1 /* Demangler for g++ V3 ABI.
2 Copyright (C) 2003-2018 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor <ian@wasabisystems.com>.
4
5 This file is part of the libiberty library, which is part of GCC.
6
7 This file is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 In addition to the permissions in the GNU General Public License, the
13 Free Software Foundation gives you unlimited permission to link the
14 compiled version of this file into combinations with other programs,
15 and to distribute those combinations without any restriction coming
16 from the use of this file. (The General Public License restrictions
17 do apply in other respects; for example, they cover modification of
18 the file, and distribution when not linked into a combined
19 executable.)
20
21 This program is distributed in the hope that it will be useful,
22 but WITHOUT ANY WARRANTY; without even the implied warranty of
23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 GNU General Public License for more details.
25
26 You should have received a copy of the GNU General Public License
27 along with this program; if not, write to the Free Software
28 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
29 */
30
31 /* This code implements a demangler for the g++ V3 ABI. The ABI is
32 described on this web page:
33 https://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangling
34
35 This code was written while looking at the demangler written by
36 Alex Samuel <samuel@codesourcery.com>.
37
38 This code first pulls the mangled name apart into a list of
39 components, and then walks the list generating the demangled
40 name.
41
42 This file will normally define the following functions, q.v.:
43 char *cplus_demangle_v3(const char *mangled, int options)
44 char *java_demangle_v3(const char *mangled)
45 int cplus_demangle_v3_callback(const char *mangled, int options,
46 demangle_callbackref callback)
47 int java_demangle_v3_callback(const char *mangled,
48 demangle_callbackref callback)
49 enum gnu_v3_ctor_kinds is_gnu_v3_mangled_ctor (const char *name)
50 enum gnu_v3_dtor_kinds is_gnu_v3_mangled_dtor (const char *name)
51
52 Also, the interface to the component list is public, and defined in
53 demangle.h. The interface consists of these types, which are
54 defined in demangle.h:
55 enum demangle_component_type
56 struct demangle_component
57 demangle_callbackref
58 and these functions defined in this file:
59 cplus_demangle_fill_name
60 cplus_demangle_fill_extended_operator
61 cplus_demangle_fill_ctor
62 cplus_demangle_fill_dtor
63 cplus_demangle_print
64 cplus_demangle_print_callback
65 and other functions defined in the file cp-demint.c.
66
67 This file also defines some other functions and variables which are
68 only to be used by the file cp-demint.c.
69
70 Preprocessor macros you can define while compiling this file:
71
72 IN_LIBGCC2
73 If defined, this file defines the following functions, q.v.:
74 char *__cxa_demangle (const char *mangled, char *buf, size_t *len,
75 int *status)
76 int __gcclibcxx_demangle_callback (const char *,
77 void (*)
78 (const char *, size_t, void *),
79 void *)
80 instead of cplus_demangle_v3[_callback]() and
81 java_demangle_v3[_callback]().
82
83 IN_GLIBCPP_V3
84 If defined, this file defines only __cxa_demangle() and
85 __gcclibcxx_demangle_callback(), and no other publically visible
86 functions or variables.
87
88 STANDALONE_DEMANGLER
89 If defined, this file defines a main() function which demangles
90 any arguments, or, if none, demangles stdin.
91
92 CP_DEMANGLE_DEBUG
93 If defined, turns on debugging mode, which prints information on
94 stdout about the mangled string. This is not generally useful.
95
96 CHECK_DEMANGLER
97 If defined, additional sanity checks will be performed. It will
98 cause some slowdown, but will allow to catch out-of-bound access
99 errors earlier. This macro is intended for testing and debugging. */
100
101 #if defined (_AIX) && !defined (__GNUC__)
102 #pragma alloca
103 #endif
104
105 #ifdef HAVE_CONFIG_H
106 #include "config.h"
107 #endif
108
109 #include <stdio.h>
110
111 #ifdef HAVE_STDLIB_H
112 #include <stdlib.h>
113 #endif
114 #ifdef HAVE_STRING_H
115 #include <string.h>
116 #endif
117
118 #ifdef HAVE_ALLOCA_H
119 # include <alloca.h>
120 #else
121 # ifndef alloca
122 # ifdef __GNUC__
123 # define alloca __builtin_alloca
124 # else
125 extern char *alloca ();
126 # endif /* __GNUC__ */
127 # endif /* alloca */
128 #endif /* HAVE_ALLOCA_H */
129
130 #ifdef HAVE_LIMITS_H
131 #include <limits.h>
132 #endif
133 #ifndef INT_MAX
134 # define INT_MAX (int)(((unsigned int) ~0) >> 1) /* 0x7FFFFFFF */
135 #endif
136
137 #include "ansidecl.h"
138 #include "libiberty.h"
139 #include "demangle.h"
140 #include "cp-demangle.h"
141
142 /* If IN_GLIBCPP_V3 is defined, some functions are made static. We
143 also rename them via #define to avoid compiler errors when the
144 static definition conflicts with the extern declaration in a header
145 file. */
146 #ifdef IN_GLIBCPP_V3
147
148 #define CP_STATIC_IF_GLIBCPP_V3 static
149
150 #define cplus_demangle_fill_name d_fill_name
151 static int d_fill_name (struct demangle_component *, const char *, int);
152
153 #define cplus_demangle_fill_extended_operator d_fill_extended_operator
154 static int
155 d_fill_extended_operator (struct demangle_component *, int,
156 struct demangle_component *);
157
158 #define cplus_demangle_fill_ctor d_fill_ctor
159 static int
160 d_fill_ctor (struct demangle_component *, enum gnu_v3_ctor_kinds,
161 struct demangle_component *);
162
163 #define cplus_demangle_fill_dtor d_fill_dtor
164 static int
165 d_fill_dtor (struct demangle_component *, enum gnu_v3_dtor_kinds,
166 struct demangle_component *);
167
168 #define cplus_demangle_mangled_name d_mangled_name
169 static struct demangle_component *d_mangled_name (struct d_info *, int);
170
171 #define cplus_demangle_type d_type
172 static struct demangle_component *d_type (struct d_info *);
173
174 #define cplus_demangle_print d_print
175 static char *d_print (int, struct demangle_component *, int, size_t *);
176
177 #define cplus_demangle_print_callback d_print_callback
178 static int d_print_callback (int, struct demangle_component *,
179 demangle_callbackref, void *);
180
181 #define cplus_demangle_init_info d_init_info
182 static void d_init_info (const char *, int, size_t, struct d_info *);
183
184 #else /* ! defined(IN_GLIBCPP_V3) */
185 #define CP_STATIC_IF_GLIBCPP_V3
186 #endif /* ! defined(IN_GLIBCPP_V3) */
187
188 /* See if the compiler supports dynamic arrays. */
189
190 #ifdef __GNUC__
191 #define CP_DYNAMIC_ARRAYS
192 #else
193 #ifdef __STDC__
194 #ifdef __STDC_VERSION__
195 #if __STDC_VERSION__ >= 199901L
196 #define CP_DYNAMIC_ARRAYS
197 #endif /* __STDC__VERSION >= 199901L */
198 #endif /* defined (__STDC_VERSION__) */
199 #endif /* defined (__STDC__) */
200 #endif /* ! defined (__GNUC__) */
201
202 /* We avoid pulling in the ctype tables, to prevent pulling in
203 additional unresolved symbols when this code is used in a library.
204 FIXME: Is this really a valid reason? This comes from the original
205 V3 demangler code.
206
207 As of this writing this file has the following undefined references
208 when compiled with -DIN_GLIBCPP_V3: realloc, free, memcpy, strcpy,
209 strcat, strlen. */
210
211 #define IS_DIGIT(c) ((c) >= '0' && (c) <= '9')
212 #define IS_UPPER(c) ((c) >= 'A' && (c) <= 'Z')
213 #define IS_LOWER(c) ((c) >= 'a' && (c) <= 'z')
214
215 /* The prefix prepended by GCC to an identifier represnting the
216 anonymous namespace. */
217 #define ANONYMOUS_NAMESPACE_PREFIX "_GLOBAL_"
218 #define ANONYMOUS_NAMESPACE_PREFIX_LEN \
219 (sizeof (ANONYMOUS_NAMESPACE_PREFIX) - 1)
220
221 /* Information we keep for the standard substitutions. */
222
223 struct d_standard_sub_info
224 {
225 /* The code for this substitution. */
226 char code;
227 /* The simple string it expands to. */
228 const char *simple_expansion;
229 /* The length of the simple expansion. */
230 int simple_len;
231 /* The results of a full, verbose, expansion. This is used when
232 qualifying a constructor/destructor, or when in verbose mode. */
233 const char *full_expansion;
234 /* The length of the full expansion. */
235 int full_len;
236 /* What to set the last_name field of d_info to; NULL if we should
237 not set it. This is only relevant when qualifying a
238 constructor/destructor. */
239 const char *set_last_name;
240 /* The length of set_last_name. */
241 int set_last_name_len;
242 };
243
244 /* Accessors for subtrees of struct demangle_component. */
245
246 #define d_left(dc) ((dc)->u.s_binary.left)
247 #define d_right(dc) ((dc)->u.s_binary.right)
248
249 /* A list of templates. This is used while printing. */
250
251 struct d_print_template
252 {
253 /* Next template on the list. */
254 struct d_print_template *next;
255 /* This template. */
256 const struct demangle_component *template_decl;
257 };
258
259 /* A list of type modifiers. This is used while printing. */
260
261 struct d_print_mod
262 {
263 /* Next modifier on the list. These are in the reverse of the order
264 in which they appeared in the mangled string. */
265 struct d_print_mod *next;
266 /* The modifier. */
267 struct demangle_component *mod;
268 /* Whether this modifier was printed. */
269 int printed;
270 /* The list of templates which applies to this modifier. */
271 struct d_print_template *templates;
272 };
273
274 /* We use these structures to hold information during printing. */
275
276 struct d_growable_string
277 {
278 /* Buffer holding the result. */
279 char *buf;
280 /* Current length of data in buffer. */
281 size_t len;
282 /* Allocated size of buffer. */
283 size_t alc;
284 /* Set to 1 if we had a memory allocation failure. */
285 int allocation_failure;
286 };
287
288 /* Stack of components, innermost first, used to avoid loops. */
289
290 struct d_component_stack
291 {
292 /* This component. */
293 const struct demangle_component *dc;
294 /* This component's parent. */
295 const struct d_component_stack *parent;
296 };
297
298 /* A demangle component and some scope captured when it was first
299 traversed. */
300
301 struct d_saved_scope
302 {
303 /* The component whose scope this is. */
304 const struct demangle_component *container;
305 /* The list of templates, if any, that was current when this
306 scope was captured. */
307 struct d_print_template *templates;
308 };
309
310 /* Checkpoint structure to allow backtracking. This holds copies
311 of the fields of struct d_info that need to be restored
312 if a trial parse needs to be backtracked over. */
313
314 struct d_info_checkpoint
315 {
316 const char *n;
317 int next_comp;
318 int next_sub;
319 int expansion;
320 };
321
322 /* Maximum number of times d_print_comp may be called recursively. */
323 #define MAX_RECURSION_COUNT 1024
324
325 enum { D_PRINT_BUFFER_LENGTH = 256 };
326 struct d_print_info
327 {
328 /* Fixed-length allocated buffer for demangled data, flushed to the
329 callback with a NUL termination once full. */
330 char buf[D_PRINT_BUFFER_LENGTH];
331 /* Current length of data in buffer. */
332 size_t len;
333 /* The last character printed, saved individually so that it survives
334 any buffer flush. */
335 char last_char;
336 /* Callback function to handle demangled buffer flush. */
337 demangle_callbackref callback;
338 /* Opaque callback argument. */
339 void *opaque;
340 /* The current list of templates, if any. */
341 struct d_print_template *templates;
342 /* The current list of modifiers (e.g., pointer, reference, etc.),
343 if any. */
344 struct d_print_mod *modifiers;
345 /* Set to 1 if we saw a demangling error. */
346 int demangle_failure;
347 /* Number of times d_print_comp was recursively called. Should not
348 be bigger than MAX_RECURSION_COUNT. */
349 int recursion;
350 /* Non-zero if we're printing a lambda argument. A template
351 parameter reference actually means 'auto'. */
352 int is_lambda_arg;
353 /* The current index into any template argument packs we are using
354 for printing, or -1 to print the whole pack. */
355 int pack_index;
356 /* Number of d_print_flush calls so far. */
357 unsigned long int flush_count;
358 /* Stack of components, innermost first, used to avoid loops. */
359 const struct d_component_stack *component_stack;
360 /* Array of saved scopes for evaluating substitutions. */
361 struct d_saved_scope *saved_scopes;
362 /* Index of the next unused saved scope in the above array. */
363 int next_saved_scope;
364 /* Number of saved scopes in the above array. */
365 int num_saved_scopes;
366 /* Array of templates for saving into scopes. */
367 struct d_print_template *copy_templates;
368 /* Index of the next unused copy template in the above array. */
369 int next_copy_template;
370 /* Number of copy templates in the above array. */
371 int num_copy_templates;
372 /* The nearest enclosing template, if any. */
373 const struct demangle_component *current_template;
374 };
375
376 #ifdef CP_DEMANGLE_DEBUG
377 static void d_dump (struct demangle_component *, int);
378 #endif
379
380 static struct demangle_component *
381 d_make_empty (struct d_info *);
382
383 static struct demangle_component *
384 d_make_comp (struct d_info *, enum demangle_component_type,
385 struct demangle_component *,
386 struct demangle_component *);
387
388 static struct demangle_component *
389 d_make_name (struct d_info *, const char *, int);
390
391 static struct demangle_component *
392 d_make_demangle_mangled_name (struct d_info *, const char *);
393
394 static struct demangle_component *
395 d_make_builtin_type (struct d_info *,
396 const struct demangle_builtin_type_info *);
397
398 static struct demangle_component *
399 d_make_operator (struct d_info *,
400 const struct demangle_operator_info *);
401
402 static struct demangle_component *
403 d_make_extended_operator (struct d_info *, int,
404 struct demangle_component *);
405
406 static struct demangle_component *
407 d_make_ctor (struct d_info *, enum gnu_v3_ctor_kinds,
408 struct demangle_component *);
409
410 static struct demangle_component *
411 d_make_dtor (struct d_info *, enum gnu_v3_dtor_kinds,
412 struct demangle_component *);
413
414 static struct demangle_component *
415 d_make_template_param (struct d_info *, int);
416
417 static struct demangle_component *
418 d_make_sub (struct d_info *, const char *, int);
419
420 static int
421 has_return_type (struct demangle_component *);
422
423 static int
424 is_ctor_dtor_or_conversion (struct demangle_component *);
425
426 static struct demangle_component *d_encoding (struct d_info *, int);
427
428 static struct demangle_component *d_name (struct d_info *);
429
430 static struct demangle_component *d_nested_name (struct d_info *);
431
432 static struct demangle_component *d_prefix (struct d_info *);
433
434 static struct demangle_component *d_unqualified_name (struct d_info *);
435
436 static struct demangle_component *d_source_name (struct d_info *);
437
438 static int d_number (struct d_info *);
439
440 static struct demangle_component *d_identifier (struct d_info *, int);
441
442 static struct demangle_component *d_operator_name (struct d_info *);
443
444 static struct demangle_component *d_special_name (struct d_info *);
445
446 static struct demangle_component *d_parmlist (struct d_info *);
447
448 static int d_call_offset (struct d_info *, int);
449
450 static struct demangle_component *d_ctor_dtor_name (struct d_info *);
451
452 static struct demangle_component **
453 d_cv_qualifiers (struct d_info *, struct demangle_component **, int);
454
455 static struct demangle_component *
456 d_ref_qualifier (struct d_info *, struct demangle_component *);
457
458 static struct demangle_component *
459 d_function_type (struct d_info *);
460
461 static struct demangle_component *
462 d_bare_function_type (struct d_info *, int);
463
464 static struct demangle_component *
465 d_class_enum_type (struct d_info *);
466
467 static struct demangle_component *d_array_type (struct d_info *);
468
469 static struct demangle_component *d_vector_type (struct d_info *);
470
471 static struct demangle_component *
472 d_pointer_to_member_type (struct d_info *);
473
474 static struct demangle_component *
475 d_template_param (struct d_info *);
476
477 static struct demangle_component *d_template_args (struct d_info *);
478 static struct demangle_component *d_template_args_1 (struct d_info *);
479
480 static struct demangle_component *
481 d_template_arg (struct d_info *);
482
483 static struct demangle_component *d_expression (struct d_info *);
484
485 static struct demangle_component *d_expr_primary (struct d_info *);
486
487 static struct demangle_component *d_local_name (struct d_info *);
488
489 static int d_discriminator (struct d_info *);
490
491 static struct demangle_component *d_lambda (struct d_info *);
492
493 static struct demangle_component *d_unnamed_type (struct d_info *);
494
495 static struct demangle_component *
496 d_clone_suffix (struct d_info *, struct demangle_component *);
497
498 static int
499 d_add_substitution (struct d_info *, struct demangle_component *);
500
501 static struct demangle_component *d_substitution (struct d_info *, int);
502
503 static void d_checkpoint (struct d_info *, struct d_info_checkpoint *);
504
505 static void d_backtrack (struct d_info *, struct d_info_checkpoint *);
506
507 static void d_growable_string_init (struct d_growable_string *, size_t);
508
509 static inline void
510 d_growable_string_resize (struct d_growable_string *, size_t);
511
512 static inline void
513 d_growable_string_append_buffer (struct d_growable_string *,
514 const char *, size_t);
515 static void
516 d_growable_string_callback_adapter (const char *, size_t, void *);
517
518 static void
519 d_print_init (struct d_print_info *, demangle_callbackref, void *,
520 const struct demangle_component *);
521
522 static inline void d_print_error (struct d_print_info *);
523
524 static inline int d_print_saw_error (struct d_print_info *);
525
526 static inline void d_print_flush (struct d_print_info *);
527
528 static inline void d_append_char (struct d_print_info *, char);
529
530 static inline void d_append_buffer (struct d_print_info *,
531 const char *, size_t);
532
533 static inline void d_append_string (struct d_print_info *, const char *);
534
535 static inline char d_last_char (struct d_print_info *);
536
537 static void
538 d_print_comp (struct d_print_info *, int, struct demangle_component *);
539
540 static void
541 d_print_java_identifier (struct d_print_info *, const char *, int);
542
543 static void
544 d_print_mod_list (struct d_print_info *, int, struct d_print_mod *, int);
545
546 static void
547 d_print_mod (struct d_print_info *, int, struct demangle_component *);
548
549 static void
550 d_print_function_type (struct d_print_info *, int,
551 struct demangle_component *,
552 struct d_print_mod *);
553
554 static void
555 d_print_array_type (struct d_print_info *, int,
556 struct demangle_component *,
557 struct d_print_mod *);
558
559 static void
560 d_print_expr_op (struct d_print_info *, int, struct demangle_component *);
561
562 static void d_print_cast (struct d_print_info *, int,
563 struct demangle_component *);
564 static void d_print_conversion (struct d_print_info *, int,
565 struct demangle_component *);
566
567 static int d_demangle_callback (const char *, int,
568 demangle_callbackref, void *);
569 static char *d_demangle (const char *, int, size_t *);
570
571 #define FNQUAL_COMPONENT_CASE \
572 case DEMANGLE_COMPONENT_RESTRICT_THIS: \
573 case DEMANGLE_COMPONENT_VOLATILE_THIS: \
574 case DEMANGLE_COMPONENT_CONST_THIS: \
575 case DEMANGLE_COMPONENT_REFERENCE_THIS: \
576 case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS: \
577 case DEMANGLE_COMPONENT_TRANSACTION_SAFE: \
578 case DEMANGLE_COMPONENT_NOEXCEPT: \
579 case DEMANGLE_COMPONENT_THROW_SPEC
580
581 /* True iff TYPE is a demangling component representing a
582 function-type-qualifier. */
583
584 static int
is_fnqual_component_type(enum demangle_component_type type)585 is_fnqual_component_type (enum demangle_component_type type)
586 {
587 switch (type)
588 {
589 FNQUAL_COMPONENT_CASE:
590 return 1;
591 default:
592 break;
593 }
594 return 0;
595 }
596
597
598 #ifdef CP_DEMANGLE_DEBUG
599
600 static void
d_dump(struct demangle_component * dc,int indent)601 d_dump (struct demangle_component *dc, int indent)
602 {
603 int i;
604
605 if (dc == NULL)
606 {
607 if (indent == 0)
608 printf ("failed demangling\n");
609 return;
610 }
611
612 for (i = 0; i < indent; ++i)
613 putchar (' ');
614
615 switch (dc->type)
616 {
617 case DEMANGLE_COMPONENT_NAME:
618 printf ("name '%.*s'\n", dc->u.s_name.len, dc->u.s_name.s);
619 return;
620 case DEMANGLE_COMPONENT_TAGGED_NAME:
621 printf ("tagged name\n");
622 d_dump (dc->u.s_binary.left, indent + 2);
623 d_dump (dc->u.s_binary.right, indent + 2);
624 return;
625 case DEMANGLE_COMPONENT_TEMPLATE_PARAM:
626 printf ("template parameter %ld\n", dc->u.s_number.number);
627 return;
628 case DEMANGLE_COMPONENT_FUNCTION_PARAM:
629 printf ("function parameter %ld\n", dc->u.s_number.number);
630 return;
631 case DEMANGLE_COMPONENT_CTOR:
632 printf ("constructor %d\n", (int) dc->u.s_ctor.kind);
633 d_dump (dc->u.s_ctor.name, indent + 2);
634 return;
635 case DEMANGLE_COMPONENT_DTOR:
636 printf ("destructor %d\n", (int) dc->u.s_dtor.kind);
637 d_dump (dc->u.s_dtor.name, indent + 2);
638 return;
639 case DEMANGLE_COMPONENT_SUB_STD:
640 printf ("standard substitution %s\n", dc->u.s_string.string);
641 return;
642 case DEMANGLE_COMPONENT_BUILTIN_TYPE:
643 printf ("builtin type %s\n", dc->u.s_builtin.type->name);
644 return;
645 case DEMANGLE_COMPONENT_OPERATOR:
646 printf ("operator %s\n", dc->u.s_operator.op->name);
647 return;
648 case DEMANGLE_COMPONENT_EXTENDED_OPERATOR:
649 printf ("extended operator with %d args\n",
650 dc->u.s_extended_operator.args);
651 d_dump (dc->u.s_extended_operator.name, indent + 2);
652 return;
653
654 case DEMANGLE_COMPONENT_QUAL_NAME:
655 printf ("qualified name\n");
656 break;
657 case DEMANGLE_COMPONENT_LOCAL_NAME:
658 printf ("local name\n");
659 break;
660 case DEMANGLE_COMPONENT_TYPED_NAME:
661 printf ("typed name\n");
662 break;
663 case DEMANGLE_COMPONENT_TEMPLATE:
664 printf ("template\n");
665 break;
666 case DEMANGLE_COMPONENT_VTABLE:
667 printf ("vtable\n");
668 break;
669 case DEMANGLE_COMPONENT_VTT:
670 printf ("VTT\n");
671 break;
672 case DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE:
673 printf ("construction vtable\n");
674 break;
675 case DEMANGLE_COMPONENT_TYPEINFO:
676 printf ("typeinfo\n");
677 break;
678 case DEMANGLE_COMPONENT_TYPEINFO_NAME:
679 printf ("typeinfo name\n");
680 break;
681 case DEMANGLE_COMPONENT_TYPEINFO_FN:
682 printf ("typeinfo function\n");
683 break;
684 case DEMANGLE_COMPONENT_THUNK:
685 printf ("thunk\n");
686 break;
687 case DEMANGLE_COMPONENT_VIRTUAL_THUNK:
688 printf ("virtual thunk\n");
689 break;
690 case DEMANGLE_COMPONENT_COVARIANT_THUNK:
691 printf ("covariant thunk\n");
692 break;
693 case DEMANGLE_COMPONENT_JAVA_CLASS:
694 printf ("java class\n");
695 break;
696 case DEMANGLE_COMPONENT_GUARD:
697 printf ("guard\n");
698 break;
699 case DEMANGLE_COMPONENT_REFTEMP:
700 printf ("reference temporary\n");
701 break;
702 case DEMANGLE_COMPONENT_HIDDEN_ALIAS:
703 printf ("hidden alias\n");
704 break;
705 case DEMANGLE_COMPONENT_TRANSACTION_CLONE:
706 printf ("transaction clone\n");
707 break;
708 case DEMANGLE_COMPONENT_NONTRANSACTION_CLONE:
709 printf ("non-transaction clone\n");
710 break;
711 case DEMANGLE_COMPONENT_RESTRICT:
712 printf ("restrict\n");
713 break;
714 case DEMANGLE_COMPONENT_VOLATILE:
715 printf ("volatile\n");
716 break;
717 case DEMANGLE_COMPONENT_CONST:
718 printf ("const\n");
719 break;
720 case DEMANGLE_COMPONENT_RESTRICT_THIS:
721 printf ("restrict this\n");
722 break;
723 case DEMANGLE_COMPONENT_VOLATILE_THIS:
724 printf ("volatile this\n");
725 break;
726 case DEMANGLE_COMPONENT_CONST_THIS:
727 printf ("const this\n");
728 break;
729 case DEMANGLE_COMPONENT_REFERENCE_THIS:
730 printf ("reference this\n");
731 break;
732 case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS:
733 printf ("rvalue reference this\n");
734 break;
735 case DEMANGLE_COMPONENT_TRANSACTION_SAFE:
736 printf ("transaction_safe this\n");
737 break;
738 case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
739 printf ("vendor type qualifier\n");
740 break;
741 case DEMANGLE_COMPONENT_POINTER:
742 printf ("pointer\n");
743 break;
744 case DEMANGLE_COMPONENT_REFERENCE:
745 printf ("reference\n");
746 break;
747 case DEMANGLE_COMPONENT_RVALUE_REFERENCE:
748 printf ("rvalue reference\n");
749 break;
750 case DEMANGLE_COMPONENT_COMPLEX:
751 printf ("complex\n");
752 break;
753 case DEMANGLE_COMPONENT_IMAGINARY:
754 printf ("imaginary\n");
755 break;
756 case DEMANGLE_COMPONENT_VENDOR_TYPE:
757 printf ("vendor type\n");
758 break;
759 case DEMANGLE_COMPONENT_FUNCTION_TYPE:
760 printf ("function type\n");
761 break;
762 case DEMANGLE_COMPONENT_ARRAY_TYPE:
763 printf ("array type\n");
764 break;
765 case DEMANGLE_COMPONENT_PTRMEM_TYPE:
766 printf ("pointer to member type\n");
767 break;
768 case DEMANGLE_COMPONENT_FIXED_TYPE:
769 printf ("fixed-point type, accum? %d, sat? %d\n",
770 dc->u.s_fixed.accum, dc->u.s_fixed.sat);
771 d_dump (dc->u.s_fixed.length, indent + 2);
772 break;
773 case DEMANGLE_COMPONENT_ARGLIST:
774 printf ("argument list\n");
775 break;
776 case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST:
777 printf ("template argument list\n");
778 break;
779 case DEMANGLE_COMPONENT_INITIALIZER_LIST:
780 printf ("initializer list\n");
781 break;
782 case DEMANGLE_COMPONENT_CAST:
783 printf ("cast\n");
784 break;
785 case DEMANGLE_COMPONENT_CONVERSION:
786 printf ("conversion operator\n");
787 break;
788 case DEMANGLE_COMPONENT_NULLARY:
789 printf ("nullary operator\n");
790 break;
791 case DEMANGLE_COMPONENT_UNARY:
792 printf ("unary operator\n");
793 break;
794 case DEMANGLE_COMPONENT_BINARY:
795 printf ("binary operator\n");
796 break;
797 case DEMANGLE_COMPONENT_BINARY_ARGS:
798 printf ("binary operator arguments\n");
799 break;
800 case DEMANGLE_COMPONENT_TRINARY:
801 printf ("trinary operator\n");
802 break;
803 case DEMANGLE_COMPONENT_TRINARY_ARG1:
804 printf ("trinary operator arguments 1\n");
805 break;
806 case DEMANGLE_COMPONENT_TRINARY_ARG2:
807 printf ("trinary operator arguments 1\n");
808 break;
809 case DEMANGLE_COMPONENT_LITERAL:
810 printf ("literal\n");
811 break;
812 case DEMANGLE_COMPONENT_LITERAL_NEG:
813 printf ("negative literal\n");
814 break;
815 case DEMANGLE_COMPONENT_JAVA_RESOURCE:
816 printf ("java resource\n");
817 break;
818 case DEMANGLE_COMPONENT_COMPOUND_NAME:
819 printf ("compound name\n");
820 break;
821 case DEMANGLE_COMPONENT_CHARACTER:
822 printf ("character '%c'\n", dc->u.s_character.character);
823 return;
824 case DEMANGLE_COMPONENT_NUMBER:
825 printf ("number %ld\n", dc->u.s_number.number);
826 return;
827 case DEMANGLE_COMPONENT_DECLTYPE:
828 printf ("decltype\n");
829 break;
