mac80211: disable ath6kl until it's packaged and used somewhere
[openwrt.git] / scripts / config / symbol.c
1 /*
2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
4 */
5
6 #include <ctype.h>
7 #include <stdlib.h>
8 #include <string.h>
9 #include <regex.h>
10 #include <sys/utsname.h>
11
12 #define LKC_DIRECT_LINK
13 #include "lkc.h"
14
15 struct symbol symbol_yes = {
16 .name = "y",
17 .curr = { "y", yes },
18 .flags = SYMBOL_YES|SYMBOL_VALID,
19 }, symbol_mod = {
20 .name = "m",
21 .curr = { "m", mod },
22 .flags = SYMBOL_MOD|SYMBOL_VALID,
23 }, symbol_no = {
24 .name = "n",
25 .curr = { "n", no },
26 .flags = SYMBOL_NO|SYMBOL_VALID,
27 }, symbol_empty = {
28 .name = "",
29 .curr = { "", no },
30 .flags = SYMBOL_VALID,
31 };
32
33 int sym_change_count;
34 struct symbol *modules_sym;
35 tristate modules_val;
36
37 void sym_add_default(struct symbol *sym, const char *def)
38 {
39 struct property *prop = prop_alloc(P_DEFAULT, sym);
40
41 prop->expr = expr_alloc_symbol(sym_lookup(def, 1));
42 }
43
44 void sym_init(void)
45 {
46 struct symbol *sym;
47 struct utsname uts;
48 char *p;
49 static bool inited = false;
50
51 if (inited)
52 return;
53 inited = true;
54
55 uname(&uts);
56
57 sym = sym_lookup("ARCH", 0);
58 sym->type = S_STRING;
59 p = getenv("ARCH");
60 if (p)
61 sym_add_default(sym, p);
62
63 sym = sym_lookup("OPENWRTVERSION", 0);
64 sym->type = S_STRING;
65 sym->flags |= SYMBOL_AUTO;
66 p = getenv("OPENWRTVERSION");
67 if (p)
68 sym_add_default(sym, p);
69
70 sym = sym_lookup("UNAME_RELEASE", 0);
71 sym->type = S_STRING;
72 sym->flags |= SYMBOL_AUTO;
73 sym_add_default(sym, uts.release);
74 }
75
76 enum symbol_type sym_get_type(struct symbol *sym)
77 {
78 enum symbol_type type = sym->type;
79
80 if (type == S_TRISTATE) {
81 if (sym_is_choice_value(sym) && sym->visible == yes)
82 type = S_BOOLEAN;
83 /* tristate always enabled */
84 #if 0
85 else if (modules_val == no)
86 type = S_BOOLEAN;
87 #endif
88 }
89 return type;
90 }
91
92 const char *sym_type_name(enum symbol_type type)
93 {
94 switch (type) {
95 case S_BOOLEAN:
96 return "boolean";
97 case S_TRISTATE:
98 return "tristate";
99 case S_INT:
100 return "integer";
101 case S_HEX:
102 return "hex";
103 case S_STRING:
104 return "string";
105 case S_UNKNOWN:
106 return "unknown";
107 case S_OTHER:
108 break;
109 }
110 return "???";
111 }
112
113 struct property *sym_get_choice_prop(struct symbol *sym)
114 {
115 struct property *prop;
116
117 for_all_choices(sym, prop)
118 return prop;
119 return NULL;
120 }
121
122 struct property *sym_get_default_prop(struct symbol *sym)
123 {
124 struct property *prop;
125
126 for_all_defaults(sym, prop) {
127 prop->visible.tri = expr_calc_value(prop->visible.expr);
128 if (prop->visible.tri != no)
129 return prop;
130 }
131 return NULL;
132 }
133
134 struct property *sym_get_range_prop(struct symbol *sym)
135 {
136 struct property *prop;
137
138 for_all_properties(sym, prop, P_RANGE) {
139 prop->visible.tri = expr_calc_value(prop->visible.expr);
140 if (prop->visible.tri != no)
141 return prop;
142 }
143 return NULL;
144 }
145
146 static int sym_get_range_val(struct symbol *sym, int base)
147 {
148 sym_calc_value(sym);
149 switch (sym->type) {
150 case S_INT:
151 base = 10;
152 break;
153 case S_HEX:
154 base = 16;
155 break;
156 default:
157 break;
158 }
159 return strtol(sym->curr.val, NULL, base);
160 }
161
162 static void sym_validate_range(struct symbol *sym)
163 {
164 struct property *prop;
165 int base, val, val2;
