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168d63e5 | 1 | /* Demangler for IA64 / g++ standard C++ ABI. |
2 | Copyright (C) 2000 CodeSourcery LLC. | |
3 | Written by Alex Samuel <samuel@codesourcery.com>. | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
18 | */ | |
19 | ||
20 | /* This file implements demangling of C++ names mangled according to | |
21 | the IA64 / g++ standard C++ ABI. Use the cp_demangle function to | |
22 | demangle a mangled name, or compile with the preprocessor macro | |
23 | STANDALONE_DEMANGLER defined to create a demangling filter | |
24 | executable. */ | |
25 | ||
26 | #ifdef HAVE_CONFIG_H | |
27 | #include "config.h" | |
28 | #endif | |
29 | ||
68e6b6e1 | 30 | #include <sys/types.h> |
31 | ||
168d63e5 | 32 | #ifdef HAVE_STDLIB_H |
33 | #include <stdlib.h> | |
34 | #endif | |
35 | ||
168d63e5 | 36 | #include <stdio.h> |
168d63e5 | 37 | |
38 | #ifdef HAVE_STRING_H | |
39 | #include <string.h> | |
40 | #endif | |
41 | ||
42 | #include "ansidecl.h" | |
43 | #include "libiberty.h" | |
44 | #include "dyn-string.h" | |
4b7bc488 | 45 | #include "demangle.h" |
168d63e5 | 46 | |
47 | /* If CP_DEMANGLE_DEBUG is defined, a trace of the grammar evaluation, | |
48 | and other debugging output, will be generated. */ | |
49 | #ifdef CP_DEMANGLE_DEBUG | |
140d75d7 | 50 | #define DEMANGLE_TRACE(PRODUCTION, DM) \ |
51 | fprintf (stderr, " -> %-24s at position %3d\n", \ | |
168d63e5 | 52 | (PRODUCTION), current_position (DM)); |
53 | #else | |
54 | #define DEMANGLE_TRACE(PRODUCTION, DM) | |
55 | #endif | |
56 | ||
140d75d7 | 57 | /* Don't include <ctype.h>, to prevent additional unresolved symbols |
58 | from being dragged into the C++ runtime library. */ | |
59 | #define IS_DIGIT(CHAR) ((CHAR) >= '0' && (CHAR) <= '9') | |
60 | #define IS_ALPHA(CHAR) \ | |
61 | (((CHAR) >= 'a' && (CHAR) <= 'z') \ | |
62 | || ((CHAR) >= 'A' && (CHAR) <= 'Z')) | |
63 | ||
168d63e5 | 64 | /* If flag_verbose is zero, some simplifications will be made to the |
65 | output to make it easier to read and supress details that are | |
66 | generally not of interest to the average C++ programmer. | |
67 | Otherwise, the demangled representation will attempt to convey as | |
68 | much information as the mangled form. */ | |
69 | static int flag_verbose; | |
70 | ||
71 | /* If flag_strict is non-zero, demangle strictly according to the | |
72 | specification -- don't demangle special g++ manglings. */ | |
73 | static int flag_strict; | |
74 | ||
75 | /* String_list_t is an extended form of dyn_string_t which provides a link | |
76 | field. A string_list_t may safely be cast to and used as a | |
77 | dyn_string_t. */ | |
78 | ||
79 | struct string_list_def | |
80 | { | |
81 | struct dyn_string string; | |
82 | struct string_list_def *next; | |
83 | }; | |
84 | ||
85 | typedef struct string_list_def *string_list_t; | |
86 | ||
87 | /* Data structure representing a potential substitution. */ | |
88 | ||
89 | struct substitution_def | |
90 | { | |
91 | /* The demangled text of the substitution. */ | |
92 | dyn_string_t text; | |
93 | ||
94 | /* The template parameter that this represents, indexed from zero. | |
95 | If this is not a template paramter number, the value is | |
96 | NOT_TEMPLATE_PARM. */ | |
97 | int template_parm_number; | |
98 | ||
99 | /* Whether this substitution represents a template item. */ | |
100 | int template_p : 1; | |
101 | }; | |
102 | ||
103 | #define NOT_TEMPLATE_PARM (-1) | |
104 | ||
105 | /* Data structure representing a template argument list. */ | |
106 | ||
107 | struct template_arg_list_def | |
108 | { | |
109 | /* The next (lower) template argument list in the stack of currently | |
110 | active template arguments. */ | |
111 | struct template_arg_list_def *next; | |
112 | ||
113 | /* The first element in the list of template arguments in | |
114 | left-to-right order. */ | |
115 | string_list_t first_argument; | |
116 | ||
117 | /* The last element in the arguments lists. */ | |
118 | string_list_t last_argument; | |
119 | }; | |
120 | ||
121 | typedef struct template_arg_list_def *template_arg_list_t; | |
122 | ||
123 | /* Data structure to maintain the state of the current demangling. */ | |
124 | ||
125 | struct demangling_def | |
126 | { | |
127 | /* The full mangled name being mangled. */ | |
140d75d7 | 128 | const char *name; |
168d63e5 | 129 | |
130 | /* Pointer into name at the current position. */ | |
140d75d7 | 131 | const char *next; |
168d63e5 | 132 | |
133 | /* Stack for strings containing demangled result generated so far. | |
134 | Text is emitted to the topmost (first) string. */ | |
135 | string_list_t result; | |
136 | ||
137 | /* The number of presently available substitutions. */ | |
138 | int num_substitutions; | |
139 | ||
140 | /* The allocated size of the substitutions array. */ | |
141 | int substitutions_allocated; | |
142 | ||
143 | /* An array of available substitutions. The number of elements in | |
144 | the array is given by num_substitions, and the allocated array | |
145 | size in substitutions_size. | |
146 | ||
147 | The most recent substition is at the end, so | |
148 | ||
149 | - `S_' corresponds to substititutions[num_substitutions - 1] | |
150 | - `S0_' corresponds to substititutions[num_substitutions - 2] | |
151 | ||
152 | etc. */ | |
153 | struct substitution_def *substitutions; | |
154 | ||
155 | /* The stack of template argument lists. */ | |
156 | template_arg_list_t template_arg_lists; | |
157 | ||
158 | /* The most recently demangled source-name. */ | |
159 | dyn_string_t last_source_name; | |
160 | }; | |
161 | ||
162 | typedef struct demangling_def *demangling_t; | |
163 | ||
164 | /* This type is the standard return code from most functions. Values | |
165 | other than STATUS_OK contain descriptive messages. */ | |
166 | typedef const char *status_t; | |
167 | ||
168 | /* Special values that can be used as a status_t. */ | |
140d75d7 | 169 | #define STATUS_OK NULL |
170 | #define STATUS_ERROR "Error." | |
171 | #define STATUS_UNIMPLEMENTED "Unimplemented." | |
172 | #define STATUS_INTERNAL_ERROR "Internal error." | |
173 | ||
174 | /* This status code indicates a failure in malloc or realloc. */ | |
175 | static const char* const status_allocation_failed = "Allocation failed."; | |
176 | #define STATUS_ALLOCATION_FAILED status_allocation_failed | |
177 | ||
178 | /* Non-zero if STATUS indicates that no error has occurred. */ | |
179 | #define STATUS_NO_ERROR(STATUS) ((STATUS) == STATUS_OK) | |
180 | ||
181 | /* Evaluate EXPR, which must produce a status_t. If the status code | |
182 | indicates an error, return from the current function with that | |
183 | status code. */ | |
184 | #define RETURN_IF_ERROR(EXPR) \ | |
185 | do \ | |
186 | { \ | |
187 | status_t s = EXPR; \ | |
188 | if (!STATUS_NO_ERROR (s)) \ | |
189 | return s; \ | |
190 | } \ | |
191 | while (0) | |
168d63e5 | 192 | |
140d75d7 | 193 | static status_t int_to_dyn_string |
168d63e5 | 194 | PARAMS ((int, dyn_string_t)); |
195 | static string_list_t string_list_new | |
196 | PARAMS ((int)); | |
197 | static void string_list_delete | |
198 | PARAMS ((string_list_t)); | |
c1b316c0 | 199 | static status_t result_add_separated_char |
200 | PARAMS ((demangling_t, char)); | |
140d75d7 | 201 | static status_t result_push |
168d63e5 | 202 | PARAMS ((demangling_t)); |
203 | static string_list_t result_pop | |
204 | PARAMS ((demangling_t)); | |
205 | static int substitution_start | |
206 | PARAMS ((demangling_t)); | |
140d75d7 | 207 | static status_t substitution_add |
168d63e5 | 208 | PARAMS ((demangling_t, int, int, int)); |
209 | static dyn_string_t substitution_get | |
210 | PARAMS ((demangling_t, int, int *)); | |
211 | #ifdef CP_DEMANGLE_DEBUG | |
212 | static void substitutions_print | |
213 | PARAMS ((demangling_t, FILE *)); | |
214 | #endif | |
215 | static template_arg_list_t template_arg_list_new | |
216 | PARAMS ((void)); | |
217 | static void template_arg_list_delete | |
218 | PARAMS ((template_arg_list_t)); | |
219 | static void template_arg_list_add_arg | |
220 | PARAMS ((template_arg_list_t, string_list_t)); | |
221 | static string_list_t template_arg_list_get_arg | |
222 | PARAMS ((template_arg_list_t, int)); | |
223 | static void push_template_arg_list | |
224 | PARAMS ((demangling_t, template_arg_list_t)); | |
225 | static void pop_to_template_arg_list | |
226 | PARAMS ((demangling_t, template_arg_list_t)); | |
227 | #ifdef CP_DEMANGLE_DEBUG | |
228 | static void template_arg_list_print | |
229 | PARAMS ((template_arg_list_t, FILE *)); | |
230 | #endif | |
231 | static template_arg_list_t current_template_arg_list | |
232 | PARAMS ((demangling_t)); | |
233 | static demangling_t demangling_new | |
140d75d7 | 234 | PARAMS ((const char *)); |
168d63e5 | 235 | static void demangling_delete |
236 | PARAMS ((demangling_t)); | |
237 | ||
238 | /* The last character of DS. Warning: DS is evaluated twice. */ | |
239 | #define dyn_string_last_char(DS) \ | |
240 | (dyn_string_buf (DS)[dyn_string_length (DS) - 1]) | |
241 | ||
242 | /* Append a space character (` ') to DS if it does not already end | |
140d75d7 | 243 | with one. Evaluates to 1 on success, or 0 on allocation failure. */ |
168d63e5 | 244 | #define dyn_string_append_space(DS) \ |
140d75d7 | 245 | ((dyn_string_length (DS) > 0 \ |
246 | && dyn_string_last_char (DS) != ' ') \ | |
247 | ? dyn_string_append_char ((DS), ' ') \ | |
248 | : 1) | |
168d63e5 | 249 | |
250 | /* Returns the index of the current position in the mangled name. */ | |
251 | #define current_position(DM) ((DM)->next - (DM)->name) | |
252 | ||
253 | /* Returns the character at the current position of the mangled name. */ | |
254 | #define peek_char(DM) (*((DM)->next)) | |
255 | ||
256 | /* Returns the character one past the current position of the mangled | |
257 | name. */ | |
258 | #define peek_char_next(DM) \ | |
259 | (peek_char (DM) == '\0' ? '\0' : (*((DM)->next + 1))) | |
260 | ||
261 | /* Returns the character at the current position, and advances the | |
262 | current position to the next character. */ | |
263 | #define next_char(DM) (*((DM)->next)++) | |
264 | ||
265 | /* Returns non-zero if the current position is the end of the mangled | |
266 | name, i.e. one past the last character. */ | |
267 | #define end_of_name_p(DM) (peek_char (DM) == '\0') | |
268 | ||
269 | /* Advances the current position by one character. */ | |
270 | #define advance_char(DM) (++(DM)->next) | |
271 | ||
272 | /* Returns the string containing the current demangled result. */ | |
273 | #define result_string(DM) (&(DM)->result->string) | |
274 | ||
275 | /* Appends a dyn_string_t to the demangled result. */ | |
276 | #define result_append_string(DM, STRING) \ | |
140d75d7 | 277 | (dyn_string_append (&(DM)->result->string, (STRING)) \ |
278 | ? STATUS_OK : STATUS_ALLOCATION_FAILED) | |
168d63e5 | 279 | |
280 | /* Appends NUL-terminated string CSTR to the demangled result. */ | |
281 | #define result_append(DM, CSTR) \ | |
140d75d7 | 282 | (dyn_string_append_cstr (&(DM)->result->string, (CSTR)) \ |
283 | ? STATUS_OK : STATUS_ALLOCATION_FAILED) | |
168d63e5 | 284 | |
285 | /* Appends character CHAR to the demangled result. */ | |
286 | #define result_append_char(DM, CHAR) \ | |
140d75d7 | 287 | (dyn_string_append_char (&(DM)->result->string, (CHAR)) \ |
288 | ? STATUS_OK : STATUS_ALLOCATION_FAILED) | |
168d63e5 | 289 | |
290 | /* The length of the current demangled result. */ | |
291 | #define result_length(DM) \ | |
292 | dyn_string_length (&(DM)->result->string) | |
293 | ||
294 | /* Appends a space to the demangled result if the last character is | |
295 | not a space. */ | |
296 | #define result_append_space(DM) \ | |
140d75d7 | 297 | (dyn_string_append_space (&(DM)->result->string) \ |
298 | ? STATUS_OK : STATUS_ALLOCATION_FAILED) | |
168d63e5 | 299 | |
c1b316c0 | 300 | /* Appends a (less-than, greater-than) character to the result in DM |
301 | to (open, close) a template argument or parameter list. Appends a | |
302 | space first if necessary to prevent spurious elision of angle | |
303 | brackets with the previous character. */ | |
304 | #define result_open_template_list(DM) result_add_separated_char(DM, '<') | |
305 | #define result_close_template_list(DM) result_add_separated_char(DM, '>') | |
306 | ||
140d75d7 | 307 | /* Appends a base 10 representation of VALUE to DS. STATUS_OK on |
308 | success. On failure, deletes DS and returns an error code. */ | |
168d63e5 | 309 | |
140d75d7 | 310 | static status_t |
168d63e5 | 311 | int_to_dyn_string (value, ds) |
312 | int value; | |
313 | dyn_string_t ds; | |
314 | { | |
315 | int i; | |
316 | int mask = 1; | |
317 | ||
318 | /* Handle zero up front. */ | |
319 | if (value == 0) | |
320 | { | |
140d75d7 | 321 | if (!dyn_string_append_char (ds, '0')) |
322 | return STATUS_ALLOCATION_FAILED; | |
323 | return STATUS_OK; | |
168d63e5 | 324 | } |
325 | ||
326 | /* For negative numbers, emit a minus sign. */ | |
327 | if (value < 0) | |
328 | { | |
140d75d7 | 329 | if (!dyn_string_append_char (ds, '-')) |
330 | return STATUS_ALLOCATION_FAILED; | |
168d63e5 | 331 | value = -value; |
332 | } | |
333 | ||
334 | /* Find the power of 10 of the first digit. */ | |
335 | i = value; | |
336 | while (i > 9) | |
337 | { | |
338 | mask *= 10; | |
339 | i /= 10; | |
340 | } | |
341 | ||
342 | /* Write the digits. */ | |
343 | while (mask > 0) | |
344 | { | |
345 | int digit = value / mask; | |
140d75d7 | 346 | |
347 | if (!dyn_string_append_char (ds, '0' + digit)) | |
348 | return STATUS_ALLOCATION_FAILED; | |
349 | ||
168d63e5 | 350 | value -= digit * mask; |
351 | mask /= 10; | |
352 | } | |
140d75d7 | 353 | |
354 | return STATUS_OK; | |
168d63e5 | 355 | } |
356 | ||
357 | /* Creates a new string list node. The contents of the string are | |
358 | empty, but the initial buffer allocation is LENGTH. The string | |
140d75d7 | 359 | list node should be deleted with string_list_delete. Returns NULL |
360 | if allocation fails. */ | |
168d63e5 | 361 | |
362 | static string_list_t | |
363 | string_list_new (length) | |
364 | int length; | |
365 | { | |
140d75d7 | 366 | string_list_t s = (string_list_t) malloc (sizeof (struct string_list_def)); |
367 | if (s == NULL) | |
368 | return NULL; | |
369 | if (!dyn_string_init ((dyn_string_t) s, length)) | |
370 | return NULL; | |
168d63e5 | 371 | return s; |
372 | } | |
373 | ||
374 | /* Deletes the entire string list starting at NODE. */ | |
375 | ||
376 | static void | |
377 | string_list_delete (node) | |
378 | string_list_t node; | |
379 | { | |
380 | while (node != NULL) | |
381 | { | |
382 | string_list_t next = node->next; | |
383 | free (node); | |
384 | node = next; | |
385 | } | |
386 | } | |
387 | ||
c1b316c0 | 388 | /* Appends CHARACTER to the demangled result. If the current trailing |
389 | character of the result is CHARACTER, a space is inserted first. */ | |
168d63e5 | 390 | |
140d75d7 | 391 | static status_t |
c1b316c0 | 392 | result_add_separated_char (dm, character) |
168d63e5 | 393 | demangling_t dm; |
c1b316c0 | 394 | char character; |
168d63e5 | 395 | { |
396 | dyn_string_t s = &dm->result->string; | |
140d75d7 | 397 | |
398 | /* Add a space if the last character is already a closing angle | |
399 | bracket, so that a nested template arg list doesn't look like | |
400 | it's closed with a right-shift operator. */ | |
c1b316c0 | 401 | if (dyn_string_last_char (s) == character) |
140d75d7 | 402 | { |
403 | if (!dyn_string_append_char (s, ' ')) | |
404 | return STATUS_ALLOCATION_FAILED; | |
405 | } | |
406 | ||
407 | /* Add closing angle brackets. */ | |
c1b316c0 | 408 | if (!dyn_string_append_char (s, character)) |
140d75d7 | 409 | return STATUS_ALLOCATION_FAILED; |
410 | ||
411 | return STATUS_OK; | |
168d63e5 | 412 | } |
413 | ||
414 | /* Allocates and pushes a new string onto the demangled results stack | |
140d75d7 | 415 | for DM. Subsequent demangling with DM will emit to the new string. |
