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e49a569c | 1 | /* Demangler for IA64 / g++ V3 ABI. |
35efcd67 | 2 | Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc. |
eb383413 L |
3 | Written by Alex Samuel <samuel@codesourcery.com>. |
4 | ||
74bcd529 DD |
5 | This file is part of GNU CC. |
6 | ||
eb383413 L |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
35efcd67 DD |
12 | In addition to the permissions in the GNU General Public License, the |
13 | Free Software Foundation gives you unlimited permission to link the | |
14 | compiled version of this file into combinations with other programs, | |
15 | and to distribute those combinations without any restriction coming | |
16 | from the use of this file. (The General Public License restrictions | |
17 | do apply in other respects; for example, they cover modification of | |
18 | the file, and distribution when not linked into a combined | |
19 | executable.) | |
20 | ||
eb383413 L |
21 | This program is distributed in the hope that it will be useful, |
22 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | GNU General Public License for more details. | |
25 | ||
26 | You should have received a copy of the GNU General Public License | |
27 | along with this program; if not, write to the Free Software | |
28 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
29 | */ | |
30 | ||
31 | /* This file implements demangling of C++ names mangled according to | |
e49a569c | 32 | the IA64 / g++ V3 ABI. Use the cp_demangle function to |
eb383413 L |
33 | demangle a mangled name, or compile with the preprocessor macro |
34 | STANDALONE_DEMANGLER defined to create a demangling filter | |
74bcd529 DD |
35 | executable (functionally similar to c++filt, but includes this |
36 | demangler only). */ | |
eb383413 L |
37 | |
38 | #ifdef HAVE_CONFIG_H | |
39 | #include "config.h" | |
40 | #endif | |
41 | ||
b1233257 JL |
42 | #include <sys/types.h> |
43 | ||
eb383413 L |
44 | #ifdef HAVE_STDLIB_H |
45 | #include <stdlib.h> | |
46 | #endif | |
47 | ||
48 | #include <stdio.h> | |
49 | ||
50 | #ifdef HAVE_STRING_H | |
51 | #include <string.h> | |
52 | #endif | |
53 | ||
54 | #include "ansidecl.h" | |
55 | #include "libiberty.h" | |
56 | #include "dyn-string.h" | |
57 | #include "demangle.h" | |
58 | ||
59 | /* If CP_DEMANGLE_DEBUG is defined, a trace of the grammar evaluation, | |
60 | and other debugging output, will be generated. */ | |
61 | #ifdef CP_DEMANGLE_DEBUG | |
03d5f569 JM |
62 | #define DEMANGLE_TRACE(PRODUCTION, DM) \ |
63 | fprintf (stderr, " -> %-24s at position %3d\n", \ | |
eb383413 L |
64 | (PRODUCTION), current_position (DM)); |
65 | #else | |
66 | #define DEMANGLE_TRACE(PRODUCTION, DM) | |
67 | #endif | |
68 | ||
03d5f569 JM |
69 | /* Don't include <ctype.h>, to prevent additional unresolved symbols |
70 | from being dragged into the C++ runtime library. */ | |
71 | #define IS_DIGIT(CHAR) ((CHAR) >= '0' && (CHAR) <= '9') | |
72 | #define IS_ALPHA(CHAR) \ | |
73 | (((CHAR) >= 'a' && (CHAR) <= 'z') \ | |
74 | || ((CHAR) >= 'A' && (CHAR) <= 'Z')) | |
75 | ||
74bcd529 DD |
76 | /* The prefix prepended by GCC to an identifier represnting the |
77 | anonymous namespace. */ | |
78 | #define ANONYMOUS_NAMESPACE_PREFIX "_GLOBAL_" | |
79 | ||
bc9bf259 DD |
80 | /* Character(s) to use for namespace separation in demangled output */ |
81 | #define NAMESPACE_SEPARATOR (dm->style == DMGL_JAVA ? "." : "::") | |
82 | ||
eb383413 L |
83 | /* If flag_verbose is zero, some simplifications will be made to the |
84 | output to make it easier to read and supress details that are | |
85 | generally not of interest to the average C++ programmer. | |
86 | Otherwise, the demangled representation will attempt to convey as | |
87 | much information as the mangled form. */ | |
88 | static int flag_verbose; | |
89 | ||
90 | /* If flag_strict is non-zero, demangle strictly according to the | |
91 | specification -- don't demangle special g++ manglings. */ | |
92 | static int flag_strict; | |
93 | ||
59666b35 DD |
94 | /* String_list_t is an extended form of dyn_string_t which provides a |
95 | link field and a caret position for additions to the string. A | |
96 | string_list_t may safely be cast to and used as a dyn_string_t. */ | |
eb383413 L |
97 | |
98 | struct string_list_def | |
99 | { | |
59666b35 | 100 | /* The dyn_string; must be first. */ |
eb383413 | 101 | struct dyn_string string; |
59666b35 DD |
102 | |
103 | /* The position at which additional text is added to this string | |
104 | (using the result_add* macros). This value is an offset from the | |
105 | end of the string, not the beginning (and should be | |
106 | non-positive). */ | |
107 | int caret_position; | |
108 | ||
109 | /* The next string in the list. */ | |
eb383413 L |
110 | struct string_list_def *next; |
111 | }; | |
112 | ||
113 | typedef struct string_list_def *string_list_t; | |
114 | ||
115 | /* Data structure representing a potential substitution. */ | |
116 | ||
117 | struct substitution_def | |
118 | { | |
119 | /* The demangled text of the substitution. */ | |
120 | dyn_string_t text; | |
121 | ||
eb383413 L |
122 | /* Whether this substitution represents a template item. */ |
123 | int template_p : 1; | |
124 | }; | |
125 | ||
eb383413 L |
126 | /* Data structure representing a template argument list. */ |
127 | ||
128 | struct template_arg_list_def | |
129 | { | |
130 | /* The next (lower) template argument list in the stack of currently | |
131 | active template arguments. */ | |
132 | struct template_arg_list_def *next; | |
133 | ||
134 | /* The first element in the list of template arguments in | |
135 | left-to-right order. */ | |
136 | string_list_t first_argument; | |
137 | ||
138 | /* The last element in the arguments lists. */ | |
139 | string_list_t last_argument; | |
140 | }; | |
141 | ||
142 | typedef struct template_arg_list_def *template_arg_list_t; | |
143 | ||
144 | /* Data structure to maintain the state of the current demangling. */ | |
145 | ||
146 | struct demangling_def | |
147 | { | |
148 | /* The full mangled name being mangled. */ | |
03d5f569 | 149 | const char *name; |
eb383413 L |
150 | |
151 | /* Pointer into name at the current position. */ | |
03d5f569 | 152 | const char *next; |
eb383413 L |
153 | |
154 | /* Stack for strings containing demangled result generated so far. | |
155 | Text is emitted to the topmost (first) string. */ | |
156 | string_list_t result; | |
157 | ||
158 | /* The number of presently available substitutions. */ | |
159 | int num_substitutions; | |
160 | ||
161 | /* The allocated size of the substitutions array. */ | |
162 | int substitutions_allocated; | |
163 | ||
164 | /* An array of available substitutions. The number of elements in | |
165 | the array is given by num_substitions, and the allocated array | |
166 | size in substitutions_size. | |
167 | ||
168 | The most recent substition is at the end, so | |
169 | ||
170 | - `S_' corresponds to substititutions[num_substitutions - 1] | |
171 | - `S0_' corresponds to substititutions[num_substitutions - 2] | |
172 | ||
173 | etc. */ | |
174 | struct substitution_def *substitutions; | |
175 | ||
176 | /* The stack of template argument lists. */ | |
177 | template_arg_list_t template_arg_lists; | |
178 | ||
179 | /* The most recently demangled source-name. */ | |
180 | dyn_string_t last_source_name; | |
bc9bf259 DD |
181 | |
182 | /* Language style to use for demangled output. */ | |
183 | int style; | |
e61231f1 JB |
184 | |
185 | /* Set to non-zero iff this name is a constructor. The actual value | |
186 | indicates what sort of constructor this is; see demangle.h. */ | |
187 | enum gnu_v3_ctor_kinds is_constructor; | |
188 | ||
189 | /* Set to non-zero iff this name is a destructor. The actual value | |
190 | indicates what sort of destructor this is; see demangle.h. */ | |
191 | enum gnu_v3_dtor_kinds is_destructor; | |
192 | ||
eb383413 L |
193 | }; |
194 | ||
195 | typedef struct demangling_def *demangling_t; | |
196 | ||
197 | /* This type is the standard return code from most functions. Values | |
198 | other than STATUS_OK contain descriptive messages. */ | |
199 | typedef const char *status_t; | |
200 | ||
201 | /* Special values that can be used as a status_t. */ | |
03d5f569 JM |
202 | #define STATUS_OK NULL |
203 | #define STATUS_ERROR "Error." | |
204 | #define STATUS_UNIMPLEMENTED "Unimplemented." | |
205 | #define STATUS_INTERNAL_ERROR "Internal error." | |
206 | ||
207 | /* This status code indicates a failure in malloc or realloc. */ | |
74bcd529 | 208 | static const char *const status_allocation_failed = "Allocation failed."; |
03d5f569 JM |
209 | #define STATUS_ALLOCATION_FAILED status_allocation_failed |
210 | ||
211 | /* Non-zero if STATUS indicates that no error has occurred. */ | |
212 | #define STATUS_NO_ERROR(STATUS) ((STATUS) == STATUS_OK) | |
eb383413 | 213 | |
03d5f569 JM |
214 | /* Evaluate EXPR, which must produce a status_t. If the status code |
215 | indicates an error, return from the current function with that | |
216 | status code. */ | |
217 | #define RETURN_IF_ERROR(EXPR) \ | |
218 | do \ | |
219 | { \ | |
220 | status_t s = EXPR; \ | |
221 | if (!STATUS_NO_ERROR (s)) \ | |
222 | return s; \ | |
223 | } \ | |
224 | while (0) | |
225 | ||
226 | static status_t int_to_dyn_string | |
eb383413 L |
227 | PARAMS ((int, dyn_string_t)); |
228 | static string_list_t string_list_new | |
229 | PARAMS ((int)); | |
230 | static void string_list_delete | |
231 | PARAMS ((string_list_t)); | |
74bcd529 DD |
232 | static status_t result_add_separated_char |
233 | PARAMS ((demangling_t, int)); | |
03d5f569 | 234 | static status_t result_push |
eb383413 L |
235 | PARAMS ((demangling_t)); |
236 | static string_list_t result_pop | |
237 | PARAMS ((demangling_t)); | |
238 | static int substitution_start | |
239 | PARAMS ((demangling_t)); | |
03d5f569 | 240 | static status_t substitution_add |
74bcd529 | 241 | PARAMS ((demangling_t, int, int)); |
eb383413 L |
242 | static dyn_string_t substitution_get |
243 | PARAMS ((demangling_t, int, int *)); | |
244 | #ifdef CP_DEMANGLE_DEBUG | |
245 | static void substitutions_print | |
246 | PARAMS ((demangling_t, FILE *)); | |
247 | #endif | |
248 | static template_arg_list_t template_arg_list_new | |
249 | PARAMS ((void)); | |
250 | static void template_arg_list_delete | |
251 | PARAMS ((template_arg_list_t)); | |
252 | static void template_arg_list_add_arg | |
253 | PARAMS ((template_arg_list_t, string_list_t)); | |
254 | static string_list_t template_arg_list_get_arg | |
255 | PARAMS ((template_arg_list_t, int)); | |
256 | static void push_template_arg_list | |
257 | PARAMS ((demangling_t, template_arg_list_t)); | |
258 | static void pop_to_template_arg_list | |
259 | PARAMS ((demangling_t, template_arg_list_t)); | |
260 | #ifdef CP_DEMANGLE_DEBUG | |
261 | static void template_arg_list_print | |
262 | PARAMS ((template_arg_list_t, FILE *)); | |
263 | #endif | |
264 | static template_arg_list_t current_template_arg_list | |
265 | PARAMS ((demangling_t)); | |
266 | static demangling_t demangling_new | |
bc9bf259 | 267 | PARAMS ((const char *, int)); |
eb383413 L |
268 | static void demangling_delete |
269 | PARAMS ((demangling_t)); | |
270 | ||
271 | /* The last character of DS. Warning: DS is evaluated twice. */ | |
272 | #define dyn_string_last_char(DS) \ | |
273 | (dyn_string_buf (DS)[dyn_string_length (DS) - 1]) | |
274 | ||
275 | /* Append a space character (` ') to DS if it does not already end | |
03d5f569 | 276 | with one. Evaluates to 1 on success, or 0 on allocation failure. */ |
eb383413 | 277 | #define dyn_string_append_space(DS) \ |
03d5f569 JM |
278 | ((dyn_string_length (DS) > 0 \ |
279 | && dyn_string_last_char (DS) != ' ') \ | |
280 | ? dyn_string_append_char ((DS), ' ') \ | |
281 | : 1) | |
eb383413 L |
282 | |
283 | /* Returns the index of the current position in the mangled name. */ | |
284 | #define current_position(DM) ((DM)->next - (DM)->name) | |
285 | ||
286 | /* Returns the character at the current position of the mangled name. */ | |
287 | #define peek_char(DM) (*((DM)->next)) | |
288 | ||
289 | /* Returns the character one past the current position of the mangled | |
290 | name. */ | |
291 | #define peek_char_next(DM) \ | |
292 | (peek_char (DM) == '\0' ? '\0' : (*((DM)->next + 1))) | |
293 | ||
294 | /* Returns the character at the current position, and advances the | |
295 | current position to the next character. */ | |
296 | #define next_char(DM) (*((DM)->next)++) | |
297 | ||
298 | /* Returns non-zero if the current position is the end of the mangled | |
299 | name, i.e. one past the last character. */ | |
300 | #define end_of_name_p(DM) (peek_char (DM) == '\0') | |
301 | ||
302 | /* Advances the current position by one character. */ | |
303 | #define advance_char(DM) (++(DM)->next) | |
304 | ||
305 | /* Returns the string containing the current demangled result. */ | |
306 | #define result_string(DM) (&(DM)->result->string) | |
307 | ||
59666b35 DD |
308 | /* Returns the position at which new text is inserted into the |
309 | demangled result. */ | |
310 | #define result_caret_pos(DM) \ | |
311 | (result_length (DM) + \ | |
312 | ((string_list_t) result_string (DM))->caret_position) | |
313 | ||
314 | /* Adds a dyn_string_t to the demangled result. */ | |
315 | #define result_add_string(DM, STRING) \ | |
316 | (dyn_string_insert (&(DM)->result->string, \ | |
317 | result_caret_pos (DM), (STRING)) \ | |
03d5f569 | 318 | ? STATUS_OK : STATUS_ALLOCATION_FAILED) |
eb383413 | 319 | |
59666b35 DD |
320 | /* Adds NUL-terminated string CSTR to the demangled result. */ |
321 | #define result_add(DM, CSTR) \ | |
322 | (dyn_string_insert_cstr (&(DM)->result->string, \ | |
323 | result_caret_pos (DM), (CSTR)) \ | |
03d5f569 | 324 | ? STATUS_OK : STATUS_ALLOCATION_FAILED) |
eb383413 | 325 | |
59666b35 DD |
326 | /* Adds character CHAR to the demangled result. */ |
327 | #define result_add_char(DM, CHAR) \ | |
328 | (dyn_string_insert_char (&(DM)->result->string, \ | |
329 | result_caret_pos (DM), (CHAR)) \ | |
03d5f569 | 330 | ? STATUS_OK : STATUS_ALLOCATION_FAILED) |
eb383413 | 331 | |
74bcd529 DD |
332 | /* Inserts a dyn_string_t to the demangled result at position POS. */ |
333 | #define result_insert_string(DM, POS, STRING) \ | |
334 | (dyn_string_insert (&(DM)->result->string, (POS), (STRING)) \ | |
335 | ? STATUS_OK : STATUS_ALLOCATION_FAILED) | |
336 | ||
337 | /* Inserts NUL-terminated string CSTR to the demangled result at | |
338 | position POS. */ | |
339 | #define result_insert(DM, POS, CSTR) \ | |
340 | (dyn_string_insert_cstr (&(DM)->result->string, (POS), (CSTR)) \ | |
341 | ? STATUS_OK : STATUS_ALLOCATION_FAILED) | |
342 | ||
343 | /* Inserts character CHAR to the demangled result at position POS. */ | |
344 | #define result_insert_char(DM, POS, CHAR) \ | |
345 | (dyn_string_insert_char (&(DM)->result->string, (POS), (CHAR)) \ | |
346 | ? STATUS_OK : STATUS_ALLOCATION_FAILED) | |
347 | ||
eb383413 L |
348 | /* The length of the current demangled result. */ |
349 | #define result_length(DM) \ | |
350 | dyn_string_length (&(DM)->result->string) | |
351 | ||
74bcd529 DD |
352 | /* Appends a (less-than, greater-than) character to the result in DM |
353 | to (open, close) a template argument or parameter list. Appends a | |
354 | space first if necessary to prevent spurious elision of angle | |
355 | brackets with the previous character. */ | |
356 | #define result_open_template_list(DM) result_add_separated_char(DM, '<') | |
357 | #define result_close_template_list(DM) result_add_separated_char(DM, '>') | |
358 | ||
03d5f569 JM |
359 | /* Appends a base 10 representation of VALUE to DS. STATUS_OK on |
360 | success. On failure, deletes DS and returns an error code. */ | |
eb383413 | 361 | |
03d5f569 | 362 | static status_t |
eb383413 L |
363 | int_to_dyn_string (value, ds) |
364 | int value; | |
365 | dyn_string_t ds; | |
366 | { | |
367 | int i; | |
368 | int mask = 1; | |
369 | ||
370 | /* Handle zero up front. */ | |
371 | if (value == 0) | |
372 | { | |
03d5f569 JM |
373 | if (!dyn_string_append_char (ds, '0')) |
374 | return STATUS_ALLOCATION_FAILED; | |
375 | return STATUS_OK; | |
eb383413 L |
376 | } |
377 | ||
378 | /* For negative numbers, emit a minus sign. */ | |
379 | if (value < 0) | |
380 | { | |
03d5f569 JM |
381 | if (!dyn_string_append_char (ds, '-')) |
382 | return STATUS_ALLOCATION_FAILED; | |
eb383413 L |
383 | value = -value; |
384 | } | |
385 | ||
386 | /* Find the power of 10 of the first digit. */ | |
387 | i = value; | |
388 | while (i > 9) | |
389 | { | |
390 | mask *= 10; | |
391 | i /= 10; | |
392 | } | |
393 | ||
394 | /* Write the digits. */ | |
395 | while (mask > 0) | |
396 | { | |
397 | int digit = value / mask; | |
03d5f569 JM |
398 | |
399 | if (!dyn_string_append_char (ds, '0' + digit)) | |
400 | return STATUS_ALLOCATION_FAILED; | |
401 | ||
eb383413 L |
402 | value -= digit * mask; |
403 | mask /= 10; | |
404 | } | |
03d5f569 JM |
405 | |
406 | return STATUS_OK; | |
eb383413 L |
407 | } |
408 | ||
409 | /* Creates a new string list node. The contents of the string are | |
410 | empty, but the initial buffer allocation is LENGTH. The string | |
03d5f569 JM |
411 | list node should be deleted with string_list_delete. Returns NULL |
412 | if allocation fails. */ | |
eb383413 L |
413 | |
414 | static string_list_t | |
415 | string_list_new (length) | |
416 | int length; | |
417 | { | |
03d5f569 | 418 | string_list_t s = (string_list_t) malloc (sizeof (struct string_list_def)); |
59666b35 | 419 | s->caret_position = 0; |
03d5f569 JM |
420 | if (s == NULL) |
421 | return NULL; | |
422 | if (!dyn_string_init ((dyn_string_t) s, length)) | |
423 | return NULL; | |
eb383413 L |
424 | return s; |
425 | } | |
426 | ||
427 | /* Deletes the entire string list starting at NODE. */ | |
428 | ||
429 | static void | |
430 | string_list_delete (node) | |
431 | string_list_t node; | |
432 | { | |
433 | while (node != NULL) | |
434 | { | |
435 | string_list_t next = node->next; | |
a88e356a | 436 | dyn_string_delete ((dyn_string_t) node); |
eb383413 L |
437 | node = next; |
438 | } | |
439 | } | |
440 | ||
74bcd529 DD |
441 | /* Appends CHARACTER to the demangled result. If the current trailing |
442 | character of the result is CHARACTER, a space is inserted first. */ | |
eb383413 | 443 | |
03d5f569 | 444 | static status_t |
74bcd529 | 445 | result_add_separated_char (dm, character) |
eb383413 | 446 | demangling_t dm; |
74bcd529 | 447 | int character; |
eb383413 | 448 | { |
59666b35 DD |
449 | char *result = dyn_string_buf (result_string (dm)); |
450 | int caret_pos = result_caret_pos (dm); | |
03d5f569 | 451 | |
59666b35 DD |
452 | /* Add a space if the last character is already the character we |
453 | want to add. */ | |
454 | if (caret_pos > 0 && result[caret_pos - 1] == character) | |
455 | RETURN_IF_ERROR (result_add_char (dm, ' ')); | |
456 | /* Add the character. */ | |
457 | RETURN_IF_ERROR (result_add_char (dm, character)); | |
03d5f569 JM |
458 | |
459 | return STATUS_OK; | |
eb383413 L |
460 | } |
461 | ||
462 | /* Allocates and pushes a new string onto the demangled results stack | |
03d5f569 JM |
463 | for DM. Subsequent demangling with DM will emit to the new string. |
464 | Returns STATUS_OK on success, STATUS_ALLOCATION_FAILED on | |
465 | allocation failure. */ | |
eb383413 | 466 | |
03d5f569 | 467 | static status_t |
eb383413 L |
468 | result_push (dm) |
469 | demangling_t dm; | |
470 | { | |
471 | string_list_t new_string = string_list_new (0); | |
03d5f569 JM |
472 | if (new_string == NULL) |
473 | /* Allocation failed. */ | |
474 | return STATUS_ALLOCATION_FAILED; | |
475 | ||
476 | /* Link the new string to the front of the list of result strings. */ | |
eb383413 L |
477 | new_string->next = (string_list_t) dm->result; |
