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9219021c | 1 | /* Helper routines for C++ support in GDB. |
61baf725 | 2 | Copyright (C) 2003-2017 Free Software Foundation, Inc. |
9219021c | 3 | |
1fcb5155 | 4 | Contributed by David Carlton and by Kealia, Inc. |
9219021c DC |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
9219021c DC |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
9219021c DC |
20 | |
21 | #include "defs.h" | |
22 | #include "cp-support.h" | |
23 | #include "gdb_obstack.h" | |
24 | #include "symtab.h" | |
25 | #include "symfile.h" | |
9219021c | 26 | #include "block.h" |
5c4e30ca DC |
27 | #include "objfiles.h" |
28 | #include "gdbtypes.h" | |
29 | #include "dictionary.h" | |
30 | #include "command.h" | |
b368761e | 31 | #include "frame.h" |
27aa8d6a | 32 | #include "buildsym.h" |
34eaf542 | 33 | #include "language.h" |
22cee43f | 34 | #include "namespace.h" |
05d49c37 | 35 | #include <string> |
9219021c | 36 | |
d12307c1 | 37 | static struct block_symbol |
6f27419a DE |
38 | cp_lookup_nested_symbol_1 (struct type *container_type, |
39 | const char *nested_name, | |
40 | const char *concatenated_name, | |
41 | const struct block *block, | |
4dcabcc2 | 42 | const domain_enum domain, |
96553a0c | 43 | int basic_lookup, int is_in_anonymous); |
6f27419a | 44 | |
b368761e DC |
45 | static struct type *cp_lookup_transparent_type_loop (const char *name, |
46 | const char *scope, | |
47 | int scope_len); | |
48 | ||
9219021c DC |
49 | /* Check to see if SYMBOL refers to an object contained within an |
50 | anonymous namespace; if so, add an appropriate using directive. */ | |
51 | ||
9219021c | 52 | void |
a10964d1 AR |
53 | cp_scan_for_anonymous_namespaces (const struct symbol *const symbol, |
54 | struct objfile *const objfile) | |
9219021c | 55 | { |
df8a16a1 | 56 | if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) |
9219021c | 57 | { |
df8a16a1 | 58 | const char *name = SYMBOL_DEMANGLED_NAME (symbol); |
9219021c DC |
59 | unsigned int previous_component; |
60 | unsigned int next_component; | |
9219021c DC |
61 | |
62 | /* Start with a quick-and-dirty check for mention of "(anonymous | |
63 | namespace)". */ | |
64 | ||
59da4d04 | 65 | if (!cp_is_in_anonymous (name)) |
9219021c DC |
66 | return; |
67 | ||
68 | previous_component = 0; | |
69 | next_component = cp_find_first_component (name + previous_component); | |
70 | ||
71 | while (name[next_component] == ':') | |
72 | { | |
2b1dbab0 KS |
73 | if (((next_component - previous_component) |
74 | == CP_ANONYMOUS_NAMESPACE_LEN) | |
9219021c | 75 | && strncmp (name + previous_component, |
2b1dbab0 KS |
76 | CP_ANONYMOUS_NAMESPACE_STR, |
77 | CP_ANONYMOUS_NAMESPACE_LEN) == 0) | |
9219021c | 78 | { |
aff410f1 MS |
79 | int dest_len = (previous_component == 0 |
80 | ? 0 : previous_component - 2); | |
8c902bb1 | 81 | int src_len = next_component; |
794684b6 | 82 | |
224c3ddb SM |
83 | char *dest = (char *) alloca (dest_len + 1); |
84 | char *src = (char *) alloca (src_len + 1); | |
794684b6 | 85 | |
8c902bb1 SW |
86 | memcpy (dest, name, dest_len); |
87 | memcpy (src, name, src_len); | |
794684b6 | 88 | |
8c902bb1 SW |
89 | dest[dest_len] = '\0'; |
90 | src[src_len] = '\0'; | |
794684b6 | 91 | |
9219021c DC |
92 | /* We've found a component of the name that's an |
93 | anonymous namespace. So add symbols in it to the | |
94 | namespace given by the previous component if there is | |
95 | one, or to the global namespace if there isn't. */ | |
eb1e02fd | 96 | std::vector<const char *> excludes; |
22cee43f | 97 | add_using_directive (&local_using_directives, |
eb1e02fd | 98 | dest, src, NULL, NULL, excludes, 1, |
22cee43f | 99 | &objfile->objfile_obstack); |
9219021c DC |
100 | } |
101 | /* The "+ 2" is for the "::". */ | |
102 | previous_component = next_component + 2; | |
103 | next_component = (previous_component | |
104 | + cp_find_first_component (name | |
105 | + previous_component)); | |
106 | } | |
107 | } | |
108 | } | |
109 | ||
9219021c DC |
110 | /* Test whether or not NAMESPACE looks like it mentions an anonymous |
111 | namespace; return nonzero if so. */ | |
112 | ||
113 | int | |
59da4d04 | 114 | cp_is_in_anonymous (const char *symbol_name) |
9219021c | 115 | { |
59da4d04 | 116 | return (strstr (symbol_name, CP_ANONYMOUS_NAMESPACE_STR) |
9219021c DC |
117 | != NULL); |
118 | } | |
119 | ||
6f27419a | 120 | /* Look up NAME in DOMAIN in BLOCK's static block and in global blocks. |
d5ff0482 | 121 | If IS_IN_ANONYMOUS is nonzero, the symbol in question is located |
6f27419a | 122 | within an anonymous namespace. */ |
34ef8452 | 123 | |
d12307c1 | 124 | static struct block_symbol |
6f27419a | 125 | cp_basic_lookup_symbol (const char *name, const struct block *block, |
d5ff0482 | 126 | const domain_enum domain, int is_in_anonymous) |
34ef8452 | 127 | { |
d12307c1 | 128 | struct block_symbol sym; |
34ef8452 DE |
129 | |
130 | sym = lookup_symbol_in_static_block (name, block, domain); | |
d12307c1 | 131 | if (sym.symbol != NULL) |
34ef8452 DE |
132 | return sym; |
133 | ||
d5ff0482 | 134 | if (is_in_anonymous) |
34ef8452 DE |
135 | { |
136 | /* Symbols defined in anonymous namespaces have external linkage | |
137 | but should be treated as local to a single file nonetheless. | |
138 | So we only search the current file's global block. */ | |
139 | ||
140 | const struct block *global_block = block_global_block (block); | |
791244be | 141 | |
34ef8452 | 142 | if (global_block != NULL) |
d12307c1 PMR |
143 | { |
144 | sym.symbol = lookup_symbol_in_block (name, global_block, domain); | |
145 | sym.block = global_block; | |
146 | } | |
34ef8452 DE |
147 | } |
148 | else | |
d12307c1 | 149 | sym = lookup_global_symbol (name, block, domain); |
34ef8452 | 150 | |
6f27419a DE |
151 | return sym; |