416 | Returns STATUS_OK on success, STATUS_ALLOCATION_FAILED on | |
417 | allocation failure. */ | |
168d63e5 | 418 | |
140d75d7 | 419 | static status_t |
168d63e5 | 420 | result_push (dm) |
421 | demangling_t dm; | |
422 | { | |
423 | string_list_t new_string = string_list_new (0); | |
140d75d7 | 424 | if (new_string == NULL) |
425 | /* Allocation failed. */ | |
426 | return STATUS_ALLOCATION_FAILED; | |
427 | ||
428 | /* Link the new string to the front of the list of result strings. */ | |
168d63e5 | 429 | new_string->next = (string_list_t) dm->result; |
430 | dm->result = new_string; | |
140d75d7 | 431 | return STATUS_OK; |
168d63e5 | 432 | } |
433 | ||
434 | /* Removes and returns the topmost element on the demangled results | |
435 | stack for DM. The caller assumes ownership for the returned | |
436 | string. */ | |
437 | ||
438 | static string_list_t | |
439 | result_pop (dm) | |
440 | demangling_t dm; | |
441 | { | |
442 | string_list_t top = dm->result; | |
443 | dm->result = top->next; | |
444 | return top; | |
445 | } | |
446 | ||
447 | /* Returns the start position of a fragment of the demangled result | |
448 | that will be a substitution candidate. Should be called at the | |
449 | start of productions that can add substitutions. */ | |
450 | ||
451 | static int | |
452 | substitution_start (dm) | |
453 | demangling_t dm; | |
454 | { | |
455 | return result_length (dm); | |
456 | } | |
457 | ||
458 | /* Adds the suffix of the current demangled result of DM starting at | |
459 | START_POSITION as a potential substitution. If TEMPLATE_P is | |
460 | non-zero, this potential substitution is a template-id. | |
461 | ||
462 | If TEMPLATE_PARM_NUMBER is not NOT_TEMPLATE_PARM, the substitution | |
463 | is for that particular <template-param>, and is distinct from other | |
464 | otherwise-identical types and other <template-param>s with | |
465 | different indices. */ | |
466 | ||
140d75d7 | 467 | static status_t |
168d63e5 | 468 | substitution_add (dm, start_position, template_p, template_parm_number) |
469 | demangling_t dm; | |
470 | int start_position; | |
471 | int template_p; | |
472 | int template_parm_number; | |
473 | { | |
474 | dyn_string_t result = result_string (dm); | |
475 | dyn_string_t substitution = dyn_string_new (0); | |
476 | int i; | |
477 | ||
140d75d7 | 478 | if (substitution == NULL) |
479 | return STATUS_ALLOCATION_FAILED; | |
480 | ||
481 | /* Extract the substring of the current demangling result that | |
482 | represents the subsitution candidate. */ | |
483 | if (!dyn_string_substring (substitution, | |
484 | result, start_position, result_length (dm))) | |
485 | { | |
486 | dyn_string_delete (substitution); | |
487 | return STATUS_ALLOCATION_FAILED; | |
488 | } | |
168d63e5 | 489 | |
490 | /* Check whether SUBSTITUTION already occurs. */ | |
491 | for (i = 0; i < dm->num_substitutions; ++i) | |
492 | if (dyn_string_eq (dm->substitutions[i].text, substitution) | |
493 | && dm->substitutions[i].template_parm_number == template_parm_number) | |
494 | /* Found SUBSTITUTION already present. */ | |
495 | { | |
496 | /* Callers expect this function to take ownership of | |
497 | SUBSTITUTION, so delete it. */ | |
498 | dyn_string_delete (substitution); | |
140d75d7 | 499 | return STATUS_OK; |
168d63e5 | 500 | } |
501 | ||
502 | /* If there's no room for the new entry, grow the array. */ | |
503 | if (dm->substitutions_allocated == dm->num_substitutions) | |
504 | { | |
140d75d7 | 505 | size_t new_array_size; |
168d63e5 | 506 | dm->substitutions_allocated *= 2; |
140d75d7 | 507 | new_array_size = |
508 | sizeof (struct substitution_def) * dm->substitutions_allocated; | |
509 | ||
510 | dm->substitutions = (struct substitution_def *) | |
511 | realloc (dm->substitutions, new_array_size); | |
512 | if (dm->substitutions == NULL) | |
513 | /* Realloc failed. */ | |
514 | { | |
515 | dyn_string_delete (substitution); | |
516 | return STATUS_ALLOCATION_FAILED; | |
517 | } | |
168d63e5 | 518 | } |
519 | ||
520 | /* Add the substitution to the array. */ | |
521 | dm->substitutions[i].text = substitution; | |
522 | dm->substitutions[i].template_p = template_p; | |
523 | dm->substitutions[i].template_parm_number = template_parm_number; | |
524 | ++dm->num_substitutions; | |
525 | ||
526 | #ifdef CP_DEMANGLE_DEBUG | |
527 | substitutions_print (dm, stderr); | |
528 | #endif | |
140d75d7 | 529 | |
530 | return STATUS_OK; | |
168d63e5 | 531 | } |
532 | ||
533 | /* Returns the Nth-most-recent substitution. Sets *TEMPLATE_P to | |
534 | non-zero if the substitution is a template-id, zero otherwise. | |
535 | N is numbered from zero. DM retains ownership of the returned | |
536 | string. If N is negative, or equal to or greater than the current | |
537 | number of substitution candidates, returns NULL. */ | |
538 | ||
539 | static dyn_string_t | |
540 | substitution_get (dm, n, template_p) | |
541 | demangling_t dm; | |
542 | int n; | |
543 | int *template_p; | |
544 | { | |
545 | struct substitution_def *sub; | |
546 | ||
547 | /* Make sure N is in the valid range. */ | |
548 | if (n < 0 || n >= dm->num_substitutions) | |
549 | return NULL; | |
550 | ||
551 | sub = &(dm->substitutions[n]); | |
552 | *template_p = sub->template_p; | |
553 | return sub->text; | |
554 | } | |
555 | ||
556 | #ifdef CP_DEMANGLE_DEBUG | |
557 | /* Debugging routine to print the current substitutions to FP. */ | |
558 | ||
559 | static void | |
560 | substitutions_print (dm, fp) | |
561 | demangling_t dm; | |
562 | FILE *fp; | |
563 | { | |
564 | int seq_id; | |
565 | int num = dm->num_substitutions; | |
566 | ||
567 | fprintf (fp, "SUBSTITUTIONS:\n"); | |
568 | for (seq_id = -1; seq_id < num - 1; ++seq_id) | |
569 | { | |
570 | int template_p; | |
571 | dyn_string_t text = substitution_get (dm, seq_id + 1, &template_p); | |
572 | ||
573 | if (seq_id == -1) | |
574 | fprintf (fp, " S_ "); | |
575 | else | |
576 | fprintf (fp, " S%d_", seq_id); | |
577 | fprintf (fp, " %c: %s\n", template_p ? '*' : ' ', dyn_string_buf (text)); | |
578 | } | |
579 | } | |
580 | ||
581 | #endif /* CP_DEMANGLE_DEBUG */ | |
582 | ||
140d75d7 | 583 | /* Creates a new template argument list. Returns NULL if allocation |
584 | fails. */ | |
168d63e5 | 585 | |
586 | static template_arg_list_t | |
0b4450c1 | 587 | template_arg_list_new () |
168d63e5 | 588 | { |
140d75d7 | 589 | template_arg_list_t new_list = |
590 | (template_arg_list_t) malloc (sizeof (struct template_arg_list_def)); | |
591 | if (new_list == NULL) | |
592 | return NULL; | |
168d63e5 | 593 | /* Initialize the new list to have no arguments. */ |
594 | new_list->first_argument = NULL; | |
595 | new_list->last_argument = NULL; | |
596 | /* Return the new list. */ | |
597 | return new_list; | |
598 | } | |
599 | ||
600 | /* Deletes a template argument list and the template arguments it | |
601 | contains. */ | |
602 | ||
603 | static void | |
604 | template_arg_list_delete (list) | |
605 | template_arg_list_t list; | |
606 | { | |
607 | /* If there are any arguments on LIST, delete them. */ | |
608 | if (list->first_argument != NULL) | |
609 | string_list_delete (list->first_argument); | |
610 | /* Delete LIST. */ | |
611 | free (list); | |
612 | } | |
613 | ||
614 | /* Adds ARG to the template argument list ARG_LIST. */ | |
615 | ||
616 | static void | |
617 | template_arg_list_add_arg (arg_list, arg) | |
618 | template_arg_list_t arg_list; | |
619 | string_list_t arg; | |
620 | { | |
621 | if (arg_list->first_argument == NULL) | |
622 | /* If there were no arguments before, ARG is the first one. */ | |
623 | arg_list->first_argument = arg; | |
624 | else | |
625 | /* Make ARG the last argument on the list. */ | |
626 | arg_list->last_argument->next = arg; | |
627 | /* Make ARG the last on the list. */ | |
628 | arg_list->last_argument = arg; | |
629 | arg->next = NULL; | |
630 | } | |
631 | ||
632 | /* Returns the template arugment at position INDEX in template | |
633 | argument list ARG_LIST. */ | |
634 | ||
635 | static string_list_t | |
636 | template_arg_list_get_arg (arg_list, index) | |
637 | template_arg_list_t arg_list; | |
638 | int index; | |
639 | { | |
640 | string_list_t arg = arg_list->first_argument; | |
641 | /* Scan down the list of arguments to find the one at position | |
642 | INDEX. */ | |
643 | while (index--) | |
644 | { | |
645 | arg = arg->next; | |
646 | if (arg == NULL) | |
647 | /* Ran out of arguments before INDEX hit zero. That's an | |
648 | error. */ | |
649 | return NULL; | |
650 | } | |
651 | /* Return the argument at position INDEX. */ | |
652 | return arg; | |
653 | } | |
654 | ||
655 | /* Pushes ARG_LIST onto the top of the template argument list stack. */ | |
656 | ||
657 | static void | |
658 | push_template_arg_list (dm, arg_list) | |
659 | demangling_t dm; | |
660 | template_arg_list_t arg_list; | |
661 | { | |
662 | arg_list->next = dm->template_arg_lists; | |
663 | dm->template_arg_lists = arg_list; | |
664 | #ifdef CP_DEMANGLE_DEBUG | |
665 | fprintf (stderr, " ** pushing template arg list\n"); | |
666 | template_arg_list_print (arg_list, stderr); | |
667 | #endif | |
668 | } | |
669 | ||
670 | /* Pops and deletes elements on the template argument list stack until | |
671 | arg_list is the topmost element. If arg_list is NULL, all elements | |
672 | are popped and deleted. */ | |
673 | ||
674 | static void | |
675 | pop_to_template_arg_list (dm, arg_list) | |
676 | demangling_t dm; | |
677 | template_arg_list_t arg_list; | |
678 | { | |
679 | while (dm->template_arg_lists != arg_list) | |
680 | { | |
681 | template_arg_list_t top = dm->template_arg_lists; | |
682 | /* Disconnect the topmost element from the list. */ | |
683 | dm->template_arg_lists = top->next; | |
684 | /* Delete the popped element. */ | |
685 | template_arg_list_delete (top); | |
686 | #ifdef CP_DEMANGLE_DEBUG | |
687 | fprintf (stderr, " ** removing template arg list\n"); | |
688 | #endif | |
689 | } | |
690 | } | |
691 | ||
692 | #ifdef CP_DEMANGLE_DEBUG | |
693 | ||
694 | /* Prints the contents of ARG_LIST to FP. */ | |
695 | ||
696 | static void | |
697 | template_arg_list_print (arg_list, fp) | |
698 | template_arg_list_t arg_list; | |
699 | FILE *fp; | |
700 | { | |
701 | string_list_t arg; | |
702 | int index = -1; | |
703 | ||
704 | fprintf (fp, "TEMPLATE ARGUMENT LIST:\n"); | |
705 | for (arg = arg_list->first_argument; arg != NULL; arg = arg->next) | |
706 | { | |
707 | if (index == -1) | |
708 | fprintf (fp, " T_ : "); | |
709 | else | |
710 | fprintf (fp, " T%d_ : ", index); | |
711 | ++index; | |
712 | fprintf (fp, "%s\n", dyn_string_buf ((dyn_string_t) arg)); | |
713 | } | |
714 | } | |
715 | ||
716 | #endif /* CP_DEMANGLE_DEBUG */ | |
717 | ||
718 | /* Returns the topmost element on the stack of template argument | |
719 | lists. If there is no list of template arguments, returns NULL. */ | |
720 | ||
721 | static template_arg_list_t | |
722 | current_template_arg_list (dm) | |
723 | demangling_t dm; | |
724 | { | |
725 | return dm->template_arg_lists; | |
726 | } | |
727 | ||
728 | /* Allocates a demangling_t object for demangling mangled NAME. A new | |
140d75d7 | 729 | result must be pushed before the returned object can be used. |
730 | Returns NULL if allocation fails. */ | |
168d63e5 | 731 | |
732 | static demangling_t | |
733 | demangling_new (name) | |
140d75d7 | 734 | const char *name; |
168d63e5 | 735 | { |
140d75d7 | 736 | demangling_t dm; |
737 | dm = (demangling_t) malloc (sizeof (struct demangling_def)); | |
738 | if (dm == NULL) | |
739 | return NULL; | |
168d63e5 | 740 | |
741 | dm->name = name; | |
742 | dm->next = name; | |
743 | dm->result = NULL; | |
168d63e5 | 744 | dm->num_substitutions = 0; |
745 | dm->substitutions_allocated = 10; | |
168d63e5 | 746 | dm->template_arg_lists = NULL; |
140d75d7 | 747 | dm->last_source_name = dyn_string_new (0); |
748 | if (dm->last_source_name == NULL) | |
749 | return NULL; | |
750 | dm->substitutions = (struct substitution_def *) | |
751 | malloc (dm->substitutions_allocated * sizeof (struct substitution_def)); | |
752 | if (dm->substitutions == NULL) | |
753 | { | |
754 | dyn_string_delete (dm->last_source_name); | |
755 | return NULL; | |
756 | } | |
168d63e5 | 757 | |
758 | return dm; | |
759 | } | |
760 | ||
761 | /* Deallocates a demangling_t object and all memory associated with | |
762 | it. */ | |
763 | ||
764 | static void | |
765 | demangling_delete (dm) | |
766 | demangling_t dm; | |
767 | { | |
768 | int i; | |
769 | template_arg_list_t arg_list = dm->template_arg_lists; | |
770 | ||
771 | /* Delete the stack of template argument lists. */ | |
772 | while (arg_list != NULL) | |
773 | { | |
774 | template_arg_list_t next = arg_list->next; | |
775 | template_arg_list_delete (arg_list); | |
776 | arg_list = next; | |
777 | } | |
778 | /* Delete the list of substitutions. */ | |
779 | for (i = dm->num_substitutions; --i >= 0; ) | |
780 | dyn_string_delete (dm->substitutions[i].text); | |
781 | free (dm->substitutions); | |
782 | /* Delete the demangled result. */ | |
783 | string_list_delete (dm->result); | |
784 | /* Delete the stored identifier name. */ | |
785 | dyn_string_delete (dm->last_source_name); | |
786 | /* Delete the context object itself. */ | |
787 | free (dm); | |
788 | } | |
789 | ||
790 | /* These functions demangle an alternative of the corresponding | |
791 | production in the mangling spec. The first argument of each is a | |
792 | demangling context structure for the current demangling | |
793 | operation. Most emit demangled text directly to the topmost result | |
794 | string on the result string stack in the demangling context | |
795 | structure. */ | |
796 | ||
797 | static status_t demangle_char | |
da8bd873 | 798 | PARAMS ((demangling_t, int)); |
168d63e5 | 799 | static status_t demangle_mangled_name |
800 | PARAMS ((demangling_t)); | |
801 | static status_t demangle_encoding | |
802 | PARAMS ((demangling_t)); | |
803 | static status_t demangle_name | |
804 | PARAMS ((demangling_t, int *)); | |
805 | static status_t demangle_nested_name | |
806 | PARAMS ((demangling_t, int *)); | |
807 | static status_t demangle_prefix | |
808 | PARAMS ((demangling_t, int *)); | |
809 | static status_t demangle_unqualified_name | |
810 | PARAMS ((demangling_t)); | |
811 | static status_t demangle_source_name | |
812 | PARAMS ((demangling_t)); | |
813 | static status_t demangle_number | |
814 | PARAMS ((demangling_t, int *, int, int)); | |
815 | static status_t demangle_number_literally | |
816 | PARAMS ((demangling_t, dyn_string_t, int, int)); | |
817 | static status_t demangle_identifier | |
818 | PARAMS ((demangling_t, int, dyn_string_t)); | |
819 | static status_t demangle_operator_name | |
820 | PARAMS ((demangling_t, int, int *)); | |
821 | static status_t demangle_special_name | |
822 | PARAMS ((demangling_t)); | |
823 | static status_t demangle_ctor_dtor_name | |
824 | PARAMS ((demangling_t)); | |
825 | static status_t demangle_type_ptr | |
826 | PARAMS ((demangling_t)); | |
827 | static status_t demangle_type | |
828 | PARAMS ((demangling_t)); | |
829 | static status_t demangle_CV_qualifiers | |
830 | PARAMS ((demangling_t, dyn_string_t)); | |
831 | static status_t demangle_builtin_type | |
832 | PARAMS ((demangling_t)); | |
833 | static status_t demangle_function_type | |
834 | PARAMS ((demangling_t, int)); | |
835 | static status_t demangle_bare_function_type | |
836 | PARAMS ((demangling_t, int)); | |
837 | static status_t demangle_class_enum_type | |
838 | PARAMS ((demangling_t, int *)); | |
839 | static status_t demangle_array_type | |
840 | PARAMS ((demangling_t)); | |
841 | static status_t demangle_template_param | |
842 | PARAMS ((demangling_t, int *)); | |
843 | static status_t demangle_template_args | |
844 | PARAMS ((demangling_t)); | |
845 | static status_t demangle_literal | |
846 | PARAMS ((demangling_t)); | |
847 | static status_t demangle_template_arg | |
