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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 | ||
aff410f1 MS |
341 | /* Search for NAME by applying all import statements belonging to |
342 | BLOCK which are applicable in SCOPE. If DECLARATION_ONLY the | |
343 | search is restricted to using declarations. | |
13387711 SW |
344 | Example: |
345 | ||
aff410f1 | 346 | namespace A { |
13387711 SW |
347 | int x; |
348 | } | |
349 | using A::x; | |
350 | ||
aff410f1 MS |
351 | If SEARCH_PARENTS the search will include imports which are |
352 | applicable in parents of SCOPE. | |
b14e635e SW |
353 | Example: |
354 | ||
aff410f1 | 355 | namespace A { |
b14e635e | 356 | using namespace X; |
aff410f1 | 357 | namespace B { |
b14e635e SW |
358 | using namespace Y; |
359 | } | |
360 | } | |
361 | ||
aff410f1 MS |
362 | If SCOPE is "A::B" and SEARCH_PARENTS is true the imports of |
363 | namespaces X and Y will be considered. If SEARCH_PARENTS is false | |
4bd0864e DE |
364 | only the import of Y is considered. |
365 | ||
366 | SEARCH_SCOPE_FIRST is an internal implementation detail: Callers must | |
367 | pass 0 for it. Internally we pass 1 when recursing. */ | |
8540c487 | 368 | |
d12307c1 | 369 | static struct block_symbol |
55accf4a DE |
370 | cp_lookup_symbol_via_imports (const char *scope, |
371 | const char *name, | |
372 | const struct block *block, | |
373 | const domain_enum domain, | |
4bd0864e | 374 | const int search_scope_first, |
55accf4a DE |
375 | const int declaration_only, |
376 | const int search_parents) | |
8540c487 | 377 | { |
b14e635e | 378 | struct using_direct *current; |
d12307c1 | 379 | struct block_symbol sym; |
8540c487 | 380 | int len; |
b14e635e | 381 | int directive_match; |
8540c487 | 382 | |
d12307c1 | 383 | sym.symbol = NULL; |
1da03605 | 384 | sym.block = NULL; |
d12307c1 | 385 | |
4bd0864e DE |
386 | /* First, try to find the symbol in the given namespace if requested. */ |
387 | if (search_scope_first) | |
aff410f1 | 388 | sym = cp_lookup_symbol_in_namespace (scope, name, |
8dea366b | 389 | block, domain, 1); |
791244be | 390 | |
d12307c1 | 391 | if (sym.symbol != NULL) |
8540c487 SW |
392 | return sym; |
393 | ||
aff410f1 MS |
394 | /* Go through the using directives. If any of them add new names to |
395 | the namespace we're searching in, see if we can find a match by | |
396 | applying them. */ | |
8540c487 SW |
397 | |
398 | for (current = block_using (block); | |
399 | current != NULL; | |
400 | current = current->next) | |
401 | { | |
32019081 JK |
402 | const char **excludep; |
403 | ||
b14e635e SW |
404 | len = strlen (current->import_dest); |
405 | directive_match = (search_parents | |
61012eef | 406 | ? (startswith (scope, current->import_dest) |
b14e635e | 407 | && (len == 0 |
aff410f1 MS |
408 | || scope[len] == ':' |
409 | || scope[len] == '\0')) | |
b14e635e | 410 | : strcmp (scope, current->import_dest) == 0); |
8540c487 | 411 | |
aff410f1 MS |
412 | /* If the import destination is the current scope or one of its |
413 | ancestors then it is applicable. */ | |
b14e635e | 414 | if (directive_match && !current->searched) |
8540c487 | 415 | { |
a1d705ee TT |
416 | /* Mark this import as searched so that the recursive call |
417 | does not search it again. */ | |
167b0be1 TT |
418 | scoped_restore reset_directive_searched |
419 | = make_scoped_restore (¤t->searched, 1); | |
a1d705ee TT |
420 | |
421 | /* If there is an import of a single declaration, compare the | |
422 | imported declaration (after optional renaming by its alias) | |
423 | with the sought out name. If there is a match pass | |
424 | current->import_src as NAMESPACE to direct the search | |
425 | towards the imported namespace. */ | |
426 | if (current->declaration | |
427 | && strcmp (name, current->alias | |
428 | ? current->alias : current->declaration) == 0) | |
