Commit | Line | Data |
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c8023e66 | 1 | /* Multiple source language support for GDB. |
7ed0f002 | 2 | Copyright 1991, 1992 Free Software Foundation, Inc. |
c8023e66 JG |
3 | Contributed by the Department of Computer Science at the State University |
4 | of New York at Buffalo. | |
5 | ||
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
6c9638b4 | 20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
c8023e66 JG |
21 | |
22 | /* This file contains functions that return things that are specific | |
23 | to languages. Each function should examine current_language if necessary, | |
24 | and return the appropriate result. */ | |
25 | ||
26 | /* FIXME: Most of these would be better organized as macros which | |
27 | return data out of a "language-specific" struct pointer that is set | |
28 | whenever the working language changes. That would be a lot faster. */ | |
29 | ||
d747e0af | 30 | #include "defs.h" |
fc71ad23 | 31 | #include <ctype.h> |
2b576293 | 32 | #include "gdb_string.h" |
c8023e66 | 33 | |
c8023e66 | 34 | #include "symtab.h" |
1ab3bf1b | 35 | #include "gdbtypes.h" |
c8023e66 JG |
36 | #include "value.h" |
37 | #include "gdbcmd.h" | |
38 | #include "frame.h" | |
c8023e66 | 39 | #include "expression.h" |
7ed0f002 | 40 | #include "language.h" |
c8023e66 JG |
41 | #include "target.h" |
42 | #include "parser-defs.h" | |
43 | ||
7ed0f002 JG |
44 | static void |
45 | show_language_command PARAMS ((char *, int)); | |
46 | ||
47 | static void | |
48 | set_language_command PARAMS ((char *, int)); | |
49 | ||
50 | static void | |
51 | show_type_command PARAMS ((char *, int)); | |
c4668207 | 52 | |
7ed0f002 JG |
53 | static void |
54 | set_type_command PARAMS ((char *, int)); | |
55 | ||
56 | static void | |
57 | show_range_command PARAMS ((char *, int)); | |
58 | ||
59 | static void | |
60 | set_range_command PARAMS ((char *, int)); | |
61 | ||
62 | static void | |
63 | set_range_str PARAMS ((void)); | |
64 | ||
65 | static void | |
66 | set_type_str PARAMS ((void)); | |
67 | ||
68 | static void | |
69 | set_lang_str PARAMS ((void)); | |
70 | ||
71 | static void | |
72 | unk_lang_error PARAMS ((char *)); | |
73 | ||
74 | static int | |
75 | unk_lang_parser PARAMS ((void)); | |
76 | ||
77 | static void | |
78 | show_check PARAMS ((char *, int)); | |
79 | ||
80 | static void | |
81 | set_check PARAMS ((char *, int)); | |
82 | ||
83 | static void | |
84 | set_type_range PARAMS ((void)); | |
c8023e66 | 85 | |
b607efe7 | 86 | static void |
242c0d81 | 87 | unk_lang_emit_char PARAMS ((int c, GDB_FILE *stream, int quoter)); |
b607efe7 FF |
88 | |
89 | static void | |
242c0d81 SG |
90 | unk_lang_printchar PARAMS ((int c, GDB_FILE *stream)); |
91 | ||
92 | static void | |
93 | unk_lang_printstr PARAMS ((GDB_FILE *stream, char *string, unsigned int length, int width, int force_ellipses)); | |
b607efe7 FF |
94 | |
95 | static struct type * | |
96 | unk_lang_create_fundamental_type PARAMS ((struct objfile *, int)); | |
97 | ||
98 | static void | |
99 | unk_lang_print_type PARAMS ((struct type *, char *, GDB_FILE *, int, int)); | |
100 | ||
101 | static int | |
102 | unk_lang_val_print PARAMS ((struct type *, char *, CORE_ADDR, GDB_FILE *, | |
103 | int, int, int, enum val_prettyprint)); | |
104 | ||
105 | static int | |
106 | unk_lang_value_print PARAMS ((value_ptr, GDB_FILE *, int, enum val_prettyprint)); | |
107 | ||
c8023e66 | 108 | /* Forward declaration */ |
0c6efbcc | 109 | extern const struct language_defn unknown_language_defn; |
318bf84f | 110 | extern char *warning_pre_print; |
7ed0f002 | 111 | |
c8023e66 JG |
112 | /* The current (default at startup) state of type and range checking. |
113 | (If the modes are set to "auto", though, these are changed based | |
114 | on the default language at startup, and then again based on the | |
115 | language of the first source file. */ | |
116 | ||
117 | enum range_mode range_mode = range_mode_auto; | |
118 | enum range_check range_check = range_check_off; | |
119 | enum type_mode type_mode = type_mode_auto; | |
120 | enum type_check type_check = type_check_off; | |
121 | ||
122 | /* The current language and language_mode (see language.h) */ | |
123 | ||
0c6efbcc | 124 | const struct language_defn *current_language = &unknown_language_defn; |
c8023e66 JG |
125 | enum language_mode language_mode = language_mode_auto; |
126 | ||
b5af69c3 JG |
127 | /* The language that the user expects to be typing in (the language |
128 | of main(), or the last language we notified them about, or C). */ | |
129 | ||
130 | const struct language_defn *expected_language; | |
131 | ||
c8023e66 JG |
132 | /* The list of supported languages. The list itself is malloc'd. */ |
133 | ||
7ed0f002 | 134 | static const struct language_defn **languages; |
c8023e66 JG |
135 | static unsigned languages_size; |
136 | static unsigned languages_allocsize; | |
e58de8a2 | 137 | #define DEFAULT_ALLOCSIZE 4 |
c8023e66 JG |
138 | |
139 | /* The "set language/type/range" commands all put stuff in these | |
140 | buffers. This is to make them work as set/show commands. The | |
141 | user's string is copied here, then the set_* commands look at | |
142 | them and update them to something that looks nice when it is | |
143 | printed out. */ | |
144 | ||
145 | static char *language; | |
146 | static char *type; | |
147 | static char *range; | |
148 | ||
149 | /* Warning issued when current_language and the language of the current | |
150 | frame do not match. */ | |
151 | char lang_frame_mismatch_warn[] = | |
152 | "Warning: the current language does not match this frame."; | |
153 | ||
c8023e66 JG |
154 | \f |
155 | /* This page contains the functions corresponding to GDB commands | |
156 | and their helpers. */ | |
157 | ||
158 | /* Show command. Display a warning if the language set | |
159 | does not match the frame. */ | |
7ed0f002 | 160 | static void |
d8ce1326 JG |
161 | show_language_command (ignore, from_tty) |
162 | char *ignore; | |
c8023e66 JG |
163 | int from_tty; |
164 | { | |
165 | enum language flang; /* The language of the current frame */ | |
166 | ||
167 | flang = get_frame_language(); | |
168 | if (flang != language_unknown && | |
e1dba9c4 MS |
169 | language_mode == language_mode_manual && |
170 | current_language->la_language != flang) | |
171 | printf_filtered("%s\n",lang_frame_mismatch_warn); | |
c8023e66 JG |
172 | } |
173 | ||
174 | /* Set command. Change the current working language. */ | |
7ed0f002 | 175 | static void |
d8ce1326 JG |
176 | set_language_command (ignore, from_tty) |
177 | char *ignore; | |
c8023e66 JG |
