| 1 | /* Demangler for IA64 / g++ V3 ABI. |
| 2 | Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc. |
| 3 | Written by Alex Samuel <samuel@codesourcery.com>. |
| 4 | |
| 5 | This file is part of GNU CC. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 29 | */ |
| 30 | |
| 31 | /* This file implements demangling of C++ names mangled according to |
| 32 | the IA64 / g++ V3 ABI. Use the cp_demangle function to |
| 33 | demangle a mangled name, or compile with the preprocessor macro |
| 34 | STANDALONE_DEMANGLER defined to create a demangling filter |
| 35 | executable (functionally similar to c++filt, but includes this |
| 36 | demangler only). */ |
| 37 | |
| 38 | #ifdef HAVE_CONFIG_H |
| 39 | #include "config.h" |
| 40 | #endif |
| 41 | |
| 42 | #include <sys/types.h> |
| 43 | |
| 44 | #ifdef HAVE_STDLIB_H |
| 45 | #include <stdlib.h> |
| 46 | #endif |
| 47 | |
| 48 | #include <stdio.h> |
| 49 | |
| 50 | #ifdef HAVE_STRING_H |
| 51 | #include <string.h> |
| 52 | #endif |
| 53 | |
| 54 | #include <ctype.h> |
| 55 | |
| 56 | #include "ansidecl.h" |
| 57 | #include "libiberty.h" |
| 58 | #include "dyn-string.h" |
| 59 | #include "demangle.h" |
| 60 | |
| 61 | /* If CP_DEMANGLE_DEBUG is defined, a trace of the grammar evaluation, |
| 62 | and other debugging output, will be generated. */ |
| 63 | #ifdef CP_DEMANGLE_DEBUG |
| 64 | #define DEMANGLE_TRACE(PRODUCTION, DM) \ |
| 65 | fprintf (stderr, " -> %-24s at position %3d\n", \ |
| 66 | (PRODUCTION), current_position (DM)); |
| 67 | #else |
| 68 | #define DEMANGLE_TRACE(PRODUCTION, DM) |
| 69 | #endif |
| 70 | |
| 71 | /* Don't include <ctype.h>, to prevent additional unresolved symbols |
| 72 | from being dragged into the C++ runtime library. */ |
| 73 | #define IS_DIGIT(CHAR) ((CHAR) >= '0' && (CHAR) <= '9') |
| 74 | #define IS_ALPHA(CHAR) \ |
| 75 | (((CHAR) >= 'a' && (CHAR) <= 'z') \ |
| 76 | || ((CHAR) >= 'A' && (CHAR) <= 'Z')) |
| 77 | |
| 78 | /* The prefix prepended by GCC to an identifier represnting the |
| 79 | anonymous namespace. */ |
| 80 | #define ANONYMOUS_NAMESPACE_PREFIX "_GLOBAL_" |
| 81 | |
| 82 | /* Character(s) to use for namespace separation in demangled output */ |
| 83 | #define NAMESPACE_SEPARATOR (dm->style == DMGL_JAVA ? "." : "::") |
| 84 | |
| 85 | /* If flag_verbose is zero, some simplifications will be made to the |
| 86 | output to make it easier to read and supress details that are |
| 87 | generally not of interest to the average C++ programmer. |
| 88 | Otherwise, the demangled representation will attempt to convey as |
| 89 | much information as the mangled form. */ |
| 90 | static int flag_verbose; |
| 91 | |
| 92 | /* If flag_strict is non-zero, demangle strictly according to the |
| 93 | specification -- don't demangle special g++ manglings. */ |
| 94 | static int flag_strict; |
| 95 | |
| 96 | /* String_list_t is an extended form of dyn_string_t which provides a |
| 97 | link field and a caret position for additions to the string. A |
| 98 | string_list_t may safely be cast to and used as a dyn_string_t. */ |
| 99 | |
| 100 | struct string_list_def |
| 101 | { |
| 102 | /* The dyn_string; must be first. */ |
| 103 | struct dyn_string string; |
| 104 | |
| 105 | /* The position at which additional text is added to this string |
| 106 | (using the result_add* macros). This value is an offset from the |
| 107 | end of the string, not the beginning (and should be |
| 108 | non-positive). */ |
| 109 | int caret_position; |
| 110 | |
| 111 | /* The next string in the list. */ |
| 112 | struct string_list_def *next; |
| 113 | }; |
| 114 | |
| 115 | typedef struct string_list_def *string_list_t; |
| 116 | |
| 117 | /* Data structure representing a potential substitution. */ |
| 118 | |
| 119 | struct substitution_def |
| 120 | { |
| 121 | /* The demangled text of the substitution. */ |
| 122 | dyn_string_t text; |
| 123 | |
| 124 | /* Whether this substitution represents a template item. */ |
| 125 | int template_p : 1; |
| 126 | }; |
| 127 | |
| 128 | /* Data structure representing a template argument list. */ |
| 129 | |
| 130 | struct template_arg_list_def |
| 131 | { |
| 132 | /* The next (lower) template argument list in the stack of currently |
| 133 | active template arguments. */ |
| 134 | struct template_arg_list_def *next; |
| 135 | |
| 136 | /* The first element in the list of template arguments in |
| 137 | left-to-right order. */ |
| 138 | string_list_t first_argument; |
| 139 | |
| 140 | /* The last element in the arguments lists. */ |
| 141 | string_list_t last_argument; |
| 142 | }; |
| 143 | |
| 144 | typedef struct template_arg_list_def *template_arg_list_t; |
| 145 | |
| 146 | /* Data structure to maintain the state of the current demangling. */ |
| 147 | |
| 148 | struct demangling_def |
| 149 | { |
| 150 | /* The full mangled name being mangled. */ |
| 151 | const char *name; |
| 152 | |
| 153 | /* Pointer into name at the current position. */ |
| 154 | const char *next; |
| 155 | |
| 156 | /* Stack for strings containing demangled result generated so far. |
| 157 | Text is emitted to the topmost (first) string. */ |
| 158 | string_list_t result; |
| 159 | |
| 160 | /* The number of presently available substitutions. */ |
| 161 | int num_substitutions; |
| 162 | |
| 163 | /* The allocated size of the substitutions array. */ |
| 164 | int substitutions_allocated; |
| 165 | |
| 166 | /* An array of available substitutions. The number of elements in |
| 167 | the array is given by num_substitions, and the allocated array |
| 168 | size in substitutions_size. |
| 169 | |
| 170 | The most recent substition is at the end, so |
| 171 | |
| 172 | - `S_' corresponds to substititutions[num_substitutions - 1] |
| 173 | - `S0_' corresponds to substititutions[num_substitutions - 2] |
| 174 | |
| 175 | etc. */ |
| 176 | struct substitution_def *substitutions; |
| 177 | |
| 178 | /* The stack of template argument lists. */ |
| 179 | template_arg_list_t template_arg_lists; |
| 180 | |
| 181 | /* The most recently demangled source-name. */ |
| 182 | dyn_string_t last_source_name; |
| 183 | |
| 184 | /* Language style to use for demangled output. */ |
| 185 | int style; |
| 186 | |
| 187 | /* Set to non-zero iff this name is a constructor. The actual value |
| 188 | indicates what sort of constructor this is; see demangle.h. */ |
| 189 | enum gnu_v3_ctor_kinds is_constructor; |
| 190 | |
| 191 | /* Set to non-zero iff this name is a destructor. The actual value |
| 192 | indicates what sort of destructor this is; see demangle.h. */ |
| 193 | enum gnu_v3_dtor_kinds is_destructor; |
| 194 | |
| 195 | }; |
| 196 | |
| 197 | typedef struct demangling_def *demangling_t; |
| 198 | |
| 199 | /* This type is the standard return code from most functions. Values |
| 200 | other than STATUS_OK contain descriptive messages. */ |
| 201 | typedef const char *status_t; |
| 202 | |
| 203 | /* Special values that can be used as a status_t. */ |
| 204 | #define STATUS_OK NULL |
| 205 | #define STATUS_ERROR "Error." |
| 206 | #define STATUS_UNIMPLEMENTED "Unimplemented." |
| 207 | #define STATUS_INTERNAL_ERROR "Internal error." |
| 208 | |
| 209 | /* This status code indicates a failure in malloc or realloc. */ |
| 210 | static const char *const status_allocation_failed = "Allocation failed."; |
| 211 | #define STATUS_ALLOCATION_FAILED status_allocation_failed |
| 212 | |
| 213 | /* Non-zero if STATUS indicates that no error has occurred. */ |
| 214 | #define STATUS_NO_ERROR(STATUS) ((STATUS) == STATUS_OK) |
| 215 | |
| 216 | /* Evaluate EXPR, which must produce a status_t. If the status code |
| 217 | indicates an error, return from the current function with that |
| 218 | status code. */ |
| 219 | #define RETURN_IF_ERROR(EXPR) \ |
| 220 | do \ |
| 221 | { \ |
| 222 | status_t s = EXPR; \ |
| 223 | if (!STATUS_NO_ERROR (s)) \ |
| 224 | return s; \ |
| 225 | } \ |
| 226 | while (0) |
| 227 | |
| 228 | static status_t int_to_dyn_string |
| 229 | PARAMS ((int, dyn_string_t)); |
| 230 | static string_list_t string_list_new |
| 231 | PARAMS ((int)); |
| 232 | static void string_list_delete |
| 233 | PARAMS ((string_list_t)); |
| 234 | static status_t result_add_separated_char |
| 235 | PARAMS ((demangling_t, int)); |
| 236 | static status_t result_push |
| 237 | PARAMS ((demangling_t)); |
| 238 | static string_list_t result_pop |
| 239 | PARAMS ((demangling_t)); |
| 240 | static int substitution_start |
| 241 | PARAMS ((demangling_t)); |
| 242 | static status_t substitution_add |
| 243 | PARAMS ((demangling_t, int, int)); |
| 244 | static dyn_string_t substitution_get |
| 245 | PARAMS ((demangling_t, int, int *)); |
| 246 | #ifdef CP_DEMANGLE_DEBUG |
| 247 | static void substitutions_print |
| 248 | PARAMS ((demangling_t, FILE *)); |
| 249 | #endif |
| 250 | static template_arg_list_t template_arg_list_new |
| 251 | PARAMS ((void)); |
| 252 | static void template_arg_list_delete |
| 253 | PARAMS ((template_arg_list_t)); |
| 254 | static void template_arg_list_add_arg |
| 255 | PARAMS ((template_arg_list_t, string_list_t)); |
| 256 | static string_list_t template_arg_list_get_arg |
| 257 | PARAMS ((template_arg_list_t, int)); |
| 258 | static void push_template_arg_list |
| 259 | PARAMS ((demangling_t, template_arg_list_t)); |
| 260 | static void pop_to_template_arg_list |
| 261 | PARAMS ((demangling_t, template_arg_list_t)); |
| 262 | #ifdef CP_DEMANGLE_DEBUG |
| 263 | static void template_arg_list_print |
| 264 | PARAMS ((template_arg_list_t, FILE *)); |
| 265 | #endif |
| 266 | static template_arg_list_t current_template_arg_list |
| 267 | PARAMS ((demangling_t)); |
| 268 | static demangling_t demangling_new |
| 269 | PARAMS ((const char *, int)); |
| 270 | static void demangling_delete |
| 271 | PARAMS ((demangling_t)); |
| 272 | |
| 273 | /* The last character of DS. Warning: DS is evaluated twice. */ |
| 274 | #define dyn_string_last_char(DS) \ |
| 275 | (dyn_string_buf (DS)[dyn_string_length (DS) - 1]) |
| 276 | |
| 277 | /* Append a space character (` ') to DS if it does not already end |
| 278 | with one. Evaluates to 1 on success, or 0 on allocation failure. */ |
| 279 | #define dyn_string_append_space(DS) \ |
| 280 | ((dyn_string_length (DS) > 0 \ |
| 281 | && dyn_string_last_char (DS) != ' ') \ |
| 282 | ? dyn_string_append_char ((DS), ' ') \ |
| 283 | : 1) |
| 284 | |
| 285 | /* Returns the index of the current position in the mangled name. */ |
| 286 | #define current_position(DM) ((DM)->next - (DM)->name) |
| 287 | |
| 288 | /* Returns the character at the current position of the mangled name. */ |
| 289 | #define peek_char(DM) (*((DM)->next)) |
| 290 | |
| 291 | /* Returns the character one past the current position of the mangled |
| 292 | name. */ |
| 293 | #define peek_char_next(DM) \ |
| 294 | (peek_char (DM) == '\0' ? '\0' : (*((DM)->next + 1))) |
| 295 | |
| 296 | /* Returns the character at the current position, and advances the |
| 297 | current position to the next character. */ |
| 298 | #define next_char(DM) (*((DM)->next)++) |
| 299 | |
| 300 | /* Returns non-zero if the current position is the end of the mangled |
| 301 | name, i.e. one past the last character. */ |
| 302 | #define end_of_name_p(DM) (peek_char (DM) == '\0') |
| 303 | |
| 304 | /* Advances the current position by one character. */ |
| 305 | #define advance_char(DM) (++(DM)->next) |
| 306 | |
| 307 | /* Returns the string containing the current demangled result. */ |
| 308 | #define result_string(DM) (&(DM)->result->string) |
| 309 | |
| 310 | /* Returns the position at which new text is inserted into the |
| 311 | demangled result. */ |
| 312 | #define result_caret_pos(DM) \ |
| 313 | (result_length (DM) + \ |
| 314 | ((string_list_t) result_string (DM))->caret_position) |
| 315 | |
| 316 | /* Adds a dyn_string_t to the demangled result. */ |
| 317 | #define result_add_string(DM, STRING) \ |
| 318 | (dyn_string_insert (&(DM)->result->string, \ |
| 319 | result_caret_pos (DM), (STRING)) \ |
| 320 | ? STATUS_OK : STATUS_ALLOCATION_FAILED) |
| 321 | |
| 322 | /* Adds NUL-terminated string CSTR to the demangled result. */ |
| 323 | #define result_add(DM, CSTR) \ |
| 324 | (dyn_string_insert_cstr (&(DM)->result->string, \ |
| 325 | result_caret_pos (DM), (CSTR)) \ |
| 326 | ? STATUS_OK : STATUS_ALLOCATION_FAILED) |
| 327 | |
| 328 | /* Adds character CHAR to the demangled result. */ |
| 329 | #define result_add_char(DM, CHAR) \ |
| 330 | (dyn_string_insert_char (&(DM)->result->string, \ |
| 331 | result_caret_pos (DM), (CHAR)) \ |
| 332 | ? STATUS_OK : STATUS_ALLOCATION_FAILED) |
| 333 | |
| 334 | /* Inserts a dyn_string_t to the demangled result at position POS. */ |
| 335 | #define result_insert_string(DM, POS, STRING) \ |
| 336 | (dyn_string_insert (&(DM)->result->string, (POS), (STRING)) \ |
| 337 | ? STATUS_OK : STATUS_ALLOCATION_FAILED) |
| 338 | |
| 339 | /* Inserts NUL-terminated string CSTR to the demangled result at |
| 340 | position POS. */ |
| 341 | #define result_insert(DM, POS, CSTR) \ |
| 342 | (dyn_string_insert_cstr (&(DM)->result->string, (POS), (CSTR)) \ |
| 343 | ? STATUS_OK : STATUS_ALLOCATION_FAILED) |
| 344 | |
| 345 | /* Inserts character CHAR to the demangled result at position POS. */ |
| 346 | #define result_insert_char(DM, POS, CHAR) \ |
| 347 | (dyn_string_insert_char (&(DM)->result->string, (POS), (CHAR)) \ |
| 348 | ? STATUS_OK : STATUS_ALLOCATION_FAILED) |
| 349 | |
| 350 | /* The length of the current demangled result. */ |
| 351 | #define result_length(DM) \ |
| 352 | dyn_string_length (&(DM)->result->string) |
| 353 | |
| 354 | /* Appends a (less-than, greater-than) character to the result in DM |
| 355 | to (open, close) a template argument or parameter list. Appends a |
| 356 | space first if necessary to prevent spurious elision of angle |
| 357 | brackets with the previous character. */ |
| 358 | #define result_open_template_list(DM) result_add_separated_char(DM, '<') |
| 359 | #define result_close_template_list(DM) result_add_separated_char(DM, '>') |
| 360 | |
| 361 | /* Appends a base 10 representation of VALUE to DS. STATUS_OK on |
| 362 | success. On failure, deletes DS and returns an error code. */ |
| 363 | |
| 364 | static status_t |
| 365 | int_to_dyn_string (value, ds) |
| 366 | int value; |
| 367 | dyn_string_t ds; |
| 368 | { |
| 369 | int i; |
| 370 | int mask = 1; |
| 371 | |
| 372 | /* Handle zero up front. */ |
| 373 | if (value == 0) |
| 374 | { |
| 375 | if (!dyn_string_append_char (ds, '0')) |
| 376 | return STATUS_ALLOCATION_FAILED; |
| 377 | return STATUS_OK; |
| 378 | } |
| 379 | |
| 380 | /* For negative numbers, emit a minus sign. */ |
| 381 | if (value < 0) |
| 382 | { |
| 383 | if (!dyn_string_append_char (ds, '-')) |
| 384 | return STATUS_ALLOCATION_FAILED; |
| 385 | value = -value; |
| 386 | } |
| 387 | |
| 388 | /* Find the power of 10 of the first digit. */ |
| 389 | i = value; |
| 390 | while (i > 9) |
| 391 | { |
| 392 | mask *= 10; |
| 393 | i /= 10; |
| 394 | } |
| 395 | |
| 396 | /* Write the digits. */ |
| 397 | while (mask > 0) |
| 398 | { |
| 399 | int digit = value / mask; |
| 400 | |
| 401 | if (!dyn_string_append_char (ds, '0' + digit)) |
| 402 | return STATUS_ALLOCATION_FAILED; |
| 403 | |
| 404 | value -= digit * mask; |
| 405 | mask /= 10; |
| 406 | } |
| 407 | |
| 408 | return STATUS_OK; |
| 409 | } |
| 410 | |
| 411 | /* Creates a new string list node. The contents of the string are |
| 412 | empty, but the initial buffer allocation is LENGTH. The string |
| 413 | list node should be deleted with string_list_delete. Returns NULL |
| 414 | if allocation fails. */ |
| 415 | |
| 416 | static string_list_t |
| 417 | string_list_new (length) |
| 418 | int length; |
| 419 | { |
| 420 | string_list_t s = (string_list_t) malloc (sizeof (struct string_list_def)); |
| 421 | s->caret_position = 0; |
| 422 | if (s == NULL) |
| 423 | return NULL; |
| 424 | if (!dyn_string_init ((dyn_string_t) s, length)) |
| 425 | return NULL; |
| 426 | return s; |
| 427 | } |
| 428 | |
| 429 | /* Deletes the entire string list starting at NODE. */ |
| 430 | |
| 431 | static void |
| 432 | string_list_delete (node) |
| 433 | string_list_t node; |
| 434 | { |
| 435 | while (node != NULL) |
| 436 | { |
| 437 | string_list_t next = node->next; |
| 438 | dyn_string_delete ((dyn_string_t) node); |
| 439 | node = next; |
| 440 | } |
| 441 | } |
| 442 | |
| 443 | /* Appends CHARACTER to the demangled result. If the current trailing |
| 444 | character of the result is CHARACTER, a space is inserted first. */ |
| 445 | |
| 446 | static status_t |
| 447 | result_add_separated_char (dm, character) |
| 448 | demangling_t dm; |
| 449 | int character; |
| 450 | { |
| 451 | char *result = dyn_string_buf (result_string (dm)); |
| 452 | int caret_pos = result_caret_pos (dm); |
| 453 | |
| 454 | /* Add a space if the last character is already the character we |
| 455 | want to add. */ |
| 456 | if (caret_pos > 0 && result[caret_pos - 1] == character) |
| 457 | RETURN_IF_ERROR (result_add_char (dm, ' ')); |
| 458 | /* Add the character. */ |
| 459 | RETURN_IF_ERROR (result_add_char (dm, character)); |
| 460 | |
| 461 | return STATUS_OK; |
| 462 | } |
| 463 | |
| 464 | /* Allocates and pushes a new string onto the demangled results stack |
| 465 | for DM. Subsequent demangling with DM will emit to the new string. |
| 466 | Returns STATUS_OK on success, STATUS_ALLOCATION_FAILED on |
| 467 | allocation failure. */ |
| 468 | |
| 469 | static status_t |
| 470 | result_push (dm) |
| 471 | demangling_t dm; |
| 472 | { |
| 473 | string_list_t new_string = string_list_new (0); |
| 474 | if (new_string == NULL) |
| 475 | /* Allocation failed. */ |
| 476 | return STATUS_ALLOCATION_FAILED; |
| 477 | |
| 478 | /* Link the new string to the front of the list of result strings. */ |
| 479 | new_string->next = (string_list_t) dm->result; |
| 480 | dm->result = new_string; |
| 481 | return STATUS_OK; |
| 482 | } |
| 483 | |
| 484 | /* Removes and returns the topmost element on the demangled results |
| 485 | stack for DM. The caller assumes ownership for the returned |
| 486 | string. */ |
| 487 | |
| 488 | static string_list_t |
| 489 | result_pop (dm) |
| 490 | demangling_t dm; |
| 491 | { |
| 492 | string_list_t top = dm->result; |
| 493 | dm->result = top->next; |
| 494 | return top; |
| 495 | } |
| 496 | |
| 497 | /* Returns the current value of the caret for the result string. The |
| 498 | value is an offet from the end of the result string. */ |
| 499 | |
| 500 | static int |
| 501 | result_get_caret (dm) |
| 502 | demangling_t dm; |
| 503 | { |
| 504 | return ((string_list_t) result_string (dm))->caret_position; |
| 505 | } |
| 506 | |
| 507 | /* Sets the value of the caret for the result string, counted as an |
| 508 | offet from the end of the result string. */ |
| 509 | |
| 510 | static void |