830 case DEMANGLE_COMPONENT_PACK_EXPANSION:
831 printf ("pack expansion\n");
832 break;
833 case DEMANGLE_COMPONENT_TLS_INIT:
834 printf ("tls init function\n");
835 break;
836 case DEMANGLE_COMPONENT_TLS_WRAPPER:
837 printf ("tls wrapper function\n");
838 break;
839 case DEMANGLE_COMPONENT_DEFAULT_ARG:
840 printf ("default argument %d\n", dc->u.s_unary_num.num);
841 d_dump (dc->u.s_unary_num.sub, indent+2);
842 return;
843 case DEMANGLE_COMPONENT_LAMBDA:
844 printf ("lambda %d\n", dc->u.s_unary_num.num);
845 d_dump (dc->u.s_unary_num.sub, indent+2);
846 return;
847 }
848
849 d_dump (d_left (dc), indent + 2);
850 d_dump (d_right (dc), indent + 2);
851 }
852
853 #endif /* CP_DEMANGLE_DEBUG */
854
855 /* Fill in a DEMANGLE_COMPONENT_NAME. */
856
857 CP_STATIC_IF_GLIBCPP_V3
858 int
cplus_demangle_fill_name(struct demangle_component * p,const char * s,int len)859 cplus_demangle_fill_name (struct demangle_component *p, const char *s, int len)
860 {
861 if (p == NULL || s == NULL || len == 0)
862 return 0;
863 p->d_printing = 0;
864 p->type = DEMANGLE_COMPONENT_NAME;
865 p->u.s_name.s = s;
866 p->u.s_name.len = len;
867 return 1;
868 }
869
870 /* Fill in a DEMANGLE_COMPONENT_EXTENDED_OPERATOR. */
871
872 CP_STATIC_IF_GLIBCPP_V3
873 int
cplus_demangle_fill_extended_operator(struct demangle_component * p,int args,struct demangle_component * name)874 cplus_demangle_fill_extended_operator (struct demangle_component *p, int args,
875 struct demangle_component *name)
876 {
877 if (p == NULL || args < 0 || name == NULL)
878 return 0;
879 p->d_printing = 0;
880 p->type = DEMANGLE_COMPONENT_EXTENDED_OPERATOR;
881 p->u.s_extended_operator.args = args;
882 p->u.s_extended_operator.name = name;
883 return 1;
884 }
885
886 /* Fill in a DEMANGLE_COMPONENT_CTOR. */
887
888 CP_STATIC_IF_GLIBCPP_V3
889 int
cplus_demangle_fill_ctor(struct demangle_component * p,enum gnu_v3_ctor_kinds kind,struct demangle_component * name)890 cplus_demangle_fill_ctor (struct demangle_component *p,
891 enum gnu_v3_ctor_kinds kind,
892 struct demangle_component *name)
893 {
894 if (p == NULL
895 || name == NULL
896 || (int) kind < gnu_v3_complete_object_ctor
897 || (int) kind > gnu_v3_object_ctor_group)
898 return 0;
899 p->d_printing = 0;
900 p->type = DEMANGLE_COMPONENT_CTOR;
901 p->u.s_ctor.kind = kind;
902 p->u.s_ctor.name = name;
903 return 1;
904 }
905
906 /* Fill in a DEMANGLE_COMPONENT_DTOR. */
907
908 CP_STATIC_IF_GLIBCPP_V3
909 int
cplus_demangle_fill_dtor(struct demangle_component * p,enum gnu_v3_dtor_kinds kind,struct demangle_component * name)910 cplus_demangle_fill_dtor (struct demangle_component *p,
911 enum gnu_v3_dtor_kinds kind,
912 struct demangle_component *name)
913 {
914 if (p == NULL
915 || name == NULL
916 || (int) kind < gnu_v3_deleting_dtor
917 || (int) kind > gnu_v3_object_dtor_group)
918 return 0;
919 p->d_printing = 0;
920 p->type = DEMANGLE_COMPONENT_DTOR;
921 p->u.s_dtor.kind = kind;
922 p->u.s_dtor.name = name;
923 return 1;
924 }
925
926 /* Add a new component. */
927
928 static struct demangle_component *
d_make_empty(struct d_info * di)929 d_make_empty (struct d_info *di)
930 {
931 struct demangle_component *p;
932
933 if (di->next_comp >= di->num_comps)
934 return NULL;
935 p = &di->comps[di->next_comp];
936 p->d_printing = 0;
937 ++di->next_comp;
938 return p;
939 }
940
941 /* Add a new generic component. */
942
943 static struct demangle_component *
d_make_comp(struct d_info * di,enum demangle_component_type type,struct demangle_component * left,struct demangle_component * right)944 d_make_comp (struct d_info *di, enum demangle_component_type type,
945 struct demangle_component *left,
946 struct demangle_component *right)
947 {
948 struct demangle_component *p;
949
950 /* We check for errors here. A typical error would be a NULL return
951 from a subroutine. We catch those here, and return NULL
952 upward. */
953 switch (type)
954 {
955 /* These types require two parameters. */
956 case DEMANGLE_COMPONENT_QUAL_NAME:
957 case DEMANGLE_COMPONENT_LOCAL_NAME:
958 case DEMANGLE_COMPONENT_TYPED_NAME:
959 case DEMANGLE_COMPONENT_TAGGED_NAME:
960 case DEMANGLE_COMPONENT_TEMPLATE:
961 case DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE:
962 case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
963 case DEMANGLE_COMPONENT_PTRMEM_TYPE:
964 case DEMANGLE_COMPONENT_UNARY:
965 case DEMANGLE_COMPONENT_BINARY:
966 case DEMANGLE_COMPONENT_BINARY_ARGS:
967 case DEMANGLE_COMPONENT_TRINARY:
968 case DEMANGLE_COMPONENT_TRINARY_ARG1:
969 case DEMANGLE_COMPONENT_LITERAL:
970 case DEMANGLE_COMPONENT_LITERAL_NEG:
971 case DEMANGLE_COMPONENT_COMPOUND_NAME:
972 case DEMANGLE_COMPONENT_VECTOR_TYPE:
973 case DEMANGLE_COMPONENT_CLONE:
974 if (left == NULL || right == NULL)
975 return NULL;
976 break;
977
978 /* These types only require one parameter. */
979 case DEMANGLE_COMPONENT_VTABLE:
980 case DEMANGLE_COMPONENT_VTT:
981 case DEMANGLE_COMPONENT_TYPEINFO:
982 case DEMANGLE_COMPONENT_TYPEINFO_NAME:
983 case DEMANGLE_COMPONENT_TYPEINFO_FN:
984 case DEMANGLE_COMPONENT_THUNK:
985 case DEMANGLE_COMPONENT_VIRTUAL_THUNK:
986 case DEMANGLE_COMPONENT_COVARIANT_THUNK:
987 case DEMANGLE_COMPONENT_JAVA_CLASS:
988 case DEMANGLE_COMPONENT_GUARD:
989 case DEMANGLE_COMPONENT_TLS_INIT:
990 case DEMANGLE_COMPONENT_TLS_WRAPPER:
991 case DEMANGLE_COMPONENT_REFTEMP:
992 case DEMANGLE_COMPONENT_HIDDEN_ALIAS:
993 case DEMANGLE_COMPONENT_TRANSACTION_CLONE:
994 case DEMANGLE_COMPONENT_NONTRANSACTION_CLONE:
995 case DEMANGLE_COMPONENT_POINTER:
996 case DEMANGLE_COMPONENT_REFERENCE:
997 case DEMANGLE_COMPONENT_RVALUE_REFERENCE:
998 case DEMANGLE_COMPONENT_COMPLEX:
999 case DEMANGLE_COMPONENT_IMAGINARY:
1000 case DEMANGLE_COMPONENT_VENDOR_TYPE:
1001 case DEMANGLE_COMPONENT_CAST:
1002 case DEMANGLE_COMPONENT_CONVERSION:
1003 case DEMANGLE_COMPONENT_JAVA_RESOURCE:
1004 case DEMANGLE_COMPONENT_DECLTYPE:
1005 case DEMANGLE_COMPONENT_PACK_EXPANSION:
1006 case DEMANGLE_COMPONENT_GLOBAL_CONSTRUCTORS:
1007 case DEMANGLE_COMPONENT_GLOBAL_DESTRUCTORS:
1008 case DEMANGLE_COMPONENT_NULLARY:
1009 case DEMANGLE_COMPONENT_TRINARY_ARG2:
1010 if (left == NULL)
1011 return NULL;
1012 break;
1013
1014 /* This needs a right parameter, but the left parameter can be
1015 empty. */
1016 case DEMANGLE_COMPONENT_ARRAY_TYPE:
1017 case DEMANGLE_COMPONENT_INITIALIZER_LIST:
1018 if (right == NULL)
1019 return NULL;
1020 break;
1021
1022 /* These are allowed to have no parameters--in some cases they
1023 will be filled in later. */
1024 case DEMANGLE_COMPONENT_FUNCTION_TYPE:
1025 case DEMANGLE_COMPONENT_RESTRICT:
1026 case DEMANGLE_COMPONENT_VOLATILE:
1027 case DEMANGLE_COMPONENT_CONST:
1028 case DEMANGLE_COMPONENT_ARGLIST:
1029 case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST:
1030 FNQUAL_COMPONENT_CASE:
1031 break;
1032
1033 /* Other types should not be seen here. */
1034 default:
1035 return NULL;
1036 }
1037
1038 p = d_make_empty (di);
1039 if (p != NULL)
1040 {
1041 p->type = type;
1042 p->u.s_binary.left = left;
1043 p->u.s_binary.right = right;
1044 }
1045 return p;
1046 }
1047
1048 /* Add a new demangle mangled name component. */
1049
1050 static struct demangle_component *
d_make_demangle_mangled_name(struct d_info * di,const char * s)1051 d_make_demangle_mangled_name (struct d_info *di, const char *s)
1052 {
1053 if (d_peek_char (di) != '_' || d_peek_next_char (di) != 'Z')
1054 return d_make_name (di, s, strlen (s));
1055 d_advance (di, 2);
1056 return d_encoding (di, 0);
1057 }
1058
1059 /* Add a new name component. */
1060
1061 static struct demangle_component *
d_make_name(struct d_info * di,const char * s,int len)1062 d_make_name (struct d_info *di, const char *s, int len)
1063 {
1064 struct demangle_component *p;
1065
1066 p = d_make_empty (di);
1067 if (! cplus_demangle_fill_name (p, s, len))
1068 return NULL;
1069 return p;
1070 }
1071
1072 /* Add a new builtin type component. */
1073
1074 static struct demangle_component *
d_make_builtin_type(struct d_info * di,const struct demangle_builtin_type_info * type)1075 d_make_builtin_type (struct d_info *di,
1076 const struct demangle_builtin_type_info *type)
1077 {
1078 struct demangle_component *p;
1079
1080 if (type == NULL)
1081 return NULL;
1082 p = d_make_empty (di);
1083 if (p != NULL)
1084 {
1085 p->type = DEMANGLE_COMPONENT_BUILTIN_TYPE;
1086 p->u.s_builtin.type = type;
1087 }
1088 return p;
1089 }
1090
1091 /* Add a new operator component. */
1092
1093 static struct demangle_component *
d_make_operator(struct d_info * di,const struct demangle_operator_info * op)1094 d_make_operator (struct d_info *di, const struct demangle_operator_info *op)
1095 {
1096 struct demangle_component *p;
1097
1098 p = d_make_empty (di);
1099 if (p != NULL)
1100 {
1101 p->type = DEMANGLE_COMPONENT_OPERATOR;
1102 p->u.s_operator.op = op;
1103 }
1104 return p;
1105 }
1106
1107 /* Add a new extended operator component. */
1108
1109 static struct demangle_component *
d_make_extended_operator(struct d_info * di,int args,struct demangle_component * name)1110 d_make_extended_operator (struct d_info *di, int args,
1111 struct demangle_component *name)
1112 {
1113 struct demangle_component *p;
1114
1115 p = d_make_empty (di);
1116 if (! cplus_demangle_fill_extended_operator (p, args, name))
1117 return NULL;
1118 return p;
1119 }
1120
1121 static struct demangle_component *
d_make_default_arg(struct d_info * di,int num,struct demangle_component * sub)1122 d_make_default_arg (struct d_info *di, int num,
1123 struct demangle_component *sub)
1124 {
1125 struct demangle_component *p = d_make_empty (di);
1126 if (p)
1127 {
1128 p->type = DEMANGLE_COMPONENT_DEFAULT_ARG;
1129 p->u.s_unary_num.num = num;
1130 p->u.s_unary_num.sub = sub;
1131 }
1132 return p;
1133 }
1134
1135 /* Add a new constructor component. */
1136
1137 static struct demangle_component *
d_make_ctor(struct d_info * di,enum gnu_v3_ctor_kinds kind,struct demangle_component * name)1138 d_make_ctor (struct d_info *di, enum gnu_v3_ctor_kinds kind,
1139 struct demangle_component *name)
1140 {
1141 struct demangle_component *p;
1142
1143 p = d_make_empty (di);
1144 if (! cplus_demangle_fill_ctor (p, kind, name))
1145 return NULL;
1146 return p;
1147 }
1148
1149 /* Add a new destructor component. */
1150
1151 static struct demangle_component *
d_make_dtor(struct d_info * di,enum gnu_v3_dtor_kinds kind,struct demangle_component * name)1152 d_make_dtor (struct d_info *di, enum gnu_v3_dtor_kinds kind,
1153 struct demangle_component *name)
1154 {
1155 struct demangle_component *p;
1156
1157 p = d_make_empty (di);
1158 if (! cplus_demangle_fill_dtor (p, kind, name))
1159 return NULL;
1160 return p;
1161 }
1162
1163 /* Add a new template parameter. */
1164
1165 static struct demangle_component *
d_make_template_param(struct d_info * di,int i)1166 d_make_template_param (struct d_info *di, int i)
1167 {
1168 struct demangle_component *p;
1169
1170 p = d_make_empty (di);
1171 if (p != NULL)
1172 {
1173 p->type = DEMANGLE_COMPONENT_TEMPLATE_PARAM;
1174 p->u.s_number.number = i;
1175 }
1176 return p;
1177 }
1178
1179 /* Add a new function parameter. */
1180
1181 static struct demangle_component *
d_make_function_param(struct d_info * di,int i)1182 d_make_function_param (struct d_info *di, int i)
1183 {
1184 struct demangle_component *p;
1185
1186 p = d_make_empty (di);
1187 if (p != NULL)
1188 {
1189 p->type = DEMANGLE_COMPONENT_FUNCTION_PARAM;
1190 p->u.s_number.number = i;
1191 }
1192 return p;
1193 }
1194
1195 /* Add a new standard substitution component. */
1196
1197 static struct demangle_component *
d_make_sub(struct d_info * di,const char * name,int len)1198 d_make_sub (struct d_info *di, const char *name, int len)
1199 {
1200 struct demangle_component *p;
1201
1202 p = d_make_empty (di);
1203 if (p != NULL)
1204 {
1205 p->type = DEMANGLE_COMPONENT_SUB_STD;
1206 p->u.s_string.string = name;
1207 p->u.s_string.len = len;
1208 }
1209 return p;
1210 }
1211
1212 /* <mangled-name> ::= _Z <encoding> [<clone-suffix>]*
1213
1214 TOP_LEVEL is non-zero when called at the top level. */
1215
1216 CP_STATIC_IF_GLIBCPP_V3
1217 struct demangle_component *
cplus_demangle_mangled_name(struct d_info * di,int top_level)1218 cplus_demangle_mangled_name (struct d_info *di, int top_level)
1219 {
1220 struct demangle_component *p;
1221
1222 if (! d_check_char (di, '_')
1223 /* Allow missing _ if not at toplevel to work around a
1224 bug in G++ abi-version=2 mangling; see the comment in
1225 write_template_arg. */
1226 && top_level)
1227 return NULL;
1228 if (! d_check_char (di, 'Z'))
1229 return NULL;
1230 p = d_encoding (di, top_level);
1231
1232 /* If at top level and parsing parameters, check for a clone
1233 suffix. */
1234 if (top_level && (di->options & DMGL_PARAMS) != 0)
1235 while (d_peek_char (di) == '.'
1236 && (IS_LOWER (d_peek_next_char (di))
1237 || d_peek_next_char (di) == '_'
1238 || IS_DIGIT (d_peek_next_char (di))))
1239 p = d_clone_suffix (di, p);
1240
1241 return p;
1242 }
1243
1244 /* Return whether a function should have a return type. The argument
1245 is the function name, which may be qualified in various ways. The
1246 rules are that template functions have return types with some
1247 exceptions, function types which are not part of a function name
1248 mangling have return types with some exceptions, and non-template
1249 function names do not have return types. The exceptions are that
1250 constructors, destructors, and conversion operators do not have
1251 return types. */
1252
1253 static int
has_return_type(struct demangle_component * dc)1254 has_return_type (struct demangle_component *dc)
1255 {
1256 if (dc == NULL)
1257 return 0;
1258 switch (dc->type)
1259 {
1260 default:
1261 return 0;
1262 case DEMANGLE_COMPONENT_LOCAL_NAME:
1263 return has_return_type (d_right (dc));
1264 case DEMANGLE_COMPONENT_TEMPLATE:
1265 return ! is_ctor_dtor_or_conversion (d_left (dc));
1266 FNQUAL_COMPONENT_CASE:
1267 return has_return_type (d_left (dc));
1268 }
1269 }
1270
1271 /* Return whether a name is a constructor, a destructor, or a
1272 conversion operator. */
1273
1274 static int
is_ctor_dtor_or_conversion(struct demangle_component * dc)1275 is_ctor_dtor_or_conversion (struct demangle_component *dc)
1276 {
1277 if (dc == NULL)
1278 return 0;
1279 switch (dc->type)
1280 {
1281 default:
1282 return 0;
1283 case DEMANGLE_COMPONENT_QUAL_NAME:
1284 case DEMANGLE_COMPONENT_LOCAL_NAME:
1285 return is_ctor_dtor_or_conversion (d_right (dc));
1286 case DEMANGLE_COMPONENT_CTOR:
1287 case DEMANGLE_COMPONENT_DTOR:
1288 case DEMANGLE_COMPONENT_CONVERSION:
1289 return 1;
1290 }
1291 }
1292
1293 /* <encoding> ::= <(function) name> <bare-function-type>
1294 ::= <(data) name>
1295 ::= <special-name>
1296
1297 TOP_LEVEL is non-zero when called at the top level, in which case
1298 if DMGL_PARAMS is not set we do not demangle the function
1299 parameters. We only set this at the top level, because otherwise
1300 we would not correctly demangle names in local scopes. */
1301
1302 static struct demangle_component *
d_encoding(struct d_info * di,int top_level)1303 d_encoding (struct d_info *di, int top_level)
1304 {
1305 char peek = d_peek_char (di);
1306 struct demangle_component *dc;
1307
1308 if (peek == 'G' || peek == 'T')
1309 dc = d_special_name (di);
1310 else
1311 {
1312 dc = d_name (di);
1313
1314 if (!dc)
1315 /* Failed already. */;
1316 else if (top_level && (di->options & DMGL_PARAMS) == 0)
1317 {
1318 /* Strip off any initial CV-qualifiers, as they really apply
1319 to the `this' parameter, and they were not output by the
1320 v2 demangler without DMGL_PARAMS. */
1321 while (is_fnqual_component_type (dc->type))
1322 dc = d_left (dc);
1323
1324 /* If the top level is a DEMANGLE_COMPONENT_LOCAL_NAME, then
1325 there may be function-qualifiers on its right argument which
1326 really apply here; this happens when parsing a class
1327 which is local to a function. */
1328 if (dc->type == DEMANGLE_COMPONENT_LOCAL_NAME)
1329 while (is_fnqual_component_type (d_right (dc)->type))
1330 d_right (dc) = d_left (d_right (dc));
1331 }
1332 else
1333 {
1334 peek = d_peek_char (di);
1335 if (peek != '\0' && peek != 'E')
1336 {
1337 struct demangle_component *ftype;
1338
1339 ftype = d_bare_function_type (di, has_return_type (dc));
1340 if (ftype)
1341 {
1342 /* If this is a non-top-level local-name, clear the
1343 return type, so it doesn't confuse the user by
1344 being confused with the return type of whaever
1345 this is nested within. */
1346 if (!top_level && dc->type == DEMANGLE_COMPONENT_LOCAL_NAME
1347 && ftype->type == DEMANGLE_COMPONENT_FUNCTION_TYPE)
1348 d_left (ftype) = NULL;
1349
1350 dc = d_make_comp (di, DEMANGLE_COMPONENT_TYPED_NAME,
1351 dc, ftype);
1352 }
1353 else
1354 dc = NULL;
1355 }
1356 }
1357 }
1358
1359 return dc;
1360 }
1361
1362 /* <tagged-name> ::= <name> B <source-name> */
1363
1364 static struct demangle_component *
d_abi_tags(struct d_info * di,struct demangle_component * dc)1365 d_abi_tags (struct d_info *di, struct demangle_component *dc)
1366 {
1367 struct demangle_component *hold_last_name;
1368 char peek;
1369
1370 /* Preserve the last name, so the ABI tag doesn't clobber it. */
1371 hold_last_name = di->last_name;
1372
1373 while (peek = d_peek_char (di),
1374 peek == 'B')
1375 {
1376 struct demangle_component *tag;
1377 d_advance (di, 1);
1378 tag = d_source_name (di);
1379 dc = d_make_comp (di, DEMANGLE_COMPONENT_TAGGED_NAME, dc, tag);
1380 }
1381
1382 di->last_name = hold_last_name;
1383
1384 return dc;
1385 }
1386
1387 /* <name> ::= <nested-name>
1388 ::= <unscoped-name>
1389 ::= <unscoped-template-name> <template-args>
1390 ::= <local-name>
1391
1392 <unscoped-name> ::= <unqualified-name>
1393 ::= St <unqualified-name>
1394
1395 <unscoped-template-name> ::= <unscoped-name>
1396 ::= <substitution>
1397 */
1398
1399 static struct demangle_component *
d_name(struct d_info * di)1400 d_name (struct d_info *di)
1401 {
1402 char peek = d_peek_char (di);
1403 struct demangle_component *dc;
1404
1405 switch (peek)
1406 {
1407 case 'N':
1408 return d_nested_name (di);
1409
1410 case 'Z':
1411 return d_local_name (di);
1412
1413 case 'U':
1414 return d_unqualified_name (di);
1415
1416 case 'S':
1417 {
1418 int subst;
1419
1420 if (d_peek_next_char (di) != 't')
1421 {
1422 dc = d_substitution (di, 0);
1423 subst = 1;
1424 }
1425 else
1426 {
1427 d_advance (di, 2);
1428 dc = d_make_comp (di, DEMANGLE_COMPONENT_QUAL_NAME,
1429 d_make_name (di, "std", 3),
1430 d_unqualified_name (di));
1431 di->expansion += 3;
1432 subst = 0;
1433 }
1434
1435 if (d_peek_char (di) != 'I')
1436 {
1437 /* The grammar does not permit this case to occur if we
1438 called d_substitution() above (i.e., subst == 1). We
1439 don't bother to check. */
1440 }
1441 else
1442 {
1443 /* This is <template-args>, which means that we just saw
1444 <unscoped-template-name>, which is a substitution
1445 candidate if we didn't just get it from a
1446 substitution. */
1447 if (! subst)
1448 {
1449 if (! d_add_substitution (di, dc))
1450 return NULL;
1451 }
1452 dc = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, dc,
1453 d_template_args (di));
1454 }
1455
1456 return dc;
1457 }
1458
1459 case 'L':
1460 default:
1461 dc = d_unqualified_name (di);
1462 if (d_peek_char (di) == 'I')
1463 {
1464 /* This is <template-args>, which means that we just saw
1465 <unscoped-template-name>, which is a substitution
1466 candidate. */
1467 if (! d_add_substitution (di, dc))
1468 return NULL;
1469 dc = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, dc,
1470 d_template_args (di));
1471 }
1472 return dc;
1473 }
1474 }
1475
1476 /* <nested-name> ::= N [<CV-qualifiers>] [<ref-qualifier>] <prefix> <unqualified-name> E
1477 ::= N [<CV-qualifiers>] [<ref-qualifier>] <template-prefix> <template-args> E
1478 */
1479
1480 static struct demangle_component *
d_nested_name(struct d_info * di)1481 d_nested_name (struct d_info *di)
1482 {
1483 struct demangle_component *ret;
1484 struct demangle_component **pret;
1485 struct demangle_component *rqual;
1486
1487 if (! d_check_char (di, 'N'))
1488 return NULL;
1489
1490 pret = d_cv_qualifiers (di, &ret, 1);
1491 if (pret == NULL)
1492 return NULL;
1493
1494 /* Parse the ref-qualifier now and then attach it
1495 once we have something to attach it to. */
1496 rqual = d_ref_qualifier (di, NULL);
1497
1498 *pret = d_prefix (di);
1499 if (*pret == NULL)
1500 return NULL;
1501
1502 if (rqual)
1503 {
1504 d_left (rqual) = ret;
1505 ret = rqual;
1506 }
1507
1508 if (! d_check_char (di, 'E'))
1509 return NULL;
1510
1511 return ret;
1512 }
1513
1514 /* <prefix> ::= <prefix> <unqualified-name>
1515 ::= <template-prefix> <template-args>
1516 ::= <template-param>
1517 ::= <decltype>
1518 ::=
1519 ::= <substitution>
1520
1521 <template-prefix> ::= <prefix> <(template) unqualified-name>
1522 ::= <template-param>
1523 ::= <substitution>
1524 */
1525
1526 static struct demangle_component *
d_prefix(struct d_info * di)1527 d_prefix (struct d_info *di)
1528 {
1529 struct demangle_component *ret = NULL;
1530
1531 while (1)
1532 {
1533 char peek;
1534 enum demangle_component_type comb_type;
1535 struct demangle_component *dc;
1536
1537 peek = d_peek_char (di);
1538 if (peek == '\0')
1539 return NULL;
1540
1541 /* The older code accepts a <local-name> here, but I don't see
1542 that in the grammar. The older code does not accept a
1543 <template-param> here. */
1544
1545 comb_type = DEMANGLE_COMPONENT_QUAL_NAME;
1546 if (peek == 'D')
1547 {
1548 char peek2 = d_peek_next_char (di);
1549 if (peek2 == 'T' || peek2 == 't')
1550 /* Decltype. */
1551 dc = cplus_demangle_type (di);
1552 else
1553 /* Destructor name. */
1554 dc = d_unqualified_name (di);
1555 }
1556 else if (IS_DIGIT (peek)
1557 || IS_LOWER (peek)
1558 || peek == 'C'
1559 || peek == 'U'
1560 || peek == 'L')
1561 dc = d_unqualified_name (di);
1562 else if (peek == 'S')
1563 dc = d_substitution (di, 1);
1564 else if (peek == 'I')
1565 {
1566 if (ret == NULL)
1567 return NULL;
1568 comb_type = DEMANGLE_COMPONENT_TEMPLATE;
1569 dc = d_template_args (di);
1570 }
1571 else if (peek == 'T')
1572 dc = d_template_param (di);
1573 else if (peek == 'E')
1574 return ret;
1575 else if (peek == 'M')
1576 {
1577 /* Initializer scope for a lambda. We don't need to represent
1578 this; the normal code will just treat the variable as a type
1579 scope, which gives appropriate output. */
1580 if (ret == NULL)
1581 return NULL;
1582 d_advance (di, 1);
1583 continue;
1584 }
1585 else
1586 return NULL;
1587
1588 if (ret == NULL)
1589 ret = dc;
1590 else
1591 ret = d_make_comp (di, comb_type, ret, dc);
1592
1593 if (peek != 'S' && d_peek_char (di) != 'E')
1594 {
1595 if (! d_add_substitution (di, ret))
1596 return NULL;
1597 }
1598 }
1599 }
1600
1601 /* <unqualified-name> ::= <operator-name>
1602 ::= <ctor-dtor-name>
1603 ::= <source-name>
1604 ::= <local-source-name>
1605
1606 <local-source-name> ::= L <source-name> <discriminator>
1607 */
1608
1609 static struct demangle_component *
d_unqualified_name(struct d_info * di)1610 d_unqualified_name (struct d_info *di)
1611 {
1612 struct demangle_component *ret;
1613 char peek;
1614
1615 peek = d_peek_char (di);
1616 if (IS_DIGIT (peek))
1617 ret = d_source_name (di);
1618 else if (IS_LOWER (peek))
1619 {
1620 if (peek == 'o' && d_peek_next_char (di) == 'n')
1621 d_advance (di, 2);
1622 ret = d_operator_name (di);
1623 if (ret != NULL && ret->type == DEMANGLE_COMPONENT_OPERATOR)
1624 {
1625 di->expansion += sizeof "operator" + ret->u.s_operator.op->len - 2;
1626 if (!strcmp (ret->u.s_operator.op->code, "li"))
1627 ret = d_make_comp (di, DEMANGLE_COMPONENT_UNARY, ret,
1628 d_source_name (di));
1629 }
1630 }
1631 else if (peek == 'C' || peek == 'D')
1632 ret = d_ctor_dtor_name (di);
1633 else if (peek == 'L')
1634 {
1635 d_advance (di, 1);
1636
1637 ret = d_source_name (di);
1638 if (ret == NULL)
1639 return NULL;
1640 if (! d_discriminator (di))
1641 return NULL;
1642 }
1643 else if (peek == 'U')
1644 {
1645 switch (d_peek_next_char (di))
1646 {
1647 case 'l':
1648 ret = d_lambda (di);
1649 break;
1650 case 't':
1651 ret = d_unnamed_type (di);
1652 break;
1653 default:
1654 return NULL;
1655 }
1656 }
1657 else
1658 return NULL;
1659
1660 if (d_peek_char (di) == 'B')
1661 ret = d_abi_tags (di, ret);
1662 return ret;
1663 }
1664
1665 /* <source-name> ::= <(positive length) number> <identifier> */
1666
1667 static struct demangle_component *
d_source_name(struct d_info * di)1668 d_source_name (struct d_info *di)
1669 {
1670 int len;
1671 struct demangle_component *ret;
1672
1673 len = d_number (di);
1674 if (len <= 0)
1675 return NULL;
1676 ret = d_identifier (di, len);
1677 di->last_name = ret;
1678 return ret;
1679 }
1680
1681 /* number ::= [n] <(non-negative decimal integer)> */
1682
1683 static int
d_number(struct d_info * di)1684 d_number (struct d_info *di)
1685 {
1686 int negative;
1687 char peek;
1688 int ret;
1689
1690 negative = 0;
1691 peek = d_peek_char (di);
1692 if (peek == 'n')
1693 {
1694 negative = 1;
1695 d_advance (di, 1);
1696 peek = d_peek_char (di);
1697 }
1698
1699 ret = 0;
1700 while (1)
1701 {
1702 if (! IS_DIGIT (peek))
1703 {
1704 if (negative)
1705 ret = - ret;
1706 return ret;
1707 }
1708 if (ret > ((INT_MAX - (peek - '0')) / 10))
1709 return -1;
1710 ret = ret * 10 + peek - '0';
1711 d_advance (di, 1);
1712 peek = d_peek_char (di);
1713 }
1714 }
1715
1716 /* Like d_number, but returns a demangle_component. */
1717
1718 static struct demangle_component *
d_number_component(struct d_info * di)1719 d_number_component (struct d_info *di)
1720 {
1721 struct demangle_component *ret = d_make_empty (di);
1722 if (ret)
1723 {
1724 ret->type = DEMANGLE_COMPONENT_NUMBER;
1725 ret->u.s_number.number = d_number (di);
1726 }
1727 return ret;
1728 }
1729
1730 /* identifier ::= <(unqualified source code identifier)> */
1731
1732 static struct demangle_component *
d_identifier(struct d_info * di,int len)1733 d_identifier (struct d_info *di, int len)
1734 {
1735 const char *name;
1736
1737 name = d_str (di);
1738
1739 if (di->send - name < len)
1740 return NULL;
1741
1742 d_advance (di, len);
1743
1744 /* A Java mangled name may have a trailing '$' if it is a C++
1745 keyword. This '$' is not included in the length count. We just
1746 ignore the '$'. */
1747 if ((di->options & DMGL_JAVA) != 0
1748 && d_peek_char (di) == '$')
1749 d_advance (di, 1);
1750
1751 /* Look for something which looks like a gcc encoding of an
1752 anonymous namespace, and replace it with a more user friendly
1753 name. */
1754 if (len >= (int) ANONYMOUS_NAMESPACE_PREFIX_LEN + 2
1755 && memcmp (name, ANONYMOUS_NAMESPACE_PREFIX,
1756 ANONYMOUS_NAMESPACE_PREFIX_LEN) == 0)
1757 {
1758 const char *s;
1759
1760 s = name + ANONYMOUS_NAMESPACE_PREFIX_LEN;
1761 if ((*s == '.' || *s == '_' || *s == '$')
1762 && s[1] == 'N')
1763 {
1764 di->expansion -= len - sizeof "(anonymous namespace)";
1765 return d_make_name (di, "(anonymous namespace)",
1766 sizeof "(anonymous namespace)" - 1);
1767 }
1768 }
1769
1770 return d_make_name (di, name, len);
1771 }
1772
1773 /* operator_name ::= many different two character encodings.
