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1 | /* Declarations for -*- C++ -*- name lookup routines. | |
2 | Copyright (C) 2003-2024 Free Software Foundation, Inc. | |
3 | Contributed by Gabriel Dos Reis <gdr@integrable-solutions.net> | |
4 | ||
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GCC is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GCC; see the file COPYING3. If not see | |
19 | <http://www.gnu.org/licenses/>. */ | |
20 | ||
21 | #ifndef GCC_CP_NAME_LOOKUP_H | |
22 | #define GCC_CP_NAME_LOOKUP_H | |
23 | ||
24 | #include "c-family/c-common.h" | |
25 | ||
26 | \f | |
27 | /* The datatype used to implement C++ scope. */ | |
28 | struct cp_binding_level; | |
29 | ||
30 | /* Nonzero if this binding is for a local scope, as opposed to a class | |
31 | or namespace scope. */ | |
32 | #define LOCAL_BINDING_P(NODE) ((NODE)->is_local) | |
33 | ||
34 | /* True if NODE->value is from a base class of the class which is | |
35 | currently being defined. */ | |
36 | #define INHERITED_VALUE_BINDING_P(NODE) ((NODE)->value_is_inherited) | |
37 | ||
38 | /* The IMPLICIT_TYPEDEF is hidden from ordinary name lookup (it was | |
39 | injected via a local class's friend decl). The typdef may be in the | |
40 | VALUE or the TYPE slot. We do not get the situation where the | |
41 | value and type slots are both filled and both hidden. */ | |
42 | #define HIDDEN_TYPE_BINDING_P(NODE) ((NODE)->type_is_hidden) | |
43 | ||
44 | /* Datatype that represents binding established by a declaration between | |
45 | a name and a C++ entity. */ | |
46 | struct GTY(()) cxx_binding { | |
47 | /* Link to chain together various bindings for this name. */ | |
48 | cxx_binding *previous; | |
49 | /* The non-type entity this name is bound to. */ | |
50 | tree value; | |
51 | /* The type entity this name is bound to. */ | |
52 | tree type; | |
53 | /* The scope at which this binding was made. */ | |
54 | cp_binding_level *scope; | |
55 | ||
56 | bool value_is_inherited : 1; | |
57 | bool is_local : 1; | |
58 | bool type_is_hidden : 1; | |
59 | }; | |
60 | ||
61 | /* Datatype used to temporarily save C++ bindings (for implicit | |
62 | instantiations purposes and like). Implemented in decl.cc. */ | |
63 | struct GTY(()) cxx_saved_binding { | |
64 | /* The name of the current binding. */ | |
65 | tree identifier; | |
66 | /* The binding we're saving. */ | |
67 | cxx_binding *binding; | |
68 | tree real_type_value; | |
69 | }; | |
70 | ||
71 | /* To support lazy module loading, we squirrel away a section number | |
72 | (and a couple of flags) in the binding slot of unloaded bindings. | |
73 | We rely on pointers being aligned and setting the bottom bit to | |
74 | mark a lazy value. GTY doesn't like an array of union, so we have | |
75 | a containing struct. */ | |
76 | ||
77 | struct GTY(()) binding_slot { | |
78 | union GTY((desc ("%1.is_lazy ()"))) binding_slot_lazy { | |
79 | tree GTY((tag ("false"))) binding; | |
80 | } u; | |
81 | ||
82 | operator tree & () | |
83 | { | |
84 | gcc_checking_assert (!is_lazy ()); | |
85 | return u.binding; | |
86 | } | |
87 | binding_slot &operator= (tree t) | |
88 | { | |
89 | u.binding = t; | |
90 | return *this; | |
91 | } | |
92 | bool is_lazy () const | |
93 | { | |
94 | return bool (uintptr_t (u.binding) & 1); | |
95 | } | |
96 | void set_lazy (unsigned snum) | |
97 | { | |
98 | gcc_checking_assert (!u.binding); | |
99 | u.binding = tree (uintptr_t ((snum << 1) | 1)); | |
100 | } | |
101 | void or_lazy (unsigned snum) | |
102 | { | |
103 | gcc_checking_assert (is_lazy ()); | |
104 | u.binding = tree (uintptr_t (u.binding) | (snum << 1)); | |
105 | } | |
106 | unsigned get_lazy () const | |
