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1 /* Support for printing C and C++ types for GDB, the GNU debugger.
2 Copyright (C) 1986-2019 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);
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 std::string 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.empty () ? s.c_str () : 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 (type);
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 (type) == 0)
133 && (code == TYPE_CODE_PTR || code == TYPE_CODE_FUNC
134 || code == TYPE_CODE_METHOD
135 || (code == TYPE_CODE_ARRAY
136 && !TYPE_VECTOR (type))
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_filtered (varstring, 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, 0);
209 if (TYPE_NAME ((SYMBOL_TYPE (new_symbol))) == 0
210 || strcmp (TYPE_NAME ((SYMBOL_TYPE (new_symbol))),
211 SYMBOL_LINKAGE_NAME (new_symbol)) != 0
212 || TYPE_CODE (SYMBOL_TYPE (new_symbol)) == TYPE_CODE_TYPEDEF)
213 fprintf_filtered (stream, " %s", SYMBOL_PRINT_NAME (new_symbol));
214 fprintf_filtered (stream, ";\n");
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_NAME (TYPE_BASECLASS (type, i));
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 = TYPE_FIELDS (mtype);
281 int nargs = TYPE_NFIELDS (mtype);
282 int varargs = TYPE_VARARGS (mtype);
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 (TYPE_CODE (args[0].type) == 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, " restrict");
341
342 if (TYPE_ATOMIC (domain))
343 fprintf_filtered (stream, " _Atomic");
344 }
345 }
346
347
348 /* Print any asterisks or open-parentheses needed before the
349 variable name (to describe its type).
350
351 On outermost call, pass 0 for PASSED_A_PTR.
352 On outermost call, SHOW > 0 means should ignore
353 any typename for TYPE and show its details.
354 SHOW is always zero on recursive calls.
355
356 NEED_POST_SPACE is non-zero when a space will be be needed
357 between a trailing qualifier and a field, variable, or function
358 name. */
359
360 static void
361 c_type_print_varspec_prefix (struct type *type,
362 struct ui_file *stream,
363 int show, int passed_a_ptr,
364 int need_post_space,
365 enum language language,
366 const struct type_print_options *flags,
367 struct print_offset_data *podata)
368 {
369 const char *name;
370
371 if (type == 0)
372 return;
373
374 if (TYPE_NAME (type) && show <= 0)
375 return;
376
377 QUIT;
378
379 switch (TYPE_CODE (type))
380 {
381 case TYPE_CODE_PTR:
382 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
383 stream, show, 1, 1, language, flags,
384 podata);
385 fprintf_filtered (stream, "*");
386 c_type_print_modifier (type, stream, 1, need_post_space);
387 break;
388
389 case TYPE_CODE_MEMBERPTR:
390 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
391 stream, show, 0, 0, language, flags, podata);
392 name = TYPE_NAME (TYPE_SELF_TYPE (type));
393 if (name)
394 print_name_maybe_canonical (name, flags, stream);
395 else
396 c_type_print_base_1 (TYPE_SELF_TYPE (type),
397 stream, -1, passed_a_ptr, language, flags,
398 podata);
399 fprintf_filtered (stream, "::*");
400 break;
401
402 case TYPE_CODE_METHODPTR:
403 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
404 stream, show, 0, 0, language, flags,
405 podata);
406 fprintf_filtered (stream, "(");
407 name = TYPE_NAME (TYPE_SELF_TYPE (type));
408 if (name)
409 print_name_maybe_canonical (name, flags, stream);
410 else
411 c_type_print_base_1 (TYPE_SELF_TYPE (type),
412 stream, -1, passed_a_ptr, language, flags,
413 podata);
414 fprintf_filtered (stream, "::*");
415 break;
416
417 case TYPE_CODE_REF:
418 case TYPE_CODE_RVALUE_REF:
419 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
420 stream, show, 1, 0, language, flags,
421 podata);
422 fprintf_filtered (stream, TYPE_CODE(type) == TYPE_CODE_REF ? "&" : "&&");
423 c_type_print_modifier (type, stream, 1, need_post_space);
424 break;
425
426 case TYPE_CODE_METHOD:
427 case TYPE_CODE_FUNC:
428 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
429 stream, show, 0, 0, language, flags,
430 podata);
431 if (passed_a_ptr)
432 fprintf_filtered (stream, "(");
433 break;
434
435 case TYPE_CODE_ARRAY:
436 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
437 stream, show, 0, 0, language, flags,
438 podata);
439 if (passed_a_ptr)
440 fprintf_filtered (stream, "(");
441 break;
442
443 case TYPE_CODE_TYPEDEF:
444 c_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
445 stream, show, passed_a_ptr, 0,
446 language, flags, podata);
447 break;
448
449 case TYPE_CODE_UNDEF:
450 case TYPE_CODE_STRUCT:
451 case TYPE_CODE_UNION:
452 case TYPE_CODE_ENUM:
453 case TYPE_CODE_FLAGS:
454 case TYPE_CODE_INT:
455 case TYPE_CODE_FLT:
456 case TYPE_CODE_VOID:
457 case TYPE_CODE_ERROR:
458 case TYPE_CODE_CHAR:
459 case TYPE_CODE_BOOL:
460 case TYPE_CODE_SET:
461 case TYPE_CODE_RANGE:
462 case TYPE_CODE_STRING:
463 case TYPE_CODE_COMPLEX:
464 case TYPE_CODE_NAMESPACE:
465 case TYPE_CODE_DECFLOAT:
466 /* These types need no prefix. They are listed here so that
467 gcc -Wall will reveal any types that haven't been handled. */
468 break;
469 default:
470 error (_("type not handled in c_type_print_varspec_prefix()"));
471 break;
472 }
473 }
474
475 /* Print out "const" and "volatile" attributes,
476 and address space id if present.