178 | int from_tty; |
179 | { | |
180 | int i; | |
181 | enum language flang; | |
5f3d478e | 182 | char *err_lang; |
c8023e66 | 183 | |
fc71ad23 TT |
184 | if (!language || !language[0]) |
185 | { | |
186 | printf_unfiltered("The currently understood settings are:\n\n"); | |
187 | printf_unfiltered ("local or auto Automatic setting based on source file\n"); | |
188 | ||
189 | for (i = 0; i < languages_size; ++i) | |
190 | { | |
191 | /* Already dealt with these above. */ | |
192 | if (languages[i]->la_language == language_unknown | |
193 | || languages[i]->la_language == language_auto) | |
194 | continue; | |
195 | ||
196 | /* FIXME for now assume that the human-readable name is just | |
197 | a capitalization of the internal name. */ | |
198 | printf_unfiltered ("%-16s Use the %c%s language\n", | |
199 | languages[i]->la_name, | |
200 | /* Capitalize first letter of language | |
201 | name. */ | |
202 | toupper (languages[i]->la_name[0]), | |
203 | languages[i]->la_name + 1); | |
204 | } | |
205 | /* Restore the silly string. */ | |
206 | set_language(current_language->la_language); | |
207 | return; | |
208 | } | |
c8023e66 JG |
209 | |
210 | /* Search the list of languages for a match. */ | |
211 | for (i = 0; i < languages_size; i++) { | |
2e4964ad | 212 | if (STREQ (languages[i]->la_name, language)) { |
c8023e66 JG |
213 | /* Found it! Go into manual mode, and use this language. */ |
214 | if (languages[i]->la_language == language_auto) { | |
215 | /* Enter auto mode. Set to the current frame's language, if known. */ | |
216 | language_mode = language_mode_auto; | |
217 | flang = get_frame_language(); | |
218 | if (flang!=language_unknown) | |
219 | set_language(flang); | |
b5af69c3 | 220 | expected_language = current_language; |
c8023e66 JG |
221 | return; |
222 | } else { | |
223 | /* Enter manual mode. Set the specified language. */ | |
224 | language_mode = language_mode_manual; | |
225 | current_language = languages[i]; | |
226 | set_type_range (); | |
227 | set_lang_str(); | |
b5af69c3 | 228 | expected_language = current_language; |
c8023e66 JG |
229 | return; |
230 | } | |
231 | } | |
232 | } | |
233 | ||
5f3d478e JG |
234 | /* Reset the language (esp. the global string "language") to the |
235 | correct values. */ | |
236 | err_lang=savestring(language,strlen(language)); | |
237 | make_cleanup (free, err_lang); /* Free it after error */ | |
238 | set_language(current_language->la_language); | |
239 | error ("Unknown language `%s'.",err_lang); | |
c8023e66 JG |
240 | } |
241 | ||
242 | /* Show command. Display a warning if the type setting does | |
243 | not match the current language. */ | |
7ed0f002 | 244 | static void |
d8ce1326 JG |
245 | show_type_command(ignore, from_tty) |
246 | char *ignore; | |
c8023e66 JG |
247 | int from_tty; |
248 | { | |
249 | if (type_check != current_language->la_type_check) | |
199b2450 | 250 | printf_unfiltered( |
c8023e66 JG |
251 | "Warning: the current type check setting does not match the language.\n"); |
252 | } | |
253 | ||
254 | /* Set command. Change the setting for type checking. */ | |
7ed0f002 | 255 | static void |
d8ce1326 JG |
256 | set_type_command(ignore, from_tty) |
257 | char *ignore; | |
c8023e66 JG |
258 | int from_tty; |
259 | { | |
2e4964ad | 260 | if (STREQ(type,"on")) |
c8023e66 JG |
261 | { |
262 | type_check = type_check_on; | |
263 | type_mode = type_mode_manual; | |
264 | } | |
2e4964ad | 265 | else if (STREQ(type,"warn")) |
c8023e66 JG |
266 | { |
267 | type_check = type_check_warn; | |
268 | type_mode = type_mode_manual; | |
269 | } | |
2e4964ad | 270 | else if (STREQ(type,"off")) |
c8023e66 JG |
271 | { |
272 | type_check = type_check_off; | |
273 | type_mode = type_mode_manual; | |
274 | } | |
2e4964ad | 275 | else if (STREQ(type,"auto")) |
c8023e66 JG |
276 | { |
277 | type_mode = type_mode_auto; | |
278 | set_type_range(); | |
279 | /* Avoid hitting the set_type_str call below. We | |
280 | did it in set_type_range. */ | |
281 | return; | |
282 | } | |
283 | set_type_str(); | |
d8ce1326 | 284 | show_type_command((char *)NULL, from_tty); |
c8023e66 JG |
285 | } |
286 | ||
287 | /* Show command. Display a warning if the range setting does | |
288 | not match the current language. */ | |
7ed0f002 | 289 | static void |
d8ce1326 JG |
290 | show_range_command(ignore, from_tty) |
291 | char *ignore; | |
c8023e66 JG |
292 | int from_tty; |
293 | { | |
294 | ||
295 | if (range_check != current_language->la_range_check) | |
199b2450 | 296 | printf_unfiltered( |
c8023e66 JG |
297 | "Warning: the current range check setting does not match the language.\n"); |
298 | } | |
299 | ||
300 | /* Set command. Change the setting for range checking. */ | |
7ed0f002 | 301 | static void |
d8ce1326 JG |
302 | set_range_command(ignore, from_tty) |
303 | char *ignore; | |
c8023e66 JG |
304 | int from_tty; |
305 | { | |
2e4964ad | 306 | if (STREQ(range,"on")) |
c8023e66 JG |
307 | { |
308 | range_check = range_check_on; | |
309 | range_mode = range_mode_manual; | |
310 | } | |
2e4964ad | 311 | else if (STREQ(range,"warn")) |
c8023e66 JG |
312 | { |
313 | range_check = range_check_warn; | |
314 | range_mode = range_mode_manual; | |
315 | } | |
2e4964ad | 316 | else if (STREQ(range,"off")) |
c8023e66 JG |
317 | { |
318 | range_check = range_check_off; | |
319 | range_mode = range_mode_manual; | |
320 | } | |
2e4964ad | 321 | else if (STREQ(range,"auto")) |
c8023e66 JG |
322 | { |
323 | range_mode = range_mode_auto; | |
324 | set_type_range(); | |
325 | /* Avoid hitting the set_range_str call below. We | |
326 | did it in set_type_range. */ | |
327 | return; | |
328 | } | |
329 | set_range_str(); | |
d8ce1326 | 330 | show_range_command((char *)0, from_tty); |
c8023e66 JG |
331 | } |
332 | ||
333 | /* Set the status of range and type checking based on | |
334 | the current modes and the current language. | |
335 | If SHOW is non-zero, then print out the current language, | |
336 | type and range checking status. */ | |
337 | static void | |
338 | set_type_range() | |
339 | { | |
c8023e66 JG |
340 | |
341 | if (range_mode == range_mode_auto) | |
342 | range_check = current_language->la_range_check; | |
343 | ||
344 | if (type_mode == type_mode_auto) | |
345 | type_check = current_language->la_type_check; | |
346 | ||
347 | set_type_str(); | |
348 | set_range_str(); | |
349 | } | |
350 | ||
f6d23b6f | 351 | /* Set current language to (enum language) LANG. Returns previous language. */ |
c8023e66 | 352 | |
f6d23b6f | 353 | enum language |
c8023e66 JG |
354 | set_language(lang) |
355 | enum language lang; | |
356 | { | |
357 | int i; | |
f6d23b6f SG |
