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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
4 */
5
6#include <ctype.h>
7#include <stdarg.h>
8#include <stdlib.h>
9#include <string.h>
10
11#include "lkc.h"
12
13static const char nohelp_text[] = "There is no help available for this option.";
14
15struct menu rootmenu;
16static struct menu **last_entry_ptr;
17
18struct file *file_list;
19struct file *current_file;
20
21void menu_warn(struct menu *menu, const char *fmt, ...)
22{
23 va_list ap;
24 va_start(ap, fmt);
25 fprintf(stderr, "%s:%d:warning: ", menu->file->name, menu->lineno);
26 vfprintf(stderr, fmt, ap);
27 fprintf(stderr, "\n");
28 va_end(ap);
29}
30
31static void prop_warn(struct property *prop, const char *fmt, ...)
32{
33 va_list ap;
34 va_start(ap, fmt);
35 fprintf(stderr, "%s:%d:warning: ", prop->file->name, prop->lineno);
36 vfprintf(stderr, fmt, ap);
37 fprintf(stderr, "\n");
38 va_end(ap);
39}
40
41void _menu_init(void)
42{
43 current_entry = current_menu = &rootmenu;
44 last_entry_ptr = &rootmenu.list;
45}
46
47void menu_add_entry(struct symbol *sym)
48{
49 struct menu *menu;
50
51 menu = xmalloc(sizeof(*menu));
52 memset(menu, 0, sizeof(*menu));
53 menu->sym = sym;
54 menu->parent = current_menu;
55 menu->file = current_file;
56 menu->lineno = zconf_lineno();
57
58 *last_entry_ptr = menu;
59 last_entry_ptr = &menu->next;
60 current_entry = menu;
61 if (sym)
62 menu_add_symbol(P_SYMBOL, sym, NULL);
63}
64
65struct menu *menu_add_menu(void)
66{
67 last_entry_ptr = ¤t_entry->list;
68 return current_menu = current_entry;
69}
70
71void menu_end_menu(void)
72{
73 last_entry_ptr = ¤t_menu->next;
74 current_menu = current_menu->parent;
75}
76
77/*
78 * Rewrites 'm' to 'm' && MODULES, so that it evaluates to 'n' when running
79 * without modules
80 */
81static struct expr *rewrite_m(struct expr *e)
82{
83 if (!e)
84 return e;
85
86 switch (e->type) {
87 case E_NOT:
88 e->left.expr = rewrite_m(e->left.expr);
89 break;
90 case E_OR:
91 case E_AND:
92 e->left.expr = rewrite_m(e->left.expr);
93 e->right.expr = rewrite_m(e->right.expr);
94 break;
95 case E_SYMBOL:
96 /* change 'm' into 'm' && MODULES */
97 if (e->left.sym == &symbol_mod)
98 return expr_alloc_and(e, expr_alloc_symbol(modules_sym));
99 break;
100 default:
101 break;
102 }
103 return e;
104}
105
106void menu_add_dep(struct expr *dep)
107{
108 current_entry->dep = expr_alloc_and(current_entry->dep, dep);
109}
110
111void menu_set_type(int type)
112{
113 struct symbol *sym = current_entry->sym;
114
115 if (sym->type == type)
116 return;
117 if (sym->type == S_UNKNOWN) {
118 sym->type = type;
119 return;
120 }
121 menu_warn(current_entry,
122 "ignoring type redefinition of '%s' from '%s' to '%s'",
123 sym->name ? sym->name : "<choice>",
124 sym_type_name(sym->type), sym_type_name(type));
125}
126
127static struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep)
128{
129 struct property *prop = prop_alloc(type, current_entry->sym);
130
131 prop->menu = current_entry;
132 prop->expr = expr;
133 prop->visible.expr = dep;
134
135 if (prompt) {
136 if (isspace(*prompt)) {
137 prop_warn(prop, "leading whitespace ignored");
138 while (isspace(*prompt))
139 prompt++;
140 }
141 if (current_entry->prompt && current_entry != &rootmenu)
142 prop_warn(prop, "prompt redefined");
143
144 /* Apply all upper menus' visibilities to actual prompts. */
145 if(type == P_PROMPT) {
146 struct menu *menu = current_entry;
147
148 while ((menu = menu->parent) != NULL) {
149 struct expr *dup_expr;
150
151 if (!menu->visibility)
152 continue;
153 /*
154 * Do not add a reference to the
155 * menu's visibility expression but
156 * use a copy of it. Otherwise the
157 * expression reduction functions
158 * will modify expressions that have
159 * multiple references which can
160 * cause unwanted side effects.
