Commit | Line | Data |
---|---|---|
9219021c | 1 | /* Helper routines for C++ support in GDB. |
42a4f53d | 2 | Copyright (C) 2003-2019 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" | |
d55e5aa6 | 22 | #include "cp-support.h" |
d55e5aa6 | 23 | #include "gdb_obstack.h" |
4de283e4 TT |
24 | #include "symtab.h" |
25 | #include "symfile.h" | |
26 | #include "block.h" | |
27 | #include "objfiles.h" | |
d55e5aa6 | 28 | #include "gdbtypes.h" |
4de283e4 TT |
29 | #include "dictionary.h" |
30 | #include "command.h" | |
31 | #include "frame.h" | |
32 | #include "buildsym.h" | |
34eaf542 | 33 | #include "language.h" |
22cee43f | 34 | #include "namespace.h" |
4de283e4 | 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 |
80e649fc TT |
53 | cp_scan_for_anonymous_namespaces (struct buildsym_compunit *compunit, |
54 | const struct symbol *const symbol, | |
a10964d1 | 55 | struct objfile *const objfile) |
9219021c | 56 | { |
df8a16a1 | 57 | if (SYMBOL_DEMANGLED_NAME (symbol) != NULL) |
9219021c | 58 | { |
df8a16a1 | 59 | const char *name = SYMBOL_DEMANGLED_NAME (symbol); |
9219021c DC |
60 | unsigned int previous_component; |
61 | unsigned int next_component; | |
9219021c DC |
62 | |
63 | /* Start with a quick-and-dirty check for mention of "(anonymous | |
64 | namespace)". */ | |
65 | ||
59da4d04 | 66 | if (!cp_is_in_anonymous (name)) |
9219021c DC |
67 | return; |
68 | ||
69 | previous_component = 0; | |
70 | next_component = cp_find_first_component (name + previous_component); | |
71 | ||
72 | while (name[next_component] == ':') | |
73 | { | |
2b1dbab0 KS |
74 | if (((next_component - previous_component) |
75 | == CP_ANONYMOUS_NAMESPACE_LEN) | |
9219021c | 76 | && strncmp (name + previous_component, |
2b1dbab0 KS |
77 | CP_ANONYMOUS_NAMESPACE_STR, |
78 | CP_ANONYMOUS_NAMESPACE_LEN) == 0) | |
9219021c | 79 | { |
aff410f1 MS |
80 | int dest_len = (previous_component == 0 |
81 | ? 0 : previous_component - 2); | |
8c902bb1 | 82 | int src_len = next_component; |
794684b6 | 83 | |
224c3ddb SM |
84 | char *dest = (char *) alloca (dest_len + 1); |
85 | char *src = (char *) alloca (src_len + 1); | |
794684b6 | 86 | |
8c902bb1 SW |
87 | memcpy (dest, name, dest_len); |
88 | memcpy (src, name, src_len); | |
794684b6 | 89 | |
8c902bb1 SW |
90 | dest[dest_len] = '\0'; |
91 | src[src_len] = '\0'; | |
794684b6 | 92 | |
9219021c DC |
93 | /* We've found a component of the name that's an |
94 | anonymous namespace. So add symbols in it to the | |
95 | namespace given by the previous component if there is | |
96 | one, or to the global namespace if there isn't. */ | |
eb1e02fd | 97 | std::vector<const char *> excludes; |
80e649fc TT |
98 | add_using_directive (compunit->get_local_using_directives (), |
99 | dest, src, NULL, NULL, excludes, | |
100 | 1, &objfile->objfile_obstack); | |
9219021c DC |
101 | } |
102 | /* The "+ 2" is for the "::". */ | |
103 | previous_component = next_component + 2; | |
104 | next_component = (previous_component | |
105 | + cp_find_first_component (name | |
106 | + previous_component)); | |
107 | } | |
108 | } | |
109 | } | |
110 | ||
9219021c DC |
111 | /* Test whether or not NAMESPACE looks like it mentions an anonymous |
112 | namespace; return nonzero if so. */ | |
113 | ||
114 | int | |
59da4d04 | 115 | cp_is_in_anonymous (const char *symbol_name) |
9219021c | 116 | { |
59da4d04 | 117 | return (strstr (symbol_name, CP_ANONYMOUS_NAMESPACE_STR) |
9219021c DC |
118 | != NULL); |
119 | } | |
120 | ||
6f27419a | 121 | /* Look up NAME in DOMAIN in BLOCK's static block and in global blocks. |
d5ff0482 | 122 | If IS_IN_ANONYMOUS is nonzero, the symbol in question is located |
6f27419a | 123 | within an anonymous namespace. */ |
34ef8452 | 124 | |
d12307c1 | 125 | static struct block_symbol |
6f27419a | 126 | cp_basic_lookup_symbol (const char *name, const struct block *block, |
d5ff0482 | 127 | const domain_enum domain, int is_in_anonymous) |
34ef8452 | 128 | { |
d12307c1 | 129 | struct block_symbol sym; |
34ef8452 DE |
130 | |
131 | sym = lookup_symbol_in_static_block (name, block, domain); | |
d12307c1 | 132 | if (sym.symbol != NULL) |
34ef8452 DE |
133 | return sym; |
134 | ||
d5ff0482 | 135 | if (is_in_anonymous) |
34ef8452 DE |
136 | { |
137 | /* Symbols defined in anonymous namespaces have external linkage | |
138 | but should be treated as local to a single file nonetheless. | |
139 | So we only search the current file's global block. */ | |
140 | ||
141 | const struct block *global_block = block_global_block (block); | |
791244be | 142 | |
34ef8452 | 143 | if (global_block != NULL) |
d12307c1 | 144 | { |
de63c46b PA |
145 | sym.symbol = lookup_symbol_in_block (name, |
146 | symbol_name_match_type::FULL, | |
147 | global_block, domain); | |
d12307c1 PMR |
148 | sym.block = global_block; |
149 | } | |
34ef8452 DE |
150 | } |
151 | else | |
d12307c1 | 152 | sym = lookup_global_symbol (name, block, domain); |
34ef8452 | 153 | |
6f27419a DE |
154 | return sym; |
155 | } | |
156 | ||
157 | /* Search bare symbol NAME in DOMAIN in BLOCK. | |
1994afbf DE |
158 | NAME is guaranteed to not have any scope (no "::") in its name, though |
159 | if for example NAME is a template spec then "::" may appear in the | |
160 | argument list. | |
161 | If LANGDEF is non-NULL then try to lookup NAME as a primitive type in | |
162 | that language. Normally we wouldn't need LANGDEF but fortran also uses | |
163 | this code. | |
6f27419a DE |
164 | If SEARCH is non-zero then see if we can determine "this" from BLOCK, and |
165 | if so then also search for NAME in that class. */ | |