848 | PARAMS ((demangling_t)); | |
849 | static status_t demangle_expression | |
da8bd873 | 850 | PARAMS ((demangling_t)); |
168d63e5 | 851 | static status_t demangle_scope_expression |
852 | PARAMS ((demangling_t)); | |
853 | static status_t demangle_expr_primary | |
da8bd873 | 854 | PARAMS ((demangling_t)); |
168d63e5 | 855 | static status_t demangle_substitution |
856 | PARAMS ((demangling_t, int *, int *)); | |
857 | static status_t demangle_local_name | |
858 | PARAMS ((demangling_t)); | |
859 | static status_t demangle_discriminator | |
860 | PARAMS ((demangling_t, int)); | |
4b7bc488 | 861 | static status_t cp_demangle |
140d75d7 | 862 | PARAMS ((const char *, dyn_string_t)); |
bb37062f | 863 | #ifdef IN_LIBGCC2 |
140d75d7 | 864 | static status_t cp_demangle_type |
865 | PARAMS ((const char*, dyn_string_t)); | |
bb37062f | 866 | #endif |
168d63e5 | 867 | |
868 | /* When passed to demangle_bare_function_type, indicates that the | |
869 | function's return type is not encoded before its parameter types. */ | |
870 | #define BFT_NO_RETURN_TYPE -1 | |
871 | ||
872 | /* Check that the next character is C. If so, consume it. If not, | |
873 | return an error. */ | |
874 | ||
875 | static status_t | |
876 | demangle_char (dm, c) | |
877 | demangling_t dm; | |
da8bd873 | 878 | int c; |
168d63e5 | 879 | { |
880 | static char *error_message = NULL; | |
881 | ||
882 | if (peek_char (dm) == c) | |
883 | { | |
884 | advance_char (dm); | |
885 | return STATUS_OK; | |
886 | } | |
887 | else | |
888 | { | |
889 | if (error_message == NULL) | |
890 | error_message = strdup ("Expected ?"); | |
891 | error_message[9] = c; | |
892 | return error_message; | |
893 | } | |
894 | } | |
895 | ||
896 | /* Demangles and emits a <mangled-name>. | |
897 | ||
898 | <mangled-name> ::= _Z <encoding> */ | |
899 | ||
900 | static status_t | |
901 | demangle_mangled_name (dm) | |
902 | demangling_t dm; | |
903 | { | |
904 | DEMANGLE_TRACE ("mangled-name", dm); | |
905 | RETURN_IF_ERROR (demangle_char (dm, '_')); | |
906 | RETURN_IF_ERROR (demangle_char (dm, 'Z')); | |
907 | RETURN_IF_ERROR (demangle_encoding (dm)); | |
908 | return STATUS_OK; | |
909 | } | |
910 | ||
911 | /* Demangles and emits an <encoding>. | |
912 | ||
913 | <encoding> ::= <function name> <bare-function-type> | |
914 | ::= <data name> | |
b7f68aff | 915 | ::= <special-name> */ |
168d63e5 | 916 | |
917 | static status_t | |
918 | demangle_encoding (dm) | |
919 | demangling_t dm; | |
920 | { | |
921 | int template_p; | |
168d63e5 | 922 | int start_position; |
168d63e5 | 923 | template_arg_list_t old_arg_list = current_template_arg_list (dm); |
924 | char peek = peek_char (dm); | |
925 | ||
926 | DEMANGLE_TRACE ("encoding", dm); | |
927 | ||
928 | /* Remember where the name starts. If it turns out to be a template | |
929 | function, we'll have to insert the return type here. */ | |
930 | start_position = result_length (dm); | |
931 | ||
b7f68aff | 932 | if (peek == 'G' || peek == 'T') |
168d63e5 | 933 | RETURN_IF_ERROR (demangle_special_name (dm)); |
934 | else | |
935 | { | |
936 | /* Now demangle the name. */ | |
937 | RETURN_IF_ERROR (demangle_name (dm, &template_p)); | |
938 | ||
939 | /* If there's anything left, the name was a function name, with | |
940 | maybe its return type, and its parameters types, following. */ | |
941 | if (!end_of_name_p (dm) | |
942 | && peek_char (dm) != 'E') | |
943 | { | |
944 | if (template_p) | |
945 | /* Template functions have their return type encoded. The | |
946 | return type should be inserted at start_position. */ | |
947 | RETURN_IF_ERROR | |
948 | (demangle_bare_function_type (dm, start_position)); | |
949 | else | |
950 | /* Non-template functions don't have their return type | |
951 | encoded. */ | |
952 | RETURN_IF_ERROR | |
953 | (demangle_bare_function_type (dm, BFT_NO_RETURN_TYPE)); | |
954 | } | |
168d63e5 | 955 | } |
956 | ||
957 | /* Pop off template argument lists that were built during the | |
958 | mangling of this name, to restore the old template context. */ | |
959 | pop_to_template_arg_list (dm, old_arg_list); | |
960 | ||
961 | return STATUS_OK; | |
962 | } | |
963 | ||
964 | /* Demangles and emits a <name>. | |
965 | ||
966 | <name> ::= <unscoped-name> | |
967 | ::= <unscoped-template-name> <template-args> | |
968 | ::= <nested-name> | |
969 | ::= <local-name> | |
970 | ||
971 | <unscoped-name> ::= <unqualified-name> | |
972 | ::= St <unqualified-name> # ::std:: | |
973 | ||
974 | <unscoped-template-name> | |
975 | ::= <unscoped-name> | |
976 | ::= <substitution> */ | |
977 | ||
978 | static status_t | |
979 | demangle_name (dm, template_p) | |
980 | demangling_t dm; | |
981 | int *template_p; | |
982 | { | |
983 | int special_std_substitution; | |
984 | int start = substitution_start (dm); | |
985 | ||
986 | DEMANGLE_TRACE ("name", dm); | |
987 | ||
988 | switch (peek_char (dm)) | |
989 | { | |
990 | case 'N': | |
991 | /* This is a <nested-name>. */ | |
992 | RETURN_IF_ERROR (demangle_nested_name (dm, template_p)); | |
993 | break; | |
994 | ||
995 | case 'Z': | |
996 | RETURN_IF_ERROR (demangle_local_name (dm)); | |
997 | break; | |
998 | ||
999 | case 'S': | |
1000 | /* The `St' substitution allows a name nested in std:: to appear | |
b7f68aff | 1001 | without being enclosed in a nested name. */ |
168d63e5 | 1002 | if (peek_char_next (dm) == 't') |
1003 | { | |
1004 | (void) next_char (dm); | |
1005 | (void) next_char (dm); | |
140d75d7 | 1006 | RETURN_IF_ERROR (result_append (dm, "std::")); |
168d63e5 | 1007 | RETURN_IF_ERROR (demangle_unqualified_name (dm)); |
1008 | } | |
1009 | else | |
1010 | { | |
1011 | RETURN_IF_ERROR (demangle_substitution (dm, template_p, | |
1012 | &special_std_substitution)); | |
1013 | if (special_std_substitution) | |
1014 | { | |
1015 | /* This was the magic `std::' substitution. We can have | |
1016 | a <nested-name> or one of the unscoped names | |
1017 | following. */ | |
140d75d7 | 1018 | RETURN_IF_ERROR (result_append (dm, "::")); |
168d63e5 | 1019 | RETURN_IF_ERROR (demangle_name (dm, template_p)); |
1020 | } | |
1021 | } | |
b7f68aff | 1022 | /* Check if a template argument list immediately follows. |
1023 | If so, then we just demangled an <unqualified-template-name>. */ | |
1024 | if (peek_char (dm) == 'I') | |
1025 | { | |
1026 | RETURN_IF_ERROR (substitution_add (dm, start, 0, | |
1027 | NOT_TEMPLATE_PARM)); | |
1028 | RETURN_IF_ERROR (demangle_template_args (dm)); | |
1029 | } | |
168d63e5 | 1030 | break; |
1031 | ||
1032 | default: | |
1033 | /* This is an <unscoped-name> or <unscoped-template-name>. */ | |
1034 | RETURN_IF_ERROR (demangle_unqualified_name (dm)); | |
1035 | ||
1036 | /* If the <unqualified-name> is followed by template args, this | |
1037 | is an <unscoped-template-name>. */ | |
1038 | if (peek_char (dm) == 'I') | |
1039 | { | |
1040 | /* Add a substitution for the unqualified template name. */ | |
140d75d7 | 1041 | RETURN_IF_ERROR (substitution_add (dm, start, 0, |
1042 | NOT_TEMPLATE_PARM)); | |
168d63e5 | 1043 | |
1044 | RETURN_IF_ERROR (demangle_template_args (dm)); | |
1045 | *template_p = 1; | |
1046 | } | |
1047 | else | |
1048 | *template_p = 0; | |
1049 | ||
1050 | break; | |
1051 | } | |
1052 | ||
1053 | return STATUS_OK; | |
1054 | } | |
1055 | ||
1056 | /* Demangles and emits a <nested-name>. | |
1057 | ||
1058 | <nested-name> ::= N [<CV-qualifiers>] <prefix> <component> E */ | |
1059 | ||
1060 | static status_t | |
1061 | demangle_nested_name (dm, template_p) | |
1062 | demangling_t dm; | |
1063 | int *template_p; | |
1064 | { | |
1065 | char peek; | |
1066 | ||
1067 | DEMANGLE_TRACE ("nested-name", dm); | |
1068 | ||
1069 | RETURN_IF_ERROR (demangle_char (dm, 'N')); | |
1070 | ||
1071 | peek = peek_char (dm); | |
1072 | if (peek == 'r' || peek == 'V' || peek == 'K') | |
1073 | { | |
140d75d7 | 1074 | status_t status; |
1075 | ||
168d63e5 | 1076 | /* Snarf up and emit CV qualifiers. */ |
1077 | dyn_string_t cv_qualifiers = dyn_string_new (24); | |
140d75d7 | 1078 | if (cv_qualifiers == NULL) |
1079 | return STATUS_ALLOCATION_FAILED; | |
1080 | ||
168d63e5 | 1081 | demangle_CV_qualifiers (dm, cv_qualifiers); |
140d75d7 | 1082 | status = result_append_string (dm, cv_qualifiers); |
168d63e5 | 1083 | dyn_string_delete (cv_qualifiers); |
140d75d7 | 1084 | RETURN_IF_ERROR (status); |
1085 | RETURN_IF_ERROR (result_append_space (dm)); | |
168d63e5 | 1086 | } |
1087 | ||
1088 | RETURN_IF_ERROR (demangle_prefix (dm, template_p)); | |
1089 | /* No need to demangle the final <component>; demangle_prefix will | |
1090 | handle it. */ | |
1091 | RETURN_IF_ERROR (demangle_char (dm, 'E')); | |
1092 | ||
1093 | return STATUS_OK; | |
1094 | } | |
1095 | ||
1096 | /* Demangles and emits a <prefix>. | |
1097 | ||
1098 | <prefix> ::= <prefix> <component> | |
1099 | ::= <template-prefix> <template-args> | |
1100 | ::= # empty | |
1101 | ::= <substitution> | |
1102 | ||
1103 | <template-prefix> ::= <prefix> | |
1104 | ::= <substitution> | |
1105 | ||
1106 | <component> ::= <unqualified-name> | |
1107 | ::= <local-name> */ | |
1108 | ||
1109 | static status_t | |
1110 | demangle_prefix (dm, template_p) | |
1111 | demangling_t dm; | |
1112 | int *template_p; | |
1113 | { | |
1114 | int start = substitution_start (dm); | |
1115 | int nested = 0; | |
1116 | ||
c1b316c0 | 1117 | /* This flag is set to non-zero if the most recent (rightmost) |
1118 | element in the prefix was a constructor. */ | |
1119 | int last_was_ctor = 0; | |
1120 | ||
168d63e5 | 1121 | /* TEMPLATE_P is updated as we decend the nesting chain. After |
1122 | <template-args>, it is set to non-zero; after everything else it | |
1123 | is set to zero. */ | |
1124 | ||
1125 | DEMANGLE_TRACE ("prefix", dm); | |
1126 | ||
1127 | while (1) | |
1128 | { | |
1129 | char peek; | |
1130 | int unused; | |
1131 | ||
1132 | if (end_of_name_p (dm)) | |
1133 | return "Unexpected end of name in <compound-name>."; | |
1134 | ||
1135 | peek = peek_char (dm); | |
1136 | ||
c1b316c0 | 1137 | /* We'll initialize last_was_ctor to false, and set it to true |
1138 | if we end up demangling a constructor name. However, make | |
1139 | sure we're not actually about to demangle template arguments | |
1140 | -- if so, this is the <template-args> following a | |
1141 | <template-prefix>, so we'll want the previous flag value | |
1142 | around. */ | |
1143 | if (peek != 'I') | |
1144 | last_was_ctor = 0; | |
1145 | ||
140d75d7 | 1146 | if (IS_DIGIT ((unsigned char) peek) |
168d63e5 | 1147 | || (peek >= 'a' && peek <= 'z') |
1148 | || peek == 'C' || peek == 'D' | |
1149 | || peek == 'S') | |
1150 | { | |
1151 | /* We have another level of scope qualification. */ | |
1152 | if (nested) | |
140d75d7 | 1153 | RETURN_IF_ERROR (result_append (dm, "::")); |
168d63e5 | 1154 | else |
1155 | nested = 1; | |
1156 | ||
1157 | if (peek == 'S') | |
1158 | /* The substitution determines whether this is a | |
c1b316c0 | 1159 | template-id. */ |
168d63e5 | 1160 | RETURN_IF_ERROR (demangle_substitution (dm, template_p, |
1161 | &unused)); | |
1162 | else | |
1163 | { | |
c1b316c0 | 1164 | /* It's just a name. Remember whether it's a |
1165 | constructor. */ | |
168d63e5 | 1166 | RETURN_IF_ERROR (demangle_unqualified_name (dm)); |
1167 | *template_p = 0; | |
1168 | } | |
c1b316c0 | 1169 | |
1170 | /* If this element was a constructor name, make a note of | |
1171 | that. */ | |
1172 | if (peek == 'C') | |
1173 | last_was_ctor = 1; | |
168d63e5 | 1174 | } |
1175 | else if (peek == 'Z') | |
1176 | RETURN_IF_ERROR (demangle_local_name (dm)); | |
1177 | else if (peek == 'I') | |
1178 | { | |
c1b316c0 | 1179 | /* If the template flag is already set, this is the second |
1180 | set of template args in a row. Something is wrong with | |
1181 | the mangled name. */ | |
1182 | if (*template_p) | |
1183 | return "Unexpected second consecutive template args in <prefix>."; | |
168d63e5 | 1184 | /* The template name is a substitution candidate. */ |
140d75d7 | 1185 | RETURN_IF_ERROR (substitution_add (dm, start, 0, NOT_TEMPLATE_PARM)); |
168d63e5 | 1186 | RETURN_IF_ERROR (demangle_template_args (dm)); |
c1b316c0 | 1187 | |
1188 | /* Now we want to indicate to the caller that we've | |
1189 | demangled template arguments, thus the prefix was a | |
1190 | <template-prefix>. That's so that the caller knows to | |
1191 | demangle the function's return type, if this turns out to | |
1192 | be a function name. */ | |
1193 | if (!last_was_ctor) | |
1194 | *template_p = 1; | |
1195 | else | |
1196 | /* But, if it's a member template constructor, report it | |
1197 | as untemplated. We don't ever want to demangle the | |
1198 | return type of a constructor. */ | |
1199 | *template_p = 0; | |
168d63e5 | 1200 | } |
1201 | else if (peek == 'E') | |
1202 | /* All done. */ | |
1203 | return STATUS_OK; | |
1204 | else | |
1205 | return "Unexpected character in <compound-name>."; | |
1206 | ||
1207 | /* Add a new substitution for the prefix thus far. */ | |
140d75d7 | 1208 | RETURN_IF_ERROR (substitution_add (dm, start, *template_p, |
1209 | NOT_TEMPLATE_PARM)); | |
168d63e5 | 1210 | } |
1211 | } | |
1212 | ||
1213 | /* Demangles and emits an <unqualified-name>. If the | |
1214 | <unqualified-name> is a function and the first element in the | |
1215 | argument list should be taken to be its return type, | |
1216 | ENCODE_RETURN_TYPE is non-zero. | |
1217 | ||
1218 | <unqualified-name> ::= <operator-name> | |
1219 | ::= <special-name> | |
1220 | ::= <source-name> */ | |
1221 | ||
1222 | static status_t | |
1223 | demangle_unqualified_name (dm) | |
1224 | demangling_t dm; | |
1225 | { | |
1226 | char peek = peek_char (dm); | |
1227 | ||
1228 | DEMANGLE_TRACE ("unqualified-name", dm); | |
1229 | ||
140d75d7 | 1230 | if (IS_DIGIT ((unsigned char) peek)) |
168d63e5 | 1231 | RETURN_IF_ERROR (demangle_source_name (dm)); |
1232 | else if (peek >= 'a' && peek <= 'z') | |
1233 | { | |
1234 | int num_args; | |
1235 | RETURN_IF_ERROR (demangle_operator_name (dm, 0, &num_args)); | |
1236 | } | |
1237 | else if (peek == 'C' || peek == 'D') | |
1238 | RETURN_IF_ERROR (demangle_ctor_dtor_name (dm)); | |
1239 | else | |
1240 | return "Unexpected character in <unqualified-name>."; | |
1241 | ||
1242 | return STATUS_OK; | |
1243 | } | |
1244 | ||
1245 | /* Demangles and emits <source-name>. | |
1246 | ||
1247 | <source-name> ::= <length number> <identifier> */ | |
1248 | ||
1249 | static status_t | |
1250 | demangle_source_name (dm) | |
1251 | demangling_t dm; | |
1252 | { | |
1253 | int length; | |
1254 | ||
1255 | DEMANGLE_TRACE ("source-name", dm); | |
1256 | ||
1257 | /* Decode the length of the identifier. */ | |
1258 | RETURN_IF_ERROR (demangle_number (dm, &length, 10, 0)); | |
1259 | if (length == 0) | |
1260 | return "Zero length in <source-name>."; | |
1261 | ||
1262 | /* Now the identifier itself. It's placed into last_source_name, | |
1263 | where it can be used to build a constructor or destructor name. */ | |
1264 | RETURN_IF_ERROR (demangle_identifier (dm, length, | |
1265 | dm->last_source_name)); | |
1266 | ||
1267 | /* Emit it. */ | |
140d75d7 | 1268 | RETURN_IF_ERROR (result_append_string (dm, dm->last_source_name)); |
168d63e5 | 1269 | |
1270 | return STATUS_OK; | |
1271 | } | |
1272 | ||
1273 | /* Demangles a number, either a <number> or a <positive-number> at the | |
1274 | current position, consuming all consecutive digit characters. Sets | |
1275 | *VALUE to the resulting numberand returns STATUS_OK. The number is | |
1276 | interpreted as BASE, which must be either 10 or 36. If IS_SIGNED | |
1277 | is non-zero, negative numbers -- prefixed with `n' -- are accepted. | |
1278 | ||
1279 | <number> ::= [n] <positive-number> | |
1280 | ||
1281 | <positive-number> ::= <decimal integer> */ | |
1282 | ||
1283 | static status_t | |
1284 | demangle_number (dm, value, base, is_signed) | |
1285 | demangling_t dm; | |
1286 | int *value; | |
1287 | int base; | |
1288 | int is_signed; | |
1289 | { | |
