Commit | Line | Data |
---|---|---|
9219021c | 1 | /* Helper routines for C++ support in GDB. |
61baf725 | 2 | Copyright (C) 2003-2017 Free Software Foundation, Inc. |
9219021c | 3 | |
1fcb5155 | 4 | Contributed by David Carlton and by Kealia, Inc. |
9219021c DC |
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 |
9219021c DC |
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/>. */ |
9219021c DC |
20 | |
21 | #include "defs.h" | |
22 | #include "cp-support.h" | |
23 | #include "gdb_obstack.h" | |
24 | #include "symtab.h" | |
25 | #include "symfile.h" | |
9219021c | 26 | #include "block.h" |
5c4e30ca DC |
27 | #include "objfiles.h" |
28 | #include "gdbtypes.h" | |
29 | #include "dictionary.h" | |
30 | #include "command.h" | |
b368761e | 31 | #include "frame.h" |
27aa8d6a | 32 | #include "buildsym.h" |
34eaf542 | 33 | #include "language.h" |
22cee43f | 34 | #include "namespace.h" |
05d49c37 | 35 | #include <string> |
9219021c | 36 | |
d12307c1 | 37 | static struct block_symbol |
6f27419a DE |
38 | cp_lookup_nested_symbol_1 (struct type *container_type, |
39 | const char *nested_name, | |
40 | const char *concatenated_name, | |
41 | const struct block *block, | |
4dcabcc2 | 42 | const domain_enum domain, |
96553a0c | 43 | int basic_lookup, int is_in_anonymous); |
6f27419a | 44 | |
b368761e DC |
45 | static struct type *cp_lookup_transparent_type_loop (const char *name, |
46 | const char *scope, | |
47 | int scope_len); | |
48 | ||
9219021c DC |
49 | /* Check to see if SYMBOL refers to an object contained within an |
50 | anonymous namespace; if so, add an appropriate using directive. */ | |
51 | ||
9219021c | 52 | void |
a10964d1 AR |
53 | cp_scan_for_anonymous_namespaces (const struct symbol *const symbol, |
54 | struct objfile *const objfile) | |
9219021c | 55 | { |
df8a16a1 | 56 | if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) |
9219021c | 57 | { |
df8a16a1 | 58 | const char *name = SYMBOL_DEMANGLED_NAME (symbol); |
9219021c DC |
59 | unsigned int previous_component; |
60 | unsigned int next_component; | |
9219021c DC |
61 | |
62 | /* Start with a quick-and-dirty check for mention of "(anonymous | |
63 | namespace)". */ | |
64 | ||
59da4d04 | 65 | if (!cp_is_in_anonymous (name)) |
9219021c DC |
66 | return; |
67 | ||
68 | previous_component = 0; | |
69 | next_component = cp_find_first_component (name + previous_component); | |
70 | ||
71 | while (name[next_component] == ':') | |
72 | { | |
2b1dbab0 KS |
73 | if (((next_component - previous_component) |
74 | == CP_ANONYMOUS_NAMESPACE_LEN) | |
9219021c | 75 | && strncmp (name + previous_component, |
2b1dbab0 KS |
76 | CP_ANONYMOUS_NAMESPACE_STR, |
77 | CP_ANONYMOUS_NAMESPACE_LEN) == 0) | |
9219021c | 78 | { |
aff410f1 MS |
79 | int dest_len = (previous_component == 0 |
80 | ? 0 : previous_component - 2); | |
8c902bb1 | 81 | int src_len = next_component; |
794684b6 | 82 | |
224c3ddb SM |
83 | char *dest = (char *) alloca (dest_len + 1); |
84 | char *src = (char *) alloca (src_len + 1); | |
794684b6 | 85 | |
8c902bb1 SW |
86 | memcpy (dest, name, dest_len); |
87 | memcpy (src, name, src_len); | |
794684b6 | 88 | |
8c902bb1 SW |
89 | dest[dest_len] = '\0'; |
90 | src[src_len] = '\0'; | |
794684b6 | 91 | |
9219021c DC |
92 | /* We've found a component of the name that's an |
93 | anonymous namespace. So add symbols in it to the | |
94 | namespace given by the previous component if there is | |
95 | one, or to the global namespace if there isn't. */ | |
22cee43f PMR |
96 | add_using_directive (&local_using_directives, |
97 | dest, src, NULL, NULL, NULL, 1, | |
98 | &objfile->objfile_obstack); | |
9219021c DC |
99 | } |
100 | /* The "+ 2" is for the "::". */ | |
101 | previous_component = next_component + 2; | |
102 | next_component = (previous_component | |
103 | + cp_find_first_component (name | |
104 | + previous_component)); | |
105 | } | |
106 | } | |
107 | } | |
108 | ||
9219021c DC |
109 | /* Test whether or not NAMESPACE looks like it mentions an anonymous |
110 | namespace; return nonzero if so. */ | |
111 | ||
112 | int | |
59da4d04 | 113 | cp_is_in_anonymous (const char *symbol_name) |
9219021c | 114 | { |
59da4d04 | 115 | return (strstr (symbol_name, CP_ANONYMOUS_NAMESPACE_STR) |
9219021c DC |
116 | != NULL); |
117 | } | |
118 | ||
6f27419a | 119 | /* Look up NAME in DOMAIN in BLOCK's static block and in global blocks. |
d5ff0482 | 120 | If IS_IN_ANONYMOUS is nonzero, the symbol in question is located |
6f27419a | 121 | within an anonymous namespace. */ |
34ef8452 | 122 | |
d12307c1 | 123 | static struct block_symbol |
6f27419a | 124 | cp_basic_lookup_symbol (const char *name, const struct block *block, |
d5ff0482 | 125 | const domain_enum domain, int is_in_anonymous) |
34ef8452 | 126 | { |
d12307c1 | 127 | struct block_symbol sym; |
34ef8452 DE |
128 | |
129 | sym = lookup_symbol_in_static_block (name, block, domain); | |
d12307c1 | 130 | if (sym.symbol != NULL) |
34ef8452 DE |
131 | return sym; |
132 | ||
d5ff0482 | 133 | if (is_in_anonymous) |
34ef8452 DE |
134 | { |
135 | /* Symbols defined in anonymous namespaces have external linkage | |
136 | but should be treated as local to a single file nonetheless. | |
137 | So we only search the current file's global block. */ | |
138 | ||
139 | const struct block *global_block = block_global_block (block); | |
791244be | 140 | |
34ef8452 | 141 | if (global_block != NULL) |
d12307c1 PMR |
142 | { |
143 | sym.symbol = lookup_symbol_in_block (name, global_block, domain); | |
144 | sym.block = global_block; | |
145 | } | |
34ef8452 DE |
146 | } |
147 | else | |
d12307c1 | 148 | sym = lookup_global_symbol (name, block, domain); |
34ef8452 | 149 | |
6f27419a DE |
150 | return sym; |
151 | } | |
152 | ||
153 | /* Search bare symbol NAME in DOMAIN in BLOCK. | |
