Commit | Line | Data |
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de17c821 | 1 | /* Helper routines for C++ support in GDB. |
ecd75fc8 | 2 | Copyright (C) 2002-2014 Free Software Foundation, Inc. |
de17c821 DJ |
3 | |
4 | Contributed by MontaVista Software. | |
5 | ||
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
de17c821 DJ |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
de17c821 DJ |
20 | |
21 | #include "defs.h" | |
22 | #include "cp-support.h" | |
de17c821 | 23 | #include "demangle.h" |
9219021c | 24 | #include "gdbcmd.h" |
b6429628 DC |
25 | #include "dictionary.h" |
26 | #include "objfiles.h" | |
27 | #include "frame.h" | |
28 | #include "symtab.h" | |
29 | #include "block.h" | |
b2a7f303 | 30 | #include "complaints.h" |
362ff856 | 31 | #include "gdbtypes.h" |
12907978 KS |
32 | #include "expression.h" |
33 | #include "value.h" | |
c4aeac85 | 34 | #include "cp-abi.h" |
992c7d70 | 35 | #include <signal.h> |
b2a7f303 | 36 | |
f88e9fd3 DJ |
37 | #include "safe-ctype.h" |
38 | ||
fb4c6eba DJ |
39 | #define d_left(dc) (dc)->u.s_binary.left |
40 | #define d_right(dc) (dc)->u.s_binary.right | |
b2a7f303 | 41 | |
fb4c6eba | 42 | /* Functions related to demangled name parsing. */ |
b2a7f303 DC |
43 | |
44 | static unsigned int cp_find_first_component_aux (const char *name, | |
45 | int permissive); | |
46 | ||
47 | static void demangled_name_complaint (const char *name); | |
b6429628 DC |
48 | |
49 | /* Functions/variables related to overload resolution. */ | |
50 | ||
7322dca9 | 51 | static int sym_return_val_size = -1; |
b6429628 DC |
52 | static int sym_return_val_index; |
53 | static struct symbol **sym_return_val; | |
54 | ||
8d577d32 DC |
55 | static void overload_list_add_symbol (struct symbol *sym, |
56 | const char *oload_name); | |
57 | ||
58 | static void make_symbol_overload_list_using (const char *func_name, | |
59 | const char *namespace); | |
60 | ||
61 | static void make_symbol_overload_list_qualified (const char *func_name); | |
62 | ||
9219021c DC |
63 | /* The list of "maint cplus" commands. */ |
64 | ||
5c4e30ca | 65 | struct cmd_list_element *maint_cplus_cmd_list = NULL; |
9219021c DC |
66 | |
67 | /* The actual commands. */ | |
68 | ||
69 | static void maint_cplus_command (char *arg, int from_tty); | |
70 | static void first_component_command (char *arg, int from_tty); | |
71 | ||
3a93a0c2 KS |
72 | /* A list of typedefs which should not be substituted by replace_typedefs. */ |
73 | static const char * const ignore_typedefs[] = | |
74 | { | |
75 | "std::istream", "std::iostream", "std::ostream", "std::string" | |
76 | }; | |
77 | ||
78 | static void | |
79 | replace_typedefs (struct demangle_parse_info *info, | |
2621e0fd TT |
80 | struct demangle_component *ret_comp, |
81 | canonicalization_ftype *finder, | |
82 | void *data); | |
3a93a0c2 KS |
83 | |
84 | /* A convenience function to copy STRING into OBSTACK, returning a pointer | |
85 | to the newly allocated string and saving the number of bytes saved in LEN. | |
86 | ||
87 | It does not copy the terminating '\0' byte! */ | |
88 | ||
89 | static char * | |
90 | copy_string_to_obstack (struct obstack *obstack, const char *string, | |
91 | long *len) | |
92 | { | |
93 | *len = strlen (string); | |
94 | return obstack_copy (obstack, string, *len); | |
95 | } | |
96 | ||
97 | /* A cleanup wrapper for cp_demangled_name_parse_free. */ | |
98 | ||
99 | static void | |
100 | do_demangled_name_parse_free_cleanup (void *data) | |
101 | { | |
102 | struct demangle_parse_info *info = (struct demangle_parse_info *) data; | |
103 | ||
104 | cp_demangled_name_parse_free (info); | |
105 | } | |
106 | ||
107 | /* Create a cleanup for C++ name parsing. */ | |
108 | ||
109 | struct cleanup * | |
110 | make_cleanup_cp_demangled_name_parse_free (struct demangle_parse_info *info) | |
111 | { | |
112 | return make_cleanup (do_demangled_name_parse_free_cleanup, info); | |
113 | } | |
114 | ||
f88e9fd3 DJ |
115 | /* Return 1 if STRING is clearly already in canonical form. This |
116 | function is conservative; things which it does not recognize are | |
117 | assumed to be non-canonical, and the parser will sort them out | |
118 | afterwards. This speeds up the critical path for alphanumeric | |
119 | identifiers. */ | |
120 | ||
121 | static int | |
122 | cp_already_canonical (const char *string) | |
123 | { | |
124 | /* Identifier start character [a-zA-Z_]. */ | |
125 | if (!ISIDST (string[0])) | |
126 | return 0; | |
127 | ||
128 | /* These are the only two identifiers which canonicalize to other | |
129 | than themselves or an error: unsigned -> unsigned int and | |
130 | signed -> int. */ | |
131 | if (string[0] == 'u' && strcmp (&string[1], "nsigned") == 0) | |
132 | return 0; | |
133 | else if (string[0] == 's' && strcmp (&string[1], "igned") == 0) | |
134 | return 0; | |
135 | ||
136 | /* Identifier character [a-zA-Z0-9_]. */ | |
137 | while (ISIDNUM (string[1])) | |
138 | string++; | |
139 | ||
140 | if (string[1] == '\0') | |
141 | return 1; | |
142 | else | |
143 | return 0; | |
144 | } | |
9219021c | 145 | |
3a93a0c2 KS |
146 | /* Inspect the given RET_COMP for its type. If it is a typedef, |
147 | replace the node with the typedef's tree. | |
148 | ||
149 | Returns 1 if any typedef substitutions were made, 0 otherwise. */ | |
150 | ||
151 | static int | |
152 | inspect_type (struct demangle_parse_info *info, | |
2621e0fd TT |
153 | struct demangle_component *ret_comp, |
154 | canonicalization_ftype *finder, | |
155 | void *data) | |
3a93a0c2 KS |
156 | { |
157 | int i; | |
158 | char *name; | |
159 | struct symbol *sym; | |
160 | volatile struct gdb_exception except; | |
161 | ||
162 | /* Copy the symbol's name from RET_COMP and look it up | |
163 | in the symbol table. */ | |
164 | name = (char *) alloca (ret_comp->u.s_name.len + 1); | |
165 | memcpy (name, ret_comp->u.s_name.s, ret_comp->u.s_name.len); | |
166 | name[ret_comp->u.s_name.len] = '\0'; | |
167 | ||
168 | /* Ignore any typedefs that should not be substituted. */ | |
169 | for (i = 0; i < ARRAY_SIZE (ignore_typedefs); ++i) | |
170 | { | |
171 | if (strcmp (name, ignore_typedefs[i]) == 0) | |
172 | return 0; | |
173 | } | |
174 | ||
175 | sym = NULL; | |
176 | TRY_CATCH (except, RETURN_MASK_ALL) | |
177 | { | |
4186eb54 | 178 | sym = lookup_symbol (name, 0, VAR_DOMAIN, 0); |
3a93a0c2 KS |
179 | } |
180 | ||
181 | if (except.reason >= 0 && sym != NULL) | |
182 | { | |
183 | struct type *otype = SYMBOL_TYPE (sym); | |
184 | ||
2621e0fd TT |
185 | if (finder != NULL) |
186 | { | |
187 | const char *new_name = (*finder) (otype, data); | |
188 | ||
189 | if (new_name != NULL) | |
190 | { | |
191 | ret_comp->u.s_name.s = new_name; | |
192 | ret_comp->u.s_name.len = strlen (new_name); | |
193 | return 1; | |
194 | } | |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
74921315 KS |
199 | /* If the type is a typedef or namespace alias, replace it. */ |
200 | if (TYPE_CODE (otype) == TYPE_CODE_TYPEDEF | |
201 | || TYPE_CODE (otype) == TYPE_CODE_NAMESPACE) | |
3a93a0c2 KS |
202 | { |
203 | long len; | |
204 | int is_anon; | |
205 | struct type *type; | |
206 | struct demangle_parse_info *i; | |
207 | struct ui_file *buf; | |
208 | ||
209 | /* Get the real type of the typedef. */ | |
210 | type = check_typedef (otype); | |
211 | ||
74921315 KS |
212 | /* If the symbol is a namespace and its type name is no different |
213 | than the name we looked up, this symbol is not a namespace | |
214 | alias and does not need to be substituted. */ | |
215 | if (TYPE_CODE (otype) == TYPE_CODE_NAMESPACE | |
216 | && strcmp (TYPE_NAME (type), name) == 0) | |
217 | return 0; | |
218 | ||
3a93a0c2 KS |
219 | is_anon = (TYPE_TAG_NAME (type) == NULL |
220 | && (TYPE_CODE (type) == TYPE_CODE_ENUM | |
221 | || TYPE_CODE (type) == TYPE_CODE_STRUCT | |
