1 /* Definitions for C++ parsing and type checking.
2 Copyright (C) 1987, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
4 Free Software Foundation, Inc.
5 Contributed by Michael Tiemann (tiemann@cygnus.com)
6
7 This file is part of GCC.
8
9 GCC is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3, or (at your option)
12 any later version.
13
14 GCC is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING3. If not see
21 <http://www.gnu.org/licenses/>. */
22
23 #ifndef GCC_CP_TREE_H
24 #define GCC_CP_TREE_H
25
26 #include "ggc.h"
27 #include "function.h"
28 #include "hashtab.h"
29 #include "vec.h"
30
31 /* In order for the format checking to accept the C++ front end
32 diagnostic framework extensions, you must include this file before
33 diagnostic-core.h, not after. We override the definition of GCC_DIAG_STYLE
34 in c-common.h. */
35 #undef GCC_DIAG_STYLE
36 #define GCC_DIAG_STYLE __gcc_cxxdiag__
37 #if defined(GCC_DIAGNOSTIC_CORE_H) || defined (GCC_C_COMMON_H)
38 #error \
39 In order for the format checking to accept the C++ front end diagnostic \
40 framework extensions, you must include this file before diagnostic-core.h and \
41 c-common.h, not after.
42 #endif
43 #include "c-family/c-common.h"
44 #include "diagnostic.h"
45
46 #include "name-lookup.h"
47
48 /* Usage of TREE_LANG_FLAG_?:
49 0: IDENTIFIER_MARKED (IDENTIFIER_NODEs)
50 NEW_EXPR_USE_GLOBAL (in NEW_EXPR).
51 DELETE_EXPR_USE_GLOBAL (in DELETE_EXPR).
52 COMPOUND_EXPR_OVERLOADED (in COMPOUND_EXPR).
53 TREE_INDIRECT_USING (in NAMESPACE_DECL).
54 CLEANUP_P (in TRY_BLOCK)
55 AGGR_INIT_VIA_CTOR_P (in AGGR_INIT_EXPR)
56 PTRMEM_OK_P (in ADDR_EXPR, OFFSET_REF, SCOPE_REF)
57 PAREN_STRING_LITERAL (in STRING_CST)
58 DECL_PRETTY_FUNCTION_P (in VAR_DECL)
59 KOENIG_LOOKUP_P (in CALL_EXPR)
60 STATEMENT_LIST_NO_SCOPE (in STATEMENT_LIST).
61 EXPR_STMT_STMT_EXPR_RESULT (in EXPR_STMT)
62 STMT_EXPR_NO_SCOPE (in STMT_EXPR)
63 BIND_EXPR_TRY_BLOCK (in BIND_EXPR)
64 TYPENAME_IS_ENUM_P (in TYPENAME_TYPE)
65 OMP_FOR_GIMPLIFYING_P (in OMP_FOR)
66 BASELINK_QUALIFIED_P (in BASELINK)
67 TARGET_EXPR_IMPLICIT_P (in TARGET_EXPR)
68 TEMPLATE_PARM_PARAMETER_PACK (in TEMPLATE_PARM_INDEX)
69 ATTR_IS_DEPENDENT (in the TREE_LIST for an attribute)
70 CONSTRUCTOR_IS_DIRECT_INIT (in CONSTRUCTOR)
71 LAMBDA_EXPR_CAPTURES_THIS_P (in LAMBDA_EXPR)
72 DECLTYPE_FOR_LAMBDA_CAPTURE (in DECLTYPE_TYPE)
73 VEC_INIT_EXPR_IS_CONSTEXPR (in VEC_INIT_EXPR)
74 DECL_OVERRIDE_P (in FUNCTION_DECL)
75 IMPLICIT_CONV_EXPR_DIRECT_INIT (in IMPLICIT_CONV_EXPR)
76 TRANSACTION_EXPR_IS_STMT (in TRANSACTION_EXPR)
77 CONVERT_EXPR_VBASE_PATH (in CONVERT_EXPR)
78 OVL_ARG_DEPENDENT (in OVERLOAD)
79 PACK_EXPANSION_LOCAL_P (in *_PACK_EXPANSION)
80 1: IDENTIFIER_VIRTUAL_P (in IDENTIFIER_NODE)
81 TI_PENDING_TEMPLATE_FLAG.
82 TEMPLATE_PARMS_FOR_INLINE.
83 DELETE_EXPR_USE_VEC (in DELETE_EXPR).
84 (TREE_CALLS_NEW) (in _EXPR or _REF) (commented-out).
85 ICS_ELLIPSIS_FLAG (in _CONV)
86 DECL_INITIALIZED_P (in VAR_DECL)
87 TYPENAME_IS_CLASS_P (in TYPENAME_TYPE)
88 STMT_IS_FULL_EXPR_P (in _STMT)
89 TARGET_EXPR_LIST_INIT_P (in TARGET_EXPR)
90 LAMBDA_EXPR_MUTABLE_P (in LAMBDA_EXPR)
91 DECL_FINAL_P (in FUNCTION_DECL)
92 QUALIFIED_NAME_IS_TEMPLATE (in SCOPE_REF)
93 2: IDENTIFIER_OPNAME_P (in IDENTIFIER_NODE)
94 ICS_THIS_FLAG (in _CONV)
95 DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (in VAR_DECL)
96 STATEMENT_LIST_TRY_BLOCK (in STATEMENT_LIST)
97 TYPENAME_IS_RESOLVING_P (in TYPE_NAME_TYPE)
98 LAMBDA_EXPR_DEDUCE_RETURN_TYPE_P (in LAMBDA_EXPR)
99 TARGET_EXPR_DIRECT_INIT_P (in TARGET_EXPR)
100 3: (TREE_REFERENCE_EXPR) (in NON_LVALUE_EXPR) (commented-out).
101 ICS_BAD_FLAG (in _CONV)
102 FN_TRY_BLOCK_P (in TRY_BLOCK)
103 IDENTIFIER_CTOR_OR_DTOR_P (in IDENTIFIER_NODE)
104 BIND_EXPR_BODY_BLOCK (in BIND_EXPR)
105 DECL_NON_TRIVIALLY_INITIALIZED_P (in VAR_DECL)
106 4: TREE_HAS_CONSTRUCTOR (in INDIRECT_REF, SAVE_EXPR, CONSTRUCTOR,
107 or FIELD_DECL).
108 IDENTIFIER_TYPENAME_P (in IDENTIFIER_NODE)
109 DECL_TINFO_P (in VAR_DECL)
110 5: C_IS_RESERVED_WORD (in IDENTIFIER_NODE)
111 DECL_VTABLE_OR_VTT_P (in VAR_DECL)
112 6: IDENTIFIER_REPO_CHOSEN (in IDENTIFIER_NODE)
113 DECL_CONSTRUCTION_VTABLE_P (in VAR_DECL)
114 TYPE_MARKED_P (in _TYPE)
115
116 Usage of TYPE_LANG_FLAG_?:
117 0: TYPE_DEPENDENT_P
118 1: TYPE_HAS_USER_CONSTRUCTOR.
119 2: unused
120 3: TYPE_FOR_JAVA.
121 4: TYPE_HAS_NONTRIVIAL_DESTRUCTOR
122 5: CLASS_TYPE_P (in RECORD_TYPE and UNION_TYPE)
123 ENUM_FIXED_UNDERLYING_TYPE_P (in ENUMERAL_TYPE)
124 6: TYPE_DEPENDENT_P_VALID
125
126 Usage of DECL_LANG_FLAG_?:
127 0: DECL_ERROR_REPORTED (in VAR_DECL).
128 DECL_TEMPLATE_PARM_P (in PARM_DECL, CONST_DECL, TYPE_DECL, or TEMPLATE_DECL)
129 DECL_LOCAL_FUNCTION_P (in FUNCTION_DECL)
130 DECL_MUTABLE_P (in FIELD_DECL)
131 DECL_DEPENDENT_P (in USING_DECL)
132 1: C_TYPEDEF_EXPLICITLY_SIGNED (in TYPE_DECL).
133 DECL_TEMPLATE_INSTANTIATED (in a VAR_DECL or a FUNCTION_DECL)
134 DECL_MEMBER_TEMPLATE_P (in TEMPLATE_DECL)
135 FUNCTION_PARAMETER_PACK_P (in PARM_DECL)
136 USING_DECL_TYPENAME_P (in USING_DECL)
137 2: DECL_THIS_EXTERN (in VAR_DECL or FUNCTION_DECL).
138 DECL_IMPLICIT_TYPEDEF_P (in a TYPE_DECL)
139 3: DECL_IN_AGGR_P.
140 4: DECL_C_BIT_FIELD (in a FIELD_DECL)
141 DECL_ANON_UNION_VAR_P (in a VAR_DECL)
142 DECL_SELF_REFERENCE_P (in a TYPE_DECL)
143 DECL_INVALID_OVERRIDER_P (in a FUNCTION_DECL)
144 5: DECL_INTERFACE_KNOWN.
145 6: DECL_THIS_STATIC (in VAR_DECL or FUNCTION_DECL).
146 DECL_FIELD_IS_BASE (in FIELD_DECL)
147 TYPE_DECL_ALIAS_P (in TYPE_DECL)
148 7: DECL_DEAD_FOR_LOCAL (in VAR_DECL).
149 DECL_THUNK_P (in a member FUNCTION_DECL)
150 DECL_NORMAL_CAPTURE_P (in FIELD_DECL)
151 8: DECL_DECLARED_CONSTEXPR_P (in VAR_DECL, FUNCTION_DECL)
152
153 Usage of language-independent fields in a language-dependent manner:
154
155 TYPE_ALIAS_SET
156 This field is used by TYPENAME_TYPEs, TEMPLATE_TYPE_PARMs, and so
157 forth as a substitute for the mark bits provided in `lang_type'.
158 At present, only the six low-order bits are used.
159
160 TYPE_LANG_SLOT_1
161 For an ENUMERAL_TYPE, this is ENUM_TEMPLATE_INFO.
162 For a FUNCTION_TYPE or METHOD_TYPE, this is TYPE_RAISES_EXCEPTIONS
163
164 BINFO_VIRTUALS
165 For a binfo, this is a TREE_LIST. There is an entry for each
166 virtual function declared either in BINFO or its direct and
167 indirect primary bases.
168
169 The BV_DELTA of each node gives the amount by which to adjust the
170 `this' pointer when calling the function. If the method is an
171 overridden version of a base class method, then it is assumed
172 that, prior to adjustment, the this pointer points to an object
173 of the base class.
174
175 The BV_VCALL_INDEX of each node, if non-NULL, gives the vtable
176 index of the vcall offset for this entry.
177
178 The BV_FN is the declaration for the virtual function itself.
179
180 If BV_LOST_PRIMARY is set, it means that this entry is for a lost
181 primary virtual base and can be left null in the vtable.
182
183 BINFO_VTABLE
184 This is an expression with POINTER_TYPE that gives the value
185 to which the vptr should be initialized. Use get_vtbl_decl_for_binfo
186 to extract the VAR_DECL for the complete vtable.
187
188 DECL_VINDEX
189 This field is NULL for a non-virtual function. For a virtual
190 function, it is eventually set to an INTEGER_CST indicating the
191 index in the vtable at which this function can be found. When
192 a virtual function is declared, but before it is known what
193 function is overridden, this field is the error_mark_node.
194
195 Temporarily, it may be set to a TREE_LIST whose TREE_VALUE is
196 the virtual function this one overrides, and whose TREE_CHAIN is
197 the old DECL_VINDEX. */
198
199 /* Language-specific tree checkers. */
200
201 #define VAR_OR_FUNCTION_DECL_CHECK(NODE) \
202 TREE_CHECK2(NODE,VAR_DECL,FUNCTION_DECL)
203
204 #define VAR_FUNCTION_OR_PARM_DECL_CHECK(NODE) \
205 TREE_CHECK3(NODE,VAR_DECL,FUNCTION_DECL,PARM_DECL)
206
207 #define VAR_TEMPL_TYPE_OR_FUNCTION_DECL_CHECK(NODE) \
208 TREE_CHECK4(NODE,VAR_DECL,FUNCTION_DECL,TYPE_DECL,TEMPLATE_DECL)
209
210 #define VAR_TEMPL_TYPE_FIELD_OR_FUNCTION_DECL_CHECK(NODE) \
211 TREE_CHECK5(NODE,VAR_DECL,FIELD_DECL,FUNCTION_DECL,TYPE_DECL,TEMPLATE_DECL)
212
213 #define BOUND_TEMPLATE_TEMPLATE_PARM_TYPE_CHECK(NODE) \
214 TREE_CHECK(NODE,BOUND_TEMPLATE_TEMPLATE_PARM)
215
216 #if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
217 #define THUNK_FUNCTION_CHECK(NODE) __extension__ \
218 ({ __typeof (NODE) const __t = (NODE); \
219 if (TREE_CODE (__t) != FUNCTION_DECL || !__t->decl_common.lang_specific \
220 || !__t->decl_common.lang_specific->u.fn.thunk_p) \
221 tree_check_failed (__t, __FILE__, __LINE__, __FUNCTION__, 0); \
222 __t; })
223 #else
224 #define THUNK_FUNCTION_CHECK(NODE) (NODE)
225 #endif
226
227 /* Language-dependent contents of an identifier. */
228
229 struct GTY(()) lang_identifier {
230 struct c_common_identifier c_common;
231 cxx_binding *namespace_bindings;
232 cxx_binding *bindings;
233 tree class_template_info;
234 tree label_value;
235 };
236
237 /* In an IDENTIFIER_NODE, nonzero if this identifier is actually a
238 keyword. C_RID_CODE (node) is then the RID_* value of the keyword,
239 and C_RID_YYCODE is the token number wanted by Yacc. */
240
241 #define C_IS_RESERVED_WORD(ID) TREE_LANG_FLAG_5 (ID)
242
243 #define LANG_IDENTIFIER_CAST(NODE) \
244 ((struct lang_identifier*)IDENTIFIER_NODE_CHECK (NODE))
245
246 struct GTY(()) template_parm_index_s {
247 struct tree_common common;
248 int index;
249 int level;
250 int orig_level;
251 tree decl;
252 };
253 typedef struct template_parm_index_s template_parm_index;
254
255 struct GTY(()) ptrmem_cst {
256 struct tree_common common;
257 tree member;
258 };
259 typedef struct ptrmem_cst * ptrmem_cst_t;
260
261 #define IDENTIFIER_GLOBAL_VALUE(NODE) \
262 namespace_binding ((NODE), global_namespace)
263 #define SET_IDENTIFIER_GLOBAL_VALUE(NODE, VAL) \
264 set_namespace_binding ((NODE), global_namespace, (VAL))
265 #define IDENTIFIER_NAMESPACE_VALUE(NODE) \
266 namespace_binding ((NODE), current_namespace)
267 #define SET_IDENTIFIER_NAMESPACE_VALUE(NODE, VAL) \
268 set_namespace_binding ((NODE), current_namespace, (VAL))
269
270 #define CLEANUP_P(NODE) TREE_LANG_FLAG_0 (TRY_BLOCK_CHECK (NODE))
271
272 #define BIND_EXPR_TRY_BLOCK(NODE) \
273 TREE_LANG_FLAG_0 (BIND_EXPR_CHECK (NODE))
274
275 /* Used to mark the block around the member initializers and cleanups. */
276 #define BIND_EXPR_BODY_BLOCK(NODE) \
277 TREE_LANG_FLAG_3 (BIND_EXPR_CHECK (NODE))
278 #define FUNCTION_NEEDS_BODY_BLOCK(NODE) \
279 (DECL_CONSTRUCTOR_P (NODE) || DECL_DESTRUCTOR_P (NODE) \
280 || LAMBDA_FUNCTION_P (NODE))
281
282 #define STATEMENT_LIST_NO_SCOPE(NODE) \
283 TREE_LANG_FLAG_0 (STATEMENT_LIST_CHECK (NODE))
284 #define STATEMENT_LIST_TRY_BLOCK(NODE) \
285 TREE_LANG_FLAG_2 (STATEMENT_LIST_CHECK (NODE))
286
287 /* Nonzero if this statement should be considered a full-expression,
288 i.e., if temporaries created during this statement should have
289 their destructors run at the end of this statement. */
290 #define STMT_IS_FULL_EXPR_P(NODE) TREE_LANG_FLAG_1 ((NODE))
291
292 /* Marks the result of a statement expression. */
293 #define EXPR_STMT_STMT_EXPR_RESULT(NODE) \
294 TREE_LANG_FLAG_0 (EXPR_STMT_CHECK (NODE))
295
296 /* Nonzero if this statement-expression does not have an associated scope. */
297 #define STMT_EXPR_NO_SCOPE(NODE) \
298 TREE_LANG_FLAG_0 (STMT_EXPR_CHECK (NODE))
299
300 /* Returns nonzero iff TYPE1 and TYPE2 are the same type, in the usual
301 sense of `same'. */
302 #define same_type_p(TYPE1, TYPE2) \
303 comptypes ((TYPE1), (TYPE2), COMPARE_STRICT)
304
305 /* Returns nonzero iff NODE is a declaration for the global function
306 `main'. */
307 #define DECL_MAIN_P(NODE) \
308 (DECL_EXTERN_C_FUNCTION_P (NODE) \
309 && DECL_NAME (NODE) != NULL_TREE \
310 && MAIN_NAME_P (DECL_NAME (NODE)) \
311 && flag_hosted)
312
313 /* The overloaded FUNCTION_DECL. */
314 #define OVL_FUNCTION(NODE) \
315 (((struct tree_overload*)OVERLOAD_CHECK (NODE))->function)
316 #define OVL_CHAIN(NODE) TREE_CHAIN (NODE)
317 /* Polymorphic access to FUNCTION and CHAIN. */
318 #define OVL_CURRENT(NODE) \
319 ((TREE_CODE (NODE) == OVERLOAD) ? OVL_FUNCTION (NODE) : (NODE))
320 #define OVL_NEXT(NODE) \
321 ((TREE_CODE (NODE) == OVERLOAD) ? TREE_CHAIN (NODE) : NULL_TREE)
322 /* If set, this was imported in a using declaration.
323 This is not to confuse with being used somewhere, which
324 is not important for this node. */
325 #define OVL_USED(NODE) TREE_USED (NODE)
326 /* If set, this OVERLOAD was created for argument-dependent lookup
327 and can be freed afterward. */
328 #define OVL_ARG_DEPENDENT(NODE) TREE_LANG_FLAG_0 (OVERLOAD_CHECK (NODE))
329
330 struct GTY(()) tree_overload {
331 struct tree_common common;
332 tree function;
333 };
334
335 /* Returns true iff NODE is a BASELINK. */
336 #define BASELINK_P(NODE) \
337 (TREE_CODE (NODE) == BASELINK)
338 /* The BINFO indicating the base from which the BASELINK_FUNCTIONS came. */
339 #define BASELINK_BINFO(NODE) \
340 (((struct tree_baselink*) BASELINK_CHECK (NODE))->binfo)
341 /* The functions referred to by the BASELINK; either a FUNCTION_DECL,
342 a TEMPLATE_DECL, an OVERLOAD, or a TEMPLATE_ID_EXPR. */
343 #define BASELINK_FUNCTIONS(NODE) \
344 (((struct tree_baselink*) BASELINK_CHECK (NODE))->functions)
345 /* The BINFO in which the search for the functions indicated by this baselink
346 began. This base is used to determine the accessibility of functions
347 selected by overload resolution. */
348 #define BASELINK_ACCESS_BINFO(NODE) \
349 (((struct tree_baselink*) BASELINK_CHECK (NODE))->access_binfo)
350 /* For a type-conversion operator, the BASELINK_OPTYPE indicates the type
351 to which the conversion should occur. This value is important if
352 the BASELINK_FUNCTIONS include a template conversion operator --
353 the BASELINK_OPTYPE can be used to determine what type the user
354 requested. */
355 #define BASELINK_OPTYPE(NODE) \
356 (TREE_CHAIN (BASELINK_CHECK (NODE)))
357 /* Nonzero if this baselink was from a qualified lookup. */
358 #define BASELINK_QUALIFIED_P(NODE) \
359 TREE_LANG_FLAG_0 (BASELINK_CHECK (NODE))
360
361 struct GTY(()) tree_baselink {
362 struct tree_common common;
363 tree binfo;
364 tree functions;
365 tree access_binfo;
366 };
367
368 /* The different kinds of ids that we encounter. */
369
370 typedef enum cp_id_kind
371 {
372 /* Not an id at all. */
373 CP_ID_KIND_NONE,
374 /* An unqualified-id that is not a template-id. */
375 CP_ID_KIND_UNQUALIFIED,
376 /* An unqualified-id that is a dependent name. */
377 CP_ID_KIND_UNQUALIFIED_DEPENDENT,
378 /* An unqualified template-id. */
379 CP_ID_KIND_TEMPLATE_ID,
380 /* A qualified-id. */
381 CP_ID_KIND_QUALIFIED
382 } cp_id_kind;
383
384
385 /* The various kinds of C++0x warnings we encounter. */
386
387 typedef enum cpp0x_warn_str
388 {
389 /* extended initializer lists */
390 CPP0X_INITIALIZER_LISTS,
391 /* explicit conversion operators */
392 CPP0X_EXPLICIT_CONVERSION,
393 /* variadic templates */
394 CPP0X_VARIADIC_TEMPLATES,
395 /* lambda expressions */
396 CPP0X_LAMBDA_EXPR,
397 /* C++0x auto */
398 CPP0X_AUTO,
399 /* scoped enums */
400 CPP0X_SCOPED_ENUMS,
401 /* defaulted and deleted functions */
402 CPP0X_DEFAULTED_DELETED,
403 /* inline namespaces */
404 CPP0X_INLINE_NAMESPACES,
405 /* override controls, override/final */
406 CPP0X_OVERRIDE_CONTROLS,
407 /* non-static data member initializers */
408 CPP0X_NSDMI,
409 /* user defined literals */
410 CPP0X_USER_DEFINED_LITERALS,
411 /* delegating constructors */
412 CPP0X_DELEGATING_CTORS
413 } cpp0x_warn_str;
414
415 /* The various kinds of operation used by composite_pointer_type. */
416
417 typedef enum composite_pointer_operation
418 {
419 /* comparison */
420 CPO_COMPARISON,
421 /* conversion */
422 CPO_CONVERSION,
423 /* conditional expression */
424 CPO_CONDITIONAL_EXPR
425 } composite_pointer_operation;
426
427 /* Possible cases of expression list used by build_x_compound_expr_from_list. */
428 typedef enum expr_list_kind {
429 ELK_INIT, /* initializer */
430 ELK_MEM_INIT, /* member initializer */
431 ELK_FUNC_CAST /* functional cast */
432 } expr_list_kind;
433
434 /* Possible cases of implicit bad rhs conversions. */
435 typedef enum impl_conv_rhs {
436 ICR_DEFAULT_ARGUMENT, /* default argument */
437 ICR_CONVERTING, /* converting */
438 ICR_INIT, /* initialization */
439 ICR_ARGPASS, /* argument passing */
440 ICR_RETURN, /* return */
441 ICR_ASSIGN /* assignment */
442 } impl_conv_rhs;
443
444 /* Possible cases of implicit or explicit bad conversions to void. */
445 typedef enum impl_conv_void {
446 ICV_CAST, /* (explicit) conversion to void */
447 ICV_SECOND_OF_COND, /* second operand of conditional expression */
448 ICV_THIRD_OF_COND, /* third operand of conditional expression */
449 ICV_RIGHT_OF_COMMA, /* right operand of comma operator */
450 ICV_LEFT_OF_COMMA, /* left operand of comma operator */
451 ICV_STATEMENT, /* statement */
452 ICV_THIRD_IN_FOR /* for increment expression */
453 } impl_conv_void;
454
455 /* Macros for access to language-specific slots in an identifier. */
456
457 #define IDENTIFIER_NAMESPACE_BINDINGS(NODE) \
458 (LANG_IDENTIFIER_CAST (NODE)->namespace_bindings)
459 #define IDENTIFIER_TEMPLATE(NODE) \
460 (LANG_IDENTIFIER_CAST (NODE)->class_template_info)
461
462 /* The IDENTIFIER_BINDING is the innermost cxx_binding for the
463 identifier. It's PREVIOUS is the next outermost binding. Each
464 VALUE field is a DECL for the associated declaration. Thus,
465 name lookup consists simply of pulling off the node at the front
466 of the list (modulo oddities for looking up the names of types,
467 and such.) You can use SCOPE field to determine the scope
468 that bound the name. */
469 #define IDENTIFIER_BINDING(NODE) \
470 (LANG_IDENTIFIER_CAST (NODE)->bindings)
471
472 /* TREE_TYPE only indicates on local and class scope the current
473 type. For namespace scope, the presence of a type in any namespace
474 is indicated with global_type_node, and the real type behind must
475 be found through lookup. */
476 #define IDENTIFIER_TYPE_VALUE(NODE) identifier_type_value (NODE)
477 #define REAL_IDENTIFIER_TYPE_VALUE(NODE) TREE_TYPE (NODE)
478 #define SET_IDENTIFIER_TYPE_VALUE(NODE,TYPE) (TREE_TYPE (NODE) = (TYPE))
479 #define IDENTIFIER_HAS_TYPE_VALUE(NODE) (IDENTIFIER_TYPE_VALUE (NODE) ? 1 : 0)
480
481 #define IDENTIFIER_LABEL_VALUE(NODE) \
482 (LANG_IDENTIFIER_CAST (NODE)->label_value)
483 #define SET_IDENTIFIER_LABEL_VALUE(NODE, VALUE) \
484 IDENTIFIER_LABEL_VALUE (NODE) = (VALUE)
485
486 /* Nonzero if this identifier is used as a virtual function name somewhere
487 (optimizes searches). */
488 #define IDENTIFIER_VIRTUAL_P(NODE) TREE_LANG_FLAG_1 (NODE)
489
490 /* Nonzero if this identifier is the prefix for a mangled C++ operator
491 name. */
492 #define IDENTIFIER_OPNAME_P(NODE) TREE_LANG_FLAG_2 (NODE)
493
494 /* Nonzero if this identifier is the name of a type-conversion
495 operator. */
496 #define IDENTIFIER_TYPENAME_P(NODE) \
497 TREE_LANG_FLAG_4 (NODE)
498
499 /* Nonzero if this identifier is the name of a constructor or
500 destructor. */
501 #define IDENTIFIER_CTOR_OR_DTOR_P(NODE) \
502 TREE_LANG_FLAG_3 (NODE)
503
504 /* True iff NAME is the DECL_ASSEMBLER_NAME for an entity with vague
505 linkage which the prelinker has assigned to this translation
506 unit. */
507 #define IDENTIFIER_REPO_CHOSEN(NAME) \
508 (TREE_LANG_FLAG_6 (NAME))
509
510 /* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is read-only. */
511 #define C_TYPE_FIELDS_READONLY(TYPE) \
512 (LANG_TYPE_CLASS_CHECK (TYPE)->fields_readonly)
513
514 /* The tokens stored in the default argument. */
515
516 #define DEFARG_TOKENS(NODE) \
517 (((struct tree_default_arg *)DEFAULT_ARG_CHECK (NODE))->tokens)
518 #define DEFARG_INSTANTIATIONS(NODE) \
519 (((struct tree_default_arg *)DEFAULT_ARG_CHECK (NODE))->instantiations)
520
521 struct GTY (()) tree_default_arg {
522 struct tree_common common;
523 struct cp_token_cache *tokens;
524 VEC(tree,gc) *instantiations;
525 };
526
527
528 #define DEFERRED_NOEXCEPT_PATTERN(NODE) \
529 (((struct tree_deferred_noexcept *)DEFERRED_NOEXCEPT_CHECK (NODE))->pattern)
530 #define DEFERRED_NOEXCEPT_ARGS(NODE) \
531 (((struct tree_deferred_noexcept *)DEFERRED_NOEXCEPT_CHECK (NODE))->args)
532 #define DEFERRED_NOEXCEPT_SPEC_P(NODE) \
533 ((NODE) && (TREE_PURPOSE (NODE)) \
534 && (TREE_CODE (TREE_PURPOSE (NODE)) == DEFERRED_NOEXCEPT \
535 || is_overloaded_fn (TREE_PURPOSE (NODE))))
536
537 struct GTY (()) tree_deferred_noexcept {
538 struct tree_base base;
539 tree pattern;
540 tree args;
541 };
542
543
544 /* The condition associated with the static assertion. This must be
545 an integral constant expression. */
546 #define STATIC_ASSERT_CONDITION(NODE) \
547 (((struct tree_static_assert *)STATIC_ASSERT_CHECK (NODE))->condition)
548
549 /* The message associated with the static assertion. This must be a
550 string constant, which will be emitted as an error message when the
551 static assert condition is false. */
552 #define STATIC_ASSERT_MESSAGE(NODE) \
553 (((struct tree_static_assert *)STATIC_ASSERT_CHECK (NODE))->message)
554
555 /* Source location information for a static assertion. */
556 #define STATIC_ASSERT_SOURCE_LOCATION(NODE) \
557 (((struct tree_static_assert *)STATIC_ASSERT_CHECK (NODE))->location)
558
559 struct GTY (()) tree_static_assert {
560 struct tree_common common;
561 tree condition;
562 tree message;
563 location_t location;
564 };
565
566 struct GTY (()) tree_argument_pack_select {
567 struct tree_common common;
568 tree argument_pack;
569 int index;
570 };
571
572 /* The different kinds of traits that we encounter. */
573
574 typedef enum cp_trait_kind
575 {
576 CPTK_BASES,
577 CPTK_DIRECT_BASES,
578 CPTK_HAS_NOTHROW_ASSIGN,
579 CPTK_HAS_NOTHROW_CONSTRUCTOR,
580 CPTK_HAS_NOTHROW_COPY,
581 CPTK_HAS_TRIVIAL_ASSIGN,
582 CPTK_HAS_TRIVIAL_CONSTRUCTOR,
583 CPTK_HAS_TRIVIAL_COPY,
584 CPTK_HAS_TRIVIAL_DESTRUCTOR,
585 CPTK_HAS_VIRTUAL_DESTRUCTOR,
586 CPTK_IS_ABSTRACT,
587 CPTK_IS_BASE_OF,
588 CPTK_IS_CLASS,
589 CPTK_IS_CONVERTIBLE_TO,
590 CPTK_IS_EMPTY,
591 CPTK_IS_ENUM,
592 CPTK_IS_FINAL,
593 CPTK_IS_LITERAL_TYPE,
594 CPTK_IS_POD,
595 CPTK_IS_POLYMORPHIC,
596 CPTK_IS_STD_LAYOUT,
597 CPTK_IS_TRIVIAL,
598 CPTK_IS_UNION,
599 CPTK_UNDERLYING_TYPE
600 } cp_trait_kind;
601
602 /* The types that we are processing. */
603 #define TRAIT_EXPR_TYPE1(NODE) \
604 (((struct tree_trait_expr *)TRAIT_EXPR_CHECK (NODE))->type1)
605
606 #define TRAIT_EXPR_TYPE2(NODE) \
607 (((struct tree_trait_expr *)TRAIT_EXPR_CHECK (NODE))->type2)
608
609 /* The specific trait that we are processing. */
610 #define TRAIT_EXPR_KIND(NODE) \
611 (((struct tree_trait_expr *)TRAIT_EXPR_CHECK (NODE))->kind)
612
613 struct GTY (()) tree_trait_expr {
614 struct tree_common common;
615 tree type1;
616 tree type2;
617 enum cp_trait_kind kind;
618 };
619
620 /* Based off of TYPE_ANONYMOUS_P. */
621 #define LAMBDA_TYPE_P(NODE) \
622 (CLASS_TYPE_P (NODE) && LAMBDANAME_P (TYPE_LINKAGE_IDENTIFIER (NODE)))
623
624 /* Test if FUNCTION_DECL is a lambda function. */
625 #define LAMBDA_FUNCTION_P(FNDECL) \
626 (DECL_OVERLOADED_OPERATOR_P (FNDECL) == CALL_EXPR \
627 && LAMBDA_TYPE_P (CP_DECL_CONTEXT (FNDECL)))
628
629 enum cp_lambda_default_capture_mode_type {
630 CPLD_NONE,
631 CPLD_COPY,
632 CPLD_REFERENCE
633 };
634
635 /* The method of default capture, if any. */
636 #define LAMBDA_EXPR_DEFAULT_CAPTURE_MODE(NODE) \
637 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->default_capture_mode)
638
639 /* The capture-list, including `this'. Each capture is stored as a FIELD_DECL
640 * so that the name, type, and field are all together, whether or not it has
641 * been added to the lambda's class type.
642 TREE_LIST:
643 TREE_PURPOSE: The FIELD_DECL for this capture.
644 TREE_VALUE: The initializer. This is part of a GNU extension. */
645 #define LAMBDA_EXPR_CAPTURE_LIST(NODE) \
646 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->capture_list)
647
648 /* During parsing of the lambda-introducer, the node in the capture-list
649 that holds the 'this' capture. During parsing of the body, the
650 capture proxy for that node. */
651 #define LAMBDA_EXPR_THIS_CAPTURE(NODE) \
652 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->this_capture)
653
654 /* Predicate tracking whether `this' is in the effective capture set. */
655 #define LAMBDA_EXPR_CAPTURES_THIS_P(NODE) \
656 LAMBDA_EXPR_THIS_CAPTURE(NODE)
657
658 /* Predicate tracking whether the lambda was declared 'mutable'. */
659 #define LAMBDA_EXPR_MUTABLE_P(NODE) \
660 TREE_LANG_FLAG_1 (LAMBDA_EXPR_CHECK (NODE))
661
662 /* True iff we should try to deduce the lambda return type from any return
663 statement. */
664 #define LAMBDA_EXPR_DEDUCE_RETURN_TYPE_P(NODE) \
665 TREE_LANG_FLAG_2 (LAMBDA_EXPR_CHECK (NODE))
666
667 /* The return type in the expression.
668 * NULL_TREE indicates that none was specified. */
669 #define LAMBDA_EXPR_RETURN_TYPE(NODE) \
670 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->return_type)
671
672 /* The source location of the lambda. */
673 #define LAMBDA_EXPR_LOCATION(NODE) \
674 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->locus)
675
676 /* The mangling scope for the lambda: FUNCTION_DECL, PARM_DECL, VAR_DECL,
677 FIELD_DECL or NULL_TREE. If this is NULL_TREE, we have no linkage. */
678 #define LAMBDA_EXPR_EXTRA_SCOPE(NODE) \
679 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->extra_scope)
680
681 /* If EXTRA_SCOPE, this is the number of the lambda within that scope. */
682 #define LAMBDA_EXPR_DISCRIMINATOR(NODE) \
683 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->discriminator)
684
685 /* During parsing of the lambda, a vector of capture proxies which need
686 to be pushed once we're done processing a nested lambda. */
687 #define LAMBDA_EXPR_PENDING_PROXIES(NODE) \
688 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->pending_proxies)
689
690 /* The closure type of the lambda. Note that the TREE_TYPE of a
691 LAMBDA_EXPR is always NULL_TREE, because we need to instantiate the
692 LAMBDA_EXPR in order to instantiate the type. */
693 #define LAMBDA_EXPR_CLOSURE(NODE) \
694 (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->closure)
695
696 struct GTY (()) tree_lambda_expr
697 {
698 struct tree_typed typed;
699 tree capture_list;
700 tree this_capture;
701 tree return_type;
702 tree extra_scope;
703 tree closure;
704 VEC(tree,gc)* pending_proxies;
705 location_t locus;
706 enum cp_lambda_default_capture_mode_type default_capture_mode;
707 int discriminator;
708 };
709
710 /* A (typedef,context,usage location) triplet.
711 It represents a typedef used through a
712 context at a given source location.
713 e.g.
714 struct foo {
715 typedef int myint;
716 };
717
718 struct bar {
719 foo::myint v; // #1<-- this location.