478 | dm->result = new_string; | |
03d5f569 | 479 | return STATUS_OK; |
eb383413 L |
480 | } |
481 | ||
482 | /* Removes and returns the topmost element on the demangled results | |
483 | stack for DM. The caller assumes ownership for the returned | |
484 | string. */ | |
485 | ||
486 | static string_list_t | |
487 | result_pop (dm) | |
488 | demangling_t dm; | |
489 | { | |
490 | string_list_t top = dm->result; | |
491 | dm->result = top->next; | |
492 | return top; | |
493 | } | |
494 | ||
59666b35 DD |
495 | /* Returns the current value of the caret for the result string. The |
496 | value is an offet from the end of the result string. */ | |
497 | ||
498 | static int | |
499 | result_get_caret (dm) | |
500 | demangling_t dm; | |
501 | { | |
502 | return ((string_list_t) result_string (dm))->caret_position; | |
503 | } | |
504 | ||
505 | /* Sets the value of the caret for the result string, counted as an | |
506 | offet from the end of the result string. */ | |
507 | ||
508 | static void | |
509 | result_set_caret (dm, position) | |
510 | demangling_t dm; | |
511 | int position; | |
512 | { | |
513 | ((string_list_t) result_string (dm))->caret_position = position; | |
514 | } | |
515 | ||
516 | /* Shifts the position of the next addition to the result by | |
517 | POSITION_OFFSET. A negative value shifts the caret to the left. */ | |
518 | ||
519 | static void | |
520 | result_shift_caret (dm, position_offset) | |
521 | demangling_t dm; | |
522 | int position_offset; | |
523 | { | |
524 | ((string_list_t) result_string (dm))->caret_position += position_offset; | |
525 | } | |
526 | ||
527 | /* Returns non-zero if the character that comes right before the place | |
528 | where text will be added to the result is a space. In this case, | |
529 | the caller should supress adding another space. */ | |
530 | ||
531 | static int | |
532 | result_previous_char_is_space (dm) | |
533 | demangling_t dm; | |
534 | { | |
535 | char *result = dyn_string_buf (result_string (dm)); | |
536 | int pos = result_caret_pos (dm); | |
537 | return pos > 0 && result[pos - 1] == ' '; | |
538 | } | |
539 | ||
eb383413 L |
540 | /* Returns the start position of a fragment of the demangled result |
541 | that will be a substitution candidate. Should be called at the | |
542 | start of productions that can add substitutions. */ | |
543 | ||
544 | static int | |
545 | substitution_start (dm) | |
546 | demangling_t dm; | |
547 | { | |
59666b35 | 548 | return result_caret_pos (dm); |
eb383413 L |
549 | } |
550 | ||
551 | /* Adds the suffix of the current demangled result of DM starting at | |
552 | START_POSITION as a potential substitution. If TEMPLATE_P is | |
74bcd529 | 553 | non-zero, this potential substitution is a template-id. */ |
eb383413 | 554 | |
03d5f569 | 555 | static status_t |
74bcd529 | 556 | substitution_add (dm, start_position, template_p) |
eb383413 L |
557 | demangling_t dm; |
558 | int start_position; | |
559 | int template_p; | |
eb383413 L |
560 | { |
561 | dyn_string_t result = result_string (dm); | |
562 | dyn_string_t substitution = dyn_string_new (0); | |
563 | int i; | |
564 | ||
03d5f569 JM |
565 | if (substitution == NULL) |
566 | return STATUS_ALLOCATION_FAILED; | |
567 | ||
568 | /* Extract the substring of the current demangling result that | |
569 | represents the subsitution candidate. */ | |
570 | if (!dyn_string_substring (substitution, | |
59666b35 | 571 | result, start_position, result_caret_pos (dm))) |
03d5f569 JM |
572 | { |
573 | dyn_string_delete (substitution); | |
574 | return STATUS_ALLOCATION_FAILED; | |
575 | } | |
eb383413 | 576 | |
eb383413 L |
577 | /* If there's no room for the new entry, grow the array. */ |
578 | if (dm->substitutions_allocated == dm->num_substitutions) | |
579 | { | |
03d5f569 | 580 | size_t new_array_size; |
74bcd529 DD |
581 | if (dm->substitutions_allocated > 0) |
582 | dm->substitutions_allocated *= 2; | |
583 | else | |
584 | dm->substitutions_allocated = 2; | |
03d5f569 JM |
585 | new_array_size = |
586 | sizeof (struct substitution_def) * dm->substitutions_allocated; | |
587 | ||
588 | dm->substitutions = (struct substitution_def *) | |
589 | realloc (dm->substitutions, new_array_size); | |
590 | if (dm->substitutions == NULL) | |
591 | /* Realloc failed. */ | |
592 | { | |
593 | dyn_string_delete (substitution); | |
594 | return STATUS_ALLOCATION_FAILED; | |
595 | } | |
eb383413 L |
596 | } |
597 | ||
598 | /* Add the substitution to the array. */ | |
74bcd529 | 599 | i = dm->num_substitutions++; |
eb383413 L |
600 | dm->substitutions[i].text = substitution; |
601 | dm->substitutions[i].template_p = template_p; | |
eb383413 L |
602 | |
603 | #ifdef CP_DEMANGLE_DEBUG | |
604 | substitutions_print (dm, stderr); | |
605 | #endif | |
03d5f569 JM |
606 | |
607 | return STATUS_OK; | |
eb383413 L |
608 | } |
609 | ||
610 | /* Returns the Nth-most-recent substitution. Sets *TEMPLATE_P to | |
611 | non-zero if the substitution is a template-id, zero otherwise. | |
612 | N is numbered from zero. DM retains ownership of the returned | |
613 | string. If N is negative, or equal to or greater than the current | |
614 | number of substitution candidates, returns NULL. */ | |
615 | ||
616 | static dyn_string_t | |
617 | substitution_get (dm, n, template_p) | |
618 | demangling_t dm; | |
619 | int n; | |
620 | int *template_p; | |
621 | { | |
622 | struct substitution_def *sub; | |
623 | ||
624 | /* Make sure N is in the valid range. */ | |
625 | if (n < 0 || n >= dm->num_substitutions) | |
626 | return NULL; | |
627 | ||
628 | sub = &(dm->substitutions[n]); | |
629 | *template_p = sub->template_p; | |
630 | return sub->text; | |
631 | } | |
632 | ||
633 | #ifdef CP_DEMANGLE_DEBUG | |
634 | /* Debugging routine to print the current substitutions to FP. */ | |
635 | ||
636 | static void | |
637 | substitutions_print (dm, fp) | |
638 | demangling_t dm; | |
639 | FILE *fp; | |
640 | { | |
641 | int seq_id; | |
642 | int num = dm->num_substitutions; | |
643 | ||
644 | fprintf (fp, "SUBSTITUTIONS:\n"); | |
645 | for (seq_id = -1; seq_id < num - 1; ++seq_id) | |
646 | { | |
647 | int template_p; | |
648 | dyn_string_t text = substitution_get (dm, seq_id + 1, &template_p); | |
649 | ||
650 | if (seq_id == -1) | |
651 | fprintf (fp, " S_ "); | |
652 | else | |
653 | fprintf (fp, " S%d_", seq_id); | |
654 | fprintf (fp, " %c: %s\n", template_p ? '*' : ' ', dyn_string_buf (text)); | |
655 | } | |
656 | } | |
657 | ||
658 | #endif /* CP_DEMANGLE_DEBUG */ | |
659 | ||
03d5f569 JM |
660 | /* Creates a new template argument list. Returns NULL if allocation |
661 | fails. */ | |
eb383413 L |
662 | |
663 | static template_arg_list_t | |
664 | template_arg_list_new () | |
665 | { | |
03d5f569 JM |
666 | template_arg_list_t new_list = |
667 | (template_arg_list_t) malloc (sizeof (struct template_arg_list_def)); | |
668 | if (new_list == NULL) | |
669 | return NULL; | |
eb383413 L |
670 | /* Initialize the new list to have no arguments. */ |
671 | new_list->first_argument = NULL; | |
672 | new_list->last_argument = NULL; | |
673 | /* Return the new list. */ | |
674 | return new_list; | |
675 | } | |
676 | ||
677 | /* Deletes a template argument list and the template arguments it | |
678 | contains. */ | |
679 | ||
680 | static void | |
681 | template_arg_list_delete (list) | |
682 | template_arg_list_t list; | |
683 | { | |
684 | /* If there are any arguments on LIST, delete them. */ | |
685 | if (list->first_argument != NULL) | |
686 | string_list_delete (list->first_argument); | |
687 | /* Delete LIST. */ | |
688 | free (list); | |
689 | } | |
690 | ||
691 | /* Adds ARG to the template argument list ARG_LIST. */ | |
692 | ||
693 | static void | |
694 | template_arg_list_add_arg (arg_list, arg) | |
695 | template_arg_list_t arg_list; | |
696 | string_list_t arg; | |
697 | { | |
698 | if (arg_list->first_argument == NULL) | |
699 | /* If there were no arguments before, ARG is the first one. */ | |
700 | arg_list->first_argument = arg; | |
701 | else | |
702 | /* Make ARG the last argument on the list. */ | |
703 | arg_list->last_argument->next = arg; | |
704 | /* Make ARG the last on the list. */ | |
705 | arg_list->last_argument = arg; | |
706 | arg->next = NULL; | |
707 | } | |
708 | ||
709 | /* Returns the template arugment at position INDEX in template | |
710 | argument list ARG_LIST. */ | |
711 | ||
712 | static string_list_t | |
713 | template_arg_list_get_arg (arg_list, index) | |
714 | template_arg_list_t arg_list; | |
715 | int index; | |
716 | { | |
717 | string_list_t arg = arg_list->first_argument; | |
718 | /* Scan down the list of arguments to find the one at position | |
719 | INDEX. */ | |
720 | while (index--) | |
721 | { | |
722 | arg = arg->next; | |
723 | if (arg == NULL) | |
724 | /* Ran out of arguments before INDEX hit zero. That's an | |
725 | error. */ | |
726 | return NULL; | |
727 | } | |
728 | /* Return the argument at position INDEX. */ | |
729 | return arg; | |
730 | } | |
731 | ||
732 | /* Pushes ARG_LIST onto the top of the template argument list stack. */ | |
733 | ||
734 | static void | |
735 | push_template_arg_list (dm, arg_list) | |
736 | demangling_t dm; | |
737 | template_arg_list_t arg_list; | |
738 | { | |
739 | arg_list->next = dm->template_arg_lists; | |
740 | dm->template_arg_lists = arg_list; | |
741 | #ifdef CP_DEMANGLE_DEBUG | |
742 | fprintf (stderr, " ** pushing template arg list\n"); | |
743 | template_arg_list_print (arg_list, stderr); | |
744 | #endif | |
745 | } | |
746 | ||
747 | /* Pops and deletes elements on the template argument list stack until | |
748 | arg_list is the topmost element. If arg_list is NULL, all elements | |
749 | are popped and deleted. */ | |
750 | ||
751 | static void | |
752 | pop_to_template_arg_list (dm, arg_list) | |
753 | demangling_t dm; | |
754 | template_arg_list_t arg_list; | |
755 | { | |
756 | while (dm->template_arg_lists != arg_list) | |
757 | { | |
758 | template_arg_list_t top = dm->template_arg_lists; | |
759 | /* Disconnect the topmost element from the list. */ | |
760 | dm->template_arg_lists = top->next; | |
761 | /* Delete the popped element. */ | |
762 | template_arg_list_delete (top); | |
763 | #ifdef CP_DEMANGLE_DEBUG | |
764 | fprintf (stderr, " ** removing template arg list\n"); | |
765 | #endif | |
766 | } | |
767 | } | |
768 | ||
769 | #ifdef CP_DEMANGLE_DEBUG | |
770 | ||
771 | /* Prints the contents of ARG_LIST to FP. */ | |
772 | ||
773 | static void | |
774 | template_arg_list_print (arg_list, fp) | |
775 | template_arg_list_t arg_list; | |
776 | FILE *fp; | |
777 | { | |
778 | string_list_t arg; | |
779 | int index = -1; | |
780 | ||
781 | fprintf (fp, "TEMPLATE ARGUMENT LIST:\n"); | |
782 | for (arg = arg_list->first_argument; arg != NULL; arg = arg->next) | |
783 | { | |
784 | if (index == -1) | |
785 | fprintf (fp, " T_ : "); | |
786 | else | |
787 | fprintf (fp, " T%d_ : ", index); | |
788 | ++index; | |
789 | fprintf (fp, "%s\n", dyn_string_buf ((dyn_string_t) arg)); | |
790 | } | |
791 | } | |
792 | ||
793 | #endif /* CP_DEMANGLE_DEBUG */ | |
794 | ||
795 | /* Returns the topmost element on the stack of template argument | |
796 | lists. If there is no list of template arguments, returns NULL. */ | |
797 | ||
798 | static template_arg_list_t | |
799 | current_template_arg_list (dm) | |
800 | demangling_t dm; | |
801 | { | |
802 | return dm->template_arg_lists; | |
803 | } | |
804 | ||
805 | /* Allocates a demangling_t object for demangling mangled NAME. A new | |
03d5f569 JM |
806 | result must be pushed before the returned object can be used. |
807 | Returns NULL if allocation fails. */ | |
eb383413 L |
808 | |
809 | static demangling_t | |
bc9bf259 | 810 | demangling_new (name, style) |
03d5f569 | 811 | const char *name; |
bc9bf259 | 812 | int style; |
eb383413 | 813 | { |
03d5f569 JM |
814 | demangling_t dm; |
815 | dm = (demangling_t) malloc (sizeof (struct demangling_def)); | |
816 | if (dm == NULL) | |
817 | return NULL; | |
eb383413 L |
818 | |
819 | dm->name = name; | |
820 | dm->next = name; | |
821 | dm->result = NULL; | |
eb383413 L |
822 | dm->num_substitutions = 0; |
823 | dm->substitutions_allocated = 10; | |
eb383413 | 824 | dm->template_arg_lists = NULL; |
03d5f569 JM |
825 | dm->last_source_name = dyn_string_new (0); |
826 | if (dm->last_source_name == NULL) | |
827 | return NULL; | |
828 | dm->substitutions = (struct substitution_def *) | |
829 | malloc (dm->substitutions_allocated * sizeof (struct substitution_def)); | |
830 | if (dm->substitutions == NULL) | |
831 | { | |
832 | dyn_string_delete (dm->last_source_name); | |
833 | return NULL; | |
834 | } | |
bc9bf259 | 835 | dm->style = style; |
e61231f1 JB |
836 | dm->is_constructor = 0; |
837 | dm->is_destructor = 0; | |
eb383413 L |
838 | |
839 | return dm; | |
840 | } | |
841 | ||
842 | /* Deallocates a demangling_t object and all memory associated with | |
843 | it. */ | |
844 | ||
845 | static void | |
846 | demangling_delete (dm) | |
847 | demangling_t dm; | |
848 | { | |
849 | int i; | |
850 | template_arg_list_t arg_list = dm->template_arg_lists; | |
851 | ||
852 | /* Delete the stack of template argument lists. */ | |
853 | while (arg_list != NULL) | |
854 | { | |
855 | template_arg_list_t next = arg_list->next; | |
856 | template_arg_list_delete (arg_list); | |
857 | arg_list = next; | |
858 | } | |
859 | /* Delete the list of substitutions. */ | |
860 | for (i = dm->num_substitutions; --i >= 0; ) | |
861 | dyn_string_delete (dm->substitutions[i].text); | |
862 | free (dm->substitutions); | |
863 | /* Delete the demangled result. */ | |
864 | string_list_delete (dm->result); | |
865 | /* Delete the stored identifier name. */ | |
866 | dyn_string_delete (dm->last_source_name); | |
867 | /* Delete the context object itself. */ | |
868 | free (dm); | |
869 | } | |
870 | ||
871 | /* These functions demangle an alternative of the corresponding | |
872 | production in the mangling spec. The first argument of each is a | |
873 | demangling context structure for the current demangling | |
874 | operation. Most emit demangled text directly to the topmost result | |
875 | string on the result string stack in the demangling context | |
876 | structure. */ | |
877 | ||
878 | static status_t demangle_char | |
879 | PARAMS ((demangling_t, int)); | |
880 | static status_t demangle_mangled_name | |
881 | PARAMS ((demangling_t)); | |
882 | static status_t demangle_encoding | |
883 | PARAMS ((demangling_t)); | |
884 | static status_t demangle_name | |
885 | PARAMS ((demangling_t, int *)); | |
886 | static status_t demangle_nested_name | |
887 | PARAMS ((demangling_t, int *)); | |
888 | static status_t demangle_prefix | |
889 | PARAMS ((demangling_t, int *)); | |
890 | static status_t demangle_unqualified_name | |
74bcd529 | 891 | PARAMS ((demangling_t, int *)); |
eb383413 L |
892 | static status_t demangle_source_name |
893 | PARAMS ((demangling_t)); | |
894 | static status_t demangle_number | |
895 | PARAMS ((demangling_t, int *, int, int)); | |
896 | static status_t demangle_number_literally | |
897 | PARAMS ((demangling_t, dyn_string_t, int, int)); | |
898 | static status_t demangle_identifier | |
899 | PARAMS ((demangling_t, int, dyn_string_t)); | |
900 | static status_t demangle_operator_name | |
793011ca | 901 | PARAMS ((demangling_t, int, int *, int *)); |
74bcd529 DD |
902 | static status_t demangle_nv_offset |
903 | PARAMS ((demangling_t)); | |
904 | static status_t demangle_v_offset | |
905 | PARAMS ((demangling_t)); | |
906 | static status_t demangle_call_offset | |
907 | PARAMS ((demangling_t)); | |
eb383413 L |
908 | static status_t demangle_special_name |
909 | PARAMS ((demangling_t)); | |
910 | static status_t demangle_ctor_dtor_name | |
911 | PARAMS ((demangling_t)); | |
912 | static status_t demangle_type_ptr | |
74bcd529 | 913 | PARAMS ((demangling_t, int *, int)); |
eb383413 L |
914 | static status_t demangle_type |
915 | PARAMS ((demangling_t)); | |
916 | static status_t demangle_CV_qualifiers | |
917 | PARAMS ((demangling_t, dyn_string_t)); | |
918 | static status_t demangle_builtin_type | |
919 | PARAMS ((demangling_t)); | |
920 | static status_t demangle_function_type | |
74bcd529 | 921 | PARAMS ((demangling_t, int *)); |
eb383413 | 922 | static status_t demangle_bare_function_type |
74bcd529 | 923 | PARAMS ((demangling_t, int *)); |
eb383413 L |
924 | static status_t demangle_class_enum_type |
925 | PARAMS ((demangling_t, int *)); | |
926 | static status_t demangle_array_type | |
59666b35 | 927 | PARAMS ((demangling_t, int *)); |
eb383413 | 928 | static status_t demangle_template_param |
74bcd529 | 929 | PARAMS ((demangling_t)); |
eb383413 L |
930 | static status_t demangle_template_args |
931 | PARAMS ((demangling_t)); | |
932 | static status_t demangle_literal | |
933 | PARAMS ((demangling_t)); | |
934 | static status_t demangle_template_arg | |
935 | PARAMS ((demangling_t)); | |
936 | static status_t demangle_expression | |
937 | PARAMS ((demangling_t)); | |
938 | static status_t demangle_scope_expression | |
939 | PARAMS ((demangling_t)); | |
940 | static status_t demangle_expr_primary | |
941 | PARAMS ((demangling_t)); | |
942 | static status_t demangle_substitution | |
74bcd529 | 943 | PARAMS ((demangling_t, int *)); |
eb383413 L |
944 | static status_t demangle_local_name |
945 | PARAMS ((demangling_t)); | |
946 | static status_t demangle_discriminator | |
947 | PARAMS ((demangling_t, int)); | |
948 | static status_t cp_demangle | |
bc9bf259 | 949 | PARAMS ((const char *, dyn_string_t, int)); |
03d5f569 JM |
950 | static status_t cp_demangle_type |
951 | PARAMS ((const char*, dyn_string_t)); | |
eb383413 L |
952 | |
953 | /* When passed to demangle_bare_function_type, indicates that the | |
954 | function's return type is not encoded before its parameter types. */ | |
74bcd529 | 955 | #define BFT_NO_RETURN_TYPE NULL |
eb383413 L |
956 | |
957 | /* Check that the next character is C. If so, consume it. If not, | |
958 | return an error. */ | |
959 | ||
960 | static status_t | |
961 | demangle_char (dm, c) | |
962 | demangling_t dm; | |
963 | int c; | |
964 | { | |
965 | static char *error_message = NULL; | |
966 | ||
967 | if (peek_char (dm) == c) | |
968 | { | |
969 | advance_char (dm); | |
970 | return STATUS_OK; | |
971 | } | |
972 | else | |
973 | { | |
974 | if (error_message == NULL) | |
975 | error_message = strdup ("Expected ?"); | |
976 | error_message[9] = c; | |
977 | return error_message; | |
978 | } | |
979 | } | |
980 | ||
981 | /* Demangles and emits a <mangled-name>. | |
982 | ||
983 | <mangled-name> ::= _Z <encoding> */ | |
984 | ||
985 | static status_t | |
986 | demangle_mangled_name (dm) | |
987 | demangling_t dm; | |
988 | { | |
989 | DEMANGLE_TRACE ("mangled-name", dm); | |
990 | RETURN_IF_ERROR (demangle_char (dm, '_')); | |
991 | RETURN_IF_ERROR (demangle_char (dm, 'Z')); | |
992 | RETURN_IF_ERROR (demangle_encoding (dm)); | |
993 | return STATUS_OK; | |
994 | } | |
995 | ||
996 | /* Demangles and emits an <encoding>. | |
997 | ||
998 | <encoding> ::= <function name> <bare-function-type> | |
999 | ::= <data name> | |
03d5f569 | 1000 | ::= <special-name> */ |
eb383413 L |
1001 | |
1002 | static status_t | |
1003 | demangle_encoding (dm) | |
1004 | demangling_t dm; | |
1005 | { | |
74bcd529 | 1006 | int encode_return_type; |
eb383413 | 1007 | int start_position; |
eb383413 L |
1008 | template_arg_list_t old_arg_list = current_template_arg_list (dm); |
1009 | char peek = peek_char (dm); | |
1010 | ||
1011 | DEMANGLE_TRACE ("encoding", dm); | |
1012 | ||
1013 | /* Remember where the name starts. If it turns out to be a template | |
1014 | function, we'll have to insert the return type here. */ | |
59666b35 | 1015 | start_position = result_caret_pos (dm); |
eb383413 | 1016 | |
03d5f569 | 1017 | if (peek == 'G' || peek == 'T') |
eb383413 L |
