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9219021c | 1 | /* Helper routines for C++ support in GDB. |
618f726f | 2 | Copyright (C) 2003-2016 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" |
9219021c | 35 | |
d12307c1 | 36 | static struct block_symbol |
6f27419a DE |
37 | cp_lookup_nested_symbol_1 (struct type *container_type, |
38 | const char *nested_name, | |
39 | const char *concatenated_name, | |
40 | const struct block *block, | |
4dcabcc2 | 41 | const domain_enum domain, |
96553a0c | 42 | int basic_lookup, int is_in_anonymous); |
6f27419a | 43 | |
b368761e DC |
44 | static struct type *cp_lookup_transparent_type_loop (const char *name, |
45 | const char *scope, | |
46 | int scope_len); | |
47 | ||
9219021c DC |
48 | /* Check to see if SYMBOL refers to an object contained within an |
49 | anonymous namespace; if so, add an appropriate using directive. */ | |
50 | ||
9219021c | 51 | void |
a10964d1 AR |
52 | cp_scan_for_anonymous_namespaces (const struct symbol *const symbol, |
53 | struct objfile *const objfile) | |
9219021c | 54 | { |
df8a16a1 | 55 | if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) |
9219021c | 56 | { |
df8a16a1 | 57 | const char *name = SYMBOL_DEMANGLED_NAME (symbol); |
9219021c DC |
58 | unsigned int previous_component; |
59 | unsigned int next_component; | |
9219021c DC |
60 | |
61 | /* Start with a quick-and-dirty check for mention of "(anonymous | |
62 | namespace)". */ | |
63 | ||
59da4d04 | 64 | if (!cp_is_in_anonymous (name)) |
9219021c DC |
65 | return; |
66 | ||
67 | previous_component = 0; | |
68 | next_component = cp_find_first_component (name + previous_component); | |
69 | ||
70 | while (name[next_component] == ':') | |
71 | { | |
2b1dbab0 KS |
72 | if (((next_component - previous_component) |
73 | == CP_ANONYMOUS_NAMESPACE_LEN) | |
9219021c | 74 | && strncmp (name + previous_component, |
2b1dbab0 KS |
75 | CP_ANONYMOUS_NAMESPACE_STR, |
76 | CP_ANONYMOUS_NAMESPACE_LEN) == 0) | |
9219021c | 77 | { |
aff410f1 MS |
78 | int dest_len = (previous_component == 0 |
79 | ? 0 : previous_component - 2); | |
8c902bb1 | 80 | int src_len = next_component; |
794684b6 | 81 | |
224c3ddb SM |
82 | char *dest = (char *) alloca (dest_len + 1); |
83 | char *src = (char *) alloca (src_len + 1); | |
794684b6 | 84 | |
8c902bb1 SW |
85 | memcpy (dest, name, dest_len); |
86 | memcpy (src, name, src_len); | |
794684b6 | 87 | |
8c902bb1 SW |
88 | dest[dest_len] = '\0'; |
89 | src[src_len] = '\0'; | |
794684b6 | 90 | |
9219021c DC |
91 | /* We've found a component of the name that's an |
92 | anonymous namespace. So add symbols in it to the | |
93 | namespace given by the previous component if there is | |
94 | one, or to the global namespace if there isn't. */ | |
22cee43f PMR |
95 | add_using_directive (&local_using_directives, |
96 | dest, src, NULL, NULL, NULL, 1, | |
97 | &objfile->objfile_obstack); | |
9219021c DC |
98 | } |
99 | /* The "+ 2" is for the "::". */ | |
100 | previous_component = next_component + 2; | |
101 | next_component = (previous_component | |
102 | + cp_find_first_component (name | |
103 | + previous_component)); | |
104 | } | |
105 | } | |
106 | } | |
107 | ||
9219021c DC |
108 | /* Test whether or not NAMESPACE looks like it mentions an anonymous |
109 | namespace; return nonzero if so. */ | |
110 | ||
111 | int | |
59da4d04 | 112 | cp_is_in_anonymous (const char *symbol_name) |
9219021c | 113 | { |
59da4d04 | 114 | return (strstr (symbol_name, CP_ANONYMOUS_NAMESPACE_STR) |
9219021c DC |
115 | != NULL); |
116 | } | |
117 | ||
6f27419a | 118 | /* Look up NAME in DOMAIN in BLOCK's static block and in global blocks. |
d5ff0482 | 119 | If IS_IN_ANONYMOUS is nonzero, the symbol in question is located |
6f27419a | 120 | within an anonymous namespace. */ |
34ef8452 | 121 | |
d12307c1 | 122 | static struct block_symbol |
6f27419a | 123 | cp_basic_lookup_symbol (const char *name, const struct block *block, |
d5ff0482 | 124 | const domain_enum domain, int is_in_anonymous) |
34ef8452 | 125 | { |
d12307c1 | 126 | struct block_symbol sym; |
34ef8452 DE |
127 | |
128 | sym = lookup_symbol_in_static_block (name, block, domain); | |
d12307c1 | 129 | if (sym.symbol != NULL) |
34ef8452 DE |
130 | return sym; |
131 | ||
d5ff0482 | 132 | if (is_in_anonymous) |
34ef8452 DE |
133 | { |
134 | /* Symbols defined in anonymous namespaces have external linkage | |
135 | but should be treated as local to a single file nonetheless. | |
136 | So we only search the current file's global block. */ | |
137 | ||
138 | const struct block *global_block = block_global_block (block); | |
791244be | 139 | |
34ef8452 | 140 | if (global_block != NULL) |
d12307c1 PMR |
141 | { |
142 | sym.symbol = lookup_symbol_in_block (name, global_block, domain); | |
143 | sym.block = global_block; | |
144 | } | |
34ef8452 DE |
145 | } |
146 | else | |
d12307c1 | 147 | sym = lookup_global_symbol (name, block, domain); |
34ef8452 | 148 | |
6f27419a DE |
149 | return sym; |
150 | } | |
151 | ||
152 | /* Search bare symbol NAME in DOMAIN in BLOCK. | |
1994afbf DE |
153 | NAME is guaranteed to not have any scope (no "::") in its name, though |
154 | if for example NAME is a template spec then "::" may appear in the | |
155 | argument list. | |
156 | If LANGDEF is non-NULL then try to lookup NAME as a primitive type in | |
157 | that language. Normally we wouldn't need LANGDEF but fortran also uses | |
158 | this code. | |
6f27419a DE |
159 | If SEARCH is non-zero then see if we can determine "this" from BLOCK, and |
160 | if so then also search for NAME in that class. */ | |
161 | ||
d12307c1 | 162 | static struct block_symbol |
1994afbf DE |
163 | cp_lookup_bare_symbol (const struct language_defn *langdef, |
164 | const char *name, const struct block *block, | |