477 TYPE is a pointer to the type being printed out.
478 STREAM is the output destination.
479 NEED_PRE_SPACE = 1 indicates an initial white space is needed.
480 NEED_POST_SPACE = 1 indicates a final white space is needed. */
481
482 static void
483 c_type_print_modifier (struct type *type, struct ui_file *stream,
484 int need_pre_space, int need_post_space)
485 {
486 int did_print_modifier = 0;
487 const char *address_space_id;
488
489 /* We don't print `const' qualifiers for references --- since all
490 operators affect the thing referenced, not the reference itself,
491 every reference is `const'. */
492 if (TYPE_CONST (type) && !TYPE_IS_REFERENCE (type))
493 {
494 if (need_pre_space)
495 fprintf_filtered (stream, " ");
496 fprintf_filtered (stream, "const");
497 did_print_modifier = 1;
498 }
499
500 if (TYPE_VOLATILE (type))
501 {
502 if (did_print_modifier || need_pre_space)
503 fprintf_filtered (stream, " ");
504 fprintf_filtered (stream, "volatile");
505 did_print_modifier = 1;
506 }
507
508 if (TYPE_RESTRICT (type))
509 {
510 if (did_print_modifier || need_pre_space)
511 fprintf_filtered (stream, " ");
512 fprintf_filtered (stream, "restrict");
513 did_print_modifier = 1;
514 }
515
516 if (TYPE_ATOMIC (type))
517 {
518 if (did_print_modifier || need_pre_space)
519 fprintf_filtered (stream, " ");
520 fprintf_filtered (stream, "_Atomic");
521 did_print_modifier = 1;
522 }
523
524 address_space_id = address_space_int_to_name (get_type_arch (type),
525 TYPE_INSTANCE_FLAGS (type));
526 if (address_space_id)
527 {
528 if (did_print_modifier || need_pre_space)
529 fprintf_filtered (stream, " ");
530 fprintf_filtered (stream, "@%s", address_space_id);
531 did_print_modifier = 1;
532 }
533
534 if (did_print_modifier && need_post_space)
535 fprintf_filtered (stream, " ");
536 }
537
538
539 /* Print out the arguments of TYPE, which should have TYPE_CODE_METHOD
540 or TYPE_CODE_FUNC, to STREAM. Artificial arguments, such as "this"
541 in non-static methods, are displayed if LINKAGE_NAME is zero. If
542 LINKAGE_NAME is non-zero and LANGUAGE is language_cplus the topmost
543 parameter types get removed their possible const and volatile qualifiers to
544 match demangled linkage name parameters part of such function type.
545 LANGUAGE is the language in which TYPE was defined. This is a necessary
546 evil since this code is used by the C and C++. */
547
548 void
549 c_type_print_args (struct type *type, struct ui_file *stream,
550 int linkage_name, enum language language,
551 const struct type_print_options *flags)
552 {
553 int i;
554 int printed_any = 0;
555
556 fprintf_filtered (stream, "(");
557
558 for (i = 0; i < TYPE_NFIELDS (type); i++)
559 {
560 struct type *param_type;
561
562 if (TYPE_FIELD_ARTIFICIAL (type, i) && linkage_name)
563 continue;
564
565 if (printed_any)
566 {
567 fprintf_filtered (stream, ", ");
568 wrap_here (" ");
569 }
570
571 param_type = TYPE_FIELD_TYPE (type, i);
572
573 if (language == language_cplus && linkage_name)
574 {
575 /* C++ standard, 13.1 Overloadable declarations, point 3, item:
576 - Parameter declarations that differ only in the presence or
577 absence of const and/or volatile are equivalent.
578
579 And the const/volatile qualifiers are not present in the mangled
580 names as produced by GCC. */
581
582 param_type = make_cv_type (0, 0, param_type, NULL);
583 }
584
585 c_print_type (param_type, "", stream, -1, 0, language, flags);
586 printed_any = 1;
587 }
588
589 if (printed_any && TYPE_VARARGS (type))
590 {
591 /* Print out a trailing ellipsis for varargs functions. Ignore
592 TYPE_VARARGS if the function has no named arguments; that
593 represents unprototyped (K&R style) C functions. */
594 if (printed_any && TYPE_VARARGS (type))
595 {
596 fprintf_filtered (stream, ", ");
597 wrap_here (" ");
598 fprintf_filtered (stream, "...");
599 }
600 }
601 else if (!printed_any
602 && (TYPE_PROTOTYPED (type) || language == language_cplus))
603 fprintf_filtered (stream, "void");
604
605 fprintf_filtered (stream, ")");
606 }
607
608 /* Return true iff the j'th overloading of the i'th method of TYPE
609 is a type conversion operator, like `operator int () { ... }'.
610 When listing a class's methods, we don't print the return type of
611 such operators. */
612
613 static int
614 is_type_conversion_operator (struct type *type, int i, int j)
615 {
616 /* I think the whole idea of recognizing type conversion operators
617 by their name is pretty terrible. But I don't think our present
618 data structure gives us any other way to tell. If you know of
619 some other way, feel free to rewrite this function. */
620 const char *name = TYPE_FN_FIELDLIST_NAME (type, i);
621
622 if (!startswith (name, CP_OPERATOR_STR))
623 return 0;
624
625 name += 8;
626 if (! strchr (" \t\f\n\r", *name))
627 return 0;
628
629 while (strchr (" \t\f\n\r", *name))
630 name++;
631
632 if (!('a' <= *name && *name <= 'z')
633 && !('A' <= *name && *name <= 'Z')
634 && *name != '_')
635 /* If this doesn't look like the start of an identifier, then it
636 isn't a type conversion operator. */
637 return 0;
638 else if (startswith (name, "new"))
639 name += 3;
640 else if (startswith (name, "delete"))
641 name += 6;
642 else
643 /* If it doesn't look like new or delete, it's a type conversion
644 operator. */
645 return 1;
646
647 /* Is that really the end of the name? */
648 if (('a' <= *name && *name <= 'z')
649 || ('A' <= *name && *name <= 'Z')
650 || ('0' <= *name && *name <= '9')
651 || *name == '_')
652 /* No, so the identifier following "operator" must be a type name,
653 and this is a type conversion operator. */
654 return 1;
655
656 /* That was indeed the end of the name, so it was `operator new' or
657 `operator delete', neither of which are type conversion
658 operators. */
659 return 0;
660 }
661
662 /* Given a C++ qualified identifier QID, strip off the qualifiers,
663 yielding the unqualified name. The return value is a pointer into
664 the original string.