720 };
721
722 In bar, the triplet will be (myint, foo, #1).
723 */
724 struct GTY(()) qualified_typedef_usage_s {
725 tree typedef_decl;
726 tree context;
727 location_t locus;
728 };
729 typedef struct qualified_typedef_usage_s qualified_typedef_usage_t;
730 DEF_VEC_O (qualified_typedef_usage_t);
731 DEF_VEC_ALLOC_O (qualified_typedef_usage_t,gc);
732
733 struct GTY(()) tree_template_info {
734 struct tree_common common;
735 VEC(qualified_typedef_usage_t,gc) *typedefs_needing_access_checking;
736 };
737
738 enum cp_tree_node_structure_enum {
739 TS_CP_GENERIC,
740 TS_CP_IDENTIFIER,
741 TS_CP_TPI,
742 TS_CP_PTRMEM,
743 TS_CP_BINDING,
744 TS_CP_OVERLOAD,
745 TS_CP_BASELINK,
746 TS_CP_WRAPPER,
747 TS_CP_DEFAULT_ARG,
748 TS_CP_DEFERRED_NOEXCEPT,
749 TS_CP_STATIC_ASSERT,
750 TS_CP_ARGUMENT_PACK_SELECT,
751 TS_CP_TRAIT_EXPR,
752 TS_CP_LAMBDA_EXPR,
753 TS_CP_TEMPLATE_INFO,
754 TS_CP_USERDEF_LITERAL,
755 LAST_TS_CP_ENUM
756 };
757
758 /* The resulting tree type. */
759 union GTY((desc ("cp_tree_node_structure (&%h)"),
760 chain_next ("(union lang_tree_node *) c_tree_chain_next (&%h.generic)"))) lang_tree_node {
761 union tree_node GTY ((tag ("TS_CP_GENERIC"),
762 desc ("tree_node_structure (&%h)"))) generic;
763 struct template_parm_index_s GTY ((tag ("TS_CP_TPI"))) tpi;
764 struct ptrmem_cst GTY ((tag ("TS_CP_PTRMEM"))) ptrmem;
765 struct tree_overload GTY ((tag ("TS_CP_OVERLOAD"))) overload;
766 struct tree_baselink GTY ((tag ("TS_CP_BASELINK"))) baselink;
767 struct tree_default_arg GTY ((tag ("TS_CP_DEFAULT_ARG"))) default_arg;
768 struct tree_deferred_noexcept GTY ((tag ("TS_CP_DEFERRED_NOEXCEPT"))) deferred_noexcept;
769 struct lang_identifier GTY ((tag ("TS_CP_IDENTIFIER"))) identifier;
770 struct tree_static_assert GTY ((tag ("TS_CP_STATIC_ASSERT")))
771 static_assertion;
772 struct tree_argument_pack_select GTY ((tag ("TS_CP_ARGUMENT_PACK_SELECT")))
773 argument_pack_select;
774 struct tree_trait_expr GTY ((tag ("TS_CP_TRAIT_EXPR")))
775 trait_expression;
776 struct tree_lambda_expr GTY ((tag ("TS_CP_LAMBDA_EXPR")))
777 lambda_expression;
778 struct tree_template_info GTY ((tag ("TS_CP_TEMPLATE_INFO")))
779 template_info;
780 struct tree_userdef_literal GTY ((tag ("TS_CP_USERDEF_LITERAL")))
781 userdef_literal;
782 };
783
784
785 enum cp_tree_index
786 {
787 CPTI_JAVA_BYTE_TYPE,
788 CPTI_JAVA_SHORT_TYPE,
789 CPTI_JAVA_INT_TYPE,
790 CPTI_JAVA_LONG_TYPE,
791 CPTI_JAVA_FLOAT_TYPE,
792 CPTI_JAVA_DOUBLE_TYPE,
793 CPTI_JAVA_CHAR_TYPE,
794 CPTI_JAVA_BOOLEAN_TYPE,
795
796 CPTI_WCHAR_DECL,
797 CPTI_VTABLE_ENTRY_TYPE,
798 CPTI_DELTA_TYPE,
799 CPTI_VTABLE_INDEX_TYPE,
800 CPTI_CLEANUP_TYPE,
801 CPTI_VTT_PARM_TYPE,
802
803 CPTI_CLASS_TYPE,
804 CPTI_UNKNOWN_TYPE,
805 CPTI_INIT_LIST_TYPE,
806 CPTI_DEPENDENT_LAMBDA_RETURN_TYPE,
807 CPTI_VTBL_TYPE,
808 CPTI_VTBL_PTR_TYPE,
809 CPTI_STD,
810 CPTI_ABI,
811 CPTI_CONST_TYPE_INFO_TYPE,
812 CPTI_TYPE_INFO_PTR_TYPE,
813 CPTI_ABORT_FNDECL,
814 CPTI_GLOBAL_DELETE_FNDECL,
815 CPTI_AGGR_TAG,
816
817 CPTI_CTOR_IDENTIFIER,
818 CPTI_COMPLETE_CTOR_IDENTIFIER,
819 CPTI_BASE_CTOR_IDENTIFIER,
820 CPTI_DTOR_IDENTIFIER,
821 CPTI_COMPLETE_DTOR_IDENTIFIER,
822 CPTI_BASE_DTOR_IDENTIFIER,
823 CPTI_DELETING_DTOR_IDENTIFIER,
824 CPTI_DELTA_IDENTIFIER,
825 CPTI_IN_CHARGE_IDENTIFIER,
826 CPTI_VTT_PARM_IDENTIFIER,
827 CPTI_NELTS_IDENTIFIER,
828 CPTI_THIS_IDENTIFIER,
829 CPTI_PFN_IDENTIFIER,
830 CPTI_VPTR_IDENTIFIER,
831 CPTI_STD_IDENTIFIER,
832
833 CPTI_LANG_NAME_C,
834 CPTI_LANG_NAME_CPLUSPLUS,
835 CPTI_LANG_NAME_JAVA,
836
837 CPTI_EMPTY_EXCEPT_SPEC,
838 CPTI_NOEXCEPT_TRUE_SPEC,
839 CPTI_NOEXCEPT_FALSE_SPEC,
840 CPTI_JCLASS,
841 CPTI_TERMINATE,
842 CPTI_CALL_UNEXPECTED,
843 CPTI_ATEXIT_FN_PTR_TYPE,
844 CPTI_ATEXIT,
845 CPTI_DSO_HANDLE,
846 CPTI_DCAST,
847
848 CPTI_KEYED_CLASSES,
849
850 CPTI_NULLPTR,
851 CPTI_NULLPTR_TYPE,
852
853 CPTI_MAX
854 };
855
856 extern GTY(()) tree cp_global_trees[CPTI_MAX];
857
858 #define java_byte_type_node cp_global_trees[CPTI_JAVA_BYTE_TYPE]
859 #define java_short_type_node cp_global_trees[CPTI_JAVA_SHORT_TYPE]
860 #define java_int_type_node cp_global_trees[CPTI_JAVA_INT_TYPE]
861 #define java_long_type_node cp_global_trees[CPTI_JAVA_LONG_TYPE]
862 #define java_float_type_node cp_global_trees[CPTI_JAVA_FLOAT_TYPE]
863 #define java_double_type_node cp_global_trees[CPTI_JAVA_DOUBLE_TYPE]
864 #define java_char_type_node cp_global_trees[CPTI_JAVA_CHAR_TYPE]
865 #define java_boolean_type_node cp_global_trees[CPTI_JAVA_BOOLEAN_TYPE]
866
867 #define wchar_decl_node cp_global_trees[CPTI_WCHAR_DECL]
868 #define vtable_entry_type cp_global_trees[CPTI_VTABLE_ENTRY_TYPE]
869 /* The type used to represent an offset by which to adjust the `this'
870 pointer in pointer-to-member types. */
871 #define delta_type_node cp_global_trees[CPTI_DELTA_TYPE]
872 /* The type used to represent an index into the vtable. */
873 #define vtable_index_type cp_global_trees[CPTI_VTABLE_INDEX_TYPE]
874
875 #define class_type_node cp_global_trees[CPTI_CLASS_TYPE]
876 #define unknown_type_node cp_global_trees[CPTI_UNKNOWN_TYPE]
877 #define init_list_type_node cp_global_trees[CPTI_INIT_LIST_TYPE]
878 #define dependent_lambda_return_type_node cp_global_trees[CPTI_DEPENDENT_LAMBDA_RETURN_TYPE]
879 #define vtbl_type_node cp_global_trees[CPTI_VTBL_TYPE]
880 #define vtbl_ptr_type_node cp_global_trees[CPTI_VTBL_PTR_TYPE]
881 #define std_node cp_global_trees[CPTI_STD]
882 #define abi_node cp_global_trees[CPTI_ABI]
883 #define const_type_info_type_node cp_global_trees[CPTI_CONST_TYPE_INFO_TYPE]
884 #define type_info_ptr_type cp_global_trees[CPTI_TYPE_INFO_PTR_TYPE]
885 #define abort_fndecl cp_global_trees[CPTI_ABORT_FNDECL]
886 #define global_delete_fndecl cp_global_trees[CPTI_GLOBAL_DELETE_FNDECL]
887 #define current_aggr cp_global_trees[CPTI_AGGR_TAG]
888 #define nullptr_node cp_global_trees[CPTI_NULLPTR]
889 #define nullptr_type_node cp_global_trees[CPTI_NULLPTR_TYPE]
890
891 /* We cache these tree nodes so as to call get_identifier less
892 frequently. */
893
894 /* The name of a constructor that takes an in-charge parameter to
895 decide whether or not to construct virtual base classes. */
896 #define ctor_identifier cp_global_trees[CPTI_CTOR_IDENTIFIER]
897 /* The name of a constructor that constructs virtual base classes. */
898 #define complete_ctor_identifier cp_global_trees[CPTI_COMPLETE_CTOR_IDENTIFIER]
899 /* The name of a constructor that does not construct virtual base classes. */
900 #define base_ctor_identifier cp_global_trees[CPTI_BASE_CTOR_IDENTIFIER]
901 /* The name of a destructor that takes an in-charge parameter to
902 decide whether or not to destroy virtual base classes and whether
903 or not to delete the object. */
904 #define dtor_identifier cp_global_trees[CPTI_DTOR_IDENTIFIER]
905 /* The name of a destructor that destroys virtual base classes. */
906 #define complete_dtor_identifier cp_global_trees[CPTI_COMPLETE_DTOR_IDENTIFIER]
907 /* The name of a destructor that does not destroy virtual base
908 classes. */
909 #define base_dtor_identifier cp_global_trees[CPTI_BASE_DTOR_IDENTIFIER]
910 /* The name of a destructor that destroys virtual base classes, and
911 then deletes the entire object. */
912 #define deleting_dtor_identifier cp_global_trees[CPTI_DELETING_DTOR_IDENTIFIER]
913 #define delta_identifier cp_global_trees[CPTI_DELTA_IDENTIFIER]
914 #define in_charge_identifier cp_global_trees[CPTI_IN_CHARGE_IDENTIFIER]
915 /* The name of the parameter that contains a pointer to the VTT to use
916 for this subobject constructor or destructor. */
917 #define vtt_parm_identifier cp_global_trees[CPTI_VTT_PARM_IDENTIFIER]
918 #define nelts_identifier cp_global_trees[CPTI_NELTS_IDENTIFIER]
919 #define this_identifier cp_global_trees[CPTI_THIS_IDENTIFIER]
920 #define pfn_identifier cp_global_trees[CPTI_PFN_IDENTIFIER]
921 #define vptr_identifier cp_global_trees[CPTI_VPTR_IDENTIFIER]
922 /* The name of the std namespace. */
923 #define std_identifier cp_global_trees[CPTI_STD_IDENTIFIER]
924 #define lang_name_c cp_global_trees[CPTI_LANG_NAME_C]
925 #define lang_name_cplusplus cp_global_trees[CPTI_LANG_NAME_CPLUSPLUS]
926 #define lang_name_java cp_global_trees[CPTI_LANG_NAME_JAVA]
927
928 /* Exception specifier used for throw(). */
929 #define empty_except_spec cp_global_trees[CPTI_EMPTY_EXCEPT_SPEC]
930 #define noexcept_true_spec cp_global_trees[CPTI_NOEXCEPT_TRUE_SPEC]
931 #define noexcept_false_spec cp_global_trees[CPTI_NOEXCEPT_FALSE_SPEC]
932
933 /* If non-NULL, a POINTER_TYPE equivalent to (java::lang::Class*). */
934 #define jclass_node cp_global_trees[CPTI_JCLASS]
935
936 /* The declaration for `std::terminate'. */
937 #define terminate_node cp_global_trees[CPTI_TERMINATE]
938
939 /* The declaration for "__cxa_call_unexpected". */
940 #define call_unexpected_node cp_global_trees[CPTI_CALL_UNEXPECTED]
941
942 /* The type of the function-pointer argument to "__cxa_atexit" (or
943 "std::atexit", if "__cxa_atexit" is not being used). */
944 #define atexit_fn_ptr_type_node cp_global_trees[CPTI_ATEXIT_FN_PTR_TYPE]
945
946 /* A pointer to `std::atexit'. */
947 #define atexit_node cp_global_trees[CPTI_ATEXIT]
948
949 /* A pointer to `__dso_handle'. */
950 #define dso_handle_node cp_global_trees[CPTI_DSO_HANDLE]
951
952 /* The declaration of the dynamic_cast runtime. */
953 #define dynamic_cast_node cp_global_trees[CPTI_DCAST]
954
955 /* The type of a destructor. */
956 #define cleanup_type cp_global_trees[CPTI_CLEANUP_TYPE]
957
958 /* The type of the vtt parameter passed to subobject constructors and
959 destructors. */
960 #define vtt_parm_type cp_global_trees[CPTI_VTT_PARM_TYPE]
961
962 /* A TREE_LIST of the dynamic classes whose vtables may have to be
963 emitted in this translation unit. */
964
965 #define keyed_classes cp_global_trees[CPTI_KEYED_CLASSES]
966
967 /* Node to indicate default access. This must be distinct from the
968 access nodes in tree.h. */
969
970 #define access_default_node null_node
971
972 /* Global state. */
973
974 struct GTY(()) saved_scope {
975 VEC(cxx_saved_binding,gc) *old_bindings;
976 tree old_namespace;
977 VEC(tree,gc) *decl_ns_list;
978 tree class_name;
979 tree class_type;
980 tree access_specifier;
981 tree function_decl;
982 VEC(tree,gc) *lang_base;
983 tree lang_name;
984 tree template_parms;
985 cp_binding_level *x_previous_class_level;
986 tree x_saved_tree;
987
988 /* Only used for uses of this in trailing return type. */
989 tree x_current_class_ptr;
990 tree x_current_class_ref;
991
992 int x_processing_template_decl;
993 int x_processing_specialization;
994 BOOL_BITFIELD x_processing_explicit_instantiation : 1;
995 BOOL_BITFIELD need_pop_function_context : 1;
996
997 int unevaluated_operand;
998 int inhibit_evaluation_warnings;
999
1000 struct stmt_tree_s x_stmt_tree;
1001
1002 cp_binding_level *class_bindings;
1003 cp_binding_level *bindings;
1004
1005 struct saved_scope *prev;
1006 };
1007
1008 /* The current open namespace. */
1009
1010 #define current_namespace scope_chain->old_namespace
1011
1012 /* The stack for namespaces of current declarations. */
1013
1014 #define decl_namespace_list scope_chain->decl_ns_list
1015
1016 /* IDENTIFIER_NODE: name of current class */
1017
1018 #define current_class_name scope_chain->class_name
1019
1020 /* _TYPE: the type of the current class */
1021
1022 #define current_class_type scope_chain->class_type
1023
1024 /* When parsing a class definition, the access specifier most recently
1025 given by the user, or, if no access specifier was given, the
1026 default value appropriate for the kind of class (i.e., struct,
1027 class, or union). */
1028
1029 #define current_access_specifier scope_chain->access_specifier
1030
1031 /* Pointer to the top of the language name stack. */
1032
1033 #define current_lang_base scope_chain->lang_base
1034 #define current_lang_name scope_chain->lang_name
1035
1036 /* When parsing a template declaration, a TREE_LIST represents the
1037 active template parameters. Each node in the list represents one
1038 level of template parameters. The innermost level is first in the
1039 list. The depth of each level is stored as an INTEGER_CST in the
1040 TREE_PURPOSE of each node. The parameters for that level are
1041 stored in the TREE_VALUE. */
1042
1043 #define current_template_parms scope_chain->template_parms
1044
1045 #define processing_template_decl scope_chain->x_processing_template_decl
1046 #define processing_specialization scope_chain->x_processing_specialization
1047 #define processing_explicit_instantiation scope_chain->x_processing_explicit_instantiation
1048
1049 /* The cached class binding level, from the most recently exited
1050 class, or NULL if none. */
1051
1052 #define previous_class_level scope_chain->x_previous_class_level
1053
1054 /* A list of private types mentioned, for deferred access checking. */
1055
1056 extern GTY(()) struct saved_scope *scope_chain;
1057
1058 struct GTY(()) cxx_int_tree_map {
1059 unsigned int uid;
1060 tree to;
1061 };
1062
1063 extern unsigned int cxx_int_tree_map_hash (const void *);
1064 extern int cxx_int_tree_map_eq (const void *, const void *);
1065
1066 /* Global state pertinent to the current function. */
1067
1068 struct GTY(()) language_function {
1069 struct c_language_function base;
1070
1071 tree x_cdtor_label;
1072 tree x_current_class_ptr;
1073 tree x_current_class_ref;
1074 tree x_eh_spec_block;
1075 tree x_in_charge_parm;
1076 tree x_vtt_parm;
1077 tree x_return_value;
1078
1079 BOOL_BITFIELD returns_value : 1;
1080 BOOL_BITFIELD returns_null : 1;
1081 BOOL_BITFIELD returns_abnormally : 1;
1082 BOOL_BITFIELD x_in_function_try_handler : 1;
1083 BOOL_BITFIELD x_in_base_initializer : 1;
1084
1085 /* True if this function can throw an exception. */
1086 BOOL_BITFIELD can_throw : 1;
1087
1088 htab_t GTY((param_is(struct named_label_entry))) x_named_labels;
1089 cp_binding_level *bindings;
1090 VEC(tree,gc) *x_local_names;
1091 htab_t GTY((param_is (struct cxx_int_tree_map))) extern_decl_map;
1092 };
1093
1094 /* The current C++-specific per-function global variables. */
1095
1096 #define cp_function_chain (cfun->language)
1097
1098 /* In a constructor destructor, the point at which all derived class
1099 destroying/construction has been done. I.e., just before a
1100 constructor returns, or before any base class destroying will be done
1101 in a destructor. */
1102
1103 #define cdtor_label cp_function_chain->x_cdtor_label
1104
1105 /* When we're processing a member function, current_class_ptr is the
1106 PARM_DECL for the `this' pointer. The current_class_ref is an
1107 expression for `*this'. */
1108
1109 #define current_class_ptr \
1110 (*(cfun && cp_function_chain \
1111 ? &cp_function_chain->x_current_class_ptr \
1112 : &scope_chain->x_current_class_ptr))
1113 #define current_class_ref \
1114 (*(cfun && cp_function_chain \
1115 ? &cp_function_chain->x_current_class_ref \
1116 : &scope_chain->x_current_class_ref))
1117
1118 /* The EH_SPEC_BLOCK for the exception-specifiers for the current
1119 function, if any. */
1120
1121 #define current_eh_spec_block cp_function_chain->x_eh_spec_block
1122
1123 /* The `__in_chrg' parameter for the current function. Only used for
1124 constructors and destructors. */
1125
1126 #define current_in_charge_parm cp_function_chain->x_in_charge_parm
1127
1128 /* The `__vtt_parm' parameter for the current function. Only used for
1129 constructors and destructors. */
1130
1131 #define current_vtt_parm cp_function_chain->x_vtt_parm
1132
1133 /* Set to 0 at beginning of a function definition, set to 1 if
1134 a return statement that specifies a return value is seen. */
1135
1136 #define current_function_returns_value cp_function_chain->returns_value
1137
1138 /* Set to 0 at beginning of a function definition, set to 1 if
1139 a return statement with no argument is seen. */
1140
1141 #define current_function_returns_null cp_function_chain->returns_null
1142
1143 /* Set to 0 at beginning of a function definition, set to 1 if
1144 a call to a noreturn function is seen. */
1145
1146 #define current_function_returns_abnormally \
1147 cp_function_chain->returns_abnormally
1148
1149 /* Nonzero if we are processing a base initializer. Zero elsewhere. */
1150 #define in_base_initializer cp_function_chain->x_in_base_initializer
1151
1152 #define in_function_try_handler cp_function_chain->x_in_function_try_handler
1153
1154 /* Expression always returned from function, or error_mark_node
1155 otherwise, for use by the automatic named return value optimization. */
1156
1157 #define current_function_return_value \
1158 (cp_function_chain->x_return_value)
1159
1160 /* True if NAME is the IDENTIFIER_NODE for an overloaded "operator
1161 new" or "operator delete". */
1162 #define NEW_DELETE_OPNAME_P(NAME) \
1163 ((NAME) == ansi_opname (NEW_EXPR) \
1164 || (NAME) == ansi_opname (VEC_NEW_EXPR) \
1165 || (NAME) == ansi_opname (DELETE_EXPR) \
1166 || (NAME) == ansi_opname (VEC_DELETE_EXPR))
1167
1168 #define ansi_opname(CODE) \
1169 (operator_name_info[(int) (CODE)].identifier)
1170 #define ansi_assopname(CODE) \
1171 (assignment_operator_name_info[(int) (CODE)].identifier)
1172
1173 /* TRUE if a tree code represents a statement. */
1174 extern bool statement_code_p[MAX_TREE_CODES];
1175
1176 #define STATEMENT_CODE_P(CODE) statement_code_p[(int) (CODE)]
1177
1178 enum languages { lang_c, lang_cplusplus, lang_java };
1179
1180 /* Macros to make error reporting functions' lives easier. */
1181 #define TYPE_IDENTIFIER(NODE) (DECL_NAME (TYPE_NAME (NODE)))
1182 #define TYPE_LINKAGE_IDENTIFIER(NODE) \
1183 (TYPE_IDENTIFIER (TYPE_MAIN_VARIANT (NODE)))
1184 #define TYPE_NAME_STRING(NODE) (IDENTIFIER_POINTER (TYPE_IDENTIFIER (NODE)))
1185 #define TYPE_NAME_LENGTH(NODE) (IDENTIFIER_LENGTH (TYPE_IDENTIFIER (NODE)))
1186
1187 /* Nonzero if NODE has no name for linkage purposes. */
1188 #define TYPE_ANONYMOUS_P(NODE) \
1189 (TAGGED_TYPE_P (NODE) && ANON_AGGRNAME_P (TYPE_LINKAGE_IDENTIFIER (NODE)))
1190
1191 /* The _DECL for this _TYPE. */
1192 #define TYPE_MAIN_DECL(NODE) (TYPE_STUB_DECL (TYPE_MAIN_VARIANT (NODE)))
1193
1194 /* Nonzero if T is a type that could resolve to any kind of concrete type
1195 at instantiation time. */
1196 #define WILDCARD_TYPE_P(T) \
1197 (TREE_CODE (T) == TEMPLATE_TYPE_PARM \
1198 || TREE_CODE (T) == TYPENAME_TYPE \
1199 || TREE_CODE (T) == TYPEOF_TYPE \
1200 || TREE_CODE (T) == BOUND_TEMPLATE_TEMPLATE_PARM \
1201 || TREE_CODE (T) == DECLTYPE_TYPE)
1202
1203 /* Nonzero if T is a class (or struct or union) type. Also nonzero
1204 for template type parameters, typename types, and instantiated
1205 template template parameters. Keep these checks in ascending code
1206 order. */
1207 #define MAYBE_CLASS_TYPE_P(T) (WILDCARD_TYPE_P (T) || CLASS_TYPE_P (T))
1208
1209 /* Set CLASS_TYPE_P for T to VAL. T must be a class, struct, or
1210 union type. */
1211 #define SET_CLASS_TYPE_P(T, VAL) \
1212 (TYPE_LANG_FLAG_5 (T) = (VAL))
1213
1214 /* Nonzero if T is a class type. Zero for template type parameters,
1215 typename types, and so forth. */
1216 #define CLASS_TYPE_P(T) \
1217 (RECORD_OR_UNION_CODE_P (TREE_CODE (T)) && TYPE_LANG_FLAG_5 (T))
1218
1219 /* Nonzero if T is a class type but not an union. */
1220 #define NON_UNION_CLASS_TYPE_P(T) \
1221 (CLASS_TYPE_P (T) && TREE_CODE (T) != UNION_TYPE)
1222
1223 /* Keep these checks in ascending code order. */
1224 #define RECORD_OR_UNION_CODE_P(T) \
1225 ((T) == RECORD_TYPE || (T) == UNION_TYPE)
1226 #define TAGGED_TYPE_P(T) \
1227 (CLASS_TYPE_P (T) || TREE_CODE (T) == ENUMERAL_TYPE)
1228 #define IS_OVERLOAD_TYPE(T) TAGGED_TYPE_P (T)
1229
1230 /* True if this a "Java" type, defined in 'extern "Java"'. */
1231 #define TYPE_FOR_JAVA(NODE) TYPE_LANG_FLAG_3 (NODE)
1232
1233 /* True if this type is dependent. This predicate is only valid if
1234 TYPE_DEPENDENT_P_VALID is true. */
1235 #define TYPE_DEPENDENT_P(NODE) TYPE_LANG_FLAG_0 (NODE)
1236
1237 /* True if dependent_type_p has been called for this type, with the
1238 result that TYPE_DEPENDENT_P is valid. */
1239 #define TYPE_DEPENDENT_P_VALID(NODE) TYPE_LANG_FLAG_6(NODE)
1240
1241 /* Nonzero if this type is const-qualified. */
1242 #define CP_TYPE_CONST_P(NODE) \
1243 ((cp_type_quals (NODE) & TYPE_QUAL_CONST) != 0)
1244
1245 /* Nonzero if this type is volatile-qualified. */
1246 #define CP_TYPE_VOLATILE_P(NODE) \
1247 ((cp_type_quals (NODE) & TYPE_QUAL_VOLATILE) != 0)
1248
1249 /* Nonzero if this type is restrict-qualified. */
1250 #define CP_TYPE_RESTRICT_P(NODE) \
1251 ((cp_type_quals (NODE) & TYPE_QUAL_RESTRICT) != 0)
1252
1253 /* Nonzero if this type is const-qualified, but not
1254 volatile-qualified. Other qualifiers are ignored. This macro is
1255 used to test whether or not it is OK to bind an rvalue to a
1256 reference. */
1257 #define CP_TYPE_CONST_NON_VOLATILE_P(NODE) \
1258 ((cp_type_quals (NODE) & (TYPE_QUAL_CONST | TYPE_QUAL_VOLATILE)) \
1259 == TYPE_QUAL_CONST)
1260
1261 #define FUNCTION_ARG_CHAIN(NODE) \
1262 TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (NODE)))
1263
1264 /* Given a FUNCTION_DECL, returns the first TREE_LIST out of TYPE_ARG_TYPES
1265 which refers to a user-written parameter. */
1266 #define FUNCTION_FIRST_USER_PARMTYPE(NODE) \
1267 skip_artificial_parms_for ((NODE), TYPE_ARG_TYPES (TREE_TYPE (NODE)))
1268
1269 /* Similarly, but for DECL_ARGUMENTS. */
1270 #define FUNCTION_FIRST_USER_PARM(NODE) \
1271 skip_artificial_parms_for ((NODE), DECL_ARGUMENTS (NODE))
1272
1273 /* Nonzero iff TYPE is derived from PARENT. Ignores accessibility and
1274 ambiguity issues. */
1275 #define DERIVED_FROM_P(PARENT, TYPE) \
1276 (lookup_base ((TYPE), (PARENT), ba_any, NULL) != NULL_TREE)
1277 /* Nonzero iff TYPE is uniquely derived from PARENT. Ignores
1278 accessibility. */
1279 #define UNIQUELY_DERIVED_FROM_P(PARENT, TYPE) \
1280 (lookup_base ((TYPE), (PARENT), ba_unique | ba_quiet, NULL) != NULL_TREE)
1281 /* Nonzero iff TYPE is publicly & uniquely derived from PARENT. */
1282 #define PUBLICLY_UNIQUELY_DERIVED_P(PARENT, TYPE) \
1283 (lookup_base ((TYPE), (PARENT), ba_ignore_scope | ba_check | ba_quiet, \
1284 NULL) != NULL_TREE)
1285
1286 /* Gives the visibility specification for a class type. */
1287 #define CLASSTYPE_VISIBILITY(TYPE) \
1288 DECL_VISIBILITY (TYPE_MAIN_DECL (TYPE))
1289 #define CLASSTYPE_VISIBILITY_SPECIFIED(TYPE) \
1290 DECL_VISIBILITY_SPECIFIED (TYPE_MAIN_DECL (TYPE))
1291
1292 typedef struct GTY (()) tree_pair_s {
1293 tree purpose;
1294 tree value;
1295 } tree_pair_s;
1296 typedef tree_pair_s *tree_pair_p;
1297 DEF_VEC_O (tree_pair_s);
1298 DEF_VEC_ALLOC_O (tree_pair_s,gc);
1299
1300 /* This is a few header flags for 'struct lang_type'. Actually,
1301 all but the first are used only for lang_type_class; they
1302 are put in this structure to save space. */
1303 struct GTY(()) lang_type_header {
1304 BOOL_BITFIELD is_lang_type_class : 1;
1305
1306 BOOL_BITFIELD has_type_conversion : 1;
1307 BOOL_BITFIELD has_copy_ctor : 1;
1308 BOOL_BITFIELD has_default_ctor : 1;
1309 BOOL_BITFIELD const_needs_init : 1;
1310 BOOL_BITFIELD ref_needs_init : 1;
1311 BOOL_BITFIELD has_const_copy_assign : 1;
1312
1313 BOOL_BITFIELD spare : 1;
1314 };
1315
1316 /* This structure provides additional information above and beyond
1317 what is provide in the ordinary tree_type. In the past, we used it
1318 for the types of class types, template parameters types, typename
1319 types, and so forth. However, there can be many (tens to hundreds
1320 of thousands) of template parameter types in a compilation, and
1321 there's no need for this additional information in that case.
1322 Therefore, we now use this data structure only for class types.
1323
1324 In the past, it was thought that there would be relatively few
1325 class types. However, in the presence of heavy use of templates,
1326 many (i.e., thousands) of classes can easily be generated.
1327 Therefore, we should endeavor to keep the size of this structure to
1328 a minimum. */
1329 struct GTY(()) lang_type_class {
1330 struct lang_type_header h;
1331
1332 unsigned char align;
1333
1334 unsigned has_mutable : 1;
1335 unsigned com_interface : 1;
1336 unsigned non_pod_class : 1;
1337 unsigned nearly_empty_p : 1;
1338 unsigned user_align : 1;
1339 unsigned has_copy_assign : 1;
1340 unsigned has_new : 1;
1341 unsigned has_array_new : 1;
1342
1343 unsigned gets_delete : 2;
1344 unsigned interface_only : 1;
1345 unsigned interface_unknown : 1;
1346 unsigned contains_empty_class_p : 1;
1347 unsigned anon_aggr : 1;
1348 unsigned non_zero_init : 1;
1349 unsigned empty_p : 1;
1350
1351 unsigned vec_new_uses_cookie : 1;
1352 unsigned declared_class : 1;
1353 unsigned diamond_shaped : 1;
1354 unsigned repeated_base : 1;
1355 unsigned being_defined : 1;
1356 unsigned java_interface : 1;
1357 unsigned debug_requested : 1;
1358 unsigned fields_readonly : 1;
1359
1360 unsigned use_template : 2;
1361 unsigned ptrmemfunc_flag : 1;
1362 unsigned was_anonymous : 1;
1363 unsigned lazy_default_ctor : 1;
1364 unsigned lazy_copy_ctor : 1;
1365 unsigned lazy_copy_assign : 1;
1366 unsigned lazy_destructor : 1;
1367
1368 unsigned has_const_copy_ctor : 1;
1369 unsigned has_complex_copy_ctor : 1;
1370 unsigned has_complex_copy_assign : 1;
1371 unsigned non_aggregate : 1;
1372 unsigned has_complex_dflt : 1;
1373 unsigned has_list_ctor : 1;
1374 unsigned non_std_layout : 1;
1375 unsigned is_literal : 1;
1376
1377 unsigned lazy_move_ctor : 1;
1378 unsigned lazy_move_assign : 1;
1379 unsigned has_complex_move_ctor : 1;
1380 unsigned has_complex_move_assign : 1;
1381 unsigned has_constexpr_ctor : 1;
1382 unsigned is_final : 1;
1383
1384 /* When adding a flag here, consider whether or not it ought to
1385 apply to a template instance if it applies to the template. If
1386 so, make sure to copy it in instantiate_class_template! */
1387
1388 /* There are some bits left to fill out a 32-bit word. Keep track
1389 of this by updating the size of this bitfield whenever you add or
1390 remove a flag. */
1391 unsigned dummy : 2;
1392
1393 tree primary_base;
1394 VEC(tree_pair_s,gc) *vcall_indices;
1395 tree vtables;
1396 tree typeinfo_var;
1397 VEC(tree,gc) *vbases;
1398 binding_table nested_udts;
1399 tree as_base;
1400 VEC(tree,gc) *pure_virtuals;
1401 tree friend_classes;
1402 VEC(tree,gc) * GTY((reorder ("resort_type_method_vec"))) methods;
1403 tree key_method;
1404 tree decl_list;
1405 tree template_info;
1406 tree befriending_classes;
1407 /* In a RECORD_TYPE, information specific to Objective-C++, such
1408 as a list of adopted protocols or a pointer to a corresponding
1409 @interface. See objc/objc-act.h for details. */
1410 tree objc_info;
1411 /* sorted_fields is sorted based on a pointer, so we need to be able
1412 to resort it if pointers get rearranged. */
1413 struct sorted_fields_type * GTY ((reorder ("resort_sorted_fields")))
1414 sorted_fields;
1415 /* FIXME reuse another field? */
1416 tree lambda_expr;
1417 };
1418
1419 struct GTY(()) lang_type_ptrmem {
1420 struct lang_type_header h;
1421 tree record;
1422 };
1423
1424 struct GTY((variable_size)) lang_type {
1425 union lang_type_u
1426 {
1427 struct lang_type_header GTY((skip (""))) h;
1428 struct lang_type_class GTY((tag ("1"))) c;
1429 struct lang_type_ptrmem GTY((tag ("0"))) ptrmem;
1430 } GTY((desc ("%h.h.is_lang_type_class"))) u;
1431 };
1432
1433 #if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
1434
1435 #define LANG_TYPE_CLASS_CHECK(NODE) __extension__ \
1436 ({ struct lang_type *lt = TYPE_LANG_SPECIFIC (NODE); \
1437 if (! lt->u.h.is_lang_type_class) \
1438 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
1439 <->u.c; })
1440
1441 #define LANG_TYPE_PTRMEM_CHECK(NODE) __extension__ \
1442 ({ struct lang_type *lt = TYPE_LANG_SPECIFIC (NODE); \
1443 if (lt->u.h.is_lang_type_class) \
1444 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
1445 <->u.ptrmem; })
1446
1447 #else
1448
1449 #define LANG_TYPE_CLASS_CHECK(NODE) (&TYPE_LANG_SPECIFIC (NODE)->u.c)
1450 #define LANG_TYPE_PTRMEM_CHECK(NODE) (&TYPE_LANG_SPECIFIC (NODE)->u.ptrmem)
1451
1452 #endif /* ENABLE_TREE_CHECKING */
1453
1454 /* Nonzero for _CLASSTYPE means that operator delete is defined. */
1455 #define TYPE_GETS_DELETE(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->gets_delete)
1456 #define TYPE_GETS_REG_DELETE(NODE) (TYPE_GETS_DELETE (NODE) & 1)
1457
1458 /* Nonzero if `new NODE[x]' should cause the allocation of extra
1459 storage to indicate how many array elements are in use. */
1460 #define TYPE_VEC_NEW_USES_COOKIE(NODE) \
1461 (CLASS_TYPE_P (NODE) \
1462 && LANG_TYPE_CLASS_CHECK (NODE)->vec_new_uses_cookie)
1463
1464 /* Nonzero means that this _CLASSTYPE node defines ways of converting
1465 itself to other types. */
1466 #define TYPE_HAS_CONVERSION(NODE) \
1467 (LANG_TYPE_CLASS_CHECK (NODE)->h.has_type_conversion)
1468
1469 /* Nonzero means that NODE (a class type) has a default constructor --
1470 but that it has not yet been declared. */
1471 #define CLASSTYPE_LAZY_DEFAULT_CTOR(NODE) \
1472 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_default_ctor)
1473
1474 /* Nonzero means that NODE (a class type) has a copy constructor --
1475 but that it has not yet been declared. */
1476 #define CLASSTYPE_LAZY_COPY_CTOR(NODE) \
1477 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_copy_ctor)
1478
1479 /* Nonzero means that NODE (a class type) has a move constructor --
1480 but that it has not yet been declared. */
1481 #define CLASSTYPE_LAZY_MOVE_CTOR(NODE) \
1482 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_move_ctor)
1483
1484 /* Nonzero means that NODE (a class type) has an assignment operator
1485 -- but that it has not yet been declared. */
1486 #define CLASSTYPE_LAZY_COPY_ASSIGN(NODE) \
1487 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_copy_assign)
1488
1489 /* Nonzero means that NODE (a class type) has an assignment operator
1490 -- but that it has not yet been declared. */
1491 #define CLASSTYPE_LAZY_MOVE_ASSIGN(NODE) \
1492 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_move_assign)
1493
1494 /* Nonzero means that NODE (a class type) has a destructor -- but that
1495 it has not yet been declared. */
1496 #define CLASSTYPE_LAZY_DESTRUCTOR(NODE) \
1497 (LANG_TYPE_CLASS_CHECK (NODE)->lazy_destructor)
1498
1499 /* Nonzero means that NODE (a class type) is final */
1500 #define CLASSTYPE_FINAL(NODE) \
1501 (LANG_TYPE_CLASS_CHECK (NODE)->is_final)
1502
1503
1504 /* Nonzero means that this _CLASSTYPE node overloads operator=(X&). */
1505 #define TYPE_HAS_COPY_ASSIGN(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_copy_assign)
1506
1507 /* True iff the class type NODE has an "operator =" whose parameter
1508 has a parameter of type "const X&". */
1509 #define TYPE_HAS_CONST_COPY_ASSIGN(NODE) \
1510 (LANG_TYPE_CLASS_CHECK (NODE)->h.has_const_copy_assign)
1511
1512 /* Nonzero means that this _CLASSTYPE node has an X(X&) constructor. */
1513 #define TYPE_HAS_COPY_CTOR(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->h.has_copy_ctor)
1514 #define TYPE_HAS_CONST_COPY_CTOR(NODE) \
1515 (LANG_TYPE_CLASS_CHECK (NODE)->has_const_copy_ctor)
1516
1517 /* Nonzero if this class has an X(initializer_list<T>) constructor. */
1518 #define TYPE_HAS_LIST_CTOR(NODE) \
1519 (LANG_TYPE_CLASS_CHECK (NODE)->has_list_ctor)
1520
1521 /* Nonzero if this class has a constexpr constructor other than a copy/move
1522 constructor. Note that a class can have constexpr constructors for
1523 static initialization even if it isn't a literal class. */
1524 #define TYPE_HAS_CONSTEXPR_CTOR(NODE) \
1525 (LANG_TYPE_CLASS_CHECK (NODE)->has_constexpr_ctor)
1526
1527 /* Nonzero if this class defines an overloaded operator new. (An
1528 operator new [] doesn't count.) */
1529 #define TYPE_HAS_NEW_OPERATOR(NODE) \
1530 (LANG_TYPE_CLASS_CHECK (NODE)->has_new)
1531
1532 /* Nonzero if this class defines an overloaded operator new[]. */
1533 #define TYPE_HAS_ARRAY_NEW_OPERATOR(NODE) \
1534 (LANG_TYPE_CLASS_CHECK (NODE)->has_array_new)
1535
1536 /* Nonzero means that this type is being defined. I.e., the left brace
1537 starting the definition of this type has been seen. */
1538 #define TYPE_BEING_DEFINED(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->being_defined)
1539
1540 /* Nonzero means that this type is either complete or being defined, so we
1541 can do lookup in it. */
1542 #define COMPLETE_OR_OPEN_TYPE_P(NODE) \
1543 (COMPLETE_TYPE_P (NODE) || (CLASS_TYPE_P (NODE) && TYPE_BEING_DEFINED (NODE)))
1544
1545 /* Mark bits for repeated base checks. */
1546 #define TYPE_MARKED_P(NODE) TREE_LANG_FLAG_6 (TYPE_CHECK (NODE))
1547
1548 /* Nonzero if the class NODE has multiple paths to the same (virtual)
1549 base object. */
1550 #define CLASSTYPE_DIAMOND_SHAPED_P(NODE) \
1551 (LANG_TYPE_CLASS_CHECK(NODE)->diamond_shaped)
1552
1553 /* Nonzero if the class NODE has multiple instances of the same base
1554 type. */
1555 #define CLASSTYPE_REPEATED_BASE_P(NODE) \
1556 (LANG_TYPE_CLASS_CHECK(NODE)->repeated_base)
1557
1558 /* The member function with which the vtable will be emitted:
1559 the first noninline non-pure-virtual member function. NULL_TREE
1560 if there is no key function or if this is a class template */
1561 #define CLASSTYPE_KEY_METHOD(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->key_method)
1562
1563 /* Vector member functions defined in this class. Each element is
1564 either a FUNCTION_DECL, a TEMPLATE_DECL, or an OVERLOAD. All
1565 functions with the same name end up in the same slot. The first
1566 two elements are for constructors, and destructors, respectively.
1567 All template conversion operators to innermost template dependent
1568 types are overloaded on the next slot, if they exist. Note, the
1569 names for these functions will not all be the same. The
1570 non-template conversion operators & templated conversions to
1571 non-innermost template types are next, followed by ordinary member
1572 functions. There may be empty entries at the end of the vector.
1573 The conversion operators are unsorted. The ordinary member
1574 functions are sorted, once the class is complete. */
1575 #define CLASSTYPE_METHOD_VEC(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->methods)
1576
1577 /* For class templates, this is a TREE_LIST of all member data,
1578 functions, types, and friends in the order of declaration.