107 | { | |
108 | gcc_checking_assert (is_lazy ()); | |
109 | return unsigned (uintptr_t (u.binding) >> 1); | |
110 | } | |
111 | }; | |
112 | ||
113 | /* Bindings for modules are held in a sparse array. There is always a | |
114 | current TU slot, others are allocated as needed. By construction | |
115 | of the importing mechanism we only ever need to append to the | |
116 | array. Rather than have straight index/slot tuples, we bunch them | |
117 | up for greater packing. | |
118 | ||
119 | The cluster representation packs well on a 64-bit system. */ | |
120 | ||
121 | #define BINDING_VECTOR_SLOTS_PER_CLUSTER 2 | |
122 | struct binding_index { | |
123 | unsigned short base; | |
124 | unsigned short span; | |
125 | }; | |
126 | ||
127 | struct GTY(()) binding_cluster | |
128 | { | |
129 | binding_index GTY((skip)) indices[BINDING_VECTOR_SLOTS_PER_CLUSTER]; | |
130 | binding_slot slots[BINDING_VECTOR_SLOTS_PER_CLUSTER]; | |
131 | }; | |
132 | ||
133 | /* These two fields overlay lang flags. So don't use those. */ | |
134 | #define BINDING_VECTOR_ALLOC_CLUSTERS(NODE) \ | |
135 | (BINDING_VECTOR_CHECK (NODE)->base.u.dependence_info.clique) | |
136 | #define BINDING_VECTOR_NUM_CLUSTERS(NODE) \ | |
137 | (BINDING_VECTOR_CHECK (NODE)->base.u.dependence_info.base) | |
138 | #define BINDING_VECTOR_CLUSTER_BASE(NODE) \ | |
139 | (((tree_binding_vec *)BINDING_VECTOR_CHECK (NODE))->vec) | |
140 | #define BINDING_VECTOR_CLUSTER_LAST(NODE) \ | |
141 | (&BINDING_VECTOR_CLUSTER (NODE, BINDING_VECTOR_NUM_CLUSTERS (NODE) - 1)) | |
142 | #define BINDING_VECTOR_CLUSTER(NODE,IX) \ | |
143 | (((tree_binding_vec *)BINDING_VECTOR_CHECK (NODE))->vec[IX]) | |
144 | ||
145 | struct GTY(()) tree_binding_vec { | |
146 | struct tree_base base; | |
147 | tree name; | |
148 | binding_cluster GTY((length ("%h.base.u.dependence_info.base"))) vec[1]; | |
149 | }; | |
150 | ||
151 | /* The name of a module vector. */ | |
152 | #define BINDING_VECTOR_NAME(NODE) \ | |
153 | (((tree_binding_vec *)BINDING_VECTOR_CHECK (NODE))->name) | |
154 | ||
155 | /* tree_binding_vec does uses base.u.dependence_info.base field for | |
156 | length. It does not have lang_flag etc available! */ | |
157 | ||
158 | /* These two flags note if a module-vector contains deduplicated | |
159 | bindings (i.e. multiple declarations in different imports). */ | |
160 | /* This binding contains duplicate references to a global module | |
161 | entity. */ | |
162 | #define BINDING_VECTOR_GLOBAL_DUPS_P(NODE) \ | |
163 | (BINDING_VECTOR_CHECK (NODE)->base.static_flag) | |
164 | /* This binding contains duplicate references to a partioned module | |
165 | entity. */ | |
166 | #define BINDING_VECTOR_PARTITION_DUPS_P(NODE) \ | |
167 | (BINDING_VECTOR_CHECK (NODE)->base.volatile_flag) | |
168 | ||
169 | /* These two flags indicate the provenence of the bindings on this | |
170 | particular vector slot. We can of course determine this from slot | |
171 | number, but that's a relatively expensive lookup. This avoids | |
172 | that when iterating. */ | |
173 | /* This slot is part of the global module (a header unit). */ | |
174 | #define MODULE_BINDING_GLOBAL_P(NODE) \ | |
175 | (OVERLOAD_CHECK (NODE)->base.static_flag) | |
176 | /* This slot is part of the current module (a partition or primary). */ | |
177 | #define MODULE_BINDING_PARTITION_P(NODE) \ | |
178 | (OVERLOAD_CHECK (NODE)->base.volatile_flag) | |
179 | ||
180 | extern void set_identifier_type_value (tree, tree); | |
181 | extern void push_binding (tree, tree, cp_binding_level*); | |
182 | extern void pop_local_binding (tree, tree); | |
183 | extern void pop_bindings_and_leave_scope (void); | |