665
666 It's a pity we don't have this information in some more structured
667 form. Even the author of this function feels that writing little
668 parsers like this everywhere is stupid. */
669
670 static char *
671 remove_qualifiers (char *qid)
672 {
673 int quoted = 0; /* Zero if we're not in quotes;
674 '"' if we're in a double-quoted string;
675 '\'' if we're in a single-quoted string. */
676 int depth = 0; /* Number of unclosed parens we've seen. */
677 char *parenstack = (char *) alloca (strlen (qid));
678 char *scan;
679 char *last = 0; /* The character after the rightmost
680 `::' token we've seen so far. */
681
682 for (scan = qid; *scan; scan++)
683 {
684 if (quoted)
685 {
686 if (*scan == quoted)
687 quoted = 0;
688 else if (*scan == '\\' && *(scan + 1))
689 scan++;
690 }
691 else if (scan[0] == ':' && scan[1] == ':')
692 {
693 /* If we're inside parenthesis (i.e., an argument list) or
694 angle brackets (i.e., a list of template arguments), then
695 we don't record the position of this :: token, since it's
696 not relevant to the top-level structure we're trying to
697 operate on. */
698 if (depth == 0)
699 {
700 last = scan + 2;
701 scan++;
702 }
703 }
704 else if (*scan == '"' || *scan == '\'')
705 quoted = *scan;
706 else if (*scan == '(')
707 parenstack[depth++] = ')';
708 else if (*scan == '[')
709 parenstack[depth++] = ']';
710 /* We're going to treat <> as a pair of matching characters,
711 since we're more likely to see those in template id's than
712 real less-than characters. What a crock. */
713 else if (*scan == '<')
714 parenstack[depth++] = '>';
715 else if (*scan == ')' || *scan == ']' || *scan == '>')
716 {
717 if (depth > 0 && parenstack[depth - 1] == *scan)
718 depth--;
719 else
720 {
721 /* We're going to do a little error recovery here. If
722 we don't find a match for *scan on the paren stack,
723 but there is something lower on the stack that does
724 match, we pop the stack to that point. */
725 int i;
726
727 for (i = depth - 1; i >= 0; i--)
728 if (parenstack[i] == *scan)
729 {
730 depth = i;
731 break;
732 }
733 }
734 }
735 }
736
737 if (last)
738 return last;
739 else
740 /* We didn't find any :: tokens at the top level, so declare the
741 whole thing an unqualified identifier. */
742 return qid;
743 }
744
745 /* Print any array sizes, function arguments or close parentheses
746 needed after the variable name (to describe its type).
747 Args work like c_type_print_varspec_prefix. */
748
749 static void
750 c_type_print_varspec_suffix (struct type *type,
751 struct ui_file *stream,
752 int show, int passed_a_ptr,
753 int demangled_args,
754 enum language language,
755 const struct type_print_options *flags)
756 {
757 if (type == 0)
758 return;
759
760 if (TYPE_NAME (type) && show <= 0)
761 return;
762
763 QUIT;
764
765 switch (TYPE_CODE (type))
766 {
767 case TYPE_CODE_ARRAY:
768 {
769 LONGEST low_bound, high_bound;
770 int is_vector = TYPE_VECTOR (type);
771
772 if (passed_a_ptr)
773 fprintf_filtered (stream, ")");
774
775 fprintf_filtered (stream, (is_vector ?
776 " __attribute__ ((vector_size(" : "["));
777 /* Bounds are not yet resolved, print a bounds placeholder instead. */
778 if (TYPE_HIGH_BOUND_KIND (TYPE_INDEX_TYPE (type)) == PROP_LOCEXPR
779 || TYPE_HIGH_BOUND_KIND (TYPE_INDEX_TYPE (type)) == PROP_LOCLIST)
780 fprintf_filtered (stream, "variable length");
781 else if (get_array_bounds (type, &low_bound, &high_bound))
782 fprintf_filtered (stream, "%s",
783 plongest (high_bound - low_bound + 1));
784 fprintf_filtered (stream, (is_vector ? ")))" : "]"));
785
786 c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream,
787 show, 0, 0, language, flags);
788 }
789 break;
790
791 case TYPE_CODE_MEMBERPTR:
792 c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream,
793 show, 0, 0, language, flags);
794 break;
795
796 case TYPE_CODE_METHODPTR:
797 fprintf_filtered (stream, ")");
798 c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream,
799 show, 0, 0, language, flags);
800 break;
801
802 case TYPE_CODE_PTR:
803 case TYPE_CODE_REF:
804 case TYPE_CODE_RVALUE_REF:
805 c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream,
806 show, 1, 0, language, flags);
807 break;
808
809 case TYPE_CODE_METHOD:
810 case TYPE_CODE_FUNC:
811 if (passed_a_ptr)
812 fprintf_filtered (stream, ")");
813 if (!demangled_args)
814 c_type_print_args (type, stream, 0, language, flags);
815 c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream,
816 show, passed_a_ptr, 0, language, flags);
817 break;
818
819 case TYPE_CODE_TYPEDEF:
820 c_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream,
821 show, passed_a_ptr, 0, language, flags);
822 break;
823
824 case TYPE_CODE_UNDEF:
825 case TYPE_CODE_STRUCT:
826 case TYPE_CODE_UNION:
827 case TYPE_CODE_FLAGS:
828 case TYPE_CODE_ENUM:
829 case TYPE_CODE_INT:
830 case TYPE_CODE_FLT:
831 case TYPE_CODE_VOID:
832 case TYPE_CODE_ERROR:
833 case TYPE_CODE_CHAR:
834 case TYPE_CODE_BOOL:
835 case TYPE_CODE_SET:
836 case TYPE_CODE_RANGE:
837 case TYPE_CODE_STRING:
838 case TYPE_CODE_COMPLEX:
839 case TYPE_CODE_NAMESPACE:
840 case TYPE_CODE_DECFLOAT:
841 /* These types do not need a suffix. They are listed so that
842 gcc -Wall will report types that may not have been
843 considered. */
844 break;
845 default:
846 error (_("type not handled in c_type_print_varspec_suffix()"));
847 break;
848 }
849 }
850
851 /* A helper for c_type_print_base that displays template
852 parameters and their bindings, if needed.
853
854 TABLE is the local bindings table to use. If NULL, no printing is
855 done. Note that, at this point, TABLE won't have any useful
856 information in it -- but it is also used as a flag to
857 print_name_maybe_canonical to activate searching the global typedef
858 table.