| 511 | result_set_caret (dm, position) |
| 512 | demangling_t dm; |
| 513 | int position; |
| 514 | { |
| 515 | ((string_list_t) result_string (dm))->caret_position = position; |
| 516 | } |
| 517 | |
| 518 | /* Shifts the position of the next addition to the result by |
| 519 | POSITION_OFFSET. A negative value shifts the caret to the left. */ |
| 520 | |
| 521 | static void |
| 522 | result_shift_caret (dm, position_offset) |
| 523 | demangling_t dm; |
| 524 | int position_offset; |
| 525 | { |
| 526 | ((string_list_t) result_string (dm))->caret_position += position_offset; |
| 527 | } |
| 528 | |
| 529 | /* Returns non-zero if the character that comes right before the place |
| 530 | where text will be added to the result is a space. In this case, |
| 531 | the caller should supress adding another space. */ |
| 532 | |
| 533 | static int |
| 534 | result_previous_char_is_space (dm) |
| 535 | demangling_t dm; |
| 536 | { |
| 537 | char *result = dyn_string_buf (result_string (dm)); |
| 538 | int pos = result_caret_pos (dm); |
| 539 | return pos > 0 && result[pos - 1] == ' '; |
| 540 | } |
| 541 | |
| 542 | /* Returns the start position of a fragment of the demangled result |
| 543 | that will be a substitution candidate. Should be called at the |
| 544 | start of productions that can add substitutions. */ |
| 545 | |
| 546 | static int |
| 547 | substitution_start (dm) |
| 548 | demangling_t dm; |
| 549 | { |
| 550 | return result_caret_pos (dm); |
| 551 | } |
| 552 | |
| 553 | /* Adds the suffix of the current demangled result of DM starting at |
| 554 | START_POSITION as a potential substitution. If TEMPLATE_P is |
| 555 | non-zero, this potential substitution is a template-id. */ |
| 556 | |
| 557 | static status_t |
| 558 | substitution_add (dm, start_position, template_p) |
| 559 | demangling_t dm; |
| 560 | int start_position; |
| 561 | int template_p; |
| 562 | { |
| 563 | dyn_string_t result = result_string (dm); |
| 564 | dyn_string_t substitution = dyn_string_new (0); |
| 565 | int i; |
| 566 | |
| 567 | if (substitution == NULL) |
| 568 | return STATUS_ALLOCATION_FAILED; |
| 569 | |
| 570 | /* Extract the substring of the current demangling result that |
| 571 | represents the subsitution candidate. */ |
| 572 | if (!dyn_string_substring (substitution, |
| 573 | result, start_position, result_caret_pos (dm))) |
| 574 | { |
| 575 | dyn_string_delete (substitution); |
| 576 | return STATUS_ALLOCATION_FAILED; |
| 577 | } |
| 578 | |
| 579 | /* If there's no room for the new entry, grow the array. */ |
| 580 | if (dm->substitutions_allocated == dm->num_substitutions) |
| 581 | { |
| 582 | size_t new_array_size; |
| 583 | if (dm->substitutions_allocated > 0) |
| 584 | dm->substitutions_allocated *= 2; |
| 585 | else |
| 586 | dm->substitutions_allocated = 2; |
| 587 | new_array_size = |
| 588 | sizeof (struct substitution_def) * dm->substitutions_allocated; |
| 589 | |
| 590 | dm->substitutions = (struct substitution_def *) |
| 591 | realloc (dm->substitutions, new_array_size); |
| 592 | if (dm->substitutions == NULL) |
| 593 | /* Realloc failed. */ |
| 594 | { |
| 595 | dyn_string_delete (substitution); |
| 596 | return STATUS_ALLOCATION_FAILED; |
| 597 | } |
| 598 | } |
| 599 | |
| 600 | /* Add the substitution to the array. */ |
| 601 | i = dm->num_substitutions++; |
| 602 | dm->substitutions[i].text = substitution; |
| 603 | dm->substitutions[i].template_p = template_p; |
| 604 | |
| 605 | #ifdef CP_DEMANGLE_DEBUG |
| 606 | substitutions_print (dm, stderr); |
| 607 | #endif |
| 608 | |
| 609 | return STATUS_OK; |
| 610 | } |
| 611 | |
| 612 | /* Returns the Nth-most-recent substitution. Sets *TEMPLATE_P to |
| 613 | non-zero if the substitution is a template-id, zero otherwise. |
| 614 | N is numbered from zero. DM retains ownership of the returned |
| 615 | string. If N is negative, or equal to or greater than the current |
| 616 | number of substitution candidates, returns NULL. */ |
| 617 | |
| 618 | static dyn_string_t |
| 619 | substitution_get (dm, n, template_p) |
| 620 | demangling_t dm; |
| 621 | int n; |
| 622 | int *template_p; |
| 623 | { |
| 624 | struct substitution_def *sub; |
| 625 | |
| 626 | /* Make sure N is in the valid range. */ |
| 627 | if (n < 0 || n >= dm->num_substitutions) |
| 628 | return NULL; |
| 629 | |
| 630 | sub = &(dm->substitutions[n]); |
| 631 | *template_p = sub->template_p; |
| 632 | return sub->text; |
| 633 | } |
| 634 | |
| 635 | #ifdef CP_DEMANGLE_DEBUG |
| 636 | /* Debugging routine to print the current substitutions to FP. */ |
| 637 | |
| 638 | static void |
| 639 | substitutions_print (dm, fp) |
| 640 | demangling_t dm; |
| 641 | FILE *fp; |
| 642 | { |
| 643 | int seq_id; |
| 644 | int num = dm->num_substitutions; |
| 645 | |
| 646 | fprintf (fp, "SUBSTITUTIONS:\n"); |
| 647 | for (seq_id = -1; seq_id < num - 1; ++seq_id) |
| 648 | { |
| 649 | int template_p; |
| 650 | dyn_string_t text = substitution_get (dm, seq_id + 1, &template_p); |
| 651 | |
| 652 | if (seq_id == -1) |
| 653 | fprintf (fp, " S_ "); |
| 654 | else |
| 655 | fprintf (fp, " S%d_", seq_id); |
| 656 | fprintf (fp, " %c: %s\n", template_p ? '*' : ' ', dyn_string_buf (text)); |
| 657 | } |
| 658 | } |
| 659 | |
| 660 | #endif /* CP_DEMANGLE_DEBUG */ |
| 661 | |
| 662 | /* Creates a new template argument list. Returns NULL if allocation |
| 663 | fails. */ |
| 664 | |
| 665 | static template_arg_list_t |
| 666 | template_arg_list_new () |
| 667 | { |
| 668 | template_arg_list_t new_list = |
| 669 | (template_arg_list_t) malloc (sizeof (struct template_arg_list_def)); |
| 670 | if (new_list == NULL) |
| 671 | return NULL; |
| 672 | /* Initialize the new list to have no arguments. */ |
| 673 | new_list->first_argument = NULL; |
| 674 | new_list->last_argument = NULL; |
| 675 | /* Return the new list. */ |
| 676 | return new_list; |
| 677 | } |
| 678 | |
| 679 | /* Deletes a template argument list and the template arguments it |
| 680 | contains. */ |
| 681 | |
| 682 | static void |
| 683 | template_arg_list_delete (list) |
| 684 | template_arg_list_t list; |
| 685 | { |
| 686 | /* If there are any arguments on LIST, delete them. */ |
| 687 | if (list->first_argument != NULL) |
| 688 | string_list_delete (list->first_argument); |
| 689 | /* Delete LIST. */ |
| 690 | free (list); |
| 691 | } |
| 692 | |
| 693 | /* Adds ARG to the template argument list ARG_LIST. */ |
| 694 | |
| 695 | static void |
| 696 | template_arg_list_add_arg (arg_list, arg) |
| 697 | template_arg_list_t arg_list; |
| 698 | string_list_t arg; |
| 699 | { |
| 700 | if (arg_list->first_argument == NULL) |
| 701 | /* If there were no arguments before, ARG is the first one. */ |
| 702 | arg_list->first_argument = arg; |
| 703 | else |
| 704 | /* Make ARG the last argument on the list. */ |
| 705 | arg_list->last_argument->next = arg; |
| 706 | /* Make ARG the last on the list. */ |
| 707 | arg_list->last_argument = arg; |
| 708 | arg->next = NULL; |
| 709 | } |
| 710 | |
| 711 | /* Returns the template arugment at position INDEX in template |
| 712 | argument list ARG_LIST. */ |
| 713 | |
| 714 | static string_list_t |
| 715 | template_arg_list_get_arg (arg_list, index) |
| 716 | template_arg_list_t arg_list; |
| 717 | int index; |
| 718 | { |
| 719 | string_list_t arg = arg_list->first_argument; |
| 720 | /* Scan down the list of arguments to find the one at position |
| 721 | INDEX. */ |
| 722 | while (index--) |
| 723 | { |
| 724 | arg = arg->next; |
| 725 | if (arg == NULL) |
| 726 | /* Ran out of arguments before INDEX hit zero. That's an |
| 727 | error. */ |
| 728 | return NULL; |
| 729 | } |
| 730 | /* Return the argument at position INDEX. */ |
| 731 | return arg; |
| 732 | } |
| 733 | |
| 734 | /* Pushes ARG_LIST onto the top of the template argument list stack. */ |
| 735 | |
| 736 | static void |
| 737 | push_template_arg_list (dm, arg_list) |
| 738 | demangling_t dm; |
| 739 | template_arg_list_t arg_list; |
| 740 | { |
| 741 | arg_list->next = dm->template_arg_lists; |
| 742 | dm->template_arg_lists = arg_list; |
| 743 | #ifdef CP_DEMANGLE_DEBUG |
| 744 | fprintf (stderr, " ** pushing template arg list\n"); |
| 745 | template_arg_list_print (arg_list, stderr); |
| 746 | #endif |
| 747 | } |
| 748 | |
| 749 | /* Pops and deletes elements on the template argument list stack until |
| 750 | arg_list is the topmost element. If arg_list is NULL, all elements |
| 751 | are popped and deleted. */ |
| 752 | |
| 753 | static void |
| 754 | pop_to_template_arg_list (dm, arg_list) |
| 755 | demangling_t dm; |
| 756 | template_arg_list_t arg_list; |
| 757 | { |
| 758 | while (dm->template_arg_lists != arg_list) |
| 759 | { |
| 760 | template_arg_list_t top = dm->template_arg_lists; |
| 761 | /* Disconnect the topmost element from the list. */ |
| 762 | dm->template_arg_lists = top->next; |
| 763 | /* Delete the popped element. */ |
| 764 | template_arg_list_delete (top); |
| 765 | #ifdef CP_DEMANGLE_DEBUG |
| 766 | fprintf (stderr, " ** removing template arg list\n"); |
| 767 | #endif |
| 768 | } |
| 769 | } |
| 770 | |
| 771 | #ifdef CP_DEMANGLE_DEBUG |
| 772 | |
| 773 | /* Prints the contents of ARG_LIST to FP. */ |
| 774 | |
| 775 | static void |
| 776 | template_arg_list_print (arg_list, fp) |
| 777 | template_arg_list_t arg_list; |
| 778 | FILE *fp; |
| 779 | { |
| 780 | string_list_t arg; |
| 781 | int index = -1; |
| 782 | |
| 783 | fprintf (fp, "TEMPLATE ARGUMENT LIST:\n"); |
| 784 | for (arg = arg_list->first_argument; arg != NULL; arg = arg->next) |
| 785 | { |
| 786 | if (index == -1) |
| 787 | fprintf (fp, " T_ : "); |
| 788 | else |
| 789 | fprintf (fp, " T%d_ : ", index); |
| 790 | ++index; |
| 791 | fprintf (fp, "%s\n", dyn_string_buf ((dyn_string_t) arg)); |
| 792 | } |
| 793 | } |
| 794 | |
| 795 | #endif /* CP_DEMANGLE_DEBUG */ |
| 796 | |
| 797 | /* Returns the topmost element on the stack of template argument |
| 798 | lists. If there is no list of template arguments, returns NULL. */ |
| 799 | |
| 800 | static template_arg_list_t |
| 801 | current_template_arg_list (dm) |
| 802 | demangling_t dm; |
| 803 | { |
| 804 | return dm->template_arg_lists; |
| 805 | } |
| 806 | |
| 807 | /* Allocates a demangling_t object for demangling mangled NAME. A new |
| 808 | result must be pushed before the returned object can be used. |
| 809 | Returns NULL if allocation fails. */ |
| 810 | |
| 811 | static demangling_t |
| 812 | demangling_new (name, style) |
| 813 | const char *name; |
| 814 | int style; |
| 815 | { |
| 816 | demangling_t dm; |
| 817 | dm = (demangling_t) malloc (sizeof (struct demangling_def)); |
| 818 | if (dm == NULL) |
| 819 | return NULL; |
| 820 | |
| 821 | dm->name = name; |
| 822 | dm->next = name; |
| 823 | dm->result = NULL; |
| 824 | dm->num_substitutions = 0; |
| 825 | dm->substitutions_allocated = 10; |
| 826 | dm->template_arg_lists = NULL; |
| 827 | dm->last_source_name = dyn_string_new (0); |
| 828 | if (dm->last_source_name == NULL) |
| 829 | return NULL; |
| 830 | dm->substitutions = (struct substitution_def *) |
| 831 | malloc (dm->substitutions_allocated * sizeof (struct substitution_def)); |
| 832 | if (dm->substitutions == NULL) |
| 833 | { |
| 834 | dyn_string_delete (dm->last_source_name); |
| 835 | return NULL; |
| 836 | } |
| 837 | dm->style = style; |
| 838 | dm->is_constructor = (enum gnu_v3_ctor_kinds) 0; |
| 839 | dm->is_destructor = (enum gnu_v3_dtor_kinds) 0; |
| 840 | |
| 841 | return dm; |
| 842 | } |
| 843 | |
| 844 | /* Deallocates a demangling_t object and all memory associated with |
| 845 | it. */ |
| 846 | |
| 847 | static void |
| 848 | demangling_delete (dm) |
| 849 | demangling_t dm; |
| 850 | { |
| 851 | int i; |
| 852 | template_arg_list_t arg_list = dm->template_arg_lists; |
| 853 | |
| 854 | /* Delete the stack of template argument lists. */ |
| 855 | while (arg_list != NULL) |
| 856 | { |
| 857 | template_arg_list_t next = arg_list->next; |
| 858 | template_arg_list_delete (arg_list); |
| 859 | arg_list = next; |
| 860 | } |
| 861 | /* Delete the list of substitutions. */ |
| 862 | for (i = dm->num_substitutions; --i >= 0; ) |
| 863 | dyn_string_delete (dm->substitutions[i].text); |
| 864 | free (dm->substitutions); |
| 865 | /* Delete the demangled result. */ |
| 866 | string_list_delete (dm->result); |
| 867 | /* Delete the stored identifier name. */ |
| 868 | dyn_string_delete (dm->last_source_name); |
| 869 | /* Delete the context object itself. */ |
| 870 | free (dm); |
| 871 | } |
| 872 | |
| 873 | /* These functions demangle an alternative of the corresponding |
| 874 | production in the mangling spec. The first argument of each is a |
| 875 | demangling context structure for the current demangling |
| 876 | operation. Most emit demangled text directly to the topmost result |
| 877 | string on the result string stack in the demangling context |
| 878 | structure. */ |
| 879 | |
| 880 | static status_t demangle_char |
| 881 | PARAMS ((demangling_t, int)); |
| 882 | static status_t demangle_mangled_name |
| 883 | PARAMS ((demangling_t)); |
| 884 | static status_t demangle_encoding |
| 885 | PARAMS ((demangling_t)); |
| 886 | static status_t demangle_name |
| 887 | PARAMS ((demangling_t, int *)); |
| 888 | static status_t demangle_nested_name |
| 889 | PARAMS ((demangling_t, int *)); |
| 890 | static status_t demangle_prefix |
| 891 | PARAMS ((demangling_t, int *)); |
| 892 | static status_t demangle_unqualified_name |
| 893 | PARAMS ((demangling_t, int *)); |
| 894 | static status_t demangle_source_name |
| 895 | PARAMS ((demangling_t)); |
| 896 | static status_t demangle_number |
| 897 | PARAMS ((demangling_t, int *, int, int)); |
| 898 | static status_t demangle_number_literally |
| 899 | PARAMS ((demangling_t, dyn_string_t, int, int)); |
| 900 | static status_t demangle_identifier |
| 901 | PARAMS ((demangling_t, int, dyn_string_t)); |
| 902 | static status_t demangle_operator_name |
| 903 | PARAMS ((demangling_t, int, int *, int *)); |
| 904 | static status_t demangle_nv_offset |
| 905 | PARAMS ((demangling_t)); |
| 906 | static status_t demangle_v_offset |
| 907 | PARAMS ((demangling_t)); |
| 908 | static status_t demangle_call_offset |
| 909 | PARAMS ((demangling_t)); |
| 910 | static status_t demangle_special_name |
| 911 | PARAMS ((demangling_t)); |
| 912 | static status_t demangle_ctor_dtor_name |
| 913 | PARAMS ((demangling_t)); |
| 914 | static status_t demangle_type_ptr |
| 915 | PARAMS ((demangling_t, int *, int)); |
| 916 | static status_t demangle_type |
| 917 | PARAMS ((demangling_t)); |
| 918 | static status_t demangle_CV_qualifiers |
| 919 | PARAMS ((demangling_t, dyn_string_t)); |
| 920 | static status_t demangle_builtin_type |
| 921 | PARAMS ((demangling_t)); |
| 922 | static status_t demangle_function_type |
| 923 | PARAMS ((demangling_t, int *)); |
| 924 | static status_t demangle_bare_function_type |
| 925 | PARAMS ((demangling_t, int *)); |
| 926 | static status_t demangle_class_enum_type |
| 927 | PARAMS ((demangling_t, int *)); |
| 928 | static status_t demangle_array_type |
| 929 | PARAMS ((demangling_t, int *)); |
| 930 | static status_t demangle_template_param |
| 931 | PARAMS ((demangling_t)); |
| 932 | static status_t demangle_template_args |
| 933 | PARAMS ((demangling_t)); |
| 934 | static status_t demangle_literal |
| 935 | PARAMS ((demangling_t)); |
| 936 | static status_t demangle_template_arg |
| 937 | PARAMS ((demangling_t)); |
| 938 | static status_t demangle_expression |
| 939 | PARAMS ((demangling_t)); |
| 940 | static status_t demangle_scope_expression |
| 941 | PARAMS ((demangling_t)); |
| 942 | static status_t demangle_expr_primary |
| 943 | PARAMS ((demangling_t)); |
| 944 | static status_t demangle_substitution |
| 945 | PARAMS ((demangling_t, int *)); |
| 946 | static status_t demangle_local_name |
| 947 | PARAMS ((demangling_t)); |
| 948 | static status_t demangle_discriminator |
| 949 | PARAMS ((demangling_t, int)); |
| 950 | static status_t cp_demangle |
| 951 | PARAMS ((const char *, dyn_string_t, int)); |
| 952 | static status_t cp_demangle_type |
| 953 | PARAMS ((const char*, dyn_string_t)); |
| 954 | |
| 955 | /* When passed to demangle_bare_function_type, indicates that the |
| 956 | function's return type is not encoded before its parameter types. */ |
| 957 | #define BFT_NO_RETURN_TYPE NULL |
| 958 | |
| 959 | /* Check that the next character is C. If so, consume it. If not, |
| 960 | return an error. */ |
| 961 | |
| 962 | static status_t |
| 963 | demangle_char (dm, c) |
| 964 | demangling_t dm; |
| 965 | int c; |
| 966 | { |
| 967 | static char *error_message = NULL; |
| 968 | |
| 969 | if (peek_char (dm) == c) |
| 970 | { |
| 971 | advance_char (dm); |
| 972 | return STATUS_OK; |
| 973 | } |
| 974 | else |
| 975 | { |
| 976 | if (error_message == NULL) |
| 977 | error_message = (char *) strdup ("Expected ?"); |
| 978 | error_message[9] = c; |
| 979 | return error_message; |
| 980 | } |
| 981 | } |
| 982 | |
| 983 | /* Demangles and emits a <mangled-name>. |
| 984 | |
| 985 | <mangled-name> ::= _Z <encoding> */ |
| 986 | |
| 987 | static status_t |
| 988 | demangle_mangled_name (dm) |
| 989 | demangling_t dm; |
| 990 | { |
| 991 | DEMANGLE_TRACE ("mangled-name", dm); |
| 992 | RETURN_IF_ERROR (demangle_char (dm, '_')); |
| 993 | RETURN_IF_ERROR (demangle_char (dm, 'Z')); |
| 994 | RETURN_IF_ERROR (demangle_encoding (dm)); |
| 995 | return STATUS_OK; |
| 996 | } |
| 997 | |
| 998 | /* Demangles and emits an <encoding>. |
| 999 | |
| 1000 | <encoding> ::= <function name> <bare-function-type> |
| 1001 | ::= <data name> |
| 1002 | ::= <special-name> */ |
| 1003 | |
| 1004 | static status_t |
| 1005 | demangle_encoding (dm) |
| 1006 | demangling_t dm; |
| 1007 | { |
| 1008 | int encode_return_type; |
| 1009 | int start_position; |
| 1010 | template_arg_list_t old_arg_list = current_template_arg_list (dm); |
| 1011 | char peek = peek_char (dm); |
| 1012 | |
| 1013 | DEMANGLE_TRACE ("encoding", dm); |
| 1014 | |
| 1015 | /* Remember where the name starts. If it turns out to be a template |
| 1016 | function, we'll have to insert the return type here. */ |
| 1017 | start_position = result_caret_pos (dm); |
| 1018 | |
| 1019 | if (peek == 'G' || peek == 'T') |
| 1020 | RETURN_IF_ERROR (demangle_special_name (dm)); |
| 1021 | else |
| 1022 | { |
| 1023 | /* Now demangle the name. */ |
| 1024 | RETURN_IF_ERROR (demangle_name (dm, &encode_return_type)); |
| 1025 | |
| 1026 | /* If there's anything left, the name was a function name, with |
| 1027 | maybe its return type, and its parameter types, following. */ |
| 1028 | if (!end_of_name_p (dm) |
| 1029 | && peek_char (dm) != 'E') |
| 1030 | { |
| 1031 | if (encode_return_type) |
| 1032 | /* Template functions have their return type encoded. The |
| 1033 | return type should be inserted at start_position. */ |
| 1034 | RETURN_IF_ERROR |