222 | || TYPE_CODE (type) == TYPE_CODE_UNION)); | |
223 | if (is_anon) | |
224 | { | |
225 | struct type *last = otype; | |
226 | ||
227 | /* Find the last typedef for the type. */ | |
228 | while (TYPE_TARGET_TYPE (last) != NULL | |
229 | && (TYPE_CODE (TYPE_TARGET_TYPE (last)) | |
230 | == TYPE_CODE_TYPEDEF)) | |
231 | last = TYPE_TARGET_TYPE (last); | |
232 | ||
233 | /* If there is only one typedef for this anonymous type, | |
234 | do not substitute it. */ | |
235 | if (type == otype) | |
236 | return 0; | |
237 | else | |
238 | /* Use the last typedef seen as the type for this | |
239 | anonymous type. */ | |
240 | type = last; | |
241 | } | |
242 | ||
243 | buf = mem_fileopen (); | |
244 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
245 | { | |
246 | type_print (type, "", buf, -1); | |
247 | } | |
248 | ||
249 | /* If type_print threw an exception, there is little point | |
250 | in continuing, so just bow out gracefully. */ | |
251 | if (except.reason < 0) | |
252 | { | |
253 | ui_file_delete (buf); | |
254 | return 0; | |
255 | } | |
256 | ||
257 | name = ui_file_obsavestring (buf, &info->obstack, &len); | |
258 | ui_file_delete (buf); | |
259 | ||
260 | /* Turn the result into a new tree. Note that this | |
261 | tree will contain pointers into NAME, so NAME cannot | |
262 | be free'd until all typedef conversion is done and | |
263 | the final result is converted into a string. */ | |
264 | i = cp_demangled_name_to_comp (name, NULL); | |
265 | if (i != NULL) | |
266 | { | |
267 | /* Merge the two trees. */ | |
268 | cp_merge_demangle_parse_infos (info, ret_comp, i); | |
269 | ||
270 | /* Replace any newly introduced typedefs -- but not | |
271 | if the type is anonymous (that would lead to infinite | |
272 | looping). */ | |
273 | if (!is_anon) | |
2621e0fd | 274 | replace_typedefs (info, ret_comp, finder, data); |
3a93a0c2 KS |
275 | } |
276 | else | |
277 | { | |
278 | /* This shouldn't happen unless the type printer has | |
279 | output something that the name parser cannot grok. | |
280 | Nonetheless, an ounce of prevention... | |
281 | ||
282 | Canonicalize the name again, and store it in the | |
283 | current node (RET_COMP). */ | |
284 | char *canon = cp_canonicalize_string_no_typedefs (name); | |
285 | ||
286 | if (canon != NULL) | |
287 | { | |
288 | /* Copy the canonicalization into the obstack and | |
289 | free CANON. */ | |
290 | name = copy_string_to_obstack (&info->obstack, canon, &len); | |
291 | xfree (canon); | |
292 | } | |
293 | ||
294 | ret_comp->u.s_name.s = name; | |
295 | ret_comp->u.s_name.len = len; | |
296 | } | |
297 | ||
298 | return 1; | |
299 | } | |
300 | } | |
301 | ||
302 | return 0; | |
303 | } | |
304 | ||
305 | /* Replace any typedefs appearing in the qualified name | |
306 | (DEMANGLE_COMPONENT_QUAL_NAME) represented in RET_COMP for the name parse | |
307 | given in INFO. */ | |
308 | ||
309 | static void | |
310 | replace_typedefs_qualified_name (struct demangle_parse_info *info, | |
2621e0fd TT |
311 | struct demangle_component *ret_comp, |
312 | canonicalization_ftype *finder, | |
313 | void *data) | |
3a93a0c2 KS |
314 | { |
315 | long len; | |
316 | char *name; | |
317 | struct ui_file *buf = mem_fileopen (); | |
318 | struct demangle_component *comp = ret_comp; | |
319 | ||
320 | /* Walk each node of the qualified name, reconstructing the name of | |
321 | this element. With every node, check for any typedef substitutions. | |
322 | If a substitution has occurred, replace the qualified name node | |
323 | with a DEMANGLE_COMPONENT_NAME node representing the new, typedef- | |
324 | substituted name. */ | |
325 | while (comp->type == DEMANGLE_COMPONENT_QUAL_NAME) | |
326 | { | |
327 | if (d_left (comp)->type == DEMANGLE_COMPONENT_NAME) | |
328 | { | |
329 | struct demangle_component new; | |
330 | ||
331 | ui_file_write (buf, d_left (comp)->u.s_name.s, | |
332 | d_left (comp)->u.s_name.len); | |
333 | name = ui_file_obsavestring (buf, &info->obstack, &len); | |
334 | new.type = DEMANGLE_COMPONENT_NAME; | |
335 | new.u.s_name.s = name; | |
336 | new.u.s_name.len = len; | |
2621e0fd | 337 | if (inspect_type (info, &new, finder, data)) |
3a93a0c2 KS |
338 | { |
339 | char *n, *s; | |
340 | long slen; | |
341 | ||
342 | /* A typedef was substituted in NEW. Convert it to a | |
343 | string and replace the top DEMANGLE_COMPONENT_QUAL_NAME | |
344 | node. */ | |
345 | ||
346 | ui_file_rewind (buf); | |
347 | n = cp_comp_to_string (&new, 100); | |
348 | if (n == NULL) | |
349 | { | |
350 | /* If something went astray, abort typedef substitutions. */ | |
351 | ui_file_delete (buf); | |
352 | return; | |
353 | } | |
354 | ||
355 | s = copy_string_to_obstack (&info->obstack, n, &slen); | |
356 | xfree (n); | |
357 | ||
358 | d_left (ret_comp)->type = DEMANGLE_COMPONENT_NAME; | |
359 | d_left (ret_comp)->u.s_name.s = s; | |
360 | d_left (ret_comp)->u.s_name.len = slen; | |
361 | d_right (ret_comp) = d_right (comp); | |
362 | comp = ret_comp; | |
363 | continue; | |
364 | } | |
365 | } | |
366 | else | |
367 | { | |
368 | /* The current node is not a name, so simply replace any | |
369 | typedefs in it. Then print it to the stream to continue | |
370 | checking for more typedefs in the tree. */ | |
2621e0fd | 371 | replace_typedefs (info, d_left (comp), finder, data); |
3a93a0c2 KS |
372 | name = cp_comp_to_string (d_left (comp), 100); |
373 | if (name == NULL) | |
374 | { | |
375 | /* If something went astray, abort typedef substitutions. */ | |
376 | ui_file_delete (buf); | |
377 | return; | |
378 | } | |
379 | fputs_unfiltered (name, buf); | |
380 | xfree (name); | |
381 | } | |
2621e0fd | 382 | |
3a93a0c2 KS |
383 | ui_file_write (buf, "::", 2); |
384 | comp = d_right (comp); | |
385 | } | |
386 | ||
387 | /* If the next component is DEMANGLE_COMPONENT_NAME, save the qualified | |
388 | name assembled above and append the name given by COMP. Then use this | |
389 | reassembled name to check for a typedef. */ | |
390 | ||
391 | if (comp->type == DEMANGLE_COMPONENT_NAME) | |
392 | { | |
393 | ui_file_write (buf, comp->u.s_name.s, comp->u.s_name.len); | |
394 | name = ui_file_obsavestring (buf, &info->obstack, &len); | |
395 | ||
396 | /* Replace the top (DEMANGLE_COMPONENT_QUAL_NAME) node | |
397 | with a DEMANGLE_COMPONENT_NAME node containing the whole | |
398 | name. */ | |
399 | ret_comp->type = DEMANGLE_COMPONENT_NAME; | |
400 | ret_comp->u.s_name.s = name; | |
401 | ret_comp->u.s_name.len = len; | |
2621e0fd | 402 | inspect_type (info, ret_comp, finder, data); |
3a93a0c2 KS |
403 | } |
404 | else | |
2621e0fd | 405 | replace_typedefs (info, comp, finder, data); |
3a93a0c2 KS |
406 | |
407 | ui_file_delete (buf); | |
408 | } | |
409 | ||
410 | ||
411 | /* A function to check const and volatile qualifiers for argument types. | |
412 | ||
413 | "Parameter declarations that differ only in the presence | |
414 | or absence of `const' and/or `volatile' are equivalent." | |
415 | C++ Standard N3290, clause 13.1.3 #4. */ | |
416 | ||
417 | static void | |
418 | check_cv_qualifiers (struct demangle_component *ret_comp) | |
419 | { | |
420 | while (d_left (ret_comp) != NULL | |
421 | && (d_left (ret_comp)->type == DEMANGLE_COMPONENT_CONST | |
422 | || d_left (ret_comp)->type == DEMANGLE_COMPONENT_VOLATILE)) | |
423 | { | |
424 | d_left (ret_comp) = d_left (d_left (ret_comp)); | |
425 | } | |
426 | } | |
427 | ||
428 | /* Walk the parse tree given by RET_COMP, replacing any typedefs with | |
429 | their basic types. */ | |
430 | ||
431 | static void | |
432 | replace_typedefs (struct demangle_parse_info *info, | |
2621e0fd TT |
433 | struct demangle_component *ret_comp, |
434 | canonicalization_ftype *finder, | |
435 | void *data) | |
3a93a0c2 KS |
436 | { |
437 | if (ret_comp) | |
438 | { | |
2621e0fd TT |