358 | enum language prev_language; |
359 | ||
360 | prev_language = current_language->la_language; | |
c8023e66 JG |
361 | |
362 | for (i = 0; i < languages_size; i++) { | |
363 | if (languages[i]->la_language == lang) { | |
364 | current_language = languages[i]; | |
365 | set_type_range (); | |
366 | set_lang_str(); | |
545af6ce | 367 | break; |
c8023e66 JG |
368 | } |
369 | } | |
f6d23b6f SG |
370 | |
371 | return prev_language; | |
c8023e66 JG |
372 | } |
373 | \f | |
374 | /* This page contains functions that update the global vars | |
375 | language, type and range. */ | |
7ed0f002 | 376 | static void |
c8023e66 JG |
377 | set_lang_str() |
378 | { | |
d8ce1326 | 379 | char *prefix = ""; |
c8023e66 JG |
380 | |
381 | free (language); | |
382 | if (language_mode == language_mode_auto) | |
383 | prefix = "auto; currently "; | |
384 | ||
58ae87f6 | 385 | language = concat(prefix, current_language->la_name, NULL); |
c8023e66 JG |
386 | } |
387 | ||
7ed0f002 | 388 | static void |
c8023e66 JG |
389 | set_type_str() |
390 | { | |
391 | char *tmp, *prefix = ""; | |
392 | ||
393 | free (type); | |
394 | if (type_mode==type_mode_auto) | |
395 | prefix = "auto; currently "; | |
396 | ||
397 | switch(type_check) | |
398 | { | |
399 | case type_check_on: | |
400 | tmp = "on"; | |
401 | break; | |
402 | case type_check_off: | |
403 | tmp = "off"; | |
404 | break; | |
405 | case type_check_warn: | |
406 | tmp = "warn"; | |
407 | break; | |
408 | default: | |
409 | error ("Unrecognized type check setting."); | |
410 | } | |
411 | ||
58ae87f6 | 412 | type = concat(prefix,tmp,NULL); |
c8023e66 JG |
413 | } |
414 | ||
7ed0f002 | 415 | static void |
c8023e66 JG |
416 | set_range_str() |
417 | { | |
418 | char *tmp, *pref = ""; | |
419 | ||
420 | free (range); | |
421 | if (range_mode==range_mode_auto) | |
422 | pref = "auto; currently "; | |
423 | ||
424 | switch(range_check) | |
425 | { | |
426 | case range_check_on: | |
427 | tmp = "on"; | |
428 | break; | |
429 | case range_check_off: | |
430 | tmp = "off"; | |
431 | break; | |
432 | case range_check_warn: | |
433 | tmp = "warn"; | |
434 | break; | |
435 | default: | |
436 | error ("Unrecognized range check setting."); | |
437 | } | |
438 | ||
58ae87f6 | 439 | range = concat(pref,tmp,NULL); |
c8023e66 JG |
440 | } |
441 | ||
442 | ||
443 | /* Print out the current language settings: language, range and | |
7ed0f002 | 444 | type checking. If QUIETLY, print only what has changed. */ |
b5af69c3 | 445 | |
c8023e66 | 446 | void |
7ed0f002 JG |
447 | language_info (quietly) |
448 | int quietly; | |
c8023e66 | 449 | { |
b5af69c3 JG |
450 | if (quietly && expected_language == current_language) |
451 | return; | |
452 | ||
453 | expected_language = current_language; | |
199b2450 | 454 | printf_unfiltered("Current language: %s\n",language); |
b5af69c3 JG |
455 | show_language_command((char *)0, 1); |
456 | ||
457 | if (!quietly) | |
458 | { | |
199b2450 | 459 | printf_unfiltered("Type checking: %s\n",type); |
b5af69c3 | 460 | show_type_command((char *)0, 1); |
199b2450 | 461 | printf_unfiltered("Range checking: %s\n",range); |
b5af69c3 JG |
462 | show_range_command((char *)0, 1); |
463 | } | |
c8023e66 JG |
464 | } |
465 | \f | |
466 | /* Return the result of a binary operation. */ | |
7ed0f002 JG |
467 | |
468 | #if 0 /* Currently unused */ | |
469 | ||
c8023e66 | 470 | struct type * |
82a2edfb JK |
471 | binop_result_type (v1, v2) |
472 | value_ptr v1, v2; | |
c8023e66 | 473 | { |
940d5967 PB |
474 | int size,uns; |
475 | struct type *t1 = check_typedef (VALUE_TYPE (v1)); | |
476 | struct type *t2 = check_typedef (VALUE_TYPE (v2)); | |
c8023e66 | 477 | |
940d5967 PB |
478 | int l1 = TYPE_LENGTH (t1); |
479 | int l2 = TYPE_LENGTH (t2); | |
c8023e66 JG |
480 | |
481 | switch(current_language->la_language) | |
482 | { | |
483 | case language_c: | |
545af6ce | 484 | case language_cplus: |
940d5967 PB |
485 | if (TYPE_CODE (t1)==TYPE_CODE_FLT) |
486 | return TYPE_CODE(t2) == TYPE_CODE_FLT && l2 > l1 ? | |
c8023e66 | 487 | VALUE_TYPE(v2) : VALUE_TYPE(v1); |
940d5967 PB |
488 | else if (TYPE_CODE(t2)==TYPE_CODE_FLT) |
489 | return TYPE_CODE(t1)) == TYPE_CODE_FLT && l1 > l2 ? | |
c8023e66 | 490 | VALUE_TYPE(v1) : VALUE_TYPE(v2); |
940d5967 | 491 | else if (TYPE_UNSIGNED(t1) && l1 > l2) |
c8023e66 | 492 | return VALUE_TYPE(v1); |
940d5967 | 493 | else if (TYPE_UNSIGNED(t2) && l2 > l1) |
c8023e66 JG |
494 | return VALUE_TYPE(v2); |
495 | else /* Both are signed. Result is the longer type */ | |
496 | return l1 > l2 ? VALUE_TYPE(v1) : VALUE_TYPE(v2); | |
497 | break; | |
498 | case language_m2: | |
499 | /* If we are doing type-checking, l1 should equal l2, so this is | |
500 | not needed. */ | |
501 | return l1 > l2 ? VALUE_TYPE(v1) : VALUE_TYPE(v2); | |
502 | break; | |
5aefc1ca | 503 | case language_chill: |
e58de8a2 | 504 | error ("Missing Chill support in function binop_result_check.");/*FIXME*/ |
c8023e66 | 505 | } |
d8ce1326 JG |
506 | abort(); |
507 | return (struct type *)0; /* For lint */ | |
c8023e66 | 508 | } |
7ed0f002 JG |
509 | |
510 | #endif /* 0 */ | |
511 | ||
c8023e66 JG |
512 | \f |
513 | /* This page contains functions that return format strings for | |
514 | printf for printing out numbers in different formats */ | |
515 | ||
516 | /* Returns the appropriate printf format for hexadecimal | |
517 | numbers. */ | |
518 | char * | |
519 | local_hex_format_custom(pre) | |
520 | char *pre; | |
521 | { | |
522 | static char form[50]; | |
523 | ||
2e66cf7d FF |
524 | strcpy (form, local_hex_format_prefix ()); |
525 | strcat (form, "%"); | |
c8023e66 | 526 | strcat (form, pre); |
2e66cf7d FF |
527 | strcat (form, local_hex_format_specifier ()); |
528 | strcat (form, local_hex_format_suffix ()); | |
c8023e66 JG |
529 | return form; |
530 | } | |
531 | ||
532 | /* Converts a number to hexadecimal and stores it in a static | |
533 | string. Returns a pointer to this string. */ | |
534 | char * | |
535 | local_hex_string (num) | |
5573d7d4 | 536 | unsigned long num; |
c8023e66 JG |
537 | { |
538 | static char res[50]; | |
539 | ||
2e66cf7d | 540 | sprintf (res, local_hex_format(), num); |
c8023e66 JG |
541 | return res; |
542 | } | |
543 | ||
544 | /* Converts a number to custom hexadecimal and stores it in a static | |
545 | string. Returns a pointer to this string. */ | |
546 | char * | |
547 | local_hex_string_custom(num,pre) | |
5573d7d4 | 548 | unsigned long num; |
c8023e66 JG |
549 | char *pre; |
550 | { | |
551 | static char res[50]; | |
552 | ||
553 | sprintf (res, local_hex_format_custom(pre), num); | |
554 | return res; | |
555 | } | |
556 | ||
