| 1 | /* Helper routines for C++ support in GDB. |
| 2 | Copyright (C) 2002-2019 Free Software Foundation, Inc. |
| 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 |
| 10 | the Free Software Foundation; either version 3 of the License, or |
| 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 |
| 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 20 | |
| 21 | #include "defs.h" |
| 22 | #include "cp-support.h" |
| 23 | #include "demangle.h" |
| 24 | #include "gdbcmd.h" |
| 25 | #include "dictionary.h" |
| 26 | #include "objfiles.h" |
| 27 | #include "frame.h" |
| 28 | #include "symtab.h" |
| 29 | #include "block.h" |
| 30 | #include "complaints.h" |
| 31 | #include "gdbtypes.h" |
| 32 | #include "expression.h" |
| 33 | #include "value.h" |
| 34 | #include "cp-abi.h" |
| 35 | #include "namespace.h" |
| 36 | #include <signal.h> |
| 37 | #include "common/gdb_setjmp.h" |
| 38 | #include "safe-ctype.h" |
| 39 | #include "common/selftest.h" |
| 40 | |
| 41 | #define d_left(dc) (dc)->u.s_binary.left |
| 42 | #define d_right(dc) (dc)->u.s_binary.right |
| 43 | |
| 44 | /* Functions related to demangled name parsing. */ |
| 45 | |
| 46 | static unsigned int cp_find_first_component_aux (const char *name, |
| 47 | int permissive); |
| 48 | |
| 49 | static void demangled_name_complaint (const char *name); |
| 50 | |
| 51 | /* Functions related to overload resolution. */ |
| 52 | |
| 53 | static void overload_list_add_symbol (struct symbol *sym, |
| 54 | const char *oload_name, |
| 55 | std::vector<symbol *> *overload_list); |
| 56 | |
| 57 | static void add_symbol_overload_list_using |
| 58 | (const char *func_name, const char *the_namespace, |
| 59 | std::vector<symbol *> *overload_list); |
| 60 | |
| 61 | static void add_symbol_overload_list_qualified |
| 62 | (const char *func_name, |
| 63 | std::vector<symbol *> *overload_list); |
| 64 | |
| 65 | /* The list of "maint cplus" commands. */ |
| 66 | |
| 67 | struct cmd_list_element *maint_cplus_cmd_list = NULL; |
| 68 | |
| 69 | /* A list of typedefs which should not be substituted by replace_typedefs. */ |
| 70 | static const char * const ignore_typedefs[] = |
| 71 | { |
| 72 | "std::istream", "std::iostream", "std::ostream", "std::string" |
| 73 | }; |
| 74 | |
| 75 | static void |
| 76 | replace_typedefs (struct demangle_parse_info *info, |
| 77 | struct demangle_component *ret_comp, |
| 78 | canonicalization_ftype *finder, |
| 79 | void *data); |
| 80 | |
| 81 | /* A convenience function to copy STRING into OBSTACK, returning a pointer |
| 82 | to the newly allocated string and saving the number of bytes saved in LEN. |
| 83 | |
| 84 | It does not copy the terminating '\0' byte! */ |
| 85 | |
| 86 | static char * |
| 87 | copy_string_to_obstack (struct obstack *obstack, const char *string, |
| 88 | long *len) |
| 89 | { |
| 90 | *len = strlen (string); |
| 91 | return (char *) obstack_copy (obstack, string, *len); |
| 92 | } |
| 93 | |
| 94 | /* Return 1 if STRING is clearly already in canonical form. This |
| 95 | function is conservative; things which it does not recognize are |
| 96 | assumed to be non-canonical, and the parser will sort them out |
| 97 | afterwards. This speeds up the critical path for alphanumeric |
| 98 | identifiers. */ |
| 99 | |
| 100 | static int |
| 101 | cp_already_canonical (const char *string) |
| 102 | { |
| 103 | /* Identifier start character [a-zA-Z_]. */ |
| 104 | if (!ISIDST (string[0])) |
| 105 | return 0; |
| 106 | |
| 107 | /* These are the only two identifiers which canonicalize to other |
| 108 | than themselves or an error: unsigned -> unsigned int and |
| 109 | signed -> int. */ |
| 110 | if (string[0] == 'u' && strcmp (&string[1], "nsigned") == 0) |
| 111 | return 0; |
| 112 | else if (string[0] == 's' && strcmp (&string[1], "igned") == 0) |
| 113 | return 0; |
| 114 | |
| 115 | /* Identifier character [a-zA-Z0-9_]. */ |
| 116 | while (ISIDNUM (string[1])) |
| 117 | string++; |
| 118 | |
| 119 | if (string[1] == '\0') |
| 120 | return 1; |
| 121 | else |
| 122 | return 0; |
| 123 | } |
| 124 | |
| 125 | /* Inspect the given RET_COMP for its type. If it is a typedef, |
| 126 | replace the node with the typedef's tree. |
| 127 | |
| 128 | Returns 1 if any typedef substitutions were made, 0 otherwise. */ |
| 129 | |
| 130 | static int |
| 131 | inspect_type (struct demangle_parse_info *info, |
| 132 | struct demangle_component *ret_comp, |
| 133 | canonicalization_ftype *finder, |
| 134 | void *data) |
| 135 | { |
| 136 | char *name; |
| 137 | struct symbol *sym; |
| 138 | |
| 139 | /* Copy the symbol's name from RET_COMP and look it up |
| 140 | in the symbol table. */ |
| 141 | name = (char *) alloca (ret_comp->u.s_name.len + 1); |
| 142 | memcpy (name, ret_comp->u.s_name.s, ret_comp->u.s_name.len); |
| 143 | name[ret_comp->u.s_name.len] = '\0'; |
| 144 | |
| 145 | /* Ignore any typedefs that should not be substituted. */ |
| 146 | for (int i = 0; i < ARRAY_SIZE (ignore_typedefs); ++i) |
| 147 | { |
| 148 | if (strcmp (name, ignore_typedefs[i]) == 0) |
| 149 | return 0; |
| 150 | } |
| 151 | |
| 152 | sym = NULL; |
| 153 | |
| 154 | try |
| 155 | { |
| 156 | sym = lookup_symbol (name, 0, VAR_DOMAIN, 0).symbol; |
| 157 | } |
| 158 | catch (const gdb_exception &except) |
| 159 | { |
| 160 | return 0; |
| 161 | } |
| 162 | |
| 163 | if (sym != NULL) |
| 164 | { |
| 165 | struct type *otype = SYMBOL_TYPE (sym); |
| 166 | |
| 167 | if (finder != NULL) |
| 168 | { |
| 169 | const char *new_name = (*finder) (otype, data); |
| 170 | |
| 171 | if (new_name != NULL) |
| 172 | { |
| 173 | ret_comp->u.s_name.s = new_name; |
| 174 | ret_comp->u.s_name.len = strlen (new_name); |
| 175 | return 1; |
| 176 | } |
| 177 | |
| 178 | return 0; |
| 179 | } |
| 180 | |
| 181 | /* If the type is a typedef or namespace alias, replace it. */ |
| 182 | if (TYPE_CODE (otype) == TYPE_CODE_TYPEDEF |
| 183 | || TYPE_CODE (otype) == TYPE_CODE_NAMESPACE) |
| 184 | { |
| 185 | long len; |
| 186 | int is_anon; |
| 187 | struct type *type; |
| 188 | std::unique_ptr<demangle_parse_info> i; |
| 189 | |
| 190 | /* Get the real type of the typedef. */ |
| 191 | type = check_typedef (otype); |
| 192 | |
| 193 | /* If the symbol name is the same as the original type name, |
| 194 | don't substitute. That would cause infinite recursion in |
| 195 | symbol lookups, as the typedef symbol is often the first |
| 196 | found symbol in the symbol table. |
| 197 | |
| 198 | However, this can happen in a number of situations, such as: |
| 199 | |
| 200 | If the symbol is a namespace and its type name is no different |
| 201 | than the name we looked up, this symbol is not a namespace |
| 202 | alias and does not need to be substituted. |
| 203 | |
| 204 | If the symbol is typedef and its type name is the same |
| 205 | as the symbol's name, e.g., "typedef struct foo foo;". */ |
| 206 | if (TYPE_NAME (type) != nullptr |
| 207 | && strcmp (TYPE_NAME (type), name) == 0) |
| 208 | return 0; |
| 209 | |
| 210 | is_anon = (TYPE_NAME (type) == NULL |
| 211 | && (TYPE_CODE (type) == TYPE_CODE_ENUM |
| 212 | || TYPE_CODE (type) == TYPE_CODE_STRUCT |
| 213 | || TYPE_CODE (type) == TYPE_CODE_UNION)); |
| 214 | if (is_anon) |
| 215 | { |
| 216 | struct type *last = otype; |
| 217 | |
| 218 | /* Find the last typedef for the type. */ |
| 219 | while (TYPE_TARGET_TYPE (last) != NULL |
| 220 | && (TYPE_CODE (TYPE_TARGET_TYPE (last)) |
| 221 | == TYPE_CODE_TYPEDEF)) |
| 222 | last = TYPE_TARGET_TYPE (last); |
| 223 | |
| 224 | /* If there is only one typedef for this anonymous type, |
| 225 | do not substitute it. */ |
| 226 | if (type == otype) |
| 227 | return 0; |
| 228 | else |
| 229 | /* Use the last typedef seen as the type for this |
| 230 | anonymous type. */ |
| 231 | type = last; |
| 232 | } |
| 233 | |
| 234 | string_file buf; |
| 235 | try |
| 236 | { |
| 237 | type_print (type, "", &buf, -1); |
| 238 | } |
| 239 | /* If type_print threw an exception, there is little point |
| 240 | in continuing, so just bow out gracefully. */ |
| 241 | catch (const gdb_exception_error &except) |
| 242 | { |
| 243 | return 0; |
| 244 | } |
| 245 | |
| 246 | len = buf.size (); |
| 247 | name = (char *) obstack_copy0 (&info->obstack, buf.c_str (), len); |
| 248 | |
| 249 | /* Turn the result into a new tree. Note that this |
| 250 | tree will contain pointers into NAME, so NAME cannot |
| 251 | be free'd until all typedef conversion is done and |
| 252 | the final result is converted into a string. */ |
| 253 | i = cp_demangled_name_to_comp (name, NULL); |
| 254 | if (i != NULL) |
| 255 | { |
| 256 | /* Merge the two trees. */ |
| 257 | cp_merge_demangle_parse_infos (info, ret_comp, i.get ()); |
| 258 | |
| 259 | /* Replace any newly introduced typedefs -- but not |
| 260 | if the type is anonymous (that would lead to infinite |
| 261 | looping). */ |
| 262 | if (!is_anon) |
| 263 | replace_typedefs (info, ret_comp, finder, data); |
| 264 | } |
| 265 | else |
| 266 | { |
| 267 | /* This shouldn't happen unless the type printer has |
| 268 | output something that the name parser cannot grok. |
| 269 | Nonetheless, an ounce of prevention... |
| 270 | |
| 271 | Canonicalize the name again, and store it in the |
| 272 | current node (RET_COMP). */ |
| 273 | std::string canon = cp_canonicalize_string_no_typedefs (name); |
| 274 | |
| 275 | if (!canon.empty ()) |
| 276 | { |
| 277 | /* Copy the canonicalization into the obstack. */ |
| 278 | name = copy_string_to_obstack (&info->obstack, canon.c_str (), &len); |
| 279 | } |
| 280 | |
| 281 | ret_comp->u.s_name.s = name; |
| 282 | ret_comp->u.s_name.len = len; |
| 283 | } |
| 284 | |
| 285 | return 1; |
| 286 | } |
| 287 | } |
| 288 | |
| 289 | return 0; |
| 290 | } |
| 291 | |
| 292 | /* Replace any typedefs appearing in the qualified name |
| 293 | (DEMANGLE_COMPONENT_QUAL_NAME) represented in RET_COMP for the name parse |
| 294 | given in INFO. */ |
| 295 | |
| 296 | static void |
| 297 | replace_typedefs_qualified_name (struct demangle_parse_info *info, |