1994afbf DE |
154 | NAME is guaranteed to not have any scope (no "::") in its name, though |
155 | if for example NAME is a template spec then "::" may appear in the | |
156 | argument list. | |
157 | If LANGDEF is non-NULL then try to lookup NAME as a primitive type in | |
158 | that language. Normally we wouldn't need LANGDEF but fortran also uses | |
159 | this code. | |
6f27419a DE |
160 | If SEARCH is non-zero then see if we can determine "this" from BLOCK, and |
161 | if so then also search for NAME in that class. */ | |
162 | ||
d12307c1 | 163 | static struct block_symbol |
1994afbf DE |
164 | cp_lookup_bare_symbol (const struct language_defn *langdef, |
165 | const char *name, const struct block *block, | |
6f27419a DE |
166 | const domain_enum domain, int search) |
167 | { | |
d12307c1 | 168 | struct block_symbol sym; |
6f27419a DE |
169 | |
170 | /* Note: We can't do a simple assert for ':' not being in NAME because | |
171 | ':' may be in the args of a template spec. This isn't intended to be | |
172 | a complete test, just cheap and documentary. */ | |
173 | if (strchr (name, '<') == NULL && strchr (name, '(') == NULL) | |
1cafadb4 | 174 | gdb_assert (strstr (name, "::") == NULL); |
6f27419a DE |
175 | |
176 | sym = lookup_symbol_in_static_block (name, block, domain); | |
d12307c1 | 177 | if (sym.symbol != NULL) |
6f27419a DE |
178 | return sym; |
179 | ||
1994afbf DE |
180 | /* If we didn't find a definition for a builtin type in the static block, |
181 | search for it now. This is actually the right thing to do and can be | |
182 | a massive performance win. E.g., when debugging a program with lots of | |
183 | shared libraries we could search all of them only to find out the | |
184 | builtin type isn't defined in any of them. This is common for types | |
185 | like "void". */ | |
186 | if (langdef != NULL && domain == VAR_DOMAIN) | |
187 | { | |
188 | struct gdbarch *gdbarch; | |
189 | ||
190 | if (block == NULL) | |
191 | gdbarch = target_gdbarch (); | |
192 | else | |
193 | gdbarch = block_gdbarch (block); | |
d12307c1 PMR |
194 | sym.symbol |
195 | = language_lookup_primitive_type_as_symbol (langdef, gdbarch, name); | |
196 | sym.block = NULL; | |
197 | if (sym.symbol != NULL) | |
1994afbf DE |
198 | return sym; |
199 | } | |
200 | ||
6f27419a | 201 | sym = lookup_global_symbol (name, block, domain); |
d12307c1 | 202 | if (sym.symbol != NULL) |
34ef8452 DE |
203 | return sym; |
204 | ||
205 | if (search) | |
206 | { | |
d12307c1 | 207 | struct block_symbol lang_this; |
6f27419a | 208 | struct type *type; |
34ef8452 | 209 | |
41c977aa WT |
210 | lang_this.symbol = NULL; |
211 | ||
4f19a0e6 WT |
212 | if (langdef != NULL) |
213 | lang_this = lookup_language_this (langdef, block); | |
214 | ||
d12307c1 | 215 | if (lang_this.symbol == NULL) |
b6b80672 | 216 | return null_block_symbol; |
34ef8452 | 217 | |
4f19a0e6 | 218 | |
d12307c1 | 219 | type = check_typedef (TYPE_TARGET_TYPE (SYMBOL_TYPE (lang_this.symbol))); |
6f27419a DE |
220 | /* If TYPE_NAME is NULL, abandon trying to find this symbol. |
221 | This can happen for lambda functions compiled with clang++, | |
222 | which outputs no name for the container class. */ | |
223 | if (TYPE_NAME (type) == NULL) | |
b6b80672 | 224 | return null_block_symbol; |
34ef8452 | 225 | |
d5ff0482 | 226 | /* Look for symbol NAME in this class. */ |
4dcabcc2 | 227 | sym = cp_lookup_nested_symbol (type, name, block, domain); |
6f27419a | 228 | } |
34ef8452 | 229 | |
6f27419a DE |
230 | return sym; |
231 | } | |
34ef8452 | 232 | |
6f27419a DE |
233 | /* Search NAME in DOMAIN in all static blocks, and then in all baseclasses. |
234 | BLOCK specifies the context in which to perform the search. | |
235 | NAME is guaranteed to have scope (contain "::") and PREFIX_LEN specifies | |
d5ff0482 | 236 | the length of the entire scope of NAME (up to, but not including, the last |
6f27419a | 237 | "::". |
34ef8452 | 238 | |
6f27419a DE |
239 | Note: At least in the case of Fortran, which also uses this code, there |
240 | may be no text after the last "::". */ | |
34ef8452 | 241 | |
d12307c1 | 242 | static struct block_symbol |
6f27419a DE |
243 | cp_search_static_and_baseclasses (const char *name, |
244 | const struct block *block, | |
245 | const domain_enum domain, | |
96553a0c DE |
246 | unsigned int prefix_len, |
247 | int is_in_anonymous) | |
6f27419a | 248 | { |
1cafadb4 DB |
249 | /* Check for malformed input. */ |
250 | if (prefix_len + 2 > strlen (name) || name[prefix_len + 1] != ':') | |
251 | return null_block_symbol; | |
34ef8452 | 252 | |
e68cb8e0 PA |
253 | /* The class, namespace or function name is everything up to and |
254 | including PREFIX_LEN. */ | |
255 | std::string scope (name, prefix_len); | |
6f27419a DE |
256 | |
257 | /* The rest of the name is everything else past the initial scope | |
258 | operator. */ | |
e68cb8e0 PA |
259 | const char *nested = name + prefix_len + 2; |
260 | ||
261 | /* Lookup the scope symbol. If none is found, there is nothing more | |
262 | that can be done. SCOPE could be a namespace, so always look in | |
263 | VAR_DOMAIN. This works for classes too because of | |
264 | symbol_matches_domain (which should be replaced with something | |
265 | else, but it's what we have today). */ | |
266 | block_symbol scope_sym = lookup_symbol_in_static_block (scope.c_str (), | |
267 | block, VAR_DOMAIN); | |
268 | if (scope_sym.symbol == NULL) | |
269 | scope_sym = lookup_global_symbol (scope.c_str (), block, VAR_DOMAIN); | |
270 | if (scope_sym.symbol == NULL) | |
05d49c37 | 271 | return null_block_symbol; |
6f27419a | 272 | |
e68cb8e0 PA |
273 | struct type *scope_type = SYMBOL_TYPE (scope_sym.symbol); |
274 | ||
275 | /* If the scope is a function/method, then look up NESTED as a local | |