859
860 TYPE is the type whose template arguments are being displayed.
861
862 STREAM is the stream on which to print. */
863
864 static void
865 c_type_print_template_args (const struct type_print_options *flags,
866 struct type *type, struct ui_file *stream)
867 {
868 int first = 1, i;
869
870 if (flags->raw)
871 return;
872
873 for (i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i)
874 {
875 struct symbol *sym = TYPE_TEMPLATE_ARGUMENT (type, i);
876
877 if (SYMBOL_CLASS (sym) != LOC_TYPEDEF)
878 continue;
879
880 if (first)
881 {
882 wrap_here (" ");
883 fprintf_filtered (stream, _("[with %s = "),
884 SYMBOL_LINKAGE_NAME (sym));
885 first = 0;
886 }
887 else
888 {
889 fputs_filtered (", ", stream);
890 wrap_here (" ");
891 fprintf_filtered (stream, "%s = ", SYMBOL_LINKAGE_NAME (sym));
892 }
893
894 c_print_type (SYMBOL_TYPE (sym), "", stream, -1, 0, flags);
895 }
896
897 if (!first)
898 fputs_filtered (_("] "), stream);
899 }
900
901 /* Use 'print_spaces_filtered', but take into consideration the
902 type_print_options FLAGS in order to determine how many whitespaces
903 will be printed. */
904
905 static void
906 print_spaces_filtered_with_print_options
907 (int level, struct ui_file *stream, const struct type_print_options *flags)
908 {
909 if (!flags->print_offsets)
910 print_spaces_filtered (level, stream);
911 else
912 print_spaces_filtered (level + print_offset_data::indentation, stream);
913 }
914
915 /* Output an access specifier to STREAM, if needed. LAST_ACCESS is the
916 last access specifier output (typically returned by this function). */
917
918 static enum access_specifier
919 output_access_specifier (struct ui_file *stream,
920 enum access_specifier last_access,
921 int level, bool is_protected, bool is_private,
922 const struct type_print_options *flags)
923 {
924 if (is_protected)
925 {
926 if (last_access != s_protected)
927 {
928 last_access = s_protected;
929 print_spaces_filtered_with_print_options (level + 2, stream, flags);
930 fprintf_filtered (stream, "protected:\n");
931 }
932 }
933 else if (is_private)
934 {
935 if (last_access != s_private)
936 {
937 last_access = s_private;
938 print_spaces_filtered_with_print_options (level + 2, stream, flags);
939 fprintf_filtered (stream, "private:\n");
940 }
941 }
942 else
943 {
944 if (last_access != s_public)
945 {
946 last_access = s_public;
947 print_spaces_filtered_with_print_options (level + 2, stream, flags);
948 fprintf_filtered (stream, "public:\n");
949 }
950 }
951
952 return last_access;
953 }
954
955 /* Return true if an access label (i.e., "public:", "private:",
956 "protected:") needs to be printed for TYPE. */
957
958 static bool
959 need_access_label_p (struct type *type)
960 {
961 if (TYPE_DECLARED_CLASS (type))
962 {
963 QUIT;
964 for (int i = TYPE_N_BASECLASSES (type); i < TYPE_NFIELDS (type); i++)
965 if (!TYPE_FIELD_PRIVATE (type, i))
966 return true;
967 QUIT;
968 for (int j = 0; j < TYPE_NFN_FIELDS (type); j++)
969 for (int i = 0; i < TYPE_FN_FIELDLIST_LENGTH (type, j); i++)
970 if (!TYPE_FN_FIELD_PRIVATE (TYPE_FN_FIELDLIST1 (type,
971 j), i))
972 return true;
973 QUIT;
974 for (int i = 0; i < TYPE_TYPEDEF_FIELD_COUNT (type); ++i)
975 if (!TYPE_TYPEDEF_FIELD_PRIVATE (type, i))
976 return true;
977 }
978 else
979 {
980 QUIT;
981 for (int i = TYPE_N_BASECLASSES (type); i < TYPE_NFIELDS (type); i++)
982 if (TYPE_FIELD_PRIVATE (type, i) || TYPE_FIELD_PROTECTED (type, i))
983 return true;
984 QUIT;
985 for (int j = 0; j < TYPE_NFN_FIELDS (type); j++)
986 {
987 QUIT;
988 for (int i = 0; i < TYPE_FN_FIELDLIST_LENGTH (type, j); i++)
989 if (TYPE_FN_FIELD_PROTECTED (TYPE_FN_FIELDLIST1 (type,
990 j), i)
991 || TYPE_FN_FIELD_PRIVATE (TYPE_FN_FIELDLIST1 (type,
992 j),
993 i))
994 return true;
995 }
996 QUIT;
997 for (int i = 0; i < TYPE_TYPEDEF_FIELD_COUNT (type); ++i)
998 if (TYPE_TYPEDEF_FIELD_PROTECTED (type, i)
999 || TYPE_TYPEDEF_FIELD_PRIVATE (type, i))
1000 return true;
1001 }
1002
1003 return false;
1004 }
1005
1006 /* Helper function that temporarily disables FLAGS->PRINT_OFFSETS,
1007 calls 'c_print_type_1', and then reenables FLAGS->PRINT_OFFSETS if
1008 applicable. */
1009
1010 static void
1011 c_print_type_no_offsets (struct type *type,
1012 const char *varstring,
1013 struct ui_file *stream,
1014 int show, int level,
1015 enum language language,
1016 struct type_print_options *flags,
1017 struct print_offset_data *podata)
1018 {
1019 unsigned int old_po = flags->print_offsets;
1020
1021 /* Temporarily disable print_offsets, because it would mess with
1022 indentation. */
1023 flags->print_offsets = 0;
1024 c_print_type_1 (type, varstring, stream, show, level, language, flags,
1025 podata);
1026 flags->print_offsets = old_po;
1027 }
1028
1029 /* Helper for 'c_type_print_base' that handles structs and unions.