429 | sym = cp_lookup_symbol_in_namespace (current->import_src, | |
430 | current->declaration, | |
8dea366b | 431 | block, domain, 1); |
a1d705ee TT |
432 | |
433 | /* If this is a DECLARATION_ONLY search or a symbol was found | |
434 | or this import statement was an import declaration, the | |
435 | search of this import is complete. */ | |
d12307c1 | 436 | if (declaration_only || sym.symbol != NULL || current->declaration) |
a1d705ee | 437 | { |
d12307c1 | 438 | if (sym.symbol != NULL) |
a1d705ee TT |
439 | return sym; |
440 | ||
441 | continue; | |
442 | } | |
443 | ||
444 | /* Do not follow CURRENT if NAME matches its EXCLUDES. */ | |
445 | for (excludep = current->excludes; *excludep; excludep++) | |
446 | if (strcmp (name, *excludep) == 0) | |
447 | break; | |
448 | if (*excludep) | |
167b0be1 | 449 | continue; |
a1d705ee TT |
450 | |
451 | if (current->alias != NULL | |
452 | && strcmp (name, current->alias) == 0) | |
453 | /* If the import is creating an alias and the alias matches | |
454 | the sought name. Pass current->import_src as the NAME to | |
455 | direct the search towards the aliased namespace. */ | |
456 | { | |
457 | sym = cp_lookup_symbol_in_namespace (scope, | |
458 | current->import_src, | |
8dea366b | 459 | block, domain, 1); |
a1d705ee TT |
460 | } |
461 | else if (current->alias == NULL) | |
462 | { | |
463 | /* If this import statement creates no alias, pass | |
464 | current->inner as NAMESPACE to direct the search | |
465 | towards the imported namespace. */ | |
55accf4a DE |
466 | sym = cp_lookup_symbol_via_imports (current->import_src, |
467 | name, block, | |
4bd0864e | 468 | domain, 1, 0, 0); |
a1d705ee | 469 | } |
a1d705ee | 470 | |
d12307c1 | 471 | if (sym.symbol != NULL) |
a1d705ee | 472 | return sym; |
8540c487 SW |
473 | } |
474 | } | |
475 | ||
b6b80672 | 476 | return null_block_symbol; |
8540c487 SW |
477 | } |
478 | ||
d5ff0482 | 479 | /* Helper function that searches an array of symbols for one named NAME. */ |
34eaf542 TT |
480 | |
481 | static struct symbol * | |
aff410f1 MS |
482 | search_symbol_list (const char *name, int num, |
483 | struct symbol **syms) | |
34eaf542 TT |
484 | { |
485 | int i; | |
486 | ||
487 | /* Maybe we should store a dictionary in here instead. */ | |
488 | for (i = 0; i < num; ++i) | |
489 | { | |
490 | if (strcmp (name, SYMBOL_NATURAL_NAME (syms[i])) == 0) | |
491 | return syms[i]; | |
492 | } | |
493 | return NULL; | |
494 | } | |
495 | ||
55accf4a | 496 | /* Like cp_lookup_symbol_via_imports, but if BLOCK is a function, it |
34eaf542 TT |
497 | searches through the template parameters of the function and the |
498 | function's type. */ | |
499 | ||
d12307c1 | 500 | struct block_symbol |
34eaf542 TT |
501 | cp_lookup_symbol_imports_or_template (const char *scope, |
502 | const char *name, | |
503 | const struct block *block, | |
504 | const domain_enum domain) | |
505 | { | |
506 | struct symbol *function = BLOCK_FUNCTION (block); | |
d12307c1 | 507 | struct block_symbol result; |
cc485e62 DE |
508 | |
509 | if (symbol_lookup_debug) | |
510 | { | |
511 | fprintf_unfiltered (gdb_stdlog, | |
512 | "cp_lookup_symbol_imports_or_template" | |
513 | " (%s, %s, %s, %s)\n", | |
514 | scope, name, host_address_to_string (block), | |
515 | domain_name (domain)); | |
516 | } | |
34eaf542 TT |
517 | |
518 | if (function != NULL && SYMBOL_LANGUAGE (function) == language_cplus) | |
519 | { | |
34eaf542 TT |
520 | /* Search the function's template parameters. */ |
521 | if (SYMBOL_IS_CPLUS_TEMPLATE_FUNCTION (function)) | |
522 | { | |
791244be | 523 | struct template_symbol *templ |
aff410f1 | 524 | = (struct template_symbol *) function; |
d12307c1 PMR |
525 | struct symbol *sym = search_symbol_list (name, |
526 | templ->n_template_arguments, | |
527 | templ->template_arguments); | |
34eaf542 | 528 | |
d12307c1 | 529 | if (sym != NULL) |
cc485e62 DE |
