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9219021c | 1 | /* Helper routines for C++ support in GDB. |
ecd75fc8 | 2 | Copyright (C) 2003-2014 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" |
9219021c | 34 | |
6f27419a DE |
35 | static struct symbol * |
36 | cp_lookup_nested_symbol_1 (struct type *container_type, | |
37 | const char *nested_name, | |
38 | const char *concatenated_name, | |
39 | const struct block *block, | |
40 | int basic_lookup); | |
41 | ||
b368761e DC |
42 | static struct type *cp_lookup_transparent_type_loop (const char *name, |
43 | const char *scope, | |
44 | int scope_len); | |
45 | ||
9219021c DC |
46 | /* Check to see if SYMBOL refers to an object contained within an |
47 | anonymous namespace; if so, add an appropriate using directive. */ | |
48 | ||
9219021c | 49 | void |
a10964d1 AR |
50 | cp_scan_for_anonymous_namespaces (const struct symbol *const symbol, |
51 | struct objfile *const objfile) | |
9219021c | 52 | { |
df8a16a1 | 53 | if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) |
9219021c | 54 | { |
df8a16a1 | 55 | const char *name = SYMBOL_DEMANGLED_NAME (symbol); |
9219021c DC |
56 | unsigned int previous_component; |
57 | unsigned int next_component; | |
9219021c DC |
58 | |
59 | /* Start with a quick-and-dirty check for mention of "(anonymous | |
60 | namespace)". */ | |
61 | ||
59da4d04 | 62 | if (!cp_is_in_anonymous (name)) |
9219021c DC |
63 | return; |
64 | ||
65 | previous_component = 0; | |
66 | next_component = cp_find_first_component (name + previous_component); | |
67 | ||
68 | while (name[next_component] == ':') | |
69 | { | |
2b1dbab0 KS |
70 | if (((next_component - previous_component) |
71 | == CP_ANONYMOUS_NAMESPACE_LEN) | |
9219021c | 72 | && strncmp (name + previous_component, |
2b1dbab0 KS |
73 | CP_ANONYMOUS_NAMESPACE_STR, |
74 | CP_ANONYMOUS_NAMESPACE_LEN) == 0) | |
9219021c | 75 | { |
aff410f1 MS |
76 | int dest_len = (previous_component == 0 |
77 | ? 0 : previous_component - 2); | |
8c902bb1 | 78 | int src_len = next_component; |
794684b6 | 79 | |
8c902bb1 SW |
80 | char *dest = alloca (dest_len + 1); |
81 | char *src = alloca (src_len + 1); | |
794684b6 | 82 | |
8c902bb1 SW |
83 | memcpy (dest, name, dest_len); |
84 | memcpy (src, name, src_len); | |
794684b6 | 85 | |
8c902bb1 SW |
86 | dest[dest_len] = '\0'; |
87 | src[src_len] = '\0'; | |
794684b6 | 88 | |
9219021c DC |
89 | /* We've found a component of the name that's an |
90 | anonymous namespace. So add symbols in it to the | |
91 | namespace given by the previous component if there is | |
92 | one, or to the global namespace if there isn't. */ | |
12aaed36 | 93 | cp_add_using_directive (dest, src, NULL, NULL, NULL, 1, |
a10964d1 | 94 | &objfile->objfile_obstack); |
9219021c DC |
95 | } |
96 | /* The "+ 2" is for the "::". */ | |
97 | previous_component = next_component + 2; | |
98 | next_component = (previous_component | |
99 | + cp_find_first_component (name | |
100 | + previous_component)); | |
101 | } | |
102 | } | |
103 | } | |
104 | ||
aff410f1 MS |
105 | /* Add a using directive to using_directives. If the using directive |
106 | in question has already been added, don't add it twice. | |
107 | ||
108 | Create a new struct using_direct which imports the namespace SRC | |
109 | into the scope DEST. ALIAS is the name of the imported namespace | |
110 | in the current scope. If ALIAS is NULL then the namespace is known | |
111 | by its original name. DECLARATION is the name if the imported | |
112 | varable if this is a declaration import (Eg. using A::x), otherwise | |
12aaed36 TT |
113 | it is NULL. EXCLUDES is a list of names not to import from an |
114 | imported module or NULL. If COPY_NAMES is non-zero, then the | |
115 | arguments are copied into newly allocated memory so they can be | |
116 | temporaries. For EXCLUDES the VEC pointers are copied but the | |
32019081 | 117 | pointed to characters are not copied. */ |
9219021c DC |
118 | |
119 | void | |
13387711 SW |
120 | cp_add_using_directive (const char *dest, |
121 | const char *src, | |
122 | const char *alias, | |
123 | const char *declaration, | |
32019081 | 124 | VEC (const_char_ptr) *excludes, |
12aaed36 | 125 | int copy_names, |
c0cc3a76 | 126 | struct obstack *obstack) |
9219021c DC |
127 | { |
128 | struct using_direct *current; | |
129 | struct using_direct *new; | |
791244be | 130 | |
9219021c DC |
131 | /* Has it already been added? */ |
132 | ||
27aa8d6a | 133 | for (current = using_directives; current != NULL; current = current->next) |
9219021c | 134 | { |
32019081 JK |
135 | int ix; |
136 | const char *param; | |
137 | ||
70c622a3 JK |
138 | if (strcmp (current->import_src, src) != 0) |
139 | continue; | |
140 | if (strcmp (current->import_dest, dest) != 0) | |
141 | continue; | |
142 | if ((alias == NULL && current->alias != NULL) | |
143 | || (alias != NULL && current->alias == NULL) | |
144 | || (alias != NULL && current->alias != NULL | |
145 | && strcmp (alias, current->alias) != 0)) | |
146 | continue; | |
147 | if ((declaration == NULL && current->declaration != NULL) | |
148 | || (declaration != NULL && current->declaration == NULL) | |
149 | || (declaration != NULL && current->declaration != NULL | |
150 | && strcmp (declaration, current->declaration) != 0)) | |
151 | continue; | |
152 | ||
32019081 JK |
153 | /* Compare the contents of EXCLUDES. */ |
154 | for (ix = 0; VEC_iterate (const_char_ptr, excludes, ix, param); ix++) | |
155 | if (current->excludes[ix] == NULL | |
156 | || strcmp (param, current->excludes[ix]) != 0) | |
157 | break; | |
158 | if (ix < VEC_length (const_char_ptr, excludes) | |
159 | || current->excludes[ix] != NULL) | |
160 | continue; | |
161 | ||
70c622a3 JK |
162 | /* Parameters exactly match CURRENT. */ |
163 | return; | |
9219021c DC |
164 | } |
165 | ||