557 | /* Returns the appropriate printf format for octal | |
558 | numbers. */ | |
559 | char * | |
560 | local_octal_format_custom(pre) | |
561 | char *pre; | |
562 | { | |
563 | static char form[50]; | |
564 | ||
2e66cf7d FF |
565 | strcpy (form, local_octal_format_prefix ()); |
566 | strcat (form, "%"); | |
c8023e66 | 567 | strcat (form, pre); |
2e66cf7d FF |
568 | strcat (form, local_octal_format_specifier ()); |
569 | strcat (form, local_octal_format_suffix ()); | |
c8023e66 JG |
570 | return form; |
571 | } | |
58a66e24 FF |
572 | |
573 | /* Returns the appropriate printf format for decimal numbers. */ | |
574 | char * | |
575 | local_decimal_format_custom(pre) | |
576 | char *pre; | |
577 | { | |
578 | static char form[50]; | |
579 | ||
580 | strcpy (form, local_decimal_format_prefix ()); | |
581 | strcat (form, "%"); | |
582 | strcat (form, pre); | |
583 | strcat (form, local_decimal_format_specifier ()); | |
584 | strcat (form, local_decimal_format_suffix ()); | |
585 | return form; | |
586 | } | |
c8023e66 | 587 | \f |
940d5967 | 588 | #if 0 |
c8023e66 JG |
589 | /* This page contains functions that are used in type/range checking. |
590 | They all return zero if the type/range check fails. | |
591 | ||
592 | It is hoped that these will make extending GDB to parse different | |
593 | languages a little easier. These are primarily used in eval.c when | |
594 | evaluating expressions and making sure that their types are correct. | |
595 | Instead of having a mess of conjucted/disjuncted expressions in an "if", | |
596 | the ideas of type can be wrapped up in the following functions. | |
597 | ||
598 | Note that some of them are not currently dependent upon which language | |
599 | is currently being parsed. For example, floats are the same in | |
600 | C and Modula-2 (ie. the only floating point type has TYPE_CODE of | |
601 | TYPE_CODE_FLT), while booleans are different. */ | |
602 | ||
603 | /* Returns non-zero if its argument is a simple type. This is the same for | |
604 | both Modula-2 and for C. In the C case, TYPE_CODE_CHAR will never occur, | |
605 | and thus will never cause the failure of the test. */ | |
606 | int | |
607 | simple_type(type) | |
608 | struct type *type; | |
609 | { | |
940d5967 | 610 | CHECK_TYPEDEF (type); |
c8023e66 JG |
611 | switch (TYPE_CODE (type)) { |
612 | case TYPE_CODE_INT: | |
613 | case TYPE_CODE_CHAR: | |
614 | case TYPE_CODE_ENUM: | |
615 | case TYPE_CODE_FLT: | |
616 | case TYPE_CODE_RANGE: | |
617 | case TYPE_CODE_BOOL: | |
618 | return 1; | |
619 | ||
620 | default: | |
621 | return 0; | |
622 | } | |
623 | } | |
624 | ||
2e66cf7d FF |
625 | /* Returns non-zero if its argument is of an ordered type. |
626 | An ordered type is one in which the elements can be tested for the | |
627 | properties of "greater than", "less than", etc, or for which the | |
628 | operations "increment" or "decrement" make sense. */ | |
c8023e66 JG |
629 | int |
630 | ordered_type (type) | |
631 | struct type *type; | |
632 | { | |
940d5967 | 633 | CHECK_TYPEDEF (type); |
c8023e66 JG |
634 | switch (TYPE_CODE (type)) { |
635 | case TYPE_CODE_INT: | |
636 | case TYPE_CODE_CHAR: | |
637 | case TYPE_CODE_ENUM: | |
638 | case TYPE_CODE_FLT: | |
639 | case TYPE_CODE_RANGE: | |
640 | return 1; | |
641 | ||
642 | default: | |
643 | return 0; | |
644 | } | |
645 | } | |
646 | ||
647 | /* Returns non-zero if the two types are the same */ | |
648 | int | |
649 | same_type (arg1, arg2) | |
650 | struct type *arg1, *arg2; | |
651 | { | |
940d5967 | 652 | CHECK_TYPEDEF (type); |
c8023e66 JG |
653 | if (structured_type(arg1) ? !structured_type(arg2) : structured_type(arg2)) |
654 | /* One is structured and one isn't */ | |
655 | return 0; | |
656 | else if (structured_type(arg1) && structured_type(arg2)) | |
657 | return arg1 == arg2; | |
658 | else if (numeric_type(arg1) && numeric_type(arg2)) | |
659 | return (TYPE_CODE(arg2) == TYPE_CODE(arg1)) && | |
660 | (TYPE_UNSIGNED(arg1) == TYPE_UNSIGNED(arg2)) | |
661 | ? 1 : 0; | |
662 | else | |
663 | return arg1==arg2; | |
664 | } | |
665 | ||
666 | /* Returns non-zero if the type is integral */ | |
667 | int | |
668 | integral_type (type) | |
669 | struct type *type; | |
670 | { | |
940d5967 | 671 | CHECK_TYPEDEF (type); |
c8023e66 JG |
672 | switch(current_language->la_language) |
673 | { | |
674 | case language_c: | |
545af6ce | 675 | case language_cplus: |
c8023e66 JG |
676 | return (TYPE_CODE(type) != TYPE_CODE_INT) && |
677 | (TYPE_CODE(type) != TYPE_CODE_ENUM) ? 0 : 1; | |
678 | case language_m2: | |
679 | return TYPE_CODE(type) != TYPE_CODE_INT ? 0 : 1; | |
e58de8a2 FF |
680 | case language_chill: |
681 | error ("Missing Chill support in function integral_type."); /*FIXME*/ | |
c8023e66 JG |
682 | default: |
683 | error ("Language not supported."); | |
684 | } | |
685 | } | |
686 | ||
687 | /* Returns non-zero if the value is numeric */ | |
688 | int | |
689 | numeric_type (type) | |
690 | struct type *type; | |
691 | { | |
940d5967 | 692 | CHECK_TYPEDEF (type); |
c8023e66 JG |
693 | switch (TYPE_CODE (type)) { |
694 | case TYPE_CODE_INT: | |
695 | case TYPE_CODE_FLT: | |
696 | return 1; | |
697 | ||
698 | default: | |
699 | return 0; | |
700 | } | |
701 | } | |
702 | ||
703 | /* Returns non-zero if the value is a character type */ | |
704 | int | |
705 | character_type (type) | |
706 | struct type *type; | |
707 | { | |
940d5967 PB |
708 | CHECK_TYPEDEF (type); |
709 | switch(current_language->la_language) | |
c8023e66 | 710 | { |
2e66cf7d | 711 | case language_chill: |
c8023e66 JG |
712 | case language_m2: |
713 | return TYPE_CODE(type) != TYPE_CODE_CHAR ? 0 : 1; | |
714 | ||
715 | case language_c: | |
545af6ce | 716 | case language_cplus: |
c8023e66 JG |
717 | return (TYPE_CODE(type) == TYPE_CODE_INT) && |
718 | TYPE_LENGTH(type) == sizeof(char) | |
719 | ? 1 : 0; | |
51b57ded FF |
720 | default: |
721 | return (0); | |
c8023e66 JG |
722 | } |
723 | } | |
724 | ||
fcbadaee FF |
725 | /* Returns non-zero if the value is a string type */ |
726 | int | |
727 | string_type (type) | |
728 | struct type *type; | |
729 | { | |
940d5967 PB |
730 | CHECK_TYPEDEF (type); |
731 | switch(current_language->la_language) | |
fcbadaee | 732 | { |
fcbadaee | 733 | case language_chill: |
fcbadaee FF |
734 | case language_m2: |
735 | return TYPE_CODE(type) != TYPE_CODE_STRING ? 0 : 1; | |
736 | ||
737 | case language_c: | |
738 | case language_cplus: | |
739 | /* C does not have distinct string type. */ | |
740 | return (0); | |
741 | default: | |
742 | return (0); | |
743 | } | |
744 | } | |
745 | ||
c8023e66 JG |
746 | /* Returns non-zero if the value is a boolean type */ |