1018 | RETURN_IF_ERROR (demangle_special_name (dm)); |
1019 | else | |
1020 | { | |
1021 | /* Now demangle the name. */ | |
74bcd529 | 1022 | RETURN_IF_ERROR (demangle_name (dm, &encode_return_type)); |
eb383413 L |
1023 | |
1024 | /* If there's anything left, the name was a function name, with | |
59666b35 | 1025 | maybe its return type, and its parameter types, following. */ |
eb383413 L |
1026 | if (!end_of_name_p (dm) |
1027 | && peek_char (dm) != 'E') | |
1028 | { | |
74bcd529 | 1029 | if (encode_return_type) |
eb383413 L |
1030 | /* Template functions have their return type encoded. The |
1031 | return type should be inserted at start_position. */ | |
1032 | RETURN_IF_ERROR | |
74bcd529 | 1033 | (demangle_bare_function_type (dm, &start_position)); |
eb383413 L |
1034 | else |
1035 | /* Non-template functions don't have their return type | |
1036 | encoded. */ | |
1037 | RETURN_IF_ERROR | |
1038 | (demangle_bare_function_type (dm, BFT_NO_RETURN_TYPE)); | |
1039 | } | |
eb383413 L |
1040 | } |
1041 | ||
1042 | /* Pop off template argument lists that were built during the | |
1043 | mangling of this name, to restore the old template context. */ | |
1044 | pop_to_template_arg_list (dm, old_arg_list); | |
1045 | ||
1046 | return STATUS_OK; | |
1047 | } | |
1048 | ||
1049 | /* Demangles and emits a <name>. | |
1050 | ||
1051 | <name> ::= <unscoped-name> | |
1052 | ::= <unscoped-template-name> <template-args> | |
1053 | ::= <nested-name> | |
1054 | ::= <local-name> | |
1055 | ||
1056 | <unscoped-name> ::= <unqualified-name> | |
1057 | ::= St <unqualified-name> # ::std:: | |
1058 | ||
1059 | <unscoped-template-name> | |
1060 | ::= <unscoped-name> | |
1061 | ::= <substitution> */ | |
1062 | ||
1063 | static status_t | |
74bcd529 | 1064 | demangle_name (dm, encode_return_type) |
eb383413 | 1065 | demangling_t dm; |
74bcd529 | 1066 | int *encode_return_type; |
eb383413 | 1067 | { |
eb383413 | 1068 | int start = substitution_start (dm); |
74bcd529 DD |
1069 | char peek = peek_char (dm); |
1070 | int is_std_substitution = 0; | |
1071 | ||
1072 | /* Generally, the return type is encoded if the function is a | |
1073 | template-id, and suppressed otherwise. There are a few cases, | |
1074 | though, in which the return type is not encoded even for a | |
1075 | templated function. In these cases, this flag is set. */ | |
1076 | int suppress_return_type = 0; | |
eb383413 L |
1077 | |
1078 | DEMANGLE_TRACE ("name", dm); | |
1079 | ||
74bcd529 | 1080 | switch (peek) |
eb383413 L |
1081 | { |
1082 | case 'N': | |
1083 | /* This is a <nested-name>. */ | |
74bcd529 | 1084 | RETURN_IF_ERROR (demangle_nested_name (dm, encode_return_type)); |
eb383413 L |
1085 | break; |
1086 | ||
1087 | case 'Z': | |
1088 | RETURN_IF_ERROR (demangle_local_name (dm)); | |
74bcd529 | 1089 | *encode_return_type = 0; |
eb383413 L |
1090 | break; |
1091 | ||
1092 | case 'S': | |
1093 | /* The `St' substitution allows a name nested in std:: to appear | |
03d5f569 | 1094 | without being enclosed in a nested name. */ |
eb383413 L |
1095 | if (peek_char_next (dm) == 't') |
1096 | { | |
1097 | (void) next_char (dm); | |
1098 | (void) next_char (dm); | |
59666b35 | 1099 | RETURN_IF_ERROR (result_add (dm, "std::")); |
74bcd529 DD |
1100 | RETURN_IF_ERROR |
1101 | (demangle_unqualified_name (dm, &suppress_return_type)); | |
1102 | is_std_substitution = 1; | |
eb383413 L |
1103 | } |
1104 | else | |
74bcd529 | 1105 | RETURN_IF_ERROR (demangle_substitution (dm, encode_return_type)); |
03d5f569 JM |
1106 | /* Check if a template argument list immediately follows. |
1107 | If so, then we just demangled an <unqualified-template-name>. */ | |
1108 | if (peek_char (dm) == 'I') | |
1109 | { | |
74bcd529 DD |
1110 | /* A template name of the form std::<unqualified-name> is a |
1111 | substitution candidate. */ | |
1112 | if (is_std_substitution) | |
1113 | RETURN_IF_ERROR (substitution_add (dm, start, 0)); | |
1114 | /* Demangle the <template-args> here. */ | |
03d5f569 | 1115 | RETURN_IF_ERROR (demangle_template_args (dm)); |
74bcd529 | 1116 | *encode_return_type = !suppress_return_type; |
03d5f569 | 1117 | } |
74bcd529 DD |
1118 | else |
1119 | *encode_return_type = 0; | |
1120 | ||
eb383413 L |
1121 | break; |
1122 | ||
1123 | default: | |
1124 | /* This is an <unscoped-name> or <unscoped-template-name>. */ | |
74bcd529 | 1125 | RETURN_IF_ERROR (demangle_unqualified_name (dm, &suppress_return_type)); |
eb383413 L |
1126 | |
1127 | /* If the <unqualified-name> is followed by template args, this | |
1128 | is an <unscoped-template-name>. */ | |
1129 | if (peek_char (dm) == 'I') | |
1130 | { | |
1131 | /* Add a substitution for the unqualified template name. */ | |
74bcd529 | 1132 | RETURN_IF_ERROR (substitution_add (dm, start, 0)); |
eb383413 L |
1133 | |
1134 | RETURN_IF_ERROR (demangle_template_args (dm)); | |
74bcd529 | 1135 | *encode_return_type = !suppress_return_type; |
eb383413 L |
1136 | } |
1137 | else | |
74bcd529 | 1138 | *encode_return_type = 0; |
eb383413 L |
1139 | |
1140 | break; | |
1141 | } | |
1142 | ||
1143 | return STATUS_OK; | |
1144 | } | |
1145 | ||
1146 | /* Demangles and emits a <nested-name>. | |
1147 | ||
74bcd529 | 1148 | <nested-name> ::= N [<CV-qualifiers>] <prefix> <unqulified-name> E */ |
eb383413 L |
1149 | |
1150 | static status_t | |
74bcd529 | 1151 | demangle_nested_name (dm, encode_return_type) |
eb383413 | 1152 | demangling_t dm; |
74bcd529 | 1153 | int *encode_return_type; |
eb383413 L |
1154 | { |
1155 | char peek; | |
1156 | ||
1157 | DEMANGLE_TRACE ("nested-name", dm); | |
1158 | ||
1159 | RETURN_IF_ERROR (demangle_char (dm, 'N')); | |
1160 | ||
1161 | peek = peek_char (dm); | |
1162 | if (peek == 'r' || peek == 'V' || peek == 'K') | |
1163 | { | |
59666b35 | 1164 | dyn_string_t cv_qualifiers; |
03d5f569 JM |
1165 | status_t status; |
1166 | ||
59666b35 DD |
1167 | /* Snarf up CV qualifiers. */ |
1168 | cv_qualifiers = dyn_string_new (24); | |
03d5f569 JM |
1169 | if (cv_qualifiers == NULL) |
1170 | return STATUS_ALLOCATION_FAILED; | |
eb383413 | 1171 | demangle_CV_qualifiers (dm, cv_qualifiers); |
59666b35 DD |
1172 | |
1173 | /* Emit them, preceded by a space. */ | |
1174 | status = result_add_char (dm, ' '); | |
1175 | if (STATUS_NO_ERROR (status)) | |
1176 | status = result_add_string (dm, cv_qualifiers); | |
1177 | /* The CV qualifiers that occur in a <nested-name> will be | |
1178 | qualifiers for member functions. These are placed at the end | |
1179 | of the function. Therefore, shift the caret to the left by | |
1180 | the length of the qualifiers, so other text is inserted | |
1181 | before them and they stay at the end. */ | |
1182 | result_shift_caret (dm, -dyn_string_length (cv_qualifiers) - 1); | |
1183 | /* Clean up. */ | |
eb383413 | 1184 | dyn_string_delete (cv_qualifiers); |
03d5f569 | 1185 | RETURN_IF_ERROR (status); |
eb383413 | 1186 | } |
59666b35 | 1187 | |
74bcd529 DD |
1188 | RETURN_IF_ERROR (demangle_prefix (dm, encode_return_type)); |
1189 | /* No need to demangle the final <unqualified-name>; demangle_prefix | |
1190 | will handle it. */ | |
eb383413 L |
1191 | RETURN_IF_ERROR (demangle_char (dm, 'E')); |
1192 | ||
1193 | return STATUS_OK; | |
1194 | } | |
1195 | ||
1196 | /* Demangles and emits a <prefix>. | |
1197 | ||
74bcd529 | 1198 | <prefix> ::= <prefix> <unqualified-name> |
eb383413 L |
1199 | ::= <template-prefix> <template-args> |
1200 | ::= # empty | |
1201 | ::= <substitution> | |
1202 | ||
1203 | <template-prefix> ::= <prefix> | |
74bcd529 | 1204 | ::= <substitution> */ |
eb383413 L |
1205 | |
1206 | static status_t | |
74bcd529 | 1207 | demangle_prefix (dm, encode_return_type) |
eb383413 | 1208 | demangling_t dm; |
74bcd529 | 1209 | int *encode_return_type; |
eb383413 L |
1210 | { |
1211 | int start = substitution_start (dm); | |
1212 | int nested = 0; | |
1213 | ||
74bcd529 DD |
1214 | /* ENCODE_RETURN_TYPE is updated as we decend the nesting chain. |
1215 | After <template-args>, it is set to non-zero; after everything | |
1216 | else it is set to zero. */ | |
1217 | ||
1218 | /* Generally, the return type is encoded if the function is a | |
1219 | template-id, and suppressed otherwise. There are a few cases, | |
1220 | though, in which the return type is not encoded even for a | |
1221 | templated function. In these cases, this flag is set. */ | |
1222 | int suppress_return_type = 0; | |
eb383413 L |
1223 | |
1224 | DEMANGLE_TRACE ("prefix", dm); | |
1225 | ||
1226 | while (1) | |
1227 | { | |
1228 | char peek; | |
eb383413 L |
1229 | |
1230 | if (end_of_name_p (dm)) | |
1231 | return "Unexpected end of name in <compound-name>."; | |
1232 | ||
1233 | peek = peek_char (dm); | |
1234 | ||
74bcd529 DD |
1235 | /* We'll initialize suppress_return_type to false, and set it to true |
1236 | if we end up demangling a constructor name. However, make | |
1237 | sure we're not actually about to demangle template arguments | |
1238 | -- if so, this is the <template-args> following a | |
1239 | <template-prefix>, so we'll want the previous flag value | |
1240 | around. */ | |
1241 | if (peek != 'I') | |
1242 | suppress_return_type = 0; | |
1243 | ||
03d5f569 | 1244 | if (IS_DIGIT ((unsigned char) peek) |
eb383413 L |
1245 | || (peek >= 'a' && peek <= 'z') |
1246 | || peek == 'C' || peek == 'D' | |
1247 | || peek == 'S') | |
1248 | { | |
1249 | /* We have another level of scope qualification. */ | |
1250 | if (nested) | |
bc9bf259 | 1251 | RETURN_IF_ERROR (result_add (dm, NAMESPACE_SEPARATOR)); |
eb383413 L |
1252 | else |
1253 | nested = 1; | |
1254 | ||
1255 | if (peek == 'S') | |
1256 | /* The substitution determines whether this is a | |
74bcd529 DD |
1257 | template-id. */ |
1258 | RETURN_IF_ERROR (demangle_substitution (dm, encode_return_type)); | |
eb383413 L |
1259 | else |
1260 | { | |
74bcd529 DD |
1261 | /* It's just a name. */ |
1262 | RETURN_IF_ERROR | |
1263 | (demangle_unqualified_name (dm, &suppress_return_type)); | |
1264 | *encode_return_type = 0; | |
eb383413 L |
1265 | } |
1266 | } | |
1267 | else if (peek == 'Z') | |
1268 | RETURN_IF_ERROR (demangle_local_name (dm)); | |
1269 | else if (peek == 'I') | |
1270 | { | |
eb383413 | 1271 | RETURN_IF_ERROR (demangle_template_args (dm)); |
74bcd529 DD |
1272 | |
1273 | /* Now we want to indicate to the caller that we've | |
1274 | demangled template arguments, thus the prefix was a | |
1275 | <template-prefix>. That's so that the caller knows to | |
1276 | demangle the function's return type, if this turns out to | |
1277 | be a function name. But, if it's a member template | |
1278 | constructor or a templated conversion operator, report it | |
1279 | as untemplated. Those never get encoded return types. */ | |
1280 | *encode_return_type = !suppress_return_type; | |
eb383413 L |
1281 | } |
1282 | else if (peek == 'E') | |
1283 | /* All done. */ | |
1284 | return STATUS_OK; | |
1285 | else | |
1286 | return "Unexpected character in <compound-name>."; | |
1287 | ||
74bcd529 DD |
1288 | if (peek != 'S' |
1289 | && peek_char (dm) != 'E') | |
1290 | /* Add a new substitution for the prefix thus far. */ | |
1291 | RETURN_IF_ERROR (substitution_add (dm, start, *encode_return_type)); | |
eb383413 L |
1292 | } |
1293 | } | |
1294 | ||
74bcd529 DD |
1295 | /* Demangles and emits an <unqualified-name>. If this |
1296 | <unqualified-name> is for a special function type that should never | |
1297 | have its return type encoded (particularly, a constructor or | |
1298 | conversion operator), *SUPPRESS_RETURN_TYPE is set to 1; otherwise, | |
1299 | it is set to zero. | |
eb383413 L |
1300 | |
1301 | <unqualified-name> ::= <operator-name> | |
1302 | ::= <special-name> | |
1303 | ::= <source-name> */ | |
1304 | ||
1305 | static status_t | |
74bcd529 | 1306 | demangle_unqualified_name (dm, suppress_return_type) |
eb383413 | 1307 | demangling_t dm; |
74bcd529 | 1308 | int *suppress_return_type; |
eb383413 L |
1309 | { |
1310 | char peek = peek_char (dm); | |
1311 | ||
1312 | DEMANGLE_TRACE ("unqualified-name", dm); | |
1313 | ||
74bcd529 DD |
1314 | /* By default, don't force suppression of the return type (though |
1315 | non-template functions still don't get a return type encoded). */ | |
1316 | *suppress_return_type = 0; | |
1317 | ||
03d5f569 | 1318 | if (IS_DIGIT ((unsigned char) peek)) |
eb383413 L |
1319 | RETURN_IF_ERROR (demangle_source_name (dm)); |
1320 | else if (peek >= 'a' && peek <= 'z') | |
1321 | { | |
1322 | int num_args; | |
74bcd529 DD |
1323 | |
1324 | /* Conversion operators never have a return type encoded. */ | |
1325 | if (peek == 'c' && peek_char_next (dm) == 'v') | |
1326 | *suppress_return_type = 1; | |
1327 | ||
793011ca | 1328 | RETURN_IF_ERROR (demangle_operator_name (dm, 0, &num_args, NULL)); |
eb383413 L |
1329 | } |
1330 | else if (peek == 'C' || peek == 'D') | |
74bcd529 DD |
1331 | { |
1332 | /* Constructors never have a return type encoded. */ | |
1333 | if (peek == 'C') | |
1334 | *suppress_return_type = 1; | |
1335 | ||
1336 | RETURN_IF_ERROR (demangle_ctor_dtor_name (dm)); | |
1337 | } | |
eb383413 L |
1338 | else |
1339 | return "Unexpected character in <unqualified-name>."; | |
1340 | ||
1341 | return STATUS_OK; | |
1342 | } | |
1343 | ||
1344 | /* Demangles and emits <source-name>. | |
1345 | ||
1346 | <source-name> ::= <length number> <identifier> */ | |
1347 | ||
1348 | static status_t | |
1349 | demangle_source_name (dm) | |
1350 | demangling_t dm; | |
1351 | { | |
1352 | int length; | |
1353 | ||
1354 | DEMANGLE_TRACE ("source-name", dm); | |
1355 | ||
1356 | /* Decode the length of the identifier. */ | |
1357 | RETURN_IF_ERROR (demangle_number (dm, &length, 10, 0)); | |
1358 | if (length == 0) | |
1359 | return "Zero length in <source-name>."; | |
1360 | ||
1361 | /* Now the identifier itself. It's placed into last_source_name, | |
1362 | where it can be used to build a constructor or destructor name. */ | |
1363 | RETURN_IF_ERROR (demangle_identifier (dm, length, | |
1364 | dm->last_source_name)); | |
1365 | ||
1366 | /* Emit it. */ | |
59666b35 | 1367 | RETURN_IF_ERROR (result_add_string (dm, dm->last_source_name)); |
eb383413 L |
1368 | |
1369 | return STATUS_OK; | |
1370 | } | |
1371 | ||
1372 | /* Demangles a number, either a <number> or a <positive-number> at the | |
1373 | current position, consuming all consecutive digit characters. Sets | |
1374 | *VALUE to the resulting numberand returns STATUS_OK. The number is | |
1375 | interpreted as BASE, which must be either 10 or 36. If IS_SIGNED | |
1376 | is non-zero, negative numbers -- prefixed with `n' -- are accepted. | |
1377 | ||
1378 | <number> ::= [n] <positive-number> | |
1379 | ||
1380 | <positive-number> ::= <decimal integer> */ | |
1381 | ||
1382 | static status_t | |
1383 | demangle_number (dm, value, base, is_signed) | |
1384 | demangling_t dm; | |
1385 | int *value; | |
1386 | int base; | |
1387 | int is_signed; | |
1388 | { | |
1389 | dyn_string_t number = dyn_string_new (10); | |
1390 | ||
1391 | DEMANGLE_TRACE ("number", dm); | |
1392 | ||
03d5f569 JM |
1393 | if (number == NULL) |
1394 | return STATUS_ALLOCATION_FAILED; | |
1395 | ||
eb383413 L |
1396 | demangle_number_literally (dm, number, base, is_signed); |
1397 | *value = strtol (dyn_string_buf (number), NULL, base); | |
1398 | dyn_string_delete (number); | |
1399 | ||
1400 | return STATUS_OK; | |
1401 | } | |
1402 | ||
1403 | /* Demangles a number at the current position. The digits (and minus | |
1404 | sign, if present) that make up the number are appended to STR. | |
1405 | Only base-BASE digits are accepted; BASE must be either 10 or 36. | |
1406 | If IS_SIGNED, negative numbers -- prefixed with `n' -- are | |
1407 | accepted. Does not consume a trailing underscore or other | |
1408 | terminating character. */ | |
1409 | ||
1410 | static status_t | |
1411 | demangle_number_literally (dm, str, base, is_signed) | |
1412 | demangling_t dm; | |
1413 | dyn_string_t str; | |
1414 | int base; | |
1415 | int is_signed; | |
1416 | { | |
1417 | DEMANGLE_TRACE ("number*", dm); | |
1418 | ||
1419 | if (base != 10 && base != 36) | |
1420 | return STATUS_INTERNAL_ERROR; | |
1421 | ||
1422 | /* An `n' denotes a negative number. */ | |
1423 | if (is_signed && peek_char (dm) == 'n') | |
1424 | { | |
1425 | /* Skip past the n. */ | |
1426 | advance_char (dm); | |
1427 | /* The normal way to write a negative number is with a minus | |
1428 | sign. */ | |
03d5f569 JM |
1429 | if (!dyn_string_append_char (str, '-')) |
1430 | return STATUS_ALLOCATION_FAILED; | |
eb383413 L |
1431 | } |
1432 | ||
1433 | /* Loop until we hit a non-digit. */ | |
1434 | while (1) | |
1435 | { | |
1436 | char peek = peek_char (dm); | |
03d5f569 | 1437 | if (IS_DIGIT ((unsigned char) peek) |
eb383413 | 1438 | || (base == 36 && peek >= 'A' && peek <= 'Z')) |
03d5f569 JM |
1439 | { |
1440 | /* Accumulate digits. */ | |
1441 | if (!dyn_string_append_char (str, next_char (dm))) | |
1442 | return STATUS_ALLOCATION_FAILED; | |
1443 | } | |
eb383413 L |
1444 | else |
1445 | /* Not a digit? All done. */ | |
1446 | break; | |
1447 | } | |
1448 | ||
1449 | return STATUS_OK; | |
1450 | } | |
1451 | ||
1452 | /* Demangles an identifier at the current position of LENGTH | |
1453 | characters and places it in IDENTIFIER. */ | |
1454 | ||
1455 | static status_t | |
1456 | demangle_identifier (dm, length, identifier) | |
1457 | demangling_t dm; | |
1458 | int length; | |
1459 | dyn_string_t identifier; | |
1460 | { | |
1461 | DEMANGLE_TRACE ("identifier", dm); | |
1462 | ||
1463 | dyn_string_clear (identifier); | |
03d5f569 JM |
1464 | if (!dyn_string_resize (identifier, length)) |
1465 | return STATUS_ALLOCATION_FAILED; | |
1466 | ||
eb383413 L |
1467 | while (length-- > 0) |
1468 | { | |
1469 | if (end_of_name_p (dm)) | |
1470 | return "Unexpected end of name in <identifier>."; | |
03d5f569 JM |
1471 | if (!dyn_string_append_char (identifier, next_char (dm))) |
1472 | return STATUS_ALLOCATION_FAILED; | |
eb383413 L |
1473 | } |
1474 | ||
74bcd529 DD |
1475 | /* GCC encodes anonymous namespaces using a `_GLOBAL_[_.$]N.' |
1476 | followed by the source file name and some random characters. | |
1477 | Unless we're in strict mode, decipher these names appropriately. */ | |
1478 | if (!flag_strict) | |
1479 | { | |
1480 | char *name = dyn_string_buf (identifier); | |
1481 | int prefix_length = strlen (ANONYMOUS_NAMESPACE_PREFIX); | |
1482 | ||
1483 | /* Compare the first, fixed part. */ | |
1484 | if (strncmp (name, ANONYMOUS_NAMESPACE_PREFIX, prefix_length) == 0) | |
1485 | { | |
1486 | name += prefix_length; | |
1487 | /* The next character might be a period, an underscore, or | |
1488 | dollar sign, depending on the target architecture's | |
1489 | assembler's capabilities. After that comes an `N'. */ | |
1490 | if ((*name == '.' || *name == '_' || *name == '$') | |
1491 | && *(name + 1) == 'N') | |
1492 | /* This looks like the anonymous namespace identifier. | |
1493 | Replace it with something comprehensible. */ | |
1494 | dyn_string_copy_cstr (identifier, "(anonymous namespace)"); | |
1495 | } | |
1496 | } | |
1497 | ||
eb383413 L |
1498 | return STATUS_OK; |
1499 | } | |
1500 | ||
1501 | /* Demangles and emits an <operator-name>. If SHORT_NAME is non-zero, | |
1502 | the short form is emitted; otherwise the full source form | |
1503 | (`operator +' etc.) is emitted. *NUM_ARGS is set to the number of | |
793011ca DD |
1504 | operands that the operator takes. If TYPE_ARG is non-NULL, |
1505 | *TYPE_ARG is set to 1 if the first argument is a type and 0 | |
1506 | otherwise. | |
eb383413 L |
1507 | |
1508 | <operator-name> | |
1509 | ::= nw # new | |
1510 | ::= na # new[] | |
1511 | ::= dl # delete | |
1512 | ::= da # delete[] | |
1513 | ::= ps # + (unary) | |
1514 | ::= ng # - (unary) | |
1515 | ::= ad # & (unary) | |
1516 | ::= de # * (unary) | |
1517 | ::= co # ~ | |
1518 | ::= pl # + | |
1519 | ::= mi # - | |