32019081 JK |
166 | new = obstack_alloc (obstack, (sizeof (*new) |
167 | + (VEC_length (const_char_ptr, excludes) | |
168 | * sizeof (*new->excludes)))); | |
169 | memset (new, 0, sizeof (*new)); | |
c0cc3a76 | 170 | |
12aaed36 TT |
171 | if (copy_names) |
172 | { | |
173 | new->import_src = obstack_copy0 (obstack, src, strlen (src)); | |
174 | new->import_dest = obstack_copy0 (obstack, dest, strlen (dest)); | |
175 | } | |
176 | else | |
177 | { | |
178 | new->import_src = src; | |
179 | new->import_dest = dest; | |
180 | } | |
794684b6 | 181 | |
12aaed36 | 182 | if (alias != NULL && copy_names) |
10f0c4bb | 183 | new->alias = obstack_copy0 (obstack, alias, strlen (alias)); |
12aaed36 TT |
184 | else |
185 | new->alias = alias; | |
c0cc3a76 | 186 | |
12aaed36 | 187 | if (declaration != NULL && copy_names) |
10f0c4bb TT |
188 | new->declaration = obstack_copy0 (obstack, |
189 | declaration, strlen (declaration)); | |
12aaed36 TT |
190 | else |
191 | new->declaration = declaration; | |
13387711 | 192 | |
32019081 JK |
193 | memcpy (new->excludes, VEC_address (const_char_ptr, excludes), |
194 | VEC_length (const_char_ptr, excludes) * sizeof (*new->excludes)); | |
195 | new->excludes[VEC_length (const_char_ptr, excludes)] = NULL; | |
196 | ||
c0cc3a76 SW |
197 | new->next = using_directives; |
198 | using_directives = new; | |
9219021c DC |
199 | } |
200 | ||
9219021c DC |
201 | /* Test whether or not NAMESPACE looks like it mentions an anonymous |
202 | namespace; return nonzero if so. */ | |
203 | ||
204 | int | |
59da4d04 | 205 | cp_is_in_anonymous (const char *symbol_name) |
9219021c | 206 | { |
59da4d04 | 207 | return (strstr (symbol_name, CP_ANONYMOUS_NAMESPACE_STR) |
9219021c DC |
208 | != NULL); |
209 | } | |
210 | ||
6f27419a DE |
211 | /* Look up NAME in DOMAIN in BLOCK's static block and in global blocks. |
212 | If ANONYMOUS_NAMESPACE is nonzero, the symbol in question is located | |
213 | within an anonymous namespace. */ | |
34ef8452 DE |
214 | |
215 | static struct symbol * | |
6f27419a DE |
216 | cp_basic_lookup_symbol (const char *name, const struct block *block, |
217 | const domain_enum domain, int anonymous_namespace) | |
34ef8452 | 218 | { |
6f27419a | 219 | struct symbol *sym; |
34ef8452 DE |
220 | |
221 | sym = lookup_symbol_in_static_block (name, block, domain); | |
222 | if (sym != NULL) | |
223 | return sym; | |
224 | ||
225 | if (anonymous_namespace) | |
226 | { | |
227 | /* Symbols defined in anonymous namespaces have external linkage | |
228 | but should be treated as local to a single file nonetheless. | |
229 | So we only search the current file's global block. */ | |
230 | ||
231 | const struct block *global_block = block_global_block (block); | |
791244be | 232 | |
34ef8452 DE |
233 | if (global_block != NULL) |
234 | sym = lookup_symbol_in_block (name, global_block, domain); | |
235 | } | |
236 | else | |
237 | { | |
238 | sym = lookup_global_symbol (name, block, domain); | |
239 | } | |
240 | ||
6f27419a DE |
241 | return sym; |
242 | } | |
243 | ||
244 | /* Search bare symbol NAME in DOMAIN in BLOCK. | |
1994afbf DE |
245 | NAME is guaranteed to not have any scope (no "::") in its name, though |
246 | if for example NAME is a template spec then "::" may appear in the | |
247 | argument list. | |
248 | If LANGDEF is non-NULL then try to lookup NAME as a primitive type in | |
249 | that language. Normally we wouldn't need LANGDEF but fortran also uses | |
250 | this code. | |
6f27419a DE |
251 | If SEARCH is non-zero then see if we can determine "this" from BLOCK, and |
252 | if so then also search for NAME in that class. */ | |
253 | ||
254 | static struct symbol * | |
1994afbf DE |
255 | cp_lookup_bare_symbol (const struct language_defn *langdef, |
256 | const char *name, const struct block *block, | |
6f27419a DE |
257 | const domain_enum domain, int search) |
258 | { | |
259 | struct symbol *sym; | |
260 | ||
261 | /* Note: We can't do a simple assert for ':' not being in NAME because | |
262 | ':' may be in the args of a template spec. This isn't intended to be | |
263 | a complete test, just cheap and documentary. */ | |
264 | if (strchr (name, '<') == NULL && strchr (name, '(') == NULL) | |
265 | gdb_assert (strchr (name, ':') == NULL); | |
266 | ||
267 | sym = lookup_symbol_in_static_block (name, block, domain); | |
268 | if (sym != NULL) | |
269 | return sym; | |
270 | ||
1994afbf DE |
271 | /* If we didn't find a definition for a builtin type in the static block, |
272 | search for it now. This is actually the right thing to do and can be | |
273 | a massive performance win. E.g., when debugging a program with lots of | |
274 | shared libraries we could search all of them only to find out the | |
275 | builtin type isn't defined in any of them. This is common for types | |
276 | like "void". */ | |
277 | if (langdef != NULL && domain == VAR_DOMAIN) | |
278 | { | |
279 | struct gdbarch *gdbarch; | |
280 | ||
281 | if (block == NULL) | |
282 | gdbarch = target_gdbarch (); | |
283 | else | |
284 | gdbarch = block_gdbarch (block); | |
285 | sym = language_lookup_primitive_type_as_symbol (langdef, gdbarch, name); | |
286 | if (sym != NULL) | |
287 | return sym; | |
288 | } | |
289 | ||
6f27419a | 290 | sym = lookup_global_symbol (name, block, domain); |
34ef8452 DE |
291 | if (sym != NULL) |
292 | return sym; | |
293 | ||
294 | if (search) | |
295 | { | |
6f27419a DE |
296 | struct symbol *this; |
297 | struct type *type; | |
34ef8452 | 298 | |
6f27419a DE |
299 | this = lookup_language_this (language_def (language_cplus), block); |
300 | if (this == NULL) | |
301 | return NULL; | |
34ef8452 | 302 | |
6f27419a DE |
303 | type = check_typedef (TYPE_TARGET_TYPE (SYMBOL_TYPE (this))); |
304 | /* If TYPE_NAME is NULL, abandon trying to find this symbol. | |