530 | { |
531 | if (symbol_lookup_debug) | |
532 | { | |
533 | fprintf_unfiltered (gdb_stdlog, | |
534 | "cp_lookup_symbol_imports_or_template" | |
535 | " (...) = %s\n", | |
d12307c1 | 536 | host_address_to_string (sym)); |
cc485e62 | 537 | } |
d12307c1 | 538 | return (struct block_symbol) {sym, block}; |
cc485e62 | 539 | } |
34eaf542 TT |
540 | } |
541 | ||
542 | /* Search the template parameters of the function's defining | |
543 | context. */ | |
544 | if (SYMBOL_NATURAL_NAME (function)) | |
545 | { | |
546 | struct type *context; | |
05d49c37 | 547 | std::string name_copy (SYMBOL_NATURAL_NAME (function)); |
34eaf542 | 548 | const struct language_defn *lang = language_def (language_cplus); |
08be3fe3 | 549 | struct gdbarch *arch = symbol_arch (function); |
34eaf542 | 550 | const struct block *parent = BLOCK_SUPERBLOCK (block); |
d12307c1 | 551 | struct symbol *sym; |
34eaf542 TT |
552 | |
553 | while (1) | |
554 | { | |
05d49c37 TT |
555 | unsigned int prefix_len |
556 | = cp_entire_prefix_len (name_copy.c_str ()); | |
34eaf542 TT |
557 | |
558 | if (prefix_len == 0) | |
559 | context = NULL; | |
560 | else | |
561 | { | |
05d49c37 | 562 | name_copy.erase (prefix_len); |
aff410f1 | 563 | context = lookup_typename (lang, arch, |
05d49c37 | 564 | name_copy.c_str (), |
aff410f1 | 565 | parent, 1); |
34eaf542 TT |
566 | } |
567 | ||
568 | if (context == NULL) | |
569 | break; | |
570 | ||
d12307c1 | 571 | sym |
aff410f1 MS |
572 | = search_symbol_list (name, |
573 | TYPE_N_TEMPLATE_ARGUMENTS (context), | |
574 | TYPE_TEMPLATE_ARGUMENTS (context)); | |
d12307c1 | 575 | if (sym != NULL) |
c27e16e3 | 576 | { |
cc485e62 DE |
577 | if (symbol_lookup_debug) |
578 | { | |
d12307c1 PMR |
579 | fprintf_unfiltered |
580 | (gdb_stdlog, | |
581 | "cp_lookup_symbol_imports_or_template (...) = %s\n", | |
582 | host_address_to_string (sym)); | |
cc485e62 | 583 | } |
d12307c1 | 584 | return (struct block_symbol) {sym, parent}; |
c27e16e3 | 585 | } |
34eaf542 | 586 | } |
34eaf542 TT |
587 | } |
588 | } | |
589 | ||
4bd0864e | 590 | result = cp_lookup_symbol_via_imports (scope, name, block, domain, 0, 1, 1); |
cc485e62 DE |
591 | if (symbol_lookup_debug) |
592 | { | |
593 | fprintf_unfiltered (gdb_stdlog, | |
594 | "cp_lookup_symbol_imports_or_template (...) = %s\n", | |
d12307c1 PMR |
595 | result.symbol != NULL |
596 | ? host_address_to_string (result.symbol) : "NULL"); | |
cc485e62 DE |
597 | } |
598 | return result; | |
34eaf542 TT |
599 | } |
600 | ||
f953163f DE |
601 | /* Search for NAME by applying relevant import statements belonging to BLOCK |
602 | and its parents. SCOPE is the namespace scope of the context in which the | |
603 | search is being evaluated. */ | |
604 | ||
d12307c1 | 605 | static struct block_symbol |
f953163f DE |
606 | cp_lookup_symbol_via_all_imports (const char *scope, const char *name, |
607 | const struct block *block, | |
608 | const domain_enum domain) | |
609 | { | |
d12307c1 | 610 | struct block_symbol sym; |
f953163f DE |
611 | |
612 | while (block != NULL) | |
613 | { | |
614 | sym = cp_lookup_symbol_via_imports (scope, name, block, domain, 0, 0, 1); | |
d12307c1 | 615 | if (sym.symbol) |
f953163f DE |
616 | return sym; |
617 | ||
618 | block = BLOCK_SUPERBLOCK (block); | |
619 | } | |
620 | ||
b6b80672 | 621 | return null_block_symbol; |
f953163f DE |
622 | } |
623 | ||
791244be DE |
624 | /* Searches for NAME in the current namespace, and by applying |
625 | relevant import statements belonging to BLOCK and its parents. | |
626 | SCOPE is the namespace scope of the context in which the search is | |
627 | being evaluated. */ | |
8540c487 | 628 | |
d12307c1 | 629 | struct block_symbol |
8540c487 SW |
630 | cp_lookup_symbol_namespace (const char *scope, |
631 | const char *name, | |
8540c487 | 632 | const struct block *block, |
13387711 | 633 | const domain_enum domain) |