152 | } | |
153 | ||
154 | /* Search bare symbol NAME in DOMAIN in BLOCK. | |
1994afbf DE |
155 | NAME is guaranteed to not have any scope (no "::") in its name, though |
156 | if for example NAME is a template spec then "::" may appear in the | |
157 | argument list. | |
158 | If LANGDEF is non-NULL then try to lookup NAME as a primitive type in | |
159 | that language. Normally we wouldn't need LANGDEF but fortran also uses | |
160 | this code. | |
6f27419a DE |
161 | If SEARCH is non-zero then see if we can determine "this" from BLOCK, and |
162 | if so then also search for NAME in that class. */ | |
163 | ||
d12307c1 | 164 | static struct block_symbol |
1994afbf DE |
165 | cp_lookup_bare_symbol (const struct language_defn *langdef, |
166 | const char *name, const struct block *block, | |
6f27419a DE |
167 | const domain_enum domain, int search) |
168 | { | |
d12307c1 | 169 | struct block_symbol sym; |
6f27419a DE |
170 | |
171 | /* Note: We can't do a simple assert for ':' not being in NAME because | |
172 | ':' may be in the args of a template spec. This isn't intended to be | |
173 | a complete test, just cheap and documentary. */ | |
174 | if (strchr (name, '<') == NULL && strchr (name, '(') == NULL) | |
1cafadb4 | 175 | gdb_assert (strstr (name, "::") == NULL); |
6f27419a DE |
176 | |
177 | sym = lookup_symbol_in_static_block (name, block, domain); | |
d12307c1 | 178 | if (sym.symbol != NULL) |
6f27419a DE |
179 | return sym; |
180 | ||
1994afbf DE |
181 | /* If we didn't find a definition for a builtin type in the static block, |
182 | search for it now. This is actually the right thing to do and can be | |
183 | a massive performance win. E.g., when debugging a program with lots of | |
184 | shared libraries we could search all of them only to find out the | |
185 | builtin type isn't defined in any of them. This is common for types | |
186 | like "void". */ | |
187 | if (langdef != NULL && domain == VAR_DOMAIN) | |
188 | { | |
189 | struct gdbarch *gdbarch; | |
190 | ||
191 | if (block == NULL) | |
192 | gdbarch = target_gdbarch (); | |
193 | else | |
194 | gdbarch = block_gdbarch (block); | |
d12307c1 PMR |
195 | sym.symbol |
196 | = language_lookup_primitive_type_as_symbol (langdef, gdbarch, name); | |
197 | sym.block = NULL; | |
198 | if (sym.symbol != NULL) | |
1994afbf DE |
199 | return sym; |
200 | } | |
201 | ||
6f27419a | 202 | sym = lookup_global_symbol (name, block, domain); |
d12307c1 | 203 | if (sym.symbol != NULL) |
34ef8452 DE |
204 | return sym; |
205 | ||
206 | if (search) | |
207 | { | |
d12307c1 | 208 | struct block_symbol lang_this; |
6f27419a | 209 | struct type *type; |
34ef8452 | 210 | |
41c977aa WT |
211 | lang_this.symbol = NULL; |
212 | ||
4f19a0e6 WT |
213 | if (langdef != NULL) |
214 | lang_this = lookup_language_this (langdef, block); | |
215 | ||
d12307c1 | 216 | if (lang_this.symbol == NULL) |
b6b80672 | 217 | return null_block_symbol; |
34ef8452 | 218 | |
4f19a0e6 | 219 | |
d12307c1 | 220 | type = check_typedef (TYPE_TARGET_TYPE (SYMBOL_TYPE (lang_this.symbol))); |
6f27419a DE |
221 | /* If TYPE_NAME is NULL, abandon trying to find this symbol. |
222 | This can happen for lambda functions compiled with clang++, | |
223 | which outputs no name for the container class. */ | |
224 | if (TYPE_NAME (type) == NULL) | |
b6b80672 | 225 | return null_block_symbol; |
34ef8452 | 226 | |
d5ff0482 | 227 | /* Look for symbol NAME in this class. */ |
4dcabcc2 | 228 | sym = cp_lookup_nested_symbol (type, name, block, domain); |
6f27419a | 229 | } |
34ef8452 | 230 | |
6f27419a DE |
231 | return sym; |
232 | } | |
34ef8452 | 233 | |
6f27419a DE |
234 | /* Search NAME in DOMAIN in all static blocks, and then in all baseclasses. |
235 | BLOCK specifies the context in which to perform the search. | |
236 | NAME is guaranteed to have scope (contain "::") and PREFIX_LEN specifies | |
d5ff0482 | 237 | the length of the entire scope of NAME (up to, but not including, the last |
6f27419a | 238 | "::". |
34ef8452 | 239 | |
6f27419a DE |
240 | Note: At least in the case of Fortran, which also uses this code, there |
241 | may be no text after the last "::". */ | |
34ef8452 | 242 | |
d12307c1 | 243 | static struct block_symbol |
6f27419a DE |
244 | cp_search_static_and_baseclasses (const char *name, |
245 | const struct block *block, | |
246 | const domain_enum domain, | |
96553a0c DE |
247 | unsigned int prefix_len, |
248 | int is_in_anonymous) | |
6f27419a | 249 | { |
1cafadb4 DB |
250 | /* Check for malformed input. */ |
251 | if (prefix_len + 2 > strlen (name) || name[prefix_len + 1] != ':') | |
252 | return null_block_symbol; | |
34ef8452 | 253 | |
e68cb8e0 PA |
254 | /* The class, namespace or function name is everything up to and |
255 | including PREFIX_LEN. */ | |
256 | std::string scope (name, prefix_len); | |
6f27419a DE |
257 | |
258 | /* The rest of the name is everything else past the initial scope | |
259 | operator. */ | |
e68cb8e0 PA |
260 | const char *nested = name + prefix_len + 2; |
261 | ||
262 | /* Lookup the scope symbol. If none is found, there is nothing more | |
263 | that can be done. SCOPE could be a namespace, so always look in | |
264 | VAR_DOMAIN. This works for classes too because of | |
265 | symbol_matches_domain (which should be replaced with something | |
266 | else, but it's what we have today). */ | |
267 | block_symbol scope_sym = lookup_symbol_in_static_block (scope.c_str (), | |
268 | block, VAR_DOMAIN); | |
269 | if (scope_sym.symbol == NULL) | |
270 | scope_sym = lookup_global_symbol (scope.c_str (), block, VAR_DOMAIN); | |
271 | if (scope_sym.symbol == NULL) | |
05d49c37 | 272 | return null_block_symbol; |
6f27419a | 273 | |
e68cb8e0 PA |
274 | struct type *scope_type = SYMBOL_TYPE (scope_sym.symbol); |
275 | ||