| 1035 | (demangle_bare_function_type (dm, &start_position)); |
| 1036 | else |
| 1037 | /* Non-template functions don't have their return type |
| 1038 | encoded. */ |
| 1039 | RETURN_IF_ERROR |
| 1040 | (demangle_bare_function_type (dm, BFT_NO_RETURN_TYPE)); |
| 1041 | } |
| 1042 | } |
| 1043 | |
| 1044 | /* Pop off template argument lists that were built during the |
| 1045 | mangling of this name, to restore the old template context. */ |
| 1046 | pop_to_template_arg_list (dm, old_arg_list); |
| 1047 | |
| 1048 | return STATUS_OK; |
| 1049 | } |
| 1050 | |
| 1051 | /* Demangles and emits a <name>. |
| 1052 | |
| 1053 | <name> ::= <unscoped-name> |
| 1054 | ::= <unscoped-template-name> <template-args> |
| 1055 | ::= <nested-name> |
| 1056 | ::= <local-name> |
| 1057 | |
| 1058 | <unscoped-name> ::= <unqualified-name> |
| 1059 | ::= St <unqualified-name> # ::std:: |
| 1060 | |
| 1061 | <unscoped-template-name> |
| 1062 | ::= <unscoped-name> |
| 1063 | ::= <substitution> */ |
| 1064 | |
| 1065 | static status_t |
| 1066 | demangle_name (dm, encode_return_type) |
| 1067 | demangling_t dm; |
| 1068 | int *encode_return_type; |
| 1069 | { |
| 1070 | int start = substitution_start (dm); |
| 1071 | char peek = peek_char (dm); |
| 1072 | int is_std_substitution = 0; |
| 1073 | |
| 1074 | /* Generally, the return type is encoded if the function is a |
| 1075 | template-id, and suppressed otherwise. There are a few cases, |
| 1076 | though, in which the return type is not encoded even for a |
| 1077 | templated function. In these cases, this flag is set. */ |
| 1078 | int suppress_return_type = 0; |
| 1079 | |
| 1080 | DEMANGLE_TRACE ("name", dm); |
| 1081 | |
| 1082 | switch (peek) |
| 1083 | { |
| 1084 | case 'N': |
| 1085 | /* This is a <nested-name>. */ |
| 1086 | RETURN_IF_ERROR (demangle_nested_name (dm, encode_return_type)); |
| 1087 | break; |
| 1088 | |
| 1089 | case 'Z': |
| 1090 | RETURN_IF_ERROR (demangle_local_name (dm)); |
| 1091 | *encode_return_type = 0; |
| 1092 | break; |
| 1093 | |
| 1094 | case 'S': |
| 1095 | /* The `St' substitution allows a name nested in std:: to appear |
| 1096 | without being enclosed in a nested name. */ |
| 1097 | if (peek_char_next (dm) == 't') |
| 1098 | { |
| 1099 | (void) next_char (dm); |
| 1100 | (void) next_char (dm); |
| 1101 | RETURN_IF_ERROR (result_add (dm, "std::")); |
| 1102 | RETURN_IF_ERROR |
| 1103 | (demangle_unqualified_name (dm, &suppress_return_type)); |
| 1104 | is_std_substitution = 1; |
| 1105 | } |
| 1106 | else |
| 1107 | RETURN_IF_ERROR (demangle_substitution (dm, encode_return_type)); |
| 1108 | /* Check if a template argument list immediately follows. |
| 1109 | If so, then we just demangled an <unqualified-template-name>. */ |
| 1110 | if (peek_char (dm) == 'I') |
| 1111 | { |
| 1112 | /* A template name of the form std::<unqualified-name> is a |
| 1113 | substitution candidate. */ |
| 1114 | if (is_std_substitution) |
| 1115 | RETURN_IF_ERROR (substitution_add (dm, start, 0)); |
| 1116 | /* Demangle the <template-args> here. */ |
| 1117 | RETURN_IF_ERROR (demangle_template_args (dm)); |
| 1118 | *encode_return_type = !suppress_return_type; |
| 1119 | } |
| 1120 | else |
| 1121 | *encode_return_type = 0; |
| 1122 | |
| 1123 | break; |
| 1124 | |
| 1125 | default: |
| 1126 | /* This is an <unscoped-name> or <unscoped-template-name>. */ |
| 1127 | RETURN_IF_ERROR (demangle_unqualified_name (dm, &suppress_return_type)); |
| 1128 | |
| 1129 | /* If the <unqualified-name> is followed by template args, this |
| 1130 | is an <unscoped-template-name>. */ |
| 1131 | if (peek_char (dm) == 'I') |
| 1132 | { |
| 1133 | /* Add a substitution for the unqualified template name. */ |
| 1134 | RETURN_IF_ERROR (substitution_add (dm, start, 0)); |
| 1135 | |
| 1136 | RETURN_IF_ERROR (demangle_template_args (dm)); |
| 1137 | *encode_return_type = !suppress_return_type; |
| 1138 | } |
| 1139 | else |
| 1140 | *encode_return_type = 0; |
| 1141 | |
| 1142 | break; |
| 1143 | } |
| 1144 | |
| 1145 | return STATUS_OK; |
| 1146 | } |
| 1147 | |
| 1148 | /* Demangles and emits a <nested-name>. |
| 1149 | |
| 1150 | <nested-name> ::= N [<CV-qualifiers>] <prefix> <unqulified-name> E */ |
| 1151 | |
| 1152 | static status_t |
| 1153 | demangle_nested_name (dm, encode_return_type) |
| 1154 | demangling_t dm; |
| 1155 | int *encode_return_type; |
| 1156 | { |
| 1157 | char peek; |
| 1158 | |
| 1159 | DEMANGLE_TRACE ("nested-name", dm); |
| 1160 | |
| 1161 | RETURN_IF_ERROR (demangle_char (dm, 'N')); |
| 1162 | |
| 1163 | peek = peek_char (dm); |
| 1164 | if (peek == 'r' || peek == 'V' || peek == 'K') |
| 1165 | { |
| 1166 | dyn_string_t cv_qualifiers; |
| 1167 | status_t status; |
| 1168 | |
| 1169 | /* Snarf up CV qualifiers. */ |
| 1170 | cv_qualifiers = dyn_string_new (24); |
| 1171 | if (cv_qualifiers == NULL) |
| 1172 | return STATUS_ALLOCATION_FAILED; |
| 1173 | demangle_CV_qualifiers (dm, cv_qualifiers); |
| 1174 | |
| 1175 | /* Emit them, preceded by a space. */ |
| 1176 | status = result_add_char (dm, ' '); |
| 1177 | if (STATUS_NO_ERROR (status)) |
| 1178 | status = result_add_string (dm, cv_qualifiers); |
| 1179 | /* The CV qualifiers that occur in a <nested-name> will be |
| 1180 | qualifiers for member functions. These are placed at the end |
| 1181 | of the function. Therefore, shift the caret to the left by |
| 1182 | the length of the qualifiers, so other text is inserted |
| 1183 | before them and they stay at the end. */ |
| 1184 | result_shift_caret (dm, -dyn_string_length (cv_qualifiers) - 1); |
| 1185 | /* Clean up. */ |
| 1186 | dyn_string_delete (cv_qualifiers); |
| 1187 | RETURN_IF_ERROR (status); |
| 1188 | } |
| 1189 | |
| 1190 | RETURN_IF_ERROR (demangle_prefix (dm, encode_return_type)); |
| 1191 | /* No need to demangle the final <unqualified-name>; demangle_prefix |
| 1192 | will handle it. */ |
| 1193 | RETURN_IF_ERROR (demangle_char (dm, 'E')); |
| 1194 | |
| 1195 | return STATUS_OK; |
| 1196 | } |
| 1197 | |
| 1198 | /* Demangles and emits a <prefix>. |
| 1199 | |
| 1200 | <prefix> ::= <prefix> <unqualified-name> |
| 1201 | ::= <template-prefix> <template-args> |
| 1202 | ::= # empty |
| 1203 | ::= <substitution> |
| 1204 | |
| 1205 | <template-prefix> ::= <prefix> |
| 1206 | ::= <substitution> */ |
| 1207 | |
| 1208 | static status_t |
| 1209 | demangle_prefix (dm, encode_return_type) |
| 1210 | demangling_t dm; |
| 1211 | int *encode_return_type; |
| 1212 | { |
| 1213 | int start = substitution_start (dm); |
| 1214 | int nested = 0; |
| 1215 | |
| 1216 | /* ENCODE_RETURN_TYPE is updated as we decend the nesting chain. |
| 1217 | After <template-args>, it is set to non-zero; after everything |
| 1218 | else it is set to zero. */ |
| 1219 | |
| 1220 | /* Generally, the return type is encoded if the function is a |
| 1221 | template-id, and suppressed otherwise. There are a few cases, |
| 1222 | though, in which the return type is not encoded even for a |
| 1223 | templated function. In these cases, this flag is set. */ |
| 1224 | int suppress_return_type = 0; |
| 1225 | |
| 1226 | DEMANGLE_TRACE ("prefix", dm); |
| 1227 | |
| 1228 | while (1) |
| 1229 | { |
| 1230 | char peek; |
| 1231 | |
| 1232 | if (end_of_name_p (dm)) |
| 1233 | return "Unexpected end of name in <compound-name>."; |
| 1234 | |
| 1235 | peek = peek_char (dm); |
| 1236 | |
| 1237 | /* We'll initialize suppress_return_type to false, and set it to true |
| 1238 | if we end up demangling a constructor name. However, make |
| 1239 | sure we're not actually about to demangle template arguments |
| 1240 | -- if so, this is the <template-args> following a |
| 1241 | <template-prefix>, so we'll want the previous flag value |
| 1242 | around. */ |
| 1243 | if (peek != 'I') |
| 1244 | suppress_return_type = 0; |
| 1245 | |
| 1246 | if (IS_DIGIT ((unsigned char) peek) |
| 1247 | || (peek >= 'a' && peek <= 'z') |
| 1248 | || peek == 'C' || peek == 'D' |
| 1249 | || peek == 'S') |
| 1250 | { |
| 1251 | /* We have another level of scope qualification. */ |
| 1252 | if (nested) |
| 1253 | RETURN_IF_ERROR (result_add (dm, NAMESPACE_SEPARATOR)); |
| 1254 | else |
| 1255 | nested = 1; |
| 1256 | |
| 1257 | if (peek == 'S') |
| 1258 | /* The substitution determines whether this is a |
| 1259 | template-id. */ |
| 1260 | RETURN_IF_ERROR (demangle_substitution (dm, encode_return_type)); |
| 1261 | else |
| 1262 | { |
| 1263 | /* It's just a name. */ |
| 1264 | RETURN_IF_ERROR |
| 1265 | (demangle_unqualified_name (dm, &suppress_return_type)); |
| 1266 | *encode_return_type = 0; |
| 1267 | } |
| 1268 | } |
| 1269 | else if (peek == 'Z') |
| 1270 | RETURN_IF_ERROR (demangle_local_name (dm)); |
| 1271 | else if (peek == 'I') |
| 1272 | { |
| 1273 | RETURN_IF_ERROR (demangle_template_args (dm)); |
| 1274 | |
| 1275 | /* Now we want to indicate to the caller that we've |
| 1276 | demangled template arguments, thus the prefix was a |
| 1277 | <template-prefix>. That's so that the caller knows to |
| 1278 | demangle the function's return type, if this turns out to |
| 1279 | be a function name. But, if it's a member template |
| 1280 | constructor or a templated conversion operator, report it |
| 1281 | as untemplated. Those never get encoded return types. */ |
| 1282 | *encode_return_type = !suppress_return_type; |
| 1283 | } |
| 1284 | else if (peek == 'E') |
| 1285 | /* All done. */ |
| 1286 | return STATUS_OK; |
| 1287 | else |
| 1288 | return "Unexpected character in <compound-name>."; |
| 1289 | |
| 1290 | if (peek != 'S' |
| 1291 | && peek_char (dm) != 'E') |
| 1292 | /* Add a new substitution for the prefix thus far. */ |
| 1293 | RETURN_IF_ERROR (substitution_add (dm, start, *encode_return_type)); |
| 1294 | } |
| 1295 | } |
| 1296 | |
| 1297 | /* Demangles and emits an <unqualified-name>. If this |
| 1298 | <unqualified-name> is for a special function type that should never |
| 1299 | have its return type encoded (particularly, a constructor or |
| 1300 | conversion operator), *SUPPRESS_RETURN_TYPE is set to 1; otherwise, |
| 1301 | it is set to zero. |
| 1302 | |
| 1303 | <unqualified-name> ::= <operator-name> |
| 1304 | ::= <special-name> |
| 1305 | ::= <source-name> */ |
| 1306 | |
| 1307 | static status_t |
| 1308 | demangle_unqualified_name (dm, suppress_return_type) |
| 1309 | demangling_t dm; |
| 1310 | int *suppress_return_type; |
| 1311 | { |
| 1312 | char peek = peek_char (dm); |
| 1313 | |
| 1314 | DEMANGLE_TRACE ("unqualified-name", dm); |
| 1315 | |
| 1316 | /* By default, don't force suppression of the return type (though |
| 1317 | non-template functions still don't get a return type encoded). */ |
| 1318 | *suppress_return_type = 0; |
| 1319 | |
| 1320 | if (IS_DIGIT ((unsigned char) peek)) |
| 1321 | RETURN_IF_ERROR (demangle_source_name (dm)); |
| 1322 | else if (peek >= 'a' && peek <= 'z') |
| 1323 | { |
| 1324 | int num_args; |
| 1325 | |
| 1326 | /* Conversion operators never have a return type encoded. */ |
| 1327 | if (peek == 'c' && peek_char_next (dm) == 'v') |
| 1328 | *suppress_return_type = 1; |
| 1329 | |
| 1330 | RETURN_IF_ERROR (demangle_operator_name (dm, 0, &num_args, NULL)); |
| 1331 | } |
| 1332 | else if (peek == 'C' || peek == 'D') |
| 1333 | { |
| 1334 | /* Constructors never have a return type encoded. */ |
| 1335 | if (peek == 'C') |
| 1336 | *suppress_return_type = 1; |
| 1337 | |
| 1338 | RETURN_IF_ERROR (demangle_ctor_dtor_name (dm)); |
| 1339 | } |
| 1340 | else |
| 1341 | return "Unexpected character in <unqualified-name>."; |
| 1342 | |
| 1343 | return STATUS_OK; |
| 1344 | } |
| 1345 | |
| 1346 | /* Demangles and emits <source-name>. |
| 1347 | |
| 1348 | <source-name> ::= <length number> <identifier> */ |
| 1349 | |
| 1350 | static status_t |
| 1351 | demangle_source_name (dm) |
| 1352 | demangling_t dm; |
| 1353 | { |
| 1354 | int length; |
| 1355 | |
| 1356 | DEMANGLE_TRACE ("source-name", dm); |
| 1357 | |
| 1358 | /* Decode the length of the identifier. */ |
| 1359 | RETURN_IF_ERROR (demangle_number (dm, &length, 10, 0)); |
| 1360 | if (length == 0) |
| 1361 | return "Zero length in <source-name>."; |
| 1362 | |
| 1363 | /* Now the identifier itself. It's placed into last_source_name, |
| 1364 | where it can be used to build a constructor or destructor name. */ |
| 1365 | RETURN_IF_ERROR (demangle_identifier (dm, length, |
| 1366 | dm->last_source_name)); |
| 1367 | |
| 1368 | /* Emit it. */ |
| 1369 | RETURN_IF_ERROR (result_add_string (dm, dm->last_source_name)); |
| 1370 | |
| 1371 | return STATUS_OK; |
| 1372 | } |
| 1373 | |
| 1374 | /* Demangles a number, either a <number> or a <positive-number> at the |
| 1375 | current position, consuming all consecutive digit characters. Sets |
| 1376 | *VALUE to the resulting numberand returns STATUS_OK. The number is |
| 1377 | interpreted as BASE, which must be either 10 or 36. If IS_SIGNED |
| 1378 | is non-zero, negative numbers -- prefixed with `n' -- are accepted. |
| 1379 | |
| 1380 | <number> ::= [n] <positive-number> |
| 1381 | |
| 1382 | <positive-number> ::= <decimal integer> */ |
| 1383 | |
| 1384 | static status_t |
| 1385 | demangle_number (dm, value, base, is_signed) |
| 1386 | demangling_t dm; |
| 1387 | int *value; |
| 1388 | int base; |
| 1389 | int is_signed; |
| 1390 | { |
| 1391 | dyn_string_t number = dyn_string_new (10); |
| 1392 | |
| 1393 | DEMANGLE_TRACE ("number", dm); |
| 1394 | |
| 1395 | if (number == NULL) |
| 1396 | return STATUS_ALLOCATION_FAILED; |
| 1397 | |
| 1398 | demangle_number_literally (dm, number, base, is_signed); |
| 1399 | *value = strtol (dyn_string_buf (number), NULL, base); |
| 1400 | dyn_string_delete (number); |
| 1401 | |
| 1402 | return STATUS_OK; |
| 1403 | } |
| 1404 | |
| 1405 | /* Demangles a number at the current position. The digits (and minus |
| 1406 | sign, if present) that make up the number are appended to STR. |
| 1407 | Only base-BASE digits are accepted; BASE must be either 10 or 36. |
| 1408 | If IS_SIGNED, negative numbers -- prefixed with `n' -- are |
| 1409 | accepted. Does not consume a trailing underscore or other |
| 1410 | terminating character. */ |
| 1411 | |
| 1412 | static status_t |
| 1413 | demangle_number_literally (dm, str, base, is_signed) |
| 1414 | demangling_t dm; |
| 1415 | dyn_string_t str; |
| 1416 | int base; |
| 1417 | int is_signed; |
| 1418 | { |
| 1419 | DEMANGLE_TRACE ("number*", dm); |
| 1420 | |
| 1421 | if (base != 10 && base != 36) |
| 1422 | return STATUS_INTERNAL_ERROR; |
| 1423 | |
| 1424 | /* An `n' denotes a negative number. */ |
| 1425 | if (is_signed && peek_char (dm) == 'n') |
| 1426 | { |
| 1427 | /* Skip past the n. */ |
| 1428 | advance_char (dm); |
| 1429 | /* The normal way to write a negative number is with a minus |
| 1430 | sign. */ |
| 1431 | if (!dyn_string_append_char (str, '-')) |
| 1432 | return STATUS_ALLOCATION_FAILED; |
| 1433 | } |
| 1434 | |
| 1435 | /* Loop until we hit a non-digit. */ |
| 1436 | while (1) |
| 1437 | { |
| 1438 | char peek = peek_char (dm); |
| 1439 | if (IS_DIGIT ((unsigned char) peek) |
| 1440 | || (base == 36 && peek >= 'A' && peek <= 'Z')) |
| 1441 | { |
| 1442 | /* Accumulate digits. */ |
| 1443 | if (!dyn_string_append_char (str, next_char (dm))) |
| 1444 | return STATUS_ALLOCATION_FAILED; |
| 1445 | } |
| 1446 | else |
| 1447 | /* Not a digit? All done. */ |
| 1448 | break; |
| 1449 | } |
| 1450 | |
| 1451 | return STATUS_OK; |
| 1452 | } |
| 1453 | |
| 1454 | /* Demangles an identifier at the current position of LENGTH |
| 1455 | characters and places it in IDENTIFIER. */ |
| 1456 | |
| 1457 | static status_t |
| 1458 | demangle_identifier (dm, length, identifier) |
| 1459 | demangling_t dm; |
| 1460 | int length; |
| 1461 | dyn_string_t identifier; |
| 1462 | { |
| 1463 | DEMANGLE_TRACE ("identifier", dm); |
| 1464 | |
| 1465 | dyn_string_clear (identifier); |
| 1466 | if (!dyn_string_resize (identifier, length)) |
| 1467 | return STATUS_ALLOCATION_FAILED; |
| 1468 | |
| 1469 | while (length-- > 0) |
| 1470 | { |
| 1471 | int ch; |
| 1472 | if (end_of_name_p (dm)) |
| 1473 | return "Unexpected end of name in <identifier>."; |
| 1474 | ch = next_char (dm); |
| 1475 | |
| 1476 | /* Handle extended Unicode characters. We encode them as __U{hex}_, |
| 1477 | where {hex} omits leading 0's. For instance, '$' is encoded as |
| 1478 | "__U24_". */ |
| 1479 | if (ch == '_' |
| 1480 | && peek_char (dm) == '_' |
| 1481 | && peek_char_next (dm) == 'U') |
| 1482 | { |
| 1483 | char buf[10]; |
| 1484 | int pos = 0; |
| 1485 | advance_char (dm); advance_char (dm); length -= 2; |
| 1486 | while (length-- > 0) |
| 1487 | { |
| 1488 | ch = next_char (dm); |
| 1489 | if (!isxdigit (ch)) |
| 1490 | break; |
| 1491 | buf[pos++] = ch; |
| 1492 | } |
| 1493 | if (ch != '_' || length < 0) |
| 1494 | return STATUS_ERROR; |
| 1495 | if (pos == 0) |
| 1496 | { |
| 1497 | /* __U_ just means __U. */ |
| 1498 | if (!dyn_string_append_cstr (identifier, "__U")) |
| 1499 | return STATUS_ALLOCATION_FAILED; |
| 1500 | continue; |
| 1501 | } |
| 1502 | else |
| 1503 | { |
| 1504 | buf[pos] = '\0'; |
| 1505 | ch = strtol (buf, 0, 16); |
| 1506 | } |
| 1507 | } |
| 1508 | |
| 1509 | if (!dyn_string_append_char (identifier, ch)) |
| 1510 | return STATUS_ALLOCATION_FAILED; |
| 1511 | } |
| 1512 | |
| 1513 | /* GCC encodes anonymous namespaces using a `_GLOBAL_[_.$]N.' |
| 1514 | followed by the source file name and some random characters. |
| 1515 | Unless we're in strict mode, decipher these names appropriately. */ |
| 1516 | if (!flag_strict) |
| 1517 | { |
| 1518 | char *name = dyn_string_buf (identifier); |
| 1519 | int prefix_length = strlen (ANONYMOUS_NAMESPACE_PREFIX); |
| 1520 | |
| 1521 | /* Compare the first, fixed part. */ |
| 1522 | if (strncmp (name, ANONYMOUS_NAMESPACE_PREFIX, prefix_length) == 0) |
| 1523 | { |
| 1524 | name += prefix_length; |
| 1525 | /* The next character might be a period, an underscore, or |
| 1526 | dollar sign, depending on the target architecture's |
| 1527 | assembler's capabilities. After that comes an `N'. */ |
| 1528 | if ((*name == '.' || *name == '_' || *name == '$') |
| 1529 | && *(name + 1) == 'N') |
| 1530 | /* This looks like the anonymous namespace identifier. |
| 1531 | Replace it with something comprehensible. */ |
| 1532 | dyn_string_copy_cstr (identifier, "(anonymous namespace)"); |
| 1533 | } |
| 1534 | } |
| 1535 | |
| 1536 | return STATUS_OK; |
| 1537 | } |
| 1538 | |
| 1539 | /* Demangles and emits an <operator-name>. If SHORT_NAME is non-zero, |
| 1540 | the short form is emitted; otherwise the full source form |
| 1541 | (`operator +' etc.) is emitted. *NUM_ARGS is set to the number of |
| 1542 | operands that the operator takes. If TYPE_ARG is non-NULL, |
| 1543 | *TYPE_ARG is set to 1 if the first argument is a type and 0 |
| 1544 | otherwise. |
| 1545 | |
| 1546 | <operator-name> |
| 1547 | ::= nw # new |
| 1548 | ::= na # new[] |