747 | int | |
748 | boolean_type (type) | |
749 | struct type *type; | |
750 | { | |
940d5967 | 751 | CHECK_TYPEDEF (type); |
61932a8e JK |
752 | if (TYPE_CODE (type) == TYPE_CODE_BOOL) |
753 | return 1; | |
754 | switch(current_language->la_language) | |
755 | { | |
756 | case language_c: | |
757 | case language_cplus: | |
758 | /* Might be more cleanly handled by having a TYPE_CODE_INT_NOT_BOOL | |
759 | for CHILL and such languages, or a TYPE_CODE_INT_OR_BOOL for C. */ | |
760 | if (TYPE_CODE (type) == TYPE_CODE_INT) | |
761 | return 1; | |
51b57ded | 762 | default: |
61932a8e | 763 | break; |
c8023e66 | 764 | } |
61932a8e | 765 | return 0; |
c8023e66 JG |
766 | } |
767 | ||
768 | /* Returns non-zero if the value is a floating-point type */ | |
769 | int | |
770 | float_type (type) | |
771 | struct type *type; | |
772 | { | |
940d5967 PB |
773 | CHECK_TYPEDEF (type); |
774 | return TYPE_CODE(type) == TYPE_CODE_FLT; | |
c8023e66 JG |
775 | } |
776 | ||
777 | /* Returns non-zero if the value is a pointer type */ | |
778 | int | |
779 | pointer_type(type) | |
780 | struct type *type; | |
781 | { | |
782 | return TYPE_CODE(type) == TYPE_CODE_PTR || | |
783 | TYPE_CODE(type) == TYPE_CODE_REF; | |
784 | } | |
785 | ||
786 | /* Returns non-zero if the value is a structured type */ | |
787 | int | |
788 | structured_type(type) | |
789 | struct type *type; | |
790 | { | |
940d5967 | 791 | CHECK_TYPEDEF (type); |
c8023e66 JG |
792 | switch(current_language->la_language) |
793 | { | |
794 | case language_c: | |
545af6ce | 795 | case language_cplus: |
c8023e66 JG |
796 | return (TYPE_CODE(type) == TYPE_CODE_STRUCT) || |
797 | (TYPE_CODE(type) == TYPE_CODE_UNION) || | |
798 | (TYPE_CODE(type) == TYPE_CODE_ARRAY); | |
799 | case language_m2: | |
800 | return (TYPE_CODE(type) == TYPE_CODE_STRUCT) || | |
801 | (TYPE_CODE(type) == TYPE_CODE_SET) || | |
802 | (TYPE_CODE(type) == TYPE_CODE_ARRAY); | |
e58de8a2 FF |
803 | case language_chill: |
804 | error ("Missing Chill support in function structured_type."); /*FIXME*/ | |
51b57ded FF |
805 | default: |
806 | return (0); | |
c8023e66 JG |
807 | } |
808 | } | |
940d5967 | 809 | #endif |
c8023e66 | 810 | \f |
a366d882 PB |
811 | struct type * |
812 | lang_bool_type () | |
813 | { | |
814 | struct symbol *sym; | |
815 | struct type *type; | |
816 | switch(current_language->la_language) | |
817 | { | |
818 | case language_chill: | |
819 | return builtin_type_chill_bool; | |
ec5f347c PB |
820 | case language_fortran: |
821 | sym = lookup_symbol ("logical", NULL, VAR_NAMESPACE, NULL, NULL); | |
822 | if (sym) | |
823 | { | |
b52cac6b | 824 | type = SYMBOL_TYPE (sym); |
ec5f347c PB |
825 | if (type && TYPE_CODE (type) == TYPE_CODE_BOOL) |
826 | return type; | |
827 | } | |
828 | return builtin_type_f_logical_s2; | |
a366d882 PB |
829 | case language_cplus: |
830 | sym = lookup_symbol ("bool", NULL, VAR_NAMESPACE, NULL, NULL); | |
831 | if (sym) | |
832 | { | |
b52cac6b | 833 | type = SYMBOL_TYPE (sym); |
a366d882 PB |
834 | if (type && TYPE_CODE (type) == TYPE_CODE_BOOL) |
835 | return type; | |
836 | } | |
837 | /* ... else fall through ... */ | |
838 | default: | |
839 | return builtin_type_int; | |
840 | } | |
841 | } | |
842 | \f | |
c8023e66 JG |
843 | /* This page contains functions that return info about |
844 | (struct value) values used in GDB. */ | |
845 | ||
846 | /* Returns non-zero if the value VAL represents a true value. */ | |
847 | int | |
61932a8e | 848 | value_true (val) |
82a2edfb | 849 | value_ptr val; |
c8023e66 | 850 | { |
61932a8e JK |
851 | /* It is possible that we should have some sort of error if a non-boolean |
852 | value is used in this context. Possibly dependent on some kind of | |
853 | "boolean-checking" option like range checking. But it should probably | |
854 | not depend on the language except insofar as is necessary to identify | |
855 | a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean | |
856 | should be an error, probably). */ | |
857 | return !value_logical_not (val); | |
c8023e66 JG |
858 | } |
859 | \f | |
860 | /* Returns non-zero if the operator OP is defined on | |
861 | the values ARG1 and ARG2. */ | |
7ed0f002 JG |
862 | |
863 | #if 0 /* Currently unused */ | |
864 | ||
c8023e66 JG |
865 | void |
866 | binop_type_check(arg1,arg2,op) | |
82a2edfb | 867 | value_ptr arg1,arg2; |
c8023e66 JG |
868 | int op; |
869 | { | |
870 | struct type *t1, *t2; | |
871 | ||
872 | /* If we're not checking types, always return success. */ | |
873 | if (!STRICT_TYPE) | |
874 | return; | |
875 | ||
876 | t1=VALUE_TYPE(arg1); | |
82a2edfb | 877 | if (arg2 != NULL) |
c8023e66 JG |
878 | t2=VALUE_TYPE(arg2); |
879 | else | |
880 | t2=NULL; | |
881 | ||
882 | switch(op) | |
883 | { | |
884 | case BINOP_ADD: | |
885 | case BINOP_SUB: | |
886 | if ((numeric_type(t1) && pointer_type(t2)) || | |
887 | (pointer_type(t1) && numeric_type(t2))) | |
888 | { | |
318bf84f | 889 | warning ("combining pointer and integer.\n"); |
c8023e66 JG |
890 | break; |
891 | } | |
892 | case BINOP_MUL: | |
893 | case BINOP_LSH: | |
894 | case BINOP_RSH: | |
895 | if (!numeric_type(t1) || !numeric_type(t2)) | |
896 | type_op_error ("Arguments to %s must be numbers.",op); | |
897 | else if (!same_type(t1,t2)) | |
898 | type_op_error ("Arguments to %s must be of the same type.",op); | |
899 | break; | |
900 | ||
e58de8a2 FF |
901 | case BINOP_LOGICAL_AND: |
902 | case BINOP_LOGICAL_OR: | |
c8023e66 JG |
903 | if (!boolean_type(t1) || !boolean_type(t2)) |
904 | type_op_error ("Arguments to %s must be of boolean type.",op); | |
905 | break; | |
906 | ||
907 | case BINOP_EQUAL: | |
908 | if ((pointer_type(t1) && !(pointer_type(t2) || integral_type(t2))) || | |
909 | (pointer_type(t2) && !(pointer_type(t1) || integral_type(t1)))) | |
910 | type_op_error ("A pointer can only be compared to an integer or pointer.",op); | |
911 | else if ((pointer_type(t1) && integral_type(t2)) || | |
912 | (integral_type(t1) && pointer_type(t2))) | |
913 | { | |
318bf84f | 914 | warning ("combining integer and pointer.\n"); |
c8023e66 JG |
915 | break; |
916 | } | |
917 | else if (!simple_type(t1) || !simple_type(t2)) | |
918 | type_op_error ("Arguments to %s must be of simple type.",op); | |
919 | else if (!same_type(t1,t2)) | |
920 | type_op_error ("Arguments to %s must be of the same type.",op); | |
921 | break; | |
922 | ||
923 | case BINOP_REM: | |
76a0ffb4 | 924 | case BINOP_MOD: |
c8023e66 JG |
925 | if (!integral_type(t1) || !integral_type(t2)) |
926 | type_op_error ("Arguments to %s must be of integral type.",op); | |
927 | break; | |
928 | ||
