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c906108c | 1 | /* Language independent support for printing types for GDB, the GNU debugger. |
1bac305b | 2 | |
e2882c85 | 3 | Copyright (C) 1986-2018 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
04ea0df1 | 21 | #include "gdb_obstack.h" |
c906108c SS |
22 | #include "bfd.h" /* Binary File Description */ |
23 | #include "symtab.h" | |
24 | #include "gdbtypes.h" | |
25 | #include "expression.h" | |
26 | #include "value.h" | |
27 | #include "gdbcore.h" | |
28 | #include "command.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "target.h" | |
31 | #include "language.h" | |
015a42b4 | 32 | #include "cp-abi.h" |
b9362cc7 | 33 | #include "typeprint.h" |
79a45b7d | 34 | #include "valprint.h" |
53342f27 TT |
35 | #include <ctype.h> |
36 | #include "cli/cli-utils.h" | |
6dddc817 | 37 | #include "extension.h" |
4fc5d43e | 38 | #include "completer.h" |
c906108c | 39 | |
79d43c61 TT |
40 | const struct type_print_options type_print_raw_options = |
41 | { | |
53342f27 TT |
42 | 1, /* raw */ |
43 | 1, /* print_methods */ | |
bd69fc68 | 44 | 1, /* print_typedefs */ |
7c161838 | 45 | 0, /* print_offsets */ |
883fd55a | 46 | 0, /* print_nested_type_limit */ |
18a9fc12 TT |
47 | NULL, /* local_typedefs */ |
48 | NULL, /* global_table */ | |
49 | NULL /* global_printers */ | |
79d43c61 TT |
50 | }; |
51 | ||
52 | /* The default flags for 'ptype' and 'whatis'. */ | |
53 | ||
54 | static struct type_print_options default_ptype_flags = | |
55 | { | |
53342f27 TT |
56 | 0, /* raw */ |
57 | 1, /* print_methods */ | |
bd69fc68 | 58 | 1, /* print_typedefs */ |
7c161838 | 59 | 0, /* print_offsets */ |
883fd55a | 60 | 0, /* print_nested_type_limit */ |
18a9fc12 TT |
61 | NULL, /* local_typedefs */ |
62 | NULL, /* global_table */ | |
63 | NULL /* global_printers */ | |
79d43c61 | 64 | }; |
5c6ce71d | 65 | |
53342f27 TT |
66 | \f |
67 | ||
bd69fc68 TT |
68 | /* A hash table holding typedef_field objects. This is more |
69 | complicated than an ordinary hash because it must also track the | |
70 | lifetime of some -- but not all -- of the contained objects. */ | |
71 | ||
72 | struct typedef_hash_table | |
73 | { | |
74 | /* The actual hash table. */ | |
75 | htab_t table; | |
76 | ||
77 | /* Storage for typedef_field objects that must be synthesized. */ | |
78 | struct obstack storage; | |
79 | }; | |
80 | ||
81 | /* A hash function for a typedef_field. */ | |
82 | ||
83 | static hashval_t | |
84 | hash_typedef_field (const void *p) | |
85 | { | |
883fd55a | 86 | const struct decl_field *tf = (const struct decl_field *) p; |
bd69fc68 TT |
87 | struct type *t = check_typedef (tf->type); |
88 | ||
89 | return htab_hash_string (TYPE_SAFE_NAME (t)); | |
90 | } | |
91 | ||
92 | /* An equality function for a typedef field. */ | |
93 | ||
94 | static int | |
95 | eq_typedef_field (const void *a, const void *b) | |
96 | { | |
883fd55a KS |
97 | const struct decl_field *tfa = (const struct decl_field *) a; |
98 | const struct decl_field *tfb = (const struct decl_field *) b; | |
bd69fc68 TT |
99 | |
100 | return types_equal (tfa->type, tfb->type); | |
101 | } | |
102 | ||
103 | /* Add typedefs from T to the hash table TABLE. */ | |
104 | ||
105 | void | |
106 | recursively_update_typedef_hash (struct typedef_hash_table *table, | |
107 | struct type *t) | |
108 | { | |
109 | int i; | |
110 | ||
111 | if (table == NULL) | |
112 | return; | |
113 | ||
114 | for (i = 0; i < TYPE_TYPEDEF_FIELD_COUNT (t); ++i) | |
115 | { | |
883fd55a | 116 | struct decl_field *tdef = &TYPE_TYPEDEF_FIELD (t, i); |
bd69fc68 TT |
117 | void **slot; |
118 | ||
119 | slot = htab_find_slot (table->table, tdef, INSERT); | |
120 | /* Only add a given typedef name once. Really this shouldn't | |