| 298 | struct demangle_component *ret_comp, |
| 299 | canonicalization_ftype *finder, |
| 300 | void *data) |
| 301 | { |
| 302 | string_file buf; |
| 303 | struct demangle_component *comp = ret_comp; |
| 304 | |
| 305 | /* Walk each node of the qualified name, reconstructing the name of |
| 306 | this element. With every node, check for any typedef substitutions. |
| 307 | If a substitution has occurred, replace the qualified name node |
| 308 | with a DEMANGLE_COMPONENT_NAME node representing the new, typedef- |
| 309 | substituted name. */ |
| 310 | while (comp->type == DEMANGLE_COMPONENT_QUAL_NAME) |
| 311 | { |
| 312 | if (d_left (comp)->type == DEMANGLE_COMPONENT_NAME) |
| 313 | { |
| 314 | struct demangle_component newobj; |
| 315 | |
| 316 | buf.write (d_left (comp)->u.s_name.s, d_left (comp)->u.s_name.len); |
| 317 | newobj.type = DEMANGLE_COMPONENT_NAME; |
| 318 | newobj.u.s_name.s |
| 319 | = (char *) obstack_copy0 (&info->obstack, |
| 320 | buf.c_str (), buf.size ()); |
| 321 | newobj.u.s_name.len = buf.size (); |
| 322 | if (inspect_type (info, &newobj, finder, data)) |
| 323 | { |
| 324 | char *s; |
| 325 | long slen; |
| 326 | |
| 327 | /* A typedef was substituted in NEW. Convert it to a |
| 328 | string and replace the top DEMANGLE_COMPONENT_QUAL_NAME |
| 329 | node. */ |
| 330 | |
| 331 | buf.clear (); |
| 332 | gdb::unique_xmalloc_ptr<char> n |
| 333 | = cp_comp_to_string (&newobj, 100); |
| 334 | if (n == NULL) |
| 335 | { |
| 336 | /* If something went astray, abort typedef substitutions. */ |
| 337 | return; |
| 338 | } |
| 339 | |
| 340 | s = copy_string_to_obstack (&info->obstack, n.get (), &slen); |
| 341 | |
| 342 | d_left (ret_comp)->type = DEMANGLE_COMPONENT_NAME; |
| 343 | d_left (ret_comp)->u.s_name.s = s; |
| 344 | d_left (ret_comp)->u.s_name.len = slen; |
| 345 | d_right (ret_comp) = d_right (comp); |
| 346 | comp = ret_comp; |
| 347 | continue; |
| 348 | } |
| 349 | } |
| 350 | else |
| 351 | { |
| 352 | /* The current node is not a name, so simply replace any |
| 353 | typedefs in it. Then print it to the stream to continue |
| 354 | checking for more typedefs in the tree. */ |
| 355 | replace_typedefs (info, d_left (comp), finder, data); |
| 356 | gdb::unique_xmalloc_ptr<char> name |
| 357 | = cp_comp_to_string (d_left (comp), 100); |
| 358 | if (name == NULL) |
| 359 | { |
| 360 | /* If something went astray, abort typedef substitutions. */ |
| 361 | return; |
| 362 | } |
| 363 | buf.puts (name.get ()); |
| 364 | } |
| 365 | |
| 366 | buf.write ("::", 2); |
| 367 | comp = d_right (comp); |
| 368 | } |
| 369 | |
| 370 | /* If the next component is DEMANGLE_COMPONENT_NAME, save the qualified |
| 371 | name assembled above and append the name given by COMP. Then use this |
| 372 | reassembled name to check for a typedef. */ |
| 373 | |
| 374 | if (comp->type == DEMANGLE_COMPONENT_NAME) |
| 375 | { |
| 376 | buf.write (comp->u.s_name.s, comp->u.s_name.len); |
| 377 | |
| 378 | /* Replace the top (DEMANGLE_COMPONENT_QUAL_NAME) node |
| 379 | with a DEMANGLE_COMPONENT_NAME node containing the whole |
| 380 | name. */ |
| 381 | ret_comp->type = DEMANGLE_COMPONENT_NAME; |
| 382 | ret_comp->u.s_name.s |
| 383 | = (char *) obstack_copy0 (&info->obstack, |
| 384 | buf.c_str (), buf.size ()); |
| 385 | ret_comp->u.s_name.len = buf.size (); |
| 386 | inspect_type (info, ret_comp, finder, data); |
| 387 | } |
| 388 | else |
| 389 | replace_typedefs (info, comp, finder, data); |
| 390 | } |
| 391 | |
| 392 | |
| 393 | /* A function to check const and volatile qualifiers for argument types. |
| 394 | |
| 395 | "Parameter declarations that differ only in the presence |
| 396 | or absence of `const' and/or `volatile' are equivalent." |
| 397 | C++ Standard N3290, clause 13.1.3 #4. */ |
| 398 | |
| 399 | static void |
| 400 | check_cv_qualifiers (struct demangle_component *ret_comp) |
| 401 | { |
| 402 | while (d_left (ret_comp) != NULL |
| 403 | && (d_left (ret_comp)->type == DEMANGLE_COMPONENT_CONST |
| 404 | || d_left (ret_comp)->type == DEMANGLE_COMPONENT_VOLATILE)) |
| 405 | { |
| 406 | d_left (ret_comp) = d_left (d_left (ret_comp)); |
| 407 | } |
| 408 | } |
| 409 | |
| 410 | /* Walk the parse tree given by RET_COMP, replacing any typedefs with |
| 411 | their basic types. */ |
| 412 | |
| 413 | static void |
| 414 | replace_typedefs (struct demangle_parse_info *info, |
| 415 | struct demangle_component *ret_comp, |
| 416 | canonicalization_ftype *finder, |
| 417 | void *data) |
| 418 | { |
| 419 | if (ret_comp) |
| 420 | { |
| 421 | if (finder != NULL |
| 422 | && (ret_comp->type == DEMANGLE_COMPONENT_NAME |
| 423 | || ret_comp->type == DEMANGLE_COMPONENT_QUAL_NAME |
| 424 | || ret_comp->type == DEMANGLE_COMPONENT_TEMPLATE |
| 425 | || ret_comp->type == DEMANGLE_COMPONENT_BUILTIN_TYPE)) |
| 426 | { |
| 427 | gdb::unique_xmalloc_ptr<char> local_name |
| 428 | = cp_comp_to_string (ret_comp, 10); |
| 429 | |
| 430 | if (local_name != NULL) |
| 431 | { |
| 432 | struct symbol *sym = NULL; |
| 433 | |
| 434 | sym = NULL; |
| 435 | try |
| 436 | { |
| 437 | sym = lookup_symbol (local_name.get (), 0, |
| 438 | VAR_DOMAIN, 0).symbol; |
| 439 | } |
| 440 | catch (const gdb_exception &except) |
| 441 | { |
| 442 | } |
| 443 | |
| 444 | if (sym != NULL) |
| 445 | { |
| 446 | struct type *otype = SYMBOL_TYPE (sym); |
| 447 | const char *new_name = (*finder) (otype, data); |
| 448 | |
| 449 | if (new_name != NULL) |
| 450 | { |
| 451 | ret_comp->type = DEMANGLE_COMPONENT_NAME; |
| 452 | ret_comp->u.s_name.s = new_name; |
| 453 | ret_comp->u.s_name.len = strlen (new_name); |
| 454 | return; |
| 455 | } |
| 456 | } |
| 457 | } |
| 458 | } |
| 459 | |
| 460 | switch (ret_comp->type) |
| 461 | { |
| 462 | case DEMANGLE_COMPONENT_ARGLIST: |
| 463 | check_cv_qualifiers (ret_comp); |
| 464 | /* Fall through */ |
| 465 | |
| 466 | case DEMANGLE_COMPONENT_FUNCTION_TYPE: |
| 467 | case DEMANGLE_COMPONENT_TEMPLATE: |
| 468 | case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST: |
| 469 | case DEMANGLE_COMPONENT_TYPED_NAME: |
| 470 | replace_typedefs (info, d_left (ret_comp), finder, data); |
| 471 | replace_typedefs (info, d_right (ret_comp), finder, data); |
| 472 | break; |
| 473 | |
| 474 | case DEMANGLE_COMPONENT_NAME: |
| 475 | inspect_type (info, ret_comp, finder, data); |
| 476 | break; |
| 477 | |
| 478 | case DEMANGLE_COMPONENT_QUAL_NAME: |
| 479 | replace_typedefs_qualified_name (info, ret_comp, finder, data); |
| 480 | break; |
| 481 | |
| 482 | case DEMANGLE_COMPONENT_LOCAL_NAME: |
| 483 | case DEMANGLE_COMPONENT_CTOR: |
| 484 | case DEMANGLE_COMPONENT_ARRAY_TYPE: |
| 485 | case DEMANGLE_COMPONENT_PTRMEM_TYPE: |
| 486 | replace_typedefs (info, d_right (ret_comp), finder, data); |
| 487 | break; |
| 488 | |
| 489 | case DEMANGLE_COMPONENT_CONST: |
| 490 | case DEMANGLE_COMPONENT_RESTRICT: |
| 491 | case DEMANGLE_COMPONENT_VOLATILE: |
| 492 | case DEMANGLE_COMPONENT_VOLATILE_THIS: |
| 493 | case DEMANGLE_COMPONENT_CONST_THIS: |
| 494 | case DEMANGLE_COMPONENT_RESTRICT_THIS: |
| 495 | case DEMANGLE_COMPONENT_POINTER: |
| 496 | case DEMANGLE_COMPONENT_REFERENCE: |
| 497 | case DEMANGLE_COMPONENT_RVALUE_REFERENCE: |
| 498 | replace_typedefs (info, d_left (ret_comp), finder, data); |
| 499 | break; |
| 500 | |
| 501 | default: |
| 502 | break; |
| 503 | } |
| 504 | } |
| 505 | } |
| 506 | |
| 507 | /* Parse STRING and convert it to canonical form, resolving any |
| 508 | typedefs. If parsing fails, or if STRING is already canonical, |
| 509 | return the empty string. Otherwise return the canonical form. If |
| 510 | FINDER is not NULL, then type components are passed to FINDER to be |
| 511 | looked up. DATA is passed verbatim to FINDER. */ |
| 512 | |
| 513 | std::string |
| 514 | cp_canonicalize_string_full (const char *string, |
| 515 | canonicalization_ftype *finder, |
| 516 | void *data) |
| 517 | { |
| 518 | std::string ret; |
| 519 | unsigned int estimated_len; |
| 520 | std::unique_ptr<demangle_parse_info> info; |
| 521 | |
| 522 | estimated_len = strlen (string) * 2; |
| 523 | info = cp_demangled_name_to_comp (string, NULL); |
| 524 | if (info != NULL) |
| 525 | { |
| 526 | /* Replace all the typedefs in the tree. */ |
| 527 | replace_typedefs (info.get (), info->tree, finder, data); |
| 528 | |
| 529 | /* Convert the tree back into a string. */ |
| 530 | gdb::unique_xmalloc_ptr<char> us = cp_comp_to_string (info->tree, |
| 531 | estimated_len); |
| 532 | gdb_assert (us); |
| 533 | |
| 534 | ret = us.get (); |
| 535 | /* Finally, compare the original string with the computed |
| 536 | name, returning NULL if they are the same. */ |
| 537 | if (ret == string) |
| 538 | return std::string (); |
| 539 | } |
| 540 | |
| 541 | return ret; |
| 542 | } |
| 543 | |
| 544 | /* Like cp_canonicalize_string_full, but always passes NULL for |
| 545 | FINDER. */ |
| 546 | |
| 547 | std::string |
| 548 | cp_canonicalize_string_no_typedefs (const char *string) |
| 549 | { |
| 550 | return cp_canonicalize_string_full (string, NULL, NULL); |
| 551 | } |
| 552 | |
| 553 | /* Parse STRING and convert it to canonical form. If parsing fails, |
| 554 | or if STRING is already canonical, return the empty string. |
| 555 | Otherwise return the canonical form. */ |
| 556 | |
| 557 | std::string |
| 558 | cp_canonicalize_string (const char *string) |
| 559 | { |
| 560 | std::unique_ptr<demangle_parse_info> info; |
| 561 | unsigned int estimated_len; |
| 562 | |
| 563 | if (cp_already_canonical (string)) |
| 564 | return std::string (); |
| 565 | |
| 566 | info = cp_demangled_name_to_comp (string, NULL); |
| 567 | if (info == NULL) |
| 568 | return std::string (); |
| 569 | |
| 570 | estimated_len = strlen (string) * 2; |
| 571 | gdb::unique_xmalloc_ptr<char> us (cp_comp_to_string (info->tree, |
| 572 | estimated_len)); |
| 573 | |
| 574 | if (!us) |
| 575 | { |
| 576 | warning (_("internal error: string \"%s\" failed to be canonicalized"), |
| 577 | string); |
| 578 | return std::string (); |
| 579 | } |
| 580 | |
