */ 5940 case DEMANGLE_COMPONENT_RVALUE_REFERENCE: 5941 d_append_string (dpi, "&&"); 5942 return; 5943 case DEMANGLE_COMPONENT_COMPLEX: 5944 d_append_string (dpi, "complex "); 5945 return; 5946 case DEMANGLE_COMPONENT_IMAGINARY: 5947 d_append_string (dpi, "imaginary "); 5948 return; 5949 case DEMANGLE_COMPONENT_PTRMEM_TYPE: 5950 if (d_last_char (dpi) != '(') 5951 d_append_char (dpi, ' '); 5952 d_print_comp (dpi, options, d_left (mod)); 5953 d_append_string (dpi, "::*"); 5954 return; 5955 case DEMANGLE_COMPONENT_TYPED_NAME: 5956 d_print_comp (dpi, options, d_left (mod)); 5957 return; 5958 case DEMANGLE_COMPONENT_VECTOR_TYPE: 5959 d_append_string (dpi, " __vector("); 5960 d_print_comp (dpi, options, d_left (mod)); 5961 d_append_char (dpi, ')'); 5962 return; 5963 5964 default: 5965 /* Otherwise, we have something that won't go back on the 5966 modifier stack, so we can just print it. */ 5967 d_print_comp (dpi, options, mod); 5968 return; 5969 } 5970 } 5971 5972 /* Print a function type, except for the return type. */ 5973 5974 static void 5975 d_print_function_type (struct d_print_info *dpi, int options, 5976 struct demangle_component *dc, 5977 struct d_print_mod *mods) 5978 { 5979 int need_paren; 5980 int need_space; 5981 struct d_print_mod *p; 5982 struct d_print_mod *hold_modifiers; 5983 5984 need_paren = 0; 5985 need_space = 0; 5986 for (p = mods; p != NULL; p = p->next) 5987 { 5988 if (p->printed) 5989 break; 5990 5991 switch (p->mod->type) 5992 { 5993 case DEMANGLE_COMPONENT_POINTER: 5994 case DEMANGLE_COMPONENT_REFERENCE: 5995 case DEMANGLE_COMPONENT_RVALUE_REFERENCE: 5996 need_paren = 1; 5997 break; 5998 case DEMANGLE_COMPONENT_RESTRICT: 5999 case DEMANGLE_COMPONENT_VOLATILE: 6000 case DEMANGLE_COMPONENT_CONST: 6001 case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL: 6002 case DEMANGLE_COMPONENT_COMPLEX: 6003 case DEMANGLE_COMPONENT_IMAGINARY: 6004 case DEMANGLE_COMPONENT_PTRMEM_TYPE: 6005 need_space = 1; 6006 need_paren = 1; 6007 break; 6008 FNQUAL_COMPONENT_CASE: 6009 break; 6010 default: 6011 break; 6012 } 6013 if (need_paren) 6014 break; 6015 } 6016 6017 if (need_paren) 6018 { 6019 if (! need_space) 6020 { 6021 if (d_last_char (dpi) != '(' 6022 && d_last_char (dpi) != '*') 6023 need_space = 1; 6024 } 6025 if (need_space && d_last_char (dpi) != ' ') 6026 d_append_char (dpi, ' '); 6027 d_append_char (dpi, '('); 6028 } 6029 6030 hold_modifiers = dpi->modifiers; 6031 dpi->modifiers = NULL; 6032 6033 d_print_mod_list (dpi, options, mods, 0); 6034 6035 if (need_paren) 6036 d_append_char (dpi, ')'); 6037 6038 d_append_char (dpi, '('); 6039 6040 if (d_right (dc) != NULL) 6041 d_print_comp (dpi, options, d_right (dc)); 6042 6043 d_append_char (dpi, ')'); 6044 6045 d_print_mod_list (dpi, options, mods, 1); 6046 6047 dpi->modifiers = hold_modifiers; 6048 } 6049 6050 /* Print an array type, except for the element type. */ 6051 6052 static void 6053 d_print_array_type (struct d_print_info *dpi, int options, 6054 struct demangle_component *dc, 6055 struct d_print_mod *mods) 6056 { 6057 int need_space; 6058 6059 need_space = 1; 6060 if (mods != NULL) 6061 { 6062 int need_paren; 6063 struct d_print_mod *p; 6064 6065 need_paren = 0; 6066 for (p = mods; p != NULL; p = p->next) 6067 { 6068 if (! p->printed) 6069 { 6070 if (p->mod->type == DEMANGLE_COMPONENT_ARRAY_TYPE) 6071 { 6072 need_space = 0; 6073 break; 6074 } 6075 else 6076 { 6077 need_paren = 1; 6078 need_space = 1; 6079 break; 6080 } 6081 } 6082 } 6083 6084 if (need_paren) 6085 d_append_string (dpi, " ("); 6086 6087 d_print_mod_list (dpi, options, mods, 0); 6088 6089 if (need_paren) 6090 d_append_char (dpi, ')'); 6091 } 6092 6093 if (need_space) 6094 d_append_char (dpi, ' '); 6095 6096 d_append_char (dpi, '['); 6097 6098 if (d_left (dc) != NULL) 6099 d_print_comp (dpi, options, d_left (dc)); 6100 6101 d_append_char (dpi, ']'); 6102 } 6103 6104 /* Print an operator in an expression. */ 6105 6106 static void 6107 d_print_expr_op (struct d_print_info *dpi, int options, 6108 struct demangle_component *dc) 6109 { 6110 if (dc->type == DEMANGLE_COMPONENT_OPERATOR) 6111 d_append_buffer (dpi, dc->u.s_operator.op->name, 6112 dc->u.s_operator.op->len); 6113 else 6114 d_print_comp (dpi, options, dc); 6115 } 6116 6117 /* Print a cast. */ 6118 6119 static void 6120 d_print_cast (struct d_print_info *dpi, int options, 6121 struct demangle_component *dc) 6122 { 6123 d_print_comp (dpi, options, d_left (dc)); 6124 } 6125 6126 /* Print a conversion operator. */ 6127 6128 static void 6129 d_print_conversion (struct d_print_info *dpi, int options, 6130 struct demangle_component *dc) 6131 { 6132 struct d_print_template dpt; 6133 6134 /* For a conversion operator, we need the template parameters from 6135 the enclosing template in scope for processing the type. */ 6136 if (dpi->current_template != NULL) 6137 { 6138 dpt.next = dpi->templates; 6139 dpi->templates = &dpt; 6140 dpt.template_decl = dpi->current_template; 6141 } 6142 6143 if (d_left (dc)->type != DEMANGLE_COMPONENT_TEMPLATE) 6144 { 6145 d_print_comp (dpi, options, d_left (dc)); 6146 if (dpi->current_template != NULL) 6147 dpi->templates = dpt.next; 6148 } 6149 else 6150 { 6151 d_print_comp (dpi, options, d_left (d_left (dc))); 6152 6153 /* For a templated cast operator, we need to remove the template 6154 parameters from scope after printing the operator name, 6155 so we need to handle the template printing here. */ 6156 if (dpi->current_template != NULL) 6157 dpi->templates = dpt.next; 6158 6159 if (d_last_char (dpi) == '<') 6160 d_append_char (dpi, ' '); 6161 d_append_char (dpi, '<'); 6162 d_print_comp (dpi, options, d_right (d_left (dc))); 6163 /* Avoid generating two consecutive '>' characters, to avoid 6164 the C++ syntactic ambiguity. */ 6165 if (d_last_char (dpi) == '>') 6166 d_append_char (dpi, ' '); 6167 d_append_char (dpi, '>'); 6168 } 6169 } 6170 6171 /* Initialize the information structure we use to pass around 6172 information. */ 6173 6174 CP_STATIC_IF_GLIBCPP_V3 6175 void 