6f27419a DE |
165 | const domain_enum domain, int search) |
166 | { | |
d12307c1 | 167 | struct block_symbol sym; |
6f27419a DE |
168 | |
169 | /* Note: We can't do a simple assert for ':' not being in NAME because | |
170 | ':' may be in the args of a template spec. This isn't intended to be | |
171 | a complete test, just cheap and documentary. */ | |
172 | if (strchr (name, '<') == NULL && strchr (name, '(') == NULL) | |
1cafadb4 | 173 | gdb_assert (strstr (name, "::") == NULL); |
6f27419a DE |
174 | |
175 | sym = lookup_symbol_in_static_block (name, block, domain); | |
d12307c1 | 176 | if (sym.symbol != NULL) |
6f27419a DE |
177 | return sym; |
178 | ||
1994afbf DE |
179 | /* If we didn't find a definition for a builtin type in the static block, |
180 | search for it now. This is actually the right thing to do and can be | |
181 | a massive performance win. E.g., when debugging a program with lots of | |
182 | shared libraries we could search all of them only to find out the | |
183 | builtin type isn't defined in any of them. This is common for types | |
184 | like "void". */ | |
185 | if (langdef != NULL && domain == VAR_DOMAIN) | |
186 | { | |
187 | struct gdbarch *gdbarch; | |
188 | ||
189 | if (block == NULL) | |
190 | gdbarch = target_gdbarch (); | |
191 | else | |
192 | gdbarch = block_gdbarch (block); | |
d12307c1 PMR |
193 | sym.symbol |
194 | = language_lookup_primitive_type_as_symbol (langdef, gdbarch, name); | |
195 | sym.block = NULL; | |
196 | if (sym.symbol != NULL) | |
1994afbf DE |
197 | return sym; |
198 | } | |
199 | ||
6f27419a | 200 | sym = lookup_global_symbol (name, block, domain); |
d12307c1 | 201 | if (sym.symbol != NULL) |
34ef8452 DE |
202 | return sym; |
203 | ||
204 | if (search) | |
205 | { | |
d12307c1 | 206 | struct block_symbol lang_this; |
6f27419a | 207 | struct type *type; |
34ef8452 | 208 | |
41c977aa WT |
209 | lang_this.symbol = NULL; |
210 | ||
4f19a0e6 WT |
211 | if (langdef != NULL) |
212 | lang_this = lookup_language_this (langdef, block); | |
213 | ||
d12307c1 | 214 | if (lang_this.symbol == NULL) |
b6b80672 | 215 | return null_block_symbol; |
34ef8452 | 216 | |
4f19a0e6 | 217 | |
d12307c1 | 218 | type = check_typedef (TYPE_TARGET_TYPE (SYMBOL_TYPE (lang_this.symbol))); |
6f27419a DE |
219 | /* If TYPE_NAME is NULL, abandon trying to find this symbol. |
220 | This can happen for lambda functions compiled with clang++, | |
221 | which outputs no name for the container class. */ | |
222 | if (TYPE_NAME (type) == NULL) | |
b6b80672 | 223 | return null_block_symbol; |
34ef8452 | 224 | |
d5ff0482 | 225 | /* Look for symbol NAME in this class. */ |
4dcabcc2 | 226 | sym = cp_lookup_nested_symbol (type, name, block, domain); |
6f27419a | 227 | } |
34ef8452 | 228 | |
6f27419a DE |
229 | return sym; |
230 | } | |
34ef8452 | 231 | |
6f27419a DE |
232 | /* Search NAME in DOMAIN in all static blocks, and then in all baseclasses. |
233 | BLOCK specifies the context in which to perform the search. | |
234 | NAME is guaranteed to have scope (contain "::") and PREFIX_LEN specifies | |
d5ff0482 | 235 | the length of the entire scope of NAME (up to, but not including, the last |
6f27419a | 236 | "::". |
34ef8452 | 237 | |
6f27419a DE |
238 | Note: At least in the case of Fortran, which also uses this code, there |
239 | may be no text after the last "::". */ | |
34ef8452 | 240 | |
d12307c1 | 241 | static struct block_symbol |
6f27419a DE |
242 | cp_search_static_and_baseclasses (const char *name, |
243 | const struct block *block, | |
244 | const domain_enum domain, | |
96553a0c DE |
245 | unsigned int prefix_len, |
246 | int is_in_anonymous) | |
6f27419a | 247 | { |
d12307c1 | 248 | struct block_symbol sym; |
6f27419a DE |
249 | char *klass, *nested; |
250 | struct cleanup *cleanup; | |
d12307c1 | 251 | struct block_symbol klass_sym; |
6f27419a | 252 | struct type *klass_type; |
34ef8452 | 253 | |
1cafadb4 DB |
254 | /* Check for malformed input. */ |
255 | if (prefix_len + 2 > strlen (name) || name[prefix_len + 1] != ':') | |
256 | return null_block_symbol; | |
34ef8452 | 257 | |
6f27419a | 258 | /* Find the name of the class and the name of the method, variable, etc. */ |
34ef8452 | 259 | |
6f27419a DE |
260 | /* The class name is everything up to and including PREFIX_LEN. */ |
261 | klass = savestring (name, prefix_len); | |
262 | ||
263 | /* The rest of the name is everything else past the initial scope | |
264 | operator. */ | |
265 | nested = xstrdup (name + prefix_len + 2); | |
266 | ||
267 | /* Add cleanups to free memory for these strings. */ | |
268 | cleanup = make_cleanup (xfree, klass); | |
269 | make_cleanup (xfree, nested); | |
270 | ||
271 | /* Lookup a class named KLASS. If none is found, there is nothing | |
13ce9222 DE |
272 | more that can be done. KLASS could be a namespace, so always look |
273 | in VAR_DOMAIN. This works for classes too because of | |
274 | symbol_matches_domain (which should be replaced with something else, | |
275 | but it's what we have today). */ | |
276 | klass_sym = lookup_global_symbol (klass, block, VAR_DOMAIN); | |
d12307c1 | 277 | if (klass_sym.symbol == NULL) |
6f27419a | 278 | { |
34ef8452 | 279 | do_cleanups (cleanup); |
b6b80672 | 280 | return null_block_symbol; |
34ef8452 | 281 | } |
d12307c1 | 282 | klass_type = SYMBOL_TYPE (klass_sym.symbol); |
6f27419a DE |
283 | |
284 | /* Look for a symbol named NESTED in this class. | |
285 | The caller is assumed to have already have done a basic lookup of NAME. | |
286 | So we pass zero for BASIC_LOOKUP to cp_lookup_nested_symbol_1 here. */ | |
4dcabcc2 DE |
287 | sym = cp_lookup_nested_symbol_1 (klass_type, nested, name, block, domain, |
288 | 0, is_in_anonymous); | |
34ef8452 | 289 | |
6f27419a | 290 | do_cleanups (cleanup); |