1030 For a description of the arguments, see 'c_type_print_base'. */
1031
1032 static void
1033 c_type_print_base_struct_union (struct type *type, struct ui_file *stream,
1034 int show, int level,
1035 enum language language,
1036 const struct type_print_options *flags,
1037 struct print_offset_data *podata)
1038 {
1039 struct type_print_options local_flags = *flags;
1040 local_flags.local_typedefs = NULL;
1041
1042 std::unique_ptr<typedef_hash_table> hash_holder;
1043 if (!flags->raw)
1044 {
1045 if (flags->local_typedefs)
1046 local_flags.local_typedefs
1047 = new typedef_hash_table (*flags->local_typedefs);
1048 else
1049 local_flags.local_typedefs = new typedef_hash_table ();
1050
1051 hash_holder.reset (local_flags.local_typedefs);
1052 }
1053
1054 c_type_print_modifier (type, stream, 0, 1);
1055 if (TYPE_CODE (type) == TYPE_CODE_UNION)
1056 fprintf_filtered (stream, "union ");
1057 else if (TYPE_DECLARED_CLASS (type))
1058 fprintf_filtered (stream, "class ");
1059 else
1060 fprintf_filtered (stream, "struct ");
1061
1062 /* Print the tag if it exists. The HP aCC compiler emits a
1063 spurious "{unnamed struct}"/"{unnamed union}"/"{unnamed
1064 enum}" tag for unnamed struct/union/enum's, which we don't
1065 want to print. */
1066 if (TYPE_NAME (type) != NULL
1067 && !startswith (TYPE_NAME (type), "{unnamed"))
1068 {
1069 /* When printing the tag name, we are still effectively
1070 printing in the outer context, hence the use of FLAGS
1071 here. */
1072 print_name_maybe_canonical (TYPE_NAME (type), flags, stream);
1073 if (show > 0)
1074 fputs_filtered (" ", stream);
1075 }
1076
1077 if (show < 0)
1078 {
1079 /* If we just printed a tag name, no need to print anything
1080 else. */
1081 if (TYPE_NAME (type) == NULL)
1082 fprintf_filtered (stream, "{...}");
1083 }
1084 else if (show > 0 || TYPE_NAME (type) == NULL)
1085 {
1086 struct type *basetype;
1087 int vptr_fieldno;
1088
1089 c_type_print_template_args (&local_flags, type, stream);
1090
1091 /* Add in template parameters when printing derivation info. */
1092 if (local_flags.local_typedefs != NULL)
1093 local_flags.local_typedefs->add_template_parameters (type);
1094 cp_type_print_derivation_info (stream, type, &local_flags);
1095
1096 /* This holds just the global typedefs and the template
1097 parameters. */
1098 struct type_print_options semi_local_flags = *flags;
1099 semi_local_flags.local_typedefs = NULL;
1100
1101 std::unique_ptr<typedef_hash_table> semi_holder;
1102 if (local_flags.local_typedefs != nullptr)
1103 {
1104 semi_local_flags.local_typedefs
1105 = new typedef_hash_table (*local_flags.local_typedefs);
1106 semi_holder.reset (semi_local_flags.local_typedefs);
1107
1108 /* Now add in the local typedefs. */
1109 local_flags.local_typedefs->recursively_update (type);
1110 }
1111
1112 fprintf_filtered (stream, "{\n");
1113
1114 if (TYPE_NFIELDS (type) == 0 && TYPE_NFN_FIELDS (type) == 0
1115 && TYPE_TYPEDEF_FIELD_COUNT (type) == 0)
1116 {
1117 if (TYPE_STUB (type))
1118 fprintfi_filtered (level + 4, stream,
1119 _("<incomplete type>\n"));
1120 else
1121 fprintfi_filtered (level + 4, stream,
1122 _("<no data fields>\n"));
1123 }
1124
1125 /* Start off with no specific section type, so we can print
1126 one for the first field we find, and use that section type
1127 thereafter until we find another type. */
1128
1129 enum access_specifier section_type = s_none;
1130
1131 /* For a class, if all members are private, there's no need
1132 for a "private:" label; similarly, for a struct or union
1133 masquerading as a class, if all members are public, there's
1134 no need for a "public:" label. */
1135 bool need_access_label = need_access_label_p (type);
1136
1137 /* If there is a base class for this type,
1138 do not print the field that it occupies. */
1139
1140 int len = TYPE_NFIELDS (type);
1141 vptr_fieldno = get_vptr_fieldno (type, &basetype);
1142
1143 struct print_offset_data local_podata;
1144
1145 for (int i = TYPE_N_BASECLASSES (type); i < len; i++)
1146 {
1147 QUIT;
1148
1149 /* If we have a virtual table pointer, omit it. Even if
1150 virtual table pointers are not specifically marked in
1151 the debug info, they should be artificial. */
1152 if ((i == vptr_fieldno && type == basetype)
1153 || TYPE_FIELD_ARTIFICIAL (type, i))
1154 continue;
1155
1156 if (need_access_label)
1157 {
1158 section_type = output_access_specifier
1159 (stream, section_type, level,
1160 TYPE_FIELD_PROTECTED (type, i),
1161 TYPE_FIELD_PRIVATE (type, i), flags);
1162 }
1163
1164 bool is_static = field_is_static (&TYPE_FIELD (type, i));
1165
1166 if (flags->print_offsets)
1167 podata->update (type, i, stream);
1168
1169 print_spaces_filtered (level + 4, stream);
1170 if (is_static)
1171 fprintf_filtered (stream, "static ");
1172
1173 int newshow = show - 1;
1174
1175 if (!is_static && flags->print_offsets
1176 && (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_STRUCT
1177 || TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_UNION))
1178 {
1179 /* If we're printing offsets and this field's type is
1180 either a struct or an union, then we're interested in
1181 expanding it. */
1182 ++newshow;
1183
1184 /* Make sure we carry our offset when we expand the
1185 struct/union. */
1186 local_podata.offset_bitpos
1187 = podata->offset_bitpos + TYPE_FIELD_BITPOS (type, i);
1188 /* We're entering a struct/union. Right now,
1189 PODATA->END_BITPOS points right *after* the
1190 struct/union. However, when printing the first field
1191 of this inner struct/union, the end_bitpos we're
1192 expecting is exactly at the beginning of the