166 | ||
d12307c1 | 167 | static struct block_symbol |
1994afbf DE |
168 | cp_lookup_bare_symbol (const struct language_defn *langdef, |
169 | const char *name, const struct block *block, | |
6f27419a DE |
170 | const domain_enum domain, int search) |
171 | { | |
d12307c1 | 172 | struct block_symbol sym; |
6f27419a DE |
173 | |
174 | /* Note: We can't do a simple assert for ':' not being in NAME because | |
175 | ':' may be in the args of a template spec. This isn't intended to be | |
176 | a complete test, just cheap and documentary. */ | |
177 | if (strchr (name, '<') == NULL && strchr (name, '(') == NULL) | |
1cafadb4 | 178 | gdb_assert (strstr (name, "::") == NULL); |
6f27419a DE |
179 | |
180 | sym = lookup_symbol_in_static_block (name, block, domain); | |
d12307c1 | 181 | if (sym.symbol != NULL) |
6f27419a DE |
182 | return sym; |
183 | ||
1994afbf DE |
184 | /* If we didn't find a definition for a builtin type in the static block, |
185 | search for it now. This is actually the right thing to do and can be | |
186 | a massive performance win. E.g., when debugging a program with lots of | |
187 | shared libraries we could search all of them only to find out the | |
188 | builtin type isn't defined in any of them. This is common for types | |
189 | like "void". */ | |
190 | if (langdef != NULL && domain == VAR_DOMAIN) | |
191 | { | |
192 | struct gdbarch *gdbarch; | |
193 | ||
194 | if (block == NULL) | |
195 | gdbarch = target_gdbarch (); | |
196 | else | |
197 | gdbarch = block_gdbarch (block); | |
d12307c1 PMR |
198 | sym.symbol |
199 | = language_lookup_primitive_type_as_symbol (langdef, gdbarch, name); | |
200 | sym.block = NULL; | |
201 | if (sym.symbol != NULL) | |
1994afbf DE |
202 | return sym; |
203 | } | |
204 | ||
6f27419a | 205 | sym = lookup_global_symbol (name, block, domain); |
d12307c1 | 206 | if (sym.symbol != NULL) |
34ef8452 DE |
207 | return sym; |
208 | ||
209 | if (search) | |
210 | { | |
d12307c1 | 211 | struct block_symbol lang_this; |
6f27419a | 212 | struct type *type; |
34ef8452 | 213 | |
41c977aa WT |
214 | lang_this.symbol = NULL; |
215 | ||
4f19a0e6 WT |
216 | if (langdef != NULL) |
217 | lang_this = lookup_language_this (langdef, block); | |
218 | ||
d12307c1 | 219 | if (lang_this.symbol == NULL) |
6640a367 | 220 | return {}; |
34ef8452 | 221 | |
4f19a0e6 | 222 | |
d12307c1 | 223 | type = check_typedef (TYPE_TARGET_TYPE (SYMBOL_TYPE (lang_this.symbol))); |
6f27419a DE |
224 | /* If TYPE_NAME is NULL, abandon trying to find this symbol. |
225 | This can happen for lambda functions compiled with clang++, | |
226 | which outputs no name for the container class. */ | |
227 | if (TYPE_NAME (type) == NULL) | |
6640a367 | 228 | return {}; |
34ef8452 | 229 | |
d5ff0482 | 230 | /* Look for symbol NAME in this class. */ |
4dcabcc2 | 231 | sym = cp_lookup_nested_symbol (type, name, block, domain); |
6f27419a | 232 | } |
34ef8452 | 233 | |
6f27419a DE |
234 | return sym; |
235 | } | |
34ef8452 | 236 | |
6f27419a DE |
237 | /* Search NAME in DOMAIN in all static blocks, and then in all baseclasses. |
238 | BLOCK specifies the context in which to perform the search. | |
239 | NAME is guaranteed to have scope (contain "::") and PREFIX_LEN specifies | |
d5ff0482 | 240 | the length of the entire scope of NAME (up to, but not including, the last |
6f27419a | 241 | "::". |
34ef8452 | 242 | |
6f27419a DE |
243 | Note: At least in the case of Fortran, which also uses this code, there |
244 | may be no text after the last "::". */ | |
34ef8452 | 245 | |
d12307c1 | 246 | static struct block_symbol |
6f27419a DE |
247 | cp_search_static_and_baseclasses (const char *name, |
248 | const struct block *block, | |
249 | const domain_enum domain, | |
96553a0c DE |
250 | unsigned int prefix_len, |
251 | int is_in_anonymous) | |
6f27419a | 252 | { |
1cafadb4 DB |
253 | /* Check for malformed input. */ |
254 | if (prefix_len + 2 > strlen (name) || name[prefix_len + 1] != ':') | |
6640a367 | 255 | return {}; |
34ef8452 | 256 | |
e68cb8e0 PA |
257 | /* The class, namespace or function name is everything up to and |
258 | including PREFIX_LEN. */ | |
259 | std::string scope (name, prefix_len); | |
6f27419a DE |
260 | |
261 | /* The rest of the name is everything else past the initial scope | |
262 | operator. */ | |
e68cb8e0 PA |
263 | const char *nested = name + prefix_len + 2; |
264 | ||
265 | /* Lookup the scope symbol. If none is found, there is nothing more | |
266 | that can be done. SCOPE could be a namespace, so always look in | |
267 | VAR_DOMAIN. This works for classes too because of | |
268 | symbol_matches_domain (which should be replaced with something | |
269 | else, but it's what we have today). */ | |
270 | block_symbol scope_sym = lookup_symbol_in_static_block (scope.c_str (), | |
271 | block, VAR_DOMAIN); | |
272 | if (scope_sym.symbol == NULL) | |
273 | scope_sym = lookup_global_symbol (scope.c_str (), block, VAR_DOMAIN); | |
274 | if (scope_sym.symbol == NULL) | |
6640a367 | 275 | return {}; |
6f27419a | 276 | |
e68cb8e0 PA |
277 | struct type *scope_type = SYMBOL_TYPE (scope_sym.symbol); |
278 | ||
279 | /* If the scope is a function/method, then look up NESTED as a local | |
280 | static variable. E.g., "print 'function()::static_var'". */ | |
0a4b0913 AB |
281 | if ((TYPE_CODE (scope_type) == TYPE_CODE_FUNC |
282 | || TYPE_CODE (scope_type) == TYPE_CODE_METHOD) | |
283 | && domain == VAR_DOMAIN) | |
e68cb8e0 PA |
284 | return lookup_symbol (nested, SYMBOL_BLOCK_VALUE (scope_sym.symbol), |
285 | VAR_DOMAIN, NULL); | |
286 | ||