34ef8452 DE |
291 | return sym; |
292 | } | |
293 | ||
aff410f1 | 294 | /* Look up NAME in the C++ namespace NAMESPACE. Other arguments are |
8dea366b | 295 | as in cp_lookup_symbol_nonlocal. If SEARCH is non-zero, search |
6f27419a DE |
296 | through base classes for a matching symbol. |
297 | ||
298 | Note: Part of the complexity is because NAME may itself specify scope. | |
299 | Part of the complexity is also because this handles the case where | |
300 | there is no scoping in which case we also try looking in the class of | |
301 | "this" if we can compute it. */ | |
8540c487 | 302 | |
d12307c1 | 303 | static struct block_symbol |
fe978cb0 | 304 | cp_lookup_symbol_in_namespace (const char *the_namespace, const char *name, |
6f27419a DE |
305 | const struct block *block, |
306 | const domain_enum domain, int search) | |
8540c487 | 307 | { |
d2763117 | 308 | char *concatenated_name = NULL; |
6f27419a DE |
309 | int is_in_anonymous; |
310 | unsigned int prefix_len; | |
d12307c1 | 311 | struct block_symbol sym; |
c5504eaf | 312 | |
fe978cb0 | 313 | if (the_namespace[0] != '\0') |
d2763117 | 314 | { |
224c3ddb SM |
315 | concatenated_name |
316 | = (char *) alloca (strlen (the_namespace) + 2 + strlen (name) + 1); | |
fe978cb0 | 317 | strcpy (concatenated_name, the_namespace); |
8540c487 SW |
318 | strcat (concatenated_name, "::"); |
319 | strcat (concatenated_name, name); | |
d2763117 | 320 | name = concatenated_name; |
8540c487 | 321 | } |
d2763117 | 322 | |
6f27419a DE |
323 | prefix_len = cp_entire_prefix_len (name); |
324 | if (prefix_len == 0) | |
1994afbf | 325 | return cp_lookup_bare_symbol (NULL, name, block, domain, search); |
6f27419a DE |
326 | |
327 | /* This would be simpler if we just called cp_lookup_nested_symbol | |
328 | at this point. But that would require first looking up the containing | |
329 | class/namespace. Since we're only searching static and global blocks | |
330 | there's often no need to first do that lookup. */ | |
331 | ||
fe978cb0 PA |
332 | is_in_anonymous |
333 | = the_namespace[0] != '\0' && cp_is_in_anonymous (the_namespace); | |
6f27419a | 334 | sym = cp_basic_lookup_symbol (name, block, domain, is_in_anonymous); |
d12307c1 | 335 | if (sym.symbol != NULL) |
6f27419a DE |
336 | return sym; |
337 | ||
338 | if (search) | |
96553a0c DE |
339 | sym = cp_search_static_and_baseclasses (name, block, domain, prefix_len, |
340 | is_in_anonymous); | |
6f27419a DE |
341 | |
342 | return sym; | |
8540c487 SW |
343 | } |
344 | ||
d5ff0482 | 345 | /* Used for cleanups to reset the "searched" flag in case of an error. */ |
b14e635e SW |
346 | |
347 | static void | |
348 | reset_directive_searched (void *data) | |
349 | { | |
9a3c8263 | 350 | struct using_direct *direct = (struct using_direct *) data; |
b14e635e SW |
351 | direct->searched = 0; |
352 | } | |
353 | ||
aff410f1 MS |
354 | /* Search for NAME by applying all import statements belonging to |
355 | BLOCK which are applicable in SCOPE. If DECLARATION_ONLY the | |
356 | search is restricted to using declarations. | |
13387711 SW |
357 | Example: |
358 | ||
aff410f1 | 359 | namespace A { |
13387711 SW |
360 | int x; |
361 | } | |
362 | using A::x; | |
363 | ||
aff410f1 MS |
364 | If SEARCH_PARENTS the search will include imports which are |
365 | applicable in parents of SCOPE. | |
b14e635e SW |
366 | Example: |
367 | ||
aff410f1 | 368 | namespace A { |
b14e635e | 369 | using namespace X; |
aff410f1 | 370 | namespace B { |
b14e635e SW |
371 | using namespace Y; |
372 | } | |
373 | } | |
374 | ||
aff410f1 MS |
375 | If SCOPE is "A::B" and SEARCH_PARENTS is true the imports of |
376 | namespaces X and Y will be considered. If SEARCH_PARENTS is false | |
4bd0864e DE |
377 | only the import of Y is considered. |
378 | ||
379 | SEARCH_SCOPE_FIRST is an internal implementation detail: Callers must | |
380 | pass 0 for it. Internally we pass 1 when recursing. */ | |
8540c487 | 381 | |
d12307c1 | 382 | static struct block_symbol |
55accf4a DE |
383 | cp_lookup_symbol_via_imports (const char *scope, |
384 | const char *name, | |
385 | const struct block *block, | |
386 | const domain_enum domain, | |
4bd0864e | 387 | const int search_scope_first, |
55accf4a DE |
388 | const int declaration_only, |
389 | const int search_parents) | |
8540c487 | 390 | { |
b14e635e | 391 | struct using_direct *current; |
d12307c1 | 392 | struct block_symbol sym; |
8540c487 | 393 | int len; |
b14e635e SW |
394 | int directive_match; |
395 | struct cleanup *searched_cleanup; | |
8540c487 | 396 | |
d12307c1 | 397 | sym.symbol = NULL; |
1da03605 | 398 | sym.block = NULL; |
d12307c1 | 399 | |
4bd0864e DE |
400 | /* First, try to find the symbol in the given namespace if requested. */ |
401 | if (search_scope_first) | |
aff410f1 | 402 | sym = cp_lookup_symbol_in_namespace (scope, name, |
8dea366b | 403 | block, domain, 1); |
791244be | 404 | |
d12307c1 | 405 | if (sym.symbol != NULL) |
8540c487 SW |
406 | return sym; |
407 | ||
aff410f1 MS |
408 | /* Go through the using directives. If any of them add new names to |
409 | the namespace we're searching in, see if we can find a match by | |
410 | applying them. */ | |
8540c487 SW |
411 | |
412 | for (current = block_using (block); | |
413 | current != NULL; | |
414 | current = current->next) | |
415 | { | |
32019081 JK |
416 | const char **excludep; |
417 | ||
b14e635e SW |
418 | len = strlen (current->import_dest); |
419 | directive_match = (search_parents | |
61012eef | 420 | ? (startswith (scope, current->import_dest) |
b14e635e | 421 | && (len == 0 |
aff410f1 MS |
422 | || scope[len] == ':' |
423 | || scope[len] == '\0')) | |
b14e635e | 424 | : strcmp (scope, current->import_dest) == 0); |
8540c487 | 425 | |
aff410f1 MS |