166 char str[64];
167
168 switch (sym->type) {
169 case S_INT:
170 base = 10;
171 break;
172 case S_HEX:
173 base = 16;
174 break;
175 default:
176 return;
177 }
178 prop = sym_get_range_prop(sym);
179 if (!prop)
180 return;
181 val = strtol(sym->curr.val, NULL, base);
182 val2 = sym_get_range_val(prop->expr->left.sym, base);
183 if (val >= val2) {
184 val2 = sym_get_range_val(prop->expr->right.sym, base);
185 if (val <= val2)
186 return;
187 }
188 if (sym->type == S_INT)
189 sprintf(str, "%d", val2);
190 else
191 sprintf(str, "0x%x", val2);
192 sym->curr.val = strdup(str);
193 }
194
195 static void sym_calc_visibility(struct symbol *sym)
196 {
197 struct property *prop;
198 tristate tri;
199 int deselected = 0;
200
201 /* any prompt visible? */
202 tri = no;
203 for_all_prompts(sym, prop) {
204 prop->visible.tri = expr_calc_value(prop->visible.expr);
205 tri = E_OR(tri, prop->visible.tri);
206 }
207 if (tri == mod && (sym->type != S_TRISTATE))
208 tri = yes;
209 if (sym->rev_dep_inv.expr && (expr_calc_value(sym->rev_dep_inv.expr) == yes)) {
210 tri = no;
211 deselected = 1;
212 }
213 if (sym->visible != tri) {
214 sym->visible = tri;
215 sym_set_changed(sym);
216 }
217 if (sym_is_choice_value(sym) || deselected)
218 return;
219 tri = no;
220 if (sym->rev_dep.expr)
221 tri = expr_calc_value(sym->rev_dep.expr);
222 if (tri == mod && sym_get_type(sym) == S_BOOLEAN)
223 tri = yes;
224 if (sym->rev_dep.tri != tri) {
225 sym->rev_dep.tri = tri;
226 sym_set_changed(sym);
227 }
228 }
229
230 static struct symbol *sym_calc_choice(struct symbol *sym)
231 {
232 struct symbol *def_sym;
233 struct property *prop;
234 struct expr *e;
235
236 /* is the user choice visible? */
237 def_sym = sym->user.val;
238 if (def_sym) {
239 sym_calc_visibility(def_sym);
240 if (def_sym->visible != no)
241 return def_sym;
242 }
243
244 /* any of the defaults visible? */
245 for_all_defaults(sym, prop) {
246 prop->visible.tri = expr_calc_value(prop->visible.expr);
247 if (prop->visible.tri == no)
248 continue;
249 def_sym = prop_get_symbol(prop);
250 sym_calc_visibility(def_sym);
251 if (def_sym->visible != no)
252 return def_sym;
253 }
254
255 /* just get the first visible value */
256 prop = sym_get_choice_prop(sym);
257 for (e = prop->expr; e; e = e->left.expr) {
258 def_sym = e->right.sym;
259 sym_calc_visibility(def_sym);
260 if (def_sym->visible != no)
261 return def_sym;
262 }
263
264 /* no choice? reset tristate value */
265 sym->curr.tri = no;
266 return NULL;
267 }
268
269 void sym_set_changed(struct symbol *sym)
270 {
271 struct property *prop;
272
273 sym->flags |= SYMBOL_CHANGED;
274 for (prop = sym->prop; prop; prop = prop->next) {
275 if (prop->menu)
276 prop->menu->flags |= MENU_CHANGED;
277 }
278 }
279
280 void sym_set_all_changed(void)
281 {
282 struct symbol *sym;
283 int i;
284
285 for_all_symbols(i, sym)
286 sym_set_changed(sym);
287 }
288
289 void sym_calc_value(struct symbol *sym)
290 {
291 struct symbol_value newval, oldval;
292 struct property *prop;
293 struct expr *e;
294
295 if (!sym)
296 return;
297
298 if (sym->flags & SYMBOL_VALID)
299 return;
300 sym->flags |= SYMBOL_VALID;
301
302 oldval = sym->curr;
303
304 switch (sym->type) {
305 case S_INT:
306 case S_HEX:
307 case S_STRING:
308 newval = symbol_empty.curr;
309 break;
310 case S_BOOLEAN:
311 case S_TRISTATE:
312 newval = symbol_no.curr;
313 break;
314 default:
315 sym->curr.val = sym->name;
316 sym->curr.tri = no;
317 return;
318 }
319 if (!sym_is_choice_value(sym))