1193 struct/union. Therefore, we subtract the length of
1194 the whole struct/union. */
1195 local_podata.end_bitpos
1196 = podata->end_bitpos
1197 - TYPE_LENGTH (TYPE_FIELD_TYPE (type, i)) * TARGET_CHAR_BIT;
1198 }
1199
1200 c_print_type_1 (TYPE_FIELD_TYPE (type, i),
1201 TYPE_FIELD_NAME (type, i),
1202 stream, newshow, level + 4,
1203 language, &local_flags, &local_podata);
1204
1205 if (!is_static && TYPE_FIELD_PACKED (type, i))
1206 {
1207 /* It is a bitfield. This code does not attempt
1208 to look at the bitpos and reconstruct filler,
1209 unnamed fields. This would lead to misleading
1210 results if the compiler does not put out fields
1211 for such things (I don't know what it does). */
1212 fprintf_filtered (stream, " : %d",
1213 TYPE_FIELD_BITSIZE (type, i));
1214 }
1215 fprintf_filtered (stream, ";\n");
1216 }
1217
1218 /* If there are both fields and methods, put a blank line
1219 between them. Make sure to count only method that we
1220 will display; artificial methods will be hidden. */
1221 len = TYPE_NFN_FIELDS (type);
1222 if (!flags->print_methods)
1223 len = 0;
1224 int real_len = 0;
1225 for (int i = 0; i < len; i++)
1226 {
1227 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, i);
1228 int len2 = TYPE_FN_FIELDLIST_LENGTH (type, i);
1229 int j;
1230
1231 for (j = 0; j < len2; j++)
1232 if (!TYPE_FN_FIELD_ARTIFICIAL (f, j))
1233 real_len++;
1234 }
1235 if (real_len > 0 && section_type != s_none)
1236 fprintf_filtered (stream, "\n");
1237
1238 /* C++: print out the methods. */
1239 for (int i = 0; i < len; i++)
1240 {
1241 struct fn_field *f = TYPE_FN_FIELDLIST1 (type, i);
1242 int j, len2 = TYPE_FN_FIELDLIST_LENGTH (type, i);
1243 const char *method_name = TYPE_FN_FIELDLIST_NAME (type, i);
1244 const char *name = TYPE_NAME (type);
1245 int is_constructor = name && strcmp (method_name,
1246 name) == 0;
1247
1248 for (j = 0; j < len2; j++)
1249 {
1250 const char *mangled_name;
1251 gdb::unique_xmalloc_ptr<char> mangled_name_holder;
1252 char *demangled_name;
1253 const char *physname = TYPE_FN_FIELD_PHYSNAME (f, j);
1254 int is_full_physname_constructor =
1255 TYPE_FN_FIELD_CONSTRUCTOR (f, j)
1256 || is_constructor_name (physname)
1257 || is_destructor_name (physname)
1258 || method_name[0] == '~';
1259
1260 /* Do not print out artificial methods. */
1261 if (TYPE_FN_FIELD_ARTIFICIAL (f, j))
1262 continue;
1263
1264 QUIT;
1265 section_type = output_access_specifier
1266 (stream, section_type, level,
1267 TYPE_FN_FIELD_PROTECTED (f, j),
1268 TYPE_FN_FIELD_PRIVATE (f, j), flags);
1269
1270 print_spaces_filtered_with_print_options (level + 4, stream,
1271 flags);
1272 if (TYPE_FN_FIELD_VIRTUAL_P (f, j))
1273 fprintf_filtered (stream, "virtual ");
1274 else if (TYPE_FN_FIELD_STATIC_P (f, j))
1275 fprintf_filtered (stream, "static ");
1276 if (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)) == 0)
1277 {
1278 /* Keep GDB from crashing here. */
1279 fprintf_filtered (stream,
1280 _("<undefined type> %s;\n"),
1281 TYPE_FN_FIELD_PHYSNAME (f, j));
1282 break;
1283 }
1284 else if (!is_constructor /* Constructors don't
1285 have declared
1286 types. */
1287 && !is_full_physname_constructor /* " " */
1288 && !is_type_conversion_operator (type, i, j))
1289 {
1290 c_print_type_no_offsets
1291 (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)),
1292 "", stream, -1, 0, language, &local_flags, podata);
1293
1294 fputs_filtered (" ", stream);
1295 }
1296 if (TYPE_FN_FIELD_STUB (f, j))
1297 {
1298 /* Build something we can demangle. */
1299 mangled_name_holder.reset (gdb_mangle_name (type, i, j));
1300 mangled_name = mangled_name_holder.get ();
1301 }
1302 else
1303 mangled_name = TYPE_FN_FIELD_PHYSNAME (f, j);
1304
1305 demangled_name =
1306 gdb_demangle (mangled_name,
1307 DMGL_ANSI | DMGL_PARAMS);
1308 if (demangled_name == NULL)
1309 {
1310 /* In some cases (for instance with the HP
1311 demangling), if a function has more than 10
1312 arguments, the demangling will fail.
1313 Let's try to reconstruct the function
1314 signature from the symbol information. */
1315 if (!TYPE_FN_FIELD_STUB (f, j))
1316 {
1317 int staticp = TYPE_FN_FIELD_STATIC_P (f, j);
1318 struct type *mtype = TYPE_FN_FIELD_TYPE (f, j);
1319
1320 cp_type_print_method_args (mtype,
1321 "",
1322 method_name,
1323 staticp,
1324 stream, language,
1325 &local_flags);
1326 }
1327 else
1328 fprintf_filtered (stream,
1329 _("<badly mangled name '%s'>"),
1330 mangled_name);
1331 }
1332 else
1333 {
1334 char *p;
1335 char *demangled_no_class
1336 = remove_qualifiers (demangled_name);
1337
1338 /* Get rid of the `static' appended by the
1339 demangler. */
1340 p = strstr (demangled_no_class, " static");
1341 if (p != NULL)
1342 {
1343 int length = p - demangled_no_class;
1344 char *demangled_no_static;
1345
1346 demangled_no_static
1347 = (char *) xmalloc (length + 1);
1348 strncpy (demangled_no_static,
1349 demangled_no_class, length);
1350 *(demangled_no_static + length) = '\0';
1351 fputs_filtered (demangled_no_static, stream);
1352 xfree (demangled_no_static);
1353 }
1354 else
1355 fputs_filtered (demangled_no_class, stream);
1356 xfree (demangled_name);
1357 }
1358
1359 fprintf_filtered (stream, ";\n");
1360 }
1361 }
1362
1363 /* Print out nested types. */
1364 if (TYPE_NESTED_TYPES_COUNT (type) != 0
1365 && semi_local_flags.print_nested_type_limit != 0)
1366 {
1367 if (semi_local_flags.print_nested_type_limit > 0)
1368 --semi_local_flags.print_nested_type_limit;
1369
1370 if (TYPE_NFIELDS (type) != 0 || TYPE_NFN_FIELDS (type) != 0)
1371 fprintf_filtered (stream, "\n");
1372