1774 ::= cv <type>
1775 ::= v <digit> <source-name>
1776
1777 This list is sorted for binary search. */
1778
1779 #define NL(s) s, (sizeof s) - 1
1780
1781 CP_STATIC_IF_GLIBCPP_V3
1782 const struct demangle_operator_info cplus_demangle_operators[] =
1783 {
1784 { "aN", NL ("&="), 2 },
1785 { "aS", NL ("="), 2 },
1786 { "aa", NL ("&&"), 2 },
1787 { "ad", NL ("&"), 1 },
1788 { "an", NL ("&"), 2 },
1789 { "at", NL ("alignof "), 1 },
1790 { "az", NL ("alignof "), 1 },
1791 { "cc", NL ("const_cast"), 2 },
1792 { "cl", NL ("()"), 2 },
1793 { "cm", NL (","), 2 },
1794 { "co", NL ("~"), 1 },
1795 { "dV", NL ("/="), 2 },
1796 { "da", NL ("delete[] "), 1 },
1797 { "dc", NL ("dynamic_cast"), 2 },
1798 { "de", NL ("*"), 1 },
1799 { "dl", NL ("delete "), 1 },
1800 { "ds", NL (".*"), 2 },
1801 { "dt", NL ("."), 2 },
1802 { "dv", NL ("/"), 2 },
1803 { "eO", NL ("^="), 2 },
1804 { "eo", NL ("^"), 2 },
1805 { "eq", NL ("=="), 2 },
1806 { "fL", NL ("..."), 3 },
1807 { "fR", NL ("..."), 3 },
1808 { "fl", NL ("..."), 2 },
1809 { "fr", NL ("..."), 2 },
1810 { "ge", NL (">="), 2 },
1811 { "gs", NL ("::"), 1 },
1812 { "gt", NL (">"), 2 },
1813 { "ix", NL ("[]"), 2 },
1814 { "lS", NL ("<<="), 2 },
1815 { "le", NL ("<="), 2 },
1816 { "li", NL ("operator\"\" "), 1 },
1817 { "ls", NL ("<<"), 2 },
1818 { "lt", NL ("<"), 2 },
1819 { "mI", NL ("-="), 2 },
1820 { "mL", NL ("*="), 2 },
1821 { "mi", NL ("-"), 2 },
1822 { "ml", NL ("*"), 2 },
1823 { "mm", NL ("--"), 1 },
1824 { "na", NL ("new[]"), 3 },
1825 { "ne", NL ("!="), 2 },
1826 { "ng", NL ("-"), 1 },
1827 { "nt", NL ("!"), 1 },
1828 { "nw", NL ("new"), 3 },
1829 { "oR", NL ("|="), 2 },
1830 { "oo", NL ("||"), 2 },
1831 { "or", NL ("|"), 2 },
1832 { "pL", NL ("+="), 2 },
1833 { "pl", NL ("+"), 2 },
1834 { "pm", NL ("->*"), 2 },
1835 { "pp", NL ("++"), 1 },
1836 { "ps", NL ("+"), 1 },
1837 { "pt", NL ("->"), 2 },
1838 { "qu", NL ("?"), 3 },
1839 { "rM", NL ("%="), 2 },
1840 { "rS", NL (">>="), 2 },
1841 { "rc", NL ("reinterpret_cast"), 2 },
1842 { "rm", NL ("%"), 2 },
1843 { "rs", NL (">>"), 2 },
1844 { "sP", NL ("sizeof..."), 1 },
1845 { "sZ", NL ("sizeof..."), 1 },
1846 { "sc", NL ("static_cast"), 2 },
1847 { "st", NL ("sizeof "), 1 },
1848 { "sz", NL ("sizeof "), 1 },
1849 { "tr", NL ("throw"), 0 },
1850 { "tw", NL ("throw "), 1 },
1851 { NULL, NULL, 0, 0 }
1852 };
1853
1854 static struct demangle_component *
d_operator_name(struct d_info * di)1855 d_operator_name (struct d_info *di)
1856 {
1857 char c1;
1858 char c2;
1859
1860 c1 = d_next_char (di);
1861 c2 = d_next_char (di);
1862 if (c1 == 'v' && IS_DIGIT (c2))
1863 return d_make_extended_operator (di, c2 - '0', d_source_name (di));
1864 else if (c1 == 'c' && c2 == 'v')
1865 {
1866 struct demangle_component *type;
1867 int was_conversion = di->is_conversion;
1868 struct demangle_component *res;
1869
1870 di->is_conversion = ! di->is_expression;
1871 type = cplus_demangle_type (di);
1872 if (di->is_conversion)
1873 res = d_make_comp (di, DEMANGLE_COMPONENT_CONVERSION, type, NULL);
1874 else
1875 res = d_make_comp (di, DEMANGLE_COMPONENT_CAST, type, NULL);
1876 di->is_conversion = was_conversion;
1877 return res;
1878 }
1879 else
1880 {
1881 /* LOW is the inclusive lower bound. */
1882 int low = 0;
1883 /* HIGH is the exclusive upper bound. We subtract one to ignore
1884 the sentinel at the end of the array. */
1885 int high = ((sizeof (cplus_demangle_operators)
1886 / sizeof (cplus_demangle_operators[0]))
1887 - 1);
1888
1889 while (1)
1890 {
1891 int i;
1892 const struct demangle_operator_info *p;
1893
1894 i = low + (high - low) / 2;
1895 p = cplus_demangle_operators + i;
1896
1897 if (c1 == p->code[0] && c2 == p->code[1])
1898 return d_make_operator (di, p);
1899
1900 if (c1 < p->code[0] || (c1 == p->code[0] && c2 < p->code[1]))
1901 high = i;
1902 else
1903 low = i + 1;
1904 if (low == high)
1905 return NULL;
1906 }
1907 }
1908 }
1909
1910 static struct demangle_component *
d_make_character(struct d_info * di,int c)1911 d_make_character (struct d_info *di, int c)
1912 {
1913 struct demangle_component *p;
1914 p = d_make_empty (di);
1915 if (p != NULL)
1916 {
1917 p->type = DEMANGLE_COMPONENT_CHARACTER;
1918 p->u.s_character.character = c;
1919 }
1920 return p;
1921 }
1922
1923 static struct demangle_component *
d_java_resource(struct d_info * di)1924 d_java_resource (struct d_info *di)
1925 {
1926 struct demangle_component *p = NULL;
1927 struct demangle_component *next = NULL;
1928 int len, i;
1929 char c;
1930 const char *str;
1931
1932 len = d_number (di);
1933 if (len <= 1)
1934 return NULL;
1935
1936 /* Eat the leading '_'. */
1937 if (d_next_char (di) != '_')
1938 return NULL;
1939 len--;
1940
1941 str = d_str (di);
1942 i = 0;
1943
1944 while (len > 0)
1945 {
1946 c = str[i];
1947 if (!c)
1948 return NULL;
1949
1950 /* Each chunk is either a '$' escape... */
1951 if (c == '$')
1952 {
1953 i++;
1954 switch (str[i++])
1955 {
1956 case 'S':
1957 c = '/';
1958 break;
1959 case '_':
1960 c = '.';
1961 break;
1962 case '$':
1963 c = '$';
1964 break;
1965 default:
1966 return NULL;
1967 }
1968 next = d_make_character (di, c);
1969 d_advance (di, i);
1970 str = d_str (di);
1971 len -= i;
1972 i = 0;
1973 if (next == NULL)
1974 return NULL;
1975 }
1976 /* ... or a sequence of characters. */
1977 else
1978 {
1979 while (i < len && str[i] && str[i] != '$')
1980 i++;
1981
1982 next = d_make_name (di, str, i);
1983 d_advance (di, i);
1984 str = d_str (di);
1985 len -= i;
1986 i = 0;
1987 if (next == NULL)
1988 return NULL;
1989 }
1990
1991 if (p == NULL)
1992 p = next;
1993 else
1994 {
1995 p = d_make_comp (di, DEMANGLE_COMPONENT_COMPOUND_NAME, p, next);
1996 if (p == NULL)
1997 return NULL;
1998 }
1999 }
2000
2001 p = d_make_comp (di, DEMANGLE_COMPONENT_JAVA_RESOURCE, p, NULL);
2002
2003 return p;
2004 }
2005
2006 /* <special-name> ::= TV <type>
2007 ::= TT <type>
2008 ::= TI <type>
2009 ::= TS <type>
2010 ::= GV <(object) name>
2011 ::= T <call-offset> <(base) encoding>
2012 ::= Tc <call-offset> <call-offset> <(base) encoding>
2013 Also g++ extensions:
2014 ::= TC <type> <(offset) number> _ <(base) type>
2015 ::= TF <type>
2016 ::= TJ <type>
2017 ::= GR <name>
2018 ::= GA <encoding>
2019 ::= Gr <resource name>
2020 ::= GTt <encoding>
2021 ::= GTn <encoding>
2022 */
2023
2024 static struct demangle_component *
d_special_name(struct d_info * di)2025 d_special_name (struct d_info *di)
2026 {
2027 di->expansion += 20;
2028 if (d_check_char (di, 'T'))
2029 {
2030 switch (d_next_char (di))
2031 {
2032 case 'V':
2033 di->expansion -= 5;
2034 return d_make_comp (di, DEMANGLE_COMPONENT_VTABLE,
2035 cplus_demangle_type (di), NULL);
2036 case 'T':
2037 di->expansion -= 10;
2038 return d_make_comp (di, DEMANGLE_COMPONENT_VTT,
2039 cplus_demangle_type (di), NULL);
2040 case 'I':
2041 return d_make_comp (di, DEMANGLE_COMPONENT_TYPEINFO,
2042 cplus_demangle_type (di), NULL);
2043 case 'S':
2044 return d_make_comp (di, DEMANGLE_COMPONENT_TYPEINFO_NAME,
2045 cplus_demangle_type (di), NULL);
2046
2047 case 'h':
2048 if (! d_call_offset (di, 'h'))
2049 return NULL;
2050 return d_make_comp (di, DEMANGLE_COMPONENT_THUNK,
2051 d_encoding (di, 0), NULL);
2052
2053 case 'v':
2054 if (! d_call_offset (di, 'v'))
2055 return NULL;
2056 return d_make_comp (di, DEMANGLE_COMPONENT_VIRTUAL_THUNK,
2057 d_encoding (di, 0), NULL);
2058
2059 case 'c':
2060 if (! d_call_offset (di, '\0'))
2061 return NULL;
2062 if (! d_call_offset (di, '\0'))
2063 return NULL;
2064 return d_make_comp (di, DEMANGLE_COMPONENT_COVARIANT_THUNK,
2065 d_encoding (di, 0), NULL);
2066
2067 case 'C':
2068 {
2069 struct demangle_component *derived_type;
2070 int offset;
2071 struct demangle_component *base_type;
2072
2073 derived_type = cplus_demangle_type (di);
2074 offset = d_number (di);
2075 if (offset < 0)
2076 return NULL;
2077 if (! d_check_char (di, '_'))
2078 return NULL;
2079 base_type = cplus_demangle_type (di);
2080 /* We don't display the offset. FIXME: We should display
2081 it in verbose mode. */
2082 di->expansion += 5;
2083 return d_make_comp (di, DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE,
2084 base_type, derived_type);
2085 }
2086
2087 case 'F':
2088 return d_make_comp (di, DEMANGLE_COMPONENT_TYPEINFO_FN,
2089 cplus_demangle_type (di), NULL);
2090 case 'J':
2091 return d_make_comp (di, DEMANGLE_COMPONENT_JAVA_CLASS,
2092 cplus_demangle_type (di), NULL);
2093
2094 case 'H':
2095 return d_make_comp (di, DEMANGLE_COMPONENT_TLS_INIT,
2096 d_name (di), NULL);
2097
2098 case 'W':
2099 return d_make_comp (di, DEMANGLE_COMPONENT_TLS_WRAPPER,
2100 d_name (di), NULL);
2101
2102 default:
2103 return NULL;
2104 }
2105 }
2106 else if (d_check_char (di, 'G'))
2107 {
2108 switch (d_next_char (di))
2109 {
2110 case 'V':
2111 return d_make_comp (di, DEMANGLE_COMPONENT_GUARD,
2112 d_name (di), NULL);
2113
2114 case 'R':
2115 {
2116 struct demangle_component *name = d_name (di);
2117 return d_make_comp (di, DEMANGLE_COMPONENT_REFTEMP, name,
2118 d_number_component (di));
2119 }
2120
2121 case 'A':
2122 return d_make_comp (di, DEMANGLE_COMPONENT_HIDDEN_ALIAS,
2123 d_encoding (di, 0), NULL);
2124
2125 case 'T':
2126 switch (d_next_char (di))
2127 {
2128 case 'n':
2129 return d_make_comp (di, DEMANGLE_COMPONENT_NONTRANSACTION_CLONE,
2130 d_encoding (di, 0), NULL);
2131 default:
2132 /* ??? The proposal is that other letters (such as 'h') stand
2133 for different variants of transaction cloning, such as
2134 compiling directly for hardware transaction support. But
2135 they still should all be transactional clones of some sort
2136 so go ahead and call them that. */
2137 case 't':
2138 return d_make_comp (di, DEMANGLE_COMPONENT_TRANSACTION_CLONE,
2139 d_encoding (di, 0), NULL);
2140 }
2141
2142 case 'r':
2143 return d_java_resource (di);
2144
2145 default:
2146 return NULL;
2147 }
2148 }
2149 else
2150 return NULL;
2151 }
2152
2153 /* <call-offset> ::= h <nv-offset> _
2154 ::= v <v-offset> _
2155
2156 <nv-offset> ::= <(offset) number>
2157
2158 <v-offset> ::= <(offset) number> _ <(virtual offset) number>
2159
2160 The C parameter, if not '\0', is a character we just read which is
2161 the start of the <call-offset>.
2162
2163 We don't display the offset information anywhere. FIXME: We should
2164 display it in verbose mode. */
2165
2166 static int
d_call_offset(struct d_info * di,int c)2167 d_call_offset (struct d_info *di, int c)
2168 {
2169 if (c == '\0')
2170 c = d_next_char (di);
2171
2172 if (c == 'h')
2173 d_number (di);
2174 else if (c == 'v')
2175 {
2176 d_number (di);
2177 if (! d_check_char (di, '_'))
2178 return 0;
2179 d_number (di);
2180 }
2181 else
2182 return 0;
2183
2184 if (! d_check_char (di, '_'))
2185 return 0;
2186
2187 return 1;
2188 }
2189
2190 /* <ctor-dtor-name> ::= C1
2191 ::= C2
2192 ::= C3
2193 ::= D0
2194 ::= D1
2195 ::= D2
2196 */
2197
2198 static struct demangle_component *
d_ctor_dtor_name(struct d_info * di)2199 d_ctor_dtor_name (struct d_info *di)
2200 {
2201 if (di->last_name != NULL)
2202 {
2203 if (di->last_name->type == DEMANGLE_COMPONENT_NAME)
2204 di->expansion += di->last_name->u.s_name.len;
2205 else if (di->last_name->type == DEMANGLE_COMPONENT_SUB_STD)
2206 di->expansion += di->last_name->u.s_string.len;
2207 }
2208 switch (d_peek_char (di))
2209 {
2210 case 'C':
2211 {
2212 enum gnu_v3_ctor_kinds kind;
2213 int inheriting = 0;
2214
2215 if (d_peek_next_char (di) == 'I')
2216 {
2217 inheriting = 1;
2218 d_advance (di, 1);
2219 }
2220
2221 switch (d_peek_next_char (di))
2222 {
2223 case '1':
2224 kind = gnu_v3_complete_object_ctor;
2225 break;
2226 case '2':
2227 kind = gnu_v3_base_object_ctor;
2228 break;
2229 case '3':
2230 kind = gnu_v3_complete_object_allocating_ctor;
2231 break;
2232 case '4':
2233 kind = gnu_v3_unified_ctor;
2234 break;
2235 case '5':
2236 kind = gnu_v3_object_ctor_group;
2237 break;
2238 default:
2239 return NULL;
2240 }
2241
2242 d_advance (di, 2);
2243
2244 if (inheriting)
2245 cplus_demangle_type (di);
2246
2247 return d_make_ctor (di, kind, di->last_name);
2248 }
2249
2250 case 'D':
2251 {
2252 enum gnu_v3_dtor_kinds kind;
2253
2254 switch (d_peek_next_char (di))
2255 {
2256 case '0':
2257 kind = gnu_v3_deleting_dtor;
2258 break;
2259 case '1':
2260 kind = gnu_v3_complete_object_dtor;
2261 break;
2262 case '2':
2263 kind = gnu_v3_base_object_dtor;
2264 break;
2265 /* digit '3' is not used */
2266 case '4':
2267 kind = gnu_v3_unified_dtor;
2268 break;
2269 case '5':
2270 kind = gnu_v3_object_dtor_group;
2271 break;
2272 default:
2273 return NULL;
2274 }
2275 d_advance (di, 2);
2276 return d_make_dtor (di, kind, di->last_name);
2277 }
2278
2279 default:
2280 return NULL;
2281 }
2282 }
2283
2284 /* True iff we're looking at an order-insensitive type-qualifier, including
2285 function-type-qualifiers. */
2286
2287 static int
next_is_type_qual(struct d_info * di)2288 next_is_type_qual (struct d_info *di)
2289 {
2290 char peek = d_peek_char (di);
2291 if (peek == 'r' || peek == 'V' || peek == 'K')
2292 return 1;
2293 if (peek == 'D')
2294 {
2295 peek = d_peek_next_char (di);
2296 if (peek == 'x' || peek == 'o' || peek == 'O' || peek == 'w')
2297 return 1;
2298 }
2299 return 0;
2300 }
2301
2302 /* <type> ::= <builtin-type>
2303 ::= <function-type>
2304 ::= <class-enum-type>
2305 ::= <array-type>
2306 ::= <pointer-to-member-type>
2307 ::= <template-param>
2308 ::= <template-template-param> <template-args>
2309 ::= <substitution>
2310 ::= <CV-qualifiers> <type>
2311 ::= P <type>
2312 ::= R <type>
2313 ::= O <type> (C++0x)
2314 ::= C <type>
2315 ::= G <type>
2316 ::= U <source-name> <type>
2317
2318 <builtin-type> ::= various one letter codes
2319 ::= u <source-name>
2320 */
2321
2322 CP_STATIC_IF_GLIBCPP_V3
2323 const struct demangle_builtin_type_info
2324 cplus_demangle_builtin_types[D_BUILTIN_TYPE_COUNT] =
2325 {
2326 /* a */ { NL ("signed char"), NL ("signed char"), D_PRINT_DEFAULT },
2327 /* b */ { NL ("bool"), NL ("boolean"), D_PRINT_BOOL },
2328 /* c */ { NL ("char"), NL ("byte"), D_PRINT_DEFAULT },
2329 /* d */ { NL ("double"), NL ("double"), D_PRINT_FLOAT },
2330 /* e */ { NL ("long double"), NL ("long double"), D_PRINT_FLOAT },
2331 /* f */ { NL ("float"), NL ("float"), D_PRINT_FLOAT },
2332 /* g */ { NL ("__float128"), NL ("__float128"), D_PRINT_FLOAT },
2333 /* h */ { NL ("unsigned char"), NL ("unsigned char"), D_PRINT_DEFAULT },
2334 /* i */ { NL ("int"), NL ("int"), D_PRINT_INT },
2335 /* j */ { NL ("unsigned int"), NL ("unsigned"), D_PRINT_UNSIGNED },
2336 /* k */ { NULL, 0, NULL, 0, D_PRINT_DEFAULT },
2337 /* l */ { NL ("long"), NL ("long"), D_PRINT_LONG },
2338 /* m */ { NL ("unsigned long"), NL ("unsigned long"), D_PRINT_UNSIGNED_LONG },
2339 /* n */ { NL ("__int128"), NL ("__int128"), D_PRINT_DEFAULT },
2340 /* o */ { NL ("unsigned __int128"), NL ("unsigned __int128"),
2341 D_PRINT_DEFAULT },
2342 /* p */ { NULL, 0, NULL, 0, D_PRINT_DEFAULT },
2343 /* q */ { NULL, 0, NULL, 0, D_PRINT_DEFAULT },
2344 /* r */ { NULL, 0, NULL, 0, D_PRINT_DEFAULT },
2345 /* s */ { NL ("short"), NL ("short"), D_PRINT_DEFAULT },
2346 /* t */ { NL ("unsigned short"), NL ("unsigned short"), D_PRINT_DEFAULT },
2347 /* u */ { NULL, 0, NULL, 0, D_PRINT_DEFAULT },
2348 /* v */ { NL ("void"), NL ("void"), D_PRINT_VOID },
2349 /* w */ { NL ("wchar_t"), NL ("char"), D_PRINT_DEFAULT },
2350 /* x */ { NL ("long long"), NL ("long"), D_PRINT_LONG_LONG },
2351 /* y */ { NL ("unsigned long long"), NL ("unsigned long long"),
2352 D_PRINT_UNSIGNED_LONG_LONG },
2353 /* z */ { NL ("..."), NL ("..."), D_PRINT_DEFAULT },
2354 /* 26 */ { NL ("decimal32"), NL ("decimal32"), D_PRINT_DEFAULT },
2355 /* 27 */ { NL ("decimal64"), NL ("decimal64"), D_PRINT_DEFAULT },
2356 /* 28 */ { NL ("decimal128"), NL ("decimal128"), D_PRINT_DEFAULT },
2357 /* 29 */ { NL ("half"), NL ("half"), D_PRINT_FLOAT },
2358 /* 30 */ { NL ("char16_t"), NL ("char16_t"), D_PRINT_DEFAULT },
2359 /* 31 */ { NL ("char32_t"), NL ("char32_t"), D_PRINT_DEFAULT },
2360 /* 32 */ { NL ("decltype(nullptr)"), NL ("decltype(nullptr)"),
2361 D_PRINT_DEFAULT },
2362 };
2363
2364 CP_STATIC_IF_GLIBCPP_V3
2365 struct demangle_component *
cplus_demangle_type(struct d_info * di)2366 cplus_demangle_type (struct d_info *di)
2367 {
2368 char peek;
2369 struct demangle_component *ret;
2370 int can_subst;
2371
2372 /* The ABI specifies that when CV-qualifiers are used, the base type
2373 is substitutable, and the fully qualified type is substitutable,
2374 but the base type with a strict subset of the CV-qualifiers is
2375 not substitutable. The natural recursive implementation of the
2376 CV-qualifiers would cause subsets to be substitutable, so instead
2377 we pull them all off now.
2378
2379 FIXME: The ABI says that order-insensitive vendor qualifiers
2380 should be handled in the same way, but we have no way to tell
2381 which vendor qualifiers are order-insensitive and which are
2382 order-sensitive. So we just assume that they are all
2383 order-sensitive. g++ 3.4 supports only one vendor qualifier,
2384 __vector, and it treats it as order-sensitive when mangling
2385 names. */
2386
2387 if (next_is_type_qual (di))
2388 {
2389 struct demangle_component **pret;
2390
2391 pret = d_cv_qualifiers (di, &ret, 0);
2392 if (pret == NULL)
2393 return NULL;
2394 if (d_peek_char (di) == 'F')
2395 {
2396 /* cv-qualifiers before a function type apply to 'this',
2397 so avoid adding the unqualified function type to
2398 the substitution list. */
2399 *pret = d_function_type (di);
2400 }
2401 else
2402 *pret = cplus_demangle_type (di);
2403 if (!*pret)
2404 return NULL;
2405 if ((*pret)->type == DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS
2406 || (*pret)->type == DEMANGLE_COMPONENT_REFERENCE_THIS)
2407 {
2408 /* Move the ref-qualifier outside the cv-qualifiers so that
2409 they are printed in the right order. */
2410 struct demangle_component *fn = d_left (*pret);
2411 d_left (*pret) = ret;
2412 ret = *pret;
2413 *pret = fn;
2414 }
2415 if (! d_add_substitution (di, ret))
2416 return NULL;
2417 return ret;
2418 }
2419
2420 can_subst = 1;
2421
2422 peek = d_peek_char (di);
2423 switch (peek)
2424 {
2425 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': case 'g':
2426 case 'h': case 'i': case 'j': case 'l': case 'm': case 'n':
2427 case 'o': case 's': case 't':
2428 case 'v': case 'w': case 'x': case 'y': case 'z':
2429 ret = d_make_builtin_type (di,
2430 &cplus_demangle_builtin_types[peek - 'a']);
2431 di->expansion += ret->u.s_builtin.type->len;
2432 can_subst = 0;
2433 d_advance (di, 1);
2434 break;
2435
2436 case 'u':
2437 d_advance (di, 1);
2438 ret = d_make_comp (di, DEMANGLE_COMPONENT_VENDOR_TYPE,
2439 d_source_name (di), NULL);
2440 break;
2441
2442 case 'F':
2443 ret = d_function_type (di);
2444 break;
2445
2446 case '0': case '1': case '2': case '3': case '4':
2447 case '5': case '6': case '7': case '8': case '9':
2448 case 'N':
2449 case 'Z':
2450 ret = d_class_enum_type (di);
2451 break;
2452
2453 case 'A':
2454 ret = d_array_type (di);
2455 break;
2456
2457 case 'M':
2458 ret = d_pointer_to_member_type (di);
2459 break;
2460
2461 case 'T':
2462 ret = d_template_param (di);
2463 if (d_peek_char (di) == 'I')
2464 {
2465 /* This may be <template-template-param> <template-args>.
2466 If this is the type for a conversion operator, we can
2467 have a <template-template-param> here only by following
2468 a derivation like this:
2469
2470 <nested-name>
2471 -> <template-prefix> <template-args>
2472 -> <prefix> <template-unqualified-name> <template-args>
2473 -> <unqualified-name> <template-unqualified-name> <template-args>
2474 -> <source-name> <template-unqualified-name> <template-args>
2475 -> <source-name> <operator-name> <template-args>
2476 -> <source-name> cv <type> <template-args>
2477 -> <source-name> cv <template-template-param> <template-args> <template-args>
2478
2479 where the <template-args> is followed by another.
2480 Otherwise, we must have a derivation like this:
2481
2482 <nested-name>
2483 -> <template-prefix> <template-args>
2484 -> <prefix> <template-unqualified-name> <template-args>
2485 -> <unqualified-name> <template-unqualified-name> <template-args>
2486 -> <source-name> <template-unqualified-name> <template-args>
2487 -> <source-name> <operator-name> <template-args>
2488 -> <source-name> cv <type> <template-args>
2489 -> <source-name> cv <template-param> <template-args>
2490
2491 where we need to leave the <template-args> to be processed
2492 by d_prefix (following the <template-prefix>).