320 sym->flags &= ~SYMBOL_WRITE;
321
322 sym_calc_visibility(sym);
323
324 /* set default if recursively called */
325 sym->curr = newval;
326
327 switch (sym_get_type(sym)) {
328 case S_BOOLEAN:
329 case S_TRISTATE:
330 if (sym_is_choice_value(sym) && sym->visible == yes) {
331 prop = sym_get_choice_prop(sym);
332 newval.tri = (prop_get_symbol(prop)->curr.val == sym) ? yes : no;
333 } else if (sym->rev_dep_inv.expr && (expr_calc_value(sym->rev_dep_inv.expr) == yes)) {
334 newval.tri = no;
335 } else if (E_OR(sym->visible, sym->rev_dep.tri) != no) {
336 sym->flags |= SYMBOL_WRITE;
337 if (sym_has_value(sym))
338 newval.tri = sym->user.tri;
339 else if (!sym_is_choice(sym)) {
340 prop = sym_get_default_prop(sym);
341 if (prop)
342 newval.tri = expr_calc_value(prop->expr);
343 }
344 newval.tri = E_OR(E_AND(newval.tri, sym->visible), sym->rev_dep.tri);
345 } else if (!sym_is_choice(sym)) {
346 prop = sym_get_default_prop(sym);
347 if (prop) {
348 sym->flags |= SYMBOL_WRITE;
349 newval.tri = expr_calc_value(prop->expr);
350 }
351 }
352 if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN)
353 newval.tri = yes;
354 break;
355 case S_STRING:
356 case S_HEX:
357 case S_INT:
358 if (sym->visible != no) {
359 sym->flags |= SYMBOL_WRITE;
360 if (sym_has_value(sym)) {
361 newval.val = sym->user.val;
362 break;
363 }
364 }
365 prop = sym_get_default_prop(sym);
366 if (prop) {
367 struct symbol *ds = prop_get_symbol(prop);
368 if (ds) {
369 sym->flags |= SYMBOL_WRITE;
370 sym_calc_value(ds);
371 newval.val = ds->curr.val;
372 }
373 }
374 break;
375 default:
376 ;
377 }
378
379 sym->curr = newval;
380 if (sym_is_choice(sym) && newval.tri == yes)
381 sym->curr.val = sym_calc_choice(sym);
382 sym_validate_range(sym);
383
384 if (memcmp(&oldval, &sym->curr, sizeof(oldval))) {
385 sym->flags &= ~SYMBOL_VALID;
386 sym_set_changed(sym);
387 if (modules_sym == sym) {
388 sym_set_all_changed();
389 modules_val = modules_sym->curr.tri;
390 }
391 }
392
393 if (sym_is_choice(sym)) {
394 int flags = sym->flags & (SYMBOL_CHANGED | SYMBOL_WRITE);
395 prop = sym_get_choice_prop(sym);
396 for (e = prop->expr; e; e = e->left.expr) {
397 e->right.sym->flags |= flags;
398 if (flags & SYMBOL_CHANGED)
399 sym_set_changed(e->right.sym);
400 }
401 }
402
403 if (sym->flags & SYMBOL_AUTO)
404 sym->flags &= ~SYMBOL_WRITE;
405 }
406
407 void sym_clear_all_valid(void)
408 {
409 struct symbol *sym;
410 int i;
411
412 for_all_symbols(i, sym)
413 sym->flags &= ~SYMBOL_VALID;
414 sym_change_count++;
415 if (modules_sym)
416 sym_calc_value(modules_sym);
417 }
418
419 bool sym_tristate_within_range(struct symbol *sym, tristate val)
420 {
421 int type = sym_get_type(sym);
422
423 if (sym->visible == no)
424 return false;
425
426 if (type != S_BOOLEAN && type != S_TRISTATE)
427 return false;
428
429 if (type == S_BOOLEAN && val == mod)
430 return false;
431 if (sym->visible <= sym->rev_dep.tri)
432 return false;
433 if (sym_is_choice_value(sym) && sym->visible == yes)
434 return val == yes;
435 return val >= sym->rev_dep.tri && val <= sym->visible;
436 }
437
438 bool sym_set_tristate_value(struct symbol *sym, tristate val)
439 {
440 tristate oldval = sym_get_tristate_value(sym);
441
442 if (oldval != val && !sym_tristate_within_range(sym, val))
443 return false;
444
445 if (sym->flags & SYMBOL_NEW) {
446 sym->flags &= ~SYMBOL_NEW;
447 sym_set_changed(sym);
448 }
449 /*
450 * setting a choice value also resets the new flag of the choice
451 * symbol and all other choice values.