276 | /* If the scope is a function/method, then look up NESTED as a local | |
277 | static variable. E.g., "print 'function()::static_var'". */ | |
278 | if (TYPE_CODE (scope_type) == TYPE_CODE_FUNC | |
279 | || TYPE_CODE (scope_type) == TYPE_CODE_METHOD) | |
280 | return lookup_symbol (nested, SYMBOL_BLOCK_VALUE (scope_sym.symbol), | |
281 | VAR_DOMAIN, NULL); | |
282 | ||
283 | /* Look for a symbol named NESTED in this class/namespace. | |
6f27419a DE |
284 | The caller is assumed to have already have done a basic lookup of NAME. |
285 | So we pass zero for BASIC_LOOKUP to cp_lookup_nested_symbol_1 here. */ | |
e68cb8e0 PA |
286 | return cp_lookup_nested_symbol_1 (scope_type, nested, name, |
287 | block, domain, 0, is_in_anonymous); | |
34ef8452 DE |
288 | } |
289 | ||
aff410f1 | 290 | /* Look up NAME in the C++ namespace NAMESPACE. Other arguments are |
8dea366b | 291 | as in cp_lookup_symbol_nonlocal. If SEARCH is non-zero, search |
6f27419a DE |
292 | through base classes for a matching symbol. |
293 | ||
294 | Note: Part of the complexity is because NAME may itself specify scope. | |
295 | Part of the complexity is also because this handles the case where | |
296 | there is no scoping in which case we also try looking in the class of | |
297 | "this" if we can compute it. */ | |
8540c487 | 298 | |
d12307c1 | 299 | static struct block_symbol |
fe978cb0 | 300 | cp_lookup_symbol_in_namespace (const char *the_namespace, const char *name, |
6f27419a DE |
301 | const struct block *block, |
302 | const domain_enum domain, int search) | |
8540c487 | 303 | { |
d2763117 | 304 | char *concatenated_name = NULL; |
6f27419a DE |
305 | int is_in_anonymous; |
306 | unsigned int prefix_len; | |
d12307c1 | 307 | struct block_symbol sym; |
c5504eaf | 308 | |
fe978cb0 | 309 | if (the_namespace[0] != '\0') |
d2763117 | 310 | { |
224c3ddb SM |
311 | concatenated_name |
312 | = (char *) alloca (strlen (the_namespace) + 2 + strlen (name) + 1); | |
fe978cb0 | 313 | strcpy (concatenated_name, the_namespace); |
8540c487 SW |
314 | strcat (concatenated_name, "::"); |
315 | strcat (concatenated_name, name); | |
d2763117 | 316 | name = concatenated_name; |
8540c487 | 317 | } |
d2763117 | 318 | |
6f27419a DE |
319 | prefix_len = cp_entire_prefix_len (name); |
320 | if (prefix_len == 0) | |
1994afbf | 321 | return cp_lookup_bare_symbol (NULL, name, block, domain, search); |
6f27419a DE |
322 | |
323 | /* This would be simpler if we just called cp_lookup_nested_symbol | |
324 | at this point. But that would require first looking up the containing | |
325 | class/namespace. Since we're only searching static and global blocks | |
326 | there's often no need to first do that lookup. */ | |
327 | ||
fe978cb0 PA |
328 | is_in_anonymous |
329 | = the_namespace[0] != '\0' && cp_is_in_anonymous (the_namespace); | |
6f27419a | 330 | sym = cp_basic_lookup_symbol (name, block, domain, is_in_anonymous); |
d12307c1 | 331 | if (sym.symbol != NULL) |
6f27419a DE |
332 | return sym; |
333 | ||
334 | if (search) | |
96553a0c DE |
335 | sym = cp_search_static_and_baseclasses (name, block, domain, prefix_len, |
336 | is_in_anonymous); | |
6f27419a DE |
337 | |
338 | return sym; | |
8540c487 SW |
339 | } |
340 | ||
d5ff0482 | 341 | /* Used for cleanups to reset the "searched" flag in case of an error. */ |
b14e635e SW |
342 | |
343 | static void | |
344 | reset_directive_searched (void *data) | |
345 | { | |
9a3c8263 | 346 | struct using_direct *direct = (struct using_direct *) data; |
b14e635e SW |
347 | direct->searched = 0; |
348 | } | |
349 | ||
aff410f1 MS |
350 | /* Search for NAME by applying all import statements belonging to |
351 | BLOCK which are applicable in SCOPE. If DECLARATION_ONLY the | |
352 | search is restricted to using declarations. | |
13387711 SW |
353 | Example: |
354 | ||
aff410f1 | 355 | namespace A { |
13387711 SW |
356 | int x; |
357 | } | |
358 | using A::x; | |
359 | ||
aff410f1 MS |
360 | If SEARCH_PARENTS the search will include imports which are |
361 | applicable in parents of SCOPE. | |
b14e635e SW |
362 | Example: |
363 | ||
aff410f1 | 364 | namespace A { |
b14e635e | 365 | using namespace X; |
aff410f1 | 366 | namespace B { |
b14e635e SW |
367 | using namespace Y; |
368 | } | |
369 | } | |
370 | ||
aff410f1 MS |
371 | If SCOPE is "A::B" and SEARCH_PARENTS is true the imports of |
372 | namespaces X and Y will be considered. If SEARCH_PARENTS is false | |
4bd0864e DE |
373 | only the import of Y is considered. |
374 | ||
375 | SEARCH_SCOPE_FIRST is an internal implementation detail: Callers must | |
376 | pass 0 for it. Internally we pass 1 when recursing. */ | |
8540c487 | 377 | |
d12307c1 | 378 | static struct block_symbol |
55accf4a DE |
379 | cp_lookup_symbol_via_imports (const char *scope, |
380 | const char *name, | |
381 | const struct block *block, | |
382 | const domain_enum domain, | |
4bd0864e | 383 | const int search_scope_first, |
55accf4a DE |
384 | const int declaration_only, |
385 | const int search_parents) | |
8540c487 | 386 | { |
b14e635e | 387 | struct using_direct *current; |
d12307c1 | 388 | struct block_symbol sym; |
8540c487 | 389 | int len; |
b14e635e SW |
390 | int directive_match; |
391 | struct cleanup *searched_cleanup; | |
8540c487 | 392 | |
d12307c1 | 393 | sym.symbol = NULL; |
1da03605 | 394 | sym.block = NULL; |
d12307c1 | 395 | |
4bd0864e DE |
396 | /* First, try to find the symbol in the given namespace if requested. */ |
397 | if (search_scope_first) | |
aff410f1 | 398 | sym = cp_lookup_symbol_in_namespace (scope, name, |
8dea366b | 399 | block, domain, 1); |
791244be | 400 | |
d12307c1 | 401 | if (sym.symbol != NULL) |
8540c487 SW |
402 | return sym; |
403 | ||
aff410f1 MS |
404 | /* Go through the using directives. If any of them add new names to |