276 | static variable. E.g., "print 'function()::static_var'". */ | |
277 | if (TYPE_CODE (scope_type) == TYPE_CODE_FUNC | |
278 | || TYPE_CODE (scope_type) == TYPE_CODE_METHOD) | |
279 | return lookup_symbol (nested, SYMBOL_BLOCK_VALUE (scope_sym.symbol), | |
280 | VAR_DOMAIN, NULL); | |
281 | ||
282 | /* Look for a symbol named NESTED in this class/namespace. | |
6f27419a DE |
283 | The caller is assumed to have already have done a basic lookup of NAME. |
284 | So we pass zero for BASIC_LOOKUP to cp_lookup_nested_symbol_1 here. */ | |
e68cb8e0 PA |
285 | return cp_lookup_nested_symbol_1 (scope_type, nested, name, |
286 | block, domain, 0, is_in_anonymous); | |
34ef8452 DE |
287 | } |
288 | ||
aff410f1 | 289 | /* Look up NAME in the C++ namespace NAMESPACE. Other arguments are |
8dea366b | 290 | as in cp_lookup_symbol_nonlocal. If SEARCH is non-zero, search |
6f27419a DE |
291 | through base classes for a matching symbol. |
292 | ||
293 | Note: Part of the complexity is because NAME may itself specify scope. | |
294 | Part of the complexity is also because this handles the case where | |
295 | there is no scoping in which case we also try looking in the class of | |
296 | "this" if we can compute it. */ | |
8540c487 | 297 | |
d12307c1 | 298 | static struct block_symbol |
fe978cb0 | 299 | cp_lookup_symbol_in_namespace (const char *the_namespace, const char *name, |
6f27419a DE |
300 | const struct block *block, |
301 | const domain_enum domain, int search) | |
8540c487 | 302 | { |
d2763117 | 303 | char *concatenated_name = NULL; |
6f27419a DE |
304 | int is_in_anonymous; |
305 | unsigned int prefix_len; | |
d12307c1 | 306 | struct block_symbol sym; |
c5504eaf | 307 | |
fe978cb0 | 308 | if (the_namespace[0] != '\0') |
d2763117 | 309 | { |
224c3ddb SM |
310 | concatenated_name |
311 | = (char *) alloca (strlen (the_namespace) + 2 + strlen (name) + 1); | |
fe978cb0 | 312 | strcpy (concatenated_name, the_namespace); |
8540c487 SW |
313 | strcat (concatenated_name, "::"); |
314 | strcat (concatenated_name, name); | |
d2763117 | 315 | name = concatenated_name; |
8540c487 | 316 | } |
d2763117 | 317 | |
6f27419a DE |
318 | prefix_len = cp_entire_prefix_len (name); |
319 | if (prefix_len == 0) | |
1994afbf | 320 | return cp_lookup_bare_symbol (NULL, name, block, domain, search); |
6f27419a DE |
321 | |
322 | /* This would be simpler if we just called cp_lookup_nested_symbol | |
323 | at this point. But that would require first looking up the containing | |
324 | class/namespace. Since we're only searching static and global blocks | |
325 | there's often no need to first do that lookup. */ | |
326 | ||
fe978cb0 PA |
327 | is_in_anonymous |
328 | = the_namespace[0] != '\0' && cp_is_in_anonymous (the_namespace); | |
6f27419a | 329 | sym = cp_basic_lookup_symbol (name, block, domain, is_in_anonymous); |
d12307c1 | 330 | if (sym.symbol != NULL) |
6f27419a DE |
331 | return sym; |
332 | ||
333 | if (search) | |
96553a0c DE |
334 | sym = cp_search_static_and_baseclasses (name, block, domain, prefix_len, |
335 | is_in_anonymous); | |
6f27419a DE |
336 | |
337 | return sym; | |
8540c487 SW |
338 | } |
339 | ||
d5ff0482 | 340 | /* Used for cleanups to reset the "searched" flag in case of an error. */ |
b14e635e SW |
341 | |
342 | static void | |
343 | reset_directive_searched (void *data) | |
344 | { | |
9a3c8263 | 345 | struct using_direct *direct = (struct using_direct *) data; |
b14e635e SW |
346 | direct->searched = 0; |
347 | } | |
348 | ||
aff410f1 MS |
349 | /* Search for NAME by applying all import statements belonging to |
350 | BLOCK which are applicable in SCOPE. If DECLARATION_ONLY the | |
351 | search is restricted to using declarations. | |
13387711 SW |
352 | Example: |
353 | ||
aff410f1 | 354 | namespace A { |
13387711 SW |
355 | int x; |
356 | } | |
357 | using A::x; | |
358 | ||
aff410f1 MS |
359 | If SEARCH_PARENTS the search will include imports which are |
360 | applicable in parents of SCOPE. | |
b14e635e SW |
361 | Example: |
362 | ||
aff410f1 | 363 | namespace A { |
b14e635e | 364 | using namespace X; |
aff410f1 | 365 | namespace B { |
b14e635e SW |
366 | using namespace Y; |
367 | } | |
368 | } | |
369 | ||
aff410f1 MS |
370 | If SCOPE is "A::B" and SEARCH_PARENTS is true the imports of |
371 | namespaces X and Y will be considered. If SEARCH_PARENTS is false | |
4bd0864e DE |
372 | only the import of Y is considered. |
373 | ||
374 | SEARCH_SCOPE_FIRST is an internal implementation detail: Callers must | |
375 | pass 0 for it. Internally we pass 1 when recursing. */ | |
8540c487 | 376 | |
d12307c1 | 377 | static struct block_symbol |
55accf4a DE |
378 | cp_lookup_symbol_via_imports (const char *scope, |
379 | const char *name, | |
380 | const struct block *block, | |
381 | const domain_enum domain, | |
4bd0864e | 382 | const int search_scope_first, |
55accf4a DE |
383 | const int declaration_only, |
384 | const int search_parents) | |
8540c487 | 385 | { |
b14e635e | 386 | struct using_direct *current; |
d12307c1 | 387 | struct block_symbol sym; |
8540c487 | 388 | int len; |
b14e635e SW |
389 | int directive_match; |
390 | struct cleanup *searched_cleanup; | |
8540c487 | 391 | |
d12307c1 | 392 | sym.symbol = NULL; |
1da03605 | 393 | sym.block = NULL; |
d12307c1 | 394 | |
4bd0864e DE |
395 | /* First, try to find the symbol in the given namespace if requested. */ |
396 | if (search_scope_first) | |
aff410f1 | 397 | sym = cp_lookup_symbol_in_namespace (scope, name, |
8dea366b | 398 | block, domain, 1); |
791244be | 399 | |
d12307c1 | 400 | if (sym.symbol != NULL) |
8540c487 SW |
401 | return sym; |
402 | ||
aff410f1 MS |
403 | /* Go through the using directives. If any of them add new names to |
404 | the namespace we're searching in, see if we can find a match by | |
405 | applying them. */ | |