305 | This can happen for lambda functions compiled with clang++, | |
306 | which outputs no name for the container class. */ | |
307 | if (TYPE_NAME (type) == NULL) | |
308 | return NULL; | |
34ef8452 | 309 | |
6f27419a DE |
310 | /* Look for a symbol named NESTED in this class. */ |
311 | sym = cp_lookup_nested_symbol (type, name, block); | |
312 | } | |
34ef8452 | 313 | |
6f27419a DE |
314 | return sym; |
315 | } | |
34ef8452 | 316 | |
6f27419a DE |
317 | /* Search NAME in DOMAIN in all static blocks, and then in all baseclasses. |
318 | BLOCK specifies the context in which to perform the search. | |
319 | NAME is guaranteed to have scope (contain "::") and PREFIX_LEN specifies | |
320 | then length the entire scope of NAME (up to, but not including, the last | |
321 | "::". | |
34ef8452 | 322 | |
6f27419a DE |
323 | Note: At least in the case of Fortran, which also uses this code, there |
324 | may be no text after the last "::". */ | |
34ef8452 | 325 | |
6f27419a DE |
326 | static struct symbol * |
327 | cp_search_static_and_baseclasses (const char *name, | |
328 | const struct block *block, | |
329 | const domain_enum domain, | |
330 | unsigned int prefix_len) | |
331 | { | |
332 | struct symbol *sym; | |
333 | char *klass, *nested; | |
334 | struct cleanup *cleanup; | |
335 | struct symbol *klass_sym; | |
336 | struct type *klass_type; | |
34ef8452 | 337 | |
6f27419a DE |
338 | /* The test here uses <= instead of < because Fortran also uses this, |
339 | and the module.exp testcase will pass "modmany::" for NAME here. */ | |
340 | gdb_assert (prefix_len + 2 <= strlen (name)); | |
341 | gdb_assert (name[prefix_len + 1] == ':'); | |
34ef8452 | 342 | |
6f27419a | 343 | /* Find the name of the class and the name of the method, variable, etc. */ |
34ef8452 | 344 | |
6f27419a DE |
345 | /* The class name is everything up to and including PREFIX_LEN. */ |
346 | klass = savestring (name, prefix_len); | |
347 | ||
348 | /* The rest of the name is everything else past the initial scope | |
349 | operator. */ | |
350 | nested = xstrdup (name + prefix_len + 2); | |
351 | ||
352 | /* Add cleanups to free memory for these strings. */ | |
353 | cleanup = make_cleanup (xfree, klass); | |
354 | make_cleanup (xfree, nested); | |
355 | ||
356 | /* Lookup a class named KLASS. If none is found, there is nothing | |
357 | more that can be done. */ | |
358 | klass_sym = lookup_global_symbol (klass, block, domain); | |
359 | if (klass_sym == NULL) | |
360 | { | |
34ef8452 | 361 | do_cleanups (cleanup); |
6f27419a | 362 | return NULL; |
34ef8452 | 363 | } |
6f27419a DE |
364 | klass_type = SYMBOL_TYPE (klass_sym); |
365 | ||
366 | /* Look for a symbol named NESTED in this class. | |
367 | The caller is assumed to have already have done a basic lookup of NAME. | |
368 | So we pass zero for BASIC_LOOKUP to cp_lookup_nested_symbol_1 here. */ | |
369 | sym = cp_lookup_nested_symbol_1 (klass_type, nested, name, block, 0); | |
34ef8452 | 370 | |
6f27419a | 371 | do_cleanups (cleanup); |
34ef8452 DE |
372 | return sym; |
373 | } | |
374 | ||
aff410f1 | 375 | /* Look up NAME in the C++ namespace NAMESPACE. Other arguments are |
8dea366b | 376 | as in cp_lookup_symbol_nonlocal. If SEARCH is non-zero, search |
6f27419a DE |
377 | through base classes for a matching symbol. |
378 | ||
379 | Note: Part of the complexity is because NAME may itself specify scope. | |
380 | Part of the complexity is also because this handles the case where | |
381 | there is no scoping in which case we also try looking in the class of | |
382 | "this" if we can compute it. */ | |
8540c487 SW |
383 | |
384 | static struct symbol * | |
6f27419a DE |
385 | cp_lookup_symbol_in_namespace (const char *namespace, const char *name, |
386 | const struct block *block, | |
387 | const domain_enum domain, int search) | |
8540c487 | 388 | { |
d2763117 | 389 | char *concatenated_name = NULL; |
6f27419a DE |
390 | int is_in_anonymous; |
391 | unsigned int prefix_len; | |
392 | struct symbol *sym; | |
c5504eaf | 393 | |
d2763117 DE |
394 | if (namespace[0] != '\0') |
395 | { | |
396 | concatenated_name = alloca (strlen (namespace) + 2 | |
397 | + strlen (name) + 1); | |
8540c487 SW |
398 | strcpy (concatenated_name, namespace); |
399 | strcat (concatenated_name, "::"); | |
400 | strcat (concatenated_name, name); | |
d2763117 | 401 | name = concatenated_name; |
8540c487 | 402 | } |
d2763117 | 403 | |
6f27419a DE |
404 | prefix_len = cp_entire_prefix_len (name); |
405 | if (prefix_len == 0) | |
1994afbf | 406 | return cp_lookup_bare_symbol (NULL, name, block, domain, search); |
6f27419a DE |
407 | |
408 | /* This would be simpler if we just called cp_lookup_nested_symbol | |
409 | at this point. But that would require first looking up the containing | |
410 | class/namespace. Since we're only searching static and global blocks | |
411 | there's often no need to first do that lookup. */ | |
412 | ||
413 | is_in_anonymous = namespace[0] != '\0' && cp_is_in_anonymous (namespace); | |
414 | sym = cp_basic_lookup_symbol (name, block, domain, is_in_anonymous); | |
415 | if (sym != NULL) | |
416 | return sym; | |
417 | ||
418 | if (search) | |
419 | sym = cp_search_static_and_baseclasses (name, block, domain, prefix_len); | |
420 | ||
421 | return sym; | |
8540c487 SW |
422 | } |
423 | ||
b14e635e SW |
424 | /* Used for cleanups to reset the "searched" flag incase |
425 | of an error. */ | |
426 | ||
427 | static void | |
428 | reset_directive_searched (void *data) | |
429 | { | |
430 | struct using_direct *direct = data; | |
431 | direct->searched = 0; | |
432 | } | |
433 | ||
aff410f1 MS |
434 | /* Search for NAME by applying all import statements belonging to |
435 | BLOCK which are applicable in SCOPE. If DECLARATION_ONLY the | |
436 | search is restricted to using declarations. | |
13387711 SW |