121 | happen; but it is safe enough to do the updates breadth-first | |
122 | and thus use the most specific typedef. */ | |
123 | if (*slot == NULL) | |
124 | *slot = tdef; | |
125 | } | |
126 | ||
127 | /* Recurse into superclasses. */ | |
128 | for (i = 0; i < TYPE_N_BASECLASSES (t); ++i) | |
129 | recursively_update_typedef_hash (table, TYPE_BASECLASS (t, i)); | |
130 | } | |
131 | ||
132 | /* Add template parameters from T to the typedef hash TABLE. */ | |
133 | ||
134 | void | |
135 | add_template_parameters (struct typedef_hash_table *table, struct type *t) | |
136 | { | |
137 | int i; | |
138 | ||
139 | if (table == NULL) | |
140 | return; | |
141 | ||
142 | for (i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (t); ++i) | |
143 | { | |
883fd55a | 144 | struct decl_field *tf; |
bd69fc68 TT |
145 | void **slot; |
146 | ||
147 | /* We only want type-valued template parameters in the hash. */ | |
148 | if (SYMBOL_CLASS (TYPE_TEMPLATE_ARGUMENT (t, i)) != LOC_TYPEDEF) | |
149 | continue; | |
150 | ||
883fd55a | 151 | tf = XOBNEW (&table->storage, struct decl_field); |
bd69fc68 TT |
152 | tf->name = SYMBOL_LINKAGE_NAME (TYPE_TEMPLATE_ARGUMENT (t, i)); |
153 | tf->type = SYMBOL_TYPE (TYPE_TEMPLATE_ARGUMENT (t, i)); | |
154 | ||
155 | slot = htab_find_slot (table->table, tf, INSERT); | |
156 | if (*slot == NULL) | |
157 | *slot = tf; | |
158 | } | |
159 | } | |
160 | ||
161 | /* Create a new typedef-lookup hash table. */ | |
162 | ||
163 | struct typedef_hash_table * | |
164 | create_typedef_hash (void) | |
165 | { | |
166 | struct typedef_hash_table *result; | |
167 | ||
168 | result = XNEW (struct typedef_hash_table); | |
169 | result->table = htab_create_alloc (10, hash_typedef_field, eq_typedef_field, | |
170 | NULL, xcalloc, xfree); | |
171 | obstack_init (&result->storage); | |
172 | ||
173 | return result; | |
174 | } | |
175 | ||
176 | /* Free a typedef field table. */ | |
177 | ||
178 | void | |
179 | free_typedef_hash (struct typedef_hash_table *table) | |
180 | { | |
181 | if (table != NULL) | |
182 | { | |
183 | htab_delete (table->table); | |
184 | obstack_free (&table->storage, NULL); | |
185 | xfree (table); | |
186 | } | |
187 | } | |
188 | ||
189 | /* A cleanup for freeing a typedef_hash_table. */ | |
190 | ||
191 | static void | |
192 | do_free_typedef_hash (void *arg) | |
193 | { | |
19ba03f4 | 194 | free_typedef_hash ((struct typedef_hash_table *) arg); |
bd69fc68 TT |
195 | } |
196 | ||
197 | /* Return a new cleanup that frees TABLE. */ | |
198 | ||
199 | struct cleanup * | |
200 | make_cleanup_free_typedef_hash (struct typedef_hash_table *table) | |
201 | { | |
202 | return make_cleanup (do_free_typedef_hash, table); | |
203 | } | |
204 | ||
205 | /* Helper function for copy_typedef_hash. */ | |
206 | ||
207 | static int | |
208 | copy_typedef_hash_element (void **slot, void *nt) | |
209 | { | |
19ba03f4 | 210 | htab_t new_table = (htab_t) nt; |
bd69fc68 TT |
211 | void **new_slot; |
212 | ||
213 | new_slot = htab_find_slot (new_table, *slot, INSERT); | |
214 | if (*new_slot == NULL) | |
215 | *new_slot = *slot; | |
216 | ||
217 | return 1; | |
218 | } | |
219 | ||
220 | /* Copy a typedef hash. */ | |
221 | ||
222 | struct typedef_hash_table * | |
223 | copy_typedef_hash (struct typedef_hash_table *table) | |
224 | { | |
225 | struct typedef_hash_table *result; | |
226 | ||
227 | if (table == NULL) | |
228 | return NULL; | |
229 | ||
230 | result = create_typedef_hash (); | |
231 | htab_traverse_noresize (table->table, copy_typedef_hash_element, | |
232 | result->table); | |
233 | return result; | |
234 | } | |
235 | ||
18a9fc12 TT |
236 | /* A cleanup to free the global typedef hash. */ |
237 | ||
238 | static void | |
239 | do_free_global_table (void *arg) | |
240 | { | |
19ba03f4 | 241 | struct type_print_options *flags = (struct type_print_options *) arg; |