2493
2494 The <template-template-param> part is a substitution
2495 candidate. */
2496 if (! di->is_conversion)
2497 {
2498 if (! d_add_substitution (di, ret))
2499 return NULL;
2500 ret = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, ret,
2501 d_template_args (di));
2502 }
2503 else
2504 {
2505 struct demangle_component *args;
2506 struct d_info_checkpoint checkpoint;
2507
2508 d_checkpoint (di, &checkpoint);
2509 args = d_template_args (di);
2510 if (d_peek_char (di) == 'I')
2511 {
2512 if (! d_add_substitution (di, ret))
2513 return NULL;
2514 ret = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, ret,
2515 args);
2516 }
2517 else
2518 d_backtrack (di, &checkpoint);
2519 }
2520 }
2521 break;
2522
2523 case 'S':
2524 /* If this is a special substitution, then it is the start of
2525 <class-enum-type>. */
2526 {
2527 char peek_next;
2528
2529 peek_next = d_peek_next_char (di);
2530 if (IS_DIGIT (peek_next)
2531 || peek_next == '_'
2532 || IS_UPPER (peek_next))
2533 {
2534 ret = d_substitution (di, 0);
2535 /* The substituted name may have been a template name and
2536 may be followed by tepmlate args. */
2537 if (d_peek_char (di) == 'I')
2538 ret = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, ret,
2539 d_template_args (di));
2540 else
2541 can_subst = 0;
2542 }
2543 else
2544 {
2545 ret = d_class_enum_type (di);
2546 /* If the substitution was a complete type, then it is not
2547 a new substitution candidate. However, if the
2548 substitution was followed by template arguments, then
2549 the whole thing is a substitution candidate. */
2550 if (ret != NULL && ret->type == DEMANGLE_COMPONENT_SUB_STD)
2551 can_subst = 0;
2552 }
2553 }
2554 break;
2555
2556 case 'O':
2557 d_advance (di, 1);
2558 ret = d_make_comp (di, DEMANGLE_COMPONENT_RVALUE_REFERENCE,
2559 cplus_demangle_type (di), NULL);
2560 break;
2561
2562 case 'P':
2563 d_advance (di, 1);
2564 ret = d_make_comp (di, DEMANGLE_COMPONENT_POINTER,
2565 cplus_demangle_type (di), NULL);
2566 break;
2567
2568 case 'R':
2569 d_advance (di, 1);
2570 ret = d_make_comp (di, DEMANGLE_COMPONENT_REFERENCE,
2571 cplus_demangle_type (di), NULL);
2572 break;
2573
2574 case 'C':
2575 d_advance (di, 1);
2576 ret = d_make_comp (di, DEMANGLE_COMPONENT_COMPLEX,
2577 cplus_demangle_type (di), NULL);
2578 break;
2579
2580 case 'G':
2581 d_advance (di, 1);
2582 ret = d_make_comp (di, DEMANGLE_COMPONENT_IMAGINARY,
2583 cplus_demangle_type (di), NULL);
2584 break;
2585
2586 case 'U':
2587 d_advance (di, 1);
2588 ret = d_source_name (di);
2589 if (d_peek_char (di) == 'I')
2590 ret = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, ret,
2591 d_template_args (di));
2592 ret = d_make_comp (di, DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL,
2593 cplus_demangle_type (di), ret);
2594 break;
2595
2596 case 'D':
2597 can_subst = 0;
2598 d_advance (di, 1);
2599 peek = d_next_char (di);
2600 switch (peek)
2601 {
2602 case 'T':
2603 case 't':
2604 /* decltype (expression) */
2605 ret = d_make_comp (di, DEMANGLE_COMPONENT_DECLTYPE,
2606 d_expression (di), NULL);
2607 if (ret && d_next_char (di) != 'E')
2608 ret = NULL;
2609 can_subst = 1;
2610 break;
2611
2612 case 'p':
2613 /* Pack expansion. */
2614 ret = d_make_comp (di, DEMANGLE_COMPONENT_PACK_EXPANSION,
2615 cplus_demangle_type (di), NULL);
2616 can_subst = 1;
2617 break;
2618
2619 case 'a':
2620 /* auto */
2621 ret = d_make_name (di, "auto", 4);
2622 break;
2623 case 'c':
2624 /* decltype(auto) */
2625 ret = d_make_name (di, "decltype(auto)", 14);
2626 break;
2627
2628 case 'f':
2629 /* 32-bit decimal floating point */
2630 ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[26]);
2631 di->expansion += ret->u.s_builtin.type->len;
2632 break;
2633 case 'd':
2634 /* 64-bit DFP */
2635 ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[27]);
2636 di->expansion += ret->u.s_builtin.type->len;
2637 break;
2638 case 'e':
2639 /* 128-bit DFP */
2640 ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[28]);
2641 di->expansion += ret->u.s_builtin.type->len;
2642 break;
2643 case 'h':
2644 /* 16-bit half-precision FP */
2645 ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[29]);
2646 di->expansion += ret->u.s_builtin.type->len;
2647 break;
2648 case 's':
2649 /* char16_t */
2650 ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[30]);
2651 di->expansion += ret->u.s_builtin.type->len;
2652 break;
2653 case 'i':
2654 /* char32_t */
2655 ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[31]);
2656 di->expansion += ret->u.s_builtin.type->len;
2657 break;
2658
2659 case 'F':
2660 /* Fixed point types. DF<int bits><length><fract bits><sat> */
2661 ret = d_make_empty (di);
2662 ret->type = DEMANGLE_COMPONENT_FIXED_TYPE;
2663 if ((ret->u.s_fixed.accum = IS_DIGIT (d_peek_char (di))))
2664 /* For demangling we don't care about the bits. */
2665 d_number (di);
2666 ret->u.s_fixed.length = cplus_demangle_type (di);
2667 if (ret->u.s_fixed.length == NULL)
2668 return NULL;
2669 d_number (di);
2670 peek = d_next_char (di);
2671 ret->u.s_fixed.sat = (peek == 's');
2672 break;
2673
2674 case 'v':
2675 ret = d_vector_type (di);
2676 can_subst = 1;
2677 break;
2678
2679 case 'n':
2680 /* decltype(nullptr) */
2681 ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[32]);
2682 di->expansion += ret->u.s_builtin.type->len;
2683 break;
2684
2685 default:
2686 return NULL;
2687 }
2688 break;
2689
2690 default:
2691 return NULL;
2692 }
2693
2694 if (can_subst)
2695 {
2696 if (! d_add_substitution (di, ret))
2697 return NULL;
2698 }
2699
2700 return ret;
2701 }
2702
2703 /* <CV-qualifiers> ::= [r] [V] [K] [Dx] */
2704
2705 static struct demangle_component **
d_cv_qualifiers(struct d_info * di,struct demangle_component ** pret,int member_fn)2706 d_cv_qualifiers (struct d_info *di,
2707 struct demangle_component **pret, int member_fn)
2708 {
2709 struct demangle_component **pstart;
2710 char peek;
2711
2712 pstart = pret;
2713 peek = d_peek_char (di);
2714 while (next_is_type_qual (di))
2715 {
2716 enum demangle_component_type t;
2717 struct demangle_component *right = NULL;
2718
2719 d_advance (di, 1);
2720 if (peek == 'r')
2721 {
2722 t = (member_fn
2723 ? DEMANGLE_COMPONENT_RESTRICT_THIS
2724 : DEMANGLE_COMPONENT_RESTRICT);
2725 di->expansion += sizeof "restrict";
2726 }
2727 else if (peek == 'V')
2728 {
2729 t = (member_fn
2730 ? DEMANGLE_COMPONENT_VOLATILE_THIS
2731 : DEMANGLE_COMPONENT_VOLATILE);
2732 di->expansion += sizeof "volatile";
2733 }
2734 else if (peek == 'K')
2735 {
2736 t = (member_fn
2737 ? DEMANGLE_COMPONENT_CONST_THIS
2738 : DEMANGLE_COMPONENT_CONST);
2739 di->expansion += sizeof "const";
2740 }
2741 else
2742 {
2743 peek = d_next_char (di);
2744 if (peek == 'x')
2745 {
2746 t = DEMANGLE_COMPONENT_TRANSACTION_SAFE;
2747 di->expansion += sizeof "transaction_safe";
2748 }
2749 else if (peek == 'o'
2750 || peek == 'O')
2751 {
2752 t = DEMANGLE_COMPONENT_NOEXCEPT;
2753 di->expansion += sizeof "noexcept";
2754 if (peek == 'O')
2755 {
2756 right = d_expression (di);
2757 if (right == NULL)
2758 return NULL;
2759 if (! d_check_char (di, 'E'))
2760 return NULL;
2761 }
2762 }
2763 else if (peek == 'w')
2764 {
2765 t = DEMANGLE_COMPONENT_THROW_SPEC;
2766 di->expansion += sizeof "throw";
2767 right = d_parmlist (di);
2768 if (right == NULL)
2769 return NULL;
2770 if (! d_check_char (di, 'E'))
2771 return NULL;
2772 }
2773 else
2774 return NULL;
2775 }
2776
2777 *pret = d_make_comp (di, t, NULL, right);
2778 if (*pret == NULL)
2779 return NULL;
2780 pret = &d_left (*pret);
2781
2782 peek = d_peek_char (di);
2783 }
2784
2785 if (!member_fn && peek == 'F')
2786 {
2787 while (pstart != pret)
2788 {
2789 switch ((*pstart)->type)
2790 {
2791 case DEMANGLE_COMPONENT_RESTRICT:
2792 (*pstart)->type = DEMANGLE_COMPONENT_RESTRICT_THIS;
2793 break;
2794 case DEMANGLE_COMPONENT_VOLATILE:
2795 (*pstart)->type = DEMANGLE_COMPONENT_VOLATILE_THIS;
2796 break;
2797 case DEMANGLE_COMPONENT_CONST:
2798 (*pstart)->type = DEMANGLE_COMPONENT_CONST_THIS;
2799 break;
2800 default:
2801 break;
2802 }
2803 pstart = &d_left (*pstart);
2804 }
2805 }
2806
2807 return pret;
2808 }
2809
2810 /* <ref-qualifier> ::= R
2811 ::= O */
2812
2813 static struct demangle_component *
d_ref_qualifier(struct d_info * di,struct demangle_component * sub)2814 d_ref_qualifier (struct d_info *di, struct demangle_component *sub)
2815 {
2816 struct demangle_component *ret = sub;
2817 char peek;
2818
2819 peek = d_peek_char (di);
2820 if (peek == 'R' || peek == 'O')
2821 {
2822 enum demangle_component_type t;
2823 if (peek == 'R')
2824 {
2825 t = DEMANGLE_COMPONENT_REFERENCE_THIS;
2826 di->expansion += sizeof "&";
2827 }
2828 else
2829 {
2830 t = DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS;
2831 di->expansion += sizeof "&&";
2832 }
2833 d_advance (di, 1);
2834
2835 ret = d_make_comp (di, t, ret, NULL);
2836 }
2837
2838 return ret;
2839 }
2840
2841 /* <function-type> ::= F [Y] <bare-function-type> [<ref-qualifier>] [T] E */
2842
2843 static struct demangle_component *
d_function_type(struct d_info * di)2844 d_function_type (struct d_info *di)
2845 {
2846 struct demangle_component *ret;
2847
2848 if (! d_check_char (di, 'F'))
2849 return NULL;
2850 if (d_peek_char (di) == 'Y')
2851 {
2852 /* Function has C linkage. We don't print this information.
2853 FIXME: We should print it in verbose mode. */
2854 d_advance (di, 1);
2855 }
2856 ret = d_bare_function_type (di, 1);
2857 ret = d_ref_qualifier (di, ret);
2858
2859 if (! d_check_char (di, 'E'))
2860 return NULL;
2861 return ret;
2862 }
2863
2864 /* <type>+ */
2865
2866 static struct demangle_component *
d_parmlist(struct d_info * di)2867 d_parmlist (struct d_info *di)
2868 {
2869 struct demangle_component *tl;
2870 struct demangle_component **ptl;
2871
2872 tl = NULL;
2873 ptl = &tl;
2874 while (1)
2875 {
2876 struct demangle_component *type;
2877
2878 char peek = d_peek_char (di);
2879 if (peek == '\0' || peek == 'E' || peek == '.')
2880 break;
2881 if ((peek == 'R' || peek == 'O')
2882 && d_peek_next_char (di) == 'E')
2883 /* Function ref-qualifier, not a ref prefix for a parameter type. */
2884 break;
2885 type = cplus_demangle_type (di);
2886 if (type == NULL)
2887 return NULL;
2888 *ptl = d_make_comp (di, DEMANGLE_COMPONENT_ARGLIST, type, NULL);
2889 if (*ptl == NULL)
2890 return NULL;
2891 ptl = &d_right (*ptl);
2892 }
2893
2894 /* There should be at least one parameter type besides the optional
2895 return type. A function which takes no arguments will have a
2896 single parameter type void. */
2897 if (tl == NULL)
2898 return NULL;
2899
2900 /* If we have a single parameter type void, omit it. */
2901 if (d_right (tl) == NULL
2902 && d_left (tl)->type == DEMANGLE_COMPONENT_BUILTIN_TYPE
2903 && d_left (tl)->u.s_builtin.type->print == D_PRINT_VOID)
2904 {
2905 di->expansion -= d_left (tl)->u.s_builtin.type->len;
2906 d_left (tl) = NULL;
2907 }
2908
2909 return tl;
2910 }
2911
2912 /* <bare-function-type> ::= [J]<type>+ */
2913
2914 static struct demangle_component *
d_bare_function_type(struct d_info * di,int has_return_type)2915 d_bare_function_type (struct d_info *di, int has_return_type)
2916 {
2917 struct demangle_component *return_type;
2918 struct demangle_component *tl;
2919 char peek;
2920
2921 /* Detect special qualifier indicating that the first argument
2922 is the return type. */
2923 peek = d_peek_char (di);
2924 if (peek == 'J')
2925 {
2926 d_advance (di, 1);
2927 has_return_type = 1;
2928 }
2929
2930 if (has_return_type)
2931 {
2932 return_type = cplus_demangle_type (di);
2933 if (return_type == NULL)
2934 return NULL;
2935 }
2936 else
2937 return_type = NULL;
2938
2939 tl = d_parmlist (di);
2940 if (tl == NULL)
2941 return NULL;
2942
2943 return d_make_comp (di, DEMANGLE_COMPONENT_FUNCTION_TYPE,
2944 return_type, tl);
2945 }
2946
2947 /* <class-enum-type> ::= <name> */
2948
2949 static struct demangle_component *
d_class_enum_type(struct d_info * di)2950 d_class_enum_type (struct d_info *di)
2951 {
2952 return d_name (di);
2953 }
2954
2955 /* <array-type> ::= A <(positive dimension) number> _ <(element) type>
2956 ::= A [<(dimension) expression>] _ <(element) type>
2957 */
2958
2959 static struct demangle_component *
d_array_type(struct d_info * di)2960 d_array_type (struct d_info *di)
2961 {
2962 char peek;
2963 struct demangle_component *dim;
2964
2965 if (! d_check_char (di, 'A'))
2966 return NULL;
2967
2968 peek = d_peek_char (di);
2969 if (peek == '_')
2970 dim = NULL;
2971 else if (IS_DIGIT (peek))
2972 {
2973 const char *s;
2974
2975 s = d_str (di);
2976 do
2977 {
2978 d_advance (di, 1);
2979 peek = d_peek_char (di);
2980 }
2981 while (IS_DIGIT (peek));
2982 dim = d_make_name (di, s, d_str (di) - s);
2983 if (dim == NULL)
2984 return NULL;
2985 }
2986 else
2987 {
2988 dim = d_expression (di);
2989 if (dim == NULL)
2990 return NULL;
2991 }
2992
2993 if (! d_check_char (di, '_'))
2994 return NULL;
2995
2996 return d_make_comp (di, DEMANGLE_COMPONENT_ARRAY_TYPE, dim,
2997 cplus_demangle_type (di));
2998 }
2999
3000 /* <vector-type> ::= Dv <number> _ <type>
3001 ::= Dv _ <expression> _ <type> */
3002
3003 static struct demangle_component *
d_vector_type(struct d_info * di)3004 d_vector_type (struct d_info *di)
3005 {
3006 char peek;
3007 struct demangle_component *dim;
3008
3009 peek = d_peek_char (di);
3010 if (peek == '_')
3011 {
3012 d_advance (di, 1);
3013 dim = d_expression (di);
3014 }
3015 else
3016 dim = d_number_component (di);
3017
3018 if (dim == NULL)
3019 return NULL;
3020
3021 if (! d_check_char (di, '_'))
3022 return NULL;
3023
3024 return d_make_comp (di, DEMANGLE_COMPONENT_VECTOR_TYPE, dim,
3025 cplus_demangle_type (di));
3026 }
3027
3028 /* <pointer-to-member-type> ::= M <(class) type> <(member) type> */
3029
3030 static struct demangle_component *
d_pointer_to_member_type(struct d_info * di)3031 d_pointer_to_member_type (struct d_info *di)
3032 {
3033 struct demangle_component *cl;
3034 struct demangle_component *mem;
3035
3036 if (! d_check_char (di, 'M'))
3037 return NULL;
3038
3039 cl = cplus_demangle_type (di);
3040 if (cl == NULL)
3041 return NULL;
3042
3043 /* The ABI says, "The type of a non-static member function is considered
3044 to be different, for the purposes of substitution, from the type of a
3045 namespace-scope or static member function whose type appears
3046 similar. The types of two non-static member functions are considered
3047 to be different, for the purposes of substitution, if the functions
3048 are members of different classes. In other words, for the purposes of
3049 substitution, the class of which the function is a member is
3050 considered part of the type of function."
3051
3052 For a pointer to member function, this call to cplus_demangle_type
3053 will end up adding a (possibly qualified) non-member function type to
3054 the substitution table, which is not correct; however, the member
3055 function type will never be used in a substitution, so putting the
3056 wrong type in the substitution table is harmless. */
3057
3058 mem = cplus_demangle_type (di);
3059 if (mem == NULL)
3060 return NULL;
3061
3062 return d_make_comp (di, DEMANGLE_COMPONENT_PTRMEM_TYPE, cl, mem);
3063 }
3064
3065 /* <non-negative number> _ */
3066
3067 static int
d_compact_number(struct d_info * di)3068 d_compact_number (struct d_info *di)
3069 {
3070 int num;
3071 if (d_peek_char (di) == '_')
3072 num = 0;
3073 else if (d_peek_char (di) == 'n')
3074 return -1;
3075 else
3076 num = d_number (di) + 1;
3077
3078 if (num < 0 || ! d_check_char (di, '_'))
3079 return -1;
3080 return num;
3081 }
3082
3083 /* <template-param> ::= T_
3084 ::= T <(parameter-2 non-negative) number> _
3085 */
3086
3087 static struct demangle_component *
d_template_param(struct d_info * di)3088 d_template_param (struct d_info *di)
3089 {
3090 int param;
3091
3092 if (! d_check_char (di, 'T'))
3093 return NULL;
3094
3095 param = d_compact_number (di);
3096 if (param < 0)
3097 return NULL;
3098
3099 return d_make_template_param (di, param);
3100 }
3101
3102 /* <template-args> ::= I <template-arg>+ E */
3103
3104 static struct demangle_component *
d_template_args(struct d_info * di)3105 d_template_args (struct d_info *di)
3106 {
3107 if (d_peek_char (di) != 'I'
3108 && d_peek_char (di) != 'J')
3109 return NULL;
3110 d_advance (di, 1);
3111
3112 return d_template_args_1 (di);
3113 }
3114
3115 /* <template-arg>* E */
3116
3117 static struct demangle_component *
d_template_args_1(struct d_info * di)3118 d_template_args_1 (struct d_info *di)
3119 {
3120 struct demangle_component *hold_last_name;
3121 struct demangle_component *al;
3122 struct demangle_component **pal;
3123
3124 /* Preserve the last name we saw--don't let the template arguments
3125 clobber it, as that would give us the wrong name for a subsequent
3126 constructor or destructor. */
3127 hold_last_name = di->last_name;
3128
3129 if (d_peek_char (di) == 'E')
3130 {
3131 /* An argument pack can be empty. */
3132 d_advance (di, 1);
3133 return d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE_ARGLIST, NULL, NULL);
3134 }
3135
3136 al = NULL;
3137 pal = &al;
3138 while (1)
3139 {
3140 struct demangle_component *a;
3141
3142 a = d_template_arg (di);
3143 if (a == NULL)
3144 return NULL;
3145
3146 *pal = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE_ARGLIST, a, NULL);
3147 if (*pal == NULL)
3148 return NULL;
3149 pal = &d_right (*pal);
3150
3151 if (d_peek_char (di) == 'E')
3152 {
3153 d_advance (di, 1);
3154 break;
3155 }
3156 }
3157
3158 di->last_name = hold_last_name;
3159
3160 return al;
3161 }
3162
3163 /* <template-arg> ::= <type>
3164 ::= X <expression> E
3165 ::= <expr-primary>
3166 */
3167
3168 static struct demangle_component *
d_template_arg(struct d_info * di)3169 d_template_arg (struct d_info *di)
3170 {
3171 struct demangle_component *ret;
3172
3173 switch (d_peek_char (di))
3174 {
3175 case 'X':
3176 d_advance (di, 1);
3177 ret = d_expression (di);
3178 if (! d_check_char (di, 'E'))
3179 return NULL;
3180 return ret;
3181
3182 case 'L':
3183 return d_expr_primary (di);
3184
3185 case 'I':
3186 case 'J':
3187 /* An argument pack. */
3188 return d_template_args (di);
3189
3190 default:
3191 return cplus_demangle_type (di);
3192 }
3193 }
3194
3195 /* Parse a sequence of expressions until we hit the terminator
3196 character. */
3197
3198 static struct demangle_component *
d_exprlist(struct d_info * di,char terminator)3199 d_exprlist (struct d_info *di, char terminator)
3200 {
3201 struct demangle_component *list = NULL;
3202 struct demangle_component **p = &list;
3203
3204 if (d_peek_char (di) == terminator)
3205 {
3206 d_advance (di, 1);
3207 return d_make_comp (di, DEMANGLE_COMPONENT_ARGLIST, NULL, NULL);
3208 }
3209
3210 while (1)
3211 {
3212 struct demangle_component *arg = d_expression (di);
3213 if (arg == NULL)
3214 return NULL;
3215
3216 *p = d_make_comp (di, DEMANGLE_COMPONENT_ARGLIST, arg, NULL);
3217 if (*p == NULL)
3218 return NULL;
3219 p = &d_right (*p);
3220
3221 if (d_peek_char (di) == terminator)
3222 {
3223 d_advance (di, 1);
3224 break;
3225 }
3226 }
3227
3228 return list;
3229 }
3230
3231 /* Returns nonzero iff OP is an operator for a C++ cast: const_cast,
3232 dynamic_cast, static_cast or reinterpret_cast. */
3233
3234 static int
op_is_new_cast(struct demangle_component * op)3235 op_is_new_cast (struct demangle_component *op)
3236 {
3237 const char *code = op->u.s_operator.op->code;
3238 return (code[1] == 'c'
3239 && (code[0] == 's' || code[0] == 'd'
3240 || code[0] == 'c' || code[0] == 'r'));
3241 }
3242
3243 /* <expression> ::= <(unary) operator-name> <expression>
3244 ::= <(binary) operator-name> <expression> <expression>
3245 ::= <(trinary) operator-name> <expression> <expression> <expression>
3246 ::= cl <expression>+ E
3247 ::= st <type>
3248 ::= <template-param>
3249 ::= sr <type> <unqualified-name>
3250 ::= sr <type> <unqualified-name> <template-args>
3251 ::= <expr-primary>
3252 */
3253
3254 static inline struct demangle_component *
d_expression_1(struct d_info * di)3255 d_expression_1 (struct d_info *di)
3256 {
3257 char peek;
3258
3259 peek = d_peek_char (di);
3260 if (peek == 'L')
3261 return d_expr_primary (di);
3262 else if (peek == 'T')
3263 return d_template_param (di);
3264 else if (peek == 's' && d_peek_next_char (di) == 'r')
3265 {
3266 struct demangle_component *type;
3267 struct demangle_component *name;
3268
3269 d_advance (di, 2);
3270 type = cplus_demangle_type (di);
3271 name = d_unqualified_name (di);
3272 if (d_peek_char (di) != 'I')
3273 return d_make_comp (di, DEMANGLE_COMPONENT_QUAL_NAME, type, name);
3274 else
3275 return d_make_comp (di, DEMANGLE_COMPONENT_QUAL_NAME, type,
3276 d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, name,
3277 d_template_args (di)));
3278 }
3279 else if (peek == 's' && d_peek_next_char (di) == 'p')
3280 {
3281 d_advance (di, 2);
3282 return d_make_comp (di, DEMANGLE_COMPONENT_PACK_EXPANSION,
3283 d_expression_1 (di), NULL);
3284 }
3285 else if (peek == 'f' && d_peek_next_char (di) == 'p')
3286 {
3287 /* Function parameter used in a late-specified return type. */
3288 int index;
3289 d_advance (di, 2);
3290 if (d_peek_char (di) == 'T')
3291 {
3292 /* 'this' parameter. */
3293 d_advance (di, 1);
3294 index = 0;
3295 }
3296 else
3297 {
3298 index = d_compact_number (di);
3299 if (index == INT_MAX || index == -1)
3300 return NULL;
3301 index++;
3302 }
3303 return d_make_function_param (di, index);
3304 }
3305 else if (IS_DIGIT (peek)
3306 || (peek == 'o' && d_peek_next_char (di) == 'n'))
3307 {
3308 /* We can get an unqualified name as an expression in the case of
3309 a dependent function call, i.e. decltype(f(t)). */
3310 struct demangle_component *name;
3311
3312 if (peek == 'o')
3313 /* operator-function-id, i.e. operator+(t). */
3314 d_advance (di, 2);
3315
3316 name = d_unqualified_name (di);
3317 if (name == NULL)
3318 return NULL;
3319 if (d_peek_char (di) == 'I')
3320 return d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, name,
3321 d_template_args (di));
3322 else
3323 return name;
3324 }
3325 else if ((peek == 'i' || peek == 't')
3326 && d_peek_next_char (di) == 'l')
3327 {
3328 /* Brace-enclosed initializer list, untyped or typed. */
3329 struct demangle_component *type = NULL;
3330 if (peek == 't')
3331 type = cplus_demangle_type (di);
3332 if (!d_peek_next_char (di))
3333 return NULL;
3334 d_advance (di, 2);
3335 return d_make_comp (di, DEMANGLE_COMPONENT_INITIALIZER_LIST,
3336 type, d_exprlist (di, 'E'));
3337 }
3338 else
3339 {
3340 struct demangle_component *op;
3341 const char *code = NULL;
3342 int args;
3343
3344 op = d_operator_name (di);
3345 if (op == NULL)
3346 return NULL;
3347
3348 if (op->type == DEMANGLE_COMPONENT_OPERATOR)
3349 {
3350 code = op->u.s_operator.op->code;
3351 di->expansion += op->u.s_operator.op->len - 2;
3352 if (strcmp (code, "st") == 0)
3353 return d_make_comp (di, DEMANGLE_COMPONENT_UNARY, op,
3354 cplus_demangle_type (di));
3355 }
3356
3357 switch (op->type)
3358 {
3359 default:
3360 return NULL;
3361 case DEMANGLE_COMPONENT_OPERATOR:
3362 args = op->u.s_operator.op->args;
3363 break;
3364 case DEMANGLE_COMPONENT_EXTENDED_OPERATOR:
3365 args = op->u.s_extended_operator.args;
3366 break;
3367 case DEMANGLE_COMPONENT_CAST:
3368 args = 1;
3369 break;
3370 }
3371
3372 switch (args)
3373 {
3374 case 0:
3375 return d_make_comp (di, DEMANGLE_COMPONENT_NULLARY, op, NULL);
3376
3377 case 1:
3378 {
3379 struct demangle_component *operand;
3380 int suffix = 0;
3381
3382 if (code && (code[0] == 'p' || code[0] == 'm')
3383 && code[1] == code[0])
3384 /* pp_ and mm_ are the prefix variants. */
3385 suffix = !d_check_char (di, '_');
3386
3387 if (op->type == DEMANGLE_COMPONENT_CAST
3388 && d_check_char (di, '_'))
3389 operand = d_exprlist (di, 'E');
3390 else if (code && !strcmp (code, "sP"))
3391 operand = d_template_args_1 (di);
3392 else
3393 operand = d_expression_1 (di);
3394
3395 if (suffix)
3396 /* Indicate the suffix variant for d_print_comp. */
3397 operand = d_make_comp (di, DEMANGLE_COMPONENT_BINARY_ARGS,
3398 operand, operand);
3399
3400 return d_make_comp (di, DEMANGLE_COMPONENT_UNARY, op, operand);
3401 }
3402 case 2:
3403 {
3404 struct demangle_component *left;
3405 struct demangle_component *right;
3406
3407 if (code == NULL)
3408 return NULL;
3409 if (op_is_new_cast (op))
3410 left = cplus_demangle_type (di);
3411 else if (code[0] == 'f')
3412 /* fold-expression. */
3413 left = d_operator_name (di);
3414 else
3415 left = d_expression_1 (di);
3416 if (!strcmp (code, "cl"))
3417 right = d_exprlist (di, 'E');
3418 else if (!strcmp (code, "dt") || !strcmp (code, "pt"))
3419 {
3420 right = d_unqualified_name (di);
3421 if (d_peek_char (di) == 'I')
3422 right = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE,
3423 right, d_template_args (di));
3424 }
3425 else
3426 right = d_expression_1 (di);
3427
3428 return d_make_comp (di, DEMANGLE_COMPONENT_BINARY, op,
3429 d_make_comp (di,
3430 DEMANGLE_COMPONENT_BINARY_ARGS,
3431 left, right));
3432 }
3433 case 3:
3434 {
3435 struct demangle_component *first;
3436 struct demangle_component *second;
3437 struct demangle_component *third;
3438
3439 if (code == NULL)
3440 return NULL;
3441 else if (!strcmp (code, "qu"))
3442 {
3443 /* ?: expression. */
3444 first = d_expression_1 (di);
3445 second = d_expression_1 (di);
3446 third = d_expression_1 (di);
3447 if (third == NULL)
3448 return NULL;
3449 }
3450 else if (code[0] == 'f')
3451 {
3452 /* fold-expression. */
3453 first = d_operator_name (di);
3454 second = d_expression_1 (di);
3455 third = d_expression_1 (di);
3456 if (third == NULL)
3457 return NULL;
3458 }
3459 else if (code[0] == 'n')
3460 {
3461 /* new-expression. */
3462 if (code[1] != 'w' && code[1] != 'a')
3463 return NULL;
3464 first = d_exprlist (di, '_');
3465 second = cplus_demangle_type (di);
3466 if (d_peek_char (di) == 'E')
3467 {
3468 d_advance (di, 1);
3469 third = NULL;
3470 }
3471 else if (d_peek_char (di) == 'p'
3472 && d_peek_next_char (di) == 'i')
3473 {
3474 /* Parenthesized initializer. */
3475 d_advance (di, 2);
3476 third = d_exprlist (di, 'E');
3477 }
3478 else if (d_peek_char (di) == 'i'
3479 && d_peek_next_char (di) == 'l')
3480 /* initializer-list. */
3481 third = d_expression_1 (di);
3482 else
3483 return NULL;
3484 }
3485 else
3486 return NULL;
3487 return d_make_comp (di, DEMANGLE_COMPONENT_TRINARY, op,
3488 d_make_comp (di,
3489 DEMANGLE_COMPONENT_TRINARY_ARG1,
3490 first,
3491 d_make_comp (di,
3492 DEMANGLE_COMPONENT_TRINARY_ARG2,
3493 second, third)));
3494 }
3495 default:
3496 return NULL;
3497 }
3498 }
3499 }
3500
3501 static struct demangle_component *
d_expression(struct d_info * di)3502 d_expression (struct d_info *di)
3503 {
3504 struct demangle_component *ret;
3505 int was_expression = di->is_expression;
3506
3507 di->is_expression = 1;
3508 ret = d_expression_1 (di);
3509 di->is_expression = was_expression;
3510 return ret;
3511 }
3512
3513 /* <expr-primary> ::= L <type> <(value) number> E
3514 ::= L <type> <(value) float> E
3515 ::= L <mangled-name> E
3516 */
3517
3518 static struct demangle_component *
d_expr_primary(struct d_info * di)3519 d_expr_primary (struct d_info *di)
3520 {
3521 struct demangle_component *ret;
3522
3523 if (! d_check_char (di, 'L'))
3524 return NULL;
3525 if (d_peek_char (di) == '_'
3526 /* Workaround for G++ bug; see comment in write_template_arg. */
3527 || d_peek_char (di) == 'Z')
3528 ret = cplus_demangle_mangled_name (di, 0);
3529 else
3530 {
3531 struct demangle_component *type;
3532 enum demangle_component_type t;
3533 const char *s;
3534
3535 type = cplus_demangle_type (di);
3536 if (type == NULL)
3537 return NULL;
3538
3539 /* If we have a type we know how to print, we aren't going to
3540 print the type name itself. */
3541 if (type->type == DEMANGLE_COMPONENT_BUILTIN_TYPE
3542 && type->u.s_builtin.type->print != D_PRINT_DEFAULT)
3543 di->expansion -= type->u.s_builtin.type->len;
3544
3545 /* Rather than try to interpret the literal value, we just
3546 collect it as a string. Note that it's possible to have a
3547 floating point literal here. The ABI specifies that the
3548 format of such literals is machine independent. That's fine,
3549 but what's not fine is that versions of g++ up to 3.2 with
3550 -fabi-version=1 used upper case letters in the hex constant,
3551 and dumped out gcc's internal representation. That makes it
3552 hard to tell where the constant ends, and hard to dump the
3553 constant in any readable form anyhow. We don't attempt to
3554 handle these cases. */
3555
3556 t = DEMANGLE_COMPONENT_LITERAL;
3557 if (d_peek_char (di) == 'n')
3558 {
3559 t = DEMANGLE_COMPONENT_LITERAL_NEG;
3560 d_advance (di, 1);
3561 }
3562 s = d_str (di);
3563 while (d_peek_char (di) != 'E')
3564 {
3565 if (d_peek_char (di) == '\0')
3566 return NULL;
3567 d_advance (di, 1);
3568 }
3569 ret = d_make_comp (di, t, type, d_make_name (di, s, d_str (di) - s));
3570 }
3571 if (! d_check_char (di, 'E'))
3572 return NULL;
3573 return ret;
3574 }
3575
3576 /* <local-name> ::= Z <(function) encoding> E <(entity) name> [<discriminator>]
3577 ::= Z <(function) encoding> E s [<discriminator>]
3578 ::= Z <(function) encoding> E d [<parameter> number>] _ <entity name>
3579 */
3580
3581 static struct demangle_component *
d_local_name(struct d_info * di)3582 d_local_name (struct d_info *di)
3583 {
3584 struct demangle_component *function;
3585 struct demangle_component *name;
3586
3587 if (! d_check_char (di, 'Z'))
3588 return NULL;
3589
3590 function = d_encoding (di, 0);
3591 if (!function)
3592 return NULL;
3593
3594 if (! d_check_char (di, 'E'))
3595 return NULL;
3596
3597 if (d_peek_char (di) == 's')
3598 {
3599 d_advance (di, 1);
3600 if (! d_discriminator (di))
3601 return NULL;
3602 name = d_make_name (di, "string literal", sizeof "string literal" - 1);
3603 }
3604 else
3605 {
3606 int num = -1;
3607
3608 if (d_peek_char (di) == 'd')
3609 {
3610 /* Default argument scope: d <number> _. */
3611 d_advance (di, 1);
3612 num = d_compact_number (di);
3613 if (num < 0)
3614 return NULL;
3615 }
3616
3617 name = d_name (di);
3618
3619 if (name
3620 /* Lambdas and unnamed types have internal discriminators
3621 and are not functions. */
3622 && name->type != DEMANGLE_COMPONENT_LAMBDA
3623 && name->type != DEMANGLE_COMPONENT_UNNAMED_TYPE)
3624 {
3625 /* Read and ignore an optional discriminator. */
3626 if (! d_discriminator (di))
3627 return NULL;
3628 }
3629
3630 if (num >= 0)
3631 name = d_make_default_arg (di, num, name);
3632 }
3633
3634 /* Elide the return type of the containing function so as to not
3635 confuse the user thinking it is the return type of whatever local
3636 function we might be containing. */
3637 if (function->type == DEMANGLE_COMPONENT_TYPED_NAME
3638 && d_right (function)->type == DEMANGLE_COMPONENT_FUNCTION_TYPE)
3639 d_left (d_right (function)) = NULL;
3640
3641 return d_make_comp (di, DEMANGLE_COMPONENT_LOCAL_NAME, function, name);
3642 }
3643
3644 /* <discriminator> ::= _ <number> # when number < 10
3645 ::= __ <number> _ # when number >= 10
3646
3647 <discriminator> ::= _ <number> # when number >=10
3648 is also accepted to support gcc versions that wrongly mangled that way.