184 | extern tree constructor_name (tree); | |
185 | extern bool constructor_name_p (tree, tree); | |
186 | \f | |
187 | /* The kinds of scopes we recognize. */ | |
188 | enum scope_kind { | |
189 | sk_block = 0, /* An ordinary block scope. This enumerator must | |
190 | have the value zero because "cp_binding_level" | |
191 | is initialized by using "memset" to set the | |
192 | contents to zero, and the default scope kind | |
193 | is "sk_block". */ | |
194 | sk_cleanup, /* A scope for (pseudo-)scope for cleanup. It is | |
195 | pseudo in that it is transparent to name lookup | |
196 | activities. */ | |
197 | sk_try, /* A try-block. */ | |
198 | sk_catch, /* A catch-block. */ | |
199 | sk_for, /* The scope of the variable declared in a | |
200 | init-statement. */ | |
201 | sk_cond, /* The scope of the variable declared in the condition | |
202 | of an if or switch statement. */ | |
203 | sk_stmt_expr, /* GNU statement expression block. */ | |
204 | sk_function_parms, /* The scope containing function parameters. */ | |
205 | sk_class, /* The scope containing the members of a class. */ | |
206 | sk_scoped_enum, /* The scope containing the enumerators of a C++11 | |
207 | scoped enumeration. */ | |
208 | sk_namespace, /* The scope containing the members of a | |
209 | namespace, including the global scope. */ | |
210 | sk_template_parms, /* A scope for template parameters. */ | |
211 | sk_template_spec, /* Like sk_template_parms, but for an explicit | |
212 | specialization. Since, by definition, an | |
213 | explicit specialization is introduced by | |
214 | "template <>", this scope is always empty. */ | |
215 | sk_transaction, /* A synchronized or atomic statement. */ | |
216 | sk_omp /* An OpenMP structured block. */ | |
217 | }; | |
218 | ||
219 | struct GTY(()) cp_class_binding { | |
220 | cxx_binding *base; | |
221 | /* The bound name. */ | |
222 | tree identifier; | |
223 | }; | |
224 | ||
225 | /* For each binding contour we allocate a binding_level structure | |
226 | which records the names defined in that contour. | |
227 | Contours include: | |
228 | 0) the global one | |
229 | 1) one for each function definition, | |
230 | where internal declarations of the parameters appear. | |
231 | 2) one for each compound statement, | |
232 | to record its declarations. | |
233 | ||
234 | The current meaning of a name can be found by searching the levels | |
235 | from the current one out to the global one. | |
236 | ||
237 | Off to the side, may be the class_binding_level. This exists only | |
238 | to catch class-local declarations. It is otherwise nonexistent. | |
239 | ||
240 | Also there may be binding levels that catch cleanups that must be | |
241 | run when exceptions occur. Thus, to see whether a name is bound in | |
242 | the current scope, it is not enough to look in the | |
243 | CURRENT_BINDING_LEVEL. You should use lookup_name_current_level | |
244 | instead. */ | |
245 | ||
246 | struct GTY(()) cp_binding_level { | |
247 | /* A chain of _DECL nodes for all variables, constants, functions, | |
248 | and typedef types. These are in the reverse of the order | |
249 | supplied. There may be OVERLOADs on this list, too, but they | |
250 | are wrapped in TREE_LISTs; the TREE_VALUE is the OVERLOAD. */ | |
251 | tree names; | |
252 | ||
253 | /* Using directives. */ | |
254 | vec<tree, va_gc> *using_directives; | |
255 | ||
256 | /* For the binding level corresponding to a class, the entities | |
257 | declared in the class or its base classes. */ | |
258 | vec<cp_class_binding, va_gc> *class_shadowed; | |
259 | ||
260 | /* Similar to class_shadowed, but for IDENTIFIER_TYPE_VALUE, and | |