1290 | dyn_string_t number = dyn_string_new (10); | |
1291 | ||
1292 | DEMANGLE_TRACE ("number", dm); | |
1293 | ||
140d75d7 | 1294 | if (number == NULL) |
1295 | return STATUS_ALLOCATION_FAILED; | |
1296 | ||
168d63e5 | 1297 | demangle_number_literally (dm, number, base, is_signed); |
1298 | *value = strtol (dyn_string_buf (number), NULL, base); | |
1299 | dyn_string_delete (number); | |
1300 | ||
1301 | return STATUS_OK; | |
1302 | } | |
1303 | ||
1304 | /* Demangles a number at the current position. The digits (and minus | |
1305 | sign, if present) that make up the number are appended to STR. | |
1306 | Only base-BASE digits are accepted; BASE must be either 10 or 36. | |
1307 | If IS_SIGNED, negative numbers -- prefixed with `n' -- are | |
1308 | accepted. Does not consume a trailing underscore or other | |
1309 | terminating character. */ | |
1310 | ||
1311 | static status_t | |
1312 | demangle_number_literally (dm, str, base, is_signed) | |
1313 | demangling_t dm; | |
1314 | dyn_string_t str; | |
1315 | int base; | |
1316 | int is_signed; | |
1317 | { | |
1318 | DEMANGLE_TRACE ("number*", dm); | |
1319 | ||
1320 | if (base != 10 && base != 36) | |
1321 | return STATUS_INTERNAL_ERROR; | |
1322 | ||
1323 | /* An `n' denotes a negative number. */ | |
1324 | if (is_signed && peek_char (dm) == 'n') | |
1325 | { | |
1326 | /* Skip past the n. */ | |
1327 | advance_char (dm); | |
1328 | /* The normal way to write a negative number is with a minus | |
1329 | sign. */ | |
140d75d7 | 1330 | if (!dyn_string_append_char (str, '-')) |
1331 | return STATUS_ALLOCATION_FAILED; | |
168d63e5 | 1332 | } |
1333 | ||
1334 | /* Loop until we hit a non-digit. */ | |
1335 | while (1) | |
1336 | { | |
1337 | char peek = peek_char (dm); | |
140d75d7 | 1338 | if (IS_DIGIT ((unsigned char) peek) |
168d63e5 | 1339 | || (base == 36 && peek >= 'A' && peek <= 'Z')) |
140d75d7 | 1340 | { |
1341 | /* Accumulate digits. */ | |
1342 | if (!dyn_string_append_char (str, next_char (dm))) | |
1343 | return STATUS_ALLOCATION_FAILED; | |
1344 | } | |
168d63e5 | 1345 | else |
1346 | /* Not a digit? All done. */ | |
1347 | break; | |
1348 | } | |
1349 | ||
1350 | return STATUS_OK; | |
1351 | } | |
1352 | ||
1353 | /* Demangles an identifier at the current position of LENGTH | |
1354 | characters and places it in IDENTIFIER. */ | |
1355 | ||
1356 | static status_t | |
1357 | demangle_identifier (dm, length, identifier) | |
1358 | demangling_t dm; | |
1359 | int length; | |
1360 | dyn_string_t identifier; | |
1361 | { | |
1362 | DEMANGLE_TRACE ("identifier", dm); | |
1363 | ||
1364 | dyn_string_clear (identifier); | |
140d75d7 | 1365 | if (!dyn_string_resize (identifier, length)) |
1366 | return STATUS_ALLOCATION_FAILED; | |
1367 | ||
168d63e5 | 1368 | while (length-- > 0) |
1369 | { | |
1370 | if (end_of_name_p (dm)) | |
1371 | return "Unexpected end of name in <identifier>."; | |
140d75d7 | 1372 | if (!dyn_string_append_char (identifier, next_char (dm))) |
1373 | return STATUS_ALLOCATION_FAILED; | |
168d63e5 | 1374 | } |
1375 | ||
1376 | return STATUS_OK; | |
1377 | } | |
1378 | ||
1379 | /* Demangles and emits an <operator-name>. If SHORT_NAME is non-zero, | |
1380 | the short form is emitted; otherwise the full source form | |
1381 | (`operator +' etc.) is emitted. *NUM_ARGS is set to the number of | |
1382 | operands that the operator takes. | |
1383 | ||
1384 | <operator-name> | |
1385 | ::= nw # new | |
1386 | ::= na # new[] | |
1387 | ::= dl # delete | |
1388 | ::= da # delete[] | |
1389 | ::= ps # + (unary) | |
1390 | ::= ng # - (unary) | |
1391 | ::= ad # & (unary) | |
1392 | ::= de # * (unary) | |
1393 | ::= co # ~ | |
1394 | ::= pl # + | |
1395 | ::= mi # - | |
1396 | ::= ml # * | |
1397 | ::= dv # / | |
1398 | ::= rm # % | |
1399 | ::= an # & | |
1400 | ::= or # | | |
1401 | ::= eo # ^ | |
1402 | ::= aS # = | |
1403 | ::= pL # += | |
1404 | ::= mI # -= | |
1405 | ::= mL # *= | |
1406 | ::= dV # /= | |
1407 | ::= rM # %= | |
1408 | ::= aN # &= | |
1409 | ::= oR # |= | |
1410 | ::= eO # ^= | |
1411 | ::= ls # << | |
1412 | ::= rs # >> | |
1413 | ::= lS # <<= | |
1414 | ::= rS # >>= | |
1415 | ::= eq # == | |
1416 | ::= ne # != | |
1417 | ::= lt # < | |
1418 | ::= gt # > | |
1419 | ::= le # <= | |
1420 | ::= ge # >= | |
1421 | ::= nt # ! | |
1422 | ::= aa # && | |
1423 | ::= oo # || | |
1424 | ::= pp # ++ | |
1425 | ::= mm # -- | |
1426 | ::= cm # , | |
1427 | ::= pm # ->* | |
1428 | ::= pt # -> | |
1429 | ::= cl # () | |
1430 | ::= ix # [] | |
1431 | ::= qu # ? | |
1432 | ::= sz # sizeof | |
1433 | ::= cv <type> # cast | |
1434 | ::= vx <source-name> # vendor extended operator */ | |
1435 | ||
1436 | static status_t | |
1437 | demangle_operator_name (dm, short_name, num_args) | |
1438 | demangling_t dm; | |
1439 | int short_name; | |
1440 | int *num_args; | |
1441 | { | |
1442 | struct operator_code | |
1443 | { | |
1444 | /* The mangled code for this operator. */ | |
4b7bc488 | 1445 | const char *code; |
168d63e5 | 1446 | /* The source name of this operator. */ |
4b7bc488 | 1447 | const char *name; |
168d63e5 | 1448 | /* The number of arguments this operator takes. */ |
1449 | int num_args; | |
1450 | }; | |
1451 | ||
4b7bc488 | 1452 | static const struct operator_code operators[] = |
168d63e5 | 1453 | { |
1454 | { "aN", "&=" , 2 }, | |
1455 | { "aS", "=" , 2 }, | |
1456 | { "aa", "&&" , 2 }, | |
1457 | { "ad", "&" , 1 }, | |
1458 | { "an", "&" , 2 }, | |
1459 | { "cl", "()" , 0 }, | |
1460 | { "cm", "," , 2 }, | |
1461 | { "co", "~" , 1 }, | |
1462 | { "dV", "/=" , 2 }, | |
210aba33 | 1463 | { "da", " delete[]", 1 }, |
168d63e5 | 1464 | { "de", "*" , 1 }, |
210aba33 | 1465 | { "dl", " delete" , 1 }, |
168d63e5 | 1466 | { "dv", "/" , 2 }, |
1467 | { "eO", "^=" , 2 }, | |
1468 | { "eo", "^" , 2 }, | |
1469 | { "eq", "==" , 2 }, | |
1470 | { "ge", ">=" , 2 }, | |
1471 | { "gt", ">" , 2 }, | |
1472 | { "ix", "[]" , 2 }, | |
1473 | { "lS", "<<=" , 2 }, | |
1474 | { "le", "<=" , 2 }, | |
1475 | { "ls", "<<" , 2 }, | |
1476 | { "lt", "<" , 2 }, | |
1477 | { "mI", "-=" , 2 }, | |
1478 | { "mL", "*=" , 2 }, | |
1479 | { "mi", "-" , 2 }, | |
1480 | { "ml", "*" , 2 }, | |
1481 | { "mm", "--" , 1 }, | |
210aba33 | 1482 | { "na", " new[]" , 1 }, |
168d63e5 | 1483 | { "ne", "!=" , 2 }, |
1484 | { "ng", "-" , 1 }, | |
1485 | { "nt", "!" , 1 }, | |
210aba33 | 1486 | { "nw", " new" , 1 }, |
168d63e5 | 1487 | { "oR", "|=" , 2 }, |
1488 | { "oo", "||" , 2 }, | |
1489 | { "or", "|" , 2 }, | |
1490 | { "pL", "+=" , 2 }, | |
1491 | { "pl", "+" , 2 }, | |
1492 | { "pm", "->*" , 2 }, | |
1493 | { "pp", "++" , 1 }, | |
1494 | { "ps", "+" , 1 }, | |
1495 | { "qu", "?" , 3 }, | |
1496 | { "rM", "%=" , 2 }, | |
1497 | { "rS", ">>=" , 2 }, | |
1498 | { "rm", "%" , 2 }, | |
1499 | { "rs", ">>" , 2 }, | |
210aba33 | 1500 | { "sz", " sizeof" , 1 } |
168d63e5 | 1501 | }; |
1502 | ||
1503 | const int num_operators = | |
1504 | sizeof (operators) / sizeof (struct operator_code); | |
1505 | ||
1506 | int c0 = next_char (dm); | |
1507 | int c1 = next_char (dm); | |
4b7bc488 | 1508 | const struct operator_code* p1 = operators; |
1509 | const struct operator_code* p2 = operators + num_operators; | |
168d63e5 | 1510 | |
1511 | DEMANGLE_TRACE ("operator-name", dm); | |
1512 | ||
1513 | /* Is this a vendor extended operator? */ | |
1514 | if (c0 == 'v' && c1 == 'x') | |
1515 | { | |
140d75d7 | 1516 | RETURN_IF_ERROR (result_append (dm, "operator")); |
168d63e5 | 1517 | RETURN_IF_ERROR (demangle_source_name (dm)); |
1518 | *num_args = 0; | |
1519 | return STATUS_OK; | |
1520 | } | |
1521 | ||
1522 | /* Is this a conversion operator? */ | |
1523 | if (c0 == 'c' && c1 == 'v') | |
1524 | { | |
140d75d7 | 1525 | RETURN_IF_ERROR (result_append (dm, "operator ")); |
168d63e5 | 1526 | /* Demangle the converted-to type. */ |
1527 | RETURN_IF_ERROR (demangle_type (dm)); | |
1528 | *num_args = 0; | |
1529 | return STATUS_OK; | |
1530 | } | |
1531 | ||
1532 | /* Perform a binary search for the operator code. */ | |
1533 | while (1) | |
1534 | { | |
4b7bc488 | 1535 | const struct operator_code* p = p1 + (p2 - p1) / 2; |
168d63e5 | 1536 | char match0 = p->code[0]; |
1537 | char match1 = p->code[1]; | |
1538 | ||
1539 | if (c0 == match0 && c1 == match1) | |
1540 | /* Found it. */ | |
1541 | { | |
1542 | if (!short_name) | |
140d75d7 | 1543 | RETURN_IF_ERROR (result_append (dm, "operator")); |
1544 | RETURN_IF_ERROR (result_append (dm, p->name)); | |
168d63e5 | 1545 | *num_args = p->num_args; |
1546 | ||
1547 | return STATUS_OK; | |
1548 | } | |
1549 | ||
1550 | if (p == p1) | |
1551 | /* Couldn't find it. */ | |
1552 | return "Unknown code in <operator-name>."; | |
1553 | ||
1554 | /* Try again. */ | |
1555 | if (c0 < match0 || (c0 == match0 && c1 < match1)) | |
1556 | p2 = p; | |
1557 | else | |
1558 | p1 = p; | |
1559 | } | |
1560 | } | |
1561 | ||
1562 | /* Demangles and emits a <special-name>. | |
1563 | ||
1564 | <special-name> ::= GV <object name> # Guard variable | |
1565 | ::= Th[n] <offset number> _ <base name> <base encoding> | |
1566 | # non-virtual base override thunk | |
1567 | ::= Tv[n] <offset number> _ <vcall offset number> | |
1568 | _ <base encoding> | |
1569 | # virtual base override thunk | |
1570 | ::= TV <type> # virtual table | |
1571 | ::= TT <type> # VTT | |
1572 | ::= TI <type> # typeinfo structure | |
1573 | ::= TS <type> # typeinfo name | |
1574 | ||
210aba33 | 1575 | Also demangles the special g++ manglings, |
168d63e5 | 1576 | |
1577 | <special-name> ::= CT <type> <offset number> _ <base type> | |
210aba33 | 1578 | # construction vtable |
1579 | ::= TF <type> # typeinfo function (old ABI only) | |
1580 | ::= TJ <type> # java Class structure */ | |
168d63e5 | 1581 | |
1582 | static status_t | |
1583 | demangle_special_name (dm) | |
1584 | demangling_t dm; | |
1585 | { | |
1586 | dyn_string_t number; | |
1587 | int unused; | |
1588 | char peek = peek_char (dm); | |
1589 | ||
1590 | DEMANGLE_TRACE ("special-name", dm); | |
1591 | ||
1592 | if (peek == 'G') | |
1593 | { | |
1594 | /* A guard variable name. Consume the G. */ | |
1595 | advance_char (dm); | |
1596 | RETURN_IF_ERROR (demangle_char (dm, 'V')); | |
140d75d7 | 1597 | RETURN_IF_ERROR (result_append (dm, "guard variable for ")); |
168d63e5 | 1598 | RETURN_IF_ERROR (demangle_name (dm, &unused)); |
1599 | } | |
1600 | else if (peek == 'T') | |
1601 | { | |
140d75d7 | 1602 | status_t status = STATUS_OK; |
1603 | ||
168d63e5 | 1604 | /* Other C++ implementation miscellania. Consume the T. */ |
1605 | advance_char (dm); | |
1606 | ||
1607 | switch (peek_char (dm)) | |
1608 | { | |
1609 | case 'V': | |
1610 | /* Virtual table. */ | |
1611 | advance_char (dm); | |
140d75d7 | 1612 | RETURN_IF_ERROR (result_append (dm, "vtable for ")); |
168d63e5 | 1613 | RETURN_IF_ERROR (demangle_type (dm)); |
1614 | break; | |
1615 | ||
1616 | case 'T': | |
1617 | /* VTT structure. */ | |
1618 | advance_char (dm); | |
140d75d7 | 1619 | RETURN_IF_ERROR (result_append (dm, "VTT for ")); |
168d63e5 | 1620 | RETURN_IF_ERROR (demangle_type (dm)); |
1621 | break; | |
1622 | ||
1623 | case 'I': | |
1624 | /* Typeinfo structure. */ | |
1625 | advance_char (dm); | |
140d75d7 | 1626 | RETURN_IF_ERROR (result_append (dm, "typeinfo for ")); |
168d63e5 | 1627 | RETURN_IF_ERROR (demangle_type (dm)); |
1628 | break; | |
1629 | ||
210aba33 | 1630 | case 'F': |
1631 | /* Typeinfo function. Used only in old ABI with new mangling. */ | |
1632 | advance_char (dm); | |
140d75d7 | 1633 | RETURN_IF_ERROR (result_append (dm, "typeinfo fn for ")); |
210aba33 | 1634 | RETURN_IF_ERROR (demangle_type (dm)); |
1635 | break; | |
1636 | ||
168d63e5 | 1637 | case 'S': |
1638 | /* Character string containing type name, used in typeinfo. */ | |
1639 | advance_char (dm); | |
140d75d7 | 1640 | RETURN_IF_ERROR (result_append (dm, "typeinfo name for ")); |
168d63e5 | 1641 | RETURN_IF_ERROR (demangle_type (dm)); |
1642 | break; | |
1643 | ||
210aba33 | 1644 | case 'J': |
1645 | /* The java Class variable corresponding to a C++ class. */ | |
1646 | advance_char (dm); | |
140d75d7 | 1647 | RETURN_IF_ERROR (result_append (dm, "java Class for ")); |
210aba33 | 1648 | RETURN_IF_ERROR (demangle_type (dm)); |
1649 | break; | |
1650 | ||
168d63e5 | 1651 | case 'h': |
1652 | /* Non-virtual thunk. */ | |
1653 | advance_char (dm); | |
140d75d7 | 1654 | RETURN_IF_ERROR (result_append (dm, "non-virtual thunk")); |
168d63e5 | 1655 | /* Demangle and emit the offset. */ |
1656 | number = dyn_string_new (4); | |
140d75d7 | 1657 | if (number == NULL) |
1658 | return STATUS_ALLOCATION_FAILED; | |
168d63e5 | 1659 | demangle_number_literally (dm, number, 10, 1); |
1660 | /* Don't display the offset unless in verbose mode. */ | |
1661 | if (flag_verbose) | |
1662 | { | |
140d75d7 | 1663 | status = result_append_char (dm, ' '); |
1664 | if (STATUS_NO_ERROR (status)) | |
1665 | status = result_append_string (dm, number); | |
168d63e5 | 1666 | } |
1667 | dyn_string_delete (number); | |
140d75d7 | 1668 | RETURN_IF_ERROR (status); |
168d63e5 | 1669 | /* Demangle the separator. */ |
1670 | RETURN_IF_ERROR (demangle_char (dm, '_')); | |
1671 | /* Demangle and emit the target name and function type. */ | |
140d75d7 | 1672 | RETURN_IF_ERROR (result_append (dm, " to ")); |
168d63e5 | 1673 | RETURN_IF_ERROR (demangle_encoding (dm)); |
1674 | break; | |
1675 | ||
1676 | case 'v': | |
1677 | /* Virtual thunk. */ | |
1678 | advance_char (dm); | |
140d75d7 | 1679 | RETURN_IF_ERROR (result_append (dm, "virtual thunk ")); |
168d63e5 | 1680 | /* Demangle and emit the offset. */ |
1681 | number = dyn_string_new (4); | |
140d75d7 | 1682 | if (number == NULL) |
1683 | return STATUS_ALLOCATION_FAILED; | |
168d63e5 | 1684 | demangle_number_literally (dm, number, 10, 1); |
1685 | /* Don't display the offset unless in verbose mode. */ | |
1686 | if (flag_verbose) | |
1687 | { | |
140d75d7 | 1688 | status = result_append_string (dm, number); |
1689 | if (STATUS_NO_ERROR (status)) | |
1690 | result_append_char (dm, ' '); | |
168d63e5 | 1691 | } |
1692 | dyn_string_delete (number); | |
140d75d7 | 1693 | RETURN_IF_ERROR (status); |
168d63e5 | 1694 | /* Demangle the separator. */ |
1695 | RETURN_IF_ERROR (demangle_char (dm, '_')); | |
1696 | /* Demangle and emit the vcall offset. */ | |
1697 | number = dyn_string_new (4); | |
140d75d7 | 1698 | if (number == NULL) |
1699 | return STATUS_ALLOCATION_FAILED; | |
168d63e5 | 1700 | demangle_number_literally (dm, number, 10, 1); |
1701 | /* Don't display the vcall offset unless in verbose mode. */ | |
1702 | if (flag_verbose) | |
1703 | { | |
140d75d7 | 1704 | status = result_append_string (dm, number); |
1705 | if (STATUS_NO_ERROR (status)) | |
1706 | status = result_append_char (dm, ' '); | |
168d63e5 | 1707 | } |
1708 | dyn_string_delete (number); | |
140d75d7 | 1709 | RETURN_IF_ERROR (status); |
168d63e5 | 1710 | /* Demangle the separator. */ |
1711 | RETURN_IF_ERROR (demangle_char (dm, '_')); | |
1712 | /* Demangle and emit the target function. */ | |
140d75d7 | 1713 | RETURN_IF_ERROR (result_append (dm, "to ")); |
168d63e5 | 1714 | RETURN_IF_ERROR (demangle_encoding (dm)); |
1715 | break; | |
1716 | ||
1717 | case 'C': | |
1718 | /* TC is a special g++ mangling for a construction vtable. */ | |
1719 | if (!flag_strict) | |
1720 | { | |
597f928d | 1721 | dyn_string_t derived_type; |
1722 | ||
168d63e5 | 1723 | advance_char (dm); |
140d75d7 | 1724 | RETURN_IF_ERROR (result_append (dm, "construction vtable for ")); |
597f928d | 1725 | |
1726 | /* Demangle the derived type off to the side. */ | |
1727 | RETURN_IF_ERROR (result_push (dm)); | |
168d63e5 | 1728 | RETURN_IF_ERROR (demangle_type (dm)); |
597f928d | 1729 | derived_type = (dyn_string_t) result_pop (dm); |
1730 | ||
168d63e5 | 1731 | /* Demangle the offset. */ |
1732 | number = dyn_string_new (4); | |
140d75d7 | 1733 | if (number == NULL) |
597f928d | 1734 | { |
1735 | dyn_string_delete (derived_type); | |
1736 | return STATUS_ALLOCATION_FAILED; | |