405 | the namespace we're searching in, see if we can find a match by | |
406 | applying them. */ | |
8540c487 SW |
407 | |
408 | for (current = block_using (block); | |
409 | current != NULL; | |
410 | current = current->next) | |
411 | { | |
32019081 JK |
412 | const char **excludep; |
413 | ||
b14e635e SW |
414 | len = strlen (current->import_dest); |
415 | directive_match = (search_parents | |
61012eef | 416 | ? (startswith (scope, current->import_dest) |
b14e635e | 417 | && (len == 0 |
aff410f1 MS |
418 | || scope[len] == ':' |
419 | || scope[len] == '\0')) | |
b14e635e | 420 | : strcmp (scope, current->import_dest) == 0); |
8540c487 | 421 | |
aff410f1 MS |
422 | /* If the import destination is the current scope or one of its |
423 | ancestors then it is applicable. */ | |
b14e635e | 424 | if (directive_match && !current->searched) |
8540c487 | 425 | { |
a1d705ee TT |
426 | /* Mark this import as searched so that the recursive call |
427 | does not search it again. */ | |
428 | current->searched = 1; | |
429 | searched_cleanup = make_cleanup (reset_directive_searched, | |
430 | current); | |
431 | ||
432 | /* If there is an import of a single declaration, compare the | |
433 | imported declaration (after optional renaming by its alias) | |
434 | with the sought out name. If there is a match pass | |
435 | current->import_src as NAMESPACE to direct the search | |
436 | towards the imported namespace. */ | |
437 | if (current->declaration | |
438 | && strcmp (name, current->alias | |
439 | ? current->alias : current->declaration) == 0) | |
440 | sym = cp_lookup_symbol_in_namespace (current->import_src, | |
441 | current->declaration, | |
8dea366b | 442 | block, domain, 1); |
a1d705ee TT |
443 | |
444 | /* If this is a DECLARATION_ONLY search or a symbol was found | |
445 | or this import statement was an import declaration, the | |
446 | search of this import is complete. */ | |
d12307c1 | 447 | if (declaration_only || sym.symbol != NULL || current->declaration) |
a1d705ee TT |
448 | { |
449 | current->searched = 0; | |
450 | discard_cleanups (searched_cleanup); | |
451 | ||
d12307c1 | 452 | if (sym.symbol != NULL) |
a1d705ee TT |
453 | return sym; |
454 | ||
455 | continue; | |
456 | } | |
457 | ||
458 | /* Do not follow CURRENT if NAME matches its EXCLUDES. */ | |
459 | for (excludep = current->excludes; *excludep; excludep++) | |
460 | if (strcmp (name, *excludep) == 0) | |
461 | break; | |
462 | if (*excludep) | |
463 | { | |
464 | discard_cleanups (searched_cleanup); | |
465 | continue; | |
466 | } | |
467 | ||
468 | if (current->alias != NULL | |
469 | && strcmp (name, current->alias) == 0) | |
470 | /* If the import is creating an alias and the alias matches | |
471 | the sought name. Pass current->import_src as the NAME to | |
472 | direct the search towards the aliased namespace. */ | |
473 | { | |
474 | sym = cp_lookup_symbol_in_namespace (scope, | |
475 | current->import_src, | |
8dea366b | 476 | block, domain, 1); |
a1d705ee TT |
477 | } |
478 | else if (current->alias == NULL) | |
479 | { | |
480 | /* If this import statement creates no alias, pass | |
481 | current->inner as NAMESPACE to direct the search | |
482 | towards the imported namespace. */ | |
55accf4a DE |
483 | sym = cp_lookup_symbol_via_imports (current->import_src, |
484 | name, block, | |
4bd0864e | 485 | domain, 1, 0, 0); |
a1d705ee TT |
486 | } |
487 | current->searched = 0; | |
488 | discard_cleanups (searched_cleanup); | |
489 | ||
d12307c1 | 490 | if (sym.symbol != NULL) |
a1d705ee | 491 | return sym; |
8540c487 SW |
492 | } |
493 | } | |
494 | ||
b6b80672 | 495 | return null_block_symbol; |
8540c487 SW |
496 | } |
497 | ||
d5ff0482 | 498 | /* Helper function that searches an array of symbols for one named NAME. */ |
34eaf542 TT |
499 | |
500 | static struct symbol * | |
aff410f1 MS |
501 | search_symbol_list (const char *name, int num, |
502 | struct symbol **syms) | |
34eaf542 TT |
503 | { |
504 | int i; | |
505 | ||
506 | /* Maybe we should store a dictionary in here instead. */ | |
507 | for (i = 0; i < num; ++i) | |
508 | { | |
509 | if (strcmp (name, SYMBOL_NATURAL_NAME (syms[i])) == 0) | |
510 | return syms[i]; | |
511 | } | |
512 | return NULL; | |
513 | } | |
514 | ||
55accf4a | 515 | /* Like cp_lookup_symbol_via_imports, but if BLOCK is a function, it |
34eaf542 TT |
516 | searches through the template parameters of the function and the |
517 | function's type. */ | |
518 | ||
d12307c1 | 519 | struct block_symbol |
34eaf542 TT |
520 | cp_lookup_symbol_imports_or_template (const char *scope, |
521 | const char *name, | |
522 | const struct block *block, | |
523 | const domain_enum domain) | |
524 | { | |
525 | struct symbol *function = BLOCK_FUNCTION (block); | |
d12307c1 | 526 | struct block_symbol result; |
cc485e62 DE |
527 | |
528 | if (symbol_lookup_debug) | |
529 | { | |
530 | fprintf_unfiltered (gdb_stdlog, | |
531 | "cp_lookup_symbol_imports_or_template" | |
532 | " (%s, %s, %s, %s)\n", | |
533 | scope, name, host_address_to_string (block), | |
534 | domain_name (domain)); | |
535 | } | |
34eaf542 TT |
536 | |
537 | if (function != NULL && SYMBOL_LANGUAGE (function) == language_cplus) | |
538 | { | |
34eaf542 TT |
539 | /* Search the function's template parameters. */ |
540 | if (SYMBOL_IS_CPLUS_TEMPLATE_FUNCTION (function)) | |
541 | { | |
791244be | 542 | struct template_symbol *templ |
aff410f1 | 543 | = (struct template_symbol *) function; |
d12307c1 PMR |
544 | struct symbol *sym = search_symbol_list (name, |
545 | templ->n_template_arguments, | |
546 | templ->template_arguments); | |
34eaf542 | 547 | |
d12307c1 | 548 | if (sym != NULL) |
cc485e62 DE |
549 | { |
550 | if (symbol_lookup_debug) | |
551 | { | |
552 | fprintf_unfiltered (gdb_stdlog, | |