1579 The TREE_PURPOSE of each TREE_LIST is NULL_TREE for a friend,
1580 and the RECORD_TYPE for the class template otherwise. */
1581 #define CLASSTYPE_DECL_LIST(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->decl_list)
1582
1583 /* The slot in the CLASSTYPE_METHOD_VEC where constructors go. */
1584 #define CLASSTYPE_CONSTRUCTOR_SLOT 0
1585
1586 /* The slot in the CLASSTYPE_METHOD_VEC where destructors go. */
1587 #define CLASSTYPE_DESTRUCTOR_SLOT 1
1588
1589 /* The first slot in the CLASSTYPE_METHOD_VEC where conversion
1590 operators can appear. */
1591 #define CLASSTYPE_FIRST_CONVERSION_SLOT 2
1592
1593 /* A FUNCTION_DECL or OVERLOAD for the constructors for NODE. These
1594 are the constructors that take an in-charge parameter. */
1595 #define CLASSTYPE_CONSTRUCTORS(NODE) \
1596 (VEC_index (tree, CLASSTYPE_METHOD_VEC (NODE), CLASSTYPE_CONSTRUCTOR_SLOT))
1597
1598 /* A FUNCTION_DECL for the destructor for NODE. These are the
1599 destructors that take an in-charge parameter. If
1600 CLASSTYPE_LAZY_DESTRUCTOR is true, then this entry will be NULL
1601 until the destructor is created with lazily_declare_fn. */
1602 #define CLASSTYPE_DESTRUCTORS(NODE) \
1603 (CLASSTYPE_METHOD_VEC (NODE) \
1604 ? VEC_index (tree, CLASSTYPE_METHOD_VEC (NODE), CLASSTYPE_DESTRUCTOR_SLOT) \
1605 : NULL_TREE)
1606
1607 /* A dictionary of the nested user-defined-types (class-types, or enums)
1608 found within this class. This table includes nested member class
1609 templates. */
1610 #define CLASSTYPE_NESTED_UTDS(NODE) \
1611 (LANG_TYPE_CLASS_CHECK (NODE)->nested_udts)
1612
1613 /* Nonzero if NODE has a primary base class, i.e., a base class with
1614 which it shares the virtual function table pointer. */
1615 #define CLASSTYPE_HAS_PRIMARY_BASE_P(NODE) \
1616 (CLASSTYPE_PRIMARY_BINFO (NODE) != NULL_TREE)
1617
1618 /* If non-NULL, this is the binfo for the primary base class, i.e.,
1619 the base class which contains the virtual function table pointer
1620 for this class. */
1621 #define CLASSTYPE_PRIMARY_BINFO(NODE) \
1622 (LANG_TYPE_CLASS_CHECK (NODE)->primary_base)
1623
1624 /* A vector of BINFOs for the direct and indirect virtual base classes
1625 that this type uses in a post-order depth-first left-to-right
1626 order. (In other words, these bases appear in the order that they
1627 should be initialized.) */
1628 #define CLASSTYPE_VBASECLASSES(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->vbases)
1629
1630 /* The type corresponding to NODE when NODE is used as a base class,
1631 i.e., NODE without virtual base classes. */
1632
1633 #define CLASSTYPE_AS_BASE(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->as_base)
1634
1635 /* True iff NODE is the CLASSTYPE_AS_BASE version of some type. */
1636
1637 #define IS_FAKE_BASE_TYPE(NODE) \
1638 (TREE_CODE (NODE) == RECORD_TYPE \
1639 && TYPE_CONTEXT (NODE) && CLASS_TYPE_P (TYPE_CONTEXT (NODE)) \
1640 && CLASSTYPE_AS_BASE (TYPE_CONTEXT (NODE)) == (NODE))
1641
1642 /* These are the size and alignment of the type without its virtual
1643 base classes, for when we use this type as a base itself. */
1644 #define CLASSTYPE_SIZE(NODE) TYPE_SIZE (CLASSTYPE_AS_BASE (NODE))
1645 #define CLASSTYPE_SIZE_UNIT(NODE) TYPE_SIZE_UNIT (CLASSTYPE_AS_BASE (NODE))
1646 #define CLASSTYPE_ALIGN(NODE) TYPE_ALIGN (CLASSTYPE_AS_BASE (NODE))
1647 #define CLASSTYPE_USER_ALIGN(NODE) TYPE_USER_ALIGN (CLASSTYPE_AS_BASE (NODE))
1648
1649 /* The alignment of NODE, without its virtual bases, in bytes. */
1650 #define CLASSTYPE_ALIGN_UNIT(NODE) \
1651 (CLASSTYPE_ALIGN (NODE) / BITS_PER_UNIT)
1652
1653 /* True if this a Java interface type, declared with
1654 '__attribute__ ((java_interface))'. */
1655 #define TYPE_JAVA_INTERFACE(NODE) \
1656 (LANG_TYPE_CLASS_CHECK (NODE)->java_interface)
1657
1658 /* A VEC(tree) of virtual functions which cannot be inherited by
1659 derived classes. When deriving from this type, the derived
1660 class must provide its own definition for each of these functions. */
1661 #define CLASSTYPE_PURE_VIRTUALS(NODE) \
1662 (LANG_TYPE_CLASS_CHECK (NODE)->pure_virtuals)
1663
1664 /* Nonzero means that this type has an X() constructor. */
1665 #define TYPE_HAS_DEFAULT_CONSTRUCTOR(NODE) \
1666 (LANG_TYPE_CLASS_CHECK (NODE)->h.has_default_ctor)
1667
1668 /* Nonzero means that this type contains a mutable member. */
1669 #define CLASSTYPE_HAS_MUTABLE(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_mutable)
1670 #define TYPE_HAS_MUTABLE_P(NODE) (cp_has_mutable_p (NODE))
1671
1672 /* Nonzero means that this class type is not POD for the purpose of layout
1673 (as defined in the ABI). This is different from the language's POD. */
1674 #define CLASSTYPE_NON_LAYOUT_POD_P(NODE) \
1675 (LANG_TYPE_CLASS_CHECK (NODE)->non_pod_class)
1676
1677 /* Nonzero means that this class type is a non-standard-layout class. */
1678 #define CLASSTYPE_NON_STD_LAYOUT(NODE) \
1679 (LANG_TYPE_CLASS_CHECK (NODE)->non_std_layout)
1680
1681 /* Nonzero means that this class contains pod types whose default
1682 initialization is not a zero initialization (namely, pointers to
1683 data members). */
1684 #define CLASSTYPE_NON_ZERO_INIT_P(NODE) \
1685 (LANG_TYPE_CLASS_CHECK (NODE)->non_zero_init)
1686
1687 /* Nonzero if this class is "empty" in the sense of the C++ ABI. */
1688 #define CLASSTYPE_EMPTY_P(NODE) \
1689 (LANG_TYPE_CLASS_CHECK (NODE)->empty_p)
1690
1691 /* Nonzero if this class is "nearly empty", i.e., contains only a
1692 virtual function table pointer. */
1693 #define CLASSTYPE_NEARLY_EMPTY_P(NODE) \
1694 (LANG_TYPE_CLASS_CHECK (NODE)->nearly_empty_p)
1695
1696 /* Nonzero if this class contains an empty subobject. */
1697 #define CLASSTYPE_CONTAINS_EMPTY_CLASS_P(NODE) \
1698 (LANG_TYPE_CLASS_CHECK (NODE)->contains_empty_class_p)
1699
1700 /* A list of class types of which this type is a friend. The
1701 TREE_VALUE is normally a TYPE, but will be a TEMPLATE_DECL in the
1702 case of a template friend. */
1703 #define CLASSTYPE_FRIEND_CLASSES(NODE) \
1704 (LANG_TYPE_CLASS_CHECK (NODE)->friend_classes)
1705
1706 /* A list of the classes which grant friendship to this class. */
1707 #define CLASSTYPE_BEFRIENDING_CLASSES(NODE) \
1708 (LANG_TYPE_CLASS_CHECK (NODE)->befriending_classes)
1709
1710 /* The associated LAMBDA_EXPR that made this class. */
1711 #define CLASSTYPE_LAMBDA_EXPR(NODE) \
1712 (LANG_TYPE_CLASS_CHECK (NODE)->lambda_expr)
1713 /* The extra mangling scope for this closure type. */
1714 #define LAMBDA_TYPE_EXTRA_SCOPE(NODE) \
1715 (LAMBDA_EXPR_EXTRA_SCOPE (CLASSTYPE_LAMBDA_EXPR (NODE)))
1716
1717 /* Say whether this node was declared as a "class" or a "struct". */
1718 #define CLASSTYPE_DECLARED_CLASS(NODE) \
1719 (LANG_TYPE_CLASS_CHECK (NODE)->declared_class)
1720
1721 /* Nonzero if this class has const members
1722 which have no specified initialization. */
1723 #define CLASSTYPE_READONLY_FIELDS_NEED_INIT(NODE) \
1724 (TYPE_LANG_SPECIFIC (NODE) \
1725 ? LANG_TYPE_CLASS_CHECK (NODE)->h.const_needs_init : 0)
1726 #define SET_CLASSTYPE_READONLY_FIELDS_NEED_INIT(NODE, VALUE) \
1727 (LANG_TYPE_CLASS_CHECK (NODE)->h.const_needs_init = (VALUE))
1728
1729 /* Nonzero if this class has ref members
1730 which have no specified initialization. */
1731 #define CLASSTYPE_REF_FIELDS_NEED_INIT(NODE) \
1732 (TYPE_LANG_SPECIFIC (NODE) \
1733 ? LANG_TYPE_CLASS_CHECK (NODE)->h.ref_needs_init : 0)
1734 #define SET_CLASSTYPE_REF_FIELDS_NEED_INIT(NODE, VALUE) \
1735 (LANG_TYPE_CLASS_CHECK (NODE)->h.ref_needs_init = (VALUE))
1736
1737 /* Nonzero if this class is included from a header file which employs
1738 `#pragma interface', and it is not included in its implementation file. */
1739 #define CLASSTYPE_INTERFACE_ONLY(NODE) \
1740 (LANG_TYPE_CLASS_CHECK (NODE)->interface_only)
1741
1742 /* True if we have already determined whether or not vtables, VTTs,
1743 typeinfo, and other similar per-class data should be emitted in
1744 this translation unit. This flag does not indicate whether or not
1745 these items should be emitted; it only indicates that we know one
1746 way or the other. */
1747 #define CLASSTYPE_INTERFACE_KNOWN(NODE) \
1748 (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown == 0)
1749 /* The opposite of CLASSTYPE_INTERFACE_KNOWN. */
1750 #define CLASSTYPE_INTERFACE_UNKNOWN(NODE) \
1751 (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown)
1752
1753 #define SET_CLASSTYPE_INTERFACE_UNKNOWN_X(NODE,X) \
1754 (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown = !!(X))
1755 #define SET_CLASSTYPE_INTERFACE_UNKNOWN(NODE) \
1756 (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown = 1)
1757 #define SET_CLASSTYPE_INTERFACE_KNOWN(NODE) \
1758 (LANG_TYPE_CLASS_CHECK (NODE)->interface_unknown = 0)
1759
1760 /* Nonzero if a _DECL node requires us to output debug info for this class. */
1761 #define CLASSTYPE_DEBUG_REQUESTED(NODE) \
1762 (LANG_TYPE_CLASS_CHECK (NODE)->debug_requested)
1763
1764 /* Additional macros for inheritance information. */
1765
1766 /* Nonzero means that this class is on a path leading to a new vtable. */
1767 #define BINFO_VTABLE_PATH_MARKED(NODE) BINFO_FLAG_1 (NODE)
1768
1769 /* Nonzero means B (a BINFO) has its own vtable. Any copies will not
1770 have this flag set. */
1771 #define BINFO_NEW_VTABLE_MARKED(B) (BINFO_FLAG_2 (B))
1772
1773 /* Compare a BINFO_TYPE with another type for equality. For a binfo,
1774 this is functionally equivalent to using same_type_p, but
1775 measurably faster. At least one of the arguments must be a
1776 BINFO_TYPE. The other can be a BINFO_TYPE or a regular type. If
1777 BINFO_TYPE(T) ever stops being the main variant of the class the
1778 binfo is for, this macro must change. */
1779 #define SAME_BINFO_TYPE_P(A, B) ((A) == (B))
1780
1781 /* Any subobject that needs a new vtable must have a vptr and must not
1782 be a non-virtual primary base (since it would then use the vtable from a
1783 derived class and never become non-primary.) */
1784 #define SET_BINFO_NEW_VTABLE_MARKED(B) \
1785 (BINFO_NEW_VTABLE_MARKED (B) = 1, \
1786 gcc_assert (!BINFO_PRIMARY_P (B) || BINFO_VIRTUAL_P (B)), \
1787 gcc_assert (TYPE_VFIELD (BINFO_TYPE (B))))
1788
1789 /* Nonzero if this binfo is for a dependent base - one that should not
1790 be searched. */
1791 #define BINFO_DEPENDENT_BASE_P(NODE) BINFO_FLAG_3 (NODE)
1792
1793 /* Nonzero if this binfo has lost its primary base binfo (because that
1794 is a nearly-empty virtual base that has been taken by some other
1795 base in the complete hierarchy. */
1796 #define BINFO_LOST_PRIMARY_P(NODE) BINFO_FLAG_4 (NODE)
1797
1798 /* Nonzero if this BINFO is a primary base class. */
1799 #define BINFO_PRIMARY_P(NODE) BINFO_FLAG_5(NODE)
1800
1801 /* Used by various search routines. */
1802 #define IDENTIFIER_MARKED(NODE) TREE_LANG_FLAG_0 (NODE)
1803
1804 /* A VEC(tree_pair_s) of the vcall indices associated with the class
1805 NODE. The PURPOSE of each element is a FUNCTION_DECL for a virtual
1806 function. The VALUE is the index into the virtual table where the
1807 vcall offset for that function is stored, when NODE is a virtual
1808 base. */
1809 #define CLASSTYPE_VCALL_INDICES(NODE) \
1810 (LANG_TYPE_CLASS_CHECK (NODE)->vcall_indices)
1811
1812 /* The various vtables for the class NODE. The primary vtable will be
1813 first, followed by the construction vtables and VTT, if any. */
1814 #define CLASSTYPE_VTABLES(NODE) \
1815 (LANG_TYPE_CLASS_CHECK (NODE)->vtables)
1816
1817 /* The std::type_info variable representing this class, or NULL if no
1818 such variable has been created. This field is only set for the
1819 TYPE_MAIN_VARIANT of the class. */
1820 #define CLASSTYPE_TYPEINFO_VAR(NODE) \
1821 (LANG_TYPE_CLASS_CHECK (NODE)->typeinfo_var)
1822
1823 /* Accessor macros for the BINFO_VIRTUALS list. */
1824
1825 /* The number of bytes by which to adjust the `this' pointer when
1826 calling this virtual function. Subtract this value from the this
1827 pointer. Always non-NULL, might be constant zero though. */
1828 #define BV_DELTA(NODE) (TREE_PURPOSE (NODE))
1829
1830 /* If non-NULL, the vtable index at which to find the vcall offset
1831 when calling this virtual function. Add the value at that vtable
1832 index to the this pointer. */
1833 #define BV_VCALL_INDEX(NODE) (TREE_TYPE (NODE))
1834
1835 /* The function to call. */
1836 #define BV_FN(NODE) (TREE_VALUE (NODE))
1837
1838 /* Whether or not this entry is for a lost primary virtual base. */
1839 #define BV_LOST_PRIMARY(NODE) (TREE_LANG_FLAG_0 (NODE))
1840
1841 /* For FUNCTION_TYPE or METHOD_TYPE, a list of the exceptions that
1842 this type can raise. Each TREE_VALUE is a _TYPE. The TREE_VALUE
1843 will be NULL_TREE to indicate a throw specification of `()', or
1844 no exceptions allowed. For a noexcept specification, TREE_VALUE
1845 is NULL_TREE and TREE_PURPOSE is the constant-expression. For
1846 a deferred noexcept-specification, TREE_PURPOSE is a DEFERRED_NOEXCEPT
1847 (for templates) or an OVERLOAD list of functions (for implicitly
1848 declared functions). */
1849 #define TYPE_RAISES_EXCEPTIONS(NODE) TYPE_LANG_SLOT_1 (NODE)
1850
1851 /* For FUNCTION_TYPE or METHOD_TYPE, return 1 iff it is declared `throw()'
1852 or noexcept(true). */
1853 #define TYPE_NOTHROW_P(NODE) nothrow_spec_p (TYPE_RAISES_EXCEPTIONS (NODE))
1854
1855 /* For FUNCTION_TYPE or METHOD_TYPE, true if NODE is noexcept. This is the
1856 case for things declared noexcept(true) and, with -fnothrow-opt, for
1857 throw() functions. */
1858 #define TYPE_NOEXCEPT_P(NODE) type_noexcept_p (NODE)
1859
1860 /* The binding level associated with the namespace. */
1861 #define NAMESPACE_LEVEL(NODE) \
1862 (LANG_DECL_NS_CHECK (NODE)->level)
1863
1864 /* Flags shared by all forms of DECL_LANG_SPECIFIC.
1865
1866 Some of the flags live here only to make lang_decl_min/fn smaller. Do
1867 not make this struct larger than 32 bits; instead, make sel smaller. */
1868
1869 struct GTY(()) lang_decl_base {
1870 unsigned selector : 16; /* Larger than necessary for faster access. */
1871 ENUM_BITFIELD(languages) language : 4;
1872 unsigned use_template : 2;
1873 unsigned not_really_extern : 1; /* var or fn */
1874 unsigned initialized_in_class : 1; /* var or fn */
1875 unsigned repo_available_p : 1; /* var or fn */
1876 unsigned threadprivate_or_deleted_p : 1; /* var or fn */
1877 unsigned anticipated_p : 1; /* fn or type */
1878 unsigned friend_attr : 1; /* fn or type */
1879 unsigned template_conv_p : 1; /* var or template */
1880 unsigned odr_used : 1; /* var or fn */
1881 unsigned u2sel : 1;
1882 /* 1 spare bit */
1883 };
1884
1885 /* True for DECL codes which have template info and access. */
1886 #define LANG_DECL_HAS_MIN(NODE) \
1887 (TREE_CODE (NODE) == FUNCTION_DECL \
1888 || TREE_CODE (NODE) == FIELD_DECL \
1889 || TREE_CODE (NODE) == VAR_DECL \
1890 || TREE_CODE (NODE) == CONST_DECL \
1891 || TREE_CODE (NODE) == TYPE_DECL \
1892 || TREE_CODE (NODE) == TEMPLATE_DECL \
1893 || TREE_CODE (NODE) == USING_DECL)
1894
1895 /* DECL_LANG_SPECIFIC for the above codes. */
1896
1897 struct GTY(()) lang_decl_min {
1898 struct lang_decl_base base;
1899
1900 /* In a FUNCTION_DECL for which DECL_THUNK_P holds, this is
1901 THUNK_ALIAS.
1902 In a FUNCTION_DECL for which DECL_THUNK_P does not hold,
1903 VAR_DECL, TYPE_DECL, or TEMPLATE_DECL, this is
1904 DECL_TEMPLATE_INFO. */
1905 tree template_info;
1906
1907 union lang_decl_u2 {
1908 /* In a FUNCTION_DECL for which DECL_THUNK_P holds, this is
1909 THUNK_VIRTUAL_OFFSET.
1910 Otherwise this is DECL_ACCESS. */
1911 tree GTY ((tag ("0"))) access;
1912
1913 /* For VAR_DECL in function, this is DECL_DISCRIMINATOR. */
1914 int GTY ((tag ("1"))) discriminator;
1915 } GTY ((desc ("%0.u.base.u2sel"))) u2;
1916 };
1917
1918 /* Additional DECL_LANG_SPECIFIC information for functions. */
1919
1920 struct GTY(()) lang_decl_fn {
1921 struct lang_decl_min min;
1922
1923 /* In an overloaded operator, this is the value of
1924 DECL_OVERLOADED_OPERATOR_P. */
1925 ENUM_BITFIELD (tree_code) operator_code : 16;
1926
1927 unsigned global_ctor_p : 1;
1928 unsigned global_dtor_p : 1;
1929 unsigned constructor_attr : 1;
1930 unsigned destructor_attr : 1;
1931 unsigned assignment_operator_p : 1;
1932 unsigned static_function : 1;
1933 unsigned pure_virtual : 1;
1934 unsigned defaulted_p : 1;
1935
1936 unsigned has_in_charge_parm_p : 1;
1937 unsigned has_vtt_parm_p : 1;
1938 unsigned pending_inline_p : 1;
1939 unsigned nonconverting : 1;
1940 unsigned thunk_p : 1;
1941 unsigned this_thunk_p : 1;
1942 unsigned hidden_friend_p : 1;
1943 unsigned suppress_implicit_decl : 1;
1944
1945 /* For a non-thunk function decl, this is a tree list of
1946 friendly classes. For a thunk function decl, it is the
1947 thunked to function decl. */
1948 tree befriending_classes;
1949
1950 /* For a non-virtual FUNCTION_DECL, this is
1951 DECL_FRIEND_CONTEXT. For a virtual FUNCTION_DECL for which
1952 DECL_THIS_THUNK_P does not hold, this is DECL_THUNKS. Both
1953 this pointer and result pointer adjusting thunks are
1954 chained here. This pointer thunks to return pointer thunks
1955 will be chained on the return pointer thunk. */
1956 tree context;
1957
1958 union lang_decl_u5
1959 {
1960 /* In a non-thunk FUNCTION_DECL or TEMPLATE_DECL, this is
1961 DECL_CLONED_FUNCTION. */
1962 tree GTY ((tag ("0"))) cloned_function;
1963
1964 /* In a FUNCTION_DECL for which THUNK_P holds this is the
1965 THUNK_FIXED_OFFSET. */
1966 HOST_WIDE_INT GTY ((tag ("1"))) fixed_offset;
1967 } GTY ((desc ("%1.thunk_p"))) u5;
1968
1969 union lang_decl_u3
1970 {
1971 struct cp_token_cache * GTY ((tag ("1"))) pending_inline_info;
1972 struct language_function * GTY ((tag ("0")))
1973 saved_language_function;
1974 } GTY ((desc ("%1.pending_inline_p"))) u;
1975
1976 };
1977
1978 /* DECL_LANG_SPECIFIC for namespaces. */
1979
1980 struct GTY(()) lang_decl_ns {
1981 struct lang_decl_base base;
1982 cp_binding_level *level;
1983 };
1984
1985 /* DECL_LANG_SPECIFIC for parameters. */
1986
1987 struct GTY(()) lang_decl_parm {
1988 struct lang_decl_base base;
1989 int level;
1990 int index;
1991 };
1992
1993 /* DECL_LANG_SPECIFIC for all types. It would be nice to just make this a
1994 union rather than a struct containing a union as its only field, but
1995 tree.h declares it as a struct. */
1996
1997 struct GTY((variable_size)) lang_decl {
1998 union GTY((desc ("%h.base.selector"))) lang_decl_u {
1999 struct lang_decl_base GTY ((default)) base;
2000 struct lang_decl_min GTY((tag ("0"))) min;
2001 struct lang_decl_fn GTY ((tag ("1"))) fn;
2002 struct lang_decl_ns GTY((tag ("2"))) ns;
2003 struct lang_decl_parm GTY((tag ("3"))) parm;
2004 } u;
2005 };
2006
2007 /* Looks through a template (if present) to find what it declares. */
2008 #define STRIP_TEMPLATE(NODE) \
2009 (TREE_CODE (NODE) == TEMPLATE_DECL ? DECL_TEMPLATE_RESULT (NODE) : NODE)
2010
2011 #if defined ENABLE_TREE_CHECKING && (GCC_VERSION >= 2007)
2012
2013 #define LANG_DECL_MIN_CHECK(NODE) __extension__ \
2014 ({ struct lang_decl *lt = DECL_LANG_SPECIFIC (NODE); \
2015 if (!LANG_DECL_HAS_MIN (NODE)) \
2016 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
2017 <->u.min; })
2018
2019 /* We want to be able to check DECL_CONSTRUCTOR_P and such on a function
2020 template, not just on a FUNCTION_DECL. So when looking for things in
2021 lang_decl_fn, look down through a TEMPLATE_DECL into its result. */
2022 #define LANG_DECL_FN_CHECK(NODE) __extension__ \
2023 ({ struct lang_decl *lt = DECL_LANG_SPECIFIC (STRIP_TEMPLATE (NODE)); \
2024 if (!DECL_DECLARES_FUNCTION_P (NODE) || lt->u.base.selector != 1) \
2025 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
2026 <->u.fn; })
2027
2028 #define LANG_DECL_NS_CHECK(NODE) __extension__ \
2029 ({ struct lang_decl *lt = DECL_LANG_SPECIFIC (NODE); \
2030 if (TREE_CODE (NODE) != NAMESPACE_DECL || lt->u.base.selector != 2) \
2031 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
2032 <->u.ns; })
2033
2034 #define LANG_DECL_PARM_CHECK(NODE) __extension__ \
2035 ({ struct lang_decl *lt = DECL_LANG_SPECIFIC (NODE); \
2036 if (TREE_CODE (NODE) != PARM_DECL) \
2037 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
2038 <->u.parm; })
2039
2040 #define LANG_DECL_U2_CHECK(NODE, TF) __extension__ \
2041 ({ struct lang_decl *lt = DECL_LANG_SPECIFIC (NODE); \
2042 if (!LANG_DECL_HAS_MIN (NODE) || lt->u.base.u2sel != TF) \
2043 lang_check_failed (__FILE__, __LINE__, __FUNCTION__); \
2044 <->u.min.u2; })
2045
2046 #else
2047
2048 #define LANG_DECL_MIN_CHECK(NODE) \
2049 (&DECL_LANG_SPECIFIC (NODE)->u.min)
2050
2051 #define LANG_DECL_FN_CHECK(NODE) \
2052 (&DECL_LANG_SPECIFIC (STRIP_TEMPLATE (NODE))->u.fn)
2053
2054 #define LANG_DECL_NS_CHECK(NODE) \
2055 (&DECL_LANG_SPECIFIC (NODE)->u.ns)
2056
2057 #define LANG_DECL_PARM_CHECK(NODE) \
2058 (&DECL_LANG_SPECIFIC (NODE)->u.parm)
2059
2060 #define LANG_DECL_U2_CHECK(NODE, TF) \
2061 (&DECL_LANG_SPECIFIC (NODE)->u.min.u2)
2062
2063 #endif /* ENABLE_TREE_CHECKING */
2064
2065 /* For a FUNCTION_DECL or a VAR_DECL, the language linkage for the
2066 declaration. Some entities (like a member function in a local
2067 class, or a local variable) do not have linkage at all, and this
2068 macro should not be used in those cases.
2069
2070 Implementation note: A FUNCTION_DECL without DECL_LANG_SPECIFIC was
2071 created by language-independent code, and has C linkage. Most
2072 VAR_DECLs have C++ linkage, and do not have DECL_LANG_SPECIFIC, but
2073 we do create DECL_LANG_SPECIFIC for variables with non-C++ linkage. */
2074 #define DECL_LANGUAGE(NODE) \
2075 (DECL_LANG_SPECIFIC (NODE) \
2076 ? DECL_LANG_SPECIFIC (NODE)->u.base.language \
2077 : (TREE_CODE (NODE) == FUNCTION_DECL \
2078 ? lang_c : lang_cplusplus))
2079
2080 /* Set the language linkage for NODE to LANGUAGE. */
2081 #define SET_DECL_LANGUAGE(NODE, LANGUAGE) \
2082 (DECL_LANG_SPECIFIC (NODE)->u.base.language = (LANGUAGE))
2083
2084 /* For FUNCTION_DECLs: nonzero means that this function is a constructor. */
2085 #define DECL_CONSTRUCTOR_P(NODE) \
2086 (LANG_DECL_FN_CHECK (NODE)->constructor_attr)
2087
2088 /* Nonzero if NODE (a FUNCTION_DECL) is a constructor for a complete
2089 object. */
2090 #define DECL_COMPLETE_CONSTRUCTOR_P(NODE) \
2091 (DECL_CONSTRUCTOR_P (NODE) \
2092 && DECL_NAME (NODE) == complete_ctor_identifier)
2093
2094 /* Nonzero if NODE (a FUNCTION_DECL) is a constructor for a base
2095 object. */
2096 #define DECL_BASE_CONSTRUCTOR_P(NODE) \
2097 (DECL_CONSTRUCTOR_P (NODE) \
2098 && DECL_NAME (NODE) == base_ctor_identifier)
2099
2100 /* Nonzero if NODE (a FUNCTION_DECL) is a constructor, but not either the
2101 specialized in-charge constructor or the specialized not-in-charge
2102 constructor. */
2103 #define DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P(NODE) \
2104 (DECL_DECLARES_FUNCTION_P (NODE) && DECL_CONSTRUCTOR_P (NODE) \
2105 && !DECL_CLONED_FUNCTION_P (NODE))
2106
2107 /* Nonzero if NODE (a FUNCTION_DECL) is a copy constructor. */
2108 #define DECL_COPY_CONSTRUCTOR_P(NODE) \
2109 (DECL_CONSTRUCTOR_P (NODE) && copy_fn_p (NODE) > 0)
2110
2111 /* Nonzero if NODE (a FUNCTION_DECL) is a move constructor. */
2112 #define DECL_MOVE_CONSTRUCTOR_P(NODE) \
2113 (DECL_CONSTRUCTOR_P (NODE) && move_fn_p (NODE))
2114
2115 /* Nonzero if NODE is a destructor. */
2116 #define DECL_DESTRUCTOR_P(NODE) \
2117 (LANG_DECL_FN_CHECK (NODE)->destructor_attr)
2118
2119 /* Nonzero if NODE (a FUNCTION_DECL) is a destructor, but not the
2120 specialized in-charge constructor, in-charge deleting constructor,
2121 or the base destructor. */
2122 #define DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P(NODE) \
2123 (DECL_DECLARES_FUNCTION_P (NODE) && DECL_DESTRUCTOR_P (NODE) \
2124 && !DECL_CLONED_FUNCTION_P (NODE))
2125
2126 /* Nonzero if NODE (a FUNCTION_DECL) is a destructor for a complete
2127 object. */
2128 #define DECL_COMPLETE_DESTRUCTOR_P(NODE) \
2129 (DECL_DESTRUCTOR_P (NODE) \
2130 && DECL_NAME (NODE) == complete_dtor_identifier)
2131
2132 /* Nonzero if NODE (a FUNCTION_DECL) is a destructor for a base
2133 object. */
2134 #define DECL_BASE_DESTRUCTOR_P(NODE) \
2135 (DECL_DESTRUCTOR_P (NODE) \
2136 && DECL_NAME (NODE) == base_dtor_identifier)
2137
2138 /* Nonzero if NODE (a FUNCTION_DECL) is a destructor for a complete
2139 object that deletes the object after it has been destroyed. */
2140 #define DECL_DELETING_DESTRUCTOR_P(NODE) \
2141 (DECL_DESTRUCTOR_P (NODE) \
2142 && DECL_NAME (NODE) == deleting_dtor_identifier)
2143
2144 /* Nonzero if NODE (a FUNCTION_DECL) is a cloned constructor or
2145 destructor. */
2146 #define DECL_CLONED_FUNCTION_P(NODE) (!!decl_cloned_function_p (NODE, true))
2147
2148 /* If DECL_CLONED_FUNCTION_P holds, this is the function that was
2149 cloned. */
2150 #define DECL_CLONED_FUNCTION(NODE) (*decl_cloned_function_p (NODE, false))
2151
2152 /* Perform an action for each clone of FN, if FN is a function with
2153 clones. This macro should be used like:
2154
2155 FOR_EACH_CLONE (clone, fn)
2156 { ... }
2157
2158 */
2159 #define FOR_EACH_CLONE(CLONE, FN) \
2160 if (TREE_CODE (FN) == FUNCTION_DECL \
2161 && (DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P (FN) \
2162 || DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P (FN))) \
2163 for (CLONE = DECL_CHAIN (FN); \
2164 CLONE && DECL_CLONED_FUNCTION_P (CLONE); \
2165 CLONE = DECL_CHAIN (CLONE))
2166
2167 /* Nonzero if NODE has DECL_DISCRIMINATOR and not DECL_ACCESS. */
2168 #define DECL_DISCRIMINATOR_P(NODE) \
2169 (TREE_CODE (NODE) == VAR_DECL \
2170 && DECL_FUNCTION_SCOPE_P (NODE))
2171
2172 /* Discriminator for name mangling. */
2173 #define DECL_DISCRIMINATOR(NODE) (LANG_DECL_U2_CHECK (NODE, 1)->discriminator)
2174
2175 /* True iff DECL_DISCRIMINATOR is set for a DECL_DISCRIMINATOR_P decl. */
2176 #define DECL_DISCRIMINATOR_SET_P(NODE) \
2177 (DECL_LANG_SPECIFIC (NODE) && DECL_LANG_SPECIFIC (NODE)->u.base.u2sel == 1)
2178
2179 /* The index of a user-declared parameter in its function, starting at 1.
2180 All artificial parameters will have index 0. */
2181 #define DECL_PARM_INDEX(NODE) \
2182 (LANG_DECL_PARM_CHECK (NODE)->index)
2183
2184 /* The level of a user-declared parameter in its function, starting at 1.
2185 A parameter of the function will have level 1; a parameter of the first
2186 nested function declarator (i.e. t in void f (void (*p)(T t))) will have
2187 level 2. */
2188 #define DECL_PARM_LEVEL(NODE) \
2189 (LANG_DECL_PARM_CHECK (NODE)->level)
2190
2191 /* Nonzero if the VTT parm has been added to NODE. */
2192 #define DECL_HAS_VTT_PARM_P(NODE) \
2193 (LANG_DECL_FN_CHECK (NODE)->has_vtt_parm_p)
2194
2195 /* Nonzero if NODE is a FUNCTION_DECL for which a VTT parameter is
2196 required. */
2197 #define DECL_NEEDS_VTT_PARM_P(NODE) \
2198 (CLASSTYPE_VBASECLASSES (DECL_CONTEXT (NODE)) \
2199 && (DECL_BASE_CONSTRUCTOR_P (NODE) \
2200 || DECL_BASE_DESTRUCTOR_P (NODE)))
2201
2202 /* Nonzero if NODE is a user-defined conversion operator. */
2203 #define DECL_CONV_FN_P(NODE) \
2204 (DECL_NAME (NODE) && IDENTIFIER_TYPENAME_P (DECL_NAME (NODE)))
2205
2206 /* If FN is a conversion operator, the type to which it converts.
2207 Otherwise, NULL_TREE. */
2208 #define DECL_CONV_FN_TYPE(FN) \
2209 (DECL_CONV_FN_P (FN) ? TREE_TYPE (DECL_NAME (FN)) : NULL_TREE)
2210
2211 /* Nonzero if NODE, which is a TEMPLATE_DECL, is a template
2212 conversion operator to a type dependent on the innermost template
2213 args. */
2214 #define DECL_TEMPLATE_CONV_FN_P(NODE) \
2215 (DECL_LANG_SPECIFIC (TEMPLATE_DECL_CHECK (NODE))->u.base.template_conv_p)
2216
2217 /* Nonzero if NODE, a static data member, was declared in its class as an
2218 array of unknown bound. */
2219 #define VAR_HAD_UNKNOWN_BOUND(NODE) \
2220 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE)) \
2221 ? DECL_LANG_SPECIFIC (NODE)->u.base.template_conv_p \
2222 : false)
2223 #define SET_VAR_HAD_UNKNOWN_BOUND(NODE) \
2224 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (NODE))->u.base.template_conv_p = true)
2225
2226 /* Set the overloaded operator code for NODE to CODE. */
2227 #define SET_OVERLOADED_OPERATOR_CODE(NODE, CODE) \
2228 (LANG_DECL_FN_CHECK (NODE)->operator_code = (CODE))
2229
2230 /* If NODE is an overloaded operator, then this returns the TREE_CODE
2231 associated with the overloaded operator.
2232 DECL_ASSIGNMENT_OPERATOR_P must also be checked to determine
2233 whether or not NODE is an assignment operator. If NODE is not an
2234 overloaded operator, ERROR_MARK is returned. Since the numerical
2235 value of ERROR_MARK is zero, this macro can be used as a predicate
2236 to test whether or not NODE is an overloaded operator. */
2237 #define DECL_OVERLOADED_OPERATOR_P(NODE) \
2238 (IDENTIFIER_OPNAME_P (DECL_NAME (NODE)) \
2239 ? LANG_DECL_FN_CHECK (NODE)->operator_code : ERROR_MARK)
2240
2241 /* Nonzero if NODE is an assignment operator (including += and such). */
2242 #define DECL_ASSIGNMENT_OPERATOR_P(NODE) \
2243 (LANG_DECL_FN_CHECK (NODE)->assignment_operator_p)
2244
2245 /* For FUNCTION_DECLs: nonzero means that this function is a
2246 constructor or a destructor with an extra in-charge parameter to
2247 control whether or not virtual bases are constructed. */
2248 #define DECL_HAS_IN_CHARGE_PARM_P(NODE) \
2249 (LANG_DECL_FN_CHECK (NODE)->has_in_charge_parm_p)
2250
2251 /* Nonzero if DECL is a declaration of __builtin_constant_p. */
2252 #define DECL_IS_BUILTIN_CONSTANT_P(NODE) \
2253 (TREE_CODE (NODE) == FUNCTION_DECL \
2254 && DECL_BUILT_IN_CLASS (NODE) == BUILT_IN_NORMAL \
2255 && DECL_FUNCTION_CODE (NODE) == BUILT_IN_CONSTANT_P)
2256
2257 /* Nonzero for _DECL means that this decl appears in (or will appear
2258 in) as a member in a RECORD_TYPE or UNION_TYPE node. It is also for
2259 detecting circularity in case members are multiply defined. In the
2260 case of a VAR_DECL, it is also used to determine how program storage
2261 should be allocated. */
2262 #define DECL_IN_AGGR_P(NODE) (DECL_LANG_FLAG_3 (NODE))
2263
2264 /* Nonzero for a VAR_DECL means that the variable's initialization (if
2265 any) has been processed. (In general, DECL_INITIALIZED_P is
2266 !DECL_EXTERN, but static data members may be initialized even if
2267 not defined.) */
2268 #define DECL_INITIALIZED_P(NODE) \
2269 (TREE_LANG_FLAG_1 (VAR_DECL_CHECK (NODE)))
2270
2271 /* Nonzero for a VAR_DECL iff an explicit initializer was provided. */
2272 #define DECL_NONTRIVIALLY_INITIALIZED_P(NODE) \
2273 (TREE_LANG_FLAG_3 (VAR_DECL_CHECK (NODE)))
2274
2275 /* Nonzero for a VAR_DECL that was initialized with a
2276 constant-expression. */
2277 #define DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P(NODE) \
2278 (TREE_LANG_FLAG_2 (VAR_DECL_CHECK (NODE)))
2279
2280 /* Nonzero if the DECL was initialized in the class definition itself,
2281 rather than outside the class. This is used for both static member
2282 VAR_DECLS, and FUNCTION_DECLS that are defined in the class. */
2283 #define DECL_INITIALIZED_IN_CLASS_P(DECL) \
2284 (DECL_LANG_SPECIFIC (VAR_OR_FUNCTION_DECL_CHECK (DECL)) \
2285 ->u.base.initialized_in_class)
2286
2287 /* Nonzero if the DECL is used in the sense of 3.2 [basic.def.odr].