18a9fc12 TT |
242 | |
243 | free_typedef_hash (flags->global_typedefs); | |
6dddc817 | 244 | free_ext_lang_type_printers (flags->global_printers); |
18a9fc12 TT |
245 | } |
246 | ||
247 | /* Create the global typedef hash. */ | |
248 | ||
249 | static struct cleanup * | |
250 | create_global_typedef_table (struct type_print_options *flags) | |
251 | { | |
252 | gdb_assert (flags->global_typedefs == NULL && flags->global_printers == NULL); | |
253 | flags->global_typedefs = create_typedef_hash (); | |
6dddc817 | 254 | flags->global_printers = start_ext_lang_type_printers (); |
18a9fc12 TT |
255 | return make_cleanup (do_free_global_table, flags); |
256 | } | |
257 | ||
258 | /* Look up the type T in the global typedef hash. If it is found, | |
259 | return the typedef name. If it is not found, apply the | |
6dddc817 | 260 | type-printers, if any, given by start_script_type_printers and return the |
18a9fc12 TT |
261 | result. A NULL return means that the name was not found. */ |
262 | ||
263 | static const char * | |
264 | find_global_typedef (const struct type_print_options *flags, | |
265 | struct type *t) | |
266 | { | |
267 | char *applied; | |
268 | void **slot; | |
883fd55a | 269 | struct decl_field tf, *new_tf; |
18a9fc12 TT |
270 | |
271 | if (flags->global_typedefs == NULL) | |
272 | return NULL; | |
273 | ||
274 | tf.name = NULL; | |
275 | tf.type = t; | |
276 | ||
277 | slot = htab_find_slot (flags->global_typedefs->table, &tf, INSERT); | |
278 | if (*slot != NULL) | |
279 | { | |
883fd55a | 280 | new_tf = (struct decl_field *) *slot; |
18a9fc12 TT |
281 | return new_tf->name; |
282 | } | |
283 | ||
9b94fcf1 DE |
284 | /* Put an entry into the hash table now, in case |
285 | apply_ext_lang_type_printers recurses. */ | |
883fd55a | 286 | new_tf = XOBNEW (&flags->global_typedefs->storage, struct decl_field); |
18a9fc12 TT |
287 | new_tf->name = NULL; |
288 | new_tf->type = t; | |
289 | ||
290 | *slot = new_tf; | |
291 | ||
6dddc817 | 292 | applied = apply_ext_lang_type_printers (flags->global_printers, t); |
18a9fc12 TT |
293 | |
294 | if (applied != NULL) | |
295 | { | |
224c3ddb SM |
296 | new_tf->name |
297 | = (const char *) obstack_copy0 (&flags->global_typedefs->storage, | |
298 | applied, strlen (applied)); | |
18a9fc12 TT |
299 | xfree (applied); |
300 | } | |
301 | ||
302 | return new_tf->name; | |
303 | } | |
304 | ||
bd69fc68 TT |
305 | /* Look up the type T in the typedef hash table in with FLAGS. If T |
306 | is in the table, return its short (class-relative) typedef name. | |
307 | Otherwise return NULL. If the table is NULL, this always returns | |
308 | NULL. */ | |
309 | ||
310 | const char * | |
311 | find_typedef_in_hash (const struct type_print_options *flags, struct type *t) | |
312 | { | |
18a9fc12 TT |
313 | if (flags->local_typedefs != NULL) |
314 | { | |
883fd55a | 315 | struct decl_field tf, *found; |
bd69fc68 | 316 | |
18a9fc12 TT |
317 | tf.name = NULL; |
318 | tf.type = t; | |
883fd55a KS |
319 | found = (struct decl_field *) htab_find (flags->local_typedefs->table, |
320 | &tf); | |
bd69fc68 | 321 | |
18a9fc12 TT |
322 | if (found != NULL) |
323 | return found->name; | |
324 | } | |
bd69fc68 | 325 | |
18a9fc12 | 326 | return find_global_typedef (flags, t); |
bd69fc68 TT |
327 | } |
328 | ||
329 | \f | |
330 | ||
a5238fbc PM |
331 | /* Print a description of a type in the format of a |
332 | typedef for the current language. | |
c378eb4e | 333 | NEW is the new name for a type TYPE. */ |
a5238fbc PM |
334 | |
335 | void | |
fe978cb0 | 336 | typedef_print (struct type *type, struct symbol *newobj, struct ui_file *stream) |
a5238fbc | 337 | { |
fe978cb0 | 338 | LA_PRINT_TYPEDEF (type, newobj, stream); |
5c6ce71d TT |
339 | } |
340 | ||
