[gdb/testsuite] Fix gdb.dwarf2/dw2-filename.exp with -readnow
[deliverable/binutils-gdb.git] / gdb / c-typeprint.c
1 /* Support for printing C and C++ types for GDB, the GNU debugger.
2 Copyright (C) 1986-2020 Free Software Foundation, Inc.
3
4 This file is part of GDB.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18
19 #include "defs.h"
20 #include "gdb_obstack.h"
21 #include "bfd.h" /* Binary File Description. */
22 #include "symtab.h"
23 #include "gdbtypes.h"
24 #include "expression.h"
25 #include "value.h"
26 #include "gdbcore.h"
27 #include "target.h"
28 #include "language.h"
29 #include "demangle.h"
30 #include "c-lang.h"
31 #include "cli/cli-style.h"
32 #include "typeprint.h"
33 #include "cp-abi.h"
34 #include "cp-support.h"
35
36 /* A list of access specifiers used for printing. */
37
38 enum access_specifier
39 {
40 s_none,
41 s_public,
42 s_private,
43 s_protected
44 };
45
46 static void c_type_print_varspec_suffix (struct type *, struct ui_file *, int,
47 int, int,
48 enum language,
49 const struct type_print_options *);
50
51 static void c_type_print_varspec_prefix (struct type *,
52 struct ui_file *,
53 int, int, int,
54 enum language,
55 const struct type_print_options *,
56 struct print_offset_data *);
57
58 /* Print "const", "volatile", or address space modifiers. */
59 static void c_type_print_modifier (struct type *,
60 struct ui_file *,
61 int, int, enum language);
62
63 static void c_type_print_base_1 (struct type *type, struct ui_file *stream,
64 int show, int level, enum language language,
65 const struct type_print_options *flags,
66 struct print_offset_data *podata);
67 \f
68
69 /* A callback function for cp_canonicalize_string_full that uses
70 typedef_hash_table::find_typedef. */
71
72 static const char *
73 find_typedef_for_canonicalize (struct type *t, void *data)
74 {
75 return typedef_hash_table::find_typedef
76 ((const struct type_print_options *) data, t);
77 }
78
79 /* Print NAME on STREAM. If the 'raw' field of FLAGS is not set,
80 canonicalize NAME using the local typedefs first. */
81
82 static void
83 print_name_maybe_canonical (const char *name,
84 const struct type_print_options *flags,
85 struct ui_file *stream)
86 {
87 gdb::unique_xmalloc_ptr<char> s;
88
89 if (!flags->raw)
90 s = cp_canonicalize_string_full (name,
91 find_typedef_for_canonicalize,
92 (void *) flags);
93
94 fputs_filtered (s != nullptr ? s.get () : name, stream);
95 }
96
97 \f
98
99 /* Helper function for c_print_type. */
100
101 static void
102 c_print_type_1 (struct type *type,
103 const char *varstring,
104 struct ui_file *stream,
105 int show, int level,
106 enum language language,
107 const struct type_print_options *flags,
108 struct print_offset_data *podata)
109 {
110 enum type_code code;
111 int demangled_args;
112 int need_post_space;
113 const char *local_name;
114
115 if (show > 0)
116 type = check_typedef (type);
117
118 local_name = typedef_hash_table::find_typedef (flags, type);
119 code = type->code ();
120 if (local_name != NULL)
121 {
122 fputs_filtered (local_name, stream);
123 if (varstring != NULL && *varstring != '\0')
124 fputs_filtered (" ", stream);
125 }
126 else
127 {
128 c_type_print_base_1 (type, stream, show, level, language, flags, podata);
129 if ((varstring != NULL && *varstring != '\0')
130 /* Need a space if going to print stars or brackets;
131 but not if we will print just a type name. */
132 || ((show > 0 || type->name () == 0)
133 && (code == TYPE_CODE_PTR || code == TYPE_CODE_FUNC
134 || code == TYPE_CODE_METHOD
135 || (code == TYPE_CODE_ARRAY
136 && !type->is_vector ())
137 || code == TYPE_CODE_MEMBERPTR
138 || code == TYPE_CODE_METHODPTR
139 || TYPE_IS_REFERENCE (type))))
140 fputs_filtered (" ", stream);
141 need_post_space = (varstring != NULL && strcmp (varstring, "") != 0);
142 c_type_print_varspec_prefix (type, stream, show, 0, need_post_space,
143 language, flags, podata);
144 }
145
146 if (varstring != NULL)
147 {
148 if (code == TYPE_CODE_FUNC || code == TYPE_CODE_METHOD)
149 fputs_styled (varstring, function_name_style.style (), stream);
150 else
151 fputs_styled (varstring, variable_name_style.style (), stream);
152
153 /* For demangled function names, we have the arglist as part of
154 the name, so don't print an additional pair of ()'s. */
155 if (local_name == NULL)
156 {
157 demangled_args = strchr (varstring, '(') != NULL;
158 c_type_print_varspec_suffix (type, stream, show,
159 0, demangled_args,
160 language, flags);
161 }
162 }
163 }
164
165 /* LEVEL is the depth to indent lines by. */
166
167 void
168 c_print_type (struct type *type,
169 const char *varstring,
170 struct ui_file *stream,
171 int show, int level,
172 const struct type_print_options *flags)
173 {
174 struct print_offset_data podata;
175
176 c_print_type_1 (type, varstring, stream, show, level,
177 current_language->la_language, flags, &podata);
178 }
179
180
181 /* See c-lang.h. */
182
183 void
184 c_print_type (struct type *type,
185 const char *varstring,
186 struct ui_file *stream,
187 int show, int level,
188 enum language language,
189 const struct type_print_options *flags)
190 {
191 struct print_offset_data podata;
192
193 c_print_type_1 (type, varstring, stream, show, level, language, flags,
194 &podata);
195 }
196
197 /* Print a typedef using C syntax. TYPE is the underlying type.
198 NEW_SYMBOL is the symbol naming the type. STREAM is the stream on
199 which to print. */
200
201 void
202 c_print_typedef (struct type *type,
203 struct symbol *new_symbol,
204 struct ui_file *stream)
205 {
206 type = check_typedef (type);
207 fprintf_filtered (stream, "typedef ");
208 type_print (type, "", stream, -1);
209 if ((SYMBOL_TYPE (new_symbol))->name () == 0
210 || strcmp ((SYMBOL_TYPE (new_symbol))->name (),
211 new_symbol->linkage_name ()) != 0
212 || SYMBOL_TYPE (new_symbol)->code () == TYPE_CODE_TYPEDEF)
213 fprintf_filtered (stream, " %s", new_symbol->print_name ());
214 fprintf_filtered (stream, ";");
215 }
216
217 /* If TYPE is a derived type, then print out derivation information.