2288 Only available for decls with DECL_LANG_SPECIFIC. */
2289 #define DECL_ODR_USED(DECL) \
2290 (DECL_LANG_SPECIFIC (VAR_OR_FUNCTION_DECL_CHECK (DECL)) \
2291 ->u.base.odr_used)
2292
2293 /* Nonzero for DECL means that this decl is just a friend declaration,
2294 and should not be added to the list of members for this class. */
2295 #define DECL_FRIEND_P(NODE) (DECL_LANG_SPECIFIC (NODE)->u.base.friend_attr)
2296
2297 /* A TREE_LIST of the types which have befriended this FUNCTION_DECL. */
2298 #define DECL_BEFRIENDING_CLASSES(NODE) \
2299 (LANG_DECL_FN_CHECK (NODE)->befriending_classes)
2300
2301 /* Nonzero for FUNCTION_DECL means that this decl is a static
2302 member function. */
2303 #define DECL_STATIC_FUNCTION_P(NODE) \
2304 (LANG_DECL_FN_CHECK (NODE)->static_function)
2305
2306 /* Nonzero for FUNCTION_DECL means that this decl is a non-static
2307 member function. */
2308 #define DECL_NONSTATIC_MEMBER_FUNCTION_P(NODE) \
2309 (TREE_CODE (TREE_TYPE (NODE)) == METHOD_TYPE)
2310
2311 /* Nonzero for FUNCTION_DECL means that this decl is a member function
2312 (static or non-static). */
2313 #define DECL_FUNCTION_MEMBER_P(NODE) \
2314 (DECL_NONSTATIC_MEMBER_FUNCTION_P (NODE) || DECL_STATIC_FUNCTION_P (NODE))
2315
2316 /* Nonzero for FUNCTION_DECL means that this member function
2317 has `this' as const X *const. */
2318 #define DECL_CONST_MEMFUNC_P(NODE) \
2319 (DECL_NONSTATIC_MEMBER_FUNCTION_P (NODE) \
2320 && CP_TYPE_CONST_P (TREE_TYPE (TREE_VALUE \
2321 (TYPE_ARG_TYPES (TREE_TYPE (NODE))))))
2322
2323 /* Nonzero for FUNCTION_DECL means that this member function
2324 has `this' as volatile X *const. */
2325 #define DECL_VOLATILE_MEMFUNC_P(NODE) \
2326 (DECL_NONSTATIC_MEMBER_FUNCTION_P (NODE) \
2327 && CP_TYPE_VOLATILE_P (TREE_TYPE (TREE_VALUE \
2328 (TYPE_ARG_TYPES (TREE_TYPE (NODE))))))
2329
2330 /* Nonzero for a DECL means that this member is a non-static member. */
2331 #define DECL_NONSTATIC_MEMBER_P(NODE) \
2332 (DECL_NONSTATIC_MEMBER_FUNCTION_P (NODE) \
2333 || TREE_CODE (NODE) == FIELD_DECL)
2334
2335 /* Nonzero for _DECL means that this member object type
2336 is mutable. */
2337 #define DECL_MUTABLE_P(NODE) (DECL_LANG_FLAG_0 (NODE))
2338
2339 /* Nonzero for _DECL means that this constructor or conversion function is
2340 non-converting. */
2341 #define DECL_NONCONVERTING_P(NODE) \
2342 (LANG_DECL_FN_CHECK (NODE)->nonconverting)
2343
2344 /* Nonzero for FUNCTION_DECL means that this member function is a pure
2345 virtual function. */
2346 #define DECL_PURE_VIRTUAL_P(NODE) \
2347 (LANG_DECL_FN_CHECK (NODE)->pure_virtual)
2348
2349 /* True (in a FUNCTION_DECL) if NODE is a virtual function that is an
2350 invalid overrider for a function from a base class. Once we have
2351 complained about an invalid overrider we avoid complaining about it
2352 again. */
2353 #define DECL_INVALID_OVERRIDER_P(NODE) \
2354 (DECL_LANG_FLAG_4 (NODE))
2355
2356 /* True (in a FUNCTION_DECL) if NODE is a function declared with
2357 an override virt-specifier */
2358 #define DECL_OVERRIDE_P(NODE) (TREE_LANG_FLAG_0 (NODE))
2359
2360 /* True (in a FUNCTION_DECL) if NODE is a function declared with
2361 a final virt-specifier */
2362 #define DECL_FINAL_P(NODE) (TREE_LANG_FLAG_1 (NODE))
2363
2364 /* The thunks associated with NODE, a FUNCTION_DECL. */
2365 #define DECL_THUNKS(NODE) \
2366 (LANG_DECL_FN_CHECK (NODE)->context)
2367
2368 /* Nonzero if NODE is a thunk, rather than an ordinary function. */
2369 #define DECL_THUNK_P(NODE) \
2370 (TREE_CODE (NODE) == FUNCTION_DECL \
2371 && DECL_LANG_SPECIFIC (NODE) \
2372 && LANG_DECL_FN_CHECK (NODE)->thunk_p)
2373
2374 /* Set DECL_THUNK_P for node. */
2375 #define SET_DECL_THUNK_P(NODE, THIS_ADJUSTING) \
2376 (LANG_DECL_FN_CHECK (NODE)->thunk_p = 1, \
2377 LANG_DECL_FN_CHECK (NODE)->this_thunk_p = (THIS_ADJUSTING))
2378
2379 /* Nonzero if NODE is a this pointer adjusting thunk. */
2380 #define DECL_THIS_THUNK_P(NODE) \
2381 (DECL_THUNK_P (NODE) && LANG_DECL_FN_CHECK (NODE)->this_thunk_p)
2382
2383 /* Nonzero if NODE is a result pointer adjusting thunk. */
2384 #define DECL_RESULT_THUNK_P(NODE) \
2385 (DECL_THUNK_P (NODE) && !LANG_DECL_FN_CHECK (NODE)->this_thunk_p)
2386
2387 /* Nonzero if NODE is a FUNCTION_DECL, but not a thunk. */
2388 #define DECL_NON_THUNK_FUNCTION_P(NODE) \
2389 (TREE_CODE (NODE) == FUNCTION_DECL && !DECL_THUNK_P (NODE))
2390
2391 /* Nonzero if NODE is `extern "C"'. */
2392 #define DECL_EXTERN_C_P(NODE) \
2393 (DECL_LANGUAGE (NODE) == lang_c)
2394
2395 /* Nonzero if NODE is an `extern "C"' function. */
2396 #define DECL_EXTERN_C_FUNCTION_P(NODE) \
2397 (DECL_NON_THUNK_FUNCTION_P (NODE) && DECL_EXTERN_C_P (NODE))
2398
2399 /* True iff DECL is an entity with vague linkage whose definition is
2400 available in this translation unit. */
2401 #define DECL_REPO_AVAILABLE_P(NODE) \
2402 (DECL_LANG_SPECIFIC (NODE)->u.base.repo_available_p)
2403
2404 /* True if DECL is declared 'constexpr'. */
2405 #define DECL_DECLARED_CONSTEXPR_P(DECL) \
2406 DECL_LANG_FLAG_8 (VAR_OR_FUNCTION_DECL_CHECK (STRIP_TEMPLATE (DECL)))
2407
2408 /* Nonzero if this DECL is the __PRETTY_FUNCTION__ variable in a
2409 template function. */
2410 #define DECL_PRETTY_FUNCTION_P(NODE) \
2411 (TREE_LANG_FLAG_0 (VAR_DECL_CHECK (NODE)))
2412
2413 /* The _TYPE context in which this _DECL appears. This field holds the
2414 class where a virtual function instance is actually defined. */
2415 #define DECL_CLASS_CONTEXT(NODE) \
2416 (DECL_CLASS_SCOPE_P (NODE) ? DECL_CONTEXT (NODE) : NULL_TREE)
2417
2418 /* For a non-member friend function, the class (if any) in which this
2419 friend was defined. For example, given:
2420
2421 struct S { friend void f (); };
2422
2423 the DECL_FRIEND_CONTEXT for `f' will be `S'. */
2424 #define DECL_FRIEND_CONTEXT(NODE) \
2425 ((DECL_DECLARES_FUNCTION_P (NODE) \
2426 && DECL_FRIEND_P (NODE) && !DECL_FUNCTION_MEMBER_P (NODE)) \
2427 ? LANG_DECL_FN_CHECK (NODE)->context \
2428 : NULL_TREE)
2429
2430 /* Set the DECL_FRIEND_CONTEXT for NODE to CONTEXT. */
2431 #define SET_DECL_FRIEND_CONTEXT(NODE, CONTEXT) \
2432 (LANG_DECL_FN_CHECK (NODE)->context = (CONTEXT))
2433
2434 #define CP_DECL_CONTEXT(NODE) \
2435 (!DECL_FILE_SCOPE_P (NODE) ? DECL_CONTEXT (NODE) : global_namespace)
2436 #define CP_TYPE_CONTEXT(NODE) \
2437 (!TYPE_FILE_SCOPE_P (NODE) ? TYPE_CONTEXT (NODE) : global_namespace)
2438 #define FROB_CONTEXT(NODE) \
2439 ((NODE) == global_namespace ? DECL_CONTEXT (NODE) : (NODE))
2440
2441 /* 1 iff NODE has namespace scope, including the global namespace. */
2442 #define DECL_NAMESPACE_SCOPE_P(NODE) \
2443 (!DECL_TEMPLATE_PARM_P (NODE) \
2444 && TREE_CODE (CP_DECL_CONTEXT (NODE)) == NAMESPACE_DECL)
2445
2446 #define TYPE_NAMESPACE_SCOPE_P(NODE) \
2447 (TREE_CODE (CP_TYPE_CONTEXT (NODE)) == NAMESPACE_DECL)
2448
2449 #define NAMESPACE_SCOPE_P(NODE) \
2450 ((DECL_P (NODE) && DECL_NAMESPACE_SCOPE_P (NODE)) \
2451 || (TYPE_P (NODE) && TYPE_NAMESPACE_SCOPE_P (NODE)))
2452
2453 /* 1 iff NODE is a class member. */
2454 #define DECL_CLASS_SCOPE_P(NODE) \
2455 (DECL_CONTEXT (NODE) && TYPE_P (DECL_CONTEXT (NODE)))
2456
2457 #define TYPE_CLASS_SCOPE_P(NODE) \
2458 (TYPE_CONTEXT (NODE) && TYPE_P (TYPE_CONTEXT (NODE)))
2459
2460 /* 1 iff NODE is function-local. */
2461 #define DECL_FUNCTION_SCOPE_P(NODE) \
2462 (DECL_CONTEXT (NODE) \
2463 && TREE_CODE (DECL_CONTEXT (NODE)) == FUNCTION_DECL)
2464
2465 #define TYPE_FUNCTION_SCOPE_P(NODE) \
2466 (TYPE_CONTEXT (NODE) && TREE_CODE (TYPE_CONTEXT (NODE)) == FUNCTION_DECL)
2467
2468 /* 1 iff VAR_DECL node NODE is a type-info decl. This flag is set for
2469 both the primary typeinfo object and the associated NTBS name. */
2470 #define DECL_TINFO_P(NODE) TREE_LANG_FLAG_4 (VAR_DECL_CHECK (NODE))
2471
2472 /* 1 iff VAR_DECL node NODE is virtual table or VTT. */
2473 #define DECL_VTABLE_OR_VTT_P(NODE) TREE_LANG_FLAG_5 (VAR_DECL_CHECK (NODE))
2474
2475 /* Returns 1 iff VAR_DECL is a construction virtual table.
2476 DECL_VTABLE_OR_VTT_P will be true in this case and must be checked
2477 before using this macro. */
2478 #define DECL_CONSTRUCTION_VTABLE_P(NODE) \
2479 TREE_LANG_FLAG_6 (VAR_DECL_CHECK (NODE))
2480
2481 /* 1 iff NODE is function-local, but for types. */
2482 #define LOCAL_CLASS_P(NODE) \
2483 (decl_function_context (TYPE_MAIN_DECL (NODE)) != NULL_TREE)
2484
2485 /* For a NAMESPACE_DECL: the list of using namespace directives
2486 The PURPOSE is the used namespace, the value is the namespace
2487 that is the common ancestor. */
2488 #define DECL_NAMESPACE_USING(NODE) DECL_VINDEX (NAMESPACE_DECL_CHECK (NODE))
2489
2490 /* In a NAMESPACE_DECL, the DECL_INITIAL is used to record all users
2491 of a namespace, to record the transitive closure of using namespace. */
2492 #define DECL_NAMESPACE_USERS(NODE) DECL_INITIAL (NAMESPACE_DECL_CHECK (NODE))
2493
2494 /* In a NAMESPACE_DECL, the list of namespaces which have associated
2495 themselves with this one. */
2496 #define DECL_NAMESPACE_ASSOCIATIONS(NODE) \
2497 (NAMESPACE_DECL_CHECK (NODE)->decl_non_common.saved_tree)
2498
2499 /* In a NAMESPACE_DECL, points to the original namespace if this is
2500 a namespace alias. */
2501 #define DECL_NAMESPACE_ALIAS(NODE) \
2502 DECL_ABSTRACT_ORIGIN (NAMESPACE_DECL_CHECK (NODE))
2503 #define ORIGINAL_NAMESPACE(NODE) \
2504 (DECL_NAMESPACE_ALIAS (NODE) ? DECL_NAMESPACE_ALIAS (NODE) : (NODE))
2505
2506 /* Nonzero if NODE is the std namespace. */
2507 #define DECL_NAMESPACE_STD_P(NODE) \
2508 (TREE_CODE (NODE) == NAMESPACE_DECL \
2509 && CP_DECL_CONTEXT (NODE) == global_namespace \
2510 && DECL_NAME (NODE) == std_identifier)
2511
2512 /* In a TREE_LIST concatenating using directives, indicate indirect
2513 directives */
2514 #define TREE_INDIRECT_USING(NODE) (TREE_LIST_CHECK (NODE)->base.lang_flag_0)
2515
2516 /* In a TREE_LIST in an attribute list, indicates that the attribute
2517 must be applied at instantiation time. */
2518 #define ATTR_IS_DEPENDENT(NODE) (TREE_LIST_CHECK (NODE)->base.lang_flag_0)
2519
2520 extern tree decl_shadowed_for_var_lookup (tree);
2521 extern void decl_shadowed_for_var_insert (tree, tree);
2522
2523 /* Non zero if this is a using decl for a dependent scope. */
2524 #define DECL_DEPENDENT_P(NODE) DECL_LANG_FLAG_0 (USING_DECL_CHECK (NODE))
2525
2526 /* The scope named in a using decl. */
2527 #define USING_DECL_SCOPE(NODE) TREE_TYPE (USING_DECL_CHECK (NODE))
2528
2529 /* The decls named by a using decl. */
2530 #define USING_DECL_DECLS(NODE) DECL_INITIAL (USING_DECL_CHECK (NODE))
2531
2532 /* Non zero if the using decl refers to a dependent type. */
2533 #define USING_DECL_TYPENAME_P(NODE) DECL_LANG_FLAG_1 (USING_DECL_CHECK (NODE))
2534
2535 /* In a VAR_DECL, true if we have a shadowed local variable
2536 in the shadowed var table for this VAR_DECL. */
2537 #define DECL_HAS_SHADOWED_FOR_VAR_P(NODE) \
2538 (VAR_DECL_CHECK (NODE)->decl_with_vis.shadowed_for_var_p)
2539
2540 /* In a VAR_DECL for a variable declared in a for statement,
2541 this is the shadowed (local) variable. */
2542 #define DECL_SHADOWED_FOR_VAR(NODE) \
2543 (DECL_HAS_SHADOWED_FOR_VAR_P(NODE) ? decl_shadowed_for_var_lookup (NODE) : NULL)
2544
2545 #define SET_DECL_SHADOWED_FOR_VAR(NODE, VAL) \
2546 (decl_shadowed_for_var_insert (NODE, VAL))
2547
2548 /* In a FUNCTION_DECL, this is nonzero if this function was defined in
2549 the class definition. We have saved away the text of the function,
2550 but have not yet processed it. */
2551 #define DECL_PENDING_INLINE_P(NODE) \
2552 (LANG_DECL_FN_CHECK (NODE)->pending_inline_p)
2553
2554 /* If DECL_PENDING_INLINE_P holds, this is the saved text of the
2555 function. */
2556 #define DECL_PENDING_INLINE_INFO(NODE) \
2557 (LANG_DECL_FN_CHECK (NODE)->u.pending_inline_info)
2558
2559 /* Nonzero for TYPE_DECL means that it was written 'using name = type'. */
2560 #define TYPE_DECL_ALIAS_P(NODE) \
2561 DECL_LANG_FLAG_6 (TYPE_DECL_CHECK (NODE))
2562
2563 /* Nonzero for a type which is an alias for another type; i.e, a type
2564 which declaration was written 'using name-of-type =
2565 another-type'. */
2566 #define TYPE_ALIAS_P(NODE) \
2567 (TYPE_P (NODE) \
2568 && TYPE_NAME (NODE) \
2569 && TREE_CODE (TYPE_NAME (NODE)) == TYPE_DECL \
2570 && TYPE_DECL_ALIAS_P (TYPE_NAME (NODE)))
2571
2572 /* For a class type: if this structure has many fields, we'll sort them
2573 and put them into a TREE_VEC. */
2574 #define CLASSTYPE_SORTED_FIELDS(NODE) \
2575 (LANG_TYPE_CLASS_CHECK (NODE)->sorted_fields)
2576
2577 /* If non-NULL for a VAR_DECL, FUNCTION_DECL, TYPE_DECL or
2578 TEMPLATE_DECL, the entity is either a template specialization (if
2579 DECL_USE_TEMPLATE is nonzero) or the abstract instance of the
2580 template itself.
2581
2582 In either case, DECL_TEMPLATE_INFO is a TREE_LIST, whose
2583 TREE_PURPOSE is the TEMPLATE_DECL of which this entity is a
2584 specialization or abstract instance. The TREE_VALUE is the
2585 template arguments used to specialize the template.
2586
2587 Consider:
2588
2589 template <typename T> struct S { friend void f(T) {} };
2590
2591 In this case, S<int>::f is, from the point of view of the compiler,
2592 an instantiation of a template -- but, from the point of view of
2593 the language, each instantiation of S results in a wholly unrelated
2594 global function f. In this case, DECL_TEMPLATE_INFO for S<int>::f
2595 will be non-NULL, but DECL_USE_TEMPLATE will be zero. */
2596 #define DECL_TEMPLATE_INFO(NODE) \
2597 (DECL_LANG_SPECIFIC (VAR_TEMPL_TYPE_FIELD_OR_FUNCTION_DECL_CHECK (NODE)) \
2598 ->u.min.template_info)
2599
2600 /* For a VAR_DECL, indicates that the variable is actually a
2601 non-static data member of anonymous union that has been promoted to
2602 variable status. */
2603 #define DECL_ANON_UNION_VAR_P(NODE) \
2604 (DECL_LANG_FLAG_4 (VAR_DECL_CHECK (NODE)))
2605
2606 /* Template information for a RECORD_TYPE or UNION_TYPE. */
2607 #define CLASSTYPE_TEMPLATE_INFO(NODE) \
2608 (LANG_TYPE_CLASS_CHECK (RECORD_OR_UNION_CHECK (NODE))->template_info)
2609
2610 /* Template information for an ENUMERAL_TYPE. Although an enumeration may
2611 not be a primary template, it may be declared within the scope of a
2612 primary template and the enumeration constants may depend on
2613 non-type template parameters. */
2614 #define ENUM_TEMPLATE_INFO(NODE) \
2615 (TYPE_LANG_SLOT_1 (ENUMERAL_TYPE_CHECK (NODE)))
2616
2617 /* Template information for a template template parameter. */
2618 #define TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO(NODE) \
2619 (LANG_TYPE_CLASS_CHECK (BOUND_TEMPLATE_TEMPLATE_PARM_TYPE_CHECK (NODE)) \
2620 ->template_info)
2621
2622 /* Template information for an ENUMERAL_, RECORD_, UNION_TYPE, or
2623 BOUND_TEMPLATE_TEMPLATE_PARM type. Note that if NODE is a
2624 specialization of an alias template, this accessor returns the
2625 template info for the alias template, not the one (if any) for the
2626 template of the underlying type. */
2627 #define TYPE_TEMPLATE_INFO(NODE) \
2628 (TYPE_ALIAS_P (NODE) \
2629 ? ((TYPE_NAME (NODE) && DECL_LANG_SPECIFIC (TYPE_NAME (NODE))) \
2630 ? DECL_TEMPLATE_INFO (TYPE_NAME (NODE)) \
2631 : NULL_TREE) \
2632 : ((TREE_CODE (NODE) == ENUMERAL_TYPE) \
2633 ? ENUM_TEMPLATE_INFO (NODE) \
2634 : ((TREE_CODE (NODE) == BOUND_TEMPLATE_TEMPLATE_PARM) \
2635 ? TEMPLATE_TEMPLATE_PARM_TEMPLATE_INFO (NODE) \
2636 : (CLASS_TYPE_P (NODE) \
2637 ? CLASSTYPE_TEMPLATE_INFO (NODE) \
2638 : NULL_TREE))))
2639
2640
2641 /* Set the template information for an ENUMERAL_, RECORD_, or
2642 UNION_TYPE to VAL. */
2643 #define SET_TYPE_TEMPLATE_INFO(NODE, VAL) \
2644 (TREE_CODE (NODE) == ENUMERAL_TYPE \
2645 ? (ENUM_TEMPLATE_INFO (NODE) = (VAL)) \
2646 : ((CLASS_TYPE_P (NODE) && !TYPE_ALIAS_P (NODE)) \
2647 ? (CLASSTYPE_TEMPLATE_INFO (NODE) = (VAL)) \
2648 : (DECL_TEMPLATE_INFO (TYPE_NAME (NODE)) = (VAL))))
2649
2650 #define TI_TEMPLATE(NODE) TREE_TYPE (TEMPLATE_INFO_CHECK (NODE))
2651 #define TI_ARGS(NODE) TREE_CHAIN (TEMPLATE_INFO_CHECK (NODE))
2652 #define TI_PENDING_TEMPLATE_FLAG(NODE) TREE_LANG_FLAG_1 (NODE)
2653 /* For a given TREE_VEC containing a template argument list,
2654 this property contains the number of arguments that are not
2655 defaulted. */
2656 #define NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE) TREE_CHAIN (TREE_VEC_CHECK (NODE))
2657 /* Below are the setter and getter of the NON_DEFAULT_TEMPLATE_ARGS_COUNT
2658 property. */
2659 #define SET_NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE, INT_VALUE) \
2660 NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE) = build_int_cst (NULL_TREE, INT_VALUE)
2661 #ifdef ENABLE_CHECKING
2662 #define GET_NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE) \
2663 int_cst_value (NON_DEFAULT_TEMPLATE_ARGS_COUNT (NODE))
2664 #else
2665 #define GET_NON_DEFAULT_TEMPLATE_ARGS_COUNT(NODE) \
2666 NON_DEFAULT_TEMPLATE_ARGS_COUNT (NODE) \
2667 ? int_cst_value (NON_DEFAULT_TEMPLATE_ARGS_COUNT (NODE)) \
2668 : TREE_VEC_LENGTH (INNERMOST_TEMPLATE_ARGS (NODE))
2669 #endif
2670 /* The list of typedefs - used in the template - that need
2671 access checking at template instantiation time. */
2672 #define TI_TYPEDEFS_NEEDING_ACCESS_CHECKING(NODE) \
2673 ((struct tree_template_info*)TEMPLATE_INFO_CHECK \
2674 (NODE))->typedefs_needing_access_checking
2675
2676 /* We use TREE_VECs to hold template arguments. If there is only one
2677 level of template arguments, then the TREE_VEC contains the
2678 arguments directly. If there is more than one level of template
2679 arguments, then each entry in the TREE_VEC is itself a TREE_VEC,
2680 containing the template arguments for a single level. The first
2681 entry in the outer TREE_VEC is the outermost level of template
2682 parameters; the last is the innermost.
2683
2684 It is incorrect to ever form a template argument vector containing
2685 only one level of arguments, but which is a TREE_VEC containing as
2686 its only entry the TREE_VEC for that level.
2687
2688 For each TREE_VEC containing the template arguments for a single
2689 level, it's possible to get or set the number of non defaulted
2690 template arguments by using the accessor macros
2691 GET_NON_DEFAULT_TEMPLATE_ARGS_COUNT or
2692 SET_NON_DEFAULT_TEMPLATE_ARGS_COUNT. */
2693
2694 /* Nonzero if the template arguments is actually a vector of vectors,
2695 rather than just a vector. */
2696 #define TMPL_ARGS_HAVE_MULTIPLE_LEVELS(NODE) \
2697 (NODE && TREE_VEC_LENGTH (NODE) && TREE_VEC_ELT (NODE, 0) \
2698 && TREE_CODE (TREE_VEC_ELT (NODE, 0)) == TREE_VEC)
2699
2700 /* The depth of a template argument vector. When called directly by
2701 the parser, we use a TREE_LIST rather than a TREE_VEC to represent
2702 template arguments. In fact, we may even see NULL_TREE if there
2703 are no template arguments. In both of those cases, there is only
2704 one level of template arguments. */
2705 #define TMPL_ARGS_DEPTH(NODE) \
2706 (TMPL_ARGS_HAVE_MULTIPLE_LEVELS (NODE) ? TREE_VEC_LENGTH (NODE) : 1)
2707
2708 /* The LEVELth level of the template ARGS. The outermost level of
2709 args is level 1, not level 0. */
2710 #define TMPL_ARGS_LEVEL(ARGS, LEVEL) \
2711 (TMPL_ARGS_HAVE_MULTIPLE_LEVELS (ARGS) \
2712 ? TREE_VEC_ELT (ARGS, (LEVEL) - 1) : (ARGS))
2713
2714 /* Set the LEVELth level of the template ARGS to VAL. This macro does
2715 not work with single-level argument vectors. */
2716 #define SET_TMPL_ARGS_LEVEL(ARGS, LEVEL, VAL) \
2717 (TREE_VEC_ELT (ARGS, (LEVEL) - 1) = (VAL))
2718
2719 /* Accesses the IDXth parameter in the LEVELth level of the ARGS. */
2720 #define TMPL_ARG(ARGS, LEVEL, IDX) \
2721 (TREE_VEC_ELT (TMPL_ARGS_LEVEL (ARGS, LEVEL), IDX))
2722
2723 /* Given a single level of template arguments in NODE, return the
2724 number of arguments. */
2725 #define NUM_TMPL_ARGS(NODE) \
2726 (TREE_VEC_LENGTH (NODE))
2727
2728 /* Returns the innermost level of template arguments in ARGS. */
2729 #define INNERMOST_TEMPLATE_ARGS(NODE) \
2730 (get_innermost_template_args ((NODE), 1))
2731
2732 /* The number of levels of template parameters given by NODE. */
2733 #define TMPL_PARMS_DEPTH(NODE) \
2734 ((HOST_WIDE_INT) TREE_INT_CST_LOW (TREE_PURPOSE (NODE)))
2735
2736 /* The TEMPLATE_DECL instantiated or specialized by NODE. This
2737 TEMPLATE_DECL will be the immediate parent, not the most general
2738 template. For example, in:
2739
2740 template <class T> struct S { template <class U> void f(U); }
2741
2742 the FUNCTION_DECL for S<int>::f<double> will have, as its
2743 DECL_TI_TEMPLATE, `template <class U> S<int>::f<U>'.
2744
2745 As a special case, for a member friend template of a template
2746 class, this value will not be a TEMPLATE_DECL, but rather an
2747 IDENTIFIER_NODE or OVERLOAD indicating the name of the template and
2748 any explicit template arguments provided. For example, in:
2749
2750 template <class T> struct S { friend void f<int>(int, double); }
2751
2752 the DECL_TI_TEMPLATE will be an IDENTIFIER_NODE for `f' and the
2753 DECL_TI_ARGS will be {int}.
2754
2755 For a FIELD_DECL with a non-static data member initializer, this value
2756 is the FIELD_DECL it was instantiated from. */
2757 #define DECL_TI_TEMPLATE(NODE) TI_TEMPLATE (DECL_TEMPLATE_INFO (NODE))
2758
2759 /* The template arguments used to obtain this decl from the most
2760 general form of DECL_TI_TEMPLATE. For the example given for
2761 DECL_TI_TEMPLATE, the DECL_TI_ARGS will be {int, double}. These
2762 are always the full set of arguments required to instantiate this
2763 declaration from the most general template specialized here. */
2764 #define DECL_TI_ARGS(NODE) TI_ARGS (DECL_TEMPLATE_INFO (NODE))
2765
2766 /* The TEMPLATE_DECL associated with NODE, a class type. Even if NODE
2767 will be generated from a partial specialization, the TEMPLATE_DECL
2768 referred to here will be the original template. For example,
2769 given:
2770
2771 template <typename T> struct S {};
2772 template <typename T> struct S<T*> {};
2773
2774 the CLASSTPYE_TI_TEMPLATE for S<int*> will be S, not the S<T*>. */
2775 #define CLASSTYPE_TI_TEMPLATE(NODE) TI_TEMPLATE (CLASSTYPE_TEMPLATE_INFO (NODE))
2776 #define CLASSTYPE_TI_ARGS(NODE) TI_ARGS (CLASSTYPE_TEMPLATE_INFO (NODE))
2777
2778 /* For a template instantiation TYPE, returns the TYPE corresponding
2779 to the primary template. Otherwise returns TYPE itself. */
2780 #define CLASSTYPE_PRIMARY_TEMPLATE_TYPE(TYPE) \
2781 ((CLASSTYPE_USE_TEMPLATE ((TYPE)) \
2782 && !CLASSTYPE_TEMPLATE_SPECIALIZATION ((TYPE))) \
2783 ? TREE_TYPE (DECL_TEMPLATE_RESULT (DECL_PRIMARY_TEMPLATE \
2784 (CLASSTYPE_TI_TEMPLATE ((TYPE))))) \
2785 : (TYPE))
2786
2787 /* Like CLASS_TI_TEMPLATE, but also works for ENUMERAL_TYPEs. */
2788 #define TYPE_TI_TEMPLATE(NODE) \
2789 (TI_TEMPLATE (TYPE_TEMPLATE_INFO (NODE)))
2790
2791 /* Like DECL_TI_ARGS, but for an ENUMERAL_, RECORD_, or UNION_TYPE. */
2792 #define TYPE_TI_ARGS(NODE) \
2793 (TI_ARGS (TYPE_TEMPLATE_INFO (NODE)))
2794
2795 #define INNERMOST_TEMPLATE_PARMS(NODE) TREE_VALUE (NODE)
2796
2797 /* Nonzero if NODE (a TEMPLATE_DECL) is a member template, in the
2798 sense of [temp.mem]. */
2799 #define DECL_MEMBER_TEMPLATE_P(NODE) \
2800 (DECL_LANG_FLAG_1 (TEMPLATE_DECL_CHECK (NODE)))
2801
2802 /* Nonzero if the NODE corresponds to the template parameters for a
2803 member template, whose inline definition is being processed after
2804 the class definition is complete. */
2805 #define TEMPLATE_PARMS_FOR_INLINE(NODE) TREE_LANG_FLAG_1 (NODE)
2806
2807 /* Determine if a parameter (i.e., a PARM_DECL) is a function
2808 parameter pack. */
2809 #define FUNCTION_PARAMETER_PACK_P(NODE) \
2810 (DECL_LANG_FLAG_1 (PARM_DECL_CHECK (NODE)))
2811
2812 /* Determines if NODE is an expansion of one or more parameter packs,
2813 e.g., a TYPE_PACK_EXPANSION or EXPR_PACK_EXPANSION. */
2814 #define PACK_EXPANSION_P(NODE) \
2815 (TREE_CODE (NODE) == TYPE_PACK_EXPANSION \
2816 || TREE_CODE (NODE) == EXPR_PACK_EXPANSION)
2817
2818 /* Extracts the type or expression pattern from a TYPE_PACK_EXPANSION or
2819 EXPR_PACK_EXPANSION. */
2820 #define PACK_EXPANSION_PATTERN(NODE) \
2821 (TREE_CODE (NODE) == TYPE_PACK_EXPANSION? TREE_TYPE (NODE) \
2822 : TREE_OPERAND (NODE, 0))
2823
2824 /* Sets the type or expression pattern for a TYPE_PACK_EXPANSION or
2825 EXPR_PACK_EXPANSION. */
2826 #define SET_PACK_EXPANSION_PATTERN(NODE,VALUE) \
2827 if (TREE_CODE (NODE) == TYPE_PACK_EXPANSION) \
2828 TREE_TYPE (NODE) = VALUE; \
2829 else \
2830 TREE_OPERAND (NODE, 0) = VALUE
2831
2832 /* The list of parameter packs used in the PACK_EXPANSION_* node. The
2833 TREE_VALUE of each TREE_LIST contains the parameter packs. */
2834 #define PACK_EXPANSION_PARAMETER_PACKS(NODE) \
2835 *(TREE_CODE (NODE) == EXPR_PACK_EXPANSION \
2836 ? &TREE_OPERAND (NODE, 1) \
2837 : &TYPE_MINVAL (TYPE_PACK_EXPANSION_CHECK (NODE)))
2838
2839 /* Any additional template args to be applied when substituting into
2840 the pattern, set by tsubst_pack_expansion for partial instantiations. */
2841 #define PACK_EXPANSION_EXTRA_ARGS(NODE) \
2842 *(TREE_CODE (NODE) == TYPE_PACK_EXPANSION \
2843 ? &TYPE_MAXVAL (NODE) \
2844 : &TREE_OPERAND ((NODE), 2))
2845
2846 /* True iff this pack expansion is within a function context. */
2847 #define PACK_EXPANSION_LOCAL_P(NODE) TREE_LANG_FLAG_0 (NODE)
2848
2849 /* Determine if this is an argument pack. */
2850 #define ARGUMENT_PACK_P(NODE) \
2851 (TREE_CODE (NODE) == TYPE_ARGUMENT_PACK \
2852 || TREE_CODE (NODE) == NONTYPE_ARGUMENT_PACK)
2853
2854 /* The arguments stored in an argument pack. Arguments are stored in a
2855 TREE_VEC, which may have length zero. */
2856 #define ARGUMENT_PACK_ARGS(NODE) \
2857 (TREE_CODE (NODE) == TYPE_ARGUMENT_PACK? TREE_TYPE (NODE) \
2858 : TREE_OPERAND (NODE, 0))
2859
2860 /* Set the arguments stored in an argument pack. VALUE must be a
2861 TREE_VEC. */
2862 #define SET_ARGUMENT_PACK_ARGS(NODE,VALUE) \
2863 if (TREE_CODE (NODE) == TYPE_ARGUMENT_PACK) \
2864 TREE_TYPE (NODE) = VALUE; \
2865 else \
2866 TREE_OPERAND (NODE, 0) = VALUE
2867
2868 /* Whether the argument pack is "incomplete", meaning that more
2869 arguments can still be deduced. Incomplete argument packs are only
2870 used when the user has provided an explicit template argument list
2871 for a variadic function template. Some of the explicit template
2872 arguments will be placed into the beginning of the argument pack,
2873 but additional arguments might still be deduced. */
2874 #define ARGUMENT_PACK_INCOMPLETE_P(NODE) \
2875 TREE_LANG_FLAG_0 (ARGUMENT_PACK_ARGS (NODE))
2876
2877 /* When ARGUMENT_PACK_INCOMPLETE_P, stores the explicit template
2878 arguments used to fill this pack. */
2879 #define ARGUMENT_PACK_EXPLICIT_ARGS(NODE) \
2880 TREE_TYPE (ARGUMENT_PACK_ARGS (NODE))
2881
2882 /* In an ARGUMENT_PACK_SELECT, the argument pack from which an
2883 argument will be selected. */
2884 #define ARGUMENT_PACK_SELECT_FROM_PACK(NODE) \
2885 (((struct tree_argument_pack_select *)ARGUMENT_PACK_SELECT_CHECK (NODE))->argument_pack)
2886
2887 /* In an ARGUMENT_PACK_SELECT, the index of the argument we want to
2888 select. */
2889 #define ARGUMENT_PACK_SELECT_INDEX(NODE) \
2890 (((struct tree_argument_pack_select *)ARGUMENT_PACK_SELECT_CHECK (NODE))->index)
2891
2892 /* In an ARGUMENT_PACK_SELECT, the actual underlying argument that the
2893 ARGUMENT_PACK_SELECT represents. */
2894 #define ARGUMENT_PACK_SELECT_ARG(NODE) \
2895 TREE_VEC_ELT (ARGUMENT_PACK_ARGS (ARGUMENT_PACK_SELECT_FROM_PACK (NODE)), \
2896 ARGUMENT_PACK_SELECT_INDEX (NODE));
2897
2898 /* In a FUNCTION_DECL, the saved language-specific per-function data. */
2899 #define DECL_SAVED_FUNCTION_DATA(NODE) \
2900 (LANG_DECL_FN_CHECK (FUNCTION_DECL_CHECK (NODE)) \
2901 ->u.saved_language_function)
2902
2903 /* True if NODE is an implicit INDIRECT_EXPR from convert_from_reference. */
2904 #define REFERENCE_REF_P(NODE) \
2905 (TREE_CODE (NODE) == INDIRECT_REF \
2906 && TREE_TYPE (TREE_OPERAND (NODE, 0)) \
2907 && (TREE_CODE (TREE_TYPE (TREE_OPERAND ((NODE), 0))) \
2908 == REFERENCE_TYPE))
2909
2910 #define NEW_EXPR_USE_GLOBAL(NODE) \
2911 TREE_LANG_FLAG_0 (NEW_EXPR_CHECK (NODE))
2912 #define DELETE_EXPR_USE_GLOBAL(NODE) \
2913 TREE_LANG_FLAG_0 (DELETE_EXPR_CHECK (NODE))
2914 #define DELETE_EXPR_USE_VEC(NODE) \
2915 TREE_LANG_FLAG_1 (DELETE_EXPR_CHECK (NODE))
2916
2917 /* Indicates that this is a non-dependent COMPOUND_EXPR which will
2918 resolve to a function call. */
2919 #define COMPOUND_EXPR_OVERLOADED(NODE) \
2920 TREE_LANG_FLAG_0 (COMPOUND_EXPR_CHECK (NODE))
2921
2922 /* In a CALL_EXPR appearing in a template, true if Koenig lookup
2923 should be performed at instantiation time. */
2924 #define KOENIG_LOOKUP_P(NODE) TREE_LANG_FLAG_0 (CALL_EXPR_CHECK (NODE))
2925
2926 /* Indicates whether a string literal has been parenthesized. Such
2927 usages are disallowed in certain circumstances. */
2928
2929 #define PAREN_STRING_LITERAL_P(NODE) \
2930 TREE_LANG_FLAG_0 (STRING_CST_CHECK (NODE))
2931
2932 /* Nonzero if this AGGR_INIT_EXPR provides for initialization via a
2933 constructor call, rather than an ordinary function call. */
2934 #define AGGR_INIT_VIA_CTOR_P(NODE) \
2935 TREE_LANG_FLAG_0 (AGGR_INIT_EXPR_CHECK (NODE))
2936
2937 /* Nonzero if expanding this AGGR_INIT_EXPR should first zero-initialize
2938 the object. */
2939 #define AGGR_INIT_ZERO_FIRST(NODE) \
2940 TREE_LANG_FLAG_2 (AGGR_INIT_EXPR_CHECK (NODE))
2941
2942 /* AGGR_INIT_EXPR accessors. These are equivalent to the CALL_EXPR
2943 accessors, except for AGGR_INIT_EXPR_SLOT (which takes the place of
2944 CALL_EXPR_STATIC_CHAIN). */
2945
2946 #define AGGR_INIT_EXPR_FN(NODE) TREE_OPERAND (AGGR_INIT_EXPR_CHECK (NODE), 1)
2947 #define AGGR_INIT_EXPR_SLOT(NODE) \
2948 TREE_OPERAND (AGGR_INIT_EXPR_CHECK (NODE), 2)
2949 #define AGGR_INIT_EXPR_ARG(NODE, I) \
2950 TREE_OPERAND (AGGR_INIT_EXPR_CHECK (NODE), (I) + 3)
2951 #define aggr_init_expr_nargs(NODE) (VL_EXP_OPERAND_LENGTH(NODE) - 3)
2952
2953 /* AGGR_INIT_EXPR_ARGP returns a pointer to the argument vector for NODE.