452 */
453 if (sym_is_choice_value(sym) && val == yes) {
454 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
455 struct property *prop;
456 struct expr *e;
457
458 cs->user.val = sym;
459 cs->flags &= ~SYMBOL_NEW;
460 prop = sym_get_choice_prop(cs);
461 for (e = prop->expr; e; e = e->left.expr) {
462 if (e->right.sym->visible != no)
463 e->right.sym->flags &= ~SYMBOL_NEW;
464 }
465 }
466
467 sym->user.tri = val;
468 if (oldval != val) {
469 sym_clear_all_valid();
470 }
471
472 return true;
473 }
474
475 tristate sym_toggle_tristate_value(struct symbol *sym)
476 {
477 tristate oldval, newval;
478
479 oldval = newval = sym_get_tristate_value(sym);
480 do {
481 switch (newval) {
482 case no:
483 newval = mod;
484 break;
485 case mod:
486 newval = yes;
487 break;
488 case yes:
489 newval = no;
490 break;
491 }
492 if (sym_set_tristate_value(sym, newval))
493 break;
494 } while (oldval != newval);
495 return newval;
496 }
497
498 bool sym_string_valid(struct symbol *sym, const char *str)
499 {
500 signed char ch;
501
502 switch (sym->type) {
503 case S_STRING:
504 return true;
505 case S_INT:
506 ch = *str++;
507 if (ch == '-')
508 ch = *str++;
509 if (!isdigit(ch))
510 return false;
511 if (ch == '0' && *str != 0)
512 return false;
513 while ((ch = *str++)) {
514 if (!isdigit(ch))
515 return false;
516 }
517 return true;
518 case S_HEX:
519 if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))
520 str += 2;
521 ch = *str++;
522 do {
523 if (!isxdigit(ch))
524 return false;
525 } while ((ch = *str++));
526 return true;
527 case S_BOOLEAN:
528 case S_TRISTATE:
529 switch (str[0]) {
530 case 'y': case 'Y':
531 case 'm': case 'M':
532 case 'n': case 'N':
533 return true;
534 }
535 return false;
536 default:
537 return false;
538 }
539 }
540
541 bool sym_string_within_range(struct symbol *sym, const char *str)
542 {
543 struct property *prop;
544 int val;
545
546 switch (sym->type) {
547 case S_STRING:
548 return sym_string_valid(sym, str);
549 case S_INT:
550 if (!sym_string_valid(sym, str))
551 return false;
552 prop = sym_get_range_prop(sym);
553 if (!prop)
554 return true;
555 val = strtol(str, NULL, 10);
556 return val >= sym_get_range_val(prop->expr->left.sym, 10) &&
557 val <= sym_get_range_val(prop->expr->right.sym, 10);
558 case S_HEX:
559 if (!sym_string_valid(sym, str))
560 return false;
561 prop = sym_get_range_prop(sym);
562 if (!prop)
563 return true;
564 val = strtol(str, NULL, 16);
565 return val >= sym_get_range_val(prop->expr->left.sym, 16) &&
566 val <= sym_get_range_val(prop->expr->right.sym, 16);
567 case S_BOOLEAN:
568 case S_TRISTATE:
569 switch (str[0]) {
570 case 'y': case 'Y':
571 return sym_tristate_within_range(sym, yes);
572 case 'm': case 'M':
573 return sym_tristate_within_range(sym, mod);
574 case 'n': case 'N':
575 return sym_tristate_within_range(sym, no);
576 }
577 return false;
578 default:
579 return false;
580 }
581 }
582
583 bool sym_set_string_value(struct symbol *sym, const char *newval)
584 {
585 const char *oldval;
586 char *val;
587 int size;
588
589 switch (sym->type) {
590 case S_BOOLEAN:
591 case S_TRISTATE:
592 switch (newval[0]) {
593 case 'y': case 'Y':
594 return sym_set_tristate_value(sym, yes);
595 case 'm': case 'M':
596 return sym_set_tristate_value(sym, mod);
597 case 'n': case 'N':
598 return sym_set_tristate_value(sym, no);