6176 cplus_demangle_init_info (const char *mangled, int options, size_t len, 6177 struct d_info *di) 6178 { 6179 di->s = mangled; 6180 di->send = mangled + len; 6181 di->options = options; 6182 6183 di->n = mangled; 6184 6185 /* We can not need more components than twice the number of chars in 6186 the mangled string. Most components correspond directly to 6187 chars, but the ARGLIST types are exceptions. */ 6188 di->num_comps = 2 * len; 6189 di->next_comp = 0; 6190 6191 /* Similarly, we can not need more substitutions than there are 6192 chars in the mangled string. */ 6193 di->num_subs = len; 6194 di->next_sub = 0; 6195 di->did_subs = 0; 6196 6197 di->last_name = NULL; 6198 6199 di->expansion = 0; 6200 di->is_expression = 0; 6201 di->is_conversion = 0; 6202 } 6203 6204 /* Internal implementation for the demangler. If MANGLED is a g++ v3 ABI 6205 mangled name, return strings in repeated callback giving the demangled 6206 name. OPTIONS is the usual libiberty demangler options. On success, 6207 this returns 1. On failure, returns 0. */ 6208 6209 static int 6210 d_demangle_callback (const char *mangled, int options, 6211 demangle_callbackref callback, void *opaque) 6212 { 6213 enum 6214 { 6215 DCT_TYPE, 6216 DCT_MANGLED, 6217 DCT_GLOBAL_CTORS, 6218 DCT_GLOBAL_DTORS 6219 } 6220 type; 6221 struct d_info di; 6222 struct demangle_component *dc; 6223 int status; 6224 6225 if (mangled[0] == '_' && mangled[1] == 'Z') 6226 type = DCT_MANGLED; 6227 else if (strncmp (mangled, "_GLOBAL_", 8) == 0 6228 && (mangled[8] == '.' || mangled[8] == '_' || mangled[8] == '$') 6229 && (mangled[9] == 'D' || mangled[9] == 'I') 6230 && mangled[10] == '_') 6231 type = mangled[9] == 'I' ? DCT_GLOBAL_CTORS : DCT_GLOBAL_DTORS; 6232 else 6233 { 6234 if ((options & DMGL_TYPES) == 0) 6235 return 0; 6236 type = DCT_TYPE; 6237 } 6238 6239 cplus_demangle_init_info (mangled, options, strlen (mangled), &di); 6240 6241 { 6242 #if 0 /* in valgrind */ 6243 #ifdef CP_DYNAMIC_ARRAYS 6244 __extension__ struct demangle_component comps[di.num_comps]; 6245 __extension__ struct demangle_component *subs[di.num_subs]; 6246 6247 di.comps = comps; 6248 di.subs = subs; 6249 #else 6250 di.comps = alloca (di.num_comps * sizeof (*di.comps)); 6251 di.subs = alloca (di.num_subs * sizeof (*di.subs)); 6252 #endif 6253 #else 6254 /* Allocate memory dynamically to avoid VLAs as valgrind stack 6255 is a scarce resource */ 6256 di.comps = xmalloc (di.num_comps * sizeof (*di.comps)); 6257 di.subs = xmalloc (di.num_subs * sizeof (*di.subs)); 6258 #endif /* ! in valgrind */ 6259 6260 switch (type) 6261 { 6262 case DCT_TYPE: 6263 dc = cplus_demangle_type (&di); 6264 break; 6265 case DCT_MANGLED: 6266 dc = cplus_demangle_mangled_name (&di, 1); 6267 break; 6268 case DCT_GLOBAL_CTORS: 6269 case DCT_GLOBAL_DTORS: 6270 d_advance (&di, 11); 6271 dc = d_make_comp (&di, 6272 (type == DCT_GLOBAL_CTORS 6273 ? DEMANGLE_COMPONENT_GLOBAL_CONSTRUCTORS 6274 : DEMANGLE_COMPONENT_GLOBAL_DESTRUCTORS), 6275 d_make_demangle_mangled_name (&di, d_str (&di)), 6276 NULL); 6277 d_advance (&di, strlen (d_str (&di))); 6278 break; 6279 default: 6280 abort (); /* We have listed all the cases. */ 6281 } 6282 6283 /* If DMGL_PARAMS is set, then if we didn't consume the entire 6284 mangled string, then we didn't successfully demangle it. If 6285 DMGL_PARAMS is not set, we didn't look at the trailing 6286 parameters. */ 6287 if (((options & DMGL_PARAMS) != 0) && d_peek_char (&di) != '\0') 6288 dc = NULL; 6289 6290 #ifdef CP_DEMANGLE_DEBUG 6291 d_dump (dc, 0); 6292 #endif 6293 6294 status = (dc != NULL) 6295 ? cplus_demangle_print_callback (options, dc, callback, opaque) 6296 : 0; 6297 } 6298 6299 #if 0 /* in valgrind */ 6300 #else 6301 free (di.comps); 6302 free (di.subs); 6303 #endif /* in valgrind */ 6304 6305 return status; 6306 } 6307 6308 /* Entry point for the demangler. If MANGLED is a g++ v3 ABI mangled 6309 name, return a buffer allocated with malloc holding the demangled 6310 name. OPTIONS is the usual libiberty demangler options. On 6311 success, this sets *PALC to the allocated size of the returned 6312 buffer. On failure, this sets *PALC to 0 for a bad name, or 1 for 6313 a memory allocation failure, and returns NULL. */ 6314 6315 static char * 6316 d_demangle (const char *mangled, int options, size_t *palc) 6317 { 6318 struct d_growable_string dgs; 6319 int status; 6320 6321 d_growable_string_init (&dgs, 0); 6322 6323 status = d_demangle_callback (mangled, options, 6324 d_growable_string_callback_adapter, &dgs); 6325 if (status == 0) 6326 { 6327 free (dgs.buf); 6328 *palc = 0; 6329 return NULL; 6330 } 6331 6332 *palc = dgs.allocation_failure ? 1 : dgs.alc; 6333 return dgs.buf; 6334 } 6335 6336 #if defined(IN_LIBGCC2) || defined(IN_GLIBCPP_V3) 6337 6338 extern char *__cxa_demangle (const char *, char *, size_t *, int *); 6339 6340 /* ia64 ABI-mandated entry point in the C++ runtime library for 6341 performing demangling. MANGLED_NAME is a NUL-terminated character 6342 string containing the name to be demangled. 6343 6344 OUTPUT_BUFFER is a region of memory, allocated with malloc, of 6345 *LENGTH bytes, into which the demangled name is stored. If 6346 OUTPUT_BUFFER is not long enough, it is expanded using realloc. 6347 OUTPUT_BUFFER may instead be NULL; in that case, the demangled name 6348 is placed in a region of memory allocated with malloc. 6349 6350 If LENGTH is non-NULL, the length of the buffer containing the 6351 demangled name, is placed in *LENGTH. 6352 6353 The return value is a pointer to the start of the NUL-terminated 6354 demangled name, or NULL if the demangling fails. The caller is 6355 responsible for deallocating this memory using free. 6356 6357 *STATUS is set to one of the following values: 6358 0: The demangling operation succeeded. 6359 -1: A memory allocation failure occurred. 6360 -2: MANGLED_NAME is not a valid name under the C++ ABI mangling rules. 6361 -3: One of the arguments is invalid. 