218 Print only the actual base classes of this type, not the base
219 classes of the base classes. I.e. for the derivation hierarchy:
220
221 class A { int a; };
222 class B : public A {int b; };
223 class C : public B {int c; };
224
225 Print the type of class C as:
226
227 class C : public B {
228 int c;
229 }
230
231 Not as the following (like gdb used to), which is not legal C++
232 syntax for derived types and may be confused with the multiple
233 inheritance form:
234
235 class C : public B : public A {
236 int c;
237 }
238
239 In general, gdb should try to print the types as closely as
240 possible to the form that they appear in the source code. */
241
242 static void
243 cp_type_print_derivation_info (struct ui_file *stream,
244 struct type *type,
245 const struct type_print_options *flags)
246 {
247 const char *name;
248 int i;
249
250 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
251 {
252 wrap_here (" ");
253 fputs_filtered (i == 0 ? ": " : ", ", stream);
254 fprintf_filtered (stream, "%s%s ",
255 BASETYPE_VIA_PUBLIC (type, i)
256 ? "public" : (TYPE_FIELD_PROTECTED (type, i)
257 ? "protected" : "private"),
258 BASETYPE_VIA_VIRTUAL (type, i) ? " virtual" : "");
259 name = TYPE_BASECLASS (type, i)->name ();
260 if (name)
261 print_name_maybe_canonical (name, flags, stream);
262 else
263 fprintf_filtered (stream, "(null)");
264 }
265 if (i > 0)
266 {
267 fputs_filtered (" ", stream);
268 }
269 }
270
271 /* Print the C++ method arguments ARGS to the file STREAM. */
272
273 static void
274 cp_type_print_method_args (struct type *mtype, const char *prefix,
275 const char *varstring, int staticp,
276 struct ui_file *stream,
277 enum language language,
278 const struct type_print_options *flags)
279 {
280 struct field *args = mtype->fields ();
281 int nargs = mtype->num_fields ();
282 int varargs = mtype->has_varargs ();
283 int i;
284
285 fprintf_symbol_filtered (stream, prefix,
286 language_cplus, DMGL_ANSI);
287 fprintf_symbol_filtered (stream, varstring,
288 language_cplus, DMGL_ANSI);
289 fputs_filtered ("(", stream);
290
291 /* Skip the class variable. We keep this here to accommodate older
292 compilers and debug formats which may not support artificial
293 parameters. */
294 i = staticp ? 0 : 1;
295 if (nargs > i)
296 {
297 while (i < nargs)
298 {
299 struct field arg = args[i++];
300
301 /* Skip any artificial arguments. */
302 if (FIELD_ARTIFICIAL (arg))
303 continue;
304
305 c_print_type (arg.type (), "", stream, 0, 0, flags);
306
307 if (i == nargs && varargs)
308 fprintf_filtered (stream, ", ...");
309 else if (i < nargs)
310 {
311 fprintf_filtered (stream, ", ");
312 wrap_here (" ");
313 }
314 }
315 }
316 else if (varargs)
317 fprintf_filtered (stream, "...");
318 else if (language == language_cplus)
319 fprintf_filtered (stream, "void");
320
321 fprintf_filtered (stream, ")");
322
323 /* For non-static methods, read qualifiers from the type of
324 THIS. */
325 if (!staticp)
326 {
327 struct type *domain;
328
329 gdb_assert (nargs > 0);
330 gdb_assert (args[0].type ()->code () == TYPE_CODE_PTR);
331 domain = TYPE_TARGET_TYPE (args[0].type ());
332
333 if (TYPE_CONST (domain))
334 fprintf_filtered (stream, " const");
335
336 if (TYPE_VOLATILE (domain))
337 fprintf_filtered (stream, " volatile");
338
339 if (TYPE_RESTRICT (domain))
340 fprintf_filtered (stream, (language == language_cplus
341 ? " __restrict__"
342 : " restrict"));
343
344 if (TYPE_ATOMIC (domain))
345 fprintf_filtered (stream, " _Atomic");
346 }
347 }
348
349
350 /* Print any asterisks or open-parentheses needed before the
351 variable name (to describe its type).
352
353 On outermost call, pass 0 for PASSED_A_PTR.
354 On outermost call, SHOW > 0 means should ignore
355 any typename for TYPE and show its details.
356 SHOW is always zero on recursive calls.
357
358 NEED_POST_SPACE is non-zero when a space will be be needed
359 between a trailing qualifier and a field, variable, or function
360 name. */
361
362 static void
363 c_type_print_varspec_prefix (struct type *type,
364 struct ui_file *stream,
365 int show, int passed_a_ptr,
366 int need_post_space,
367 enum language language,
368 const struct type_print_options *flags,
369 struct print_offset_data *podata)
370 {
371 const char *name;
372
373 if (type == 0)
374 return;
375
376 if (type->name () && show <= 0)
377 return;
378
379 QUIT;
380
381 switch (type->code ())
382 {
383 case TYPE_CODE_PTR:
384 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
385 stream, show, 1, 1, language, flags,
386 podata);
387 fprintf_filtered (stream, "*");
388 c_type_print_modifier (type, stream, 1, need_post_space, language);
389 break;
390
391 case TYPE_CODE_MEMBERPTR:
392 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
393 stream, show, 0, 0, language, flags, podata);
394 name = TYPE_SELF_TYPE (type)->name ();
395 if (name)
396 print_name_maybe_canonical (name, flags, stream);
397 else
398 c_type_print_base_1 (TYPE_SELF_TYPE (type),
399 stream, -1, passed_a_ptr, language, flags,
400 podata);
401 fprintf_filtered (stream, "::*");
402 break;
403
404 case TYPE_CODE_METHODPTR:
405 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
406 stream, show, 0, 0, language, flags,
407 podata);
408 fprintf_filtered (stream, "(");
409 name = TYPE_SELF_TYPE (type)->name ();
410 if (name)
411 print_name_maybe_canonical (name, flags, stream);
412 else
413 c_type_print_base_1 (TYPE_SELF_TYPE (type),
414 stream, -1, passed_a_ptr, language, flags,
415 podata);
416 fprintf_filtered (stream, "::*");
417 break;
418
419 case TYPE_CODE_REF:
420 case TYPE_CODE_RVALUE_REF:
421 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
422 stream, show, 1, 0, language, flags,
423 podata);
424 fprintf_filtered (stream, type->code () == TYPE_CODE_REF ? "&" : "&&");
425 c_type_print_modifier (type, stream, 1, need_post_space, language);
426 break;
427
428 case TYPE_CODE_METHOD:
429 case TYPE_CODE_FUNC:
430 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
431 stream, show, 0, 0, language, flags,
432 podata);
433 if (passed_a_ptr)
434 fprintf_filtered (stream, "(");
435 break;
436
437 case TYPE_CODE_ARRAY:
438 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
439 stream, show, 0, 0, language, flags,
440 podata);
441 if (passed_a_ptr)
442 fprintf_filtered (stream, "(");
443 break;
444
445 case TYPE_CODE_TYPEDEF:
446 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
447 stream, show, passed_a_ptr, 0,
448 language, flags, podata);
449 break;
450
451 case TYPE_CODE_UNDEF:
452 case TYPE_CODE_STRUCT:
453 case TYPE_CODE_UNION:
454 case TYPE_CODE_ENUM:
455 case TYPE_CODE_FLAGS:
456 case TYPE_CODE_INT:
457 case TYPE_CODE_FLT:
458 case TYPE_CODE_VOID:
459 case TYPE_CODE_ERROR:
460 case TYPE_CODE_CHAR:
461 case TYPE_CODE_BOOL:
462 case TYPE_CODE_SET:
463 case TYPE_CODE_RANGE:
464 case TYPE_CODE_STRING:
465 case TYPE_CODE_COMPLEX:
466 case TYPE_CODE_NAMESPACE:
467 case TYPE_CODE_DECFLOAT:
468 /* These types need no prefix. They are listed here so that
469 gcc -Wall will reveal any types that haven't been handled. */
470 break;
471 default:
472 error (_("type not handled in c_type_print_varspec_prefix()"));
473 break;
474 }
475 }
476
477 /* Print out "const" and "volatile" attributes,
478 and address space id if present.