426 | /* If the import destination is the current scope or one of its |
427 | ancestors then it is applicable. */ | |
b14e635e | 428 | if (directive_match && !current->searched) |
8540c487 | 429 | { |
a1d705ee TT |
430 | /* Mark this import as searched so that the recursive call |
431 | does not search it again. */ | |
432 | current->searched = 1; | |
433 | searched_cleanup = make_cleanup (reset_directive_searched, | |
434 | current); | |
435 | ||
436 | /* If there is an import of a single declaration, compare the | |
437 | imported declaration (after optional renaming by its alias) | |
438 | with the sought out name. If there is a match pass | |
439 | current->import_src as NAMESPACE to direct the search | |
440 | towards the imported namespace. */ | |
441 | if (current->declaration | |
442 | && strcmp (name, current->alias | |
443 | ? current->alias : current->declaration) == 0) | |
444 | sym = cp_lookup_symbol_in_namespace (current->import_src, | |
445 | current->declaration, | |
8dea366b | 446 | block, domain, 1); |
a1d705ee TT |
447 | |
448 | /* If this is a DECLARATION_ONLY search or a symbol was found | |
449 | or this import statement was an import declaration, the | |
450 | search of this import is complete. */ | |
d12307c1 | 451 | if (declaration_only || sym.symbol != NULL || current->declaration) |
a1d705ee TT |
452 | { |
453 | current->searched = 0; | |
454 | discard_cleanups (searched_cleanup); | |
455 | ||
d12307c1 | 456 | if (sym.symbol != NULL) |
a1d705ee TT |
457 | return sym; |
458 | ||
459 | continue; | |
460 | } | |
461 | ||
462 | /* Do not follow CURRENT if NAME matches its EXCLUDES. */ | |
463 | for (excludep = current->excludes; *excludep; excludep++) | |
464 | if (strcmp (name, *excludep) == 0) | |
465 | break; | |
466 | if (*excludep) | |
467 | { | |
468 | discard_cleanups (searched_cleanup); | |
469 | continue; | |
470 | } | |
471 | ||
472 | if (current->alias != NULL | |
473 | && strcmp (name, current->alias) == 0) | |
474 | /* If the import is creating an alias and the alias matches | |
475 | the sought name. Pass current->import_src as the NAME to | |
476 | direct the search towards the aliased namespace. */ | |
477 | { | |
478 | sym = cp_lookup_symbol_in_namespace (scope, | |
479 | current->import_src, | |
8dea366b | 480 | block, domain, 1); |
a1d705ee TT |
481 | } |
482 | else if (current->alias == NULL) | |
483 | { | |
484 | /* If this import statement creates no alias, pass | |
485 | current->inner as NAMESPACE to direct the search | |
486 | towards the imported namespace. */ | |
55accf4a DE |
487 | sym = cp_lookup_symbol_via_imports (current->import_src, |
488 | name, block, | |
4bd0864e | 489 | domain, 1, 0, 0); |
a1d705ee TT |
490 | } |
491 | current->searched = 0; | |
492 | discard_cleanups (searched_cleanup); | |
493 | ||
d12307c1 | 494 | if (sym.symbol != NULL) |
a1d705ee | 495 | return sym; |
8540c487 SW |
496 | } |
497 | } | |
498 | ||
b6b80672 | 499 | return null_block_symbol; |
8540c487 SW |
500 | } |
501 | ||
d5ff0482 | 502 | /* Helper function that searches an array of symbols for one named NAME. */ |
34eaf542 TT |
503 | |
504 | static struct symbol * | |
aff410f1 MS |
505 | search_symbol_list (const char *name, int num, |
506 | struct symbol **syms) | |
34eaf542 TT |
507 | { |
508 | int i; | |
509 | ||
510 | /* Maybe we should store a dictionary in here instead. */ | |
511 | for (i = 0; i < num; ++i) | |
512 | { | |
513 | if (strcmp (name, SYMBOL_NATURAL_NAME (syms[i])) == 0) | |
514 | return syms[i]; | |
515 | } | |
516 | return NULL; | |
517 | } | |
518 | ||
55accf4a | 519 | /* Like cp_lookup_symbol_via_imports, but if BLOCK is a function, it |
34eaf542 TT |
520 | searches through the template parameters of the function and the |
521 | function's type. */ | |
522 | ||
d12307c1 | 523 | struct block_symbol |
34eaf542 TT |
524 | cp_lookup_symbol_imports_or_template (const char *scope, |
525 | const char *name, | |
526 | const struct block *block, | |
527 | const domain_enum domain) | |
528 | { | |
529 | struct symbol *function = BLOCK_FUNCTION (block); | |
d12307c1 | 530 | struct block_symbol result; |
cc485e62 DE |
531 | |
532 | if (symbol_lookup_debug) | |
533 | { | |
534 | fprintf_unfiltered (gdb_stdlog, | |
535 | "cp_lookup_symbol_imports_or_template" | |
536 | " (%s, %s, %s, %s)\n", | |
537 | scope, name, host_address_to_string (block), | |
538 | domain_name (domain)); | |
539 | } | |
34eaf542 TT |
540 | |
541 | if (function != NULL && SYMBOL_LANGUAGE (function) == language_cplus) | |
542 | { | |
34eaf542 TT |
543 | /* Search the function's template parameters. */ |
544 | if (SYMBOL_IS_CPLUS_TEMPLATE_FUNCTION (function)) | |
545 | { | |
791244be | 546 | struct template_symbol *templ |
aff410f1 | 547 | = (struct template_symbol *) function; |
d12307c1 PMR |
548 | struct symbol *sym = search_symbol_list (name, |
549 | templ->n_template_arguments, | |
550 | templ->template_arguments); | |
34eaf542 | 551 | |
d12307c1 | 552 | if (sym != NULL) |
cc485e62 DE |
553 | { |
554 | if (symbol_lookup_debug) | |
555 | { | |
556 | fprintf_unfiltered (gdb_stdlog, | |
557 | "cp_lookup_symbol_imports_or_template" | |
558 | " (...) = %s\n", | |
d12307c1 | 559 | host_address_to_string (sym)); |
cc485e62 | 560 | } |
d12307c1 | 561 | return (struct block_symbol) {sym, block}; |
cc485e62 | 562 | } |
34eaf542 TT |
563 | } |
564 | ||
565 | /* Search the template parameters of the function's defining | |
566 | context. */ | |
567 | if (SYMBOL_NATURAL_NAME (function)) | |
568 | { | |
569 | struct type *context; | |
570 | char *name_copy = xstrdup (SYMBOL_NATURAL_NAME (function)); | |
571 | struct cleanup *cleanups = make_cleanup (xfree, name_copy); | |
572 | const struct language_defn *lang = language_def (language_cplus); | |