8540c487 SW |
406 | |
407 | for (current = block_using (block); | |
408 | current != NULL; | |
409 | current = current->next) | |
410 | { | |
32019081 JK |
411 | const char **excludep; |
412 | ||
b14e635e SW |
413 | len = strlen (current->import_dest); |
414 | directive_match = (search_parents | |
61012eef | 415 | ? (startswith (scope, current->import_dest) |
b14e635e | 416 | && (len == 0 |
aff410f1 MS |
417 | || scope[len] == ':' |
418 | || scope[len] == '\0')) | |
b14e635e | 419 | : strcmp (scope, current->import_dest) == 0); |
8540c487 | 420 | |
aff410f1 MS |
421 | /* If the import destination is the current scope or one of its |
422 | ancestors then it is applicable. */ | |
b14e635e | 423 | if (directive_match && !current->searched) |
8540c487 | 424 | { |
a1d705ee TT |
425 | /* Mark this import as searched so that the recursive call |
426 | does not search it again. */ | |
427 | current->searched = 1; | |
428 | searched_cleanup = make_cleanup (reset_directive_searched, | |
429 | current); | |
430 | ||
431 | /* If there is an import of a single declaration, compare the | |
432 | imported declaration (after optional renaming by its alias) | |
433 | with the sought out name. If there is a match pass | |
434 | current->import_src as NAMESPACE to direct the search | |
435 | towards the imported namespace. */ | |
436 | if (current->declaration | |
437 | && strcmp (name, current->alias | |
438 | ? current->alias : current->declaration) == 0) | |
439 | sym = cp_lookup_symbol_in_namespace (current->import_src, | |
440 | current->declaration, | |
8dea366b | 441 | block, domain, 1); |
a1d705ee TT |
442 | |
443 | /* If this is a DECLARATION_ONLY search or a symbol was found | |
444 | or this import statement was an import declaration, the | |
445 | search of this import is complete. */ | |
d12307c1 | 446 | if (declaration_only || sym.symbol != NULL || current->declaration) |
a1d705ee TT |
447 | { |
448 | current->searched = 0; | |
449 | discard_cleanups (searched_cleanup); | |
450 | ||
d12307c1 | 451 | if (sym.symbol != NULL) |
a1d705ee TT |
452 | return sym; |
453 | ||
454 | continue; | |
455 | } | |
456 | ||
457 | /* Do not follow CURRENT if NAME matches its EXCLUDES. */ | |
458 | for (excludep = current->excludes; *excludep; excludep++) | |
459 | if (strcmp (name, *excludep) == 0) | |
460 | break; | |
461 | if (*excludep) | |
462 | { | |
463 | discard_cleanups (searched_cleanup); | |
464 | continue; | |
465 | } | |
466 | ||
467 | if (current->alias != NULL | |
468 | && strcmp (name, current->alias) == 0) | |
469 | /* If the import is creating an alias and the alias matches | |
470 | the sought name. Pass current->import_src as the NAME to | |
471 | direct the search towards the aliased namespace. */ | |
472 | { | |
473 | sym = cp_lookup_symbol_in_namespace (scope, | |
474 | current->import_src, | |
8dea366b | 475 | block, domain, 1); |
a1d705ee TT |
476 | } |
477 | else if (current->alias == NULL) | |
478 | { | |
479 | /* If this import statement creates no alias, pass | |
480 | current->inner as NAMESPACE to direct the search | |
481 | towards the imported namespace. */ | |
55accf4a DE |
482 | sym = cp_lookup_symbol_via_imports (current->import_src, |
483 | name, block, | |
4bd0864e | 484 | domain, 1, 0, 0); |
a1d705ee TT |
485 | } |
486 | current->searched = 0; | |
487 | discard_cleanups (searched_cleanup); | |
488 | ||
d12307c1 | 489 | if (sym.symbol != NULL) |
a1d705ee | 490 | return sym; |
8540c487 SW |
491 | } |
492 | } | |
493 | ||
b6b80672 | 494 | return null_block_symbol; |
8540c487 SW |
495 | } |
496 | ||
d5ff0482 | 497 | /* Helper function that searches an array of symbols for one named NAME. */ |
34eaf542 TT |
498 | |
499 | static struct symbol * | |
aff410f1 MS |
500 | search_symbol_list (const char *name, int num, |
501 | struct symbol **syms) | |
34eaf542 TT |
502 | { |
503 | int i; | |
504 | ||
505 | /* Maybe we should store a dictionary in here instead. */ | |
506 | for (i = 0; i < num; ++i) | |
507 | { | |
508 | if (strcmp (name, SYMBOL_NATURAL_NAME (syms[i])) == 0) | |
509 | return syms[i]; | |
510 | } | |
511 | return NULL; | |
512 | } | |
513 | ||
55accf4a | 514 | /* Like cp_lookup_symbol_via_imports, but if BLOCK is a function, it |
34eaf542 TT |
515 | searches through the template parameters of the function and the |
516 | function's type. */ | |
517 | ||
d12307c1 | 518 | struct block_symbol |
34eaf542 TT |
519 | cp_lookup_symbol_imports_or_template (const char *scope, |
520 | const char *name, | |
521 | const struct block *block, | |
522 | const domain_enum domain) | |
523 | { | |
524 | struct symbol *function = BLOCK_FUNCTION (block); | |
d12307c1 | 525 | struct block_symbol result; |
cc485e62 DE |
526 | |
527 | if (symbol_lookup_debug) | |
528 | { | |
529 | fprintf_unfiltered (gdb_stdlog, | |
530 | "cp_lookup_symbol_imports_or_template" | |
531 | " (%s, %s, %s, %s)\n", | |
532 | scope, name, host_address_to_string (block), | |
533 | domain_name (domain)); | |
534 | } | |
34eaf542 TT |
535 | |
536 | if (function != NULL && SYMBOL_LANGUAGE (function) == language_cplus) | |
537 | { | |
34eaf542 TT |
538 | /* Search the function's template parameters. */ |
539 | if (SYMBOL_IS_CPLUS_TEMPLATE_FUNCTION (function)) | |
540 | { | |
791244be | 541 | struct template_symbol *templ |
aff410f1 | 542 | = (struct template_symbol *) function; |
d12307c1 PMR |
543 | struct symbol *sym = search_symbol_list (name, |
544 | templ->n_template_arguments, | |
545 | templ->template_arguments); | |
34eaf542 | 546 | |
d12307c1 | 547 | if (sym != NULL) |
cc485e62 DE |
548 | { |
549 | if (symbol_lookup_debug) | |
550 | { | |
551 | fprintf_unfiltered (gdb_stdlog, | |
552 | "cp_lookup_symbol_imports_or_template" | |
553 | " (...) = %s\n", | |
d12307c1 | 554 | host_address_to_string (sym)); |