287 | /* Look for a symbol named NESTED in this class/namespace. | |
6f27419a DE |
288 | The caller is assumed to have already have done a basic lookup of NAME. |
289 | So we pass zero for BASIC_LOOKUP to cp_lookup_nested_symbol_1 here. */ | |
e68cb8e0 PA |
290 | return cp_lookup_nested_symbol_1 (scope_type, nested, name, |
291 | block, domain, 0, is_in_anonymous); | |
34ef8452 DE |
292 | } |
293 | ||
aff410f1 | 294 | /* Look up NAME in the C++ namespace NAMESPACE. Other arguments are |
8dea366b | 295 | as in cp_lookup_symbol_nonlocal. If SEARCH is non-zero, search |
6f27419a DE |
296 | through base classes for a matching symbol. |
297 | ||
298 | Note: Part of the complexity is because NAME may itself specify scope. | |
299 | Part of the complexity is also because this handles the case where | |
300 | there is no scoping in which case we also try looking in the class of | |
301 | "this" if we can compute it. */ | |
8540c487 | 302 | |
d12307c1 | 303 | static struct block_symbol |
fe978cb0 | 304 | cp_lookup_symbol_in_namespace (const char *the_namespace, const char *name, |
6f27419a DE |
305 | const struct block *block, |
306 | const domain_enum domain, int search) | |
8540c487 | 307 | { |
d2763117 | 308 | char *concatenated_name = NULL; |
6f27419a DE |
309 | int is_in_anonymous; |
310 | unsigned int prefix_len; | |
d12307c1 | 311 | struct block_symbol sym; |
c5504eaf | 312 | |
fe978cb0 | 313 | if (the_namespace[0] != '\0') |
d2763117 | 314 | { |
224c3ddb SM |
315 | concatenated_name |
316 | = (char *) alloca (strlen (the_namespace) + 2 + strlen (name) + 1); | |
fe978cb0 | 317 | strcpy (concatenated_name, the_namespace); |
8540c487 SW |
318 | strcat (concatenated_name, "::"); |
319 | strcat (concatenated_name, name); | |
d2763117 | 320 | name = concatenated_name; |
8540c487 | 321 | } |
d2763117 | 322 | |
6f27419a DE |
323 | prefix_len = cp_entire_prefix_len (name); |
324 | if (prefix_len == 0) | |
1994afbf | 325 | return cp_lookup_bare_symbol (NULL, name, block, domain, search); |
6f27419a DE |
326 | |
327 | /* This would be simpler if we just called cp_lookup_nested_symbol | |
328 | at this point. But that would require first looking up the containing | |
329 | class/namespace. Since we're only searching static and global blocks | |
330 | there's often no need to first do that lookup. */ | |
331 | ||
fe978cb0 PA |
332 | is_in_anonymous |
333 | = the_namespace[0] != '\0' && cp_is_in_anonymous (the_namespace); | |
6f27419a | 334 | sym = cp_basic_lookup_symbol (name, block, domain, is_in_anonymous); |
d12307c1 | 335 | if (sym.symbol != NULL) |
6f27419a DE |
336 | return sym; |
337 | ||
338 | if (search) | |
96553a0c DE |
339 | sym = cp_search_static_and_baseclasses (name, block, domain, prefix_len, |
340 | is_in_anonymous); | |
6f27419a DE |
341 | |
342 | return sym; | |
8540c487 SW |
343 | } |
344 | ||
aff410f1 MS |
345 | /* Search for NAME by applying all import statements belonging to |
346 | BLOCK which are applicable in SCOPE. If DECLARATION_ONLY the | |
347 | search is restricted to using declarations. | |
13387711 SW |
348 | Example: |
349 | ||
aff410f1 | 350 | namespace A { |
13387711 SW |
351 | int x; |
352 | } | |
353 | using A::x; | |
354 | ||
aff410f1 MS |
355 | If SEARCH_PARENTS the search will include imports which are |
356 | applicable in parents of SCOPE. | |
b14e635e SW |
357 | Example: |
358 | ||
aff410f1 | 359 | namespace A { |
b14e635e | 360 | using namespace X; |
aff410f1 | 361 | namespace B { |
b14e635e SW |
362 | using namespace Y; |
363 | } | |
364 | } | |
365 | ||
aff410f1 MS |
366 | If SCOPE is "A::B" and SEARCH_PARENTS is true the imports of |
367 | namespaces X and Y will be considered. If SEARCH_PARENTS is false | |
4bd0864e DE |
368 | only the import of Y is considered. |
369 | ||
370 | SEARCH_SCOPE_FIRST is an internal implementation detail: Callers must | |
371 | pass 0 for it. Internally we pass 1 when recursing. */ | |
8540c487 | 372 | |
d12307c1 | 373 | static struct block_symbol |
55accf4a DE |
374 | cp_lookup_symbol_via_imports (const char *scope, |
375 | const char *name, | |
376 | const struct block *block, | |
377 | const domain_enum domain, | |
4bd0864e | 378 | const int search_scope_first, |
55accf4a DE |
379 | const int declaration_only, |
380 | const int search_parents) | |
8540c487 | 381 | { |
b14e635e | 382 | struct using_direct *current; |
6640a367 | 383 | struct block_symbol sym = {}; |
8540c487 | 384 | int len; |
b14e635e | 385 | int directive_match; |
8540c487 | 386 | |
4bd0864e DE |
387 | /* First, try to find the symbol in the given namespace if requested. */ |
388 | if (search_scope_first) | |
aff410f1 | 389 | sym = cp_lookup_symbol_in_namespace (scope, name, |
8dea366b | 390 | block, domain, 1); |
791244be | 391 | |
d12307c1 | 392 | if (sym.symbol != NULL) |
8540c487 SW |
393 | return sym; |
394 | ||
aff410f1 MS |
395 | /* Go through the using directives. If any of them add new names to |
396 | the namespace we're searching in, see if we can find a match by | |
397 | applying them. */ | |
8540c487 SW |
398 | |
399 | for (current = block_using (block); | |
400 | current != NULL; | |
401 | current = current->next) | |
402 | { | |
32019081 JK |
403 | const char **excludep; |
404 | ||
b14e635e SW |
405 | len = strlen (current->import_dest); |
406 | directive_match = (search_parents | |
61012eef | 407 | ? (startswith (scope, current->import_dest) |
b14e635e | 408 | && (len == 0 |
aff410f1 MS |
409 | || scope[len] == ':' |
410 | || scope[len] == '\0')) | |
b14e635e | 411 | : strcmp (scope, current->import_dest) == 0); |
8540c487 | 412 | |
aff410f1 MS |