553 | "cp_lookup_symbol_imports_or_template" | |
554 | " (...) = %s\n", | |
d12307c1 | 555 | host_address_to_string (sym)); |
cc485e62 | 556 | } |
d12307c1 | 557 | return (struct block_symbol) {sym, block}; |
cc485e62 | 558 | } |
34eaf542 TT |
559 | } |
560 | ||
561 | /* Search the template parameters of the function's defining | |
562 | context. */ | |
563 | if (SYMBOL_NATURAL_NAME (function)) | |
564 | { | |
565 | struct type *context; | |
05d49c37 | 566 | std::string name_copy (SYMBOL_NATURAL_NAME (function)); |
34eaf542 | 567 | const struct language_defn *lang = language_def (language_cplus); |
08be3fe3 | 568 | struct gdbarch *arch = symbol_arch (function); |
34eaf542 | 569 | const struct block *parent = BLOCK_SUPERBLOCK (block); |
d12307c1 | 570 | struct symbol *sym; |
34eaf542 TT |
571 | |
572 | while (1) | |
573 | { | |
05d49c37 TT |
574 | unsigned int prefix_len |
575 | = cp_entire_prefix_len (name_copy.c_str ()); | |
34eaf542 TT |
576 | |
577 | if (prefix_len == 0) | |
578 | context = NULL; | |
579 | else | |
580 | { | |
05d49c37 | 581 | name_copy.erase (prefix_len); |
aff410f1 | 582 | context = lookup_typename (lang, arch, |
05d49c37 | 583 | name_copy.c_str (), |
aff410f1 | 584 | parent, 1); |
34eaf542 TT |
585 | } |
586 | ||
587 | if (context == NULL) | |
588 | break; | |
589 | ||
d12307c1 | 590 | sym |
aff410f1 MS |
591 | = search_symbol_list (name, |
592 | TYPE_N_TEMPLATE_ARGUMENTS (context), | |
593 | TYPE_TEMPLATE_ARGUMENTS (context)); | |
d12307c1 | 594 | if (sym != NULL) |
c27e16e3 | 595 | { |
cc485e62 DE |
596 | if (symbol_lookup_debug) |
597 | { | |
d12307c1 PMR |
598 | fprintf_unfiltered |
599 | (gdb_stdlog, | |
600 | "cp_lookup_symbol_imports_or_template (...) = %s\n", | |
601 | host_address_to_string (sym)); | |
cc485e62 | 602 | } |
d12307c1 | 603 | return (struct block_symbol) {sym, parent}; |
c27e16e3 | 604 | } |
34eaf542 | 605 | } |
34eaf542 TT |
606 | } |
607 | } | |
608 | ||
4bd0864e | 609 | result = cp_lookup_symbol_via_imports (scope, name, block, domain, 0, 1, 1); |
cc485e62 DE |
610 | if (symbol_lookup_debug) |
611 | { | |
612 | fprintf_unfiltered (gdb_stdlog, | |
613 | "cp_lookup_symbol_imports_or_template (...) = %s\n", | |
d12307c1 PMR |
614 | result.symbol != NULL |
615 | ? host_address_to_string (result.symbol) : "NULL"); | |
cc485e62 DE |
616 | } |
617 | return result; | |
34eaf542 TT |
618 | } |
619 | ||
f953163f DE |
620 | /* Search for NAME by applying relevant import statements belonging to BLOCK |
621 | and its parents. SCOPE is the namespace scope of the context in which the | |
622 | search is being evaluated. */ | |
623 | ||
d12307c1 | 624 | static struct block_symbol |
f953163f DE |
625 | cp_lookup_symbol_via_all_imports (const char *scope, const char *name, |
626 | const struct block *block, | |
627 | const domain_enum domain) | |
628 | { | |
d12307c1 | 629 | struct block_symbol sym; |
f953163f DE |
630 | |
631 | while (block != NULL) | |
632 | { | |
633 | sym = cp_lookup_symbol_via_imports (scope, name, block, domain, 0, 0, 1); | |
d12307c1 | 634 | if (sym.symbol) |
f953163f DE |
635 | return sym; |
636 | ||
637 | block = BLOCK_SUPERBLOCK (block); | |
638 | } | |
639 | ||
b6b80672 | 640 | return null_block_symbol; |
f953163f DE |
641 | } |
642 | ||
791244be DE |
643 | /* Searches for NAME in the current namespace, and by applying |
644 | relevant import statements belonging to BLOCK and its parents. | |
645 | SCOPE is the namespace scope of the context in which the search is | |
646 | being evaluated. */ | |
8540c487 | 647 | |
d12307c1 | 648 | struct block_symbol |
8540c487 SW |
649 | cp_lookup_symbol_namespace (const char *scope, |
650 | const char *name, | |
8540c487 | 651 | const struct block *block, |
13387711 | 652 | const domain_enum domain) |
8540c487 | 653 | { |
d12307c1 | 654 | struct block_symbol sym; |
cc485e62 DE |
655 | |
656 | if (symbol_lookup_debug) | |
657 | { | |
658 | fprintf_unfiltered (gdb_stdlog, | |
659 | "cp_lookup_symbol_namespace (%s, %s, %s, %s)\n", | |
660 | scope, name, host_address_to_string (block), | |
661 | domain_name (domain)); | |
662 | } | |
663 | ||
13387711 | 664 | /* First, try to find the symbol in the given namespace. */ |
f953163f | 665 | sym = cp_lookup_symbol_in_namespace (scope, name, block, domain, 1); |
8540c487 | 666 | |
f953163f | 667 | /* Search for name in namespaces imported to this and parent blocks. */ |
d12307c1 | 668 | if (sym.symbol == NULL) |
f953163f | 669 | sym = cp_lookup_symbol_via_all_imports (scope, name, block, domain); |
8540c487 | 670 | |
cc485e62 DE |
671 | if (symbol_lookup_debug) |
672 | { | |
673 | fprintf_unfiltered (gdb_stdlog, | |
f953163f | 674 | "cp_lookup_symbol_namespace (...) = %s\n", |
d12307c1 PMR |
675 | sym.symbol != NULL |
676 | ? host_address_to_string (sym.symbol) : "NULL"); | |
cc485e62 | 677 | } |
f953163f | 678 | return sym; |
1fcb5155 DC |
679 | } |
680 | ||
681 | /* Lookup NAME at namespace scope (or, in C terms, in static and | |
682 | global variables). SCOPE is the namespace that the current | |
683 | function is defined within; only consider namespaces whose length | |
684 | is at least SCOPE_LEN. Other arguments are as in | |
685 | cp_lookup_symbol_nonlocal. | |
686 | ||
687 | For example, if we're within a function A::B::f and looking for a | |
3882f37a | 688 | symbol x, this will get called with NAME = "x", SCOPE = "A::B", and |
1fcb5155 DC |
689 | SCOPE_LEN = 0. It then calls itself with NAME and SCOPE the same, |
690 | but with SCOPE_LEN = 1. And then it calls itself with NAME and | |
691 | SCOPE the same, but with SCOPE_LEN = 4. This third call looks for | |
692 | "A::B::x"; if it doesn't find it, then the second call looks for | |
693 | "A::x", and if that call fails, then the first call looks for | |
694 | "x". */ | |
695 | ||