6362 6363 The demangling is performed using the C++ ABI mangling rules, with 6364 GNU extensions. */ 6365 6366 char * 6367 __cxa_demangle (const char *mangled_name, char *output_buffer, 6368 size_t *length, int *status) 6369 { 6370 char *demangled; 6371 size_t alc; 6372 6373 if (mangled_name == NULL) 6374 { 6375 if (status != NULL) 6376 *status = -3; 6377 return NULL; 6378 } 6379 6380 if (output_buffer != NULL && length == NULL) 6381 { 6382 if (status != NULL) 6383 *status = -3; 6384 return NULL; 6385 } 6386 6387 demangled = d_demangle (mangled_name, DMGL_PARAMS | DMGL_TYPES, &alc); 6388 6389 if (demangled == NULL) 6390 { 6391 if (status != NULL) 6392 { 6393 if (alc == 1) 6394 *status = -1; 6395 else 6396 *status = -2; 6397 } 6398 return NULL; 6399 } 6400 6401 if (output_buffer == NULL) 6402 { 6403 if (length != NULL) 6404 *length = alc; 6405 } 6406 else 6407 { 6408 if (strlen (demangled) < *length) 6409 { 6410 strcpy (output_buffer, demangled); 6411 free (demangled); 6412 demangled = output_buffer; 6413 } 6414 else 6415 { 6416 free (output_buffer); 6417 *length = alc; 6418 } 6419 } 6420 6421 if (status != NULL) 6422 *status = 0; 6423 6424 return demangled; 6425 } 6426 6427 extern int __gcclibcxx_demangle_callback (const char *, 6428 void (*) 6429 (const char *, size_t, void *), 6430 void *); 6431 6432 /* Alternative, allocationless entry point in the C++ runtime library 6433 for performing demangling. MANGLED_NAME is a NUL-terminated character 6434 string containing the name to be demangled. 6435 6436 CALLBACK is a callback function, called with demangled string 6437 segments as demangling progresses; it is called at least once, 6438 but may be called more than once. OPAQUE is a generalized pointer 6439 used as a callback argument. 6440 6441 The return code is one of the following values, equivalent to 6442 the STATUS values of __cxa_demangle() (excluding -1, since this 6443 function performs no memory allocations): 6444 0: The demangling operation succeeded. 6445 -2: MANGLED_NAME is not a valid name under the C++ ABI mangling rules. 6446 -3: One of the arguments is invalid. 6447 6448 The demangling is performed using the C++ ABI mangling rules, with 6449 GNU extensions. */ 6450 6451 int 6452 __gcclibcxx_demangle_callback (const char *mangled_name, 6453 void (*callback) (const char *, size_t, void *), 6454 void *opaque) 6455 { 6456 int status; 6457 6458 if (mangled_name == NULL || callback == NULL) 6459 return -3; 6460 6461 status = d_demangle_callback (mangled_name, DMGL_PARAMS | DMGL_TYPES, 6462 callback, opaque); 6463 if (status == 0) 6464 return -2; 6465 6466 return 0; 6467 } 6468 6469 #else /* ! (IN_LIBGCC2 || IN_GLIBCPP_V3) */ 6470 6471 /* Entry point for libiberty demangler. If MANGLED is a g++ v3 ABI 6472 mangled name, return a buffer allocated with malloc holding the 6473 demangled name. Otherwise, return NULL. */ 6474 6475 char * 6476 cplus_demangle_v3 (const char *mangled, int options) 6477 { 6478 size_t alc; 6479 6480 return d_demangle (mangled, options, &alc); 6481 } 6482 6483 int 6484 cplus_demangle_v3_callback (const char *mangled, int options, 6485 demangle_callbackref callback, void *opaque) 6486 { 6487 return d_demangle_callback (mangled, options, callback, opaque); 6488 } 6489 6490 /* Demangle a Java symbol. Java uses a subset of the V3 ABI C++ mangling 6491 conventions, but the output formatting is a little different. 