1737 | } | |
168d63e5 | 1738 | demangle_number_literally (dm, number, 10, 1); |
1739 | /* Demangle the underscore separator. */ | |
597f928d | 1740 | status = demangle_char (dm, '_'); |
1741 | ||
168d63e5 | 1742 | /* Demangle the base type. */ |
597f928d | 1743 | if (STATUS_NO_ERROR (status)) |
1744 | status = demangle_type (dm); | |
1745 | ||
1746 | /* Emit the derived type. */ | |
1747 | if (STATUS_NO_ERROR (status)) | |
1748 | status = result_append (dm, "-in-"); | |
1749 | if (STATUS_NO_ERROR (status)) | |
1750 | status = result_append_string (dm, derived_type); | |
1751 | dyn_string_delete (derived_type); | |
1752 | ||
168d63e5 | 1753 | /* Don't display the offset unless in verbose mode. */ |
1754 | if (flag_verbose) | |
1755 | { | |
140d75d7 | 1756 | status = result_append_char (dm, ' '); |
1757 | if (STATUS_NO_ERROR (status)) | |
1758 | result_append_string (dm, number); | |
168d63e5 | 1759 | } |
1760 | dyn_string_delete (number); | |
140d75d7 | 1761 | RETURN_IF_ERROR (status); |
168d63e5 | 1762 | break; |
1763 | } | |
1764 | /* If flag_strict, fall through. */ | |
1765 | ||
1766 | default: | |
1767 | return "Unrecognized <special-name>."; | |
1768 | } | |
1769 | } | |
1770 | else | |
1771 | return STATUS_ERROR; | |
1772 | ||
1773 | return STATUS_OK; | |
1774 | } | |
1775 | ||
1776 | /* Demangles and emits a <ctor-dtor-name>. | |
1777 | ||
1778 | <ctor-dtor-name> | |
1779 | ::= C1 # complete object (in-charge) ctor | |
1780 | ::= C2 # base object (not-in-charge) ctor | |
1781 | ::= C3 # complete object (in-charge) allocating ctor | |
168d63e5 | 1782 | ::= D0 # deleting (in-charge) dtor |
1783 | ::= D1 # complete object (in-charge) dtor | |
1784 | ::= D2 # base object (not-in-charge) dtor */ | |
1785 | ||
1786 | static status_t | |
1787 | demangle_ctor_dtor_name (dm) | |
1788 | demangling_t dm; | |
1789 | { | |
1790 | static const char *const ctor_flavors[] = | |
1791 | { | |
1792 | "in-charge", | |
1793 | "not-in-charge", | |
65bcf503 | 1794 | "allocating" |
168d63e5 | 1795 | }; |
1796 | static const char *const dtor_flavors[] = | |
1797 | { | |
1798 | "in-charge deleting", | |
1799 | "in-charge", | |
1800 | "not-in-charge" | |
1801 | }; | |
1802 | ||
1803 | int flavor; | |
1804 | char peek = peek_char (dm); | |
1805 | ||
1806 | DEMANGLE_TRACE ("ctor-dtor-name", dm); | |
1807 | ||
1808 | if (peek == 'C') | |
1809 | { | |
1810 | /* A constructor name. Consume the C. */ | |
1811 | advance_char (dm); | |
65bcf503 | 1812 | if (peek_char (dm) < '1' || peek_char (dm) > '3') |
168d63e5 | 1813 | return "Unrecognized constructor."; |
140d75d7 | 1814 | RETURN_IF_ERROR (result_append_string (dm, dm->last_source_name)); |
168d63e5 | 1815 | /* Print the flavor of the constructor if in verbose mode. */ |
1816 | flavor = next_char (dm) - '1'; | |
1817 | if (flag_verbose) | |
1818 | { | |
140d75d7 | 1819 | RETURN_IF_ERROR (result_append (dm, "[")); |
1820 | RETURN_IF_ERROR (result_append (dm, ctor_flavors[flavor])); | |
1821 | RETURN_IF_ERROR (result_append_char (dm, ']')); | |
168d63e5 | 1822 | } |
1823 | } | |
1824 | else if (peek == 'D') | |
1825 | { | |
1826 | /* A destructor name. Consume the D. */ | |
1827 | advance_char (dm); | |
1828 | if (peek_char (dm) < '0' || peek_char (dm) > '2') | |
1829 | return "Unrecognized destructor."; | |
140d75d7 | 1830 | RETURN_IF_ERROR (result_append_char (dm, '~')); |
1831 | RETURN_IF_ERROR (result_append_string (dm, dm->last_source_name)); | |
168d63e5 | 1832 | /* Print the flavor of the destructor if in verbose mode. */ |
1833 | flavor = next_char (dm) - '0'; | |
1834 | if (flag_verbose) | |
1835 | { | |
140d75d7 | 1836 | RETURN_IF_ERROR (result_append (dm, " [")); |
1837 | RETURN_IF_ERROR (result_append (dm, dtor_flavors[flavor])); | |
1838 | RETURN_IF_ERROR (result_append_char (dm, ']')); | |
168d63e5 | 1839 | } |
1840 | } | |
1841 | else | |
1842 | return STATUS_ERROR; | |
1843 | ||
1844 | return STATUS_OK; | |
1845 | } | |
1846 | ||
1847 | /* Handle pointer, reference, and pointer-to-member cases for | |
1848 | demangle_type. All consecutive `P's, `R's, and 'M's are joined to | |
1849 | build a pointer/reference type. We snarf all these, plus the | |
1850 | following <type>, all at once since we need to know whether we have | |
1851 | a pointer to data or pointer to function to construct the right | |
1852 | output syntax. C++'s pointer syntax is hairy. | |
1853 | ||
1854 | <type> ::= P <type> | |
1855 | ::= R <type> | |
1856 | ::= <pointer-to-member-type> | |
1857 | ||
1858 | <pointer-to-member-type> ::= M </class/ type> </member/ type> */ | |
1859 | ||
1860 | static status_t | |
1861 | demangle_type_ptr (dm) | |
1862 | demangling_t dm; | |
1863 | { | |
1864 | char next; | |
1865 | status_t status; | |
1866 | ||
1867 | /* Collect pointer symbols into this string. */ | |
1868 | dyn_string_t symbols = dyn_string_new (10); | |
1869 | ||
1870 | DEMANGLE_TRACE ("type*", dm); | |
1871 | ||
140d75d7 | 1872 | if (symbols == NULL) |
1873 | return STATUS_ALLOCATION_FAILED; | |
1874 | ||
168d63e5 | 1875 | /* Scan forward, collecting pointers and references into symbols, |
1876 | until we hit something else. Then emit the type. */ | |
1877 | while (1) | |
1878 | { | |
1879 | next = peek_char (dm); | |
1880 | if (next == 'P') | |
1881 | { | |
140d75d7 | 1882 | if (!dyn_string_append_char (symbols, '*')) |
1883 | return STATUS_ALLOCATION_FAILED; | |
168d63e5 | 1884 | advance_char (dm); |
1885 | } | |
1886 | else if (next == 'R') | |
1887 | { | |
140d75d7 | 1888 | if (!dyn_string_append_char (symbols, '&')) |
1889 | return STATUS_ALLOCATION_FAILED; | |
168d63e5 | 1890 | advance_char (dm); |
1891 | } | |
1892 | else if (next == 'M') | |
1893 | { | |
1894 | /* Pointer-to-member. */ | |
1895 | dyn_string_t class_type; | |
1896 | ||
1897 | /* Eat the 'M'. */ | |
1898 | advance_char (dm); | |
1899 | ||
1900 | /* Capture the type of which this is a pointer-to-member. */ | |
140d75d7 | 1901 | RETURN_IF_ERROR (result_push (dm)); |
168d63e5 | 1902 | RETURN_IF_ERROR (demangle_type (dm)); |
1903 | class_type = (dyn_string_t) result_pop (dm); | |
1904 | ||
1905 | /* Build the pointer-to-member notation. It comes before | |
1906 | other pointer and reference qualifiers -- */ | |
140d75d7 | 1907 | if (!dyn_string_prepend_cstr (symbols, "::*")) |
1908 | return STATUS_ALLOCATION_FAILED; | |
1909 | if (!dyn_string_prepend (symbols, class_type)) | |
1910 | return STATUS_ALLOCATION_FAILED; | |
168d63e5 | 1911 | dyn_string_delete (class_type); |
1912 | ||
1913 | if (peek_char (dm) == 'F') | |
1914 | continue; | |
1915 | ||
1916 | /* Demangle the type of the pointed-to member. */ | |
1917 | status = demangle_type (dm); | |
1918 | /* Make it pretty. */ | |
140d75d7 | 1919 | if (STATUS_NO_ERROR (status)) |
1920 | status = result_append_space (dm); | |
168d63e5 | 1921 | /* Add the pointer-to-member syntax, and other pointer and |
1922 | reference symbols. */ | |
140d75d7 | 1923 | if (STATUS_NO_ERROR (status)) |
1924 | status = result_append_string (dm, symbols); | |
168d63e5 | 1925 | /* Clean up. */ |
1926 | dyn_string_delete (symbols); | |
1927 | ||
1928 | RETURN_IF_ERROR (status); | |
1929 | return STATUS_OK; | |
1930 | } | |
1931 | else if (next == 'F') | |
1932 | { | |
1933 | /* Ooh, tricky, a pointer-to-function. */ | |
1934 | int position = result_length (dm); | |
140d75d7 | 1935 | status = result_append_char (dm, '('); |
1936 | if (STATUS_NO_ERROR (status)) | |
1937 | status = result_append_string (dm, symbols); | |
1938 | if (STATUS_NO_ERROR (status)) | |
1939 | status = result_append_char (dm, ')'); | |
168d63e5 | 1940 | dyn_string_delete (symbols); |
140d75d7 | 1941 | RETURN_IF_ERROR (status); |
168d63e5 | 1942 | |
1943 | RETURN_IF_ERROR (demangle_function_type (dm, position)); | |
1944 | return STATUS_OK; | |
1945 | } | |
1946 | else | |
1947 | { | |
c1b316c0 | 1948 | /* No more pointer or reference tokens. Finish up. */ |
168d63e5 | 1949 | status = demangle_type (dm); |
1950 | ||
140d75d7 | 1951 | if (STATUS_NO_ERROR (status)) |
1952 | status = result_append_string (dm, symbols); | |
168d63e5 | 1953 | dyn_string_delete (symbols); |
1954 | ||
1955 | RETURN_IF_ERROR (status); | |
1956 | return STATUS_OK; | |
1957 | } | |
1958 | } | |
1959 | } | |
1960 | ||
1961 | /* Demangles and emits a <type>. | |
1962 | ||
1963 | <type> ::= <builtin-type> | |
1964 | ::= <function-type> | |
1965 | ::= <class-enum-type> | |
1966 | ::= <array-type> | |
1967 | ::= <pointer-to-member-type> | |
1968 | ::= <template-param> | |
1969 | ::= <CV-qualifiers> <type> | |
1970 | ::= P <type> # pointer-to | |
1971 | ::= R <type> # reference-to | |
1972 | ::= C <type> # complex pair (C 2000) | |
1973 | ::= G <type> # imaginary (C 2000) | |
1974 | ::= U <source-name> <type> # vendor extended type qualifier | |
1975 | ::= <substitution> */ | |
1976 | ||
1977 | static status_t | |
1978 | demangle_type (dm) | |
1979 | demangling_t dm; | |
1980 | { | |
1981 | int start = substitution_start (dm); | |
1982 | char peek = peek_char (dm); | |
b7f68aff | 1983 | char peek_next; |
168d63e5 | 1984 | int template_p = 0; |
1985 | int special_std_substitution; | |
1986 | int is_builtin_type = 0; | |
1987 | template_arg_list_t old_arg_list = current_template_arg_list (dm); | |
1988 | int template_parm = NOT_TEMPLATE_PARM; | |
1989 | ||
1990 | DEMANGLE_TRACE ("type", dm); | |
1991 | ||
1992 | /* A <class-enum-type> can start with a digit (a <source-name>), an | |
1993 | N (a <nested-name>), or a Z (a <local-name>). */ | |
140d75d7 | 1994 | if (IS_DIGIT ((unsigned char) peek) || peek == 'N' || peek == 'Z') |
168d63e5 | 1995 | RETURN_IF_ERROR (demangle_class_enum_type (dm, &template_p)); |
1996 | else if (peek >= 'a' && peek <= 'z') | |
1997 | { | |
1998 | RETURN_IF_ERROR (demangle_builtin_type (dm)); | |
1999 | is_builtin_type = 1; | |
2000 | } | |
2001 | else | |
2002 | switch (peek) | |
2003 | { | |
2004 | case 'r': | |
2005 | case 'V': | |
2006 | case 'K': | |
2007 | { | |
2008 | status_t status; | |
2009 | dyn_string_t cv_qualifiers = dyn_string_new (24); | |
140d75d7 | 2010 | |
2011 | if (cv_qualifiers == NULL) | |
2012 | return STATUS_ALLOCATION_FAILED; | |
2013 | ||
168d63e5 | 2014 | demangle_CV_qualifiers (dm, cv_qualifiers); |
2015 | ||
2016 | /* If the qualifiers apply to a pointer or reference, they | |
2017 | need to come after the whole qualified type. */ | |
2018 | if (peek_char (dm) == 'P' || peek_char (dm) == 'R') | |
2019 | { | |
2020 | status = demangle_type (dm); | |
140d75d7 | 2021 | if (STATUS_NO_ERROR (status)) |
2022 | status = result_append_space (dm); | |
2023 | if (STATUS_NO_ERROR (status)) | |
2024 | status = result_append_string (dm, cv_qualifiers); | |
168d63e5 | 2025 | } |
2026 | /* Otherwise, the qualifiers come first. */ | |
2027 | else | |
2028 | { | |
140d75d7 | 2029 | status = result_append_string (dm, cv_qualifiers); |
2030 | if (STATUS_NO_ERROR (status)) | |
2031 | status = result_append_space (dm); | |
2032 | if (STATUS_NO_ERROR (status)) | |
2033 | status = demangle_type (dm); | |
168d63e5 | 2034 | } |
2035 | ||
2036 | dyn_string_delete (cv_qualifiers); | |
2037 | RETURN_IF_ERROR (status); | |
2038 | } | |
2039 | break; | |
2040 | ||
2041 | case 'F': | |
2042 | return "Non-pointer or -reference function type."; | |
2043 | ||
2044 | case 'A': | |
2045 | RETURN_IF_ERROR (demangle_array_type (dm)); | |
2046 | break; | |
2047 | ||
2048 | case 'T': | |
2049 | RETURN_IF_ERROR (demangle_template_param (dm, &template_parm)); | |
2050 | break; | |
2051 | ||
2052 | case 'S': | |
b7f68aff | 2053 | /* First check if this is a special substitution. If it is, |
2054 | this is a <class-enum-type>. Special substitutions have a | |
2055 | letter following the `S'; other substitutions have a digit | |
2056 | or underscore. */ | |
2057 | peek_next = peek_char_next (dm); | |
2058 | if (IS_DIGIT (peek_next) || peek_next == '_') | |
c1b316c0 | 2059 | { |
2060 | RETURN_IF_ERROR ( | |
2061 | demangle_substitution (dm, &template_p, | |
2062 | &special_std_substitution)); | |
2063 | ||
2064 | /* The substituted name may have been a template name. | |
2065 | Check if template arguments follow, and if so, demangle | |
2066 | them. */ | |
2067 | if (peek_char (dm) == 'I') | |
2068 | RETURN_IF_ERROR (demangle_template_args (dm)); | |
2069 | } | |
b7f68aff | 2070 | else |
2071 | demangle_class_enum_type (dm, &template_p); | |
168d63e5 | 2072 | break; |
2073 | ||
2074 | case 'P': | |
2075 | case 'R': | |
2076 | case 'M': | |
2077 | RETURN_IF_ERROR (demangle_type_ptr (dm)); | |
2078 | break; | |
2079 | ||
2080 | case 'C': | |
2081 | /* A C99 complex type. */ | |
140d75d7 | 2082 | RETURN_IF_ERROR (result_append (dm, "complex ")); |
168d63e5 | 2083 | advance_char (dm); |
2084 | RETURN_IF_ERROR (demangle_type (dm)); | |
2085 | break; | |
2086 | ||
2087 | case 'G': | |
2088 | /* A C99 imaginary type. */ | |
140d75d7 | 2089 | RETURN_IF_ERROR (result_append (dm, "imaginary ")); |
168d63e5 | 2090 | advance_char (dm); |
2091 | RETURN_IF_ERROR (demangle_type (dm)); | |
2092 | break; | |
2093 | ||
2094 | case 'U': | |
2095 | /* Vendor extended type qualifier. */ | |
2096 | advance_char (dm); | |
2097 | RETURN_IF_ERROR (demangle_source_name (dm)); | |
140d75d7 | 2098 | RETURN_IF_ERROR (result_append_char (dm, ' ')); |
168d63e5 | 2099 | RETURN_IF_ERROR (demangle_type (dm)); |
2100 | break; | |
2101 | ||
2102 | default: | |
2103 | return "Unexpected character in <type>."; | |
2104 | } | |
2105 | ||
2106 | /* Unqualified builin types are not substitution candidates. */ | |
2107 | if (!is_builtin_type) | |
2108 | /* Add a new substitution for the type. If this type was a | |
2109 | <template-param>, pass its index since from the point of | |
2110 | substitutions, a <template-param> token is a substitution | |
2111 | candidate distinct from the type that is substituted for it. */ | |
140d75d7 | 2112 | RETURN_IF_ERROR (substitution_add (dm, start, template_p, template_parm)); |
168d63e5 | 2113 | |
2114 | /* Pop off template argument lists added during mangling of this | |
2115 | type. */ | |
2116 | pop_to_template_arg_list (dm, old_arg_list); | |
2117 | ||
2118 | return STATUS_OK; | |
2119 | } | |
2120 | ||
2121 | /* C++ source names of builtin types, indexed by the mangled code | |
2122 | letter's position in the alphabet ('a' -> 0, 'b' -> 1, etc). */ | |
2123 | static const char *const builtin_type_names[26] = | |
2124 | { | |
2125 | "signed char", /* a */ | |
2126 | "bool", /* b */ | |
2127 | "char", /* c */ | |
2128 | "double", /* d */ | |
2129 | "long double", /* e */ | |
2130 | "float", /* f */ | |
2131 | "__float128", /* g */ | |
2132 | "unsigned char", /* h */ | |
2133 | "int", /* i */ | |
2134 | "unsigned", /* j */ | |
2135 | NULL, /* k */ | |
2136 | "long", /* l */ | |
2137 | "unsigned long", /* m */ | |
2138 | "__int128", /* n */ | |
2139 | "unsigned __int128", /* o */ | |
2140 | NULL, /* p */ | |
2141 | NULL, /* q */ | |
2142 | NULL, /* r */ | |
2143 | "short", /* s */ | |
2144 | "unsigned short", /* t */ | |
2145 | NULL, /* u */ | |
2146 | "void", /* v */ | |
2147 | "wchar_t", /* w */ | |
2148 | "long long", /* x */ | |
2149 | "unsigned long long", /* y */ | |
2150 | "..." /* z */ | |
2151 | }; | |
2152 | ||
2153 | /* Demangles and emits a <builtin-type>. | |
2154 | ||
2155 | <builtin-type> ::= v # void | |
2156 | ::= w # wchar_t | |
2157 | ::= b # bool | |
2158 | ::= c # char | |
2159 | ::= a # signed char | |
2160 | ::= h # unsigned char | |
2161 | ::= s # short | |
2162 | ::= t # unsigned short | |
2163 | ::= i # int | |
2164 | ::= j # unsigned int | |
2165 | ::= l # long | |
2166 | ::= m # unsigned long | |
2167 | ::= x # long long, __int64 | |
2168 | ::= y # unsigned long long, __int64 | |
2169 | ::= n # __int128 | |
2170 | ::= o # unsigned __int128 | |
2171 | ::= f # float | |
2172 | ::= d # double | |
2173 | ::= e # long double, __float80 | |
2174 | ::= g # __float128 | |
2175 | ::= z # ellipsis | |
2176 | ::= u <source-name> # vendor extended type */ | |