437 | Example: |
438 | ||
aff410f1 | 439 | namespace A { |
13387711 SW |
440 | int x; |
441 | } | |
442 | using A::x; | |
443 | ||
aff410f1 MS |
444 | If SEARCH_PARENTS the search will include imports which are |
445 | applicable in parents of SCOPE. | |
b14e635e SW |
446 | Example: |
447 | ||
aff410f1 | 448 | namespace A { |
b14e635e | 449 | using namespace X; |
aff410f1 | 450 | namespace B { |
b14e635e SW |
451 | using namespace Y; |
452 | } | |
453 | } | |
454 | ||
aff410f1 MS |
455 | If SCOPE is "A::B" and SEARCH_PARENTS is true the imports of |
456 | namespaces X and Y will be considered. If SEARCH_PARENTS is false | |
4bd0864e DE |
457 | only the import of Y is considered. |
458 | ||
459 | SEARCH_SCOPE_FIRST is an internal implementation detail: Callers must | |
460 | pass 0 for it. Internally we pass 1 when recursing. */ | |
8540c487 | 461 | |
9a80057a | 462 | static struct symbol * |
55accf4a DE |
463 | cp_lookup_symbol_via_imports (const char *scope, |
464 | const char *name, | |
465 | const struct block *block, | |
466 | const domain_enum domain, | |
4bd0864e | 467 | const int search_scope_first, |
55accf4a DE |
468 | const int declaration_only, |
469 | const int search_parents) | |
8540c487 | 470 | { |
b14e635e | 471 | struct using_direct *current; |
13387711 | 472 | struct symbol *sym = NULL; |
8540c487 | 473 | int len; |
b14e635e SW |
474 | int directive_match; |
475 | struct cleanup *searched_cleanup; | |
8540c487 | 476 | |
4bd0864e DE |
477 | /* First, try to find the symbol in the given namespace if requested. */ |
478 | if (search_scope_first) | |
aff410f1 | 479 | sym = cp_lookup_symbol_in_namespace (scope, name, |
8dea366b | 480 | block, domain, 1); |
791244be | 481 | |
8540c487 SW |
482 | if (sym != NULL) |
483 | return sym; | |
484 | ||
aff410f1 MS |
485 | /* Go through the using directives. If any of them add new names to |
486 | the namespace we're searching in, see if we can find a match by | |
487 | applying them. */ | |
8540c487 SW |
488 | |
489 | for (current = block_using (block); | |
490 | current != NULL; | |
491 | current = current->next) | |
492 | { | |
32019081 JK |
493 | const char **excludep; |
494 | ||
b14e635e SW |
495 | len = strlen (current->import_dest); |
496 | directive_match = (search_parents | |
497 | ? (strncmp (scope, current->import_dest, | |
498 | strlen (current->import_dest)) == 0 | |
499 | && (len == 0 | |
aff410f1 MS |
500 | || scope[len] == ':' |
501 | || scope[len] == '\0')) | |
b14e635e | 502 | : strcmp (scope, current->import_dest) == 0); |
8540c487 | 503 | |
aff410f1 MS |
504 | /* If the import destination is the current scope or one of its |
505 | ancestors then it is applicable. */ | |
b14e635e | 506 | if (directive_match && !current->searched) |
8540c487 | 507 | { |
a1d705ee TT |
508 | /* Mark this import as searched so that the recursive call |
509 | does not search it again. */ | |
510 | current->searched = 1; | |
511 | searched_cleanup = make_cleanup (reset_directive_searched, | |
512 | current); | |
513 | ||
514 | /* If there is an import of a single declaration, compare the | |
515 | imported declaration (after optional renaming by its alias) | |
516 | with the sought out name. If there is a match pass | |
517 | current->import_src as NAMESPACE to direct the search | |
518 | towards the imported namespace. */ | |
519 | if (current->declaration | |
520 | && strcmp (name, current->alias | |
521 | ? current->alias : current->declaration) == 0) | |
522 | sym = cp_lookup_symbol_in_namespace (current->import_src, | |
523 | current->declaration, | |
8dea366b | 524 | block, domain, 1); |
a1d705ee TT |
525 | |
526 | /* If this is a DECLARATION_ONLY search or a symbol was found | |
527 | or this import statement was an import declaration, the | |
528 | search of this import is complete. */ | |
529 | if (declaration_only || sym != NULL || current->declaration) | |
530 | { | |
531 | current->searched = 0; | |
532 | discard_cleanups (searched_cleanup); | |
533 | ||
534 | if (sym != NULL) | |
535 | return sym; | |
536 | ||
537 | continue; | |
538 | } | |
539 | ||
540 | /* Do not follow CURRENT if NAME matches its EXCLUDES. */ | |
541 | for (excludep = current->excludes; *excludep; excludep++) | |
542 | if (strcmp (name, *excludep) == 0) | |
543 | break; | |
544 | if (*excludep) | |
545 | { | |
546 | discard_cleanups (searched_cleanup); | |
547 | continue; | |
548 | } | |
549 | ||
550 | if (current->alias != NULL | |
551 | && strcmp (name, current->alias) == 0) | |
552 | /* If the import is creating an alias and the alias matches | |
553 | the sought name. Pass current->import_src as the NAME to | |
554 | direct the search towards the aliased namespace. */ | |
555 | { | |
556 | sym = cp_lookup_symbol_in_namespace (scope, | |
557 | current->import_src, | |
8dea366b | 558 | block, domain, 1); |
a1d705ee TT |
559 | } |
560 | else if (current->alias == NULL) | |
561 | { | |
562 | /* If this import statement creates no alias, pass | |
563 | current->inner as NAMESPACE to direct the search | |
564 | towards the imported namespace. */ | |
55accf4a DE |
565 | sym = cp_lookup_symbol_via_imports (current->import_src, |
566 | name, block, | |
4bd0864e | 567 | domain, 1, 0, 0); |
a1d705ee TT |
568 | } |
569 | current->searched = 0; | |
570 | discard_cleanups (searched_cleanup); | |
571 | ||
572 | if (sym != NULL) | |
573 | return sym; | |
8540c487 SW |
574 | } |
575 | } | |
576 | ||
577 | return NULL; | |
578 | } | |
579 | ||
34eaf542 TT |
580 | /* Helper function that searches an array of symbols for one named |
581 | NAME. */ | |
582 | ||
583 | static struct symbol * | |
aff410f1 MS |
584 | search_symbol_list (const char *name, int num, |
585 | struct symbol **syms) | |
34eaf542 TT |
586 | { |
587 | int i; | |
588 | ||
589 | /* Maybe we should store a dictionary in here instead. */ | |