08be3fe3 | 573 | struct gdbarch *arch = symbol_arch (function); |
34eaf542 | 574 | const struct block *parent = BLOCK_SUPERBLOCK (block); |
d12307c1 | 575 | struct symbol *sym; |
34eaf542 TT |
576 | |
577 | while (1) | |
578 | { | |
34eaf542 TT |
579 | unsigned int prefix_len = cp_entire_prefix_len (name_copy); |
580 | ||
581 | if (prefix_len == 0) | |
582 | context = NULL; | |
583 | else | |
584 | { | |
585 | name_copy[prefix_len] = '\0'; | |
aff410f1 MS |
586 | context = lookup_typename (lang, arch, |
587 | name_copy, | |
588 | parent, 1); | |
34eaf542 TT |
589 | } |
590 | ||
591 | if (context == NULL) | |
592 | break; | |
593 | ||
d12307c1 | 594 | sym |
aff410f1 MS |
595 | = search_symbol_list (name, |
596 | TYPE_N_TEMPLATE_ARGUMENTS (context), | |
597 | TYPE_TEMPLATE_ARGUMENTS (context)); | |
d12307c1 | 598 | if (sym != NULL) |
c27e16e3 TT |
599 | { |
600 | do_cleanups (cleanups); | |
cc485e62 DE |
601 | if (symbol_lookup_debug) |
602 | { | |
d12307c1 PMR |
603 | fprintf_unfiltered |
604 | (gdb_stdlog, | |
605 | "cp_lookup_symbol_imports_or_template (...) = %s\n", | |
606 | host_address_to_string (sym)); | |
cc485e62 | 607 | } |
d12307c1 | 608 | return (struct block_symbol) {sym, parent}; |
c27e16e3 | 609 | } |
34eaf542 TT |
610 | } |
611 | ||
612 | do_cleanups (cleanups); | |
613 | } | |
614 | } | |
615 | ||
4bd0864e | 616 | result = cp_lookup_symbol_via_imports (scope, name, block, domain, 0, 1, 1); |
cc485e62 DE |
617 | if (symbol_lookup_debug) |
618 | { | |
619 | fprintf_unfiltered (gdb_stdlog, | |
620 | "cp_lookup_symbol_imports_or_template (...) = %s\n", | |
d12307c1 PMR |
621 | result.symbol != NULL |
622 | ? host_address_to_string (result.symbol) : "NULL"); | |
cc485e62 DE |
623 | } |
624 | return result; | |
34eaf542 TT |
625 | } |
626 | ||
f953163f DE |
627 | /* Search for NAME by applying relevant import statements belonging to BLOCK |
628 | and its parents. SCOPE is the namespace scope of the context in which the | |
629 | search is being evaluated. */ | |
630 | ||
d12307c1 | 631 | static struct block_symbol |
f953163f DE |
632 | cp_lookup_symbol_via_all_imports (const char *scope, const char *name, |
633 | const struct block *block, | |
634 | const domain_enum domain) | |
635 | { | |
d12307c1 | 636 | struct block_symbol sym; |
f953163f DE |
637 | |
638 | while (block != NULL) | |
639 | { | |
640 | sym = cp_lookup_symbol_via_imports (scope, name, block, domain, 0, 0, 1); | |
d12307c1 | 641 | if (sym.symbol) |
f953163f DE |
642 | return sym; |
643 | ||
644 | block = BLOCK_SUPERBLOCK (block); | |
645 | } | |
646 | ||
b6b80672 | 647 | return null_block_symbol; |
f953163f DE |
648 | } |
649 | ||
791244be DE |
650 | /* Searches for NAME in the current namespace, and by applying |
651 | relevant import statements belonging to BLOCK and its parents. | |
652 | SCOPE is the namespace scope of the context in which the search is | |
653 | being evaluated. */ | |
8540c487 | 654 | |
d12307c1 | 655 | struct block_symbol |
8540c487 SW |
656 | cp_lookup_symbol_namespace (const char *scope, |
657 | const char *name, | |
8540c487 | 658 | const struct block *block, |
13387711 | 659 | const domain_enum domain) |
8540c487 | 660 | { |
d12307c1 | 661 | struct block_symbol sym; |
cc485e62 DE |
662 | |
663 | if (symbol_lookup_debug) | |
664 | { | |
665 | fprintf_unfiltered (gdb_stdlog, | |
666 | "cp_lookup_symbol_namespace (%s, %s, %s, %s)\n", | |
667 | scope, name, host_address_to_string (block), | |
668 | domain_name (domain)); | |
669 | } | |
670 | ||
13387711 | 671 | /* First, try to find the symbol in the given namespace. */ |
f953163f | 672 | sym = cp_lookup_symbol_in_namespace (scope, name, block, domain, 1); |
8540c487 | 673 | |
f953163f | 674 | /* Search for name in namespaces imported to this and parent blocks. */ |
d12307c1 | 675 | if (sym.symbol == NULL) |
f953163f | 676 | sym = cp_lookup_symbol_via_all_imports (scope, name, block, domain); |
8540c487 | 677 | |
cc485e62 DE |
678 | if (symbol_lookup_debug) |
679 | { | |
680 | fprintf_unfiltered (gdb_stdlog, | |
f953163f | 681 | "cp_lookup_symbol_namespace (...) = %s\n", |
d12307c1 PMR |
682 | sym.symbol != NULL |
683 | ? host_address_to_string (sym.symbol) : "NULL"); | |
cc485e62 | 684 | } |
f953163f | 685 | return sym; |
1fcb5155 DC |
686 | } |
687 | ||
688 | /* Lookup NAME at namespace scope (or, in C terms, in static and | |
689 | global variables). SCOPE is the namespace that the current | |
690 | function is defined within; only consider namespaces whose length | |
691 | is at least SCOPE_LEN. Other arguments are as in | |
692 | cp_lookup_symbol_nonlocal. | |
693 | ||
694 | For example, if we're within a function A::B::f and looking for a | |
3882f37a | 695 | symbol x, this will get called with NAME = "x", SCOPE = "A::B", and |
1fcb5155 DC |
696 | SCOPE_LEN = 0. It then calls itself with NAME and SCOPE the same, |
697 | but with SCOPE_LEN = 1. And then it calls itself with NAME and | |
698 | SCOPE the same, but with SCOPE_LEN = 4. This third call looks for | |
699 | "A::B::x"; if it doesn't find it, then the second call looks for | |
700 | "A::x", and if that call fails, then the first call looks for | |
701 | "x". */ | |
702 | ||
d12307c1 | 703 | static struct block_symbol |
1994afbf DE |
704 | lookup_namespace_scope (const struct language_defn *langdef, |
705 | const char *name, | |
1fcb5155 DC |
706 | const struct block *block, |
707 | const domain_enum domain, | |
1fcb5155 DC |
708 | const char *scope, |
709 | int scope_len) | |
710 | { | |
fe978cb0 | 711 | char *the_namespace; |
1fcb5155 DC |
712 | |
713 | if (scope[scope_len] != '\0') | |
714 | { | |
715 | /* Recursively search for names in child namespaces first. */ | |
716 | ||
d12307c1 | 717 | struct block_symbol sym; |
1fcb5155 DC |
718 | int new_scope_len = scope_len; |