479 TYPE is a pointer to the type being printed out.
480 STREAM is the output destination.
481 NEED_PRE_SPACE = 1 indicates an initial white space is needed.
482 NEED_POST_SPACE = 1 indicates a final white space is needed. */
483
484 static void
485 c_type_print_modifier (struct type *type, struct ui_file *stream,
486 int need_pre_space, int need_post_space,
487 enum language language)
488 {
489 int did_print_modifier = 0;
490 const char *address_space_id;
491
492 /* We don't print `const' qualifiers for references --- since all
493 operators affect the thing referenced, not the reference itself,
494 every reference is `const'. */
495 if (TYPE_CONST (type) && !TYPE_IS_REFERENCE (type))
496 {
497 if (need_pre_space)
498 fprintf_filtered (stream, " ");
499 fprintf_filtered (stream, "const");
500 did_print_modifier = 1;
501 }
502
503 if (TYPE_VOLATILE (type))
504 {
505 if (did_print_modifier || need_pre_space)
506 fprintf_filtered (stream, " ");
507 fprintf_filtered (stream, "volatile");
508 did_print_modifier = 1;
509 }
510
511 if (TYPE_RESTRICT (type))
512 {
513 if (did_print_modifier || need_pre_space)
514 fprintf_filtered (stream, " ");
515 fprintf_filtered (stream, (language == language_cplus
516 ? "__restrict__"
517 : "restrict"));
518 did_print_modifier = 1;
519 }
520
521 if (TYPE_ATOMIC (type))
522 {
523 if (did_print_modifier || need_pre_space)
524 fprintf_filtered (stream, " ");
525 fprintf_filtered (stream, "_Atomic");
526 did_print_modifier = 1;
527 }
528
529 address_space_id
530 = address_space_type_instance_flags_to_name (get_type_arch (type),
531 type->instance_flags ());
532 if (address_space_id)
533 {
534 if (did_print_modifier || need_pre_space)
535 fprintf_filtered (stream, " ");
536 fprintf_filtered (stream, "@%s", address_space_id);
537 did_print_modifier = 1;
538 }
539
540 if (did_print_modifier && need_post_space)
541 fprintf_filtered (stream, " ");
542 }
543
544
545 /* Print out the arguments of TYPE, which should have TYPE_CODE_METHOD
546 or TYPE_CODE_FUNC, to STREAM. Artificial arguments, such as "this"
547 in non-static methods, are displayed if LINKAGE_NAME is zero. If
548 LINKAGE_NAME is non-zero and LANGUAGE is language_cplus the topmost
549 parameter types get removed their possible const and volatile qualifiers to
550 match demangled linkage name parameters part of such function type.
551 LANGUAGE is the language in which TYPE was defined. This is a necessary
552 evil since this code is used by the C and C++. */
553
554 void
555 c_type_print_args (struct type *type, struct ui_file *stream,
556 int linkage_name, enum language language,
557 const struct type_print_options *flags)
558 {
559 int i;
560 int printed_any = 0;
561
562 fprintf_filtered (stream, "(");
563
564 for (i = 0; i < type->num_fields (); i++)
565 {
566 struct type *param_type;
567
568 if (TYPE_FIELD_ARTIFICIAL (type, i) && linkage_name)
569 continue;
570
571 if (printed_any)
572 {
573 fprintf_filtered (stream, ", ");
574 wrap_here (" ");
575 }
576
577 param_type = type->field (i).type ();
578
579 if (language == language_cplus && linkage_name)
580 {
581 /* C++ standard, 13.1 Overloadable declarations, point 3, item:
582 - Parameter declarations that differ only in the presence or
583 absence of const and/or volatile are equivalent.
584
585 And the const/volatile qualifiers are not present in the mangled
586 names as produced by GCC. */
587
588 param_type = make_cv_type (0, 0, param_type, NULL);
589 }
590
591 c_print_type (param_type, "", stream, -1, 0, language, flags);
592 printed_any = 1;
593 }
594
595 if (printed_any && type->has_varargs ())
596 {
597 /* Print out a trailing ellipsis for varargs functions. Ignore
598 TYPE_VARARGS if the function has no named arguments; that
599 represents unprototyped (K&R style) C functions. */
600 if (printed_any && type->has_varargs ())
601 {
602 fprintf_filtered (stream, ", ");
603 wrap_here (" ");
604 fprintf_filtered (stream, "...");
605 }
606 }
607 else if (!printed_any
608 && (type->is_prototyped () || language == language_cplus))
609 fprintf_filtered (stream, "void");
610
611 fprintf_filtered (stream, ")");
612 }
613
614 /* Return true iff the j'th overloading of the i'th method of TYPE
615 is a type conversion operator, like `operator int () { ... }'.
616 When listing a class's methods, we don't print the return type of
617 such operators. */
618
619 static int
620 is_type_conversion_operator (struct type *type, int i, int j)
621 {
622 /* I think the whole idea of recognizing type conversion operators
623 by their name is pretty terrible. But I don't think our present
624 data structure gives us any other way to tell. If you know of
625 some other way, feel free to rewrite this function. */
626 const char *name = TYPE_FN_FIELDLIST_NAME (type, i);
627
628 if (!startswith (name, CP_OPERATOR_STR))
629 return 0;
630
631 name += 8;
632 if (! strchr (" \t\f\n\r", *name))
633 return 0;
634
635 while (strchr (" \t\f\n\r", *name))
636 name++;
637
638 if (!('a' <= *name && *name <= 'z')
639 && !('A' <= *name && *name <= 'Z')
640 && *name != '_')
641 /* If this doesn't look like the start of an identifier, then it
642 isn't a type conversion operator. */
643 return 0;
644 else if (startswith (name, "new"))
645 name += 3;
646 else if (startswith (name, "delete"))
647 name += 6;
648 else
649 /* If it doesn't look like new or delete, it's a type conversion
650 operator. */
651 return 1;
652
653 /* Is that really the end of the name? */
654 if (('a' <= *name && *name <= 'z')
655 || ('A' <= *name && *name <= 'Z')
656 || ('0' <= *name && *name <= '9')
657 || *name == '_')
658 /* No, so the identifier following "operator" must be a type name,
659 and this is a type conversion operator. */
660 return 1;
661
662 /* That was indeed the end of the name, so it was `operator new' or
663 `operator delete', neither of which are type conversion
664 operators. */
665 return 0;
666 }
667
668 /* Given a C++ qualified identifier QID, strip off the qualifiers,
669 yielding the unqualified name. The return value is a pointer into
670 the original string.