| 1549 | ::= dl # delete |
| 1550 | ::= da # delete[] |
| 1551 | ::= ps # + (unary) |
| 1552 | ::= ng # - (unary) |
| 1553 | ::= ad # & (unary) |
| 1554 | ::= de # * (unary) |
| 1555 | ::= co # ~ |
| 1556 | ::= pl # + |
| 1557 | ::= mi # - |
| 1558 | ::= ml # * |
| 1559 | ::= dv # / |
| 1560 | ::= rm # % |
| 1561 | ::= an # & |
| 1562 | ::= or # | |
| 1563 | ::= eo # ^ |
| 1564 | ::= aS # = |
| 1565 | ::= pL # += |
| 1566 | ::= mI # -= |
| 1567 | ::= mL # *= |
| 1568 | ::= dV # /= |
| 1569 | ::= rM # %= |
| 1570 | ::= aN # &= |
| 1571 | ::= oR # |= |
| 1572 | ::= eO # ^= |
| 1573 | ::= ls # << |
| 1574 | ::= rs # >> |
| 1575 | ::= lS # <<= |
| 1576 | ::= rS # >>= |
| 1577 | ::= eq # == |
| 1578 | ::= ne # != |
| 1579 | ::= lt # < |
| 1580 | ::= gt # > |
| 1581 | ::= le # <= |
| 1582 | ::= ge # >= |
| 1583 | ::= nt # ! |
| 1584 | ::= aa # && |
| 1585 | ::= oo # || |
| 1586 | ::= pp # ++ |
| 1587 | ::= mm # -- |
| 1588 | ::= cm # , |
| 1589 | ::= pm # ->* |
| 1590 | ::= pt # -> |
| 1591 | ::= cl # () |
| 1592 | ::= ix # [] |
| 1593 | ::= qu # ? |
| 1594 | ::= st # sizeof (a type) |
| 1595 | ::= sz # sizeof (an expression) |
| 1596 | ::= cv <type> # cast |
| 1597 | ::= v [0-9] <source-name> # vendor extended operator */ |
| 1598 | |
| 1599 | static status_t |
| 1600 | demangle_operator_name (dm, short_name, num_args, type_arg) |
| 1601 | demangling_t dm; |
| 1602 | int short_name; |
| 1603 | int *num_args; |
| 1604 | int *type_arg; |
| 1605 | { |
| 1606 | struct operator_code |
| 1607 | { |
| 1608 | /* The mangled code for this operator. */ |
| 1609 | const char *const code; |
| 1610 | /* The source name of this operator. */ |
| 1611 | const char *const name; |
| 1612 | /* The number of arguments this operator takes. */ |
| 1613 | const int num_args; |
| 1614 | }; |
| 1615 | |
| 1616 | static const struct operator_code operators[] = |
| 1617 | { |
| 1618 | { "aN", "&=" , 2 }, |
| 1619 | { "aS", "=" , 2 }, |
| 1620 | { "aa", "&&" , 2 }, |
| 1621 | { "ad", "&" , 1 }, |
| 1622 | { "an", "&" , 2 }, |
| 1623 | { "cl", "()" , 0 }, |
| 1624 | { "cm", "," , 2 }, |
| 1625 | { "co", "~" , 1 }, |
| 1626 | { "dV", "/=" , 2 }, |
| 1627 | { "da", " delete[]", 1 }, |
| 1628 | { "de", "*" , 1 }, |
| 1629 | { "dl", " delete" , 1 }, |
| 1630 | { "dv", "/" , 2 }, |
| 1631 | { "eO", "^=" , 2 }, |
| 1632 | { "eo", "^" , 2 }, |
| 1633 | { "eq", "==" , 2 }, |
| 1634 | { "ge", ">=" , 2 }, |
| 1635 | { "gt", ">" , 2 }, |
| 1636 | { "ix", "[]" , 2 }, |
| 1637 | { "lS", "<<=" , 2 }, |
| 1638 | { "le", "<=" , 2 }, |
| 1639 | { "ls", "<<" , 2 }, |
| 1640 | { "lt", "<" , 2 }, |
| 1641 | { "mI", "-=" , 2 }, |
| 1642 | { "mL", "*=" , 2 }, |
| 1643 | { "mi", "-" , 2 }, |
| 1644 | { "ml", "*" , 2 }, |
| 1645 | { "mm", "--" , 1 }, |
| 1646 | { "na", " new[]" , 1 }, |
| 1647 | { "ne", "!=" , 2 }, |
| 1648 | { "ng", "-" , 1 }, |
| 1649 | { "nt", "!" , 1 }, |
| 1650 | { "nw", " new" , 1 }, |
| 1651 | { "oR", "|=" , 2 }, |
| 1652 | { "oo", "||" , 2 }, |
| 1653 | { "or", "|" , 2 }, |
| 1654 | { "pL", "+=" , 2 }, |
| 1655 | { "pl", "+" , 2 }, |
| 1656 | { "pm", "->*" , 2 }, |
| 1657 | { "pp", "++" , 1 }, |
| 1658 | { "ps", "+" , 1 }, |
| 1659 | { "pt", "->" , 2 }, |
| 1660 | { "qu", "?" , 3 }, |
| 1661 | { "rM", "%=" , 2 }, |
| 1662 | { "rS", ">>=" , 2 }, |
| 1663 | { "rm", "%" , 2 }, |
| 1664 | { "rs", ">>" , 2 }, |
| 1665 | { "sz", " sizeof" , 1 } |
| 1666 | }; |
| 1667 | |
| 1668 | const int num_operators = |
| 1669 | sizeof (operators) / sizeof (struct operator_code); |
| 1670 | |
| 1671 | int c0 = next_char (dm); |
| 1672 | int c1 = next_char (dm); |
| 1673 | const struct operator_code* p1 = operators; |
| 1674 | const struct operator_code* p2 = operators + num_operators; |
| 1675 | |
| 1676 | DEMANGLE_TRACE ("operator-name", dm); |
| 1677 | |
| 1678 | /* Assume the first argument is not a type. */ |
| 1679 | if (type_arg) |
| 1680 | *type_arg = 0; |
| 1681 | |
| 1682 | /* Is this a vendor-extended operator? */ |
| 1683 | if (c0 == 'v' && IS_DIGIT (c1)) |
| 1684 | { |
| 1685 | RETURN_IF_ERROR (result_add (dm, "operator ")); |
| 1686 | RETURN_IF_ERROR (demangle_source_name (dm)); |
| 1687 | *num_args = 0; |
| 1688 | return STATUS_OK; |
| 1689 | } |
| 1690 | |
| 1691 | /* Is this a conversion operator? */ |
| 1692 | if (c0 == 'c' && c1 == 'v') |
| 1693 | { |
| 1694 | RETURN_IF_ERROR (result_add (dm, "operator ")); |
| 1695 | /* Demangle the converted-to type. */ |
| 1696 | RETURN_IF_ERROR (demangle_type (dm)); |
| 1697 | *num_args = 0; |
| 1698 | return STATUS_OK; |
| 1699 | } |
| 1700 | |
| 1701 | /* Is it the sizeof variant that takes a type? */ |
| 1702 | if (c0 == 's' && c1 == 't') |
| 1703 | { |
| 1704 | RETURN_IF_ERROR (result_add (dm, " sizeof")); |
| 1705 | *num_args = 1; |
| 1706 | if (type_arg) |
| 1707 | *type_arg = 1; |
| 1708 | return STATUS_OK; |
| 1709 | } |
| 1710 | |
| 1711 | /* Perform a binary search for the operator code. */ |
| 1712 | while (1) |
| 1713 | { |
| 1714 | const struct operator_code* p = p1 + (p2 - p1) / 2; |
| 1715 | char match0 = p->code[0]; |
| 1716 | char match1 = p->code[1]; |
| 1717 | |
| 1718 | if (c0 == match0 && c1 == match1) |
| 1719 | /* Found it. */ |
| 1720 | { |
| 1721 | if (!short_name) |
| 1722 | RETURN_IF_ERROR (result_add (dm, "operator")); |
| 1723 | RETURN_IF_ERROR (result_add (dm, p->name)); |
| 1724 | *num_args = p->num_args; |
| 1725 | |
| 1726 | return STATUS_OK; |
| 1727 | } |
| 1728 | |
| 1729 | if (p == p1) |
| 1730 | /* Couldn't find it. */ |
| 1731 | return "Unknown code in <operator-name>."; |
| 1732 | |
| 1733 | /* Try again. */ |
| 1734 | if (c0 < match0 || (c0 == match0 && c1 < match1)) |
| 1735 | p2 = p; |
| 1736 | else |
| 1737 | p1 = p; |
| 1738 | } |
| 1739 | } |
| 1740 | |
| 1741 | /* Demangles and omits an <nv-offset>. |
| 1742 | |
| 1743 | <nv-offset> ::= <offset number> # non-virtual base override */ |
| 1744 | |
| 1745 | static status_t |
| 1746 | demangle_nv_offset (dm) |
| 1747 | demangling_t dm; |
| 1748 | { |
| 1749 | dyn_string_t number; |
| 1750 | status_t status = STATUS_OK; |
| 1751 | |
| 1752 | DEMANGLE_TRACE ("h-offset", dm); |
| 1753 | |
| 1754 | /* Demangle the offset. */ |
| 1755 | number = dyn_string_new (4); |
| 1756 | if (number == NULL) |
| 1757 | return STATUS_ALLOCATION_FAILED; |
| 1758 | demangle_number_literally (dm, number, 10, 1); |
| 1759 | |
| 1760 | /* Don't display the offset unless in verbose mode. */ |
| 1761 | if (flag_verbose) |
| 1762 | { |
| 1763 | status = result_add (dm, " [nv:"); |
| 1764 | if (STATUS_NO_ERROR (status)) |
| 1765 | status = result_add_string (dm, number); |
| 1766 | if (STATUS_NO_ERROR (status)) |
| 1767 | status = result_add_char (dm, ']'); |
| 1768 | } |
| 1769 | |
| 1770 | /* Clean up. */ |
| 1771 | dyn_string_delete (number); |
| 1772 | RETURN_IF_ERROR (status); |
| 1773 | return STATUS_OK; |
| 1774 | } |
| 1775 | |
| 1776 | /* Demangles and emits a <v-offset>. |
| 1777 | |
| 1778 | <v-offset> ::= <offset number> _ <virtual offset number> |
| 1779 | # virtual base override, with vcall offset */ |
| 1780 | |
| 1781 | static status_t |
| 1782 | demangle_v_offset (dm) |
| 1783 | demangling_t dm; |
| 1784 | { |
| 1785 | dyn_string_t number; |
| 1786 | status_t status = STATUS_OK; |
| 1787 | |
| 1788 | DEMANGLE_TRACE ("v-offset", dm); |
| 1789 | |
| 1790 | /* Demangle the offset. */ |
| 1791 | number = dyn_string_new (4); |
| 1792 | if (number == NULL) |
| 1793 | return STATUS_ALLOCATION_FAILED; |
| 1794 | demangle_number_literally (dm, number, 10, 1); |
| 1795 | |
| 1796 | /* Don't display the offset unless in verbose mode. */ |
| 1797 | if (flag_verbose) |
| 1798 | { |
| 1799 | status = result_add (dm, " [v:"); |
| 1800 | if (STATUS_NO_ERROR (status)) |
| 1801 | status = result_add_string (dm, number); |
| 1802 | if (STATUS_NO_ERROR (status)) |
| 1803 | result_add_char (dm, ','); |
| 1804 | } |
| 1805 | dyn_string_delete (number); |
| 1806 | RETURN_IF_ERROR (status); |
| 1807 | |
| 1808 | /* Demangle the separator. */ |
| 1809 | RETURN_IF_ERROR (demangle_char (dm, '_')); |
| 1810 | |
| 1811 | /* Demangle the vcall offset. */ |
| 1812 | number = dyn_string_new (4); |
| 1813 | if (number == NULL) |
| 1814 | return STATUS_ALLOCATION_FAILED; |
| 1815 | demangle_number_literally (dm, number, 10, 1); |
| 1816 | |
| 1817 | /* Don't display the vcall offset unless in verbose mode. */ |
| 1818 | if (flag_verbose) |
| 1819 | { |
| 1820 | status = result_add_string (dm, number); |
| 1821 | if (STATUS_NO_ERROR (status)) |
| 1822 | status = result_add_char (dm, ']'); |
| 1823 | } |
| 1824 | dyn_string_delete (number); |
| 1825 | RETURN_IF_ERROR (status); |
| 1826 | |
| 1827 | return STATUS_OK; |
| 1828 | } |
| 1829 | |
| 1830 | /* Demangles and emits a <call-offset>. |
| 1831 | |
| 1832 | <call-offset> ::= h <nv-offset> _ |
| 1833 | ::= v <v-offset> _ */ |
| 1834 | |
| 1835 | static status_t |
| 1836 | demangle_call_offset (dm) |
| 1837 | demangling_t dm; |
| 1838 | { |
| 1839 | DEMANGLE_TRACE ("call-offset", dm); |
| 1840 | |
| 1841 | switch (peek_char (dm)) |
| 1842 | { |
| 1843 | case 'h': |
| 1844 | advance_char (dm); |
| 1845 | /* Demangle the offset. */ |
| 1846 | RETURN_IF_ERROR (demangle_nv_offset (dm)); |
| 1847 | /* Demangle the separator. */ |
| 1848 | RETURN_IF_ERROR (demangle_char (dm, '_')); |
| 1849 | break; |
| 1850 | |
| 1851 | case 'v': |
| 1852 | advance_char (dm); |
| 1853 | /* Demangle the offset. */ |
| 1854 | RETURN_IF_ERROR (demangle_v_offset (dm)); |
| 1855 | /* Demangle the separator. */ |
| 1856 | RETURN_IF_ERROR (demangle_char (dm, '_')); |
| 1857 | break; |
| 1858 | |
| 1859 | default: |
| 1860 | return "Unrecognized <call-offset>."; |
| 1861 | } |
| 1862 | |
| 1863 | return STATUS_OK; |
| 1864 | } |
| 1865 | |
| 1866 | /* Demangles and emits a <special-name>. |
| 1867 | |
| 1868 | <special-name> ::= GV <object name> # Guard variable |
| 1869 | ::= TV <type> # virtual table |
| 1870 | ::= TT <type> # VTT |
| 1871 | ::= TI <type> # typeinfo structure |
| 1872 | ::= TS <type> # typeinfo name |
| 1873 | |
| 1874 | Other relevant productions include thunks: |
| 1875 | |
| 1876 | <special-name> ::= T <call-offset> <base encoding> |
| 1877 | # base is the nominal target function of thunk |
| 1878 | |
| 1879 | <special-name> ::= Tc <call-offset> <call-offset> <base encoding> |
| 1880 | # base is the nominal target function of thunk |
| 1881 | # first call-offset is 'this' adjustment |
| 1882 | # second call-offset is result adjustment |
| 1883 | |
| 1884 | where |
| 1885 | |
| 1886 | <call-offset> ::= h <nv-offset> _ |
| 1887 | ::= v <v-offset> _ |
| 1888 | |
| 1889 | Also demangles the special g++ manglings, |
| 1890 | |
| 1891 | <special-name> ::= TC <type> <offset number> _ <base type> |
| 1892 | # construction vtable |
| 1893 | ::= TF <type> # typeinfo function (old ABI only) |
| 1894 | ::= TJ <type> # java Class structure */ |
| 1895 | |
| 1896 | static status_t |
| 1897 | demangle_special_name (dm) |
| 1898 | demangling_t dm; |
| 1899 | { |
| 1900 | dyn_string_t number; |
| 1901 | int unused; |
| 1902 | char peek = peek_char (dm); |
| 1903 | |
| 1904 | DEMANGLE_TRACE ("special-name", dm); |
| 1905 | |
| 1906 | if (peek == 'G') |
| 1907 | { |
| 1908 | /* Consume the G. */ |
| 1909 | advance_char (dm); |
| 1910 | switch (peek_char (dm)) |
| 1911 | { |
| 1912 | case 'V': |
| 1913 | /* A guard variable name. */ |
| 1914 | advance_char (dm); |
| 1915 | RETURN_IF_ERROR (result_add (dm, "guard variable for ")); |
| 1916 | RETURN_IF_ERROR (demangle_name (dm, &unused)); |
| 1917 | break; |
| 1918 | |
| 1919 | case 'R': |
| 1920 | /* A reference temporary. */ |
| 1921 | advance_char (dm); |
| 1922 | RETURN_IF_ERROR (result_add (dm, "reference temporary for ")); |
| 1923 | RETURN_IF_ERROR (demangle_name (dm, &unused)); |
| 1924 | break; |
| 1925 | |
| 1926 | default: |
| 1927 | return "Unrecognized <special-name>."; |
| 1928 | } |
| 1929 | } |
| 1930 | else if (peek == 'T') |
| 1931 | { |
| 1932 | status_t status = STATUS_OK; |
| 1933 | |
| 1934 | /* Other C++ implementation miscellania. Consume the T. */ |
| 1935 | advance_char (dm); |
| 1936 | |
| 1937 | switch (peek_char (dm)) |
| 1938 | { |
| 1939 | case 'V': |
| 1940 | /* Virtual table. */ |
| 1941 | advance_char (dm); |
| 1942 | RETURN_IF_ERROR (result_add (dm, "vtable for ")); |
| 1943 | RETURN_IF_ERROR (demangle_type (dm)); |
| 1944 | break; |
| 1945 | |
| 1946 | case 'T': |
| 1947 | /* VTT structure. */ |
| 1948 | advance_char (dm); |
| 1949 | RETURN_IF_ERROR (result_add (dm, "VTT for ")); |
| 1950 | RETURN_IF_ERROR (demangle_type (dm)); |
| 1951 | break; |
| 1952 | |
| 1953 | case 'I': |
| 1954 | /* Typeinfo structure. */ |
| 1955 | advance_char (dm); |
| 1956 | RETURN_IF_ERROR (result_add (dm, "typeinfo for ")); |
| 1957 | RETURN_IF_ERROR (demangle_type (dm)); |
| 1958 | break; |
| 1959 | |
| 1960 | case 'F': |
| 1961 | /* Typeinfo function. Used only in old ABI with new mangling. */ |
| 1962 | advance_char (dm); |
| 1963 | RETURN_IF_ERROR (result_add (dm, "typeinfo fn for ")); |
| 1964 | RETURN_IF_ERROR (demangle_type (dm)); |
| 1965 | break; |
| 1966 | |
| 1967 | case 'S': |
| 1968 | /* Character string containing type name, used in typeinfo. */ |
| 1969 | advance_char (dm); |
| 1970 | RETURN_IF_ERROR (result_add (dm, "typeinfo name for ")); |
| 1971 | RETURN_IF_ERROR (demangle_type (dm)); |
| 1972 | break; |
| 1973 | |
| 1974 | case 'J': |
| 1975 | /* The java Class variable corresponding to a C++ class. */ |
| 1976 | advance_char (dm); |
| 1977 | RETURN_IF_ERROR (result_add (dm, "java Class for ")); |
| 1978 | RETURN_IF_ERROR (demangle_type (dm)); |
| 1979 | break; |
| 1980 | |
| 1981 | case 'h': |
| 1982 | /* Non-virtual thunk. */ |
| 1983 | advance_char (dm); |
| 1984 | RETURN_IF_ERROR (result_add (dm, "non-virtual thunk")); |
| 1985 | RETURN_IF_ERROR (demangle_nv_offset (dm)); |
| 1986 | /* Demangle the separator. */ |
| 1987 | RETURN_IF_ERROR (demangle_char (dm, '_')); |
| 1988 | /* Demangle and emit the target name and function type. */ |
| 1989 | RETURN_IF_ERROR (result_add (dm, " to ")); |
| 1990 | RETURN_IF_ERROR (demangle_encoding (dm)); |
| 1991 | break; |
| 1992 | |
| 1993 | case 'v': |
| 1994 | /* Virtual thunk. */ |
| 1995 | advance_char (dm); |
| 1996 | RETURN_IF_ERROR (result_add (dm, "virtual thunk")); |
| 1997 | RETURN_IF_ERROR (demangle_v_offset (dm)); |
| 1998 | /* Demangle the separator. */ |
| 1999 | RETURN_IF_ERROR (demangle_char (dm, '_')); |
| 2000 | /* Demangle and emit the target function. */ |
| 2001 | RETURN_IF_ERROR (result_add (dm, " to ")); |
| 2002 | RETURN_IF_ERROR (demangle_encoding (dm)); |
| 2003 | break; |
| 2004 | |
| 2005 | case 'c': |
| 2006 | /* Covariant return thunk. */ |
| 2007 | advance_char (dm); |
| 2008 | RETURN_IF_ERROR (result_add (dm, "covariant return thunk")); |
| 2009 | RETURN_IF_ERROR (demangle_call_offset (dm)); |
| 2010 | RETURN_IF_ERROR (demangle_call_offset (dm)); |
| 2011 | /* Demangle and emit the target function. */ |
| 2012 | RETURN_IF_ERROR (result_add (dm, " to ")); |
| 2013 | RETURN_IF_ERROR (demangle_encoding (dm)); |
| 2014 | break; |
| 2015 | |
| 2016 | case 'C': |
| 2017 | /* TC is a special g++ mangling for a construction vtable. */ |
| 2018 | if (!flag_strict) |
| 2019 | { |
| 2020 | dyn_string_t derived_type; |
| 2021 | |
| 2022 | advance_char (dm); |
| 2023 | RETURN_IF_ERROR (result_add (dm, "construction vtable for ")); |
| 2024 | |
| 2025 | /* Demangle the derived type off to the side. */ |
| 2026 | RETURN_IF_ERROR (result_push (dm)); |
| 2027 | RETURN_IF_ERROR (demangle_type (dm)); |
| 2028 | derived_type = (dyn_string_t) result_pop (dm); |
| 2029 | |
| 2030 | /* Demangle the offset. */ |
| 2031 | number = dyn_string_new (4); |
| 2032 | if (number == NULL) |
| 2033 | { |
| 2034 | dyn_string_delete (derived_type); |
| 2035 | return STATUS_ALLOCATION_FAILED; |
| 2036 | } |
| 2037 | demangle_number_literally (dm, number, 10, 1); |
| 2038 | /* Demangle the underscore separator. */ |
| 2039 | status = demangle_char (dm, '_'); |
| 2040 | |
| 2041 | /* Demangle the base type. */ |
| 2042 | if (STATUS_NO_ERROR (status)) |
| 2043 | status = demangle_type (dm); |
| 2044 | |
| 2045 | /* Emit the derived type. */ |
| 2046 | if (STATUS_NO_ERROR (status)) |
| 2047 | status = result_add (dm, "-in-"); |
| 2048 | if (STATUS_NO_ERROR (status)) |
| 2049 | status = result_add_string (dm, derived_type); |
| 2050 | dyn_string_delete (derived_type); |
| 2051 | |
| 2052 | /* Don't display the offset unless in verbose mode. */ |
| 2053 | if (flag_verbose) |
| 2054 | { |
| 2055 | status = result_add_char (dm, ' '); |
| 2056 | if (STATUS_NO_ERROR (status)) |
| 2057 | result_add_string (dm, number); |
| 2058 | } |
| 2059 | dyn_string_delete (number); |
| 2060 | RETURN_IF_ERROR (status); |
| 2061 | break; |
| 2062 | } |
| 2063 | /* If flag_strict, fall through. */ |
| 2064 | |
| 2065 | default: |
| 2066 | return "Unrecognized <special-name>."; |
| 2067 | } |
| 2068 | } |
| 2069 | else |
| 2070 | return STATUS_ERROR; |
| 2071 | |
| 2072 | return STATUS_OK; |
| 2073 | } |
| 2074 | |
| 2075 | /* Demangles and emits a <ctor-dtor-name>. |
| 2076 | |
| 2077 | <ctor-dtor-name> |
| 2078 | ::= C1 # complete object (in-charge) ctor |
| 2079 | ::= C2 # base object (not-in-charge) ctor |
| 2080 | ::= C3 # complete object (in-charge) allocating ctor |
| 2081 | ::= D0 # deleting (in-charge) dtor |
| 2082 | ::= D1 # complete object (in-charge) dtor |
| 2083 | ::= D2 # base object (not-in-charge) dtor */ |
| 2084 | |
| 2085 | static status_t |
| 2086 | demangle_ctor_dtor_name (dm) |
| 2087 | demangling_t dm; |
| 2088 | { |
| 2089 | static const char *const ctor_flavors[] = |
| 2090 | { |
| 2091 | "in-charge", |
| 2092 | "not-in-charge", |
| 2093 | "allocating" |
| 2094 | }; |
| 2095 | static const char *const dtor_flavors[] = |
| 2096 | { |
| 2097 | "in-charge deleting", |
| 2098 | "in-charge", |
| 2099 | "not-in-charge" |
| 2100 | }; |
| 2101 | |
| 2102 | int flavor; |
| 2103 | char peek = peek_char (dm); |
| 2104 | |
| 2105 | DEMANGLE_TRACE ("ctor-dtor-name", dm); |
| 2106 | |
| 2107 | if (peek == 'C') |
| 2108 | { |
| 2109 | /* A constructor name. Consume the C. */ |
| 2110 | advance_char (dm); |
| 2111 | flavor = next_char (dm); |
| 2112 | if (flavor < '1' || flavor > '3') |
| 2113 | return "Unrecognized constructor."; |
| 2114 | RETURN_IF_ERROR (result_add_string (dm, dm->last_source_name)); |
| 2115 | switch (flavor) |
| 2116 | { |
| 2117 | case '1': dm->is_constructor = gnu_v3_complete_object_ctor; |
| 2118 | break; |
| 2119 | case '2': dm->is_constructor = gnu_v3_base_object_ctor; |
| 2120 | break; |
| 2121 | case '3': dm->is_constructor = gnu_v3_complete_object_allocating_ctor; |
| 2122 | break; |
| 2123 | } |
| 2124 | /* Print the flavor of the constructor if in verbose mode. */ |
| 2125 | if (flag_verbose) |
| 2126 | { |
| 2127 | RETURN_IF_ERROR (result_add (dm, "[")); |