341 | /* The default way to print a typedef. */ | |
342 | ||
343 | void | |
344 | default_print_typedef (struct type *type, struct symbol *new_symbol, | |
345 | struct ui_file *stream) | |
346 | { | |
347 | error (_("Language not supported.")); | |
a5238fbc PM |
348 | } |
349 | ||
c906108c SS |
350 | /* Print a description of a type TYPE in the form of a declaration of a |
351 | variable named VARSTRING. (VARSTRING is demangled if necessary.) | |
352 | Output goes to STREAM (via stdio). | |
353 | If SHOW is positive, we show the contents of the outermost level | |
354 | of structure even if there is a type name that could be used instead. | |
355 | If SHOW is negative, we never show the details of elements' types. */ | |
356 | ||
357 | void | |
0d5cff50 | 358 | type_print (struct type *type, const char *varstring, struct ui_file *stream, |
fba45db2 | 359 | int show) |
c906108c | 360 | { |
79d43c61 | 361 | LA_PRINT_TYPE (type, varstring, stream, show, 0, &default_ptype_flags); |
c906108c SS |
362 | } |
363 | ||
ae6a3a4c TJB |
364 | /* Print TYPE to a string, returning it. The caller is responsible for |
365 | freeing the string. */ | |
366 | ||
2f408ecb | 367 | std::string |
ae6a3a4c TJB |
368 | type_to_string (struct type *type) |
369 | { | |
492d29ea | 370 | TRY |
ae6a3a4c | 371 | { |
d7e74731 PA |
372 | string_file stb; |
373 | ||
374 | type_print (type, "", &stb, -1); | |
375 | return std::move (stb.string ()); | |
ae6a3a4c | 376 | } |
492d29ea PA |
377 | CATCH (except, RETURN_MASK_ALL) |
378 | { | |
492d29ea PA |
379 | } |
380 | END_CATCH | |
ae6a3a4c | 381 | |
d7e74731 | 382 | return {}; |
ae6a3a4c TJB |
383 | } |
384 | ||
7022349d PA |
385 | /* See typeprint.h. */ |
386 | ||
387 | void | |
388 | type_print_unknown_return_type (struct ui_file *stream) | |
389 | { | |
390 | fprintf_filtered (stream, _("<unknown return type>")); | |
391 | } | |
392 | ||
46a4882b PA |
393 | /* See typeprint.h. */ |
394 | ||
395 | void | |
396 | error_unknown_type (const char *sym_print_name) | |
397 | { | |
398 | error (_("'%s' has unknown type; cast it to its declared type"), | |
399 | sym_print_name); | |
400 | } | |
401 | ||
c906108c SS |
402 | /* Print type of EXP, or last thing in value history if EXP == NULL. |
403 | show is passed to type_print. */ | |
404 | ||
405 | static void | |
0b39b52e | 406 | whatis_exp (const char *exp, int show) |
c906108c | 407 | { |
3d6d86c6 | 408 | struct value *val; |
18a9fc12 | 409 | struct cleanup *old_chain; |
c5aa993b | 410 | struct type *real_type = NULL; |
070ad9f0 | 411 | struct type *type; |
c906108c | 412 | int full = 0; |
6b850546 | 413 | LONGEST top = -1; |
c906108c | 414 | int using_enc = 0; |
79a45b7d | 415 | struct value_print_options opts; |
53342f27 | 416 | struct type_print_options flags = default_ptype_flags; |
c906108c | 417 | |
18a9fc12 TT |
418 | old_chain = make_cleanup (null_cleanup, NULL); |
419 | ||
c906108c SS |
420 | if (exp) |
421 | { | |
53342f27 TT |
422 | if (*exp == '/') |
423 | { | |
424 | int seen_one = 0; | |
425 | ||
426 | for (++exp; *exp && !isspace (*exp); ++exp) | |
427 | { | |
428 | switch (*exp) | |
429 | { | |
430 | case 'r': | |
431 | flags.raw = 1; | |
432 | break; | |
433 | case 'm': | |
434 | flags.print_methods = 0; | |
435 | break; | |
436 | case 'M': | |
437 | flags.print_methods = 1; | |
438 | break; | |
439 | case 't': | |
440 | flags.print_typedefs = 0; | |
441 | break; | |
442 | case 'T': | |
443 | flags.print_typedefs = 1; | |
444 | break; | |
7c161838 SDJ |
445 | case 'o': |
446 | { | |
447 | /* Filter out languages which don't implement the | |
448 | feature. */ | |
46afe196 SDJ |
449 | if (show > 0 |
450 | && (current_language->la_language == language_c | |
451 | || current_language->la_language == language_cplus)) | |
7c161838 SDJ |
452 | { |