d12307c1 | 696 | static struct block_symbol |
1994afbf DE |
697 | lookup_namespace_scope (const struct language_defn *langdef, |
698 | const char *name, | |
1fcb5155 DC |
699 | const struct block *block, |
700 | const domain_enum domain, | |
1fcb5155 DC |
701 | const char *scope, |
702 | int scope_len) | |
703 | { | |
fe978cb0 | 704 | char *the_namespace; |
1fcb5155 DC |
705 | |
706 | if (scope[scope_len] != '\0') | |
707 | { | |
708 | /* Recursively search for names in child namespaces first. */ | |
709 | ||
d12307c1 | 710 | struct block_symbol sym; |
1fcb5155 DC |
711 | int new_scope_len = scope_len; |
712 | ||
713 | /* If the current scope is followed by "::", skip past that. */ | |
714 | if (new_scope_len != 0) | |
715 | { | |
716 | gdb_assert (scope[new_scope_len] == ':'); | |
717 | new_scope_len += 2; | |
718 | } | |
719 | new_scope_len += cp_find_first_component (scope + new_scope_len); | |
1994afbf | 720 | sym = lookup_namespace_scope (langdef, name, block, domain, |
aff410f1 | 721 | scope, new_scope_len); |
d12307c1 | 722 | if (sym.symbol != NULL) |
1fcb5155 DC |
723 | return sym; |
724 | } | |
725 | ||
726 | /* Okay, we didn't find a match in our children, so look for the | |
1994afbf DE |
727 | name in the current namespace. |
728 | ||
729 | If we there is no scope and we know we have a bare symbol, then short | |
730 | circuit everything and call cp_lookup_bare_symbol directly. | |
731 | This isn't an optimization, rather it allows us to pass LANGDEF which | |
732 | is needed for primitive type lookup. The test doesn't have to be | |
733 | perfect: if NAME is a bare symbol that our test doesn't catch (e.g., a | |
734 | template symbol with "::" in the argument list) then | |
735 | cp_lookup_symbol_in_namespace will catch it. */ | |
736 | ||
737 | if (scope_len == 0 && strchr (name, ':') == NULL) | |
738 | return cp_lookup_bare_symbol (langdef, name, block, domain, 1); | |
1fcb5155 | 739 | |
224c3ddb | 740 | the_namespace = (char *) alloca (scope_len + 1); |
fe978cb0 PA |
741 | strncpy (the_namespace, scope, scope_len); |
742 | the_namespace[scope_len] = '\0'; | |
743 | return cp_lookup_symbol_in_namespace (the_namespace, name, | |
8dea366b | 744 | block, domain, 1); |
1fcb5155 DC |
745 | } |
746 | ||
56286edf DE |
747 | /* The C++-specific version of name lookup for static and global |
748 | names. This makes sure that names get looked for in all namespaces | |
749 | that are in scope. NAME is the natural name of the symbol that | |
750 | we're looking for, BLOCK is the block that we're searching within, | |
751 | DOMAIN says what kind of symbols we're looking for. */ | |
752 | ||
d12307c1 | 753 | struct block_symbol |
f606139a DE |
754 | cp_lookup_symbol_nonlocal (const struct language_defn *langdef, |
755 | const char *name, | |
56286edf DE |
756 | const struct block *block, |
757 | const domain_enum domain) | |
758 | { | |
d12307c1 | 759 | struct block_symbol sym; |
56286edf DE |
760 | const char *scope = block_scope (block); |
761 | ||
cc485e62 DE |
762 | if (symbol_lookup_debug) |
763 | { | |
764 | fprintf_unfiltered (gdb_stdlog, | |
765 | "cp_lookup_symbol_non_local" | |
766 | " (%s, %s (scope %s), %s)\n", | |
767 | name, host_address_to_string (block), scope, | |
768 | domain_name (domain)); | |
769 | } | |
770 | ||
f953163f DE |
771 | /* First, try to find the symbol in the given namespace, and all |
772 | containing namespaces. */ | |
1994afbf | 773 | sym = lookup_namespace_scope (langdef, name, block, domain, scope, 0); |
56286edf | 774 | |
f953163f | 775 | /* Search for name in namespaces imported to this and parent blocks. */ |
d12307c1 | 776 | if (sym.symbol == NULL) |
f953163f DE |
777 | sym = cp_lookup_symbol_via_all_imports (scope, name, block, domain); |
778 | ||
cc485e62 DE |
779 | if (symbol_lookup_debug) |
780 | { | |
781 | fprintf_unfiltered (gdb_stdlog, | |
782 | "cp_lookup_symbol_nonlocal (...) = %s\n", | |
d12307c1 PMR |
783 | (sym.symbol != NULL |
784 | ? host_address_to_string (sym.symbol) | |
785 | : "NULL")); | |
cc485e62 DE |
786 | } |
787 | return sym; | |
56286edf DE |
788 | } |
789 | ||
f7e3ecae KS |
790 | /* Search through the base classes of PARENT_TYPE for a base class |
791 | named NAME and return its type. If not found, return NULL. */ | |
792 | ||
793 | struct type * | |
a07e3e18 | 794 | cp_find_type_baseclass_by_name (struct type *parent_type, const char *name) |
f7e3ecae KS |
795 | { |
796 | int i; | |
797 | ||
f168693b | 798 | parent_type = check_typedef (parent_type); |
f7e3ecae KS |
799 | for (i = 0; i < TYPE_N_BASECLASSES (parent_type); ++i) |
800 | { | |
801 | struct type *type = check_typedef (TYPE_BASECLASS (parent_type, i)); | |
802 | const char *base_name = TYPE_BASECLASS_NAME (parent_type, i); | |
803 | ||
804 | if (base_name == NULL) | |
805 | continue; | |
806 | ||
807 | if (streq (base_name, name)) | |
808 | return type; | |
809 | ||
a07e3e18 | 810 | type = cp_find_type_baseclass_by_name (type, name); |
f7e3ecae KS |
811 | if (type != NULL) |
812 | return type; | |
813 | } | |
814 | ||
815 | return NULL; | |
816 | } | |
817 | ||
8dea366b KS |
818 | /* Search through the base classes of PARENT_TYPE for a symbol named |
819 | NAME in block BLOCK. */ | |
820 | ||
d12307c1 | 821 | static struct block_symbol |
8dea366b | 822 | find_symbol_in_baseclass (struct type *parent_type, const char *name, |
4dcabcc2 DE |
823 | const struct block *block, const domain_enum domain, |
824 | int is_in_anonymous) | |
8dea366b KS |
825 | { |
826 | int i; | |
d12307c1 | 827 | struct block_symbol sym; |
8dea366b | 828 | |
d12307c1 PMR |
829 | sym.symbol = NULL; |
830 | sym.block = NULL; | |
791244be | 831 | |
8dea366b KS |
832 | for (i = 0; i < TYPE_N_BASECLASSES (parent_type); ++i) |
833 | { | |
69fc87c2 | 834 | struct type *base_type = TYPE_BASECLASS (parent_type, i); |