cc485e62 | 555 | } |
d12307c1 | 556 | return (struct block_symbol) {sym, block}; |
cc485e62 | 557 | } |
34eaf542 TT |
558 | } |
559 | ||
560 | /* Search the template parameters of the function's defining | |
561 | context. */ | |
562 | if (SYMBOL_NATURAL_NAME (function)) | |
563 | { | |
564 | struct type *context; | |
05d49c37 | 565 | std::string name_copy (SYMBOL_NATURAL_NAME (function)); |
34eaf542 | 566 | const struct language_defn *lang = language_def (language_cplus); |
08be3fe3 | 567 | struct gdbarch *arch = symbol_arch (function); |
34eaf542 | 568 | const struct block *parent = BLOCK_SUPERBLOCK (block); |
d12307c1 | 569 | struct symbol *sym; |
34eaf542 TT |
570 | |
571 | while (1) | |
572 | { | |
05d49c37 TT |
573 | unsigned int prefix_len |
574 | = cp_entire_prefix_len (name_copy.c_str ()); | |
34eaf542 TT |
575 | |
576 | if (prefix_len == 0) | |
577 | context = NULL; | |
578 | else | |
579 | { | |
05d49c37 | 580 | name_copy.erase (prefix_len); |
aff410f1 | 581 | context = lookup_typename (lang, arch, |
05d49c37 | 582 | name_copy.c_str (), |
aff410f1 | 583 | parent, 1); |
34eaf542 TT |
584 | } |
585 | ||
586 | if (context == NULL) | |
587 | break; | |
588 | ||
d12307c1 | 589 | sym |
aff410f1 MS |
590 | = search_symbol_list (name, |
591 | TYPE_N_TEMPLATE_ARGUMENTS (context), | |
592 | TYPE_TEMPLATE_ARGUMENTS (context)); | |
d12307c1 | 593 | if (sym != NULL) |
c27e16e3 | 594 | { |
cc485e62 DE |
595 | if (symbol_lookup_debug) |
596 | { | |
d12307c1 PMR |
597 | fprintf_unfiltered |
598 | (gdb_stdlog, | |
599 | "cp_lookup_symbol_imports_or_template (...) = %s\n", | |
600 | host_address_to_string (sym)); | |
cc485e62 | 601 | } |
d12307c1 | 602 | return (struct block_symbol) {sym, parent}; |
c27e16e3 | 603 | } |
34eaf542 | 604 | } |
34eaf542 TT |
605 | } |
606 | } | |
607 | ||
4bd0864e | 608 | result = cp_lookup_symbol_via_imports (scope, name, block, domain, 0, 1, 1); |
cc485e62 DE |
609 | if (symbol_lookup_debug) |
610 | { | |
611 | fprintf_unfiltered (gdb_stdlog, | |
612 | "cp_lookup_symbol_imports_or_template (...) = %s\n", | |
d12307c1 PMR |
613 | result.symbol != NULL |
614 | ? host_address_to_string (result.symbol) : "NULL"); | |
cc485e62 DE |
615 | } |
616 | return result; | |
34eaf542 TT |
617 | } |
618 | ||
f953163f DE |
619 | /* Search for NAME by applying relevant import statements belonging to BLOCK |
620 | and its parents. SCOPE is the namespace scope of the context in which the | |
621 | search is being evaluated. */ | |
622 | ||
d12307c1 | 623 | static struct block_symbol |
f953163f DE |
624 | cp_lookup_symbol_via_all_imports (const char *scope, const char *name, |
625 | const struct block *block, | |
626 | const domain_enum domain) | |
627 | { | |
d12307c1 | 628 | struct block_symbol sym; |
f953163f DE |
629 | |
630 | while (block != NULL) | |
631 | { | |
632 | sym = cp_lookup_symbol_via_imports (scope, name, block, domain, 0, 0, 1); | |
d12307c1 | 633 | if (sym.symbol) |
f953163f DE |
634 | return sym; |
635 | ||
636 | block = BLOCK_SUPERBLOCK (block); | |
637 | } | |
638 | ||
b6b80672 | 639 | return null_block_symbol; |
f953163f DE |
640 | } |
641 | ||
791244be DE |
642 | /* Searches for NAME in the current namespace, and by applying |
643 | relevant import statements belonging to BLOCK and its parents. | |
644 | SCOPE is the namespace scope of the context in which the search is | |
645 | being evaluated. */ | |
8540c487 | 646 | |
d12307c1 | 647 | struct block_symbol |
8540c487 SW |
648 | cp_lookup_symbol_namespace (const char *scope, |
649 | const char *name, | |
8540c487 | 650 | const struct block *block, |
13387711 | 651 | const domain_enum domain) |
8540c487 | 652 | { |
d12307c1 | 653 | struct block_symbol sym; |
cc485e62 DE |
654 | |
655 | if (symbol_lookup_debug) | |
656 | { | |
657 | fprintf_unfiltered (gdb_stdlog, | |
658 | "cp_lookup_symbol_namespace (%s, %s, %s, %s)\n", | |
659 | scope, name, host_address_to_string (block), | |
660 | domain_name (domain)); | |
661 | } | |
662 | ||
13387711 | 663 | /* First, try to find the symbol in the given namespace. */ |
f953163f | 664 | sym = cp_lookup_symbol_in_namespace (scope, name, block, domain, 1); |
8540c487 | 665 | |
f953163f | 666 | /* Search for name in namespaces imported to this and parent blocks. */ |
d12307c1 | 667 | if (sym.symbol == NULL) |
f953163f | 668 | sym = cp_lookup_symbol_via_all_imports (scope, name, block, domain); |
8540c487 | 669 | |
cc485e62 DE |
670 | if (symbol_lookup_debug) |
671 | { | |
672 | fprintf_unfiltered (gdb_stdlog, | |
f953163f | 673 | "cp_lookup_symbol_namespace (...) = %s\n", |
d12307c1 PMR |
674 | sym.symbol != NULL |
675 | ? host_address_to_string (sym.symbol) : "NULL"); | |
cc485e62 | 676 | } |
f953163f | 677 | return sym; |
1fcb5155 DC |
678 | } |
679 | ||
680 | /* Lookup NAME at namespace scope (or, in C terms, in static and | |
681 | global variables). SCOPE is the namespace that the current | |
682 | function is defined within; only consider namespaces whose length | |
683 | is at least SCOPE_LEN. Other arguments are as in | |
684 | cp_lookup_symbol_nonlocal. | |
685 | ||
686 | For example, if we're within a function A::B::f and looking for a | |
3882f37a | 687 | symbol x, this will get called with NAME = "x", SCOPE = "A::B", and |
1fcb5155 DC |
688 | SCOPE_LEN = 0. It then calls itself with NAME and SCOPE the same, |
689 | but with SCOPE_LEN = 1. And then it calls itself with NAME and | |
690 | SCOPE the same, but with SCOPE_LEN = 4. This third call looks for | |
691 | "A::B::x"; if it doesn't find it, then the second call looks for | |
692 | "A::x", and if that call fails, then the first call looks for | |
693 | "x". */ | |
694 | ||
d12307c1 | 695 | static struct block_symbol |
1994afbf DE |
696 | lookup_namespace_scope (const struct language_defn *langdef, |