929 | case BINOP_LESS: | |
930 | case BINOP_GTR: | |
931 | case BINOP_LEQ: | |
932 | case BINOP_GEQ: | |
933 | if (!ordered_type(t1) || !ordered_type(t2)) | |
934 | type_op_error ("Arguments to %s must be of ordered type.",op); | |
935 | else if (!same_type(t1,t2)) | |
936 | type_op_error ("Arguments to %s must be of the same type.",op); | |
937 | break; | |
938 | ||
939 | case BINOP_ASSIGN: | |
940 | if (pointer_type(t1) && !integral_type(t2)) | |
941 | type_op_error ("A pointer can only be assigned an integer.",op); | |
942 | else if (pointer_type(t1) && integral_type(t2)) | |
943 | { | |
318bf84f | 944 | warning ("combining integer and pointer."); |
c8023e66 JG |
945 | break; |
946 | } | |
947 | else if (!simple_type(t1) || !simple_type(t2)) | |
948 | type_op_error ("Arguments to %s must be of simple type.",op); | |
949 | else if (!same_type(t1,t2)) | |
950 | type_op_error ("Arguments to %s must be of the same type.",op); | |
951 | break; | |
952 | ||
fcbadaee | 953 | case BINOP_CONCAT: |
2fcc38b8 FF |
954 | /* FIXME: Needs to handle bitstrings as well. */ |
955 | if (!(string_type(t1) || character_type(t1) || integral_type(t1)) | |
956 | || !(string_type(t2) || character_type(t2) || integral_type(t2))) | |
fcbadaee FF |
957 | type_op_error ("Arguments to %s must be strings or characters.", op); |
958 | break; | |
959 | ||
c8023e66 JG |
960 | /* Unary checks -- arg2 is null */ |
961 | ||
e58de8a2 | 962 | case UNOP_LOGICAL_NOT: |
c8023e66 JG |
963 | if (!boolean_type(t1)) |
964 | type_op_error ("Argument to %s must be of boolean type.",op); | |
965 | break; | |
966 | ||
967 | case UNOP_PLUS: | |
968 | case UNOP_NEG: | |
969 | if (!numeric_type(t1)) | |
970 | type_op_error ("Argument to %s must be of numeric type.",op); | |
971 | break; | |
972 | ||
973 | case UNOP_IND: | |
974 | if (integral_type(t1)) | |
975 | { | |
318bf84f | 976 | warning ("combining pointer and integer.\n"); |
c8023e66 JG |
977 | break; |
978 | } | |
979 | else if (!pointer_type(t1)) | |
980 | type_op_error ("Argument to %s must be a pointer.",op); | |
981 | break; | |
982 | ||
983 | case UNOP_PREINCREMENT: | |
984 | case UNOP_POSTINCREMENT: | |
985 | case UNOP_PREDECREMENT: | |
986 | case UNOP_POSTDECREMENT: | |
987 | if (!ordered_type(t1)) | |
988 | type_op_error ("Argument to %s must be of an ordered type.",op); | |
989 | break; | |
990 | ||
991 | default: | |
992 | /* Ok. The following operators have different meanings in | |
993 | different languages. */ | |
994 | switch(current_language->la_language) | |
995 | { | |
996 | #ifdef _LANG_c | |
997 | case language_c: | |
545af6ce | 998 | case language_cplus: |
c8023e66 JG |
999 | switch(op) |
1000 | { | |
1001 | case BINOP_DIV: | |
1002 | if (!numeric_type(t1) || !numeric_type(t2)) | |
1003 | type_op_error ("Arguments to %s must be numbers.",op); | |
1004 | break; | |
1005 | } | |
1006 | break; | |
1007 | #endif | |
1008 | ||
1009 | #ifdef _LANG_m2 | |
1010 | case language_m2: | |
1011 | switch(op) | |
1012 | { | |
1013 | case BINOP_DIV: | |
1014 | if (!float_type(t1) || !float_type(t2)) | |
1015 | type_op_error ("Arguments to %s must be floating point numbers.",op); | |
1016 | break; | |
1017 | case BINOP_INTDIV: | |
1018 | if (!integral_type(t1) || !integral_type(t2)) | |
1019 | type_op_error ("Arguments to %s must be of integral type.",op); | |
1020 | break; | |
1021 | } | |
1022 | #endif | |
e58de8a2 FF |
1023 | |
1024 | #ifdef _LANG_chill | |
1025 | case language_chill: | |
1026 | error ("Missing Chill support in function binop_type_check.");/*FIXME*/ | |
1027 | #endif | |
1028 | ||
c8023e66 JG |
1029 | } |
1030 | } | |
1031 | } | |
7ed0f002 JG |
1032 | |
1033 | #endif /* 0 */ | |
1034 | ||
c8023e66 JG |
1035 | \f |
1036 | /* This page contains functions for the printing out of | |
1037 | error messages that occur during type- and range- | |
1038 | checking. */ | |
1039 | ||
1040 | /* Prints the format string FMT with the operator as a string | |
1041 | corresponding to the opcode OP. If FATAL is non-zero, then | |
1042 | this is an error and error () is called. Otherwise, it is | |
1043 | a warning and printf() is called. */ | |
1044 | void | |
1045 | op_error (fmt,op,fatal) | |
1046 | char *fmt; | |
1047 | enum exp_opcode op; | |
1048 | int fatal; | |
1049 | { | |
1050 | if (fatal) | |
1051 | error (fmt,op_string(op)); | |
1052 | else | |
1053 | { | |
318bf84f | 1054 | warning (fmt,op_string(op)); |
c8023e66 JG |
1055 | } |
1056 | } | |
1057 | ||
1058 | /* These are called when a language fails a type- or range-check. | |
1059 | The first argument should be a printf()-style format string, and | |
1060 | the rest of the arguments should be its arguments. If | |
1061 | [type|range]_check is [type|range]_check_on, then return_to_top_level() | |
1062 | is called in the style of error (). Otherwise, the message is prefixed | |
318bf84f | 1063 | by the value of warning_pre_print and we do not return to the top level. */ |
7ed0f002 | 1064 | |
c8023e66 | 1065 | void |
73d3dbd4 | 1066 | #ifdef ANSI_PROTOTYPES |
85c613aa C |
1067 | type_error (char *string, ...) |
1068 | #else | |
c8023e66 | 1069 | type_error (va_alist) |
7ed0f002 | 1070 | va_dcl |
85c613aa | 1071 | #endif |
c8023e66 JG |
1072 | { |
1073 | va_list args; | |
73d3dbd4 | 1074 | #ifdef ANSI_PROTOTYPES |
85c613aa C |
1075 | va_start (args, string); |
1076 | #else | |
c8023e66 | 1077 | char *string; |
85c613aa C |
1078 | va_start (args); |
1079 | string = va_arg (args, char *); | |
1080 | #endif | |
c8023e66 | 1081 | |
a0cf4681 | 1082 | if (type_check == type_check_warn) |
e16b9023 | 1083 | fprintf_filtered (gdb_stderr, warning_pre_print); |
c8023e66 | 1084 | else |
a0cf4681 | 1085 | error_begin (); |
c8023e66 | 1086 | |
e16b9023 JK |
1087 | vfprintf_filtered (gdb_stderr, string, args); |
1088 | fprintf_filtered (gdb_stderr, "\n"); | |
c8023e66 | 1089 | va_end (args); |
a0cf4681 JK |
1090 | if (type_check == type_check_on) |
1091 | return_to_top_level (RETURN_ERROR); | |
c8023e66 JG |
1092 | } |
1093 | ||
1094 | void | |
73d3dbd4 | 1095 | #ifdef ANSI_PROTOTYPES |
85c613aa C |
1096 | range_error (char *string, ...) |
1097 | #else | |
c8023e66 | 1098 | range_error (va_alist) |
7ed0f002 | 1099 | va_dcl |
85c613aa | 1100 | #endif |
c8023e66 JG |
1101 | { |
1102 | va_list args; | |
73d3dbd4 | 1103 | #ifdef ANSI_PROTOTYPES |
85c613aa C |
1104 | va_start (args, string); |
1105 | #else | |
c8023e66 | 1106 | char *string; |
85c613aa C |
1107 | va_start (args); |
1108 | string = va_arg (args, char *); | |
1109 | #endif | |
c8023e66 | 1110 | |
a0cf4681 | 1111 | if (range_check == range_check_warn) |