453 | flags.print_offsets = 1; | |
454 | flags.print_typedefs = 0; | |
455 | flags.print_methods = 0; | |
456 | } | |
457 | break; | |
458 | } | |
53342f27 TT |
459 | default: |
460 | error (_("unrecognized flag '%c'"), *exp); | |
461 | } | |
462 | seen_one = 1; | |
463 | } | |
464 | ||
465 | if (!*exp && !seen_one) | |
466 | error (_("flag expected")); | |
467 | if (!isspace (*exp)) | |
468 | error (_("expected space after format")); | |
469 | exp = skip_spaces (exp); | |
470 | } | |
471 | ||
4d01a485 | 472 | expression_up expr = parse_expression (exp); |
c973d0aa PA |
473 | |
474 | /* The behavior of "whatis" depends on whether the user | |
475 | expression names a type directly, or a language expression | |
476 | (including variable names). If the former, then "whatis" | |
477 | strips one level of typedefs, only. If an expression, | |
478 | "whatis" prints the type of the expression without stripping | |
479 | any typedef level. "ptype" always strips all levels of | |
480 | typedefs. */ | |
481 | if (show == -1 && expr->elts[0].opcode == OP_TYPE) | |
482 | { | |
483 | /* The user expression names a type directly. */ | |
484 | type = expr->elts[1].type; | |
485 | ||
486 | /* If this is a typedef, then find its immediate target. | |
487 | Use check_typedef to resolve stubs, but ignore its result | |
488 | because we do not want to dig past all typedefs. */ | |
489 | check_typedef (type); | |
490 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) | |
491 | type = TYPE_TARGET_TYPE (type); | |
5c319bb2 PA |
492 | |
493 | /* If the expression is actually a type, then there's no | |
494 | value to fetch the dynamic type from. */ | |
495 | val = NULL; | |
c973d0aa PA |
496 | } |
497 | else | |
498 | { | |
499 | /* The user expression names a type indirectly by naming an | |
500 | object or expression of that type. Find that | |
501 | indirectly-named type. */ | |
502 | val = evaluate_type (expr.get ()); | |
503 | type = value_type (val); | |
504 | } | |
c906108c SS |
505 | } |
506 | else | |
c973d0aa PA |
507 | { |
508 | val = access_value_history (0); | |
509 | type = value_type (val); | |
510 | } | |
070ad9f0 | 511 | |
79a45b7d | 512 | get_user_print_options (&opts); |
5c319bb2 | 513 | if (val != NULL && opts.objectprint) |
070ad9f0 | 514 | { |
aa006118 | 515 | if (((TYPE_CODE (type) == TYPE_CODE_PTR) || TYPE_IS_REFERENCE (type)) |
4753d33b | 516 | && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRUCT)) |
dfcee124 | 517 | real_type = value_rtti_indirect_type (val, &full, &top, &using_enc); |
4753d33b | 518 | else if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
41808ebe | 519 | real_type = value_rtti_type (val, &full, &top, &using_enc); |
070ad9f0 | 520 | } |
c906108c | 521 | |
7c161838 SDJ |
522 | if (flags.print_offsets |
523 | && (TYPE_CODE (type) == TYPE_CODE_STRUCT | |
524 | || TYPE_CODE (type) == TYPE_CODE_UNION)) | |
525 | fprintf_filtered (gdb_stdout, "/* offset | size */ "); | |
526 | ||
c906108c SS |
527 | printf_filtered ("type = "); |
528 | ||
18a9fc12 TT |
529 | if (!flags.raw) |
530 | create_global_typedef_table (&flags); | |
531 | ||
070ad9f0 DB |
532 | if (real_type) |
533 | { | |
534 | printf_filtered ("/* real type = "); | |
535 | type_print (real_type, "", gdb_stdout, -1); | |
536 | if (! full) | |
537 | printf_filtered (" (incomplete object)"); | |
538 | printf_filtered (" */\n"); | |
539 | } | |
c906108c | 540 | |
53342f27 | 541 | LA_PRINT_TYPE (type, "", gdb_stdout, show, 0, &flags); |
c906108c SS |
542 | printf_filtered ("\n"); |
543 | ||
18a9fc12 | 544 | do_cleanups (old_chain); |
c906108c SS |
545 | } |
546 | ||
c906108c | 547 | static void |
0b39b52e | 548 | whatis_command (const char *exp, int from_tty) |
c906108c SS |
549 | { |
550 | /* Most of the time users do not want to see all the fields | |