2177 | ||
2178 | static status_t | |
2179 | demangle_builtin_type (dm) | |
2180 | demangling_t dm; | |
2181 | { | |
2182 | ||
2183 | char code = peek_char (dm); | |
2184 | ||
2185 | DEMANGLE_TRACE ("builtin-type", dm); | |
2186 | ||
2187 | if (code == 'u') | |
2188 | { | |
2189 | advance_char (dm); | |
2190 | RETURN_IF_ERROR (demangle_source_name (dm)); | |
2191 | return STATUS_OK; | |
2192 | } | |
2193 | else if (code >= 'a' && code <= 'z') | |
2194 | { | |
2195 | const char *type_name = builtin_type_names[code - 'a']; | |
2196 | if (type_name == NULL) | |
2197 | return "Unrecognized <builtin-type> code."; | |
2198 | ||
140d75d7 | 2199 | RETURN_IF_ERROR (result_append (dm, type_name)); |
168d63e5 | 2200 | advance_char (dm); |
2201 | return STATUS_OK; | |
2202 | } | |
2203 | else | |
2204 | return "Non-alphabetic <builtin-type> code."; | |
2205 | } | |
2206 | ||
2207 | /* Demangles all consecutive CV-qualifiers (const, volatile, and | |
2208 | restrict) at the current position. The qualifiers are appended to | |
2209 | QUALIFIERS. Returns STATUS_OK. */ | |
2210 | ||
2211 | static status_t | |
2212 | demangle_CV_qualifiers (dm, qualifiers) | |
2213 | demangling_t dm; | |
2214 | dyn_string_t qualifiers; | |
2215 | { | |
2216 | DEMANGLE_TRACE ("CV-qualifiers", dm); | |
2217 | ||
2218 | while (1) | |
2219 | { | |
2220 | switch (peek_char (dm)) | |
2221 | { | |
2222 | case 'r': | |
140d75d7 | 2223 | if (!dyn_string_append_space (qualifiers)) |
2224 | return STATUS_ALLOCATION_FAILED; | |
2225 | if (!dyn_string_append_cstr (qualifiers, "restrict")) | |
2226 | return STATUS_ALLOCATION_FAILED; | |
168d63e5 | 2227 | break; |
2228 | ||
2229 | case 'V': | |
140d75d7 | 2230 | if (!dyn_string_append_space (qualifiers)) |
2231 | return STATUS_ALLOCATION_FAILED; | |
2232 | if (!dyn_string_append_cstr (qualifiers, "volatile")) | |
2233 | return STATUS_ALLOCATION_FAILED; | |
168d63e5 | 2234 | break; |
2235 | ||
2236 | case 'K': | |
140d75d7 | 2237 | if (!dyn_string_append_space (qualifiers)) |
2238 | return STATUS_ALLOCATION_FAILED; | |
2239 | if (!dyn_string_append_cstr (qualifiers, "const")) | |
2240 | return STATUS_ALLOCATION_FAILED; | |
168d63e5 | 2241 | break; |
2242 | ||
2243 | default: | |
2244 | return STATUS_OK; | |
2245 | } | |
2246 | ||
2247 | advance_char (dm); | |
2248 | } | |
2249 | } | |
2250 | ||
2251 | /* Demangles and emits a <function-type> FUNCTION_NAME_POS is the | |
2252 | position in the result string of the start of the function | |
2253 | identifier, at which the function's return type will be inserted. | |
2254 | ||
2255 | <function-type> ::= F [Y] <bare-function-type> E */ | |
2256 | ||
2257 | static status_t | |
2258 | demangle_function_type (dm, function_name_pos) | |
2259 | demangling_t dm; | |
2260 | int function_name_pos; | |
2261 | { | |
2262 | DEMANGLE_TRACE ("function-type", dm); | |
2263 | RETURN_IF_ERROR (demangle_char (dm, 'F')); | |
2264 | if (peek_char (dm) == 'Y') | |
2265 | { | |
2266 | /* Indicate this function has C linkage if in verbose mode. */ | |
2267 | if (flag_verbose) | |
140d75d7 | 2268 | RETURN_IF_ERROR (result_append (dm, " [extern \"C\"] ")); |
168d63e5 | 2269 | advance_char (dm); |
2270 | } | |
2271 | RETURN_IF_ERROR (demangle_bare_function_type (dm, function_name_pos)); | |
2272 | RETURN_IF_ERROR (demangle_char (dm, 'E')); | |
2273 | return STATUS_OK; | |
2274 | } | |
2275 | ||
2276 | /* Demangles and emits a <bare-function-type>. RETURN_TYPE_POS is the | |
2277 | position in the result string at which the function return type | |
2278 | should be inserted. If RETURN_TYPE_POS is BFT_NO_RETURN_TYPE, the | |
2279 | function's return type is assumed not to be encoded. | |
2280 | ||
2281 | <bare-function-type> ::= <signature type>+ */ | |
2282 | ||
2283 | static status_t | |
2284 | demangle_bare_function_type (dm, return_type_pos) | |
2285 | demangling_t dm; | |
2286 | int return_type_pos; | |
2287 | { | |
2288 | /* Sequence is the index of the current function parameter, counting | |
2289 | from zero. The value -1 denotes the return type. */ | |
2290 | int sequence = | |
2291 | (return_type_pos == BFT_NO_RETURN_TYPE ? 0 : -1); | |
2292 | ||
2293 | DEMANGLE_TRACE ("bare-function-type", dm); | |
2294 | ||
140d75d7 | 2295 | RETURN_IF_ERROR (result_append_char (dm, '(')); |
168d63e5 | 2296 | while (!end_of_name_p (dm) && peek_char (dm) != 'E') |
2297 | { | |
2298 | if (sequence == -1) | |
2299 | /* We're decoding the function's return type. */ | |
2300 | { | |
2301 | dyn_string_t return_type; | |
140d75d7 | 2302 | status_t status = STATUS_OK; |
168d63e5 | 2303 | |
2304 | /* Decode the return type off to the side. */ | |
140d75d7 | 2305 | RETURN_IF_ERROR (result_push (dm)); |
168d63e5 | 2306 | RETURN_IF_ERROR (demangle_type (dm)); |
2307 | return_type = (dyn_string_t) result_pop (dm); | |
2308 | ||
140d75d7 | 2309 | /* Add a space to the end of the type. Insert the return |
2310 | type where we've been asked to. */ | |
2311 | if (!dyn_string_append_space (return_type) | |
2312 | || !dyn_string_insert (result_string (dm), return_type_pos, | |
2313 | return_type)) | |
2314 | status = STATUS_ALLOCATION_FAILED; | |
168d63e5 | 2315 | |
168d63e5 | 2316 | dyn_string_delete (return_type); |
140d75d7 | 2317 | RETURN_IF_ERROR (status); |
168d63e5 | 2318 | } |
2319 | else | |
2320 | { | |
2321 | /* Skip `void' parameter types. One should only occur as | |
2322 | the only type in a parameter list; in that case, we want | |
2323 | to print `foo ()' instead of `foo (void)'. */ | |
2324 | if (peek_char (dm) == 'v') | |
2325 | { | |
2326 | /* Consume the v. */ | |
2327 | advance_char (dm); | |
2328 | continue; | |
2329 | } | |
2330 | /* Separate parameter types by commas. */ | |
2331 | if (sequence > 0) | |
140d75d7 | 2332 | RETURN_IF_ERROR (result_append (dm, ", ")); |
168d63e5 | 2333 | /* Demangle the type. */ |
2334 | RETURN_IF_ERROR (demangle_type (dm)); | |
2335 | } | |
2336 | ||
2337 | ++sequence; | |
2338 | } | |
140d75d7 | 2339 | RETURN_IF_ERROR (result_append_char (dm, ')')); |
168d63e5 | 2340 | |
2341 | return STATUS_OK; | |
2342 | } | |
2343 | ||
2344 | /* Demangles and emits a <class-enum-type>. *TEMPLATE_P is set to | |
2345 | non-zero if the type is a template-id, zero otherwise. | |
2346 | ||
2347 | <class-enum-type> ::= <name> */ | |
2348 | ||
2349 | static status_t | |
2350 | demangle_class_enum_type (dm, template_p) | |
2351 | demangling_t dm; | |
2352 | int *template_p; | |
2353 | { | |
2354 | DEMANGLE_TRACE ("class-enum-type", dm); | |
2355 | ||
2356 | RETURN_IF_ERROR (demangle_name (dm, template_p)); | |
2357 | return STATUS_OK; | |
2358 | } | |
2359 | ||
2360 | /* Demangles and emits an <array-type>. | |
2361 | ||
65bcf503 | 2362 | <array-type> ::= A [<dimension number>] _ <element type> |
2363 | ::= A <dimension expression> _ <element type> */ | |
168d63e5 | 2364 | |
2365 | static status_t | |
2366 | demangle_array_type (dm) | |
2367 | demangling_t dm; | |
2368 | { | |
65bcf503 | 2369 | status_t status = STATUS_OK; |
2370 | dyn_string_t array_size = NULL; | |
2371 | char peek; | |
140d75d7 | 2372 | |
65bcf503 | 2373 | RETURN_IF_ERROR (demangle_char (dm, 'A')); |
168d63e5 | 2374 | |
2375 | /* Demangle the array size into array_size. */ | |
65bcf503 | 2376 | peek = peek_char (dm); |
2377 | if (peek == '_') | |
2378 | /* Array bound is omitted. This is a C99-style VLA. */ | |
2379 | ; | |
2380 | else if (IS_DIGIT (peek_char (dm))) | |
2381 | { | |
2382 | /* It looks like a constant array bound. */ | |
2383 | array_size = dyn_string_new (10); | |
2384 | if (array_size == NULL) | |
2385 | return STATUS_ALLOCATION_FAILED; | |
2386 | status = demangle_number_literally (dm, array_size, 10, 0); | |
2387 | } | |
2388 | else | |
2389 | { | |
2390 | /* Anything is must be an expression for a nont-constant array | |
2391 | bound. This happens if the array type occurs in a template | |
2392 | and the array bound references a template parameter. */ | |
2393 | RETURN_IF_ERROR (result_push (dm)); | |
2394 | RETURN_IF_ERROR (demangle_expression (dm)); | |
2395 | array_size = (dyn_string_t) result_pop (dm); | |
2396 | } | |
2397 | /* array_size may have been allocated by now, so we can't use | |
2398 | RETURN_IF_ERROR until it's been deallocated. */ | |
168d63e5 | 2399 | |
2400 | /* Demangle the base type of the array. */ | |
140d75d7 | 2401 | if (STATUS_NO_ERROR (status)) |
2402 | status = demangle_char (dm, '_'); | |
2403 | if (STATUS_NO_ERROR (status)) | |
2404 | status = demangle_type (dm); | |
168d63e5 | 2405 | |
2406 | /* Emit the array dimension syntax. */ | |
140d75d7 | 2407 | if (STATUS_NO_ERROR (status)) |
2408 | status = result_append_char (dm, '['); | |
65bcf503 | 2409 | if (STATUS_NO_ERROR (status) && array_size != NULL) |
140d75d7 | 2410 | status = result_append_string (dm, array_size); |
2411 | if (STATUS_NO_ERROR (status)) | |
2412 | status = result_append_char (dm, ']'); | |
65bcf503 | 2413 | if (array_size != NULL) |
2414 | dyn_string_delete (array_size); | |
168d63e5 | 2415 | |
140d75d7 | 2416 | RETURN_IF_ERROR (status); |
2417 | ||
168d63e5 | 2418 | return STATUS_OK; |
2419 | } | |
2420 | ||
2421 | /* Demangles and emits a <template-param>. The zero-indexed position | |
2422 | in the parameter list is placed in *TEMPLATE_PARM_NUMBER. | |
2423 | ||
2424 | <template-param> ::= T_ # first template parameter | |
2425 | ::= T <parameter-2 number> _ */ | |
2426 | ||
2427 | static status_t | |
2428 | demangle_template_param (dm, template_parm_number) | |
2429 | demangling_t dm; | |
2430 | int *template_parm_number; | |
2431 | { | |
2432 | int parm_number; | |
2433 | template_arg_list_t current_arg_list = current_template_arg_list (dm); | |
2434 | string_list_t arg; | |
2435 | ||
2436 | DEMANGLE_TRACE ("template-param", dm); | |
2437 | ||
2438 | /* Make sure there is a template argmust list in which to look up | |
2439 | this parameter reference. */ | |
2440 | if (current_arg_list == NULL) | |
2441 | return "Template parameter outside of template."; | |
2442 | ||
2443 | RETURN_IF_ERROR (demangle_char (dm, 'T')); | |
2444 | if (peek_char (dm) == '_') | |
2445 | parm_number = 0; | |
2446 | else | |
2447 | { | |
2448 | RETURN_IF_ERROR (demangle_number (dm, &parm_number, 10, 0)); | |
2449 | ++parm_number; | |
2450 | } | |
2451 | RETURN_IF_ERROR (demangle_char (dm, '_')); | |
2452 | ||
2453 | arg = template_arg_list_get_arg (current_arg_list, parm_number); | |
2454 | if (arg == NULL) | |
2455 | /* parm_number exceeded the number of arguments in the current | |
2456 | template argument list. */ | |
2457 | return "Template parameter number out of bounds."; | |
140d75d7 | 2458 | RETURN_IF_ERROR (result_append_string (dm, (dyn_string_t) arg)); |
168d63e5 | 2459 | |
2460 | if (peek_char (dm) == 'I') | |
2461 | RETURN_IF_ERROR (demangle_template_args (dm)); | |
2462 | ||
2463 | *template_parm_number = parm_number; | |
2464 | return STATUS_OK; | |
2465 | } | |
2466 | ||
2467 | /* Demangles and emits a <template-args>. | |
2468 | ||
2469 | <template-args> ::= I <template-arg>+ E */ | |
2470 | ||
2471 | static status_t | |
2472 | demangle_template_args (dm) | |
2473 | demangling_t dm; | |
2474 | { | |
2475 | int first = 1; | |
140d75d7 | 2476 | dyn_string_t old_last_source_name; |
168d63e5 | 2477 | template_arg_list_t arg_list = template_arg_list_new (); |
2478 | ||
140d75d7 | 2479 | if (arg_list == NULL) |
2480 | return STATUS_ALLOCATION_FAILED; | |
2481 | ||
168d63e5 | 2482 | /* Preserve the most recently demangled source name. */ |
140d75d7 | 2483 | old_last_source_name = dm->last_source_name; |
168d63e5 | 2484 | dm->last_source_name = dyn_string_new (0); |
2485 | ||
2486 | DEMANGLE_TRACE ("template-args", dm); | |
2487 | ||
140d75d7 | 2488 | if (dm->last_source_name == NULL) |
2489 | return STATUS_ALLOCATION_FAILED; | |
2490 | ||
168d63e5 | 2491 | RETURN_IF_ERROR (demangle_char (dm, 'I')); |
c1b316c0 | 2492 | RETURN_IF_ERROR (result_open_template_list (dm)); |
168d63e5 | 2493 | do |
2494 | { | |
2495 | string_list_t arg; | |
2496 | ||
2497 | if (first) | |
2498 | first = 0; | |
2499 | else | |
140d75d7 | 2500 | RETURN_IF_ERROR (result_append (dm, ", ")); |
168d63e5 | 2501 | |
2502 | /* Capture the template arg. */ | |
140d75d7 | 2503 | RETURN_IF_ERROR (result_push (dm)); |
168d63e5 | 2504 | RETURN_IF_ERROR (demangle_template_arg (dm)); |
2505 | arg = result_pop (dm); | |
2506 | ||
2507 | /* Emit it in the demangled name. */ | |
140d75d7 | 2508 | RETURN_IF_ERROR (result_append_string (dm, (dyn_string_t) arg)); |
168d63e5 | 2509 | |
2510 | /* Save it for use in expanding <template-param>s. */ | |
2511 | template_arg_list_add_arg (arg_list, arg); | |
2512 | } | |
2513 | while (peek_char (dm) != 'E'); | |
2514 | /* Append the '>'. */ | |
140d75d7 | 2515 | RETURN_IF_ERROR (result_close_template_list (dm)); |
168d63e5 | 2516 | |
2517 | /* Consume the 'E'. */ | |
2518 | advance_char (dm); | |
2519 | ||
2520 | /* Restore the most recent demangled source name. */ | |
2521 | dyn_string_delete (dm->last_source_name); | |
2522 | dm->last_source_name = old_last_source_name; | |
2523 | ||
2524 | /* Push the list onto the top of the stack of template argument | |
2525 | lists, so that arguments from it are used from now on when | |
2526 | expanding <template-param>s. */ | |
2527 | push_template_arg_list (dm, arg_list); | |
2528 | ||
2529 | return STATUS_OK; | |
2530 | } | |
2531 | ||
2532 | /* This function, which does not correspond to a production in the | |
2533 | mangling spec, handles the `literal' production for both | |
2534 | <template-arg> and <expr-primary>. It does not expect or consume | |
2535 | the initial `L' or final `E'. The demangling is given by: | |
2536 | ||
2537 | <literal> ::= <type> </value/ number> | |
2538 | ||
2539 | and the emitted output is `(type)number'. */ | |
2540 | ||
2541 | static status_t | |
2542 | demangle_literal (dm) | |
2543 | demangling_t dm; | |
2544 | { | |
168d63e5 | 2545 | char peek = peek_char (dm); |
140d75d7 | 2546 | dyn_string_t value_string; |
2547 | status_t status; | |
168d63e5 | 2548 | |
2549 | DEMANGLE_TRACE ("literal", dm); | |
2550 | ||
2551 | if (!flag_verbose && peek >= 'a' && peek <= 'z') | |
2552 | { | |
2553 | /* If not in verbose mode and this is a builtin type, see if we | |
2554 | can produce simpler numerical output. In particular, for | |
2555 | integer types shorter than `long', just write the number | |
2556 | without type information; for bools, write `true' or `false'. | |
2557 | Other refinements could be made here too. */ | |
2558 | ||
2559 | /* This constant string is used to map from <builtin-type> codes | |
2560 | (26 letters of the alphabet) to codes that determine how the | |
2561 | value will be displayed. The codes are: | |
2562 | b: display as bool | |
2563 | i: display as int | |
2564 | l: display as long | |
2565 | A space means the value will be represented using cast | |
2566 | notation. */ | |
2567 | static const char *const code_map = "ibi iii ll ii i "; | |
2568 | ||
2569 | char code = code_map[peek - 'a']; | |
2570 | /* FIXME: Implement demangling of floats and doubles. */ | |
2571 | if (code == 'u') | |
2572 | return STATUS_UNIMPLEMENTED; | |
2573 | if (code == 'b') | |
2574 | { | |
2575 | /* It's a boolean. */ | |
2576 | char value; | |
2577 | ||
2578 | /* Consume the b. */ | |
2579 | advance_char (dm); | |
2580 | /* Look at the next character. It should be 0 or 1, | |
2581 | corresponding to false or true, respectively. */ | |
2582 | value = peek_char (dm); | |
2583 | if (value == '0') | |
140d75d7 | 2584 | RETURN_IF_ERROR (result_append (dm, "false")); |
168d63e5 | 2585 | else if (value == '1') |
140d75d7 | 2586 | RETURN_IF_ERROR (result_append (dm, "true")); |
168d63e5 | 2587 | else |
2588 | return "Unrecognized bool constant."; | |
2589 | /* Consume the 0 or 1. */ | |
2590 | advance_char (dm); | |
2591 | return STATUS_OK; | |
2592 | } | |
2593 | else if (code == 'i' || code == 'l') | |
2594 | { | |