590 | for (i = 0; i < num; ++i) | |
591 | { | |
592 | if (strcmp (name, SYMBOL_NATURAL_NAME (syms[i])) == 0) | |
593 | return syms[i]; | |
594 | } | |
595 | return NULL; | |
596 | } | |
597 | ||
55accf4a | 598 | /* Like cp_lookup_symbol_via_imports, but if BLOCK is a function, it |
34eaf542 TT |
599 | searches through the template parameters of the function and the |
600 | function's type. */ | |
601 | ||
602 | struct symbol * | |
603 | cp_lookup_symbol_imports_or_template (const char *scope, | |
604 | const char *name, | |
605 | const struct block *block, | |
606 | const domain_enum domain) | |
607 | { | |
608 | struct symbol *function = BLOCK_FUNCTION (block); | |
cc485e62 DE |
609 | struct symbol *result; |
610 | ||
611 | if (symbol_lookup_debug) | |
612 | { | |
613 | fprintf_unfiltered (gdb_stdlog, | |
614 | "cp_lookup_symbol_imports_or_template" | |
615 | " (%s, %s, %s, %s)\n", | |
616 | scope, name, host_address_to_string (block), | |
617 | domain_name (domain)); | |
618 | } | |
34eaf542 TT |
619 | |
620 | if (function != NULL && SYMBOL_LANGUAGE (function) == language_cplus) | |
621 | { | |
34eaf542 TT |
622 | /* Search the function's template parameters. */ |
623 | if (SYMBOL_IS_CPLUS_TEMPLATE_FUNCTION (function)) | |
624 | { | |
791244be | 625 | struct template_symbol *templ |
aff410f1 | 626 | = (struct template_symbol *) function; |
34eaf542 TT |
627 | |
628 | result = search_symbol_list (name, | |
629 | templ->n_template_arguments, | |
630 | templ->template_arguments); | |
631 | if (result != NULL) | |
cc485e62 DE |
632 | { |
633 | if (symbol_lookup_debug) | |
634 | { | |
635 | fprintf_unfiltered (gdb_stdlog, | |
636 | "cp_lookup_symbol_imports_or_template" | |
637 | " (...) = %s\n", | |
638 | host_address_to_string (result)); | |
639 | } | |
640 | return result; | |
641 | } | |
34eaf542 TT |
642 | } |
643 | ||
644 | /* Search the template parameters of the function's defining | |
645 | context. */ | |
646 | if (SYMBOL_NATURAL_NAME (function)) | |
647 | { | |
648 | struct type *context; | |
649 | char *name_copy = xstrdup (SYMBOL_NATURAL_NAME (function)); | |
650 | struct cleanup *cleanups = make_cleanup (xfree, name_copy); | |
651 | const struct language_defn *lang = language_def (language_cplus); | |
08be3fe3 | 652 | struct gdbarch *arch = symbol_arch (function); |
34eaf542 TT |
653 | const struct block *parent = BLOCK_SUPERBLOCK (block); |
654 | ||
655 | while (1) | |
656 | { | |
34eaf542 TT |
657 | unsigned int prefix_len = cp_entire_prefix_len (name_copy); |
658 | ||
659 | if (prefix_len == 0) | |
660 | context = NULL; | |
661 | else | |
662 | { | |
663 | name_copy[prefix_len] = '\0'; | |
aff410f1 MS |
664 | context = lookup_typename (lang, arch, |
665 | name_copy, | |
666 | parent, 1); | |
34eaf542 TT |
667 | } |
668 | ||
669 | if (context == NULL) | |
670 | break; | |
671 | ||
aff410f1 MS |
672 | result |
673 | = search_symbol_list (name, | |
674 | TYPE_N_TEMPLATE_ARGUMENTS (context), | |
675 | TYPE_TEMPLATE_ARGUMENTS (context)); | |
34eaf542 | 676 | if (result != NULL) |
c27e16e3 TT |
677 | { |
678 | do_cleanups (cleanups); | |
cc485e62 DE |
679 | if (symbol_lookup_debug) |
680 | { | |
681 | fprintf_unfiltered (gdb_stdlog, | |
682 | "cp_lookup_symbol_imports_or_template" | |
683 | " (...) = %s\n", | |
684 | host_address_to_string (result)); | |
685 | } | |
c27e16e3 TT |
686 | return result; |
687 | } | |
34eaf542 TT |
688 | } |
689 | ||
690 | do_cleanups (cleanups); | |
691 | } | |
692 | } | |
693 | ||
4bd0864e | 694 | result = cp_lookup_symbol_via_imports (scope, name, block, domain, 0, 1, 1); |
cc485e62 DE |
695 | if (symbol_lookup_debug) |
696 | { | |
697 | fprintf_unfiltered (gdb_stdlog, | |
698 | "cp_lookup_symbol_imports_or_template (...) = %s\n", | |
699 | result != NULL | |
700 | ? host_address_to_string (result) : "NULL"); | |
701 | } | |
702 | return result; | |
34eaf542 TT |
703 | } |
704 | ||
f953163f DE |
705 | /* Search for NAME by applying relevant import statements belonging to BLOCK |
706 | and its parents. SCOPE is the namespace scope of the context in which the | |
707 | search is being evaluated. */ | |
708 | ||
709 | static struct symbol * | |
710 | cp_lookup_symbol_via_all_imports (const char *scope, const char *name, | |
711 | const struct block *block, | |
712 | const domain_enum domain) | |
713 | { | |
714 | struct symbol *sym; | |
715 | ||
716 | while (block != NULL) | |
717 | { | |
718 | sym = cp_lookup_symbol_via_imports (scope, name, block, domain, 0, 0, 1); | |
719 | if (sym) | |
720 | return sym; | |
721 | ||
722 | block = BLOCK_SUPERBLOCK (block); | |
723 | } | |
724 | ||
725 | return NULL; | |
726 | } | |
727 | ||
791244be DE |
728 | /* Searches for NAME in the current namespace, and by applying |
729 | relevant import statements belonging to BLOCK and its parents. | |
730 | SCOPE is the namespace scope of the context in which the search is | |
731 | being evaluated. */ | |
8540c487 | 732 | |
f953163f | 733 | struct symbol * |
8540c487 SW |
734 | cp_lookup_symbol_namespace (const char *scope, |
735 | const char *name, | |
8540c487 | 736 | const struct block *block, |
13387711 | 737 | const domain_enum domain) |
8540c487 SW |
738 | { |
739 | struct symbol *sym; | |
cc485e62 DE |
740 | |
741 | if (symbol_lookup_debug) | |
742 | { | |
743 | fprintf_unfiltered (gdb_stdlog, | |
744 | "cp_lookup_symbol_namespace (%s, %s, %s, %s)\n", | |
745 | scope, name, host_address_to_string (block), | |
746 | domain_name (domain)); | |
747 | } | |
748 | ||
13387711 | 749 | /* First, try to find the symbol in the given namespace. */ |
f953163f | 750 | sym = cp_lookup_symbol_in_namespace (scope, name, block, domain, 1); |
8540c487 | 751 | |
f953163f DE |
752 | /* Search for name in namespaces imported to this and parent blocks. */ |
753 | if (sym == NULL) | |