599 }
600 return false;
601 default:
602 ;
603 }
604
605 if (!sym_string_within_range(sym, newval))
606 return false;
607
608 if (sym->flags & SYMBOL_NEW) {
609 sym->flags &= ~SYMBOL_NEW;
610 sym_set_changed(sym);
611 }
612
613 oldval = sym->user.val;
614 size = strlen(newval) + 1;
615 if (sym->type == S_HEX && (newval[0] != '0' || (newval[1] != 'x' && newval[1] != 'X'))) {
616 size += 2;
617 sym->user.val = val = malloc(size);
618 *val++ = '0';
619 *val++ = 'x';
620 } else if (!oldval || strcmp(oldval, newval))
621 sym->user.val = val = malloc(size);
622 else
623 return true;
624
625 strcpy(val, newval);
626 free((void *)oldval);
627 sym_clear_all_valid();
628
629 return true;
630 }
631
632 const char *sym_get_string_value(struct symbol *sym)
633 {
634 tristate val;
635
636 switch (sym->type) {
637 case S_BOOLEAN:
638 case S_TRISTATE:
639 val = sym_get_tristate_value(sym);
640 switch (val) {
641 case no:
642 return "n";
643 case mod:
644 return "m";
645 case yes:
646 return "y";
647 }
648 break;
649 default:
650 ;
651 }
652 return (const char *)sym->curr.val;
653 }
654
655 bool sym_is_changable(struct symbol *sym)
656 {
657 return sym->visible > sym->rev_dep.tri;
658 }
659
660 struct symbol *sym_lookup(const char *name, int isconst)
661 {
662 struct symbol *symbol;
663 const char *ptr;
664 char *new_name;
665 int hash = 0;
666
667 if (name) {
668 if (name[0] && !name[1]) {
669 switch (name[0]) {
670 case 'y': return &symbol_yes;
671 case 'm': return &symbol_mod;
672 case 'n': return &symbol_no;
673 }
674 }
675 for (ptr = name; *ptr; ptr++)
676 hash += *ptr;
677 hash &= 0xff;
678
679 for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
680 if (!strcmp(symbol->name, name)) {
681 if ((isconst && symbol->flags & SYMBOL_CONST) ||
682 (!isconst && !(symbol->flags & SYMBOL_CONST)))
683 return symbol;
684 }
685 }
686 new_name = strdup(name);
687 } else {
688 new_name = NULL;
689 hash = 256;
690 }
691
692 symbol = malloc(sizeof(*symbol));
693 memset(symbol, 0, sizeof(*symbol));
694 symbol->name = new_name;
695 symbol->type = S_UNKNOWN;
696 symbol->flags = SYMBOL_NEW;
697 if (isconst)
698 symbol->flags |= SYMBOL_CONST;
699
700 symbol->next = symbol_hash[hash];
701 symbol_hash[hash] = symbol;
702
703 return symbol;
704 }
705
706 struct symbol *sym_find(const char *name)
707 {
708 struct symbol *symbol = NULL;
709 const char *ptr;
710 int hash = 0;
711
712 if (!name)
713 return NULL;
714
715 if (name[0] && !name[1]) {
716 switch (name[0]) {
717 case 'y': return &symbol_yes;
718 case 'm': return &symbol_mod;
719 case 'n': return &symbol_no;
720 }
721 }
722 for (ptr = name; *ptr; ptr++)
723 hash += *ptr;
724 hash &= 0xff;
725
726 for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
727 if (!strcmp(symbol->name, name) &&
728 !(symbol->flags & SYMBOL_CONST))
729 break;
730 }
731
732 return symbol;
733 }
734
735 struct symbol **sym_re_search(const char *pattern)
736 {
737 struct symbol *sym, **sym_arr = NULL;
738 int i, cnt, size;
739 regex_t re;
740
741 cnt = size = 0;
742 /* Skip if empty */
743 if (strlen(pattern) == 0)
744 return NULL;
745 if (regcomp(&re, pattern, REG_EXTENDED|REG_NOSUB|REG_ICASE))
746 return NULL;
747
748 for_all_symbols(i, sym) {
749 if (sym->flags & SYMBOL_CONST || !sym->name)
750 continue;
751 if (regexec(&re, sym->name, 0, NULL, 0))
752 continue;