551 | in a structure. If they do they can use the "ptype" command. | |
552 | Hence the "-1" below. */ | |
553 | whatis_exp (exp, -1); | |
554 | } | |
555 | ||
c906108c SS |
556 | /* TYPENAME is either the name of a type, or an expression. */ |
557 | ||
c906108c | 558 | static void |
0b39b52e | 559 | ptype_command (const char *type_name, int from_tty) |
c906108c | 560 | { |
fe978cb0 | 561 | whatis_exp (type_name, 1); |
c906108c SS |
562 | } |
563 | ||
564 | /* Print integral scalar data VAL, of type TYPE, onto stdio stream STREAM. | |
565 | Used to print data from type structures in a specified type. For example, | |
566 | array bounds may be characters or booleans in some languages, and this | |
567 | allows the ranges to be printed in their "natural" form rather than as | |
568 | decimal integer values. | |
569 | ||
570 | FIXME: This is here simply because only the type printing routines | |
571 | currently use it, and it wasn't clear if it really belonged somewhere | |
572 | else (like printcmd.c). There are a lot of other gdb routines that do | |
573 | something similar, but they are generally concerned with printing values | |
41808ebe | 574 | that come from the inferior in target byte order and target size. */ |
c906108c SS |
575 | |
576 | void | |
fba45db2 | 577 | print_type_scalar (struct type *type, LONGEST val, struct ui_file *stream) |
c906108c SS |
578 | { |
579 | unsigned int i; | |
580 | unsigned len; | |
581 | ||
f168693b | 582 | type = check_typedef (type); |
c906108c SS |
583 | |
584 | switch (TYPE_CODE (type)) | |
585 | { | |
586 | ||
587 | case TYPE_CODE_ENUM: | |
588 | len = TYPE_NFIELDS (type); | |
589 | for (i = 0; i < len; i++) | |
590 | { | |
14e75d8e | 591 | if (TYPE_FIELD_ENUMVAL (type, i) == val) |
c906108c SS |
592 | { |
593 | break; | |
594 | } | |
595 | } | |
596 | if (i < len) | |
597 | { | |
598 | fputs_filtered (TYPE_FIELD_NAME (type, i), stream); | |
599 | } | |
600 | else | |
601 | { | |
602 | print_longest (stream, 'd', 0, val); | |
603 | } | |
604 | break; | |
605 | ||
606 | case TYPE_CODE_INT: | |
607 | print_longest (stream, TYPE_UNSIGNED (type) ? 'u' : 'd', 0, val); | |
608 | break; | |
609 | ||
610 | case TYPE_CODE_CHAR: | |
6c7a06a3 | 611 | LA_PRINT_CHAR ((unsigned char) val, type, stream); |
c906108c SS |
612 | break; |
613 | ||
614 | case TYPE_CODE_BOOL: | |
615 | fprintf_filtered (stream, val ? "TRUE" : "FALSE"); | |
616 | break; | |
617 | ||
618 | case TYPE_CODE_RANGE: | |
619 | print_type_scalar (TYPE_TARGET_TYPE (type), val, stream); | |
620 | return; | |
621 | ||
622 | case TYPE_CODE_UNDEF: | |
623 | case TYPE_CODE_PTR: | |
624 | case TYPE_CODE_ARRAY: | |
625 | case TYPE_CODE_STRUCT: | |
626 | case TYPE_CODE_UNION: | |
627 | case TYPE_CODE_FUNC: | |
628 | case TYPE_CODE_FLT: | |
629 | case TYPE_CODE_VOID: | |
630 | case TYPE_CODE_SET: | |
631 | case TYPE_CODE_STRING: | |
632 | case TYPE_CODE_ERROR: | |
0d5de010 DJ |
633 | case TYPE_CODE_MEMBERPTR: |
634 | case TYPE_CODE_METHODPTR: | |
c906108c SS |
635 | case TYPE_CODE_METHOD: |
636 | case TYPE_CODE_REF: | |
aa006118 | 637 | case TYPE_CODE_RVALUE_REF: |
5c4e30ca | 638 | case TYPE_CODE_NAMESPACE: |
8a3fe4f8 | 639 | error (_("internal error: unhandled type in print_type_scalar")); |
c906108c SS |
640 | break; |
641 | ||
642 | default: | |
8a3fe4f8 | 643 | error (_("Invalid type code in symbol table.")); |
c906108c SS |
644 | } |
645 | gdb_flush (stream); | |
646 | } | |
647 | ||
c906108c SS |
648 | /* Dump details of a type specified either directly or indirectly. |
649 | Uses the same sort of type lookup mechanism as ptype_command() | |
41808ebe | 650 | and whatis_command(). */ |
c906108c SS |
651 | |
652 | void | |
58971144 | 653 | maintenance_print_type (const char *type_name, int from_tty) |
c906108c | 654 | { |