1373 for (int i = 0; i < TYPE_NESTED_TYPES_COUNT (type); ++i)
1374 {
1375 print_spaces_filtered_with_print_options (level + 4, stream,
1376 flags);
1377 c_print_type_no_offsets (TYPE_NESTED_TYPES_FIELD_TYPE (type, i),
1378 "", stream, show, level + 4,
1379 language, &semi_local_flags, podata);
1380 fprintf_filtered (stream, ";\n");
1381 }
1382 }
1383
1384 /* Print typedefs defined in this class. */
1385
1386 if (TYPE_TYPEDEF_FIELD_COUNT (type) != 0 && flags->print_typedefs)
1387 {
1388 if (TYPE_NFIELDS (type) != 0 || TYPE_NFN_FIELDS (type) != 0
1389 || TYPE_NESTED_TYPES_COUNT (type) != 0)
1390 fprintf_filtered (stream, "\n");
1391
1392 for (int i = 0; i < TYPE_TYPEDEF_FIELD_COUNT (type); i++)
1393 {
1394 struct type *target = TYPE_TYPEDEF_FIELD_TYPE (type, i);
1395
1396 /* Dereference the typedef declaration itself. */
1397 gdb_assert (TYPE_CODE (target) == TYPE_CODE_TYPEDEF);
1398 target = TYPE_TARGET_TYPE (target);
1399
1400 if (need_access_label)
1401 {
1402 section_type = output_access_specifier
1403 (stream, section_type, level,
1404 TYPE_TYPEDEF_FIELD_PROTECTED (type, i),
1405 TYPE_TYPEDEF_FIELD_PRIVATE (type, i), flags);
1406 }
1407 print_spaces_filtered_with_print_options (level + 4, stream,
1408 flags);
1409 fprintf_filtered (stream, "typedef ");
1410
1411 /* We want to print typedefs with substitutions
1412 from the template parameters or globally-known
1413 typedefs but not local typedefs. */
1414 c_print_type_no_offsets (target,
1415 TYPE_TYPEDEF_FIELD_NAME (type, i),
1416 stream, show - 1, level + 4,
1417 language, &semi_local_flags, podata);
1418 fprintf_filtered (stream, ";\n");
1419 }
1420 }
1421
1422 if (flags->print_offsets)
1423 {
1424 if (show > 0)
1425 podata->finish (type, level, stream);
1426
1427 print_spaces_filtered (print_offset_data::indentation, stream);
1428 if (level == 0)
1429 print_spaces_filtered (2, stream);
1430 }
1431
1432 fprintfi_filtered (level, stream, "}");
1433 }
1434 }
1435
1436 /* Print the name of the type (or the ultimate pointer target,
1437 function value or array element), or the description of a structure
1438 or union.
1439
1440 SHOW positive means print details about the type (e.g. enum
1441 values), and print structure elements passing SHOW - 1 for show.
1442
1443 SHOW negative means just print the type name or struct tag if there
1444 is one. If there is no name, print something sensible but concise
1445 like "struct {...}".
1446
1447 SHOW zero means just print the type name or struct tag if there is
1448 one. If there is no name, print something sensible but not as
1449 concise like "struct {int x; int y;}".
1450
1451 LEVEL is the number of spaces to indent by.
1452 We increase it for some recursive calls. */
1453
1454 static void
1455 c_type_print_base_1 (struct type *type, struct ui_file *stream,
1456 int show, int level,
1457 enum language language,
1458 const struct type_print_options *flags,
1459 struct print_offset_data *podata)
1460 {
1461 int i;
1462 int len;
1463
1464 QUIT;
1465
1466 if (type == NULL)
1467 {
1468 fputs_filtered (_("<type unknown>"), stream);
1469 return;
1470 }
1471
1472 /* When SHOW is zero or less, and there is a valid type name, then
1473 always just print the type name directly from the type. */
1474
1475 if (show <= 0
1476 && TYPE_NAME (type) != NULL)
1477 {
1478 c_type_print_modifier (type, stream, 0, 1);
1479
1480 /* If we have "typedef struct foo {. . .} bar;" do we want to
1481 print it as "struct foo" or as "bar"? Pick the latter for
1482 C++, because C++ folk tend to expect things like "class5
1483 *foo" rather than "struct class5 *foo". We rather
1484 arbitrarily choose to make language_minimal work in a C-like
1485 way. */
1486 if (language == language_c || language == language_minimal)
1487 {
1488 if (TYPE_CODE (type) == TYPE_CODE_UNION)
1489 fprintf_filtered (stream, "union ");
1490 else if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
1491 {
1492 if (TYPE_DECLARED_CLASS (type))
1493 fprintf_filtered (stream, "class ");
1494 else
1495 fprintf_filtered (stream, "struct ");
1496 }
1497 else if (TYPE_CODE (type) == TYPE_CODE_ENUM)
1498 fprintf_filtered (stream, "enum ");
1499 }
1500
1501 print_name_maybe_canonical (TYPE_NAME (type), flags, stream);
1502 return;
1503 }
1504
1505 type = check_typedef (type);
1506
1507 switch (TYPE_CODE (type))
1508 {
1509 case TYPE_CODE_TYPEDEF:
1510 /* If we get here, the typedef doesn't have a name, and we
1511 couldn't resolve TYPE_TARGET_TYPE. Not much we can do. */
1512 gdb_assert (TYPE_NAME (type) == NULL);
1513 gdb_assert (TYPE_TARGET_TYPE (type) == NULL);
1514 fprintf_filtered (stream, _("<unnamed typedef>"));
1515 break;
1516
1517 case TYPE_CODE_FUNC:
1518 case TYPE_CODE_METHOD:
1519 if (TYPE_TARGET_TYPE (type) == NULL)
1520 type_print_unknown_return_type (stream);
1521 else
1522 c_type_print_base_1 (TYPE_TARGET_TYPE (type),
1523 stream, show, level, language, flags, podata);
1524 break;
1525 case TYPE_CODE_ARRAY:
1526 case TYPE_CODE_PTR:
1527 case TYPE_CODE_MEMBERPTR:
1528 case TYPE_CODE_REF:
1529 case TYPE_CODE_RVALUE_REF:
1530 case TYPE_CODE_METHODPTR:
1531 c_type_print_base_1 (TYPE_TARGET_TYPE (type),
1532 stream, show, level, language, flags, podata);
1533 break;
1534
1535 case TYPE_CODE_STRUCT:
1536 case TYPE_CODE_UNION:
1537 c_type_print_base_struct_union (type, stream, show, level,
1538 language, flags, podata);
1539 break;
1540
1541 case TYPE_CODE_ENUM:
1542 c_type_print_modifier (type, stream, 0, 1);
1543 fprintf_filtered (stream, "enum ");
1544 if (TYPE_DECLARED_CLASS (type))
1545 fprintf_filtered (stream, "class ");
1546 /* Print the tag name if it exists.