697 | const char *name, | |
1fcb5155 DC |
698 | const struct block *block, |
699 | const domain_enum domain, | |
1fcb5155 DC |
700 | const char *scope, |
701 | int scope_len) | |
702 | { | |
fe978cb0 | 703 | char *the_namespace; |
1fcb5155 DC |
704 | |
705 | if (scope[scope_len] != '\0') | |
706 | { | |
707 | /* Recursively search for names in child namespaces first. */ | |
708 | ||
d12307c1 | 709 | struct block_symbol sym; |
1fcb5155 DC |
710 | int new_scope_len = scope_len; |
711 | ||
712 | /* If the current scope is followed by "::", skip past that. */ | |
713 | if (new_scope_len != 0) | |
714 | { | |
715 | gdb_assert (scope[new_scope_len] == ':'); | |
716 | new_scope_len += 2; | |
717 | } | |
718 | new_scope_len += cp_find_first_component (scope + new_scope_len); | |
1994afbf | 719 | sym = lookup_namespace_scope (langdef, name, block, domain, |
aff410f1 | 720 | scope, new_scope_len); |
d12307c1 | 721 | if (sym.symbol != NULL) |
1fcb5155 DC |
722 | return sym; |
723 | } | |
724 | ||
725 | /* Okay, we didn't find a match in our children, so look for the | |
1994afbf DE |
726 | name in the current namespace. |
727 | ||
728 | If we there is no scope and we know we have a bare symbol, then short | |
729 | circuit everything and call cp_lookup_bare_symbol directly. | |
730 | This isn't an optimization, rather it allows us to pass LANGDEF which | |
731 | is needed for primitive type lookup. The test doesn't have to be | |
732 | perfect: if NAME is a bare symbol that our test doesn't catch (e.g., a | |
733 | template symbol with "::" in the argument list) then | |
734 | cp_lookup_symbol_in_namespace will catch it. */ | |
735 | ||
736 | if (scope_len == 0 && strchr (name, ':') == NULL) | |
737 | return cp_lookup_bare_symbol (langdef, name, block, domain, 1); | |
1fcb5155 | 738 | |
224c3ddb | 739 | the_namespace = (char *) alloca (scope_len + 1); |
fe978cb0 PA |
740 | strncpy (the_namespace, scope, scope_len); |
741 | the_namespace[scope_len] = '\0'; | |
742 | return cp_lookup_symbol_in_namespace (the_namespace, name, | |
8dea366b | 743 | block, domain, 1); |
1fcb5155 DC |
744 | } |
745 | ||
56286edf DE |
746 | /* The C++-specific version of name lookup for static and global |
747 | names. This makes sure that names get looked for in all namespaces | |
748 | that are in scope. NAME is the natural name of the symbol that | |
749 | we're looking for, BLOCK is the block that we're searching within, | |
750 | DOMAIN says what kind of symbols we're looking for. */ | |
751 | ||
d12307c1 | 752 | struct block_symbol |
f606139a DE |
753 | cp_lookup_symbol_nonlocal (const struct language_defn *langdef, |
754 | const char *name, | |
56286edf DE |
755 | const struct block *block, |
756 | const domain_enum domain) | |
757 | { | |
d12307c1 | 758 | struct block_symbol sym; |
56286edf DE |
759 | const char *scope = block_scope (block); |
760 | ||
cc485e62 DE |
761 | if (symbol_lookup_debug) |
762 | { | |
763 | fprintf_unfiltered (gdb_stdlog, | |
764 | "cp_lookup_symbol_non_local" | |
765 | " (%s, %s (scope %s), %s)\n", | |
766 | name, host_address_to_string (block), scope, | |
767 | domain_name (domain)); | |
768 | } | |
769 | ||
f953163f DE |
770 | /* First, try to find the symbol in the given namespace, and all |
771 | containing namespaces. */ | |
1994afbf | 772 | sym = lookup_namespace_scope (langdef, name, block, domain, scope, 0); |
56286edf | 773 | |
f953163f | 774 | /* Search for name in namespaces imported to this and parent blocks. */ |
d12307c1 | 775 | if (sym.symbol == NULL) |
f953163f DE |
776 | sym = cp_lookup_symbol_via_all_imports (scope, name, block, domain); |
777 | ||
cc485e62 DE |
778 | if (symbol_lookup_debug) |
779 | { | |
780 | fprintf_unfiltered (gdb_stdlog, | |
781 | "cp_lookup_symbol_nonlocal (...) = %s\n", | |
d12307c1 PMR |
782 | (sym.symbol != NULL |
783 | ? host_address_to_string (sym.symbol) | |
784 | : "NULL")); | |
cc485e62 DE |
785 | } |
786 | return sym; | |
56286edf DE |
787 | } |
788 | ||
f7e3ecae KS |
789 | /* Search through the base classes of PARENT_TYPE for a base class |
790 | named NAME and return its type. If not found, return NULL. */ | |
791 | ||
792 | struct type * | |
a07e3e18 | 793 | cp_find_type_baseclass_by_name (struct type *parent_type, const char *name) |
f7e3ecae KS |
794 | { |
795 | int i; | |
796 | ||
f168693b | 797 | parent_type = check_typedef (parent_type); |
f7e3ecae KS |
798 | for (i = 0; i < TYPE_N_BASECLASSES (parent_type); ++i) |
799 | { | |
800 | struct type *type = check_typedef (TYPE_BASECLASS (parent_type, i)); | |
801 | const char *base_name = TYPE_BASECLASS_NAME (parent_type, i); | |
802 | ||
803 | if (base_name == NULL) | |
804 | continue; | |
805 | ||
806 | if (streq (base_name, name)) | |
807 | return type; | |
808 | ||
a07e3e18 | 809 | type = cp_find_type_baseclass_by_name (type, name); |
f7e3ecae KS |
810 | if (type != NULL) |
811 | return type; | |
812 | } | |
813 | ||
814 | return NULL; | |
815 | } | |
816 | ||
8dea366b KS |
817 | /* Search through the base classes of PARENT_TYPE for a symbol named |
818 | NAME in block BLOCK. */ | |
819 | ||
d12307c1 | 820 | static struct block_symbol |
8dea366b | 821 | find_symbol_in_baseclass (struct type *parent_type, const char *name, |
4dcabcc2 DE |
822 | const struct block *block, const domain_enum domain, |
823 | int is_in_anonymous) | |
8dea366b KS |
824 | { |
825 | int i; | |
d12307c1 | 826 | struct block_symbol sym; |
8dea366b | 827 | |
d12307c1 PMR |
828 | sym.symbol = NULL; |
829 | sym.block = NULL; | |
791244be | 830 | |
8dea366b KS |
831 | for (i = 0; i < TYPE_N_BASECLASSES (parent_type); ++i) |
832 | { | |
69fc87c2 | 833 | struct type *base_type = TYPE_BASECLASS (parent_type, i); |
8dea366b KS |
834 | const char *base_name = TYPE_BASECLASS_NAME (parent_type, i); |
835 | ||