2954 We can't use &AGGR_INIT_EXPR_ARG (NODE, 0) because that will complain if
2955 the argument count is zero when checking is enabled. Instead, do
2956 the pointer arithmetic to advance past the 3 fixed operands in a
2957 AGGR_INIT_EXPR. That produces a valid pointer to just past the end of
2958 the operand array, even if it's not valid to dereference it. */
2959 #define AGGR_INIT_EXPR_ARGP(NODE) \
2960 (&(TREE_OPERAND (AGGR_INIT_EXPR_CHECK (NODE), 0)) + 3)
2961
2962 /* Abstract iterators for AGGR_INIT_EXPRs. */
2963
2964 /* Structure containing iterator state. */
2965 typedef struct aggr_init_expr_arg_iterator_d {
2966 tree t; /* the aggr_init_expr */
2967 int n; /* argument count */
2968 int i; /* next argument index */
2969 } aggr_init_expr_arg_iterator;
2970
2971 /* Initialize the abstract argument list iterator object ITER with the
2972 arguments from AGGR_INIT_EXPR node EXP. */
2973 static inline void
init_aggr_init_expr_arg_iterator(tree exp,aggr_init_expr_arg_iterator * iter)2974 init_aggr_init_expr_arg_iterator (tree exp,
2975 aggr_init_expr_arg_iterator *iter)
2976 {
2977 iter->t = exp;
2978 iter->n = aggr_init_expr_nargs (exp);
2979 iter->i = 0;
2980 }
2981
2982 /* Return the next argument from abstract argument list iterator object ITER,
2983 and advance its state. Return NULL_TREE if there are no more arguments. */
2984 static inline tree
next_aggr_init_expr_arg(aggr_init_expr_arg_iterator * iter)2985 next_aggr_init_expr_arg (aggr_init_expr_arg_iterator *iter)
2986 {
2987 tree result;
2988 if (iter->i >= iter->n)
2989 return NULL_TREE;
2990 result = AGGR_INIT_EXPR_ARG (iter->t, iter->i);
2991 iter->i++;
2992 return result;
2993 }
2994
2995 /* Initialize the abstract argument list iterator object ITER, then advance
2996 past and return the first argument. Useful in for expressions, e.g.
2997 for (arg = first_aggr_init_expr_arg (exp, &iter); arg;
2998 arg = next_aggr_init_expr_arg (&iter)) */
2999 static inline tree
first_aggr_init_expr_arg(tree exp,aggr_init_expr_arg_iterator * iter)3000 first_aggr_init_expr_arg (tree exp, aggr_init_expr_arg_iterator *iter)
3001 {
3002 init_aggr_init_expr_arg_iterator (exp, iter);
3003 return next_aggr_init_expr_arg (iter);
3004 }
3005
3006 /* Test whether there are more arguments in abstract argument list iterator
3007 ITER, without changing its state. */
3008 static inline bool
more_aggr_init_expr_args_p(const aggr_init_expr_arg_iterator * iter)3009 more_aggr_init_expr_args_p (const aggr_init_expr_arg_iterator *iter)
3010 {
3011 return (iter->i < iter->n);
3012 }
3013
3014 /* Iterate through each argument ARG of AGGR_INIT_EXPR CALL, using variable
3015 ITER (of type aggr_init_expr_arg_iterator) to hold the iteration state. */
3016 #define FOR_EACH_AGGR_INIT_EXPR_ARG(arg, iter, call) \
3017 for ((arg) = first_aggr_init_expr_arg ((call), &(iter)); (arg); \
3018 (arg) = next_aggr_init_expr_arg (&(iter)))
3019
3020 /* VEC_INIT_EXPR accessors. */
3021 #define VEC_INIT_EXPR_SLOT(NODE) TREE_OPERAND (VEC_INIT_EXPR_CHECK (NODE), 0)
3022 #define VEC_INIT_EXPR_INIT(NODE) TREE_OPERAND (VEC_INIT_EXPR_CHECK (NODE), 1)
3023
3024 /* Indicates that a VEC_INIT_EXPR is a potential constant expression.
3025 Only set when the current function is constexpr. */
3026 #define VEC_INIT_EXPR_IS_CONSTEXPR(NODE) \
3027 TREE_LANG_FLAG_0 (VEC_INIT_EXPR_CHECK (NODE))
3028
3029 /* Indicates that a VEC_INIT_EXPR is expressing value-initialization. */
3030 #define VEC_INIT_EXPR_VALUE_INIT(NODE) \
3031 TREE_LANG_FLAG_1 (VEC_INIT_EXPR_CHECK (NODE))
3032
3033 /* The condition under which this MUST_NOT_THROW_EXPR actually blocks
3034 exceptions. NULL_TREE means 'true'. */
3035 #define MUST_NOT_THROW_COND(NODE) \
3036 TREE_OPERAND (MUST_NOT_THROW_EXPR_CHECK (NODE), 1)
3037
3038 /* The TYPE_MAIN_DECL for a class template type is a TYPE_DECL, not a
3039 TEMPLATE_DECL. This macro determines whether or not a given class
3040 type is really a template type, as opposed to an instantiation or
3041 specialization of one. */
3042 #define CLASSTYPE_IS_TEMPLATE(NODE) \
3043 (CLASSTYPE_TEMPLATE_INFO (NODE) \
3044 && !CLASSTYPE_USE_TEMPLATE (NODE) \
3045 && PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (NODE)))
3046
3047 /* The name used by the user to name the typename type. Typically,
3048 this is an IDENTIFIER_NODE, and the same as the DECL_NAME on the
3049 corresponding TYPE_DECL. However, this may also be a
3050 TEMPLATE_ID_EXPR if we had something like `typename X::Y<T>'. */
3051 #define TYPENAME_TYPE_FULLNAME(NODE) \
3052 (TYPE_VALUES_RAW (TYPENAME_TYPE_CHECK (NODE)))
3053
3054 /* True if a TYPENAME_TYPE was declared as an "enum". */
3055 #define TYPENAME_IS_ENUM_P(NODE) \
3056 (TREE_LANG_FLAG_0 (TYPENAME_TYPE_CHECK (NODE)))
3057
3058 /* True if a TYPENAME_TYPE was declared as a "class", "struct", or
3059 "union". */
3060 #define TYPENAME_IS_CLASS_P(NODE) \
3061 (TREE_LANG_FLAG_1 (TYPENAME_TYPE_CHECK (NODE)))
3062
3063 /* True if a TYPENAME_TYPE is in the process of being resolved. */
3064 #define TYPENAME_IS_RESOLVING_P(NODE) \
3065 (TREE_LANG_FLAG_2 (TYPENAME_TYPE_CHECK (NODE)))
3066
3067 /* [class.virtual]
3068
3069 A class that declares or inherits a virtual function is called a
3070 polymorphic class. */
3071 #define TYPE_POLYMORPHIC_P(NODE) (TREE_LANG_FLAG_2 (NODE))
3072
3073 /* Nonzero if this class has a virtual function table pointer. */
3074 #define TYPE_CONTAINS_VPTR_P(NODE) \
3075 (TYPE_POLYMORPHIC_P (NODE) || CLASSTYPE_VBASECLASSES (NODE))
3076
3077 /* This flag is true of a local VAR_DECL if it was declared in a for
3078 statement, but we are no longer in the scope of the for. */
3079 #define DECL_DEAD_FOR_LOCAL(NODE) DECL_LANG_FLAG_7 (VAR_DECL_CHECK (NODE))
3080
3081 /* This flag is set on a VAR_DECL that is a DECL_DEAD_FOR_LOCAL
3082 if we already emitted a warning about using it. */
3083 #define DECL_ERROR_REPORTED(NODE) DECL_LANG_FLAG_0 (VAR_DECL_CHECK (NODE))
3084
3085 /* Nonzero if NODE is a FUNCTION_DECL (for a function with global
3086 scope) declared in a local scope. */
3087 #define DECL_LOCAL_FUNCTION_P(NODE) \
3088 DECL_LANG_FLAG_0 (FUNCTION_DECL_CHECK (NODE))
3089
3090 /* Nonzero if NODE is a DECL which we know about but which has not
3091 been explicitly declared, such as a built-in function or a friend
3092 declared inside a class. In the latter case DECL_HIDDEN_FRIEND_P
3093 will be set. */
3094 #define DECL_ANTICIPATED(NODE) \
3095 (DECL_LANG_SPECIFIC (DECL_COMMON_CHECK (NODE))->u.base.anticipated_p)
3096
3097 /* Nonzero if NODE is a FUNCTION_DECL which was declared as a friend
3098 within a class but has not been declared in the surrounding scope.
3099 The function is invisible except via argument dependent lookup. */
3100 #define DECL_HIDDEN_FRIEND_P(NODE) \
3101 (LANG_DECL_FN_CHECK (DECL_COMMON_CHECK (NODE))->hidden_friend_p)
3102
3103 /* Nonzero if NODE is a FUNCTION_DECL generated by implicitly_declare_fn
3104 that we shouldn't actually declare implicitly; it is only used for
3105 comparing to an =default declaration. */
3106 #define FNDECL_SUPPRESS_IMPLICIT_DECL(NODE) \
3107 (LANG_DECL_FN_CHECK (DECL_COMMON_CHECK (NODE))->suppress_implicit_decl)
3108
3109 /* Nonzero if DECL has been declared threadprivate by
3110 #pragma omp threadprivate. */
3111 #define CP_DECL_THREADPRIVATE_P(DECL) \
3112 (DECL_LANG_SPECIFIC (VAR_DECL_CHECK (DECL))->u.base.threadprivate_or_deleted_p)
3113
3114 /* Nonzero if DECL was declared with '= delete'. */
3115 #define DECL_DELETED_FN(DECL) \
3116 (DECL_LANG_SPECIFIC (FUNCTION_DECL_CHECK (DECL))->u.base.threadprivate_or_deleted_p)
3117
3118 /* Nonzero if DECL was declared with '= default' (maybe implicitly). */
3119 #define DECL_DEFAULTED_FN(DECL) \
3120 (LANG_DECL_FN_CHECK (DECL)->defaulted_p)
3121
3122 /* Nonzero if DECL is explicitly defaulted in the class body. */
3123 #define DECL_DEFAULTED_IN_CLASS_P(DECL) \
3124 (DECL_DEFAULTED_FN (DECL) && DECL_INITIALIZED_IN_CLASS_P (DECL))
3125 /* Nonzero if DECL was defaulted outside the class body. */
3126 #define DECL_DEFAULTED_OUTSIDE_CLASS_P(DECL) \
3127 (DECL_DEFAULTED_FN (DECL) \
3128 && !(DECL_ARTIFICIAL (DECL) || DECL_INITIALIZED_IN_CLASS_P (DECL)))
3129
3130 /* Record whether a typedef for type `int' was actually `signed int'. */
3131 #define C_TYPEDEF_EXPLICITLY_SIGNED(EXP) DECL_LANG_FLAG_1 (EXP)
3132
3133 /* Returns nonzero if DECL has external linkage, as specified by the
3134 language standard. (This predicate may hold even when the
3135 corresponding entity is not actually given external linkage in the
3136 object file; see decl_linkage for details.) */
3137 #define DECL_EXTERNAL_LINKAGE_P(DECL) \
3138 (decl_linkage (DECL) == lk_external)
3139
3140 /* Keep these codes in ascending code order. */
3141
3142 #define INTEGRAL_CODE_P(CODE) \
3143 ((CODE) == ENUMERAL_TYPE \
3144 || (CODE) == BOOLEAN_TYPE \
3145 || (CODE) == INTEGER_TYPE)
3146
3147 /* [basic.fundamental]
3148
3149 Types bool, char, wchar_t, and the signed and unsigned integer types
3150 are collectively called integral types.
3151
3152 Note that INTEGRAL_TYPE_P, as defined in tree.h, allows enumeration
3153 types as well, which is incorrect in C++. Keep these checks in
3154 ascending code order. */
3155 #define CP_INTEGRAL_TYPE_P(TYPE) \
3156 (TREE_CODE (TYPE) == BOOLEAN_TYPE \
3157 || TREE_CODE (TYPE) == INTEGER_TYPE)
3158
3159 /* Returns true if TYPE is an integral or enumeration name. Keep
3160 these checks in ascending code order. */
3161 #define INTEGRAL_OR_ENUMERATION_TYPE_P(TYPE) \
3162 (TREE_CODE (TYPE) == ENUMERAL_TYPE || CP_INTEGRAL_TYPE_P (TYPE))
3163
3164 /* Returns true if TYPE is an integral or unscoped enumeration type. */
3165 #define INTEGRAL_OR_UNSCOPED_ENUMERATION_TYPE_P(TYPE) \
3166 (UNSCOPED_ENUM_P (TYPE) || CP_INTEGRAL_TYPE_P (TYPE))
3167
3168 /* True if the class type TYPE is a literal type. */
3169 #define CLASSTYPE_LITERAL_P(TYPE) \
3170 (LANG_TYPE_CLASS_CHECK (TYPE)->is_literal)
3171
3172 /* [basic.fundamental]
3173
3174 Integral and floating types are collectively called arithmetic
3175 types.
3176
3177 As a GNU extension, we also accept complex types.
3178
3179 Keep these checks in ascending code order. */
3180 #define ARITHMETIC_TYPE_P(TYPE) \
3181 (CP_INTEGRAL_TYPE_P (TYPE) \
3182 || TREE_CODE (TYPE) == REAL_TYPE \
3183 || TREE_CODE (TYPE) == COMPLEX_TYPE)
3184
3185 /* True iff TYPE is cv decltype(nullptr). */
3186 #define NULLPTR_TYPE_P(TYPE) (TREE_CODE (TYPE) == NULLPTR_TYPE)
3187
3188 /* [basic.types]
3189
3190 Arithmetic types, enumeration types, pointer types,
3191 pointer-to-member types, and std::nullptr_t are collectively called
3192 scalar types.
3193
3194 Keep these checks in ascending code order. */
3195 #define SCALAR_TYPE_P(TYPE) \
3196 (TYPE_PTRMEM_P (TYPE) \
3197 || TREE_CODE (TYPE) == ENUMERAL_TYPE \
3198 || ARITHMETIC_TYPE_P (TYPE) \
3199 || TYPE_PTR_P (TYPE) \
3200 || TYPE_PTRMEMFUNC_P (TYPE) \
3201 || NULLPTR_TYPE_P (TYPE))
3202
3203 /* Determines whether this type is a C++0x scoped enumeration
3204 type. Scoped enumerations types are introduced via "enum class" or
3205 "enum struct", e.g.,
3206
3207 enum class Color {
3208 Red, Green, Blue
3209 };
3210
3211 Scoped enumeration types are different from normal (unscoped)
3212 enumeration types in several ways:
3213
3214 - The enumerators of a scoped enumeration type are only available
3215 within the scope of the enumeration type and not in the
3216 enclosing scope. For example, the Red color can be referred to
3217 with "Color::Red" but not "Red".
3218
3219 - Scoped enumerators and enumerations do not implicitly convert
3220 to integers or 'bool'.
3221
3222 - The underlying type of the enum is well-defined. */
3223 #define SCOPED_ENUM_P(TYPE) \
3224 (TREE_CODE (TYPE) == ENUMERAL_TYPE && ENUM_IS_SCOPED (TYPE))
3225
3226 /* Determine whether this is an unscoped enumeration type. */
3227 #define UNSCOPED_ENUM_P(TYPE) \
3228 (TREE_CODE (TYPE) == ENUMERAL_TYPE && !ENUM_IS_SCOPED (TYPE))
3229
3230 /* Set the flag indicating whether an ENUMERAL_TYPE is a C++0x scoped
3231 enumeration type (1) or a normal (unscoped) enumeration type
3232 (0). */
3233 #define SET_SCOPED_ENUM_P(TYPE, VAL) \
3234 (ENUM_IS_SCOPED (TYPE) = (VAL))
3235
3236 #define SET_OPAQUE_ENUM_P(TYPE, VAL) \
3237 (ENUM_IS_OPAQUE (TYPE) = (VAL))
3238
3239 #define OPAQUE_ENUM_P(TYPE) \
3240 (TREE_CODE (TYPE) == ENUMERAL_TYPE && ENUM_IS_OPAQUE (TYPE))
3241
3242 /* Determines whether an ENUMERAL_TYPE has an explicit
3243 underlying type. */
3244 #define ENUM_FIXED_UNDERLYING_TYPE_P(NODE) (TYPE_LANG_FLAG_5 (NODE))
3245
3246 /* Returns the underlying type of the given enumeration type. The
3247 underlying type is determined in different ways, depending on the
3248 properties of the enum:
3249
3250 - In C++0x, the underlying type can be explicitly specified, e.g.,
3251
3252 enum E1 : char { ... } // underlying type is char
3253
3254 - In a C++0x scoped enumeration, the underlying type is int
3255 unless otherwises specified:
3256
3257 enum class E2 { ... } // underlying type is int
3258
3259 - Otherwise, the underlying type is determined based on the
3260 values of the enumerators. In this case, the
3261 ENUM_UNDERLYING_TYPE will not be set until after the definition
3262 of the enumeration is completed by finish_enum. */
3263 #define ENUM_UNDERLYING_TYPE(TYPE) \
3264 TREE_TYPE (ENUMERAL_TYPE_CHECK (TYPE))
3265
3266 /* [dcl.init.aggr]
3267
3268 An aggregate is an array or a class with no user-provided
3269 constructors, no brace-or-equal-initializers for non-static data
3270 members, no private or protected non-static data members, no
3271 base classes, and no virtual functions.
3272
3273 As an extension, we also treat vectors as aggregates. Keep these
3274 checks in ascending code order. */
3275 #define CP_AGGREGATE_TYPE_P(TYPE) \
3276 (TREE_CODE (TYPE) == VECTOR_TYPE \
3277 ||TREE_CODE (TYPE) == ARRAY_TYPE \
3278 || (CLASS_TYPE_P (TYPE) && !CLASSTYPE_NON_AGGREGATE (TYPE)))
3279
3280 /* Nonzero for a class type means that the class type has a
3281 user-declared constructor. */
3282 #define TYPE_HAS_USER_CONSTRUCTOR(NODE) (TYPE_LANG_FLAG_1 (NODE))
3283
3284 /* When appearing in an INDIRECT_REF, it means that the tree structure
3285 underneath is actually a call to a constructor. This is needed
3286 when the constructor must initialize local storage (which can
3287 be automatically destroyed), rather than allowing it to allocate
3288 space from the heap.
3289
3290 When appearing in a SAVE_EXPR, it means that underneath
3291 is a call to a constructor.
3292
3293 When appearing in a CONSTRUCTOR, the expression is a
3294 compound literal.
3295
3296 When appearing in a FIELD_DECL, it means that this field
3297 has been duly initialized in its constructor. */
3298 #define TREE_HAS_CONSTRUCTOR(NODE) (TREE_LANG_FLAG_4 (NODE))
3299
3300 /* True if NODE is a brace-enclosed initializer. */
3301 #define BRACE_ENCLOSED_INITIALIZER_P(NODE) \
3302 (TREE_CODE (NODE) == CONSTRUCTOR && TREE_TYPE (NODE) == init_list_type_node)
3303
3304 /* True if NODE is a compound-literal, i.e., a brace-enclosed
3305 initializer cast to a particular type. */
3306 #define COMPOUND_LITERAL_P(NODE) \
3307 (TREE_CODE (NODE) == CONSTRUCTOR && TREE_HAS_CONSTRUCTOR (NODE))
3308
3309 #define EMPTY_CONSTRUCTOR_P(NODE) (TREE_CODE (NODE) == CONSTRUCTOR \
3310 && VEC_empty (constructor_elt, \
3311 CONSTRUCTOR_ELTS (NODE)) \
3312 && !TREE_HAS_CONSTRUCTOR (NODE))
3313
3314 /* True if NODE is a init-list used as a direct-initializer, i.e.
3315 B b{1,2}, not B b({1,2}) or B b = {1,2}. */
3316 #define CONSTRUCTOR_IS_DIRECT_INIT(NODE) (TREE_LANG_FLAG_0 (CONSTRUCTOR_CHECK (NODE)))
3317
3318 /* True if NODE represents a conversion for direct-initialization in a
3319 template. Set by perform_implicit_conversion_flags. */
3320 #define IMPLICIT_CONV_EXPR_DIRECT_INIT(NODE) \
3321 (TREE_LANG_FLAG_0 (IMPLICIT_CONV_EXPR_CHECK (NODE)))
3322
3323 /* Nonzero means that an object of this type can not be initialized using
3324 an initializer list. */
3325 #define CLASSTYPE_NON_AGGREGATE(NODE) \
3326 (LANG_TYPE_CLASS_CHECK (NODE)->non_aggregate)
3327 #define TYPE_NON_AGGREGATE_CLASS(NODE) \
3328 (CLASS_TYPE_P (NODE) && CLASSTYPE_NON_AGGREGATE (NODE))
3329
3330 /* Nonzero if there is a non-trivial X::op=(cv X&) for this class. */
3331 #define TYPE_HAS_COMPLEX_COPY_ASSIGN(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_copy_assign)
3332
3333 /* Nonzero if there is a non-trivial X::X(cv X&) for this class. */
3334 #define TYPE_HAS_COMPLEX_COPY_CTOR(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_copy_ctor)
3335
3336 /* Nonzero if there is a non-trivial X::op=(X&&) for this class. */
3337 #define TYPE_HAS_COMPLEX_MOVE_ASSIGN(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_move_assign)
3338
3339 /* Nonzero if there is a non-trivial X::X(X&&) for this class. */
3340 #define TYPE_HAS_COMPLEX_MOVE_CTOR(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_move_ctor)
3341
3342 /* Nonzero if there is a non-trivial default constructor for this class. */
3343 #define TYPE_HAS_COMPLEX_DFLT(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->has_complex_dflt)
3344
3345 /* Nonzero if TYPE has a trivial destructor. From [class.dtor]:
3346
3347 A destructor is trivial if it is an implicitly declared
3348 destructor and if:
3349
3350 - all of the direct base classes of its class have trivial
3351 destructors,
3352
3353 - for all of the non-static data members of its class that are
3354 of class type (or array thereof), each such class has a
3355 trivial destructor. */
3356 #define TYPE_HAS_TRIVIAL_DESTRUCTOR(NODE) \
3357 (!TYPE_HAS_NONTRIVIAL_DESTRUCTOR (NODE))
3358
3359 /* Nonzero for _TYPE node means that this type does not have a trivial
3360 destructor. Therefore, destroying an object of this type will
3361 involve a call to a destructor. This can apply to objects of
3362 ARRAY_TYPE is the type of the elements needs a destructor. */
3363 #define TYPE_HAS_NONTRIVIAL_DESTRUCTOR(NODE) \
3364 (TYPE_LANG_FLAG_4 (NODE))
3365
3366 /* Nonzero for class type means that the default constructor is trivial. */
3367 #define TYPE_HAS_TRIVIAL_DFLT(NODE) \
3368 (TYPE_HAS_DEFAULT_CONSTRUCTOR (NODE) && ! TYPE_HAS_COMPLEX_DFLT (NODE))
3369
3370 /* Nonzero for class type means that copy initialization of this type can use
3371 a bitwise copy. */
3372 #define TYPE_HAS_TRIVIAL_COPY_CTOR(NODE) \
3373 (TYPE_HAS_COPY_CTOR (NODE) && ! TYPE_HAS_COMPLEX_COPY_CTOR (NODE))
3374
3375 /* Nonzero for class type means that assignment of this type can use
3376 a bitwise copy. */
3377 #define TYPE_HAS_TRIVIAL_COPY_ASSIGN(NODE) \
3378 (TYPE_HAS_COPY_ASSIGN (NODE) && ! TYPE_HAS_COMPLEX_COPY_ASSIGN (NODE))
3379
3380 /* Returns true if NODE is a pointer-to-data-member. */
3381 #define TYPE_PTRMEM_P(NODE) \
3382 (TREE_CODE (NODE) == OFFSET_TYPE)
3383 /* Returns true if NODE is a pointer. */
3384 #define TYPE_PTR_P(NODE) \
3385 (TREE_CODE (NODE) == POINTER_TYPE)
3386
3387 /* Returns true if NODE is an object type:
3388
3389 [basic.types]
3390
3391 An object type is a (possibly cv-qualified) type that is not a
3392 function type, not a reference type, and not a void type.
3393
3394 Keep these checks in ascending order, for speed. */
3395 #define TYPE_OBJ_P(NODE) \
3396 (TREE_CODE (NODE) != REFERENCE_TYPE \
3397 && TREE_CODE (NODE) != VOID_TYPE \
3398 && TREE_CODE (NODE) != FUNCTION_TYPE \
3399 && TREE_CODE (NODE) != METHOD_TYPE)
3400
3401 /* Returns true if NODE is a pointer to an object. Keep these checks
3402 in ascending tree code order. */
3403 #define TYPE_PTROB_P(NODE) \
3404 (TYPE_PTR_P (NODE) && TYPE_OBJ_P (TREE_TYPE (NODE)))
3405
3406 /* Returns true if NODE is a reference to an object. Keep these checks
3407 in ascending tree code order. */
3408 #define TYPE_REF_OBJ_P(NODE) \
3409 (TREE_CODE (NODE) == REFERENCE_TYPE && TYPE_OBJ_P (TREE_TYPE (NODE)))
3410
3411 /* Returns true if NODE is a pointer to an object, or a pointer to
3412 void. Keep these checks in ascending tree code order. */
3413 #define TYPE_PTROBV_P(NODE) \
3414 (TYPE_PTR_P (NODE) \
3415 && !(TREE_CODE (TREE_TYPE (NODE)) == FUNCTION_TYPE \
3416 || TREE_CODE (TREE_TYPE (NODE)) == METHOD_TYPE))
3417
3418 /* Returns true if NODE is a pointer to function. */
3419 #define TYPE_PTRFN_P(NODE) \
3420 (TREE_CODE (NODE) == POINTER_TYPE \
3421 && TREE_CODE (TREE_TYPE (NODE)) == FUNCTION_TYPE)
3422
3423 /* Returns true if NODE is a reference to function. */
3424 #define TYPE_REFFN_P(NODE) \
3425 (TREE_CODE (NODE) == REFERENCE_TYPE \
3426 && TREE_CODE (TREE_TYPE (NODE)) == FUNCTION_TYPE)
3427
3428 /* Nonzero for _TYPE node means that this type is a pointer to member
3429 function type. */
3430 #define TYPE_PTRMEMFUNC_P(NODE) \
3431 (TREE_CODE (NODE) == RECORD_TYPE \
3432 && TYPE_LANG_SPECIFIC (NODE) \
3433 && TYPE_PTRMEMFUNC_FLAG (NODE))
3434
3435 #define TYPE_PTRMEMFUNC_FLAG(NODE) \
3436 (LANG_TYPE_CLASS_CHECK (NODE)->ptrmemfunc_flag)
3437
3438 /* Returns true if NODE is a pointer-to-member. */
3439 #define TYPE_PTR_TO_MEMBER_P(NODE) \
3440 (TYPE_PTRMEM_P (NODE) || TYPE_PTRMEMFUNC_P (NODE))
3441
3442 /* Indicates when overload resolution may resolve to a pointer to
3443 member function. [expr.unary.op]/3 */
3444 #define PTRMEM_OK_P(NODE) \
3445 TREE_LANG_FLAG_0 (TREE_CHECK3 ((NODE), ADDR_EXPR, OFFSET_REF, SCOPE_REF))
3446
3447 /* Get the POINTER_TYPE to the METHOD_TYPE associated with this
3448 pointer to member function. TYPE_PTRMEMFUNC_P _must_ be true,
3449 before using this macro. */
3450 #define TYPE_PTRMEMFUNC_FN_TYPE(NODE) \
3451 (TREE_TYPE (TYPE_FIELDS (NODE)))
3452
3453 /* Returns `A' for a type like `int (A::*)(double)' */
3454 #define TYPE_PTRMEMFUNC_OBJECT_TYPE(NODE) \
3455 TYPE_METHOD_BASETYPE (TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (NODE)))
3456
3457 /* These are use to manipulate the canonical RECORD_TYPE from the
3458 hashed POINTER_TYPE, and can only be used on the POINTER_TYPE. */
3459 #define TYPE_GET_PTRMEMFUNC_TYPE(NODE) \
3460 (TYPE_LANG_SPECIFIC (NODE) ? LANG_TYPE_PTRMEM_CHECK (NODE)->record : NULL)
3461 #define TYPE_SET_PTRMEMFUNC_TYPE(NODE, VALUE) \
3462 do { \
3463 if (TYPE_LANG_SPECIFIC (NODE) == NULL) \
3464 { \
3465 TYPE_LANG_SPECIFIC (NODE) = ggc_alloc_cleared_lang_type \
3466 (sizeof (struct lang_type_ptrmem)); \
3467 TYPE_LANG_SPECIFIC (NODE)->u.ptrmem.h.is_lang_type_class = 0; \
3468 } \
3469 TYPE_LANG_SPECIFIC (NODE)->u.ptrmem.record = (VALUE); \
3470 } while (0)
3471
3472 /* For a pointer-to-member type of the form `T X::*', this is `X'.
3473 For a type like `void (X::*)() const', this type is `X', not `const
3474 X'. To get at the `const X' you have to look at the
3475 TYPE_PTRMEM_POINTED_TO_TYPE; there, the first parameter will have
3476 type `const X*'. */
3477 #define TYPE_PTRMEM_CLASS_TYPE(NODE) \
3478 (TYPE_PTRMEM_P (NODE) \
3479 ? TYPE_OFFSET_BASETYPE (NODE) \
3480 : TYPE_PTRMEMFUNC_OBJECT_TYPE (NODE))
3481
3482 /* For a pointer-to-member type of the form `T X::*', this is `T'. */
3483 #define TYPE_PTRMEM_POINTED_TO_TYPE(NODE) \
3484 (TYPE_PTRMEM_P (NODE) \
3485 ? TREE_TYPE (NODE) \
3486 : TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (NODE)))
3487
3488 /* For a pointer-to-member constant `X::Y' this is the RECORD_TYPE for
3489 `X'. */
3490 #define PTRMEM_CST_CLASS(NODE) \
3491 TYPE_PTRMEM_CLASS_TYPE (TREE_TYPE (PTRMEM_CST_CHECK (NODE)))
3492
3493 /* For a pointer-to-member constant `X::Y' this is the _DECL for
3494 `Y'. */
3495 #define PTRMEM_CST_MEMBER(NODE) (((ptrmem_cst_t)PTRMEM_CST_CHECK (NODE))->member)
3496
3497 /* The expression in question for a TYPEOF_TYPE. */
3498 #define TYPEOF_TYPE_EXPR(NODE) (TYPE_VALUES_RAW (TYPEOF_TYPE_CHECK (NODE)))
3499
3500 /* The type in question for an UNDERLYING_TYPE. */
3501 #define UNDERLYING_TYPE_TYPE(NODE) \
3502 (TYPE_VALUES_RAW (UNDERLYING_TYPE_CHECK (NODE)))
3503
3504 /* The type in question for BASES. */
3505 #define BASES_TYPE(NODE) \
3506 (TYPE_VALUES_RAW (BASES_CHECK (NODE)))
3507
3508 #define BASES_DIRECT(NODE) \
3509 TREE_LANG_FLAG_0 (BASES_CHECK (NODE))
3510
3511 /* The expression in question for a DECLTYPE_TYPE. */
3512 #define DECLTYPE_TYPE_EXPR(NODE) (TYPE_VALUES_RAW (DECLTYPE_TYPE_CHECK (NODE)))
3513
3514 /* Whether the DECLTYPE_TYPE_EXPR of NODE was originally parsed as an
3515 id-expression or a member-access expression. When false, it was
3516 parsed as a full expression. */
3517 #define DECLTYPE_TYPE_ID_EXPR_OR_MEMBER_ACCESS_P(NODE) \
3518 (DECLTYPE_TYPE_CHECK (NODE))->type_common.string_flag
3519
3520 /* These flags indicate that we want different semantics from normal
3521 decltype: lambda capture just drops references, lambda proxies look
3522 through implicit dereference. */
3523 #define DECLTYPE_FOR_LAMBDA_CAPTURE(NODE) \
3524 TREE_LANG_FLAG_0 (DECLTYPE_TYPE_CHECK (NODE))
3525 #define DECLTYPE_FOR_LAMBDA_PROXY(NODE) \
3526 TREE_LANG_FLAG_2 (DECLTYPE_TYPE_CHECK (NODE))
3527
3528 /* Nonzero for VAR_DECL and FUNCTION_DECL node means that `extern' was
3529 specified in its declaration. This can also be set for an
3530 erroneously declared PARM_DECL. */
3531 #define DECL_THIS_EXTERN(NODE) \
3532 DECL_LANG_FLAG_2 (VAR_FUNCTION_OR_PARM_DECL_CHECK (NODE))
3533
3534 /* Nonzero for VAR_DECL and FUNCTION_DECL node means that `static' was
3535 specified in its declaration. This can also be set for an
3536 erroneously declared PARM_DECL. */
3537 #define DECL_THIS_STATIC(NODE) \
3538 DECL_LANG_FLAG_6 (VAR_FUNCTION_OR_PARM_DECL_CHECK (NODE))
3539
3540 /* Nonzero for FIELD_DECL node means that this field is a base class
3541 of the parent object, as opposed to a member field. */
3542 #define DECL_FIELD_IS_BASE(NODE) \
3543 DECL_LANG_FLAG_6 (FIELD_DECL_CHECK (NODE))
3544
3545 /* Nonzero for FIELD_DECL node means that this field is a simple (no
3546 explicit initializer) lambda capture field, making it invisible to
3547 name lookup in unevaluated contexts. */
3548 #define DECL_NORMAL_CAPTURE_P(NODE) \
3549 DECL_LANG_FLAG_7 (FIELD_DECL_CHECK (NODE))
3550
3551 /* Nonzero if TYPE is an anonymous union or struct type. We have to use a
3552 flag for this because "A union for which objects or pointers are
3553 declared is not an anonymous union" [class.union]. */
3554 #define ANON_AGGR_TYPE_P(NODE) \
3555 (CLASS_TYPE_P (NODE) && LANG_TYPE_CLASS_CHECK (NODE)->anon_aggr)
3556 #define SET_ANON_AGGR_TYPE_P(NODE) \
3557 (LANG_TYPE_CLASS_CHECK (NODE)->anon_aggr = 1)
3558
3559 /* Nonzero if TYPE is an anonymous union type. */
3560 #define ANON_UNION_TYPE_P(NODE) \
3561 (TREE_CODE (NODE) == UNION_TYPE && ANON_AGGR_TYPE_P (NODE))
3562
3563 /* Define fields and accessors for nodes representing declared names. */
3564
3565 #define TYPE_WAS_ANONYMOUS(NODE) (LANG_TYPE_CLASS_CHECK (NODE)->was_anonymous)
3566
3567 /* C++: all of these are overloaded! These apply only to TYPE_DECLs. */
3568
3569 /* The format of each node in the DECL_FRIENDLIST is as follows:
3570
3571 The TREE_PURPOSE will be the name of a function, i.e., an
3572 IDENTIFIER_NODE. The TREE_VALUE will be itself a TREE_LIST, whose
3573 TREE_VALUEs are friends with the given name. */
3574 #define DECL_FRIENDLIST(NODE) (DECL_INITIAL (NODE))
3575 #define FRIEND_NAME(LIST) (TREE_PURPOSE (LIST))
3576 #define FRIEND_DECLS(LIST) (TREE_VALUE (LIST))
3577
3578 /* The DECL_ACCESS, if non-NULL, is a TREE_LIST. The TREE_PURPOSE of
3579 each node is a type; the TREE_VALUE is the access granted for this
3580 DECL in that type. The DECL_ACCESS is set by access declarations.
3581 For example, if a member that would normally be public in a
3582 derived class is made protected, then the derived class and the
3583 protected_access_node will appear in the DECL_ACCESS for the node. */
3584 #define DECL_ACCESS(NODE) (LANG_DECL_U2_CHECK (NODE, 0)->access)
3585
3586 /* Nonzero if the FUNCTION_DECL is a global constructor. */
3587 #define DECL_GLOBAL_CTOR_P(NODE) \
3588 (LANG_DECL_FN_CHECK (NODE)->global_ctor_p)
3589
3590 /* Nonzero if the FUNCTION_DECL is a global destructor. */
3591 #define DECL_GLOBAL_DTOR_P(NODE) \
3592 (LANG_DECL_FN_CHECK (NODE)->global_dtor_p)
3593
3594 /* Accessor macros for C++ template decl nodes. */
3595
3596 /* The DECL_TEMPLATE_PARMS are a list. The TREE_PURPOSE of each node
3597 is a INT_CST whose TREE_INT_CST_LOW indicates the level of the
3598 template parameters, with 1 being the outermost set of template
3599 parameters. The TREE_VALUE is a vector, whose elements are the
3600 template parameters at each level. Each element in the vector is a
3601 TREE_LIST, whose TREE_VALUE is a PARM_DECL (if the parameter is a
3602 non-type parameter), or a TYPE_DECL (if the parameter is a type
3603 parameter). The TREE_PURPOSE is the default value, if any. The
3604 TEMPLATE_PARM_INDEX for the parameter is available as the
3605 DECL_INITIAL (for a PARM_DECL) or as the TREE_TYPE (for a
3606 TYPE_DECL). */
3607 #define DECL_TEMPLATE_PARMS(NODE) DECL_NON_COMMON_CHECK (NODE)->decl_non_common.arguments
3608 #define DECL_INNERMOST_TEMPLATE_PARMS(NODE) \
3609 INNERMOST_TEMPLATE_PARMS (DECL_TEMPLATE_PARMS (NODE))
3610 #define DECL_NTPARMS(NODE) \
3611 TREE_VEC_LENGTH (DECL_INNERMOST_TEMPLATE_PARMS (NODE))
3612 /* For function, method, class-data templates. */
3613 #define DECL_TEMPLATE_RESULT(NODE) DECL_RESULT_FLD (NODE)
3614 /* For a function template at namespace scope, DECL_TEMPLATE_INSTANTIATIONS
3615 lists all instantiations and specializations of the function so that
3616 tsubst_friend_function can reassign them to another template if we find
3617 that the namespace-scope template is really a partial instantiation of a
3618 friend template.
3619
3620 For a class template the DECL_TEMPLATE_INSTANTIATIONS lists holds
3621 all instantiations and specializations of the class type, including
3622 partial instantiations and partial specializations, so that if we
3623 explicitly specialize a partial instantiation we can walk the list
3624 in maybe_process_partial_specialization and reassign them or complain
3625 as appropriate.
3626
3627 In both cases, the TREE_PURPOSE of each node contains the arguments
3628 used; the TREE_VALUE contains the generated variable. The template
3629 arguments are always complete. For example, given:
3630
3631 template <class T> struct S1 {
3632 template <class U> struct S2 {};
3633 template <class U> struct S2<U*> {};
3634 };
3635
3636 the record for the partial specialization will contain, as its
3637 argument list, { {T}, {U*} }, and will be on the
3638 DECL_TEMPLATE_INSTANTIATIONS list for `template <class T> template
3639 <class U> struct S1<T>::S2'.
3640
3641 This list is not used for other templates. */
3642 #define DECL_TEMPLATE_INSTANTIATIONS(NODE) DECL_VINDEX (NODE)
3643 /* For a class template, this list contains the partial
3644 specializations of this template. (Full specializations are not
3645 recorded on this list.) The TREE_PURPOSE holds the arguments used
3646 in the partial specialization (e.g., for `template <class T> struct
3647 S<T*, int>' this will be `T*'.) The arguments will also include
3648 any outer template arguments. The TREE_VALUE holds the innermost
3649 template parameters for the specialization (e.g., `T' in the
3650 example above.) The TREE_TYPE is the _TYPE node for the partial
3651 specialization.