413 | /* If the import destination is the current scope or one of its |
414 | ancestors then it is applicable. */ | |
b14e635e | 415 | if (directive_match && !current->searched) |
8540c487 | 416 | { |
a1d705ee TT |
417 | /* Mark this import as searched so that the recursive call |
418 | does not search it again. */ | |
167b0be1 TT |
419 | scoped_restore reset_directive_searched |
420 | = make_scoped_restore (¤t->searched, 1); | |
a1d705ee TT |
421 | |
422 | /* If there is an import of a single declaration, compare the | |
423 | imported declaration (after optional renaming by its alias) | |
424 | with the sought out name. If there is a match pass | |
425 | current->import_src as NAMESPACE to direct the search | |
426 | towards the imported namespace. */ | |
427 | if (current->declaration | |
428 | && strcmp (name, current->alias | |
429 | ? current->alias : current->declaration) == 0) | |
430 | sym = cp_lookup_symbol_in_namespace (current->import_src, | |
431 | current->declaration, | |
8dea366b | 432 | block, domain, 1); |
a1d705ee TT |
433 | |
434 | /* If this is a DECLARATION_ONLY search or a symbol was found | |
435 | or this import statement was an import declaration, the | |
436 | search of this import is complete. */ | |
d12307c1 | 437 | if (declaration_only || sym.symbol != NULL || current->declaration) |
a1d705ee | 438 | { |
d12307c1 | 439 | if (sym.symbol != NULL) |
a1d705ee TT |
440 | return sym; |
441 | ||
442 | continue; | |
443 | } | |
444 | ||
445 | /* Do not follow CURRENT if NAME matches its EXCLUDES. */ | |
446 | for (excludep = current->excludes; *excludep; excludep++) | |
447 | if (strcmp (name, *excludep) == 0) | |
448 | break; | |
449 | if (*excludep) | |
167b0be1 | 450 | continue; |
a1d705ee TT |
451 | |
452 | if (current->alias != NULL | |
453 | && strcmp (name, current->alias) == 0) | |
454 | /* If the import is creating an alias and the alias matches | |
455 | the sought name. Pass current->import_src as the NAME to | |
456 | direct the search towards the aliased namespace. */ | |
457 | { | |
458 | sym = cp_lookup_symbol_in_namespace (scope, | |
459 | current->import_src, | |
8dea366b | 460 | block, domain, 1); |
a1d705ee TT |
461 | } |
462 | else if (current->alias == NULL) | |
463 | { | |
464 | /* If this import statement creates no alias, pass | |
465 | current->inner as NAMESPACE to direct the search | |
466 | towards the imported namespace. */ | |
55accf4a DE |
467 | sym = cp_lookup_symbol_via_imports (current->import_src, |
468 | name, block, | |
4bd0864e | 469 | domain, 1, 0, 0); |
a1d705ee | 470 | } |
a1d705ee | 471 | |
d12307c1 | 472 | if (sym.symbol != NULL) |
a1d705ee | 473 | return sym; |
8540c487 SW |
474 | } |
475 | } | |
476 | ||
6640a367 | 477 | return {}; |
8540c487 SW |
478 | } |
479 | ||
d5ff0482 | 480 | /* Helper function that searches an array of symbols for one named NAME. */ |
34eaf542 TT |
481 | |
482 | static struct symbol * | |
aff410f1 MS |
483 | search_symbol_list (const char *name, int num, |
484 | struct symbol **syms) | |
34eaf542 TT |
485 | { |
486 | int i; | |
487 | ||
488 | /* Maybe we should store a dictionary in here instead. */ | |
489 | for (i = 0; i < num; ++i) | |
490 | { | |
491 | if (strcmp (name, SYMBOL_NATURAL_NAME (syms[i])) == 0) | |
492 | return syms[i]; | |
493 | } | |
494 | return NULL; | |
495 | } | |
496 | ||
55accf4a | 497 | /* Like cp_lookup_symbol_via_imports, but if BLOCK is a function, it |
34eaf542 TT |
498 | searches through the template parameters of the function and the |
499 | function's type. */ | |
500 | ||
d12307c1 | 501 | struct block_symbol |
34eaf542 TT |
502 | cp_lookup_symbol_imports_or_template (const char *scope, |
503 | const char *name, | |
504 | const struct block *block, | |
505 | const domain_enum domain) | |
506 | { | |
507 | struct symbol *function = BLOCK_FUNCTION (block); | |
d12307c1 | 508 | struct block_symbol result; |
cc485e62 DE |
509 | |
510 | if (symbol_lookup_debug) | |
511 | { | |
512 | fprintf_unfiltered (gdb_stdlog, | |
513 | "cp_lookup_symbol_imports_or_template" | |
514 | " (%s, %s, %s, %s)\n", | |
515 | scope, name, host_address_to_string (block), | |
516 | domain_name (domain)); | |
517 | } | |
34eaf542 TT |
518 | |
519 | if (function != NULL && SYMBOL_LANGUAGE (function) == language_cplus) | |
520 | { | |
34eaf542 TT |
521 | /* Search the function's template parameters. */ |
522 | if (SYMBOL_IS_CPLUS_TEMPLATE_FUNCTION (function)) | |
523 | { | |
791244be | 524 | struct template_symbol *templ |
aff410f1 | 525 | = (struct template_symbol *) function; |
d12307c1 PMR |
526 | struct symbol *sym = search_symbol_list (name, |
527 | templ->n_template_arguments, | |
528 | templ->template_arguments); | |
34eaf542 | 529 | |
d12307c1 | 530 | if (sym != NULL) |
cc485e62 DE |
531 | { |
532 | if (symbol_lookup_debug) | |
533 | { | |
534 | fprintf_unfiltered (gdb_stdlog, | |
535 | "cp_lookup_symbol_imports_or_template" | |
536 | " (...) = %s\n", | |
d12307c1 | 537 | host_address_to_string (sym)); |
cc485e62 | 538 | } |
d12307c1 | 539 | return (struct block_symbol) {sym, block}; |
cc485e62 | 540 | } |
34eaf542 TT |
541 | } |
542 | ||
543 | /* Search the template parameters of the function's defining | |
544 | context. */ | |
545 | if (SYMBOL_NATURAL_NAME (function)) | |
546 | { | |
547 | struct type *context; | |
05d49c37 | 548 | std::string name_copy (SYMBOL_NATURAL_NAME (function)); |
34eaf542 | 549 | const struct language_defn *lang = language_def (language_cplus); |
08be3fe3 | 550 | struct gdbarch *arch = symbol_arch (function); |