| 581 | std::string ret (us.get ()); |
| 582 | |
| 583 | if (ret == string) |
| 584 | return std::string (); |
| 585 | |
| 586 | return ret; |
| 587 | } |
| 588 | |
| 589 | /* Convert a mangled name to a demangle_component tree. *MEMORY is |
| 590 | set to the block of used memory that should be freed when finished |
| 591 | with the tree. DEMANGLED_P is set to the char * that should be |
| 592 | freed when finished with the tree, or NULL if none was needed. |
| 593 | OPTIONS will be passed to the demangler. */ |
| 594 | |
| 595 | static std::unique_ptr<demangle_parse_info> |
| 596 | mangled_name_to_comp (const char *mangled_name, int options, |
| 597 | void **memory, char **demangled_p) |
| 598 | { |
| 599 | char *demangled_name; |
| 600 | |
| 601 | /* If it looks like a v3 mangled name, then try to go directly |
| 602 | to trees. */ |
| 603 | if (mangled_name[0] == '_' && mangled_name[1] == 'Z') |
| 604 | { |
| 605 | struct demangle_component *ret; |
| 606 | |
| 607 | ret = cplus_demangle_v3_components (mangled_name, |
| 608 | options, memory); |
| 609 | if (ret) |
| 610 | { |
| 611 | std::unique_ptr<demangle_parse_info> info (new demangle_parse_info); |
| 612 | info->tree = ret; |
| 613 | *demangled_p = NULL; |
| 614 | return info; |
| 615 | } |
| 616 | } |
| 617 | |
| 618 | /* If it doesn't, or if that failed, then try to demangle the |
| 619 | name. */ |
| 620 | demangled_name = gdb_demangle (mangled_name, options); |
| 621 | if (demangled_name == NULL) |
| 622 | return NULL; |
| 623 | |
| 624 | /* If we could demangle the name, parse it to build the component |
| 625 | tree. */ |
| 626 | std::unique_ptr<demangle_parse_info> info |
| 627 | = cp_demangled_name_to_comp (demangled_name, NULL); |
| 628 | |
| 629 | if (info == NULL) |
| 630 | { |
| 631 | xfree (demangled_name); |
| 632 | return NULL; |
| 633 | } |
| 634 | |
| 635 | *demangled_p = demangled_name; |
| 636 | return info; |
| 637 | } |
| 638 | |
| 639 | /* Return the name of the class containing method PHYSNAME. */ |
| 640 | |
| 641 | char * |
| 642 | cp_class_name_from_physname (const char *physname) |
| 643 | { |
| 644 | void *storage = NULL; |
| 645 | char *demangled_name = NULL; |
| 646 | gdb::unique_xmalloc_ptr<char> ret; |
| 647 | struct demangle_component *ret_comp, *prev_comp, *cur_comp; |
| 648 | std::unique_ptr<demangle_parse_info> info; |
| 649 | int done; |
| 650 | |
| 651 | info = mangled_name_to_comp (physname, DMGL_ANSI, |
| 652 | &storage, &demangled_name); |
| 653 | if (info == NULL) |
| 654 | return NULL; |
| 655 | |
| 656 | done = 0; |
| 657 | ret_comp = info->tree; |
| 658 | |
| 659 | /* First strip off any qualifiers, if we have a function or |
| 660 | method. */ |
| 661 | while (!done) |
| 662 | switch (ret_comp->type) |
| 663 | { |
| 664 | case DEMANGLE_COMPONENT_CONST: |
| 665 | case DEMANGLE_COMPONENT_RESTRICT: |
| 666 | case DEMANGLE_COMPONENT_VOLATILE: |
| 667 | case DEMANGLE_COMPONENT_CONST_THIS: |
| 668 | case DEMANGLE_COMPONENT_RESTRICT_THIS: |
| 669 | case DEMANGLE_COMPONENT_VOLATILE_THIS: |
| 670 | case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL: |
| 671 | ret_comp = d_left (ret_comp); |
| 672 | break; |
| 673 | default: |
| 674 | done = 1; |
| 675 | break; |
| 676 | } |
| 677 | |
| 678 | /* If what we have now is a function, discard the argument list. */ |
| 679 | if (ret_comp->type == DEMANGLE_COMPONENT_TYPED_NAME) |
| 680 | ret_comp = d_left (ret_comp); |
| 681 | |
| 682 | /* If what we have now is a template, strip off the template |
| 683 | arguments. The left subtree may be a qualified name. */ |
| 684 | if (ret_comp->type == DEMANGLE_COMPONENT_TEMPLATE) |
| 685 | ret_comp = d_left (ret_comp); |
| 686 | |
| 687 | /* What we have now should be a name, possibly qualified. |
| 688 | Additional qualifiers could live in the left subtree or the right |
| 689 | subtree. Find the last piece. */ |
| 690 | done = 0; |
| 691 | prev_comp = NULL; |
| 692 | cur_comp = ret_comp; |
| 693 | while (!done) |
| 694 | switch (cur_comp->type) |
| 695 | { |
| 696 | case DEMANGLE_COMPONENT_QUAL_NAME: |
| 697 | case DEMANGLE_COMPONENT_LOCAL_NAME: |
| 698 | prev_comp = cur_comp; |
| 699 | cur_comp = d_right (cur_comp); |
| 700 | break; |
| 701 | case DEMANGLE_COMPONENT_TEMPLATE: |
| 702 | case DEMANGLE_COMPONENT_NAME: |
| 703 | case DEMANGLE_COMPONENT_CTOR: |
| 704 | case DEMANGLE_COMPONENT_DTOR: |
| 705 | case DEMANGLE_COMPONENT_OPERATOR: |
| 706 | case DEMANGLE_COMPONENT_EXTENDED_OPERATOR: |
| 707 | done = 1; |
| 708 | break; |
| 709 | default: |
| 710 | done = 1; |
| 711 | cur_comp = NULL; |
| 712 | break; |
| 713 | } |
| 714 | |
| 715 | if (cur_comp != NULL && prev_comp != NULL) |
| 716 | { |
| 717 | /* We want to discard the rightmost child of PREV_COMP. */ |
| 718 | *prev_comp = *d_left (prev_comp); |
| 719 | /* The ten is completely arbitrary; we don't have a good |
| 720 | estimate. */ |
| 721 | ret = cp_comp_to_string (ret_comp, 10); |
| 722 | } |
| 723 | |
| 724 | xfree (storage); |
| 725 | xfree (demangled_name); |
| 726 | return ret.release (); |
| 727 | } |
| 728 | |
| 729 | /* Return the child of COMP which is the basename of a method, |
| 730 | variable, et cetera. All scope qualifiers are discarded, but |
| 731 | template arguments will be included. The component tree may be |
| 732 | modified. */ |
| 733 | |
| 734 | static struct demangle_component * |
| 735 | unqualified_name_from_comp (struct demangle_component *comp) |
| 736 | { |
| 737 | struct demangle_component *ret_comp = comp, *last_template; |
| 738 | int done; |
| 739 | |
| 740 | done = 0; |
| 741 | last_template = NULL; |
| 742 | while (!done) |
| 743 | switch (ret_comp->type) |
| 744 | { |
| 745 | case DEMANGLE_COMPONENT_QUAL_NAME: |
| 746 | case DEMANGLE_COMPONENT_LOCAL_NAME: |
| 747 | ret_comp = d_right (ret_comp); |
| 748 | break; |
| 749 | case DEMANGLE_COMPONENT_TYPED_NAME: |
| 750 | ret_comp = d_left (ret_comp); |
| 751 | break; |
| 752 | case DEMANGLE_COMPONENT_TEMPLATE: |
| 753 | gdb_assert (last_template == NULL); |
| 754 | last_template = ret_comp; |
| 755 | ret_comp = d_left (ret_comp); |
| 756 | break; |
| 757 | case DEMANGLE_COMPONENT_CONST: |
| 758 | case DEMANGLE_COMPONENT_RESTRICT: |
| 759 | case DEMANGLE_COMPONENT_VOLATILE: |
| 760 | case DEMANGLE_COMPONENT_CONST_THIS: |
| 761 | case DEMANGLE_COMPONENT_RESTRICT_THIS: |
| 762 | case DEMANGLE_COMPONENT_VOLATILE_THIS: |
| 763 | case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL: |
| 764 | ret_comp = d_left (ret_comp); |
| 765 | break; |
| 766 | case DEMANGLE_COMPONENT_NAME: |
| 767 | case DEMANGLE_COMPONENT_CTOR: |
| 768 | case DEMANGLE_COMPONENT_DTOR: |
| 769 | case DEMANGLE_COMPONENT_OPERATOR: |
| 770 | case DEMANGLE_COMPONENT_EXTENDED_OPERATOR: |
| 771 | done = 1; |
| 772 | break; |
| 773 | default: |
| 774 | return NULL; |
| 775 | break; |
| 776 | } |
| 777 | |
| 778 | if (last_template) |
| 779 | { |
| 780 | d_left (last_template) = ret_comp; |
| 781 | return last_template; |
| 782 | } |
| 783 | |
| 784 | return ret_comp; |
| 785 | } |
| 786 | |
| 787 | /* Return the name of the method whose linkage name is PHYSNAME. */ |
| 788 | |
| 789 | char * |
| 790 | method_name_from_physname (const char *physname) |
| 791 | { |
| 792 | void *storage = NULL; |
| 793 | char *demangled_name = NULL; |
| 794 | gdb::unique_xmalloc_ptr<char> ret; |
| 795 | struct demangle_component *ret_comp; |
| 796 | std::unique_ptr<demangle_parse_info> info; |
| 797 | |
| 798 | info = mangled_name_to_comp (physname, DMGL_ANSI, |
| 799 | &storage, &demangled_name); |
| 800 | if (info == NULL) |
| 801 | return NULL; |
| 802 | |
| 803 | ret_comp = unqualified_name_from_comp (info->tree); |
| 804 | |
| 805 | if (ret_comp != NULL) |
| 806 | /* The ten is completely arbitrary; we don't have a good |
| 807 | estimate. */ |
| 808 | ret = cp_comp_to_string (ret_comp, 10); |
| 809 | |
| 810 | xfree (storage); |
| 811 | xfree (demangled_name); |
| 812 | return ret.release (); |
| 813 | } |
| 814 | |
| 815 | /* If FULL_NAME is the demangled name of a C++ function (including an |
| 816 | arg list, possibly including namespace/class qualifications), |
| 817 | return a new string containing only the function name (without the |
| 818 | arg list/class qualifications). Otherwise, return NULL. */ |
| 819 | |
| 820 | gdb::unique_xmalloc_ptr<char> |
| 821 | cp_func_name (const char *full_name) |
| 822 | { |
| 823 | gdb::unique_xmalloc_ptr<char> ret; |
| 824 | struct demangle_component *ret_comp; |
| 825 | std::unique_ptr<demangle_parse_info> info; |
| 826 | |
| 827 | info = cp_demangled_name_to_comp (full_name, NULL); |
| 828 | if (!info) |
| 829 | return nullptr; |
| 830 | |
| 831 | ret_comp = unqualified_name_from_comp (info->tree); |
| 832 | |
| 833 | if (ret_comp != NULL) |
| 834 | ret = cp_comp_to_string (ret_comp, 10); |
| 835 | |
| 836 | return ret; |
| 837 | } |
| 838 | |
| 839 | /* Helper for cp_remove_params. DEMANGLED_NAME is the name of a |
| 840 | function, including parameters and (optionally) a return type. |
| 841 | Return the name of the function without parameters or return type, |
| 842 | or NULL if we can not parse the name. If REQUIRE_PARAMS is false, |
| 843 | then tolerate a non-existing or unbalanced parameter list. */ |
| 844 | |
| 845 | static gdb::unique_xmalloc_ptr<char> |
| 846 | cp_remove_params_1 (const char *demangled_name, bool require_params) |
| 847 | { |
| 848 | bool done = false; |
| 849 | struct demangle_component *ret_comp; |
| 850 | std::unique_ptr<demangle_parse_info> info; |
| 851 | gdb::unique_xmalloc_ptr<char> ret; |
| 852 | |
| 853 | if (demangled_name == NULL) |
| 854 | return NULL; |
| 855 | |
| 856 | info = cp_demangled_name_to_comp (demangled_name, NULL); |
| 857 | if (info == NULL) |
| 858 | return NULL; |
| 859 | |
| 860 | /* First strip off any qualifiers, if we have a function or method. */ |
| 861 | ret_comp = info->tree; |
| 862 | while (!done) |
| 863 | switch (ret_comp->type) |
| 864 | { |
| 865 | case DEMANGLE_COMPONENT_CONST: |
| 866 | case DEMANGLE_COMPONENT_RESTRICT: |