836 | if (base_name == NULL) | |
837 | continue; | |
838 | ||
05d49c37 | 839 | std::string concatenated_name = std::string (base_name) + "::" + name; |
8dea366b | 840 | |
05d49c37 TT |
841 | sym = cp_lookup_nested_symbol_1 (base_type, name, |
842 | concatenated_name.c_str (), | |
4dcabcc2 | 843 | block, domain, 1, is_in_anonymous); |
d12307c1 | 844 | if (sym.symbol != NULL) |
69fc87c2 | 845 | break; |
8dea366b KS |
846 | } |
847 | ||
0c2e6019 | 848 | return sym; |
5c4e30ca DC |
849 | } |
850 | ||
4dcabcc2 DE |
851 | /* Helper function to look up NESTED_NAME in CONTAINER_TYPE and in DOMAIN |
852 | and within the context of BLOCK. | |
d5ff0482 | 853 | NESTED_NAME may have scope ("::"). |
6f27419a DE |
854 | CONTAINER_TYPE needn't have been "check_typedef'd" yet. |
855 | CONCATENATED_NAME is the fully scoped spelling of NESTED_NAME, it is | |
856 | passed as an argument so that callers can control how space for it is | |
857 | allocated. | |
858 | If BASIC_LOOKUP is non-zero then perform a basic lookup of | |
96553a0c DE |
859 | CONCATENATED_NAME. See cp_basic_lookup_symbol for details. |
860 | If IS_IN_ANONYMOUS is non-zero then CONCATENATED_NAME is in an anonymous | |
861 | namespace. */ | |
6f27419a | 862 | |
d12307c1 | 863 | static struct block_symbol |
6f27419a DE |
864 | cp_lookup_nested_symbol_1 (struct type *container_type, |
865 | const char *nested_name, | |
866 | const char *concatenated_name, | |
867 | const struct block *block, | |
4dcabcc2 | 868 | const domain_enum domain, |
96553a0c | 869 | int basic_lookup, int is_in_anonymous) |
6f27419a | 870 | { |
d12307c1 | 871 | struct block_symbol sym; |
6f27419a DE |
872 | |
873 | /* NOTE: carlton/2003-11-10: We don't treat C++ class members | |
874 | of classes like, say, data or function members. Instead, | |
875 | they're just represented by symbols whose names are | |
876 | qualified by the name of the surrounding class. This is | |
877 | just like members of namespaces; in particular, | |
878 | cp_basic_lookup_symbol works when looking them up. */ | |
879 | ||
880 | if (basic_lookup) | |
881 | { | |
4dcabcc2 | 882 | sym = cp_basic_lookup_symbol (concatenated_name, block, domain, |
6f27419a | 883 | is_in_anonymous); |
d12307c1 | 884 | if (sym.symbol != NULL) |
6f27419a DE |
885 | return sym; |
886 | } | |
887 | ||
888 | /* Now search all static file-level symbols. We have to do this for things | |
889 | like typedefs in the class. We do not try to guess any imported | |
890 | namespace as even the fully specified namespace search is already not | |
891 | C++ compliant and more assumptions could make it too magic. */ | |
892 | ||
893 | /* First search in this symtab, what we want is possibly there. */ | |
4dcabcc2 | 894 | sym = lookup_symbol_in_static_block (concatenated_name, block, domain); |
d12307c1 | 895 | if (sym.symbol != NULL) |
6f27419a DE |
896 | return sym; |
897 | ||
898 | /* Nope. We now have to search all static blocks in all objfiles, | |
899 | even if block != NULL, because there's no guarantees as to which | |
96553a0c DE |
900 | symtab the symbol we want is in. Except for symbols defined in |
901 | anonymous namespaces should be treated as local to a single file, | |
902 | which we just searched. */ | |
903 | if (!is_in_anonymous) | |
904 | { | |
4dcabcc2 | 905 | sym = lookup_static_symbol (concatenated_name, domain); |
d12307c1 | 906 | if (sym.symbol != NULL) |
96553a0c DE |
907 | return sym; |
908 | } | |
6f27419a DE |
909 | |
910 | /* If this is a class with baseclasses, search them next. */ | |
f168693b | 911 | container_type = check_typedef (container_type); |
6f27419a DE |
912 | if (TYPE_N_BASECLASSES (container_type) > 0) |
913 | { | |
96553a0c | 914 | sym = find_symbol_in_baseclass (container_type, nested_name, block, |
4dcabcc2 | 915 | domain, is_in_anonymous); |
d12307c1 | 916 | if (sym.symbol != NULL) |
6f27419a DE |
917 | return sym; |
918 | } | |
919 | ||
b6b80672 | 920 | return null_block_symbol; |
6f27419a DE |
921 | } |
922 | ||
50af5481 | 923 | /* Look up a symbol named NESTED_NAME that is nested inside the C++ |
79c2c32d | 924 | class or namespace given by PARENT_TYPE, from within the context |
4dcabcc2 DE |
925 | given by BLOCK, and in DOMAIN. |
926 | Return NULL if there is no such nested symbol. */ | |
79c2c32d | 927 | |
d12307c1 | 928 | struct block_symbol |
50af5481 JK |
929 | cp_lookup_nested_symbol (struct type *parent_type, |
930 | const char *nested_name, | |
4dcabcc2 DE |
931 | const struct block *block, |
932 | const domain_enum domain) | |
79c2c32d | 933 | { |
05a6c3c8 | 934 | /* type_name_no_tag_or_error provides better error reporting using the |
d8228535 JK |
935 | original type. */ |
936 | struct type *saved_parent_type = parent_type; | |
937 | ||
f168693b | 938 | parent_type = check_typedef (parent_type); |
d8228535 | 939 | |
cc485e62 DE |
940 | if (symbol_lookup_debug) |
941 | { | |
942 | const char *type_name = type_name_no_tag (saved_parent_type); | |
943 | ||
944 | fprintf_unfiltered (gdb_stdlog, | |
4dcabcc2 | 945 | "cp_lookup_nested_symbol (%s, %s, %s, %s)\n", |
cc485e62 | 946 | type_name != NULL ? type_name : "unnamed", |
4dcabcc2 DE |
947 | nested_name, host_address_to_string (block), |
948 | domain_name (domain)); | |
cc485e62 DE |
949 | } |
950 | ||
79c2c32d DC |
951 | switch (TYPE_CODE (parent_type)) |
952 | { | |
63d06c5c | 953 | case TYPE_CODE_STRUCT: |
79c2c32d | 954 | case TYPE_CODE_NAMESPACE: |
48e32051 | 955 | case TYPE_CODE_UNION: |
3d567982 | 956 | case TYPE_CODE_ENUM: |
530e8392 KB |
957 | /* NOTE: Handle modules here as well, because Fortran is re-using the C++ |
958 | specific code to lookup nested symbols in modules, by calling the | |
959 | function pointer la_lookup_symbol_nonlocal, which ends up here. */ | |
960 | case TYPE_CODE_MODULE: | |