1547 The aCC compiler emits a spurious
1548 "{unnamed struct}"/"{unnamed union}"/"{unnamed enum}"
1549 tag for unnamed struct/union/enum's, which we don't
1550 want to print. */
1551 if (TYPE_NAME (type) != NULL
1552 && !startswith (TYPE_NAME (type), "{unnamed"))
1553 {
1554 print_name_maybe_canonical (TYPE_NAME (type), flags, stream);
1555 if (show > 0)
1556 fputs_filtered (" ", stream);
1557 }
1558
1559 wrap_here (" ");
1560 if (show < 0)
1561 {
1562 /* If we just printed a tag name, no need to print anything
1563 else. */
1564 if (TYPE_NAME (type) == NULL)
1565 fprintf_filtered (stream, "{...}");
1566 }
1567 else if (show > 0 || TYPE_NAME (type) == NULL)
1568 {
1569 LONGEST lastval = 0;
1570
1571 /* We can't handle this case perfectly, as DWARF does not
1572 tell us whether or not the underlying type was specified
1573 in the source (and other debug formats don't provide this
1574 at all). We choose to print the underlying type, if it
1575 has a name, when in C++ on the theory that it's better to
1576 print too much than too little; but conversely not to
1577 print something egregiously outside the current
1578 language's syntax. */
1579 if (language == language_cplus && TYPE_TARGET_TYPE (type) != NULL)
1580 {
1581 struct type *underlying = check_typedef (TYPE_TARGET_TYPE (type));
1582
1583 if (TYPE_NAME (underlying) != NULL)
1584 fprintf_filtered (stream, ": %s ", TYPE_NAME (underlying));
1585 }
1586
1587 fprintf_filtered (stream, "{");
1588 len = TYPE_NFIELDS (type);
1589 for (i = 0; i < len; i++)
1590 {
1591 QUIT;
1592 if (i)
1593 fprintf_filtered (stream, ", ");
1594 wrap_here (" ");
1595 fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
1596 if (lastval != TYPE_FIELD_ENUMVAL (type, i))
1597 {
1598 fprintf_filtered (stream, " = %s",
1599 plongest (TYPE_FIELD_ENUMVAL (type, i)));
1600 lastval = TYPE_FIELD_ENUMVAL (type, i);
1601 }
1602 lastval++;
1603 }
1604 fprintf_filtered (stream, "}");
1605 }
1606 break;
1607
1608 case TYPE_CODE_FLAGS:
1609 {
1610 struct type_print_options local_flags = *flags;
1611
1612 local_flags.local_typedefs = NULL;
1613
1614 c_type_print_modifier (type, stream, 0, 1);
1615 fprintf_filtered (stream, "flag ");
1616 print_name_maybe_canonical (TYPE_NAME (type), flags, stream);
1617 if (show > 0)
1618 {
1619 fputs_filtered (" ", stream);
1620 fprintf_filtered (stream, "{\n");
1621 if (TYPE_NFIELDS (type) == 0)
1622 {
1623 if (TYPE_STUB (type))
1624 fprintfi_filtered (level + 4, stream,
1625 _("<incomplete type>\n"));
1626 else
1627 fprintfi_filtered (level + 4, stream,
1628 _("<no data fields>\n"));
1629 }
1630 len = TYPE_NFIELDS (type);
1631 for (i = 0; i < len; i++)
1632 {
1633 QUIT;
1634 print_spaces_filtered (level + 4, stream);
1635 /* We pass "show" here and not "show - 1" to get enum types
1636 printed. There's no other way to see them. */
1637 c_print_type_1 (TYPE_FIELD_TYPE (type, i),
1638 TYPE_FIELD_NAME (type, i),
1639 stream, show, level + 4,
1640 language, &local_flags, podata);
1641 fprintf_filtered (stream, " @%s",
1642 plongest (TYPE_FIELD_BITPOS (type, i)));
1643 if (TYPE_FIELD_BITSIZE (type, i) > 1)
1644 {
1645 fprintf_filtered (stream, "-%s",
1646 plongest (TYPE_FIELD_BITPOS (type, i)
1647 + TYPE_FIELD_BITSIZE (type, i)
1648 - 1));
1649 }
1650 fprintf_filtered (stream, ";\n");
1651 }
1652 fprintfi_filtered (level, stream, "}");
1653 }
1654 }
1655 break;
1656
1657 case TYPE_CODE_VOID:
1658 fprintf_filtered (stream, "void");
1659 break;
1660
1661 case TYPE_CODE_UNDEF:
1662 fprintf_filtered (stream, _("struct <unknown>"));
1663 break;
1664
1665 case TYPE_CODE_ERROR:
1666 fprintf_filtered (stream, "%s", TYPE_ERROR_NAME (type));
1667 break;
1668
1669 case TYPE_CODE_RANGE:
1670 /* This should not occur. */
1671 fprintf_filtered (stream, _("<range type>"));
1672 break;
1673
1674 case TYPE_CODE_NAMESPACE:
1675 fputs_filtered ("namespace ", stream);
1676 fputs_filtered (TYPE_NAME (type), stream);
1677 break;
1678
1679 default:
1680 /* Handle types not explicitly handled by the other cases, such
1681 as fundamental types. For these, just print whatever the
1682 type name is, as recorded in the type itself. If there is no
1683 type name, then complain. */
1684 if (TYPE_NAME (type) != NULL)
1685 {
1686 c_type_print_modifier (type, stream, 0, 1);
1687 print_name_maybe_canonical (TYPE_NAME (type), flags, stream);
1688 }
1689 else
1690 {
1691 /* At least for dump_symtab, it is important that this not
1692 be an error (). */
1693 fprintf_filtered (stream, _("<invalid type code %d>"),
1694 TYPE_CODE (type));
1695 }
1696 break;
1697 }
1698 }
1699
1700 /* See c_type_print_base_1. */
1701
1702 void
1703 c_type_print_base (struct type *type, struct ui_file *stream,
1704 int show, int level,
1705 const struct type_print_options *flags)
1706 {
1707 struct print_offset_data podata;
1708
1709 c_type_print_base_1 (type, stream, show, level,
1710 current_language->la_language, flags, &podata);
1711 }