261 | is used for all binding levels. The TREE_PURPOSE is the name of | |
262 | the entity, the TREE_TYPE is the associated type. In addition | |
263 | the TREE_VALUE is the IDENTIFIER_TYPE_VALUE before we entered | |
264 | the class. */ | |
265 | tree type_shadowed; | |
266 | ||
267 | /* For each level (except not the global one), | |
268 | a chain of BLOCK nodes for all the levels | |
269 | that were entered and exited one level down. */ | |
270 | tree blocks; | |
271 | ||
272 | /* The entity (namespace, class, function) the scope of which this | |
273 | binding contour corresponds to. Otherwise NULL. */ | |
274 | tree this_entity; | |
275 | ||
276 | /* The binding level which this one is contained in (inherits from). */ | |
277 | cp_binding_level *level_chain; | |
278 | ||
279 | /* STATEMENT_LIST for statements in this binding contour. | |
280 | Only used at present for SK_CLEANUP temporary bindings. */ | |
281 | tree statement_list; | |
282 | ||
283 | /* Binding depth at which this level began. */ | |
284 | int binding_depth; | |
285 | ||
286 | /* The kind of scope that this object represents. However, a | |
287 | SK_TEMPLATE_SPEC scope is represented with KIND set to | |
288 | SK_TEMPLATE_PARMS and EXPLICIT_SPEC_P set to true. */ | |
289 | ENUM_BITFIELD (scope_kind) kind : 4; | |
290 | ||
291 | /* True if this scope is an SK_TEMPLATE_SPEC scope. This field is | |
292 | only valid if KIND == SK_TEMPLATE_PARMS. */ | |
293 | BOOL_BITFIELD explicit_spec_p : 1; | |
294 | ||
295 | /* True means make a BLOCK for this level regardless of all else. */ | |
296 | unsigned keep : 1; | |
297 | ||
298 | /* Nonzero if this level can safely have additional | |
299 | cleanup-needing variables added to it. */ | |
300 | unsigned more_cleanups_ok : 1; | |
301 | unsigned have_cleanups : 1; | |
302 | ||
303 | /* Transient state set if this scope is of sk_class kind | |
304 | and is in the process of defining 'this_entity'. Reset | |
305 | on leaving the class definition to allow for the scope | |
306 | to be subsequently re-used as a non-defining scope for | |
307 | 'this_entity'. */ | |
308 | unsigned defining_class_p : 1; | |
309 | ||
310 | /* True for SK_FUNCTION_PARMS of a requires-expression. */ | |
311 | unsigned requires_expression : 1; | |
312 | ||
313 | /* True for artificial blocks which should be ignored when finding | |
314 | parent scope. */ | |
315 | unsigned artificial : 1; | |
316 | ||
317 | /* 21 bits left to fill a 32-bit word. */ | |
318 | }; | |
319 | ||
320 | /* The binding level currently in effect. */ | |
321 | ||
322 | #define current_binding_level \ | |
323 | (*(cfun && cp_function_chain && cp_function_chain->bindings \ | |
324 | ? &cp_function_chain->bindings \ | |
325 | : &scope_chain->bindings)) | |
326 | ||
327 | /* The binding level of the current class, if any. */ | |
328 | ||
329 | #define class_binding_level scope_chain->class_bindings | |
330 | ||
331 | /* True if SCOPE designates the global scope binding contour. */ | |
332 | #define global_scope_p(SCOPE) \ | |
333 | ((SCOPE) == NAMESPACE_LEVEL (global_namespace)) | |
334 | ||
335 | extern cp_binding_level *leave_scope (void); | |
336 | extern bool kept_level_p (void); | |
337 | extern bool global_bindings_p (void); | |
338 | extern bool toplevel_bindings_p (void); | |
339 | extern bool namespace_bindings_p (void); | |
340 | extern bool local_bindings_p (void); | |
341 | extern bool template_parm_scope_p (void); | |
342 | extern scope_kind innermost_scope_kind (void); | |
343 | extern cp_binding_level *begin_scope (scope_kind, tree); | |
344 | extern void print_binding_stack (void); | |
345 | extern void pop_everything (void); | |
346 | extern void keep_next_level (bool); | |