3649
3650 We demangle the discriminator, but we don't print it out. FIXME:
3651 We should print it out in verbose mode. */
3652
3653 static int
d_discriminator(struct d_info * di)3654 d_discriminator (struct d_info *di)
3655 {
3656 int discrim, num_underscores = 1;
3657
3658 if (d_peek_char (di) != '_')
3659 return 1;
3660 d_advance (di, 1);
3661 if (d_peek_char (di) == '_')
3662 {
3663 ++num_underscores;
3664 d_advance (di, 1);
3665 }
3666
3667 discrim = d_number (di);
3668 if (discrim < 0)
3669 return 0;
3670 if (num_underscores > 1 && discrim >= 10)
3671 {
3672 if (d_peek_char (di) == '_')
3673 d_advance (di, 1);
3674 else
3675 return 0;
3676 }
3677
3678 return 1;
3679 }
3680
3681 /* <closure-type-name> ::= Ul <lambda-sig> E [ <nonnegative number> ] _ */
3682
3683 static struct demangle_component *
d_lambda(struct d_info * di)3684 d_lambda (struct d_info *di)
3685 {
3686 struct demangle_component *tl;
3687 struct demangle_component *ret;
3688 int num;
3689
3690 if (! d_check_char (di, 'U'))
3691 return NULL;
3692 if (! d_check_char (di, 'l'))
3693 return NULL;
3694
3695 tl = d_parmlist (di);
3696 if (tl == NULL)
3697 return NULL;
3698
3699 if (! d_check_char (di, 'E'))
3700 return NULL;
3701
3702 num = d_compact_number (di);
3703 if (num < 0)
3704 return NULL;
3705
3706 ret = d_make_empty (di);
3707 if (ret)
3708 {
3709 ret->type = DEMANGLE_COMPONENT_LAMBDA;
3710 ret->u.s_unary_num.sub = tl;
3711 ret->u.s_unary_num.num = num;
3712 }
3713
3714 if (! d_add_substitution (di, ret))
3715 return NULL;
3716
3717 return ret;
3718 }
3719
3720 /* <unnamed-type-name> ::= Ut [ <nonnegative number> ] _ */
3721
3722 static struct demangle_component *
d_unnamed_type(struct d_info * di)3723 d_unnamed_type (struct d_info *di)
3724 {
3725 struct demangle_component *ret;
3726 int num;
3727
3728 if (! d_check_char (di, 'U'))
3729 return NULL;
3730 if (! d_check_char (di, 't'))
3731 return NULL;
3732
3733 num = d_compact_number (di);
3734 if (num < 0)
3735 return NULL;
3736
3737 ret = d_make_empty (di);
3738 if (ret)
3739 {
3740 ret->type = DEMANGLE_COMPONENT_UNNAMED_TYPE;
3741 ret->u.s_number.number = num;
3742 }
3743
3744 if (! d_add_substitution (di, ret))
3745 return NULL;
3746
3747 return ret;
3748 }
3749
3750 /* <clone-suffix> ::= [ . <clone-type-identifier> ] [ . <nonnegative number> ]*
3751 */
3752
3753 static struct demangle_component *
d_clone_suffix(struct d_info * di,struct demangle_component * encoding)3754 d_clone_suffix (struct d_info *di, struct demangle_component *encoding)
3755 {
3756 const char *suffix = d_str (di);
3757 const char *pend = suffix;
3758 struct demangle_component *n;
3759
3760 if (*pend == '.' && (IS_LOWER (pend[1]) || pend[1] == '_'))
3761 {
3762 pend += 2;
3763 while (IS_LOWER (*pend) || *pend == '_')
3764 ++pend;
3765 }
3766 while (*pend == '.' && IS_DIGIT (pend[1]))
3767 {
3768 pend += 2;
3769 while (IS_DIGIT (*pend))
3770 ++pend;
3771 }
3772 d_advance (di, pend - suffix);
3773 n = d_make_name (di, suffix, pend - suffix);
3774 return d_make_comp (di, DEMANGLE_COMPONENT_CLONE, encoding, n);
3775 }
3776
3777 /* Add a new substitution. */
3778
3779 static int
d_add_substitution(struct d_info * di,struct demangle_component * dc)3780 d_add_substitution (struct d_info *di, struct demangle_component *dc)
3781 {
3782 if (dc == NULL)
3783 return 0;
3784 if (di->next_sub >= di->num_subs)
3785 return 0;
3786 di->subs[di->next_sub] = dc;
3787 ++di->next_sub;
3788 return 1;
3789 }
3790
3791 /* <substitution> ::= S <seq-id> _
3792 ::= S_
3793 ::= St
3794 ::= Sa
3795 ::= Sb
3796 ::= Ss
3797 ::= Si
3798 ::= So
3799 ::= Sd
3800
3801 If PREFIX is non-zero, then this type is being used as a prefix in
3802 a qualified name. In this case, for the standard substitutions, we
3803 need to check whether we are being used as a prefix for a
3804 constructor or destructor, and return a full template name.
3805 Otherwise we will get something like std::iostream::~iostream()
3806 which does not correspond particularly well to any function which
3807 actually appears in the source.
3808 */
3809
3810 static const struct d_standard_sub_info standard_subs[] =
3811 {
3812 { 't', NL ("std"),
3813 NL ("std"),
3814 NULL, 0 },
3815 { 'a', NL ("std::allocator"),
3816 NL ("std::allocator"),
3817 NL ("allocator") },
3818 { 'b', NL ("std::basic_string"),
3819 NL ("std::basic_string"),
3820 NL ("basic_string") },
3821 { 's', NL ("std::string"),
3822 NL ("std::basic_string<char, std::char_traits<char>, std::allocator<char> >"),
3823 NL ("basic_string") },
3824 { 'i', NL ("std::istream"),
3825 NL ("std::basic_istream<char, std::char_traits<char> >"),
3826 NL ("basic_istream") },
3827 { 'o', NL ("std::ostream"),
3828 NL ("std::basic_ostream<char, std::char_traits<char> >"),
3829 NL ("basic_ostream") },
3830 { 'd', NL ("std::iostream"),
3831 NL ("std::basic_iostream<char, std::char_traits<char> >"),
3832 NL ("basic_iostream") }
3833 };
3834
3835 static struct demangle_component *
d_substitution(struct d_info * di,int prefix)3836 d_substitution (struct d_info *di, int prefix)
3837 {
3838 char c;
3839
3840 if (! d_check_char (di, 'S'))
3841 return NULL;
3842
3843 c = d_next_char (di);
3844 if (c == '_' || IS_DIGIT (c) || IS_UPPER (c))
3845 {
3846 unsigned int id;
3847
3848 id = 0;
3849 if (c != '_')
3850 {
3851 do
3852 {
3853 unsigned int new_id;
3854
3855 if (IS_DIGIT (c))
3856 new_id = id * 36 + c - '0';
3857 else if (IS_UPPER (c))
3858 new_id = id * 36 + c - 'A' + 10;
3859 else
3860 return NULL;
3861 if (new_id < id)
3862 return NULL;
3863 id = new_id;
3864 c = d_next_char (di);
3865 }
3866 while (c != '_');
3867
3868 ++id;
3869 }
3870
3871 if (id >= (unsigned int) di->next_sub)
3872 return NULL;
3873
3874 return di->subs[id];
3875 }
3876 else
3877 {
3878 int verbose;
3879 const struct d_standard_sub_info *p;
3880 const struct d_standard_sub_info *pend;
3881
3882 verbose = (di->options & DMGL_VERBOSE) != 0;
3883 if (! verbose && prefix)
3884 {
3885 char peek;
3886
3887 peek = d_peek_char (di);
3888 if (peek == 'C' || peek == 'D')
3889 verbose = 1;
3890 }
3891
3892 pend = (&standard_subs[0]
3893 + sizeof standard_subs / sizeof standard_subs[0]);
3894 for (p = &standard_subs[0]; p < pend; ++p)
3895 {
3896 if (c == p->code)
3897 {
3898 const char *s;
3899 int len;
3900 struct demangle_component *dc;
3901
3902 if (p->set_last_name != NULL)
3903 di->last_name = d_make_sub (di, p->set_last_name,
3904 p->set_last_name_len);
3905 if (verbose)
3906 {
3907 s = p->full_expansion;
3908 len = p->full_len;
3909 }
3910 else
3911 {
3912 s = p->simple_expansion;
3913 len = p->simple_len;
3914 }
3915 di->expansion += len;
3916 dc = d_make_sub (di, s, len);
3917 if (d_peek_char (di) == 'B')
3918 {
3919 /* If there are ABI tags on the abbreviation, it becomes
3920 a substitution candidate. */
3921 dc = d_abi_tags (di, dc);
3922 if (! d_add_substitution (di, dc))
3923 return NULL;
3924 }
3925 return dc;
3926 }
3927 }
3928
3929 return NULL;
3930 }
3931 }
3932
3933 static void
d_checkpoint(struct d_info * di,struct d_info_checkpoint * checkpoint)3934 d_checkpoint (struct d_info *di, struct d_info_checkpoint *checkpoint)
3935 {
3936 checkpoint->n = di->n;
3937 checkpoint->next_comp = di->next_comp;
3938 checkpoint->next_sub = di->next_sub;
3939 checkpoint->expansion = di->expansion;
3940 }
3941
3942 static void
d_backtrack(struct d_info * di,struct d_info_checkpoint * checkpoint)3943 d_backtrack (struct d_info *di, struct d_info_checkpoint *checkpoint)
3944 {
3945 di->n = checkpoint->n;
3946 di->next_comp = checkpoint->next_comp;
3947 di->next_sub = checkpoint->next_sub;
3948 di->expansion = checkpoint->expansion;
3949 }
3950
3951 /* Initialize a growable string. */
3952
3953 static void
d_growable_string_init(struct d_growable_string * dgs,size_t estimate)3954 d_growable_string_init (struct d_growable_string *dgs, size_t estimate)
3955 {
3956 dgs->buf = NULL;
3957 dgs->len = 0;
3958 dgs->alc = 0;
3959 dgs->allocation_failure = 0;
3960
3961 if (estimate > 0)
3962 d_growable_string_resize (dgs, estimate);
3963 }
3964
3965 /* Grow a growable string to a given size. */
3966
3967 static inline void
d_growable_string_resize(struct d_growable_string * dgs,size_t need)3968 d_growable_string_resize (struct d_growable_string *dgs, size_t need)
3969 {
3970 size_t newalc;
3971 char *newbuf;
3972
3973 if (dgs->allocation_failure)
3974 return;
3975
3976 /* Start allocation at two bytes to avoid any possibility of confusion
3977 with the special value of 1 used as a return in *palc to indicate
3978 allocation failures. */
3979 newalc = dgs->alc > 0 ? dgs->alc : 2;
3980 while (newalc < need)
3981 newalc <<= 1;
3982
3983 newbuf = (char *) realloc (dgs->buf, newalc);
3984 if (newbuf == NULL)
3985 {
3986 free (dgs->buf);
3987 dgs->buf = NULL;
3988 dgs->len = 0;
3989 dgs->alc = 0;
3990 dgs->allocation_failure = 1;
3991 return;
3992 }
3993 dgs->buf = newbuf;
3994 dgs->alc = newalc;
3995 }
3996
3997 /* Append a buffer to a growable string. */
3998
3999 static inline void
d_growable_string_append_buffer(struct d_growable_string * dgs,const char * s,size_t l)4000 d_growable_string_append_buffer (struct d_growable_string *dgs,
4001 const char *s, size_t l)
4002 {
4003 size_t need;
4004
4005 need = dgs->len + l + 1;
4006 if (need > dgs->alc)
4007 d_growable_string_resize (dgs, need);
4008
4009 if (dgs->allocation_failure)
4010 return;
4011
4012 memcpy (dgs->buf + dgs->len, s, l);
4013 dgs->buf[dgs->len + l] = '\0';
4014 dgs->len += l;
4015 }
4016
4017 /* Bridge growable strings to the callback mechanism. */
4018
4019 static void
d_growable_string_callback_adapter(const char * s,size_t l,void * opaque)4020 d_growable_string_callback_adapter (const char *s, size_t l, void *opaque)
4021 {
4022 struct d_growable_string *dgs = (struct d_growable_string*) opaque;
4023
4024 d_growable_string_append_buffer (dgs, s, l);
4025 }
4026
4027 /* Walk the tree, counting the number of templates encountered, and
4028 the number of times a scope might be saved. These counts will be
4029 used to allocate data structures for d_print_comp, so the logic
4030 here must mirror the logic d_print_comp will use. It is not
4031 important that the resulting numbers are exact, so long as they
4032 are larger than the actual numbers encountered. */
4033
4034 static void
d_count_templates_scopes(int * num_templates,int * num_scopes,const struct demangle_component * dc)4035 d_count_templates_scopes (int *num_templates, int *num_scopes,
4036 const struct demangle_component *dc)
4037 {
4038 if (dc == NULL)
4039 return;
4040
4041 switch (dc->type)
4042 {
4043 case DEMANGLE_COMPONENT_NAME:
4044 case DEMANGLE_COMPONENT_TEMPLATE_PARAM:
4045 case DEMANGLE_COMPONENT_FUNCTION_PARAM:
4046 case DEMANGLE_COMPONENT_SUB_STD:
4047 case DEMANGLE_COMPONENT_BUILTIN_TYPE:
4048 case DEMANGLE_COMPONENT_OPERATOR:
4049 case DEMANGLE_COMPONENT_CHARACTER:
4050 case DEMANGLE_COMPONENT_NUMBER:
4051 case DEMANGLE_COMPONENT_UNNAMED_TYPE:
4052 break;
4053
4054 case DEMANGLE_COMPONENT_TEMPLATE:
4055 (*num_templates)++;
4056 goto recurse_left_right;
4057
4058 case DEMANGLE_COMPONENT_REFERENCE:
4059 case DEMANGLE_COMPONENT_RVALUE_REFERENCE:
4060 if (d_left (dc)->type == DEMANGLE_COMPONENT_TEMPLATE_PARAM)
4061 (*num_scopes)++;
4062 goto recurse_left_right;
4063
4064 case DEMANGLE_COMPONENT_QUAL_NAME:
4065 case DEMANGLE_COMPONENT_LOCAL_NAME:
4066 case DEMANGLE_COMPONENT_TYPED_NAME:
4067 case DEMANGLE_COMPONENT_VTABLE:
4068 case DEMANGLE_COMPONENT_VTT:
4069 case DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE:
4070 case DEMANGLE_COMPONENT_TYPEINFO:
4071 case DEMANGLE_COMPONENT_TYPEINFO_NAME:
4072 case DEMANGLE_COMPONENT_TYPEINFO_FN:
4073 case DEMANGLE_COMPONENT_THUNK:
4074 case DEMANGLE_COMPONENT_VIRTUAL_THUNK:
4075 case DEMANGLE_COMPONENT_COVARIANT_THUNK:
4076 case DEMANGLE_COMPONENT_JAVA_CLASS:
4077 case DEMANGLE_COMPONENT_GUARD:
4078 case DEMANGLE_COMPONENT_TLS_INIT:
4079 case DEMANGLE_COMPONENT_TLS_WRAPPER:
4080 case DEMANGLE_COMPONENT_REFTEMP:
4081 case DEMANGLE_COMPONENT_HIDDEN_ALIAS:
4082 case DEMANGLE_COMPONENT_RESTRICT:
4083 case DEMANGLE_COMPONENT_VOLATILE:
4084 case DEMANGLE_COMPONENT_CONST:
4085 case DEMANGLE_COMPONENT_RESTRICT_THIS:
4086 case DEMANGLE_COMPONENT_VOLATILE_THIS:
4087 case DEMANGLE_COMPONENT_CONST_THIS:
4088 case DEMANGLE_COMPONENT_REFERENCE_THIS:
4089 case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS:
4090 case DEMANGLE_COMPONENT_TRANSACTION_SAFE:
4091 case DEMANGLE_COMPONENT_NOEXCEPT:
4092 case DEMANGLE_COMPONENT_THROW_SPEC:
4093 case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
4094 case DEMANGLE_COMPONENT_POINTER:
4095 case DEMANGLE_COMPONENT_COMPLEX:
4096 case DEMANGLE_COMPONENT_IMAGINARY:
4097 case DEMANGLE_COMPONENT_VENDOR_TYPE:
4098 case DEMANGLE_COMPONENT_FUNCTION_TYPE:
4099 case DEMANGLE_COMPONENT_ARRAY_TYPE:
4100 case DEMANGLE_COMPONENT_PTRMEM_TYPE:
4101 case DEMANGLE_COMPONENT_VECTOR_TYPE:
4102 case DEMANGLE_COMPONENT_ARGLIST:
4103 case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST:
4104 case DEMANGLE_COMPONENT_INITIALIZER_LIST:
4105 case DEMANGLE_COMPONENT_CAST:
4106 case DEMANGLE_COMPONENT_CONVERSION:
4107 case DEMANGLE_COMPONENT_NULLARY:
4108 case DEMANGLE_COMPONENT_UNARY:
4109 case DEMANGLE_COMPONENT_BINARY:
4110 case DEMANGLE_COMPONENT_BINARY_ARGS:
4111 case DEMANGLE_COMPONENT_TRINARY:
4112 case DEMANGLE_COMPONENT_TRINARY_ARG1:
4113 case DEMANGLE_COMPONENT_TRINARY_ARG2:
4114 case DEMANGLE_COMPONENT_LITERAL:
4115 case DEMANGLE_COMPONENT_LITERAL_NEG:
4116 case DEMANGLE_COMPONENT_JAVA_RESOURCE:
4117 case DEMANGLE_COMPONENT_COMPOUND_NAME:
4118 case DEMANGLE_COMPONENT_DECLTYPE:
4119 case DEMANGLE_COMPONENT_TRANSACTION_CLONE:
4120 case DEMANGLE_COMPONENT_NONTRANSACTION_CLONE:
4121 case DEMANGLE_COMPONENT_PACK_EXPANSION:
4122 case DEMANGLE_COMPONENT_TAGGED_NAME:
4123 case DEMANGLE_COMPONENT_CLONE:
4124 recurse_left_right:
4125 d_count_templates_scopes (num_templates, num_scopes,
4126 d_left (dc));
4127 d_count_templates_scopes (num_templates, num_scopes,
4128 d_right (dc));
4129 break;
4130
4131 case DEMANGLE_COMPONENT_CTOR:
4132 d_count_templates_scopes (num_templates, num_scopes,
4133 dc->u.s_ctor.name);
4134 break;
4135
4136 case DEMANGLE_COMPONENT_DTOR:
4137 d_count_templates_scopes (num_templates, num_scopes,
4138 dc->u.s_dtor.name);
4139 break;
4140
4141 case DEMANGLE_COMPONENT_EXTENDED_OPERATOR:
4142 d_count_templates_scopes (num_templates, num_scopes,
4143 dc->u.s_extended_operator.name);
4144 break;
4145
4146 case DEMANGLE_COMPONENT_FIXED_TYPE:
4147 d_count_templates_scopes (num_templates, num_scopes,
4148 dc->u.s_fixed.length);
4149 break;
4150
4151 case DEMANGLE_COMPONENT_GLOBAL_CONSTRUCTORS:
4152 case DEMANGLE_COMPONENT_GLOBAL_DESTRUCTORS:
4153 d_count_templates_scopes (num_templates, num_scopes,
4154 d_left (dc));
4155 break;
4156
4157 case DEMANGLE_COMPONENT_LAMBDA:
4158 case DEMANGLE_COMPONENT_DEFAULT_ARG:
4159 d_count_templates_scopes (num_templates, num_scopes,
4160 dc->u.s_unary_num.sub);
4161 break;
4162 }
4163 }
4164
4165 /* Initialize a print information structure. */
4166
4167 static void
d_print_init(struct d_print_info * dpi,demangle_callbackref callback,void * opaque,const struct demangle_component * dc)4168 d_print_init (struct d_print_info *dpi, demangle_callbackref callback,
4169 void *opaque, const struct demangle_component *dc)
4170 {
4171 dpi->len = 0;
4172 dpi->last_char = '\0';
4173 dpi->templates = NULL;
4174 dpi->modifiers = NULL;
4175 dpi->pack_index = 0;
4176 dpi->flush_count = 0;
4177
4178 dpi->callback = callback;
4179 dpi->opaque = opaque;
4180
4181 dpi->demangle_failure = 0;
4182 dpi->recursion = 0;
4183 dpi->is_lambda_arg = 0;
4184
4185 dpi->component_stack = NULL;
4186
4187 dpi->saved_scopes = NULL;
4188 dpi->next_saved_scope = 0;
4189 dpi->num_saved_scopes = 0;
4190
4191 dpi->copy_templates = NULL;
4192 dpi->next_copy_template = 0;
4193 dpi->num_copy_templates = 0;
4194
4195 d_count_templates_scopes (&dpi->num_copy_templates,
4196 &dpi->num_saved_scopes, dc);
4197 dpi->num_copy_templates *= dpi->num_saved_scopes;
4198
4199 dpi->current_template = NULL;
4200 }
4201
4202 /* Indicate that an error occurred during printing, and test for error. */
4203
4204 static inline void
d_print_error(struct d_print_info * dpi)4205 d_print_error (struct d_print_info *dpi)
4206 {
4207 dpi->demangle_failure = 1;
4208 }
4209
4210 static inline int
d_print_saw_error(struct d_print_info * dpi)4211 d_print_saw_error (struct d_print_info *dpi)
4212 {
4213 return dpi->demangle_failure != 0;
4214 }
4215
4216 /* Flush buffered characters to the callback. */
4217
4218 static inline void
d_print_flush(struct d_print_info * dpi)4219 d_print_flush (struct d_print_info *dpi)
4220 {
4221 dpi->buf[dpi->len] = '\0';
4222 dpi->callback (dpi->buf, dpi->len, dpi->opaque);
4223 dpi->len = 0;
4224 dpi->flush_count++;
4225 }
4226
4227 /* Append characters and buffers for printing. */
4228
4229 static inline void
d_append_char(struct d_print_info * dpi,char c)4230 d_append_char (struct d_print_info *dpi, char c)
4231 {
4232 if (dpi->len == sizeof (dpi->buf) - 1)
4233 d_print_flush (dpi);
4234
4235 dpi->buf[dpi->len++] = c;
4236 dpi->last_char = c;
4237 }
4238
4239 static inline void
d_append_buffer(struct d_print_info * dpi,const char * s,size_t l)4240 d_append_buffer (struct d_print_info *dpi, const char *s, size_t l)
4241 {
4242 size_t i;
4243
4244 for (i = 0; i < l; i++)
4245 d_append_char (dpi, s[i]);
4246 }
4247
4248 static inline void
d_append_string(struct d_print_info * dpi,const char * s)4249 d_append_string (struct d_print_info *dpi, const char *s)
4250 {
4251 d_append_buffer (dpi, s, strlen (s));
4252 }
4253
4254 static inline void
d_append_num(struct d_print_info * dpi,int l)4255 d_append_num (struct d_print_info *dpi, int l)
4256 {
4257 char buf[25];
4258 sprintf (buf,"%d", l);
4259 d_append_string (dpi, buf);
4260 }
4261
4262 static inline char
d_last_char(struct d_print_info * dpi)4263 d_last_char (struct d_print_info *dpi)
4264 {
4265 return dpi->last_char;
4266 }
4267
4268 /* Turn components into a human readable string. OPTIONS is the
4269 options bits passed to the demangler. DC is the tree to print.