3652
3653 This list is not used for other templates. */
3654 #define DECL_TEMPLATE_SPECIALIZATIONS(NODE) DECL_SIZE (NODE)
3655
3656 /* Nonzero for a DECL which is actually a template parameter. Keep
3657 these checks in ascending tree code order. */
3658 #define DECL_TEMPLATE_PARM_P(NODE) \
3659 (DECL_LANG_FLAG_0 (NODE) \
3660 && (TREE_CODE (NODE) == CONST_DECL \
3661 || TREE_CODE (NODE) == PARM_DECL \
3662 || TREE_CODE (NODE) == TYPE_DECL \
3663 || TREE_CODE (NODE) == TEMPLATE_DECL))
3664
3665 /* Mark NODE as a template parameter. */
3666 #define SET_DECL_TEMPLATE_PARM_P(NODE) \
3667 (DECL_LANG_FLAG_0 (NODE) = 1)
3668
3669 /* Nonzero if NODE is a template template parameter. */
3670 #define DECL_TEMPLATE_TEMPLATE_PARM_P(NODE) \
3671 (TREE_CODE (NODE) == TEMPLATE_DECL && DECL_TEMPLATE_PARM_P (NODE))
3672
3673 /* Nonzero if NODE is a TEMPLATE_DECL representing an
3674 UNBOUND_CLASS_TEMPLATE tree node. */
3675 #define DECL_UNBOUND_CLASS_TEMPLATE_P(NODE) \
3676 (TREE_CODE (NODE) == TEMPLATE_DECL && !DECL_TEMPLATE_RESULT (NODE))
3677
3678 #define DECL_FUNCTION_TEMPLATE_P(NODE) \
3679 (TREE_CODE (NODE) == TEMPLATE_DECL \
3680 && !DECL_UNBOUND_CLASS_TEMPLATE_P (NODE) \
3681 && TREE_CODE (DECL_TEMPLATE_RESULT (NODE)) == FUNCTION_DECL)
3682
3683 /* Nonzero for a DECL that represents a class template or alias
3684 template. */
3685 #define DECL_TYPE_TEMPLATE_P(NODE) \
3686 (TREE_CODE (NODE) == TEMPLATE_DECL \
3687 && DECL_TEMPLATE_RESULT (NODE) != NULL_TREE \
3688 && TREE_CODE (DECL_TEMPLATE_RESULT (NODE)) == TYPE_DECL)
3689
3690 /* Nonzero for a DECL that represents a class template. */
3691 #define DECL_CLASS_TEMPLATE_P(NODE) \
3692 (DECL_TYPE_TEMPLATE_P (NODE) \
3693 && DECL_IMPLICIT_TYPEDEF_P (DECL_TEMPLATE_RESULT (NODE)))
3694
3695 /* Nonzero for a TEMPLATE_DECL that represents an alias template. */
3696 #define DECL_ALIAS_TEMPLATE_P(NODE) \
3697 (DECL_TYPE_TEMPLATE_P (NODE) \
3698 && !DECL_ARTIFICIAL (DECL_TEMPLATE_RESULT (NODE)))
3699
3700 /* Nonzero for a NODE which declares a type. */
3701 #define DECL_DECLARES_TYPE_P(NODE) \
3702 (TREE_CODE (NODE) == TYPE_DECL || DECL_CLASS_TEMPLATE_P (NODE))
3703
3704 /* Nonzero if NODE declares a function. */
3705 #define DECL_DECLARES_FUNCTION_P(NODE) \
3706 (TREE_CODE (NODE) == FUNCTION_DECL || DECL_FUNCTION_TEMPLATE_P (NODE))
3707
3708 /* Nonzero if NODE is the typedef implicitly generated for a type when
3709 the type is declared. In C++, `struct S {};' is roughly
3710 equivalent to `struct S {}; typedef struct S S;' in C.
3711 DECL_IMPLICIT_TYPEDEF_P will hold for the typedef indicated in this
3712 example. In C++, there is a second implicit typedef for each
3713 class, in the scope of `S' itself, so that you can say `S::S'.
3714 DECL_SELF_REFERENCE_P will hold for that second typedef. */
3715 #define DECL_IMPLICIT_TYPEDEF_P(NODE) \
3716 (TREE_CODE (NODE) == TYPE_DECL && DECL_LANG_FLAG_2 (NODE))
3717 #define SET_DECL_IMPLICIT_TYPEDEF_P(NODE) \
3718 (DECL_LANG_FLAG_2 (NODE) = 1)
3719 #define DECL_SELF_REFERENCE_P(NODE) \
3720 (TREE_CODE (NODE) == TYPE_DECL && DECL_LANG_FLAG_4 (NODE))
3721 #define SET_DECL_SELF_REFERENCE_P(NODE) \
3722 (DECL_LANG_FLAG_4 (NODE) = 1)
3723
3724 /* A `primary' template is one that has its own template header. A
3725 member function of a class template is a template, but not primary.
3726 A member template is primary. Friend templates are primary, too. */
3727
3728 /* Returns the primary template corresponding to these parameters. */
3729 #define DECL_PRIMARY_TEMPLATE(NODE) \
3730 (TREE_TYPE (DECL_INNERMOST_TEMPLATE_PARMS (NODE)))
3731
3732 /* Returns nonzero if NODE is a primary template. */
3733 #define PRIMARY_TEMPLATE_P(NODE) (DECL_PRIMARY_TEMPLATE (NODE) == (NODE))
3734
3735 /* Nonzero iff NODE is a specialization of a template. The value
3736 indicates the type of specializations:
3737
3738 1=implicit instantiation
3739
3740 2=partial or explicit specialization, e.g.:
3741
3742 template <> int min<int> (int, int),
3743
3744 3=explicit instantiation, e.g.:
3745
3746 template int min<int> (int, int);
3747
3748 Note that NODE will be marked as a specialization even if the
3749 template it is instantiating is not a primary template. For
3750 example, given:
3751
3752 template <typename T> struct O {
3753 void f();
3754 struct I {};
3755 };
3756
3757 both O<int>::f and O<int>::I will be marked as instantiations.
3758
3759 If DECL_USE_TEMPLATE is nonzero, then DECL_TEMPLATE_INFO will also
3760 be non-NULL. */
3761 #define DECL_USE_TEMPLATE(NODE) (DECL_LANG_SPECIFIC (NODE)->u.base.use_template)
3762
3763 /* Like DECL_USE_TEMPLATE, but for class types. */
3764 #define CLASSTYPE_USE_TEMPLATE(NODE) \
3765 (LANG_TYPE_CLASS_CHECK (NODE)->use_template)
3766
3767 /* True if NODE is a specialization of a primary template. */
3768 #define CLASSTYPE_SPECIALIZATION_OF_PRIMARY_TEMPLATE_P(NODE) \
3769 (CLASS_TYPE_P (NODE) \
3770 && CLASSTYPE_USE_TEMPLATE (NODE) \
3771 && PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (NODE)))
3772
3773 #define DECL_TEMPLATE_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) & 1)
3774 #define CLASSTYPE_TEMPLATE_INSTANTIATION(NODE) \
3775 (CLASSTYPE_USE_TEMPLATE (NODE) & 1)
3776
3777 #define DECL_TEMPLATE_SPECIALIZATION(NODE) (DECL_USE_TEMPLATE (NODE) == 2)
3778 #define SET_DECL_TEMPLATE_SPECIALIZATION(NODE) (DECL_USE_TEMPLATE (NODE) = 2)
3779
3780 /* Returns true for an explicit or partial specialization of a class
3781 template. */
3782 #define CLASSTYPE_TEMPLATE_SPECIALIZATION(NODE) \
3783 (CLASSTYPE_USE_TEMPLATE (NODE) == 2)
3784 #define SET_CLASSTYPE_TEMPLATE_SPECIALIZATION(NODE) \
3785 (CLASSTYPE_USE_TEMPLATE (NODE) = 2)
3786
3787 #define DECL_IMPLICIT_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) == 1)
3788 #define SET_DECL_IMPLICIT_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) = 1)
3789 #define CLASSTYPE_IMPLICIT_INSTANTIATION(NODE) \
3790 (CLASSTYPE_USE_TEMPLATE (NODE) == 1)
3791 #define SET_CLASSTYPE_IMPLICIT_INSTANTIATION(NODE) \
3792 (CLASSTYPE_USE_TEMPLATE (NODE) = 1)
3793
3794 #define DECL_EXPLICIT_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) == 3)
3795 #define SET_DECL_EXPLICIT_INSTANTIATION(NODE) (DECL_USE_TEMPLATE (NODE) = 3)
3796 #define CLASSTYPE_EXPLICIT_INSTANTIATION(NODE) \
3797 (CLASSTYPE_USE_TEMPLATE (NODE) == 3)
3798 #define SET_CLASSTYPE_EXPLICIT_INSTANTIATION(NODE) \
3799 (CLASSTYPE_USE_TEMPLATE (NODE) = 3)
3800
3801 /* Nonzero if DECL is a friend function which is an instantiation
3802 from the point of view of the compiler, but not from the point of
3803 view of the language. For example given:
3804 template <class T> struct S { friend void f(T) {}; };
3805 the declaration of `void f(int)' generated when S<int> is
3806 instantiated will not be a DECL_TEMPLATE_INSTANTIATION, but will be
3807 a DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION. */
3808 #define DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION(DECL) \
3809 (DECL_TEMPLATE_INFO (DECL) && !DECL_USE_TEMPLATE (DECL))
3810
3811 /* Nonzero if DECL is a function generated from a function 'temploid',
3812 i.e. template, member of class template, or dependent friend. */
3813 #define DECL_TEMPLOID_INSTANTIATION(DECL) \
3814 (DECL_TEMPLATE_INSTANTIATION (DECL) \
3815 || DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION (DECL))
3816
3817 /* Nonzero if DECL is either defined implicitly by the compiler or
3818 generated from a temploid. */
3819 #define DECL_GENERATED_P(DECL) \
3820 (DECL_TEMPLOID_INSTANTIATION (DECL) || DECL_DEFAULTED_FN (DECL))
3821
3822 /* Nonzero iff we are currently processing a declaration for an
3823 entity with its own template parameter list, and which is not a
3824 full specialization. */
3825 #define PROCESSING_REAL_TEMPLATE_DECL_P() \
3826 (processing_template_decl > template_class_depth (current_scope ()))
3827
3828 /* Nonzero if this VAR_DECL or FUNCTION_DECL has already been
3829 instantiated, i.e. its definition has been generated from the
3830 pattern given in the template. */
3831 #define DECL_TEMPLATE_INSTANTIATED(NODE) \
3832 DECL_LANG_FLAG_1 (VAR_OR_FUNCTION_DECL_CHECK (NODE))
3833
3834 /* We know what we're doing with this decl now. */
3835 #define DECL_INTERFACE_KNOWN(NODE) DECL_LANG_FLAG_5 (NODE)
3836
3837 /* DECL_EXTERNAL must be set on a decl until the decl is actually emitted,
3838 so that assemble_external will work properly. So we have this flag to
3839 tell us whether the decl is really not external.
3840
3841 This flag does not indicate whether or not the decl is defined in the
3842 current translation unit; it indicates whether or not we should emit the
3843 decl at the end of compilation if it is defined and needed. */
3844 #define DECL_NOT_REALLY_EXTERN(NODE) \
3845 (DECL_LANG_SPECIFIC (NODE)->u.base.not_really_extern)
3846
3847 #define DECL_REALLY_EXTERN(NODE) \
3848 (DECL_EXTERNAL (NODE) && ! DECL_NOT_REALLY_EXTERN (NODE))
3849
3850 /* A thunk is a stub function.
3851
3852 A thunk is an alternate entry point for an ordinary FUNCTION_DECL.
3853 The address of the ordinary FUNCTION_DECL is given by the
3854 DECL_INITIAL, which is always an ADDR_EXPR whose operand is a
3855 FUNCTION_DECL. The job of the thunk is to either adjust the this
3856 pointer before transferring control to the FUNCTION_DECL, or call
3857 FUNCTION_DECL and then adjust the result value. Note, the result
3858 pointer adjusting thunk must perform a call to the thunked
3859 function, (or be implemented via passing some invisible parameter
3860 to the thunked function, which is modified to perform the
3861 adjustment just before returning).
3862
3863 A thunk may perform either, or both, of the following operations:
3864
3865 o Adjust the this or result pointer by a constant offset.
3866 o Adjust the this or result pointer by looking up a vcall or vbase offset
3867 in the vtable.
3868
3869 A this pointer adjusting thunk converts from a base to a derived
3870 class, and hence adds the offsets. A result pointer adjusting thunk
3871 converts from a derived class to a base, and hence subtracts the
3872 offsets. If both operations are performed, then the constant
3873 adjustment is performed first for this pointer adjustment and last
3874 for the result pointer adjustment.
3875
3876 The constant adjustment is given by THUNK_FIXED_OFFSET. If the
3877 vcall or vbase offset is required, THUNK_VIRTUAL_OFFSET is
3878 used. For this pointer adjusting thunks, it is the vcall offset
3879 into the vtable. For result pointer adjusting thunks it is the
3880 binfo of the virtual base to convert to. Use that binfo's vbase
3881 offset.
3882
3883 It is possible to have equivalent covariant thunks. These are
3884 distinct virtual covariant thunks whose vbase offsets happen to
3885 have the same value. THUNK_ALIAS is used to pick one as the
3886 canonical thunk, which will get all the this pointer adjusting
3887 thunks attached to it. */
3888
3889 /* An integer indicating how many bytes should be subtracted from the
3890 this or result pointer when this function is called. */
3891 #define THUNK_FIXED_OFFSET(DECL) \
3892 (DECL_LANG_SPECIFIC (THUNK_FUNCTION_CHECK (DECL))->u.fn.u5.fixed_offset)
3893
3894 /* A tree indicating how to perform the virtual adjustment. For a this
3895 adjusting thunk it is the number of bytes to be added to the vtable
3896 to find the vcall offset. For a result adjusting thunk, it is the
3897 binfo of the relevant virtual base. If NULL, then there is no
3898 virtual adjust. (The vptr is always located at offset zero from
3899 the this or result pointer.) (If the covariant type is within the
3900 class hierarchy being laid out, the vbase index is not yet known
3901 at the point we need to create the thunks, hence the need to use
3902 binfos.) */
3903
3904 #define THUNK_VIRTUAL_OFFSET(DECL) \
3905 (LANG_DECL_U2_CHECK (FUNCTION_DECL_CHECK (DECL), 0)->access)
3906
3907 /* A thunk which is equivalent to another thunk. */
3908 #define THUNK_ALIAS(DECL) \
3909 (DECL_LANG_SPECIFIC (FUNCTION_DECL_CHECK (DECL))->u.min.template_info)
3910
3911 /* For thunk NODE, this is the FUNCTION_DECL thunked to. It is
3912 possible for the target to be a thunk too. */
3913 #define THUNK_TARGET(NODE) \
3914 (LANG_DECL_FN_CHECK (NODE)->befriending_classes)
3915
3916 /* True for a SCOPE_REF iff the "template" keyword was used to
3917 indicate that the qualified name denotes a template. */
3918 #define QUALIFIED_NAME_IS_TEMPLATE(NODE) \
3919 (TREE_LANG_FLAG_1 (SCOPE_REF_CHECK (NODE)))
3920
3921 /* True for an OMP_ATOMIC that has dependent parameters. These are stored
3922 as an expr in operand 1, and integer_zero_node in operand 0. */
3923 #define OMP_ATOMIC_DEPENDENT_P(NODE) \
3924 (TREE_CODE (TREE_OPERAND (OMP_ATOMIC_CHECK (NODE), 0)) == INTEGER_CST)
3925
3926 /* Used while gimplifying continue statements bound to OMP_FOR nodes. */
3927 #define OMP_FOR_GIMPLIFYING_P(NODE) \
3928 (TREE_LANG_FLAG_0 (OMP_FOR_CHECK (NODE)))
3929
3930 /* A language-specific token attached to the OpenMP data clauses to
3931 hold code (or code fragments) related to ctors, dtors, and op=.
3932 See semantics.c for details. */
3933 #define CP_OMP_CLAUSE_INFO(NODE) \
3934 TREE_TYPE (OMP_CLAUSE_RANGE_CHECK (NODE, OMP_CLAUSE_PRIVATE, \
3935 OMP_CLAUSE_COPYPRIVATE))
3936
3937 /* Nonzero if this transaction expression's body contains statements. */
3938 #define TRANSACTION_EXPR_IS_STMT(NODE) \
3939 TREE_LANG_FLAG_0 (TRANSACTION_EXPR_CHECK (NODE))
3940
3941 /* These macros provide convenient access to the various _STMT nodes
3942 created when parsing template declarations. */
3943 #define TRY_STMTS(NODE) TREE_OPERAND (TRY_BLOCK_CHECK (NODE), 0)
3944 #define TRY_HANDLERS(NODE) TREE_OPERAND (TRY_BLOCK_CHECK (NODE), 1)
3945
3946 #define EH_SPEC_STMTS(NODE) TREE_OPERAND (EH_SPEC_BLOCK_CHECK (NODE), 0)
3947 #define EH_SPEC_RAISES(NODE) TREE_OPERAND (EH_SPEC_BLOCK_CHECK (NODE), 1)
3948
3949 #define USING_STMT_NAMESPACE(NODE) TREE_OPERAND (USING_STMT_CHECK (NODE), 0)
3950
3951 /* Nonzero if this try block is a function try block. */
3952 #define FN_TRY_BLOCK_P(NODE) TREE_LANG_FLAG_3 (TRY_BLOCK_CHECK (NODE))
3953 #define HANDLER_PARMS(NODE) TREE_OPERAND (HANDLER_CHECK (NODE), 0)
3954 #define HANDLER_BODY(NODE) TREE_OPERAND (HANDLER_CHECK (NODE), 1)
3955 #define HANDLER_TYPE(NODE) TREE_TYPE (HANDLER_CHECK (NODE))
3956
3957 /* CLEANUP_STMT accessors. The statement(s) covered, the cleanup to run
3958 and the VAR_DECL for which this cleanup exists. */
3959 #define CLEANUP_BODY(NODE) TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 0)
3960 #define CLEANUP_EXPR(NODE) TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 1)
3961 #define CLEANUP_DECL(NODE) TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 2)
3962
3963 /* IF_STMT accessors. These give access to the condition of the if
3964 statement, the then block of the if statement, and the else block
3965 of the if statement if it exists. */
3966 #define IF_COND(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 0)
3967 #define THEN_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 1)
3968 #define ELSE_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 2)
3969 #define IF_SCOPE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 3)
3970
3971 /* WHILE_STMT accessors. These give access to the condition of the
3972 while statement and the body of the while statement, respectively. */
3973 #define WHILE_COND(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 0)
3974 #define WHILE_BODY(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 1)
3975
3976 /* DO_STMT accessors. These give access to the condition of the do
3977 statement and the body of the do statement, respectively. */
3978 #define DO_COND(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 0)
3979 #define DO_BODY(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 1)
3980
3981 /* FOR_STMT accessors. These give access to the init statement,
3982 condition, update expression, and body of the for statement,
3983 respectively. */
3984 #define FOR_INIT_STMT(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 0)
3985 #define FOR_COND(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 1)
3986 #define FOR_EXPR(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 2)
3987 #define FOR_BODY(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 3)
3988 #define FOR_SCOPE(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 4)
3989
3990 /* RANGE_FOR_STMT accessors. These give access to the declarator,
3991 expression, body, and scope of the statement, respectively. */
3992 #define RANGE_FOR_DECL(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 0)
3993 #define RANGE_FOR_EXPR(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 1)
3994 #define RANGE_FOR_BODY(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 2)
3995 #define RANGE_FOR_SCOPE(NODE) TREE_OPERAND (RANGE_FOR_STMT_CHECK (NODE), 3)
3996
3997 #define SWITCH_STMT_COND(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 0)
3998 #define SWITCH_STMT_BODY(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 1)
3999 #define SWITCH_STMT_TYPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 2)
4000 #define SWITCH_STMT_SCOPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 3)
4001
4002 /* STMT_EXPR accessor. */
4003 #define STMT_EXPR_STMT(NODE) TREE_OPERAND (STMT_EXPR_CHECK (NODE), 0)
4004
4005 /* EXPR_STMT accessor. This gives the expression associated with an
4006 expression statement. */
4007 #define EXPR_STMT_EXPR(NODE) TREE_OPERAND (EXPR_STMT_CHECK (NODE), 0)
4008
4009 /* True if this TARGET_EXPR was created by build_cplus_new, and so we can
4010 discard it if it isn't useful. */
4011 #define TARGET_EXPR_IMPLICIT_P(NODE) \
4012 TREE_LANG_FLAG_0 (TARGET_EXPR_CHECK (NODE))
4013
4014 /* True if this TARGET_EXPR is the result of list-initialization of a
4015 temporary. */
4016 #define TARGET_EXPR_LIST_INIT_P(NODE) \
4017 TREE_LANG_FLAG_1 (TARGET_EXPR_CHECK (NODE))
4018
4019 /* True if this TARGET_EXPR expresses direct-initialization of an object
4020 to be named later. */
4021 #define TARGET_EXPR_DIRECT_INIT_P(NODE) \
4022 TREE_LANG_FLAG_2 (TARGET_EXPR_CHECK (NODE))
4023
4024 /* True if EXPR expresses direct-initialization of a TYPE. */
4025 #define DIRECT_INIT_EXPR_P(TYPE,EXPR) \
4026 (TREE_CODE (EXPR) == TARGET_EXPR && TREE_LANG_FLAG_2 (EXPR) \
4027 && same_type_ignoring_top_level_qualifiers_p (TYPE, TREE_TYPE (EXPR)))
4028
4029 /* True if this CONVERT_EXPR is for a conversion to virtual base in
4030 an NSDMI, and should be re-evaluated when used in a constructor. */
4031 #define CONVERT_EXPR_VBASE_PATH(NODE) \
4032 TREE_LANG_FLAG_0 (CONVERT_EXPR_CHECK (NODE))
4033
4034 /* An enumeration of the kind of tags that C++ accepts. */
4035 enum tag_types {
4036 none_type = 0, /* Not a tag type. */
4037 record_type, /* "struct" types. */
4038 class_type, /* "class" types. */
4039 union_type, /* "union" types. */
4040 enum_type, /* "enum" types. */
4041 typename_type /* "typename" types. */
4042 };
4043
4044 /* The various kinds of lvalues we distinguish. */
4045 enum cp_lvalue_kind_flags {
4046 clk_none = 0, /* Things that are not an lvalue. */
4047 clk_ordinary = 1, /* An ordinary lvalue. */
4048 clk_rvalueref = 2,/* An rvalue formed using an rvalue reference */
4049 clk_class = 4, /* An rvalue of class-type. */
4050 clk_bitfield = 8, /* An lvalue for a bit-field. */
4051 clk_packed = 16 /* An lvalue for a packed field. */
4052 };
4053
4054 /* This type is used for parameters and variables which hold
4055 combinations of the flags in enum cp_lvalue_kind_flags. */
4056 typedef int cp_lvalue_kind;
4057
4058 /* Various kinds of template specialization, instantiation, etc. */
4059 typedef enum tmpl_spec_kind {
4060 tsk_none, /* Not a template at all. */
4061 tsk_invalid_member_spec, /* An explicit member template
4062 specialization, but the enclosing
4063 classes have not all been explicitly
4064 specialized. */
4065 tsk_invalid_expl_inst, /* An explicit instantiation containing
4066 template parameter lists. */
4067 tsk_excessive_parms, /* A template declaration with too many
4068 template parameter lists. */
4069 tsk_insufficient_parms, /* A template declaration with too few
4070 parameter lists. */
4071 tsk_template, /* A template declaration. */
4072 tsk_expl_spec, /* An explicit specialization. */
4073 tsk_expl_inst /* An explicit instantiation. */
4074 } tmpl_spec_kind;
4075
4076 /* The various kinds of access. BINFO_ACCESS depends on these being
4077 two bit quantities. The numerical values are important; they are
4078 used to initialize RTTI data structures, so changing them changes
4079 the ABI. */
4080 typedef enum access_kind {
4081 ak_none = 0, /* Inaccessible. */
4082 ak_public = 1, /* Accessible, as a `public' thing. */
4083 ak_protected = 2, /* Accessible, as a `protected' thing. */
4084 ak_private = 3 /* Accessible, as a `private' thing. */
4085 } access_kind;
4086
4087 /* The various kinds of special functions. If you add to this list,
4088 you should update special_function_p as well. */
4089 typedef enum special_function_kind {
4090 sfk_none = 0, /* Not a special function. This enumeral
4091 must have value zero; see
4092 special_function_p. */
4093 sfk_constructor, /* A constructor. */
4094 sfk_copy_constructor, /* A copy constructor. */
4095 sfk_move_constructor, /* A move constructor. */
4096 sfk_copy_assignment, /* A copy assignment operator. */
4097 sfk_move_assignment, /* A move assignment operator. */
4098 sfk_destructor, /* A destructor. */
4099 sfk_complete_destructor, /* A destructor for complete objects. */
4100 sfk_base_destructor, /* A destructor for base subobjects. */
4101 sfk_deleting_destructor, /* A destructor for complete objects that
4102 deletes the object after it has been
4103 destroyed. */
4104 sfk_conversion /* A conversion operator. */
4105 } special_function_kind;
4106
4107 /* The various kinds of linkage. From [basic.link],
4108
4109 A name is said to have linkage when it might denote the same
4110 object, reference, function, type, template, namespace or value
4111 as a name introduced in another scope:
4112
4113 -- When a name has external linkage, the entity it denotes can
4114 be referred to from scopes of other translation units or from
4115 other scopes of the same translation unit.
4116
4117 -- When a name has internal linkage, the entity it denotes can
4118 be referred to by names from other scopes in the same
4119 translation unit.
4120
4121 -- When a name has no linkage, the entity it denotes cannot be
4122 referred to by names from other scopes. */
4123
4124 typedef enum linkage_kind {
4125 lk_none, /* No linkage. */
4126 lk_internal, /* Internal linkage. */
4127 lk_external /* External linkage. */
4128 } linkage_kind;
4129
4130 typedef enum duration_kind {
4131 dk_static,
4132 dk_thread,
4133 dk_auto,
4134 dk_dynamic
4135 } duration_kind;
4136
4137 /* Bitmask flags to control type substitution. */
4138 enum tsubst_flags {
4139 tf_none = 0, /* nothing special */
4140 tf_error = 1 << 0, /* give error messages */
4141 tf_warning = 1 << 1, /* give warnings too */
4142 tf_ignore_bad_quals = 1 << 2, /* ignore bad cvr qualifiers */
4143 tf_keep_type_decl = 1 << 3, /* retain typedef type decls
4144 (make_typename_type use) */
4145 tf_ptrmem_ok = 1 << 4, /* pointers to member ok (internal
4146 instantiate_type use) */
4147 tf_user = 1 << 5, /* found template must be a user template
4148 (lookup_template_class use) */
4149 tf_conv = 1 << 6, /* We are determining what kind of
4150 conversion might be permissible,
4151 not actually performing the
4152 conversion. */
4153 tf_no_access_control = 1 << 7, /* Do not perform access checks, even
4154 when issuing other errors. */
4155 /* Convenient substitution flags combinations. */
4156 tf_warning_or_error = tf_warning | tf_error
4157 };
4158
4159 /* This type is used for parameters and variables which hold
4160 combinations of the flags in enum tsubst_flags. */
4161 typedef int tsubst_flags_t;
4162
4163 /* The kind of checking we can do looking in a class hierarchy. */
4164 enum base_access_flags {
4165 ba_any = 0, /* Do not check access, allow an ambiguous base,
4166 prefer a non-virtual base */
4167 ba_unique = 1 << 0, /* Must be a unique base. */
4168 ba_check_bit = 1 << 1, /* Check access. */
4169 ba_check = ba_unique | ba_check_bit,
4170 ba_ignore_scope = 1 << 2, /* Ignore access allowed by local scope. */
4171 ba_quiet = 1 << 3 /* Do not issue error messages. */
4172 };
4173
4174 /* This type is used for parameters and variables which hold
4175 combinations of the flags in enum base_access_flags. */
4176 typedef int base_access;
4177
4178 /* The various kinds of access check during parsing. */
4179 typedef enum deferring_kind {
4180 dk_no_deferred = 0, /* Check access immediately */
4181 dk_deferred = 1, /* Deferred check */
4182 dk_no_check = 2 /* No access check */
4183 } deferring_kind;
4184
4185 /* The kind of base we can find, looking in a class hierarchy.
4186 Values <0 indicate we failed. */
4187 typedef enum base_kind {
4188 bk_inaccessible = -3, /* The base is inaccessible */
4189 bk_ambig = -2, /* The base is ambiguous */
4190 bk_not_base = -1, /* It is not a base */
4191 bk_same_type = 0, /* It is the same type */
4192 bk_proper_base = 1, /* It is a proper base */
4193 bk_via_virtual = 2 /* It is a proper base, but via a virtual
4194 path. This might not be the canonical
4195 binfo. */
4196 } base_kind;
4197
4198 /* Node for "pointer to (virtual) function".
4199 This may be distinct from ptr_type_node so gdb can distinguish them. */
4200 #define vfunc_ptr_type_node vtable_entry_type
4201
4202
4203 /* For building calls to `delete'. */
4204 extern GTY(()) tree integer_two_node;
4205
4206 /* The number of function bodies which we are currently processing.
4207 (Zero if we are at namespace scope, one inside the body of a
4208 function, two inside the body of a function in a local class, etc.) */
4209 extern int function_depth;
4210
4211 /* Nonzero if we are inside eq_specializations, which affects comparison of
4212 PARM_DECLs in cp_tree_equal. */
4213 extern int comparing_specializations;
4214
4215 /* In parser.c. */
4216
4217 /* Nonzero if we are parsing an unevaluated operand: an operand to
4218 sizeof, typeof, or alignof. This is a count since operands to
4219 sizeof can be nested. */
4220
4221 extern int cp_unevaluated_operand;
4222 extern tree cp_convert_range_for (tree, tree, tree);
4223
4224 /* in pt.c */
4225
4226 /* These values are used for the `STRICT' parameter to type_unification and
4227 fn_type_unification. Their meanings are described with the
4228 documentation for fn_type_unification. */
4229
4230 typedef enum unification_kind_t {
4231 DEDUCE_CALL,
4232 DEDUCE_CONV,
4233 DEDUCE_EXACT
4234 } unification_kind_t;
4235
4236 /* in class.c */
4237
4238 extern int current_class_depth;
4239
4240 /* An array of all local classes present in this translation unit, in
4241 declaration order. */
4242 extern GTY(()) VEC(tree,gc) *local_classes;
4243
4244 /* Here's where we control how name mangling takes place. */
4245
4246 /* Cannot use '$' up front, because this confuses gdb
4247 (names beginning with '$' are gdb-local identifiers).
4248
4249 Note that all forms in which the '$' is significant are long enough
4250 for direct indexing (meaning that if we know there is a '$'
4251 at a particular location, we can index into the string at
4252 any other location that provides distinguishing characters). */
4253
4254 /* Define NO_DOT_IN_LABEL in your favorite tm file if your assembler
4255 doesn't allow '.' in symbol names. */
4256 #ifndef NO_DOT_IN_LABEL
4257
4258 #define JOINER '.'
4259
4260 #define AUTO_TEMP_NAME "_.tmp_"
4261 #define VFIELD_BASE ".vf"
4262 #define VFIELD_NAME "_vptr."
4263 #define VFIELD_NAME_FORMAT "_vptr.%s"
4264
4265 #define ANON_AGGRNAME_FORMAT "._%d"
4266
4267 #else /* NO_DOT_IN_LABEL */
4268
4269 #ifndef NO_DOLLAR_IN_LABEL
4270
4271 #define JOINER '$'
4272
4273 #define AUTO_TEMP_NAME "_$tmp_"
4274 #define VFIELD_BASE "$vf"
4275 #define VFIELD_NAME "_vptr$"
4276 #define VFIELD_NAME_FORMAT "_vptr$%s"
4277 #define ANON_AGGRNAME_FORMAT "$_%d"
4278
4279 #else /* NO_DOLLAR_IN_LABEL */
4280
4281 #define IN_CHARGE_NAME "__in_chrg"
4282 #define AUTO_TEMP_NAME "__tmp_"
4283 #define TEMP_NAME_P(ID_NODE) \
4284 (!strncmp (IDENTIFIER_POINTER (ID_NODE), AUTO_TEMP_NAME, \
4285 sizeof (AUTO_TEMP_NAME) - 1))
4286 #define VTABLE_NAME "__vt_"
4287 #define VTABLE_NAME_P(ID_NODE) \
4288 (!strncmp (IDENTIFIER_POINTER (ID_NODE), VTABLE_NAME, \
4289 sizeof (VTABLE_NAME) - 1))
4290 #define VFIELD_BASE "__vfb"
4291 #define VFIELD_NAME "__vptr_"
4292 #define VFIELD_NAME_P(ID_NODE) \
4293 (!strncmp (IDENTIFIER_POINTER (ID_NODE), VFIELD_NAME, \
4294 sizeof (VFIELD_NAME) - 1))
4295 #define VFIELD_NAME_FORMAT "__vptr_%s"
4296
4297 #define ANON_AGGRNAME_PREFIX "__anon_"
4298 #define ANON_AGGRNAME_P(ID_NODE) \
4299 (!strncmp (IDENTIFIER_POINTER (ID_NODE), ANON_AGGRNAME_PREFIX, \
4300 sizeof (ANON_AGGRNAME_PREFIX) - 1))
4301 #define ANON_AGGRNAME_FORMAT "__anon_%d"
4302
4303 #endif /* NO_DOLLAR_IN_LABEL */
4304 #endif /* NO_DOT_IN_LABEL */
4305
4306 #define THIS_NAME "this"
4307
4308 #define IN_CHARGE_NAME "__in_chrg"
4309
4310 #define VTBL_PTR_TYPE "__vtbl_ptr_type"
4311 #define VTABLE_DELTA_NAME "__delta"
4312 #define VTABLE_PFN_NAME "__pfn"
4313
4314 #define LAMBDANAME_PREFIX "__lambda"
4315 #define LAMBDANAME_FORMAT LAMBDANAME_PREFIX "%d"
4316 #define LAMBDANAME_P(ID_NODE) \
4317 (!strncmp (IDENTIFIER_POINTER (ID_NODE), \
4318 LAMBDANAME_PREFIX, \
4319 sizeof (LAMBDANAME_PREFIX) - 1))
4320
4321 #define UDLIT_OP_ANSI_PREFIX "operator\"\" "
4322 #define UDLIT_OP_ANSI_FORMAT UDLIT_OP_ANSI_PREFIX "%s"
4323 #define UDLIT_OP_MANGLED_PREFIX "li"
4324 #define UDLIT_OP_MANGLED_FORMAT UDLIT_OP_MANGLED_PREFIX "%s"
4325 #define UDLIT_OPER_P(ID_NODE) \
4326 (!strncmp (IDENTIFIER_POINTER (ID_NODE), \
4327 UDLIT_OP_ANSI_PREFIX, \
4328 sizeof (UDLIT_OP_ANSI_PREFIX) - 1))
4329 #define UDLIT_OP_SUFFIX(ID_NODE) \
4330 (IDENTIFIER_POINTER (ID_NODE) + sizeof (UDLIT_OP_ANSI_PREFIX) - 1)
4331
4332 #if !defined(NO_DOLLAR_IN_LABEL) || !defined(NO_DOT_IN_LABEL)
4333
4334 #define VTABLE_NAME_P(ID_NODE) (IDENTIFIER_POINTER (ID_NODE)[1] == 'v' \
4335 && IDENTIFIER_POINTER (ID_NODE)[2] == 't' \
4336 && IDENTIFIER_POINTER (ID_NODE)[3] == JOINER)
4337
4338 #define TEMP_NAME_P(ID_NODE) \
4339 (!strncmp (IDENTIFIER_POINTER (ID_NODE), AUTO_TEMP_NAME, sizeof (AUTO_TEMP_NAME)-1))
4340 #define VFIELD_NAME_P(ID_NODE) \
4341 (!strncmp (IDENTIFIER_POINTER (ID_NODE), VFIELD_NAME, sizeof(VFIELD_NAME)-1))
4342
4343 /* For anonymous aggregate types, we need some sort of name to
4344 hold on to. In practice, this should not appear, but it should
4345 not be harmful if it does. */
4346 #define ANON_AGGRNAME_P(ID_NODE) (IDENTIFIER_POINTER (ID_NODE)[0] == JOINER \
4347 && IDENTIFIER_POINTER (ID_NODE)[1] == '_')
4348 #endif /* !defined(NO_DOLLAR_IN_LABEL) || !defined(NO_DOT_IN_LABEL) */
4349
4350
4351 /* Nonzero if we're done parsing and into end-of-file activities. */
4352
4353 extern int at_eof;
4354
4355 /* A list of namespace-scope objects which have constructors or
4356 destructors which reside in the global scope. The decl is stored
4357 in the TREE_VALUE slot and the initializer is stored in the
4358 TREE_PURPOSE slot. */
4359 extern GTY(()) tree static_aggregates;
4360
4361 enum overload_flags { NO_SPECIAL = 0, DTOR_FLAG, TYPENAME_FLAG };
4362
4363 /* These are uses as bits in flags passed to various functions to
4364 control their behavior. Despite the LOOKUP_ prefix, many of these
4365 do not control name lookup. ??? Functions using these flags should
4366 probably be modified to accept explicit boolean flags for the
4367 behaviors relevant to them. */
4368 /* Check for access violations. */
4369 #define LOOKUP_PROTECT (1 << 0)
4370 /* Complain if no suitable member function matching the arguments is
4371 found. */
4372 #define LOOKUP_COMPLAIN (1 << 1)
4373 #define LOOKUP_NORMAL (LOOKUP_PROTECT | LOOKUP_COMPLAIN)
4374 /* Even if the function found by lookup is a virtual function, it
4375 should be called directly. */
4376 #define LOOKUP_NONVIRTUAL (1 << 2)
4377 /* Non-converting (i.e., "explicit") constructors are not tried. This flag
4378 indicates that we are not performing direct-initialization. */
4379 #define LOOKUP_ONLYCONVERTING (1 << 3)
4380 #define LOOKUP_IMPLICIT (LOOKUP_NORMAL | LOOKUP_ONLYCONVERTING)
4381 /* If a temporary is created, it should be created so that it lives
4382 as long as the current variable bindings; otherwise it only lives
4383 until the end of the complete-expression. It also forces
4384 direct-initialization in cases where other parts of the compiler
4385 have already generated a temporary, such as reference
4386 initialization and the catch parameter. */
4387 #define DIRECT_BIND (1 << 4)
4388 /* We're performing a user-defined conversion, so more user-defined
4389 conversions are not permitted (only built-in conversions). */
4390 #define LOOKUP_NO_CONVERSION (1 << 5)
4391 /* The user has explicitly called a destructor. (Therefore, we do
4392 not need to check that the object is non-NULL before calling the
4393 destructor.) */
4394 #define LOOKUP_DESTRUCTOR (1 << 6)
4395 /* Do not permit references to bind to temporaries. */
4396 #define LOOKUP_NO_TEMP_BIND (1 << 7)
4397 /* Do not accept objects, and possibly namespaces. */
4398 #define LOOKUP_PREFER_TYPES (1 << 8)
4399 /* Do not accept objects, and possibly types. */
4400 #define LOOKUP_PREFER_NAMESPACES (1 << 9)
4401 /* Accept types or namespaces. */
4402 #define LOOKUP_PREFER_BOTH (LOOKUP_PREFER_TYPES | LOOKUP_PREFER_NAMESPACES)
4403 /* Return friend declarations and un-declared builtin functions.
4404 (Normally, these entities are registered in the symbol table, but
4405 not found by lookup.) */
4406 #define LOOKUP_HIDDEN (LOOKUP_PREFER_NAMESPACES << 1)
4407 /* Prefer that the lvalue be treated as an rvalue. */
4408 #define LOOKUP_PREFER_RVALUE (LOOKUP_HIDDEN << 1)
4409 /* We're inside an init-list, so narrowing conversions are ill-formed. */
4410 #define LOOKUP_NO_NARROWING (LOOKUP_PREFER_RVALUE << 1)
4411 /* We're looking up a constructor for list-initialization. */
4412 #define LOOKUP_LIST_INIT_CTOR (LOOKUP_NO_NARROWING << 1)
4413 /* This is the first parameter of a copy constructor. */
4414 #define LOOKUP_COPY_PARM (LOOKUP_LIST_INIT_CTOR << 1)
4415 /* We only want to consider list constructors. */
4416 #define LOOKUP_LIST_ONLY (LOOKUP_COPY_PARM << 1)
4417 /* Return after determining which function to call and checking access.