671
672 It's a pity we don't have this information in some more structured
673 form. Even the author of this function feels that writing little
674 parsers like this everywhere is stupid. */
675
676 static char *
677 remove_qualifiers (char *qid)
678 {
679 int quoted = 0; /* Zero if we're not in quotes;
680 '"' if we're in a double-quoted string;
681 '\'' if we're in a single-quoted string. */
682 int depth = 0; /* Number of unclosed parens we've seen. */
683 char *parenstack = (char *) alloca (strlen (qid));
684 char *scan;
685 char *last = 0; /* The character after the rightmost
686 `::' token we've seen so far. */
687
688 for (scan = qid; *scan; scan++)
689 {
690 if (quoted)
691 {
692 if (*scan == quoted)
693 quoted = 0;
694 else if (*scan == '\\' && *(scan + 1))
695 scan++;
696 }
697 else if (scan[0] == ':' && scan[1] == ':')
698 {
699 /* If we're inside parenthesis (i.e., an argument list) or
700 angle brackets (i.e., a list of template arguments), then
701 we don't record the position of this :: token, since it's
702 not relevant to the top-level structure we're trying to
703 operate on. */
704 if (depth == 0)
705 {
706 last = scan + 2;
707 scan++;
708 }
709 }
710 else if (*scan == '"' || *scan == '\'')
711 quoted = *scan;
712 else if (*scan == '(')
713 parenstack[depth++] = ')';
714 else if (*scan == '[')
715 parenstack[depth++] = ']';
716 /* We're going to treat <> as a pair of matching characters,
717 since we're more likely to see those in template id's than
718 real less-than characters. What a crock. */
719 else if (*scan == '<')
720 parenstack[depth++] = '>';
721 else if (*scan == ')' || *scan == ']' || *scan == '>')
722 {
723 if (depth > 0 && parenstack[depth - 1] == *scan)
724 depth--;
725 else
726 {
727 /* We're going to do a little error recovery here. If
728 we don't find a match for *scan on the paren stack,
729 but there is something lower on the stack that does
730 match, we pop the stack to that point. */
731 int i;
732
733 for (i = depth - 1; i >= 0; i--)
734 if (parenstack[i] == *scan)
735 {
736 depth = i;
737 break;
738 }
739 }
740 }
741 }
742
743 if (last)
744 return last;
745 else
746 /* We didn't find any :: tokens at the top level, so declare the
747 whole thing an unqualified identifier. */
748 return qid;
749 }
750
751 /* Print any array sizes, function arguments or close parentheses
752 needed after the variable name (to describe its type).
753 Args work like c_type_print_varspec_prefix. */
754
755 static void
756 c_type_print_varspec_suffix (struct type *type,
757 struct ui_file *stream,
758 int show, int passed_a_ptr,
759 int demangled_args,
760 enum language language,
761 const struct type_print_options *flags)
762 {
763 if (type == 0)
764 return;
765
766 if (type->name () && show <= 0)
767 return;
768
769 QUIT;
770
771 switch (type->code ())
772 {
773 case TYPE_CODE_ARRAY:
774 {
775 LONGEST low_bound, high_bound;
776 int is_vector = type->is_vector ();
777
778 if (passed_a_ptr)
779 fprintf_filtered (stream, ")");
780
781 fprintf_filtered (stream, (is_vector ?
782 " __attribute__ ((vector_size(" : "["));
783 /* Bounds are not yet resolved, print a bounds placeholder instead. */
784 if (type->bounds ()->high.kind () == PROP_LOCEXPR
785 || type->bounds ()->high.kind () == PROP_LOCLIST)
786 fprintf_filtered (stream, "variable length");
787 else if (get_array_bounds (type, &low_bound, &high_bound))
788 fprintf_filtered (stream, "%s",
789 plongest (high_bound - low_bound + 1));
790 fprintf_filtered (stream, (is_vector ? ")))" : "]"));
791
792 c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream,
793 show, 0, 0, language, flags);
794 }
795 break;
796
797 case TYPE_CODE_MEMBERPTR:
798 c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream,
799 show, 0, 0, language, flags);
800 break;
801
802 case TYPE_CODE_METHODPTR:
803 fprintf_filtered (stream, ")");
804 c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream,
805 show, 0, 0, language, flags);
806 break;
807
808 case TYPE_CODE_PTR:
809 case TYPE_CODE_REF:
810 case TYPE_CODE_RVALUE_REF:
811 c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream,
812 show, 1, 0, language, flags);
813 break;
814
815 case TYPE_CODE_METHOD:
816 case TYPE_CODE_FUNC:
817 if (passed_a_ptr)
818 fprintf_filtered (stream, ")");
819 if (!demangled_args)
820 c_type_print_args (type, stream, 0, language, flags);
821 c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream,
822 show, passed_a_ptr, 0, language, flags);
823 break;
824
825 case TYPE_CODE_TYPEDEF:
826 c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream,
827 show, passed_a_ptr, 0, language, flags);
828 break;
829
830 case TYPE_CODE_UNDEF:
831 case TYPE_CODE_STRUCT:
832 case TYPE_CODE_UNION:
833 case TYPE_CODE_FLAGS:
834 case TYPE_CODE_ENUM:
835 case TYPE_CODE_INT:
836 case TYPE_CODE_FLT:
837 case TYPE_CODE_VOID:
838 case TYPE_CODE_ERROR:
839 case TYPE_CODE_CHAR:
840 case TYPE_CODE_BOOL:
841 case TYPE_CODE_SET:
842 case TYPE_CODE_RANGE:
843 case TYPE_CODE_STRING:
844 case TYPE_CODE_COMPLEX:
845 case TYPE_CODE_NAMESPACE:
846 case TYPE_CODE_DECFLOAT:
847 /* These types do not need a suffix. They are listed so that
848 gcc -Wall will report types that may not have been
849 considered. */
850 break;
851 default:
852 error (_("type not handled in c_type_print_varspec_suffix()"));
853 break;
854 }
855 }
856
857 /* A helper for c_type_print_base that displays template
858 parameters and their bindings, if needed.
859
860 TABLE is the local bindings table to use. If NULL, no printing is
861 done. Note that, at this point, TABLE won't have any useful
862 information in it -- but it is also used as a flag to
863 print_name_maybe_canonical to activate searching the global typedef
864 table.