347 | extern bool is_ancestor (tree ancestor, tree descendant); | |
348 | extern bool is_nested_namespace (tree parent, tree descendant, | |
349 | bool inline_only = false); | |
350 | extern tree push_scope (tree); | |
351 | extern void pop_scope (tree); | |
352 | extern tree push_inner_scope (tree); | |
353 | extern void pop_inner_scope (tree, tree); | |
354 | extern void push_binding_level (cp_binding_level *); | |
355 | \f | |
356 | extern bool handle_namespace_attrs (tree, tree); | |
357 | extern void pushlevel_class (void); | |
358 | extern void poplevel_class (void); | |
359 | ||
360 | /* What kind of scopes name lookup looks in. An enum class so we | |
361 | don't accidentally mix integers. */ | |
362 | enum class LOOK_where | |
363 | { | |
364 | BLOCK = 1 << 0, /* Consider block scopes. */ | |
365 | CLASS = 1 << 1, /* Consider class scopes. */ | |
366 | NAMESPACE = 1 << 2, /* Consider namespace scopes. */ | |
367 | ||
368 | ALL = BLOCK | CLASS | NAMESPACE, | |
369 | BLOCK_NAMESPACE = BLOCK | NAMESPACE, | |
370 | CLASS_NAMESPACE = CLASS | NAMESPACE, | |
371 | }; | |
372 | constexpr LOOK_where operator| (LOOK_where a, LOOK_where b) | |
373 | { | |
374 | return LOOK_where (unsigned (a) | unsigned (b)); | |
375 | } | |
376 | constexpr LOOK_where operator& (LOOK_where a, LOOK_where b) | |
377 | { | |
378 | return LOOK_where (unsigned (a) & unsigned (b)); | |
379 | } | |
380 | ||
381 | enum class LOOK_want | |
382 | { | |
383 | NORMAL = 0, /* Normal lookup -- non-types can hide implicit types. */ | |
384 | TYPE = 1 << 1, /* We only want TYPE_DECLS. */ | |
385 | NAMESPACE = 1 << 2, /* We only want NAMESPACE_DECLS. */ | |
386 | ||
387 | HIDDEN_FRIEND = 1 << 3, /* See hidden friends. */ | |
388 | HIDDEN_LAMBDA = 1 << 4, /* See lambda-ignored entities. */ | |
389 | ||
390 | TYPE_NAMESPACE = TYPE | NAMESPACE, /* Either NAMESPACE or TYPE. */ | |
391 | }; | |
392 | constexpr LOOK_want operator| (LOOK_want a, LOOK_want b) | |
393 | { | |
394 | return LOOK_want (unsigned (a) | unsigned (b)); | |
395 | } | |
396 | constexpr LOOK_want operator& (LOOK_want a, LOOK_want b) | |
397 | { | |
398 | return LOOK_want (unsigned (a) & unsigned (b)); | |
399 | } | |
400 | ||
401 | extern tree lookup_name (tree, LOOK_where, LOOK_want = LOOK_want::NORMAL); | |
402 | /* Also declared in c-family/c-common.h. */ | |
403 | extern tree lookup_name (tree name); | |
404 | inline tree lookup_name (tree name, LOOK_want want) | |
405 | { | |
406 | return lookup_name (name, LOOK_where::ALL, want); | |
407 | } | |
408 | ||
409 | enum class TAG_how | |
410 | { | |
411 | CURRENT_ONLY = 0, // Look and insert only in current scope | |
412 | ||
413 | GLOBAL = 1, // Unqualified lookup, innermost-non-class insertion | |
414 | ||
415 | INNERMOST_NON_CLASS = 2, // Look and insert only into | |
416 | // innermost-non-class | |
417 | ||
418 | HIDDEN_FRIEND = 3, // As INNERMOST_NON_CLASS, but hide it | |
419 | }; | |
420 | ||
421 | extern tree lookup_elaborated_type (tree, TAG_how); | |
422 | extern tree get_namespace_binding (tree ns, tree id); | |
423 | extern void set_global_binding (tree decl); | |
424 | inline tree get_global_binding (tree id) | |
425 | { | |
426 | return get_namespace_binding (NULL_TREE, id); | |
427 | } | |
428 | extern tree lookup_qualified_name (tree scope, tree name, | |
429 | LOOK_want = LOOK_want::NORMAL, | |
430 | bool = true); | |
431 | extern tree lookup_qualified_name (tree scope, const char *name, | |
432 | LOOK_want = LOOK_want::NORMAL, | |
433 | bool = true); | |
434 | extern bool pushdecl_class_level (tree); | |
435 | extern tree pushdecl_namespace_level (tree, bool hiding = false); | |