4418 Used by sythesized_method_walk to determine which functions will
4419 be called to initialize subobjects, in order to determine exception
4420 specification and possible implicit delete.
4421 This is kind of a hack, but since access control doesn't respect SFINAE
4422 we can't just use tf_none to avoid access control errors, we need
4423 another mechanism. Exiting early also avoids problems with trying
4424 to perform argument conversions when the class isn't complete yet. */
4425 #define LOOKUP_SPECULATIVE (LOOKUP_LIST_ONLY << 1)
4426 /* Used by calls from defaulted functions to limit the overload set to avoid
4427 cycles trying to declare them (core issue 1092). */
4428 #define LOOKUP_DEFAULTED (LOOKUP_SPECULATIVE << 1)
4429 /* Used in calls to store_init_value to suppress its usual call to
4430 digest_init. */
4431 #define LOOKUP_ALREADY_DIGESTED (LOOKUP_DEFAULTED << 1)
4432 /* An instantiation with explicit template arguments. */
4433 #define LOOKUP_EXPLICIT_TMPL_ARGS (LOOKUP_ALREADY_DIGESTED << 1)
4434 /* Like LOOKUP_NO_TEMP_BIND, but also prevent binding to xvalues. */
4435 #define LOOKUP_NO_RVAL_BIND (LOOKUP_EXPLICIT_TMPL_ARGS << 1)
4436
4437 #define LOOKUP_NAMESPACES_ONLY(F) \
4438 (((F) & LOOKUP_PREFER_NAMESPACES) && !((F) & LOOKUP_PREFER_TYPES))
4439 #define LOOKUP_TYPES_ONLY(F) \
4440 (!((F) & LOOKUP_PREFER_NAMESPACES) && ((F) & LOOKUP_PREFER_TYPES))
4441 #define LOOKUP_QUALIFIERS_ONLY(F) ((F) & LOOKUP_PREFER_BOTH)
4442
4443
4444 /* These flags are used by the conversion code.
4445 CONV_IMPLICIT : Perform implicit conversions (standard and user-defined).
4446 CONV_STATIC : Perform the explicit conversions for static_cast.
4447 CONV_CONST : Perform the explicit conversions for const_cast.
4448 CONV_REINTERPRET: Perform the explicit conversions for reinterpret_cast.
4449 CONV_PRIVATE : Perform upcasts to private bases.
4450 CONV_FORCE_TEMP : Require a new temporary when converting to the same
4451 aggregate type. */
4452
4453 #define CONV_IMPLICIT 1
4454 #define CONV_STATIC 2
4455 #define CONV_CONST 4
4456 #define CONV_REINTERPRET 8
4457 #define CONV_PRIVATE 16
4458 /* #define CONV_NONCONVERTING 32 */
4459 #define CONV_FORCE_TEMP 64
4460 #define CONV_OLD_CONVERT (CONV_IMPLICIT | CONV_STATIC | CONV_CONST \
4461 | CONV_REINTERPRET)
4462 #define CONV_C_CAST (CONV_IMPLICIT | CONV_STATIC | CONV_CONST \
4463 | CONV_REINTERPRET | CONV_PRIVATE | CONV_FORCE_TEMP)
4464
4465 /* Used by build_expr_type_conversion to indicate which types are
4466 acceptable as arguments to the expression under consideration. */
4467
4468 #define WANT_INT 1 /* integer types, including bool */
4469 #define WANT_FLOAT 2 /* floating point types */
4470 #define WANT_ENUM 4 /* enumerated types */
4471 #define WANT_POINTER 8 /* pointer types */
4472 #define WANT_NULL 16 /* null pointer constant */
4473 #define WANT_VECTOR_OR_COMPLEX 32 /* vector or complex types */
4474 #define WANT_ARITH (WANT_INT | WANT_FLOAT | WANT_VECTOR_OR_COMPLEX)
4475
4476 /* Used with comptypes, and related functions, to guide type
4477 comparison. */
4478
4479 #define COMPARE_STRICT 0 /* Just check if the types are the
4480 same. */
4481 #define COMPARE_BASE 1 /* Check to see if the second type is
4482 derived from the first. */
4483 #define COMPARE_DERIVED 2 /* Like COMPARE_BASE, but in
4484 reverse. */
4485 #define COMPARE_REDECLARATION 4 /* The comparison is being done when
4486 another declaration of an existing
4487 entity is seen. */
4488 #define COMPARE_STRUCTURAL 8 /* The comparison is intended to be
4489 structural. The actual comparison
4490 will be identical to
4491 COMPARE_STRICT. */
4492
4493 /* Used with push_overloaded_decl. */
4494 #define PUSH_GLOBAL 0 /* Push the DECL into namespace scope,
4495 regardless of the current scope. */
4496 #define PUSH_LOCAL 1 /* Push the DECL into the current
4497 scope. */
4498 #define PUSH_USING 2 /* We are pushing this DECL as the
4499 result of a using declaration. */
4500
4501 /* Used with start function. */
4502 #define SF_DEFAULT 0 /* No flags. */
4503 #define SF_PRE_PARSED 1 /* The function declaration has
4504 already been parsed. */
4505 #define SF_INCLASS_INLINE 2 /* The function is an inline, defined
4506 in the class body. */
4507
4508 /* Used with start_decl's initialized parameter. */
4509 #define SD_UNINITIALIZED 0
4510 #define SD_INITIALIZED 1
4511 #define SD_DEFAULTED 2
4512 #define SD_DELETED 3
4513
4514 /* Returns nonzero iff TYPE1 and TYPE2 are the same type, or if TYPE2
4515 is derived from TYPE1, or if TYPE2 is a pointer (reference) to a
4516 class derived from the type pointed to (referred to) by TYPE1. */
4517 #define same_or_base_type_p(TYPE1, TYPE2) \
4518 comptypes ((TYPE1), (TYPE2), COMPARE_BASE)
4519
4520 /* These macros are used to access a TEMPLATE_PARM_INDEX. */
4521 #define TEMPLATE_PARM_INDEX_CAST(NODE) \
4522 ((template_parm_index*)TEMPLATE_PARM_INDEX_CHECK (NODE))
4523 #define TEMPLATE_PARM_IDX(NODE) (TEMPLATE_PARM_INDEX_CAST (NODE)->index)
4524 #define TEMPLATE_PARM_LEVEL(NODE) (TEMPLATE_PARM_INDEX_CAST (NODE)->level)
4525 #define TEMPLATE_PARM_DESCENDANTS(NODE) (TREE_CHAIN (NODE))
4526 #define TEMPLATE_PARM_ORIG_LEVEL(NODE) (TEMPLATE_PARM_INDEX_CAST (NODE)->orig_level)
4527 #define TEMPLATE_PARM_DECL(NODE) (TEMPLATE_PARM_INDEX_CAST (NODE)->decl)
4528 #define TEMPLATE_PARM_PARAMETER_PACK(NODE) \
4529 (TREE_LANG_FLAG_0 (TEMPLATE_PARM_INDEX_CHECK (NODE)))
4530
4531 /* These macros are for accessing the fields of TEMPLATE_TYPE_PARM,
4532 TEMPLATE_TEMPLATE_PARM and BOUND_TEMPLATE_TEMPLATE_PARM nodes. */
4533 #define TEMPLATE_TYPE_PARM_INDEX(NODE) \
4534 (TYPE_VALUES_RAW (TREE_CHECK3 ((NODE), TEMPLATE_TYPE_PARM, \
4535 TEMPLATE_TEMPLATE_PARM, \
4536 BOUND_TEMPLATE_TEMPLATE_PARM)))
4537 #define TEMPLATE_TYPE_IDX(NODE) \
4538 (TEMPLATE_PARM_IDX (TEMPLATE_TYPE_PARM_INDEX (NODE)))
4539 #define TEMPLATE_TYPE_LEVEL(NODE) \
4540 (TEMPLATE_PARM_LEVEL (TEMPLATE_TYPE_PARM_INDEX (NODE)))
4541 #define TEMPLATE_TYPE_ORIG_LEVEL(NODE) \
4542 (TEMPLATE_PARM_ORIG_LEVEL (TEMPLATE_TYPE_PARM_INDEX (NODE)))
4543 #define TEMPLATE_TYPE_DECL(NODE) \
4544 (TEMPLATE_PARM_DECL (TEMPLATE_TYPE_PARM_INDEX (NODE)))
4545 #define TEMPLATE_TYPE_PARAMETER_PACK(NODE) \
4546 (TEMPLATE_PARM_PARAMETER_PACK (TEMPLATE_TYPE_PARM_INDEX (NODE)))
4547
4548 /* These constants can used as bit flags in the process of tree formatting.
4549
4550 TFF_PLAIN_IDENTIFIER: unqualified part of a name.
4551 TFF_SCOPE: include the class and namespace scope of the name.
4552 TFF_CHASE_TYPEDEF: print the original type-id instead of the typedef-name.
4553 TFF_DECL_SPECIFIERS: print decl-specifiers.
4554 TFF_CLASS_KEY_OR_ENUM: precede a class-type name (resp. enum name) with
4555 a class-key (resp. `enum').
4556 TFF_RETURN_TYPE: include function return type.
4557 TFF_FUNCTION_DEFAULT_ARGUMENTS: include function default parameter values.
4558 TFF_EXCEPTION_SPECIFICATION: show function exception specification.
4559 TFF_TEMPLATE_HEADER: show the template<...> header in a
4560 template-declaration.
4561 TFF_TEMPLATE_NAME: show only template-name.
4562 TFF_EXPR_IN_PARENS: parenthesize expressions.
4563 TFF_NO_FUNCTION_ARGUMENTS: don't show function arguments.
4564 TFF_UNQUALIFIED_NAME: do not print the qualifying scope of the
4565 top-level entity.
4566 TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS: do not omit template arguments
4567 identical to their defaults. */
4568
4569 #define TFF_PLAIN_IDENTIFIER (0)
4570 #define TFF_SCOPE (1)
4571 #define TFF_CHASE_TYPEDEF (1 << 1)
4572 #define TFF_DECL_SPECIFIERS (1 << 2)
4573 #define TFF_CLASS_KEY_OR_ENUM (1 << 3)
4574 #define TFF_RETURN_TYPE (1 << 4)
4575 #define TFF_FUNCTION_DEFAULT_ARGUMENTS (1 << 5)
4576 #define TFF_EXCEPTION_SPECIFICATION (1 << 6)
4577 #define TFF_TEMPLATE_HEADER (1 << 7)
4578 #define TFF_TEMPLATE_NAME (1 << 8)
4579 #define TFF_EXPR_IN_PARENS (1 << 9)
4580 #define TFF_NO_FUNCTION_ARGUMENTS (1 << 10)
4581 #define TFF_UNQUALIFIED_NAME (1 << 11)
4582 #define TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS (1 << 12)
4583
4584 /* Returns the TEMPLATE_DECL associated to a TEMPLATE_TEMPLATE_PARM
4585 node. */
4586 #define TEMPLATE_TEMPLATE_PARM_TEMPLATE_DECL(NODE) \
4587 ((TREE_CODE (NODE) == BOUND_TEMPLATE_TEMPLATE_PARM) \
4588 ? TYPE_TI_TEMPLATE (NODE) \
4589 : TYPE_NAME (NODE))
4590
4591 /* in lex.c */
4592
4593 extern void init_reswords (void);
4594
4595 typedef struct GTY(()) operator_name_info_t {
4596 /* The IDENTIFIER_NODE for the operator. */
4597 tree identifier;
4598 /* The name of the operator. */
4599 const char *name;
4600 /* The mangled name of the operator. */
4601 const char *mangled_name;
4602 /* The arity of the operator. */
4603 int arity;
4604 } operator_name_info_t;
4605
4606 /* A mapping from tree codes to operator name information. */
4607 extern GTY(()) operator_name_info_t operator_name_info
4608 [(int) MAX_TREE_CODES];
4609 /* Similar, but for assignment operators. */
4610 extern GTY(()) operator_name_info_t assignment_operator_name_info
4611 [(int) MAX_TREE_CODES];
4612
4613 /* A type-qualifier, or bitmask therefore, using the TYPE_QUAL
4614 constants. */
4615
4616 typedef int cp_cv_quals;
4617
4618 /* Non-static member functions have an optional virt-specifier-seq.
4619 There is a VIRT_SPEC value for each virt-specifier.
4620 They can be combined by bitwise-or to form the complete set of
4621 virt-specifiers for a member function. */
4622 enum virt_specifier
4623 {
4624 VIRT_SPEC_UNSPECIFIED = 0x0,
4625 VIRT_SPEC_FINAL = 0x1,
4626 VIRT_SPEC_OVERRIDE = 0x2
4627 };
4628
4629 /* A type-qualifier, or bitmask therefore, using the VIRT_SPEC
4630 constants. */
4631
4632 typedef int cp_virt_specifiers;
4633
4634 /* A storage class. */
4635
4636 typedef enum cp_storage_class {
4637 /* sc_none must be zero so that zeroing a cp_decl_specifier_seq
4638 sets the storage_class field to sc_none. */
4639 sc_none = 0,
4640 sc_auto,
4641 sc_register,
4642 sc_static,
4643 sc_extern,
4644 sc_mutable
4645 } cp_storage_class;
4646
4647 /* An individual decl-specifier. */
4648
4649 typedef enum cp_decl_spec {
4650 ds_first,
4651 ds_signed = ds_first,
4652 ds_unsigned,
4653 ds_short,
4654 ds_long,
4655 ds_const,
4656 ds_volatile,
4657 ds_restrict,
4658 ds_inline,
4659 ds_virtual,
4660 ds_explicit,
4661 ds_friend,
4662 ds_typedef,
4663 ds_alias,
4664 ds_constexpr,
4665 ds_complex,
4666 ds_thread,
4667 ds_last
4668 } cp_decl_spec;
4669
4670 /* A decl-specifier-seq. */
4671
4672 typedef struct cp_decl_specifier_seq {
4673 /* The number of times each of the keywords has been seen. */
4674 unsigned specs[(int) ds_last];
4675 /* The location of the primary type. Mainly used for error
4676 reporting. */
4677 location_t type_location;
4678 /* The primary type, if any, given by the decl-specifier-seq.
4679 Modifiers, like "short", "const", and "unsigned" are not
4680 reflected here. This field will be a TYPE, unless a typedef-name
4681 was used, in which case it will be a TYPE_DECL. */
4682 tree type;
4683 /* The attributes, if any, provided with the specifier sequence. */
4684 tree attributes;
4685 /* If non-NULL, a built-in type that the user attempted to redefine
4686 to some other type. */
4687 tree redefined_builtin_type;
4688 /* The storage class specified -- or sc_none if no storage class was
4689 explicitly specified. */
4690 cp_storage_class storage_class;
4691 /* True iff TYPE_SPEC defines a class or enum. */
4692 BOOL_BITFIELD type_definition_p : 1;
4693 /* True iff multiple types were (erroneously) specified for this
4694 decl-specifier-seq. */
4695 BOOL_BITFIELD multiple_types_p : 1;
4696 /* True iff multiple storage classes were (erroneously) specified
4697 for this decl-specifier-seq or a combination of a storage class
4698 with a typedef specifier. */
4699 BOOL_BITFIELD conflicting_specifiers_p : 1;
4700 /* True iff at least one decl-specifier was found. */
4701 BOOL_BITFIELD any_specifiers_p : 1;
4702 /* True iff at least one type-specifier was found. */
4703 BOOL_BITFIELD any_type_specifiers_p : 1;
4704 /* True iff "int" was explicitly provided. */
4705 BOOL_BITFIELD explicit_int_p : 1;
4706 /* True iff "__int128" was explicitly provided. */
4707 BOOL_BITFIELD explicit_int128_p : 1;
4708 /* True iff "char" was explicitly provided. */
4709 BOOL_BITFIELD explicit_char_p : 1;
4710 } cp_decl_specifier_seq;
4711
4712 /* The various kinds of declarators. */
4713
4714 typedef enum cp_declarator_kind {
4715 cdk_id,
4716 cdk_function,
4717 cdk_array,
4718 cdk_pointer,
4719 cdk_reference,
4720 cdk_ptrmem,
4721 cdk_error
4722 } cp_declarator_kind;
4723
4724 /* A declarator. */
4725
4726 typedef struct cp_declarator cp_declarator;
4727
4728 typedef struct cp_parameter_declarator cp_parameter_declarator;
4729
4730 /* A parameter, before it has been semantically analyzed. */
4731 struct cp_parameter_declarator {
4732 /* The next parameter, or NULL_TREE if none. */
4733 cp_parameter_declarator *next;
4734 /* The decl-specifiers-seq for the parameter. */
4735 cp_decl_specifier_seq decl_specifiers;
4736 /* The declarator for the parameter. */
4737 cp_declarator *declarator;
4738 /* The default-argument expression, or NULL_TREE, if none. */
4739 tree default_argument;
4740 /* True iff this is the first parameter in the list and the
4741 parameter sequence ends with an ellipsis. */
4742 bool ellipsis_p;
4743 };
4744
4745 /* A declarator. */
4746 struct cp_declarator {
4747 /* The kind of declarator. */
4748 ENUM_BITFIELD (cp_declarator_kind) kind : 4;
4749 /* Whether we parsed an ellipsis (`...') just before the declarator,
4750 to indicate this is a parameter pack. */
4751 BOOL_BITFIELD parameter_pack_p : 1;
4752 location_t id_loc; /* Currently only set for cdk_id and cdk_function. */
4753 /* Attributes that apply to this declarator. */
4754 tree attributes;
4755 /* For all but cdk_id and cdk_error, the contained declarator. For
4756 cdk_id and cdk_error, guaranteed to be NULL. */
4757 cp_declarator *declarator;
4758 union {
4759 /* For identifiers. */
4760 struct {
4761 /* If non-NULL, the qualifying scope (a NAMESPACE_DECL or
4762 *_TYPE) for this identifier. */
4763 tree qualifying_scope;
4764 /* The unqualified name of the entity -- an IDENTIFIER_NODE,
4765 BIT_NOT_EXPR, or TEMPLATE_ID_EXPR. */
4766 tree unqualified_name;
4767 /* If this is the name of a function, what kind of special
4768 function (if any). */
4769 special_function_kind sfk;
4770 } id;
4771 /* For functions. */
4772 struct {
4773 /* The parameters to the function as a TREE_LIST of decl/default. */
4774 tree parameters;
4775 /* The cv-qualifiers for the function. */
4776 cp_cv_quals qualifiers;
4777 /* The virt-specifiers for the function. */
4778 cp_virt_specifiers virt_specifiers;
4779 /* The exception-specification for the function. */
4780 tree exception_specification;
4781 /* The late-specified return type, if any. */
4782 tree late_return_type;
4783 } function;
4784 /* For arrays. */
4785 struct {
4786 /* The bounds to the array. */
4787 tree bounds;
4788 } array;
4789 /* For cdk_pointer and cdk_ptrmem. */
4790 struct {
4791 /* The cv-qualifiers for the pointer. */
4792 cp_cv_quals qualifiers;
4793 /* For cdk_ptrmem, the class type containing the member. */
4794 tree class_type;
4795 } pointer;
4796 /* For cdk_reference */
4797 struct {
4798 /* The cv-qualifiers for the reference. These qualifiers are
4799 only used to diagnose ill-formed code. */
4800 cp_cv_quals qualifiers;
4801 /* Whether this is an rvalue reference */
4802 bool rvalue_ref;
4803 } reference;
4804 } u;
4805 };
4806
4807 /* A level of template instantiation. */
4808 struct GTY((chain_next ("%h.next"))) tinst_level {
4809 /* The immediately deeper level in the chain. */
4810 struct tinst_level *next;
4811
4812 /* The original node. Can be either a DECL (for a function or static
4813 data member) or a TYPE (for a class), depending on what we were
4814 asked to instantiate. */
4815 tree decl;
4816
4817 /* The location where the template is instantiated. */
4818 location_t locus;
4819
4820 /* errorcount+sorrycount when we pushed this level. */
4821 int errors;
4822
4823 /* True if the location is in a system header. */
4824 bool in_system_header_p;
4825 };
4826
4827 /* Return the type of the `this' parameter of FNTYPE. */
4828
4829 static inline tree
type_of_this_parm(const_tree fntype)4830 type_of_this_parm (const_tree fntype)
4831 {
4832 function_args_iterator iter;
4833 gcc_assert (TREE_CODE (fntype) == METHOD_TYPE);
4834 function_args_iter_init (&iter, fntype);
4835 return function_args_iter_cond (&iter);
4836 }
4837
4838 /* Return the class of the `this' parameter of FNTYPE. */
4839
4840 static inline tree
class_of_this_parm(const_tree fntype)4841 class_of_this_parm (const_tree fntype)
4842 {
4843 return TREE_TYPE (type_of_this_parm (fntype));
4844 }
4845
4846 /* A parameter list indicating for a function with no parameters,
4847 e.g "int f(void)". */
4848 extern cp_parameter_declarator *no_parameters;
4849
4850 /* True if we saw "#pragma GCC java_exceptions". */
4851 extern bool pragma_java_exceptions;
4852
4853 /* in call.c */
4854 extern bool check_dtor_name (tree, tree);
4855
4856 extern tree build_conditional_expr (tree, tree, tree,
4857 tsubst_flags_t);
4858 extern tree build_addr_func (tree);
4859 extern void set_flags_from_callee (tree);
4860 extern tree build_call_a (tree, int, tree*);
4861 extern tree build_call_n (tree, int, ...);
4862 extern bool null_ptr_cst_p (tree);
4863 extern bool null_member_pointer_value_p (tree);
4864 extern bool sufficient_parms_p (const_tree);
4865 extern tree type_decays_to (tree);
4866 extern tree build_user_type_conversion (tree, tree, int);
4867 extern tree build_new_function_call (tree, VEC(tree,gc) **, bool,
4868 tsubst_flags_t);
4869 extern tree build_operator_new_call (tree, VEC(tree,gc) **, tree *,
4870 tree *, tree *);
4871 extern tree build_new_method_call (tree, tree, VEC(tree,gc) **,
4872 tree, int, tree *,
4873 tsubst_flags_t);
4874 extern tree build_special_member_call (tree, tree, VEC(tree,gc) **,
4875 tree, int, tsubst_flags_t);
4876 extern tree build_new_op (enum tree_code, int, tree,
4877 tree, tree, tree *,
4878 tsubst_flags_t);
4879 extern tree build_op_call (tree, VEC(tree,gc) **,
4880 tsubst_flags_t);
4881 extern tree build_op_delete_call (enum tree_code, tree, tree, bool, tree, tree);
4882 extern bool can_convert (tree, tree);
4883 extern bool can_convert_arg (tree, tree, tree, int);
4884 extern bool can_convert_arg_bad (tree, tree, tree, int);
4885 extern bool enforce_access (tree, tree, tree);
4886 extern void push_defarg_context (tree);
4887 extern void pop_defarg_context (void);
4888 extern tree convert_default_arg (tree, tree, tree, int);
4889 extern tree convert_arg_to_ellipsis (tree);
4890 extern tree build_x_va_arg (tree, tree);
4891 extern tree cxx_type_promotes_to (tree);
4892 extern tree type_passed_as (tree);
4893 extern tree convert_for_arg_passing (tree, tree);
4894 extern bool is_properly_derived_from (tree, tree);
4895 extern tree initialize_reference (tree, tree, int,
4896 tsubst_flags_t);
4897 extern tree extend_ref_init_temps (tree, tree, VEC(tree,gc)**);
4898 extern tree make_temporary_var_for_ref_to_temp (tree, tree);
4899 extern bool type_has_extended_temps (tree);
4900 extern tree strip_top_quals (tree);
4901 extern bool reference_related_p (tree, tree);
4902 extern tree perform_implicit_conversion (tree, tree, tsubst_flags_t);
4903 extern tree perform_implicit_conversion_flags (tree, tree, tsubst_flags_t, int);
4904 extern tree build_integral_nontype_arg_conv (tree, tree, tsubst_flags_t);
4905 extern tree perform_direct_initialization_if_possible (tree, tree, bool,
4906 tsubst_flags_t);
4907 extern tree in_charge_arg_for_name (tree);
4908 extern tree build_cxx_call (tree, int, tree *);
4909 extern bool is_std_init_list (tree);
4910 extern bool is_list_ctor (tree);
4911 #ifdef ENABLE_CHECKING
4912 extern void validate_conversion_obstack (void);
4913 #endif /* ENABLE_CHECKING */
4914
4915 /* in class.c */
4916 extern tree build_vfield_ref (tree, tree);
4917 extern tree build_base_path (enum tree_code, tree,
4918 tree, int, tsubst_flags_t);
4919 extern tree convert_to_base (tree, tree, bool, bool,
4920 tsubst_flags_t);
4921 extern tree convert_to_base_statically (tree, tree);
4922 extern tree build_vtbl_ref (tree, tree);
4923 extern tree build_vfn_ref (tree, tree);
4924 extern tree get_vtable_decl (tree, int);
4925 extern void resort_type_method_vec (void *, void *,
4926 gt_pointer_operator, void *);
4927 extern bool add_method (tree, tree, tree);
4928 extern bool currently_open_class (tree);
4929 extern tree currently_open_derived_class (tree);
4930 extern tree current_nonlambda_class_type (void);
4931 extern tree finish_struct (tree, tree);
4932 extern void finish_struct_1 (tree);
4933 extern int resolves_to_fixed_type_p (tree, int *);
4934 extern void init_class_processing (void);
4935 extern int is_empty_class (tree);
4936 extern bool is_really_empty_class (tree);
4937 extern void pushclass (tree);
4938 extern void popclass (void);
4939 extern void push_nested_class (tree);
4940 extern void pop_nested_class (void);
4941 extern int current_lang_depth (void);
4942 extern void push_lang_context (tree);
4943 extern void pop_lang_context (void);
4944 extern tree instantiate_type (tree, tree, tsubst_flags_t);
4945 extern void print_class_statistics (void);
4946 extern void build_self_reference (void);
4947 extern int same_signature_p (const_tree, const_tree);
4948 extern void maybe_add_class_template_decl_list (tree, tree, int);
4949 extern void unreverse_member_declarations (tree);
4950 extern void invalidate_class_lookup_cache (void);
4951 extern void maybe_note_name_used_in_class (tree, tree);
4952 extern void note_name_declared_in_class (tree, tree);
4953 extern tree get_vtbl_decl_for_binfo (tree);
4954 extern void debug_class (tree);
4955 extern void debug_thunks (tree);
4956 extern void set_linkage_according_to_type (tree, tree);
4957 extern void determine_key_method (tree);
4958 extern void check_for_override (tree, tree);
4959 extern void push_class_stack (void);
4960 extern void pop_class_stack (void);
4961 extern bool type_has_user_nondefault_constructor (tree);
4962 extern tree in_class_defaulted_default_constructor (tree);
4963 extern bool user_provided_p (tree);
4964 extern bool type_has_user_provided_constructor (tree);
4965 extern bool type_has_user_provided_default_constructor (tree);
4966 extern tree default_init_uninitialized_part (tree);
4967 extern bool trivial_default_constructor_is_constexpr (tree);
4968 extern bool type_has_constexpr_default_constructor (tree);
4969 extern bool type_has_virtual_destructor (tree);
4970 extern bool type_has_move_constructor (tree);
4971 extern bool type_has_move_assign (tree);
4972 extern bool type_has_user_declared_move_constructor (tree);
4973 extern bool type_has_user_declared_move_assign(tree);
4974 extern bool type_build_ctor_call (tree);
4975 extern void explain_non_literal_class (tree);
4976 extern void defaulted_late_check (tree);
4977 extern bool defaultable_fn_check (tree);
4978 extern void fixup_type_variants (tree);
4979 extern void fixup_attribute_variants (tree);
4980 extern tree* decl_cloned_function_p (const_tree, bool);
4981 extern void clone_function_decl (tree, int);
4982 extern void adjust_clone_args (tree);
4983 extern void insert_late_enum_def_into_classtype_sorted_fields (tree, tree);
4984
4985 /* in cvt.c */
4986 extern tree convert_to_reference (tree, tree, int, int, tree);
4987 extern tree convert_from_reference (tree);
4988 extern tree force_rvalue (tree, tsubst_flags_t);
4989 extern tree ocp_convert (tree, tree, int, int);
4990 extern tree cp_convert (tree, tree);
4991 extern tree cp_convert_and_check (tree, tree);
4992 extern tree cp_fold_convert (tree, tree);
4993 extern tree convert_to_void (tree, impl_conv_void,
4994 tsubst_flags_t);
4995 extern tree convert_force (tree, tree, int);
4996 extern tree build_expr_type_conversion (int, tree, bool);
4997 extern tree type_promotes_to (tree);
4998 extern tree perform_qualification_conversions (tree, tree);
4999
5000 /* in name-lookup.c */
5001 extern tree pushdecl (tree);
5002 extern tree pushdecl_maybe_friend (tree, bool);
5003 extern void maybe_push_cleanup_level (tree);
5004 extern tree pushtag (tree, tree, tag_scope);
5005 extern tree make_anon_name (void);
5006 extern tree pushdecl_top_level_maybe_friend (tree, bool);
5007 extern tree pushdecl_top_level_and_finish (tree, tree);
5008 extern tree check_for_out_of_scope_variable (tree);
5009 extern void print_other_binding_stack (cp_binding_level *);
5010 extern tree maybe_push_decl (tree);
5011 extern tree current_decl_namespace (void);
5012
5013 /* decl.c */
5014 extern tree poplevel (int, int, int);
5015 extern void cxx_init_decl_processing (void);
5016 enum cp_tree_node_structure_enum cp_tree_node_structure
5017 (union lang_tree_node *);
5018 extern void finish_scope (void);
5019 extern void push_switch (tree);
5020 extern void pop_switch (void);
5021 extern tree make_lambda_name (void);
5022 extern int decls_match (tree, tree);
5023 extern tree duplicate_decls (tree, tree, bool);
5024 extern tree declare_local_label (tree);
5025 extern tree define_label (location_t, tree);
5026 extern void check_goto (tree);
5027 extern bool check_omp_return (void);
5028 extern tree make_typename_type (tree, tree, enum tag_types, tsubst_flags_t);
5029 extern tree make_unbound_class_template (tree, tree, tree, tsubst_flags_t);
5030 extern tree build_library_fn_ptr (const char *, tree);
5031 extern tree build_cp_library_fn_ptr (const char *, tree);
5032 extern tree push_library_fn (tree, tree, tree);
5033 extern tree push_void_library_fn (tree, tree);
5034 extern tree push_throw_library_fn (tree, tree);
5035 extern tree check_tag_decl (cp_decl_specifier_seq *);
5036 extern tree shadow_tag (cp_decl_specifier_seq *);
5037 extern tree groktypename (cp_decl_specifier_seq *, const cp_declarator *, bool);
5038 extern tree start_decl (const cp_declarator *, cp_decl_specifier_seq *, int, tree, tree, tree *);
5039 extern void start_decl_1 (tree, bool);
5040 extern bool check_array_initializer (tree, tree, tree);
5041 extern void cp_finish_decl (tree, tree, bool, tree, int);
5042 extern int cp_complete_array_type (tree *, tree, bool);
5043 extern int cp_complete_array_type_or_error (tree *, tree, bool, tsubst_flags_t);
5044 extern tree build_ptrmemfunc_type (tree);
5045 extern tree build_ptrmem_type (tree, tree);
5046 /* the grokdeclarator prototype is in decl.h */
5047 extern tree build_this_parm (tree, cp_cv_quals);
5048 extern int copy_fn_p (const_tree);
5049 extern bool move_fn_p (const_tree);
5050 extern bool move_signature_fn_p (const_tree);
5051 extern tree get_scope_of_declarator (const cp_declarator *);
5052 extern void grok_special_member_properties (tree);
5053 extern int grok_ctor_properties (const_tree, const_tree);
5054 extern bool grok_op_properties (tree, bool);
5055 extern tree xref_tag (enum tag_types, tree, tag_scope, bool);
5056 extern tree xref_tag_from_type (tree, tree, tag_scope);
5057 extern bool xref_basetypes (tree, tree);
5058 extern tree start_enum (tree, tree, tree, bool, bool *);
5059 extern void finish_enum_value_list (tree);
5060 extern void finish_enum (tree);
5061 extern void build_enumerator (tree, tree, tree, location_t);
5062 extern tree lookup_enumerator (tree, tree);
5063 extern void start_preparsed_function (tree, tree, int);
5064 extern int start_function (cp_decl_specifier_seq *, const cp_declarator *, tree);
5065 extern tree begin_function_body (void);
5066 extern void finish_function_body (tree);
5067 extern tree outer_curly_brace_block (tree);
5068 extern tree finish_function (int);
5069 extern tree grokmethod (cp_decl_specifier_seq *, const cp_declarator *, tree);
5070 extern void maybe_register_incomplete_var (tree);
5071 extern void maybe_commonize_var (tree);
5072 extern void complete_vars (tree);
5073 extern void finish_stmt (void);
5074 extern tree static_fn_type (tree);
5075 extern void revert_static_member_fn (tree);
5076 extern void fixup_anonymous_aggr (tree);
5077 extern tree compute_array_index_type (tree, tree, tsubst_flags_t);
5078 extern tree check_default_argument (tree, tree);
5079 typedef int (*walk_namespaces_fn) (tree, void *);
5080 extern int walk_namespaces (walk_namespaces_fn,
5081 void *);
5082 extern int wrapup_globals_for_namespace (tree, void *);
5083 extern tree create_implicit_typedef (tree, tree);
5084 extern int local_variable_p (const_tree);
5085 extern tree register_dtor_fn (tree);
5086 extern tmpl_spec_kind current_tmpl_spec_kind (int);
5087 extern tree cp_fname_init (const char *, tree *);
5088 extern tree cxx_builtin_function (tree decl);
5089 extern tree cxx_builtin_function_ext_scope (tree decl);
5090 extern tree check_elaborated_type_specifier (enum tag_types, tree, bool);
5091 extern void warn_extern_redeclared_static (tree, tree);
5092 extern tree cxx_comdat_group (tree);
5093 extern bool cp_missing_noreturn_ok_p (tree);
5094 extern void initialize_artificial_var (tree, VEC(constructor_elt,gc) *);
5095 extern tree check_var_type (tree, tree);
5096 extern tree reshape_init (tree, tree, tsubst_flags_t);
5097 extern tree next_initializable_field (tree);
5098
5099 extern bool defer_mark_used_calls;
5100 extern GTY(()) VEC(tree, gc) *deferred_mark_used_calls;
5101 extern tree finish_case_label (location_t, tree, tree);
5102 extern tree cxx_maybe_build_cleanup (tree, tsubst_flags_t);
5103
5104 /* in decl2.c */
5105 extern bool check_java_method (tree);
5106 extern tree build_memfn_type (tree, tree, cp_cv_quals);
5107 extern tree change_return_type (tree, tree);
5108 extern void maybe_retrofit_in_chrg (tree);
5109 extern void maybe_make_one_only (tree);
5110 extern bool vague_linkage_p (tree);
5111 extern void grokclassfn (tree, tree,
5112 enum overload_flags);
5113 extern tree grok_array_decl (tree, tree);
5114 extern tree delete_sanity (tree, tree, bool, int, tsubst_flags_t);
5115 extern tree check_classfn (tree, tree, tree);
5116 extern void check_member_template (tree);
5117 extern tree grokfield (const cp_declarator *, cp_decl_specifier_seq *,
5118 tree, bool, tree, tree);
5119 extern tree grokbitfield (const cp_declarator *, cp_decl_specifier_seq *,
5120 tree, tree);
5121 extern tree cp_reconstruct_complex_type (tree, tree);
5122 extern void cplus_decl_attributes (tree *, tree, int);
5123 extern void finish_anon_union (tree);
5124 extern void cp_write_global_declarations (void);
5125 extern tree coerce_new_type (tree);
5126 extern tree coerce_delete_type (tree);
5127 extern void comdat_linkage (tree);
5128 extern void determine_visibility (tree);
5129 extern void constrain_class_visibility (tree);
5130 extern void import_export_decl (tree);
5131 extern tree build_cleanup (tree);
5132 extern tree build_offset_ref_call_from_tree (tree, VEC(tree,gc) **);
5133 extern bool decl_constant_var_p (tree);
5134 extern bool decl_maybe_constant_var_p (tree);
5135 extern void check_default_args (tree);
5136 extern bool mark_used (tree);
5137 extern void finish_static_data_member_decl (tree, tree, bool, tree, int);
5138 extern tree cp_build_parm_decl (tree, tree);
5139 extern tree get_guard (tree);
5140 extern tree get_guard_cond (tree);
5141 extern tree set_guard (tree);
5142 extern tree cxx_callgraph_analyze_expr (tree *, int *);
5143 extern void mark_needed (tree);
5144 extern bool decl_needed_p (tree);
5145 extern void note_vague_linkage_fn (tree);
5146 extern tree build_artificial_parm (tree, tree);
5147 extern bool possibly_inlined_p (tree);
5148 extern int parm_index (tree);
5149
5150 /* in error.c */
5151 extern void init_error (void);
5152 extern const char *type_as_string (tree, int);
5153 extern const char *type_as_string_translate (tree, int);
5154 extern const char *decl_as_string (tree, int);
5155 extern const char *decl_as_string_translate (tree, int);
5156 extern const char *expr_as_string (tree, int);
5157 extern const char *lang_decl_name (tree, int, bool);
5158 extern const char *language_to_string (enum languages);
5159 extern const char *class_key_or_enum_as_string (tree);
5160 extern void print_instantiation_context (void);
5161 extern void maybe_warn_variadic_templates (void);
5162 extern void maybe_warn_cpp0x (cpp0x_warn_str str);
5163 extern bool pedwarn_cxx98 (location_t, int, const char *, ...) ATTRIBUTE_GCC_DIAG(3,4);
5164 extern location_t location_of (tree);
5165 extern void qualified_name_lookup_error (tree, tree, tree,
5166 location_t);
5167
5168 /* in except.c */
5169 extern void init_exception_processing (void);
5170 extern tree expand_start_catch_block (tree);
5171 extern void expand_end_catch_block (void);
5172 extern tree build_exc_ptr (void);
5173 extern tree build_throw (tree);
5174 extern int nothrow_libfn_p (const_tree);
5175 extern void check_handlers (tree);
5176 extern tree finish_noexcept_expr (tree, tsubst_flags_t);
5177 extern bool expr_noexcept_p (tree, tsubst_flags_t);
5178 extern void perform_deferred_noexcept_checks (void);
5179 extern bool nothrow_spec_p (const_tree);
5180 extern bool type_noexcept_p (const_tree);
5181 extern bool type_throw_all_p (const_tree);
5182 extern tree build_noexcept_spec (tree, int);
5183 extern void choose_personality_routine (enum languages);
5184 extern tree build_must_not_throw_expr (tree,tree);
5185 extern tree eh_type_info (tree);
5186 extern tree begin_eh_spec_block (void);
5187 extern void finish_eh_spec_block (tree, tree);
5188 extern tree build_eh_type_type (tree);
5189 extern tree cp_protect_cleanup_actions (void);
5190
5191 /* in expr.c */
5192 extern tree cplus_expand_constant (tree);
5193 extern tree mark_rvalue_use (tree);
5194 extern tree mark_lvalue_use (tree);
5195 extern tree mark_type_use (tree);
5196 extern void mark_exp_read (tree);
5197
5198 /* friend.c */
5199 extern int is_friend (tree, tree);
5200 extern void make_friend_class (tree, tree, bool);
5201 extern void add_friend (tree, tree, bool);
5202 extern tree do_friend (tree, tree, tree, tree, enum overload_flags, bool);
5203
5204 /* in init.c */
5205 extern tree expand_member_init (tree);
5206 extern void emit_mem_initializers (tree);
5207 extern tree build_aggr_init (tree, tree, int,
5208 tsubst_flags_t);
5209 extern int is_class_type (tree, int);
5210 extern tree get_type_value (tree);
5211 extern tree build_zero_init (tree, tree, bool);
5212 extern tree build_value_init (tree, tsubst_flags_t);
5213 extern tree build_value_init_noctor (tree, tsubst_flags_t);
5214 extern tree build_offset_ref (tree, tree, bool);
5215 extern tree build_new (VEC(tree,gc) **, tree, tree,
5216 VEC(tree,gc) **, int,
5217 tsubst_flags_t);
5218 extern tree get_temp_regvar (tree, tree);