34eaf542 | 551 | const struct block *parent = BLOCK_SUPERBLOCK (block); |
d12307c1 | 552 | struct symbol *sym; |
34eaf542 TT |
553 | |
554 | while (1) | |
555 | { | |
05d49c37 TT |
556 | unsigned int prefix_len |
557 | = cp_entire_prefix_len (name_copy.c_str ()); | |
34eaf542 TT |
558 | |
559 | if (prefix_len == 0) | |
560 | context = NULL; | |
561 | else | |
562 | { | |
05d49c37 | 563 | name_copy.erase (prefix_len); |
aff410f1 | 564 | context = lookup_typename (lang, arch, |
05d49c37 | 565 | name_copy.c_str (), |
aff410f1 | 566 | parent, 1); |
34eaf542 TT |
567 | } |
568 | ||
569 | if (context == NULL) | |
570 | break; | |
571 | ||
d12307c1 | 572 | sym |
aff410f1 MS |
573 | = search_symbol_list (name, |
574 | TYPE_N_TEMPLATE_ARGUMENTS (context), | |
575 | TYPE_TEMPLATE_ARGUMENTS (context)); | |
d12307c1 | 576 | if (sym != NULL) |
c27e16e3 | 577 | { |
cc485e62 DE |
578 | if (symbol_lookup_debug) |
579 | { | |
d12307c1 PMR |
580 | fprintf_unfiltered |
581 | (gdb_stdlog, | |
582 | "cp_lookup_symbol_imports_or_template (...) = %s\n", | |
583 | host_address_to_string (sym)); | |
cc485e62 | 584 | } |
d12307c1 | 585 | return (struct block_symbol) {sym, parent}; |
c27e16e3 | 586 | } |
34eaf542 | 587 | } |
34eaf542 TT |
588 | } |
589 | } | |
590 | ||
4bd0864e | 591 | result = cp_lookup_symbol_via_imports (scope, name, block, domain, 0, 1, 1); |
cc485e62 DE |
592 | if (symbol_lookup_debug) |
593 | { | |
594 | fprintf_unfiltered (gdb_stdlog, | |
595 | "cp_lookup_symbol_imports_or_template (...) = %s\n", | |
d12307c1 PMR |
596 | result.symbol != NULL |
597 | ? host_address_to_string (result.symbol) : "NULL"); | |
cc485e62 DE |
598 | } |
599 | return result; | |
34eaf542 TT |
600 | } |
601 | ||
f953163f DE |
602 | /* Search for NAME by applying relevant import statements belonging to BLOCK |
603 | and its parents. SCOPE is the namespace scope of the context in which the | |
604 | search is being evaluated. */ | |
605 | ||
d12307c1 | 606 | static struct block_symbol |
f953163f DE |
607 | cp_lookup_symbol_via_all_imports (const char *scope, const char *name, |
608 | const struct block *block, | |
609 | const domain_enum domain) | |
610 | { | |
d12307c1 | 611 | struct block_symbol sym; |
f953163f DE |
612 | |
613 | while (block != NULL) | |
614 | { | |
615 | sym = cp_lookup_symbol_via_imports (scope, name, block, domain, 0, 0, 1); | |
d12307c1 | 616 | if (sym.symbol) |
f953163f DE |
617 | return sym; |
618 | ||
619 | block = BLOCK_SUPERBLOCK (block); | |
620 | } | |
621 | ||
6640a367 | 622 | return {}; |
f953163f DE |
623 | } |
624 | ||
791244be DE |
625 | /* Searches for NAME in the current namespace, and by applying |
626 | relevant import statements belonging to BLOCK and its parents. | |
627 | SCOPE is the namespace scope of the context in which the search is | |
628 | being evaluated. */ | |
8540c487 | 629 | |
d12307c1 | 630 | struct block_symbol |
8540c487 SW |
631 | cp_lookup_symbol_namespace (const char *scope, |
632 | const char *name, | |
8540c487 | 633 | const struct block *block, |
13387711 | 634 | const domain_enum domain) |
8540c487 | 635 | { |
d12307c1 | 636 | struct block_symbol sym; |
cc485e62 DE |
637 | |
638 | if (symbol_lookup_debug) | |
639 | { | |
640 | fprintf_unfiltered (gdb_stdlog, | |
641 | "cp_lookup_symbol_namespace (%s, %s, %s, %s)\n", | |
642 | scope, name, host_address_to_string (block), | |
643 | domain_name (domain)); | |
644 | } | |
645 | ||
13387711 | 646 | /* First, try to find the symbol in the given namespace. */ |
f953163f | 647 | sym = cp_lookup_symbol_in_namespace (scope, name, block, domain, 1); |
8540c487 | 648 | |
f953163f | 649 | /* Search for name in namespaces imported to this and parent blocks. */ |
d12307c1 | 650 | if (sym.symbol == NULL) |
f953163f | 651 | sym = cp_lookup_symbol_via_all_imports (scope, name, block, domain); |
8540c487 | 652 | |
cc485e62 DE |
653 | if (symbol_lookup_debug) |
654 | { | |
655 | fprintf_unfiltered (gdb_stdlog, | |
f953163f | 656 | "cp_lookup_symbol_namespace (...) = %s\n", |
d12307c1 PMR |
657 | sym.symbol != NULL |
658 | ? host_address_to_string (sym.symbol) : "NULL"); | |
cc485e62 | 659 | } |
f953163f | 660 | return sym; |
1fcb5155 DC |
661 | } |
662 | ||
663 | /* Lookup NAME at namespace scope (or, in C terms, in static and | |
664 | global variables). SCOPE is the namespace that the current | |
665 | function is defined within; only consider namespaces whose length | |
666 | is at least SCOPE_LEN. Other arguments are as in | |
667 | cp_lookup_symbol_nonlocal. | |
668 | ||
669 | For example, if we're within a function A::B::f and looking for a | |
3882f37a | 670 | symbol x, this will get called with NAME = "x", SCOPE = "A::B", and |
1fcb5155 DC |
671 | SCOPE_LEN = 0. It then calls itself with NAME and SCOPE the same, |
672 | but with SCOPE_LEN = 1. And then it calls itself with NAME and | |
673 | SCOPE the same, but with SCOPE_LEN = 4. This third call looks for | |
674 | "A::B::x"; if it doesn't find it, then the second call looks for | |
675 | "A::x", and if that call fails, then the first call looks for | |
676 | "x". */ | |
677 | ||
d12307c1 | 678 | static struct block_symbol |
1994afbf DE |
679 | lookup_namespace_scope (const struct language_defn *langdef, |
680 | const char *name, | |
1fcb5155 DC |
681 | const struct block *block, |
682 | const domain_enum domain, | |
1fcb5155 DC |
683 | const char *scope, |
684 | int scope_len) | |
685 | { | |
fe978cb0 | 686 | char *the_namespace; |
1fcb5155 DC |
687 | |
688 | if (scope[scope_len] != '\0') | |
689 | { | |
690 | /* Recursively search for names in child namespaces first. */ | |