8540c487 | 634 | { |
d12307c1 | 635 | struct block_symbol sym; |
cc485e62 DE |
636 | |
637 | if (symbol_lookup_debug) | |
638 | { | |
639 | fprintf_unfiltered (gdb_stdlog, | |
640 | "cp_lookup_symbol_namespace (%s, %s, %s, %s)\n", | |
641 | scope, name, host_address_to_string (block), | |
642 | domain_name (domain)); | |
643 | } | |
644 | ||
13387711 | 645 | /* First, try to find the symbol in the given namespace. */ |
f953163f | 646 | sym = cp_lookup_symbol_in_namespace (scope, name, block, domain, 1); |
8540c487 | 647 | |
f953163f | 648 | /* Search for name in namespaces imported to this and parent blocks. */ |
d12307c1 | 649 | if (sym.symbol == NULL) |
f953163f | 650 | sym = cp_lookup_symbol_via_all_imports (scope, name, block, domain); |
8540c487 | 651 | |
cc485e62 DE |
652 | if (symbol_lookup_debug) |
653 | { | |
654 | fprintf_unfiltered (gdb_stdlog, | |
f953163f | 655 | "cp_lookup_symbol_namespace (...) = %s\n", |
d12307c1 PMR |
656 | sym.symbol != NULL |
657 | ? host_address_to_string (sym.symbol) : "NULL"); | |
cc485e62 | 658 | } |
f953163f | 659 | return sym; |
1fcb5155 DC |
660 | } |
661 | ||
662 | /* Lookup NAME at namespace scope (or, in C terms, in static and | |
663 | global variables). SCOPE is the namespace that the current | |
664 | function is defined within; only consider namespaces whose length | |
665 | is at least SCOPE_LEN. Other arguments are as in | |
666 | cp_lookup_symbol_nonlocal. | |
667 | ||
668 | For example, if we're within a function A::B::f and looking for a | |
3882f37a | 669 | symbol x, this will get called with NAME = "x", SCOPE = "A::B", and |
1fcb5155 DC |
670 | SCOPE_LEN = 0. It then calls itself with NAME and SCOPE the same, |
671 | but with SCOPE_LEN = 1. And then it calls itself with NAME and | |
672 | SCOPE the same, but with SCOPE_LEN = 4. This third call looks for | |
673 | "A::B::x"; if it doesn't find it, then the second call looks for | |
674 | "A::x", and if that call fails, then the first call looks for | |
675 | "x". */ | |
676 | ||
d12307c1 | 677 | static struct block_symbol |
1994afbf DE |
678 | lookup_namespace_scope (const struct language_defn *langdef, |
679 | const char *name, | |
1fcb5155 DC |
680 | const struct block *block, |
681 | const domain_enum domain, | |
1fcb5155 DC |
682 | const char *scope, |
683 | int scope_len) | |
684 | { | |
fe978cb0 | 685 | char *the_namespace; |
1fcb5155 DC |
686 | |
687 | if (scope[scope_len] != '\0') | |
688 | { | |
689 | /* Recursively search for names in child namespaces first. */ | |
690 | ||
d12307c1 | 691 | struct block_symbol sym; |
1fcb5155 DC |
692 | int new_scope_len = scope_len; |
693 | ||
694 | /* If the current scope is followed by "::", skip past that. */ | |
695 | if (new_scope_len != 0) | |
696 | { | |
697 | gdb_assert (scope[new_scope_len] == ':'); | |
698 | new_scope_len += 2; | |
699 | } | |
700 | new_scope_len += cp_find_first_component (scope + new_scope_len); | |
1994afbf | 701 | sym = lookup_namespace_scope (langdef, name, block, domain, |
aff410f1 | 702 | scope, new_scope_len); |
d12307c1 | 703 | if (sym.symbol != NULL) |
1fcb5155 DC |
704 | return sym; |
705 | } | |
706 | ||
707 | /* Okay, we didn't find a match in our children, so look for the | |
1994afbf DE |
708 | name in the current namespace. |
709 | ||
710 | If we there is no scope and we know we have a bare symbol, then short | |
711 | circuit everything and call cp_lookup_bare_symbol directly. | |
712 | This isn't an optimization, rather it allows us to pass LANGDEF which | |
713 | is needed for primitive type lookup. The test doesn't have to be | |
714 | perfect: if NAME is a bare symbol that our test doesn't catch (e.g., a | |
715 | template symbol with "::" in the argument list) then | |
716 | cp_lookup_symbol_in_namespace will catch it. */ | |
717 | ||
718 | if (scope_len == 0 && strchr (name, ':') == NULL) | |