| 867 | case DEMANGLE_COMPONENT_VOLATILE: |
| 868 | case DEMANGLE_COMPONENT_CONST_THIS: |
| 869 | case DEMANGLE_COMPONENT_RESTRICT_THIS: |
| 870 | case DEMANGLE_COMPONENT_VOLATILE_THIS: |
| 871 | case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL: |
| 872 | ret_comp = d_left (ret_comp); |
| 873 | break; |
| 874 | default: |
| 875 | done = true; |
| 876 | break; |
| 877 | } |
| 878 | |
| 879 | /* What we have now should be a function. Return its name. */ |
| 880 | if (ret_comp->type == DEMANGLE_COMPONENT_TYPED_NAME) |
| 881 | ret = cp_comp_to_string (d_left (ret_comp), 10); |
| 882 | else if (!require_params |
| 883 | && (ret_comp->type == DEMANGLE_COMPONENT_NAME |
| 884 | || ret_comp->type == DEMANGLE_COMPONENT_QUAL_NAME |
| 885 | || ret_comp->type == DEMANGLE_COMPONENT_TEMPLATE)) |
| 886 | ret = cp_comp_to_string (ret_comp, 10); |
| 887 | |
| 888 | return ret; |
| 889 | } |
| 890 | |
| 891 | /* DEMANGLED_NAME is the name of a function, including parameters and |
| 892 | (optionally) a return type. Return the name of the function |
| 893 | without parameters or return type, or NULL if we can not parse the |
| 894 | name. */ |
| 895 | |
| 896 | gdb::unique_xmalloc_ptr<char> |
| 897 | cp_remove_params (const char *demangled_name) |
| 898 | { |
| 899 | return cp_remove_params_1 (demangled_name, true); |
| 900 | } |
| 901 | |
| 902 | /* See cp-support.h. */ |
| 903 | |
| 904 | gdb::unique_xmalloc_ptr<char> |
| 905 | cp_remove_params_if_any (const char *demangled_name, bool completion_mode) |
| 906 | { |
| 907 | /* Trying to remove parameters from the empty string fails. If |
| 908 | we're completing / matching everything, avoid returning NULL |
| 909 | which would make callers interpret the result as an error. */ |
| 910 | if (demangled_name[0] == '\0' && completion_mode) |
| 911 | return gdb::unique_xmalloc_ptr<char> (xstrdup ("")); |
| 912 | |
| 913 | gdb::unique_xmalloc_ptr<char> without_params |
| 914 | = cp_remove_params_1 (demangled_name, false); |
| 915 | |
| 916 | if (without_params == NULL && completion_mode) |
| 917 | { |
| 918 | std::string copy = demangled_name; |
| 919 | |
| 920 | while (!copy.empty ()) |
| 921 | { |
| 922 | copy.pop_back (); |
| 923 | without_params = cp_remove_params_1 (copy.c_str (), false); |
| 924 | if (without_params != NULL) |
| 925 | break; |
| 926 | } |
| 927 | } |
| 928 | |
| 929 | return without_params; |
| 930 | } |
| 931 | |
| 932 | /* Here are some random pieces of trivia to keep in mind while trying |
| 933 | to take apart demangled names: |
| 934 | |
| 935 | - Names can contain function arguments or templates, so the process |
| 936 | has to be, to some extent recursive: maybe keep track of your |
| 937 | depth based on encountering <> and (). |
| 938 | |
| 939 | - Parentheses don't just have to happen at the end of a name: they |
| 940 | can occur even if the name in question isn't a function, because |
| 941 | a template argument might be a type that's a function. |
| 942 | |
| 943 | - Conversely, even if you're trying to deal with a function, its |
| 944 | demangled name might not end with ')': it could be a const or |
| 945 | volatile class method, in which case it ends with "const" or |
| 946 | "volatile". |
| 947 | |
| 948 | - Parentheses are also used in anonymous namespaces: a variable |
| 949 | 'foo' in an anonymous namespace gets demangled as "(anonymous |
| 950 | namespace)::foo". |
| 951 | |
| 952 | - And operator names can contain parentheses or angle brackets. */ |
| 953 | |
| 954 | /* FIXME: carlton/2003-03-13: We have several functions here with |
| 955 | overlapping functionality; can we combine them? Also, do they |
| 956 | handle all the above considerations correctly? */ |
| 957 | |
| 958 | |
| 959 | /* This returns the length of first component of NAME, which should be |
| 960 | the demangled name of a C++ variable/function/method/etc. |
| 961 | Specifically, it returns the index of the first colon forming the |
| 962 | boundary of the first component: so, given 'A::foo' or 'A::B::foo' |
| 963 | it returns the 1, and given 'foo', it returns 0. */ |
| 964 | |
| 965 | /* The character in NAME indexed by the return value is guaranteed to |
| 966 | always be either ':' or '\0'. */ |
| 967 | |
| 968 | /* NOTE: carlton/2003-03-13: This function is currently only intended |
| 969 | for internal use: it's probably not entirely safe when called on |
| 970 | user-generated input, because some of the 'index += 2' lines in |
| 971 | cp_find_first_component_aux might go past the end of malformed |
| 972 | input. */ |
| 973 | |
| 974 | unsigned int |
| 975 | cp_find_first_component (const char *name) |
| 976 | { |
| 977 | return cp_find_first_component_aux (name, 0); |
| 978 | } |
| 979 | |
| 980 | /* Helper function for cp_find_first_component. Like that function, |
| 981 | it returns the length of the first component of NAME, but to make |
| 982 | the recursion easier, it also stops if it reaches an unexpected ')' |
| 983 | or '>' if the value of PERMISSIVE is nonzero. */ |
| 984 | |
| 985 | static unsigned int |
| 986 | cp_find_first_component_aux (const char *name, int permissive) |
| 987 | { |
| 988 | unsigned int index = 0; |
| 989 | /* Operator names can show up in unexpected places. Since these can |
| 990 | contain parentheses or angle brackets, they can screw up the |
| 991 | recursion. But not every string 'operator' is part of an |
| 992 | operater name: e.g. you could have a variable 'cooperator'. So |
| 993 | this variable tells us whether or not we should treat the string |
| 994 | 'operator' as starting an operator. */ |
| 995 | int operator_possible = 1; |
| 996 | |
| 997 | for (;; ++index) |
| 998 | { |
| 999 | switch (name[index]) |
| 1000 | { |
| 1001 | case '<': |
| 1002 | /* Template; eat it up. The calls to cp_first_component |
| 1003 | should only return (I hope!) when they reach the '>' |
| 1004 | terminating the component or a '::' between two |
| 1005 | components. (Hence the '+ 2'.) */ |
| 1006 | index += 1; |
| 1007 | for (index += cp_find_first_component_aux (name + index, 1); |
| 1008 | name[index] != '>'; |
| 1009 | index += cp_find_first_component_aux (name + index, 1)) |
| 1010 | { |
| 1011 | if (name[index] != ':') |
| 1012 | { |
| 1013 | demangled_name_complaint (name); |
| 1014 | return strlen (name); |
| 1015 | } |
| 1016 | index += 2; |
| 1017 | } |
| 1018 | operator_possible = 1; |
| 1019 | break; |
| 1020 | case '(': |
| 1021 | /* Similar comment as to '<'. */ |
| 1022 | index += 1; |
| 1023 | for (index += cp_find_first_component_aux (name + index, 1); |
| 1024 | name[index] != ')'; |
| 1025 | index += cp_find_first_component_aux (name + index, 1)) |
| 1026 | { |
| 1027 | if (name[index] != ':') |
| 1028 | { |
| 1029 | demangled_name_complaint (name); |
| 1030 | return strlen (name); |
| 1031 | } |
| 1032 | index += 2; |
| 1033 | } |
| 1034 | operator_possible = 1; |
| 1035 | break; |
| 1036 | case '>': |
| 1037 | case ')': |
| 1038 | if (permissive) |
| 1039 | return index; |
| 1040 | else |
| 1041 | { |
| 1042 | demangled_name_complaint (name); |
| 1043 | return strlen (name); |
| 1044 | } |
| 1045 | case '\0': |
| 1046 | return index; |
| 1047 | case ':': |
| 1048 | /* ':' marks a component iff the next character is also a ':'. |
| 1049 | Otherwise it is probably malformed input. */ |
| 1050 | if (name[index + 1] == ':') |
| 1051 | return index; |
| 1052 | break; |
| 1053 | case 'o': |
| 1054 | /* Operator names can screw up the recursion. */ |
| 1055 | if (operator_possible |
| 1056 | && startswith (name + index, CP_OPERATOR_STR)) |
| 1057 | { |
| 1058 | index += CP_OPERATOR_LEN; |
| 1059 | while (ISSPACE(name[index])) |
| 1060 | ++index; |
| 1061 | switch (name[index]) |
| 1062 | { |
| 1063 | case '\0': |
| 1064 | return index; |
| 1065 | /* Skip over one less than the appropriate number of |
| 1066 | characters: the for loop will skip over the last |
| 1067 | one. */ |
| 1068 | case '<': |
| 1069 | if (name[index + 1] == '<') |
| 1070 | index += 1; |
| 1071 | else |
| 1072 | index += 0; |
| 1073 | break; |
| 1074 | case '>': |
| 1075 | case '-': |
| 1076 | if (name[index + 1] == '>') |
| 1077 | index += 1; |
| 1078 | else |
| 1079 | index += 0; |
| 1080 | break; |
| 1081 | case '(': |
| 1082 | index += 1; |
| 1083 | break; |
| 1084 | default: |
| 1085 | index += 0; |
| 1086 | break; |
| 1087 | } |
| 1088 | } |
| 1089 | operator_possible = 0; |
| 1090 | break; |
| 1091 | case ' ': |
| 1092 | case ',': |
| 1093 | case '.': |
| 1094 | case '&': |
| 1095 | case '*': |
| 1096 | /* NOTE: carlton/2003-04-18: I'm not sure what the precise |
| 1097 | set of relevant characters are here: it's necessary to |
| 1098 | include any character that can show up before 'operator' |
| 1099 | in a demangled name, and it's safe to include any |
| 1100 | character that can't be part of an identifier's name. */ |
| 1101 | operator_possible = 1; |
| 1102 | break; |
| 1103 | default: |
| 1104 | operator_possible = 0; |
| 1105 | break; |
| 1106 | } |
| 1107 | } |
| 1108 | } |
| 1109 | |
| 1110 | /* Complain about a demangled name that we don't know how to parse. |
| 1111 | NAME is the demangled name in question. */ |
| 1112 | |
| 1113 | static void |
| 1114 | demangled_name_complaint (const char *name) |
| 1115 | { |
| 1116 | complaint ("unexpected demangled name '%s'", name); |
| 1117 | } |
| 1118 | |
| 1119 | /* If NAME is the fully-qualified name of a C++ |
| 1120 | function/variable/method/etc., this returns the length of its |
| 1121 | entire prefix: all of the namespaces and classes that make up its |
| 1122 | name. Given 'A::foo', it returns 1, given 'A::B::foo', it returns |
| 1123 | 4, given 'foo', it returns 0. */ |
| 1124 | |
| 1125 | unsigned int |
| 1126 | cp_entire_prefix_len (const char *name) |
| 1127 | { |
| 1128 | unsigned int current_len = cp_find_first_component (name); |
| 1129 | unsigned int previous_len = 0; |
| 1130 | |
| 1131 | while (name[current_len] != '\0') |
| 1132 | { |
| 1133 | gdb_assert (name[current_len] == ':'); |
| 1134 | previous_len = current_len; |