| 2128 | RETURN_IF_ERROR (result_add (dm, ctor_flavors[flavor - '1'])); |
| 2129 | RETURN_IF_ERROR (result_add_char (dm, ']')); |
| 2130 | } |
| 2131 | } |
| 2132 | else if (peek == 'D') |
| 2133 | { |
| 2134 | /* A destructor name. Consume the D. */ |
| 2135 | advance_char (dm); |
| 2136 | flavor = next_char (dm); |
| 2137 | if (flavor < '0' || flavor > '2') |
| 2138 | return "Unrecognized destructor."; |
| 2139 | RETURN_IF_ERROR (result_add_char (dm, '~')); |
| 2140 | RETURN_IF_ERROR (result_add_string (dm, dm->last_source_name)); |
| 2141 | switch (flavor) |
| 2142 | { |
| 2143 | case '0': dm->is_destructor = gnu_v3_deleting_dtor; |
| 2144 | break; |
| 2145 | case '1': dm->is_destructor = gnu_v3_complete_object_dtor; |
| 2146 | break; |
| 2147 | case '2': dm->is_destructor = gnu_v3_base_object_dtor; |
| 2148 | break; |
| 2149 | } |
| 2150 | /* Print the flavor of the destructor if in verbose mode. */ |
| 2151 | if (flag_verbose) |
| 2152 | { |
| 2153 | RETURN_IF_ERROR (result_add (dm, " [")); |
| 2154 | RETURN_IF_ERROR (result_add (dm, dtor_flavors[flavor - '0'])); |
| 2155 | RETURN_IF_ERROR (result_add_char (dm, ']')); |
| 2156 | } |
| 2157 | } |
| 2158 | else |
| 2159 | return STATUS_ERROR; |
| 2160 | |
| 2161 | return STATUS_OK; |
| 2162 | } |
| 2163 | |
| 2164 | /* Handle pointer, reference, and pointer-to-member cases for |
| 2165 | demangle_type. All consecutive `P's, `R's, and 'M's are joined to |
| 2166 | build a pointer/reference type. We snarf all these, plus the |
| 2167 | following <type>, all at once since we need to know whether we have |
| 2168 | a pointer to data or pointer to function to construct the right |
| 2169 | output syntax. C++'s pointer syntax is hairy. |
| 2170 | |
| 2171 | This function adds substitution candidates for every nested |
| 2172 | pointer/reference type it processes, including the outermost, final |
| 2173 | type, assuming the substitution starts at SUBSTITUTION_START in the |
| 2174 | demangling result. For example, if this function demangles |
| 2175 | `PP3Foo', it will add a substitution for `Foo', `Foo*', and |
| 2176 | `Foo**', in that order. |
| 2177 | |
| 2178 | *INSERT_POS is a quantity used internally, when this function calls |
| 2179 | itself recursively, to figure out where to insert pointer |
| 2180 | punctuation on the way up. On entry to this function, INSERT_POS |
| 2181 | should point to a temporary value, but that value need not be |
| 2182 | initialized. |
| 2183 | |
| 2184 | <type> ::= P <type> |
| 2185 | ::= R <type> |
| 2186 | ::= <pointer-to-member-type> |
| 2187 | |
| 2188 | <pointer-to-member-type> ::= M </class/ type> </member/ type> */ |
| 2189 | |
| 2190 | static status_t |
| 2191 | demangle_type_ptr (dm, insert_pos, substitution_start) |
| 2192 | demangling_t dm; |
| 2193 | int *insert_pos; |
| 2194 | int substitution_start; |
| 2195 | { |
| 2196 | status_t status; |
| 2197 | int is_substitution_candidate = 1; |
| 2198 | |
| 2199 | DEMANGLE_TRACE ("type*", dm); |
| 2200 | |
| 2201 | /* Scan forward, collecting pointers and references into symbols, |
| 2202 | until we hit something else. Then emit the type. */ |
| 2203 | switch (peek_char (dm)) |
| 2204 | { |
| 2205 | case 'P': |
| 2206 | /* A pointer. Snarf the `P'. */ |
| 2207 | advance_char (dm); |
| 2208 | /* Demangle the underlying type. */ |
| 2209 | RETURN_IF_ERROR (demangle_type_ptr (dm, insert_pos, |
| 2210 | substitution_start)); |
| 2211 | /* Insert an asterisk where we're told to; it doesn't |
| 2212 | necessarily go at the end. If we're doing Java style output, |
| 2213 | there is no pointer symbol. */ |
| 2214 | if (dm->style != DMGL_JAVA) |
| 2215 | RETURN_IF_ERROR (result_insert_char (dm, *insert_pos, '*')); |
| 2216 | /* The next (outermost) pointer or reference character should go |
| 2217 | after this one. */ |
| 2218 | ++(*insert_pos); |
| 2219 | break; |
| 2220 | |
| 2221 | case 'R': |
| 2222 | /* A reference. Snarf the `R'. */ |
| 2223 | advance_char (dm); |
| 2224 | /* Demangle the underlying type. */ |
| 2225 | RETURN_IF_ERROR (demangle_type_ptr (dm, insert_pos, |
| 2226 | substitution_start)); |
| 2227 | /* Insert an ampersand where we're told to; it doesn't |
| 2228 | necessarily go at the end. */ |
| 2229 | RETURN_IF_ERROR (result_insert_char (dm, *insert_pos, '&')); |
| 2230 | /* The next (outermost) pointer or reference character should go |
| 2231 | after this one. */ |
| 2232 | ++(*insert_pos); |
| 2233 | break; |
| 2234 | |
| 2235 | case 'M': |
| 2236 | { |
| 2237 | /* A pointer-to-member. */ |
| 2238 | dyn_string_t class_type; |
| 2239 | |
| 2240 | /* Eat the 'M'. */ |
| 2241 | advance_char (dm); |
| 2242 | |
| 2243 | /* Capture the type of which this is a pointer-to-member. */ |
| 2244 | RETURN_IF_ERROR (result_push (dm)); |
| 2245 | RETURN_IF_ERROR (demangle_type (dm)); |
| 2246 | class_type = (dyn_string_t) result_pop (dm); |
| 2247 | |
| 2248 | if (peek_char (dm) == 'F') |
| 2249 | /* A pointer-to-member function. We want output along the |
| 2250 | lines of `void (C::*) (int, int)'. Demangle the function |
| 2251 | type, which would in this case give `void () (int, int)' |
| 2252 | and set *insert_pos to the spot between the first |
| 2253 | parentheses. */ |
| 2254 | status = demangle_type_ptr (dm, insert_pos, substitution_start); |
| 2255 | else if (peek_char (dm) == 'A') |
| 2256 | /* A pointer-to-member array variable. We want output that |
| 2257 | looks like `int (Klass::*) [10]'. Demangle the array type |
| 2258 | as `int () [10]', and set *insert_pos to the spot between |
| 2259 | the parentheses. */ |
| 2260 | status = demangle_array_type (dm, insert_pos); |
| 2261 | else |
| 2262 | { |
| 2263 | /* A pointer-to-member variable. Demangle the type of the |
| 2264 | pointed-to member. */ |
| 2265 | status = demangle_type (dm); |
| 2266 | /* Make it pretty. */ |
| 2267 | if (STATUS_NO_ERROR (status) |
| 2268 | && !result_previous_char_is_space (dm)) |
| 2269 | status = result_add_char (dm, ' '); |
| 2270 | /* The pointer-to-member notation (e.g. `C::*') follows the |
| 2271 | member's type. */ |
| 2272 | *insert_pos = result_caret_pos (dm); |
| 2273 | } |
| 2274 | |
| 2275 | /* Build the pointer-to-member notation. */ |
| 2276 | if (STATUS_NO_ERROR (status)) |
| 2277 | status = result_insert (dm, *insert_pos, "::*"); |
| 2278 | if (STATUS_NO_ERROR (status)) |
| 2279 | status = result_insert_string (dm, *insert_pos, class_type); |
| 2280 | /* There may be additional levels of (pointer or reference) |
| 2281 | indirection in this type. If so, the `*' and `&' should be |
| 2282 | added after the pointer-to-member notation (e.g. `C::*&' for |
| 2283 | a reference to a pointer-to-member of class C). */ |
| 2284 | *insert_pos += dyn_string_length (class_type) + 3; |
| 2285 | |
| 2286 | /* Clean up. */ |
| 2287 | dyn_string_delete (class_type); |
| 2288 | |
| 2289 | RETURN_IF_ERROR (status); |
| 2290 | } |
| 2291 | break; |
| 2292 | |
| 2293 | case 'F': |
| 2294 | /* Ooh, tricky, a pointer-to-function. When we demangle the |
| 2295 | function type, the return type should go at the very |
| 2296 | beginning. */ |
| 2297 | *insert_pos = result_caret_pos (dm); |
| 2298 | /* The parentheses indicate this is a function pointer or |
| 2299 | reference type. */ |
| 2300 | RETURN_IF_ERROR (result_add (dm, "()")); |
| 2301 | /* Now demangle the function type. The return type will be |
| 2302 | inserted before the `()', and the argument list will go after |
| 2303 | it. */ |
| 2304 | RETURN_IF_ERROR (demangle_function_type (dm, insert_pos)); |
| 2305 | /* We should now have something along the lines of |
| 2306 | `void () (int, int)'. The pointer or reference characters |
| 2307 | have to inside the first set of parentheses. *insert_pos has |
| 2308 | already been updated to point past the end of the return |
| 2309 | type. Move it one character over so it points inside the |
| 2310 | `()'. */ |
| 2311 | ++(*insert_pos); |
| 2312 | break; |
| 2313 | |
| 2314 | case 'A': |
| 2315 | /* An array pointer or reference. demangle_array_type will figure |
| 2316 | out where the asterisks and ampersands go. */ |
| 2317 | RETURN_IF_ERROR (demangle_array_type (dm, insert_pos)); |
| 2318 | break; |
| 2319 | |
| 2320 | default: |
| 2321 | /* No more pointer or reference tokens; this is therefore a |
| 2322 | pointer to data. Finish up by demangling the underlying |
| 2323 | type. */ |
| 2324 | RETURN_IF_ERROR (demangle_type (dm)); |
| 2325 | /* The pointer or reference characters follow the underlying |
| 2326 | type, as in `int*&'. */ |
| 2327 | *insert_pos = result_caret_pos (dm); |
| 2328 | /* Because of the production <type> ::= <substitution>, |
| 2329 | demangle_type will already have added the underlying type as |
| 2330 | a substitution candidate. Don't do it again. */ |
| 2331 | is_substitution_candidate = 0; |
| 2332 | break; |
| 2333 | } |
| 2334 | |
| 2335 | if (is_substitution_candidate) |
| 2336 | RETURN_IF_ERROR (substitution_add (dm, substitution_start, 0)); |
| 2337 | |
| 2338 | return STATUS_OK; |
| 2339 | } |
| 2340 | |
| 2341 | /* Demangles and emits a <type>. |
| 2342 | |
| 2343 | <type> ::= <builtin-type> |
| 2344 | ::= <function-type> |
| 2345 | ::= <class-enum-type> |
| 2346 | ::= <array-type> |
| 2347 | ::= <pointer-to-member-type> |
| 2348 | ::= <template-param> |
| 2349 | ::= <template-template-param> <template-args> |
| 2350 | ::= <CV-qualifiers> <type> |
| 2351 | ::= P <type> # pointer-to |
| 2352 | ::= R <type> # reference-to |
| 2353 | ::= C <type> # complex pair (C 2000) |
| 2354 | ::= G <type> # imaginary (C 2000) |
| 2355 | ::= U <source-name> <type> # vendor extended type qualifier |
| 2356 | ::= <substitution> */ |
| 2357 | |
| 2358 | static status_t |
| 2359 | demangle_type (dm) |
| 2360 | demangling_t dm; |
| 2361 | { |
| 2362 | int start = substitution_start (dm); |
| 2363 | char peek = peek_char (dm); |
| 2364 | char peek_next; |
| 2365 | int encode_return_type = 0; |
| 2366 | template_arg_list_t old_arg_list = current_template_arg_list (dm); |
| 2367 | int insert_pos; |
| 2368 | |
| 2369 | /* A <type> can be a <substitution>; therefore, this <type> is a |
| 2370 | substitution candidate unless a special condition holds (see |
| 2371 | below). */ |
| 2372 | int is_substitution_candidate = 1; |
| 2373 | |
| 2374 | DEMANGLE_TRACE ("type", dm); |
| 2375 | |
| 2376 | /* A <class-enum-type> can start with a digit (a <source-name>), an |
| 2377 | N (a <nested-name>), or a Z (a <local-name>). */ |
| 2378 | if (IS_DIGIT ((unsigned char) peek) || peek == 'N' || peek == 'Z') |
| 2379 | RETURN_IF_ERROR (demangle_class_enum_type (dm, &encode_return_type)); |
| 2380 | /* Lower-case letters begin <builtin-type>s, except for `r', which |
| 2381 | denotes restrict. */ |
| 2382 | else if (peek >= 'a' && peek <= 'z' && peek != 'r') |
| 2383 | { |
| 2384 | RETURN_IF_ERROR (demangle_builtin_type (dm)); |
| 2385 | /* Built-in types are not substitution candidates. */ |
| 2386 | is_substitution_candidate = 0; |
| 2387 | } |
| 2388 | else |
| 2389 | switch (peek) |
| 2390 | { |
| 2391 | case 'r': |
| 2392 | case 'V': |
| 2393 | case 'K': |
| 2394 | /* CV-qualifiers (including restrict). We have to demangle |
| 2395 | them off to the side, since C++ syntax puts them in a funny |
| 2396 | place for qualified pointer and reference types. */ |
| 2397 | { |
| 2398 | status_t status; |
| 2399 | dyn_string_t cv_qualifiers = dyn_string_new (24); |
| 2400 | int old_caret_position = result_get_caret (dm); |
| 2401 | |
| 2402 | if (cv_qualifiers == NULL) |
| 2403 | return STATUS_ALLOCATION_FAILED; |
| 2404 | |
| 2405 | /* Decode all adjacent CV qualifiers. */ |
| 2406 | demangle_CV_qualifiers (dm, cv_qualifiers); |
| 2407 | /* Emit them, and shift the caret left so that the |
| 2408 | underlying type will be emitted before the qualifiers. */ |
| 2409 | status = result_add_string (dm, cv_qualifiers); |
| 2410 | result_shift_caret (dm, -dyn_string_length (cv_qualifiers)); |
| 2411 | /* Clean up. */ |
| 2412 | dyn_string_delete (cv_qualifiers); |
| 2413 | RETURN_IF_ERROR (status); |
| 2414 | /* Also prepend a blank, if needed. */ |
| 2415 | RETURN_IF_ERROR (result_add_char (dm, ' ')); |
| 2416 | result_shift_caret (dm, -1); |
| 2417 | |
| 2418 | /* Demangle the underlying type. It will be emitted before |
| 2419 | the CV qualifiers, since we moved the caret. */ |
| 2420 | RETURN_IF_ERROR (demangle_type (dm)); |
| 2421 | |
| 2422 | /* Put the caret back where it was previously. */ |
| 2423 | result_set_caret (dm, old_caret_position); |
| 2424 | } |
| 2425 | break; |
| 2426 | |
| 2427 | case 'F': |
| 2428 | return "Non-pointer or -reference function type."; |
| 2429 | |
| 2430 | case 'A': |
| 2431 | RETURN_IF_ERROR (demangle_array_type (dm, NULL)); |
| 2432 | break; |
| 2433 | |
| 2434 | case 'T': |
| 2435 | /* It's either a <template-param> or a |
| 2436 | <template-template-param>. In either case, demangle the |
| 2437 | `T' token first. */ |
| 2438 | RETURN_IF_ERROR (demangle_template_param (dm)); |
| 2439 | |
| 2440 | /* Check for a template argument list; if one is found, it's a |
| 2441 | <template-template-param> ::= <template-param> |
| 2442 | ::= <substitution> */ |
| 2443 | if (peek_char (dm) == 'I') |
| 2444 | { |
| 2445 | /* Add a substitution candidate. The template parameter |
| 2446 | `T' token is a substitution candidate by itself, |
| 2447 | without the template argument list. */ |
| 2448 | RETURN_IF_ERROR (substitution_add (dm, start, encode_return_type)); |
| 2449 | |
| 2450 | /* Now demangle the template argument list. */ |
| 2451 | RETURN_IF_ERROR (demangle_template_args (dm)); |
| 2452 | /* The entire type, including the template template |
| 2453 | parameter and its argument list, will be added as a |
| 2454 | substitution candidate below. */ |
| 2455 | } |
| 2456 | |
| 2457 | break; |
| 2458 | |
| 2459 | case 'S': |
| 2460 | /* First check if this is a special substitution. If it is, |
| 2461 | this is a <class-enum-type>. Special substitutions have a |
| 2462 | letter following the `S'; other substitutions have a digit |
| 2463 | or underscore. */ |
| 2464 | peek_next = peek_char_next (dm); |
| 2465 | if (IS_DIGIT (peek_next) || peek_next == '_') |
| 2466 | { |
| 2467 | RETURN_IF_ERROR (demangle_substitution (dm, &encode_return_type)); |
| 2468 | |
| 2469 | /* The substituted name may have been a template name. |
| 2470 | Check if template arguments follow, and if so, demangle |
| 2471 | them. */ |
| 2472 | if (peek_char (dm) == 'I') |
| 2473 | RETURN_IF_ERROR (demangle_template_args (dm)); |
| 2474 | else |
| 2475 | /* A substitution token is not itself a substitution |
| 2476 | candidate. (However, if the substituted template is |
| 2477 | instantiated, the resulting type is.) */ |
| 2478 | is_substitution_candidate = 0; |
| 2479 | } |
| 2480 | else |
| 2481 | { |
| 2482 | /* Now some trickiness. We have a special substitution |
| 2483 | here. Often, the special substitution provides the |
| 2484 | name of a template that's subsequently instantiated, |
| 2485 | for instance `SaIcE' => std::allocator<char>. In these |
| 2486 | cases we need to add a substitution candidate for the |
| 2487 | entire <class-enum-type> and thus don't want to clear |
| 2488 | the is_substitution_candidate flag. |
| 2489 | |
| 2490 | However, it's possible that what we have here is a |
| 2491 | substitution token representing an entire type, such as |
| 2492 | `Ss' => std::string. In this case, we mustn't add a |
| 2493 | new substitution candidate for this substitution token. |
| 2494 | To detect this case, remember where the start of the |
| 2495 | substitution token is. */ |
| 2496 | const char *next = dm->next; |
| 2497 | /* Now demangle the <class-enum-type>. */ |
| 2498 | RETURN_IF_ERROR |
| 2499 | (demangle_class_enum_type (dm, &encode_return_type)); |
| 2500 | /* If all that was just demangled is the two-character |
| 2501 | special substitution token, supress the addition of a |
| 2502 | new candidate for it. */ |
| 2503 | if (dm->next == next + 2) |
| 2504 | is_substitution_candidate = 0; |
| 2505 | } |
| 2506 | |
| 2507 | break; |
| 2508 | |
| 2509 | case 'P': |
| 2510 | case 'R': |
| 2511 | case 'M': |
| 2512 | RETURN_IF_ERROR (demangle_type_ptr (dm, &insert_pos, start)); |
| 2513 | /* demangle_type_ptr adds all applicable substitution |
| 2514 | candidates. */ |
| 2515 | is_substitution_candidate = 0; |
| 2516 | break; |
| 2517 | |
| 2518 | case 'C': |
| 2519 | /* A C99 complex type. */ |
| 2520 | RETURN_IF_ERROR (result_add (dm, "complex ")); |
| 2521 | advance_char (dm); |
| 2522 | RETURN_IF_ERROR (demangle_type (dm)); |
| 2523 | break; |
| 2524 | |
| 2525 | case 'G': |
| 2526 | /* A C99 imaginary type. */ |
| 2527 | RETURN_IF_ERROR (result_add (dm, "imaginary ")); |
| 2528 | advance_char (dm); |
| 2529 | RETURN_IF_ERROR (demangle_type (dm)); |
| 2530 | break; |
| 2531 | |
| 2532 | case 'U': |
| 2533 | /* Vendor-extended type qualifier. */ |
| 2534 | advance_char (dm); |
| 2535 | RETURN_IF_ERROR (demangle_source_name (dm)); |
| 2536 | RETURN_IF_ERROR (result_add_char (dm, ' ')); |
| 2537 | RETURN_IF_ERROR (demangle_type (dm)); |
| 2538 | break; |
| 2539 | |
| 2540 | default: |
| 2541 | return "Unexpected character in <type>."; |
| 2542 | } |
| 2543 | |
| 2544 | if (is_substitution_candidate) |
| 2545 | /* Add a new substitution for the type. If this type was a |
| 2546 | <template-param>, pass its index since from the point of |
| 2547 | substitutions; a <template-param> token is a substitution |
| 2548 | candidate distinct from the type that is substituted for it. */ |
| 2549 | RETURN_IF_ERROR (substitution_add (dm, start, encode_return_type)); |
| 2550 | |
| 2551 | /* Pop off template argument lists added during mangling of this |
| 2552 | type. */ |
| 2553 | pop_to_template_arg_list (dm, old_arg_list); |
| 2554 | |
| 2555 | return STATUS_OK; |
| 2556 | } |
| 2557 | |
| 2558 | /* C++ source names of builtin types, indexed by the mangled code |
| 2559 | letter's position in the alphabet ('a' -> 0, 'b' -> 1, etc). */ |
| 2560 | static const char *const builtin_type_names[26] = |
| 2561 | { |
| 2562 | "signed char", /* a */ |
| 2563 | "bool", /* b */ |
| 2564 | "char", /* c */ |
| 2565 | "double", /* d */ |
| 2566 | "long double", /* e */ |
| 2567 | "float", /* f */ |
| 2568 | "__float128", /* g */ |
| 2569 | "unsigned char", /* h */ |
| 2570 | "int", /* i */ |
| 2571 | "unsigned", /* j */ |
| 2572 | NULL, /* k */ |
| 2573 | "long", /* l */ |
| 2574 | "unsigned long", /* m */ |
| 2575 | "__int128", /* n */ |
| 2576 | "unsigned __int128", /* o */ |
| 2577 | NULL, /* p */ |
| 2578 | NULL, /* q */ |
| 2579 | NULL, /* r */ |
| 2580 | "short", /* s */ |
| 2581 | "unsigned short", /* t */ |
| 2582 | NULL, /* u */ |
| 2583 | "void", /* v */ |
| 2584 | "wchar_t", /* w */ |
| 2585 | "long long", /* x */ |
| 2586 | "unsigned long long", /* y */ |
| 2587 | "..." /* z */ |
| 2588 | }; |