3d6d86c6 | 655 | struct value *val; |
52f0bd74 | 656 | struct type *type; |
c906108c | 657 | |
fe978cb0 | 658 | if (type_name != NULL) |
c5aa993b | 659 | { |
4d01a485 | 660 | expression_up expr = parse_expression (type_name); |
c5aa993b JM |
661 | if (expr->elts[0].opcode == OP_TYPE) |
662 | { | |
c378eb4e | 663 | /* The user expression names a type directly, just use that type. */ |
c5aa993b JM |
664 | type = expr->elts[1].type; |
665 | } | |
666 | else | |
667 | { | |
668 | /* The user expression may name a type indirectly by naming an | |
c378eb4e | 669 | object of that type. Find that indirectly named type. */ |
4d01a485 | 670 | val = evaluate_type (expr.get ()); |
df407dfe | 671 | type = value_type (val); |
c5aa993b JM |
672 | } |
673 | if (type != NULL) | |
674 | { | |
675 | recursive_dump_type (type, 0); | |
676 | } | |
c5aa993b | 677 | } |
c906108c | 678 | } |
c906108c | 679 | \f |
c5aa993b | 680 | |
53342f27 TT |
681 | struct cmd_list_element *setprinttypelist; |
682 | ||
683 | struct cmd_list_element *showprinttypelist; | |
684 | ||
685 | static void | |
981a3fb3 | 686 | set_print_type (const char *arg, int from_tty) |
53342f27 TT |
687 | { |
688 | printf_unfiltered ( | |
689 | "\"set print type\" must be followed by the name of a subcommand.\n"); | |
635c7e8a | 690 | help_list (setprintlist, "set print type ", all_commands, gdb_stdout); |
53342f27 TT |
691 | } |
692 | ||
693 | static void | |
981a3fb3 | 694 | show_print_type (const char *args, int from_tty) |
53342f27 TT |
695 | { |
696 | cmd_show_list (showprinttypelist, from_tty, ""); | |
697 | } | |
698 | ||
699 | static int print_methods = 1; | |
700 | ||
701 | static void | |
eb4c3f4a TT |
702 | set_print_type_methods (const char *args, |
703 | int from_tty, struct cmd_list_element *c) | |
53342f27 TT |
704 | { |
705 | default_ptype_flags.print_methods = print_methods; | |
706 | } | |
707 | ||
708 | static void | |
709 | show_print_type_methods (struct ui_file *file, int from_tty, | |
710 | struct cmd_list_element *c, const char *value) | |
711 | { | |
712 | fprintf_filtered (file, _("Printing of methods defined in a class in %s\n"), | |
713 | value); | |
714 | } | |
715 | ||
716 | static int print_typedefs = 1; | |
717 | ||
718 | static void | |
eb4c3f4a TT |
719 | set_print_type_typedefs (const char *args, |
720 | int from_tty, struct cmd_list_element *c) | |
53342f27 TT |
721 | { |
722 | default_ptype_flags.print_typedefs = print_typedefs; | |
723 | } | |
724 | ||
725 | static void | |
726 | show_print_type_typedefs (struct ui_file *file, int from_tty, | |
727 | struct cmd_list_element *c, const char *value) | |
728 | { | |
729 | fprintf_filtered (file, _("Printing of typedefs defined in a class in %s\n"), | |
730 | value); | |
731 | } | |
732 | ||
883fd55a KS |
733 | /* Limit on the number of nested type definitions to print or -1 to print |
734 | all nested type definitions in a class. By default, we do not print | |
735 | nested definitions. */ | |
736 | ||
737 | static int print_nested_type_limit = 0; | |
738 | ||
739 | /* Set how many nested type definitions should be printed by the type | |
740 | printer. */ | |
741 | ||
742 | static void | |
743 | set_print_type_nested_types (const char *args, int from_tty, | |
744 | struct cmd_list_element *c) | |
745 | { | |
746 | default_ptype_flags.print_nested_type_limit = print_nested_type_limit; | |
747 | } | |
748 | ||
749 | /* Show how many nested type definitions the type printer will print. */ | |
750 | ||
751 | static void | |
752 | show_print_type_nested_types (struct ui_file *file, int from_tty, | |
753 | struct cmd_list_element *c, const char *value) | |
754 | { | |
755 | if (*value == '0') | |
756 | { | |
757 | fprintf_filtered (file, | |
758 | _("Will not print nested types defined in a class\n")); | |