1520 | ::= ml # * | |
1521 | ::= dv # / | |
1522 | ::= rm # % | |
1523 | ::= an # & | |
1524 | ::= or # | | |
1525 | ::= eo # ^ | |
1526 | ::= aS # = | |
1527 | ::= pL # += | |
1528 | ::= mI # -= | |
1529 | ::= mL # *= | |
1530 | ::= dV # /= | |
1531 | ::= rM # %= | |
1532 | ::= aN # &= | |
1533 | ::= oR # |= | |
1534 | ::= eO # ^= | |
1535 | ::= ls # << | |
1536 | ::= rs # >> | |
1537 | ::= lS # <<= | |
1538 | ::= rS # >>= | |
1539 | ::= eq # == | |
1540 | ::= ne # != | |
1541 | ::= lt # < | |
1542 | ::= gt # > | |
1543 | ::= le # <= | |
1544 | ::= ge # >= | |
1545 | ::= nt # ! | |
1546 | ::= aa # && | |
1547 | ::= oo # || | |
1548 | ::= pp # ++ | |
1549 | ::= mm # -- | |
1550 | ::= cm # , | |
1551 | ::= pm # ->* | |
1552 | ::= pt # -> | |
1553 | ::= cl # () | |
1554 | ::= ix # [] | |
1555 | ::= qu # ? | |
793011ca DD |
1556 | ::= st # sizeof (a type) |
1557 | ::= sz # sizeof (an expression) | |
eb383413 | 1558 | ::= cv <type> # cast |
74bcd529 | 1559 | ::= v [0-9] <source-name> # vendor extended operator */ |
eb383413 L |
1560 | |
1561 | static status_t | |
793011ca | 1562 | demangle_operator_name (dm, short_name, num_args, type_arg) |
eb383413 L |
1563 | demangling_t dm; |
1564 | int short_name; | |
1565 | int *num_args; | |
793011ca | 1566 | int *type_arg; |
eb383413 L |
1567 | { |
1568 | struct operator_code | |
1569 | { | |
1570 | /* The mangled code for this operator. */ | |
e6450fe5 | 1571 | const char *const code; |
eb383413 | 1572 | /* The source name of this operator. */ |
e6450fe5 | 1573 | const char *const name; |
eb383413 | 1574 | /* The number of arguments this operator takes. */ |
e6450fe5 | 1575 | const int num_args; |
eb383413 L |
1576 | }; |
1577 | ||
1578 | static const struct operator_code operators[] = | |
1579 | { | |
1580 | { "aN", "&=" , 2 }, | |
1581 | { "aS", "=" , 2 }, | |
1582 | { "aa", "&&" , 2 }, | |
1583 | { "ad", "&" , 1 }, | |
1584 | { "an", "&" , 2 }, | |
1585 | { "cl", "()" , 0 }, | |
1586 | { "cm", "," , 2 }, | |
1587 | { "co", "~" , 1 }, | |
1588 | { "dV", "/=" , 2 }, | |
1589 | { "da", " delete[]", 1 }, | |
1590 | { "de", "*" , 1 }, | |
1591 | { "dl", " delete" , 1 }, | |
1592 | { "dv", "/" , 2 }, | |
1593 | { "eO", "^=" , 2 }, | |
1594 | { "eo", "^" , 2 }, | |
1595 | { "eq", "==" , 2 }, | |
1596 | { "ge", ">=" , 2 }, | |
1597 | { "gt", ">" , 2 }, | |
1598 | { "ix", "[]" , 2 }, | |
1599 | { "lS", "<<=" , 2 }, | |
1600 | { "le", "<=" , 2 }, | |
1601 | { "ls", "<<" , 2 }, | |
1602 | { "lt", "<" , 2 }, | |
1603 | { "mI", "-=" , 2 }, | |
1604 | { "mL", "*=" , 2 }, | |
1605 | { "mi", "-" , 2 }, | |
1606 | { "ml", "*" , 2 }, | |
1607 | { "mm", "--" , 1 }, | |
1608 | { "na", " new[]" , 1 }, | |
1609 | { "ne", "!=" , 2 }, | |
1610 | { "ng", "-" , 1 }, | |
1611 | { "nt", "!" , 1 }, | |
1612 | { "nw", " new" , 1 }, | |
1613 | { "oR", "|=" , 2 }, | |
1614 | { "oo", "||" , 2 }, | |
1615 | { "or", "|" , 2 }, | |
1616 | { "pL", "+=" , 2 }, | |
1617 | { "pl", "+" , 2 }, | |
1618 | { "pm", "->*" , 2 }, | |
1619 | { "pp", "++" , 1 }, | |
1620 | { "ps", "+" , 1 }, | |
74bcd529 | 1621 | { "pt", "->" , 2 }, |
eb383413 L |
1622 | { "qu", "?" , 3 }, |
1623 | { "rM", "%=" , 2 }, | |
1624 | { "rS", ">>=" , 2 }, | |
1625 | { "rm", "%" , 2 }, | |
1626 | { "rs", ">>" , 2 }, | |
1627 | { "sz", " sizeof" , 1 } | |
1628 | }; | |
1629 | ||
1630 | const int num_operators = | |
1631 | sizeof (operators) / sizeof (struct operator_code); | |
1632 | ||
1633 | int c0 = next_char (dm); | |
1634 | int c1 = next_char (dm); | |
1635 | const struct operator_code* p1 = operators; | |
1636 | const struct operator_code* p2 = operators + num_operators; | |
1637 | ||
1638 | DEMANGLE_TRACE ("operator-name", dm); | |
1639 | ||
793011ca DD |
1640 | /* Assume the first argument is not a type. */ |
1641 | if (type_arg) | |
1642 | *type_arg = 0; | |
1643 | ||
74bcd529 DD |
1644 | /* Is this a vendor-extended operator? */ |
1645 | if (c0 == 'v' && IS_DIGIT (c1)) | |
eb383413 | 1646 | { |
59666b35 | 1647 | RETURN_IF_ERROR (result_add (dm, "operator ")); |
eb383413 L |
1648 | RETURN_IF_ERROR (demangle_source_name (dm)); |
1649 | *num_args = 0; | |
1650 | return STATUS_OK; | |
1651 | } | |
1652 | ||
1653 | /* Is this a conversion operator? */ | |
1654 | if (c0 == 'c' && c1 == 'v') | |
1655 | { | |
59666b35 | 1656 | RETURN_IF_ERROR (result_add (dm, "operator ")); |
eb383413 L |
1657 | /* Demangle the converted-to type. */ |
1658 | RETURN_IF_ERROR (demangle_type (dm)); | |
1659 | *num_args = 0; | |
1660 | return STATUS_OK; | |
1661 | } | |
1662 | ||
793011ca DD |
1663 | /* Is it the sizeof variant that takes a type? */ |
1664 | if (c0 == 's' && c1 == 't') | |
1665 | { | |
1666 | RETURN_IF_ERROR (result_add (dm, " sizeof")); | |
1667 | *num_args = 1; | |
1668 | if (type_arg) | |
1669 | *type_arg = 1; | |
1670 | return STATUS_OK; | |
1671 | } | |
1672 | ||
eb383413 L |
1673 | /* Perform a binary search for the operator code. */ |
1674 | while (1) | |
1675 | { | |
1676 | const struct operator_code* p = p1 + (p2 - p1) / 2; | |
1677 | char match0 = p->code[0]; | |
1678 | char match1 = p->code[1]; | |
1679 | ||
1680 | if (c0 == match0 && c1 == match1) | |
1681 | /* Found it. */ | |
1682 | { | |
1683 | if (!short_name) | |
59666b35 DD |
1684 | RETURN_IF_ERROR (result_add (dm, "operator")); |
1685 | RETURN_IF_ERROR (result_add (dm, p->name)); | |
eb383413 L |
1686 | *num_args = p->num_args; |
1687 | ||
1688 | return STATUS_OK; | |
1689 | } | |
1690 | ||
1691 | if (p == p1) | |
1692 | /* Couldn't find it. */ | |
1693 | return "Unknown code in <operator-name>."; | |
1694 | ||
1695 | /* Try again. */ | |
1696 | if (c0 < match0 || (c0 == match0 && c1 < match1)) | |
1697 | p2 = p; | |
1698 | else | |
1699 | p1 = p; | |
1700 | } | |
1701 | } | |
1702 | ||
74bcd529 DD |
1703 | /* Demangles and omits an <nv-offset>. |
1704 | ||
1705 | <nv-offset> ::= <offset number> # non-virtual base override */ | |
1706 | ||
1707 | static status_t | |
1708 | demangle_nv_offset (dm) | |
1709 | demangling_t dm; | |
1710 | { | |
1711 | dyn_string_t number; | |
1712 | status_t status = STATUS_OK; | |
1713 | ||
1714 | DEMANGLE_TRACE ("h-offset", dm); | |
1715 | ||
1716 | /* Demangle the offset. */ | |
1717 | number = dyn_string_new (4); | |
1718 | if (number == NULL) | |
1719 | return STATUS_ALLOCATION_FAILED; | |
1720 | demangle_number_literally (dm, number, 10, 1); | |
1721 | ||
1722 | /* Don't display the offset unless in verbose mode. */ | |
1723 | if (flag_verbose) | |
1724 | { | |
59666b35 | 1725 | status = result_add (dm, " [nv:"); |
74bcd529 | 1726 | if (STATUS_NO_ERROR (status)) |
59666b35 | 1727 | status = result_add_string (dm, number); |
74bcd529 | 1728 | if (STATUS_NO_ERROR (status)) |
59666b35 | 1729 | status = result_add_char (dm, ']'); |
74bcd529 DD |
1730 | } |
1731 | ||
1732 | /* Clean up. */ | |
1733 | dyn_string_delete (number); | |
1734 | RETURN_IF_ERROR (status); | |
1735 | return STATUS_OK; | |
1736 | } | |
1737 | ||
1738 | /* Demangles and emits a <v-offset>. | |
1739 | ||
1740 | <v-offset> ::= <offset number> _ <virtual offset number> | |
1741 | # virtual base override, with vcall offset */ | |
1742 | ||
1743 | static status_t | |
1744 | demangle_v_offset (dm) | |
1745 | demangling_t dm; | |
1746 | { | |
1747 | dyn_string_t number; | |
1748 | status_t status = STATUS_OK; | |
1749 | ||
1750 | DEMANGLE_TRACE ("v-offset", dm); | |
1751 | ||
1752 | /* Demangle the offset. */ | |
1753 | number = dyn_string_new (4); | |
1754 | if (number == NULL) | |
1755 | return STATUS_ALLOCATION_FAILED; | |
1756 | demangle_number_literally (dm, number, 10, 1); | |
1757 | ||
1758 | /* Don't display the offset unless in verbose mode. */ | |
1759 | if (flag_verbose) | |
1760 | { | |
59666b35 | 1761 | status = result_add (dm, " [v:"); |
74bcd529 | 1762 | if (STATUS_NO_ERROR (status)) |
59666b35 | 1763 | status = result_add_string (dm, number); |
74bcd529 | 1764 | if (STATUS_NO_ERROR (status)) |
59666b35 | 1765 | result_add_char (dm, ','); |
74bcd529 DD |
1766 | } |
1767 | dyn_string_delete (number); | |
1768 | RETURN_IF_ERROR (status); | |
1769 | ||
1770 | /* Demangle the separator. */ | |
1771 | RETURN_IF_ERROR (demangle_char (dm, '_')); | |
1772 | ||
1773 | /* Demangle the vcall offset. */ | |
1774 | number = dyn_string_new (4); | |
1775 | if (number == NULL) | |
1776 | return STATUS_ALLOCATION_FAILED; | |
1777 | demangle_number_literally (dm, number, 10, 1); | |
1778 | ||
1779 | /* Don't display the vcall offset unless in verbose mode. */ | |
1780 | if (flag_verbose) | |
1781 | { | |
59666b35 | 1782 | status = result_add_string (dm, number); |
74bcd529 | 1783 | if (STATUS_NO_ERROR (status)) |
59666b35 | 1784 | status = result_add_char (dm, ']'); |
74bcd529 DD |
1785 | } |
1786 | dyn_string_delete (number); | |
1787 | RETURN_IF_ERROR (status); | |
1788 | ||
1789 | return STATUS_OK; | |
1790 | } | |
1791 | ||
1792 | /* Demangles and emits a <call-offset>. | |
1793 | ||
1794 | <call-offset> ::= h <nv-offset> _ | |
1795 | ::= v <v-offset> _ */ | |
1796 | ||
1797 | static status_t | |
1798 | demangle_call_offset (dm) | |
1799 | demangling_t dm; | |
1800 | { | |
1801 | DEMANGLE_TRACE ("call-offset", dm); | |
1802 | ||
1803 | switch (peek_char (dm)) | |
1804 | { | |
1805 | case 'h': | |
1806 | advance_char (dm); | |
1807 | /* Demangle the offset. */ | |
1808 | RETURN_IF_ERROR (demangle_nv_offset (dm)); | |
1809 | /* Demangle the separator. */ | |
1810 | RETURN_IF_ERROR (demangle_char (dm, '_')); | |
1811 | break; | |
1812 | ||
1813 | case 'v': | |
1814 | advance_char (dm); | |
1815 | /* Demangle the offset. */ | |
1816 | RETURN_IF_ERROR (demangle_v_offset (dm)); | |
1817 | /* Demangle the separator. */ | |
1818 | RETURN_IF_ERROR (demangle_char (dm, '_')); | |
1819 | break; | |
1820 | ||
1821 | default: | |
1822 | return "Unrecognized <call-offset>."; | |
1823 | } | |
1824 | ||
1825 | return STATUS_OK; | |
1826 | } | |
1827 | ||
eb383413 L |
1828 | /* Demangles and emits a <special-name>. |
1829 | ||
1830 | <special-name> ::= GV <object name> # Guard variable | |
eb383413 L |
1831 | ::= TV <type> # virtual table |
1832 | ::= TT <type> # VTT | |
1833 | ::= TI <type> # typeinfo structure | |
1834 | ::= TS <type> # typeinfo name | |
1835 | ||
74bcd529 DD |
1836 | Other relevant productions include thunks: |
1837 | ||
1838 | <special-name> ::= T <call-offset> <base encoding> | |
1839 | # base is the nominal target function of thunk | |
1840 | ||
1841 | <special-name> ::= Tc <call-offset> <call-offset> <base encoding> | |
1842 | # base is the nominal target function of thunk | |
1843 | # first call-offset is 'this' adjustment | |
1844 | # second call-offset is result adjustment | |
1845 | ||
1846 | where | |
1847 | ||
1848 | <call-offset> ::= h <nv-offset> _ | |
1849 | ::= v <v-offset> _ | |
1850 | ||
eb383413 L |
1851 | Also demangles the special g++ manglings, |
1852 | ||
74bcd529 | 1853 | <special-name> ::= TC <type> <offset number> _ <base type> |
eb383413 L |
1854 | # construction vtable |
1855 | ::= TF <type> # typeinfo function (old ABI only) | |
1856 | ::= TJ <type> # java Class structure */ | |
1857 | ||
1858 | static status_t | |
1859 | demangle_special_name (dm) | |
1860 | demangling_t dm; | |
1861 | { | |
1862 | dyn_string_t number; | |
1863 | int unused; | |
1864 | char peek = peek_char (dm); | |
1865 | ||
1866 | DEMANGLE_TRACE ("special-name", dm); | |
1867 | ||
1868 | if (peek == 'G') | |
1869 | { | |
e7e9b069 | 1870 | /* Consume the G. */ |
eb383413 | 1871 | advance_char (dm); |
e7e9b069 DD |
1872 | switch (peek_char (dm)) |
1873 | { | |
1874 | case 'V': | |
1875 | /* A guard variable name. */ | |
1876 | advance_char (dm); | |
1877 | RETURN_IF_ERROR (result_add (dm, "guard variable for ")); | |
1878 | RETURN_IF_ERROR (demangle_name (dm, &unused)); | |
1879 | break; | |
1880 | ||
1881 | case 'R': | |
1882 | /* A reference temporary. */ | |
1883 | advance_char (dm); | |
1884 | RETURN_IF_ERROR (result_add (dm, "reference temporary for ")); | |
1885 | RETURN_IF_ERROR (demangle_name (dm, &unused)); | |
1886 | break; | |
1887 | ||
1888 | default: | |
1889 | return "Unrecognized <special-name>."; | |
1890 | } | |
eb383413 L |
1891 | } |
1892 | else if (peek == 'T') | |
1893 | { | |
03d5f569 JM |
1894 | status_t status = STATUS_OK; |
1895 | ||
eb383413 L |
1896 | /* Other C++ implementation miscellania. Consume the T. */ |
1897 | advance_char (dm); | |
1898 | ||
1899 | switch (peek_char (dm)) | |
1900 | { | |
1901 | case 'V': | |
1902 | /* Virtual table. */ | |
1903 | advance_char (dm); | |
59666b35 | 1904 | RETURN_IF_ERROR (result_add (dm, "vtable for ")); |
eb383413 L |
1905 | RETURN_IF_ERROR (demangle_type (dm)); |
1906 | break; | |
1907 | ||
1908 | case 'T': | |
1909 | /* VTT structure. */ | |
1910 | advance_char (dm); | |
59666b35 | 1911 | RETURN_IF_ERROR (result_add (dm, "VTT for ")); |
eb383413 L |
1912 | RETURN_IF_ERROR (demangle_type (dm)); |
1913 | break; | |
1914 | ||
1915 | case 'I': | |
1916 | /* Typeinfo structure. */ | |
1917 | advance_char (dm); | |
59666b35 | 1918 | RETURN_IF_ERROR (result_add (dm, "typeinfo for ")); |
eb383413 L |
1919 | RETURN_IF_ERROR (demangle_type (dm)); |
1920 | break; | |
1921 | ||
1922 | case 'F': | |
1923 | /* Typeinfo function. Used only in old ABI with new mangling. */ | |
1924 | advance_char (dm); | |
59666b35 | 1925 | RETURN_IF_ERROR (result_add (dm, "typeinfo fn for ")); |
eb383413 L |
1926 | RETURN_IF_ERROR (demangle_type (dm)); |
1927 | break; | |
1928 | ||
1929 | case 'S': | |
1930 | /* Character string containing type name, used in typeinfo. */ | |
1931 | advance_char (dm); | |
59666b35 | 1932 | RETURN_IF_ERROR (result_add (dm, "typeinfo name for ")); |
eb383413 L |
1933 | RETURN_IF_ERROR (demangle_type (dm)); |
1934 | break; | |
1935 | ||
1936 | case 'J': | |
1937 | /* The java Class variable corresponding to a C++ class. */ | |
1938 | advance_char (dm); | |
59666b35 | 1939 | RETURN_IF_ERROR (result_add (dm, "java Class for ")); |
eb383413 L |
1940 | RETURN_IF_ERROR (demangle_type (dm)); |
1941 | break; | |
1942 | ||
1943 | case 'h': | |
1944 | /* Non-virtual thunk. */ | |
1945 | advance_char (dm); | |
59666b35 | 1946 | RETURN_IF_ERROR (result_add (dm, "non-virtual thunk")); |
74bcd529 | 1947 | RETURN_IF_ERROR (demangle_nv_offset (dm)); |
eb383413 L |
1948 | /* Demangle the separator. */ |
1949 | RETURN_IF_ERROR (demangle_char (dm, '_')); | |
1950 | /* Demangle and emit the target name and function type. */ | |
59666b35 | 1951 | RETURN_IF_ERROR (result_add (dm, " to ")); |
eb383413 L |
1952 | RETURN_IF_ERROR (demangle_encoding (dm)); |
1953 | break; | |
1954 | ||
1955 | case 'v': | |
1956 | /* Virtual thunk. */ | |
1957 | advance_char (dm); | |
59666b35 | 1958 | RETURN_IF_ERROR (result_add (dm, "virtual thunk")); |
74bcd529 | 1959 | RETURN_IF_ERROR (demangle_v_offset (dm)); |
eb383413 L |
1960 | /* Demangle the separator. */ |
1961 | RETURN_IF_ERROR (demangle_char (dm, '_')); | |
1962 | /* Demangle and emit the target function. */ | |
59666b35 | 1963 | RETURN_IF_ERROR (result_add (dm, " to ")); |
74bcd529 DD |
1964 | RETURN_IF_ERROR (demangle_encoding (dm)); |
1965 | break; | |
1966 | ||
1967 | case 'c': | |
1968 | /* Covariant return thunk. */ | |
1969 | advance_char (dm); | |
59666b35 | 1970 | RETURN_IF_ERROR (result_add (dm, "covariant return thunk")); |
74bcd529 DD |
1971 | RETURN_IF_ERROR (demangle_call_offset (dm)); |
1972 | RETURN_IF_ERROR (demangle_call_offset (dm)); | |
1973 | /* Demangle and emit the target function. */ | |
59666b35 | 1974 | RETURN_IF_ERROR (result_add (dm, " to ")); |
eb383413 L |
1975 | RETURN_IF_ERROR (demangle_encoding (dm)); |
1976 | break; | |
1977 | ||
1978 | case 'C': | |
1979 | /* TC is a special g++ mangling for a construction vtable. */ | |
1980 | if (!flag_strict) | |
1981 | { | |
03d5f569 JM |
1982 | dyn_string_t derived_type; |
1983 | ||
eb383413 | 1984 | advance_char (dm); |
59666b35 | 1985 | RETURN_IF_ERROR (result_add (dm, "construction vtable for ")); |
03d5f569 JM |
1986 | |
1987 | /* Demangle the derived type off to the side. */ | |
1988 | RETURN_IF_ERROR (result_push (dm)); | |
eb383413 | 1989 | RETURN_IF_ERROR (demangle_type (dm)); |
03d5f569 JM |
1990 | derived_type = (dyn_string_t) result_pop (dm); |
1991 | ||
eb383413 L |
1992 | /* Demangle the offset. */ |
1993 | number = dyn_string_new (4); | |
03d5f569 JM |
1994 | if (number == NULL) |
1995 | { | |
1996 | dyn_string_delete (derived_type); | |
1997 | return STATUS_ALLOCATION_FAILED; | |
1998 | } | |
eb383413 L |
1999 | demangle_number_literally (dm, number, 10, 1); |
2000 | /* Demangle the underscore separator. */ | |
03d5f569 JM |
2001 | status = demangle_char (dm, '_'); |
2002 | ||
eb383413 | 2003 | /* Demangle the base type. */ |
03d5f569 JM |
2004 | if (STATUS_NO_ERROR (status)) |
2005 | status = demangle_type (dm); | |
2006 | ||
2007 | /* Emit the derived type. */ | |
2008 | if (STATUS_NO_ERROR (status)) | |
59666b35 | 2009 | status = result_add (dm, "-in-"); |
03d5f569 | 2010 | if (STATUS_NO_ERROR (status)) |
59666b35 | 2011 | status = result_add_string (dm, derived_type); |
03d5f569 JM |
2012 | dyn_string_delete (derived_type); |
2013 | ||
eb383413 L |
2014 | /* Don't display the offset unless in verbose mode. */ |
2015 | if (flag_verbose) | |
2016 | { | |
59666b35 | 2017 | status = result_add_char (dm, ' '); |
03d5f569 | 2018 | if (STATUS_NO_ERROR (status)) |
59666b35 | 2019 | result_add_string (dm, number); |
eb383413 L |
2020 | } |
2021 | dyn_string_delete (number); | |
03d5f569 | 2022 | RETURN_IF_ERROR (status); |
eb383413 L |
2023 | break; |
2024 | } | |
2025 | /* If flag_strict, fall through. */ | |
2026 | ||
2027 | default: | |
2028 | return "Unrecognized <special-name>."; | |
2029 | } | |
2030 | } | |
2031 | else | |
2032 | return STATUS_ERROR; | |
2033 | ||
2034 | return STATUS_OK; | |
2035 | } | |
2036 | ||
2037 | /* Demangles and emits a <ctor-dtor-name>. | |
2038 | ||
2039 | <ctor-dtor-name> | |
2040 | ::= C1 # complete object (in-charge) ctor | |
2041 | ::= C2 # base object (not-in-charge) ctor | |
2042 | ::= C3 # complete object (in-charge) allocating ctor | |
eb383413 L |
2043 | ::= D0 # deleting (in-charge) dtor |
2044 | ::= D1 # complete object (in-charge) dtor | |
2045 | ::= D2 # base object (not-in-charge) dtor */ | |
2046 | ||
2047 | static status_t | |
2048 | demangle_ctor_dtor_name (dm) | |
2049 | demangling_t dm; | |
2050 | { | |
2051 | static const char *const ctor_flavors[] = | |
2052 | { | |
2053 | "in-charge", | |
2054 | "not-in-charge", | |
74bcd529 | 2055 | "allocating" |
eb383413 L |
2056 | }; |
2057 | static const char *const dtor_flavors[] = | |
2058 | { | |
2059 | "in-charge deleting", | |
2060 | "in-charge", | |
2061 | "not-in-charge" | |
2062 | }; | |
2063 | ||
2064 | int flavor; | |
2065 | char peek = peek_char (dm); | |
2066 | ||
2067 | DEMANGLE_TRACE ("ctor-dtor-name", dm); | |
2068 | ||
2069 | if (peek == 'C') | |
2070 | { | |
2071 | /* A constructor name. Consume the C. */ | |
2072 | advance_char (dm); | |
e61231f1 JB |
2073 | flavor = next_char (dm); |
2074 | if (flavor < '1' || flavor > '3') | |
eb383413 | 2075 | return "Unrecognized constructor."; |
59666b35 | 2076 | RETURN_IF_ERROR (result_add_string (dm, dm->last_source_name)); |
e61231f1 JB |
2077 | switch (flavor) |
2078 | { | |
2079 | case '1': dm->is_constructor = gnu_v3_complete_object_ctor; | |
2080 | break; | |
2081 | case '2': dm->is_constructor = gnu_v3_base_object_ctor; | |
2082 | break; | |
2083 | case '3': dm->is_constructor = gnu_v3_complete_object_allocating_ctor; | |
2084 | break; | |
2085 | } | |
eb383413 | 2086 | /* Print the flavor of the constructor if in verbose mode. */ |
eb383413 L |
2087 | if (flag_verbose) |
2088 | { | |
59666b35 | 2089 | RETURN_IF_ERROR (result_add (dm, "[")); |
e61231f1 | 2090 | RETURN_IF_ERROR (result_add (dm, ctor_flavors[flavor - '1'])); |
59666b35 | 2091 | RETURN_IF_ERROR (result_add_char (dm, ']')); |
eb383413 L |
2092 | } |