754 | sym = cp_lookup_symbol_via_all_imports (scope, name, block, domain); | |
8540c487 | 755 | |
cc485e62 DE |
756 | if (symbol_lookup_debug) |
757 | { | |
758 | fprintf_unfiltered (gdb_stdlog, | |
f953163f DE |
759 | "cp_lookup_symbol_namespace (...) = %s\n", |
760 | sym != NULL ? host_address_to_string (sym) : "NULL"); | |
cc485e62 | 761 | } |
f953163f | 762 | return sym; |
1fcb5155 DC |
763 | } |
764 | ||
765 | /* Lookup NAME at namespace scope (or, in C terms, in static and | |
766 | global variables). SCOPE is the namespace that the current | |
767 | function is defined within; only consider namespaces whose length | |
768 | is at least SCOPE_LEN. Other arguments are as in | |
769 | cp_lookup_symbol_nonlocal. | |
770 | ||
771 | For example, if we're within a function A::B::f and looking for a | |
3882f37a | 772 | symbol x, this will get called with NAME = "x", SCOPE = "A::B", and |
1fcb5155 DC |
773 | SCOPE_LEN = 0. It then calls itself with NAME and SCOPE the same, |
774 | but with SCOPE_LEN = 1. And then it calls itself with NAME and | |
775 | SCOPE the same, but with SCOPE_LEN = 4. This third call looks for | |
776 | "A::B::x"; if it doesn't find it, then the second call looks for | |
777 | "A::x", and if that call fails, then the first call looks for | |
778 | "x". */ | |
779 | ||
780 | static struct symbol * | |
1994afbf DE |
781 | lookup_namespace_scope (const struct language_defn *langdef, |
782 | const char *name, | |
1fcb5155 DC |
783 | const struct block *block, |
784 | const domain_enum domain, | |
1fcb5155 DC |
785 | const char *scope, |
786 | int scope_len) | |
787 | { | |
788 | char *namespace; | |
789 | ||
790 | if (scope[scope_len] != '\0') | |
791 | { | |
792 | /* Recursively search for names in child namespaces first. */ | |
793 | ||
794 | struct symbol *sym; | |
795 | int new_scope_len = scope_len; | |
796 | ||
797 | /* If the current scope is followed by "::", skip past that. */ | |
798 | if (new_scope_len != 0) | |
799 | { | |
800 | gdb_assert (scope[new_scope_len] == ':'); | |
801 | new_scope_len += 2; | |
802 | } | |
803 | new_scope_len += cp_find_first_component (scope + new_scope_len); | |
1994afbf | 804 | sym = lookup_namespace_scope (langdef, name, block, domain, |
aff410f1 | 805 | scope, new_scope_len); |
1fcb5155 DC |
806 | if (sym != NULL) |
807 | return sym; | |
808 | } | |
809 | ||
810 | /* Okay, we didn't find a match in our children, so look for the | |
1994afbf DE |
811 | name in the current namespace. |
812 | ||
813 | If we there is no scope and we know we have a bare symbol, then short | |
814 | circuit everything and call cp_lookup_bare_symbol directly. | |
815 | This isn't an optimization, rather it allows us to pass LANGDEF which | |
816 | is needed for primitive type lookup. The test doesn't have to be | |
817 | perfect: if NAME is a bare symbol that our test doesn't catch (e.g., a | |
818 | template symbol with "::" in the argument list) then | |
819 | cp_lookup_symbol_in_namespace will catch it. */ | |
820 | ||
821 | if (scope_len == 0 && strchr (name, ':') == NULL) | |
822 | return cp_lookup_bare_symbol (langdef, name, block, domain, 1); | |
1fcb5155 DC |
823 | |
824 | namespace = alloca (scope_len + 1); | |
825 | strncpy (namespace, scope, scope_len); | |
826 | namespace[scope_len] = '\0'; | |
aff410f1 | 827 | return cp_lookup_symbol_in_namespace (namespace, name, |
8dea366b | 828 | block, domain, 1); |
1fcb5155 DC |
829 | } |
830 | ||
56286edf DE |
831 | /* The C++-specific version of name lookup for static and global |
832 | names. This makes sure that names get looked for in all namespaces | |
833 | that are in scope. NAME is the natural name of the symbol that | |
834 | we're looking for, BLOCK is the block that we're searching within, | |
835 | DOMAIN says what kind of symbols we're looking for. */ | |
836 | ||
837 | struct symbol * | |
f606139a DE |
838 | cp_lookup_symbol_nonlocal (const struct language_defn *langdef, |
839 | const char *name, | |
56286edf DE |
840 | const struct block *block, |
841 | const domain_enum domain) | |
842 | { | |
843 | struct symbol *sym; | |
844 | const char *scope = block_scope (block); | |
845 | ||
cc485e62 DE |
846 | if (symbol_lookup_debug) |
847 | { | |
848 | fprintf_unfiltered (gdb_stdlog, | |
849 | "cp_lookup_symbol_non_local" | |
850 | " (%s, %s (scope %s), %s)\n", | |
851 | name, host_address_to_string (block), scope, | |
852 | domain_name (domain)); | |
853 | } | |
854 | ||
f953163f DE |
855 | /* First, try to find the symbol in the given namespace, and all |
856 | containing namespaces. */ | |
1994afbf | 857 | sym = lookup_namespace_scope (langdef, name, block, domain, scope, 0); |
56286edf | 858 | |
f953163f DE |
859 | /* Search for name in namespaces imported to this and parent blocks. */ |
860 | if (sym == NULL) | |
861 | sym = cp_lookup_symbol_via_all_imports (scope, name, block, domain); | |
862 | ||
cc485e62 DE |
863 | if (symbol_lookup_debug) |
864 | { | |
865 | fprintf_unfiltered (gdb_stdlog, | |
866 | "cp_lookup_symbol_nonlocal (...) = %s\n", | |
867 | sym != NULL ? host_address_to_string (sym) : "NULL"); | |
868 | } | |
869 | return sym; | |
56286edf DE |
870 | } |
871 | ||
f7e3ecae KS |
872 | /* Search through the base classes of PARENT_TYPE for a base class |
873 | named NAME and return its type. If not found, return NULL. */ | |
874 | ||
875 | struct type * | |
a07e3e18 | 876 | cp_find_type_baseclass_by_name (struct type *parent_type, const char *name) |
f7e3ecae KS |
877 | { |
878 | int i; | |
879 | ||
880 | CHECK_TYPEDEF (parent_type); | |
881 | for (i = 0; i < TYPE_N_BASECLASSES (parent_type); ++i) | |
882 | { | |
883 | struct type *type = check_typedef (TYPE_BASECLASS (parent_type, i)); | |
884 | const char *base_name = TYPE_BASECLASS_NAME (parent_type, i); | |
885 | ||
886 | if (base_name == NULL) | |