4270 CALLBACK is a function to call to flush demangled string segments
4271 as they fill the intermediate buffer, and OPAQUE is a generalized
4272 callback argument. On success, this returns 1. On failure,
4273 it returns 0, indicating a bad parse. It does not use heap
4274 memory to build an output string, so cannot encounter memory
4275 allocation failure. */
4276
4277 CP_STATIC_IF_GLIBCPP_V3
4278 int
cplus_demangle_print_callback(int options,struct demangle_component * dc,demangle_callbackref callback,void * opaque)4279 cplus_demangle_print_callback (int options,
4280 struct demangle_component *dc,
4281 demangle_callbackref callback, void *opaque)
4282 {
4283 struct d_print_info dpi;
4284
4285 d_print_init (&dpi, callback, opaque, dc);
4286
4287 {
4288 #ifdef CP_DYNAMIC_ARRAYS
4289 /* Avoid zero-length VLAs, which are prohibited by the C99 standard
4290 and flagged as errors by Address Sanitizer. */
4291 __extension__ struct d_saved_scope scopes[(dpi.num_saved_scopes > 0)
4292 ? dpi.num_saved_scopes : 1];
4293 __extension__ struct d_print_template temps[(dpi.num_copy_templates > 0)
4294 ? dpi.num_copy_templates : 1];
4295
4296 dpi.saved_scopes = scopes;
4297 dpi.copy_templates = temps;
4298 #else
4299 dpi.saved_scopes = alloca (dpi.num_saved_scopes
4300 * sizeof (*dpi.saved_scopes));
4301 dpi.copy_templates = alloca (dpi.num_copy_templates
4302 * sizeof (*dpi.copy_templates));
4303 #endif
4304
4305 d_print_comp (&dpi, options, dc);
4306 }
4307
4308 d_print_flush (&dpi);
4309
4310 return ! d_print_saw_error (&dpi);
4311 }
4312
4313 /* Turn components into a human readable string. OPTIONS is the
4314 options bits passed to the demangler. DC is the tree to print.
4315 ESTIMATE is a guess at the length of the result. This returns a
4316 string allocated by malloc, or NULL on error. On success, this
4317 sets *PALC to the size of the allocated buffer. On failure, this
4318 sets *PALC to 0 for a bad parse, or to 1 for a memory allocation
4319 failure. */
4320
4321 CP_STATIC_IF_GLIBCPP_V3
4322 char *
cplus_demangle_print(int options,struct demangle_component * dc,int estimate,size_t * palc)4323 cplus_demangle_print (int options, struct demangle_component *dc,
4324 int estimate, size_t *palc)
4325 {
4326 struct d_growable_string dgs;
4327
4328 d_growable_string_init (&dgs, estimate);
4329
4330 if (! cplus_demangle_print_callback (options, dc,
4331 d_growable_string_callback_adapter,
4332 &dgs))
4333 {
4334 free (dgs.buf);
4335 *palc = 0;
4336 return NULL;
4337 }
4338
4339 *palc = dgs.allocation_failure ? 1 : dgs.alc;
4340 return dgs.buf;
4341 }
4342
4343 /* Returns the I'th element of the template arglist ARGS, or NULL on
4344 failure. If I is negative, return the entire arglist. */
4345
4346 static struct demangle_component *
d_index_template_argument(struct demangle_component * args,int i)4347 d_index_template_argument (struct demangle_component *args, int i)
4348 {
4349 struct demangle_component *a;
4350
4351 if (i < 0)
4352 /* Print the whole argument pack. */
4353 return args;
4354
4355 for (a = args;
4356 a != NULL;
4357 a = d_right (a))
4358 {
4359 if (a->type != DEMANGLE_COMPONENT_TEMPLATE_ARGLIST)
4360 return NULL;
4361 if (i <= 0)
4362 break;
4363 --i;
4364 }
4365 if (i != 0 || a == NULL)
4366 return NULL;
4367
4368 return d_left (a);
4369 }
4370
4371 /* Returns the template argument from the current context indicated by DC,
4372 which is a DEMANGLE_COMPONENT_TEMPLATE_PARAM, or NULL. */
4373
4374 static struct demangle_component *
d_lookup_template_argument(struct d_print_info * dpi,const struct demangle_component * dc)4375 d_lookup_template_argument (struct d_print_info *dpi,
4376 const struct demangle_component *dc)
4377 {
4378 if (dpi->templates == NULL)
4379 {
4380 d_print_error (dpi);
4381 return NULL;
4382 }
4383
4384 return d_index_template_argument
4385 (d_right (dpi->templates->template_decl),
4386 dc->u.s_number.number);
4387 }
4388
4389 /* Returns a template argument pack used in DC (any will do), or NULL. */
4390
4391 static struct demangle_component *
d_find_pack(struct d_print_info * dpi,const struct demangle_component * dc)4392 d_find_pack (struct d_print_info *dpi,
4393 const struct demangle_component *dc)
4394 {
4395 struct demangle_component *a;
4396 if (dc == NULL)
4397 return NULL;
4398
4399 switch (dc->type)
4400 {
4401 case DEMANGLE_COMPONENT_TEMPLATE_PARAM:
4402 a = d_lookup_template_argument (dpi, dc);
4403 if (a && a->type == DEMANGLE_COMPONENT_TEMPLATE_ARGLIST)
4404 return a;
4405 return NULL;
4406
4407 case DEMANGLE_COMPONENT_PACK_EXPANSION:
4408 return NULL;
4409
4410 case DEMANGLE_COMPONENT_LAMBDA:
4411 case DEMANGLE_COMPONENT_NAME:
4412 case DEMANGLE_COMPONENT_TAGGED_NAME:
4413 case DEMANGLE_COMPONENT_OPERATOR:
4414 case DEMANGLE_COMPONENT_BUILTIN_TYPE:
4415 case DEMANGLE_COMPONENT_SUB_STD:
4416 case DEMANGLE_COMPONENT_CHARACTER:
4417 case DEMANGLE_COMPONENT_FUNCTION_PARAM:
4418 case DEMANGLE_COMPONENT_UNNAMED_TYPE:
4419 case DEMANGLE_COMPONENT_FIXED_TYPE:
4420 case DEMANGLE_COMPONENT_DEFAULT_ARG:
4421 case DEMANGLE_COMPONENT_NUMBER:
4422 return NULL;
4423
4424 case DEMANGLE_COMPONENT_EXTENDED_OPERATOR:
4425 return d_find_pack (dpi, dc->u.s_extended_operator.name);
4426 case DEMANGLE_COMPONENT_CTOR:
4427 return d_find_pack (dpi, dc->u.s_ctor.name);
4428 case DEMANGLE_COMPONENT_DTOR:
4429 return d_find_pack (dpi, dc->u.s_dtor.name);
4430
4431 default:
4432 a = d_find_pack (dpi, d_left (dc));
4433 if (a)
4434 return a;
4435 return d_find_pack (dpi, d_right (dc));
4436 }
4437 }
4438
4439 /* Returns the length of the template argument pack DC. */
4440
4441 static int
d_pack_length(const struct demangle_component * dc)4442 d_pack_length (const struct demangle_component *dc)
4443 {
4444 int count = 0;
4445 while (dc && dc->type == DEMANGLE_COMPONENT_TEMPLATE_ARGLIST
4446 && d_left (dc) != NULL)
4447 {
4448 ++count;
4449 dc = d_right (dc);
4450 }
4451 return count;
4452 }
4453
4454 /* Returns the number of template args in DC, expanding any pack expansions
4455 found there. */
4456
4457 static int
d_args_length(struct d_print_info * dpi,const struct demangle_component * dc)4458 d_args_length (struct d_print_info *dpi, const struct demangle_component *dc)
4459 {
4460 int count = 0;
4461 for (; dc && dc->type == DEMANGLE_COMPONENT_TEMPLATE_ARGLIST;
4462 dc = d_right (dc))
4463 {
4464 struct demangle_component *elt = d_left (dc);
4465 if (elt == NULL)
4466 break;
4467 if (elt->type == DEMANGLE_COMPONENT_PACK_EXPANSION)
4468 {
4469 struct demangle_component *a = d_find_pack (dpi, d_left (elt));
4470 count += d_pack_length (a);
4471 }
4472 else
4473 ++count;
4474 }
4475 return count;
4476 }
4477
4478 /* DC is a component of a mangled expression. Print it, wrapped in parens
4479 if needed. */
4480
4481 static void
d_print_subexpr(struct d_print_info * dpi,int options,struct demangle_component * dc)4482 d_print_subexpr (struct d_print_info *dpi, int options,
4483 struct demangle_component *dc)
4484 {
4485 int simple = 0;
4486 if (dc->type == DEMANGLE_COMPONENT_NAME
4487 || dc->type == DEMANGLE_COMPONENT_QUAL_NAME
4488 || dc->type == DEMANGLE_COMPONENT_INITIALIZER_LIST
4489 || dc->type == DEMANGLE_COMPONENT_FUNCTION_PARAM)
4490 simple = 1;
4491 if (!simple)
4492 d_append_char (dpi, '(');
4493 d_print_comp (dpi, options, dc);
4494 if (!simple)
4495 d_append_char (dpi, ')');
4496 }
4497
4498 /* Save the current scope. */
4499
4500 static void
d_save_scope(struct d_print_info * dpi,const struct demangle_component * container)4501 d_save_scope (struct d_print_info *dpi,
4502 const struct demangle_component *container)
4503 {
4504 struct d_saved_scope *scope;
4505 struct d_print_template *src, **link;
4506
4507 if (dpi->next_saved_scope >= dpi->num_saved_scopes)
4508 {
4509 d_print_error (dpi);
4510 return;
4511 }
4512 scope = &dpi->saved_scopes[dpi->next_saved_scope];
4513 dpi->next_saved_scope++;
4514
4515 scope->container = container;
4516 link = &scope->templates;
4517
4518 for (src = dpi->templates; src != NULL; src = src->next)
4519 {
4520 struct d_print_template *dst;
4521
4522 if (dpi->next_copy_template >= dpi->num_copy_templates)
4523 {
4524 d_print_error (dpi);
4525 return;
4526 }
4527 dst = &dpi->copy_templates[dpi->next_copy_template];
4528 dpi->next_copy_template++;
4529
4530 dst->template_decl = src->template_decl;
4531 *link = dst;
4532 link = &dst->next;
4533 }
4534
4535 *link = NULL;
4536 }
4537
4538 /* Attempt to locate a previously saved scope. Returns NULL if no
4539 corresponding saved scope was found. */
4540
4541 static struct d_saved_scope *
d_get_saved_scope(struct d_print_info * dpi,const struct demangle_component * container)4542 d_get_saved_scope (struct d_print_info *dpi,
4543 const struct demangle_component *container)
4544 {
4545 int i;
4546
4547 for (i = 0; i < dpi->next_saved_scope; i++)
4548 if (dpi->saved_scopes[i].container == container)
4549 return &dpi->saved_scopes[i];
4550
4551 return NULL;
4552 }
4553
4554 /* If DC is a C++17 fold-expression, print it and return true; otherwise
4555 return false. */
4556
4557 static int
d_maybe_print_fold_expression(struct d_print_info * dpi,int options,struct demangle_component * dc)4558 d_maybe_print_fold_expression (struct d_print_info *dpi, int options,
4559 struct demangle_component *dc)
4560 {
4561 struct demangle_component *ops, *operator_, *op1, *op2;
4562 int save_idx;
4563
4564 const char *fold_code = d_left (dc)->u.s_operator.op->code;
4565 if (fold_code[0] != 'f')
4566 return 0;
4567
4568 ops = d_right (dc);
4569 operator_ = d_left (ops);
4570 op1 = d_right (ops);
4571 op2 = 0;
4572 if (op1->type == DEMANGLE_COMPONENT_TRINARY_ARG2)
4573 {
4574 op2 = d_right (op1);
4575 op1 = d_left (op1);
4576 }
4577
4578 /* Print the whole pack. */
4579 save_idx = dpi->pack_index;
4580 dpi->pack_index = -1;
4581
4582 switch (fold_code[1])
4583 {
4584 /* Unary left fold, (... + X). */
4585 case 'l':
4586 d_append_string (dpi, "(...");
4587 d_print_expr_op (dpi, options, operator_);
4588 d_print_subexpr (dpi, options, op1);
4589 d_append_char (dpi, ')');
4590 break;
4591
4592 /* Unary right fold, (X + ...). */
4593 case 'r':
4594 d_append_char (dpi, '(');
4595 d_print_subexpr (dpi, options, op1);
4596 d_print_expr_op (dpi, options, operator_);
4597 d_append_string (dpi, "...)");
4598 break;
4599
4600 /* Binary left fold, (42 + ... + X). */
4601 case 'L':
4602 /* Binary right fold, (X + ... + 42). */
4603 case 'R':
4604 d_append_char (dpi, '(');
4605 d_print_subexpr (dpi, options, op1);
4606 d_print_expr_op (dpi, options, operator_);
4607 d_append_string (dpi, "...");
4608 d_print_expr_op (dpi, options, operator_);
4609 d_print_subexpr (dpi, options, op2);
4610 d_append_char (dpi, ')');
4611 break;
4612 }
4613
4614 dpi->pack_index = save_idx;
4615 return 1;
4616 }
4617
4618 /* Subroutine to handle components. */
4619
4620 static void
d_print_comp_inner(struct d_print_info * dpi,int options,struct demangle_component * dc)4621 d_print_comp_inner (struct d_print_info *dpi, int options,
4622 struct demangle_component *dc)
4623 {
4624 /* Magic variable to let reference smashing skip over the next modifier
4625 without needing to modify *dc. */
4626 struct demangle_component *mod_inner = NULL;
4627
4628 /* Variable used to store the current templates while a previously
4629 captured scope is used. */
4630 struct d_print_template *saved_templates;
4631
4632 /* Nonzero if templates have been stored in the above variable. */
4633 int need_template_restore = 0;
4634
4635 if (dc == NULL)
4636 {
4637 d_print_error (dpi);
4638 return;
4639 }
4640 if (d_print_saw_error (dpi))
4641 return;
4642
4643 switch (dc->type)
4644 {
4645 case DEMANGLE_COMPONENT_NAME:
4646 if ((options & DMGL_JAVA) == 0)
4647 d_append_buffer (dpi, dc->u.s_name.s, dc->u.s_name.len);
4648 else
4649 d_print_java_identifier (dpi, dc->u.s_name.s, dc->u.s_name.len);
4650 return;
4651
4652 case DEMANGLE_COMPONENT_TAGGED_NAME:
4653 d_print_comp (dpi, options, d_left (dc));
4654 d_append_string (dpi, "[abi:");
4655 d_print_comp (dpi, options, d_right (dc));
4656 d_append_char (dpi, ']');
4657 return;
4658
4659 case DEMANGLE_COMPONENT_QUAL_NAME:
4660 case DEMANGLE_COMPONENT_LOCAL_NAME:
4661 d_print_comp (dpi, options, d_left (dc));
4662 if ((options & DMGL_JAVA) == 0)
4663 d_append_string (dpi, "::");
4664 else
4665 d_append_char (dpi, '.');
4666 {
4667 struct demangle_component *local_name = d_right (dc);
4668 if (local_name->type == DEMANGLE_COMPONENT_DEFAULT_ARG)
4669 {
4670 d_append_string (dpi, "{default arg#");
4671 d_append_num (dpi, local_name->u.s_unary_num.num + 1);
4672 d_append_string (dpi, "}::");
4673 local_name = local_name->u.s_unary_num.sub;
4674 }
4675 d_print_comp (dpi, options, local_name);
4676 }
4677 return;
4678
4679 case DEMANGLE_COMPONENT_TYPED_NAME:
4680 {
4681 struct d_print_mod *hold_modifiers;
4682 struct demangle_component *typed_name;
4683 struct d_print_mod adpm[4];
4684 unsigned int i;
4685 struct d_print_template dpt;
4686
4687 /* Pass the name down to the type so that it can be printed in
4688 the right place for the type. We also have to pass down
4689 any CV-qualifiers, which apply to the this parameter. */
4690 hold_modifiers = dpi->modifiers;
4691 dpi->modifiers = 0;
4692 i = 0;
4693 typed_name = d_left (dc);
4694 while (typed_name != NULL)
4695 {
4696 if (i >= sizeof adpm / sizeof adpm[0])
4697 {
4698 d_print_error (dpi);
4699 return;
4700 }
4701
4702 adpm[i].next = dpi->modifiers;
4703 dpi->modifiers = &adpm[i];
4704 adpm[i].mod = typed_name;
4705 adpm[i].printed = 0;
4706 adpm[i].templates = dpi->templates;
4707 ++i;
4708
4709 if (!is_fnqual_component_type (typed_name->type))
4710 break;
4711
4712 typed_name = d_left (typed_name);
4713 }
4714
4715 if (typed_name == NULL)
4716 {
4717 d_print_error (dpi);
4718 return;
4719 }
4720
4721 /* If typed_name is a DEMANGLE_COMPONENT_LOCAL_NAME, then
4722 there may be CV-qualifiers on its right argument which
4723 really apply here; this happens when parsing a class that
4724 is local to a function. */
4725 if (typed_name->type == DEMANGLE_COMPONENT_LOCAL_NAME)
4726 {
4727 typed_name = d_right (typed_name);
4728 if (typed_name->type == DEMANGLE_COMPONENT_DEFAULT_ARG)
4729 typed_name = typed_name->u.s_unary_num.sub;
4730 if (typed_name == NULL)
4731 {
4732 d_print_error (dpi);
4733 return;
4734 }
4735 while (is_fnqual_component_type (typed_name->type))
4736 {
4737 if (i >= sizeof adpm / sizeof adpm[0])
4738 {
4739 d_print_error (dpi);
4740 return;
4741 }
4742
4743 adpm[i] = adpm[i - 1];
4744 adpm[i].next = &adpm[i - 1];
4745 dpi->modifiers = &adpm[i];
4746
4747 adpm[i - 1].mod = typed_name;
4748 adpm[i - 1].printed = 0;
4749 adpm[i - 1].templates = dpi->templates;
4750 ++i;
4751
4752 typed_name = d_left (typed_name);
4753 }
4754 }
4755
4756 /* If typed_name is a template, then it applies to the
4757 function type as well. */
4758 if (typed_name->type == DEMANGLE_COMPONENT_TEMPLATE)
4759 {
4760 dpt.next = dpi->templates;
4761 dpi->templates = &dpt;
4762 dpt.template_decl = typed_name;
4763 }
4764
4765 d_print_comp (dpi, options, d_right (dc));
4766
4767 if (typed_name->type == DEMANGLE_COMPONENT_TEMPLATE)
4768 dpi->templates = dpt.next;
4769
4770 /* If the modifiers didn't get printed by the type, print them
4771 now. */
4772 while (i > 0)
4773 {
4774 --i;
4775 if (! adpm[i].printed)
4776 {
4777 d_append_char (dpi, ' ');
4778 d_print_mod (dpi, options, adpm[i].mod);
4779 }
4780 }
4781
4782 dpi->modifiers = hold_modifiers;
4783
4784 return;
4785 }
4786
4787 case DEMANGLE_COMPONENT_TEMPLATE:
4788 {
4789 struct d_print_mod *hold_dpm;
4790 struct demangle_component *dcl;
4791 const struct demangle_component *hold_current;
4792
4793 /* This template may need to be referenced by a cast operator
4794 contained in its subtree. */
4795 hold_current = dpi->current_template;
4796 dpi->current_template = dc;
4797
4798 /* Don't push modifiers into a template definition. Doing so
4799 could give the wrong definition for a template argument.
4800 Instead, treat the template essentially as a name. */
4801
4802 hold_dpm = dpi->modifiers;
4803 dpi->modifiers = NULL;
4804
4805 dcl = d_left (dc);
4806
4807 if ((options & DMGL_JAVA) != 0
4808 && dcl->type == DEMANGLE_COMPONENT_NAME
4809 && dcl->u.s_name.len == 6
4810 && strncmp (dcl->u.s_name.s, "JArray", 6) == 0)
4811 {
4812 /* Special-case Java arrays, so that JArray<TYPE> appears
4813 instead as TYPE[]. */
4814
4815 d_print_comp (dpi, options, d_right (dc));
4816 d_append_string (dpi, "[]");
4817 }
4818 else
4819 {
4820 d_print_comp (dpi, options, dcl);
4821 if (d_last_char (dpi) == '<')
4822 d_append_char (dpi, ' ');
4823 d_append_char (dpi, '<');
4824 d_print_comp (dpi, options, d_right (dc));
4825 /* Avoid generating two consecutive '>' characters, to avoid
4826 the C++ syntactic ambiguity. */
4827 if (d_last_char (dpi) == '>')
4828 d_append_char (dpi, ' ');
4829 d_append_char (dpi, '>');
4830 }
4831
4832 dpi->modifiers = hold_dpm;
4833 dpi->current_template = hold_current;
4834
4835 return;
4836 }
4837
4838 case DEMANGLE_COMPONENT_TEMPLATE_PARAM:
4839 if (dpi->is_lambda_arg)
4840 {
4841 /* Show the template parm index, as that's how g++ displays
4842 these, and future proofs us against potential
4843 '[]<typename T> (T *a, T *b) {...}'. */
4844 d_append_buffer (dpi, "auto:", 5);
4845 d_append_num (dpi, dc->u.s_number.number + 1);
4846 }
4847 else
4848 {
4849 struct d_print_template *hold_dpt;
4850 struct demangle_component *a = d_lookup_template_argument (dpi, dc);
4851
4852 if (a && a->type == DEMANGLE_COMPONENT_TEMPLATE_ARGLIST)
4853 a = d_index_template_argument (a, dpi->pack_index);
4854
4855 if (a == NULL)
4856 {
4857 d_print_error (dpi);
4858 return;
4859 }
4860
4861 /* While processing this parameter, we need to pop the list
4862 of templates. This is because the template parameter may
4863 itself be a reference to a parameter of an outer
4864 template. */
4865
4866 hold_dpt = dpi->templates;
4867 dpi->templates = hold_dpt->next;
4868
4869 d_print_comp (dpi, options, a);
4870
4871 dpi->templates = hold_dpt;
4872 }
4873 return;
4874
4875 case DEMANGLE_COMPONENT_CTOR:
4876 d_print_comp (dpi, options, dc->u.s_ctor.name);
4877 return;
4878
4879 case DEMANGLE_COMPONENT_DTOR:
4880 d_append_char (dpi, '~');
4881 d_print_comp (dpi, options, dc->u.s_dtor.name);
4882 return;
4883
4884 case DEMANGLE_COMPONENT_VTABLE:
4885 d_append_string (dpi, "vtable for ");
4886 d_print_comp (dpi, options, d_left (dc));
4887 return;
4888
4889 case DEMANGLE_COMPONENT_VTT:
4890 d_append_string (dpi, "VTT for ");
4891 d_print_comp (dpi, options, d_left (dc));
4892 return;
4893
4894 case DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE:
4895 d_append_string (dpi, "construction vtable for ");
4896 d_print_comp (dpi, options, d_left (dc));
4897 d_append_string (dpi, "-in-");
4898 d_print_comp (dpi, options, d_right (dc));
4899 return;
4900
4901 case DEMANGLE_COMPONENT_TYPEINFO:
4902 d_append_string (dpi, "typeinfo for ");
4903 d_print_comp (dpi, options, d_left (dc));
4904 return;
4905
4906 case DEMANGLE_COMPONENT_TYPEINFO_NAME:
4907 d_append_string (dpi, "typeinfo name for ");
4908 d_print_comp (dpi, options, d_left (dc));
4909 return;
4910
4911 case DEMANGLE_COMPONENT_TYPEINFO_FN:
4912 d_append_string (dpi, "typeinfo fn for ");
4913 d_print_comp (dpi, options, d_left (dc));
4914 return;
4915
4916 case DEMANGLE_COMPONENT_THUNK:
4917 d_append_string (dpi, "non-virtual thunk to ");
4918 d_print_comp (dpi, options, d_left (dc));
4919 return;
4920
4921 case DEMANGLE_COMPONENT_VIRTUAL_THUNK:
4922 d_append_string (dpi, "virtual thunk to ");
4923 d_print_comp (dpi, options, d_left (dc));
4924 return;
4925
4926 case DEMANGLE_COMPONENT_COVARIANT_THUNK:
4927 d_append_string (dpi, "covariant return thunk to ");
4928 d_print_comp (dpi, options, d_left (dc));
4929 return;
4930
4931 case DEMANGLE_COMPONENT_JAVA_CLASS:
4932 d_append_string (dpi, "java Class for ");
4933 d_print_comp (dpi, options, d_left (dc));
4934 return;
4935
4936 case DEMANGLE_COMPONENT_GUARD:
4937 d_append_string (dpi, "guard variable for ");
4938 d_print_comp (dpi, options, d_left (dc));
4939 return;
4940
4941 case DEMANGLE_COMPONENT_TLS_INIT:
4942 d_append_string (dpi, "TLS init function for ");
4943 d_print_comp (dpi, options, d_left (dc));
4944 return;
4945
4946 case DEMANGLE_COMPONENT_TLS_WRAPPER:
4947 d_append_string (dpi, "TLS wrapper function for ");
4948 d_print_comp (dpi, options, d_left (dc));
4949 return;
4950
4951 case DEMANGLE_COMPONENT_REFTEMP:
4952 d_append_string (dpi, "reference temporary #");
4953 d_print_comp (dpi, options, d_right (dc));
4954 d_append_string (dpi, " for ");
4955 d_print_comp (dpi, options, d_left (dc));
4956 return;
4957
4958 case DEMANGLE_COMPONENT_HIDDEN_ALIAS:
4959 d_append_string (dpi, "hidden alias for ");
4960 d_print_comp (dpi, options, d_left (dc));
4961 return;
4962
4963 case DEMANGLE_COMPONENT_TRANSACTION_CLONE:
4964 d_append_string (dpi, "transaction clone for ");
4965 d_print_comp (dpi, options, d_left (dc));
4966 return;
4967
4968 case DEMANGLE_COMPONENT_NONTRANSACTION_CLONE:
4969 d_append_string (dpi, "non-transaction clone for ");
4970 d_print_comp (dpi, options, d_left (dc));
4971 return;
4972
4973 case DEMANGLE_COMPONENT_SUB_STD:
4974 d_append_buffer (dpi, dc->u.s_string.string, dc->u.s_string.len);
4975 return;
4976
4977 case DEMANGLE_COMPONENT_RESTRICT:
4978 case DEMANGLE_COMPONENT_VOLATILE:
4979 case DEMANGLE_COMPONENT_CONST:
4980 {
4981 struct d_print_mod *pdpm;
4982
4983 /* When printing arrays, it's possible to have cases where the
4984 same CV-qualifier gets pushed on the stack multiple times.
4985 We only need to print it once. */
4986
4987 for (pdpm = dpi->modifiers; pdpm != NULL; pdpm = pdpm->next)
4988 {
4989 if (! pdpm->printed)
4990 {
4991 if (pdpm->mod->type != DEMANGLE_COMPONENT_RESTRICT
4992 && pdpm->mod->type != DEMANGLE_COMPONENT_VOLATILE
4993 && pdpm->mod->type != DEMANGLE_COMPONENT_CONST)
4994 break;
4995 if (pdpm->mod->type == dc->type)
4996 {
4997 d_print_comp (dpi, options, d_left (dc));
4998 return;
4999 }
5000 }
5001 }
5002 }
5003 goto modifier;
5004
5005 case DEMANGLE_COMPONENT_REFERENCE:
5006 case DEMANGLE_COMPONENT_RVALUE_REFERENCE:
5007 {
5008 /* Handle reference smashing: & + && = &. */
5009 struct demangle_component *sub = d_left (dc);
5010 if (!dpi->is_lambda_arg
5011 && sub->type == DEMANGLE_COMPONENT_TEMPLATE_PARAM)
5012 {
5013 struct d_saved_scope *scope = d_get_saved_scope (dpi, sub);
5014 struct demangle_component *a;
5015
5016 if (scope == NULL)
5017 {
5018 /* This is the first time SUB has been traversed.
5019 We need to capture the current templates so
5020 they can be restored if SUB is reentered as a
5021 substitution. */
5022 d_save_scope (dpi, sub);
5023 if (d_print_saw_error (dpi))
5024 return;
5025 }
5026 else
5027 {
5028 const struct d_component_stack *dcse;
5029 int found_self_or_parent = 0;
5030
5031 /* This traversal is reentering SUB as a substition.