439 | if (finder != NULL |
440 | && (ret_comp->type == DEMANGLE_COMPONENT_NAME | |
441 | || ret_comp->type == DEMANGLE_COMPONENT_QUAL_NAME | |
442 | || ret_comp->type == DEMANGLE_COMPONENT_TEMPLATE | |
443 | || ret_comp->type == DEMANGLE_COMPONENT_BUILTIN_TYPE)) | |
444 | { | |
445 | char *local_name = cp_comp_to_string (ret_comp, 10); | |
446 | ||
447 | if (local_name != NULL) | |
448 | { | |
449 | struct symbol *sym; | |
450 | volatile struct gdb_exception except; | |
451 | ||
452 | sym = NULL; | |
453 | TRY_CATCH (except, RETURN_MASK_ALL) | |
454 | { | |
455 | sym = lookup_symbol (local_name, 0, VAR_DOMAIN, 0); | |
456 | } | |
457 | xfree (local_name); | |
458 | ||
459 | if (except.reason >= 0 && sym != NULL) | |
460 | { | |
461 | struct type *otype = SYMBOL_TYPE (sym); | |
462 | const char *new_name = (*finder) (otype, data); | |
463 | ||
464 | if (new_name != NULL) | |
465 | { | |
466 | ret_comp->type = DEMANGLE_COMPONENT_NAME; | |
467 | ret_comp->u.s_name.s = new_name; | |
468 | ret_comp->u.s_name.len = strlen (new_name); | |
469 | return; | |
470 | } | |
471 | } | |
472 | } | |
473 | } | |
474 | ||
3a93a0c2 KS |
475 | switch (ret_comp->type) |
476 | { | |
477 | case DEMANGLE_COMPONENT_ARGLIST: | |
478 | check_cv_qualifiers (ret_comp); | |
479 | /* Fall through */ | |
480 | ||
481 | case DEMANGLE_COMPONENT_FUNCTION_TYPE: | |
482 | case DEMANGLE_COMPONENT_TEMPLATE: | |
483 | case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST: | |
484 | case DEMANGLE_COMPONENT_TYPED_NAME: | |
2621e0fd TT |
485 | replace_typedefs (info, d_left (ret_comp), finder, data); |
486 | replace_typedefs (info, d_right (ret_comp), finder, data); | |
3a93a0c2 KS |
487 | break; |
488 | ||
489 | case DEMANGLE_COMPONENT_NAME: | |
2621e0fd | 490 | inspect_type (info, ret_comp, finder, data); |
3a93a0c2 KS |
491 | break; |
492 | ||
493 | case DEMANGLE_COMPONENT_QUAL_NAME: | |
2621e0fd | 494 | replace_typedefs_qualified_name (info, ret_comp, finder, data); |
3a93a0c2 KS |
495 | break; |
496 | ||
497 | case DEMANGLE_COMPONENT_LOCAL_NAME: | |
498 | case DEMANGLE_COMPONENT_CTOR: | |
499 | case DEMANGLE_COMPONENT_ARRAY_TYPE: | |
500 | case DEMANGLE_COMPONENT_PTRMEM_TYPE: | |
2621e0fd | 501 | replace_typedefs (info, d_right (ret_comp), finder, data); |
3a93a0c2 KS |
502 | break; |
503 | ||
504 | case DEMANGLE_COMPONENT_CONST: | |
505 | case DEMANGLE_COMPONENT_RESTRICT: | |
506 | case DEMANGLE_COMPONENT_VOLATILE: | |
507 | case DEMANGLE_COMPONENT_VOLATILE_THIS: | |
508 | case DEMANGLE_COMPONENT_CONST_THIS: | |
509 | case DEMANGLE_COMPONENT_RESTRICT_THIS: | |
510 | case DEMANGLE_COMPONENT_POINTER: | |
511 | case DEMANGLE_COMPONENT_REFERENCE: | |
2621e0fd | 512 | replace_typedefs (info, d_left (ret_comp), finder, data); |
3a93a0c2 KS |
513 | break; |
514 | ||
515 | default: | |
516 | break; | |
517 | } | |
518 | } | |
519 | } | |
520 | ||
521 | /* Parse STRING and convert it to canonical form, resolving any typedefs. | |
522 | If parsing fails, or if STRING is already canonical, return NULL. | |
523 | Otherwise return the canonical form. The return value is allocated via | |
2621e0fd TT |
524 | xmalloc. If FINDER is not NULL, then type components are passed to |
525 | FINDER to be looked up. DATA is passed verbatim to FINDER. */ | |
3a93a0c2 KS |
526 | |
527 | char * | |
2621e0fd TT |
528 | cp_canonicalize_string_full (const char *string, |
529 | canonicalization_ftype *finder, | |
530 | void *data) | |
3a93a0c2 KS |
531 | { |
532 | char *ret; | |
533 | unsigned int estimated_len; | |
534 | struct demangle_parse_info *info; | |
535 | ||
536 | ret = NULL; | |
537 | estimated_len = strlen (string) * 2; | |
538 | info = cp_demangled_name_to_comp (string, NULL); | |
539 | if (info != NULL) | |
540 | { | |
541 | /* Replace all the typedefs in the tree. */ | |
2621e0fd | 542 | replace_typedefs (info, info->tree, finder, data); |
3a93a0c2 KS |
543 | |
544 | /* Convert the tree back into a string. */ | |
545 | ret = cp_comp_to_string (info->tree, estimated_len); | |
546 | gdb_assert (ret != NULL); | |
547 | ||
548 | /* Free the parse information. */ | |
549 | cp_demangled_name_parse_free (info); | |
550 | ||
551 | /* Finally, compare the original string with the computed | |
552 | name, returning NULL if they are the same. */ | |
553 | if (strcmp (string, ret) == 0) | |
554 | { | |
555 | xfree (ret); | |
556 | return NULL; | |
557 | } | |
558 | } | |
559 | ||
560 | return ret; | |
561 | } | |
562 | ||
2621e0fd TT |
563 | /* Like cp_canonicalize_string_full, but always passes NULL for |
564 | FINDER. */ | |
565 | ||
566 | char * | |
567 | cp_canonicalize_string_no_typedefs (const char *string) | |
568 | { | |
569 | return cp_canonicalize_string_full (string, NULL, NULL); | |
570 | } | |
571 | ||
f88e9fd3 DJ |
572 | /* Parse STRING and convert it to canonical form. If parsing fails, |
573 | or if STRING is already canonical, return NULL. Otherwise return | |
574 | the canonical form. The return value is allocated via xmalloc. */ | |
9219021c | 575 | |
fb4c6eba DJ |
576 | char * |
577 | cp_canonicalize_string (const char *string) | |
578 | { | |
3a93a0c2 | 579 | struct demangle_parse_info *info; |
f88e9fd3 | 580 | unsigned int estimated_len; |
fb4c6eba | 581 | char *ret; |
9219021c | 582 | |
f88e9fd3 DJ |
583 | if (cp_already_canonical (string)) |
584 | return NULL; | |
9219021c | 585 | |
3a93a0c2 KS |
586 | info = cp_demangled_name_to_comp (string, NULL); |
587 | if (info == NULL) | |
fb4c6eba | 588 | return NULL; |
9219021c | 589 | |
f88e9fd3 | 590 | estimated_len = strlen (string) * 2; |
3a93a0c2 KS |
591 | ret = cp_comp_to_string (info->tree, estimated_len); |
592 | cp_demangled_name_parse_free (info); | |
9219021c | 593 | |
9934703b JK |
594 | if (ret == NULL) |
595 | { | |
596 | warning (_("internal error: string \"%s\" failed to be canonicalized"), | |
597 | string); | |
598 | return NULL; | |
599 | } | |
600 | ||
f88e9fd3 DJ |
601 | if (strcmp (string, ret) == 0) |
602 | { | |
603 | xfree (ret); | |
604 | return NULL; | |
605 | } | |
de17c821 | 606 | |
fb4c6eba DJ |
607 | return ret; |
608 | } | |
de17c821 | 609 | |
aff410f1 MS |
610 | /* Convert a mangled name to a demangle_component tree. *MEMORY is |
611 | set to the block of used memory that should be freed when finished | |
612 | with the tree. DEMANGLED_P is set to the char * that should be | |
613 | freed when finished with the tree, or NULL if none was needed. | |
614 | OPTIONS will be passed to the demangler. */ | |
de17c821 | 615 | |
3a93a0c2 | 616 | static struct demangle_parse_info * |
fb4c6eba DJ |
617 | mangled_name_to_comp (const char *mangled_name, int options, |
618 | void **memory, char **demangled_p) | |
de17c821 | 619 | { |
fb4c6eba | 620 | char *demangled_name; |
3a93a0c2 | 621 | struct demangle_parse_info *info; |
de17c821 | 622 | |
fb4c6eba DJ |
623 | /* If it looks like a v3 mangled name, then try to go directly |
624 | to trees. */ | |
625 | if (mangled_name[0] == '_' && mangled_name[1] == 'Z') | |
de17c821 | 626 | { |
3a93a0c2 KS |
627 | struct demangle_component *ret; |
628 | ||
aff410f1 MS |
629 | ret = cplus_demangle_v3_components (mangled_name, |
630 | options, memory); | |
fb4c6eba DJ |
631 | if (ret) |
632 | { | |
3a93a0c2 KS |
633 | info = cp_new_demangle_parse_info (); |
634 | info->tree = ret; | |
fb4c6eba | 635 | *demangled_p = NULL; |
3a93a0c2 | 636 | return info; |
fb4c6eba | 637 | } |
de17c821 DJ |
638 | } |
639 | ||
aff410f1 MS |
640 | /* If it doesn't, or if that failed, then try to demangle the |
641 | name. */ | |
8de20a37 | 642 | demangled_name = gdb_demangle (mangled_name, options); |
fb4c6eba DJ |
643 | if (demangled_name == NULL) |
644 | return NULL; | |
645 | ||
aff410f1 MS |
646 | /* If we could demangle the name, parse it to build the component |
647 | tree. */ | |
3a93a0c2 | 648 | info = cp_demangled_name_to_comp (demangled_name, NULL); |