719 | ||
720 | /* If the current scope is followed by "::", skip past that. */ | |
721 | if (new_scope_len != 0) | |
722 | { | |
723 | gdb_assert (scope[new_scope_len] == ':'); | |
724 | new_scope_len += 2; | |
725 | } | |
726 | new_scope_len += cp_find_first_component (scope + new_scope_len); | |
1994afbf | 727 | sym = lookup_namespace_scope (langdef, name, block, domain, |
aff410f1 | 728 | scope, new_scope_len); |
d12307c1 | 729 | if (sym.symbol != NULL) |
1fcb5155 DC |
730 | return sym; |
731 | } | |
732 | ||
733 | /* Okay, we didn't find a match in our children, so look for the | |
1994afbf DE |
734 | name in the current namespace. |
735 | ||
736 | If we there is no scope and we know we have a bare symbol, then short | |
737 | circuit everything and call cp_lookup_bare_symbol directly. | |
738 | This isn't an optimization, rather it allows us to pass LANGDEF which | |
739 | is needed for primitive type lookup. The test doesn't have to be | |
740 | perfect: if NAME is a bare symbol that our test doesn't catch (e.g., a | |
741 | template symbol with "::" in the argument list) then | |
742 | cp_lookup_symbol_in_namespace will catch it. */ | |
743 | ||
744 | if (scope_len == 0 && strchr (name, ':') == NULL) | |
745 | return cp_lookup_bare_symbol (langdef, name, block, domain, 1); | |
1fcb5155 | 746 | |
224c3ddb | 747 | the_namespace = (char *) alloca (scope_len + 1); |
fe978cb0 PA |
748 | strncpy (the_namespace, scope, scope_len); |
749 | the_namespace[scope_len] = '\0'; | |
750 | return cp_lookup_symbol_in_namespace (the_namespace, name, | |
8dea366b | 751 | block, domain, 1); |
1fcb5155 DC |
752 | } |
753 | ||
56286edf DE |
754 | /* The C++-specific version of name lookup for static and global |
755 | names. This makes sure that names get looked for in all namespaces | |
756 | that are in scope. NAME is the natural name of the symbol that | |
757 | we're looking for, BLOCK is the block that we're searching within, | |
758 | DOMAIN says what kind of symbols we're looking for. */ | |
759 | ||
d12307c1 | 760 | struct block_symbol |
f606139a DE |
761 | cp_lookup_symbol_nonlocal (const struct language_defn *langdef, |
762 | const char *name, | |
56286edf DE |
763 | const struct block *block, |
764 | const domain_enum domain) | |
765 | { | |
d12307c1 | 766 | struct block_symbol sym; |
56286edf DE |
767 | const char *scope = block_scope (block); |
768 | ||
cc485e62 DE |
769 | if (symbol_lookup_debug) |
770 | { | |
771 | fprintf_unfiltered (gdb_stdlog, | |
772 | "cp_lookup_symbol_non_local" | |
773 | " (%s, %s (scope %s), %s)\n", | |
774 | name, host_address_to_string (block), scope, | |
775 | domain_name (domain)); | |
776 | } | |
777 | ||
f953163f DE |
778 | /* First, try to find the symbol in the given namespace, and all |
779 | containing namespaces. */ | |
1994afbf | 780 | sym = lookup_namespace_scope (langdef, name, block, domain, scope, 0); |
56286edf | 781 | |
f953163f | 782 | /* Search for name in namespaces imported to this and parent blocks. */ |
d12307c1 | 783 | if (sym.symbol == NULL) |
f953163f DE |
784 | sym = cp_lookup_symbol_via_all_imports (scope, name, block, domain); |
785 | ||
cc485e62 DE |
786 | if (symbol_lookup_debug) |
787 | { | |
788 | fprintf_unfiltered (gdb_stdlog, | |
789 | "cp_lookup_symbol_nonlocal (...) = %s\n", | |
d12307c1 PMR |
790 | (sym.symbol != NULL |
791 | ? host_address_to_string (sym.symbol) | |
792 | : "NULL")); | |
cc485e62 DE |
793 | } |
794 | return sym; | |
56286edf DE |
795 | } |
796 | ||
f7e3ecae KS |
797 | /* Search through the base classes of PARENT_TYPE for a base class |
798 | named NAME and return its type. If not found, return NULL. */ | |
799 | ||
800 | struct type * | |
a07e3e18 | 801 | cp_find_type_baseclass_by_name (struct type *parent_type, const char *name) |
f7e3ecae KS |
802 | { |
803 | int i; | |
804 | ||
f168693b | 805 | parent_type = check_typedef (parent_type); |
f7e3ecae KS |
806 | for (i = 0; i < TYPE_N_BASECLASSES (parent_type); ++i) |
807 | { | |
808 | struct type *type = check_typedef (TYPE_BASECLASS (parent_type, i)); | |
809 | const char *base_name = TYPE_BASECLASS_NAME (parent_type, i); | |
810 | ||
811 | if (base_name == NULL) | |
812 | continue; | |
813 | ||
814 | if (streq (base_name, name)) | |
815 | return type; | |
816 | ||
a07e3e18 | 817 | type = cp_find_type_baseclass_by_name (type, name); |
f7e3ecae KS |
818 | if (type != NULL) |
819 | return type; | |
820 | } | |
821 | ||
822 | return NULL; | |
823 | } | |
824 | ||
8dea366b KS |
825 | /* Search through the base classes of PARENT_TYPE for a symbol named |
826 | NAME in block BLOCK. */ | |
827 | ||
d12307c1 | 828 | static struct block_symbol |
8dea366b | 829 | find_symbol_in_baseclass (struct type *parent_type, const char *name, |
4dcabcc2 DE |
830 | const struct block *block, const domain_enum domain, |
831 | int is_in_anonymous) | |
8dea366b KS |
832 | { |
833 | int i; | |
d12307c1 | 834 | struct block_symbol sym; |
8dea366b KS |
835 | struct cleanup *cleanup; |
836 | char *concatenated_name; | |
837 | ||
d12307c1 PMR |
838 | sym.symbol = NULL; |
839 | sym.block = NULL; | |
8dea366b KS |
840 | concatenated_name = NULL; |
841 | cleanup = make_cleanup (free_current_contents, &concatenated_name); | |
791244be | 842 | |
8dea366b KS |
843 | for (i = 0; i < TYPE_N_BASECLASSES (parent_type); ++i) |
844 | { | |
845 | size_t len; | |
69fc87c2 | 846 | struct type *base_type = TYPE_BASECLASS (parent_type, i); |
8dea366b KS |
847 | const char *base_name = TYPE_BASECLASS_NAME (parent_type, i); |
848 | ||
849 | if (base_name == NULL) | |
850 | continue; | |
851 | ||
8dea366b | 852 | len = strlen (base_name) + 2 + strlen (name) + 1; |
224c3ddb | 853 | concatenated_name = (char *) xrealloc (concatenated_name, len); |