e16b9023 | 1112 | fprintf_filtered (gdb_stderr, warning_pre_print); |
c8023e66 | 1113 | else |
a0cf4681 | 1114 | error_begin (); |
c8023e66 | 1115 | |
e16b9023 JK |
1116 | vfprintf_filtered (gdb_stderr, string, args); |
1117 | fprintf_filtered (gdb_stderr, "\n"); | |
c8023e66 | 1118 | va_end (args); |
a0cf4681 JK |
1119 | if (range_check == range_check_on) |
1120 | return_to_top_level (RETURN_ERROR); | |
c8023e66 JG |
1121 | } |
1122 | ||
1123 | \f | |
1124 | /* This page contains miscellaneous functions */ | |
1125 | ||
e1dba9c4 MS |
1126 | /* Return the language enum for a given language string. */ |
1127 | ||
1128 | enum language | |
1129 | language_enum (str) | |
1130 | char *str; | |
1131 | { | |
1132 | int i; | |
1133 | ||
1134 | for (i = 0; i < languages_size; i++) | |
1135 | if (STREQ (languages[i]->la_name, str)) | |
1136 | return languages[i]->la_language; | |
1137 | ||
1138 | return language_unknown; | |
1139 | } | |
1140 | ||
bf229b4e FF |
1141 | /* Return the language struct for a given language enum. */ |
1142 | ||
1143 | const struct language_defn * | |
1144 | language_def(lang) | |
1145 | enum language lang; | |
1146 | { | |
1147 | int i; | |
1148 | ||
1149 | for (i = 0; i < languages_size; i++) { | |
1150 | if (languages[i]->la_language == lang) { | |
1151 | return languages[i]; | |
1152 | } | |
1153 | } | |
1154 | return NULL; | |
1155 | } | |
1156 | ||
c8023e66 JG |
1157 | /* Return the language as a string */ |
1158 | char * | |
1159 | language_str(lang) | |
1160 | enum language lang; | |
1161 | { | |
1162 | int i; | |
1163 | ||
1164 | for (i = 0; i < languages_size; i++) { | |
1165 | if (languages[i]->la_language == lang) { | |
1166 | return languages[i]->la_name; | |
1167 | } | |
1168 | } | |
1169 | return "Unknown"; | |
1170 | } | |
1171 | ||
c8023e66 | 1172 | static void |
d8ce1326 JG |
1173 | set_check (ignore, from_tty) |
1174 | char *ignore; | |
c8023e66 JG |
1175 | int from_tty; |
1176 | { | |
199b2450 | 1177 | printf_unfiltered( |
c8023e66 | 1178 | "\"set check\" must be followed by the name of a check subcommand.\n"); |
199b2450 | 1179 | help_list(setchecklist, "set check ", -1, gdb_stdout); |
c8023e66 JG |
1180 | } |
1181 | ||
1182 | static void | |
be772100 JG |
1183 | show_check (ignore, from_tty) |
1184 | char *ignore; | |
c8023e66 JG |
1185 | int from_tty; |
1186 | { | |
1187 | cmd_show_list(showchecklist, from_tty, ""); | |
1188 | } | |
1189 | \f | |
1190 | /* Add a language to the set of known languages. */ | |
1191 | ||
1192 | void | |
1193 | add_language (lang) | |
7ed0f002 | 1194 | const struct language_defn *lang; |
c8023e66 JG |
1195 | { |
1196 | if (lang->la_magic != LANG_MAGIC) | |
1197 | { | |
199b2450 | 1198 | fprintf_unfiltered(gdb_stderr, "Magic number of %s language struct wrong\n", |
c8023e66 JG |
1199 | lang->la_name); |
1200 | abort(); | |
1201 | } | |
1202 | ||
1203 | if (!languages) | |
1204 | { | |
1205 | languages_allocsize = DEFAULT_ALLOCSIZE; | |
7ed0f002 | 1206 | languages = (const struct language_defn **) xmalloc |
c8023e66 JG |
1207 | (languages_allocsize * sizeof (*languages)); |
1208 | } | |
1209 | if (languages_size >= languages_allocsize) | |
1210 | { | |
1211 | languages_allocsize *= 2; | |
7ed0f002 | 1212 | languages = (const struct language_defn **) xrealloc ((char *) languages, |
c8023e66 JG |
1213 | languages_allocsize * sizeof (*languages)); |
1214 | } | |
1215 | languages[languages_size++] = lang; | |
c8023e66 JG |
1216 | } |
1217 | ||
1218 | /* Define the language that is no language. */ | |
1219 | ||
7ed0f002 | 1220 | static int |
c8023e66 JG |
1221 | unk_lang_parser () |
1222 | { | |
1223 | return 1; | |
1224 | } | |
1225 | ||
7ed0f002 JG |
1226 | static void |
1227 | unk_lang_error (msg) | |
1228 | char *msg; | |
c8023e66 JG |
1229 | { |
1230 | error ("Attempted to parse an expression with unknown language"); | |
1231 | } | |
1232 | ||
242c0d81 SG |
1233 | static void |
1234 | unk_lang_emit_char (c, stream, quoter) | |
1235 | register int c; | |
1236 | GDB_FILE *stream; | |
1237 | int quoter; | |
1238 | { | |
1239 | error ("internal error - unimplemented function unk_lang_emit_char called."); | |
1240 | } | |
1241 | ||
5d074aa9 FF |
1242 | static void |
1243 | unk_lang_printchar (c, stream) | |
1244 | register int c; | |
199b2450 | 1245 | GDB_FILE *stream; |
5d074aa9 FF |
1246 | { |
1247 | error ("internal error - unimplemented function unk_lang_printchar called."); | |
1248 | } | |
1249 | ||
1250 | static void | |
242c0d81 | 1251 | unk_lang_printstr (stream, string, length, width, force_ellipses) |
199b2450 | 1252 | GDB_FILE *stream; |
5d074aa9 FF |
1253 | char *string; |
1254 | unsigned int length; | |
242c0d81 | 1255 | int width; |
5d074aa9 FF |
1256 | int force_ellipses; |
1257 | { | |
1258 | error ("internal error - unimplemented function unk_lang_printstr called."); | |
1259 | } | |
1260 | ||
bf229b4e FF |
1261 | static struct type * |
1262 | unk_lang_create_fundamental_type (objfile, typeid) | |
1263 | struct objfile *objfile; | |
1264 | int typeid; | |
1265 | { | |
1266 | error ("internal error - unimplemented function unk_lang_create_fundamental_type called."); | |
1267 | } | |
1268 | ||
b607efe7 | 1269 | static void |
a8a69e63 FF |
1270 | unk_lang_print_type (type, varstring, stream, show, level) |
1271 | struct type *type; | |
1272 | char *varstring; | |
199b2450 | 1273 | GDB_FILE *stream; |
a8a69e63 FF |
1274 | int show; |
1275 | int level; | |
1276 | { | |
1277 | error ("internal error - unimplemented function unk_lang_print_type called."); | |
1278 | } | |
1279 | ||
b607efe7 | 1280 | static int |
a8a69e63 FF |
1281 | unk_lang_val_print (type, valaddr, address, stream, format, deref_ref, |
1282 | recurse, pretty) | |
1283 | struct type *type; | |
1284 | char *valaddr; | |
1285 | CORE_ADDR address; | |
199b2450 | 1286 | GDB_FILE *stream; |
a8a69e63 FF |
1287 | int format; |
1288 | int deref_ref; | |
1289 | int recurse; | |
1290 | enum val_prettyprint pretty; | |
1291 | { | |
1292 | error ("internal error - unimplemented function unk_lang_val_print called."); | |
1293 | } | |
1294 | ||
b607efe7 | 1295 | static int |
e10cfcaa PB |
1296 | unk_lang_value_print (val, stream, format, pretty) |
1297 | value_ptr val; | |
1298 | GDB_FILE *stream; | |
1299 | int format; | |
1300 | enum val_prettyprint pretty; | |
1301 | { | |
1302 | error ("internal error - unimplemented function unk_lang_value_print called."); | |
1303 | } | |
1304 | ||
8501c742 | 1305 | static struct type ** CONST_PTR (unknown_builtin_types[]) = { 0 }; |
a8a69e63 | 1306 | static const struct op_print unk_op_print_tab[] = { |
8631194d | 1307 | {NULL, OP_NULL, PREC_NULL, 0} |