8dea366b KS |
835 | const char *base_name = TYPE_BASECLASS_NAME (parent_type, i); |
836 | ||
837 | if (base_name == NULL) | |
838 | continue; | |
839 | ||
05d49c37 | 840 | std::string concatenated_name = std::string (base_name) + "::" + name; |
8dea366b | 841 | |
05d49c37 TT |
842 | sym = cp_lookup_nested_symbol_1 (base_type, name, |
843 | concatenated_name.c_str (), | |
4dcabcc2 | 844 | block, domain, 1, is_in_anonymous); |
d12307c1 | 845 | if (sym.symbol != NULL) |
69fc87c2 | 846 | break; |
8dea366b KS |
847 | } |
848 | ||
0c2e6019 | 849 | return sym; |
5c4e30ca DC |
850 | } |
851 | ||
4dcabcc2 DE |
852 | /* Helper function to look up NESTED_NAME in CONTAINER_TYPE and in DOMAIN |
853 | and within the context of BLOCK. | |
d5ff0482 | 854 | NESTED_NAME may have scope ("::"). |
6f27419a DE |
855 | CONTAINER_TYPE needn't have been "check_typedef'd" yet. |
856 | CONCATENATED_NAME is the fully scoped spelling of NESTED_NAME, it is | |
857 | passed as an argument so that callers can control how space for it is | |
858 | allocated. | |
859 | If BASIC_LOOKUP is non-zero then perform a basic lookup of | |
96553a0c DE |
860 | CONCATENATED_NAME. See cp_basic_lookup_symbol for details. |
861 | If IS_IN_ANONYMOUS is non-zero then CONCATENATED_NAME is in an anonymous | |
862 | namespace. */ | |
6f27419a | 863 | |
d12307c1 | 864 | static struct block_symbol |
6f27419a DE |
865 | cp_lookup_nested_symbol_1 (struct type *container_type, |
866 | const char *nested_name, | |
867 | const char *concatenated_name, | |
868 | const struct block *block, | |
4dcabcc2 | 869 | const domain_enum domain, |
96553a0c | 870 | int basic_lookup, int is_in_anonymous) |
6f27419a | 871 | { |
d12307c1 | 872 | struct block_symbol sym; |
6f27419a DE |
873 | |
874 | /* NOTE: carlton/2003-11-10: We don't treat C++ class members | |
875 | of classes like, say, data or function members. Instead, | |
876 | they're just represented by symbols whose names are | |
877 | qualified by the name of the surrounding class. This is | |
878 | just like members of namespaces; in particular, | |
879 | cp_basic_lookup_symbol works when looking them up. */ | |
880 | ||
881 | if (basic_lookup) | |
882 | { | |
4dcabcc2 | 883 | sym = cp_basic_lookup_symbol (concatenated_name, block, domain, |
6f27419a | 884 | is_in_anonymous); |
d12307c1 | 885 | if (sym.symbol != NULL) |
6f27419a DE |
886 | return sym; |
887 | } | |
888 | ||
889 | /* Now search all static file-level symbols. We have to do this for things | |
890 | like typedefs in the class. We do not try to guess any imported | |
891 | namespace as even the fully specified namespace search is already not | |
892 | C++ compliant and more assumptions could make it too magic. */ | |
893 | ||
894 | /* First search in this symtab, what we want is possibly there. */ | |
4dcabcc2 | 895 | sym = lookup_symbol_in_static_block (concatenated_name, block, domain); |
d12307c1 | 896 | if (sym.symbol != NULL) |
6f27419a DE |
897 | return sym; |
898 | ||
899 | /* Nope. We now have to search all static blocks in all objfiles, | |
900 | even if block != NULL, because there's no guarantees as to which | |
96553a0c DE |
901 | symtab the symbol we want is in. Except for symbols defined in |
902 | anonymous namespaces should be treated as local to a single file, | |
903 | which we just searched. */ | |
904 | if (!is_in_anonymous) | |
905 | { | |
4dcabcc2 | 906 | sym = lookup_static_symbol (concatenated_name, domain); |
d12307c1 | 907 | if (sym.symbol != NULL) |
96553a0c DE |
908 | return sym; |
909 | } | |
6f27419a DE |
910 | |
911 | /* If this is a class with baseclasses, search them next. */ | |
f168693b | 912 | container_type = check_typedef (container_type); |
6f27419a DE |
913 | if (TYPE_N_BASECLASSES (container_type) > 0) |
914 | { | |
96553a0c | 915 | sym = find_symbol_in_baseclass (container_type, nested_name, block, |
4dcabcc2 | 916 | domain, is_in_anonymous); |
d12307c1 | 917 | if (sym.symbol != NULL) |
6f27419a DE |
918 | return sym; |
919 | } | |
920 | ||
b6b80672 | 921 | return null_block_symbol; |
6f27419a DE |
922 | } |
923 | ||
50af5481 | 924 | /* Look up a symbol named NESTED_NAME that is nested inside the C++ |
79c2c32d | 925 | class or namespace given by PARENT_TYPE, from within the context |
4dcabcc2 DE |
926 | given by BLOCK, and in DOMAIN. |
927 | Return NULL if there is no such nested symbol. */ | |
79c2c32d | 928 | |
d12307c1 | 929 | struct block_symbol |
50af5481 JK |
930 | cp_lookup_nested_symbol (struct type *parent_type, |
931 | const char *nested_name, | |
4dcabcc2 DE |
932 | const struct block *block, |
933 | const domain_enum domain) | |
79c2c32d | 934 | { |
05a6c3c8 | 935 | /* type_name_no_tag_or_error provides better error reporting using the |
d8228535 JK |
936 | original type. */ |
937 | struct type *saved_parent_type = parent_type; | |
938 | ||
f168693b | 939 | parent_type = check_typedef (parent_type); |
d8228535 | 940 | |
cc485e62 DE |
941 | if (symbol_lookup_debug) |
942 | { | |
943 | const char *type_name = type_name_no_tag (saved_parent_type); | |
944 | ||
945 | fprintf_unfiltered (gdb_stdlog, | |
4dcabcc2 | 946 | "cp_lookup_nested_symbol (%s, %s, %s, %s)\n", |
cc485e62 | 947 | type_name != NULL ? type_name : "unnamed", |
4dcabcc2 DE |
948 | nested_name, host_address_to_string (block), |
949 | domain_name (domain)); | |
cc485e62 DE |
950 | } |
951 | ||
79c2c32d DC |
952 | switch (TYPE_CODE (parent_type)) |
953 | { | |
63d06c5c | 954 | case TYPE_CODE_STRUCT: |
79c2c32d | 955 | case TYPE_CODE_NAMESPACE: |
48e32051 | 956 | case TYPE_CODE_UNION: |
3d567982 | 957 | case TYPE_CODE_ENUM: |
530e8392 KB |
958 | /* NOTE: Handle modules here as well, because Fortran is re-using the C++ |
959 | specific code to lookup nested symbols in modules, by calling the | |