2093 | } | |
2094 | else if (peek == 'D') | |
2095 | { | |
2096 | /* A destructor name. Consume the D. */ | |
2097 | advance_char (dm); | |
e61231f1 JB |
2098 | flavor = next_char (dm); |
2099 | if (flavor < '0' || flavor > '2') | |
eb383413 | 2100 | return "Unrecognized destructor."; |
59666b35 DD |
2101 | RETURN_IF_ERROR (result_add_char (dm, '~')); |
2102 | RETURN_IF_ERROR (result_add_string (dm, dm->last_source_name)); | |
e61231f1 JB |
2103 | switch (flavor) |
2104 | { | |
2105 | case '0': dm->is_destructor = gnu_v3_deleting_dtor; | |
2106 | break; | |
2107 | case '1': dm->is_destructor = gnu_v3_complete_object_dtor; | |
2108 | break; | |
2109 | case '2': dm->is_destructor = gnu_v3_base_object_dtor; | |
2110 | break; | |
2111 | } | |
eb383413 | 2112 | /* Print the flavor of the destructor if in verbose mode. */ |
eb383413 L |
2113 | if (flag_verbose) |
2114 | { | |
59666b35 | 2115 | RETURN_IF_ERROR (result_add (dm, " [")); |
e61231f1 | 2116 | RETURN_IF_ERROR (result_add (dm, dtor_flavors[flavor - '0'])); |
59666b35 | 2117 | RETURN_IF_ERROR (result_add_char (dm, ']')); |
eb383413 L |
2118 | } |
2119 | } | |
2120 | else | |
2121 | return STATUS_ERROR; | |
2122 | ||
2123 | return STATUS_OK; | |
2124 | } | |
2125 | ||
2126 | /* Handle pointer, reference, and pointer-to-member cases for | |
2127 | demangle_type. All consecutive `P's, `R's, and 'M's are joined to | |
2128 | build a pointer/reference type. We snarf all these, plus the | |
2129 | following <type>, all at once since we need to know whether we have | |
2130 | a pointer to data or pointer to function to construct the right | |
2131 | output syntax. C++'s pointer syntax is hairy. | |
2132 | ||
74bcd529 DD |
2133 | This function adds substitution candidates for every nested |
2134 | pointer/reference type it processes, including the outermost, final | |
2135 | type, assuming the substitution starts at SUBSTITUTION_START in the | |
2136 | demangling result. For example, if this function demangles | |
2137 | `PP3Foo', it will add a substitution for `Foo', `Foo*', and | |
2138 | `Foo**', in that order. | |
2139 | ||
2140 | *INSERT_POS is a quantity used internally, when this function calls | |
2141 | itself recursively, to figure out where to insert pointer | |
2142 | punctuation on the way up. On entry to this function, INSERT_POS | |
2143 | should point to a temporary value, but that value need not be | |
2144 | initialized. | |
2145 | ||
eb383413 L |
2146 | <type> ::= P <type> |
2147 | ::= R <type> | |
2148 | ::= <pointer-to-member-type> | |
2149 | ||
2150 | <pointer-to-member-type> ::= M </class/ type> </member/ type> */ | |
2151 | ||
2152 | static status_t | |
74bcd529 | 2153 | demangle_type_ptr (dm, insert_pos, substitution_start) |
eb383413 | 2154 | demangling_t dm; |
74bcd529 DD |
2155 | int *insert_pos; |
2156 | int substitution_start; | |
eb383413 | 2157 | { |
eb383413 | 2158 | status_t status; |
74bcd529 | 2159 | int is_substitution_candidate = 1; |
eb383413 L |
2160 | |
2161 | DEMANGLE_TRACE ("type*", dm); | |
2162 | ||
2163 | /* Scan forward, collecting pointers and references into symbols, | |
2164 | until we hit something else. Then emit the type. */ | |
59666b35 | 2165 | switch (peek_char (dm)) |
eb383413 | 2166 | { |
59666b35 | 2167 | case 'P': |
74bcd529 DD |
2168 | /* A pointer. Snarf the `P'. */ |
2169 | advance_char (dm); | |
2170 | /* Demangle the underlying type. */ | |
2171 | RETURN_IF_ERROR (demangle_type_ptr (dm, insert_pos, | |
2172 | substitution_start)); | |
2173 | /* Insert an asterisk where we're told to; it doesn't | |
bc9bf259 DD |
2174 | necessarily go at the end. If we're doing Java style output, |
2175 | there is no pointer symbol. */ | |
2176 | if (dm->style != DMGL_JAVA) | |
2177 | RETURN_IF_ERROR (result_insert_char (dm, *insert_pos, '*')); | |
74bcd529 DD |
2178 | /* The next (outermost) pointer or reference character should go |
2179 | after this one. */ | |
2180 | ++(*insert_pos); | |
59666b35 DD |
2181 | break; |
2182 | ||
2183 | case 'R': | |
74bcd529 DD |
2184 | /* A reference. Snarf the `R'. */ |
2185 | advance_char (dm); | |
2186 | /* Demangle the underlying type. */ | |
2187 | RETURN_IF_ERROR (demangle_type_ptr (dm, insert_pos, | |
2188 | substitution_start)); | |
2189 | /* Insert an ampersand where we're told to; it doesn't | |
2190 | necessarily go at the end. */ | |
2191 | RETURN_IF_ERROR (result_insert_char (dm, *insert_pos, '&')); | |
2192 | /* The next (outermost) pointer or reference character should go | |
2193 | after this one. */ | |
2194 | ++(*insert_pos); | |
59666b35 DD |
2195 | break; |
2196 | ||
2197 | case 'M': | |
74bcd529 DD |
2198 | { |
2199 | /* A pointer-to-member. */ | |
2200 | dyn_string_t class_type; | |
2201 | ||
2202 | /* Eat the 'M'. */ | |
2203 | advance_char (dm); | |
2204 | ||
2205 | /* Capture the type of which this is a pointer-to-member. */ | |
2206 | RETURN_IF_ERROR (result_push (dm)); | |
2207 | RETURN_IF_ERROR (demangle_type (dm)); | |
2208 | class_type = (dyn_string_t) result_pop (dm); | |
2209 | ||
2210 | if (peek_char (dm) == 'F') | |
2211 | /* A pointer-to-member function. We want output along the | |
2212 | lines of `void (C::*) (int, int)'. Demangle the function | |
2213 | type, which would in this case give `void () (int, int)' | |
2214 | and set *insert_pos to the spot between the first | |
2215 | parentheses. */ | |
2216 | status = demangle_type_ptr (dm, insert_pos, substitution_start); | |
59666b35 DD |
2217 | else if (peek_char (dm) == 'A') |
2218 | /* A pointer-to-member array variable. We want output that | |
2219 | looks like `int (Klass::*) [10]'. Demangle the array type | |
2220 | as `int () [10]', and set *insert_pos to the spot between | |
2221 | the parentheses. */ | |
2222 | status = demangle_array_type (dm, insert_pos); | |
74bcd529 DD |
2223 | else |
2224 | { | |
2225 | /* A pointer-to-member variable. Demangle the type of the | |
2226 | pointed-to member. */ | |
eb383413 L |
2227 | status = demangle_type (dm); |
2228 | /* Make it pretty. */ | |
59666b35 DD |
2229 | if (STATUS_NO_ERROR (status) |
2230 | && !result_previous_char_is_space (dm)) | |
2231 | status = result_add_char (dm, ' '); | |
74bcd529 DD |
2232 | /* The pointer-to-member notation (e.g. `C::*') follows the |
2233 | member's type. */ | |
59666b35 | 2234 | *insert_pos = result_caret_pos (dm); |
eb383413 | 2235 | } |
eb383413 | 2236 | |
74bcd529 DD |
2237 | /* Build the pointer-to-member notation. */ |
2238 | if (STATUS_NO_ERROR (status)) | |
2239 | status = result_insert (dm, *insert_pos, "::*"); | |
2240 | if (STATUS_NO_ERROR (status)) | |
2241 | status = result_insert_string (dm, *insert_pos, class_type); | |
2242 | /* There may be additional levels of (pointer or reference) | |
2243 | indirection in this type. If so, the `*' and `&' should be | |
2244 | added after the pointer-to-member notation (e.g. `C::*&' for | |
2245 | a reference to a pointer-to-member of class C). */ | |
2246 | *insert_pos += dyn_string_length (class_type) + 3; | |
eb383413 | 2247 | |
74bcd529 DD |
2248 | /* Clean up. */ |
2249 | dyn_string_delete (class_type); | |
eb383413 | 2250 | |
74bcd529 | 2251 | RETURN_IF_ERROR (status); |
eb383413 | 2252 | } |
59666b35 DD |
2253 | break; |
2254 | ||
2255 | case 'F': | |
74bcd529 DD |
2256 | /* Ooh, tricky, a pointer-to-function. When we demangle the |
2257 | function type, the return type should go at the very | |
2258 | beginning. */ | |
59666b35 | 2259 | *insert_pos = result_caret_pos (dm); |
74bcd529 DD |
2260 | /* The parentheses indicate this is a function pointer or |
2261 | reference type. */ | |
59666b35 | 2262 | RETURN_IF_ERROR (result_add (dm, "()")); |
74bcd529 DD |
2263 | /* Now demangle the function type. The return type will be |
2264 | inserted before the `()', and the argument list will go after | |
2265 | it. */ | |
2266 | RETURN_IF_ERROR (demangle_function_type (dm, insert_pos)); | |
2267 | /* We should now have something along the lines of | |
2268 | `void () (int, int)'. The pointer or reference characters | |
2269 | have to inside the first set of parentheses. *insert_pos has | |
2270 | already been updated to point past the end of the return | |
2271 | type. Move it one character over so it points inside the | |
2272 | `()'. */ | |
2273 | ++(*insert_pos); | |
59666b35 DD |
2274 | break; |
2275 | ||
2276 | case 'A': | |
2277 | /* An array pointer or reference. demangle_array_type will figure | |
2278 | out where the asterisks and ampersands go. */ | |
2279 | RETURN_IF_ERROR (demangle_array_type (dm, insert_pos)); | |
2280 | break; | |
2281 | ||
2282 | default: | |
74bcd529 DD |
2283 | /* No more pointer or reference tokens; this is therefore a |
2284 | pointer to data. Finish up by demangling the underlying | |
2285 | type. */ | |
2286 | RETURN_IF_ERROR (demangle_type (dm)); | |
2287 | /* The pointer or reference characters follow the underlying | |
2288 | type, as in `int*&'. */ | |
59666b35 | 2289 | *insert_pos = result_caret_pos (dm); |
74bcd529 DD |
2290 | /* Because of the production <type> ::= <substitution>, |
2291 | demangle_type will already have added the underlying type as | |
2292 | a substitution candidate. Don't do it again. */ | |
2293 | is_substitution_candidate = 0; | |
59666b35 | 2294 | break; |
74bcd529 DD |
2295 | } |
2296 | ||
2297 | if (is_substitution_candidate) | |
2298 | RETURN_IF_ERROR (substitution_add (dm, substitution_start, 0)); | |
2299 | ||
2300 | return STATUS_OK; | |
eb383413 L |
2301 | } |
2302 | ||
2303 | /* Demangles and emits a <type>. | |
2304 | ||
2305 | <type> ::= <builtin-type> | |
2306 | ::= <function-type> | |
2307 | ::= <class-enum-type> | |
2308 | ::= <array-type> | |
2309 | ::= <pointer-to-member-type> | |
2310 | ::= <template-param> | |
74bcd529 | 2311 | ::= <template-template-param> <template-args> |
eb383413 L |
2312 | ::= <CV-qualifiers> <type> |
2313 | ::= P <type> # pointer-to | |
2314 | ::= R <type> # reference-to | |
2315 | ::= C <type> # complex pair (C 2000) | |
2316 | ::= G <type> # imaginary (C 2000) | |
2317 | ::= U <source-name> <type> # vendor extended type qualifier | |
2318 | ::= <substitution> */ | |
2319 | ||
2320 | static status_t | |
2321 | demangle_type (dm) | |
2322 | demangling_t dm; | |
2323 | { | |
2324 | int start = substitution_start (dm); | |
2325 | char peek = peek_char (dm); | |
03d5f569 | 2326 | char peek_next; |
74bcd529 | 2327 | int encode_return_type = 0; |
eb383413 | 2328 | template_arg_list_t old_arg_list = current_template_arg_list (dm); |
74bcd529 DD |
2329 | int insert_pos; |
2330 | ||
2331 | /* A <type> can be a <substitution>; therefore, this <type> is a | |
2332 | substitution candidate unless a special condition holds (see | |
2333 | below). */ | |
2334 | int is_substitution_candidate = 1; | |
eb383413 L |
2335 | |
2336 | DEMANGLE_TRACE ("type", dm); | |
2337 | ||
2338 | /* A <class-enum-type> can start with a digit (a <source-name>), an | |
2339 | N (a <nested-name>), or a Z (a <local-name>). */ | |
03d5f569 | 2340 | if (IS_DIGIT ((unsigned char) peek) || peek == 'N' || peek == 'Z') |
74bcd529 DD |
2341 | RETURN_IF_ERROR (demangle_class_enum_type (dm, &encode_return_type)); |
2342 | /* Lower-case letters begin <builtin-type>s, except for `r', which | |
2343 | denotes restrict. */ | |
2344 | else if (peek >= 'a' && peek <= 'z' && peek != 'r') | |
eb383413 L |
2345 | { |
2346 | RETURN_IF_ERROR (demangle_builtin_type (dm)); | |
74bcd529 DD |
2347 | /* Built-in types are not substitution candidates. */ |
2348 | is_substitution_candidate = 0; | |
eb383413 L |
2349 | } |
2350 | else | |
2351 | switch (peek) | |
2352 | { | |
2353 | case 'r': | |
2354 | case 'V': | |
2355 | case 'K': | |
74bcd529 DD |
2356 | /* CV-qualifiers (including restrict). We have to demangle |
2357 | them off to the side, since C++ syntax puts them in a funny | |
2358 | place for qualified pointer and reference types. */ | |
eb383413 L |
2359 | { |
2360 | status_t status; | |
2361 | dyn_string_t cv_qualifiers = dyn_string_new (24); | |
59666b35 | 2362 | int old_caret_position = result_get_caret (dm); |
03d5f569 JM |
2363 | |
2364 | if (cv_qualifiers == NULL) | |
2365 | return STATUS_ALLOCATION_FAILED; | |
2366 | ||
59666b35 | 2367 | /* Decode all adjacent CV qualifiers. */ |
eb383413 | 2368 | demangle_CV_qualifiers (dm, cv_qualifiers); |
59666b35 DD |
2369 | /* Emit them, and shift the caret left so that the |
2370 | underlying type will be emitted before the qualifiers. */ | |
2371 | status = result_add_string (dm, cv_qualifiers); | |
2372 | result_shift_caret (dm, -dyn_string_length (cv_qualifiers)); | |
2373 | /* Clean up. */ | |
eb383413 L |
2374 | dyn_string_delete (cv_qualifiers); |
2375 | RETURN_IF_ERROR (status); | |
59666b35 DD |
2376 | /* Also prepend a blank, if needed. */ |
2377 | RETURN_IF_ERROR (result_add_char (dm, ' ')); | |
2378 | result_shift_caret (dm, -1); | |
2379 | ||
2380 | /* Demangle the underlying type. It will be emitted before | |
2381 | the CV qualifiers, since we moved the caret. */ | |
2382 | RETURN_IF_ERROR (demangle_type (dm)); | |
2383 | ||
2384 | /* Put the caret back where it was previously. */ | |
2385 | result_set_caret (dm, old_caret_position); | |
eb383413 L |
2386 | } |
2387 | break; | |
2388 | ||
2389 | case 'F': | |
2390 | return "Non-pointer or -reference function type."; | |
2391 | ||
2392 | case 'A': | |
59666b35 | 2393 | RETURN_IF_ERROR (demangle_array_type (dm, NULL)); |
eb383413 L |
2394 | break; |
2395 | ||
2396 | case 'T': | |
74bcd529 DD |
2397 | /* It's either a <template-param> or a |
2398 | <template-template-param>. In either case, demangle the | |
2399 | `T' token first. */ | |
2400 | RETURN_IF_ERROR (demangle_template_param (dm)); | |
2401 | ||
2402 | /* Check for a template argument list; if one is found, it's a | |
2403 | <template-template-param> ::= <template-param> | |
2404 | ::= <substitution> */ | |
2405 | if (peek_char (dm) == 'I') | |
2406 | { | |
2407 | /* Add a substitution candidate. The template parameter | |
2408 | `T' token is a substitution candidate by itself, | |
2409 | without the template argument list. */ | |
2410 | RETURN_IF_ERROR (substitution_add (dm, start, encode_return_type)); | |
2411 | ||
2412 | /* Now demangle the template argument list. */ | |
2413 | RETURN_IF_ERROR (demangle_template_args (dm)); | |
2414 | /* The entire type, including the template template | |
2415 | parameter and its argument list, will be added as a | |
2416 | substitution candidate below. */ | |
2417 | } | |
2418 | ||
eb383413 L |
2419 | break; |
2420 | ||
2421 | case 'S': | |
03d5f569 JM |
2422 | /* First check if this is a special substitution. If it is, |
2423 | this is a <class-enum-type>. Special substitutions have a | |
2424 | letter following the `S'; other substitutions have a digit | |
2425 | or underscore. */ | |
2426 | peek_next = peek_char_next (dm); | |
2427 | if (IS_DIGIT (peek_next) || peek_next == '_') | |
74bcd529 DD |
2428 | { |
2429 | RETURN_IF_ERROR (demangle_substitution (dm, &encode_return_type)); | |
2430 | ||
2431 | /* The substituted name may have been a template name. | |
2432 | Check if template arguments follow, and if so, demangle | |
2433 | them. */ | |
2434 | if (peek_char (dm) == 'I') | |
2435 | RETURN_IF_ERROR (demangle_template_args (dm)); | |
2436 | else | |
2437 | /* A substitution token is not itself a substitution | |
2438 | candidate. (However, if the substituted template is | |
2439 | instantiated, the resulting type is.) */ | |
2440 | is_substitution_candidate = 0; | |
2441 | } | |
03d5f569 | 2442 | else |
74bcd529 DD |
2443 | { |
2444 | /* Now some trickiness. We have a special substitution | |
2445 | here. Often, the special substitution provides the | |
2446 | name of a template that's subsequently instantiated, | |
2447 | for instance `SaIcE' => std::allocator<char>. In these | |
2448 | cases we need to add a substitution candidate for the | |
2449 | entire <class-enum-type> and thus don't want to clear | |
2450 | the is_substitution_candidate flag. | |
2451 | ||
2452 | However, it's possible that what we have here is a | |
2453 | substitution token representing an entire type, such as | |
2454 | `Ss' => std::string. In this case, we mustn't add a | |
2455 | new substitution candidate for this substitution token. | |
2456 | To detect this case, remember where the start of the | |
2457 | substitution token is. */ | |
2458 | const char *next = dm->next; | |
2459 | /* Now demangle the <class-enum-type>. */ | |
2460 | RETURN_IF_ERROR | |
2461 | (demangle_class_enum_type (dm, &encode_return_type)); | |
2462 | /* If all that was just demangled is the two-character | |
2463 | special substitution token, supress the addition of a | |
2464 | new candidate for it. */ | |
2465 | if (dm->next == next + 2) | |
2466 | is_substitution_candidate = 0; | |
2467 | } | |
2468 | ||
eb383413 L |
2469 | break; |
2470 | ||
2471 | case 'P': | |
2472 | case 'R': | |
2473 | case 'M': | |
74bcd529 DD |
2474 | RETURN_IF_ERROR (demangle_type_ptr (dm, &insert_pos, start)); |
2475 | /* demangle_type_ptr adds all applicable substitution | |
2476 | candidates. */ | |
2477 | is_substitution_candidate = 0; | |
eb383413 L |
2478 | break; |
2479 | ||
2480 | case 'C': | |
2481 | /* A C99 complex type. */ | |
59666b35 | 2482 | RETURN_IF_ERROR (result_add (dm, "complex ")); |
eb383413 L |
2483 | advance_char (dm); |
2484 | RETURN_IF_ERROR (demangle_type (dm)); | |
2485 | break; | |
2486 | ||
2487 | case 'G': | |
2488 | /* A C99 imaginary type. */ | |
59666b35 | 2489 | RETURN_IF_ERROR (result_add (dm, "imaginary ")); |
eb383413 L |
2490 | advance_char (dm); |
2491 | RETURN_IF_ERROR (demangle_type (dm)); | |
2492 | break; | |
2493 | ||
2494 | case 'U': | |
74bcd529 | 2495 | /* Vendor-extended type qualifier. */ |
eb383413 L |
2496 | advance_char (dm); |
2497 | RETURN_IF_ERROR (demangle_source_name (dm)); | |
59666b35 | 2498 | RETURN_IF_ERROR (result_add_char (dm, ' ')); |
eb383413 L |
2499 | RETURN_IF_ERROR (demangle_type (dm)); |
2500 | break; | |
2501 | ||
2502 | default: | |
2503 | return "Unexpected character in <type>."; | |
2504 | } | |
2505 | ||
74bcd529 | 2506 | if (is_substitution_candidate) |
eb383413 L |
2507 | /* Add a new substitution for the type. If this type was a |
2508 | <template-param>, pass its index since from the point of | |
74bcd529 | 2509 | substitutions; a <template-param> token is a substitution |
eb383413 | 2510 | candidate distinct from the type that is substituted for it. */ |
74bcd529 | 2511 | RETURN_IF_ERROR (substitution_add (dm, start, encode_return_type)); |
eb383413 L |
2512 | |
2513 | /* Pop off template argument lists added during mangling of this | |
2514 | type. */ | |
2515 | pop_to_template_arg_list (dm, old_arg_list); | |
2516 | ||
2517 | return STATUS_OK; | |
2518 | } | |
2519 | ||
2520 | /* C++ source names of builtin types, indexed by the mangled code | |
2521 | letter's position in the alphabet ('a' -> 0, 'b' -> 1, etc). */ | |
2522 | static const char *const builtin_type_names[26] = | |
2523 | { | |
2524 | "signed char", /* a */ | |
2525 | "bool", /* b */ | |
2526 | "char", /* c */ | |
2527 | "double", /* d */ | |
2528 | "long double", /* e */ | |
2529 | "float", /* f */ | |
2530 | "__float128", /* g */ | |
2531 | "unsigned char", /* h */ | |
2532 | "int", /* i */ | |
2533 | "unsigned", /* j */ | |
2534 | NULL, /* k */ | |
2535 | "long", /* l */ | |
2536 | "unsigned long", /* m */ | |
2537 | "__int128", /* n */ | |
2538 | "unsigned __int128", /* o */ | |
2539 | NULL, /* p */ | |
2540 | NULL, /* q */ | |
2541 | NULL, /* r */ | |
2542 | "short", /* s */ | |
2543 | "unsigned short", /* t */ | |
2544 | NULL, /* u */ | |
2545 | "void", /* v */ | |
2546 | "wchar_t", /* w */ | |
2547 | "long long", /* x */ | |
2548 | "unsigned long long", /* y */ | |
2549 | "..." /* z */ | |
2550 | }; | |
2551 | ||
bc9bf259 DD |
2552 | /* Java source names of builtin types. Types that arn't valid in Java |