de17c821 | 649 | |
3a93a0c2 | 650 | if (info == NULL) |
fb4c6eba | 651 | { |
6c761d9c | 652 | xfree (demangled_name); |
fb4c6eba DJ |
653 | return NULL; |
654 | } | |
de17c821 | 655 | |
fb4c6eba | 656 | *demangled_p = demangled_name; |
3a93a0c2 | 657 | return info; |
de17c821 DJ |
658 | } |
659 | ||
660 | /* Return the name of the class containing method PHYSNAME. */ | |
661 | ||
662 | char * | |
31c27f77 | 663 | cp_class_name_from_physname (const char *physname) |
de17c821 | 664 | { |
de237128 | 665 | void *storage = NULL; |
fb4c6eba | 666 | char *demangled_name = NULL, *ret; |
5e5100cb | 667 | struct demangle_component *ret_comp, *prev_comp, *cur_comp; |
3a93a0c2 | 668 | struct demangle_parse_info *info; |
fb4c6eba DJ |
669 | int done; |
670 | ||
3a93a0c2 KS |
671 | info = mangled_name_to_comp (physname, DMGL_ANSI, |
672 | &storage, &demangled_name); | |
673 | if (info == NULL) | |
de17c821 DJ |
674 | return NULL; |
675 | ||
fb4c6eba | 676 | done = 0; |
3a93a0c2 | 677 | ret_comp = info->tree; |
5e5100cb | 678 | |
aff410f1 MS |
679 | /* First strip off any qualifiers, if we have a function or |
680 | method. */ | |
fb4c6eba DJ |
681 | while (!done) |
682 | switch (ret_comp->type) | |
683 | { | |
fb4c6eba DJ |
684 | case DEMANGLE_COMPONENT_CONST: |
685 | case DEMANGLE_COMPONENT_RESTRICT: | |
686 | case DEMANGLE_COMPONENT_VOLATILE: | |
687 | case DEMANGLE_COMPONENT_CONST_THIS: | |
688 | case DEMANGLE_COMPONENT_RESTRICT_THIS: | |
689 | case DEMANGLE_COMPONENT_VOLATILE_THIS: | |
690 | case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL: | |
fb4c6eba DJ |
691 | ret_comp = d_left (ret_comp); |
692 | break; | |
5e5100cb DJ |
693 | default: |
694 | done = 1; | |
695 | break; | |
696 | } | |
697 | ||
698 | /* If what we have now is a function, discard the argument list. */ | |
699 | if (ret_comp->type == DEMANGLE_COMPONENT_TYPED_NAME) | |
700 | ret_comp = d_left (ret_comp); | |
701 | ||
702 | /* If what we have now is a template, strip off the template | |
703 | arguments. The left subtree may be a qualified name. */ | |
704 | if (ret_comp->type == DEMANGLE_COMPONENT_TEMPLATE) | |
705 | ret_comp = d_left (ret_comp); | |
706 | ||
aff410f1 MS |
707 | /* What we have now should be a name, possibly qualified. |
708 | Additional qualifiers could live in the left subtree or the right | |
709 | subtree. Find the last piece. */ | |
5e5100cb DJ |
710 | done = 0; |
711 | prev_comp = NULL; | |
712 | cur_comp = ret_comp; | |
713 | while (!done) | |
714 | switch (cur_comp->type) | |
715 | { | |
716 | case DEMANGLE_COMPONENT_QUAL_NAME: | |
717 | case DEMANGLE_COMPONENT_LOCAL_NAME: | |
718 | prev_comp = cur_comp; | |
719 | cur_comp = d_right (cur_comp); | |
720 | break; | |
fb4c6eba | 721 | case DEMANGLE_COMPONENT_TEMPLATE: |
5e5100cb | 722 | case DEMANGLE_COMPONENT_NAME: |
fb4c6eba DJ |
723 | case DEMANGLE_COMPONENT_CTOR: |
724 | case DEMANGLE_COMPONENT_DTOR: | |
725 | case DEMANGLE_COMPONENT_OPERATOR: | |
726 | case DEMANGLE_COMPONENT_EXTENDED_OPERATOR: | |
727 | done = 1; | |
728 | break; | |
729 | default: | |
730 | done = 1; | |
5e5100cb | 731 | cur_comp = NULL; |
fb4c6eba DJ |
732 | break; |
733 | } | |
734 | ||
735 | ret = NULL; | |
5e5100cb | 736 | if (cur_comp != NULL && prev_comp != NULL) |
de17c821 | 737 | { |
5e5100cb | 738 | /* We want to discard the rightmost child of PREV_COMP. */ |
fb4c6eba | 739 | *prev_comp = *d_left (prev_comp); |
aff410f1 MS |
740 | /* The ten is completely arbitrary; we don't have a good |
741 | estimate. */ | |
5e5100cb | 742 | ret = cp_comp_to_string (ret_comp, 10); |
de17c821 DJ |
743 | } |
744 | ||
fb4c6eba | 745 | xfree (storage); |
3a93a0c2 KS |
746 | xfree (demangled_name); |
747 | cp_demangled_name_parse_free (info); | |
de17c821 DJ |
748 | return ret; |
749 | } | |
750 | ||
aff410f1 MS |
751 | /* Return the child of COMP which is the basename of a method, |
752 | variable, et cetera. All scope qualifiers are discarded, but | |
753 | template arguments will be included. The component tree may be | |
754 | modified. */ | |
de17c821 | 755 | |
5e5100cb DJ |
756 | static struct demangle_component * |
757 | unqualified_name_from_comp (struct demangle_component *comp) | |
de17c821 | 758 | { |
5e5100cb | 759 | struct demangle_component *ret_comp = comp, *last_template; |
fb4c6eba DJ |
760 | int done; |
761 | ||
fb4c6eba | 762 | done = 0; |
5e5100cb | 763 | last_template = NULL; |
fb4c6eba DJ |
764 | while (!done) |
765 | switch (ret_comp->type) | |
766 | { | |
767 | case DEMANGLE_COMPONENT_QUAL_NAME: | |
768 | case DEMANGLE_COMPONENT_LOCAL_NAME: | |
fb4c6eba DJ |
769 | ret_comp = d_right (ret_comp); |
770 | break; | |
5e5100cb DJ |
771 | case DEMANGLE_COMPONENT_TYPED_NAME: |
772 | ret_comp = d_left (ret_comp); | |
773 | break; | |
774 | case DEMANGLE_COMPONENT_TEMPLATE: | |
775 | gdb_assert (last_template == NULL); | |
776 | last_template = ret_comp; | |
777 | ret_comp = d_left (ret_comp); | |
778 | break; | |
fb4c6eba DJ |
779 | case DEMANGLE_COMPONENT_CONST: |
780 | case DEMANGLE_COMPONENT_RESTRICT: | |
781 | case DEMANGLE_COMPONENT_VOLATILE: | |
782 | case DEMANGLE_COMPONENT_CONST_THIS: | |
783 | case DEMANGLE_COMPONENT_RESTRICT_THIS: | |
784 | case DEMANGLE_COMPONENT_VOLATILE_THIS: | |
785 | case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL: | |
786 | ret_comp = d_left (ret_comp); | |
787 | break; | |
788 | case DEMANGLE_COMPONENT_NAME: | |
fb4c6eba DJ |
789 | case DEMANGLE_COMPONENT_CTOR: |
790 | case DEMANGLE_COMPONENT_DTOR: | |
791 | case DEMANGLE_COMPONENT_OPERATOR: | |
792 | case DEMANGLE_COMPONENT_EXTENDED_OPERATOR: | |
793 | done = 1; | |
794 | break; | |
795 | default: | |
5e5100cb | 796 | return NULL; |
fb4c6eba DJ |
797 | break; |
798 | } | |
799 | ||
5e5100cb DJ |
800 | if (last_template) |
801 | { | |
802 | d_left (last_template) = ret_comp; | |
803 | return last_template; | |
804 | } | |
805 | ||
806 | return ret_comp; | |
807 | } | |
808 | ||
809 | /* Return the name of the method whose linkage name is PHYSNAME. */ | |
810 | ||
811 | char * | |
812 | method_name_from_physname (const char *physname) | |
813 | { | |
de237128 | 814 | void *storage = NULL; |
5e5100cb DJ |
815 | char *demangled_name = NULL, *ret; |
816 | struct demangle_component *ret_comp; | |
3a93a0c2 | 817 | struct demangle_parse_info *info; |
5e5100cb | 818 | |
3a93a0c2 KS |
819 | info = mangled_name_to_comp (physname, DMGL_ANSI, |
820 | &storage, &demangled_name); | |
821 | if (info == NULL) | |
5e5100cb DJ |
822 | return NULL; |
823 | ||
3a93a0c2 | 824 | ret_comp = unqualified_name_from_comp (info->tree); |
5e5100cb | 825 | |
fb4c6eba DJ |
826 | ret = NULL; |
827 | if (ret_comp != NULL) | |
aff410f1 MS |
828 | /* The ten is completely arbitrary; we don't have a good |
829 | estimate. */ | |
fb4c6eba DJ |
830 | ret = cp_comp_to_string (ret_comp, 10); |
831 | ||
832 | xfree (storage); | |
3a93a0c2 KS |
833 | xfree (demangled_name); |
834 | cp_demangled_name_parse_free (info); | |
fb4c6eba DJ |
835 | return ret; |
836 | } | |
de17c821 | 837 | |
5e5100cb DJ |
838 | /* If FULL_NAME is the demangled name of a C++ function (including an |
839 | arg list, possibly including namespace/class qualifications), | |
840 | return a new string containing only the function name (without the | |
841 | arg list/class qualifications). Otherwise, return NULL. The | |
842 | caller is responsible for freeing the memory in question. */ | |
843 | ||
844 | char * | |
845 | cp_func_name (const char *full_name) | |
846 | { | |
5e5100cb DJ |
847 | char *ret; |
848 | struct demangle_component *ret_comp; | |
3a93a0c2 | 849 | struct demangle_parse_info *info; |
5e5100cb | 850 | |
3a93a0c2 KS |
851 | info = cp_demangled_name_to_comp (full_name, NULL); |
852 | if (!info) | |
5e5100cb DJ |
853 | return NULL; |
854 | ||