719 | return cp_lookup_bare_symbol (langdef, name, block, domain, 1); | |
1fcb5155 | 720 | |
224c3ddb | 721 | the_namespace = (char *) alloca (scope_len + 1); |
fe978cb0 PA |
722 | strncpy (the_namespace, scope, scope_len); |
723 | the_namespace[scope_len] = '\0'; | |
724 | return cp_lookup_symbol_in_namespace (the_namespace, name, | |
8dea366b | 725 | block, domain, 1); |
1fcb5155 DC |
726 | } |
727 | ||
56286edf DE |
728 | /* The C++-specific version of name lookup for static and global |
729 | names. This makes sure that names get looked for in all namespaces | |
730 | that are in scope. NAME is the natural name of the symbol that | |
731 | we're looking for, BLOCK is the block that we're searching within, | |
732 | DOMAIN says what kind of symbols we're looking for. */ | |
733 | ||
d12307c1 | 734 | struct block_symbol |
f606139a DE |
735 | cp_lookup_symbol_nonlocal (const struct language_defn *langdef, |
736 | const char *name, | |
56286edf DE |
737 | const struct block *block, |
738 | const domain_enum domain) | |
739 | { | |
d12307c1 | 740 | struct block_symbol sym; |
56286edf DE |
741 | const char *scope = block_scope (block); |
742 | ||
cc485e62 DE |
743 | if (symbol_lookup_debug) |
744 | { | |
745 | fprintf_unfiltered (gdb_stdlog, | |
746 | "cp_lookup_symbol_non_local" | |
747 | " (%s, %s (scope %s), %s)\n", | |
748 | name, host_address_to_string (block), scope, | |
749 | domain_name (domain)); | |
750 | } | |
751 | ||
f953163f DE |
752 | /* First, try to find the symbol in the given namespace, and all |
753 | containing namespaces. */ | |
1994afbf | 754 | sym = lookup_namespace_scope (langdef, name, block, domain, scope, 0); |
56286edf | 755 | |
f953163f | 756 | /* Search for name in namespaces imported to this and parent blocks. */ |
d12307c1 | 757 | if (sym.symbol == NULL) |
f953163f DE |
758 | sym = cp_lookup_symbol_via_all_imports (scope, name, block, domain); |
759 | ||
cc485e62 DE |
760 | if (symbol_lookup_debug) |
761 | { | |
762 | fprintf_unfiltered (gdb_stdlog, | |
763 | "cp_lookup_symbol_nonlocal (...) = %s\n", | |
d12307c1 PMR |
764 | (sym.symbol != NULL |
765 | ? host_address_to_string (sym.symbol) | |
766 | : "NULL")); | |
cc485e62 DE |
767 | } |
768 | return sym; | |
56286edf DE |
769 | } |
770 | ||
f7e3ecae KS |
771 | /* Search through the base classes of PARENT_TYPE for a base class |
772 | named NAME and return its type. If not found, return NULL. */ | |
773 | ||
774 | struct type * | |
a07e3e18 | 775 | cp_find_type_baseclass_by_name (struct type *parent_type, const char *name) |
f7e3ecae KS |
776 | { |
777 | int i; | |
778 | ||
f168693b | 779 | parent_type = check_typedef (parent_type); |
f7e3ecae KS |
780 | for (i = 0; i < TYPE_N_BASECLASSES (parent_type); ++i) |
781 | { | |
782 | struct type *type = check_typedef (TYPE_BASECLASS (parent_type, i)); | |
783 | const char *base_name = TYPE_BASECLASS_NAME (parent_type, i); | |
784 | ||
785 | if (base_name == NULL) | |
786 | continue; | |
787 | ||
788 | if (streq (base_name, name)) | |
789 | return type; | |
790 | ||
a07e3e18 | 791 | type = cp_find_type_baseclass_by_name (type, name); |
f7e3ecae KS |
792 | if (type != NULL) |
793 | return type; | |
794 | } | |
795 | ||
796 | return NULL; | |
797 | } | |
798 | ||
8dea366b KS |
799 | /* Search through the base classes of PARENT_TYPE for a symbol named |
800 | NAME in block BLOCK. */ | |
801 | ||
d12307c1 | 802 | static struct block_symbol |
8dea366b | 803 | find_symbol_in_baseclass (struct type *parent_type, const char *name, |
4dcabcc2 DE |
804 | const struct block *block, const domain_enum domain, |
805 | int is_in_anonymous) | |
8dea366b KS |
806 | { |
807 | int i; | |
d12307c1 | 808 | struct block_symbol sym; |
8dea366b | 809 | |
d12307c1 PMR |
810 | sym.symbol = NULL; |
811 | sym.block = NULL; | |
791244be | 812 | |
8dea366b KS |
813 | for (i = 0; i < TYPE_N_BASECLASSES (parent_type); ++i) |