691 | ||
d12307c1 | 692 | struct block_symbol sym; |
1fcb5155 DC |
693 | int new_scope_len = scope_len; |
694 | ||
695 | /* If the current scope is followed by "::", skip past that. */ | |
696 | if (new_scope_len != 0) | |
697 | { | |
698 | gdb_assert (scope[new_scope_len] == ':'); | |
699 | new_scope_len += 2; | |
700 | } | |
701 | new_scope_len += cp_find_first_component (scope + new_scope_len); | |
1994afbf | 702 | sym = lookup_namespace_scope (langdef, name, block, domain, |
aff410f1 | 703 | scope, new_scope_len); |
d12307c1 | 704 | if (sym.symbol != NULL) |
1fcb5155 DC |
705 | return sym; |
706 | } | |
707 | ||
708 | /* Okay, we didn't find a match in our children, so look for the | |
1994afbf DE |
709 | name in the current namespace. |
710 | ||
711 | If we there is no scope and we know we have a bare symbol, then short | |
712 | circuit everything and call cp_lookup_bare_symbol directly. | |
713 | This isn't an optimization, rather it allows us to pass LANGDEF which | |
714 | is needed for primitive type lookup. The test doesn't have to be | |
715 | perfect: if NAME is a bare symbol that our test doesn't catch (e.g., a | |
716 | template symbol with "::" in the argument list) then | |
717 | cp_lookup_symbol_in_namespace will catch it. */ | |
718 | ||
719 | if (scope_len == 0 && strchr (name, ':') == NULL) | |
720 | return cp_lookup_bare_symbol (langdef, name, block, domain, 1); | |
1fcb5155 | 721 | |
224c3ddb | 722 | the_namespace = (char *) alloca (scope_len + 1); |
fe978cb0 PA |
723 | strncpy (the_namespace, scope, scope_len); |
724 | the_namespace[scope_len] = '\0'; | |
725 | return cp_lookup_symbol_in_namespace (the_namespace, name, | |
8dea366b | 726 | block, domain, 1); |
1fcb5155 DC |
727 | } |
728 | ||
56286edf DE |
729 | /* The C++-specific version of name lookup for static and global |
730 | names. This makes sure that names get looked for in all namespaces | |
731 | that are in scope. NAME is the natural name of the symbol that | |
732 | we're looking for, BLOCK is the block that we're searching within, | |
733 | DOMAIN says what kind of symbols we're looking for. */ | |
734 | ||
d12307c1 | 735 | struct block_symbol |
f606139a DE |
736 | cp_lookup_symbol_nonlocal (const struct language_defn *langdef, |
737 | const char *name, | |
56286edf DE |
738 | const struct block *block, |
739 | const domain_enum domain) | |
740 | { | |
d12307c1 | 741 | struct block_symbol sym; |
56286edf DE |
742 | const char *scope = block_scope (block); |
743 | ||
cc485e62 DE |
744 | if (symbol_lookup_debug) |
745 | { | |
746 | fprintf_unfiltered (gdb_stdlog, | |
747 | "cp_lookup_symbol_non_local" | |
748 | " (%s, %s (scope %s), %s)\n", | |
749 | name, host_address_to_string (block), scope, | |
750 | domain_name (domain)); | |
751 | } | |
752 | ||
f953163f DE |
753 | /* First, try to find the symbol in the given namespace, and all |
754 | containing namespaces. */ | |
1994afbf | 755 | sym = lookup_namespace_scope (langdef, name, block, domain, scope, 0); |
56286edf | 756 | |
f953163f | 757 | /* Search for name in namespaces imported to this and parent blocks. */ |
d12307c1 | 758 | if (sym.symbol == NULL) |
f953163f DE |
759 | sym = cp_lookup_symbol_via_all_imports (scope, name, block, domain); |
760 | ||
cc485e62 DE |
761 | if (symbol_lookup_debug) |
762 | { | |
763 | fprintf_unfiltered (gdb_stdlog, | |
764 | "cp_lookup_symbol_nonlocal (...) = %s\n", | |
d12307c1 PMR |
765 | (sym.symbol != NULL |
766 | ? host_address_to_string (sym.symbol) | |
767 | : "NULL")); | |
cc485e62 DE |
768 | } |
769 | return sym; | |
56286edf DE |
770 | } |
771 | ||
f7e3ecae KS |
772 | /* Search through the base classes of PARENT_TYPE for a base class |
773 | named NAME and return its type. If not found, return NULL. */ | |
774 | ||
775 | struct type * | |
a07e3e18 | 776 | cp_find_type_baseclass_by_name (struct type *parent_type, const char *name) |
f7e3ecae KS |
777 | { |
778 | int i; | |
779 | ||
f168693b | 780 | parent_type = check_typedef (parent_type); |
f7e3ecae KS |
781 | for (i = 0; i < TYPE_N_BASECLASSES (parent_type); ++i) |
782 | { | |
783 | struct type *type = check_typedef (TYPE_BASECLASS (parent_type, i)); | |
784 | const char *base_name = TYPE_BASECLASS_NAME (parent_type, i); | |
785 | ||
786 | if (base_name == NULL) | |
787 | continue; | |
788 | ||
789 | if (streq (base_name, name)) | |
790 | return type; | |
791 | ||
a07e3e18 | 792 | type = cp_find_type_baseclass_by_name (type, name); |
f7e3ecae KS |
793 | if (type != NULL) |
794 | return type; | |
795 | } | |
796 | ||
797 | return NULL; | |
798 | } | |
799 | ||
8dea366b KS |
800 | /* Search through the base classes of PARENT_TYPE for a symbol named |
801 | NAME in block BLOCK. */ | |
802 | ||
d12307c1 | 803 | static struct block_symbol |
8dea366b | 804 | find_symbol_in_baseclass (struct type *parent_type, const char *name, |
4dcabcc2 DE |
805 | const struct block *block, const domain_enum domain, |
806 | int is_in_anonymous) | |
8dea366b KS |
807 | { |
808 | int i; | |
6640a367 | 809 | struct block_symbol sym = {}; |
791244be | 810 | |
8dea366b KS |
811 | for (i = 0; i < TYPE_N_BASECLASSES (parent_type); ++i) |
812 | { | |
69fc87c2 | 813 | struct type *base_type = TYPE_BASECLASS (parent_type, i); |
8dea366b KS |
814 | const char *base_name = TYPE_BASECLASS_NAME (parent_type, i); |
815 | ||
816 | if (base_name == NULL) | |
817 | continue; | |
818 | ||
05d49c37 | 819 | std::string concatenated_name = std::string (base_name) + "::" + name; |
8dea366b | 820 | |
05d49c37 TT |
821 | sym = cp_lookup_nested_symbol_1 (base_type, name, |