865
866 TYPE is the type whose template arguments are being displayed.
867
868 STREAM is the stream on which to print. */
869
870 static void
871 c_type_print_template_args (const struct type_print_options *flags,
872 struct type *type, struct ui_file *stream)
873 {
874 int first = 1, i;
875
876 if (flags->raw)
877 return;
878
879 for (i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i)
880 {
881 struct symbol *sym = TYPE_TEMPLATE_ARGUMENT (type, i);
882
883 if (SYMBOL_CLASS (sym) != LOC_TYPEDEF)
884 continue;
885
886 if (first)
887 {
888 wrap_here (" ");
889 fprintf_filtered (stream, _("[with %s = "), sym->linkage_name ());
890 first = 0;
891 }
892 else
893 {
894 fputs_filtered (", ", stream);
895 wrap_here (" ");
896 fprintf_filtered (stream, "%s = ", sym->linkage_name ());
897 }
898
899 c_print_type (SYMBOL_TYPE (sym), "", stream, -1, 0, flags);
900 }
901
902 if (!first)
903 fputs_filtered (_("] "), stream);
904 }
905
906 /* Use 'print_spaces_filtered', but take into consideration the
907 type_print_options FLAGS in order to determine how many whitespaces
908 will be printed. */
909
910 static void
911 print_spaces_filtered_with_print_options
912 (int level, struct ui_file *stream, const struct type_print_options *flags)
913 {
914 if (!flags->print_offsets)
915 print_spaces_filtered (level, stream);
916 else
917 print_spaces_filtered (level + print_offset_data::indentation, stream);
918 }
919
920 /* Output an access specifier to STREAM, if needed. LAST_ACCESS is the
921 last access specifier output (typically returned by this function). */
922
923 static enum access_specifier
924 output_access_specifier (struct ui_file *stream,
925 enum access_specifier last_access,
926 int level, bool is_protected, bool is_private,
927 const struct type_print_options *flags)
928 {
929 if (is_protected)
930 {
931 if (last_access != s_protected)
932 {
933 last_access = s_protected;
934 print_spaces_filtered_with_print_options (level + 2, stream, flags);
935 fprintf_filtered (stream, "protected:\n");
936 }
937 }
938 else if (is_private)
939 {
940 if (last_access != s_private)
941 {
942 last_access = s_private;
943 print_spaces_filtered_with_print_options (level + 2, stream, flags);
944 fprintf_filtered (stream, "private:\n");
945 }
946 }
947 else
948 {
949 if (last_access != s_public)
950 {
951 last_access = s_public;
952 print_spaces_filtered_with_print_options (level + 2, stream, flags);
953 fprintf_filtered (stream, "public:\n");
954 }
955 }
956
957 return last_access;
958 }
959
960 /* Return true if an access label (i.e., "public:", "private:",
961 "protected:") needs to be printed for TYPE. */
962
963 static bool
964 need_access_label_p (struct type *type)
965 {
966 if (TYPE_DECLARED_CLASS (type))
967 {
968 QUIT;
969 for (int i = TYPE_N_BASECLASSES (type); i < type->num_fields (); i++)
970 if (!TYPE_FIELD_PRIVATE (type, i))
971 return true;
972 QUIT;
973 for (int j = 0; j < TYPE_NFN_FIELDS (type); j++)
974 for (int i = 0; i < TYPE_FN_FIELDLIST_LENGTH (type, j); i++)
975 if (!TYPE_FN_FIELD_PRIVATE (TYPE_FN_FIELDLIST1 (type,
976 j), i))
977 return true;
978 QUIT;
979 for (int i = 0; i < TYPE_TYPEDEF_FIELD_COUNT (type); ++i)
980 if (!TYPE_TYPEDEF_FIELD_PRIVATE (type, i))
981 return true;
982 }
983 else
984 {
985 QUIT;
986 for (int i = TYPE_N_BASECLASSES (type); i < type->num_fields (); i++)
987 if (TYPE_FIELD_PRIVATE (type, i) || TYPE_FIELD_PROTECTED (type, i))
988 return true;
989 QUIT;
990 for (int j = 0; j < TYPE_NFN_FIELDS (type); j++)
991 {
992 QUIT;
993 for (int i = 0; i < TYPE_FN_FIELDLIST_LENGTH (type, j); i++)
994 if (TYPE_FN_FIELD_PROTECTED (TYPE_FN_FIELDLIST1 (type,
995 j), i)
996 || TYPE_FN_FIELD_PRIVATE (TYPE_FN_FIELDLIST1 (type,
997 j),
998 i))
999 return true;
1000 }
1001 QUIT;
1002 for (int i = 0; i < TYPE_TYPEDEF_FIELD_COUNT (type); ++i)
1003 if (TYPE_TYPEDEF_FIELD_PROTECTED (type, i)
1004 || TYPE_TYPEDEF_FIELD_PRIVATE (type, i))
1005 return true;
1006 }
1007
1008 return false;
1009 }
1010
1011 /* Helper function that temporarily disables FLAGS->PRINT_OFFSETS,
1012 calls 'c_print_type_1', and then reenables FLAGS->PRINT_OFFSETS if
1013 applicable. */
1014
1015 static void
1016 c_print_type_no_offsets (struct type *type,
1017 const char *varstring,
1018 struct ui_file *stream,
1019 int show, int level,
1020 enum language language,
1021 struct type_print_options *flags,
1022 struct print_offset_data *podata)
1023 {
1024 unsigned int old_po = flags->print_offsets;
1025
1026 /* Temporarily disable print_offsets, because it would mess with
1027 indentation. */
1028 flags->print_offsets = 0;
1029 c_print_type_1 (type, varstring, stream, show, level, language, flags,
1030 podata);
1031 flags->print_offsets = old_po;
1032 }
1033
1034 /* Helper for 'c_type_print_base' that handles structs and unions.
1035 For a description of the arguments, see 'c_type_print_base'. */
1036
1037 static void
1038 c_type_print_base_struct_union (struct type *type, struct ui_file *stream,
1039 int show, int level,
1040 enum language language,
1041 const struct type_print_options *flags,
1042 struct print_offset_data *podata)
1043 {
1044 struct type_print_options local_flags = *flags;
1045 local_flags.local_typedefs = NULL;
1046
1047 std::unique_ptr<typedef_hash_table> hash_holder;
1048 if (!flags->raw)
1049 {
1050 if (flags->local_typedefs)
1051 local_flags.local_typedefs
1052 = new typedef_hash_table (*flags->local_typedefs);
1053 else
1054 local_flags.local_typedefs = new typedef_hash_table ();
1055
1056 hash_holder.reset (local_flags.local_typedefs);
1057 }
1058
1059 c_type_print_modifier (type, stream, 0, 1, language);
1060 if (type->code () == TYPE_CODE_UNION)
1061 fprintf_filtered (stream, "union ");
1062 else if (TYPE_DECLARED_CLASS (type))
1063 fprintf_filtered (stream, "class ");
1064 else
1065 fprintf_filtered (stream, "struct ");
1066
1067 /* Print the tag if it exists. The HP aCC compiler emits a
1068 spurious "{unnamed struct}"/"{unnamed union}"/"{unnamed
1069 enum}" tag for unnamed struct/union/enum's, which we don't
1070 want to print. */
1071 if (type->name () != NULL
1072 && !startswith (type->name (), "{unnamed"))
1073 {
1074 /* When printing the tag name, we are still effectively
1075 printing in the outer context, hence the use of FLAGS
1076 here. */
1077 print_name_maybe_canonical (type->name (), flags, stream);
1078 if (show > 0)
1079 fputs_filtered (" ", stream);
1080 }
1081
1082 if (show < 0)
1083 {
1084 /* If we just printed a tag name, no need to print anything
1085 else. */
1086 if (type->name () == NULL)
1087 fprintf_filtered (stream, "{...}");
1088 }
1089 else if (show > 0 || type->name () == NULL)
1090 {
1091 struct type *basetype;
1092 int vptr_fieldno;
1093
1094 c_type_print_template_args (&local_flags, type, stream);
1095
1096 /* Add in template parameters when printing derivation info. */
1097 if (local_flags.local_typedefs != NULL)
1098 local_flags.local_typedefs->add_template_parameters (type);
1099 cp_type_print_derivation_info (stream, type, &local_flags);
1100
1101 /* This holds just the global typedefs and the template
1102 parameters. */
1103 struct type_print_options semi_local_flags = *flags;
1104 semi_local_flags.local_typedefs = NULL;
1105
1106 std::unique_ptr<typedef_hash_table> semi_holder;