161 */
162 dup_expr = expr_copy(menu->visibility);
163
164 prop->visible.expr
165 = expr_alloc_and(prop->visible.expr,
166 dup_expr);
167 }
168 }
169
170 current_entry->prompt = prop;
171 }
172 prop->text = prompt;
173
174 return prop;
175}
176
177struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
178{
179 return menu_add_prop(type, prompt, NULL, dep);
180}
181
182void menu_add_visibility(struct expr *expr)
183{
184 current_entry->visibility = expr_alloc_and(current_entry->visibility,
185 expr);
186}
187
188void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
189{
190 menu_add_prop(type, NULL, expr, dep);
191}
192
193void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
194{
195 menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
196}
197
198void menu_add_option_modules(void)
199{
200 if (modules_sym)
201 zconf_error("symbol '%s' redefines option 'modules' already defined by symbol '%s'",
202 current_entry->sym->name, modules_sym->name);
203 modules_sym = current_entry->sym;
204}
205
206void menu_add_option_defconfig_list(void)
207{
208 if (!sym_defconfig_list)
209 sym_defconfig_list = current_entry->sym;
210 else if (sym_defconfig_list != current_entry->sym)
211 zconf_error("trying to redefine defconfig symbol");
212 sym_defconfig_list->flags |= SYMBOL_NO_WRITE;
213}
214
215void menu_add_option_allnoconfig_y(void)
216{
217 current_entry->sym->flags |= SYMBOL_ALLNOCONFIG_Y;
218}
219
220static int menu_validate_number(struct symbol *sym, struct symbol *sym2)
221{
222 return sym2->type == S_INT || sym2->type == S_HEX ||
223 (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
224}
225
226static void sym_check_prop(struct symbol *sym)
227{
228 struct property *prop;
229 struct symbol *sym2;
230 char *use;
231
232 for (prop = sym->prop; prop; prop = prop->next) {
233 switch (prop->type) {
234 case P_DEFAULT:
235 if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
236 prop->expr->type != E_SYMBOL)
237 prop_warn(prop,
238 "default for config symbol '%s'"
239 " must be a single symbol", sym->name);
240 if (prop->expr->type != E_SYMBOL)
241 break;
242 sym2 = prop_get_symbol(prop);
243 if (sym->type == S_HEX || sym->type == S_INT) {
244 if (!menu_validate_number(sym, sym2))
245 prop_warn(prop,
246 "'%s': number is invalid",
247 sym->name);
248 }
249 if (sym_is_choice(sym)) {
250 struct property *choice_prop =
251 sym_get_choice_prop(sym2);
252
253 if (!choice_prop ||
254 prop_get_symbol(choice_prop) != sym)
255 prop_warn(prop,
256 "choice default symbol '%s' is not contained in the choice",
257 sym2->name);
258 }
259 break;
260 case P_SELECT:
261 case P_IMPLY:
262 use = prop->type == P_SELECT ? "select" : "imply";
263 sym2 = prop_get_symbol(prop);
264 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
265 prop_warn(prop,
266 "config symbol '%s' uses %s, but is "
267 "not bool or tristate", sym->name, use);
268 else if (sym2->type != S_UNKNOWN &&
269 sym2->type != S_BOOLEAN &&
270 sym2->type != S_TRISTATE)
271 prop_warn(prop,
272 "'%s' has wrong type. '%s' only "
273 "accept arguments of bool and "
274 "tristate type", sym2->name, use);
275 break;
276 case P_RANGE:
277 if (sym->type != S_INT && sym->type != S_HEX)
278 prop_warn(prop, "range is only allowed "
279 "for int or hex symbols");
280 if (!menu_validate_number(sym, prop->expr->left.sym) ||
281 !menu_validate_number(sym, prop->expr->right.sym))
282 prop_warn(prop, "range is invalid");
283 break;
284 default:
285 ;
286 }
287 }
288}
289
290void menu_finalize(struct menu *parent)
291{
292 struct menu *menu, *last_menu;
293 struct symbol *sym;
294 struct property *prop;
295 struct expr *parentdep, *basedep, *dep, *dep2, **ep;
296
297 sym = parent->sym;
298 if (parent->list) {
299 /*
300 * This menu node has children. We (recursively) process them
301 * and propagate parent dependencies before moving on.