814 | { | |
69fc87c2 | 815 | struct type *base_type = TYPE_BASECLASS (parent_type, i); |
8dea366b KS |
816 | const char *base_name = TYPE_BASECLASS_NAME (parent_type, i); |
817 | ||
818 | if (base_name == NULL) | |
819 | continue; | |
820 | ||
05d49c37 | 821 | std::string concatenated_name = std::string (base_name) + "::" + name; |
8dea366b | 822 | |
05d49c37 TT |
823 | sym = cp_lookup_nested_symbol_1 (base_type, name, |
824 | concatenated_name.c_str (), | |
4dcabcc2 | 825 | block, domain, 1, is_in_anonymous); |
d12307c1 | 826 | if (sym.symbol != NULL) |
69fc87c2 | 827 | break; |
8dea366b KS |
828 | } |
829 | ||
0c2e6019 | 830 | return sym; |
5c4e30ca DC |
831 | } |
832 | ||
4dcabcc2 DE |
833 | /* Helper function to look up NESTED_NAME in CONTAINER_TYPE and in DOMAIN |
834 | and within the context of BLOCK. | |
d5ff0482 | 835 | NESTED_NAME may have scope ("::"). |
6f27419a DE |
836 | CONTAINER_TYPE needn't have been "check_typedef'd" yet. |
837 | CONCATENATED_NAME is the fully scoped spelling of NESTED_NAME, it is | |
838 | passed as an argument so that callers can control how space for it is | |
839 | allocated. | |
840 | If BASIC_LOOKUP is non-zero then perform a basic lookup of | |
96553a0c DE |
841 | CONCATENATED_NAME. See cp_basic_lookup_symbol for details. |
842 | If IS_IN_ANONYMOUS is non-zero then CONCATENATED_NAME is in an anonymous | |
843 | namespace. */ | |
6f27419a | 844 | |
d12307c1 | 845 | static struct block_symbol |
6f27419a DE |
846 | cp_lookup_nested_symbol_1 (struct type *container_type, |
847 | const char *nested_name, | |
848 | const char *concatenated_name, | |
849 | const struct block *block, | |
4dcabcc2 | 850 | const domain_enum domain, |
96553a0c | 851 | int basic_lookup, int is_in_anonymous) |
6f27419a | 852 | { |
d12307c1 | 853 | struct block_symbol sym; |
6f27419a DE |
854 | |
855 | /* NOTE: carlton/2003-11-10: We don't treat C++ class members | |
856 | of classes like, say, data or function members. Instead, | |
857 | they're just represented by symbols whose names are | |
858 | qualified by the name of the surrounding class. This is | |
859 | just like members of namespaces; in particular, | |
860 | cp_basic_lookup_symbol works when looking them up. */ | |
861 | ||
862 | if (basic_lookup) | |
863 | { | |
4dcabcc2 | 864 | sym = cp_basic_lookup_symbol (concatenated_name, block, domain, |
6f27419a | 865 | is_in_anonymous); |
d12307c1 | 866 | if (sym.symbol != NULL) |
6f27419a DE |
867 | return sym; |
868 | } | |
869 | ||
870 | /* Now search all static file-level symbols. We have to do this for things | |
871 | like typedefs in the class. We do not try to guess any imported | |
872 | namespace as even the fully specified namespace search is already not | |
873 | C++ compliant and more assumptions could make it too magic. */ | |
874 | ||
875 | /* First search in this symtab, what we want is possibly there. */ | |
4dcabcc2 | 876 | sym = lookup_symbol_in_static_block (concatenated_name, block, domain); |
d12307c1 | 877 | if (sym.symbol != NULL) |
6f27419a DE |
878 | return sym; |
879 | ||
880 | /* Nope. We now have to search all static blocks in all objfiles, | |
881 | even if block != NULL, because there's no guarantees as to which | |
96553a0c DE |
882 | symtab the symbol we want is in. Except for symbols defined in |
883 | anonymous namespaces should be treated as local to a single file, | |
884 | which we just searched. */ | |
885 | if (!is_in_anonymous) | |
886 | { | |
4dcabcc2 | 887 | sym = lookup_static_symbol (concatenated_name, domain); |
d12307c1 | 888 | if (sym.symbol != NULL) |
96553a0c DE |
889 | return sym; |
890 | } | |
6f27419a DE |
891 | |
892 | /* If this is a class with baseclasses, search them next. */ | |
f168693b | 893 | container_type = check_typedef (container_type); |
6f27419a DE |
894 | if (TYPE_N_BASECLASSES (container_type) > 0) |
895 | { | |