8dea366b | 854 | xsnprintf (concatenated_name, len, "%s::%s", base_name, name); |
8dea366b | 855 | |
6f27419a | 856 | sym = cp_lookup_nested_symbol_1 (base_type, name, concatenated_name, |
4dcabcc2 | 857 | block, domain, 1, is_in_anonymous); |
d12307c1 | 858 | if (sym.symbol != NULL) |
69fc87c2 | 859 | break; |
8dea366b KS |
860 | } |
861 | ||
862 | do_cleanups (cleanup); | |
0c2e6019 | 863 | return sym; |
5c4e30ca DC |
864 | } |
865 | ||
4dcabcc2 DE |
866 | /* Helper function to look up NESTED_NAME in CONTAINER_TYPE and in DOMAIN |
867 | and within the context of BLOCK. | |
d5ff0482 | 868 | NESTED_NAME may have scope ("::"). |
6f27419a DE |
869 | CONTAINER_TYPE needn't have been "check_typedef'd" yet. |
870 | CONCATENATED_NAME is the fully scoped spelling of NESTED_NAME, it is | |
871 | passed as an argument so that callers can control how space for it is | |
872 | allocated. | |
873 | If BASIC_LOOKUP is non-zero then perform a basic lookup of | |
96553a0c DE |
874 | CONCATENATED_NAME. See cp_basic_lookup_symbol for details. |
875 | If IS_IN_ANONYMOUS is non-zero then CONCATENATED_NAME is in an anonymous | |
876 | namespace. */ | |
6f27419a | 877 | |
d12307c1 | 878 | static struct block_symbol |
6f27419a DE |
879 | cp_lookup_nested_symbol_1 (struct type *container_type, |
880 | const char *nested_name, | |
881 | const char *concatenated_name, | |
882 | const struct block *block, | |
4dcabcc2 | 883 | const domain_enum domain, |
96553a0c | 884 | int basic_lookup, int is_in_anonymous) |
6f27419a | 885 | { |
d12307c1 | 886 | struct block_symbol sym; |
6f27419a DE |
887 | |
888 | /* NOTE: carlton/2003-11-10: We don't treat C++ class members | |
889 | of classes like, say, data or function members. Instead, | |
890 | they're just represented by symbols whose names are | |
891 | qualified by the name of the surrounding class. This is | |
892 | just like members of namespaces; in particular, | |
893 | cp_basic_lookup_symbol works when looking them up. */ | |
894 | ||
895 | if (basic_lookup) | |
896 | { | |
4dcabcc2 | 897 | sym = cp_basic_lookup_symbol (concatenated_name, block, domain, |
6f27419a | 898 | is_in_anonymous); |
d12307c1 | 899 | if (sym.symbol != NULL) |
6f27419a DE |
900 | return sym; |
901 | } | |
902 | ||
903 | /* Now search all static file-level symbols. We have to do this for things | |
904 | like typedefs in the class. We do not try to guess any imported | |
905 | namespace as even the fully specified namespace search is already not | |
906 | C++ compliant and more assumptions could make it too magic. */ | |
907 | ||
908 | /* First search in this symtab, what we want is possibly there. */ | |
4dcabcc2 | 909 | sym = lookup_symbol_in_static_block (concatenated_name, block, domain); |
d12307c1 | 910 | if (sym.symbol != NULL) |
6f27419a DE |
911 | return sym; |
912 | ||
913 | /* Nope. We now have to search all static blocks in all objfiles, | |
914 | even if block != NULL, because there's no guarantees as to which | |
96553a0c DE |
915 | symtab the symbol we want is in. Except for symbols defined in |
916 | anonymous namespaces should be treated as local to a single file, | |
917 | which we just searched. */ | |
918 | if (!is_in_anonymous) | |
919 | { | |
4dcabcc2 | 920 | sym = lookup_static_symbol (concatenated_name, domain); |
d12307c1 | 921 | if (sym.symbol != NULL) |
96553a0c DE |
922 | return sym; |
923 | } | |
6f27419a DE |
924 | |
925 | /* If this is a class with baseclasses, search them next. */ | |
f168693b | 926 | container_type = check_typedef (container_type); |
6f27419a DE |
927 | if (TYPE_N_BASECLASSES (container_type) > 0) |
928 | { | |
96553a0c | 929 | sym = find_symbol_in_baseclass (container_type, nested_name, block, |
4dcabcc2 | 930 | domain, is_in_anonymous); |
d12307c1 | 931 | if (sym.symbol != NULL) |
6f27419a DE |
932 | return sym; |
933 | } | |
934 | ||
b6b80672 | 935 | return null_block_symbol; |
6f27419a DE |
936 | } |
937 | ||
50af5481 | 938 | /* Look up a symbol named NESTED_NAME that is nested inside the C++ |
79c2c32d | 939 | class or namespace given by PARENT_TYPE, from within the context |
4dcabcc2 DE |
940 | given by BLOCK, and in DOMAIN. |
941 | Return NULL if there is no such nested symbol. */ | |
79c2c32d | 942 | |
d12307c1 | 943 | struct block_symbol |
50af5481 JK |
944 | cp_lookup_nested_symbol (struct type *parent_type, |
945 | const char *nested_name, | |
4dcabcc2 DE |
946 | const struct block *block, |
947 | const domain_enum domain) | |
79c2c32d | 948 | { |
05a6c3c8 | 949 | /* type_name_no_tag_or_error provides better error reporting using the |
d8228535 JK |
950 | original type. */ |
951 | struct type *saved_parent_type = parent_type; | |
952 | ||
f168693b | 953 | parent_type = check_typedef (parent_type); |
d8228535 | 954 | |
cc485e62 DE |
955 | if (symbol_lookup_debug) |
956 | { | |
957 | const char *type_name = type_name_no_tag (saved_parent_type); | |
958 | ||
959 | fprintf_unfiltered (gdb_stdlog, | |
4dcabcc2 | 960 | "cp_lookup_nested_symbol (%s, %s, %s, %s)\n", |
cc485e62 | 961 | type_name != NULL ? type_name : "unnamed", |
4dcabcc2 DE |
962 | nested_name, host_address_to_string (block), |
963 | domain_name (domain)); | |
cc485e62 DE |
964 | } |
965 | ||
79c2c32d DC |
966 | switch (TYPE_CODE (parent_type)) |
967 | { | |
63d06c5c | 968 | case TYPE_CODE_STRUCT: |
79c2c32d | 969 | case TYPE_CODE_NAMESPACE: |
48e32051 | 970 | case TYPE_CODE_UNION: |
3d567982 | 971 | case TYPE_CODE_ENUM: |
530e8392 KB |
972 | /* NOTE: Handle modules here as well, because Fortran is re-using the C++ |
973 | specific code to lookup nested symbols in modules, by calling the | |
974 | function pointer la_lookup_symbol_nonlocal, which ends up here. */ | |
975 | case TYPE_CODE_MODULE: | |
79c2c32d | 976 | { |
08850b56 | 977 | int size; |