1107 if (local_flags.local_typedefs != nullptr)
1108 {
1109 semi_local_flags.local_typedefs
1110 = new typedef_hash_table (*local_flags.local_typedefs);
1111 semi_holder.reset (semi_local_flags.local_typedefs);
1112
1113 /* Now add in the local typedefs. */
1114 local_flags.local_typedefs->recursively_update (type);
1115 }
1116
1117 fprintf_filtered (stream, "{\n");
1118
1119 if (type->num_fields () == 0 && TYPE_NFN_FIELDS (type) == 0
1120 && TYPE_TYPEDEF_FIELD_COUNT (type) == 0)
1121 {
1122 if (type->is_stub ())
1123 fprintfi_filtered (level + 4, stream,
1124 _("%p[<incomplete type>%p]\n"),
1125 metadata_style.style ().ptr (), nullptr);
1126 else
1127 fprintfi_filtered (level + 4, stream,
1128 _("%p[<no data fields>%p]\n"),
1129 metadata_style.style ().ptr (), nullptr);
1130 }
1131
1132 /* Start off with no specific section type, so we can print
1133 one for the first field we find, and use that section type
1134 thereafter until we find another type. */
1135
1136 enum access_specifier section_type = s_none;
1137
1138 /* For a class, if all members are private, there's no need
1139 for a "private:" label; similarly, for a struct or union
1140 masquerading as a class, if all members are public, there's
1141 no need for a "public:" label. */
1142 bool need_access_label = need_access_label_p (type);
1143
1144 /* If there is a base class for this type,
1145 do not print the field that it occupies. */
1146
1147 int len = type->num_fields ();
1148 vptr_fieldno = get_vptr_fieldno (type, &basetype);
1149
1150 struct print_offset_data local_podata;
1151
1152 for (int i = TYPE_N_BASECLASSES (type); i < len; i++)
1153 {
1154 QUIT;
1155
1156 /* If we have a virtual table pointer, omit it. Even if
1157 virtual table pointers are not specifically marked in
1158 the debug info, they should be artificial. */
1159 if ((i == vptr_fieldno && type == basetype)
1160 || TYPE_FIELD_ARTIFICIAL (type, i))
1161 continue;
1162
1163 if (need_access_label)
1164 {
1165 section_type = output_access_specifier
1166 (stream, section_type, level,
1167 TYPE_FIELD_PROTECTED (type, i),
1168 TYPE_FIELD_PRIVATE (type, i), flags);
1169 }
1170
1171 bool is_static = field_is_static (&type->field (i));
1172
1173 if (flags->print_offsets)
1174 podata->update (type, i, stream);
1175
1176 print_spaces_filtered (level + 4, stream);
1177 if (is_static)
1178 fprintf_filtered (stream, "static ");
1179
1180 int newshow = show - 1;
1181
1182 if (!is_static && flags->print_offsets
1183 && (type->field (i).type ()->code () == TYPE_CODE_STRUCT
1184 || type->field (i).type ()->code () == TYPE_CODE_UNION))
1185 {
1186 /* If we're printing offsets and this field's type is
1187 either a struct or an union, then we're interested in
1188 expanding it. */
1189 ++newshow;
1190
1191 /* Make sure we carry our offset when we expand the
1192 struct/union. */
1193 local_podata.offset_bitpos
1194 = podata->offset_bitpos + TYPE_FIELD_BITPOS (type, i);
1195 /* We're entering a struct/union. Right now,
1196 PODATA->END_BITPOS points right *after* the
1197 struct/union. However, when printing the first field
1198 of this inner struct/union, the end_bitpos we're
1199 expecting is exactly at the beginning of the
1200 struct/union. Therefore, we subtract the length of
1201 the whole struct/union. */
1202 local_podata.end_bitpos
1203 = podata->end_bitpos
1204 - TYPE_LENGTH (type->field (i).type ()) * TARGET_CHAR_BIT;
1205 }
1206
1207 c_print_type_1 (type->field (i).type (),
1208 TYPE_FIELD_NAME (type, i),
1209 stream, newshow, level + 4,
1210 language, &local_flags, &local_podata);
1211
1212 if (!is_static && TYPE_FIELD_PACKED (type, i))
1213 {
1214 /* It is a bitfield. This code does not attempt
1215 to look at the bitpos and reconstruct filler,
1216 unnamed fields. This would lead to misleading
1217 results if the compiler does not put out fields
1218 for such things (I don't know what it does). */
1219 fprintf_filtered (stream, " : %d",
1220 TYPE_FIELD_BITSIZE (type, i));
1221 }
1222 fprintf_filtered (stream, ";\n");
1223 }
1224
1225 /* If there are both fields and methods, put a blank line
1226 between them. Make sure to count only method that we
1227 will display; artificial methods will be hidden. */
1228 len = TYPE_NFN_FIELDS (type);
1229 if (!flags->print_methods)
1230 len = 0;
1231 int real_len = 0;
1232 for (int i = 0; i < len; i++)
1233 {
1234 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, i);
1235 int len2 = TYPE_FN_FIELDLIST_LENGTH (type, i);
1236 int j;
1237
1238 for (j = 0; j < len2; j++)
1239 if (!TYPE_FN_FIELD_ARTIFICIAL (f, j))
1240 real_len++;
1241 }
1242 if (real_len > 0 && section_type != s_none)
1243 fprintf_filtered (stream, "\n");
1244
1245 /* C++: print out the methods. */
1246 for (int i = 0; i < len; i++)
1247 {
1248 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, i);
1249 int j, len2 = TYPE_FN_FIELDLIST_LENGTH (type, i);
1250 const char *method_name = TYPE_FN_FIELDLIST_NAME (type, i);
1251 const char *name = type->name ();
1252 int is_constructor = name && strcmp (method_name,
1253 name) == 0;
1254
1255 for (j = 0; j < len2; j++)
1256 {
1257 const char *mangled_name;
1258 gdb::unique_xmalloc_ptr<char> mangled_name_holder;
1259 char *demangled_name;
1260 const char *physname = TYPE_FN_FIELD_PHYSNAME (f, j);
1261 int is_full_physname_constructor =
1262 TYPE_FN_FIELD_CONSTRUCTOR (f, j)
1263 || is_constructor_name (physname)
1264 || is_destructor_name (physname)
1265 || method_name[0] == '~';
1266
1267 /* Do not print out artificial methods. */
1268 if (TYPE_FN_FIELD_ARTIFICIAL (f, j))
1269 continue;
1270
1271 QUIT;
1272 section_type = output_access_specifier
1273 (stream, section_type, level,
1274 TYPE_FN_FIELD_PROTECTED (f, j),
1275 TYPE_FN_FIELD_PRIVATE (f, j), flags);
1276
1277 print_spaces_filtered_with_print_options (level + 4, stream,
1278 flags);
1279 if (TYPE_FN_FIELD_VIRTUAL_P (f, j))
1280 fprintf_filtered (stream, "virtual ");
1281 else if (TYPE_FN_FIELD_STATIC_P (f, j))
1282 fprintf_filtered (stream, "static ");
1283 if (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)) == 0)
1284 {
1285 /* Keep GDB from crashing here. */
1286 fprintf_filtered (stream,
1287 _("%p[<undefined type>%p] %s;\n"),
1288 metadata_style.style ().ptr (), nullptr,
1289 TYPE_FN_FIELD_PHYSNAME (f, j));
1290 break;
1291 }
1292 else if (!is_constructor /* Constructors don't
1293 have declared
1294 types. */
1295 && !is_full_physname_constructor /* " " */
1296 && !is_type_conversion_operator (type, i, j))
1297 {
1298 c_print_type_no_offsets
1299 (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)),
1300 "", stream, -1, 0, language, &local_flags, podata);
1301
1302 fputs_filtered (" ", stream);
1303 }
1304 if (TYPE_FN_FIELD_STUB (f, j))
1305 {
1306 /* Build something we can demangle. */
1307 mangled_name_holder.reset (gdb_mangle_name (type, i, j));
1308 mangled_name = mangled_name_holder.get ();
1309 }
1310 else
1311 mangled_name = TYPE_FN_FIELD_PHYSNAME (f, j);
1312
1313 demangled_name =
1314 gdb_demangle (mangled_name,
1315 DMGL_ANSI | DMGL_PARAMS);
1316 if (demangled_name == NULL)
1317 {
1318 /* In some cases (for instance with the HP
1319 demangling), if a function has more than 10
1320 arguments, the demangling will fail.