2595 | /* It's an integer or long. */ | |
2596 | ||
2597 | /* Consume the type character. */ | |
2598 | advance_char (dm); | |
140d75d7 | 2599 | |
168d63e5 | 2600 | /* Demangle the number and write it out. */ |
140d75d7 | 2601 | value_string = dyn_string_new (0); |
2602 | status = demangle_number_literally (dm, value_string, 10, 1); | |
2603 | if (STATUS_NO_ERROR (status)) | |
2604 | status = result_append_string (dm, value_string); | |
168d63e5 | 2605 | /* For long integers, append an l. */ |
140d75d7 | 2606 | if (code == 'l' && STATUS_NO_ERROR (status)) |
2607 | status = result_append_char (dm, code); | |
2608 | dyn_string_delete (value_string); | |
2609 | ||
2610 | RETURN_IF_ERROR (status); | |
168d63e5 | 2611 | return STATUS_OK; |
2612 | } | |
2613 | /* ...else code == ' ', so fall through to represent this | |
2614 | literal's type explicitly using cast syntax. */ | |
2615 | } | |
2616 | ||
140d75d7 | 2617 | RETURN_IF_ERROR (result_append_char (dm, '(')); |
168d63e5 | 2618 | RETURN_IF_ERROR (demangle_type (dm)); |
140d75d7 | 2619 | RETURN_IF_ERROR (result_append_char (dm, ')')); |
2620 | ||
2621 | value_string = dyn_string_new (0); | |
2622 | if (value_string == NULL) | |
2623 | return STATUS_ALLOCATION_FAILED; | |
168d63e5 | 2624 | |
140d75d7 | 2625 | status = demangle_number_literally (dm, value_string, 10, 1); |
2626 | if (STATUS_NO_ERROR (status)) | |
2627 | status = result_append_string (dm, value_string); | |
2628 | dyn_string_delete (value_string); | |
2629 | RETURN_IF_ERROR (status); | |
168d63e5 | 2630 | |
2631 | return STATUS_OK; | |
2632 | } | |
2633 | ||
2634 | /* Demangles and emits a <template-arg>. | |
2635 | ||
2636 | <template-arg> ::= <type> # type | |
2637 | ::= L <type> <value number> E # literal | |
2638 | ::= LZ <encoding> E # external name | |
2639 | ::= X <expression> E # expression */ | |
2640 | ||
2641 | static status_t | |
2642 | demangle_template_arg (dm) | |
2643 | demangling_t dm; | |
2644 | { | |
2645 | DEMANGLE_TRACE ("template-arg", dm); | |
2646 | ||
2647 | switch (peek_char (dm)) | |
2648 | { | |
2649 | case 'L': | |
2650 | advance_char (dm); | |
2651 | ||
2652 | if (peek_char (dm) == 'Z') | |
2653 | { | |
2654 | /* External name. */ | |
2655 | advance_char (dm); | |
2656 | /* FIXME: Standard is contradictory here. */ | |
2657 | RETURN_IF_ERROR (demangle_encoding (dm)); | |
2658 | } | |
2659 | else | |
2660 | RETURN_IF_ERROR (demangle_literal (dm)); | |
2661 | RETURN_IF_ERROR (demangle_char (dm, 'E')); | |
2662 | break; | |
2663 | ||
2664 | case 'X': | |
2665 | /* Expression. */ | |
2666 | advance_char (dm); | |
2667 | RETURN_IF_ERROR (demangle_expression (dm)); | |
2668 | break; | |
2669 | ||
2670 | default: | |
2671 | RETURN_IF_ERROR (demangle_type (dm)); | |
2672 | break; | |
2673 | } | |
2674 | ||
2675 | return STATUS_OK; | |
2676 | } | |
2677 | ||
2678 | /* Demangles and emits an <expression>. | |
2679 | ||
2680 | <expression> ::= <unary operator-name> <expression> | |
2681 | ::= <binary operator-name> <expression> <expression> | |
2682 | ::= <expr-primary> | |
2683 | ::= <scope-expression> */ | |
2684 | ||
2685 | static status_t | |
2686 | demangle_expression (dm) | |
2687 | demangling_t dm; | |
2688 | { | |
2689 | char peek = peek_char (dm); | |
2690 | ||
2691 | DEMANGLE_TRACE ("expression", dm); | |
2692 | ||
2693 | if (peek == 'L' || peek == 'T') | |
2694 | RETURN_IF_ERROR (demangle_expr_primary (dm)); | |
2695 | else if (peek == 's' && peek_char_next (dm) == 'r') | |
2696 | RETURN_IF_ERROR (demangle_scope_expression (dm)); | |
2697 | else | |
2698 | /* An operator expression. */ | |
2699 | { | |
2700 | int num_args; | |
140d75d7 | 2701 | status_t status = STATUS_OK; |
168d63e5 | 2702 | dyn_string_t operator_name; |
2703 | ||
2704 | /* We have an operator name. Since we want to output binary | |
2705 | operations in infix notation, capture the operator name | |
2706 | first. */ | |
140d75d7 | 2707 | RETURN_IF_ERROR (result_push (dm)); |
168d63e5 | 2708 | RETURN_IF_ERROR (demangle_operator_name (dm, 1, &num_args)); |
2709 | operator_name = (dyn_string_t) result_pop (dm); | |
2710 | ||
2711 | /* If it's binary, do an operand first. */ | |
2712 | if (num_args > 1) | |
2713 | { | |
140d75d7 | 2714 | status = result_append_char (dm, '('); |
2715 | if (STATUS_NO_ERROR (status)) | |
2716 | status = demangle_expression (dm); | |
2717 | if (STATUS_NO_ERROR (status)) | |
2718 | status = result_append_char (dm, ')'); | |
168d63e5 | 2719 | } |
2720 | ||
140d75d7 | 2721 | /* Emit the operator. */ |
2722 | if (STATUS_NO_ERROR (status)) | |
2723 | status = result_append_string (dm, operator_name); | |
168d63e5 | 2724 | dyn_string_delete (operator_name); |
140d75d7 | 2725 | RETURN_IF_ERROR (status); |
2726 | ||
2727 | /* Emit its second (if binary) or only (if unary) operand. */ | |
2728 | RETURN_IF_ERROR (result_append_char (dm, '(')); | |
168d63e5 | 2729 | RETURN_IF_ERROR (demangle_expression (dm)); |
140d75d7 | 2730 | RETURN_IF_ERROR (result_append_char (dm, ')')); |
168d63e5 | 2731 | |
2732 | /* The ternary operator takes a third operand. */ | |
2733 | if (num_args == 3) | |
2734 | { | |
140d75d7 | 2735 | RETURN_IF_ERROR (result_append (dm, ":(")); |
168d63e5 | 2736 | RETURN_IF_ERROR (demangle_expression (dm)); |
140d75d7 | 2737 | RETURN_IF_ERROR (result_append_char (dm, ')')); |
168d63e5 | 2738 | } |
2739 | } | |
2740 | ||
2741 | return STATUS_OK; | |
2742 | } | |
2743 | ||
2744 | /* Demangles and emits a <scope-expression>. | |
2745 | ||
2746 | <scope-expression> ::= sr <qualifying type> <source-name> | |
2747 | ::= sr <qualifying type> <encoding> */ | |
2748 | ||
2749 | static status_t | |
2750 | demangle_scope_expression (dm) | |
2751 | demangling_t dm; | |
2752 | { | |
2753 | RETURN_IF_ERROR (demangle_char (dm, 's')); | |
2754 | RETURN_IF_ERROR (demangle_char (dm, 'r')); | |
2755 | RETURN_IF_ERROR (demangle_type (dm)); | |
140d75d7 | 2756 | RETURN_IF_ERROR (result_append (dm, "::")); |
168d63e5 | 2757 | RETURN_IF_ERROR (demangle_encoding (dm)); |
2758 | return STATUS_OK; | |
2759 | } | |
2760 | ||
2761 | /* Demangles and emits an <expr-primary>. | |
2762 | ||
2763 | <expr-primary> ::= <template-param> | |
2764 | ::= L <type> <value number> E # literal | |
2765 | ::= L <mangled-name> E # external name */ | |
2766 | ||
2767 | static status_t | |
2768 | demangle_expr_primary (dm) | |
2769 | demangling_t dm; | |
2770 | { | |
2771 | char peek = peek_char (dm); | |
2772 | int unused; | |
2773 | ||
2774 | DEMANGLE_TRACE ("expr-primary", dm); | |
2775 | ||
2776 | if (peek == 'T') | |
2777 | RETURN_IF_ERROR (demangle_template_param (dm, &unused)); | |
2778 | else if (peek == 'L') | |
2779 | { | |
2780 | /* Consume the `L'. */ | |
2781 | advance_char (dm); | |
2782 | peek = peek_char (dm); | |
2783 | ||
2784 | if (peek == '_') | |
2785 | RETURN_IF_ERROR (demangle_mangled_name (dm)); | |
2786 | else | |
2787 | RETURN_IF_ERROR (demangle_literal (dm)); | |
2788 | ||
2789 | RETURN_IF_ERROR (demangle_char (dm, 'E')); | |
2790 | } | |
2791 | else | |
2792 | return STATUS_ERROR; | |
2793 | ||
2794 | return STATUS_OK; | |
2795 | } | |
2796 | ||
2797 | /* Demangles and emits a <substitution>. Sets *TEMPLATE_P to non-zero | |
2798 | if the substitution is the name of a template, zero otherwise. If | |
2799 | the substitution token is St, which corresponds to the `::std::' | |
2800 | namespace and can appear in a non-nested name, sets | |
2801 | *SPECIAL_STD_SUBSTITUTION to non-zero; zero otherwise. | |
2802 | ||
2803 | <substitution> ::= S <seq-id> _ | |
2804 | ::= S_ | |
2805 | ||
2806 | ::= St # ::std:: | |
2807 | ::= Sa # ::std::allocator | |
2808 | ::= Sb # ::std::basic_string | |
2809 | ::= Ss # ::std::basic_string<char, | |
2810 | ::std::char_traits<char>, | |
2811 | ::std::allocator<char> > | |
2812 | ::= Si # ::std::basic_istream<char, | |
2813 | std::char_traits<char> > | |
2814 | ::= So # ::std::basic_ostream<char, | |
2815 | std::char_traits<char> > | |
2816 | ::= Sd # ::std::basic_iostream<char, | |
2817 | std::char_traits<char> > | |
2818 | */ | |
2819 | ||
2820 | static status_t | |
2821 | demangle_substitution (dm, template_p, special_std_substitution) | |
2822 | demangling_t dm; | |
2823 | int *template_p; | |
2824 | int *special_std_substitution; | |
2825 | { | |
2826 | int seq_id; | |
2827 | int peek; | |
2828 | dyn_string_t text; | |
2829 | ||
2830 | DEMANGLE_TRACE ("substitution", dm); | |
2831 | ||
2832 | RETURN_IF_ERROR (demangle_char (dm, 'S')); | |
2833 | *special_std_substitution = 0; | |
2834 | ||
2835 | /* Scan the substitution sequence index. A missing number denotes | |
2836 | the first index. */ | |
2837 | peek = peek_char (dm); | |
2838 | if (peek == '_') | |
2839 | seq_id = -1; | |
2840 | /* If the following character is 0-9 or a capital letter, interpret | |
2841 | the sequence up to the next underscore as a base-36 substitution | |
2842 | index. */ | |
140d75d7 | 2843 | else if (IS_DIGIT ((unsigned char) peek) |
168d63e5 | 2844 | || (peek >= 'A' && peek <= 'Z')) |
2845 | RETURN_IF_ERROR (demangle_number (dm, &seq_id, 36, 0)); | |
2846 | else | |
2847 | { | |
140d75d7 | 2848 | const char *new_last_source_name = NULL; |
2849 | ||
168d63e5 | 2850 | switch (peek) |
2851 | { | |
2852 | case 't': | |
140d75d7 | 2853 | RETURN_IF_ERROR (result_append (dm, "std")); |
168d63e5 | 2854 | *special_std_substitution = 1; |
2855 | break; | |
2856 | ||
2857 | case 'a': | |
140d75d7 | 2858 | RETURN_IF_ERROR (result_append (dm, "std::allocator")); |
2859 | new_last_source_name = "allocator"; | |
b7f68aff | 2860 | *template_p = 1; |
168d63e5 | 2861 | break; |
2862 | ||
2863 | case 'b': | |
140d75d7 | 2864 | RETURN_IF_ERROR (result_append (dm, "std::basic_string")); |
2865 | new_last_source_name = "basic_string"; | |
b7f68aff | 2866 | *template_p = 1; |
168d63e5 | 2867 | break; |
2868 | ||
2869 | case 's': | |
2870 | if (!flag_verbose) | |
2871 | { | |
140d75d7 | 2872 | RETURN_IF_ERROR (result_append (dm, "std::string")); |
2873 | new_last_source_name = "string"; | |
168d63e5 | 2874 | } |
2875 | else | |
2876 | { | |
140d75d7 | 2877 | RETURN_IF_ERROR (result_append (dm, "std::basic_string<char, std::char_traits<char>, std::allocator<char> >")); |
2878 | new_last_source_name = "basic_string"; | |
168d63e5 | 2879 | } |
b7f68aff | 2880 | *template_p = 0; |
168d63e5 | 2881 | break; |
2882 | ||
2883 | case 'i': | |
2884 | if (!flag_verbose) | |
2885 | { | |
140d75d7 | 2886 | RETURN_IF_ERROR (result_append (dm, "std::istream")); |
2887 | new_last_source_name = "istream"; | |
168d63e5 | 2888 | } |
2889 | else | |
2890 | { | |
140d75d7 | 2891 | RETURN_IF_ERROR (result_append (dm, "std::basic_istream<char, std::char_traints<char> >")); |
2892 | new_last_source_name = "basic_istream"; | |
168d63e5 | 2893 | } |
b7f68aff | 2894 | *template_p = 0; |
168d63e5 | 2895 | break; |
2896 | ||
2897 | case 'o': | |
2898 | if (!flag_verbose) | |
2899 | { | |
140d75d7 | 2900 | RETURN_IF_ERROR (result_append (dm, "std::ostream")); |
2901 | new_last_source_name = "ostream"; | |
168d63e5 | 2902 | } |
2903 | else | |
2904 | { | |
140d75d7 | 2905 | RETURN_IF_ERROR (result_append (dm, "std::basic_ostream<char, std::char_traits<char> >")); |
2906 | new_last_source_name = "basic_ostream"; | |
168d63e5 | 2907 | } |
b7f68aff | 2908 | *template_p = 0; |
168d63e5 | 2909 | break; |
2910 | ||
2911 | case 'd': | |
2912 | if (!flag_verbose) | |
2913 | { | |
140d75d7 | 2914 | RETURN_IF_ERROR (result_append (dm, "std::iostream")); |
2915 | new_last_source_name = "iostream"; | |
168d63e5 | 2916 | } |
2917 | else | |
2918 | { | |
140d75d7 | 2919 | RETURN_IF_ERROR (result_append (dm, "std::basic_iostream<char, std::char_traits<char> >")); |
2920 | new_last_source_name = "basic_iostream"; | |
168d63e5 | 2921 | } |
b7f68aff | 2922 | *template_p = 0; |
168d63e5 | 2923 | break; |
2924 | ||
2925 | default: | |
2926 | return "Unrecognized <substitution>."; | |
2927 | } | |
2928 | ||
140d75d7 | 2929 | /* Consume the character we just processed. */ |
168d63e5 | 2930 | advance_char (dm); |
140d75d7 | 2931 | |
2932 | if (new_last_source_name != NULL) | |
2933 | { | |
2934 | if (!dyn_string_copy_cstr (dm->last_source_name, | |
2935 | new_last_source_name)) | |
2936 | return STATUS_ALLOCATION_FAILED; | |
2937 | } | |
2938 | ||
168d63e5 | 2939 | return STATUS_OK; |
2940 | } | |
2941 | ||
2942 | /* Look up the substitution text. Since `S_' is the most recent | |
2943 | substitution, `S0_' is the second-most-recent, etc., shift the | |
2944 | numbering by one. */ | |
2945 | text = substitution_get (dm, seq_id + 1, template_p); | |
b7f68aff | 2946 | if (text == NULL) |
168d63e5 | 2947 | return "Substitution number out of range."; |
2948 | ||
2949 | /* Emit the substitution text. */ | |
140d75d7 | 2950 | RETURN_IF_ERROR (result_append_string (dm, text)); |
168d63e5 | 2951 | |
2952 | RETURN_IF_ERROR (demangle_char (dm, '_')); | |
2953 | return STATUS_OK; | |
2954 | } | |
2955 | ||
2956 | /* Demangles and emits a <local-name>. | |
2957 | ||
2958 | <local-name> := Z <function encoding> E <entity name> [<discriminator>] | |
2959 | := Z <function encoding> E s [<discriminator>] */ | |
2960 | ||
2961 | static status_t | |
2962 | demangle_local_name (dm) | |
2963 | demangling_t dm; | |
2964 | { | |
2965 | DEMANGLE_TRACE ("local-name", dm); | |
2966 | ||
2967 | RETURN_IF_ERROR (demangle_char (dm, 'Z')); | |
2968 | RETURN_IF_ERROR (demangle_encoding (dm)); | |
2969 | RETURN_IF_ERROR (demangle_char (dm, 'E')); | |
140d75d7 | 2970 | RETURN_IF_ERROR (result_append (dm, "'s ")); |
168d63e5 | 2971 | |
2972 | if (peek_char (dm) == 's') | |
2973 | { | |
2974 | /* Local character string literal. */ | |
140d75d7 | 2975 | RETURN_IF_ERROR (result_append (dm, "string literal")); |
168d63e5 | 2976 | /* Consume the s. */ |
2977 | advance_char (dm); | |
2978 | RETURN_IF_ERROR (demangle_discriminator (dm, 0)); | |
2979 | } | |
2980 | else | |
2981 | { | |
2982 | int unused; | |
140d75d7 | 2983 | RETURN_IF_ERROR (result_append (dm, "local ")); |
168d63e5 | 2984 | /* Local name for some other entity. Demangle its name. */ |
2985 | RETURN_IF_ERROR (demangle_name (dm, &unused)); | |
2986 | RETURN_IF_ERROR (demangle_discriminator (dm, 1)); | |
2987 | } | |
2988 | ||
2989 | return STATUS_OK; | |
2990 | } | |
2991 | ||
2992 | /* Optimonally demangles and emits a <discriminator>. If there is no | |
2993 | <discriminator> at the current position in the mangled string, the | |
2994 | descriminator is assumed to be zero. Emit the discriminator number | |
2995 | in parentheses, unless SUPPRESS_FIRST is non-zero and the | |
2996 | discriminator is zero. | |
2997 | ||
2998 | <discriminator> ::= _ <number> */ | |
2999 | ||
3000 | static status_t | |
3001 | demangle_discriminator (dm, suppress_first) | |
3002 | demangling_t dm; | |
3003 | int suppress_first; | |
3004 | { | |
3005 | /* Output for <discriminator>s to the demangled name is completely | |
3006 | supressed if not in verbose mode. */ | |
3007 | ||
3008 | if (peek_char (dm) == '_') | |
3009 | { | |
3010 | /* Consume the underscore. */ | |
3011 | advance_char (dm); | |
3012 | if (flag_verbose) | |
140d75d7 | 3013 | RETURN_IF_ERROR (result_append (dm, " [#")); |
168d63e5 | 3014 | /* Check if there's a number following the underscore. */ |
140d75d7 | 3015 | if (IS_DIGIT ((unsigned char) peek_char (dm))) |
168d63e5 | 3016 | { |
3017 | int discriminator; | |
3018 | /* Demangle the number. */ | |
3019 | RETURN_IF_ERROR (demangle_number (dm, &discriminator, 10, 0)); | |
3020 | if (flag_verbose) | |
3021 | /* Write the discriminator. The mangled number is two | |
3022 | less than the discriminator ordinal, counting from | |
3023 | zero. */ | |
140d75d7 | 3024 | RETURN_IF_ERROR (int_to_dyn_string (discriminator + 2, |
3025 | (dyn_string_t) dm->result)); | |
168d63e5 | 3026 | } |
3027 | else | |
3028 | { | |
3029 | if (flag_verbose) | |
3030 | /* A missing digit correspond to one. */ | |
140d75d7 | 3031 | RETURN_IF_ERROR (result_append_char (dm, '1')); |
168d63e5 | 3032 | } |