d8228535 | 978 | const char *parent_name = type_name_no_tag_or_error (saved_parent_type); |
d12307c1 | 979 | struct block_symbol sym; |
41f62f39 | 980 | char *concatenated_name; |
96553a0c | 981 | int is_in_anonymous; |
c5504eaf | 982 | |
08850b56 | 983 | size = strlen (parent_name) + 2 + strlen (nested_name) + 1; |
224c3ddb | 984 | concatenated_name = (char *) alloca (size); |
08850b56 | 985 | xsnprintf (concatenated_name, size, "%s::%s", |
6f27419a | 986 | parent_name, nested_name); |
96553a0c | 987 | is_in_anonymous = cp_is_in_anonymous (concatenated_name); |
6f27419a DE |
988 | |
989 | sym = cp_lookup_nested_symbol_1 (parent_type, nested_name, | |
4dcabcc2 DE |
990 | concatenated_name, block, domain, |
991 | 1, is_in_anonymous); | |
41f62f39 | 992 | |
cc485e62 DE |
993 | if (symbol_lookup_debug) |
994 | { | |
995 | fprintf_unfiltered (gdb_stdlog, | |
996 | "cp_lookup_nested_symbol (...) = %s\n", | |
d12307c1 PMR |
997 | (sym.symbol != NULL |
998 | ? host_address_to_string (sym.symbol) | |
999 | : "NULL")); | |
cc485e62 DE |
1000 | } |
1001 | return sym; | |
79c2c32d | 1002 | } |
bb869963 SDJ |
1003 | |
1004 | case TYPE_CODE_FUNC: | |
1005 | case TYPE_CODE_METHOD: | |
cc485e62 DE |
1006 | if (symbol_lookup_debug) |
1007 | { | |
1008 | fprintf_unfiltered (gdb_stdlog, | |
1009 | "cp_lookup_nested_symbol (...) = NULL" | |
1010 | " (func/method)\n"); | |
1011 | } | |
b6b80672 | 1012 | return null_block_symbol; |
bb869963 | 1013 | |
79c2c32d DC |
1014 | default: |
1015 | internal_error (__FILE__, __LINE__, | |
50af5481 | 1016 | _("cp_lookup_nested_symbol called " |
3e43a32a | 1017 | "on a non-aggregate type.")); |
79c2c32d DC |
1018 | } |
1019 | } | |
1020 | ||
b368761e DC |
1021 | /* The C++-version of lookup_transparent_type. */ |
1022 | ||
1023 | /* FIXME: carlton/2004-01-16: The problem that this is trying to | |
1024 | address is that, unfortunately, sometimes NAME is wrong: it may not | |
1025 | include the name of namespaces enclosing the type in question. | |
b021a221 | 1026 | lookup_transparent_type gets called when the type in question |
b368761e DC |
1027 | is a declaration, and we're trying to find its definition; but, for |
1028 | declarations, our type name deduction mechanism doesn't work. | |
1029 | There's nothing we can do to fix this in general, I think, in the | |
1030 | absence of debug information about namespaces (I've filed PR | |
1031 | gdb/1511 about this); until such debug information becomes more | |
1032 | prevalent, one heuristic which sometimes looks is to search for the | |
1033 | definition in namespaces containing the current namespace. | |
1034 | ||
1035 | We should delete this functions once the appropriate debug | |
1036 | information becomes more widespread. (GCC 3.4 will be the first | |
1037 | released version of GCC with such information.) */ | |
1038 | ||
1039 | struct type * | |
1040 | cp_lookup_transparent_type (const char *name) | |
1041 | { | |
1042 | /* First, try the honest way of looking up the definition. */ | |
1043 | struct type *t = basic_lookup_transparent_type (name); | |
1044 | const char *scope; | |
1045 | ||
1046 | if (t != NULL) | |
1047 | return t; | |
1048 | ||
1049 | /* If that doesn't work and we're within a namespace, look there | |
1050 | instead. */ | |
1051 | scope = block_scope (get_selected_block (0)); | |
1052 | ||
1053 | if (scope[0] == '\0') | |
1054 | return NULL; | |
1055 | ||
1056 | return cp_lookup_transparent_type_loop (name, scope, 0); | |
1057 | } | |
1058 | ||
b021a221 MS |
1059 | /* Lookup the type definition associated to NAME in namespaces/classes |
1060 | containing SCOPE whose name is strictly longer than LENGTH. LENGTH | |
1061 | must be the index of the start of a component of SCOPE. */ | |
b368761e DC |
1062 | |
1063 | static struct type * | |
aff410f1 MS |
1064 | cp_lookup_transparent_type_loop (const char *name, |
1065 | const char *scope, | |
b368761e DC |
1066 | int length) |
1067 | { | |
1198ecbe | 1068 | int scope_length = length + cp_find_first_component (scope + length); |
b368761e DC |
1069 | char *full_name; |
1070 | ||
1071 | /* If the current scope is followed by "::", look in the next | |
1072 | component. */ | |
1073 | if (scope[scope_length] == ':') | |
1074 | { | |
1075 | struct type *retval | |
aff410f1 MS |
1076 | = cp_lookup_transparent_type_loop (name, scope, |
1077 | scope_length + 2); | |
c5504eaf | 1078 | |
b368761e DC |
1079 | if (retval != NULL) |
1080 | return retval; | |
1081 | } | |
1082 | ||
224c3ddb | 1083 | full_name = (char *) alloca (scope_length + 2 + strlen (name) + 1); |
b368761e DC |
1084 | strncpy (full_name, scope, scope_length); |
1085 | strncpy (full_name + scope_length, "::", 2); | |
1086 | strcpy (full_name + scope_length + 2, name); | |
1087 | ||
1088 | return basic_lookup_transparent_type (full_name); | |
1089 | } | |
1090 | ||
0c2e6019 TT |
1091 | /* This used to do something but was removed when it became |
1092 | obsolete. */ | |
5c4e30ca DC |
1093 | |
1094 | static void | |
1095 | maintenance_cplus_namespace (char *args, int from_tty) | |
1096 | { | |
0c2e6019 | 1097 | printf_unfiltered (_("The `maint namespace' command was removed.\n")); |
5c4e30ca DC |
1098 | } |
1099 | ||
2c0b251b PA |
1100 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
1101 | extern initialize_file_ftype _initialize_cp_namespace; | |
1102 | ||
5c4e30ca DC |
1103 | void |
1104 | _initialize_cp_namespace (void) | |
1105 | { | |
0c2e6019 TT |
1106 | struct cmd_list_element *cmd; |
1107 | ||
1108 | cmd = add_cmd ("namespace", class_maintenance, | |
1109 | maintenance_cplus_namespace, | |
1110 | _("Deprecated placeholder for removed functionality."), | |
1111 | &maint_cplus_cmd_list); | |
1112 | deprecate_cmd (cmd, NULL); | |
1fcb5155 | 1113 | } |