79c2c32d | 961 | { |
08850b56 | 962 | int size; |
d8228535 | 963 | const char *parent_name = type_name_no_tag_or_error (saved_parent_type); |
d12307c1 | 964 | struct block_symbol sym; |
41f62f39 | 965 | char *concatenated_name; |
96553a0c | 966 | int is_in_anonymous; |
c5504eaf | 967 | |
08850b56 | 968 | size = strlen (parent_name) + 2 + strlen (nested_name) + 1; |
224c3ddb | 969 | concatenated_name = (char *) alloca (size); |
08850b56 | 970 | xsnprintf (concatenated_name, size, "%s::%s", |
6f27419a | 971 | parent_name, nested_name); |
96553a0c | 972 | is_in_anonymous = cp_is_in_anonymous (concatenated_name); |
6f27419a DE |
973 | |
974 | sym = cp_lookup_nested_symbol_1 (parent_type, nested_name, | |
4dcabcc2 DE |
975 | concatenated_name, block, domain, |
976 | 1, is_in_anonymous); | |
41f62f39 | 977 | |
cc485e62 DE |
978 | if (symbol_lookup_debug) |
979 | { | |
980 | fprintf_unfiltered (gdb_stdlog, | |
981 | "cp_lookup_nested_symbol (...) = %s\n", | |
d12307c1 PMR |
982 | (sym.symbol != NULL |
983 | ? host_address_to_string (sym.symbol) | |
984 | : "NULL")); | |
cc485e62 DE |
985 | } |
986 | return sym; | |
79c2c32d | 987 | } |
bb869963 SDJ |
988 | |
989 | case TYPE_CODE_FUNC: | |
990 | case TYPE_CODE_METHOD: | |
cc485e62 DE |
991 | if (symbol_lookup_debug) |
992 | { | |
993 | fprintf_unfiltered (gdb_stdlog, | |
994 | "cp_lookup_nested_symbol (...) = NULL" | |
995 | " (func/method)\n"); | |
996 | } | |
b6b80672 | 997 | return null_block_symbol; |
bb869963 | 998 | |
79c2c32d DC |
999 | default: |
1000 | internal_error (__FILE__, __LINE__, | |
50af5481 | 1001 | _("cp_lookup_nested_symbol called " |
3e43a32a | 1002 | "on a non-aggregate type.")); |
79c2c32d DC |
1003 | } |
1004 | } | |
1005 | ||
b368761e DC |
1006 | /* The C++-version of lookup_transparent_type. */ |
1007 | ||
1008 | /* FIXME: carlton/2004-01-16: The problem that this is trying to | |
1009 | address is that, unfortunately, sometimes NAME is wrong: it may not | |
1010 | include the name of namespaces enclosing the type in question. | |
b021a221 | 1011 | lookup_transparent_type gets called when the type in question |
b368761e DC |
1012 | is a declaration, and we're trying to find its definition; but, for |
1013 | declarations, our type name deduction mechanism doesn't work. | |
1014 | There's nothing we can do to fix this in general, I think, in the | |
1015 | absence of debug information about namespaces (I've filed PR | |
1016 | gdb/1511 about this); until such debug information becomes more | |
1017 | prevalent, one heuristic which sometimes looks is to search for the | |
1018 | definition in namespaces containing the current namespace. | |
1019 | ||
1020 | We should delete this functions once the appropriate debug | |
1021 | information becomes more widespread. (GCC 3.4 will be the first | |
1022 | released version of GCC with such information.) */ | |
1023 | ||
1024 | struct type * | |
1025 | cp_lookup_transparent_type (const char *name) | |
1026 | { | |
1027 | /* First, try the honest way of looking up the definition. */ | |
1028 | struct type *t = basic_lookup_transparent_type (name); | |
1029 | const char *scope; | |
1030 | ||
1031 | if (t != NULL) | |
1032 | return t; | |
1033 | ||
1034 | /* If that doesn't work and we're within a namespace, look there | |
1035 | instead. */ | |
1036 | scope = block_scope (get_selected_block (0)); | |
1037 | ||
1038 | if (scope[0] == '\0') | |
1039 | return NULL; | |
1040 | ||
1041 | return cp_lookup_transparent_type_loop (name, scope, 0); | |
1042 | } | |
1043 | ||
b021a221 MS |
1044 | /* Lookup the type definition associated to NAME in namespaces/classes |
1045 | containing SCOPE whose name is strictly longer than LENGTH. LENGTH | |
1046 | must be the index of the start of a component of SCOPE. */ | |
b368761e DC |
1047 | |
1048 | static struct type * | |
aff410f1 MS |
1049 | cp_lookup_transparent_type_loop (const char *name, |
1050 | const char *scope, | |
b368761e DC |
1051 | int length) |
1052 | { | |
1198ecbe | 1053 | int scope_length = length + cp_find_first_component (scope + length); |
b368761e DC |
1054 | char *full_name; |
1055 | ||
1056 | /* If the current scope is followed by "::", look in the next | |
1057 | component. */ | |
1058 | if (scope[scope_length] == ':') | |
1059 | { | |
1060 | struct type *retval | |
aff410f1 MS |
1061 | = cp_lookup_transparent_type_loop (name, scope, |
1062 | scope_length + 2); | |
c5504eaf | 1063 | |
b368761e DC |
1064 | if (retval != NULL) |
1065 | return retval; | |
1066 | } | |
1067 | ||
224c3ddb | 1068 | full_name = (char *) alloca (scope_length + 2 + strlen (name) + 1); |
b368761e DC |
1069 | strncpy (full_name, scope, scope_length); |
1070 | strncpy (full_name + scope_length, "::", 2); | |
1071 | strcpy (full_name + scope_length + 2, name); | |
1072 | ||
1073 | return basic_lookup_transparent_type (full_name); | |
1074 | } | |
1075 | ||
0c2e6019 TT |
1076 | /* This used to do something but was removed when it became |
1077 | obsolete. */ | |
5c4e30ca DC |
1078 | |
1079 | static void | |
1080 | maintenance_cplus_namespace (char *args, int from_tty) | |
1081 | { | |
0c2e6019 | 1082 | printf_unfiltered (_("The `maint namespace' command was removed.\n")); |
5c4e30ca DC |
1083 | } |
1084 | ||
2c0b251b PA |
1085 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
1086 | extern initialize_file_ftype _initialize_cp_namespace; | |
1087 | ||
5c4e30ca DC |
1088 | void |
1089 | _initialize_cp_namespace (void) | |
1090 | { | |
0c2e6019 TT |
1091 | struct cmd_list_element *cmd; |
1092 | ||
1093 | cmd = add_cmd ("namespace", class_maintenance, | |
1094 | maintenance_cplus_namespace, | |
1095 | _("Deprecated placeholder for removed functionality."), | |
1096 | &maint_cplus_cmd_list); | |
1097 | deprecate_cmd (cmd, NULL); | |
1fcb5155 | 1098 | } |