| 1135 | /* Skip the '::'. */ |
| 1136 | current_len += 2; |
| 1137 | current_len += cp_find_first_component (name + current_len); |
| 1138 | } |
| 1139 | |
| 1140 | return previous_len; |
| 1141 | } |
| 1142 | |
| 1143 | /* Overload resolution functions. */ |
| 1144 | |
| 1145 | /* Test to see if SYM is a symbol that we haven't seen corresponding |
| 1146 | to a function named OLOAD_NAME. If so, add it to |
| 1147 | OVERLOAD_LIST. */ |
| 1148 | |
| 1149 | static void |
| 1150 | overload_list_add_symbol (struct symbol *sym, |
| 1151 | const char *oload_name, |
| 1152 | std::vector<symbol *> *overload_list) |
| 1153 | { |
| 1154 | /* If there is no type information, we can't do anything, so |
| 1155 | skip. */ |
| 1156 | if (SYMBOL_TYPE (sym) == NULL) |
| 1157 | return; |
| 1158 | |
| 1159 | /* skip any symbols that we've already considered. */ |
| 1160 | for (symbol *listed_sym : *overload_list) |
| 1161 | if (strcmp (SYMBOL_LINKAGE_NAME (sym), |
| 1162 | SYMBOL_LINKAGE_NAME (listed_sym)) == 0) |
| 1163 | return; |
| 1164 | |
| 1165 | /* Get the demangled name without parameters */ |
| 1166 | gdb::unique_xmalloc_ptr<char> sym_name |
| 1167 | = cp_remove_params (SYMBOL_NATURAL_NAME (sym)); |
| 1168 | if (!sym_name) |
| 1169 | return; |
| 1170 | |
| 1171 | /* skip symbols that cannot match */ |
| 1172 | if (strcmp (sym_name.get (), oload_name) != 0) |
| 1173 | return; |
| 1174 | |
| 1175 | overload_list->push_back (sym); |
| 1176 | } |
| 1177 | |
| 1178 | /* Return a null-terminated list of pointers to function symbols that |
| 1179 | are named FUNC_NAME and are visible within NAMESPACE. */ |
| 1180 | |
| 1181 | struct std::vector<symbol *> |
| 1182 | make_symbol_overload_list (const char *func_name, |
| 1183 | const char *the_namespace) |
| 1184 | { |
| 1185 | const char *name; |
| 1186 | std::vector<symbol *> overload_list; |
| 1187 | |
| 1188 | overload_list.reserve (100); |
| 1189 | |
| 1190 | add_symbol_overload_list_using (func_name, the_namespace, &overload_list); |
| 1191 | |
| 1192 | if (the_namespace[0] == '\0') |
| 1193 | name = func_name; |
| 1194 | else |
| 1195 | { |
| 1196 | char *concatenated_name |
| 1197 | = (char *) alloca (strlen (the_namespace) + 2 + strlen (func_name) + 1); |
| 1198 | strcpy (concatenated_name, the_namespace); |
| 1199 | strcat (concatenated_name, "::"); |
| 1200 | strcat (concatenated_name, func_name); |
| 1201 | name = concatenated_name; |
| 1202 | } |
| 1203 | |
| 1204 | add_symbol_overload_list_qualified (name, &overload_list); |
| 1205 | return overload_list; |
| 1206 | } |
| 1207 | |
| 1208 | /* Add all symbols with a name matching NAME in BLOCK to the overload |
| 1209 | list. */ |
| 1210 | |
| 1211 | static void |
| 1212 | add_symbol_overload_list_block (const char *name, |
| 1213 | const struct block *block, |
| 1214 | std::vector<symbol *> *overload_list) |
| 1215 | { |
| 1216 | struct block_iterator iter; |
| 1217 | struct symbol *sym; |
| 1218 | |
| 1219 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
| 1220 | |
| 1221 | ALL_BLOCK_SYMBOLS_WITH_NAME (block, lookup_name, iter, sym) |
| 1222 | overload_list_add_symbol (sym, name, overload_list); |
| 1223 | } |
| 1224 | |
| 1225 | /* Adds the function FUNC_NAME from NAMESPACE to the overload set. */ |
| 1226 | |
| 1227 | static void |
| 1228 | add_symbol_overload_list_namespace (const char *func_name, |
| 1229 | const char *the_namespace, |
| 1230 | std::vector<symbol *> *overload_list) |
| 1231 | { |
| 1232 | const char *name; |
| 1233 | const struct block *block = NULL; |
| 1234 | |
| 1235 | if (the_namespace[0] == '\0') |
| 1236 | name = func_name; |
| 1237 | else |
| 1238 | { |
| 1239 | char *concatenated_name |
| 1240 | = (char *) alloca (strlen (the_namespace) + 2 + strlen (func_name) + 1); |
| 1241 | |
| 1242 | strcpy (concatenated_name, the_namespace); |
| 1243 | strcat (concatenated_name, "::"); |
| 1244 | strcat (concatenated_name, func_name); |
| 1245 | name = concatenated_name; |
| 1246 | } |
| 1247 | |
| 1248 | /* Look in the static block. */ |
| 1249 | block = block_static_block (get_selected_block (0)); |
| 1250 | if (block) |
| 1251 | add_symbol_overload_list_block (name, block, overload_list); |
| 1252 | |
| 1253 | /* Look in the global block. */ |
| 1254 | block = block_global_block (block); |
| 1255 | if (block) |
| 1256 | add_symbol_overload_list_block (name, block, overload_list); |
| 1257 | |
| 1258 | } |
| 1259 | |
| 1260 | /* Search the namespace of the given type and namespace of and public |
| 1261 | base types. */ |
| 1262 | |
| 1263 | static void |
| 1264 | add_symbol_overload_list_adl_namespace (struct type *type, |
| 1265 | const char *func_name, |
| 1266 | std::vector<symbol *> *overload_list) |
| 1267 | { |
| 1268 | char *the_namespace; |
| 1269 | const char *type_name; |
| 1270 | int i, prefix_len; |
| 1271 | |
| 1272 | while (TYPE_CODE (type) == TYPE_CODE_PTR |
| 1273 | || TYPE_IS_REFERENCE (type) |
| 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 | |
| 1285 | if (type_name == NULL) |
| 1286 | return; |
| 1287 | |
| 1288 | prefix_len = cp_entire_prefix_len (type_name); |
| 1289 | |
| 1290 | if (prefix_len != 0) |
| 1291 | { |
| 1292 | the_namespace = (char *) alloca (prefix_len + 1); |
| 1293 | strncpy (the_namespace, type_name, prefix_len); |
| 1294 | the_namespace[prefix_len] = '\0'; |
| 1295 | |
| 1296 | add_symbol_overload_list_namespace (func_name, the_namespace, |
| 1297 | overload_list); |
| 1298 | } |
| 1299 | |
| 1300 | /* Check public base type */ |
| 1301 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
| 1302 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) |
| 1303 | { |
| 1304 | if (BASETYPE_VIA_PUBLIC (type, i)) |
| 1305 | add_symbol_overload_list_adl_namespace (TYPE_BASECLASS (type, i), |
| 1306 | func_name, |
| 1307 | overload_list); |
| 1308 | } |
| 1309 | } |
| 1310 | |
| 1311 | /* Adds to OVERLOAD_LIST the overload list overload candidates for |
| 1312 | FUNC_NAME found through argument dependent lookup. */ |
| 1313 | |
| 1314 | void |
| 1315 | add_symbol_overload_list_adl (gdb::array_view<type *> arg_types, |
| 1316 | const char *func_name, |
| 1317 | std::vector<symbol *> *overload_list) |
| 1318 | { |
| 1319 | for (type *arg_type : arg_types) |
| 1320 | add_symbol_overload_list_adl_namespace (arg_type, func_name, |
| 1321 | overload_list); |
| 1322 | } |
| 1323 | |
| 1324 | /* This applies the using directives to add namespaces to search in, |
| 1325 | and then searches for overloads in all of those namespaces. It |
| 1326 | adds the symbols found to sym_return_val. Arguments are as in |
| 1327 | make_symbol_overload_list. */ |
| 1328 | |
| 1329 | static void |
| 1330 | add_symbol_overload_list_using (const char *func_name, |
| 1331 | const char *the_namespace, |
| 1332 | std::vector<symbol *> *overload_list) |
| 1333 | { |
| 1334 | struct using_direct *current; |
| 1335 | const struct block *block; |
| 1336 | |
| 1337 | /* First, go through the using directives. If any of them apply, |
| 1338 | look in the appropriate namespaces for new functions to match |
| 1339 | on. */ |
| 1340 | |
| 1341 | for (block = get_selected_block (0); |
| 1342 | block != NULL; |
| 1343 | block = BLOCK_SUPERBLOCK (block)) |
| 1344 | for (current = block_using (block); |
| 1345 | current != NULL; |
| 1346 | current = current->next) |
| 1347 | { |
| 1348 | /* Prevent recursive calls. */ |
| 1349 | if (current->searched) |
| 1350 | continue; |
| 1351 | |
| 1352 | /* If this is a namespace alias or imported declaration ignore |
| 1353 | it. */ |
| 1354 | if (current->alias != NULL || current->declaration != NULL) |
| 1355 | continue; |
| 1356 | |
| 1357 | if (strcmp (the_namespace, current->import_dest) == 0) |
| 1358 | { |
| 1359 | /* Mark this import as searched so that the recursive call |
| 1360 | does not search it again. */ |
| 1361 | scoped_restore reset_directive_searched |
| 1362 | = make_scoped_restore (¤t->searched, 1); |
| 1363 | |
| 1364 | add_symbol_overload_list_using (func_name, |
| 1365 | current->import_src, |
| 1366 | overload_list); |
| 1367 | } |
| 1368 | } |
| 1369 | |
| 1370 | /* Now, add names for this namespace. */ |
| 1371 | add_symbol_overload_list_namespace (func_name, the_namespace, |
| 1372 | overload_list); |
| 1373 | } |
| 1374 | |
| 1375 | /* This does the bulk of the work of finding overloaded symbols. |
| 1376 | FUNC_NAME is the name of the overloaded function we're looking for |
| 1377 | (possibly including namespace info). */ |
| 1378 | |
| 1379 | static void |
| 1380 | add_symbol_overload_list_qualified (const char *func_name, |
| 1381 | std::vector<symbol *> *overload_list) |
| 1382 | { |
| 1383 | const struct block *b, *surrounding_static_block = 0; |
| 1384 | |
| 1385 | /* Look through the partial symtabs for all symbols which begin by |
| 1386 | matching FUNC_NAME. Make sure we read that symbol table in. */ |
| 1387 | |
| 1388 | for (objfile *objf : current_program_space->objfiles ()) |
| 1389 | { |
| 1390 | if (objf->sf) |
| 1391 | objf->sf->qf->expand_symtabs_for_function (objf, func_name); |
| 1392 | } |
| 1393 | |
| 1394 | /* Search upwards from currently selected frame (so that we can |
| 1395 | complete on local vars. */ |
| 1396 | |
| 1397 | for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b)) |
| 1398 | add_symbol_overload_list_block (func_name, b, overload_list); |
| 1399 | |
| 1400 | surrounding_static_block = block_static_block (get_selected_block (0)); |
| 1401 | |
| 1402 | /* Go through the symtabs and check the externs and statics for |
| 1403 | symbols which match. */ |
| 1404 | |
| 1405 | for (objfile *objfile : current_program_space->objfiles ()) |
| 1406 | { |
| 1407 | for (compunit_symtab *cust : objfile->compunits ()) |
| 1408 | { |
| 1409 | QUIT; |
| 1410 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), GLOBAL_BLOCK); |
| 1411 | add_symbol_overload_list_block (func_name, b, overload_list); |
| 1412 | } |
| 1413 | } |
| 1414 | |
| 1415 | for (objfile *objfile : current_program_space->objfiles ()) |