2553 | are also included here - we don't fail if someone attempts to demangle a | |
2554 | C++ symbol in Java style. */ | |
2555 | static const char *const java_builtin_type_names[26] = | |
2556 | { | |
2557 | "signed char", /* a */ | |
2558 | "boolean", /* C++ "bool" */ /* b */ | |
2559 | "byte", /* C++ "char" */ /* c */ | |
2560 | "double", /* d */ | |
2561 | "long double", /* e */ | |
2562 | "float", /* f */ | |
2563 | "__float128", /* g */ | |
2564 | "unsigned char", /* h */ | |
2565 | "int", /* i */ | |
2566 | "unsigned", /* j */ | |
2567 | NULL, /* k */ | |
2568 | "long", /* l */ | |
2569 | "unsigned long", /* m */ | |
2570 | "__int128", /* n */ | |
2571 | "unsigned __int128", /* o */ | |
2572 | NULL, /* p */ | |
2573 | NULL, /* q */ | |
2574 | NULL, /* r */ | |
2575 | "short", /* s */ | |
2576 | "unsigned short", /* t */ | |
2577 | NULL, /* u */ | |
2578 | "void", /* v */ | |
2579 | "char", /* C++ "wchar_t" */ /* w */ | |
2580 | "long", /* C++ "long long" */ /* x */ | |
2581 | "unsigned long long", /* y */ | |
2582 | "..." /* z */ | |
2583 | }; | |
2584 | ||
eb383413 L |
2585 | /* Demangles and emits a <builtin-type>. |
2586 | ||
2587 | <builtin-type> ::= v # void | |
2588 | ::= w # wchar_t | |
2589 | ::= b # bool | |
2590 | ::= c # char | |
2591 | ::= a # signed char | |
2592 | ::= h # unsigned char | |
2593 | ::= s # short | |
2594 | ::= t # unsigned short | |
2595 | ::= i # int | |
2596 | ::= j # unsigned int | |
2597 | ::= l # long | |
2598 | ::= m # unsigned long | |
2599 | ::= x # long long, __int64 | |
2600 | ::= y # unsigned long long, __int64 | |
2601 | ::= n # __int128 | |
2602 | ::= o # unsigned __int128 | |
2603 | ::= f # float | |
2604 | ::= d # double | |
2605 | ::= e # long double, __float80 | |
2606 | ::= g # __float128 | |
2607 | ::= z # ellipsis | |
2608 | ::= u <source-name> # vendor extended type */ | |
2609 | ||
2610 | static status_t | |
2611 | demangle_builtin_type (dm) | |
2612 | demangling_t dm; | |
2613 | { | |
2614 | ||
2615 | char code = peek_char (dm); | |
2616 | ||
2617 | DEMANGLE_TRACE ("builtin-type", dm); | |
2618 | ||
2619 | if (code == 'u') | |
2620 | { | |
2621 | advance_char (dm); | |
2622 | RETURN_IF_ERROR (demangle_source_name (dm)); | |
2623 | return STATUS_OK; | |
2624 | } | |
2625 | else if (code >= 'a' && code <= 'z') | |
2626 | { | |
bc9bf259 DD |
2627 | const char *type_name; |
2628 | /* Java uses different names for some built-in types. */ | |
2629 | if (dm->style == DMGL_JAVA) | |
2630 | type_name = java_builtin_type_names[code - 'a']; | |
2631 | else | |
2632 | type_name = builtin_type_names[code - 'a']; | |
eb383413 L |
2633 | if (type_name == NULL) |
2634 | return "Unrecognized <builtin-type> code."; | |
2635 | ||
59666b35 | 2636 | RETURN_IF_ERROR (result_add (dm, type_name)); |
eb383413 L |
2637 | advance_char (dm); |
2638 | return STATUS_OK; | |
2639 | } | |
2640 | else | |
2641 | return "Non-alphabetic <builtin-type> code."; | |
2642 | } | |
2643 | ||
2644 | /* Demangles all consecutive CV-qualifiers (const, volatile, and | |
2645 | restrict) at the current position. The qualifiers are appended to | |
2646 | QUALIFIERS. Returns STATUS_OK. */ | |
2647 | ||
2648 | static status_t | |
2649 | demangle_CV_qualifiers (dm, qualifiers) | |
2650 | demangling_t dm; | |
2651 | dyn_string_t qualifiers; | |
2652 | { | |
2653 | DEMANGLE_TRACE ("CV-qualifiers", dm); | |
2654 | ||
2655 | while (1) | |
2656 | { | |
2657 | switch (peek_char (dm)) | |
2658 | { | |
2659 | case 'r': | |
03d5f569 JM |
2660 | if (!dyn_string_append_space (qualifiers)) |
2661 | return STATUS_ALLOCATION_FAILED; | |
2662 | if (!dyn_string_append_cstr (qualifiers, "restrict")) | |
2663 | return STATUS_ALLOCATION_FAILED; | |
eb383413 L |
2664 | break; |
2665 | ||
2666 | case 'V': | |
03d5f569 JM |
2667 | if (!dyn_string_append_space (qualifiers)) |
2668 | return STATUS_ALLOCATION_FAILED; | |
2669 | if (!dyn_string_append_cstr (qualifiers, "volatile")) | |
2670 | return STATUS_ALLOCATION_FAILED; | |
eb383413 L |
2671 | break; |
2672 | ||
2673 | case 'K': | |
03d5f569 JM |
2674 | if (!dyn_string_append_space (qualifiers)) |
2675 | return STATUS_ALLOCATION_FAILED; | |
2676 | if (!dyn_string_append_cstr (qualifiers, "const")) | |
2677 | return STATUS_ALLOCATION_FAILED; | |
eb383413 L |
2678 | break; |
2679 | ||
2680 | default: | |
2681 | return STATUS_OK; | |
2682 | } | |
2683 | ||
2684 | advance_char (dm); | |
2685 | } | |
2686 | } | |
2687 | ||
74bcd529 | 2688 | /* Demangles and emits a <function-type>. *FUNCTION_NAME_POS is the |
eb383413 | 2689 | position in the result string of the start of the function |
74bcd529 DD |
2690 | identifier, at which the function's return type will be inserted; |
2691 | *FUNCTION_NAME_POS is updated to position past the end of the | |
2692 | function's return type. | |
eb383413 L |
2693 | |
2694 | <function-type> ::= F [Y] <bare-function-type> E */ | |
2695 | ||
2696 | static status_t | |
2697 | demangle_function_type (dm, function_name_pos) | |
2698 | demangling_t dm; | |
74bcd529 | 2699 | int *function_name_pos; |
eb383413 L |
2700 | { |
2701 | DEMANGLE_TRACE ("function-type", dm); | |
2702 | RETURN_IF_ERROR (demangle_char (dm, 'F')); | |
2703 | if (peek_char (dm) == 'Y') | |
2704 | { | |
2705 | /* Indicate this function has C linkage if in verbose mode. */ | |
2706 | if (flag_verbose) | |
59666b35 | 2707 | RETURN_IF_ERROR (result_add (dm, " [extern \"C\"] ")); |
eb383413 L |
2708 | advance_char (dm); |
2709 | } | |
2710 | RETURN_IF_ERROR (demangle_bare_function_type (dm, function_name_pos)); | |
2711 | RETURN_IF_ERROR (demangle_char (dm, 'E')); | |
2712 | return STATUS_OK; | |
2713 | } | |
2714 | ||
2715 | /* Demangles and emits a <bare-function-type>. RETURN_TYPE_POS is the | |
2716 | position in the result string at which the function return type | |
2717 | should be inserted. If RETURN_TYPE_POS is BFT_NO_RETURN_TYPE, the | |
2718 | function's return type is assumed not to be encoded. | |
2719 | ||
2720 | <bare-function-type> ::= <signature type>+ */ | |
2721 | ||
2722 | static status_t | |
2723 | demangle_bare_function_type (dm, return_type_pos) | |
2724 | demangling_t dm; | |
74bcd529 | 2725 | int *return_type_pos; |
eb383413 L |
2726 | { |
2727 | /* Sequence is the index of the current function parameter, counting | |
2728 | from zero. The value -1 denotes the return type. */ | |
2729 | int sequence = | |
2730 | (return_type_pos == BFT_NO_RETURN_TYPE ? 0 : -1); | |
2731 | ||
2732 | DEMANGLE_TRACE ("bare-function-type", dm); | |
2733 | ||
59666b35 | 2734 | RETURN_IF_ERROR (result_add_char (dm, '(')); |
eb383413 L |
2735 | while (!end_of_name_p (dm) && peek_char (dm) != 'E') |
2736 | { | |
2737 | if (sequence == -1) | |
2738 | /* We're decoding the function's return type. */ | |
2739 | { | |
2740 | dyn_string_t return_type; | |
03d5f569 | 2741 | status_t status = STATUS_OK; |
eb383413 L |
2742 | |
2743 | /* Decode the return type off to the side. */ | |
03d5f569 | 2744 | RETURN_IF_ERROR (result_push (dm)); |
eb383413 L |
2745 | RETURN_IF_ERROR (demangle_type (dm)); |
2746 | return_type = (dyn_string_t) result_pop (dm); | |
2747 | ||
03d5f569 JM |
2748 | /* Add a space to the end of the type. Insert the return |
2749 | type where we've been asked to. */ | |
74bcd529 | 2750 | if (!dyn_string_append_space (return_type)) |
03d5f569 | 2751 | status = STATUS_ALLOCATION_FAILED; |
74bcd529 DD |
2752 | if (STATUS_NO_ERROR (status)) |
2753 | { | |
2754 | if (!dyn_string_insert (result_string (dm), *return_type_pos, | |
2755 | return_type)) | |
2756 | status = STATUS_ALLOCATION_FAILED; | |
2757 | else | |
2758 | *return_type_pos += dyn_string_length (return_type); | |
2759 | } | |
eb383413 | 2760 | |
eb383413 | 2761 | dyn_string_delete (return_type); |
03d5f569 | 2762 | RETURN_IF_ERROR (status); |
eb383413 L |
2763 | } |
2764 | else | |
2765 | { | |
2766 | /* Skip `void' parameter types. One should only occur as | |
2767 | the only type in a parameter list; in that case, we want | |
2768 | to print `foo ()' instead of `foo (void)'. */ | |
2769 | if (peek_char (dm) == 'v') | |
74bcd529 DD |
2770 | /* Consume the v. */ |
2771 | advance_char (dm); | |
2772 | else | |
eb383413 | 2773 | { |
74bcd529 DD |
2774 | /* Separate parameter types by commas. */ |
2775 | if (sequence > 0) | |
59666b35 | 2776 | RETURN_IF_ERROR (result_add (dm, ", ")); |
74bcd529 DD |
2777 | /* Demangle the type. */ |
2778 | RETURN_IF_ERROR (demangle_type (dm)); | |
eb383413 | 2779 | } |
eb383413 L |
2780 | } |
2781 | ||
2782 | ++sequence; | |
2783 | } | |
59666b35 | 2784 | RETURN_IF_ERROR (result_add_char (dm, ')')); |
eb383413 | 2785 | |
74bcd529 DD |
2786 | /* We should have demangled at least one parameter type (which would |
2787 | be void, for a function that takes no parameters), plus the | |
2788 | return type, if we were supposed to demangle that. */ | |
2789 | if (sequence == -1) | |
2790 | return "Missing function return type."; | |
2791 | else if (sequence == 0) | |
2792 | return "Missing function parameter."; | |
2793 | ||
eb383413 L |
2794 | return STATUS_OK; |
2795 | } | |
2796 | ||
74bcd529 | 2797 | /* Demangles and emits a <class-enum-type>. *ENCODE_RETURN_TYPE is set to |
eb383413 L |
2798 | non-zero if the type is a template-id, zero otherwise. |
2799 | ||
2800 | <class-enum-type> ::= <name> */ | |
2801 | ||
2802 | static status_t | |
74bcd529 | 2803 | demangle_class_enum_type (dm, encode_return_type) |
eb383413 | 2804 | demangling_t dm; |
74bcd529 | 2805 | int *encode_return_type; |
eb383413 L |
2806 | { |
2807 | DEMANGLE_TRACE ("class-enum-type", dm); | |
2808 | ||
74bcd529 | 2809 | RETURN_IF_ERROR (demangle_name (dm, encode_return_type)); |
eb383413 L |
2810 | return STATUS_OK; |
2811 | } | |
2812 | ||
2813 | /* Demangles and emits an <array-type>. | |
2814 | ||
59666b35 DD |
2815 | If PTR_INSERT_POS is not NULL, the array type is formatted as a |
2816 | pointer or reference to an array, except that asterisk and | |
2817 | ampersand punctuation is omitted (since it's not know at this | |
2818 | point). *PTR_INSERT_POS is set to the position in the demangled | |
2819 | name at which this punctuation should be inserted. For example, | |
2820 | `A10_i' is demangled to `int () [10]' and *PTR_INSERT_POS points | |
2821 | between the parentheses. | |
2822 | ||
2823 | If PTR_INSERT_POS is NULL, the array type is assumed not to be | |
2824 | pointer- or reference-qualified. Then, for example, `A10_i' is | |
2825 | demangled simply as `int[10]'. | |
2826 | ||
74bcd529 DD |
2827 | <array-type> ::= A [<dimension number>] _ <element type> |
2828 | ::= A <dimension expression> _ <element type> */ | |
eb383413 L |
2829 | |
2830 | static status_t | |
59666b35 | 2831 | demangle_array_type (dm, ptr_insert_pos) |
eb383413 | 2832 | demangling_t dm; |
59666b35 | 2833 | int *ptr_insert_pos; |
eb383413 | 2834 | { |
74bcd529 DD |
2835 | status_t status = STATUS_OK; |
2836 | dyn_string_t array_size = NULL; | |
2837 | char peek; | |
03d5f569 | 2838 | |
59666b35 DD |
2839 | DEMANGLE_TRACE ("array-type", dm); |
2840 | ||
74bcd529 | 2841 | RETURN_IF_ERROR (demangle_char (dm, 'A')); |
eb383413 L |
2842 | |
2843 | /* Demangle the array size into array_size. */ | |
74bcd529 DD |
2844 | peek = peek_char (dm); |
2845 | if (peek == '_') | |
2846 | /* Array bound is omitted. This is a C99-style VLA. */ | |
2847 | ; | |
2848 | else if (IS_DIGIT (peek_char (dm))) | |
2849 | { | |
2850 | /* It looks like a constant array bound. */ | |
2851 | array_size = dyn_string_new (10); | |
2852 | if (array_size == NULL) | |
2853 | return STATUS_ALLOCATION_FAILED; | |
2854 | status = demangle_number_literally (dm, array_size, 10, 0); | |
2855 | } | |
2856 | else | |
2857 | { | |
2858 | /* Anything is must be an expression for a nont-constant array | |
2859 | bound. This happens if the array type occurs in a template | |
2860 | and the array bound references a template parameter. */ | |
2861 | RETURN_IF_ERROR (result_push (dm)); | |
2862 | RETURN_IF_ERROR (demangle_expression (dm)); | |
2863 | array_size = (dyn_string_t) result_pop (dm); | |
2864 | } | |
2865 | /* array_size may have been allocated by now, so we can't use | |
2866 | RETURN_IF_ERROR until it's been deallocated. */ | |
eb383413 L |
2867 | |
2868 | /* Demangle the base type of the array. */ | |
03d5f569 JM |
2869 | if (STATUS_NO_ERROR (status)) |
2870 | status = demangle_char (dm, '_'); | |
2871 | if (STATUS_NO_ERROR (status)) | |
2872 | status = demangle_type (dm); | |
eb383413 | 2873 | |
59666b35 DD |
2874 | if (ptr_insert_pos != NULL) |
2875 | { | |
2876 | /* This array is actually part of an pointer- or | |
2877 | reference-to-array type. Format appropriately, except we | |
2878 | don't know which and how much punctuation to use. */ | |
2879 | if (STATUS_NO_ERROR (status)) | |
2880 | status = result_add (dm, " () "); | |
2881 | /* Let the caller know where to insert the punctuation. */ | |
2882 | *ptr_insert_pos = result_caret_pos (dm) - 2; | |
2883 | } | |
2884 | ||
eb383413 | 2885 | /* Emit the array dimension syntax. */ |
03d5f569 | 2886 | if (STATUS_NO_ERROR (status)) |
59666b35 | 2887 | status = result_add_char (dm, '['); |
74bcd529 | 2888 | if (STATUS_NO_ERROR (status) && array_size != NULL) |
59666b35 | 2889 | status = result_add_string (dm, array_size); |
03d5f569 | 2890 | if (STATUS_NO_ERROR (status)) |
59666b35 | 2891 | status = result_add_char (dm, ']'); |
74bcd529 DD |
2892 | if (array_size != NULL) |
2893 | dyn_string_delete (array_size); | |
eb383413 | 2894 | |
03d5f569 JM |
2895 | RETURN_IF_ERROR (status); |
2896 | ||
eb383413 L |
2897 | return STATUS_OK; |
2898 | } | |
2899 | ||
74bcd529 | 2900 | /* Demangles and emits a <template-param>. |
eb383413 L |
2901 | |
2902 | <template-param> ::= T_ # first template parameter | |
2903 | ::= T <parameter-2 number> _ */ | |
2904 | ||
2905 | static status_t | |
74bcd529 | 2906 | demangle_template_param (dm) |
eb383413 | 2907 | demangling_t dm; |
eb383413 L |
2908 | { |
2909 | int parm_number; | |
2910 | template_arg_list_t current_arg_list = current_template_arg_list (dm); | |
2911 | string_list_t arg; | |
2912 | ||
2913 | DEMANGLE_TRACE ("template-param", dm); | |
2914 | ||
2915 | /* Make sure there is a template argmust list in which to look up | |
2916 | this parameter reference. */ | |
2917 | if (current_arg_list == NULL) | |
2918 | return "Template parameter outside of template."; | |
2919 | ||
2920 | RETURN_IF_ERROR (demangle_char (dm, 'T')); | |
2921 | if (peek_char (dm) == '_') | |
2922 | parm_number = 0; | |
2923 | else | |
2924 | { | |
2925 | RETURN_IF_ERROR (demangle_number (dm, &parm_number, 10, 0)); | |
2926 | ++parm_number; | |
2927 | } | |
2928 | RETURN_IF_ERROR (demangle_char (dm, '_')); | |
2929 | ||
2930 | arg = template_arg_list_get_arg (current_arg_list, parm_number); | |
2931 | if (arg == NULL) | |
2932 | /* parm_number exceeded the number of arguments in the current | |
2933 | template argument list. */ | |
2934 | return "Template parameter number out of bounds."; | |
59666b35 | 2935 | RETURN_IF_ERROR (result_add_string (dm, (dyn_string_t) arg)); |
eb383413 | 2936 | |
eb383413 L |
2937 | return STATUS_OK; |
2938 | } | |
2939 | ||
2940 | /* Demangles and emits a <template-args>. | |
2941 | ||
2942 | <template-args> ::= I <template-arg>+ E */ | |
2943 | ||
2944 | static status_t | |
2945 | demangle_template_args (dm) | |
2946 | demangling_t dm; | |
2947 | { | |
2948 | int first = 1; | |
03d5f569 | 2949 | dyn_string_t old_last_source_name; |
eb383413 L |
2950 | template_arg_list_t arg_list = template_arg_list_new (); |
2951 | ||
03d5f569 JM |
2952 | if (arg_list == NULL) |
2953 | return STATUS_ALLOCATION_FAILED; | |
2954 | ||
eb383413 | 2955 | /* Preserve the most recently demangled source name. */ |
03d5f569 | 2956 | old_last_source_name = dm->last_source_name; |
eb383413 L |
2957 | dm->last_source_name = dyn_string_new (0); |
2958 | ||
2959 | DEMANGLE_TRACE ("template-args", dm); | |
2960 | ||
03d5f569 JM |
2961 | if (dm->last_source_name == NULL) |
2962 | return STATUS_ALLOCATION_FAILED; | |
2963 | ||
eb383413 | 2964 | RETURN_IF_ERROR (demangle_char (dm, 'I')); |
74bcd529 | 2965 | RETURN_IF_ERROR (result_open_template_list (dm)); |
eb383413 L |
2966 | do |
2967 | { | |
2968 | string_list_t arg; | |
2969 | ||
2970 | if (first) | |
2971 | first = 0; | |
2972 | else | |
59666b35 | 2973 | RETURN_IF_ERROR (result_add (dm, ", ")); |
eb383413 L |
2974 | |
2975 | /* Capture the template arg. */ | |
03d5f569 | 2976 | RETURN_IF_ERROR (result_push (dm)); |
eb383413 L |
2977 | RETURN_IF_ERROR (demangle_template_arg (dm)); |
2978 | arg = result_pop (dm); | |
2979 | ||
2980 | /* Emit it in the demangled name. */ | |
59666b35 | 2981 | RETURN_IF_ERROR (result_add_string (dm, (dyn_string_t) arg)); |
eb383413 L |
2982 | |
2983 | /* Save it for use in expanding <template-param>s. */ | |
2984 | template_arg_list_add_arg (arg_list, arg); | |
2985 | } | |
2986 | while (peek_char (dm) != 'E'); | |
2987 | /* Append the '>'. */ | |
03d5f569 | 2988 | RETURN_IF_ERROR (result_close_template_list (dm)); |
eb383413 L |
2989 | |
2990 | /* Consume the 'E'. */ | |
2991 | advance_char (dm); | |
2992 | ||
2993 | /* Restore the most recent demangled source name. */ | |
2994 | dyn_string_delete (dm->last_source_name); | |
2995 | dm->last_source_name = old_last_source_name; | |
2996 | ||
2997 | /* Push the list onto the top of the stack of template argument | |
2998 | lists, so that arguments from it are used from now on when | |
2999 | expanding <template-param>s. */ | |
3000 | push_template_arg_list (dm, arg_list); | |
3001 | ||
3002 | return STATUS_OK; | |
3003 | } | |
3004 | ||
3005 | /* This function, which does not correspond to a production in the | |
3006 | mangling spec, handles the `literal' production for both | |
3007 | <template-arg> and <expr-primary>. It does not expect or consume | |
3008 | the initial `L' or final `E'. The demangling is given by: | |
3009 | ||
3010 | <literal> ::= <type> </value/ number> | |
3011 | ||
3012 | and the emitted output is `(type)number'. */ | |
3013 | ||
3014 | static status_t | |
3015 | demangle_literal (dm) | |
3016 | demangling_t dm; | |
3017 | { | |
eb383413 | 3018 | char peek = peek_char (dm); |
03d5f569 JM |
3019 | dyn_string_t value_string; |
3020 | status_t status; | |
eb383413 L |
3021 | |
3022 | DEMANGLE_TRACE ("literal", dm); | |
3023 | ||
3024 | if (!flag_verbose && peek >= 'a' && peek <= 'z') | |
3025 | { | |
3026 | /* If not in verbose mode and this is a builtin type, see if we | |
3027 | can produce simpler numerical output. In particular, for | |
3028 | integer types shorter than `long', just write the number | |
3029 | without type information; for bools, write `true' or `false'. | |
3030 | Other refinements could be made here too. */ | |
3031 | ||
3032 | /* This constant string is used to map from <builtin-type> codes | |
3033 | (26 letters of the alphabet) to codes that determine how the | |
3034 | value will be displayed. The codes are: | |
3035 | b: display as bool | |
3036 | i: display as int | |
3037 | l: display as long | |
3038 | A space means the value will be represented using cast | |
3039 | notation. */ | |
3040 | static const char *const code_map = "ibi iii ll ii i "; | |
3041 | ||
3042 | char code = code_map[peek - 'a']; | |
3043 | /* FIXME: Implement demangling of floats and doubles. */ | |
3044 | if (code == 'u') | |
3045 | return STATUS_UNIMPLEMENTED; | |
3046 | if (code == 'b') | |
3047 | { | |
3048 | /* It's a boolean. */ | |
3049 | char value; | |
3050 | ||
3051 | /* Consume the b. */ | |
3052 | advance_char (dm); | |
3053 | /* Look at the next character. It should be 0 or 1, | |
3054 | corresponding to false or true, respectively. */ | |
3055 | value = peek_char (dm); | |
3056 | if (value == '0') | |
59666b35 | 3057 | RETURN_IF_ERROR (result_add (dm, "false")); |
eb383413 | 3058 | else if (value == '1') |