759 | } | |
760 | else | |
761 | { | |
762 | fprintf_filtered (file, | |
763 | _("Will print %s nested types defined in a class\n"), | |
764 | value); | |
765 | } | |
766 | } | |
767 | ||
c906108c | 768 | void |
fba45db2 | 769 | _initialize_typeprint (void) |
c906108c | 770 | { |
4fc5d43e TT |
771 | struct cmd_list_element *c; |
772 | ||
773 | c = add_com ("ptype", class_vars, ptype_command, _("\ | |
1bedd215 | 774 | Print definition of type TYPE.\n\ |
a9375afe DE |
775 | Usage: ptype[/FLAGS] TYPE | EXPRESSION\n\ |
776 | Argument may be any type (for example a type name defined by typedef,\n\ | |
777 | or \"struct STRUCT-TAG\" or \"class CLASS-NAME\" or \"union UNION-TAG\"\n\ | |
778 | or \"enum ENUM-TAG\") or an expression.\n\ | |
11081198 | 779 | The selected stack frame's lexical context is used to look up the name.\n\ |
53342f27 TT |
780 | Contrary to \"whatis\", \"ptype\" always unrolls any typedefs.\n\ |
781 | \n\ | |
782 | Available FLAGS are:\n\ | |
783 | /r print in \"raw\" form; do not substitute typedefs\n\ | |
784 | /m do not print methods defined in a class\n\ | |
785 | /M print methods defined in a class\n\ | |
786 | /t do not print typedefs defined in a class\n\ | |
7c161838 SDJ |
787 | /T print typedefs defined in a class\n\ |
788 | /o print offsets and sizes of fields in a struct (like pahole)\n")); | |
4fc5d43e | 789 | set_cmd_completer (c, expression_completer); |
c906108c | 790 | |
4fc5d43e TT |
791 | c = add_com ("whatis", class_vars, whatis_command, |
792 | _("Print data type of expression EXP.\n\ | |
11081198 | 793 | Only one level of typedefs is unrolled. See also \"ptype\".")); |
4fc5d43e | 794 | set_cmd_completer (c, expression_completer); |
53342f27 TT |
795 | |
796 | add_prefix_cmd ("type", no_class, show_print_type, | |
797 | _("Generic command for showing type-printing settings."), | |
798 | &showprinttypelist, "show print type ", 0, &showprintlist); | |
799 | add_prefix_cmd ("type", no_class, set_print_type, | |
800 | _("Generic command for setting how types print."), | |
801 | &setprinttypelist, "show print type ", 0, &setprintlist); | |
802 | ||
803 | add_setshow_boolean_cmd ("methods", no_class, &print_methods, | |
804 | _("\ | |
805 | Set printing of methods defined in classes."), _("\ | |
806 | Show printing of methods defined in classes."), NULL, | |
807 | set_print_type_methods, | |
808 | show_print_type_methods, | |
809 | &setprinttypelist, &showprinttypelist); | |
810 | add_setshow_boolean_cmd ("typedefs", no_class, &print_typedefs, | |
811 | _("\ | |
812 | Set printing of typedefs defined in classes."), _("\ | |
813 | Show printing of typedefs defined in classes."), NULL, | |
814 | set_print_type_typedefs, | |
815 | show_print_type_typedefs, | |
816 | &setprinttypelist, &showprinttypelist); | |
883fd55a KS |
817 | |
818 | add_setshow_zuinteger_unlimited_cmd ("nested-type-limit", no_class, | |
819 | &print_nested_type_limit, | |
820 | _("\ | |
821 | Set the number of recursive nested type definitions to print \ | |
822 | (\"unlimited\" or -1 to show all)."), _("\ | |
823 | Show the number of recursive nested type definitions to print."), NULL, | |
824 | set_print_type_nested_types, | |
825 | show_print_type_nested_types, | |
826 | &setprinttypelist, &showprinttypelist); | |
c906108c | 827 | } |
3f2f83dd KB |
828 | |
829 | /* Print <not allocated> status to stream STREAM. */ | |
830 | ||
831 | void | |
832 | val_print_not_allocated (struct ui_file *stream) | |
833 | { | |
834 | fprintf_filtered (stream, _("<not allocated>")); | |
835 | } | |
836 | ||
837 | /* Print <not associated> status to stream STREAM. */ | |
838 | ||
839 | void | |
840 | val_print_not_associated (struct ui_file *stream) | |
841 | { | |
842 | fprintf_filtered (stream, _("<not associated>")); | |
843 | } |