96553a0c | 896 | sym = find_symbol_in_baseclass (container_type, nested_name, block, |
4dcabcc2 | 897 | domain, is_in_anonymous); |
d12307c1 | 898 | if (sym.symbol != NULL) |
6f27419a DE |
899 | return sym; |
900 | } | |
901 | ||
b6b80672 | 902 | return null_block_symbol; |
6f27419a DE |
903 | } |
904 | ||
50af5481 | 905 | /* Look up a symbol named NESTED_NAME that is nested inside the C++ |
79c2c32d | 906 | class or namespace given by PARENT_TYPE, from within the context |
4dcabcc2 DE |
907 | given by BLOCK, and in DOMAIN. |
908 | Return NULL if there is no such nested symbol. */ | |
79c2c32d | 909 | |
d12307c1 | 910 | struct block_symbol |
50af5481 JK |
911 | cp_lookup_nested_symbol (struct type *parent_type, |
912 | const char *nested_name, | |
4dcabcc2 DE |
913 | const struct block *block, |
914 | const domain_enum domain) | |
79c2c32d | 915 | { |
05a6c3c8 | 916 | /* type_name_no_tag_or_error provides better error reporting using the |
d8228535 JK |
917 | original type. */ |
918 | struct type *saved_parent_type = parent_type; | |
919 | ||
f168693b | 920 | parent_type = check_typedef (parent_type); |
d8228535 | 921 | |
cc485e62 DE |
922 | if (symbol_lookup_debug) |
923 | { | |
924 | const char *type_name = type_name_no_tag (saved_parent_type); | |
925 | ||
926 | fprintf_unfiltered (gdb_stdlog, | |
4dcabcc2 | 927 | "cp_lookup_nested_symbol (%s, %s, %s, %s)\n", |
cc485e62 | 928 | type_name != NULL ? type_name : "unnamed", |
4dcabcc2 DE |
929 | nested_name, host_address_to_string (block), |
930 | domain_name (domain)); | |
cc485e62 DE |
931 | } |
932 | ||
79c2c32d DC |
933 | switch (TYPE_CODE (parent_type)) |
934 | { | |
63d06c5c | 935 | case TYPE_CODE_STRUCT: |
79c2c32d | 936 | case TYPE_CODE_NAMESPACE: |
48e32051 | 937 | case TYPE_CODE_UNION: |
3d567982 | 938 | case TYPE_CODE_ENUM: |
530e8392 KB |
939 | /* NOTE: Handle modules here as well, because Fortran is re-using the C++ |
940 | specific code to lookup nested symbols in modules, by calling the | |
941 | function pointer la_lookup_symbol_nonlocal, which ends up here. */ | |
942 | case TYPE_CODE_MODULE: | |
79c2c32d | 943 | { |
08850b56 | 944 | int size; |
d8228535 | 945 | const char *parent_name = type_name_no_tag_or_error (saved_parent_type); |
d12307c1 | 946 | struct block_symbol sym; |
41f62f39 | 947 | char *concatenated_name; |
96553a0c | 948 | int is_in_anonymous; |
c5504eaf | 949 | |
08850b56 | 950 | size = strlen (parent_name) + 2 + strlen (nested_name) + 1; |
224c3ddb | 951 | concatenated_name = (char *) alloca (size); |
08850b56 | 952 | xsnprintf (concatenated_name, size, "%s::%s", |
6f27419a | 953 | parent_name, nested_name); |
96553a0c | 954 | is_in_anonymous = cp_is_in_anonymous (concatenated_name); |
6f27419a DE |
955 | |
956 | sym = cp_lookup_nested_symbol_1 (parent_type, nested_name, | |
4dcabcc2 DE |
957 | concatenated_name, block, domain, |
958 | 1, is_in_anonymous); | |
41f62f39 | 959 | |
cc485e62 DE |
960 | if (symbol_lookup_debug) |
961 | { | |
962 | fprintf_unfiltered (gdb_stdlog, | |
963 | "cp_lookup_nested_symbol (...) = %s\n", | |
d12307c1 PMR |
964 | (sym.symbol != NULL |
965 | ? host_address_to_string (sym.symbol) | |
966 | : "NULL")); | |
cc485e62 DE |
967 | } |
968 | return sym; | |
79c2c32d | 969 | } |
bb869963 SDJ |
970 | |
971 | case TYPE_CODE_FUNC: | |
972 | case TYPE_CODE_METHOD: | |
cc485e62 DE |
973 | if (symbol_lookup_debug) |
974 | { | |
975 | fprintf_unfiltered (gdb_stdlog, | |
976 | "cp_lookup_nested_symbol (...) = NULL" | |
977 | " (func/method)\n"); | |
978 | } | |
b6b80672 | 979 | return null_block_symbol; |
bb869963 | 980 | |
79c2c32d DC |
981 | default: |
982 | internal_error (__FILE__, __LINE__, | |
50af5481 | 983 | _("cp_lookup_nested_symbol called " |
3e43a32a | 984 | "on a non-aggregate type.")); |
79c2c32d DC |
985 | } |
986 | } | |
987 | ||
b368761e DC |
988 | /* The C++-version of lookup_transparent_type. */ |