59666b35 | 3059 | RETURN_IF_ERROR (result_add (dm, "true")); |
eb383413 L |
3060 | else |
3061 | return "Unrecognized bool constant."; | |
3062 | /* Consume the 0 or 1. */ | |
3063 | advance_char (dm); | |
3064 | return STATUS_OK; | |
3065 | } | |
3066 | else if (code == 'i' || code == 'l') | |
3067 | { | |
3068 | /* It's an integer or long. */ | |
3069 | ||
3070 | /* Consume the type character. */ | |
3071 | advance_char (dm); | |
03d5f569 | 3072 | |
eb383413 | 3073 | /* Demangle the number and write it out. */ |
03d5f569 JM |
3074 | value_string = dyn_string_new (0); |
3075 | status = demangle_number_literally (dm, value_string, 10, 1); | |
3076 | if (STATUS_NO_ERROR (status)) | |
59666b35 | 3077 | status = result_add_string (dm, value_string); |
eb383413 | 3078 | /* For long integers, append an l. */ |
03d5f569 | 3079 | if (code == 'l' && STATUS_NO_ERROR (status)) |
59666b35 | 3080 | status = result_add_char (dm, code); |
03d5f569 JM |
3081 | dyn_string_delete (value_string); |
3082 | ||
3083 | RETURN_IF_ERROR (status); | |
eb383413 L |
3084 | return STATUS_OK; |
3085 | } | |
3086 | /* ...else code == ' ', so fall through to represent this | |
3087 | literal's type explicitly using cast syntax. */ | |
3088 | } | |
3089 | ||
59666b35 | 3090 | RETURN_IF_ERROR (result_add_char (dm, '(')); |
eb383413 | 3091 | RETURN_IF_ERROR (demangle_type (dm)); |
59666b35 | 3092 | RETURN_IF_ERROR (result_add_char (dm, ')')); |
03d5f569 JM |
3093 | |
3094 | value_string = dyn_string_new (0); | |
3095 | if (value_string == NULL) | |
3096 | return STATUS_ALLOCATION_FAILED; | |
eb383413 | 3097 | |
03d5f569 JM |
3098 | status = demangle_number_literally (dm, value_string, 10, 1); |
3099 | if (STATUS_NO_ERROR (status)) | |
59666b35 | 3100 | status = result_add_string (dm, value_string); |
03d5f569 JM |
3101 | dyn_string_delete (value_string); |
3102 | RETURN_IF_ERROR (status); | |
eb383413 L |
3103 | |
3104 | return STATUS_OK; | |
3105 | } | |
3106 | ||
3107 | /* Demangles and emits a <template-arg>. | |
3108 | ||
3109 | <template-arg> ::= <type> # type | |
3110 | ::= L <type> <value number> E # literal | |
3111 | ::= LZ <encoding> E # external name | |
3112 | ::= X <expression> E # expression */ | |
3113 | ||
3114 | static status_t | |
3115 | demangle_template_arg (dm) | |
3116 | demangling_t dm; | |
3117 | { | |
3118 | DEMANGLE_TRACE ("template-arg", dm); | |
3119 | ||
3120 | switch (peek_char (dm)) | |
3121 | { | |
3122 | case 'L': | |
3123 | advance_char (dm); | |
3124 | ||
3125 | if (peek_char (dm) == 'Z') | |
3126 | { | |
3127 | /* External name. */ | |
3128 | advance_char (dm); | |
3129 | /* FIXME: Standard is contradictory here. */ | |
3130 | RETURN_IF_ERROR (demangle_encoding (dm)); | |
3131 | } | |
3132 | else | |
3133 | RETURN_IF_ERROR (demangle_literal (dm)); | |
3134 | RETURN_IF_ERROR (demangle_char (dm, 'E')); | |
3135 | break; | |
3136 | ||
3137 | case 'X': | |
3138 | /* Expression. */ | |
3139 | advance_char (dm); | |
3140 | RETURN_IF_ERROR (demangle_expression (dm)); | |
74bcd529 | 3141 | RETURN_IF_ERROR (demangle_char (dm, 'E')); |
eb383413 L |
3142 | break; |
3143 | ||
3144 | default: | |
3145 | RETURN_IF_ERROR (demangle_type (dm)); | |
3146 | break; | |
3147 | } | |
3148 | ||
3149 | return STATUS_OK; | |
3150 | } | |
3151 | ||
3152 | /* Demangles and emits an <expression>. | |
3153 | ||
3154 | <expression> ::= <unary operator-name> <expression> | |
3155 | ::= <binary operator-name> <expression> <expression> | |
3156 | ::= <expr-primary> | |
3157 | ::= <scope-expression> */ | |
3158 | ||
3159 | static status_t | |
3160 | demangle_expression (dm) | |
3161 | demangling_t dm; | |
3162 | { | |
3163 | char peek = peek_char (dm); | |
3164 | ||
3165 | DEMANGLE_TRACE ("expression", dm); | |
3166 | ||
3167 | if (peek == 'L' || peek == 'T') | |
3168 | RETURN_IF_ERROR (demangle_expr_primary (dm)); | |
3169 | else if (peek == 's' && peek_char_next (dm) == 'r') | |
3170 | RETURN_IF_ERROR (demangle_scope_expression (dm)); | |
3171 | else | |
3172 | /* An operator expression. */ | |
3173 | { | |
3174 | int num_args; | |
793011ca | 3175 | int type_arg; |
03d5f569 | 3176 | status_t status = STATUS_OK; |
eb383413 L |
3177 | dyn_string_t operator_name; |
3178 | ||
3179 | /* We have an operator name. Since we want to output binary | |
3180 | operations in infix notation, capture the operator name | |
3181 | first. */ | |
03d5f569 | 3182 | RETURN_IF_ERROR (result_push (dm)); |
793011ca DD |
3183 | RETURN_IF_ERROR (demangle_operator_name (dm, 1, &num_args, |
3184 | &type_arg)); | |
eb383413 L |
3185 | operator_name = (dyn_string_t) result_pop (dm); |
3186 | ||
3187 | /* If it's binary, do an operand first. */ | |
3188 | if (num_args > 1) | |
3189 | { | |
59666b35 | 3190 | status = result_add_char (dm, '('); |
03d5f569 JM |
3191 | if (STATUS_NO_ERROR (status)) |
3192 | status = demangle_expression (dm); | |
3193 | if (STATUS_NO_ERROR (status)) | |
59666b35 | 3194 | status = result_add_char (dm, ')'); |
eb383413 L |
3195 | } |
3196 | ||
03d5f569 JM |
3197 | /* Emit the operator. */ |
3198 | if (STATUS_NO_ERROR (status)) | |
59666b35 | 3199 | status = result_add_string (dm, operator_name); |
eb383413 | 3200 | dyn_string_delete (operator_name); |
03d5f569 JM |
3201 | RETURN_IF_ERROR (status); |
3202 | ||
3203 | /* Emit its second (if binary) or only (if unary) operand. */ | |
59666b35 | 3204 | RETURN_IF_ERROR (result_add_char (dm, '(')); |
793011ca DD |
3205 | if (type_arg) |
3206 | RETURN_IF_ERROR (demangle_type (dm)); | |
3207 | else | |
3208 | RETURN_IF_ERROR (demangle_expression (dm)); | |
59666b35 | 3209 | RETURN_IF_ERROR (result_add_char (dm, ')')); |
eb383413 L |
3210 | |
3211 | /* The ternary operator takes a third operand. */ | |
3212 | if (num_args == 3) | |
3213 | { | |
59666b35 | 3214 | RETURN_IF_ERROR (result_add (dm, ":(")); |
eb383413 | 3215 | RETURN_IF_ERROR (demangle_expression (dm)); |
59666b35 | 3216 | RETURN_IF_ERROR (result_add_char (dm, ')')); |
eb383413 L |
3217 | } |
3218 | } | |
3219 | ||
3220 | return STATUS_OK; | |
3221 | } | |
3222 | ||
3223 | /* Demangles and emits a <scope-expression>. | |
3224 | ||
3225 | <scope-expression> ::= sr <qualifying type> <source-name> | |
3226 | ::= sr <qualifying type> <encoding> */ | |
3227 | ||
3228 | static status_t | |
3229 | demangle_scope_expression (dm) | |
3230 | demangling_t dm; | |
3231 | { | |
3232 | RETURN_IF_ERROR (demangle_char (dm, 's')); | |
3233 | RETURN_IF_ERROR (demangle_char (dm, 'r')); | |
3234 | RETURN_IF_ERROR (demangle_type (dm)); | |
59666b35 | 3235 | RETURN_IF_ERROR (result_add (dm, "::")); |
eb383413 L |
3236 | RETURN_IF_ERROR (demangle_encoding (dm)); |
3237 | return STATUS_OK; | |
3238 | } | |
3239 | ||
3240 | /* Demangles and emits an <expr-primary>. | |
3241 | ||
3242 | <expr-primary> ::= <template-param> | |
3243 | ::= L <type> <value number> E # literal | |
3244 | ::= L <mangled-name> E # external name */ | |
3245 | ||
3246 | static status_t | |
3247 | demangle_expr_primary (dm) | |
3248 | demangling_t dm; | |
3249 | { | |
3250 | char peek = peek_char (dm); | |
eb383413 L |
3251 | |
3252 | DEMANGLE_TRACE ("expr-primary", dm); | |
3253 | ||
3254 | if (peek == 'T') | |
74bcd529 | 3255 | RETURN_IF_ERROR (demangle_template_param (dm)); |
eb383413 L |
3256 | else if (peek == 'L') |
3257 | { | |
3258 | /* Consume the `L'. */ | |
3259 | advance_char (dm); | |
3260 | peek = peek_char (dm); | |
3261 | ||
3262 | if (peek == '_') | |
3263 | RETURN_IF_ERROR (demangle_mangled_name (dm)); | |
3264 | else | |
3265 | RETURN_IF_ERROR (demangle_literal (dm)); | |
3266 | ||
3267 | RETURN_IF_ERROR (demangle_char (dm, 'E')); | |
3268 | } | |
3269 | else | |
3270 | return STATUS_ERROR; | |
3271 | ||
3272 | return STATUS_OK; | |
3273 | } | |
3274 | ||
3275 | /* Demangles and emits a <substitution>. Sets *TEMPLATE_P to non-zero | |
74bcd529 | 3276 | if the substitution is the name of a template, zero otherwise. |
eb383413 L |
3277 | |
3278 | <substitution> ::= S <seq-id> _ | |
3279 | ::= S_ | |
3280 | ||
3281 | ::= St # ::std:: | |
3282 | ::= Sa # ::std::allocator | |
3283 | ::= Sb # ::std::basic_string | |
3284 | ::= Ss # ::std::basic_string<char, | |
3285 | ::std::char_traits<char>, | |
3286 | ::std::allocator<char> > | |
3287 | ::= Si # ::std::basic_istream<char, | |
3288 | std::char_traits<char> > | |
3289 | ::= So # ::std::basic_ostream<char, | |
3290 | std::char_traits<char> > | |
3291 | ::= Sd # ::std::basic_iostream<char, | |
74bcd529 | 3292 | std::char_traits<char> > |
eb383413 L |
3293 | */ |
3294 | ||
3295 | static status_t | |
74bcd529 | 3296 | demangle_substitution (dm, template_p) |
eb383413 L |
3297 | demangling_t dm; |
3298 | int *template_p; | |
eb383413 L |
3299 | { |
3300 | int seq_id; | |
3301 | int peek; | |
3302 | dyn_string_t text; | |
3303 | ||
3304 | DEMANGLE_TRACE ("substitution", dm); | |
3305 | ||
3306 | RETURN_IF_ERROR (demangle_char (dm, 'S')); | |
eb383413 L |
3307 | |
3308 | /* Scan the substitution sequence index. A missing number denotes | |
3309 | the first index. */ | |
3310 | peek = peek_char (dm); | |
3311 | if (peek == '_') | |
3312 | seq_id = -1; | |
3313 | /* If the following character is 0-9 or a capital letter, interpret | |
3314 | the sequence up to the next underscore as a base-36 substitution | |
3315 | index. */ | |
03d5f569 | 3316 | else if (IS_DIGIT ((unsigned char) peek) |
eb383413 L |
3317 | || (peek >= 'A' && peek <= 'Z')) |
3318 | RETURN_IF_ERROR (demangle_number (dm, &seq_id, 36, 0)); | |
3319 | else | |
3320 | { | |
03d5f569 JM |
3321 | const char *new_last_source_name = NULL; |
3322 | ||
eb383413 L |
3323 | switch (peek) |
3324 | { | |
3325 | case 't': | |
59666b35 | 3326 | RETURN_IF_ERROR (result_add (dm, "std")); |
eb383413 L |
3327 | break; |
3328 | ||
3329 | case 'a': | |
59666b35 | 3330 | RETURN_IF_ERROR (result_add (dm, "std::allocator")); |
03d5f569 JM |
3331 | new_last_source_name = "allocator"; |
3332 | *template_p = 1; | |
eb383413 L |
3333 | break; |
3334 | ||
3335 | case 'b': | |
59666b35 | 3336 | RETURN_IF_ERROR (result_add (dm, "std::basic_string")); |
03d5f569 JM |
3337 | new_last_source_name = "basic_string"; |
3338 | *template_p = 1; | |
eb383413 L |
3339 | break; |
3340 | ||
3341 | case 's': | |
3342 | if (!flag_verbose) | |
3343 | { | |
59666b35 | 3344 | RETURN_IF_ERROR (result_add (dm, "std::string")); |
03d5f569 | 3345 | new_last_source_name = "string"; |
eb383413 L |
3346 | } |
3347 | else | |
3348 | { | |
59666b35 | 3349 | RETURN_IF_ERROR (result_add (dm, "std::basic_string<char, std::char_traits<char>, std::allocator<char> >")); |
03d5f569 | 3350 | new_last_source_name = "basic_string"; |
eb383413 | 3351 | } |
03d5f569 | 3352 | *template_p = 0; |
eb383413 L |
3353 | break; |
3354 | ||
3355 | case 'i': | |
3356 | if (!flag_verbose) | |
3357 | { | |
59666b35 | 3358 | RETURN_IF_ERROR (result_add (dm, "std::istream")); |
03d5f569 | 3359 | new_last_source_name = "istream"; |
eb383413 L |
3360 | } |
3361 | else | |
3362 | { | |
59666b35 | 3363 | RETURN_IF_ERROR (result_add (dm, "std::basic_istream<char, std::char_traints<char> >")); |
03d5f569 | 3364 | new_last_source_name = "basic_istream"; |
eb383413 | 3365 | } |
03d5f569 | 3366 | *template_p = 0; |
eb383413 L |
3367 | break; |
3368 | ||
3369 | case 'o': | |
3370 | if (!flag_verbose) | |
3371 | { | |
59666b35 | 3372 | RETURN_IF_ERROR (result_add (dm, "std::ostream")); |
03d5f569 | 3373 | new_last_source_name = "ostream"; |
eb383413 L |
3374 | } |
3375 | else | |
3376 | { | |
59666b35 | 3377 | RETURN_IF_ERROR (result_add (dm, "std::basic_ostream<char, std::char_traits<char> >")); |
03d5f569 | 3378 | new_last_source_name = "basic_ostream"; |
eb383413 | 3379 | } |
03d5f569 | 3380 | *template_p = 0; |
eb383413 L |
3381 | break; |
3382 | ||
3383 | case 'd': | |
3384 | if (!flag_verbose) | |
3385 | { | |
59666b35 | 3386 | RETURN_IF_ERROR (result_add (dm, "std::iostream")); |
03d5f569 | 3387 | new_last_source_name = "iostream"; |
eb383413 L |
3388 | } |
3389 | else | |
3390 | { | |
59666b35 | 3391 | RETURN_IF_ERROR (result_add (dm, "std::basic_iostream<char, std::char_traits<char> >")); |
03d5f569 | 3392 | new_last_source_name = "basic_iostream"; |
eb383413 | 3393 | } |
03d5f569 | 3394 | *template_p = 0; |
eb383413 L |
3395 | break; |
3396 | ||
3397 | default: | |
3398 | return "Unrecognized <substitution>."; | |
3399 | } | |
3400 | ||
03d5f569 | 3401 | /* Consume the character we just processed. */ |
eb383413 | 3402 | advance_char (dm); |
03d5f569 JM |
3403 | |
3404 | if (new_last_source_name != NULL) | |
3405 | { | |
3406 | if (!dyn_string_copy_cstr (dm->last_source_name, | |
3407 | new_last_source_name)) | |
3408 | return STATUS_ALLOCATION_FAILED; | |
3409 | } | |
3410 | ||
eb383413 L |
3411 | return STATUS_OK; |
3412 | } | |
3413 | ||
3414 | /* Look up the substitution text. Since `S_' is the most recent | |
3415 | substitution, `S0_' is the second-most-recent, etc., shift the | |
3416 | numbering by one. */ | |
3417 | text = substitution_get (dm, seq_id + 1, template_p); | |
03d5f569 | 3418 | if (text == NULL) |
eb383413 L |
3419 | return "Substitution number out of range."; |
3420 | ||
3421 | /* Emit the substitution text. */ | |
59666b35 | 3422 | RETURN_IF_ERROR (result_add_string (dm, text)); |
eb383413 L |
3423 | |
3424 | RETURN_IF_ERROR (demangle_char (dm, '_')); | |
3425 | return STATUS_OK; | |
3426 | } | |
3427 | ||
3428 | /* Demangles and emits a <local-name>. | |
3429 | ||
3430 | <local-name> := Z <function encoding> E <entity name> [<discriminator>] | |
3431 | := Z <function encoding> E s [<discriminator>] */ | |
3432 | ||
3433 | static status_t | |
3434 | demangle_local_name (dm) | |
3435 | demangling_t dm; | |
3436 | { | |
3437 | DEMANGLE_TRACE ("local-name", dm); | |
3438 | ||
3439 | RETURN_IF_ERROR (demangle_char (dm, 'Z')); | |
3440 | RETURN_IF_ERROR (demangle_encoding (dm)); | |
3441 | RETURN_IF_ERROR (demangle_char (dm, 'E')); | |
59666b35 | 3442 | RETURN_IF_ERROR (result_add (dm, "::")); |
eb383413 L |
3443 | |
3444 | if (peek_char (dm) == 's') | |
3445 | { | |
3446 | /* Local character string literal. */ | |
59666b35 | 3447 | RETURN_IF_ERROR (result_add (dm, "string literal")); |
eb383413 L |
3448 | /* Consume the s. */ |
3449 | advance_char (dm); | |
3450 | RETURN_IF_ERROR (demangle_discriminator (dm, 0)); | |
3451 | } | |
3452 | else | |
3453 | { | |
3454 | int unused; | |
eb383413 L |
3455 | /* Local name for some other entity. Demangle its name. */ |
3456 | RETURN_IF_ERROR (demangle_name (dm, &unused)); | |
3457 | RETURN_IF_ERROR (demangle_discriminator (dm, 1)); | |
3458 | } | |
3459 | ||
3460 | return STATUS_OK; | |
3461 | } | |
3462 | ||
3463 | /* Optimonally demangles and emits a <discriminator>. If there is no | |
3464 | <discriminator> at the current position in the mangled string, the | |
3465 | descriminator is assumed to be zero. Emit the discriminator number | |
3466 | in parentheses, unless SUPPRESS_FIRST is non-zero and the | |
3467 | discriminator is zero. | |
3468 | ||
3469 | <discriminator> ::= _ <number> */ | |
3470 | ||
3471 | static status_t | |
3472 | demangle_discriminator (dm, suppress_first) | |
3473 | demangling_t dm; | |
3474 | int suppress_first; | |
3475 | { | |
3476 | /* Output for <discriminator>s to the demangled name is completely | |
74bcd529 | 3477 | suppressed if not in verbose mode. */ |
eb383413 L |
3478 | |
3479 | if (peek_char (dm) == '_') | |
3480 | { | |
3481 | /* Consume the underscore. */ | |
3482 | advance_char (dm); | |
3483 | if (flag_verbose) | |
59666b35 | 3484 | RETURN_IF_ERROR (result_add (dm, " [#")); |
eb383413 | 3485 | /* Check if there's a number following the underscore. */ |
03d5f569 | 3486 | if (IS_DIGIT ((unsigned char) peek_char (dm))) |
eb383413 L |
3487 | { |
3488 | int discriminator; | |
3489 | /* Demangle the number. */ | |
3490 | RETURN_IF_ERROR (demangle_number (dm, &discriminator, 10, 0)); | |
3491 | if (flag_verbose) | |
3492 | /* Write the discriminator. The mangled number is two | |
3493 | less than the discriminator ordinal, counting from | |
3494 | zero. */ | |
079c672a | 3495 | RETURN_IF_ERROR (int_to_dyn_string (discriminator + 1, |
03d5f569 | 3496 | (dyn_string_t) dm->result)); |
eb383413 L |
3497 | } |
3498 | else | |
079c672a | 3499 | return STATUS_ERROR; |
eb383413 | 3500 | if (flag_verbose) |
59666b35 | 3501 | RETURN_IF_ERROR (result_add_char (dm, ']')); |
eb383413 L |
3502 | } |
3503 | else if (!suppress_first) | |
3504 | { | |
3505 | if (flag_verbose) | |
59666b35 | 3506 | RETURN_IF_ERROR (result_add (dm, " [#0]")); |
eb383413 L |
3507 | } |
3508 | ||
3509 | return STATUS_OK; | |
3510 | } | |
3511 | ||
3512 | /* Demangle NAME into RESULT, which must be an initialized | |
3513 | dyn_string_t. On success, returns STATUS_OK. On failure, returns | |
3514 | an error message, and the contents of RESULT are unchanged. */ | |
3515 | ||
3516 | static status_t | |
bc9bf259 | 3517 | cp_demangle (name, result, style) |
03d5f569 | 3518 | const char *name; |
eb383413 | 3519 | dyn_string_t result; |
bc9bf259 | 3520 | int style; |
eb383413 L |
3521 | { |
3522 | status_t status; | |
3523 | int length = strlen (name); | |
3524 | ||
3525 | if (length > 2 && name[0] == '_' && name[1] == 'Z') | |
3526 | { | |
bc9bf259 | 3527 | demangling_t dm = demangling_new (name, style); |
03d5f569 JM |
3528 | if (dm == NULL) |
3529 | return STATUS_ALLOCATION_FAILED; | |
eb383413 | 3530 | |
03d5f569 JM |
3531 | status = result_push (dm); |
3532 | if (status != STATUS_OK) | |
3533 | { | |
3534 | demangling_delete (dm); | |
3535 | return status; | |
3536 | } | |
eb383413 | 3537 | |
03d5f569 JM |
3538 | status = demangle_mangled_name (dm); |
3539 | if (STATUS_NO_ERROR (status)) | |
eb383413 L |
3540 | { |
3541 | dyn_string_t demangled = (dyn_string_t) result_pop (dm); | |
03d5f569 JM |
3542 | if (!dyn_string_copy (result, demangled)) |
3543 | return STATUS_ALLOCATION_FAILED; | |
eb383413 L |
3544 | dyn_string_delete (demangled); |
3545 | } | |
3546 | ||
3547 | demangling_delete (dm); | |
3548 | } | |
3549 | else | |
3550 | { | |
3551 | /* It's evidently not a mangled C++ name. It could be the name | |
3552 | of something with C linkage, though, so just copy NAME into | |
3553 | RESULT. */ | |
03d5f569 JM |
3554 | if (!dyn_string_copy_cstr (result, name)) |
3555 | return STATUS_ALLOCATION_FAILED; | |
eb383413 L |
3556 | status = STATUS_OK; |
3557 | } | |
3558 | ||
03d5f569 JM |
3559 | return status; |
3560 | } | |
3561 | ||
3562 | /* Demangle TYPE_NAME into RESULT, which must be an initialized | |
3563 | dyn_string_t. On success, returns STATUS_OK. On failiure, returns | |
3564 | an error message, and the contents of RESULT are unchanged. */ | |
3565 | ||
3566 | static status_t | |
3567 | cp_demangle_type (type_name, result) | |
3568 | const char* type_name; | |
3569 | dyn_string_t result; | |
3570 | { | |
3571 | status_t status; | |
b117c158 | 3572 | demangling_t dm = demangling_new (type_name, DMGL_GNU_V3); |
03d5f569 JM |
3573 | |
3574 | if (dm == NULL) | |
3575 | return STATUS_ALLOCATION_FAILED; | |
3576 | ||
3577 | /* Demangle the type name. The demangled name is stored in dm. */ | |
3578 | status = result_push (dm); | |
3579 | if (status != STATUS_OK) | |
3580 | { | |
3581 | demangling_delete (dm); | |
3582 | return status; | |
3583 | } | |
3584 | ||
3585 | status = demangle_type (dm); | |
3586 | ||
3587 | if (STATUS_NO_ERROR (status)) | |
3588 | { | |
3589 | /* The demangling succeeded. Pop the result out of dm and copy | |
3590 | it into RESULT. */ | |
3591 | dyn_string_t demangled = (dyn_string_t) result_pop (dm); | |
3592 | if (!dyn_string_copy (result, demangled)) | |
3593 | return STATUS_ALLOCATION_FAILED; | |
3594 | dyn_string_delete (demangled); | |
3595 | } | |
3596 | ||
3597 | /* Clean up. */ | |
3598 | demangling_delete (dm); | |
3599 | ||
eb383413 L |
3600 | return status; |
3601 | } | |
3602 | ||