436 | extern bool push_class_level_binding (tree, tree); | |
437 | extern tree get_local_decls (); | |
438 | extern int function_parm_depth (void); | |
439 | extern tree cp_namespace_decls (tree); | |
440 | extern void set_decl_namespace (tree, tree, bool); | |
441 | extern void push_decl_namespace (tree); | |
442 | extern void pop_decl_namespace (void); | |
443 | extern void do_namespace_alias (tree, tree); | |
444 | extern tree do_class_using_decl (tree, tree); | |
445 | extern tree lookup_arg_dependent (tree, tree, vec<tree, va_gc> *); | |
446 | extern tree search_anon_aggr (tree, tree, bool = false); | |
447 | extern tree get_class_binding_direct (tree, tree, bool want_type = false); | |
448 | extern tree get_class_binding (tree, tree, bool want_type = false); | |
449 | extern tree *find_member_slot (tree klass, tree name); | |
450 | extern tree *add_member_slot (tree klass, tree name); | |
451 | extern void resort_type_member_vec (void *, void *, | |
452 | gt_pointer_operator, void *); | |
453 | extern vec<tree, va_gc> *set_class_bindings (tree, int extra = 0); | |
454 | extern void insert_late_enum_def_bindings (tree, tree); | |
455 | extern tree innermost_non_namespace_value (tree); | |
456 | extern bool decl_in_scope_p (tree); | |
457 | extern cxx_binding *outer_binding (tree, cxx_binding *, bool); | |
458 | extern void cp_emit_debug_info_for_using (tree, tree); | |
459 | ||
460 | extern void finish_nonmember_using_decl (tree scope, tree name); | |
461 | extern void finish_using_directive (tree target, tree attribs); | |
462 | void push_local_extern_decl_alias (tree decl); | |
463 | extern tree pushdecl (tree, bool hiding = false); | |
464 | extern tree pushdecl_outermost_localscope (tree); | |
465 | extern tree pushdecl_top_level (tree); | |
466 | extern tree pushdecl_top_level_and_finish (tree, tree); | |
467 | extern tree pushtag (tree, tree, TAG_how = TAG_how::CURRENT_ONLY); | |
468 | extern int push_namespace (tree, bool make_inline = false); | |
469 | extern void pop_namespace (void); | |
470 | extern void push_nested_namespace (tree); | |
471 | extern void pop_nested_namespace (tree); | |
472 | extern void push_to_top_level (void); | |
473 | extern void pop_from_top_level (void); | |
474 | extern bool maybe_push_to_top_level (tree); | |
475 | extern void maybe_pop_from_top_level (bool); | |
476 | extern void push_using_decl_bindings (tree, tree); | |
477 | ||
478 | /* Lower level interface for modules. */ | |
479 | extern tree *mergeable_namespace_slots (tree ns, tree name, bool is_attached, | |
480 | tree *mvec); | |
481 | extern void add_mergeable_namespace_entity (tree *slot, tree decl); | |
482 | extern tree lookup_class_binding (tree ctx, tree name); | |
483 | extern bool import_module_binding (tree ctx, tree name, unsigned mod, | |
484 | unsigned snum); | |
485 | extern bool set_module_binding (tree ctx, tree name, unsigned mod, | |
486 | int mod_glob_flag, | |
487 | tree value, tree type, tree visible); | |
488 | extern void add_module_namespace_decl (tree ns, tree decl); | |
489 | ||
490 | enum WMB_Flags | |
491 | { | |
492 | WMB_None = 0, | |
493 | WMB_Dups = 1 << 0, | |
494 | WMB_Export = 1 << 1, | |
495 | WMB_Using = 1 << 2, | |
496 | WMB_Hidden = 1 << 3, | |
497 | }; | |
498 | ||
499 | extern unsigned walk_module_binding (tree binding, bitmap partitions, | |
500 | bool (*)(tree decl, WMB_Flags, void *data), | |
501 | void *data); | |
502 | extern tree add_imported_namespace (tree ctx, tree name, location_t, | |
503 | unsigned module, | |
504 | bool inline_p, bool visible_p); | |
505 | extern const char *get_cxx_dialect_name (enum cxx_dialect dialect); | |
506 | ||
507 | #endif /* GCC_CP_NAME_LOOKUP_H */ |