887 | continue; | |
888 | ||
889 | if (streq (base_name, name)) | |
890 | return type; | |
891 | ||
a07e3e18 | 892 | type = cp_find_type_baseclass_by_name (type, name); |
f7e3ecae KS |
893 | if (type != NULL) |
894 | return type; | |
895 | } | |
896 | ||
897 | return NULL; | |
898 | } | |
899 | ||
8dea366b KS |
900 | /* Search through the base classes of PARENT_TYPE for a symbol named |
901 | NAME in block BLOCK. */ | |
902 | ||
903 | static struct symbol * | |
904 | find_symbol_in_baseclass (struct type *parent_type, const char *name, | |
905 | const struct block *block) | |
906 | { | |
907 | int i; | |
908 | struct symbol *sym; | |
909 | struct cleanup *cleanup; | |
910 | char *concatenated_name; | |
911 | ||
912 | sym = NULL; | |
913 | concatenated_name = NULL; | |
914 | cleanup = make_cleanup (free_current_contents, &concatenated_name); | |
791244be | 915 | |
8dea366b KS |
916 | for (i = 0; i < TYPE_N_BASECLASSES (parent_type); ++i) |
917 | { | |
918 | size_t len; | |
69fc87c2 | 919 | struct type *base_type = TYPE_BASECLASS (parent_type, i); |
8dea366b KS |
920 | const char *base_name = TYPE_BASECLASS_NAME (parent_type, i); |
921 | ||
922 | if (base_name == NULL) | |
923 | continue; | |
924 | ||
8dea366b KS |
925 | len = strlen (base_name) + 2 + strlen (name) + 1; |
926 | concatenated_name = xrealloc (concatenated_name, len); | |
927 | xsnprintf (concatenated_name, len, "%s::%s", base_name, name); | |
8dea366b | 928 | |
6f27419a DE |
929 | sym = cp_lookup_nested_symbol_1 (base_type, name, concatenated_name, |
930 | block, 1); | |
69fc87c2 DE |
931 | if (sym != NULL) |
932 | break; | |
8dea366b KS |
933 | } |
934 | ||
935 | do_cleanups (cleanup); | |
0c2e6019 | 936 | return sym; |
5c4e30ca DC |
937 | } |
938 | ||
6f27419a DE |
939 | /* Helper function to look up NESTED_NAME in CONTAINER_TYPE within the |
940 | context of BLOCK. | |
941 | CONTAINER_TYPE needn't have been "check_typedef'd" yet. | |
942 | CONCATENATED_NAME is the fully scoped spelling of NESTED_NAME, it is | |
943 | passed as an argument so that callers can control how space for it is | |
944 | allocated. | |
945 | If BASIC_LOOKUP is non-zero then perform a basic lookup of | |
946 | CONCATENATED_NAME. See cp_basic_lookup_symbol for details. */ | |
947 | ||
948 | static struct symbol * | |
949 | cp_lookup_nested_symbol_1 (struct type *container_type, | |
950 | const char *nested_name, | |
951 | const char *concatenated_name, | |
952 | const struct block *block, | |
953 | int basic_lookup) | |
954 | { | |
955 | int is_in_anonymous = cp_is_in_anonymous (concatenated_name); | |
956 | struct symbol *sym; | |
957 | ||
958 | /* NOTE: carlton/2003-11-10: We don't treat C++ class members | |
959 | of classes like, say, data or function members. Instead, | |
960 | they're just represented by symbols whose names are | |
961 | qualified by the name of the surrounding class. This is | |
962 | just like members of namespaces; in particular, | |
963 | cp_basic_lookup_symbol works when looking them up. */ | |
964 | ||
965 | if (basic_lookup) | |
966 | { | |
967 | sym = cp_basic_lookup_symbol (concatenated_name, block, VAR_DOMAIN, | |
968 | is_in_anonymous); | |
969 | if (sym != NULL) | |
970 | return sym; | |
971 | } | |
972 | ||
973 | /* Now search all static file-level symbols. We have to do this for things | |
974 | like typedefs in the class. We do not try to guess any imported | |
975 | namespace as even the fully specified namespace search is already not | |
976 | C++ compliant and more assumptions could make it too magic. */ | |
977 | ||
978 | /* First search in this symtab, what we want is possibly there. */ | |
979 | sym = lookup_symbol_in_static_block (concatenated_name, block, VAR_DOMAIN); | |
980 | if (sym != NULL) | |
981 | return sym; | |
982 | ||
983 | /* Nope. We now have to search all static blocks in all objfiles, | |
984 | even if block != NULL, because there's no guarantees as to which | |
985 | symtab the symbol we want is in. */ | |
986 | sym = lookup_static_symbol (concatenated_name, VAR_DOMAIN); | |
987 | if (sym != NULL) | |
988 | return sym; | |
989 | ||
990 | /* If this is a class with baseclasses, search them next. */ | |
991 | CHECK_TYPEDEF (container_type); | |
992 | if (TYPE_N_BASECLASSES (container_type) > 0) | |
993 | { | |
994 | sym = find_symbol_in_baseclass (container_type, nested_name, block); | |
995 | if (sym != NULL) | |
996 | return sym; | |
997 | } | |
998 | ||
999 | return NULL; | |
1000 | } | |
1001 | ||
50af5481 | 1002 | /* Look up a symbol named NESTED_NAME that is nested inside the C++ |
79c2c32d | 1003 | class or namespace given by PARENT_TYPE, from within the context |
05a6c3c8 | 1004 | given by BLOCK. Return NULL if there is no such nested symbol. */ |
79c2c32d | 1005 | |
50af5481 JK |
1006 | struct symbol * |
1007 | cp_lookup_nested_symbol (struct type *parent_type, | |
1008 | const char *nested_name, | |
1009 | const struct block *block) | |
79c2c32d | 1010 | { |
05a6c3c8 | 1011 | /* type_name_no_tag_or_error provides better error reporting using the |
d8228535 JK |
1012 | original type. */ |
1013 | struct type *saved_parent_type = parent_type; | |
1014 | ||
1015 | CHECK_TYPEDEF (parent_type); | |
1016 | ||
cc485e62 DE |
1017 | if (symbol_lookup_debug) |
1018 | { | |
1019 | const char *type_name = type_name_no_tag (saved_parent_type); | |
1020 | ||
1021 | fprintf_unfiltered (gdb_stdlog, | |
1022 | "cp_lookup_nested_symbol (%s, %s, %s)\n", | |
1023 | type_name != NULL ? type_name : "unnamed", | |
1024 | nested_name, host_address_to_string (block)); | |
1025 | } | |
1026 | ||
79c2c32d DC |
1027 | switch (TYPE_CODE (parent_type)) |
1028 | { | |
63d06c5c | 1029 | case TYPE_CODE_STRUCT: |
79c2c32d | 1030 | case TYPE_CODE_NAMESPACE: |
48e32051 | 1031 | case TYPE_CODE_UNION: |
3d567982 | 1032 | case TYPE_CODE_ENUM: |