a8a69e63 | 1308 | }; |
c8023e66 JG |
1309 | |
1310 | const struct language_defn unknown_language_defn = { | |
1311 | "unknown", | |
1312 | language_unknown, | |
1313 | &unknown_builtin_types[0], | |
1314 | range_check_off, | |
1315 | type_check_off, | |
1316 | unk_lang_parser, | |
1317 | unk_lang_error, | |
7398958c | 1318 | evaluate_subexp_standard, |
5d074aa9 FF |
1319 | unk_lang_printchar, /* Print character constant */ |
1320 | unk_lang_printstr, | |
242c0d81 | 1321 | unk_lang_emit_char, |
bf229b4e | 1322 | unk_lang_create_fundamental_type, |
a8a69e63 FF |
1323 | unk_lang_print_type, /* Print a type using appropriate syntax */ |
1324 | unk_lang_val_print, /* Print a value using appropriate syntax */ | |
e10cfcaa | 1325 | unk_lang_value_print, /* Print a top-level value */ |
2e66cf7d | 1326 | {"", "", "", ""}, /* Binary format info */ |
5573d7d4 JK |
1327 | {"0%lo", "0", "o", ""}, /* Octal format info */ |
1328 | {"%ld", "", "d", ""}, /* Decimal format info */ | |
1329 | {"0x%lx", "0x", "x", ""}, /* Hex format info */ | |
c8023e66 | 1330 | unk_op_print_tab, /* expression operators for printing */ |
acc4efde | 1331 | 1, /* c-style arrays */ |
ead95f8a PB |
1332 | 0, /* String lower bound */ |
1333 | &builtin_type_char, /* Type of string elements */ | |
c8023e66 JG |
1334 | LANG_MAGIC |
1335 | }; | |
1336 | ||
1337 | /* These two structs define fake entries for the "local" and "auto" options. */ | |
1338 | const struct language_defn auto_language_defn = { | |
1339 | "auto", | |
1340 | language_auto, | |
1341 | &unknown_builtin_types[0], | |
1342 | range_check_off, | |
1343 | type_check_off, | |
1344 | unk_lang_parser, | |
1345 | unk_lang_error, | |
7398958c | 1346 | evaluate_subexp_standard, |
5d074aa9 FF |
1347 | unk_lang_printchar, /* Print character constant */ |
1348 | unk_lang_printstr, | |
242c0d81 | 1349 | unk_lang_emit_char, |
bf229b4e | 1350 | unk_lang_create_fundamental_type, |
a8a69e63 FF |
1351 | unk_lang_print_type, /* Print a type using appropriate syntax */ |
1352 | unk_lang_val_print, /* Print a value using appropriate syntax */ | |
e10cfcaa | 1353 | unk_lang_value_print, /* Print a top-level value */ |
2e66cf7d | 1354 | {"", "", "", ""}, /* Binary format info */ |
5573d7d4 JK |
1355 | {"0%lo", "0", "o", ""}, /* Octal format info */ |
1356 | {"%ld", "", "d", ""}, /* Decimal format info */ | |
1357 | {"0x%lx", "0x", "x", ""}, /* Hex format info */ | |
c8023e66 | 1358 | unk_op_print_tab, /* expression operators for printing */ |
acc4efde | 1359 | 1, /* c-style arrays */ |
ead95f8a PB |
1360 | 0, /* String lower bound */ |
1361 | &builtin_type_char, /* Type of string elements */ | |
c8023e66 JG |
1362 | LANG_MAGIC |
1363 | }; | |
1364 | ||
1365 | const struct language_defn local_language_defn = { | |
1366 | "local", | |
1367 | language_auto, | |
1368 | &unknown_builtin_types[0], | |
1369 | range_check_off, | |
1370 | type_check_off, | |
1371 | unk_lang_parser, | |
1372 | unk_lang_error, | |
7398958c | 1373 | evaluate_subexp_standard, |
5d074aa9 FF |
1374 | unk_lang_printchar, /* Print character constant */ |
1375 | unk_lang_printstr, | |
242c0d81 | 1376 | unk_lang_emit_char, |
bf229b4e | 1377 | unk_lang_create_fundamental_type, |
a8a69e63 FF |
1378 | unk_lang_print_type, /* Print a type using appropriate syntax */ |
1379 | unk_lang_val_print, /* Print a value using appropriate syntax */ | |
e10cfcaa | 1380 | unk_lang_value_print, /* Print a top-level value */ |
2e66cf7d | 1381 | {"", "", "", ""}, /* Binary format info */ |
5573d7d4 JK |
1382 | {"0%lo", "0", "o", ""}, /* Octal format info */ |
1383 | {"%ld", "", "d", ""}, /* Decimal format info */ | |
1384 | {"0x%lx", "0x", "x", ""}, /* Hex format info */ | |
c8023e66 | 1385 | unk_op_print_tab, /* expression operators for printing */ |
acc4efde | 1386 | 1, /* c-style arrays */ |
ead95f8a PB |
1387 | 0, /* String lower bound */ |
1388 | &builtin_type_char, /* Type of string elements */ | |
c8023e66 JG |
1389 | LANG_MAGIC |
1390 | }; | |
1391 | \f | |
1392 | /* Initialize the language routines */ | |
1393 | ||
1394 | void | |
1395 | _initialize_language() | |
1396 | { | |
1397 | struct cmd_list_element *set, *show; | |
1398 | ||
1399 | /* GDB commands for language specific stuff */ | |
1400 | ||
1401 | set = add_set_cmd ("language", class_support, var_string_noescape, | |
1402 | (char *)&language, | |
0b798409 | 1403 | "Set the current source language.", |
c8023e66 JG |
1404 | &setlist); |
1405 | show = add_show_from_set (set, &showlist); | |
1ab3bf1b JG |
1406 | set->function.cfunc = set_language_command; |
1407 | show->function.cfunc = show_language_command; | |
c8023e66 JG |
1408 | |
1409 | add_prefix_cmd ("check", no_class, set_check, | |
1410 | "Set the status of the type/range checker", | |
1411 | &setchecklist, "set check ", 0, &setlist); | |
1412 | add_alias_cmd ("c", "check", no_class, 1, &setlist); | |
1413 | add_alias_cmd ("ch", "check", no_class, 1, &setlist); | |
1414 | ||
1415 | add_prefix_cmd ("check", no_class, show_check, | |
1416 | "Show the status of the type/range checker", | |
7cb83757 | 1417 | &showchecklist, "show check ", 0, &showlist); |
c8023e66 JG |
1418 | add_alias_cmd ("c", "check", no_class, 1, &showlist); |
1419 | add_alias_cmd ("ch", "check", no_class, 1, &showlist); | |
1420 | ||
1421 | set = add_set_cmd ("type", class_support, var_string_noescape, | |
1422 | (char *)&type, | |
7cb83757 | 1423 | "Set type checking. (on/warn/off/auto)", |
c8023e66 JG |
1424 | &setchecklist); |
1425 | show = add_show_from_set (set, &showchecklist); | |
1ab3bf1b JG |
1426 | set->function.cfunc = set_type_command; |
1427 | show->function.cfunc = show_type_command; | |
c8023e66 JG |
1428 | |
1429 | set = add_set_cmd ("range", class_support, var_string_noescape, | |
1430 | (char *)&range, | |
7cb83757 | 1431 | "Set range checking. (on/warn/off/auto)", |
c8023e66 JG |
1432 | &setchecklist); |
1433 | show = add_show_from_set (set, &showchecklist); | |
1ab3bf1b JG |
1434 | set->function.cfunc = set_range_command; |
1435 | show->function.cfunc = show_range_command; | |
c8023e66 JG |
1436 | |
1437 | add_language (&unknown_language_defn); | |
1438 | add_language (&local_language_defn); | |
1439 | add_language (&auto_language_defn); | |
1440 | ||
1441 | language = savestring ("auto",strlen("auto")); | |
1442 | range = savestring ("auto",strlen("auto")); | |
1443 | type = savestring ("auto",strlen("auto")); | |
1444 | ||
1445 | /* Have the above take effect */ | |
1446 | ||
5f3d478e | 1447 | set_language_command (language, 0); |
c8023e66 JG |
1448 | set_type_command (NULL, 0); |
1449 | set_range_command (NULL, 0); | |
1450 | } |