| 2589 | |
| 2590 | /* Java source names of builtin types. Types that arn't valid in Java |
| 2591 | are also included here - we don't fail if someone attempts to demangle a |
| 2592 | C++ symbol in Java style. */ |
| 2593 | static const char *const java_builtin_type_names[26] = |
| 2594 | { |
| 2595 | "signed char", /* a */ |
| 2596 | "boolean", /* C++ "bool" */ /* b */ |
| 2597 | "byte", /* C++ "char" */ /* c */ |
| 2598 | "double", /* d */ |
| 2599 | "long double", /* e */ |
| 2600 | "float", /* f */ |
| 2601 | "__float128", /* g */ |
| 2602 | "unsigned char", /* h */ |
| 2603 | "int", /* i */ |
| 2604 | "unsigned", /* j */ |
| 2605 | NULL, /* k */ |
| 2606 | "long", /* l */ |
| 2607 | "unsigned long", /* m */ |
| 2608 | "__int128", /* n */ |
| 2609 | "unsigned __int128", /* o */ |
| 2610 | NULL, /* p */ |
| 2611 | NULL, /* q */ |
| 2612 | NULL, /* r */ |
| 2613 | "short", /* s */ |
| 2614 | "unsigned short", /* t */ |
| 2615 | NULL, /* u */ |
| 2616 | "void", /* v */ |
| 2617 | "char", /* C++ "wchar_t" */ /* w */ |
| 2618 | "long", /* C++ "long long" */ /* x */ |
| 2619 | "unsigned long long", /* y */ |
| 2620 | "..." /* z */ |
| 2621 | }; |
| 2622 | |
| 2623 | /* Demangles and emits a <builtin-type>. |
| 2624 | |
| 2625 | <builtin-type> ::= v # void |
| 2626 | ::= w # wchar_t |
| 2627 | ::= b # bool |
| 2628 | ::= c # char |
| 2629 | ::= a # signed char |
| 2630 | ::= h # unsigned char |
| 2631 | ::= s # short |
| 2632 | ::= t # unsigned short |
| 2633 | ::= i # int |
| 2634 | ::= j # unsigned int |
| 2635 | ::= l # long |
| 2636 | ::= m # unsigned long |
| 2637 | ::= x # long long, __int64 |
| 2638 | ::= y # unsigned long long, __int64 |
| 2639 | ::= n # __int128 |
| 2640 | ::= o # unsigned __int128 |
| 2641 | ::= f # float |
| 2642 | ::= d # double |
| 2643 | ::= e # long double, __float80 |
| 2644 | ::= g # __float128 |
| 2645 | ::= z # ellipsis |
| 2646 | ::= u <source-name> # vendor extended type */ |
| 2647 | |
| 2648 | static status_t |
| 2649 | demangle_builtin_type (dm) |
| 2650 | demangling_t dm; |
| 2651 | { |
| 2652 | |
| 2653 | char code = peek_char (dm); |
| 2654 | |
| 2655 | DEMANGLE_TRACE ("builtin-type", dm); |
| 2656 | |
| 2657 | if (code == 'u') |
| 2658 | { |
| 2659 | advance_char (dm); |
| 2660 | RETURN_IF_ERROR (demangle_source_name (dm)); |
| 2661 | return STATUS_OK; |
| 2662 | } |
| 2663 | else if (code >= 'a' && code <= 'z') |
| 2664 | { |
| 2665 | const char *type_name; |
| 2666 | /* Java uses different names for some built-in types. */ |
| 2667 | if (dm->style == DMGL_JAVA) |
| 2668 | type_name = java_builtin_type_names[code - 'a']; |
| 2669 | else |
| 2670 | type_name = builtin_type_names[code - 'a']; |
| 2671 | if (type_name == NULL) |
| 2672 | return "Unrecognized <builtin-type> code."; |
| 2673 | |
| 2674 | RETURN_IF_ERROR (result_add (dm, type_name)); |
| 2675 | advance_char (dm); |
| 2676 | return STATUS_OK; |
| 2677 | } |
| 2678 | else |
| 2679 | return "Non-alphabetic <builtin-type> code."; |
| 2680 | } |
| 2681 | |
| 2682 | /* Demangles all consecutive CV-qualifiers (const, volatile, and |
| 2683 | restrict) at the current position. The qualifiers are appended to |
| 2684 | QUALIFIERS. Returns STATUS_OK. */ |
| 2685 | |
| 2686 | static status_t |
| 2687 | demangle_CV_qualifiers (dm, qualifiers) |
| 2688 | demangling_t dm; |
| 2689 | dyn_string_t qualifiers; |
| 2690 | { |
| 2691 | DEMANGLE_TRACE ("CV-qualifiers", dm); |
| 2692 | |
| 2693 | while (1) |
| 2694 | { |
| 2695 | switch (peek_char (dm)) |
| 2696 | { |
| 2697 | case 'r': |
| 2698 | if (!dyn_string_append_space (qualifiers)) |
| 2699 | return STATUS_ALLOCATION_FAILED; |
| 2700 | if (!dyn_string_append_cstr (qualifiers, "restrict")) |
| 2701 | return STATUS_ALLOCATION_FAILED; |
| 2702 | break; |
| 2703 | |
| 2704 | case 'V': |
| 2705 | if (!dyn_string_append_space (qualifiers)) |
| 2706 | return STATUS_ALLOCATION_FAILED; |
| 2707 | if (!dyn_string_append_cstr (qualifiers, "volatile")) |
| 2708 | return STATUS_ALLOCATION_FAILED; |
| 2709 | break; |
| 2710 | |
| 2711 | case 'K': |
| 2712 | if (!dyn_string_append_space (qualifiers)) |
| 2713 | return STATUS_ALLOCATION_FAILED; |
| 2714 | if (!dyn_string_append_cstr (qualifiers, "const")) |
| 2715 | return STATUS_ALLOCATION_FAILED; |
| 2716 | break; |
| 2717 | |
| 2718 | default: |
| 2719 | return STATUS_OK; |
| 2720 | } |
| 2721 | |
| 2722 | advance_char (dm); |
| 2723 | } |
| 2724 | } |
| 2725 | |
| 2726 | /* Demangles and emits a <function-type>. *FUNCTION_NAME_POS is the |
| 2727 | position in the result string of the start of the function |
| 2728 | identifier, at which the function's return type will be inserted; |
| 2729 | *FUNCTION_NAME_POS is updated to position past the end of the |
| 2730 | function's return type. |
| 2731 | |
| 2732 | <function-type> ::= F [Y] <bare-function-type> E */ |
| 2733 | |
| 2734 | static status_t |
| 2735 | demangle_function_type (dm, function_name_pos) |
| 2736 | demangling_t dm; |
| 2737 | int *function_name_pos; |
| 2738 | { |
| 2739 | DEMANGLE_TRACE ("function-type", dm); |
| 2740 | RETURN_IF_ERROR (demangle_char (dm, 'F')); |
| 2741 | if (peek_char (dm) == 'Y') |
| 2742 | { |
| 2743 | /* Indicate this function has C linkage if in verbose mode. */ |
| 2744 | if (flag_verbose) |
| 2745 | RETURN_IF_ERROR (result_add (dm, " [extern \"C\"] ")); |
| 2746 | advance_char (dm); |
| 2747 | } |
| 2748 | RETURN_IF_ERROR (demangle_bare_function_type (dm, function_name_pos)); |
| 2749 | RETURN_IF_ERROR (demangle_char (dm, 'E')); |
| 2750 | return STATUS_OK; |
| 2751 | } |
| 2752 | |
| 2753 | /* Demangles and emits a <bare-function-type>. RETURN_TYPE_POS is the |
| 2754 | position in the result string at which the function return type |
| 2755 | should be inserted. If RETURN_TYPE_POS is BFT_NO_RETURN_TYPE, the |
| 2756 | function's return type is assumed not to be encoded. |
| 2757 | |
| 2758 | <bare-function-type> ::= <signature type>+ */ |
| 2759 | |
| 2760 | static status_t |
| 2761 | demangle_bare_function_type (dm, return_type_pos) |
| 2762 | demangling_t dm; |
| 2763 | int *return_type_pos; |
| 2764 | { |
| 2765 | /* Sequence is the index of the current function parameter, counting |
| 2766 | from zero. The value -1 denotes the return type. */ |
| 2767 | int sequence = |
| 2768 | (return_type_pos == BFT_NO_RETURN_TYPE ? 0 : -1); |
| 2769 | |
| 2770 | DEMANGLE_TRACE ("bare-function-type", dm); |
| 2771 | |
| 2772 | RETURN_IF_ERROR (result_add_char (dm, '(')); |
| 2773 | while (!end_of_name_p (dm) && peek_char (dm) != 'E') |
| 2774 | { |
| 2775 | if (sequence == -1) |
| 2776 | /* We're decoding the function's return type. */ |
| 2777 | { |
| 2778 | dyn_string_t return_type; |
| 2779 | status_t status = STATUS_OK; |
| 2780 | |
| 2781 | /* Decode the return type off to the side. */ |
| 2782 | RETURN_IF_ERROR (result_push (dm)); |
| 2783 | RETURN_IF_ERROR (demangle_type (dm)); |
| 2784 | return_type = (dyn_string_t) result_pop (dm); |
| 2785 | |
| 2786 | /* Add a space to the end of the type. Insert the return |
| 2787 | type where we've been asked to. */ |
| 2788 | if (!dyn_string_append_space (return_type)) |
| 2789 | status = STATUS_ALLOCATION_FAILED; |
| 2790 | if (STATUS_NO_ERROR (status)) |
| 2791 | { |
| 2792 | if (!dyn_string_insert (result_string (dm), *return_type_pos, |
| 2793 | return_type)) |
| 2794 | status = STATUS_ALLOCATION_FAILED; |
| 2795 | else |
| 2796 | *return_type_pos += dyn_string_length (return_type); |
| 2797 | } |
| 2798 | |
| 2799 | dyn_string_delete (return_type); |
| 2800 | RETURN_IF_ERROR (status); |
| 2801 | } |
| 2802 | else |
| 2803 | { |
| 2804 | /* Skip `void' parameter types. One should only occur as |
| 2805 | the only type in a parameter list; in that case, we want |
| 2806 | to print `foo ()' instead of `foo (void)'. */ |
| 2807 | if (peek_char (dm) == 'v') |
| 2808 | /* Consume the v. */ |
| 2809 | advance_char (dm); |
| 2810 | else |
| 2811 | { |
| 2812 | /* Separate parameter types by commas. */ |
| 2813 | if (sequence > 0) |
| 2814 | RETURN_IF_ERROR (result_add (dm, ", ")); |
| 2815 | /* Demangle the type. */ |
| 2816 | RETURN_IF_ERROR (demangle_type (dm)); |
| 2817 | } |
| 2818 | } |
| 2819 | |
| 2820 | ++sequence; |
| 2821 | } |
| 2822 | RETURN_IF_ERROR (result_add_char (dm, ')')); |
| 2823 | |
| 2824 | /* We should have demangled at least one parameter type (which would |
| 2825 | be void, for a function that takes no parameters), plus the |
| 2826 | return type, if we were supposed to demangle that. */ |
| 2827 | if (sequence == -1) |
| 2828 | return "Missing function return type."; |
| 2829 | else if (sequence == 0) |
| 2830 | return "Missing function parameter."; |
| 2831 | |
| 2832 | return STATUS_OK; |
| 2833 | } |
| 2834 | |
| 2835 | /* Demangles and emits a <class-enum-type>. *ENCODE_RETURN_TYPE is set to |
| 2836 | non-zero if the type is a template-id, zero otherwise. |
| 2837 | |
| 2838 | <class-enum-type> ::= <name> */ |
| 2839 | |
| 2840 | static status_t |
| 2841 | demangle_class_enum_type (dm, encode_return_type) |
| 2842 | demangling_t dm; |
| 2843 | int *encode_return_type; |
| 2844 | { |
| 2845 | DEMANGLE_TRACE ("class-enum-type", dm); |
| 2846 | |
| 2847 | RETURN_IF_ERROR (demangle_name (dm, encode_return_type)); |
| 2848 | return STATUS_OK; |
| 2849 | } |
| 2850 | |
| 2851 | /* Demangles and emits an <array-type>. |
| 2852 | |
| 2853 | If PTR_INSERT_POS is not NULL, the array type is formatted as a |
| 2854 | pointer or reference to an array, except that asterisk and |
| 2855 | ampersand punctuation is omitted (since it's not know at this |
| 2856 | point). *PTR_INSERT_POS is set to the position in the demangled |
| 2857 | name at which this punctuation should be inserted. For example, |
| 2858 | `A10_i' is demangled to `int () [10]' and *PTR_INSERT_POS points |
| 2859 | between the parentheses. |
| 2860 | |
| 2861 | If PTR_INSERT_POS is NULL, the array type is assumed not to be |
| 2862 | pointer- or reference-qualified. Then, for example, `A10_i' is |
| 2863 | demangled simply as `int[10]'. |
| 2864 | |
| 2865 | <array-type> ::= A [<dimension number>] _ <element type> |
| 2866 | ::= A <dimension expression> _ <element type> */ |
| 2867 | |
| 2868 | static status_t |
| 2869 | demangle_array_type (dm, ptr_insert_pos) |
| 2870 | demangling_t dm; |
| 2871 | int *ptr_insert_pos; |
| 2872 | { |
| 2873 | status_t status = STATUS_OK; |
| 2874 | dyn_string_t array_size = NULL; |
| 2875 | char peek; |
| 2876 | |
| 2877 | DEMANGLE_TRACE ("array-type", dm); |
| 2878 | |
| 2879 | RETURN_IF_ERROR (demangle_char (dm, 'A')); |
| 2880 | |
| 2881 | /* Demangle the array size into array_size. */ |
| 2882 | peek = peek_char (dm); |
| 2883 | if (peek == '_') |
| 2884 | /* Array bound is omitted. This is a C99-style VLA. */ |
| 2885 | ; |
| 2886 | else if (IS_DIGIT (peek_char (dm))) |
| 2887 | { |
| 2888 | /* It looks like a constant array bound. */ |
| 2889 | array_size = dyn_string_new (10); |
| 2890 | if (array_size == NULL) |
| 2891 | return STATUS_ALLOCATION_FAILED; |
| 2892 | status = demangle_number_literally (dm, array_size, 10, 0); |
| 2893 | } |
| 2894 | else |
| 2895 | { |
| 2896 | /* Anything is must be an expression for a nont-constant array |
| 2897 | bound. This happens if the array type occurs in a template |
| 2898 | and the array bound references a template parameter. */ |
| 2899 | RETURN_IF_ERROR (result_push (dm)); |
| 2900 | RETURN_IF_ERROR (demangle_expression (dm)); |
| 2901 | array_size = (dyn_string_t) result_pop (dm); |
| 2902 | } |
| 2903 | /* array_size may have been allocated by now, so we can't use |
| 2904 | RETURN_IF_ERROR until it's been deallocated. */ |
| 2905 | |
| 2906 | /* Demangle the base type of the array. */ |
| 2907 | if (STATUS_NO_ERROR (status)) |
| 2908 | status = demangle_char (dm, '_'); |
| 2909 | if (STATUS_NO_ERROR (status)) |
| 2910 | status = demangle_type (dm); |
| 2911 | |
| 2912 | if (ptr_insert_pos != NULL) |
| 2913 | { |
| 2914 | /* This array is actually part of an pointer- or |
| 2915 | reference-to-array type. Format appropriately, except we |
| 2916 | don't know which and how much punctuation to use. */ |
| 2917 | if (STATUS_NO_ERROR (status)) |
| 2918 | status = result_add (dm, " () "); |
| 2919 | /* Let the caller know where to insert the punctuation. */ |
| 2920 | *ptr_insert_pos = result_caret_pos (dm) - 2; |
| 2921 | } |
| 2922 | |
| 2923 | /* Emit the array dimension syntax. */ |
| 2924 | if (STATUS_NO_ERROR (status)) |
| 2925 | status = result_add_char (dm, '['); |
| 2926 | if (STATUS_NO_ERROR (status) && array_size != NULL) |
| 2927 | status = result_add_string (dm, array_size); |
| 2928 | if (STATUS_NO_ERROR (status)) |
| 2929 | status = result_add_char (dm, ']'); |
| 2930 | if (array_size != NULL) |
| 2931 | dyn_string_delete (array_size); |
| 2932 | |
| 2933 | RETURN_IF_ERROR (status); |
| 2934 | |
| 2935 | return STATUS_OK; |
| 2936 | } |
| 2937 | |
| 2938 | /* Demangles and emits a <template-param>. |
| 2939 | |
| 2940 | <template-param> ::= T_ # first template parameter |
| 2941 | ::= T <parameter-2 number> _ */ |
| 2942 | |
| 2943 | static status_t |
| 2944 | demangle_template_param (dm) |
| 2945 | demangling_t dm; |
| 2946 | { |
| 2947 | int parm_number; |
| 2948 | template_arg_list_t current_arg_list = current_template_arg_list (dm); |
| 2949 | string_list_t arg; |
| 2950 | |
| 2951 | DEMANGLE_TRACE ("template-param", dm); |
| 2952 | |
| 2953 | /* Make sure there is a template argmust list in which to look up |
| 2954 | this parameter reference. */ |
| 2955 | if (current_arg_list == NULL) |
| 2956 | return "Template parameter outside of template."; |
| 2957 | |
| 2958 | RETURN_IF_ERROR (demangle_char (dm, 'T')); |
| 2959 | if (peek_char (dm) == '_') |
| 2960 | parm_number = 0; |
| 2961 | else |
| 2962 | { |
| 2963 | RETURN_IF_ERROR (demangle_number (dm, &parm_number, 10, 0)); |
| 2964 | ++parm_number; |
| 2965 | } |
| 2966 | RETURN_IF_ERROR (demangle_char (dm, '_')); |
| 2967 | |
| 2968 | arg = template_arg_list_get_arg (current_arg_list, parm_number); |
| 2969 | if (arg == NULL) |
| 2970 | /* parm_number exceeded the number of arguments in the current |
| 2971 | template argument list. */ |
| 2972 | return "Template parameter number out of bounds."; |
| 2973 | RETURN_IF_ERROR (result_add_string (dm, (dyn_string_t) arg)); |
| 2974 | |
| 2975 | return STATUS_OK; |
| 2976 | } |
| 2977 | |
| 2978 | /* Demangles and emits a <template-args>. |
| 2979 | |
| 2980 | <template-args> ::= I <template-arg>+ E */ |
| 2981 | |
| 2982 | static status_t |
| 2983 | demangle_template_args (dm) |
| 2984 | demangling_t dm; |
| 2985 | { |
| 2986 | int first = 1; |
| 2987 | dyn_string_t old_last_source_name; |
| 2988 | template_arg_list_t arg_list = template_arg_list_new (); |
| 2989 | |
| 2990 | if (arg_list == NULL) |
| 2991 | return STATUS_ALLOCATION_FAILED; |
| 2992 | |
| 2993 | /* Preserve the most recently demangled source name. */ |
| 2994 | old_last_source_name = dm->last_source_name; |
| 2995 | dm->last_source_name = dyn_string_new (0); |
| 2996 | |
| 2997 | DEMANGLE_TRACE ("template-args", dm); |
| 2998 | |
| 2999 | if (dm->last_source_name == NULL) |
| 3000 | return STATUS_ALLOCATION_FAILED; |
| 3001 | |
| 3002 | RETURN_IF_ERROR (demangle_char (dm, 'I')); |
| 3003 | RETURN_IF_ERROR (result_open_template_list (dm)); |
| 3004 | do |
| 3005 | { |
| 3006 | string_list_t arg; |
| 3007 | |
| 3008 | if (first) |
| 3009 | first = 0; |
| 3010 | else |
| 3011 | RETURN_IF_ERROR (result_add (dm, ", ")); |
| 3012 | |
| 3013 | /* Capture the template arg. */ |
| 3014 | RETURN_IF_ERROR (result_push (dm)); |
| 3015 | RETURN_IF_ERROR (demangle_template_arg (dm)); |
| 3016 | arg = result_pop (dm); |
| 3017 | |
| 3018 | /* Emit it in the demangled name. */ |
| 3019 | RETURN_IF_ERROR (result_add_string (dm, (dyn_string_t) arg)); |
| 3020 | |
| 3021 | /* Save it for use in expanding <template-param>s. */ |
| 3022 | template_arg_list_add_arg (arg_list, arg); |
| 3023 | } |
| 3024 | while (peek_char (dm) != 'E'); |
| 3025 | /* Append the '>'. */ |
| 3026 | RETURN_IF_ERROR (result_close_template_list (dm)); |
| 3027 | |
| 3028 | /* Consume the 'E'. */ |
| 3029 | advance_char (dm); |
| 3030 | |
| 3031 | /* Restore the most recent demangled source name. */ |
| 3032 | dyn_string_delete (dm->last_source_name); |
| 3033 | dm->last_source_name = old_last_source_name; |
| 3034 | |
| 3035 | /* Push the list onto the top of the stack of template argument |
| 3036 | lists, so that arguments from it are used from now on when |
| 3037 | expanding <template-param>s. */ |
| 3038 | push_template_arg_list (dm, arg_list); |
| 3039 | |
| 3040 | return STATUS_OK; |
| 3041 | } |
| 3042 | |
| 3043 | /* This function, which does not correspond to a production in the |
| 3044 | mangling spec, handles the `literal' production for both |
| 3045 | <template-arg> and <expr-primary>. It does not expect or consume |
| 3046 | the initial `L' or final `E'. The demangling is given by: |
| 3047 | |
| 3048 | <literal> ::= <type> </value/ number> |
| 3049 | |
| 3050 | and the emitted output is `(type)number'. */ |
| 3051 | |
| 3052 | static status_t |
| 3053 | demangle_literal (dm) |
| 3054 | demangling_t dm; |
| 3055 | { |
| 3056 | char peek = peek_char (dm); |
| 3057 | dyn_string_t value_string; |
| 3058 | status_t status; |
| 3059 | |
| 3060 | DEMANGLE_TRACE ("literal", dm); |
| 3061 | |
| 3062 | if (!flag_verbose && peek >= 'a' && peek <= 'z') |
| 3063 | { |
| 3064 | /* If not in verbose mode and this is a builtin type, see if we |
| 3065 | can produce simpler numerical output. In particular, for |
| 3066 | integer types shorter than `long', just write the number |
| 3067 | without type information; for bools, write `true' or `false'. |
| 3068 | Other refinements could be made here too. */ |
| 3069 | |
| 3070 | /* This constant string is used to map from <builtin-type> codes |
| 3071 | (26 letters of the alphabet) to codes that determine how the |
| 3072 | value will be displayed. The codes are: |
| 3073 | b: display as bool |
| 3074 | i: display as int |
| 3075 | l: display as long |
| 3076 | A space means the value will be represented using cast |
| 3077 | notation. */ |
| 3078 | static const char *const code_map = "ibi iii ll ii i "; |
| 3079 | |
| 3080 | char code = code_map[peek - 'a']; |
| 3081 | /* FIXME: Implement demangling of floats and doubles. */ |
| 3082 | if (code == 'u') |
| 3083 | return STATUS_UNIMPLEMENTED; |
| 3084 | if (code == 'b') |
| 3085 | { |
| 3086 | /* It's a boolean. */ |
| 3087 | char value; |
| 3088 | |
| 3089 | /* Consume the b. */ |
| 3090 | advance_char (dm); |
| 3091 | /* Look at the next character. It should be 0 or 1, |
| 3092 | corresponding to false or true, respectively. */ |
| 3093 | value = peek_char (dm); |
| 3094 | if (value == '0') |
| 3095 | RETURN_IF_ERROR (result_add (dm, "false")); |
| 3096 | else if (value == '1') |