3a93a0c2 | 855 | ret_comp = unqualified_name_from_comp (info->tree); |
5e5100cb DJ |
856 | |
857 | ret = NULL; | |
858 | if (ret_comp != NULL) | |
859 | ret = cp_comp_to_string (ret_comp, 10); | |
860 | ||
3a93a0c2 | 861 | cp_demangled_name_parse_free (info); |
5e5100cb DJ |
862 | return ret; |
863 | } | |
864 | ||
865 | /* DEMANGLED_NAME is the name of a function, including parameters and | |
866 | (optionally) a return type. Return the name of the function without | |
867 | parameters or return type, or NULL if we can not parse the name. */ | |
868 | ||
3567439c DJ |
869 | char * |
870 | cp_remove_params (const char *demangled_name) | |
5e5100cb DJ |
871 | { |
872 | int done = 0; | |
873 | struct demangle_component *ret_comp; | |
3a93a0c2 | 874 | struct demangle_parse_info *info; |
5e5100cb DJ |
875 | char *ret = NULL; |
876 | ||
877 | if (demangled_name == NULL) | |
878 | return NULL; | |
879 | ||
3a93a0c2 KS |
880 | info = cp_demangled_name_to_comp (demangled_name, NULL); |
881 | if (info == NULL) | |
5e5100cb DJ |
882 | return NULL; |
883 | ||
884 | /* First strip off any qualifiers, if we have a function or method. */ | |
3a93a0c2 | 885 | ret_comp = info->tree; |
5e5100cb DJ |
886 | while (!done) |
887 | switch (ret_comp->type) | |
888 | { | |
889 | case DEMANGLE_COMPONENT_CONST: | |
890 | case DEMANGLE_COMPONENT_RESTRICT: | |
891 | case DEMANGLE_COMPONENT_VOLATILE: | |
892 | case DEMANGLE_COMPONENT_CONST_THIS: | |
893 | case DEMANGLE_COMPONENT_RESTRICT_THIS: | |
894 | case DEMANGLE_COMPONENT_VOLATILE_THIS: | |
895 | case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL: | |
896 | ret_comp = d_left (ret_comp); | |
897 | break; | |
898 | default: | |
899 | done = 1; | |
900 | break; | |
901 | } | |
902 | ||
903 | /* What we have now should be a function. Return its name. */ | |
904 | if (ret_comp->type == DEMANGLE_COMPONENT_TYPED_NAME) | |
905 | ret = cp_comp_to_string (d_left (ret_comp), 10); | |
906 | ||
3a93a0c2 | 907 | cp_demangled_name_parse_free (info); |
5e5100cb DJ |
908 | return ret; |
909 | } | |
910 | ||
fb4c6eba DJ |
911 | /* Here are some random pieces of trivia to keep in mind while trying |
912 | to take apart demangled names: | |
de17c821 | 913 | |
fb4c6eba DJ |
914 | - Names can contain function arguments or templates, so the process |
915 | has to be, to some extent recursive: maybe keep track of your | |
916 | depth based on encountering <> and (). | |
917 | ||
918 | - Parentheses don't just have to happen at the end of a name: they | |
919 | can occur even if the name in question isn't a function, because | |
920 | a template argument might be a type that's a function. | |
921 | ||
922 | - Conversely, even if you're trying to deal with a function, its | |
923 | demangled name might not end with ')': it could be a const or | |
924 | volatile class method, in which case it ends with "const" or | |
925 | "volatile". | |
926 | ||
927 | - Parentheses are also used in anonymous namespaces: a variable | |
928 | 'foo' in an anonymous namespace gets demangled as "(anonymous | |
929 | namespace)::foo". | |
930 | ||
931 | - And operator names can contain parentheses or angle brackets. */ | |
932 | ||
933 | /* FIXME: carlton/2003-03-13: We have several functions here with | |
934 | overlapping functionality; can we combine them? Also, do they | |
935 | handle all the above considerations correctly? */ | |
de17c821 | 936 | |
9219021c DC |
937 | |
938 | /* This returns the length of first component of NAME, which should be | |
939 | the demangled name of a C++ variable/function/method/etc. | |
940 | Specifically, it returns the index of the first colon forming the | |
941 | boundary of the first component: so, given 'A::foo' or 'A::B::foo' | |
942 | it returns the 1, and given 'foo', it returns 0. */ | |
943 | ||
b2a7f303 DC |
944 | /* The character in NAME indexed by the return value is guaranteed to |
945 | always be either ':' or '\0'. */ | |
9219021c DC |
946 | |
947 | /* NOTE: carlton/2003-03-13: This function is currently only intended | |
948 | for internal use: it's probably not entirely safe when called on | |
b2a7f303 DC |
949 | user-generated input, because some of the 'index += 2' lines in |
950 | cp_find_first_component_aux might go past the end of malformed | |
951 | input. */ | |
952 | ||
953 | unsigned int | |
954 | cp_find_first_component (const char *name) | |
955 | { | |
956 | return cp_find_first_component_aux (name, 0); | |
957 | } | |
958 | ||
959 | /* Helper function for cp_find_first_component. Like that function, | |
960 | it returns the length of the first component of NAME, but to make | |
961 | the recursion easier, it also stops if it reaches an unexpected ')' | |
962 | or '>' if the value of PERMISSIVE is nonzero. */ | |
9219021c DC |
963 | |
964 | /* Let's optimize away calls to strlen("operator"). */ | |
965 | ||
966 | #define LENGTH_OF_OPERATOR 8 | |
967 | ||
b2a7f303 DC |
968 | static unsigned int |
969 | cp_find_first_component_aux (const char *name, int permissive) | |
9219021c | 970 | { |
9219021c | 971 | unsigned int index = 0; |
0f20eeea DC |
972 | /* Operator names can show up in unexpected places. Since these can |
973 | contain parentheses or angle brackets, they can screw up the | |
974 | recursion. But not every string 'operator' is part of an | |
975 | operater name: e.g. you could have a variable 'cooperator'. So | |
976 | this variable tells us whether or not we should treat the string | |
977 | 'operator' as starting an operator. */ | |
978 | int operator_possible = 1; | |
9219021c DC |
979 | |
980 | for (;; ++index) | |
981 | { | |
982 | switch (name[index]) | |
983 | { | |
984 | case '<': | |
985 | /* Template; eat it up. The calls to cp_first_component | |
986 | should only return (I hope!) when they reach the '>' | |
987 | terminating the component or a '::' between two | |
988 | components. (Hence the '+ 2'.) */ | |
989 | index += 1; | |
b2a7f303 | 990 | for (index += cp_find_first_component_aux (name + index, 1); |
9219021c | 991 | name[index] != '>'; |
b2a7f303 | 992 | index += cp_find_first_component_aux (name + index, 1)) |
9219021c | 993 | { |
b2a7f303 DC |
994 | if (name[index] != ':') |
995 | { | |
996 | demangled_name_complaint (name); | |
997 | return strlen (name); | |
998 | } | |
9219021c DC |
999 | index += 2; |
1000 | } | |
0f20eeea | 1001 | operator_possible = 1; |
9219021c DC |
1002 | break; |
1003 | case '(': | |
1004 | /* Similar comment as to '<'. */ | |
1005 | index += 1; | |
b2a7f303 | 1006 | for (index += cp_find_first_component_aux (name + index, 1); |
9219021c | 1007 | name[index] != ')'; |
b2a7f303 | 1008 | index += cp_find_first_component_aux (name + index, 1)) |
9219021c | 1009 | { |
b2a7f303 DC |
1010 | if (name[index] != ':') |
1011 | { | |
1012 | demangled_name_complaint (name); | |
1013 | return strlen (name); | |
1014 | } | |
9219021c DC |
1015 | index += 2; |
1016 | } | |
0f20eeea | 1017 | operator_possible = 1; |
9219021c DC |
1018 | break; |
1019 | case '>': | |
1020 | case ')': | |
b2a7f303 | 1021 | if (permissive) |
7a20f2c2 | 1022 | return index; |
b2a7f303 DC |
1023 | else |
1024 | { | |
1025 | demangled_name_complaint (name); | |
1026 | return strlen (name); | |
1027 | } | |
9219021c DC |
1028 | case '\0': |
1029 | case ':': | |
1030 | return index; | |
0f20eeea DC |
1031 | case 'o': |
1032 | /* Operator names can screw up the recursion. */ | |
1033 | if (operator_possible | |
aff410f1 MS |
1034 | && strncmp (name + index, "operator", |
1035 | LENGTH_OF_OPERATOR) == 0) | |
0f20eeea DC |
1036 | { |
1037 | index += LENGTH_OF_OPERATOR; | |
f88e9fd3 | 1038 | while (ISSPACE(name[index])) |
0f20eeea DC |
1039 | ++index; |
1040 | switch (name[index]) | |
1041 | { | |
1042 | /* Skip over one less than the appropriate number of | |
1043 | characters: the for loop will skip over the last | |