0c4460bb | 3603 | #if defined(IN_LIBGCC2) || defined(IN_GLIBCPP_V3) |
03d5f569 JM |
3604 | extern char *__cxa_demangle PARAMS ((const char *, char *, size_t *, int *)); |
3605 | ||
e49a569c | 3606 | /* ia64 ABI-mandated entry point in the C++ runtime library for performing |
03d5f569 JM |
3607 | demangling. MANGLED_NAME is a NUL-terminated character string |
3608 | containing the name to be demangled. | |
3609 | ||
3610 | OUTPUT_BUFFER is a region of memory, allocated with malloc, of | |
3611 | *LENGTH bytes, into which the demangled name is stored. If | |
3612 | OUTPUT_BUFFER is not long enough, it is expanded using realloc. | |
3613 | OUTPUT_BUFFER may instead be NULL; in that case, the demangled name | |
3614 | is placed in a region of memory allocated with malloc. | |
3615 | ||
3616 | If LENGTH is non-NULL, the length of the buffer conaining the | |
3617 | demangled name, is placed in *LENGTH. | |
3618 | ||
3619 | The return value is a pointer to the start of the NUL-terminated | |
3620 | demangled name, or NULL if the demangling fails. The caller is | |
3621 | responsible for deallocating this memory using free. | |
3622 | ||
3623 | *STATUS is set to one of the following values: | |
3624 | 0: The demangling operation succeeded. | |
3625 | -1: A memory allocation failiure occurred. | |
3626 | -2: MANGLED_NAME is not a valid name under the C++ ABI mangling rules. | |
3627 | -3: One of the arguments is invalid. | |
3628 | ||
3629 | The demagling is performed using the C++ ABI mangling rules, with | |
3630 | GNU extensions. */ | |
3631 | ||
3632 | char * | |
3633 | __cxa_demangle (mangled_name, output_buffer, length, status) | |
3634 | const char *mangled_name; | |
3635 | char *output_buffer; | |
3636 | size_t *length; | |
3637 | int *status; | |
3638 | { | |
3639 | struct dyn_string demangled_name; | |
3640 | status_t result; | |
3641 | ||
3642 | if (status == NULL) | |
3643 | return NULL; | |
3644 | ||
3645 | if (mangled_name == NULL) { | |
3646 | *status = -3; | |
3647 | return NULL; | |
3648 | } | |
3649 | ||
3650 | /* Did the caller provide a buffer for the demangled name? */ | |
3651 | if (output_buffer == NULL) { | |
3652 | /* No; dyn_string will malloc a buffer for us. */ | |
3653 | if (!dyn_string_init (&demangled_name, 0)) | |
3654 | { | |
3655 | *status = -1; | |
3656 | return NULL; | |
3657 | } | |
3658 | } | |
3659 | else { | |
3660 | /* Yes. Check that the length was provided. */ | |
3661 | if (length == NULL) { | |
3662 | *status = -3; | |
3663 | return NULL; | |
3664 | } | |
3665 | /* Install the buffer into a dyn_string. */ | |
3666 | demangled_name.allocated = *length; | |
3667 | demangled_name.length = 0; | |
3668 | demangled_name.s = output_buffer; | |
3669 | } | |
3670 | ||
3671 | if (mangled_name[0] == '_' && mangled_name[1] == 'Z') | |
3672 | /* MANGLED_NAME apprears to be a function or variable name. | |
3673 | Demangle it accordingly. */ | |
bc9bf259 | 3674 | result = cp_demangle (mangled_name, &demangled_name, 0); |
03d5f569 JM |
3675 | else |
3676 | /* Try to demangled MANGLED_NAME as the name of a type. */ | |
3677 | result = cp_demangle_type (mangled_name, &demangled_name); | |
3678 | ||
3679 | if (result == STATUS_OK) | |
3680 | /* The demangling succeeded. */ | |
3681 | { | |
3682 | /* If LENGTH isn't NULL, store the allocated buffer length | |
3683 | there; the buffer may have been realloced by dyn_string | |
3684 | functions. */ | |
3685 | if (length != NULL) | |
3686 | *length = demangled_name.allocated; | |
3687 | /* The operation was a success. */ | |
3688 | *status = 0; | |
3689 | return dyn_string_buf (&demangled_name); | |
3690 | } | |
3691 | else if (result == STATUS_ALLOCATION_FAILED) | |
3692 | /* A call to malloc or realloc failed during the demangling | |
3693 | operation. */ | |
3694 | { | |
3695 | *status = -1; | |
3696 | return NULL; | |
3697 | } | |
3698 | else | |
3699 | /* The demangling failed for another reason, most probably because | |
3700 | MANGLED_NAME isn't a valid mangled name. */ | |
3701 | { | |
3702 | /* If the buffer containing the demangled name wasn't provided | |
3703 | by the caller, free it. */ | |
3704 | if (output_buffer == NULL) | |
3705 | free (dyn_string_buf (&demangled_name)); | |
3706 | *status = -2; | |
3707 | return NULL; | |
3708 | } | |
3709 | } | |
3710 | ||
0c4460bb | 3711 | #else /* ! (IN_LIBGCC2 || IN_GLIBCPP_V3) */ |
03d5f569 | 3712 | |
eb383413 L |
3713 | /* Variant entry point for integration with the existing cplus-dem |
3714 | demangler. Attempts to demangle MANGLED. If the demangling | |
3715 | succeeds, returns a buffer, allocated with malloc, containing the | |
3716 | demangled name. The caller must deallocate the buffer using free. | |
3717 | If the demangling failes, returns NULL. */ | |
3718 | ||
3719 | char * | |
44354ae1 | 3720 | cplus_demangle_v3 (mangled, options) |
eb383413 | 3721 | const char* mangled; |
44354ae1 | 3722 | int options; |
eb383413 | 3723 | { |
849ee224 DD |
3724 | dyn_string_t demangled; |
3725 | status_t status; | |
44354ae1 | 3726 | int type = !!(options & DMGL_TYPES); |
849ee224 | 3727 | |
42da15d6 DD |
3728 | if (mangled[0] == '_' && mangled[1] == 'Z') |
3729 | /* It is not a type. */ | |
3730 | type = 0; | |
3731 | else | |
3732 | { | |
3733 | /* It is a type. Stop if we don't want to demangle types. */ | |
3734 | if (!type) | |
3735 | return NULL; | |
3736 | } | |
c78d91b1 | 3737 | |
44354ae1 DD |
3738 | flag_verbose = !!(options & DMGL_VERBOSE); |
3739 | ||
eb383413 | 3740 | /* Create a dyn_string to hold the demangled name. */ |
849ee224 | 3741 | demangled = dyn_string_new (0); |
eb383413 | 3742 | /* Attempt the demangling. */ |
42da15d6 DD |
3743 | if (!type) |
3744 | /* Appears to be a function or variable name. */ | |
3745 | status = cp_demangle (mangled, demangled, 0); | |
3746 | else | |
3747 | /* Try to demangle it as the name of a type. */ | |
3748 | status = cp_demangle_type (mangled, demangled); | |
849ee224 | 3749 | |
03d5f569 | 3750 | if (STATUS_NO_ERROR (status)) |
eb383413 L |
3751 | /* Demangling succeeded. */ |
3752 | { | |
3753 | /* Grab the demangled result from the dyn_string. It was | |
3754 | allocated with malloc, so we can return it directly. */ | |
3755 | char *return_value = dyn_string_release (demangled); | |
eb383413 L |
3756 | /* Hand back the demangled name. */ |
3757 | return return_value; | |
3758 | } | |
03d5f569 JM |
3759 | else if (status == STATUS_ALLOCATION_FAILED) |
3760 | { | |
3761 | fprintf (stderr, "Memory allocation failed.\n"); | |
3762 | abort (); | |
3763 | } | |
eb383413 L |
3764 | else |
3765 | /* Demangling failed. */ | |
3766 | { | |
3767 | dyn_string_delete (demangled); | |
3768 | return NULL; | |
3769 | } | |
3770 | } | |
3771 | ||
bc9bf259 DD |
3772 | /* Demangle a Java symbol. Java uses a subset of the V3 ABI C++ mangling |
3773 | conventions, but the output formatting is a little different. | |
3774 | This instructs the C++ demangler not to emit pointer characters ("*"), and | |
3775 | to use Java's namespace separator symbol ("." instead of "::"). It then | |
3776 | does an additional pass over the demangled output to replace instances | |
3777 | of JArray<TYPE> with TYPE[]. */ | |
3778 | ||
3779 | char * | |
3780 | java_demangle_v3 (mangled) | |
3781 | const char* mangled; | |
3782 | { | |
3783 | dyn_string_t demangled; | |
3784 | char *next; | |
3785 | char *end; | |
3786 | int len; | |
3787 | status_t status; | |
3788 | int nesting = 0; | |
3789 | char *cplus_demangled; | |
3790 | char *return_value; | |
3791 | ||
3792 | /* Create a dyn_string to hold the demangled name. */ | |
3793 | demangled = dyn_string_new (0); | |
3794 | ||
3795 | /* Attempt the demangling. */ | |
3796 | status = cp_demangle ((char *) mangled, demangled, DMGL_JAVA); | |
3797 | ||
3798 | if (STATUS_NO_ERROR (status)) | |
3799 | /* Demangling succeeded. */ | |
3800 | { | |
3801 | /* Grab the demangled result from the dyn_string. */ | |
3802 | cplus_demangled = dyn_string_release (demangled); | |
3803 | } | |
3804 | else if (status == STATUS_ALLOCATION_FAILED) | |
3805 | { | |
3806 | fprintf (stderr, "Memory allocation failed.\n"); | |
3807 | abort (); | |
3808 | } | |
3809 | else | |
3810 | /* Demangling failed. */ | |
3811 | { | |
3812 | dyn_string_delete (demangled); | |
3813 | return NULL; | |
3814 | } | |
3815 | ||
3816 | len = strlen (cplus_demangled); | |
3817 | next = cplus_demangled; | |
3818 | end = next + len; | |
3819 | demangled = NULL; | |
3820 | ||
3821 | /* Replace occurances of JArray<TYPE> with TYPE[]. */ | |
3822 | while (next < end) | |
3823 | { | |
3824 | char *open_str = strstr (next, "JArray<"); | |
3825 | char *close_str = NULL; | |
3826 | if (nesting > 0) | |
3827 | close_str = strchr (next, '>'); | |
3828 | ||
3829 | if (open_str != NULL && (close_str == NULL || close_str > open_str)) | |
3830 | { | |
3831 | ++nesting; | |
3832 | ||
3833 | if (!demangled) | |
3834 | demangled = dyn_string_new(len); | |
3835 | ||
3836 | /* Copy prepending symbols, if any. */ | |
3837 | if (open_str > next) | |
3838 | { | |
3839 | open_str[0] = 0; | |
3840 | dyn_string_append_cstr (demangled, next); | |
3841 | } | |
3842 | next = open_str + 7; | |
3843 | } | |
3844 | else if (close_str != NULL) | |
3845 | { | |
3846 | --nesting; | |
3847 | ||
3848 | /* Copy prepending type symbol, if any. Squash any spurious | |
3849 | whitespace. */ | |
3850 | if (close_str > next && next[0] != ' ') | |
3851 | { | |
3852 | close_str[0] = 0; | |
3853 | dyn_string_append_cstr (demangled, next); | |
3854 | } | |
3855 | dyn_string_append_cstr (demangled, "[]"); | |
3856 | next = close_str + 1; | |
3857 | } | |
3858 | else | |
3859 | { | |
3860 | /* There are no more arrays. Copy the rest of the symbol, or | |
3861 | simply return the original symbol if no changes were made. */ | |
3862 | if (next == cplus_demangled) | |
3863 | return cplus_demangled; | |
3864 | ||
3865 | dyn_string_append_cstr (demangled, next); | |
3866 | next = end; | |
3867 | } | |
3868 | } | |
3869 | ||
3870 | free (cplus_demangled); | |
3871 | ||
f2160d2b DD |
3872 | if (demangled) |
3873 | return_value = dyn_string_release (demangled); | |
3874 | else | |
3875 | return_value = NULL; | |
3876 | ||
bc9bf259 DD |
3877 | return return_value; |
3878 | } | |
3879 | ||
0c4460bb | 3880 | #endif /* IN_LIBGCC2 || IN_GLIBCPP_V3 */ |
03d5f569 | 3881 | |
e61231f1 | 3882 | |
2a9dffbf | 3883 | #ifndef IN_GLIBCPP_V3 |
e61231f1 JB |
3884 | /* Demangle NAME in the G++ V3 ABI demangling style, and return either |
3885 | zero, indicating that some error occurred, or a demangling_t | |
3886 | holding the results. */ | |
3887 | static demangling_t | |
457161bf DD |
3888 | demangle_v3_with_details (name) |
3889 | const char *name; | |
e61231f1 JB |
3890 | { |
3891 | demangling_t dm; | |
3892 | status_t status; | |
3893 | ||
3894 | if (strncmp (name, "_Z", 2)) | |
3895 | return 0; | |
3896 | ||
3897 | dm = demangling_new (name, DMGL_GNU_V3); | |
3898 | if (dm == NULL) | |
3899 | { | |
3900 | fprintf (stderr, "Memory allocation failed.\n"); | |
3901 | abort (); | |
3902 | } | |
3903 | ||
3904 | status = result_push (dm); | |
3905 | if (! STATUS_NO_ERROR (status)) | |
3906 | { | |
3907 | demangling_delete (dm); | |
3908 | fprintf (stderr, "%s\n", status); | |
3909 | abort (); | |
3910 | } | |
3911 | ||
3912 | status = demangle_mangled_name (dm); | |
3913 | if (STATUS_NO_ERROR (status)) | |
3914 | return dm; | |
3915 | ||
3916 | demangling_delete (dm); | |
3917 | return 0; | |
3918 | } | |
3919 | ||
3920 | ||
3921 | /* Return non-zero iff NAME is the mangled form of a constructor name | |
3922 | in the G++ V3 ABI demangling style. Specifically, return: | |
3923 | - '1' if NAME is a complete object constructor, | |
3924 | - '2' if NAME is a base object constructor, or | |
3925 | - '3' if NAME is a complete object allocating constructor. */ | |
3926 | enum gnu_v3_ctor_kinds | |
457161bf DD |
3927 | is_gnu_v3_mangled_ctor (name) |
3928 | const char *name; | |
e61231f1 JB |
3929 | { |
3930 | demangling_t dm = demangle_v3_with_details (name); | |
3931 | ||
3932 | if (dm) | |
3933 | { | |
3934 | enum gnu_v3_ctor_kinds result = dm->is_constructor; | |
3935 | demangling_delete (dm); | |
3936 | return result; | |
3937 | } | |
3938 | else | |
3939 | return 0; | |
3940 | } | |
3941 | ||
3942 | ||
3943 | /* Return non-zero iff NAME is the mangled form of a destructor name | |
3944 | in the G++ V3 ABI demangling style. Specifically, return: | |
3945 | - '0' if NAME is a deleting destructor, | |
3946 | - '1' if NAME is a complete object destructor, or | |
3947 | - '2' if NAME is a base object destructor. */ | |
3948 | enum gnu_v3_dtor_kinds | |
457161bf DD |
3949 | is_gnu_v3_mangled_dtor (name) |
3950 | const char *name; | |
e61231f1 JB |
3951 | { |
3952 | demangling_t dm = demangle_v3_with_details (name); | |
3953 | ||
3954 | if (dm) | |
3955 | { | |
3956 | enum gnu_v3_dtor_kinds result = dm->is_destructor; | |
3957 | demangling_delete (dm); | |
3958 | return result; | |
3959 | } | |
3960 | else | |
3961 | return 0; | |
3962 | } | |
0c4460bb | 3963 | #endif /* IN_GLIBCPP_V3 */ |
e61231f1 JB |
3964 | |
3965 | ||
eb383413 L |
3966 | #ifdef STANDALONE_DEMANGLER |
3967 | ||
3968 | #include "getopt.h" | |
3969 | ||
3970 | static void print_usage | |
3971 | PARAMS ((FILE* fp, int exit_value)); | |
3972 | ||
3973 | /* Non-zero if CHAR is a character than can occur in a mangled name. */ | |
3974 | #define is_mangled_char(CHAR) \ | |
74bcd529 DD |
3975 | (IS_ALPHA (CHAR) || IS_DIGIT (CHAR) \ |
3976 | || (CHAR) == '_' || (CHAR) == '.' || (CHAR) == '$') | |
eb383413 L |
3977 | |
3978 | /* The name of this program, as invoked. */ | |
3979 | const char* program_name; | |
3980 | ||
3981 | /* Prints usage summary to FP and then exits with EXIT_VALUE. */ | |
3982 | ||
3983 | static void | |
3984 | print_usage (fp, exit_value) | |
3985 | FILE* fp; | |
3986 | int exit_value; | |
3987 | { | |
3988 | fprintf (fp, "Usage: %s [options] [names ...]\n", program_name); | |
74bcd529 | 3989 | fprintf (fp, "Options:\n"); |
eb383413 L |
3990 | fprintf (fp, " -h,--help Display this message.\n"); |
3991 | fprintf (fp, " -s,--strict Demangle standard names only.\n"); | |
3992 | fprintf (fp, " -v,--verbose Produce verbose demanglings.\n"); | |
3993 | fprintf (fp, "If names are provided, they are demangled. Otherwise filters standard input.\n"); | |
3994 | ||
3995 | exit (exit_value); | |
3996 | } | |
3997 | ||
3998 | /* Option specification for getopt_long. */ | |
c23795e2 | 3999 | static const struct option long_options[] = |
eb383413 L |
4000 | { |
4001 | { "help", no_argument, NULL, 'h' }, | |
4002 | { "strict", no_argument, NULL, 's' }, | |
4003 | { "verbose", no_argument, NULL, 'v' }, | |
4004 | { NULL, no_argument, NULL, 0 }, | |
4005 | }; | |
4006 | ||
4007 | /* Main entry for a demangling filter executable. It will demangle | |
4008 | its command line arguments, if any. If none are provided, it will | |
4009 | filter stdin to stdout, replacing any recognized mangled C++ names | |
4010 | with their demangled equivalents. */ | |
4011 | ||
4012 | int | |
4013 | main (argc, argv) | |
4014 | int argc; | |
4015 | char *argv[]; | |
4016 | { | |
4017 | status_t status; | |
4018 | int i; | |
4019 | int opt_char; | |
4020 | ||
4021 | /* Use the program name of this program, as invoked. */ | |
4022 | program_name = argv[0]; | |
4023 | ||
4024 | /* Parse options. */ | |
4025 | do | |
4026 | { | |
4027 | opt_char = getopt_long (argc, argv, "hsv", long_options, NULL); | |
4028 | switch (opt_char) | |
4029 | { | |
4030 | case '?': /* Unrecognized option. */ | |
4031 | print_usage (stderr, 1); | |
4032 | break; | |
4033 | ||
4034 | case 'h': | |
4035 | print_usage (stdout, 0); | |
4036 | break; | |
4037 | ||
4038 | case 's': | |
4039 | flag_strict = 1; | |
4040 | break; | |
4041 | ||
4042 | case 'v': | |
4043 | flag_verbose = 1; | |
4044 | break; | |
4045 | } | |
4046 | } | |
4047 | while (opt_char != -1); | |
4048 | ||
4049 | if (optind == argc) | |
4050 | /* No command line arguments were provided. Filter stdin. */ | |
4051 | { | |
4052 | dyn_string_t mangled = dyn_string_new (3); | |
4053 | dyn_string_t demangled = dyn_string_new (0); | |
4054 | status_t status; | |
4055 | ||
4056 | /* Read all of input. */ | |
4057 | while (!feof (stdin)) | |
4058 | { | |
4059 | char c = getchar (); | |
4060 | ||
4061 | /* The first character of a mangled name is an underscore. */ | |
4062 | if (feof (stdin)) | |
4063 | break; | |
4064 | if (c != '_') | |
4065 | { | |
4066 | /* It's not a mangled name. Print the character and go | |
4067 | on. */ | |
4068 | putchar (c); | |
4069 | continue; | |
4070 | } | |
4071 | c = getchar (); | |
4072 | ||
4073 | /* The second character of a mangled name is a capital `Z'. */ | |
4074 | if (feof (stdin)) | |
4075 | break; | |
4076 | if (c != 'Z') | |
4077 | { | |
4078 | /* It's not a mangled name. Print the previous | |
4079 | underscore, the `Z', and go on. */ | |
4080 | putchar ('_'); | |
4081 | putchar (c); | |
4082 | continue; | |
4083 | } | |
4084 | ||
4085 | /* Start keeping track of the candidate mangled name. */ | |
4086 | dyn_string_append_char (mangled, '_'); | |
4087 | dyn_string_append_char (mangled, 'Z'); | |
4088 | ||
4089 | /* Pile characters into mangled until we hit one that can't | |
4090 | occur in a mangled name. */ | |
4091 | c = getchar (); | |
4092 | while (!feof (stdin) && is_mangled_char (c)) | |
4093 | { | |
4094 | dyn_string_append_char (mangled, c); | |
4095 | if (feof (stdin)) | |
4096 | break; | |
4097 | c = getchar (); | |
4098 | } | |
4099 | ||
4100 | /* Attempt to demangle the name. */ | |
bc9bf259 | 4101 | status = cp_demangle (dyn_string_buf (mangled), demangled, 0); |
eb383413 L |
4102 | |
4103 | /* If the demangling succeeded, great! Print out the | |
4104 | demangled version. */ | |
03d5f569 | 4105 | if (STATUS_NO_ERROR (status)) |
eb383413 | 4106 | fputs (dyn_string_buf (demangled), stdout); |
03d5f569 JM |
4107 | /* Abort on allocation failures. */ |
4108 | else if (status == STATUS_ALLOCATION_FAILED) | |
4109 | { | |
4110 | fprintf (stderr, "Memory allocation failed.\n"); | |
4111 | abort (); | |
4112 | } | |
eb383413 L |
4113 | /* Otherwise, it might not have been a mangled name. Just |
4114 | print out the original text. */ | |
4115 | else | |
4116 | fputs (dyn_string_buf (mangled), stdout); | |
4117 | ||
4118 | /* If we haven't hit EOF yet, we've read one character that | |
4119 | can't occur in a mangled name, so print it out. */ | |
4120 | if (!feof (stdin)) | |
4121 | putchar (c); | |
4122 | ||
4123 | /* Clear the candidate mangled name, to start afresh next | |
4124 | time we hit a `_Z'. */ | |
4125 | dyn_string_clear (mangled); | |
4126 | } | |
4127 | ||
4128 | dyn_string_delete (mangled); | |
4129 | dyn_string_delete (demangled); | |
4130 | } | |
4131 | else | |
4132 | /* Demangle command line arguments. */ | |
4133 | { | |
4134 | dyn_string_t result = dyn_string_new (0); | |
4135 | ||
4136 | /* Loop over command line arguments. */ | |
4137 | for (i = optind; i < argc; ++i) | |
4138 | { | |
4139 | /* Attempt to demangle. */ | |
bc9bf259 | 4140 | status = cp_demangle (argv[i], result, 0); |
eb383413 L |
4141 | |
4142 | /* If it worked, print the demangled name. */ | |
03d5f569 | 4143 | if (STATUS_NO_ERROR (status)) |
eb383413 | 4144 | printf ("%s\n", dyn_string_buf (result)); |
03d5f569 JM |
4145 | /* Abort on allocaiton failures. */ |
4146 | else if (status == STATUS_ALLOCATION_FAILED) | |
4147 | { | |
bc9bf259 | 4148 | fprintf (stderr, "Memory allocation failed.\n"); |
03d5f569 JM |
4149 | abort (); |
4150 | } | |
eb383413 L |
4151 | /* If not, print the error message to stderr instead. */ |
4152 | else | |
4153 | fprintf (stderr, "%s\n", status); | |
4154 | } | |
4155 | dyn_string_delete (result); | |
4156 | } | |
4157 | ||
4158 | return 0; | |
4159 | } | |
4160 | ||
4161 | #endif /* STANDALONE_DEMANGLER */ |