| 3097 | RETURN_IF_ERROR (result_add (dm, "true")); |
| 3098 | else |
| 3099 | return "Unrecognized bool constant."; |
| 3100 | /* Consume the 0 or 1. */ |
| 3101 | advance_char (dm); |
| 3102 | return STATUS_OK; |
| 3103 | } |
| 3104 | else if (code == 'i' || code == 'l') |
| 3105 | { |
| 3106 | /* It's an integer or long. */ |
| 3107 | |
| 3108 | /* Consume the type character. */ |
| 3109 | advance_char (dm); |
| 3110 | |
| 3111 | /* Demangle the number and write it out. */ |
| 3112 | value_string = dyn_string_new (0); |
| 3113 | status = demangle_number_literally (dm, value_string, 10, 1); |
| 3114 | if (STATUS_NO_ERROR (status)) |
| 3115 | status = result_add_string (dm, value_string); |
| 3116 | /* For long integers, append an l. */ |
| 3117 | if (code == 'l' && STATUS_NO_ERROR (status)) |
| 3118 | status = result_add_char (dm, code); |
| 3119 | dyn_string_delete (value_string); |
| 3120 | |
| 3121 | RETURN_IF_ERROR (status); |
| 3122 | return STATUS_OK; |
| 3123 | } |
| 3124 | /* ...else code == ' ', so fall through to represent this |
| 3125 | literal's type explicitly using cast syntax. */ |
| 3126 | } |
| 3127 | |
| 3128 | RETURN_IF_ERROR (result_add_char (dm, '(')); |
| 3129 | RETURN_IF_ERROR (demangle_type (dm)); |
| 3130 | RETURN_IF_ERROR (result_add_char (dm, ')')); |
| 3131 | |
| 3132 | value_string = dyn_string_new (0); |
| 3133 | if (value_string == NULL) |
| 3134 | return STATUS_ALLOCATION_FAILED; |
| 3135 | |
| 3136 | status = demangle_number_literally (dm, value_string, 10, 1); |
| 3137 | if (STATUS_NO_ERROR (status)) |
| 3138 | status = result_add_string (dm, value_string); |
| 3139 | dyn_string_delete (value_string); |
| 3140 | RETURN_IF_ERROR (status); |
| 3141 | |
| 3142 | return STATUS_OK; |
| 3143 | } |
| 3144 | |
| 3145 | /* Demangles and emits a <template-arg>. |
| 3146 | |
| 3147 | <template-arg> ::= <type> # type |
| 3148 | ::= L <type> <value number> E # literal |
| 3149 | ::= LZ <encoding> E # external name |
| 3150 | ::= X <expression> E # expression */ |
| 3151 | |
| 3152 | static status_t |
| 3153 | demangle_template_arg (dm) |
| 3154 | demangling_t dm; |
| 3155 | { |
| 3156 | DEMANGLE_TRACE ("template-arg", dm); |
| 3157 | |
| 3158 | switch (peek_char (dm)) |
| 3159 | { |
| 3160 | case 'L': |
| 3161 | advance_char (dm); |
| 3162 | |
| 3163 | if (peek_char (dm) == 'Z') |
| 3164 | { |
| 3165 | /* External name. */ |
| 3166 | advance_char (dm); |
| 3167 | /* FIXME: Standard is contradictory here. */ |
| 3168 | RETURN_IF_ERROR (demangle_encoding (dm)); |
| 3169 | } |
| 3170 | else |
| 3171 | RETURN_IF_ERROR (demangle_literal (dm)); |
| 3172 | RETURN_IF_ERROR (demangle_char (dm, 'E')); |
| 3173 | break; |
| 3174 | |
| 3175 | case 'X': |
| 3176 | /* Expression. */ |
| 3177 | advance_char (dm); |
| 3178 | RETURN_IF_ERROR (demangle_expression (dm)); |
| 3179 | RETURN_IF_ERROR (demangle_char (dm, 'E')); |
| 3180 | break; |
| 3181 | |
| 3182 | default: |
| 3183 | RETURN_IF_ERROR (demangle_type (dm)); |
| 3184 | break; |
| 3185 | } |
| 3186 | |
| 3187 | return STATUS_OK; |
| 3188 | } |
| 3189 | |
| 3190 | /* Demangles and emits an <expression>. |
| 3191 | |
| 3192 | <expression> ::= <unary operator-name> <expression> |
| 3193 | ::= <binary operator-name> <expression> <expression> |
| 3194 | ::= <expr-primary> |
| 3195 | ::= <scope-expression> */ |
| 3196 | |
| 3197 | static status_t |
| 3198 | demangle_expression (dm) |
| 3199 | demangling_t dm; |
| 3200 | { |
| 3201 | char peek = peek_char (dm); |
| 3202 | |
| 3203 | DEMANGLE_TRACE ("expression", dm); |
| 3204 | |
| 3205 | if (peek == 'L' || peek == 'T') |
| 3206 | RETURN_IF_ERROR (demangle_expr_primary (dm)); |
| 3207 | else if (peek == 's' && peek_char_next (dm) == 'r') |
| 3208 | RETURN_IF_ERROR (demangle_scope_expression (dm)); |
| 3209 | else |
| 3210 | /* An operator expression. */ |
| 3211 | { |
| 3212 | int num_args; |
| 3213 | int type_arg; |
| 3214 | status_t status = STATUS_OK; |
| 3215 | dyn_string_t operator_name; |
| 3216 | |
| 3217 | /* We have an operator name. Since we want to output binary |
| 3218 | operations in infix notation, capture the operator name |
| 3219 | first. */ |
| 3220 | RETURN_IF_ERROR (result_push (dm)); |
| 3221 | RETURN_IF_ERROR (demangle_operator_name (dm, 1, &num_args, |
| 3222 | &type_arg)); |
| 3223 | operator_name = (dyn_string_t) result_pop (dm); |
| 3224 | |
| 3225 | /* If it's binary, do an operand first. */ |
| 3226 | if (num_args > 1) |
| 3227 | { |
| 3228 | status = result_add_char (dm, '('); |
| 3229 | if (STATUS_NO_ERROR (status)) |
| 3230 | status = demangle_expression (dm); |
| 3231 | if (STATUS_NO_ERROR (status)) |
| 3232 | status = result_add_char (dm, ')'); |
| 3233 | } |
| 3234 | |
| 3235 | /* Emit the operator. */ |
| 3236 | if (STATUS_NO_ERROR (status)) |
| 3237 | status = result_add_string (dm, operator_name); |
| 3238 | dyn_string_delete (operator_name); |
| 3239 | RETURN_IF_ERROR (status); |
| 3240 | |
| 3241 | /* Emit its second (if binary) or only (if unary) operand. */ |
| 3242 | RETURN_IF_ERROR (result_add_char (dm, '(')); |
| 3243 | if (type_arg) |
| 3244 | RETURN_IF_ERROR (demangle_type (dm)); |
| 3245 | else |
| 3246 | RETURN_IF_ERROR (demangle_expression (dm)); |
| 3247 | RETURN_IF_ERROR (result_add_char (dm, ')')); |
| 3248 | |
| 3249 | /* The ternary operator takes a third operand. */ |
| 3250 | if (num_args == 3) |
| 3251 | { |
| 3252 | RETURN_IF_ERROR (result_add (dm, ":(")); |
| 3253 | RETURN_IF_ERROR (demangle_expression (dm)); |
| 3254 | RETURN_IF_ERROR (result_add_char (dm, ')')); |
| 3255 | } |
| 3256 | } |
| 3257 | |
| 3258 | return STATUS_OK; |
| 3259 | } |
| 3260 | |
| 3261 | /* Demangles and emits a <scope-expression>. |
| 3262 | |
| 3263 | <scope-expression> ::= sr <qualifying type> <source-name> |
| 3264 | ::= sr <qualifying type> <encoding> */ |
| 3265 | |
| 3266 | static status_t |
| 3267 | demangle_scope_expression (dm) |
| 3268 | demangling_t dm; |
| 3269 | { |
| 3270 | RETURN_IF_ERROR (demangle_char (dm, 's')); |
| 3271 | RETURN_IF_ERROR (demangle_char (dm, 'r')); |
| 3272 | RETURN_IF_ERROR (demangle_type (dm)); |
| 3273 | RETURN_IF_ERROR (result_add (dm, "::")); |
| 3274 | RETURN_IF_ERROR (demangle_encoding (dm)); |
| 3275 | return STATUS_OK; |
| 3276 | } |
| 3277 | |
| 3278 | /* Demangles and emits an <expr-primary>. |
| 3279 | |
| 3280 | <expr-primary> ::= <template-param> |
| 3281 | ::= L <type> <value number> E # literal |
| 3282 | ::= L <mangled-name> E # external name */ |
| 3283 | |
| 3284 | static status_t |
| 3285 | demangle_expr_primary (dm) |
| 3286 | demangling_t dm; |
| 3287 | { |
| 3288 | char peek = peek_char (dm); |
| 3289 | |
| 3290 | DEMANGLE_TRACE ("expr-primary", dm); |
| 3291 | |
| 3292 | if (peek == 'T') |
| 3293 | RETURN_IF_ERROR (demangle_template_param (dm)); |
| 3294 | else if (peek == 'L') |
| 3295 | { |
| 3296 | /* Consume the `L'. */ |
| 3297 | advance_char (dm); |
| 3298 | peek = peek_char (dm); |
| 3299 | |
| 3300 | if (peek == '_') |
| 3301 | RETURN_IF_ERROR (demangle_mangled_name (dm)); |
| 3302 | else |
| 3303 | RETURN_IF_ERROR (demangle_literal (dm)); |
| 3304 | |
| 3305 | RETURN_IF_ERROR (demangle_char (dm, 'E')); |
| 3306 | } |
| 3307 | else |
| 3308 | return STATUS_ERROR; |
| 3309 | |
| 3310 | return STATUS_OK; |
| 3311 | } |
| 3312 | |
| 3313 | /* Demangles and emits a <substitution>. Sets *TEMPLATE_P to non-zero |
| 3314 | if the substitution is the name of a template, zero otherwise. |
| 3315 | |
| 3316 | <substitution> ::= S <seq-id> _ |
| 3317 | ::= S_ |
| 3318 | |
| 3319 | ::= St # ::std:: |
| 3320 | ::= Sa # ::std::allocator |
| 3321 | ::= Sb # ::std::basic_string |
| 3322 | ::= Ss # ::std::basic_string<char, |
| 3323 | ::std::char_traits<char>, |
| 3324 | ::std::allocator<char> > |
| 3325 | ::= Si # ::std::basic_istream<char, |
| 3326 | std::char_traits<char> > |
| 3327 | ::= So # ::std::basic_ostream<char, |
| 3328 | std::char_traits<char> > |
| 3329 | ::= Sd # ::std::basic_iostream<char, |
| 3330 | std::char_traits<char> > |
| 3331 | */ |
| 3332 | |
| 3333 | static status_t |
| 3334 | demangle_substitution (dm, template_p) |
| 3335 | demangling_t dm; |
| 3336 | int *template_p; |
| 3337 | { |
| 3338 | int seq_id; |
| 3339 | int peek; |
| 3340 | dyn_string_t text; |
| 3341 | |
| 3342 | DEMANGLE_TRACE ("substitution", dm); |
| 3343 | |
| 3344 | RETURN_IF_ERROR (demangle_char (dm, 'S')); |
| 3345 | |
| 3346 | /* Scan the substitution sequence index. A missing number denotes |
| 3347 | the first index. */ |
| 3348 | peek = peek_char (dm); |
| 3349 | if (peek == '_') |
| 3350 | seq_id = -1; |
| 3351 | /* If the following character is 0-9 or a capital letter, interpret |
| 3352 | the sequence up to the next underscore as a base-36 substitution |
| 3353 | index. */ |
| 3354 | else if (IS_DIGIT ((unsigned char) peek) |
| 3355 | || (peek >= 'A' && peek <= 'Z')) |
| 3356 | RETURN_IF_ERROR (demangle_number (dm, &seq_id, 36, 0)); |
| 3357 | else |
| 3358 | { |
| 3359 | const char *new_last_source_name = NULL; |
| 3360 | |
| 3361 | switch (peek) |
| 3362 | { |
| 3363 | case 't': |
| 3364 | RETURN_IF_ERROR (result_add (dm, "std")); |
| 3365 | break; |
| 3366 | |
| 3367 | case 'a': |
| 3368 | RETURN_IF_ERROR (result_add (dm, "std::allocator")); |
| 3369 | new_last_source_name = "allocator"; |
| 3370 | *template_p = 1; |
| 3371 | break; |
| 3372 | |
| 3373 | case 'b': |
| 3374 | RETURN_IF_ERROR (result_add (dm, "std::basic_string")); |
| 3375 | new_last_source_name = "basic_string"; |
| 3376 | *template_p = 1; |
| 3377 | break; |
| 3378 | |
| 3379 | case 's': |
| 3380 | if (!flag_verbose) |
| 3381 | { |
| 3382 | RETURN_IF_ERROR (result_add (dm, "std::string")); |
| 3383 | new_last_source_name = "string"; |
| 3384 | } |
| 3385 | else |
| 3386 | { |
| 3387 | RETURN_IF_ERROR (result_add (dm, "std::basic_string<char, std::char_traits<char>, std::allocator<char> >")); |
| 3388 | new_last_source_name = "basic_string"; |
| 3389 | } |
| 3390 | *template_p = 0; |
| 3391 | break; |
| 3392 | |
| 3393 | case 'i': |
| 3394 | if (!flag_verbose) |
| 3395 | { |
| 3396 | RETURN_IF_ERROR (result_add (dm, "std::istream")); |
| 3397 | new_last_source_name = "istream"; |
| 3398 | } |
| 3399 | else |
| 3400 | { |
| 3401 | RETURN_IF_ERROR (result_add (dm, "std::basic_istream<char, std::char_traints<char> >")); |
| 3402 | new_last_source_name = "basic_istream"; |
| 3403 | } |
| 3404 | *template_p = 0; |
| 3405 | break; |
| 3406 | |
| 3407 | case 'o': |
| 3408 | if (!flag_verbose) |
| 3409 | { |
| 3410 | RETURN_IF_ERROR (result_add (dm, "std::ostream")); |
| 3411 | new_last_source_name = "ostream"; |
| 3412 | } |
| 3413 | else |
| 3414 | { |
| 3415 | RETURN_IF_ERROR (result_add (dm, "std::basic_ostream<char, std::char_traits<char> >")); |
| 3416 | new_last_source_name = "basic_ostream"; |
| 3417 | } |
| 3418 | *template_p = 0; |
| 3419 | break; |
| 3420 | |
| 3421 | case 'd': |
| 3422 | if (!flag_verbose) |
| 3423 | { |
| 3424 | RETURN_IF_ERROR (result_add (dm, "std::iostream")); |
| 3425 | new_last_source_name = "iostream"; |
| 3426 | } |
| 3427 | else |
| 3428 | { |
| 3429 | RETURN_IF_ERROR (result_add (dm, "std::basic_iostream<char, std::char_traits<char> >")); |
| 3430 | new_last_source_name = "basic_iostream"; |
| 3431 | } |
| 3432 | *template_p = 0; |
| 3433 | break; |
| 3434 | |
| 3435 | default: |
| 3436 | return "Unrecognized <substitution>."; |
| 3437 | } |
| 3438 | |
| 3439 | /* Consume the character we just processed. */ |
| 3440 | advance_char (dm); |
| 3441 | |
| 3442 | if (new_last_source_name != NULL) |
| 3443 | { |
| 3444 | if (!dyn_string_copy_cstr (dm->last_source_name, |
| 3445 | new_last_source_name)) |
| 3446 | return STATUS_ALLOCATION_FAILED; |
| 3447 | } |
| 3448 | |
| 3449 | return STATUS_OK; |
| 3450 | } |
| 3451 | |
| 3452 | /* Look up the substitution text. Since `S_' is the most recent |
| 3453 | substitution, `S0_' is the second-most-recent, etc., shift the |
| 3454 | numbering by one. */ |
| 3455 | text = substitution_get (dm, seq_id + 1, template_p); |
| 3456 | if (text == NULL) |
| 3457 | return "Substitution number out of range."; |
| 3458 | |
| 3459 | /* Emit the substitution text. */ |
| 3460 | RETURN_IF_ERROR (result_add_string (dm, text)); |
| 3461 | |
| 3462 | RETURN_IF_ERROR (demangle_char (dm, '_')); |
| 3463 | return STATUS_OK; |
| 3464 | } |
| 3465 | |
| 3466 | /* Demangles and emits a <local-name>. |
| 3467 | |
| 3468 | <local-name> := Z <function encoding> E <entity name> [<discriminator>] |
| 3469 | := Z <function encoding> E s [<discriminator>] */ |
| 3470 | |
| 3471 | static status_t |
| 3472 | demangle_local_name (dm) |
| 3473 | demangling_t dm; |
| 3474 | { |
| 3475 | DEMANGLE_TRACE ("local-name", dm); |
| 3476 | |
| 3477 | RETURN_IF_ERROR (demangle_char (dm, 'Z')); |
| 3478 | RETURN_IF_ERROR (demangle_encoding (dm)); |
| 3479 | RETURN_IF_ERROR (demangle_char (dm, 'E')); |
| 3480 | RETURN_IF_ERROR (result_add (dm, "::")); |
| 3481 | |
| 3482 | if (peek_char (dm) == 's') |
| 3483 | { |
| 3484 | /* Local character string literal. */ |
| 3485 | RETURN_IF_ERROR (result_add (dm, "string literal")); |
| 3486 | /* Consume the s. */ |
| 3487 | advance_char (dm); |
| 3488 | RETURN_IF_ERROR (demangle_discriminator (dm, 0)); |
| 3489 | } |
| 3490 | else |
| 3491 | { |
| 3492 | int unused; |
| 3493 | /* Local name for some other entity. Demangle its name. */ |
| 3494 | RETURN_IF_ERROR (demangle_name (dm, &unused)); |
| 3495 | RETURN_IF_ERROR (demangle_discriminator (dm, 1)); |
| 3496 | } |
| 3497 | |
| 3498 | return STATUS_OK; |
| 3499 | } |
| 3500 | |
| 3501 | /* Optimonally demangles and emits a <discriminator>. If there is no |
| 3502 | <discriminator> at the current position in the mangled string, the |
| 3503 | descriminator is assumed to be zero. Emit the discriminator number |
| 3504 | in parentheses, unless SUPPRESS_FIRST is non-zero and the |
| 3505 | discriminator is zero. |
| 3506 | |
| 3507 | <discriminator> ::= _ <number> */ |
| 3508 | |
| 3509 | static status_t |
| 3510 | demangle_discriminator (dm, suppress_first) |
| 3511 | demangling_t dm; |
| 3512 | int suppress_first; |
| 3513 | { |
| 3514 | /* Output for <discriminator>s to the demangled name is completely |
| 3515 | suppressed if not in verbose mode. */ |
| 3516 | |
| 3517 | if (peek_char (dm) == '_') |
| 3518 | { |
| 3519 | /* Consume the underscore. */ |
| 3520 | advance_char (dm); |
| 3521 | if (flag_verbose) |
| 3522 | RETURN_IF_ERROR (result_add (dm, " [#")); |
| 3523 | /* Check if there's a number following the underscore. */ |
| 3524 | if (IS_DIGIT ((unsigned char) peek_char (dm))) |
| 3525 | { |
| 3526 | int discriminator; |
| 3527 | /* Demangle the number. */ |
| 3528 | RETURN_IF_ERROR (demangle_number (dm, &discriminator, 10, 0)); |
| 3529 | if (flag_verbose) |
| 3530 | /* Write the discriminator. The mangled number is two |
| 3531 | less than the discriminator ordinal, counting from |
| 3532 | zero. */ |
| 3533 | RETURN_IF_ERROR (int_to_dyn_string (discriminator + 1, |
| 3534 | (dyn_string_t) dm->result)); |
| 3535 | } |
| 3536 | else |
| 3537 | return STATUS_ERROR; |
| 3538 | if (flag_verbose) |
| 3539 | RETURN_IF_ERROR (result_add_char (dm, ']')); |
| 3540 | } |
| 3541 | else if (!suppress_first) |
| 3542 | { |
| 3543 | if (flag_verbose) |
| 3544 | RETURN_IF_ERROR (result_add (dm, " [#0]")); |
| 3545 | } |
| 3546 | |
| 3547 | return STATUS_OK; |
| 3548 | } |
| 3549 | |
| 3550 | /* Demangle NAME into RESULT, which must be an initialized |
| 3551 | dyn_string_t. On success, returns STATUS_OK. On failure, returns |
| 3552 | an error message, and the contents of RESULT are unchanged. */ |
| 3553 | |
| 3554 | static status_t |
| 3555 | cp_demangle (name, result, style) |
| 3556 | const char *name; |
| 3557 | dyn_string_t result; |
| 3558 | int style; |
| 3559 | { |
| 3560 | status_t status; |
| 3561 | int length = strlen (name); |
| 3562 | |
| 3563 | if (length > 2 && name[0] == '_' && name[1] == 'Z') |
| 3564 | { |
| 3565 | demangling_t dm = demangling_new (name, style); |
| 3566 | if (dm == NULL) |
| 3567 | return STATUS_ALLOCATION_FAILED; |
| 3568 | |
| 3569 | status = result_push (dm); |
| 3570 | if (status != STATUS_OK) |
| 3571 | { |
| 3572 | demangling_delete (dm); |
| 3573 | return status; |
| 3574 | } |
| 3575 | |
| 3576 | status = demangle_mangled_name (dm); |
| 3577 | if (STATUS_NO_ERROR (status)) |
| 3578 | { |
| 3579 | dyn_string_t demangled = (dyn_string_t) result_pop (dm); |
| 3580 | if (!dyn_string_copy (result, demangled)) |
| 3581 | return STATUS_ALLOCATION_FAILED; |
| 3582 | dyn_string_delete (demangled); |
| 3583 | } |
| 3584 | |
| 3585 | demangling_delete (dm); |
| 3586 | } |
| 3587 | else |
| 3588 | { |
| 3589 | /* It's evidently not a mangled C++ name. It could be the name |
| 3590 | of something with C linkage, though, so just copy NAME into |
| 3591 | RESULT. */ |
| 3592 | if (!dyn_string_copy_cstr (result, name)) |
| 3593 | return STATUS_ALLOCATION_FAILED; |
| 3594 | status = STATUS_OK; |
| 3595 | } |
| 3596 | |
| 3597 | return status; |
| 3598 | } |
| 3599 | |
| 3600 | /* Demangle TYPE_NAME into RESULT, which must be an initialized |
| 3601 | dyn_string_t. On success, returns STATUS_OK. On failiure, returns |
| 3602 | an error message, and the contents of RESULT are unchanged. */ |
| 3603 | |
| 3604 | static status_t |
| 3605 | cp_demangle_type (type_name, result) |
| 3606 | const char* type_name; |
| 3607 | dyn_string_t result; |
| 3608 | { |
| 3609 | status_t status; |
| 3610 | demangling_t dm = demangling_new (type_name, DMGL_GNU_V3); |
| 3611 | |
| 3612 | if (dm == NULL) |
| 3613 | return STATUS_ALLOCATION_FAILED; |
| 3614 | |
| 3615 | /* Demangle the type name. The demangled name is stored in dm. */ |
| 3616 | status = result_push (dm); |
| 3617 | if (status != STATUS_OK) |
| 3618 | { |
| 3619 | demangling_delete (dm); |
| 3620 | return status; |
| 3621 | } |
| 3622 | |
| 3623 | status = demangle_type (dm); |
| 3624 | |
| 3625 | if (STATUS_NO_ERROR (status)) |
| 3626 | { |
| 3627 | /* The demangling succeeded. Pop the result out of dm and copy |
| 3628 | it into RESULT. */ |
| 3629 | dyn_string_t demangled = (dyn_string_t) result_pop (dm); |
| 3630 | if (!dyn_string_copy (result, demangled)) |
| 3631 | return STATUS_ALLOCATION_FAILED; |
| 3632 | dyn_string_delete (demangled); |
| 3633 | } |
| 3634 | |
| 3635 | /* Clean up. */ |
| 3636 | demangling_delete (dm); |
| 3637 | |
| 3638 | return status; |
| 3639 | } |
| 3640 | |
| 3641 | #if defined(IN_LIBGCC2) || defined(IN_GLIBCPP_V3) |
| 3642 | extern char *__cxa_demangle PARAMS ((const char *, char *, size_t *, int *)); |
| 3643 | |
| 3644 | /* ia64 ABI-mandated entry point in the C++ runtime library for performing |
| 3645 | demangling. MANGLED_NAME is a NUL-terminated character string |
| 3646 | containing the name to be demangled. |
| 3647 | |
| 3648 | OUTPUT_BUFFER is a region of memory, allocated with malloc, of |