1044 | one. */ | |
1045 | case '<': | |
1046 | if (name[index + 1] == '<') | |
1047 | index += 1; | |
1048 | else | |
1049 | index += 0; | |
1050 | break; | |
1051 | case '>': | |
1052 | case '-': | |
1053 | if (name[index + 1] == '>') | |
1054 | index += 1; | |
1055 | else | |
1056 | index += 0; | |
1057 | break; | |
1058 | case '(': | |
1059 | index += 1; | |
1060 | break; | |
1061 | default: | |
1062 | index += 0; | |
1063 | break; | |
1064 | } | |
1065 | } | |
1066 | operator_possible = 0; | |
1067 | break; | |
1068 | case ' ': | |
1069 | case ',': | |
1070 | case '.': | |
1071 | case '&': | |
1072 | case '*': | |
1073 | /* NOTE: carlton/2003-04-18: I'm not sure what the precise | |
1074 | set of relevant characters are here: it's necessary to | |
1075 | include any character that can show up before 'operator' | |
1076 | in a demangled name, and it's safe to include any | |
1077 | character that can't be part of an identifier's name. */ | |
1078 | operator_possible = 1; | |
1079 | break; | |
9219021c | 1080 | default: |
0f20eeea | 1081 | operator_possible = 0; |
9219021c DC |
1082 | break; |
1083 | } | |
1084 | } | |
1085 | } | |
1086 | ||
b2a7f303 DC |
1087 | /* Complain about a demangled name that we don't know how to parse. |
1088 | NAME is the demangled name in question. */ | |
1089 | ||
1090 | static void | |
1091 | demangled_name_complaint (const char *name) | |
1092 | { | |
1093 | complaint (&symfile_complaints, | |
1094 | "unexpected demangled name '%s'", name); | |
1095 | } | |
1096 | ||
9219021c DC |
1097 | /* If NAME is the fully-qualified name of a C++ |
1098 | function/variable/method/etc., this returns the length of its | |
1099 | entire prefix: all of the namespaces and classes that make up its | |
1100 | name. Given 'A::foo', it returns 1, given 'A::B::foo', it returns | |
1101 | 4, given 'foo', it returns 0. */ | |
1102 | ||
1103 | unsigned int | |
1104 | cp_entire_prefix_len (const char *name) | |
1105 | { | |
1106 | unsigned int current_len = cp_find_first_component (name); | |
1107 | unsigned int previous_len = 0; | |
1108 | ||
1109 | while (name[current_len] != '\0') | |
1110 | { | |
1111 | gdb_assert (name[current_len] == ':'); | |
1112 | previous_len = current_len; | |
1113 | /* Skip the '::'. */ | |
1114 | current_len += 2; | |
1115 | current_len += cp_find_first_component (name + current_len); | |
1116 | } | |
1117 | ||
1118 | return previous_len; | |
1119 | } | |
1120 | ||
b6429628 DC |
1121 | /* Overload resolution functions. */ |
1122 | ||
8d577d32 DC |
1123 | /* Test to see if SYM is a symbol that we haven't seen corresponding |
1124 | to a function named OLOAD_NAME. If so, add it to the current | |
aff410f1 | 1125 | completion list. */ |
b6429628 DC |
1126 | |
1127 | static void | |
aff410f1 MS |
1128 | overload_list_add_symbol (struct symbol *sym, |
1129 | const char *oload_name) | |
b6429628 DC |
1130 | { |
1131 | int newsize; | |
1132 | int i; | |
1133 | char *sym_name; | |
1134 | ||
aff410f1 MS |
1135 | /* If there is no type information, we can't do anything, so |
1136 | skip. */ | |
b6429628 DC |
1137 | if (SYMBOL_TYPE (sym) == NULL) |
1138 | return; | |
1139 | ||
aff410f1 | 1140 | /* skip any symbols that we've already considered. */ |
b6429628 | 1141 | for (i = 0; i < sym_return_val_index; ++i) |
8d577d32 DC |
1142 | if (strcmp (SYMBOL_LINKAGE_NAME (sym), |
1143 | SYMBOL_LINKAGE_NAME (sym_return_val[i])) == 0) | |
b6429628 DC |
1144 | return; |
1145 | ||
1146 | /* Get the demangled name without parameters */ | |
3567439c | 1147 | sym_name = cp_remove_params (SYMBOL_NATURAL_NAME (sym)); |
b6429628 DC |
1148 | if (!sym_name) |
1149 | return; | |
1150 | ||
1151 | /* skip symbols that cannot match */ | |
1152 | if (strcmp (sym_name, oload_name) != 0) | |
1153 | { | |
1154 | xfree (sym_name); | |
1155 | return; | |
1156 | } | |
1157 | ||
1158 | xfree (sym_name); | |
1159 | ||
aff410f1 MS |
1160 | /* We have a match for an overload instance, so add SYM to the |
1161 | current list of overload instances */ | |
b6429628 DC |
1162 | if (sym_return_val_index + 3 > sym_return_val_size) |
1163 | { | |
1164 | newsize = (sym_return_val_size *= 2) * sizeof (struct symbol *); | |
aff410f1 MS |
1165 | sym_return_val = (struct symbol **) |
1166 | xrealloc ((char *) sym_return_val, newsize); | |
b6429628 DC |
1167 | } |
1168 | sym_return_val[sym_return_val_index++] = sym; | |
1169 | sym_return_val[sym_return_val_index] = NULL; | |
1170 | } | |
1171 | ||
1172 | /* Return a null-terminated list of pointers to function symbols that | |
8d577d32 | 1173 | are named FUNC_NAME and are visible within NAMESPACE. */ |
b6429628 DC |
1174 | |
1175 | struct symbol ** | |
8d577d32 DC |
1176 | make_symbol_overload_list (const char *func_name, |
1177 | const char *namespace) | |
b6429628 | 1178 | { |
8d577d32 | 1179 | struct cleanup *old_cleanups; |
245040d7 | 1180 | const char *name; |
b6429628 | 1181 | |
8d577d32 DC |
1182 | sym_return_val_size = 100; |
1183 | sym_return_val_index = 0; | |
1184 | sym_return_val = xmalloc ((sym_return_val_size + 1) * | |
1185 | sizeof (struct symbol *)); | |
1186 | sym_return_val[0] = NULL; | |
b6429628 | 1187 | |
8d577d32 DC |
1188 | old_cleanups = make_cleanup (xfree, sym_return_val); |
1189 | ||
1190 | make_symbol_overload_list_using (func_name, namespace); | |
1191 | ||
245040d7 SW |
1192 | if (namespace[0] == '\0') |
1193 | name = func_name; | |
1194 | else | |
1195 | { | |
1196 | char *concatenated_name | |
1197 | = alloca (strlen (namespace) + 2 + strlen (func_name) + 1); | |
1198 | strcpy (concatenated_name, namespace); | |
1199 | strcat (concatenated_name, "::"); | |
1200 | strcat (concatenated_name, func_name); | |
1201 | name = concatenated_name; | |
1202 | } | |
1203 | ||
1204 | make_symbol_overload_list_qualified (name); | |
1205 | ||
8d577d32 DC |
1206 | discard_cleanups (old_cleanups); |
1207 | ||
1208 | return sym_return_val; | |
1209 | } | |
1210 | ||
245040d7 SW |
1211 | /* Add all symbols with a name matching NAME in BLOCK to the overload |
1212 | list. */ | |
1213 | ||
1214 | static void | |
1215 | make_symbol_overload_list_block (const char *name, | |
1216 | const struct block *block) | |
1217 | { | |
8157b174 | 1218 | struct block_iterator iter; |
245040d7 SW |
1219 | struct symbol *sym; |
1220 | ||
8157b174 | 1221 | for (sym = block_iter_name_first (block, name, &iter); |
245040d7 | 1222 | sym != NULL; |
8157b174 | 1223 | sym = block_iter_name_next (name, &iter)) |
245040d7 SW |
1224 | overload_list_add_symbol (sym, name); |
1225 | } | |
1226 | ||
7322dca9 SW |
1227 | /* Adds the function FUNC_NAME from NAMESPACE to the overload set. */ |
1228 | ||
1229 | static void | |
1230 | make_symbol_overload_list_namespace (const char *func_name, | |
1231 | const char *namespace) | |
1232 | { | |
245040d7 SW |
1233 | const char *name; |
1234 | const struct block *block = NULL; | |
1235 | ||
7322dca9 | 1236 | if (namespace[0] == '\0') |
245040d7 | 1237 | name = func_name; |
7322dca9 SW |
1238 | else |
1239 | { | |
1240 | char *concatenated_name | |
1241 | = alloca (strlen (namespace) + 2 + strlen (func_name) + 1); | |
c5504eaf | 1242 | |
7322dca9 SW |
1243 | strcpy (concatenated_name, namespace); |
1244 | strcat (concatenated_name, "::"); | |
1245 | strcat (concatenated_name, func_name); | |
245040d7 | 1246 | name = concatenated_name; |
7322dca9 | 1247 | } |
245040d7 SW |
1248 | |
1249 | /* Look in the static block. */ | |
1250 | block = block_static_block (get_selected_block (0)); | |
eeaafae2 JK |
1251 | if (block) |
1252 | make_symbol_overload_list_block (name, block); | |
245040d7 SW |
1253 | |
1254 | /* Look in the global block. */ | |
1255 | block = block_global_block (block); | |
eeaafae2 JK |
1256 | if (block) |
1257 | make_symbol_overload_list_block (name, block); | |
245040d7 | 1258 | |
7322dca9 SW |
1259 | } |