822 | concatenated_name.c_str (), | |
4dcabcc2 | 823 | block, domain, 1, is_in_anonymous); |
d12307c1 | 824 | if (sym.symbol != NULL) |
69fc87c2 | 825 | break; |
8dea366b KS |
826 | } |
827 | ||
0c2e6019 | 828 | return sym; |
5c4e30ca DC |
829 | } |
830 | ||
4dcabcc2 DE |
831 | /* Helper function to look up NESTED_NAME in CONTAINER_TYPE and in DOMAIN |
832 | and within the context of BLOCK. | |
d5ff0482 | 833 | NESTED_NAME may have scope ("::"). |
6f27419a DE |
834 | CONTAINER_TYPE needn't have been "check_typedef'd" yet. |
835 | CONCATENATED_NAME is the fully scoped spelling of NESTED_NAME, it is | |
836 | passed as an argument so that callers can control how space for it is | |
837 | allocated. | |
838 | If BASIC_LOOKUP is non-zero then perform a basic lookup of | |
96553a0c DE |
839 | CONCATENATED_NAME. See cp_basic_lookup_symbol for details. |
840 | If IS_IN_ANONYMOUS is non-zero then CONCATENATED_NAME is in an anonymous | |
841 | namespace. */ | |
6f27419a | 842 | |
d12307c1 | 843 | static struct block_symbol |
6f27419a DE |
844 | cp_lookup_nested_symbol_1 (struct type *container_type, |
845 | const char *nested_name, | |
846 | const char *concatenated_name, | |
847 | const struct block *block, | |
4dcabcc2 | 848 | const domain_enum domain, |
96553a0c | 849 | int basic_lookup, int is_in_anonymous) |
6f27419a | 850 | { |
d12307c1 | 851 | struct block_symbol sym; |
6f27419a DE |
852 | |
853 | /* NOTE: carlton/2003-11-10: We don't treat C++ class members | |
854 | of classes like, say, data or function members. Instead, | |
855 | they're just represented by symbols whose names are | |
856 | qualified by the name of the surrounding class. This is | |
857 | just like members of namespaces; in particular, | |
858 | cp_basic_lookup_symbol works when looking them up. */ | |
859 | ||
860 | if (basic_lookup) | |
861 | { | |
4dcabcc2 | 862 | sym = cp_basic_lookup_symbol (concatenated_name, block, domain, |
6f27419a | 863 | is_in_anonymous); |
d12307c1 | 864 | if (sym.symbol != NULL) |
6f27419a DE |
865 | return sym; |
866 | } | |
867 | ||
868 | /* Now search all static file-level symbols. We have to do this for things | |
869 | like typedefs in the class. We do not try to guess any imported | |
870 | namespace as even the fully specified namespace search is already not | |
871 | C++ compliant and more assumptions could make it too magic. */ | |
872 | ||
873 | /* First search in this symtab, what we want is possibly there. */ | |
4dcabcc2 | 874 | sym = lookup_symbol_in_static_block (concatenated_name, block, domain); |
d12307c1 | 875 | if (sym.symbol != NULL) |
6f27419a DE |
876 | return sym; |
877 | ||
878 | /* Nope. We now have to search all static blocks in all objfiles, | |
879 | even if block != NULL, because there's no guarantees as to which | |
96553a0c DE |
880 | symtab the symbol we want is in. Except for symbols defined in |
881 | anonymous namespaces should be treated as local to a single file, | |
882 | which we just searched. */ | |
883 | if (!is_in_anonymous) | |
884 | { | |
4dcabcc2 | 885 | sym = lookup_static_symbol (concatenated_name, domain); |
d12307c1 | 886 | if (sym.symbol != NULL) |
96553a0c DE |
887 | return sym; |
888 | } | |
6f27419a DE |
889 | |
890 | /* If this is a class with baseclasses, search them next. */ | |
f168693b | 891 | container_type = check_typedef (container_type); |
6f27419a DE |
892 | if (TYPE_N_BASECLASSES (container_type) > 0) |
893 | { | |
96553a0c | 894 | sym = find_symbol_in_baseclass (container_type, nested_name, block, |
4dcabcc2 | 895 | domain, is_in_anonymous); |
d12307c1 | 896 | if (sym.symbol != NULL) |
6f27419a DE |
897 | return sym; |
898 | } | |
899 | ||
6640a367 | 900 | return {}; |
6f27419a DE |
901 | } |
902 | ||
50af5481 | 903 | /* Look up a symbol named NESTED_NAME that is nested inside the C++ |
79c2c32d | 904 | class or namespace given by PARENT_TYPE, from within the context |
4dcabcc2 DE |
905 | given by BLOCK, and in DOMAIN. |
906 | Return NULL if there is no such nested symbol. */ | |
79c2c32d | 907 | |
d12307c1 | 908 | struct block_symbol |
50af5481 JK |
909 | cp_lookup_nested_symbol (struct type *parent_type, |
910 | const char *nested_name, | |
4dcabcc2 DE |
911 | const struct block *block, |
912 | const domain_enum domain) | |
79c2c32d | 913 | { |
a737d952 | 914 | /* type_name_or_error provides better error reporting using the |
d8228535 JK |
915 | original type. */ |
916 | struct type *saved_parent_type = parent_type; | |
917 | ||
f168693b | 918 | parent_type = check_typedef (parent_type); |
d8228535 | 919 | |
cc485e62 DE |
920 | if (symbol_lookup_debug) |
921 | { | |
a737d952 | 922 | const char *type_name = TYPE_NAME (saved_parent_type); |
cc485e62 DE |
923 | |
924 | fprintf_unfiltered (gdb_stdlog, | |
4dcabcc2 | 925 | "cp_lookup_nested_symbol (%s, %s, %s, %s)\n", |
cc485e62 | 926 | type_name != NULL ? type_name : "unnamed", |
4dcabcc2 DE |
927 | nested_name, host_address_to_string (block), |
928 | domain_name (domain)); | |
cc485e62 DE |
929 | } |
930 | ||
79c2c32d DC |
931 | switch (TYPE_CODE (parent_type)) |
932 | { | |
63d06c5c | 933 | case TYPE_CODE_STRUCT: |
79c2c32d | 934 | case TYPE_CODE_NAMESPACE: |
48e32051 | 935 | case TYPE_CODE_UNION: |
3d567982 | 936 | case TYPE_CODE_ENUM: |
530e8392 KB |
937 | /* NOTE: Handle modules here as well, because Fortran is re-using the C++ |
938 | specific code to lookup nested symbols in modules, by calling the | |
939 | function pointer la_lookup_symbol_nonlocal, which ends up here. */ | |
940 | case TYPE_CODE_MODULE: | |
79c2c32d | 941 | { |
08850b56 | 942 | int size; |