| 1416 | { |
| 1417 | for (compunit_symtab *cust : objfile->compunits ()) |
| 1418 | { |
| 1419 | QUIT; |
| 1420 | b = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), STATIC_BLOCK); |
| 1421 | /* Don't do this block twice. */ |
| 1422 | if (b == surrounding_static_block) |
| 1423 | continue; |
| 1424 | add_symbol_overload_list_block (func_name, b, overload_list); |
| 1425 | } |
| 1426 | } |
| 1427 | } |
| 1428 | |
| 1429 | /* Lookup the rtti type for a class name. */ |
| 1430 | |
| 1431 | struct type * |
| 1432 | cp_lookup_rtti_type (const char *name, const struct block *block) |
| 1433 | { |
| 1434 | struct symbol * rtti_sym; |
| 1435 | struct type * rtti_type; |
| 1436 | |
| 1437 | /* Use VAR_DOMAIN here as NAME may be a typedef. PR 18141, 18417. |
| 1438 | Classes "live" in both STRUCT_DOMAIN and VAR_DOMAIN. */ |
| 1439 | rtti_sym = lookup_symbol (name, block, VAR_DOMAIN, NULL).symbol; |
| 1440 | |
| 1441 | if (rtti_sym == NULL) |
| 1442 | { |
| 1443 | warning (_("RTTI symbol not found for class '%s'"), name); |
| 1444 | return NULL; |
| 1445 | } |
| 1446 | |
| 1447 | if (SYMBOL_CLASS (rtti_sym) != LOC_TYPEDEF) |
| 1448 | { |
| 1449 | warning (_("RTTI symbol for class '%s' is not a type"), name); |
| 1450 | return NULL; |
| 1451 | } |
| 1452 | |
| 1453 | rtti_type = check_typedef (SYMBOL_TYPE (rtti_sym)); |
| 1454 | |
| 1455 | switch (TYPE_CODE (rtti_type)) |
| 1456 | { |
| 1457 | case TYPE_CODE_STRUCT: |
| 1458 | break; |
| 1459 | case TYPE_CODE_NAMESPACE: |
| 1460 | /* chastain/2003-11-26: the symbol tables often contain fake |
| 1461 | symbols for namespaces with the same name as the struct. |
| 1462 | This warning is an indication of a bug in the lookup order |
| 1463 | or a bug in the way that the symbol tables are populated. */ |
| 1464 | warning (_("RTTI symbol for class '%s' is a namespace"), name); |
| 1465 | return NULL; |
| 1466 | default: |
| 1467 | warning (_("RTTI symbol for class '%s' has bad type"), name); |
| 1468 | return NULL; |
| 1469 | } |
| 1470 | |
| 1471 | return rtti_type; |
| 1472 | } |
| 1473 | |
| 1474 | #ifdef HAVE_WORKING_FORK |
| 1475 | |
| 1476 | /* If nonzero, attempt to catch crashes in the demangler and print |
| 1477 | useful debugging information. */ |
| 1478 | |
| 1479 | static int catch_demangler_crashes = 1; |
| 1480 | |
| 1481 | /* Stack context and environment for demangler crash recovery. */ |
| 1482 | |
| 1483 | static SIGJMP_BUF gdb_demangle_jmp_buf; |
| 1484 | |
| 1485 | /* If nonzero, attempt to dump core from the signal handler. */ |
| 1486 | |
| 1487 | static int gdb_demangle_attempt_core_dump = 1; |
| 1488 | |
| 1489 | /* Signal handler for gdb_demangle. */ |
| 1490 | |
| 1491 | static void |
| 1492 | gdb_demangle_signal_handler (int signo) |
| 1493 | { |
| 1494 | if (gdb_demangle_attempt_core_dump) |
| 1495 | { |
| 1496 | if (fork () == 0) |
| 1497 | dump_core (); |
| 1498 | |
| 1499 | gdb_demangle_attempt_core_dump = 0; |
| 1500 | } |
| 1501 | |
| 1502 | SIGLONGJMP (gdb_demangle_jmp_buf, signo); |
| 1503 | } |
| 1504 | |
| 1505 | #endif |
| 1506 | |
| 1507 | /* A wrapper for bfd_demangle. */ |
| 1508 | |
| 1509 | char * |
| 1510 | gdb_demangle (const char *name, int options) |
| 1511 | { |
| 1512 | char *result = NULL; |
| 1513 | int crash_signal = 0; |
| 1514 | |
| 1515 | #ifdef HAVE_WORKING_FORK |
| 1516 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) |
| 1517 | struct sigaction sa, old_sa; |
| 1518 | #else |
| 1519 | sighandler_t ofunc; |
| 1520 | #endif |
| 1521 | static int core_dump_allowed = -1; |
| 1522 | |
| 1523 | if (core_dump_allowed == -1) |
| 1524 | { |
| 1525 | core_dump_allowed = can_dump_core (LIMIT_CUR); |
| 1526 | |
| 1527 | if (!core_dump_allowed) |
| 1528 | gdb_demangle_attempt_core_dump = 0; |
| 1529 | } |
| 1530 | |
| 1531 | if (catch_demangler_crashes) |
| 1532 | { |
| 1533 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) |
| 1534 | sa.sa_handler = gdb_demangle_signal_handler; |
| 1535 | sigemptyset (&sa.sa_mask); |
| 1536 | #ifdef HAVE_SIGALTSTACK |
| 1537 | sa.sa_flags = SA_ONSTACK; |
| 1538 | #else |
| 1539 | sa.sa_flags = 0; |
| 1540 | #endif |
| 1541 | sigaction (SIGSEGV, &sa, &old_sa); |
| 1542 | #else |
| 1543 | ofunc = signal (SIGSEGV, gdb_demangle_signal_handler); |
| 1544 | #endif |
| 1545 | |
| 1546 | crash_signal = SIGSETJMP (gdb_demangle_jmp_buf); |
| 1547 | } |
| 1548 | #endif |
| 1549 | |
| 1550 | if (crash_signal == 0) |
| 1551 | result = bfd_demangle (NULL, name, options); |
| 1552 | |
| 1553 | #ifdef HAVE_WORKING_FORK |
| 1554 | if (catch_demangler_crashes) |
| 1555 | { |
| 1556 | #if defined (HAVE_SIGACTION) && defined (SA_RESTART) |
| 1557 | sigaction (SIGSEGV, &old_sa, NULL); |
| 1558 | #else |
| 1559 | signal (SIGSEGV, ofunc); |
| 1560 | #endif |
| 1561 | |
| 1562 | if (crash_signal != 0) |
| 1563 | { |
| 1564 | static int error_reported = 0; |
| 1565 | |
| 1566 | if (!error_reported) |
| 1567 | { |
| 1568 | std::string short_msg |
| 1569 | = string_printf (_("unable to demangle '%s' " |
| 1570 | "(demangler failed with signal %d)"), |
| 1571 | name, crash_signal); |
| 1572 | |
| 1573 | std::string long_msg |
| 1574 | = string_printf ("%s:%d: %s: %s", __FILE__, __LINE__, |
| 1575 | "demangler-warning", short_msg.c_str ()); |
| 1576 | |
| 1577 | target_terminal::scoped_restore_terminal_state term_state; |
| 1578 | target_terminal::ours_for_output (); |
| 1579 | |
| 1580 | begin_line (); |
| 1581 | if (core_dump_allowed) |
| 1582 | fprintf_unfiltered (gdb_stderr, |
| 1583 | _("%s\nAttempting to dump core.\n"), |
| 1584 | long_msg.c_str ()); |
| 1585 | else |
| 1586 | warn_cant_dump_core (long_msg.c_str ()); |
| 1587 | |
| 1588 | demangler_warning (__FILE__, __LINE__, "%s", short_msg.c_str ()); |
| 1589 | |
| 1590 | error_reported = 1; |
| 1591 | } |
| 1592 | |
| 1593 | result = NULL; |
| 1594 | } |
| 1595 | } |
| 1596 | #endif |
| 1597 | |
| 1598 | return result; |
| 1599 | } |
| 1600 | |
| 1601 | /* See cp-support.h. */ |
| 1602 | |
| 1603 | int |
| 1604 | gdb_sniff_from_mangled_name (const char *mangled, char **demangled) |
| 1605 | { |
| 1606 | *demangled = gdb_demangle (mangled, DMGL_PARAMS | DMGL_ANSI); |
| 1607 | return *demangled != NULL; |
| 1608 | } |
| 1609 | |
| 1610 | /* See cp-support.h. */ |
| 1611 | |
| 1612 | unsigned int |
| 1613 | cp_search_name_hash (const char *search_name) |
| 1614 | { |
| 1615 | /* cp_entire_prefix_len assumes a fully-qualified name with no |
| 1616 | leading "::". */ |
| 1617 | if (startswith (search_name, "::")) |
| 1618 | search_name += 2; |
| 1619 | |
| 1620 | unsigned int prefix_len = cp_entire_prefix_len (search_name); |
| 1621 | if (prefix_len != 0) |
| 1622 | search_name += prefix_len + 2; |
| 1623 | |
| 1624 | unsigned int hash = 0; |
| 1625 | for (const char *string = search_name; *string != '\0'; ++string) |
| 1626 | { |
| 1627 | string = skip_spaces (string); |
| 1628 | |
| 1629 | if (*string == '(') |
| 1630 | break; |
| 1631 | |
| 1632 | /* Ignore ABI tags such as "[abi:cxx11]. */ |
| 1633 | if (*string == '[' |
| 1634 | && startswith (string + 1, "abi:") |
| 1635 | && string[5] != ':') |
| 1636 | break; |
| 1637 | |
| 1638 | hash = SYMBOL_HASH_NEXT (hash, *string); |
| 1639 | } |
| 1640 | return hash; |
| 1641 | } |
| 1642 | |
| 1643 | /* Helper for cp_symbol_name_matches (i.e., symbol_name_matcher_ftype |
| 1644 | implementation for symbol_name_match_type::WILD matching). Split |
| 1645 | to a separate function for unit-testing convenience. |
| 1646 | |
| 1647 | If SYMBOL_SEARCH_NAME has more scopes than LOOKUP_NAME, we try to |
| 1648 | match ignoring the extra leading scopes of SYMBOL_SEARCH_NAME. |
| 1649 | This allows conveniently setting breakpoints on functions/methods |
| 1650 | inside any namespace/class without specifying the fully-qualified |
| 1651 | name. |
| 1652 | |
| 1653 | E.g., these match: |
| 1654 | |
| 1655 | [symbol search name] [lookup name] |
| 1656 | foo::bar::func foo::bar::func |
| 1657 | foo::bar::func bar::func |
| 1658 | foo::bar::func func |
| 1659 | |
| 1660 | While these don't: |
| 1661 | |
| 1662 | [symbol search name] [lookup name] |
| 1663 | foo::zbar::func bar::func |
| 1664 | foo::bar::func foo::func |
| 1665 | |
| 1666 | See more examples in the test_cp_symbol_name_matches selftest |
| 1667 | function below. |
| 1668 | |
| 1669 | See symbol_name_matcher_ftype for description of SYMBOL_SEARCH_NAME |
| 1670 | and COMP_MATCH_RES. |
| 1671 | |
| 1672 | LOOKUP_NAME/LOOKUP_NAME_LEN is the name we're looking up. |
| 1673 | |
| 1674 | See strncmp_iw_with_mode for description of MODE. |
| 1675 | */ |
| 1676 | |
| 1677 | static bool |
| 1678 | cp_symbol_name_matches_1 (const char *symbol_search_name, |
| 1679 | const char *lookup_name, |
| 1680 | size_t lookup_name_len, |
| 1681 | strncmp_iw_mode mode, |
| 1682 | completion_match_result *comp_match_res) |
| 1683 | { |
| 1684 | const char *sname = symbol_search_name; |
| 1685 | completion_match_for_lcd *match_for_lcd |
| 1686 | = (comp_match_res != NULL ? &comp_match_res->match_for_lcd : NULL); |
| 1687 | |
| 1688 | while (true) |
| 1689 | { |
| 1690 | if (strncmp_iw_with_mode (sname, lookup_name, lookup_name_len, |
| 1691 | mode, language_cplus, match_for_lcd) == 0) |
| 1692 | { |
| 1693 | if (comp_match_res != NULL) |
| 1694 | { |
| 1695 | /* Note here we set different MATCH and MATCH_FOR_LCD |
| 1696 | strings. This is because with |
| 1697 | |
| 1698 | (gdb) b push_bac[TAB] |
| 1699 | |
| 1700 | we want the completion matches to list |
| 1701 | |
| 1702 | std::vector<int>::push_back(...) |
| 1703 | std::vector<char>::push_back(...) |
| 1704 | |
| 1705 | etc., which are SYMBOL_SEARCH_NAMEs, while we want |
| 1706 | the input line to auto-complete to |
| 1707 | |
| 1708 | (gdb) push_back(...) |
| 1709 | |
| 1710 | which is SNAME, not to |
| 1711 | |
| 1712 | (gdb) std::vector< |
| 1713 | |
| 1714 | which would be the regular common prefix between all |
| 1715 | the matches otherwise. */ |
| 1716 | comp_match_res->set_match (symbol_search_name, sname); |
| 1717 | } |