960 | function pointer la_lookup_symbol_nonlocal, which ends up here. */ | |
961 | case TYPE_CODE_MODULE: | |
79c2c32d | 962 | { |
08850b56 | 963 | int size; |
d8228535 | 964 | const char *parent_name = type_name_no_tag_or_error (saved_parent_type); |
d12307c1 | 965 | struct block_symbol sym; |
41f62f39 | 966 | char *concatenated_name; |
96553a0c | 967 | int is_in_anonymous; |
c5504eaf | 968 | |
08850b56 | 969 | size = strlen (parent_name) + 2 + strlen (nested_name) + 1; |
224c3ddb | 970 | concatenated_name = (char *) alloca (size); |
08850b56 | 971 | xsnprintf (concatenated_name, size, "%s::%s", |
6f27419a | 972 | parent_name, nested_name); |
96553a0c | 973 | is_in_anonymous = cp_is_in_anonymous (concatenated_name); |
6f27419a DE |
974 | |
975 | sym = cp_lookup_nested_symbol_1 (parent_type, nested_name, | |
4dcabcc2 DE |
976 | concatenated_name, block, domain, |
977 | 1, is_in_anonymous); | |
41f62f39 | 978 | |
cc485e62 DE |
979 | if (symbol_lookup_debug) |
980 | { | |
981 | fprintf_unfiltered (gdb_stdlog, | |
982 | "cp_lookup_nested_symbol (...) = %s\n", | |
d12307c1 PMR |
983 | (sym.symbol != NULL |
984 | ? host_address_to_string (sym.symbol) | |
985 | : "NULL")); | |
cc485e62 DE |
986 | } |
987 | return sym; | |
79c2c32d | 988 | } |
bb869963 SDJ |
989 | |
990 | case TYPE_CODE_FUNC: | |
991 | case TYPE_CODE_METHOD: | |
cc485e62 DE |
992 | if (symbol_lookup_debug) |
993 | { | |
994 | fprintf_unfiltered (gdb_stdlog, | |
995 | "cp_lookup_nested_symbol (...) = NULL" | |
996 | " (func/method)\n"); | |
997 | } | |
b6b80672 | 998 | return null_block_symbol; |
bb869963 | 999 | |
79c2c32d DC |
1000 | default: |
1001 | internal_error (__FILE__, __LINE__, | |
50af5481 | 1002 | _("cp_lookup_nested_symbol called " |
3e43a32a | 1003 | "on a non-aggregate type.")); |
79c2c32d DC |
1004 | } |
1005 | } | |
1006 | ||
b368761e DC |
1007 | /* The C++-version of lookup_transparent_type. */ |
1008 | ||
1009 | /* FIXME: carlton/2004-01-16: The problem that this is trying to | |
1010 | address is that, unfortunately, sometimes NAME is wrong: it may not | |
1011 | include the name of namespaces enclosing the type in question. | |
b021a221 | 1012 | lookup_transparent_type gets called when the type in question |
b368761e DC |
1013 | is a declaration, and we're trying to find its definition; but, for |
1014 | declarations, our type name deduction mechanism doesn't work. | |
1015 | There's nothing we can do to fix this in general, I think, in the | |
1016 | absence of debug information about namespaces (I've filed PR | |
1017 | gdb/1511 about this); until such debug information becomes more | |
1018 | prevalent, one heuristic which sometimes looks is to search for the | |
1019 | definition in namespaces containing the current namespace. | |
1020 | ||
1021 | We should delete this functions once the appropriate debug | |
1022 | information becomes more widespread. (GCC 3.4 will be the first | |
1023 | released version of GCC with such information.) */ | |
1024 | ||
1025 | struct type * | |
1026 | cp_lookup_transparent_type (const char *name) | |
1027 | { | |
1028 | /* First, try the honest way of looking up the definition. */ | |
1029 | struct type *t = basic_lookup_transparent_type (name); | |
1030 | const char *scope; | |
1031 | ||
1032 | if (t != NULL) | |
1033 | return t; | |
1034 | ||
1035 | /* If that doesn't work and we're within a namespace, look there | |
1036 | instead. */ | |
1037 | scope = block_scope (get_selected_block (0)); | |
1038 | ||
1039 | if (scope[0] == '\0') | |
1040 | return NULL; | |
1041 | ||
1042 | return cp_lookup_transparent_type_loop (name, scope, 0); | |
1043 | } | |
1044 | ||
b021a221 MS |
1045 | /* Lookup the type definition associated to NAME in namespaces/classes |
1046 | containing SCOPE whose name is strictly longer than LENGTH. LENGTH | |
1047 | must be the index of the start of a component of SCOPE. */ | |
b368761e DC |
1048 | |
1049 | static struct type * | |
aff410f1 MS |
1050 | cp_lookup_transparent_type_loop (const char *name, |
1051 | const char *scope, | |
b368761e DC |
1052 | int length) |
1053 | { | |
1198ecbe | 1054 | int scope_length = length + cp_find_first_component (scope + length); |
b368761e DC |
1055 | char *full_name; |
1056 | ||
1057 | /* If the current scope is followed by "::", look in the next | |
1058 | component. */ | |
1059 | if (scope[scope_length] == ':') | |
1060 | { | |
1061 | struct type *retval | |
aff410f1 MS |
1062 | = cp_lookup_transparent_type_loop (name, scope, |
1063 | scope_length + 2); | |
c5504eaf | 1064 | |
b368761e DC |
1065 | if (retval != NULL) |
1066 | return retval; | |
1067 | } | |
1068 | ||
224c3ddb | 1069 | full_name = (char *) alloca (scope_length + 2 + strlen (name) + 1); |
b368761e DC |
1070 | strncpy (full_name, scope, scope_length); |
1071 | strncpy (full_name + scope_length, "::", 2); | |
1072 | strcpy (full_name + scope_length + 2, name); | |
1073 | ||
1074 | return basic_lookup_transparent_type (full_name); | |
1075 | } | |
1076 | ||
0c2e6019 TT |
1077 | /* This used to do something but was removed when it became |
1078 | obsolete. */ | |
5c4e30ca DC |
1079 | |
1080 | static void | |
32a7bf17 | 1081 | maintenance_cplus_namespace (const char *args, int from_tty) |
5c4e30ca | 1082 | { |
0c2e6019 | 1083 | printf_unfiltered (_("The `maint namespace' command was removed.\n")); |
5c4e30ca DC |
1084 | } |
1085 | ||
1086 | void | |
1087 | _initialize_cp_namespace (void) | |
1088 | { | |
0c2e6019 TT |
1089 | struct cmd_list_element *cmd; |
1090 | ||
1091 | cmd = add_cmd ("namespace", class_maintenance, | |
1092 | maintenance_cplus_namespace, | |
1093 | _("Deprecated placeholder for removed functionality."), | |
1094 | &maint_cplus_cmd_list); | |
1095 | deprecate_cmd (cmd, NULL); | |
1fcb5155 | 1096 | } |