5219 extern tree build_vec_init (tree, tree, tree, bool, int,
5220 tsubst_flags_t);
5221 extern tree build_delete (tree, tree,
5222 special_function_kind,
5223 int, int, tsubst_flags_t);
5224 extern void push_base_cleanups (void);
5225 extern tree build_vec_delete (tree, tree,
5226 special_function_kind, int,
5227 tsubst_flags_t);
5228 extern tree create_temporary_var (tree);
5229 extern void initialize_vtbl_ptrs (tree);
5230 extern tree build_java_class_ref (tree);
5231 extern tree integral_constant_value (tree);
5232 extern tree decl_constant_value_safe (tree);
5233 extern int diagnose_uninitialized_cst_or_ref_member (tree, bool, bool);
5234
5235 /* in lex.c */
5236 extern void cxx_dup_lang_specific_decl (tree);
5237 extern void yyungetc (int, int);
5238
5239 extern tree unqualified_name_lookup_error (tree);
5240 extern tree unqualified_fn_lookup_error (tree);
5241 extern tree build_lang_decl (enum tree_code, tree, tree);
5242 extern tree build_lang_decl_loc (location_t, enum tree_code, tree, tree);
5243 extern void retrofit_lang_decl (tree);
5244 extern tree copy_decl (tree);
5245 extern tree copy_type (tree);
5246 extern tree cxx_make_type (enum tree_code);
5247 extern tree make_class_type (enum tree_code);
5248 extern bool cxx_init (void);
5249 extern void cxx_finish (void);
5250 extern bool in_main_input_context (void);
5251
5252 /* in method.c */
5253 extern void init_method (void);
5254 extern tree make_thunk (tree, bool, tree, tree);
5255 extern void finish_thunk (tree);
5256 extern void use_thunk (tree, bool);
5257 extern bool trivial_fn_p (tree);
5258 extern bool maybe_explain_implicit_delete (tree);
5259 extern void explain_implicit_non_constexpr (tree);
5260 extern void synthesize_method (tree);
5261 extern tree lazily_declare_fn (special_function_kind,
5262 tree);
5263 extern tree skip_artificial_parms_for (const_tree, tree);
5264 extern int num_artificial_parms_for (const_tree);
5265 extern tree make_alias_for (tree, tree);
5266 extern tree get_copy_ctor (tree, tsubst_flags_t);
5267 extern tree get_copy_assign (tree);
5268 extern tree get_default_ctor (tree);
5269 extern tree get_dtor (tree, tsubst_flags_t);
5270 extern tree locate_ctor (tree);
5271
5272 /* In optimize.c */
5273 extern bool maybe_clone_body (tree);
5274
5275 /* in pt.c */
5276 extern bool check_template_shadow (tree);
5277 extern tree get_innermost_template_args (tree, int);
5278 extern void maybe_begin_member_template_processing (tree);
5279 extern void maybe_end_member_template_processing (void);
5280 extern tree finish_member_template_decl (tree);
5281 extern void begin_template_parm_list (void);
5282 extern bool begin_specialization (void);
5283 extern void reset_specialization (void);
5284 extern void end_specialization (void);
5285 extern void begin_explicit_instantiation (void);
5286 extern void end_explicit_instantiation (void);
5287 extern tree check_explicit_specialization (tree, tree, int, int);
5288 extern tree make_auto (void);
5289 extern tree do_auto_deduction (tree, tree, tree);
5290 extern tree type_uses_auto (tree);
5291 extern void append_type_to_template_for_access_check (tree, tree, tree,
5292 location_t);
5293 extern tree splice_late_return_type (tree, tree);
5294 extern bool is_auto (const_tree);
5295 extern tree process_template_parm (tree, location_t, tree,
5296 bool, bool);
5297 extern tree end_template_parm_list (tree);
5298 extern void end_template_decl (void);
5299 extern tree maybe_update_decl_type (tree, tree);
5300 extern bool check_default_tmpl_args (tree, tree, int, int, int);
5301 extern tree push_template_decl (tree);
5302 extern tree push_template_decl_real (tree, bool);
5303 extern bool redeclare_class_template (tree, tree);
5304 extern tree lookup_template_class (tree, tree, tree, tree,
5305 int, tsubst_flags_t);
5306 extern tree lookup_template_function (tree, tree);
5307 extern int uses_template_parms (tree);
5308 extern int uses_template_parms_level (tree, int);
5309 extern tree instantiate_class_template (tree);
5310 extern tree instantiate_template (tree, tree, tsubst_flags_t);
5311 extern int fn_type_unification (tree, tree, tree,
5312 const tree *, unsigned int,
5313 tree, unification_kind_t, int,
5314 bool);
5315 extern void mark_decl_instantiated (tree, int);
5316 extern int more_specialized_fn (tree, tree, int);
5317 extern void do_decl_instantiation (tree, tree);
5318 extern void do_type_instantiation (tree, tree, tsubst_flags_t);
5319 extern bool always_instantiate_p (tree);
5320 extern void maybe_instantiate_noexcept (tree);
5321 extern tree instantiate_decl (tree, int, bool);
5322 extern int comp_template_parms (const_tree, const_tree);
5323 extern bool uses_parameter_packs (tree);
5324 extern bool template_parameter_pack_p (const_tree);
5325 extern bool function_parameter_pack_p (const_tree);
5326 extern bool function_parameter_expanded_from_pack_p (tree, tree);
5327 extern tree make_pack_expansion (tree);
5328 extern bool check_for_bare_parameter_packs (tree);
5329 extern tree build_template_info (tree, tree);
5330 extern tree get_template_info (const_tree);
5331 extern VEC(qualified_typedef_usage_t,gc)* get_types_needing_access_check (tree);
5332 extern int template_class_depth (tree);
5333 extern int is_specialization_of (tree, tree);
5334 extern bool is_specialization_of_friend (tree, tree);
5335 extern tree get_pattern_parm (tree, tree);
5336 extern int comp_template_args (tree, tree);
5337 extern tree maybe_process_partial_specialization (tree);
5338 extern tree most_specialized_instantiation (tree);
5339 extern void print_candidates (tree);
5340 extern void instantiate_pending_templates (int);
5341 extern tree tsubst_default_argument (tree, tree, tree);
5342 extern tree tsubst (tree, tree, tsubst_flags_t, tree);
5343 extern tree tsubst_copy_and_build (tree, tree, tsubst_flags_t,
5344 tree, bool, bool);
5345 extern tree most_general_template (tree);
5346 extern tree get_mostly_instantiated_function_type (tree);
5347 extern int problematic_instantiation_changed (void);
5348 extern void record_last_problematic_instantiation (void);
5349 extern struct tinst_level *current_instantiation(void);
5350 extern tree maybe_get_template_decl_from_type_decl (tree);
5351 extern int processing_template_parmlist;
5352 extern bool dependent_type_p (tree);
5353 extern bool dependent_scope_p (tree);
5354 extern bool any_dependent_template_arguments_p (const_tree);
5355 extern bool dependent_template_p (tree);
5356 extern bool dependent_template_id_p (tree, tree);
5357 extern bool type_dependent_expression_p (tree);
5358 extern bool any_type_dependent_arguments_p (const VEC(tree,gc) *);
5359 extern bool any_type_dependent_elements_p (const_tree);
5360 extern bool type_dependent_expression_p_push (tree);
5361 extern bool value_dependent_expression_p (tree);
5362 extern bool any_value_dependent_elements_p (const_tree);
5363 extern bool dependent_omp_for_p (tree, tree, tree, tree);
5364 extern tree resolve_typename_type (tree, bool);
5365 extern tree template_for_substitution (tree);
5366 extern tree build_non_dependent_expr (tree);
5367 extern void make_args_non_dependent (VEC(tree,gc) *);
5368 extern bool reregister_specialization (tree, tree, tree);
5369 extern tree fold_non_dependent_expr (tree);
5370 extern bool alias_type_or_template_p (tree);
5371 extern bool alias_template_specialization_p (tree);
5372 extern bool explicit_class_specialization_p (tree);
5373 extern int push_tinst_level (tree);
5374 extern void pop_tinst_level (void);
5375 extern struct tinst_level *outermost_tinst_level(void);
5376 extern bool parameter_of_template_p (tree, tree);
5377 extern void init_template_processing (void);
5378 extern void print_template_statistics (void);
5379 bool template_template_parameter_p (const_tree);
5380 extern bool primary_template_instantiation_p (const_tree);
5381 extern tree get_primary_template_innermost_parameters (const_tree);
5382 extern tree get_template_parms_at_level (tree, int);
5383 extern tree get_template_innermost_arguments (const_tree);
5384 extern tree get_template_argument_pack_elems (const_tree);
5385 extern tree get_function_template_decl (const_tree);
5386 extern tree resolve_nondeduced_context (tree);
5387 extern hashval_t iterative_hash_template_arg (tree arg, hashval_t val);
5388
5389 /* in repo.c */
5390 extern void init_repo (void);
5391 extern int repo_emit_p (tree);
5392 extern bool repo_export_class_p (const_tree);
5393 extern void finish_repo (void);
5394
5395 /* in rtti.c */
5396 /* A vector of all tinfo decls that haven't been emitted yet. */
5397 extern GTY(()) VEC(tree,gc) *unemitted_tinfo_decls;
5398
5399 extern void init_rtti_processing (void);
5400 extern tree build_typeid (tree);
5401 extern tree get_tinfo_decl (tree);
5402 extern tree get_typeid (tree);
5403 extern tree build_headof (tree);
5404 extern tree build_dynamic_cast (tree, tree, tsubst_flags_t);
5405 extern void emit_support_tinfos (void);
5406 extern bool emit_tinfo_decl (tree);
5407
5408 /* in search.c */
5409 extern bool accessible_base_p (tree, tree, bool);
5410 extern tree lookup_base (tree, tree, base_access,
5411 base_kind *);
5412 extern tree dcast_base_hint (tree, tree);
5413 extern int accessible_p (tree, tree, bool);
5414 extern tree lookup_field_1 (tree, tree, bool);
5415 extern tree lookup_field (tree, tree, int, bool);
5416 extern int lookup_fnfields_1 (tree, tree);
5417 extern tree lookup_fnfields_slot (tree, tree);
5418 extern tree lookup_fnfields_slot_nolazy (tree, tree);
5419 extern int class_method_index_for_fn (tree, tree);
5420 extern tree lookup_fnfields (tree, tree, int);
5421 extern tree lookup_member (tree, tree, int, bool,
5422 tsubst_flags_t);
5423 extern int look_for_overrides (tree, tree);
5424 extern void get_pure_virtuals (tree);
5425 extern void maybe_suppress_debug_info (tree);
5426 extern void note_debug_info_needed (tree);
5427 extern void print_search_statistics (void);
5428 extern void reinit_search_statistics (void);
5429 extern tree current_scope (void);
5430 extern int at_function_scope_p (void);
5431 extern bool at_class_scope_p (void);
5432 extern bool at_namespace_scope_p (void);
5433 extern tree context_for_name_lookup (tree);
5434 extern tree lookup_conversions (tree);
5435 extern tree binfo_from_vbase (tree);
5436 extern tree binfo_for_vbase (tree, tree);
5437 extern tree look_for_overrides_here (tree, tree);
5438 #define dfs_skip_bases ((tree)1)
5439 extern tree dfs_walk_all (tree, tree (*) (tree, void *),
5440 tree (*) (tree, void *), void *);
5441 extern tree dfs_walk_once (tree, tree (*) (tree, void *),
5442 tree (*) (tree, void *), void *);
5443 extern tree binfo_via_virtual (tree, tree);
5444 extern tree build_baselink (tree, tree, tree, tree);
5445 extern tree adjust_result_of_qualified_name_lookup
5446 (tree, tree, tree);
5447 extern tree copied_binfo (tree, tree);
5448 extern tree original_binfo (tree, tree);
5449 extern int shared_member_p (tree);
5450
5451
5452 /* The representation of a deferred access check. */
5453
5454 typedef struct GTY(()) deferred_access_check {
5455 /* The base class in which the declaration is referenced. */
5456 tree binfo;
5457 /* The declaration whose access must be checked. */
5458 tree decl;
5459 /* The declaration that should be used in the error message. */
5460 tree diag_decl;
5461 } deferred_access_check;
5462 DEF_VEC_O(deferred_access_check);
5463 DEF_VEC_ALLOC_O(deferred_access_check,gc);
5464
5465 /* in semantics.c */
5466 extern void push_deferring_access_checks (deferring_kind);
5467 extern void resume_deferring_access_checks (void);
5468 extern void stop_deferring_access_checks (void);
5469 extern void pop_deferring_access_checks (void);
5470 extern VEC (deferred_access_check,gc)* get_deferred_access_checks (void);
5471 extern void pop_to_parent_deferring_access_checks (void);
5472 extern void perform_access_checks (VEC (deferred_access_check,gc)*);
5473 extern void perform_deferred_access_checks (void);
5474 extern void perform_or_defer_access_check (tree, tree, tree);
5475 extern bool speculative_access_check (tree, tree, tree, bool);
5476 extern int stmts_are_full_exprs_p (void);
5477 extern void init_cp_semantics (void);
5478 extern tree do_poplevel (tree);
5479 extern void add_decl_expr (tree);
5480 extern tree maybe_cleanup_point_expr_void (tree);
5481 extern tree finish_expr_stmt (tree);
5482 extern tree begin_if_stmt (void);
5483 extern void finish_if_stmt_cond (tree, tree);
5484 extern tree finish_then_clause (tree);
5485 extern void begin_else_clause (tree);
5486 extern void finish_else_clause (tree);
5487 extern void finish_if_stmt (tree);
5488 extern tree begin_while_stmt (void);
5489 extern void finish_while_stmt_cond (tree, tree);
5490 extern void finish_while_stmt (tree);
5491 extern tree begin_do_stmt (void);
5492 extern void finish_do_body (tree);
5493 extern void finish_do_stmt (tree, tree);
5494 extern tree finish_return_stmt (tree);
5495 extern tree begin_for_scope (tree *);
5496 extern tree begin_for_stmt (tree, tree);
5497 extern void finish_for_init_stmt (tree);
5498 extern void finish_for_cond (tree, tree);
5499 extern void finish_for_expr (tree, tree);
5500 extern void finish_for_stmt (tree);
5501 extern tree begin_range_for_stmt (tree, tree);
5502 extern void finish_range_for_decl (tree, tree, tree);
5503 extern void finish_range_for_stmt (tree);
5504 extern tree finish_break_stmt (void);
5505 extern tree finish_continue_stmt (void);
5506 extern tree begin_switch_stmt (void);
5507 extern void finish_switch_cond (tree, tree);
5508 extern void finish_switch_stmt (tree);
5509 extern tree finish_goto_stmt (tree);
5510 extern tree begin_try_block (void);
5511 extern void finish_try_block (tree);
5512 extern void finish_handler_sequence (tree);
5513 extern tree begin_function_try_block (tree *);
5514 extern void finish_function_try_block (tree);
5515 extern void finish_function_handler_sequence (tree, tree);
5516 extern void finish_cleanup_try_block (tree);
5517 extern tree begin_handler (void);
5518 extern void finish_handler_parms (tree, tree);
5519 extern void finish_handler (tree);
5520 extern void finish_cleanup (tree, tree);
5521 extern bool literal_type_p (tree);
5522 extern tree register_constexpr_fundef (tree, tree);
5523 extern bool check_constexpr_ctor_body (tree, tree);
5524 extern tree ensure_literal_type_for_constexpr_object (tree);
5525 extern bool potential_constant_expression (tree);
5526 extern bool potential_rvalue_constant_expression (tree);
5527 extern bool require_potential_constant_expression (tree);
5528 extern bool require_potential_rvalue_constant_expression (tree);
5529 extern tree cxx_constant_value (tree);
5530 extern tree maybe_constant_value (tree);
5531 extern tree maybe_constant_init (tree);
5532 extern bool is_sub_constant_expr (tree);
5533 extern bool reduced_constant_expression_p (tree);
5534 extern void explain_invalid_constexpr_fn (tree);
5535 extern VEC(tree,heap)* cx_error_context (void);
5536
5537 enum {
5538 BCS_NO_SCOPE = 1,
5539 BCS_TRY_BLOCK = 2,
5540 BCS_FN_BODY = 4
5541 };
5542 extern tree begin_compound_stmt (unsigned int);
5543
5544 extern void finish_compound_stmt (tree);
5545 extern tree finish_asm_stmt (int, tree, tree, tree, tree,
5546 tree);
5547 extern tree finish_label_stmt (tree);
5548 extern void finish_label_decl (tree);
5549 extern tree finish_parenthesized_expr (tree);
5550 extern tree finish_non_static_data_member (tree, tree, tree);
5551 extern tree begin_stmt_expr (void);
5552 extern tree finish_stmt_expr_expr (tree, tree);
5553 extern tree finish_stmt_expr (tree, bool);
5554 extern tree stmt_expr_value_expr (tree);
5555 bool empty_expr_stmt_p (tree);
5556 extern tree perform_koenig_lookup (tree, VEC(tree,gc) *, bool,
5557 tsubst_flags_t);
5558 extern tree finish_call_expr (tree, VEC(tree,gc) **, bool,
5559 bool, tsubst_flags_t);
5560 extern tree finish_increment_expr (tree, enum tree_code);
5561 extern tree finish_this_expr (void);
5562 extern tree finish_pseudo_destructor_expr (tree, tree, tree);
5563 extern tree finish_unary_op_expr (enum tree_code, tree);
5564 extern tree finish_compound_literal (tree, tree, tsubst_flags_t);
5565 extern tree finish_fname (tree);
5566 extern void finish_translation_unit (void);
5567 extern tree finish_template_type_parm (tree, tree);
5568 extern tree finish_template_template_parm (tree, tree);
5569 extern tree begin_class_definition (tree);
5570 extern void finish_template_decl (tree);
5571 extern tree finish_template_type (tree, tree, int);
5572 extern tree finish_base_specifier (tree, tree, bool);
5573 extern void finish_member_declaration (tree);
5574 extern tree finish_id_expression (tree, tree, tree,
5575 cp_id_kind *,
5576 bool, bool, bool *,
5577 bool, bool, bool, bool,
5578 const char **,
5579 location_t);
5580 extern tree finish_typeof (tree);
5581 extern tree finish_underlying_type (tree);
5582 extern tree calculate_bases (tree);
5583 extern tree finish_bases (tree, bool);
5584 extern tree calculate_direct_bases (tree);
5585 extern tree finish_offsetof (tree);
5586 extern void finish_decl_cleanup (tree, tree);
5587 extern void finish_eh_cleanup (tree);
5588 extern void emit_associated_thunks (tree);
5589 extern void finish_mem_initializers (tree);
5590 extern tree check_template_template_default_arg (tree);
5591 extern bool expand_or_defer_fn_1 (tree);
5592 extern void expand_or_defer_fn (tree);
5593 extern void add_typedef_to_current_template_for_access_check (tree, tree,
5594 location_t);
5595 extern void check_accessibility_of_qualified_id (tree, tree, tree);
5596 extern tree finish_qualified_id_expr (tree, tree, bool, bool,
5597 bool, bool);
5598 extern void simplify_aggr_init_expr (tree *);
5599 extern void finalize_nrv (tree *, tree, tree);
5600 extern void note_decl_for_pch (tree);
5601 extern tree finish_omp_clauses (tree);
5602 extern void finish_omp_threadprivate (tree);
5603 extern tree begin_omp_structured_block (void);
5604 extern tree finish_omp_structured_block (tree);
5605 extern tree begin_omp_parallel (void);
5606 extern tree finish_omp_parallel (tree, tree);
5607 extern tree begin_omp_task (void);
5608 extern tree finish_omp_task (tree, tree);
5609 extern tree finish_omp_for (location_t, tree, tree,
5610 tree, tree, tree, tree, tree);
5611 extern void finish_omp_atomic (enum tree_code, enum tree_code,
5612 tree, tree, tree, tree, tree);
5613 extern void finish_omp_barrier (void);
5614 extern void finish_omp_flush (void);
5615 extern void finish_omp_taskwait (void);
5616 extern tree begin_transaction_stmt (location_t, tree *, int);
5617 extern void finish_transaction_stmt (tree, tree, int, tree);
5618 extern tree build_transaction_expr (location_t, tree, int, tree);
5619 extern void finish_omp_taskyield (void);
5620 extern bool cxx_omp_create_clause_info (tree, tree, bool, bool, bool);
5621 extern tree baselink_for_fns (tree);
5622 extern void finish_static_assert (tree, tree, location_t,
5623 bool);
5624 extern tree finish_decltype_type (tree, bool, tsubst_flags_t);
5625 extern tree finish_trait_expr (enum cp_trait_kind, tree, tree);
5626 extern tree build_lambda_expr (void);
5627 extern tree build_lambda_object (tree);
5628 extern tree begin_lambda_type (tree);
5629 extern tree lambda_capture_field_type (tree);
5630 extern tree lambda_return_type (tree);
5631 extern tree lambda_proxy_type (tree);
5632 extern tree lambda_function (tree);
5633 extern void apply_lambda_return_type (tree, tree);
5634 extern tree add_capture (tree, tree, tree, bool, bool);
5635 extern tree add_default_capture (tree, tree, tree);
5636 extern tree build_capture_proxy (tree);
5637 extern void insert_capture_proxy (tree);
5638 extern void insert_pending_capture_proxies (void);
5639 extern bool is_capture_proxy (tree);
5640 extern bool is_normal_capture_proxy (tree);
5641 extern void register_capture_members (tree);
5642 extern tree lambda_expr_this_capture (tree);
5643 extern tree nonlambda_method_basetype (void);
5644 extern void maybe_add_lambda_conv_op (tree);
5645 extern bool is_lambda_ignored_entity (tree);
5646
5647 /* in tree.c */
5648 extern int cp_tree_operand_length (const_tree);
5649 void cp_free_lang_data (tree t);
5650 extern tree force_target_expr (tree, tree, tsubst_flags_t);
5651 extern tree build_target_expr_with_type (tree, tree, tsubst_flags_t);
5652 extern void lang_check_failed (const char *, int,
5653 const char *) ATTRIBUTE_NORETURN;
5654 extern tree stabilize_expr (tree, tree *);
5655 extern void stabilize_call (tree, tree *);
5656 extern void stabilize_aggr_init (tree, tree *);
5657 extern bool stabilize_init (tree, tree *);
5658 extern tree add_stmt_to_compound (tree, tree);
5659 extern void init_tree (void);
5660 extern bool pod_type_p (const_tree);
5661 extern bool layout_pod_type_p (const_tree);
5662 extern bool std_layout_type_p (const_tree);
5663 extern bool trivial_type_p (const_tree);
5664 extern bool trivially_copyable_p (const_tree);
5665 extern bool type_has_nontrivial_default_init (const_tree);
5666 extern bool type_has_nontrivial_copy_init (const_tree);
5667 extern bool class_tmpl_impl_spec_p (const_tree);
5668 extern int zero_init_p (const_tree);
5669 extern tree strip_typedefs (tree);
5670 extern tree strip_typedefs_expr (tree);
5671 extern tree copy_binfo (tree, tree, tree,
5672 tree *, int);
5673 extern int member_p (const_tree);
5674 extern cp_lvalue_kind real_lvalue_p (const_tree);
5675 extern cp_lvalue_kind lvalue_kind (const_tree);
5676 extern bool lvalue_or_rvalue_with_address_p (const_tree);
5677 extern bool builtin_valid_in_constant_expr_p (const_tree);
5678 extern tree build_min (enum tree_code, tree, ...);
5679 extern tree build_min_nt (enum tree_code, ...);
5680 extern tree build_min_non_dep (enum tree_code, tree, ...);
5681 extern tree build_min_non_dep_call_vec (tree, tree, VEC(tree,gc) *);
5682 extern tree build_cplus_new (tree, tree, tsubst_flags_t);
5683 extern tree build_aggr_init_expr (tree, tree, tsubst_flags_t);
5684 extern tree get_target_expr (tree);
5685 extern tree get_target_expr_sfinae (tree, tsubst_flags_t);
5686 extern tree build_cplus_array_type (tree, tree);
5687 extern tree build_array_of_n_type (tree, int);
5688 extern tree build_array_copy (tree);
5689 extern tree build_vec_init_expr (tree, tree, tsubst_flags_t);
5690 extern void diagnose_non_constexpr_vec_init (tree);
5691 extern tree hash_tree_cons (tree, tree, tree);
5692 extern tree hash_tree_chain (tree, tree);
5693 extern tree build_qualified_name (tree, tree, tree, bool);
5694 extern int is_overloaded_fn (tree);
5695 extern tree dependent_name (tree);
5696 extern tree get_fns (tree);
5697 extern tree get_first_fn (tree);
5698 extern tree ovl_cons (tree, tree);
5699 extern tree build_overload (tree, tree);
5700 extern tree ovl_scope (tree);
5701 extern bool non_static_member_function_p (tree);
5702 extern const char *cxx_printable_name (tree, int);
5703 extern const char *cxx_printable_name_translate (tree, int);
5704 extern tree build_exception_variant (tree, tree);
5705 extern tree bind_template_template_parm (tree, tree);
5706 extern tree array_type_nelts_total (tree);
5707 extern tree array_type_nelts_top (tree);
5708 extern tree break_out_target_exprs (tree);
5709 extern tree get_type_decl (tree);
5710 extern tree decl_namespace_context (tree);
5711 extern bool decl_anon_ns_mem_p (const_tree);
5712 extern tree lvalue_type (tree);
5713 extern tree error_type (tree);
5714 extern int varargs_function_p (const_tree);
5715 extern bool really_overloaded_fn (tree);
5716 extern bool cp_tree_equal (tree, tree);
5717 extern tree no_linkage_check (tree, bool);
5718 extern void debug_binfo (tree);
5719 extern tree build_dummy_object (tree);
5720 extern tree maybe_dummy_object (tree, tree *);
5721 extern int is_dummy_object (const_tree);
5722 extern const struct attribute_spec cxx_attribute_table[];
5723 extern tree make_ptrmem_cst (tree, tree);
5724 extern tree cp_build_type_attribute_variant (tree, tree);
5725 extern tree cp_build_reference_type (tree, bool);
5726 extern tree move (tree);
5727 extern tree cp_build_qualified_type_real (tree, int, tsubst_flags_t);
5728 #define cp_build_qualified_type(TYPE, QUALS) \
5729 cp_build_qualified_type_real ((TYPE), (QUALS), tf_warning_or_error)
5730 extern bool cv_qualified_p (const_tree);
5731 extern tree cv_unqualified (tree);
5732 extern special_function_kind special_function_p (const_tree);
5733 extern int count_trees (tree);
5734 extern int char_type_p (tree);
5735 extern void verify_stmt_tree (tree);
5736 extern linkage_kind decl_linkage (tree);
5737 extern duration_kind decl_storage_duration (tree);
5738 extern tree cp_walk_subtrees (tree*, int*, walk_tree_fn,
5739 void*, struct pointer_set_t*);
5740 #define cp_walk_tree(a,b,c,d) \
5741 walk_tree_1 (a, b, c, d, cp_walk_subtrees)
5742 #define cp_walk_tree_without_duplicates(a,b,c) \
5743 walk_tree_without_duplicates_1 (a, b, c, cp_walk_subtrees)
5744 extern tree fold_if_not_in_template (tree);
5745 extern tree rvalue (tree);
5746 extern tree convert_bitfield_to_declared_type (tree);
5747 extern tree cp_save_expr (tree);
5748 extern bool cast_valid_in_integral_constant_expression_p (tree);
5749 extern bool cxx_type_hash_eq (const_tree, const_tree);
5750
5751 extern void cxx_print_statistics (void);
5752
5753 /* in ptree.c */
5754 extern void cxx_print_xnode (FILE *, tree, int);
5755 extern void cxx_print_decl (FILE *, tree, int);
5756 extern void cxx_print_type (FILE *, tree, int);
5757 extern void cxx_print_identifier (FILE *, tree, int);
5758 extern void cxx_print_error_function (diagnostic_context *,
5759 const char *,
5760 struct diagnostic_info *);
5761
5762 /* in typeck.c */
5763 extern bool cxx_mark_addressable (tree);
5764 extern int string_conv_p (const_tree, const_tree, int);
5765 extern tree cp_truthvalue_conversion (tree);
5766 extern tree condition_conversion (tree);
5767 extern tree require_complete_type (tree);
5768 extern tree require_complete_type_sfinae (tree, tsubst_flags_t);
5769 extern tree complete_type (tree);
5770 extern tree complete_type_or_else (tree, tree);
5771 extern tree complete_type_or_maybe_complain (tree, tree, tsubst_flags_t);
5772 extern int type_unknown_p (const_tree);
5773 enum { ce_derived, ce_normal, ce_exact };
5774 extern bool comp_except_specs (const_tree, const_tree, int);
5775 extern bool comptypes (tree, tree, int);
5776 extern bool same_type_ignoring_top_level_qualifiers_p (tree, tree);
5777 extern bool compparms (const_tree, const_tree);
5778 extern int comp_cv_qualification (const_tree, const_tree);
5779 extern int comp_cv_qual_signature (tree, tree);
5780 extern tree cxx_sizeof_or_alignof_expr (tree, enum tree_code, bool);
5781 extern tree cxx_sizeof_or_alignof_type (tree, enum tree_code, bool);
5782 extern tree cxx_sizeof_nowarn (tree);
5783 extern tree is_bitfield_expr_with_lowered_type (const_tree);
5784 extern tree unlowered_expr_type (const_tree);
5785 extern tree decay_conversion (tree);
5786 extern tree build_class_member_access_expr (tree, tree, tree, bool,
5787 tsubst_flags_t);
5788 extern tree finish_class_member_access_expr (tree, tree, bool,
5789 tsubst_flags_t);
5790 extern tree build_x_indirect_ref (tree, ref_operator,
5791 tsubst_flags_t);
5792 extern tree cp_build_indirect_ref (tree, ref_operator,
5793 tsubst_flags_t);
5794 extern tree build_array_ref (location_t, tree, tree);
5795 extern tree cp_build_array_ref (location_t, tree, tree,
5796 tsubst_flags_t);
5797 extern tree get_member_function_from_ptrfunc (tree *, tree);
5798 extern tree cp_build_function_call (tree, tree, tsubst_flags_t);
5799 extern tree cp_build_function_call_nary (tree, tsubst_flags_t, ...)
5800 ATTRIBUTE_SENTINEL;
5801 extern tree cp_build_function_call_vec (tree, VEC(tree,gc) **,
5802 tsubst_flags_t);
5803 extern tree build_x_binary_op (enum tree_code, tree,
5804 enum tree_code, tree,
5805 enum tree_code, tree *,
5806 tsubst_flags_t);
5807 extern tree build_x_array_ref (tree, tree, tsubst_flags_t);
5808 extern tree build_x_unary_op (enum tree_code, tree,
5809 tsubst_flags_t);
5810 extern tree cp_build_addr_expr (tree, tsubst_flags_t);
5811 extern tree cp_build_addr_expr_strict (tree, tsubst_flags_t);
5812 extern tree cp_build_unary_op (enum tree_code, tree, int,
5813 tsubst_flags_t);
5814 extern tree unary_complex_lvalue (enum tree_code, tree);
5815 extern tree build_x_conditional_expr (tree, tree, tree,
5816 tsubst_flags_t);
5817 extern tree build_x_compound_expr_from_list (tree, expr_list_kind,
5818 tsubst_flags_t);
5819 extern tree build_x_compound_expr_from_vec (VEC(tree,gc) *, const char *);
5820 extern tree build_x_compound_expr (tree, tree, tsubst_flags_t);
5821 extern tree build_compound_expr (location_t, tree, tree);
5822 extern tree cp_build_compound_expr (tree, tree, tsubst_flags_t);
5823 extern tree build_static_cast (tree, tree, tsubst_flags_t);
5824 extern tree build_reinterpret_cast (tree, tree, tsubst_flags_t);
5825 extern tree build_const_cast (tree, tree, tsubst_flags_t);
5826 extern tree build_c_cast (location_t, tree, tree);
5827 extern tree cp_build_c_cast (tree, tree, tsubst_flags_t);
5828 extern tree build_x_modify_expr (tree, enum tree_code, tree,
5829 tsubst_flags_t);
5830 extern tree cp_build_modify_expr (tree, enum tree_code, tree,
5831 tsubst_flags_t);
5832 extern tree convert_for_initialization (tree, tree, tree, int,
5833 impl_conv_rhs, tree, int,
5834 tsubst_flags_t);
5835 extern int comp_ptr_ttypes (tree, tree);
5836 extern bool comp_ptr_ttypes_const (tree, tree);
5837 extern bool error_type_p (const_tree);
5838 extern int ptr_reasonably_similar (const_tree, const_tree);
5839 extern tree build_ptrmemfunc (tree, tree, int, bool,
5840 tsubst_flags_t);
5841 extern int cp_type_quals (const_tree);
5842 extern int type_memfn_quals (const_tree);
5843 extern tree apply_memfn_quals (tree, cp_cv_quals);
5844 extern bool cp_has_mutable_p (const_tree);
5845 extern bool at_least_as_qualified_p (const_tree, const_tree);
5846 extern void cp_apply_type_quals_to_decl (int, tree);
5847 extern tree build_ptrmemfunc1 (tree, tree, tree);
5848 extern void expand_ptrmemfunc_cst (tree, tree *, tree *);
5849 extern tree type_after_usual_arithmetic_conversions (tree, tree);
5850 extern tree common_pointer_type (tree, tree);
5851 extern tree composite_pointer_type (tree, tree, tree, tree,
5852 composite_pointer_operation,
5853 tsubst_flags_t);
5854 extern tree merge_types (tree, tree);
5855 extern tree strip_array_domain (tree);
5856 extern tree check_return_expr (tree, bool *);
5857 extern tree cp_build_binary_op (location_t,
5858 enum tree_code, tree, tree,
5859 tsubst_flags_t);
5860 #define cxx_sizeof(T) cxx_sizeof_or_alignof_type (T, SIZEOF_EXPR, true)
5861 extern tree build_ptrmemfunc_access_expr (tree, tree);
5862 extern tree build_address (tree);
5863 extern tree build_typed_address (tree, tree);
5864 extern tree build_nop (tree, tree);
5865 extern tree non_reference (tree);
5866 extern tree lookup_anon_field (tree, tree);
5867 extern bool invalid_nonstatic_memfn_p (const_tree, tsubst_flags_t);
5868 extern tree convert_member_func_to_ptr (tree, tree);
5869 extern tree convert_ptrmem (tree, tree, bool, bool,
5870 tsubst_flags_t);
5871 extern int lvalue_or_else (tree, enum lvalue_use,
5872 tsubst_flags_t);
5873 extern void check_template_keyword (tree);
5874 extern bool check_raw_literal_operator (const_tree decl);
5875 extern bool check_literal_operator_args (const_tree, bool *, bool *);
5876
5877 /* in typeck2.c */
5878 extern void require_complete_eh_spec_types (tree, tree);
5879 extern void cxx_incomplete_type_diagnostic (const_tree, const_tree, diagnostic_t);
5880 #undef cxx_incomplete_type_error
5881 extern void cxx_incomplete_type_error (const_tree, const_tree);
5882 #define cxx_incomplete_type_error(V,T) \
5883 (cxx_incomplete_type_diagnostic ((V), (T), DK_ERROR))
5884 extern tree error_not_base_type (tree, tree);
5885 extern tree binfo_or_else (tree, tree);
5886 extern void cxx_readonly_error (tree, enum lvalue_use);
5887 extern void complete_type_check_abstract (tree);
5888 extern int abstract_virtuals_error (tree, tree);
5889 extern int abstract_virtuals_error_sfinae (tree, tree, tsubst_flags_t);
5890
5891 extern tree store_init_value (tree, tree, VEC(tree,gc)**, int);
5892 extern void check_narrowing (tree, tree);
5893 extern tree digest_init (tree, tree, tsubst_flags_t);
5894 extern tree digest_init_flags (tree, tree, int);
5895 extern tree build_scoped_ref (tree, tree, tree *);
5896 extern tree build_x_arrow (tree);
5897 extern tree build_m_component_ref (tree, tree);
5898 extern tree build_functional_cast (tree, tree, tsubst_flags_t);
5899 extern tree add_exception_specifier (tree, tree, int);
5900 extern tree merge_exception_specifiers (tree, tree, tree);
5901
5902 /* in mangle.c */
5903 extern void init_mangle (void);
5904 extern void mangle_decl (tree);
5905 extern const char *mangle_type_string (tree);
5906 extern tree mangle_typeinfo_for_type (tree);
5907 extern tree mangle_typeinfo_string_for_type (tree);
5908 extern tree mangle_vtbl_for_type (tree);
5909 extern tree mangle_vtt_for_type (tree);
5910 extern tree mangle_ctor_vtbl_for_type (tree, tree);
5911 extern tree mangle_thunk (tree, int, tree, tree);
5912 extern tree mangle_conv_op_name_for_type (tree);
5913 extern tree mangle_guard_variable (tree);
5914 extern tree mangle_ref_init_variable (tree);
5915
5916 /* in dump.c */
5917 extern bool cp_dump_tree (void *, tree);
5918
5919 /* In cp/cp-objcp-common.c. */
5920
5921 extern alias_set_type cxx_get_alias_set (tree);
5922 extern bool cxx_warn_unused_global_decl (const_tree);
5923 extern size_t cp_tree_size (enum tree_code);
5924 extern bool cp_var_mod_type_p (tree, tree);
5925 extern void cxx_initialize_diagnostics (diagnostic_context *);
5926 extern int cxx_types_compatible_p (tree, tree);
5927 extern void init_shadowed_var_for_decl (void);
5928 extern bool cxx_block_may_fallthru (const_tree);
5929
5930 /* in cp-gimplify.c */
5931 extern int cp_gimplify_expr (tree *, gimple_seq *,
5932 gimple_seq *);
5933 extern void cp_genericize (tree);
5934 extern bool cxx_omp_const_qual_no_mutable (tree);
5935 extern enum omp_clause_default_kind cxx_omp_predetermined_sharing (tree);
5936 extern tree cxx_omp_clause_default_ctor (tree, tree, tree);
5937 extern tree cxx_omp_clause_copy_ctor (tree, tree, tree);
5938 extern tree cxx_omp_clause_assign_op (tree, tree, tree);
5939 extern tree cxx_omp_clause_dtor (tree, tree);
5940 extern void cxx_omp_finish_clause (tree);
5941 extern bool cxx_omp_privatize_by_reference (const_tree);
5942
5943 /* in name-lookup.c */
5944 extern void suggest_alternatives_for (location_t, tree);
5945 extern tree strip_using_decl (tree);
5946
5947 /* -- end of C++ */
5948
5949 #endif /* ! GCC_CP_TREE_H */
5950