1321 Let's try to reconstruct the function
1322 signature from the symbol information. */
1323 if (!TYPE_FN_FIELD_STUB (f, j))
1324 {
1325 int staticp = TYPE_FN_FIELD_STATIC_P (f, j);
1326 struct type *mtype = TYPE_FN_FIELD_TYPE (f, j);
1327
1328 cp_type_print_method_args (mtype,
1329 "",
1330 method_name,
1331 staticp,
1332 stream, language,
1333 &local_flags);
1334 }
1335 else
1336 fprintf_styled (stream, metadata_style.style (),
1337 _("<badly mangled name '%s'>"),
1338 mangled_name);
1339 }
1340 else
1341 {
1342 char *p;
1343 char *demangled_no_class
1344 = remove_qualifiers (demangled_name);
1345
1346 /* Get rid of the `static' appended by the
1347 demangler. */
1348 p = strstr (demangled_no_class, " static");
1349 if (p != NULL)
1350 {
1351 int length = p - demangled_no_class;
1352 char *demangled_no_static;
1353
1354 demangled_no_static
1355 = (char *) xmalloc (length + 1);
1356 strncpy (demangled_no_static,
1357 demangled_no_class, length);
1358 *(demangled_no_static + length) = '\0';
1359 fputs_filtered (demangled_no_static, stream);
1360 xfree (demangled_no_static);
1361 }
1362 else
1363 fputs_filtered (demangled_no_class, stream);
1364 xfree (demangled_name);
1365 }
1366
1367 fprintf_filtered (stream, ";\n");
1368 }
1369 }
1370
1371 /* Print out nested types. */
1372 if (TYPE_NESTED_TYPES_COUNT (type) != 0
1373 && semi_local_flags.print_nested_type_limit != 0)
1374 {
1375 if (semi_local_flags.print_nested_type_limit > 0)
1376 --semi_local_flags.print_nested_type_limit;
1377
1378 if (type->num_fields () != 0 || TYPE_NFN_FIELDS (type) != 0)
1379 fprintf_filtered (stream, "\n");
1380
1381 for (int i = 0; i < TYPE_NESTED_TYPES_COUNT (type); ++i)
1382 {
1383 print_spaces_filtered_with_print_options (level + 4, stream,
1384 flags);
1385 c_print_type_no_offsets (TYPE_NESTED_TYPES_FIELD_TYPE (type, i),
1386 "", stream, show, level + 4,
1387 language, &semi_local_flags, podata);
1388 fprintf_filtered (stream, ";\n");
1389 }
1390 }
1391
1392 /* Print typedefs defined in this class. */
1393
1394 if (TYPE_TYPEDEF_FIELD_COUNT (type) != 0 && flags->print_typedefs)
1395 {
1396 if (type->num_fields () != 0 || TYPE_NFN_FIELDS (type) != 0
1397 || TYPE_NESTED_TYPES_COUNT (type) != 0)
1398 fprintf_filtered (stream, "\n");
1399
1400 for (int i = 0; i < TYPE_TYPEDEF_FIELD_COUNT (type); i++)
1401 {
1402 struct type *target = TYPE_TYPEDEF_FIELD_TYPE (type, i);
1403
1404 /* Dereference the typedef declaration itself. */
1405 gdb_assert (target->code () == TYPE_CODE_TYPEDEF);
1406 target = TYPE_TARGET_TYPE (target);
1407
1408 if (need_access_label)
1409 {
1410 section_type = output_access_specifier
1411 (stream, section_type, level,
1412 TYPE_TYPEDEF_FIELD_PROTECTED (type, i),
1413 TYPE_TYPEDEF_FIELD_PRIVATE (type, i), flags);
1414 }
1415 print_spaces_filtered_with_print_options (level + 4, stream,
1416 flags);
1417 fprintf_filtered (stream, "typedef ");
1418
1419 /* We want to print typedefs with substitutions
1420 from the template parameters or globally-known
1421 typedefs but not local typedefs. */
1422 c_print_type_no_offsets (target,
1423 TYPE_TYPEDEF_FIELD_NAME (type, i),
1424 stream, show - 1, level + 4,
1425 language, &semi_local_flags, podata);
1426 fprintf_filtered (stream, ";\n");
1427 }
1428 }
1429
1430 if (flags->print_offsets)
1431 {
1432 if (show > 0)
1433 podata->finish (type, level, stream);
1434
1435 print_spaces_filtered (print_offset_data::indentation, stream);
1436 if (level == 0)
1437 print_spaces_filtered (2, stream);
1438 }
1439
1440 fprintfi_filtered (level, stream, "}");
1441 }
1442 }
1443
1444 /* Print the name of the type (or the ultimate pointer target,
1445 function value or array element), or the description of a structure
1446 or union.
1447
1448 SHOW positive means print details about the type (e.g. enum
1449 values), and print structure elements passing SHOW - 1 for show.
1450
1451 SHOW negative means just print the type name or struct tag if there
1452 is one. If there is no name, print something sensible but concise
1453 like "struct {...}".
1454
1455 SHOW zero means just print the type name or struct tag if there is
1456 one. If there is no name, print something sensible but not as
1457 concise like "struct {int x; int y;}".
1458
1459 LEVEL is the number of spaces to indent by.
1460 We increase it for some recursive calls. */
1461
1462 static void
1463 c_type_print_base_1 (struct type *type, struct ui_file *stream,
1464 int show, int level,
1465 enum language language,
1466 const struct type_print_options *flags,
1467 struct print_offset_data *podata)
1468 {
1469 int i;
1470 int len;
1471
1472 QUIT;
1473
1474 if (type == NULL)
1475 {
1476 fputs_styled (_("<type unknown>"), metadata_style.style (), stream);
1477 return;
1478 }
1479
1480 /* When SHOW is zero or less, and there is a valid type name, then
1481 always just print the type name directly from the type. */
1482
1483 if (show <= 0
1484 && type->name () != NULL)
1485 {
1486 c_type_print_modifier (type, stream, 0, 1, language);
1487
1488 /* If we have "typedef struct foo {. . .} bar;" do we want to
1489 print it as "struct foo" or as "bar"? Pick the latter for
1490 C++, because C++ folk tend to expect things like "class5
1491 *foo" rather than "struct class5 *foo". We rather
1492 arbitrarily choose to make language_minimal work in a C-like
1493 way. */
1494 if (language == language_c || language == language_minimal)
1495 {
1496 if (type->code () == TYPE_CODE_UNION)
1497 fprintf_filtered (stream, "union ");
1498 else if (type->code () == TYPE_CODE_STRUCT)
1499 {
1500 if (TYPE_DECLARED_CLASS (type))
1501 fprintf_filtered (stream, "class ");
1502 else
1503 fprintf_filtered (stream, "struct ");
1504 }
1505 else if (type->code () == TYPE_CODE_ENUM)
1506 fprintf_filtered (stream, "enum ");
1507 }
1508
1509 print_name_maybe_canonical (type->name (), flags, stream);
1510 return;
1511 }
1512
1513 type = check_typedef (type);
1514
1515 switch (type->code ())
1516 {
1517 case TYPE_CODE_TYPEDEF:
1518 /* If we get here, the typedef doesn't have a name, and we
1519 couldn't resolve TYPE_TARGET_TYPE. Not much we can do. */
1520 gdb_assert (type->name () == NULL);
1521 gdb_assert (TYPE_TARGET_TYPE (type) == NULL);
1522 fprintf_styled (stream, metadata_style.style (),
1523 _("<unnamed typedef>"));
1524 break;
1525
1526 case TYPE_CODE_FUNC:
1527 case TYPE_CODE_METHOD:
1528 if (TYPE_TARGET_TYPE (type) == NULL)
1529 type_print_unknown_return_type (stream);
1530 else
1531 c_type_print_base_1 (TYPE_TARGET_TYPE (type),
1532 stream, show, level, language, flags, podata);
1533 break;
1534 case TYPE_CODE_ARRAY:
1535 case TYPE_CODE_PTR:
1536 case TYPE_CODE_MEMBERPTR:
1537 case TYPE_CODE_REF:
1538 case TYPE_CODE_RVALUE_REF:
1539 case TYPE_CODE_METHODPTR:
1540 c_type_print_base_1 (TYPE_TARGET_TYPE (type),
1541 stream, show, level, language, flags, podata);
1542 break;
1543
1544 case TYPE_CODE_STRUCT:
1545 case TYPE_CODE_UNION:
1546 c_type_print_base_struct_union (type, stream, show, level,
1547 language, flags, podata);
1548 break;
1549
1550 case TYPE_CODE_ENUM:
1551 c_type_print_modifier (type, stream, 0, 1, language);
1552 fprintf_filtered (stream, "enum ");
1553 if (TYPE_DECLARED_CLASS (type))
1554 fprintf_filtered (stream, "class ");
1555 /* Print the tag name if it exists.