| 1718 | return true; |
| 1719 | } |
| 1720 | |
| 1721 | unsigned int len = cp_find_first_component (sname); |
| 1722 | |
| 1723 | if (sname[len] == '\0') |
| 1724 | return false; |
| 1725 | |
| 1726 | gdb_assert (sname[len] == ':'); |
| 1727 | /* Skip the '::'. */ |
| 1728 | sname += len + 2; |
| 1729 | } |
| 1730 | } |
| 1731 | |
| 1732 | /* C++ symbol_name_matcher_ftype implementation. */ |
| 1733 | |
| 1734 | static bool |
| 1735 | cp_fq_symbol_name_matches (const char *symbol_search_name, |
| 1736 | const lookup_name_info &lookup_name, |
| 1737 | completion_match_result *comp_match_res) |
| 1738 | { |
| 1739 | /* Get the demangled name. */ |
| 1740 | const std::string &name = lookup_name.cplus ().lookup_name (); |
| 1741 | completion_match_for_lcd *match_for_lcd |
| 1742 | = (comp_match_res != NULL ? &comp_match_res->match_for_lcd : NULL); |
| 1743 | strncmp_iw_mode mode = (lookup_name.completion_mode () |
| 1744 | ? strncmp_iw_mode::NORMAL |
| 1745 | : strncmp_iw_mode::MATCH_PARAMS); |
| 1746 | |
| 1747 | if (strncmp_iw_with_mode (symbol_search_name, |
| 1748 | name.c_str (), name.size (), |
| 1749 | mode, language_cplus, match_for_lcd) == 0) |
| 1750 | { |
| 1751 | if (comp_match_res != NULL) |
| 1752 | comp_match_res->set_match (symbol_search_name); |
| 1753 | return true; |
| 1754 | } |
| 1755 | |
| 1756 | return false; |
| 1757 | } |
| 1758 | |
| 1759 | /* C++ symbol_name_matcher_ftype implementation for wild matches. |
| 1760 | Defers work to cp_symbol_name_matches_1. */ |
| 1761 | |
| 1762 | static bool |
| 1763 | cp_symbol_name_matches (const char *symbol_search_name, |
| 1764 | const lookup_name_info &lookup_name, |
| 1765 | completion_match_result *comp_match_res) |
| 1766 | { |
| 1767 | /* Get the demangled name. */ |
| 1768 | const std::string &name = lookup_name.cplus ().lookup_name (); |
| 1769 | |
| 1770 | strncmp_iw_mode mode = (lookup_name.completion_mode () |
| 1771 | ? strncmp_iw_mode::NORMAL |
| 1772 | : strncmp_iw_mode::MATCH_PARAMS); |
| 1773 | |
| 1774 | return cp_symbol_name_matches_1 (symbol_search_name, |
| 1775 | name.c_str (), name.size (), |
| 1776 | mode, comp_match_res); |
| 1777 | } |
| 1778 | |
| 1779 | /* See cp-support.h. */ |
| 1780 | |
| 1781 | symbol_name_matcher_ftype * |
| 1782 | cp_get_symbol_name_matcher (const lookup_name_info &lookup_name) |
| 1783 | { |
| 1784 | switch (lookup_name.match_type ()) |
| 1785 | { |
| 1786 | case symbol_name_match_type::FULL: |
| 1787 | case symbol_name_match_type::EXPRESSION: |
| 1788 | case symbol_name_match_type::SEARCH_NAME: |
| 1789 | return cp_fq_symbol_name_matches; |
| 1790 | case symbol_name_match_type::WILD: |
| 1791 | return cp_symbol_name_matches; |
| 1792 | } |
| 1793 | |
| 1794 | gdb_assert_not_reached (""); |
| 1795 | } |
| 1796 | |
| 1797 | #if GDB_SELF_TEST |
| 1798 | |
| 1799 | namespace selftests { |
| 1800 | |
| 1801 | void |
| 1802 | test_cp_symbol_name_matches () |
| 1803 | { |
| 1804 | #define CHECK_MATCH(SYMBOL, INPUT) \ |
| 1805 | SELF_CHECK (cp_symbol_name_matches_1 (SYMBOL, \ |
| 1806 | INPUT, sizeof (INPUT) - 1, \ |
| 1807 | strncmp_iw_mode::MATCH_PARAMS, \ |
| 1808 | NULL)) |
| 1809 | |
| 1810 | #define CHECK_NOT_MATCH(SYMBOL, INPUT) \ |
| 1811 | SELF_CHECK (!cp_symbol_name_matches_1 (SYMBOL, \ |
| 1812 | INPUT, sizeof (INPUT) - 1, \ |
| 1813 | strncmp_iw_mode::MATCH_PARAMS, \ |
| 1814 | NULL)) |
| 1815 | |
| 1816 | /* Like CHECK_MATCH, and also check that INPUT (and all substrings |
| 1817 | that start at index 0) completes to SYMBOL. */ |
| 1818 | #define CHECK_MATCH_C(SYMBOL, INPUT) \ |
| 1819 | do \ |
| 1820 | { \ |
| 1821 | CHECK_MATCH (SYMBOL, INPUT); \ |
| 1822 | for (size_t i = 0; i < sizeof (INPUT) - 1; i++) \ |
| 1823 | SELF_CHECK (cp_symbol_name_matches_1 (SYMBOL, INPUT, i, \ |
| 1824 | strncmp_iw_mode::NORMAL, \ |
| 1825 | NULL)); \ |
| 1826 | } while (0) |
| 1827 | |
| 1828 | /* Like CHECK_NOT_MATCH, and also check that INPUT does NOT complete |
| 1829 | to SYMBOL. */ |
| 1830 | #define CHECK_NOT_MATCH_C(SYMBOL, INPUT) \ |
| 1831 | do \ |
| 1832 | { \ |
| 1833 | CHECK_NOT_MATCH (SYMBOL, INPUT); \ |
| 1834 | SELF_CHECK (!cp_symbol_name_matches_1 (SYMBOL, INPUT, \ |
| 1835 | sizeof (INPUT) - 1, \ |
| 1836 | strncmp_iw_mode::NORMAL, \ |
| 1837 | NULL)); \ |
| 1838 | } while (0) |
| 1839 | |
| 1840 | /* Lookup name without parens matches all overloads. */ |
| 1841 | CHECK_MATCH_C ("function()", "function"); |
| 1842 | CHECK_MATCH_C ("function(int)", "function"); |
| 1843 | |
| 1844 | /* Check whitespace around parameters is ignored. */ |
| 1845 | CHECK_MATCH_C ("function()", "function ()"); |
| 1846 | CHECK_MATCH_C ("function ( )", "function()"); |
| 1847 | CHECK_MATCH_C ("function ()", "function( )"); |
| 1848 | CHECK_MATCH_C ("func(int)", "func( int )"); |
| 1849 | CHECK_MATCH_C ("func(int)", "func ( int ) "); |
| 1850 | CHECK_MATCH_C ("func ( int )", "func( int )"); |
| 1851 | CHECK_MATCH_C ("func ( int )", "func ( int ) "); |
| 1852 | |
| 1853 | /* Check symbol name prefixes aren't incorrectly matched. */ |
| 1854 | CHECK_NOT_MATCH ("func", "function"); |
| 1855 | CHECK_NOT_MATCH ("function", "func"); |
| 1856 | CHECK_NOT_MATCH ("function()", "func"); |
| 1857 | |
| 1858 | /* Check that if the lookup name includes parameters, only the right |
| 1859 | overload matches. */ |
| 1860 | CHECK_MATCH_C ("function(int)", "function(int)"); |
| 1861 | CHECK_NOT_MATCH_C ("function(int)", "function()"); |
| 1862 | |
| 1863 | /* Check that whitespace within symbol names is not ignored. */ |
| 1864 | CHECK_NOT_MATCH_C ("function", "func tion"); |
| 1865 | CHECK_NOT_MATCH_C ("func__tion", "func_ _tion"); |
| 1866 | CHECK_NOT_MATCH_C ("func11tion", "func1 1tion"); |
| 1867 | |
| 1868 | /* Check the converse, which can happen with template function, |
| 1869 | where the return type is part of the demangled name. */ |
| 1870 | CHECK_NOT_MATCH_C ("func tion", "function"); |
| 1871 | CHECK_NOT_MATCH_C ("func1 1tion", "func11tion"); |
| 1872 | CHECK_NOT_MATCH_C ("func_ _tion", "func__tion"); |
| 1873 | |
| 1874 | /* Within parameters too. */ |
| 1875 | CHECK_NOT_MATCH_C ("func(param)", "func(par am)"); |
| 1876 | |
| 1877 | /* Check handling of whitespace around C++ operators. */ |
| 1878 | CHECK_NOT_MATCH_C ("operator<<", "opera tor<<"); |
| 1879 | CHECK_NOT_MATCH_C ("operator<<", "operator< <"); |
| 1880 | CHECK_NOT_MATCH_C ("operator<<", "operator < <"); |
| 1881 | CHECK_NOT_MATCH_C ("operator==", "operator= ="); |
| 1882 | CHECK_NOT_MATCH_C ("operator==", "operator = ="); |
| 1883 | CHECK_MATCH_C ("operator<<", "operator <<"); |
| 1884 | CHECK_MATCH_C ("operator<<()", "operator <<"); |
| 1885 | CHECK_NOT_MATCH_C ("operator<<()", "operator<<(int)"); |
| 1886 | CHECK_NOT_MATCH_C ("operator<<(int)", "operator<<()"); |
| 1887 | CHECK_MATCH_C ("operator==", "operator =="); |
| 1888 | CHECK_MATCH_C ("operator==()", "operator =="); |
| 1889 | CHECK_MATCH_C ("operator <<", "operator<<"); |
| 1890 | CHECK_MATCH_C ("operator ==", "operator=="); |
| 1891 | CHECK_MATCH_C ("operator bool", "operator bool"); |
| 1892 | CHECK_MATCH_C ("operator bool ()", "operator bool"); |
| 1893 | CHECK_MATCH_C ("operatorX<<", "operatorX < <"); |
| 1894 | CHECK_MATCH_C ("Xoperator<<", "Xoperator < <"); |
| 1895 | |
| 1896 | CHECK_MATCH_C ("operator()(int)", "operator()(int)"); |
| 1897 | CHECK_MATCH_C ("operator()(int)", "operator ( ) ( int )"); |
| 1898 | CHECK_MATCH_C ("operator()<long>(int)", "operator ( ) < long > ( int )"); |
| 1899 | /* The first "()" is not the parameter list. */ |
| 1900 | CHECK_NOT_MATCH ("operator()(int)", "operator"); |
| 1901 | |
| 1902 | /* Misc user-defined operator tests. */ |
| 1903 | |
| 1904 | CHECK_NOT_MATCH_C ("operator/=()", "operator ^="); |
| 1905 | /* Same length at end of input. */ |
| 1906 | CHECK_NOT_MATCH_C ("operator>>", "operator[]"); |
| 1907 | /* Same length but not at end of input. */ |
| 1908 | CHECK_NOT_MATCH_C ("operator>>()", "operator[]()"); |
| 1909 | |
| 1910 | CHECK_MATCH_C ("base::operator char*()", "base::operator char*()"); |
| 1911 | CHECK_MATCH_C ("base::operator char*()", "base::operator char * ()"); |
| 1912 | CHECK_MATCH_C ("base::operator char**()", "base::operator char * * ()"); |
| 1913 | CHECK_MATCH ("base::operator char**()", "base::operator char * *"); |
| 1914 | CHECK_MATCH_C ("base::operator*()", "base::operator*()"); |
| 1915 | CHECK_NOT_MATCH_C ("base::operator char*()", "base::operatorc"); |
| 1916 | CHECK_NOT_MATCH ("base::operator char*()", "base::operator char"); |
| 1917 | CHECK_NOT_MATCH ("base::operator char*()", "base::operat"); |
| 1918 | |
| 1919 | /* Check handling of whitespace around C++ scope operators. */ |
| 1920 | CHECK_NOT_MATCH_C ("foo::bar", "foo: :bar"); |
| 1921 | CHECK_MATCH_C ("foo::bar", "foo :: bar"); |
| 1922 | CHECK_MATCH_C ("foo :: bar", "foo::bar"); |
| 1923 | |
| 1924 | CHECK_MATCH_C ("abc::def::ghi()", "abc::def::ghi()"); |
| 1925 | CHECK_MATCH_C ("abc::def::ghi ( )", "abc::def::ghi()"); |
| 1926 | CHECK_MATCH_C ("abc::def::ghi()", "abc::def::ghi ( )"); |
| 1927 | CHECK_MATCH_C ("function()", "function()"); |
| 1928 | CHECK_MATCH_C ("bar::function()", "bar::function()"); |
| 1929 | |
| 1930 | /* Wild matching tests follow. */ |
| 1931 | |
| 1932 | /* Tests matching symbols in some scope. */ |
| 1933 | CHECK_MATCH_C ("foo::function()", "function"); |
| 1934 | CHECK_MATCH_C ("foo::function(int)", "function"); |
| 1935 | CHECK_MATCH_C ("foo::bar::function()", "function"); |
| 1936 | CHECK_MATCH_C ("bar::function()", "bar::function"); |
| 1937 | CHECK_MATCH_C ("foo::bar::function()", "bar::function"); |
| 1938 | CHECK_MATCH_C ("foo::bar::function(int)", "bar::function"); |
| 1939 | |
| 1940 | /* Same, with parameters in the lookup name. */ |
| 1941 | CHECK_MATCH_C ("foo::function()", "function()"); |
| 1942 | CHECK_MATCH_C ("foo::bar::function()", "function()"); |
| 1943 | CHECK_MATCH_C ("foo::function(int)", "function(int)"); |
| 1944 | CHECK_MATCH_C ("foo::function()", "foo::function()"); |
| 1945 | CHECK_MATCH_C ("foo::bar::function()", "bar::function()"); |