6492 This instructs the C++ demangler not to emit pointer characters ("*"), to 6493 use Java's namespace separator symbol ("." instead of "::"), and to output 6494 JArray<TYPE> as TYPE[]. */ 6495 6496 char * 6497 java_demangle_v3 (const char *mangled) 6498 { 6499 size_t alc; 6500 6501 return d_demangle (mangled, DMGL_JAVA | DMGL_PARAMS | DMGL_RET_POSTFIX, &alc); 6502 } 6503 6504 int 6505 java_demangle_v3_callback (const char *mangled, 6506 demangle_callbackref callback, void *opaque) 6507 { 6508 return d_demangle_callback (mangled, 6509 DMGL_JAVA | DMGL_PARAMS | DMGL_RET_POSTFIX, 6510 callback, opaque); 6511 } 6512 6513 #endif /* IN_LIBGCC2 || IN_GLIBCPP_V3 */ 6514 6515 #ifndef IN_GLIBCPP_V3 6516 6517 /* Demangle a string in order to find out whether it is a constructor 6518 or destructor. Return non-zero on success. Set *CTOR_KIND and 6519 *DTOR_KIND appropriately. */ 6520 6521 static int 6522 is_ctor_or_dtor (const char *mangled, 6523 enum gnu_v3_ctor_kinds *ctor_kind, 6524 enum gnu_v3_dtor_kinds *dtor_kind) 6525 { 6526 struct d_info di; 6527 struct demangle_component *dc; 6528 int ret; 6529 6530 *ctor_kind = (enum gnu_v3_ctor_kinds) 0; 6531 *dtor_kind = (enum gnu_v3_dtor_kinds) 0; 6532 6533 cplus_demangle_init_info (mangled, DMGL_GNU_V3, strlen (mangled), &di); 6534 6535 { 6536 #if 0 /* in valgrind */ 6537 #ifdef CP_DYNAMIC_ARRAYS 6538 __extension__ struct demangle_component comps[di.num_comps]; 6539 __extension__ struct demangle_component *subs[di.num_subs]; 6540 6541 di.comps = comps; 6542 di.subs = subs; 6543 #else 6544 di.comps = alloca (di.num_comps * sizeof (*di.comps)); 6545 di.subs = alloca (di.num_subs * sizeof (*di.subs)); 6546 #endif 6547 #else 6548 /* Allocate memory dynamically to avoid VLAs as valgrind stack 6549 is a scarce resource */ 6550 di.comps = xmalloc (di.num_comps * sizeof (*di.comps)); 6551 di.subs = xmalloc (di.num_subs * sizeof (*di.subs)); 6552 #endif /* ! in valgrind */ 6553 dc = cplus_demangle_mangled_name (&di, 1); 6554 6555 /* Note that because we did not pass DMGL_PARAMS, we don't expect 6556 to demangle the entire string. */ 6557 6558 ret = 0; 6559 while (dc != NULL) 6560 { 6561 switch (dc->type) 6562 { 6563 /* These cannot appear on a constructor or destructor. */ 6564 case DEMANGLE_COMPONENT_RESTRICT_THIS: 6565 case DEMANGLE_COMPONENT_VOLATILE_THIS: 6566 case DEMANGLE_COMPONENT_CONST_THIS: 6567 case DEMANGLE_COMPONENT_REFERENCE_THIS: 6568 case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS: 6569 default: 6570 dc = NULL; 6571 break; 6572 case DEMANGLE_COMPONENT_TYPED_NAME: 6573 case DEMANGLE_COMPONENT_TEMPLATE: 6574 dc = d_left (dc); 6575 break; 6576 case