| 3649 | *LENGTH bytes, into which the demangled name is stored. If |
| 3650 | OUTPUT_BUFFER is not long enough, it is expanded using realloc. |
| 3651 | OUTPUT_BUFFER may instead be NULL; in that case, the demangled name |
| 3652 | is placed in a region of memory allocated with malloc. |
| 3653 | |
| 3654 | If LENGTH is non-NULL, the length of the buffer conaining the |
| 3655 | demangled name, is placed in *LENGTH. |
| 3656 | |
| 3657 | The return value is a pointer to the start of the NUL-terminated |
| 3658 | demangled name, or NULL if the demangling fails. The caller is |
| 3659 | responsible for deallocating this memory using free. |
| 3660 | |
| 3661 | *STATUS is set to one of the following values: |
| 3662 | 0: The demangling operation succeeded. |
| 3663 | -1: A memory allocation failiure occurred. |
| 3664 | -2: MANGLED_NAME is not a valid name under the C++ ABI mangling rules. |
| 3665 | -3: One of the arguments is invalid. |
| 3666 | |
| 3667 | The demagling is performed using the C++ ABI mangling rules, with |
| 3668 | GNU extensions. */ |
| 3669 | |
| 3670 | char * |
| 3671 | __cxa_demangle (mangled_name, output_buffer, length, status) |
| 3672 | const char *mangled_name; |
| 3673 | char *output_buffer; |
| 3674 | size_t *length; |
| 3675 | int *status; |
| 3676 | { |
| 3677 | struct dyn_string demangled_name; |
| 3678 | status_t result; |
| 3679 | |
| 3680 | if (status == NULL) |
| 3681 | return NULL; |
| 3682 | |
| 3683 | if (mangled_name == NULL) { |
| 3684 | *status = -3; |
| 3685 | return NULL; |
| 3686 | } |
| 3687 | |
| 3688 | /* Did the caller provide a buffer for the demangled name? */ |
| 3689 | if (output_buffer == NULL) { |
| 3690 | /* No; dyn_string will malloc a buffer for us. */ |
| 3691 | if (!dyn_string_init (&demangled_name, 0)) |
| 3692 | { |
| 3693 | *status = -1; |
| 3694 | return NULL; |
| 3695 | } |
| 3696 | } |
| 3697 | else { |
| 3698 | /* Yes. Check that the length was provided. */ |
| 3699 | if (length == NULL) { |
| 3700 | *status = -3; |
| 3701 | return NULL; |
| 3702 | } |
| 3703 | /* Install the buffer into a dyn_string. */ |
| 3704 | demangled_name.allocated = *length; |
| 3705 | demangled_name.length = 0; |
| 3706 | demangled_name.s = output_buffer; |
| 3707 | } |
| 3708 | |
| 3709 | if (mangled_name[0] == '_' && mangled_name[1] == 'Z') |
| 3710 | /* MANGLED_NAME apprears to be a function or variable name. |
| 3711 | Demangle it accordingly. */ |
| 3712 | result = cp_demangle (mangled_name, &demangled_name, 0); |
| 3713 | else |
| 3714 | /* Try to demangled MANGLED_NAME as the name of a type. */ |
| 3715 | result = cp_demangle_type (mangled_name, &demangled_name); |
| 3716 | |
| 3717 | if (result == STATUS_OK) |
| 3718 | /* The demangling succeeded. */ |
| 3719 | { |
| 3720 | /* If LENGTH isn't NULL, store the allocated buffer length |
| 3721 | there; the buffer may have been realloced by dyn_string |
| 3722 | functions. */ |
| 3723 | if (length != NULL) |
| 3724 | *length = demangled_name.allocated; |
| 3725 | /* The operation was a success. */ |
| 3726 | *status = 0; |
| 3727 | return dyn_string_buf (&demangled_name); |
| 3728 | } |
| 3729 | else if (result == STATUS_ALLOCATION_FAILED) |
| 3730 | /* A call to malloc or realloc failed during the demangling |
| 3731 | operation. */ |
| 3732 | { |
| 3733 | *status = -1; |
| 3734 | return NULL; |
| 3735 | } |
| 3736 | else |
| 3737 | /* The demangling failed for another reason, most probably because |
| 3738 | MANGLED_NAME isn't a valid mangled name. */ |
| 3739 | { |
| 3740 | /* If the buffer containing the demangled name wasn't provided |
| 3741 | by the caller, free it. */ |
| 3742 | if (output_buffer == NULL) |
| 3743 | free (dyn_string_buf (&demangled_name)); |
| 3744 | *status = -2; |
| 3745 | return NULL; |
| 3746 | } |
| 3747 | } |
| 3748 | |
| 3749 | #else /* ! (IN_LIBGCC2 || IN_GLIBCPP_V3) */ |
| 3750 | |
| 3751 | /* Variant entry point for integration with the existing cplus-dem |
| 3752 | demangler. Attempts to demangle MANGLED. If the demangling |
| 3753 | succeeds, returns a buffer, allocated with malloc, containing the |
| 3754 | demangled name. The caller must deallocate the buffer using free. |
| 3755 | If the demangling failes, returns NULL. */ |
| 3756 | |
| 3757 | char * |
| 3758 | cplus_demangle_v3 (mangled, options) |
| 3759 | const char* mangled; |
| 3760 | int options; |
| 3761 | { |
| 3762 | dyn_string_t demangled; |
| 3763 | status_t status; |
| 3764 | int type = !!(options & DMGL_TYPES); |
| 3765 | |
| 3766 | if (mangled[0] == '_' && mangled[1] == 'Z') |
| 3767 | /* It is not a type. */ |
| 3768 | type = 0; |
| 3769 | else |
| 3770 | { |
| 3771 | /* It is a type. Stop if we don't want to demangle types. */ |
| 3772 | if (!type) |
| 3773 | return NULL; |
| 3774 | } |
| 3775 | |
| 3776 | flag_verbose = !!(options & DMGL_VERBOSE); |
| 3777 | |
| 3778 | /* Create a dyn_string to hold the demangled name. */ |
| 3779 | demangled = dyn_string_new (0); |
| 3780 | /* Attempt the demangling. */ |
| 3781 | if (!type) |
| 3782 | /* Appears to be a function or variable name. */ |
| 3783 | status = cp_demangle (mangled, demangled, 0); |
| 3784 | else |
| 3785 | /* Try to demangle it as the name of a type. */ |
| 3786 | status = cp_demangle_type (mangled, demangled); |
| 3787 | |
| 3788 | if (STATUS_NO_ERROR (status)) |
| 3789 | /* Demangling succeeded. */ |
| 3790 | { |
| 3791 | /* Grab the demangled result from the dyn_string. It was |
| 3792 | allocated with malloc, so we can return it directly. */ |
| 3793 | char *return_value = dyn_string_release (demangled); |
| 3794 | /* Hand back the demangled name. */ |
| 3795 | return return_value; |
| 3796 | } |
| 3797 | else if (status == STATUS_ALLOCATION_FAILED) |
| 3798 | { |
| 3799 | fprintf (stderr, "Memory allocation failed.\n"); |
| 3800 | abort (); |
| 3801 | } |
| 3802 | else |
| 3803 | /* Demangling failed. */ |
| 3804 | { |
| 3805 | dyn_string_delete (demangled); |
| 3806 | return NULL; |
| 3807 | } |
| 3808 | } |
| 3809 | |
| 3810 | /* Demangle a Java symbol. Java uses a subset of the V3 ABI C++ mangling |
| 3811 | conventions, but the output formatting is a little different. |
| 3812 | This instructs the C++ demangler not to emit pointer characters ("*"), and |
| 3813 | to use Java's namespace separator symbol ("." instead of "::"). It then |
| 3814 | does an additional pass over the demangled output to replace instances |
| 3815 | of JArray<TYPE> with TYPE[]. */ |
| 3816 | |
| 3817 | char * |
| 3818 | java_demangle_v3 (mangled) |
| 3819 | const char* mangled; |
| 3820 | { |
| 3821 | dyn_string_t demangled; |
| 3822 | char *next; |
| 3823 | char *end; |
| 3824 | int len; |
| 3825 | status_t status; |
| 3826 | int nesting = 0; |
| 3827 | char *cplus_demangled; |
| 3828 | char *return_value; |
| 3829 | |
| 3830 | /* Create a dyn_string to hold the demangled name. */ |
| 3831 | demangled = dyn_string_new (0); |
| 3832 | |
| 3833 | /* Attempt the demangling. */ |
| 3834 | status = cp_demangle ((char *) mangled, demangled, DMGL_JAVA); |
| 3835 | |
| 3836 | if (STATUS_NO_ERROR (status)) |
| 3837 | /* Demangling succeeded. */ |
| 3838 | { |
| 3839 | /* Grab the demangled result from the dyn_string. */ |
| 3840 | cplus_demangled = dyn_string_release (demangled); |
| 3841 | } |
| 3842 | else if (status == STATUS_ALLOCATION_FAILED) |
| 3843 | { |
| 3844 | fprintf (stderr, "Memory allocation failed.\n"); |
| 3845 | abort (); |
| 3846 | } |
| 3847 | else |
| 3848 | /* Demangling failed. */ |
| 3849 | { |
| 3850 | dyn_string_delete (demangled); |
| 3851 | return NULL; |
| 3852 | } |
| 3853 | |
| 3854 | len = strlen (cplus_demangled); |
| 3855 | next = cplus_demangled; |
| 3856 | end = next + len; |
| 3857 | demangled = NULL; |
| 3858 | |
| 3859 | /* Replace occurances of JArray<TYPE> with TYPE[]. */ |
| 3860 | while (next < end) |
| 3861 | { |
| 3862 | char *open_str = strstr (next, "JArray<"); |
| 3863 | char *close_str = NULL; |
| 3864 | if (nesting > 0) |
| 3865 | close_str = strchr (next, '>'); |
| 3866 | |
| 3867 | if (open_str != NULL && (close_str == NULL || close_str > open_str)) |
| 3868 | { |
| 3869 | ++nesting; |
| 3870 | |
| 3871 | if (!demangled) |
| 3872 | demangled = dyn_string_new(len); |
| 3873 | |
| 3874 | /* Copy prepending symbols, if any. */ |
| 3875 | if (open_str > next) |
| 3876 | { |
| 3877 | open_str[0] = 0; |
| 3878 | dyn_string_append_cstr (demangled, next); |
| 3879 | } |
| 3880 | next = open_str + 7; |
| 3881 | } |
| 3882 | else if (close_str != NULL) |
| 3883 | { |
| 3884 | --nesting; |
| 3885 | |
| 3886 | /* Copy prepending type symbol, if any. Squash any spurious |
| 3887 | whitespace. */ |
| 3888 | if (close_str > next && next[0] != ' ') |
| 3889 | { |
| 3890 | close_str[0] = 0; |
| 3891 | dyn_string_append_cstr (demangled, next); |
| 3892 | } |
| 3893 | dyn_string_append_cstr (demangled, "[]"); |
| 3894 | next = close_str + 1; |
| 3895 | } |
| 3896 | else |
| 3897 | { |
| 3898 | /* There are no more arrays. Copy the rest of the symbol, or |
| 3899 | simply return the original symbol if no changes were made. */ |
| 3900 | if (next == cplus_demangled) |
| 3901 | return cplus_demangled; |
| 3902 | |
| 3903 | dyn_string_append_cstr (demangled, next); |
| 3904 | next = end; |
| 3905 | } |
| 3906 | } |
| 3907 | |
| 3908 | free (cplus_demangled); |
| 3909 | |
| 3910 | if (demangled) |
| 3911 | return_value = dyn_string_release (demangled); |
| 3912 | else |
| 3913 | return_value = NULL; |
| 3914 | |
| 3915 | return return_value; |
| 3916 | } |
| 3917 | |
| 3918 | #endif /* IN_LIBGCC2 || IN_GLIBCPP_V3 */ |
| 3919 | |
| 3920 | |
| 3921 | #ifndef IN_GLIBCPP_V3 |
| 3922 | /* Demangle NAME in the G++ V3 ABI demangling style, and return either |
| 3923 | zero, indicating that some error occurred, or a demangling_t |
| 3924 | holding the results. */ |
| 3925 | static demangling_t |
| 3926 | demangle_v3_with_details (name) |
| 3927 | const char *name; |
| 3928 | { |
| 3929 | demangling_t dm; |
| 3930 | status_t status; |
| 3931 | |
| 3932 | if (strncmp (name, "_Z", 2)) |
| 3933 | return 0; |
| 3934 | |
| 3935 | dm = demangling_new (name, DMGL_GNU_V3); |
| 3936 | if (dm == NULL) |
| 3937 | { |
| 3938 | fprintf (stderr, "Memory allocation failed.\n"); |
| 3939 | abort (); |
| 3940 | } |
| 3941 | |
| 3942 | status = result_push (dm); |
| 3943 | if (! STATUS_NO_ERROR (status)) |
| 3944 | { |
| 3945 | demangling_delete (dm); |
| 3946 | fprintf (stderr, "%s\n", status); |
| 3947 | abort (); |
| 3948 | } |
| 3949 | |
| 3950 | status = demangle_mangled_name (dm); |
| 3951 | if (STATUS_NO_ERROR (status)) |
| 3952 | return dm; |
| 3953 | |
| 3954 | demangling_delete (dm); |
| 3955 | return 0; |
| 3956 | } |
| 3957 | |
| 3958 | |
| 3959 | /* Return non-zero iff NAME is the mangled form of a constructor name |
| 3960 | in the G++ V3 ABI demangling style. Specifically, return: |
| 3961 | - '1' if NAME is a complete object constructor, |
| 3962 | - '2' if NAME is a base object constructor, or |
| 3963 | - '3' if NAME is a complete object allocating constructor. */ |
| 3964 | enum gnu_v3_ctor_kinds |
| 3965 | is_gnu_v3_mangled_ctor (name) |
| 3966 | const char *name; |
| 3967 | { |
| 3968 | demangling_t dm = demangle_v3_with_details (name); |
| 3969 | |
| 3970 | if (dm) |
| 3971 | { |
| 3972 | enum gnu_v3_ctor_kinds result = dm->is_constructor; |
| 3973 | demangling_delete (dm); |
| 3974 | return result; |
| 3975 | } |
| 3976 | else |
| 3977 | return (enum gnu_v3_ctor_kinds) 0; |
| 3978 | } |
| 3979 | |
| 3980 | |
| 3981 | /* Return non-zero iff NAME is the mangled form of a destructor name |
| 3982 | in the G++ V3 ABI demangling style. Specifically, return: |
| 3983 | - '0' if NAME is a deleting destructor, |
| 3984 | - '1' if NAME is a complete object destructor, or |
| 3985 | - '2' if NAME is a base object destructor. */ |
| 3986 | enum gnu_v3_dtor_kinds |
| 3987 | is_gnu_v3_mangled_dtor (name) |
| 3988 | const char *name; |
| 3989 | { |
| 3990 | demangling_t dm = demangle_v3_with_details (name); |
| 3991 | |
| 3992 | if (dm) |
| 3993 | { |
| 3994 | enum gnu_v3_dtor_kinds result = dm->is_destructor; |
| 3995 | demangling_delete (dm); |
| 3996 | return result; |
| 3997 | } |
| 3998 | else |
| 3999 | return (enum gnu_v3_dtor_kinds) 0; |
| 4000 | } |
| 4001 | #endif /* IN_GLIBCPP_V3 */ |
| 4002 | |
| 4003 | |
| 4004 | #ifdef STANDALONE_DEMANGLER |
| 4005 | |
| 4006 | #include "getopt.h" |
| 4007 | |
| 4008 | static void print_usage |
| 4009 | PARAMS ((FILE* fp, int exit_value)); |
| 4010 | |
| 4011 | /* Non-zero if CHAR is a character than can occur in a mangled name. */ |
| 4012 | #define is_mangled_char(CHAR) \ |
| 4013 | (IS_ALPHA (CHAR) || IS_DIGIT (CHAR) \ |
| 4014 | || (CHAR) == '_' || (CHAR) == '.' || (CHAR) == '$') |
| 4015 | |
| 4016 | /* The name of this program, as invoked. */ |
| 4017 | const char* program_name; |
| 4018 | |
| 4019 | /* Prints usage summary to FP and then exits with EXIT_VALUE. */ |
| 4020 | |
| 4021 | static void |
| 4022 | print_usage (fp, exit_value) |
| 4023 | FILE* fp; |
| 4024 | int exit_value; |
| 4025 | { |
| 4026 | fprintf (fp, "Usage: %s [options] [names ...]\n", program_name); |
| 4027 | fprintf (fp, "Options:\n"); |
| 4028 | fprintf (fp, " -h,--help Display this message.\n"); |
| 4029 | fprintf (fp, " -s,--strict Demangle standard names only.\n"); |
| 4030 | fprintf (fp, " -v,--verbose Produce verbose demanglings.\n"); |
| 4031 | fprintf (fp, "If names are provided, they are demangled. Otherwise filters standard input.\n"); |
| 4032 | |
| 4033 | exit (exit_value); |
| 4034 | } |
| 4035 | |
| 4036 | /* Option specification for getopt_long. */ |
| 4037 | static const struct option long_options[] = |
| 4038 | { |
| 4039 | { "help", no_argument, NULL, 'h' }, |
| 4040 | { "strict", no_argument, NULL, 's' }, |
| 4041 | { "verbose", no_argument, NULL, 'v' }, |
| 4042 | { NULL, no_argument, NULL, 0 }, |
| 4043 | }; |
| 4044 | |
| 4045 | /* Main entry for a demangling filter executable. It will demangle |
| 4046 | its command line arguments, if any. If none are provided, it will |
| 4047 | filter stdin to stdout, replacing any recognized mangled C++ names |
| 4048 | with their demangled equivalents. */ |
| 4049 | |
| 4050 | int |
| 4051 | main (argc, argv) |
| 4052 | int argc; |
| 4053 | char *argv[]; |
| 4054 | { |
| 4055 | status_t status; |
| 4056 | int i; |
| 4057 | int opt_char; |
| 4058 | |
| 4059 | /* Use the program name of this program, as invoked. */ |
| 4060 | program_name = argv[0]; |
| 4061 | |
| 4062 | /* Parse options. */ |
| 4063 | do |
| 4064 | { |
| 4065 | opt_char = getopt_long (argc, argv, "hsv", long_options, NULL); |
| 4066 | switch (opt_char) |
| 4067 | { |
| 4068 | case '?': /* Unrecognized option. */ |
| 4069 | print_usage (stderr, 1); |
| 4070 | break; |
| 4071 | |
| 4072 | case 'h': |
| 4073 | print_usage (stdout, 0); |
| 4074 | break; |
| 4075 | |
| 4076 | case 's': |
| 4077 | flag_strict = 1; |
| 4078 | break; |
| 4079 | |
| 4080 | case 'v': |
| 4081 | flag_verbose = 1; |
| 4082 | break; |
| 4083 | } |
| 4084 | } |
| 4085 | while (opt_char != -1); |
| 4086 | |
| 4087 | if (optind == argc) |
| 4088 | /* No command line arguments were provided. Filter stdin. */ |
| 4089 | { |
| 4090 | dyn_string_t mangled = dyn_string_new (3); |
| 4091 | dyn_string_t demangled = dyn_string_new (0); |
| 4092 | status_t status; |
| 4093 | |
| 4094 | /* Read all of input. */ |
| 4095 | while (!feof (stdin)) |
| 4096 | { |
| 4097 | char c = getchar (); |
| 4098 | |
| 4099 | /* The first character of a mangled name is an underscore. */ |
| 4100 | if (feof (stdin)) |
| 4101 | break; |
| 4102 | if (c != '_') |
| 4103 | { |
| 4104 | /* It's not a mangled name. Print the character and go |
| 4105 | on. */ |
| 4106 | putchar (c); |
| 4107 | continue; |
| 4108 | } |
| 4109 | c = getchar (); |
| 4110 | |
| 4111 | /* The second character of a mangled name is a capital `Z'. */ |
| 4112 | if (feof (stdin)) |
| 4113 | break; |
| 4114 | if (c != 'Z') |
| 4115 | { |
| 4116 | /* It's not a mangled name. Print the previous |
| 4117 | underscore, the `Z', and go on. */ |
| 4118 | putchar ('_'); |
| 4119 | putchar (c); |
| 4120 | continue; |
| 4121 | } |
| 4122 | |
| 4123 | /* Start keeping track of the candidate mangled name. */ |
| 4124 | dyn_string_append_char (mangled, '_'); |
| 4125 | dyn_string_append_char (mangled, 'Z'); |
| 4126 | |
| 4127 | /* Pile characters into mangled until we hit one that can't |
| 4128 | occur in a mangled name. */ |
| 4129 | c = getchar (); |
| 4130 | while (!feof (stdin) && is_mangled_char (c)) |
| 4131 | { |
| 4132 | dyn_string_append_char (mangled, c); |
| 4133 | if (feof (stdin)) |
| 4134 | break; |
| 4135 | c = getchar (); |
| 4136 | } |
| 4137 | |
| 4138 | /* Attempt to demangle the name. */ |
| 4139 | status = cp_demangle (dyn_string_buf (mangled), demangled, 0); |
| 4140 | |
| 4141 | /* If the demangling succeeded, great! Print out the |
| 4142 | demangled version. */ |
| 4143 | if (STATUS_NO_ERROR (status)) |
| 4144 | fputs (dyn_string_buf (demangled), stdout); |
| 4145 | /* Abort on allocation failures. */ |
| 4146 | else if (status == STATUS_ALLOCATION_FAILED) |
| 4147 | { |
| 4148 | fprintf (stderr, "Memory allocation failed.\n"); |
| 4149 | abort (); |
| 4150 | } |
| 4151 | /* Otherwise, it might not have been a mangled name. Just |
| 4152 | print out the original text. */ |
| 4153 | else |
| 4154 | fputs (dyn_string_buf (mangled), stdout); |
| 4155 | |
| 4156 | /* If we haven't hit EOF yet, we've read one character that |
| 4157 | can't occur in a mangled name, so print it out. */ |
| 4158 | if (!feof (stdin)) |
| 4159 | putchar (c); |
| 4160 | |
| 4161 | /* Clear the candidate mangled name, to start afresh next |
| 4162 | time we hit a `_Z'. */ |
| 4163 | dyn_string_clear (mangled); |
| 4164 | } |
| 4165 | |
| 4166 | dyn_string_delete (mangled); |
| 4167 | dyn_string_delete (demangled); |
| 4168 | } |
| 4169 | else |
| 4170 | /* Demangle command line arguments. */ |
| 4171 | { |
| 4172 | dyn_string_t result = dyn_string_new (0); |
| 4173 | |
| 4174 | /* Loop over command line arguments. */ |
| 4175 | for (i = optind; i < argc; ++i) |
| 4176 | { |
| 4177 | /* Attempt to demangle. */ |
| 4178 | status = cp_demangle (argv[i], result, 0); |
| 4179 | |
| 4180 | /* If it worked, print the demangled name. */ |
| 4181 | if (STATUS_NO_ERROR (status)) |
| 4182 | printf ("%s\n", dyn_string_buf (result)); |
| 4183 | /* Abort on allocaiton failures. */ |
| 4184 | else if (status == STATUS_ALLOCATION_FAILED) |
| 4185 | { |
| 4186 | fprintf (stderr, "Memory allocation failed.\n"); |
| 4187 | abort (); |
| 4188 | } |
| 4189 | /* If not, print the error message to stderr instead. */ |
| 4190 | else |
| 4191 | fprintf (stderr, "%s\n", status); |
| 4192 | } |
| 4193 | dyn_string_delete (result); |
| 4194 | } |
| 4195 | |
| 4196 | return 0; |
| 4197 | } |
| 4198 | |
| 4199 | #endif /* STANDALONE_DEMANGLER */ |