| 1946 | CHECK_MATCH_C ("foo::bar::function(int)", "bar::function(int)"); |
| 1947 | CHECK_MATCH_C ("bar::function()", "bar::function()"); |
| 1948 | |
| 1949 | CHECK_NOT_MATCH_C ("foo::bar::function(int)", "bar::function()"); |
| 1950 | |
| 1951 | CHECK_MATCH_C ("(anonymous namespace)::bar::function(int)", |
| 1952 | "bar::function(int)"); |
| 1953 | CHECK_MATCH_C ("foo::(anonymous namespace)::bar::function(int)", |
| 1954 | "function(int)"); |
| 1955 | |
| 1956 | /* Lookup scope wider than symbol scope, should not match. */ |
| 1957 | CHECK_NOT_MATCH_C ("function()", "bar::function"); |
| 1958 | CHECK_NOT_MATCH_C ("function()", "bar::function()"); |
| 1959 | |
| 1960 | /* Explicit global scope doesn't match. */ |
| 1961 | CHECK_NOT_MATCH_C ("foo::function()", "::function"); |
| 1962 | CHECK_NOT_MATCH_C ("foo::function()", "::function()"); |
| 1963 | CHECK_NOT_MATCH_C ("foo::function(int)", "::function()"); |
| 1964 | CHECK_NOT_MATCH_C ("foo::function(int)", "::function(int)"); |
| 1965 | |
| 1966 | /* Test ABI tag matching/ignoring. */ |
| 1967 | |
| 1968 | /* If the symbol name has an ABI tag, but the lookup name doesn't, |
| 1969 | then the ABI tag in the symbol name is ignored. */ |
| 1970 | CHECK_MATCH_C ("function[abi:foo]()", "function"); |
| 1971 | CHECK_MATCH_C ("function[abi:foo](int)", "function"); |
| 1972 | CHECK_MATCH_C ("function[abi:foo]()", "function ()"); |
| 1973 | CHECK_NOT_MATCH_C ("function[abi:foo]()", "function (int)"); |
| 1974 | |
| 1975 | CHECK_MATCH_C ("function[abi:foo]()", "function[abi:foo]"); |
| 1976 | CHECK_MATCH_C ("function[abi:foo](int)", "function[abi:foo]"); |
| 1977 | CHECK_MATCH_C ("function[abi:foo]()", "function[abi:foo] ()"); |
| 1978 | CHECK_MATCH_C ("function[abi:foo][abi:bar]()", "function"); |
| 1979 | CHECK_MATCH_C ("function[abi:foo][abi:bar](int)", "function"); |
| 1980 | CHECK_MATCH_C ("function[abi:foo][abi:bar]()", "function[abi:foo]"); |
| 1981 | CHECK_MATCH_C ("function[abi:foo][abi:bar](int)", "function[abi:foo]"); |
| 1982 | CHECK_MATCH_C ("function[abi:foo][abi:bar]()", "function[abi:foo] ()"); |
| 1983 | CHECK_NOT_MATCH_C ("function[abi:foo][abi:bar]()", "function[abi:foo] (int)"); |
| 1984 | |
| 1985 | CHECK_MATCH_C ("function [abi:foo][abi:bar] ( )", "function [abi:foo]"); |
| 1986 | |
| 1987 | /* If the symbol name does not have an ABI tag, while the lookup |
| 1988 | name has one, then there's no match. */ |
| 1989 | CHECK_NOT_MATCH_C ("function()", "function[abi:foo]()"); |
| 1990 | CHECK_NOT_MATCH_C ("function()", "function[abi:foo]"); |
| 1991 | } |
| 1992 | |
| 1993 | /* If non-NULL, return STR wrapped in quotes. Otherwise, return a |
| 1994 | "<null>" string (with no quotes). */ |
| 1995 | |
| 1996 | static std::string |
| 1997 | quote (const char *str) |
| 1998 | { |
| 1999 | if (str != NULL) |
| 2000 | return std::string (1, '\"') + str + '\"'; |
| 2001 | else |
| 2002 | return "<null>"; |
| 2003 | } |
| 2004 | |
| 2005 | /* Check that removing parameter info out of NAME produces EXPECTED. |
| 2006 | COMPLETION_MODE indicates whether we're testing normal and |
| 2007 | completion mode. FILE and LINE are used to provide better test |
| 2008 | location information in case ithe check fails. */ |
| 2009 | |
| 2010 | static void |
| 2011 | check_remove_params (const char *file, int line, |
| 2012 | const char *name, const char *expected, |
| 2013 | bool completion_mode) |
| 2014 | { |
| 2015 | gdb::unique_xmalloc_ptr<char> result |
| 2016 | = cp_remove_params_if_any (name, completion_mode); |
| 2017 | |
| 2018 | if ((expected == NULL) != (result == NULL) |
| 2019 | || (expected != NULL |
| 2020 | && strcmp (result.get (), expected) != 0)) |
| 2021 | { |
| 2022 | error (_("%s:%d: make-paramless self-test failed: (completion=%d) " |
| 2023 | "\"%s\" -> %s, expected %s"), |
| 2024 | file, line, completion_mode, name, |
| 2025 | quote (result.get ()).c_str (), quote (expected).c_str ()); |
| 2026 | } |
| 2027 | } |
| 2028 | |
| 2029 | /* Entry point for cp_remove_params unit tests. */ |
| 2030 | |
| 2031 | static void |
| 2032 | test_cp_remove_params () |
| 2033 | { |
| 2034 | /* Check that removing parameter info out of NAME produces EXPECTED. |
| 2035 | Checks both normal and completion modes. */ |
| 2036 | #define CHECK(NAME, EXPECTED) \ |
| 2037 | do \ |
| 2038 | { \ |
| 2039 | check_remove_params (__FILE__, __LINE__, NAME, EXPECTED, false); \ |
| 2040 | check_remove_params (__FILE__, __LINE__, NAME, EXPECTED, true); \ |
| 2041 | } \ |
| 2042 | while (0) |
| 2043 | |
| 2044 | /* Similar, but used when NAME is incomplete -- i.e., is has |
| 2045 | unbalanced parentheses. In this case, looking for the exact name |
| 2046 | should fail / return empty. */ |
| 2047 | #define CHECK_INCOMPL(NAME, EXPECTED) \ |
| 2048 | do \ |
| 2049 | { \ |
| 2050 | check_remove_params (__FILE__, __LINE__, NAME, NULL, false); \ |
| 2051 | check_remove_params (__FILE__, __LINE__, NAME, EXPECTED, true); \ |
| 2052 | } \ |
| 2053 | while (0) |
| 2054 | |
| 2055 | CHECK ("function()", "function"); |
| 2056 | CHECK_INCOMPL ("function(", "function"); |
| 2057 | CHECK ("function() const", "function"); |
| 2058 | |
| 2059 | CHECK ("(anonymous namespace)::A::B::C", |
| 2060 | "(anonymous namespace)::A::B::C"); |
| 2061 | |
| 2062 | CHECK ("A::(anonymous namespace)", |
| 2063 | "A::(anonymous namespace)"); |
| 2064 | |
| 2065 | CHECK_INCOMPL ("A::(anonymou", "A"); |
| 2066 | |
| 2067 | CHECK ("A::foo<int>()", |
| 2068 | "A::foo<int>"); |
| 2069 | |
| 2070 | CHECK_INCOMPL ("A::foo<int>(", |
| 2071 | "A::foo<int>"); |
| 2072 | |
| 2073 | CHECK ("A::foo<(anonymous namespace)::B>::func(int)", |
| 2074 | "A::foo<(anonymous namespace)::B>::func"); |
| 2075 | |
| 2076 | CHECK_INCOMPL ("A::foo<(anonymous namespace)::B>::func(in", |
| 2077 | "A::foo<(anonymous namespace)::B>::func"); |
| 2078 | |
| 2079 | CHECK_INCOMPL ("A::foo<(anonymous namespace)::B>::", |
| 2080 | "A::foo<(anonymous namespace)::B>"); |
| 2081 | |
| 2082 | CHECK_INCOMPL ("A::foo<(anonymous namespace)::B>:", |
| 2083 | "A::foo<(anonymous namespace)::B>"); |
| 2084 | |
| 2085 | CHECK ("A::foo<(anonymous namespace)::B>", |
| 2086 | "A::foo<(anonymous namespace)::B>"); |
| 2087 | |
| 2088 | CHECK_INCOMPL ("A::foo<(anonymous namespace)::B", |
| 2089 | "A::foo"); |
| 2090 | |
| 2091 | /* Shouldn't this parse? Looks like a bug in |
| 2092 | cp_demangled_name_to_comp. See PR c++/22411. */ |
| 2093 | #if 0 |
| 2094 | CHECK ("A::foo<void(int)>::func(int)", |
| 2095 | "A::foo<void(int)>::func"); |
| 2096 | #else |
| 2097 | CHECK_INCOMPL ("A::foo<void(int)>::func(int)", |
| 2098 | "A::foo"); |
| 2099 | #endif |
| 2100 | |
| 2101 | CHECK_INCOMPL ("A::foo<void(int", |
| 2102 | "A::foo"); |
| 2103 | |
| 2104 | #undef CHECK |
| 2105 | #undef CHECK_INCOMPL |
| 2106 | } |
| 2107 | |
| 2108 | } // namespace selftests |
| 2109 | |
| 2110 | #endif /* GDB_SELF_CHECK */ |
| 2111 | |
| 2112 | /* Don't allow just "maintenance cplus". */ |
| 2113 | |
| 2114 | static void |
| 2115 | maint_cplus_command (const char *arg, int from_tty) |
| 2116 | { |
| 2117 | printf_unfiltered (_("\"maintenance cplus\" must be followed " |
| 2118 | "by the name of a command.\n")); |
| 2119 | help_list (maint_cplus_cmd_list, |
| 2120 | "maintenance cplus ", |
| 2121 | all_commands, gdb_stdout); |
| 2122 | } |
| 2123 | |
| 2124 | /* This is a front end for cp_find_first_component, for unit testing. |
| 2125 | Be careful when using it: see the NOTE above |
| 2126 | cp_find_first_component. */ |
| 2127 | |
| 2128 | static void |
| 2129 | first_component_command (const char *arg, int from_tty) |
| 2130 | { |
| 2131 | int len; |
| 2132 | char *prefix; |
| 2133 | |
| 2134 | if (!arg) |
| 2135 | return; |
| 2136 | |
| 2137 | len = cp_find_first_component (arg); |
| 2138 | prefix = (char *) alloca (len + 1); |
| 2139 | |
| 2140 | memcpy (prefix, arg, len); |
| 2141 | prefix[len] = '\0'; |
| 2142 | |
| 2143 | printf_unfiltered ("%s\n", prefix); |
| 2144 | } |
| 2145 | |
| 2146 | /* Implement "info vtbl". */ |
| 2147 | |
| 2148 | static void |
| 2149 | info_vtbl_command (const char *arg, int from_tty) |
| 2150 | { |
| 2151 | struct value *value; |
| 2152 | |
| 2153 | value = parse_and_eval (arg); |
| 2154 | cplus_print_vtable (value); |
| 2155 | } |
| 2156 | |
| 2157 | void |
| 2158 | _initialize_cp_support (void) |
| 2159 | { |
| 2160 | add_prefix_cmd ("cplus", class_maintenance, |
| 2161 | maint_cplus_command, |
| 2162 | _("C++ maintenance commands."), |
| 2163 | &maint_cplus_cmd_list, |
| 2164 | "maintenance cplus ", |
| 2165 | 0, &maintenancelist); |
| 2166 | add_alias_cmd ("cp", "cplus", |
| 2167 | class_maintenance, 1, |
| 2168 | &maintenancelist); |
| 2169 | |
| 2170 | add_cmd ("first_component", |
| 2171 | class_maintenance, |
| 2172 | first_component_command, |
| 2173 | _("Print the first class/namespace component of NAME."), |
| 2174 | &maint_cplus_cmd_list); |
| 2175 | |
| 2176 | add_info ("vtbl", info_vtbl_command, |
| 2177 | _("Show the virtual function table for a C++ object.\n\ |
| 2178 | Usage: info vtbl EXPRESSION\n\ |
| 2179 | Evaluate EXPRESSION and display the virtual function table for the\n\ |
| 2180 | resulting object.")); |
| 2181 | |
| 2182 | #ifdef HAVE_WORKING_FORK |
| 2183 | add_setshow_boolean_cmd ("catch-demangler-crashes", class_maintenance, |
| 2184 | &catch_demangler_crashes, _("\ |
| 2185 | Set whether to attempt to catch demangler crashes."), _("\ |
| 2186 | Show whether to attempt to catch demangler crashes."), _("\ |
| 2187 | If enabled GDB will attempt to catch demangler crashes and\n\ |
| 2188 | display the offending symbol."), |
| 2189 | NULL, |
| 2190 | NULL, |
| 2191 | &maintenance_set_cmdlist, |
| 2192 | &maintenance_show_cmdlist); |
| 2193 | #endif |
| 2194 | |
| 2195 | #if GDB_SELF_TEST |
| 2196 | selftests::register_test ("cp_symbol_name_matches", |
| 2197 | selftests::test_cp_symbol_name_matches); |
| 2198 | selftests::register_test ("cp_remove_params", |
| 2199 | selftests::test_cp_remove_params); |
| 2200 | #endif |
| 2201 | } |