DEMANGLE_COMPONENT_QUAL_NAME: 6577 case DEMANGLE_COMPONENT_LOCAL_NAME: 6578 dc = d_right (dc); 6579 break; 6580 case DEMANGLE_COMPONENT_CTOR: 6581 *ctor_kind = dc->u.s_ctor.kind; 6582 ret = 1; 6583 dc = NULL; 6584 break; 6585 case DEMANGLE_COMPONENT_DTOR: 6586 *dtor_kind = dc->u.s_dtor.kind; 6587 ret = 1; 6588 dc = NULL; 6589 break; 6590 } 6591 } 6592 } 6593 6594 #if 0 /* in valgrind */ 6595 #else 6596 free (di.comps); 6597 free (di.subs); 6598 #endif /* in valgrind */ 6599 6600 return ret; 6601 } 6602 6603 /* Return whether NAME is the mangled form of a g++ V3 ABI constructor 6604 name. A non-zero return indicates the type of constructor. */ 6605 6606 enum gnu_v3_ctor_kinds 6607 is_gnu_v3_mangled_ctor (const char *name) 6608 { 6609 enum gnu_v3_ctor_kinds ctor_kind; 6610 enum gnu_v3_dtor_kinds dtor_kind; 6611 6612 if (! is_ctor_or_dtor (name, &ctor_kind, &dtor_kind)) 6613 return (enum gnu_v3_ctor_kinds) 0; 6614 return ctor_kind; 6615 } 6616 6617 6618 /* Return whether NAME is the mangled form of a g++ V3 ABI destructor 6619 name. A non-zero return indicates the type of destructor. */ 6620 6621 enum gnu_v3_dtor_kinds 6622 is_gnu_v3_mangled_dtor (const char *name) 6623 { 6624 enum gnu_v3_ctor_kinds ctor_kind; 6625 enum gnu_v3_dtor_kinds dtor_kind; 6626 6627 if (! is_ctor_or_dtor (name, &ctor_kind, &dtor_kind)) 6628 return (enum gnu_v3_dtor_kinds) 0; 6629 return dtor_kind; 6630 } 6631 6632 #endif /* IN_GLIBCPP_V3 */ 6633 6634 #ifdef STANDALONE_DEMANGLER 6635 6636 #if 0 /* in valgrind */ 6637 #include "getopt.h" 6638 #include "dyn-string.h" 6639 #endif /* ! in valgrind */ 6640 6641 static void print_usage (FILE* fp, int exit_value); 6642 6643 #define IS_ALPHA(CHAR) \ 6644 (((CHAR) >= 'a' && (CHAR) <= 'z') \ 6645 || ((CHAR) >= 'A' && (CHAR) <= 'Z')) 6646 6647 /* Non-zero if CHAR is a character than can occur in a mangled name. */ 6648 #define is_mangled_char(CHAR) \ 6649 (IS_ALPHA (CHAR) || IS_DIGIT (CHAR) \ 6650 || (CHAR) == '_' || (CHAR) == '.' || (CHAR) == '$') 6651 6652 /* The name of this program, as invoked. */ 6653 const char* program_name; 6654 6655 /* Prints usage summary to FP and then exits with EXIT_VALUE. */ 6656 6657 static void 6658 print_usage (FILE* fp, int exit_value) 6659 { 6660 fprintf (fp, "Usage: %s [options] [names ...]\n", program_name); 6661 fprintf (fp, "Options:\n"); 6662 fprintf (fp, " -h,--help Display this message.\n"); 6663 fprintf (fp, " -p,--no-params Don't display function parameters\n"); 6664 fprintf (fp, " -v,--verbose Produce verbose demanglings.\n"); 6665 fprintf (fp, "If names are provided, they are demangled. Otherwise filters standard input.