5032 If we are not beneath SUB or DC in the tree then we
5033 need to restore SUB's template stack temporarily. */
5034 for (dcse = dpi->component_stack; dcse != NULL;
5035 dcse = dcse->parent)
5036 {
5037 if (dcse->dc == sub
5038 || (dcse->dc == dc
5039 && dcse != dpi->component_stack))
5040 {
5041 found_self_or_parent = 1;
5042 break;
5043 }
5044 }
5045
5046 if (!found_self_or_parent)
5047 {
5048 saved_templates = dpi->templates;
5049 dpi->templates = scope->templates;
5050 need_template_restore = 1;
5051 }
5052 }
5053
5054 a = d_lookup_template_argument (dpi, sub);
5055 if (a && a->type == DEMANGLE_COMPONENT_TEMPLATE_ARGLIST)
5056 a = d_index_template_argument (a, dpi->pack_index);
5057
5058 if (a == NULL)
5059 {
5060 if (need_template_restore)
5061 dpi->templates = saved_templates;
5062
5063 d_print_error (dpi);
5064 return;
5065 }
5066
5067 sub = a;
5068 }
5069
5070 if (sub->type == DEMANGLE_COMPONENT_REFERENCE
5071 || sub->type == dc->type)
5072 dc = sub;
5073 else if (sub->type == DEMANGLE_COMPONENT_RVALUE_REFERENCE)
5074 mod_inner = d_left (sub);
5075 }
5076 /* Fall through. */
5077
5078 case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
5079 case DEMANGLE_COMPONENT_POINTER:
5080 case DEMANGLE_COMPONENT_COMPLEX:
5081 case DEMANGLE_COMPONENT_IMAGINARY:
5082 FNQUAL_COMPONENT_CASE:
5083 modifier:
5084 {
5085 /* We keep a list of modifiers on the stack. */
5086 struct d_print_mod dpm;
5087
5088 dpm.next = dpi->modifiers;
5089 dpi->modifiers = &dpm;
5090 dpm.mod = dc;
5091 dpm.printed = 0;
5092 dpm.templates = dpi->templates;
5093
5094 if (!mod_inner)
5095 mod_inner = d_left (dc);
5096
5097 d_print_comp (dpi, options, mod_inner);
5098
5099 /* If the modifier didn't get printed by the type, print it
5100 now. */
5101 if (! dpm.printed)
5102 d_print_mod (dpi, options, dc);
5103
5104 dpi->modifiers = dpm.next;
5105
5106 if (need_template_restore)
5107 dpi->templates = saved_templates;
5108
5109 return;
5110 }
5111
5112 case DEMANGLE_COMPONENT_BUILTIN_TYPE:
5113 if ((options & DMGL_JAVA) == 0)
5114 d_append_buffer (dpi, dc->u.s_builtin.type->name,
5115 dc->u.s_builtin.type->len);
5116 else
5117 d_append_buffer (dpi, dc->u.s_builtin.type->java_name,
5118 dc->u.s_builtin.type->java_len);
5119 return;
5120
5121 case DEMANGLE_COMPONENT_VENDOR_TYPE:
5122 d_print_comp (dpi, options, d_left (dc));
5123 return;
5124
5125 case DEMANGLE_COMPONENT_FUNCTION_TYPE:
5126 {
5127 if ((options & DMGL_RET_POSTFIX) != 0)
5128 d_print_function_type (dpi,
5129 options & ~(DMGL_RET_POSTFIX | DMGL_RET_DROP),
5130 dc, dpi->modifiers);
5131
5132 /* Print return type if present */
5133 if (d_left (dc) != NULL && (options & DMGL_RET_POSTFIX) != 0)
5134 d_print_comp (dpi, options & ~(DMGL_RET_POSTFIX | DMGL_RET_DROP),
5135 d_left (dc));
5136 else if (d_left (dc) != NULL && (options & DMGL_RET_DROP) == 0)
5137 {
5138 struct d_print_mod dpm;
5139
5140 /* We must pass this type down as a modifier in order to
5141 print it in the right location. */
5142 dpm.next = dpi->modifiers;
5143 dpi->modifiers = &dpm;
5144 dpm.mod = dc;
5145 dpm.printed = 0;
5146 dpm.templates = dpi->templates;
5147
5148 d_print_comp (dpi, options & ~(DMGL_RET_POSTFIX | DMGL_RET_DROP),
5149 d_left (dc));
5150
5151 dpi->modifiers = dpm.next;
5152
5153 if (dpm.printed)
5154 return;
5155
5156 /* In standard prefix notation, there is a space between the
5157 return type and the function signature. */
5158 if ((options & DMGL_RET_POSTFIX) == 0)
5159 d_append_char (dpi, ' ');
5160 }
5161
5162 if ((options & DMGL_RET_POSTFIX) == 0)
5163 d_print_function_type (dpi,
5164 options & ~(DMGL_RET_POSTFIX | DMGL_RET_DROP),
5165 dc, dpi->modifiers);
5166
5167 return;
5168 }
5169
5170 case DEMANGLE_COMPONENT_ARRAY_TYPE:
5171 {
5172 struct d_print_mod *hold_modifiers;
5173 struct d_print_mod adpm[4];
5174 unsigned int i;
5175 struct d_print_mod *pdpm;
5176
5177 /* We must pass this type down as a modifier in order to print
5178 multi-dimensional arrays correctly. If the array itself is
5179 CV-qualified, we act as though the element type were
5180 CV-qualified. We do this by copying the modifiers down
5181 rather than fiddling pointers, so that we don't wind up
5182 with a d_print_mod higher on the stack pointing into our
5183 stack frame after we return. */
5184
5185 hold_modifiers = dpi->modifiers;
5186
5187 adpm[0].next = hold_modifiers;
5188 dpi->modifiers = &adpm[0];
5189 adpm[0].mod = dc;
5190 adpm[0].printed = 0;
5191 adpm[0].templates = dpi->templates;
5192
5193 i = 1;
5194 pdpm = hold_modifiers;
5195 while (pdpm != NULL
5196 && (pdpm->mod->type == DEMANGLE_COMPONENT_RESTRICT
5197 || pdpm->mod->type == DEMANGLE_COMPONENT_VOLATILE
5198 || pdpm->mod->type == DEMANGLE_COMPONENT_CONST))
5199 {
5200 if (! pdpm->printed)
5201 {
5202 if (i >= sizeof adpm / sizeof adpm[0])
5203 {
5204 d_print_error (dpi);
5205 return;
5206 }
5207
5208 adpm[i] = *pdpm;
5209 adpm[i].next = dpi->modifiers;
5210 dpi->modifiers = &adpm[i];
5211 pdpm->printed = 1;
5212 ++i;
5213 }
5214
5215 pdpm = pdpm->next;
5216 }
5217
5218 d_print_comp (dpi, options, d_right (dc));
5219
5220 dpi->modifiers = hold_modifiers;
5221
5222 if (adpm[0].printed)
5223 return;
5224
5225 while (i > 1)
5226 {
5227 --i;
5228 d_print_mod (dpi, options, adpm[i].mod);
5229 }
5230
5231 d_print_array_type (dpi, options, dc, dpi->modifiers);
5232
5233 return;
5234 }
5235
5236 case DEMANGLE_COMPONENT_PTRMEM_TYPE:
5237 case DEMANGLE_COMPONENT_VECTOR_TYPE:
5238 {
5239 struct d_print_mod dpm;
5240
5241 dpm.next = dpi->modifiers;
5242 dpi->modifiers = &dpm;
5243 dpm.mod = dc;
5244 dpm.printed = 0;
5245 dpm.templates = dpi->templates;
5246
5247 d_print_comp (dpi, options, d_right (dc));
5248
5249 /* If the modifier didn't get printed by the type, print it
5250 now. */
5251 if (! dpm.printed)
5252 d_print_mod (dpi, options, dc);
5253
5254 dpi->modifiers = dpm.next;
5255
5256 return;
5257 }
5258
5259 case DEMANGLE_COMPONENT_FIXED_TYPE:
5260 if (dc->u.s_fixed.sat)
5261 d_append_string (dpi, "_Sat ");
5262 /* Don't print "int _Accum". */
5263 if (dc->u.s_fixed.length->u.s_builtin.type
5264 != &cplus_demangle_builtin_types['i'-'a'])
5265 {
5266 d_print_comp (dpi, options, dc->u.s_fixed.length);
5267 d_append_char (dpi, ' ');
5268 }
5269 if (dc->u.s_fixed.accum)
5270 d_append_string (dpi, "_Accum");
5271 else
5272 d_append_string (dpi, "_Fract");
5273 return;
5274
5275 case DEMANGLE_COMPONENT_ARGLIST:
5276 case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST:
5277 if (d_left (dc) != NULL)
5278 d_print_comp (dpi, options, d_left (dc));
5279 if (d_right (dc) != NULL)
5280 {
5281 size_t len;
5282 unsigned long int flush_count;
5283 /* Make sure ", " isn't flushed by d_append_string, otherwise
5284 dpi->len -= 2 wouldn't work. */
5285 if (dpi->len >= sizeof (dpi->buf) - 2)
5286 d_print_flush (dpi);
5287 d_append_string (dpi, ", ");
5288 len = dpi->len;
5289 flush_count = dpi->flush_count;
5290 d_print_comp (dpi, options, d_right (dc));
5291 /* If that didn't print anything (which can happen with empty
5292 template argument packs), remove the comma and space. */
5293 if (dpi->flush_count == flush_count && dpi->len == len)
5294 dpi->len -= 2;
5295 }
5296 return;
5297
5298 case DEMANGLE_COMPONENT_INITIALIZER_LIST:
5299 {
5300 struct demangle_component *type = d_left (dc);
5301 struct demangle_component *list = d_right (dc);
5302
5303 if (type)
5304 d_print_comp (dpi, options, type);
5305 d_append_char (dpi, '{');
5306 d_print_comp (dpi, options, list);
5307 d_append_char (dpi, '}');
5308 }
5309 return;
5310
5311 case DEMANGLE_COMPONENT_OPERATOR:
5312 {
5313 const struct demangle_operator_info *op = dc->u.s_operator.op;
5314 int len = op->len;
5315
5316 d_append_string (dpi, "operator");
5317 /* Add a space before new/delete. */
5318 if (IS_LOWER (op->name[0]))
5319 d_append_char (dpi, ' ');
5320 /* Omit a trailing space. */
5321 if (op->name[len-1] == ' ')
5322 --len;
5323 d_append_buffer (dpi, op->name, len);
5324 return;
5325 }
5326
5327 case DEMANGLE_COMPONENT_EXTENDED_OPERATOR:
5328 d_append_string (dpi, "operator ");
5329 d_print_comp (dpi, options, dc->u.s_extended_operator.name);
5330 return;
5331
5332 case DEMANGLE_COMPONENT_CONVERSION:
5333 d_append_string (dpi, "operator ");
5334 d_print_conversion (dpi, options, dc);
5335 return;
5336
5337 case DEMANGLE_COMPONENT_NULLARY:
5338 d_print_expr_op (dpi, options, d_left (dc));
5339 return;
5340
5341 case DEMANGLE_COMPONENT_UNARY:
5342 {
5343 struct demangle_component *op = d_left (dc);
5344 struct demangle_component *operand = d_right (dc);
5345 const char *code = NULL;
5346
5347 if (op->type == DEMANGLE_COMPONENT_OPERATOR)
5348 {
5349 code = op->u.s_operator.op->code;
5350 if (!strcmp (code, "ad"))
5351 {
5352 /* Don't print the argument list for the address of a
5353 function. */
5354 if (operand->type == DEMANGLE_COMPONENT_TYPED_NAME
5355 && d_left (operand)->type == DEMANGLE_COMPONENT_QUAL_NAME
5356 && d_right (operand)->type == DEMANGLE_COMPONENT_FUNCTION_TYPE)
5357 operand = d_left (operand);
5358 }
5359 if (operand->type == DEMANGLE_COMPONENT_BINARY_ARGS)
5360 {
5361 /* This indicates a suffix operator. */
5362 operand = d_left (operand);
5363 d_print_subexpr (dpi, options, operand);
5364 d_print_expr_op (dpi, options, op);
5365 return;
5366 }
5367 }
5368
5369 /* For sizeof..., just print the pack length. */
5370 if (code && !strcmp (code, "sZ"))
5371 {
5372 struct demangle_component *a = d_find_pack (dpi, operand);
5373 int len = d_pack_length (a);
5374 d_append_num (dpi, len);
5375 return;
5376 }
5377 else if (code && !strcmp (code, "sP"))
5378 {
5379 int len = d_args_length (dpi, operand);
5380 d_append_num (dpi, len);
5381 return;
5382 }
5383
5384 if (op->type != DEMANGLE_COMPONENT_CAST)
5385 d_print_expr_op (dpi, options, op);
5386 else
5387 {
5388 d_append_char (dpi, '(');
5389 d_print_cast (dpi, options, op);
5390 d_append_char (dpi, ')');
5391 }
5392 if (code && !strcmp (code, "gs"))
5393 /* Avoid parens after '::'. */
5394 d_print_comp (dpi, options, operand);
5395 else if (code && !strcmp (code, "st"))
5396 /* Always print parens for sizeof (type). */
5397 {
5398 d_append_char (dpi, '(');
5399 d_print_comp (dpi, options, operand);
5400 d_append_char (dpi, ')');
5401 }
5402 else
5403 d_print_subexpr (dpi, options, operand);
5404 }
5405 return;
5406
5407 case DEMANGLE_COMPONENT_BINARY:
5408 if (d_right (dc)->type != DEMANGLE_COMPONENT_BINARY_ARGS)
5409 {
5410 d_print_error (dpi);
5411 return;
5412 }
5413
5414 if (op_is_new_cast (d_left (dc)))
5415 {
5416 d_print_expr_op (dpi, options, d_left (dc));
5417 d_append_char (dpi, '<');
5418 d_print_comp (dpi, options, d_left (d_right (dc)));
5419 d_append_string (dpi, ">(");
5420 d_print_comp (dpi, options, d_right (d_right (dc)));
5421 d_append_char (dpi, ')');
5422 return;
5423 }
5424
5425 if (d_maybe_print_fold_expression (dpi, options, dc))
5426 return;
5427
5428 /* We wrap an expression which uses the greater-than operator in
5429 an extra layer of parens so that it does not get confused
5430 with the '>' which ends the template parameters. */
5431 if (d_left (dc)->type == DEMANGLE_COMPONENT_OPERATOR
5432 && d_left (dc)->u.s_operator.op->len == 1
5433 && d_left (dc)->u.s_operator.op->name[0] == '>')
5434 d_append_char (dpi, '(');
5435
5436 if (strcmp (d_left (dc)->u.s_operator.op->code, "cl") == 0
5437 && d_left (d_right (dc))->type == DEMANGLE_COMPONENT_TYPED_NAME)
5438 {
5439 /* Function call used in an expression should not have printed types
5440 of the function arguments. Values of the function arguments still
5441 get printed below. */
5442
5443 const struct demangle_component *func = d_left (d_right (dc));
5444
5445 if (d_right (func)->type != DEMANGLE_COMPONENT_FUNCTION_TYPE)
5446 d_print_error (dpi);
5447 d_print_subexpr (dpi, options, d_left (func));
5448 }
5449 else
5450 d_print_subexpr (dpi, options, d_left (d_right (dc)));
5451 if (strcmp (d_left (dc)->u.s_operator.op->code, "ix") == 0)
5452 {
5453 d_append_char (dpi, '[');
5454 d_print_comp (dpi, options, d_right (d_right (dc)));
5455 d_append_char (dpi, ']');
5456 }
5457 else
5458 {
5459 if (strcmp (d_left (dc)->u.s_operator.op->code, "cl") != 0)
5460 d_print_expr_op (dpi, options, d_left (dc));
5461 d_print_subexpr (dpi, options, d_right (d_right (dc)));
5462 }
5463
5464 if (d_left (dc)->type == DEMANGLE_COMPONENT_OPERATOR
5465 && d_left (dc)->u.s_operator.op->len == 1
5466 && d_left (dc)->u.s_operator.op->name[0] == '>')
5467 d_append_char (dpi, ')');
5468
5469 return;
5470
5471 case DEMANGLE_COMPONENT_BINARY_ARGS:
5472 /* We should only see this as part of DEMANGLE_COMPONENT_BINARY. */
5473 d_print_error (dpi);
5474 return;
5475
5476 case DEMANGLE_COMPONENT_TRINARY:
5477 if (d_right (dc)->type != DEMANGLE_COMPONENT_TRINARY_ARG1
5478 || d_right (d_right (dc))->type != DEMANGLE_COMPONENT_TRINARY_ARG2)
5479 {
5480 d_print_error (dpi);
5481 return;
5482 }
5483 if (d_maybe_print_fold_expression (dpi, options, dc))
5484 return;
5485 {
5486 struct demangle_component *op = d_left (dc);
5487 struct demangle_component *first = d_left (d_right (dc));
5488 struct demangle_component *second = d_left (d_right (d_right (dc)));
5489 struct demangle_component *third = d_right (d_right (d_right (dc)));
5490
5491 if (!strcmp (op->u.s_operator.op->code, "qu"))
5492 {
5493 d_print_subexpr (dpi, options, first);
5494 d_print_expr_op (dpi, options, op);
5495 d_print_subexpr (dpi, options, second);
5496 d_append_string (dpi, " : ");
5497 d_print_subexpr (dpi, options, third);
5498 }
5499 else
5500 {
5501 d_append_string (dpi, "new ");
5502 if (d_left (first) != NULL)
5503 {
5504 d_print_subexpr (dpi, options, first);
5505 d_append_char (dpi, ' ');
5506 }
5507 d_print_comp (dpi, options, second);
5508 if (third)
5509 d_print_subexpr (dpi, options, third);
5510 }
5511 }
5512 return;
5513
5514 case DEMANGLE_COMPONENT_TRINARY_ARG1:
5515 case DEMANGLE_COMPONENT_TRINARY_ARG2:
5516 /* We should only see these are part of DEMANGLE_COMPONENT_TRINARY. */
5517 d_print_error (dpi);
5518 return;
5519
5520 case DEMANGLE_COMPONENT_LITERAL:
5521 case DEMANGLE_COMPONENT_LITERAL_NEG:
5522 {
5523 enum d_builtin_type_print tp;
5524
5525 /* For some builtin types, produce simpler output. */
5526 tp = D_PRINT_DEFAULT;
5527 if (d_left (dc)->type == DEMANGLE_COMPONENT_BUILTIN_TYPE)
5528 {
5529 tp = d_left (dc)->u.s_builtin.type->print;
5530 switch (tp)
5531 {
5532 case D_PRINT_INT:
5533 case D_PRINT_UNSIGNED:
5534 case D_PRINT_LONG:
5535 case D_PRINT_UNSIGNED_LONG:
5536 case D_PRINT_LONG_LONG:
5537 case D_PRINT_UNSIGNED_LONG_LONG:
5538 if (d_right (dc)->type == DEMANGLE_COMPONENT_NAME)
5539 {
5540 if (dc->type == DEMANGLE_COMPONENT_LITERAL_NEG)
5541 d_append_char (dpi, '-');
5542 d_print_comp (dpi, options, d_right (dc));
5543 switch (tp)
5544 {
5545 default:
5546 break;
5547 case D_PRINT_UNSIGNED:
5548 d_append_char (dpi, 'u');
5549 break;
5550 case D_PRINT_LONG:
5551 d_append_char (dpi, 'l');
5552 break;
5553 case D_PRINT_UNSIGNED_LONG:
5554 d_append_string (dpi, "ul");
5555 break;
5556 case D_PRINT_LONG_LONG:
5557 d_append_string (dpi, "ll");
5558 break;
5559 case D_PRINT_UNSIGNED_LONG_LONG:
5560 d_append_string (dpi, "ull");
5561 break;
5562 }
5563 return;
5564 }
5565 break;
5566
5567 case D_PRINT_BOOL:
5568 if (d_right (dc)->type == DEMANGLE_COMPONENT_NAME
5569 && d_right (dc)->u.s_name.len == 1
5570 && dc->type == DEMANGLE_COMPONENT_LITERAL)
5571 {
5572 switch (d_right (dc)->u.s_name.s[0])
5573 {
5574 case '0':
5575 d_append_string (dpi, "false");
5576 return;
5577 case '1':
5578 d_append_string (dpi, "true");
5579 return;
5580 default:
5581 break;
5582 }
5583 }
5584 break;
5585
5586 default:
5587 break;
5588 }
5589 }
5590
5591 d_append_char (dpi, '(');
5592 d_print_comp (dpi, options, d_left (dc));
5593 d_append_char (dpi, ')');
5594 if (dc->type == DEMANGLE_COMPONENT_LITERAL_NEG)
5595 d_append_char (dpi, '-');
5596 if (tp == D_PRINT_FLOAT)
5597 d_append_char (dpi, '[');
5598 d_print_comp (dpi, options, d_right (dc));
5599 if (tp == D_PRINT_FLOAT)
5600 d_append_char (dpi, ']');
5601 }
5602 return;
5603
5604 case DEMANGLE_COMPONENT_NUMBER:
5605 d_append_num (dpi, dc->u.s_number.number);
5606 return;
5607
5608 case DEMANGLE_COMPONENT_JAVA_RESOURCE:
5609 d_append_string (dpi, "java resource ");
5610 d_print_comp (dpi, options, d_left (dc));
5611 return;
5612
5613 case DEMANGLE_COMPONENT_COMPOUND_NAME:
5614 d_print_comp (dpi, options, d_left (dc));
5615 d_print_comp (dpi, options, d_right (dc));
5616 return;
5617
5618 case DEMANGLE_COMPONENT_CHARACTER:
5619 d_append_char (dpi, dc->u.s_character.character);
5620 return;
5621
5622 case DEMANGLE_COMPONENT_DECLTYPE:
5623 d_append_string (dpi, "decltype (");
5624 d_print_comp (dpi, options, d_left (dc));
5625 d_append_char (dpi, ')');
5626 return;
5627
5628 case DEMANGLE_COMPONENT_PACK_EXPANSION:
5629 {
5630 int len;
5631 int i;
5632 struct demangle_component *a = d_find_pack (dpi, d_left (dc));
5633 if (a == NULL)
5634 {
5635 /* d_find_pack won't find anything if the only packs involved
5636 in this expansion are function parameter packs; in that
5637 case, just print the pattern and "...". */
5638 d_print_subexpr (dpi, options, d_left (dc));
5639 d_append_string (dpi, "...");
5640 return;
5641 }
5642
5643 len = d_pack_length (a);
5644 dc = d_left (dc);
5645 for (i = 0; i < len; ++i)
5646 {
5647 dpi->pack_index = i;
5648 d_print_comp (dpi, options, dc);
5649 if (i < len-1)
5650 d_append_string (dpi, ", ");
5651 }
5652 }
5653 return;
5654
5655 case DEMANGLE_COMPONENT_FUNCTION_PARAM:
5656 {
5657 long num = dc->u.s_number.number;
5658 if (num == 0)
5659 d_append_string (dpi, "this");
5660 else
5661 {
5662 d_append_string (dpi, "{parm#");
5663 d_append_num (dpi, num);
5664 d_append_char (dpi, '}');
5665 }
5666 }
5667 return;
5668
5669 case DEMANGLE_COMPONENT_GLOBAL_CONSTRUCTORS:
5670 d_append_string (dpi, "global constructors keyed to ");
5671 d_print_comp (dpi, options, dc->u.s_binary.left);
5672 return;
5673
5674 case DEMANGLE_COMPONENT_GLOBAL_DESTRUCTORS:
5675 d_append_string (dpi, "global destructors keyed to ");
5676 d_print_comp (dpi, options, dc->u.s_binary.left);
5677 return;
5678
5679 case DEMANGLE_COMPONENT_LAMBDA:
5680 d_append_string (dpi, "{lambda(");
5681 /* Generic lambda auto parms are mangled as the template type
5682 parm they are. */
5683 dpi->is_lambda_arg++;
5684 d_print_comp (dpi, options, dc->u.s_unary_num.sub);
5685 dpi->is_lambda_arg--;
5686 d_append_string (dpi, ")#");
5687 d_append_num (dpi, dc->u.s_unary_num.num + 1);
5688 d_append_char (dpi, '}');
5689 return;
5690
5691 case DEMANGLE_COMPONENT_UNNAMED_TYPE:
5692 d_append_string (dpi, "{unnamed type#");
5693 d_append_num (dpi, dc->u.s_number.number + 1);
5694 d_append_char (dpi, '}');
5695 return;
5696
5697 case DEMANGLE_COMPONENT_CLONE:
5698 d_print_comp (dpi, options, d_left (dc));
5699 d_append_string (dpi, " [clone ");
5700 d_print_comp (dpi, options, d_right (dc));
5701 d_append_char (dpi, ']');
5702 return;
5703
5704 default:
5705 d_print_error (dpi);
5706 return;
5707 }
5708 }
5709
5710 static void
d_print_comp(struct d_print_info * dpi,int options,struct demangle_component * dc)5711 d_print_comp (struct d_print_info *dpi, int options,
5712 struct demangle_component *dc)
5713 {
5714 struct d_component_stack self;
5715 if (dc == NULL || dc->d_printing > 1 || dpi->recursion > MAX_RECURSION_COUNT)
5716 {
5717 d_print_error (dpi);
5718 return;
5719 }
5720
5721 dc->d_printing++;
5722 dpi->recursion++;
5723
5724 self.dc = dc;
5725 self.parent = dpi->component_stack;
5726 dpi->component_stack = &self;
5727
5728 d_print_comp_inner (dpi, options, dc);
5729
5730 dpi->component_stack = self.parent;
5731 dc->d_printing--;
5732 dpi->recursion--;
5733 }
5734
5735 /* Print a Java dentifier. For Java we try to handle encoded extended
5736 Unicode characters. The C++ ABI doesn't mention Unicode encoding,
5737 so we don't it for C++. Characters are encoded as
5738 __U<hex-char>+_. */
5739
5740 static void
d_print_java_identifier(struct d_print_info * dpi,const char * name,int len)5741 d_print_java_identifier (struct d_print_info *dpi, const char *name, int len)
5742 {
5743 const char *p;
5744 const char *end;
5745
5746 end = name + len;
5747 for (p = name; p < end; ++p)
5748 {
5749 if (end - p > 3
5750 && p[0] == '_'
5751 && p[1] == '_'
5752 && p[2] == 'U')
5753 {
5754 unsigned long c;
5755 const char *q;
5756
5757 c = 0;
5758 for (q = p + 3; q < end; ++q)
5759 {
5760 int dig;
5761
5762 if (IS_DIGIT (*q))
5763 dig = *q - '0';
5764 else if (*q >= 'A' && *q <= 'F')
5765 dig = *q - 'A' + 10;
5766 else if (*q >= 'a' && *q <= 'f')
5767 dig = *q - 'a' + 10;
5768 else
5769 break;
5770
5771 c = c * 16 + dig;
5772 }
5773 /* If the Unicode character is larger than 256, we don't try
5774 to deal with it here. FIXME. */
5775 if (q < end && *q == '_' && c < 256)
5776 {
5777 d_append_char (dpi, c);
5778 p = q;
5779 continue;
5780 }
5781 }
5782
5783 d_append_char (dpi, *p);
5784 }
5785 }
5786
5787 /* Print a list of modifiers. SUFFIX is 1 if we are printing
5788 qualifiers on this after printing a function. */
5789
5790 static void
d_print_mod_list(struct d_print_info * dpi,int options,struct d_print_mod * mods,int suffix)5791 d_print_mod_list (struct d_print_info *dpi, int options,
5792 struct d_print_mod *mods, int suffix)
5793 {
5794 struct d_print_template *hold_dpt;
5795
5796 if (mods == NULL || d_print_saw_error (dpi))
5797 return;
5798
5799 if (mods->printed
5800 || (! suffix
5801 && (is_fnqual_component_type (mods->mod->type))))
5802 {
5803 d_print_mod_list (dpi, options, mods->next, suffix);
5804 return;
5805 }
5806
5807 mods->printed = 1;
5808
5809 hold_dpt = dpi->templates;
5810 dpi->templates = mods->templates;
5811
5812 if (mods->mod->type == DEMANGLE_COMPONENT_FUNCTION_TYPE)
5813 {
5814 d_print_function_type (dpi, options, mods->mod, mods->next);
5815 dpi->templates = hold_dpt;
5816 return;
5817 }
5818 else if (mods->mod->type == DEMANGLE_COMPONENT_ARRAY_TYPE)
5819 {
5820 d_print_array_type (dpi, options, mods->mod, mods->next);
5821 dpi->templates = hold_dpt;
5822 return;
5823 }
5824 else if (mods->mod->type == DEMANGLE_COMPONENT_LOCAL_NAME)
5825 {
5826 struct d_print_mod *hold_modifiers;
5827 struct demangle_component *dc;
5828
5829 /* When this is on the modifier stack, we have pulled any
5830 qualifiers off the right argument already. Otherwise, we
5831 print it as usual, but don't let the left argument see any
5832 modifiers. */
5833
5834 hold_modifiers = dpi->modifiers;
5835 dpi->modifiers = NULL;
5836 d_print_comp (dpi, options, d_left (mods->mod));
5837 dpi->modifiers = hold_modifiers;
5838
5839 if ((options & DMGL_JAVA) == 0)
5840 d_append_string (dpi, "::");
5841 else
5842 d_append_char (dpi, '.');
5843
5844 dc = d_right (mods->mod);
5845
5846 if (dc->type == DEMANGLE_COMPONENT_DEFAULT_ARG)
5847 {
5848 d_append_string (dpi, "{default arg#");
5849 d_append_num (dpi, dc->u.s_unary_num.num + 1);
5850 d_append_string (dpi, "}::");
5851 dc = dc->u.s_unary_num.sub;
5852 }
5853
5854 while (is_fnqual_component_type (dc->type))
5855 dc = d_left (dc);
5856
5857 d_print_comp (dpi, options, dc);
5858
5859 dpi->templates = hold_dpt;
5860 return;
5861 }
5862
5863 d_print_mod (dpi, options, mods->mod);
5864
5865 dpi->templates = hold_dpt;
5866
5867 d_print_mod_list (dpi, options, mods->next, suffix);
5868 }
5869
5870 /* Print a modifier. */
5871
5872 static void
d_print_mod(struct d_print_info * dpi,int options,struct demangle_component * mod)5873 d_print_mod (struct d_print_info *dpi, int options,
5874 struct demangle_component *mod)
5875 {
5876 switch (mod->type)
5877 {
5878 case DEMANGLE_COMPONENT_RESTRICT:
5879 case DEMANGLE_COMPONENT_RESTRICT_THIS:
5880 d_append_string (dpi, " restrict");
5881 return;
5882 case DEMANGLE_COMPONENT_VOLATILE:
5883 case DEMANGLE_COMPONENT_VOLATILE_THIS:
5884 d_append_string (dpi, " volatile");
5885 return;
5886 case DEMANGLE_COMPONENT_CONST:
5887 case DEMANGLE_COMPONENT_CONST_THIS:
5888 d_append_string (dpi, " const");
5889 return;
5890 case DEMANGLE_COMPONENT_TRANSACTION_SAFE:
5891 d_append_string (dpi, " transaction_safe");
5892 return;
5893 case DEMANGLE_COMPONENT_NOEXCEPT:
5894 d_append_string (dpi, " noexcept");
5895 if (d_right (mod))
5896 {
5897 d_append_char (dpi, '(');
5898 d_print_comp (dpi, options, d_right (mod));
5899 d_append_char (dpi, ')');
5900 }
5901 return;
5902 case DEMANGLE_COMPONENT_THROW_SPEC:
5903 d_append_string (dpi, " throw");
5904 if (d_right (mod))
5905 {
5906 d_append_char (dpi, '(');
5907 d_print_comp (dpi, options, d_right (mod));
5908 d_append_char (dpi, ')');
5909 }
5910 return;
5911 case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
5912 d_append_char (dpi, ' ');
5913 d_print_comp (dpi, options, d_right (mod));
5914 return;
5915 case DEMANGLE_COMPONENT_POINTER:
5916 /* There is no pointer symbol in Java. */
5917 if ((options & DMGL_JAVA) == 0)
5918 d_append_char (dpi, '*');
5919 return;
5920 case DEMANGLE_COMPONENT_REFERENCE_THIS:
5921 /* For the ref-qualifier, put a space before the &. */
5922 d_append_char (dpi, ' ');
5923 /* FALLTHRU */
5924 case DEMANGLE_COMPONENT_REFERENCE:
5925 d_append_char (dpi, '&');
5926 return;
5927 case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS:
5928 d_append_char (dpi, ' ');
5929 /* FALLTHRU */
5930 case DEMANGLE_COMPONENT_RVALUE_REFERENCE:
5931 d_append_string (dpi, "&&");
5932 return;
5933 case DEMANGLE_COMPONENT_COMPLEX:
5934 d_append_string (dpi, "complex ");
5935 return;
5936 case DEMANGLE_COMPONENT_IMAGINARY:
5937 d_append_string (dpi, "imaginary ");
5938 return;
5939 case DEMANGLE_COMPONENT_PTRMEM_TYPE:
5940 if (d_last_char (dpi) != '(')
5941 d_append_char (dpi, ' ');
5942 d_print_comp (dpi, options, d_left (mod));
5943 d_append_string (dpi, "::*");
5944 return;
5945 case DEMANGLE_COMPONENT_TYPED_NAME:
5946 d_print_comp (dpi, options, d_left (mod));
5947 return;
5948 case DEMANGLE_COMPONENT_VECTOR_TYPE:
5949 d_append_string (dpi, " __vector(");
5950 d_print_comp (dpi, options, d_left (mod));
5951 d_append_char (dpi, ')');
5952 return;
5953
5954 default:
5955 /* Otherwise, we have something that won't go back on the
5956 modifier stack, so we can just print it. */
5957 d_print_comp (dpi, options, mod);
5958 return;
5959 }
5960 }
5961
5962 /* Print a function type, except for the return type. */
5963
5964 static void
d_print_function_type(struct d_print_info * dpi,int options,struct demangle_component * dc,struct d_print_mod * mods)5965 d_print_function_type (struct d_print_info *dpi, int options,
5966 struct demangle_component *dc,
5967 struct d_print_mod *mods)
5968 {
5969 int need_paren;
5970 int need_space;
5971 struct d_print_mod *p;
5972 struct d_print_mod *hold_modifiers;
5973
5974 need_paren = 0;
5975 need_space = 0;
5976 for (p = mods; p != NULL; p = p->next)
5977 {
5978 if (p->printed)
5979 break;
5980
5981 switch (p->mod->type)
5982 {
5983 case DEMANGLE_COMPONENT_POINTER:
5984 case DEMANGLE_COMPONENT_REFERENCE:
5985 case DEMANGLE_COMPONENT_RVALUE_REFERENCE:
5986 need_paren = 1;
5987 break;
5988 case DEMANGLE_COMPONENT_RESTRICT:
5989 case DEMANGLE_COMPONENT_VOLATILE:
5990 case DEMANGLE_COMPONENT_CONST:
5991 case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
5992 case DEMANGLE_COMPONENT_COMPLEX:
5993 case DEMANGLE_COMPONENT_IMAGINARY:
5994 case DEMANGLE_COMPONENT_PTRMEM_TYPE:
5995 need_space = 1;
5996 need_paren = 1;
5997 break;
5998 FNQUAL_COMPONENT_CASE:
5999 break;
6000 default:
6001 break;
6002 }
6003 if (need_paren)
6004 break;
6005 }
6006
6007 if (need_paren)
6008 {
6009 if (! need_space)
6010 {
6011 if (d_last_char (dpi) != '('
6012 && d_last_char (dpi) != '*')
6013 need_space = 1;
6014 }
6015 if (need_space && d_last_char (dpi) != ' ')
6016 d_append_char (dpi, ' ');
6017 d_append_char (dpi, '(');
6018 }
6019
6020 hold_modifiers = dpi->modifiers;
6021 dpi->modifiers = NULL;
6022
6023 d_print_mod_list (dpi, options, mods, 0);
6024
6025 if (need_paren)
6026 d_append_char (dpi, ')');
6027
6028 d_append_char (dpi, '(');
6029
6030 if (d_right (dc) != NULL)
6031 d_print_comp (dpi, options, d_right (dc));
6032
6033 d_append_char (dpi, ')');
6034
6035 d_print_mod_list (dpi, options, mods, 1);
6036
6037 dpi->modifiers = hold_modifiers;
6038 }
6039
6040 /* Print an array type, except for the element type. */
6041
6042 static void
d_print_array_type(struct d_print_info * dpi,int options,struct demangle_component * dc,struct d_print_mod * mods)6043 d_print_array_type (struct d_print_info *dpi, int options,
6044 struct demangle_component *dc,
6045 struct d_print_mod *mods)
6046 {
6047 int need_space;
6048
6049 need_space = 1;
6050 if (mods != NULL)
6051 {
6052 int need_paren;
6053 struct d_print_mod *p;
6054
6055 need_paren = 0;
6056 for (p = mods; p != NULL; p = p->next)
6057 {
6058 if (! p->printed)
6059 {
6060 if (p->mod->type == DEMANGLE_COMPONENT_ARRAY_TYPE)
6061 {
6062 need_space = 0;
6063 break;
6064 }
6065 else
6066 {
6067 need_paren = 1;
6068 need_space = 1;
6069 break;
6070 }
6071 }
6072 }
6073
6074 if (need_paren)
6075 d_append_string (dpi, " (");
6076
6077 d_print_mod_list (dpi, options, mods, 0);
6078
6079 if (need_paren)
6080 d_append_char (dpi, ')');
6081 }
6082
6083 if (need_space)
6084 d_append_char (dpi, ' ');
6085
6086 d_append_char (dpi, '[');
6087
6088 if (d_left (dc) != NULL)
6089 d_print_comp (dpi, options, d_left (dc));
6090
6091 d_append_char (dpi, ']');
6092 }
6093
6094 /* Print an operator in an expression. */
6095
6096 static void
d_print_expr_op(struct d_print_info * dpi,int options,struct demangle_component * dc)6097 d_print_expr_op (struct d_print_info *dpi, int options,
6098 struct demangle_component *dc)
6099 {
6100 if (dc->type == DEMANGLE_COMPONENT_OPERATOR)
6101 d_append_buffer (dpi, dc->u.s_operator.op->name,
6102 dc->u.s_operator.op->len);
6103 else
6104 d_print_comp (dpi, options, dc);
6105 }
6106
6107 /* Print a cast. */
6108
6109 static void
d_print_cast(struct d_print_info * dpi,int options,struct demangle_component * dc)6110 d_print_cast (struct d_print_info *dpi, int options,
6111 struct demangle_component *dc)
6112 {
6113 d_print_comp (dpi, options, d_left (dc));
6114 }
6115
6116 /* Print a conversion operator. */
6117
6118 static void
d_print_conversion(struct d_print_info * dpi,int options,struct demangle_component * dc)6119 d_print_conversion (struct d_print_info *dpi, int options,
6120 struct demangle_component *dc)
6121 {
6122 struct d_print_template dpt;
6123
6124 /* For a conversion operator, we need the template parameters from
6125 the enclosing template in scope for processing the type. */
6126 if (dpi->current_template != NULL)
6127 {
6128 dpt.next = dpi->templates;
6129 dpi->templates = &dpt;
6130 dpt.template_decl = dpi->current_template;
6131 }
6132
6133 if (d_left (dc)->type != DEMANGLE_COMPONENT_TEMPLATE)
6134 {
6135 d_print_comp (dpi, options, d_left (dc));
6136 if (dpi->current_template != NULL)
6137 dpi->templates = dpt.next;
6138 }
6139 else
6140 {
6141 d_print_comp (dpi, options, d_left (d_left (dc)));
6142
6143 /* For a templated cast operator, we need to remove the template
6144 parameters from scope after printing the operator name,
6145 so we need to handle the template printing here. */
6146 if (dpi->current_template != NULL)
6147 dpi->templates = dpt.next;
6148
6149 if (d_last_char (dpi) == '<')
6150 d_append_char (dpi, ' ');
6151 d_append_char (dpi, '<');
6152 d_print_comp (dpi, options, d_right (d_left (dc)));
6153 /* Avoid generating two consecutive '>' characters, to avoid
6154 the C++ syntactic ambiguity. */
6155 if (d_last_char (dpi) == '>')
6156 d_append_char (dpi, ' ');
6157 d_append_char (dpi, '>');
6158 }
6159 }
6160
6161 /* Initialize the information structure we use to pass around
6162 information. */
6163
6164 CP_STATIC_IF_GLIBCPP_V3
6165 void
cplus_demangle_init_info(const char * mangled,int options,size_t len,struct d_info * di)6166 cplus_demangle_init_info (const char *mangled, int options, size_t len,
6167 struct d_info *di)
6168 {
6169 di->s = mangled;
6170 di->send = mangled + len;
6171 di->options = options;
6172
6173 di->n = mangled;
6174
6175 /* We can not need more components than twice the number of chars in
6176 the mangled string. Most components correspond directly to
6177 chars, but the ARGLIST types are exceptions. */
6178 di->num_comps = 2 * len;
6179 di->next_comp = 0;
6180
6181 /* Similarly, we can not need more substitutions than there are
6182 chars in the mangled string. */
6183 di->num_subs = len;
6184 di->next_sub = 0;
6185
6186 di->last_name = NULL;
6187
6188 di->expansion = 0;
6189 di->is_expression = 0;
6190 di->is_conversion = 0;
6191 }
6192
6193 /* Internal implementation for the demangler. If MANGLED is a g++ v3 ABI
6194 mangled name, return strings in repeated callback giving the demangled
6195 name. OPTIONS is the usual libiberty demangler options. On success,
6196 this returns 1. On failure, returns 0. */
6197
6198 static int
d_demangle_callback(const char * mangled,int options,demangle_callbackref callback,void * opaque)6199 d_demangle_callback (const char *mangled, int options,
6200 demangle_callbackref callback, void *opaque)
6201 {
6202 enum
6203 {
6204 DCT_TYPE,
6205 DCT_MANGLED,
6206 DCT_GLOBAL_CTORS,
6207 DCT_GLOBAL_DTORS
6208 }
6209 type;
6210 struct d_info di;
6211 struct demangle_component *dc;
6212 int status;
6213
6214 if (mangled[0] == '_' && mangled[1] == 'Z')
6215 type = DCT_MANGLED;
6216 else if (strncmp (mangled, "_GLOBAL_", 8) == 0
6217 && (mangled[8] == '.' || mangled[8] == '_' || mangled[8] == '$')
6218 && (mangled[9] == 'D' || mangled[9] == 'I')
6219 && mangled[10] == '_')
6220 type = mangled[9] == 'I' ? DCT_GLOBAL_CTORS : DCT_GLOBAL_DTORS;
6221 else
6222 {
6223 if ((options & DMGL_TYPES) == 0)
6224 return 0;
6225 type = DCT_TYPE;
6226 }
6227
6228 cplus_demangle_init_info (mangled, options, strlen (mangled), &di);
6229
6230 {
6231 #ifdef CP_DYNAMIC_ARRAYS
6232 __extension__ struct demangle_component comps[di.num_comps];
6233 __extension__ struct demangle_component *subs[di.num_subs];
6234
6235 di.comps = comps;
6236 di.subs = subs;
6237 #else
6238 di.comps = alloca (di.num_comps * sizeof (*di.comps));
6239 di.subs = alloca (di.num_subs * sizeof (*di.subs));
6240 #endif
6241
6242 switch (type)
6243 {
6244 case DCT_TYPE:
6245 dc = cplus_demangle_type (&di);
6246 break;
6247 case DCT_MANGLED:
6248 dc = cplus_demangle_mangled_name (&di, 1);
6249 break;
6250 case DCT_GLOBAL_CTORS:
6251 case DCT_GLOBAL_DTORS:
6252 d_advance (&di, 11);
6253 dc = d_make_comp (&di,
6254 (type == DCT_GLOBAL_CTORS
6255 ? DEMANGLE_COMPONENT_GLOBAL_CONSTRUCTORS
6256 : DEMANGLE_COMPONENT_GLOBAL_DESTRUCTORS),
6257 d_make_demangle_mangled_name (&di, d_str (&di)),
6258 NULL);
6259 d_advance (&di, strlen (d_str (&di)));
6260 break;
6261 default:
6262 abort (); /* We have listed all the cases. */
6263 }
6264
6265 /* If DMGL_PARAMS is set, then if we didn't consume the entire
6266 mangled string, then we didn't successfully demangle it. If
6267 DMGL_PARAMS is not set, we didn't look at the trailing
6268 parameters. */
6269 if (((options & DMGL_PARAMS) != 0) && d_peek_char (&di) != '\0')
6270 dc = NULL;
6271
6272 #ifdef CP_DEMANGLE_DEBUG
6273 d_dump (dc, 0);
6274 #endif
6275
6276 status = (dc != NULL)
6277 ? cplus_demangle_print_callback (options, dc, callback, opaque)
6278 : 0;
6279 }
6280
6281 return status;
6282 }
6283
6284 /* Entry point for the demangler. If MANGLED is a g++ v3 ABI mangled
6285 name, return a buffer allocated with malloc holding the demangled
6286 name. OPTIONS is the usual libiberty demangler options. On
6287 success, this sets *PALC to the allocated size of the returned
6288 buffer. On failure, this sets *PALC to 0 for a bad name, or 1 for
6289 a memory allocation failure, and returns NULL. */
6290
6291 static char *
d_demangle(const char * mangled,int options,size_t * palc)6292 d_demangle (const char *mangled, int options, size_t *palc)
6293 {
6294 struct d_growable_string dgs;
6295 int status;
6296
6297 d_growable_string_init (&dgs, 0);
6298
6299 status = d_demangle_callback (mangled, options,
6300 d_growable_string_callback_adapter, &dgs);
6301 if (status == 0)
6302 {
6303 free (dgs.buf);
6304 *palc = 0;
6305 return NULL;
6306 }
6307
6308 *palc = dgs.allocation_failure ? 1 : dgs.alc;
6309 return dgs.buf;
6310 }
6311
6312 #if defined(IN_LIBGCC2) || defined(IN_GLIBCPP_V3)
6313
6314 extern char *__cxa_demangle (const char *, char *, size_t *, int *);
6315
6316 /* ia64 ABI-mandated entry point in the C++ runtime library for
6317 performing demangling. MANGLED_NAME is a NUL-terminated character
6318 string containing the name to be demangled.
6319
6320 OUTPUT_BUFFER is a region of memory, allocated with malloc, of
6321 *LENGTH bytes, into which the demangled name is stored. If
6322 OUTPUT_BUFFER is not long enough, it is expanded using realloc.
6323 OUTPUT_BUFFER may instead be NULL; in that case, the demangled name
6324 is placed in a region of memory allocated with malloc.
6325
6326 If LENGTH is non-NULL, the length of the buffer containing the
6327 demangled name, is placed in *LENGTH.
6328
6329 The return value is a pointer to the start of the NUL-terminated
6330 demangled name, or NULL if the demangling fails. The caller is
6331 responsible for deallocating this memory using free.
6332
6333 *STATUS is set to one of the following values:
6334 0: The demangling operation succeeded.
6335 -1: A memory allocation failure occurred.
6336 -2: MANGLED_NAME is not a valid name under the C++ ABI mangling rules.
6337 -3: One of the arguments is invalid.
6338
6339 The demangling is performed using the C++ ABI mangling rules, with
6340 GNU extensions. */
6341
6342 char *
__cxa_demangle(const char * mangled_name,char * output_buffer,size_t * length,int * status)6343 __cxa_demangle (const char *mangled_name, char *output_buffer,
6344 size_t *length, int *status)
6345 {
6346 char *demangled;
6347 size_t alc;
6348
6349 if (mangled_name == NULL)
6350 {
6351 if (status != NULL)
6352 *status = -3;
6353 return NULL;
6354 }
6355
6356 if (output_buffer != NULL && length == NULL)
6357 {
6358 if (status != NULL)
6359 *status = -3;
6360 return NULL;
6361 }
6362
6363 demangled = d_demangle (mangled_name, DMGL_PARAMS | DMGL_TYPES, &alc);
6364
6365 if (demangled == NULL)
6366 {
6367 if (status != NULL)
6368 {
6369 if (alc == 1)
6370 *status = -1;
6371 else
6372 *status = -2;
6373 }
6374 return NULL;
6375 }
6376
6377 if (output_buffer == NULL)
6378 {
6379 if (length != NULL)
6380 *length = alc;
6381 }
6382 else
6383 {
6384 if (strlen (demangled) < *length)
6385 {
6386 strcpy (output_buffer, demangled);
6387 free (demangled);
6388 demangled = output_buffer;
6389 }
6390 else
6391 {
6392 free (output_buffer);
6393 *length = alc;
6394 }
6395 }
6396
6397 if (status != NULL)
6398 *status = 0;
6399
6400 return demangled;
6401 }
6402
6403 extern int __gcclibcxx_demangle_callback (const char *,
6404 void (*)
6405 (const char *, size_t, void *),
6406 void *);
6407
6408 /* Alternative, allocationless entry point in the C++ runtime library
6409 for performing demangling. MANGLED_NAME is a NUL-terminated character
6410 string containing the name to be demangled.
6411
6412 CALLBACK is a callback function, called with demangled string
6413 segments as demangling progresses; it is called at least once,
6414 but may be called more than once. OPAQUE is a generalized pointer
6415 used as a callback argument.
6416
6417 The return code is one of the following values, equivalent to
6418 the STATUS values of __cxa_demangle() (excluding -1, since this
6419 function performs no memory allocations):
6420 0: The demangling operation succeeded.
6421 -2: MANGLED_NAME is not a valid name under the C++ ABI mangling rules.
6422 -3: One of the arguments is invalid.
6423
6424 The demangling is performed using the C++ ABI mangling rules, with
6425 GNU extensions. */
6426
6427 int
__gcclibcxx_demangle_callback(const char * mangled_name,void (* callback)(const char *,size_t,void *),void * opaque)6428 __gcclibcxx_demangle_callback (const char *mangled_name,
6429 void (*callback) (const char *, size_t, void *),
6430 void *opaque)
6431 {
6432 int status;
6433
6434 if (mangled_name == NULL || callback == NULL)
6435 return -3;
6436
6437 status = d_demangle_callback (mangled_name, DMGL_PARAMS | DMGL_TYPES,
6438 callback, opaque);
6439 if (status == 0)
6440 return -2;
6441
6442 return 0;
6443 }
6444
6445 #else /* ! (IN_LIBGCC2 || IN_GLIBCPP_V3) */
6446
6447 /* Entry point for libiberty demangler. If MANGLED is a g++ v3 ABI
6448 mangled name, return a buffer allocated with malloc holding the
6449 demangled name. Otherwise, return NULL. */
6450
6451 char *
cplus_demangle_v3(const char * mangled,int options)6452 cplus_demangle_v3 (const char *mangled, int options)
6453 {
6454 size_t alc;
6455
6456 return d_demangle (mangled, options, &alc);
6457 }
6458
6459 int
cplus_demangle_v3_callback(const char * mangled,int options,demangle_callbackref callback,void * opaque)6460 cplus_demangle_v3_callback (const char *mangled, int options,
6461 demangle_callbackref callback, void *opaque)
6462 {
6463 return d_demangle_callback (mangled, options, callback, opaque);
6464 }
6465
6466 /* Demangle a Java symbol. Java uses a subset of the V3 ABI C++ mangling
6467 conventions, but the output formatting is a little different.
6468 This instructs the C++ demangler not to emit pointer characters ("*"), to
6469 use Java's namespace separator symbol ("." instead of "::"), and to output
6470 JArray<TYPE> as TYPE[]. */
6471
6472 char *
java_demangle_v3(const char * mangled)6473 java_demangle_v3 (const char *mangled)
6474 {
6475 size_t alc;
6476
6477 return d_demangle (mangled, DMGL_JAVA | DMGL_PARAMS | DMGL_RET_POSTFIX, &alc);
6478 }
6479
6480 int
java_demangle_v3_callback(const char * mangled,demangle_callbackref callback,void * opaque)6481 java_demangle_v3_callback (const char *mangled,
6482 demangle_callbackref callback, void *opaque)
6483 {
6484 return d_demangle_callback (mangled,
6485 DMGL_JAVA | DMGL_PARAMS | DMGL_RET_POSTFIX,
6486 callback, opaque);
6487 }
6488
6489 #endif /* IN_LIBGCC2 || IN_GLIBCPP_V3 */
6490
6491 #ifndef IN_GLIBCPP_V3
6492
6493 /* Demangle a string in order to find out whether it is a constructor
6494 or destructor. Return non-zero on success. Set *CTOR_KIND and
6495 *DTOR_KIND appropriately. */
6496
6497 static int
is_ctor_or_dtor(const char * mangled,enum gnu_v3_ctor_kinds * ctor_kind,enum gnu_v3_dtor_kinds * dtor_kind)6498 is_ctor_or_dtor (const char *mangled,
6499 enum gnu_v3_ctor_kinds *ctor_kind,
6500 enum gnu_v3_dtor_kinds *dtor_kind)
6501 {
6502 struct d_info di;
6503 struct demangle_component *dc;
6504 int ret;
6505
6506 *ctor_kind = (enum gnu_v3_ctor_kinds) 0;
6507 *dtor_kind = (enum gnu_v3_dtor_kinds) 0;
6508
6509 cplus_demangle_init_info (mangled, DMGL_GNU_V3, strlen (mangled), &di);
6510
6511 {
6512 #ifdef CP_DYNAMIC_ARRAYS
6513 __extension__ struct demangle_component comps[di.num_comps];
6514 __extension__ struct demangle_component *subs[di.num_subs];
6515
6516 di.comps = comps;
6517 di.subs = subs;
6518 #else
6519 di.comps = alloca (di.num_comps * sizeof (*di.comps));
6520 di.subs = alloca (di.num_subs * sizeof (*di.subs));
6521 #endif
6522
6523 dc = cplus_demangle_mangled_name (&di, 1);
6524
6525 /* Note that because we did not pass DMGL_PARAMS, we don't expect
6526 to demangle the entire string. */
6527
6528 ret = 0;
6529 while (dc != NULL)
6530 {
6531 switch (dc->type)
6532 {
6533 /* These cannot appear on a constructor or destructor. */
6534 case DEMANGLE_COMPONENT_RESTRICT_THIS:
6535 case DEMANGLE_COMPONENT_VOLATILE_THIS:
6536 case DEMANGLE_COMPONENT_CONST_THIS:
6537 case DEMANGLE_COMPONENT_REFERENCE_THIS:
6538 case DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS:
6539 default:
6540 dc = NULL;
6541 break;
6542 case DEMANGLE_COMPONENT_TYPED_NAME:
6543 case DEMANGLE_COMPONENT_TEMPLATE:
6544 dc = d_left (dc);
6545 break;
6546 case DEMANGLE_COMPONENT_QUAL_NAME:
6547 case DEMANGLE_COMPONENT_LOCAL_NAME:
6548 dc = d_right (dc);
6549 break;
6550 case DEMANGLE_COMPONENT_CTOR:
6551 *ctor_kind = dc->u.s_ctor.kind;
6552 ret = 1;
6553 dc = NULL;
6554 break;
6555 case DEMANGLE_COMPONENT_DTOR:
6556 *dtor_kind = dc->u.s_dtor.kind;
6557 ret = 1;
6558 dc = NULL;
6559 break;
6560 }
6561 }
6562 }
6563
6564 return ret;
6565 }
6566
6567 /* Return whether NAME is the mangled form of a g++ V3 ABI constructor
6568 name. A non-zero return indicates the type of constructor. */
6569
6570 enum gnu_v3_ctor_kinds
is_gnu_v3_mangled_ctor(const char * name)6571 is_gnu_v3_mangled_ctor (const char *name)
6572 {
6573 enum gnu_v3_ctor_kinds ctor_kind;
6574 enum gnu_v3_dtor_kinds dtor_kind;
6575
6576 if (! is_ctor_or_dtor (name, &ctor_kind, &dtor_kind))
6577 return (enum gnu_v3_ctor_kinds) 0;
6578 return ctor_kind;
6579 }
6580
6581
6582 /* Return whether NAME is the mangled form of a g++ V3 ABI destructor
6583 name. A non-zero return indicates the type of destructor. */
6584
6585 enum gnu_v3_dtor_kinds
is_gnu_v3_mangled_dtor(const char * name)6586 is_gnu_v3_mangled_dtor (const char *name)
6587 {
6588 enum gnu_v3_ctor_kinds ctor_kind;
6589 enum gnu_v3_dtor_kinds dtor_kind;
6590
6591 if (! is_ctor_or_dtor (name, &ctor_kind, &dtor_kind))
6592 return (enum gnu_v3_dtor_kinds) 0;
6593 return dtor_kind;
6594 }
6595
6596 #endif /* IN_GLIBCPP_V3 */
6597
6598 #ifdef STANDALONE_DEMANGLER
6599
6600 #include "getopt.h"
6601 #include "dyn-string.h"
6602
6603 static void print_usage (FILE* fp, int exit_value);
6604
6605 #define IS_ALPHA(CHAR) \
6606 (((CHAR) >= 'a' && (CHAR) <= 'z') \
6607 || ((CHAR) >= 'A' && (CHAR) <= 'Z'))
6608
6609 /* Non-zero if CHAR is a character than can occur in a mangled name. */
6610 #define is_mangled_char(CHAR) \
6611 (IS_ALPHA (CHAR) || IS_DIGIT (CHAR) \
6612 || (CHAR) == '_' || (CHAR) == '.' || (CHAR) == '$')
6613
6614 /* The name of this program, as invoked. */
6615 const char* program_name;
6616
6617 /* Prints usage summary to FP and then exits with EXIT_VALUE. */
6618
6619 static void
print_usage(FILE * fp,int exit_value)6620 print_usage (FILE* fp, int exit_value)
6621 {
6622 fprintf (fp, "Usage: %s [options] [names ...]\n", program_name);
6623 fprintf (fp, "Options:\n");
6624 fprintf (fp, " -h,--help Display this message.\n");
6625 fprintf (fp, " -p,--no-params Don't display function parameters\n");
6626 fprintf (fp, " -v,--verbose Produce verbose demanglings.\n");
6627 fprintf (fp, "If names are provided, they are demangled. Otherwise filters standard input.\n");
6628
6629 exit (exit_value);
6630 }
6631
6632 /* Option specification for getopt_long. */
6633 static const struct option long_options[] =
6634 {
6635 { "help", no_argument, NULL, 'h' },
6636 { "no-params", no_argument, NULL, 'p' },
6637 { "verbose", no_argument, NULL, 'v' },
6638 { NULL, no_argument, NULL, 0 },
6639 };
6640
6641 /* Main entry for a demangling filter executable. It will demangle
6642 its command line arguments, if any. If none are provided, it will
6643 filter stdin to stdout, replacing any recognized mangled C++ names
6644 with their demangled equivalents. */
6645
6646 int
main(int argc,char * argv[])6647 main (int argc, char *argv[])
6648 {
6649 int i;
6650 int opt_char;
6651 int options = DMGL_PARAMS | DMGL_ANSI | DMGL_TYPES;
6652
6653 /* Use the program name of this program, as invoked. */
6654 program_name = argv[0];
6655
6656 /* Parse options. */
6657 do
6658 {
6659 opt_char = getopt_long (argc, argv, "hpv", long_options, NULL);
6660 switch (opt_char)
6661 {
6662 case '?': /* Unrecognized option. */
6663 print_usage (stderr, 1);
6664 break;
6665
6666 case 'h':
6667 print_usage (stdout, 0);
6668 break;
6669
6670 case 'p':
6671 options &= ~ DMGL_PARAMS;
6672 break;
6673
6674 case 'v':
6675 options |= DMGL_VERBOSE;
6676 break;
6677 }
6678 }
6679 while (opt_char != -1);
6680
6681 if (optind == argc)
6682 /* No command line arguments were provided. Filter stdin. */
6683 {
6684 dyn_string_t mangled = dyn_string_new (3);
6685 char *s;
6686
6687 /* Read all of input. */
6688 while (!feof (stdin))
6689 {
6690 char c;
6691
6692 /* Pile characters into mangled until we hit one that can't
6693 occur in a mangled name. */
6694 c = getchar ();
6695 while (!feof (stdin) && is_mangled_char (c))
6696 {
6697 dyn_string_append_char (mangled, c);
6698 if (feof (stdin))
6699 break;
6700 c = getchar ();
6701 }
6702
6703 if (dyn_string_length (mangled) > 0)
6704 {
6705 #ifdef IN_GLIBCPP_V3
6706 s = __cxa_demangle (dyn_string_buf (mangled), NULL, NULL, NULL);
6707 #else
6708 s = cplus_demangle_v3 (dyn_string_buf (mangled), options);
6709 #endif
6710
6711 if (s != NULL)
6712 {
6713 fputs (s, stdout);
6714 free (s);
6715 }
6716 else
6717 {
6718 /* It might not have been a mangled name. Print the
6719 original text. */
6720 fputs (dyn_string_buf (mangled), stdout);
6721 }
6722
6723 dyn_string_clear (mangled);
6724 }
6725
6726 /* If we haven't hit EOF yet, we've read one character that
6727 can't occur in a mangled name, so print it out. */
6728 if (!feof (stdin))
6729 putchar (c);
6730 }
6731
6732 dyn_string_delete (mangled);
6733 }
6734 else
6735 /* Demangle command line arguments. */
6736 {
6737 /* Loop over command line arguments. */
6738 for (i = optind; i < argc; ++i)
6739 {
6740 char *s;
6741 #ifdef IN_GLIBCPP_V3
6742 int status;
6743 #endif
6744
6745 /* Attempt to demangle. */
6746 #ifdef IN_GLIBCPP_V3
6747 s = __cxa_demangle (argv[i], NULL, NULL, &status);
6748 #else
6749 s = cplus_demangle_v3 (argv[i], options);
6750 #endif
6751
6752 /* If it worked, print the demangled name. */
6753 if (s != NULL)
6754 {
6755 printf ("%s\n", s);
6756 free (s);
6757 }
6758 else
6759 {
6760 #ifdef IN_GLIBCPP_V3
6761 fprintf (stderr, "Failed: %s (status %d)\n", argv[i], status);
6762 #else
6763 fprintf (stderr, "Failed: %s\n", argv[i]);
6764 #endif
6765 }
6766 }
6767 }
6768
6769 return 0;
6770 }
6771
6772 #endif /* STANDALONE_DEMANGLER */
6773