989 | ||
990 | /* FIXME: carlton/2004-01-16: The problem that this is trying to | |
991 | address is that, unfortunately, sometimes NAME is wrong: it may not | |
992 | include the name of namespaces enclosing the type in question. | |
b021a221 | 993 | lookup_transparent_type gets called when the type in question |
b368761e DC |
994 | is a declaration, and we're trying to find its definition; but, for |
995 | declarations, our type name deduction mechanism doesn't work. | |
996 | There's nothing we can do to fix this in general, I think, in the | |
997 | absence of debug information about namespaces (I've filed PR | |
998 | gdb/1511 about this); until such debug information becomes more | |
999 | prevalent, one heuristic which sometimes looks is to search for the | |
1000 | definition in namespaces containing the current namespace. | |
1001 | ||
1002 | We should delete this functions once the appropriate debug | |
1003 | information becomes more widespread. (GCC 3.4 will be the first | |
1004 | released version of GCC with such information.) */ | |
1005 | ||
1006 | struct type * | |
1007 | cp_lookup_transparent_type (const char *name) | |
1008 | { | |
1009 | /* First, try the honest way of looking up the definition. */ | |
1010 | struct type *t = basic_lookup_transparent_type (name); | |
1011 | const char *scope; | |
1012 | ||
1013 | if (t != NULL) | |
1014 | return t; | |
1015 | ||
1016 | /* If that doesn't work and we're within a namespace, look there | |
1017 | instead. */ | |
1018 | scope = block_scope (get_selected_block (0)); | |
1019 | ||
1020 | if (scope[0] == '\0') | |
1021 | return NULL; | |
1022 | ||
1023 | return cp_lookup_transparent_type_loop (name, scope, 0); | |
1024 | } | |
1025 | ||
b021a221 MS |
1026 | /* Lookup the type definition associated to NAME in namespaces/classes |
1027 | containing SCOPE whose name is strictly longer than LENGTH. LENGTH | |
1028 | must be the index of the start of a component of SCOPE. */ | |
b368761e DC |
1029 | |
1030 | static struct type * | |
aff410f1 MS |
1031 | cp_lookup_transparent_type_loop (const char *name, |
1032 | const char *scope, | |
b368761e DC |
1033 | int length) |
1034 | { | |
1198ecbe | 1035 | int scope_length = length + cp_find_first_component (scope + length); |
b368761e DC |
1036 | char *full_name; |
1037 | ||
1038 | /* If the current scope is followed by "::", look in the next | |
1039 | component. */ | |
1040 | if (scope[scope_length] == ':') | |
1041 | { | |
1042 | struct type *retval | |
aff410f1 MS |
1043 | = cp_lookup_transparent_type_loop (name, scope, |
1044 | scope_length + 2); | |
c5504eaf | 1045 | |
b368761e DC |
1046 | if (retval != NULL) |
1047 | return retval; | |
1048 | } | |
1049 | ||
224c3ddb | 1050 | full_name = (char *) alloca (scope_length + 2 + strlen (name) + 1); |
b368761e DC |
1051 | strncpy (full_name, scope, scope_length); |
1052 | strncpy (full_name + scope_length, "::", 2); | |
1053 | strcpy (full_name + scope_length + 2, name); | |
1054 | ||
1055 | return basic_lookup_transparent_type (full_name); | |
1056 | } | |
1057 | ||
0c2e6019 TT |
1058 | /* This used to do something but was removed when it became |
1059 | obsolete. */ | |
5c4e30ca DC |
1060 | |
1061 | static void | |
32a7bf17 | 1062 | maintenance_cplus_namespace (const char *args, int from_tty) |
5c4e30ca | 1063 | { |
0c2e6019 | 1064 | printf_unfiltered (_("The `maint namespace' command was removed.\n")); |
5c4e30ca DC |
1065 | } |
1066 | ||
1067 | void | |
1068 | _initialize_cp_namespace (void) | |
1069 | { | |
0c2e6019 TT |
1070 | struct cmd_list_element *cmd; |
1071 | ||
1072 | cmd = add_cmd ("namespace", class_maintenance, | |
1073 | maintenance_cplus_namespace, | |
1074 | _("Deprecated placeholder for removed functionality."), | |
1075 | &maint_cplus_cmd_list); | |
1076 | deprecate_cmd (cmd, NULL); | |
1fcb5155 | 1077 | } |