530e8392 KB |
1033 | /* NOTE: Handle modules here as well, because Fortran is re-using the C++ |
1034 | specific code to lookup nested symbols in modules, by calling the | |
1035 | function pointer la_lookup_symbol_nonlocal, which ends up here. */ | |
1036 | case TYPE_CODE_MODULE: | |
79c2c32d | 1037 | { |
08850b56 | 1038 | int size; |
d8228535 | 1039 | const char *parent_name = type_name_no_tag_or_error (saved_parent_type); |
6f27419a | 1040 | struct symbol *sym; |
41f62f39 | 1041 | char *concatenated_name; |
c5504eaf | 1042 | |
08850b56 PM |
1043 | size = strlen (parent_name) + 2 + strlen (nested_name) + 1; |
1044 | concatenated_name = alloca (size); | |
1045 | xsnprintf (concatenated_name, size, "%s::%s", | |
6f27419a DE |
1046 | parent_name, nested_name); |
1047 | ||
1048 | sym = cp_lookup_nested_symbol_1 (parent_type, nested_name, | |
1049 | concatenated_name, block, 1); | |
41f62f39 | 1050 | |
cc485e62 DE |
1051 | if (symbol_lookup_debug) |
1052 | { | |
1053 | fprintf_unfiltered (gdb_stdlog, | |
1054 | "cp_lookup_nested_symbol (...) = %s\n", | |
1055 | sym != NULL | |
1056 | ? host_address_to_string (sym) : "NULL"); | |
1057 | } | |
1058 | return sym; | |
79c2c32d | 1059 | } |
bb869963 SDJ |
1060 | |
1061 | case TYPE_CODE_FUNC: | |
1062 | case TYPE_CODE_METHOD: | |
cc485e62 DE |
1063 | if (symbol_lookup_debug) |
1064 | { | |
1065 | fprintf_unfiltered (gdb_stdlog, | |
1066 | "cp_lookup_nested_symbol (...) = NULL" | |
1067 | " (func/method)\n"); | |
1068 | } | |
bb869963 SDJ |
1069 | return NULL; |
1070 | ||
79c2c32d DC |
1071 | default: |
1072 | internal_error (__FILE__, __LINE__, | |
50af5481 | 1073 | _("cp_lookup_nested_symbol called " |
3e43a32a | 1074 | "on a non-aggregate type.")); |
79c2c32d DC |
1075 | } |
1076 | } | |
1077 | ||
b368761e DC |
1078 | /* The C++-version of lookup_transparent_type. */ |
1079 | ||
1080 | /* FIXME: carlton/2004-01-16: The problem that this is trying to | |
1081 | address is that, unfortunately, sometimes NAME is wrong: it may not | |
1082 | include the name of namespaces enclosing the type in question. | |
b021a221 | 1083 | lookup_transparent_type gets called when the type in question |
b368761e DC |
1084 | is a declaration, and we're trying to find its definition; but, for |
1085 | declarations, our type name deduction mechanism doesn't work. | |
1086 | There's nothing we can do to fix this in general, I think, in the | |
1087 | absence of debug information about namespaces (I've filed PR | |
1088 | gdb/1511 about this); until such debug information becomes more | |
1089 | prevalent, one heuristic which sometimes looks is to search for the | |
1090 | definition in namespaces containing the current namespace. | |
1091 | ||
1092 | We should delete this functions once the appropriate debug | |
1093 | information becomes more widespread. (GCC 3.4 will be the first | |
1094 | released version of GCC with such information.) */ | |
1095 | ||
1096 | struct type * | |
1097 | cp_lookup_transparent_type (const char *name) | |
1098 | { | |
1099 | /* First, try the honest way of looking up the definition. */ | |
1100 | struct type *t = basic_lookup_transparent_type (name); | |
1101 | const char *scope; | |
1102 | ||
1103 | if (t != NULL) | |
1104 | return t; | |
1105 | ||
1106 | /* If that doesn't work and we're within a namespace, look there | |
1107 | instead. */ | |
1108 | scope = block_scope (get_selected_block (0)); | |
1109 | ||
1110 | if (scope[0] == '\0') | |
1111 | return NULL; | |
1112 | ||
1113 | return cp_lookup_transparent_type_loop (name, scope, 0); | |
1114 | } | |
1115 | ||
b021a221 MS |
1116 | /* Lookup the type definition associated to NAME in namespaces/classes |
1117 | containing SCOPE whose name is strictly longer than LENGTH. LENGTH | |
1118 | must be the index of the start of a component of SCOPE. */ | |
b368761e DC |
1119 | |
1120 | static struct type * | |
aff410f1 MS |
1121 | cp_lookup_transparent_type_loop (const char *name, |
1122 | const char *scope, | |
b368761e DC |
1123 | int length) |
1124 | { | |
1198ecbe | 1125 | int scope_length = length + cp_find_first_component (scope + length); |
b368761e DC |
1126 | char *full_name; |
1127 | ||
1128 | /* If the current scope is followed by "::", look in the next | |
1129 | component. */ | |
1130 | if (scope[scope_length] == ':') | |
1131 | { | |
1132 | struct type *retval | |
aff410f1 MS |
1133 | = cp_lookup_transparent_type_loop (name, scope, |
1134 | scope_length + 2); | |
c5504eaf | 1135 | |
b368761e DC |
1136 | if (retval != NULL) |
1137 | return retval; | |
1138 | } | |
1139 | ||
1140 | full_name = alloca (scope_length + 2 + strlen (name) + 1); | |
1141 | strncpy (full_name, scope, scope_length); | |
1142 | strncpy (full_name + scope_length, "::", 2); | |
1143 | strcpy (full_name + scope_length + 2, name); | |
1144 | ||
1145 | return basic_lookup_transparent_type (full_name); | |
1146 | } | |
1147 | ||
0c2e6019 TT |
1148 | /* This used to do something but was removed when it became |
1149 | obsolete. */ | |
5c4e30ca DC |
1150 | |
1151 | static void | |
1152 | maintenance_cplus_namespace (char *args, int from_tty) | |
1153 | { | |
0c2e6019 | 1154 | printf_unfiltered (_("The `maint namespace' command was removed.\n")); |
5c4e30ca DC |
1155 | } |
1156 | ||
2c0b251b PA |
1157 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
1158 | extern initialize_file_ftype _initialize_cp_namespace; | |
1159 | ||
5c4e30ca DC |
1160 | void |
1161 | _initialize_cp_namespace (void) | |
1162 | { | |
0c2e6019 TT |
1163 | struct cmd_list_element *cmd; |
1164 | ||
1165 | cmd = add_cmd ("namespace", class_maintenance, | |
1166 | maintenance_cplus_namespace, | |
1167 | _("Deprecated placeholder for removed functionality."), | |
1168 | &maint_cplus_cmd_list); | |
1169 | deprecate_cmd (cmd, NULL); | |
1fcb5155 | 1170 | } |