753 if (cnt + 1 >= size) {
754 void *tmp = sym_arr;
755 size += 16;
756 sym_arr = realloc(sym_arr, size * sizeof(struct symbol *));
757 if (!sym_arr) {
758 free(tmp);
759 return NULL;
760 }
761 }
762 sym_calc_value(sym);
763 sym_arr[cnt++] = sym;
764 }
765 if (sym_arr)
766 sym_arr[cnt] = NULL;
767 regfree(&re);
768
769 return sym_arr;
770 }
771
772
773 struct symbol *sym_check_deps(struct symbol *sym);
774
775 static struct symbol *sym_check_expr_deps(struct expr *e)
776 {
777 struct symbol *sym;
778
779 if (!e)
780 return NULL;
781 switch (e->type) {
782 case E_OR:
783 case E_AND:
784 sym = sym_check_expr_deps(e->left.expr);
785 if (sym)
786 return sym;
787 return sym_check_expr_deps(e->right.expr);
788 case E_NOT:
789 return sym_check_expr_deps(e->left.expr);
790 case E_EQUAL:
791 case E_UNEQUAL:
792 sym = sym_check_deps(e->left.sym);
793 if (sym)
794 return sym;
795 return sym_check_deps(e->right.sym);
796 case E_SYMBOL:
797 return sym_check_deps(e->left.sym);
798 default:
799 break;
800 }
801 printf("Oops! How to check %d?\n", e->type);
802 return NULL;
803 }
804
805 struct symbol *sym_check_deps(struct symbol *sym)
806 {
807 struct symbol *sym2;
808 struct property *prop;
809
810 if (sym->flags & SYMBOL_CHECK) {
811 printf("Warning! Found recursive dependency: %s", sym->name);
812 return sym;
813 }
814 if (sym->flags & SYMBOL_CHECKED)
815 return NULL;
816
817 sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);
818 sym2 = sym_check_expr_deps(sym->rev_dep.expr);
819 if (sym2)
820 goto out;
821
822 for (prop = sym->prop; prop; prop = prop->next) {
823 if (prop->type == P_CHOICE || prop->type == P_SELECT || prop->type == P_DESELECT)
824 continue;
825 sym2 = sym_check_expr_deps(prop->visible.expr);
826 if (sym2)
827 goto out;
828 if (prop->type != P_DEFAULT || sym_is_choice(sym))
829 continue;
830 sym2 = sym_check_expr_deps(prop->expr);
831 if (sym2)
832 goto out;
833 }
834 out:
835 if (sym2) {
836 printf(" %s", sym->name);
837 if (sym2 == sym) {
838 printf("\n");
839 sym2 = NULL;
840 }
841 }
842 sym->flags &= ~SYMBOL_CHECK;
843 return sym2;
844 }
845
846 struct property *prop_alloc(enum prop_type type, struct symbol *sym)
847 {
848 struct property *prop;
849 struct property **propp;
850
851 prop = malloc(sizeof(*prop));
852 memset(prop, 0, sizeof(*prop));
853 prop->type = type;
854 prop->sym = sym;
855 prop->file = current_file;
856 prop->lineno = zconf_lineno();
857
858 /* append property to the prop list of symbol */
859 if (sym) {
860 for (propp = &sym->prop; *propp; propp = &(*propp)->next)
861 ;
862 *propp = prop;
863 }
864
865 return prop;
866 }
867
868 struct symbol *prop_get_symbol(struct property *prop)
869 {
870 if (prop->expr && (prop->expr->type == E_SYMBOL ||
871 prop->expr->type == E_CHOICE))
872 return prop->expr->left.sym;
873 return NULL;
874 }
875
876 const char *prop_get_type_name(enum prop_type type)
877 {
878 switch (type) {
879 case P_PROMPT:
880 return "prompt";
881 case P_COMMENT:
882 return "comment";
883 case P_MENU:
884 return "menu";
885 case P_DEFAULT:
886 return "default";
887 case P_CHOICE:
888 return "choice";
889 case P_SELECT:
890 return "select";
891 case P_DESELECT:
892 return "deselect";
893 case P_RANGE:
894 return "range";
895 case P_UNKNOWN:
896 break;
897 }
898 return "unknown";
899 }
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