a737d952 | 943 | const char *parent_name = type_name_or_error (saved_parent_type); |
d12307c1 | 944 | struct block_symbol sym; |
41f62f39 | 945 | char *concatenated_name; |
96553a0c | 946 | int is_in_anonymous; |
c5504eaf | 947 | |
08850b56 | 948 | size = strlen (parent_name) + 2 + strlen (nested_name) + 1; |
224c3ddb | 949 | concatenated_name = (char *) alloca (size); |
08850b56 | 950 | xsnprintf (concatenated_name, size, "%s::%s", |
6f27419a | 951 | parent_name, nested_name); |
96553a0c | 952 | is_in_anonymous = cp_is_in_anonymous (concatenated_name); |
6f27419a DE |
953 | |
954 | sym = cp_lookup_nested_symbol_1 (parent_type, nested_name, | |
4dcabcc2 DE |
955 | concatenated_name, block, domain, |
956 | 1, is_in_anonymous); | |
41f62f39 | 957 | |
cc485e62 DE |
958 | if (symbol_lookup_debug) |
959 | { | |
960 | fprintf_unfiltered (gdb_stdlog, | |
961 | "cp_lookup_nested_symbol (...) = %s\n", | |
d12307c1 PMR |
962 | (sym.symbol != NULL |
963 | ? host_address_to_string (sym.symbol) | |
964 | : "NULL")); | |
cc485e62 DE |
965 | } |
966 | return sym; | |
79c2c32d | 967 | } |
bb869963 SDJ |
968 | |
969 | case TYPE_CODE_FUNC: | |
970 | case TYPE_CODE_METHOD: | |
cc485e62 DE |
971 | if (symbol_lookup_debug) |
972 | { | |
973 | fprintf_unfiltered (gdb_stdlog, | |
974 | "cp_lookup_nested_symbol (...) = NULL" | |
975 | " (func/method)\n"); | |
976 | } | |
6640a367 | 977 | return {}; |
bb869963 | 978 | |
79c2c32d DC |
979 | default: |
980 | internal_error (__FILE__, __LINE__, | |
50af5481 | 981 | _("cp_lookup_nested_symbol called " |
3e43a32a | 982 | "on a non-aggregate type.")); |
79c2c32d DC |
983 | } |
984 | } | |
985 | ||
b368761e DC |
986 | /* The C++-version of lookup_transparent_type. */ |
987 | ||
988 | /* FIXME: carlton/2004-01-16: The problem that this is trying to | |
989 | address is that, unfortunately, sometimes NAME is wrong: it may not | |
990 | include the name of namespaces enclosing the type in question. | |
b021a221 | 991 | lookup_transparent_type gets called when the type in question |
b368761e DC |
992 | is a declaration, and we're trying to find its definition; but, for |
993 | declarations, our type name deduction mechanism doesn't work. | |
994 | There's nothing we can do to fix this in general, I think, in the | |
995 | absence of debug information about namespaces (I've filed PR | |
996 | gdb/1511 about this); until such debug information becomes more | |
997 | prevalent, one heuristic which sometimes looks is to search for the | |
998 | definition in namespaces containing the current namespace. | |
999 | ||
1000 | We should delete this functions once the appropriate debug | |
1001 | information becomes more widespread. (GCC 3.4 will be the first | |
1002 | released version of GCC with such information.) */ | |
1003 | ||
1004 | struct type * | |
1005 | cp_lookup_transparent_type (const char *name) | |
1006 | { | |
1007 | /* First, try the honest way of looking up the definition. */ | |
1008 | struct type *t = basic_lookup_transparent_type (name); | |
1009 | const char *scope; | |
1010 | ||
1011 | if (t != NULL) | |
1012 | return t; | |
1013 | ||
1014 | /* If that doesn't work and we're within a namespace, look there | |
1015 | instead. */ | |
1016 | scope = block_scope (get_selected_block (0)); | |
1017 | ||
1018 | if (scope[0] == '\0') | |
1019 | return NULL; | |
1020 | ||
1021 | return cp_lookup_transparent_type_loop (name, scope, 0); | |
1022 | } | |
1023 | ||
b021a221 MS |
1024 | /* Lookup the type definition associated to NAME in namespaces/classes |
1025 | containing SCOPE whose name is strictly longer than LENGTH. LENGTH | |
1026 | must be the index of the start of a component of SCOPE. */ | |
b368761e DC |
1027 | |
1028 | static struct type * | |
aff410f1 MS |
1029 | cp_lookup_transparent_type_loop (const char *name, |
1030 | const char *scope, | |
b368761e DC |
1031 | int length) |
1032 | { | |
1198ecbe | 1033 | int scope_length = length + cp_find_first_component (scope + length); |
b368761e DC |
1034 | char *full_name; |
1035 | ||
1036 | /* If the current scope is followed by "::", look in the next | |
1037 | component. */ | |
1038 | if (scope[scope_length] == ':') | |
1039 | { | |
1040 | struct type *retval | |
aff410f1 MS |
1041 | = cp_lookup_transparent_type_loop (name, scope, |
1042 | scope_length + 2); | |
c5504eaf | 1043 | |
b368761e DC |
1044 | if (retval != NULL) |
1045 | return retval; | |
1046 | } | |
1047 | ||
224c3ddb | 1048 | full_name = (char *) alloca (scope_length + 2 + strlen (name) + 1); |
b368761e | 1049 | strncpy (full_name, scope, scope_length); |
29f9a567 | 1050 | memcpy (full_name + scope_length, "::", 2); |
b368761e DC |
1051 | strcpy (full_name + scope_length + 2, name); |
1052 | ||
1053 | return basic_lookup_transparent_type (full_name); | |
1054 | } | |
1055 | ||
0c2e6019 TT |
1056 | /* This used to do something but was removed when it became |
1057 | obsolete. */ | |
5c4e30ca DC |
1058 | |
1059 | static void | |
32a7bf17 | 1060 | maintenance_cplus_namespace (const char *args, int from_tty) |
5c4e30ca | 1061 | { |
0c2e6019 | 1062 | printf_unfiltered (_("The `maint namespace' command was removed.\n")); |
5c4e30ca DC |
1063 | } |
1064 | ||
1065 | void | |
1066 | _initialize_cp_namespace (void) | |
1067 | { | |
0c2e6019 TT |
1068 | struct cmd_list_element *cmd; |
1069 | ||
1070 | cmd = add_cmd ("namespace", class_maintenance, | |
1071 | maintenance_cplus_namespace, | |
1072 | _("Deprecated placeholder for removed functionality."), | |
1073 | &maint_cplus_cmd_list); | |
1074 | deprecate_cmd (cmd, NULL); | |
1fcb5155 | 1075 | } |