\n"); 6666 6667 exit (exit_value); 6668 } 6669 6670 /* Option specification for getopt_long. */ 6671 static const struct option long_options[] = 6672 { 6673 { "help", no_argument, NULL, 'h' }, 6674 { "no-params", no_argument, NULL, 'p' }, 6675 { "verbose", no_argument, NULL, 'v' }, 6676 { NULL, no_argument, NULL, 0 }, 6677 }; 6678 6679 /* Main entry for a demangling filter executable. It will demangle 6680 its command line arguments, if any. If none are provided, it will 6681 filter stdin to stdout, replacing any recognized mangled C++ names 6682 with their demangled equivalents. */ 6683 6684 int 6685 main (int argc, char *argv[]) 6686 { 6687 int i; 6688 int opt_char; 6689 int options = DMGL_PARAMS | DMGL_ANSI | DMGL_TYPES; 6690 6691 /* Use the program name of this program, as invoked. */ 6692 program_name = argv[0]; 6693 6694 /* Parse options. */ 6695 do 6696 { 6697 opt_char = getopt_long (argc, argv, "hpv", long_options, NULL); 6698 switch (opt_char) 6699 { 6700 case '?': /* Unrecognized option. */ 6701 print_usage (stderr, 1); 6702 break; 6703 6704 case 'h': 6705 print_usage (stdout, 0); 6706 break; 6707 6708 case 'p': 6709 options &= ~ DMGL_PARAMS; 6710 break; 6711 6712 case 'v': 6713 options |= DMGL_VERBOSE; 6714 break; 6715 } 6716 } 6717 while (opt_char != -1); 6718 6719 if (optind == argc) 6720 /* No command line arguments were provided. Filter stdin. */ 6721 { 6722 dyn_string_t mangled = dyn_string_new (3); 6723 char *s; 6724 6725 /* Read all of input. */ 6726 while (!feof (stdin)) 6727 { 6728 char c; 6729 6730 /* Pile characters into mangled until we hit one that can't 6731 occur in a mangled name. */ 6732 c = getchar (); 6733 while (!feof (stdin) && is_mangled_char (c)) 6734 { 6735 dyn_string_append_char (mangled, c); 6736 if (feof (stdin)) 6737 break; 6738 c = getchar (); 6739 } 6740 6741 if (dyn_string_length (mangled) > 0) 6742 { 6743 #ifdef IN_GLIBCPP_V3 6744 s = __cxa_demangle (dyn_string_buf (mangled), NULL, NULL, NULL); 6745 #else 6746 s = cplus_demangle_v3 (dyn_string_buf (mangled), options); 6747 #endif 6748 6749 if (s != NULL) 6750 { 6751 fputs (s, stdout); 6752 free (s); 6753 } 6754 else 6755 { 6756 /* It might not have been a mangled name. Print the 6757 original text. */ 6758 fputs (dyn_string_buf (mangled), stdout); 6759 } 6760 6761 dyn_string_clear (mangled); 6762 } 6763 6764 /* If we haven't hit EOF yet, we've read one character that 6765 can't occur in a mangled name, so print it out. */ 6766 if (!feof (stdin)) 6767 putchar (c); 6768 } 6769 6770 dyn_string_delete (mangled); 6771 } 6772 else 6773 /* Demangle command line arguments. */ 6774 { 6775 /* Loop over command line arguments. */ 6776 for (i = optind; i < argc; ++i) 6777 { 6778 char *s; 6779 #ifdef IN_GLIBCPP_V3 6780 int status; 6781 #endif 6782 6783 /* Attempt to demangle. */ 6784 #ifdef IN_GLIBCPP_V3 6785 s = __cxa_demangle (argv[i], NULL, NULL, &status); 6786 #else 6787 s = cplus_demangle_v3 (argv[i], options); 6788 #endif 6789 6790 /* If it worked, print the demangled name. */ 6791 if (s != NULL) 6792 { 6793 printf ("%s\n", s); 6794 free (s); 6795 } 6796 else 6797 { 6798 #ifdef IN_GLIBCPP_V3 6799 fprintf (stderr, "Failed: %s (status %d)\n", argv[i], status); 6800 #else 6801 fprintf (stderr, "Failed: %s\n", argv[i]); 6802 #endif 6803 } 6804 } 6805 } 6806 6807 return 0; 6808 } 6809 6810 #endif /* STANDALONE_DEMANGLER */ 6811