3033 | if (flag_verbose) | |
140d75d7 | 3034 | RETURN_IF_ERROR (result_append_char (dm, ']')); |
168d63e5 | 3035 | } |
3036 | else if (!suppress_first) | |
3037 | { | |
3038 | if (flag_verbose) | |
140d75d7 | 3039 | RETURN_IF_ERROR (result_append (dm, " [#0]")); |
168d63e5 | 3040 | } |
3041 | ||
3042 | return STATUS_OK; | |
3043 | } | |
3044 | ||
3045 | /* Demangle NAME into RESULT, which must be an initialized | |
3046 | dyn_string_t. On success, returns STATUS_OK. On failure, returns | |
3047 | an error message, and the contents of RESULT are unchanged. */ | |
3048 | ||
4b7bc488 | 3049 | static status_t |
168d63e5 | 3050 | cp_demangle (name, result) |
140d75d7 | 3051 | const char *name; |
168d63e5 | 3052 | dyn_string_t result; |
3053 | { | |
3054 | status_t status; | |
3055 | int length = strlen (name); | |
3056 | ||
3057 | if (length > 2 && name[0] == '_' && name[1] == 'Z') | |
3058 | { | |
3059 | demangling_t dm = demangling_new (name); | |
140d75d7 | 3060 | if (dm == NULL) |
3061 | return STATUS_ALLOCATION_FAILED; | |
168d63e5 | 3062 | |
140d75d7 | 3063 | status = result_push (dm); |
3064 | if (status != STATUS_OK) | |
3065 | { | |
3066 | demangling_delete (dm); | |
3067 | return status; | |
3068 | } | |
168d63e5 | 3069 | |
140d75d7 | 3070 | status = demangle_mangled_name (dm); |
3071 | if (STATUS_NO_ERROR (status)) | |
168d63e5 | 3072 | { |
3073 | dyn_string_t demangled = (dyn_string_t) result_pop (dm); | |
140d75d7 | 3074 | if (!dyn_string_copy (result, demangled)) |
3075 | return STATUS_ALLOCATION_FAILED; | |
168d63e5 | 3076 | dyn_string_delete (demangled); |
3077 | } | |
3078 | ||
3079 | demangling_delete (dm); | |
3080 | } | |
3081 | else | |
3082 | { | |
3083 | /* It's evidently not a mangled C++ name. It could be the name | |
3084 | of something with C linkage, though, so just copy NAME into | |
3085 | RESULT. */ | |
140d75d7 | 3086 | if (!dyn_string_copy_cstr (result, name)) |
3087 | return STATUS_ALLOCATION_FAILED; | |
168d63e5 | 3088 | status = STATUS_OK; |
3089 | } | |
3090 | ||
140d75d7 | 3091 | return status; |
3092 | } | |
3093 | ||
3094 | /* Demangle TYPE_NAME into RESULT, which must be an initialized | |
3095 | dyn_string_t. On success, returns STATUS_OK. On failiure, returns | |
3096 | an error message, and the contents of RESULT are unchanged. */ | |
3097 | ||
bb37062f | 3098 | #ifdef IN_LIBGCC2 |
140d75d7 | 3099 | static status_t |
3100 | cp_demangle_type (type_name, result) | |
3101 | const char* type_name; | |
3102 | dyn_string_t result; | |
3103 | { | |
3104 | status_t status; | |
3105 | demangling_t dm = demangling_new (type_name); | |
3106 | ||
3107 | if (dm == NULL) | |
3108 | return STATUS_ALLOCATION_FAILED; | |
3109 | ||
3110 | /* Demangle the type name. The demangled name is stored in dm. */ | |
3111 | status = result_push (dm); | |
3112 | if (status != STATUS_OK) | |
3113 | { | |
3114 | demangling_delete (dm); | |
3115 | return status; | |
3116 | } | |
3117 | ||
3118 | status = demangle_type (dm); | |
3119 | ||
3120 | if (STATUS_NO_ERROR (status)) | |
3121 | { | |
3122 | /* The demangling succeeded. Pop the result out of dm and copy | |
3123 | it into RESULT. */ | |
3124 | dyn_string_t demangled = (dyn_string_t) result_pop (dm); | |
3125 | if (!dyn_string_copy (result, demangled)) | |
3126 | return STATUS_ALLOCATION_FAILED; | |
3127 | dyn_string_delete (demangled); | |
3128 | } | |
3129 | ||
3130 | /* Clean up. */ | |
3131 | demangling_delete (dm); | |
3132 | ||
168d63e5 | 3133 | return status; |
3134 | } | |
3135 | ||
140d75d7 | 3136 | extern char *__cxa_demangle PARAMS ((const char *, char *, size_t *, int *)); |
3137 | ||
3138 | /* ABI-mandated entry point in the C++ runtime library for performing | |
3139 | demangling. MANGLED_NAME is a NUL-terminated character string | |
3140 | containing the name to be demangled. | |
3141 | ||
3142 | OUTPUT_BUFFER is a region of memory, allocated with malloc, of | |
3143 | *LENGTH bytes, into which the demangled name is stored. If | |
3144 | OUTPUT_BUFFER is not long enough, it is expanded using realloc. | |
3145 | OUTPUT_BUFFER may instead be NULL; in that case, the demangled name | |
3146 | is placed in a region of memory allocated with malloc. | |
3147 | ||
3148 | If LENGTH is non-NULL, the length of the buffer conaining the | |
3149 | demangled name, is placed in *LENGTH. | |
3150 | ||
3151 | The return value is a pointer to the start of the NUL-terminated | |
3152 | demangled name, or NULL if the demangling fails. The caller is | |
3153 | responsible for deallocating this memory using free. | |
3154 | ||
3155 | *STATUS is set to one of the following values: | |
3156 | 0: The demangling operation succeeded. | |
3157 | -1: A memory allocation failiure occurred. | |
3158 | -2: MANGLED_NAME is not a valid name under the C++ ABI mangling rules. | |
3159 | -3: One of the arguments is invalid. | |
3160 | ||
3161 | The demagling is performed using the C++ ABI mangling rules, with | |
3162 | GNU extensions. */ | |
3163 | ||
3164 | char * | |
3165 | __cxa_demangle (mangled_name, output_buffer, length, status) | |
3166 | const char *mangled_name; | |
3167 | char *output_buffer; | |
3168 | size_t *length; | |
3169 | int *status; | |
3170 | { | |
3171 | struct dyn_string demangled_name; | |
3172 | status_t result; | |
3173 | ||
3174 | if (status == NULL) | |
3175 | return NULL; | |
3176 | ||
3177 | if (mangled_name == NULL) { | |
3178 | *status = -3; | |
3179 | return NULL; | |
3180 | } | |
3181 | ||
3182 | /* Did the caller provide a buffer for the demangled name? */ | |
3183 | if (output_buffer == NULL) { | |
3184 | /* No; dyn_string will malloc a buffer for us. */ | |
3185 | if (!dyn_string_init (&demangled_name, 0)) | |
3186 | { | |
3187 | *status = -1; | |
3188 | return NULL; | |
3189 | } | |
3190 | } | |
3191 | else { | |
3192 | /* Yes. Check that the length was provided. */ | |
3193 | if (length == NULL) { | |
3194 | *status = -3; | |
3195 | return NULL; | |
3196 | } | |
3197 | /* Install the buffer into a dyn_string. */ | |
3198 | demangled_name.allocated = *length; | |
3199 | demangled_name.length = 0; | |
3200 | demangled_name.s = output_buffer; | |
3201 | } | |
3202 | ||
3203 | if (mangled_name[0] == '_' && mangled_name[1] == 'Z') | |
3204 | /* MANGLED_NAME apprears to be a function or variable name. | |
3205 | Demangle it accordingly. */ | |
3206 | result = cp_demangle (mangled_name, &demangled_name); | |
3207 | else | |
3208 | /* Try to demangled MANGLED_NAME as the name of a type. */ | |
3209 | result = cp_demangle_type (mangled_name, &demangled_name); | |
3210 | ||
3211 | if (result == STATUS_OK) | |
3212 | /* The demangling succeeded. */ | |
3213 | { | |
3214 | /* If LENGTH isn't NULL, store the allocated buffer length | |
3215 | there; the buffer may have been realloced by dyn_string | |
3216 | functions. */ | |
3217 | if (length != NULL) | |
3218 | *length = demangled_name.allocated; | |
3219 | /* The operation was a success. */ | |
3220 | *status = 0; | |
3221 | return dyn_string_buf (&demangled_name); | |
3222 | } | |
3223 | else if (result == STATUS_ALLOCATION_FAILED) | |
3224 | /* A call to malloc or realloc failed during the demangling | |
3225 | operation. */ | |
3226 | { | |
3227 | *status = -1; | |
3228 | return NULL; | |
3229 | } | |
3230 | else | |
3231 | /* The demangling failed for another reason, most probably because | |
3232 | MANGLED_NAME isn't a valid mangled name. */ | |
3233 | { | |
3234 | /* If the buffer containing the demangled name wasn't provided | |
3235 | by the caller, free it. */ | |
3236 | if (output_buffer == NULL) | |
3237 | free (dyn_string_buf (&demangled_name)); | |
3238 | *status = -2; | |
3239 | return NULL; | |
3240 | } | |
3241 | } | |
3242 | ||
3243 | #else /* !IN_LIBGCC2 */ | |
3244 | ||
168d63e5 | 3245 | /* Variant entry point for integration with the existing cplus-dem |
3246 | demangler. Attempts to demangle MANGLED. If the demangling | |
3247 | succeeds, returns a buffer, allocated with malloc, containing the | |
3248 | demangled name. The caller must deallocate the buffer using free. | |
3249 | If the demangling failes, returns NULL. */ | |
3250 | ||
3251 | char * | |
3252 | cplus_demangle_new_abi (mangled) | |
3253 | const char* mangled; | |
3254 | { | |
3255 | /* Create a dyn_string to hold the demangled name. */ | |
3256 | dyn_string_t demangled = dyn_string_new (0); | |
3257 | /* Attempt the demangling. */ | |
3258 | status_t status = cp_demangle ((char *) mangled, demangled); | |
140d75d7 | 3259 | if (STATUS_NO_ERROR (status)) |
168d63e5 | 3260 | /* Demangling succeeded. */ |
3261 | { | |
3262 | /* Grab the demangled result from the dyn_string. It was | |
3263 | allocated with malloc, so we can return it directly. */ | |
3264 | char *return_value = dyn_string_release (demangled); | |
168d63e5 | 3265 | /* Hand back the demangled name. */ |
3266 | return return_value; | |
3267 | } | |
140d75d7 | 3268 | else if (status == STATUS_ALLOCATION_FAILED) |
3269 | { | |
3270 | fprintf (stderr, "Memory allocation failed.\n"); | |
3271 | abort (); | |
3272 | } | |
168d63e5 | 3273 | else |
3274 | /* Demangling failed. */ | |
3275 | { | |
3276 | dyn_string_delete (demangled); | |
3277 | return NULL; | |
3278 | } | |
3279 | } | |
3280 | ||
140d75d7 | 3281 | #endif /* IN_LIBGCC2 */ |
3282 | ||
168d63e5 | 3283 | #ifdef STANDALONE_DEMANGLER |
3284 | ||
3285 | #include "getopt.h" | |
3286 | ||
3287 | static void print_usage | |
3288 | PARAMS ((FILE* fp, int exit_value)); | |
3289 | ||
3290 | /* Non-zero if CHAR is a character than can occur in a mangled name. */ | |
7ae7b54c | 3291 | #define is_mangled_char(CHAR) \ |
140d75d7 | 3292 | (IS_ALPHA (CHAR) || IS_DIGIT (CHAR) || (CHAR) == '_') |
168d63e5 | 3293 | |
3294 | /* The name of this program, as invoked. */ | |
3295 | const char* program_name; | |
3296 | ||
3297 | /* Prints usage summary to FP and then exits with EXIT_VALUE. */ | |
3298 | ||
3299 | static void | |
3300 | print_usage (fp, exit_value) | |
3301 | FILE* fp; | |
3302 | int exit_value; | |
3303 | { | |
3304 | fprintf (fp, "Usage: %s [options] [names ...]\n", program_name); | |
3305 | fprintf (fp, "Options:\n", program_name); | |
3306 | fprintf (fp, " -h,--help Display this message.\n"); | |
3307 | fprintf (fp, " -s,--strict Demangle standard names only.\n"); | |
3308 | fprintf (fp, " -v,--verbose Produce verbose demanglings.\n"); | |
3309 | fprintf (fp, "If names are provided, they are demangled. Otherwise filters standard input.\n"); | |
3310 | ||
3311 | exit (exit_value); | |
3312 | } | |
3313 | ||
3314 | /* Option specification for getopt_long. */ | |
3315 | static struct option long_options[] = | |
3316 | { | |
3317 | { "help", no_argument, NULL, 'h' }, | |
3318 | { "strict", no_argument, NULL, 's' }, | |
3319 | { "verbose", no_argument, NULL, 'v' }, | |
3320 | { NULL, no_argument, NULL, 0 }, | |
3321 | }; | |
3322 | ||
3323 | /* Main entry for a demangling filter executable. It will demangle | |
3324 | its command line arguments, if any. If none are provided, it will | |
3325 | filter stdin to stdout, replacing any recognized mangled C++ names | |
3326 | with their demangled equivalents. */ | |
3327 | ||
3328 | int | |
3329 | main (argc, argv) | |
3330 | int argc; | |
3331 | char *argv[]; | |
3332 | { | |
3333 | status_t status; | |
3334 | int i; | |
3335 | int opt_char; | |
3336 | ||
3337 | /* Use the program name of this program, as invoked. */ | |
3338 | program_name = argv[0]; | |
3339 | ||
3340 | /* Parse options. */ | |
3341 | do | |
3342 | { | |
3343 | opt_char = getopt_long (argc, argv, "hsv", long_options, NULL); | |
3344 | switch (opt_char) | |
3345 | { | |
3346 | case '?': /* Unrecognized option. */ | |
3347 | print_usage (stderr, 1); | |
3348 | break; | |
3349 | ||
3350 | case 'h': | |
3351 | print_usage (stdout, 0); | |
3352 | break; | |
3353 | ||
3354 | case 's': | |
3355 | flag_strict = 1; | |
3356 | break; | |
3357 | ||
3358 | case 'v': | |
3359 | flag_verbose = 1; | |
3360 | break; | |
3361 | } | |
3362 | } | |
3363 | while (opt_char != -1); | |
3364 | ||
3365 | if (optind == argc) | |
3366 | /* No command line arguments were provided. Filter stdin. */ | |
3367 | { | |
3368 | dyn_string_t mangled = dyn_string_new (3); | |
3369 | dyn_string_t demangled = dyn_string_new (0); | |
3370 | status_t status; | |
3371 | ||
3372 | /* Read all of input. */ | |
3373 | while (!feof (stdin)) | |
3374 | { | |
3375 | char c = getchar (); | |
3376 | ||
3377 | /* The first character of a mangled name is an underscore. */ | |
3378 | if (feof (stdin)) | |
3379 | break; | |
3380 | if (c != '_') | |
3381 | { | |
3382 | /* It's not a mangled name. Print the character and go | |
3383 | on. */ | |
3384 | putchar (c); | |
3385 | continue; | |
3386 | } | |
3387 | c = getchar (); | |
3388 | ||
3389 | /* The second character of a mangled name is a capital `Z'. */ | |
3390 | if (feof (stdin)) | |
3391 | break; | |
3392 | if (c != 'Z') | |
3393 | { | |
3394 | /* It's not a mangled name. Print the previous | |
3395 | underscore, the `Z', and go on. */ | |
3396 | putchar ('_'); | |
3397 | putchar (c); | |
3398 | continue; | |
3399 | } | |
3400 | ||
3401 | /* Start keeping track of the candidate mangled name. */ | |
3402 | dyn_string_append_char (mangled, '_'); | |
3403 | dyn_string_append_char (mangled, 'Z'); | |
3404 | ||
3405 | /* Pile characters into mangled until we hit one that can't | |
3406 | occur in a mangled name. */ | |
3407 | c = getchar (); | |
3408 | while (!feof (stdin) && is_mangled_char (c)) | |
3409 | { | |
3410 | dyn_string_append_char (mangled, c); | |
3411 | if (feof (stdin)) | |
3412 | break; | |
3413 | c = getchar (); | |
3414 | } | |
3415 | ||
3416 | /* Attempt to demangle the name. */ | |
3417 | status = cp_demangle (dyn_string_buf (mangled), demangled); | |
3418 | ||
3419 | /* If the demangling succeeded, great! Print out the | |
3420 | demangled version. */ | |
140d75d7 | 3421 | if (STATUS_NO_ERROR (status)) |
168d63e5 | 3422 | fputs (dyn_string_buf (demangled), stdout); |
140d75d7 | 3423 | /* Abort on allocation failures. */ |
3424 | else if (status == STATUS_ALLOCATION_FAILED) | |
3425 | { | |
3426 | fprintf (stderr, "Memory allocation failed.\n"); | |
3427 | abort (); | |
3428 | } | |
168d63e5 | 3429 | /* Otherwise, it might not have been a mangled name. Just |
3430 | print out the original text. */ | |
3431 | else | |
3432 | fputs (dyn_string_buf (mangled), stdout); | |
3433 | ||
3434 | /* If we haven't hit EOF yet, we've read one character that | |
3435 | can't occur in a mangled name, so print it out. */ | |
3436 | if (!feof (stdin)) | |
3437 | putchar (c); | |
3438 | ||
3439 | /* Clear the candidate mangled name, to start afresh next | |
3440 | time we hit a `_Z'. */ | |
3441 | dyn_string_clear (mangled); | |
3442 | } | |
3443 | ||
3444 | dyn_string_delete (mangled); | |
3445 | dyn_string_delete (demangled); | |
3446 | } | |
3447 | else | |
3448 | /* Demangle command line arguments. */ | |
3449 | { | |
3450 | dyn_string_t result = dyn_string_new (0); | |
3451 | ||
3452 | /* Loop over command line arguments. */ | |
3453 | for (i = optind; i < argc; ++i) | |
3454 | { | |
3455 | /* Attempt to demangle. */ | |
3456 | status = cp_demangle (argv[i], result); | |
3457 | ||
3458 | /* If it worked, print the demangled name. */ | |
140d75d7 | 3459 | if (STATUS_NO_ERROR (status)) |
168d63e5 | 3460 | printf ("%s\n", dyn_string_buf (result)); |
140d75d7 | 3461 | /* Abort on allocaiton failures. */ |
b7f68aff | 3462 | else if (status == STATUS_ALLOCATION_FAILED) |
140d75d7 | 3463 | { |
3464 | fprintf (stderr, "Memory allocaiton failed.\n"); | |
b7f68aff | 3465 | abort (); |
140d75d7 | 3466 | } |
168d63e5 | 3467 | /* If not, print the error message to stderr instead. */ |
3468 | else | |
3469 | fprintf (stderr, "%s\n", status); | |
3470 | } | |
3471 | dyn_string_delete (result); | |
3472 | } | |
3473 | ||
3474 | return 0; | |
3475 | } | |
3476 | ||
3477 | #endif /* STANDALONE_DEMANGLER */ |