1260 | ||
aff410f1 MS |
1261 | /* Search the namespace of the given type and namespace of and public |
1262 | base types. */ | |
7322dca9 SW |
1263 | |
1264 | static void | |
1265 | make_symbol_overload_list_adl_namespace (struct type *type, | |
1266 | const char *func_name) | |
1267 | { | |
1268 | char *namespace; | |
0d5cff50 | 1269 | const char *type_name; |
7322dca9 SW |
1270 | int i, prefix_len; |
1271 | ||
aff410f1 MS |
1272 | while (TYPE_CODE (type) == TYPE_CODE_PTR |
1273 | || TYPE_CODE (type) == TYPE_CODE_REF | |
7322dca9 SW |
1274 | || TYPE_CODE (type) == TYPE_CODE_ARRAY |
1275 | || TYPE_CODE (type) == TYPE_CODE_TYPEDEF) | |
1276 | { | |
1277 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) | |
1278 | type = check_typedef(type); | |
1279 | else | |
1280 | type = TYPE_TARGET_TYPE (type); | |
1281 | } | |
1282 | ||
1283 | type_name = TYPE_NAME (type); | |
1284 | ||
7d3fe98e SW |
1285 | if (type_name == NULL) |
1286 | return; | |
1287 | ||
7322dca9 SW |
1288 | prefix_len = cp_entire_prefix_len (type_name); |
1289 | ||
1290 | if (prefix_len != 0) | |
1291 | { | |
1292 | namespace = alloca (prefix_len + 1); | |
1293 | strncpy (namespace, type_name, prefix_len); | |
1294 | namespace[prefix_len] = '\0'; | |
1295 | ||
1296 | make_symbol_overload_list_namespace (func_name, namespace); | |
1297 | } | |
1298 | ||
1299 | /* Check public base type */ | |
1300 | if (TYPE_CODE (type) == TYPE_CODE_CLASS) | |
1301 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) | |
1302 | { | |
1303 | if (BASETYPE_VIA_PUBLIC (type, i)) | |
aff410f1 MS |
1304 | make_symbol_overload_list_adl_namespace (TYPE_BASECLASS (type, |
1305 | i), | |
7322dca9 SW |
1306 | func_name); |
1307 | } | |
1308 | } | |
1309 | ||
b021a221 | 1310 | /* Adds the overload list overload candidates for FUNC_NAME found |
aff410f1 | 1311 | through argument dependent lookup. */ |
7322dca9 SW |
1312 | |
1313 | struct symbol ** | |
1314 | make_symbol_overload_list_adl (struct type **arg_types, int nargs, | |
1315 | const char *func_name) | |
1316 | { | |
1317 | int i; | |
1318 | ||
1319 | gdb_assert (sym_return_val_size != -1); | |
1320 | ||
1321 | for (i = 1; i <= nargs; i++) | |
aff410f1 MS |
1322 | make_symbol_overload_list_adl_namespace (arg_types[i - 1], |
1323 | func_name); | |
7322dca9 SW |
1324 | |
1325 | return sym_return_val; | |
1326 | } | |
1327 | ||
aff410f1 MS |
1328 | /* Used for cleanups to reset the "searched" flag in case of an |
1329 | error. */ | |
19c0c0f8 UW |
1330 | |
1331 | static void | |
1332 | reset_directive_searched (void *data) | |
1333 | { | |
1334 | struct using_direct *direct = data; | |
1335 | direct->searched = 0; | |
1336 | } | |
1337 | ||
8d577d32 DC |
1338 | /* This applies the using directives to add namespaces to search in, |
1339 | and then searches for overloads in all of those namespaces. It | |
1340 | adds the symbols found to sym_return_val. Arguments are as in | |
1341 | make_symbol_overload_list. */ | |
1342 | ||
1343 | static void | |
1344 | make_symbol_overload_list_using (const char *func_name, | |
1345 | const char *namespace) | |
1346 | { | |
19c0c0f8 | 1347 | struct using_direct *current; |
4c3376c8 | 1348 | const struct block *block; |
8d577d32 DC |
1349 | |
1350 | /* First, go through the using directives. If any of them apply, | |
1351 | look in the appropriate namespaces for new functions to match | |
1352 | on. */ | |
b6429628 | 1353 | |
4c3376c8 SW |
1354 | for (block = get_selected_block (0); |
1355 | block != NULL; | |
1356 | block = BLOCK_SUPERBLOCK (block)) | |
1357 | for (current = block_using (block); | |
1358 | current != NULL; | |
1359 | current = current->next) | |
1360 | { | |
19c0c0f8 UW |
1361 | /* Prevent recursive calls. */ |
1362 | if (current->searched) | |
1363 | continue; | |
1364 | ||
aff410f1 MS |
1365 | /* If this is a namespace alias or imported declaration ignore |
1366 | it. */ | |
4c3376c8 SW |
1367 | if (current->alias != NULL || current->declaration != NULL) |
1368 | continue; | |
1369 | ||
1370 | if (strcmp (namespace, current->import_dest) == 0) | |
19c0c0f8 | 1371 | { |
aff410f1 MS |
1372 | /* Mark this import as searched so that the recursive call |
1373 | does not search it again. */ | |
19c0c0f8 UW |
1374 | struct cleanup *old_chain; |
1375 | current->searched = 1; | |
aff410f1 MS |
1376 | old_chain = make_cleanup (reset_directive_searched, |
1377 | current); | |
19c0c0f8 | 1378 | |
aff410f1 MS |
1379 | make_symbol_overload_list_using (func_name, |
1380 | current->import_src); | |
19c0c0f8 UW |
1381 | |
1382 | current->searched = 0; | |
1383 | discard_cleanups (old_chain); | |
1384 | } | |
4c3376c8 | 1385 | } |
b6429628 | 1386 | |
8d577d32 | 1387 | /* Now, add names for this namespace. */ |
7322dca9 | 1388 | make_symbol_overload_list_namespace (func_name, namespace); |
8d577d32 | 1389 | } |
b6429628 | 1390 | |
8d577d32 DC |
1391 | /* This does the bulk of the work of finding overloaded symbols. |
1392 | FUNC_NAME is the name of the overloaded function we're looking for | |
1393 | (possibly including namespace info). */ | |
b6429628 | 1394 | |
8d577d32 DC |
1395 | static void |
1396 | make_symbol_overload_list_qualified (const char *func_name) | |
1397 | { | |
8d577d32 DC |
1398 | struct symtab *s; |
1399 | struct objfile *objfile; | |
1400 | const struct block *b, *surrounding_static_block = 0; | |
b6429628 | 1401 | |
aff410f1 MS |
1402 | /* Look through the partial symtabs for all symbols which begin by |
1403 | matching FUNC_NAME. Make sure we read that symbol table in. */ | |
b6429628 | 1404 | |
ccefe4c4 TT |
1405 | ALL_OBJFILES (objfile) |
1406 | { | |
1407 | if (objfile->sf) | |
1408 | objfile->sf->qf->expand_symtabs_for_function (objfile, func_name); | |
1409 | } | |
b6429628 DC |
1410 | |
1411 | /* Search upwards from currently selected frame (so that we can | |
1412 | complete on local vars. */ | |
1413 | ||
1414 | for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b)) | |
245040d7 | 1415 | make_symbol_overload_list_block (func_name, b); |
b6429628 | 1416 | |
8d577d32 DC |
1417 | surrounding_static_block = block_static_block (get_selected_block (0)); |
1418 | ||
b6429628 DC |
1419 | /* Go through the symtabs and check the externs and statics for |
1420 | symbols which match. */ | |
1421 | ||
11309657 | 1422 | ALL_PRIMARY_SYMTABS (objfile, s) |
b6429628 DC |
1423 | { |
1424 | QUIT; | |
1425 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
245040d7 | 1426 | make_symbol_overload_list_block (func_name, b); |
b6429628 DC |
1427 | } |
1428 | ||
11309657 | 1429 | ALL_PRIMARY_SYMTABS (objfile, s) |
b6429628 DC |
1430 | { |
1431 | QUIT; | |
1432 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
1433 | /* Don't do this block twice. */ | |
1434 | if (b == surrounding_static_block) | |
1435 | continue; | |
245040d7 | 1436 | make_symbol_overload_list_block (func_name, b); |
b6429628 | 1437 | } |
8d577d32 DC |
1438 | } |
1439 | ||
aff410f1 | 1440 | /* Lookup the rtti type for a class name. */ |
362ff856 MC |
1441 | |
1442 | struct type * | |
1443 | cp_lookup_rtti_type (const char *name, struct block *block) | |
1444 | { | |
1445 | struct symbol * rtti_sym; | |
1446 | struct type * rtti_type; | |
1447 | ||
2570f2b7 | 1448 | rtti_sym = lookup_symbol (name, block, STRUCT_DOMAIN, NULL); |
362ff856 MC |
1449 | |
1450 | if (rtti_sym == NULL) | |
1451 | { | |
8a3fe4f8 | 1452 | warning (_("RTTI symbol not found for class '%s'"), name); |
362ff856 MC |
1453 | return NULL; |
1454 | } | |
1455 | ||
1456 | if (SYMBOL_CLASS (rtti_sym) != LOC_TYPEDEF) | |
1457 | { | |
8a3fe4f8 | 1458 | warning (_("RTTI symbol for class '%s' is not a type"), name); |
362ff856 MC |
1459 | return NULL; |
1460 | } | |
1461 | ||
1462 | rtti_type = SYMBOL_TYPE (rtti_sym); | |
1463 | ||
1464 | switch (TYPE_CODE (rtti_type)) | |
1465 | { | |