1556 The aCC compiler emits a spurious
1557 "{unnamed struct}"/"{unnamed union}"/"{unnamed enum}"
1558 tag for unnamed struct/union/enum's, which we don't
1559 want to print. */
1560 if (type->name () != NULL
1561 && !startswith (type->name (), "{unnamed"))
1562 {
1563 print_name_maybe_canonical (type->name (), flags, stream);
1564 if (show > 0)
1565 fputs_filtered (" ", stream);
1566 }
1567
1568 wrap_here (" ");
1569 if (show < 0)
1570 {
1571 /* If we just printed a tag name, no need to print anything
1572 else. */
1573 if (type->name () == NULL)
1574 fprintf_filtered (stream, "{...}");
1575 }
1576 else if (show > 0 || type->name () == NULL)
1577 {
1578 LONGEST lastval = 0;
1579
1580 /* We can't handle this case perfectly, as DWARF does not
1581 tell us whether or not the underlying type was specified
1582 in the source (and other debug formats don't provide this
1583 at all). We choose to print the underlying type, if it
1584 has a name, when in C++ on the theory that it's better to
1585 print too much than too little; but conversely not to
1586 print something egregiously outside the current
1587 language's syntax. */
1588 if (language == language_cplus && TYPE_TARGET_TYPE (type) != NULL)
1589 {
1590 struct type *underlying = check_typedef (TYPE_TARGET_TYPE (type));
1591
1592 if (underlying->name () != NULL)
1593 fprintf_filtered (stream, ": %s ", underlying->name ());
1594 }
1595
1596 fprintf_filtered (stream, "{");
1597 len = type->num_fields ();
1598 for (i = 0; i < len; i++)
1599 {
1600 QUIT;
1601 if (i)
1602 fprintf_filtered (stream, ", ");
1603 wrap_here (" ");
1604 fputs_styled (TYPE_FIELD_NAME (type, i),
1605 variable_name_style.style (), stream);
1606 if (lastval != TYPE_FIELD_ENUMVAL (type, i))
1607 {
1608 fprintf_filtered (stream, " = %s",
1609 plongest (TYPE_FIELD_ENUMVAL (type, i)));
1610 lastval = TYPE_FIELD_ENUMVAL (type, i);
1611 }
1612 lastval++;
1613 }
1614 fprintf_filtered (stream, "}");
1615 }
1616 break;
1617
1618 case TYPE_CODE_FLAGS:
1619 {
1620 struct type_print_options local_flags = *flags;
1621
1622 local_flags.local_typedefs = NULL;
1623
1624 c_type_print_modifier (type, stream, 0, 1, language);
1625 fprintf_filtered (stream, "flag ");
1626 print_name_maybe_canonical (type->name (), flags, stream);
1627 if (show > 0)
1628 {
1629 fputs_filtered (" ", stream);
1630 fprintf_filtered (stream, "{\n");
1631 if (type->num_fields () == 0)
1632 {
1633 if (type->is_stub ())
1634 fprintfi_filtered (level + 4, stream,
1635 _("%p[<incomplete type>%p]\n"),
1636 metadata_style.style ().ptr (), nullptr);
1637 else
1638 fprintfi_filtered (level + 4, stream,
1639 _("%p[<no data fields>%p]\n"),
1640 metadata_style.style ().ptr (), nullptr);
1641 }
1642 len = type->num_fields ();
1643 for (i = 0; i < len; i++)
1644 {
1645 QUIT;
1646 print_spaces_filtered (level + 4, stream);
1647 /* We pass "show" here and not "show - 1" to get enum types
1648 printed. There's no other way to see them. */
1649 c_print_type_1 (type->field (i).type (),
1650 TYPE_FIELD_NAME (type, i),
1651 stream, show, level + 4,
1652 language, &local_flags, podata);
1653 fprintf_filtered (stream, " @%s",
1654 plongest (TYPE_FIELD_BITPOS (type, i)));
1655 if (TYPE_FIELD_BITSIZE (type, i) > 1)
1656 {
1657 fprintf_filtered (stream, "-%s",
1658 plongest (TYPE_FIELD_BITPOS (type, i)
1659 + TYPE_FIELD_BITSIZE (type, i)
1660 - 1));
1661 }
1662 fprintf_filtered (stream, ";\n");
1663 }
1664 fprintfi_filtered (level, stream, "}");
1665 }
1666 }
1667 break;
1668
1669 case TYPE_CODE_VOID:
1670 fprintf_filtered (stream, "void");
1671 break;
1672
1673 case TYPE_CODE_UNDEF:
1674 fprintf_filtered (stream, _("struct <unknown>"));
1675 break;
1676
1677 case TYPE_CODE_ERROR:
1678 fprintf_filtered (stream, "%s", TYPE_ERROR_NAME (type));
1679 break;
1680
1681 case TYPE_CODE_RANGE:
1682 /* This should not occur. */
1683 fprintf_styled (stream, metadata_style.style (), _("<range type>"));
1684 break;
1685
1686 case TYPE_CODE_NAMESPACE:
1687 fputs_filtered ("namespace ", stream);
1688 fputs_filtered (type->name (), stream);
1689 break;
1690
1691 default:
1692 /* Handle types not explicitly handled by the other cases, such
1693 as fundamental types. For these, just print whatever the
1694 type name is, as recorded in the type itself. If there is no
1695 type name, then complain. */
1696 if (type->name () != NULL)
1697 {
1698 c_type_print_modifier (type, stream, 0, 1, language);
1699 print_name_maybe_canonical (type->name (), flags, stream);
1700 }
1701 else
1702 {
1703 /* At least for dump_symtab, it is important that this not
1704 be an error (). */
1705 fprintf_styled (stream, metadata_style.style (),
1706 _("<invalid type code %d>"), type->code ());
1707 }
1708 break;
1709 }
1710 }
1711
1712 /* See c_type_print_base_1. */
1713
1714 void
1715 c_type_print_base (struct type *type, struct ui_file *stream,
1716 int show, int level,
1717 const struct type_print_options *flags)
1718 {
1719 struct print_offset_data podata;
1720
1721 c_type_print_base_1 (type, stream, show, level,
1722 current_language->la_language, flags, &podata);
1723 }
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