1466 | case TYPE_CODE_CLASS: | |
1467 | break; | |
1468 | case TYPE_CODE_NAMESPACE: | |
1469 | /* chastain/2003-11-26: the symbol tables often contain fake | |
1470 | symbols for namespaces with the same name as the struct. | |
1471 | This warning is an indication of a bug in the lookup order | |
1472 | or a bug in the way that the symbol tables are populated. */ | |
8a3fe4f8 | 1473 | warning (_("RTTI symbol for class '%s' is a namespace"), name); |
362ff856 MC |
1474 | return NULL; |
1475 | default: | |
8a3fe4f8 | 1476 | warning (_("RTTI symbol for class '%s' has bad type"), name); |
362ff856 MC |
1477 | return NULL; |
1478 | } | |
1479 | ||
1480 | return rtti_type; | |
1481 | } | |
b6429628 | 1482 | |
992c7d70 GB |
1483 | #ifdef HAVE_WORKING_FORK |
1484 | ||
1485 | /* If nonzero, attempt to catch crashes in the demangler and print | |
1486 | useful debugging information. */ | |
1487 | ||
1488 | static int catch_demangler_crashes = 1; | |
1489 | ||
992c7d70 GB |
1490 | /* Stack context and environment for demangler crash recovery. */ |
1491 | ||
1492 | static SIGJMP_BUF gdb_demangle_jmp_buf; | |
1493 | ||
1494 | /* If nonzero, attempt to dump core from the signal handler. */ | |
1495 | ||
1496 | static int gdb_demangle_attempt_core_dump = 1; | |
1497 | ||
1498 | /* Signal handler for gdb_demangle. */ | |
1499 | ||
1500 | static void | |
1501 | gdb_demangle_signal_handler (int signo) | |
1502 | { | |
1503 | if (gdb_demangle_attempt_core_dump) | |
1504 | { | |
1505 | if (fork () == 0) | |
1506 | dump_core (); | |
1507 | ||
1508 | gdb_demangle_attempt_core_dump = 0; | |
1509 | } | |
1510 | ||
1511 | SIGLONGJMP (gdb_demangle_jmp_buf, signo); | |
1512 | } | |
1513 | ||
1514 | #endif | |
1515 | ||
8de20a37 TT |
1516 | /* A wrapper for bfd_demangle. */ |
1517 | ||
1518 | char * | |
1519 | gdb_demangle (const char *name, int options) | |
1520 | { | |
992c7d70 GB |
1521 | char *result = NULL; |
1522 | int crash_signal = 0; | |
1523 | ||
1524 | #ifdef HAVE_WORKING_FORK | |
1525 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
1526 | struct sigaction sa, old_sa; | |
1527 | #else | |
1528 | void (*ofunc) (); | |
1529 | #endif | |
1530 | static int core_dump_allowed = -1; | |
1531 | ||
1532 | if (core_dump_allowed == -1) | |
1533 | { | |
1534 | core_dump_allowed = can_dump_core (LIMIT_CUR); | |
1535 | ||
1536 | if (!core_dump_allowed) | |
1537 | gdb_demangle_attempt_core_dump = 0; | |
1538 | } | |
1539 | ||
1540 | if (catch_demangler_crashes) | |
1541 | { | |
1542 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
1543 | sa.sa_handler = gdb_demangle_signal_handler; | |
1544 | sigemptyset (&sa.sa_mask); | |
91b52240 | 1545 | #ifdef HAVE_SIGALTSTACK |
992c7d70 | 1546 | sa.sa_flags = SA_ONSTACK; |
91b52240 GB |
1547 | #else |
1548 | sa.sa_flags = 0; | |
1549 | #endif | |
992c7d70 GB |
1550 | sigaction (SIGSEGV, &sa, &old_sa); |
1551 | #else | |
1552 | ofunc = (void (*)()) signal (SIGSEGV, gdb_demangle_signal_handler); | |
1553 | #endif | |
1554 | ||
1555 | crash_signal = SIGSETJMP (gdb_demangle_jmp_buf); | |
1556 | } | |
1557 | #endif | |
1558 | ||
1559 | if (crash_signal == 0) | |
1560 | result = bfd_demangle (NULL, name, options); | |
1561 | ||
1562 | #ifdef HAVE_WORKING_FORK | |
1563 | if (catch_demangler_crashes) | |
1564 | { | |
1565 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) | |
1566 | sigaction (SIGSEGV, &old_sa, NULL); | |
1567 | #else | |
1568 | signal (SIGSEGV, ofunc); | |
1569 | #endif | |
1570 | ||
1571 | if (crash_signal != 0) | |
1572 | { | |
1573 | static int error_reported = 0; | |
1574 | ||
1575 | if (!error_reported) | |
1576 | { | |
1577 | char *short_msg, *long_msg; | |
1578 | struct cleanup *back_to; | |
1579 | ||
1580 | short_msg = xstrprintf (_("unable to demangle '%s' " | |
1581 | "(demangler failed with signal %d)"), | |
1582 | name, crash_signal); | |
1583 | back_to = make_cleanup (xfree, short_msg); | |
1584 | ||
1585 | long_msg = xstrprintf ("%s:%d: %s: %s", __FILE__, __LINE__, | |
1586 | "demangler-warning", short_msg); | |
1587 | make_cleanup (xfree, long_msg); | |
1588 | ||
1589 | target_terminal_ours (); | |
1590 | begin_line (); | |
1591 | if (core_dump_allowed) | |
1592 | fprintf_unfiltered (gdb_stderr, | |
1593 | _("%s\nAttempting to dump core.\n"), | |
1594 | long_msg); | |
1595 | else | |
1596 | warn_cant_dump_core (long_msg); | |
1597 | ||
1598 | demangler_warning (__FILE__, __LINE__, "%s", short_msg); | |
1599 | ||
1600 | do_cleanups (back_to); | |
1601 | ||
1602 | error_reported = 1; | |
1603 | } | |
1604 | ||
1605 | result = NULL; | |
1606 | } | |
1607 | } | |
1608 | #endif | |
1609 | ||
1610 | return result; | |
8de20a37 TT |
1611 | } |
1612 | ||
9219021c DC |
1613 | /* Don't allow just "maintenance cplus". */ |
1614 | ||
1615 | static void | |
1616 | maint_cplus_command (char *arg, int from_tty) | |
1617 | { | |
3e43a32a MS |
1618 | printf_unfiltered (_("\"maintenance cplus\" must be followed " |
1619 | "by the name of a command.\n")); | |
aff410f1 MS |
1620 | help_list (maint_cplus_cmd_list, |
1621 | "maintenance cplus ", | |
635c7e8a | 1622 | all_commands, gdb_stdout); |
9219021c DC |
1623 | } |
1624 | ||
1625 | /* This is a front end for cp_find_first_component, for unit testing. | |
1626 | Be careful when using it: see the NOTE above | |
1627 | cp_find_first_component. */ | |
1628 | ||
1629 | static void | |
1630 | first_component_command (char *arg, int from_tty) | |
1631 | { | |
c836824f AR |
1632 | int len; |
1633 | char *prefix; | |
1634 | ||
1635 | if (!arg) | |
1636 | return; | |
1637 | ||
1638 | len = cp_find_first_component (arg); | |
1639 | prefix = alloca (len + 1); | |
9219021c DC |
1640 | |
1641 | memcpy (prefix, arg, len); | |
1642 | prefix[len] = '\0'; | |
1643 | ||
1644 | printf_unfiltered ("%s\n", prefix); | |
1645 | } | |
1646 | ||
b9362cc7 AC |
1647 | extern initialize_file_ftype _initialize_cp_support; /* -Wmissing-prototypes */ |
1648 | ||
12907978 | 1649 | |
57651221 | 1650 | /* Implement "info vtbl". */ |
c4aeac85 TT |
1651 | |
1652 | static void | |
1653 | info_vtbl_command (char *arg, int from_tty) | |
1654 | { | |
1655 | struct value *value; | |
1656 | ||
1657 | value = parse_and_eval (arg); | |
1658 | cplus_print_vtable (value); | |
1659 | } | |
1660 | ||
9219021c DC |
1661 | void |
1662 | _initialize_cp_support (void) | |
1663 | { | |
aff410f1 MS |
1664 | add_prefix_cmd ("cplus", class_maintenance, |
1665 | maint_cplus_command, | |
1666 | _("C++ maintenance commands."), | |
1667 | &maint_cplus_cmd_list, | |
1668 | "maintenance cplus ", | |
1669 | 0, &maintenancelist); | |
1670 | add_alias_cmd ("cp", "cplus", | |
1671 | class_maintenance, 1, | |
1672 | &maintenancelist); | |
1673 | ||
1674 | add_cmd ("first_component", | |
1675 | class_maintenance, | |
1676 | first_component_command, | |
1a966eab | 1677 | _("Print the first class/namespace component of NAME."), |
9219021c | 1678 | &maint_cplus_cmd_list); |
c4aeac85 TT |
1679 | |
1680 | add_info ("vtbl", info_vtbl_command, | |
57651221 | 1681 | _("Show the virtual function table for a C++ object.\n\ |
c4aeac85 TT |
1682 | Usage: info vtbl EXPRESSION\n\ |
1683 | Evaluate EXPRESSION and display the virtual function table for the\n\ | |
1684 | resulting object.")); | |
992c7d70 GB |
1685 | |
1686 | #ifdef HAVE_WORKING_FORK | |
1687 | add_setshow_boolean_cmd ("catch-demangler-crashes", class_maintenance, | |
1688 | &catch_demangler_crashes, _("\ | |
1689 | Set whether to attempt to catch demangler crashes."), _("\ | |
1690 | Show whether to attempt to catch demangler crashes."), _("\ | |
1691 | If enabled GDB will attempt to catch demangler crashes and\n\ | |
1692 | display the offending symbol."), | |
1693 | NULL, | |
1694 | NULL, | |
1695 | &maintenance_set_cmdlist, | |
1696 | &maintenance_show_cmdlist); | |
1697 | #endif | |
9219021c | 1698 | } |