302 */
303
304 if (sym && sym_is_choice(sym)) {
305 if (sym->type == S_UNKNOWN) {
306 /* find the first choice value to find out choice type */
307 current_entry = parent;
308 for (menu = parent->list; menu; menu = menu->next) {
309 if (menu->sym && menu->sym->type != S_UNKNOWN) {
310 menu_set_type(menu->sym->type);
311 break;
312 }
313 }
314 }
315 /* set the type of the remaining choice values */
316 for (menu = parent->list; menu; menu = menu->next) {
317 current_entry = menu;
318 if (menu->sym && menu->sym->type == S_UNKNOWN)
319 menu_set_type(sym->type);
320 }
321
322 /*
323 * Use the choice itself as the parent dependency of
324 * the contained items. This turns the mode of the
325 * choice into an upper bound on the visibility of the
326 * choice value symbols.
327 */
328 parentdep = expr_alloc_symbol(sym);
329 } else if (parent->prompt)
330 /* Menu node for 'menu' */
331 parentdep = parent->prompt->visible.expr;
332 else
333 /* Menu node for 'if' */
334 parentdep = parent->dep;
335
336 /* For each child menu node... */
337 for (menu = parent->list; menu; menu = menu->next) {
338 /*
339 * Propagate parent dependencies to the child menu
340 * node, also rewriting and simplifying expressions
341 */
342 basedep = rewrite_m(menu->dep);
343 basedep = expr_transform(basedep);
344 basedep = expr_alloc_and(expr_copy(parentdep), basedep);
345 basedep = expr_eliminate_dups(basedep);
346 menu->dep = basedep;
347
348 if (menu->sym)
349 /*
350 * Note: For symbols, all prompts are included
351 * too in the symbol's own property list
352 */
353 prop = menu->sym->prop;
354 else
355 /*
356 * For non-symbol menu nodes, we just need to
357 * handle the prompt
358 */
359 prop = menu->prompt;
360
361 /* For each property... */
362 for (; prop; prop = prop->next) {
363 if (prop->menu != menu)
364 /*
365 * Two possibilities:
366 *
367 * 1. The property lacks dependencies
368 * and so isn't location-specific,
369 * e.g. an 'option'
370 *
371 * 2. The property belongs to a symbol
372 * defined in multiple locations and
373 * is from some other location. It
374 * will be handled there in that
375 * case.
376 *
377 * Skip the property.
378 */
379 continue;
380
381 /*
382 * Propagate parent dependencies to the
383 * property's condition, rewriting and
384 * simplifying expressions at the same time
385 */
386 dep = rewrite_m(prop->visible.expr);
387 dep = expr_transform(dep);
388 dep = expr_alloc_and(expr_copy(basedep), dep);
389 dep = expr_eliminate_dups(dep);
390 if (menu->sym && menu->sym->type != S_TRISTATE)
391 dep = expr_trans_bool(dep);
392 prop->visible.expr = dep;
393
394 /*
395 * Handle selects and implies, which modify the
396 * dependencies of the selected/implied symbol
397 */
398 if (prop->type == P_SELECT) {
399 struct symbol *es = prop_get_symbol(prop);
400 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
401 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
402 } else if (prop->type == P_IMPLY) {
403 struct symbol *es = prop_get_symbol(prop);
404 es->implied.expr = expr_alloc_or(es->implied.expr,
405 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
406 }
407 }
408 }
409
410 if (sym && sym_is_choice(sym))
411 expr_free(parentdep);
412
413 /*
414 * Recursively process children in the same fashion before
415 * moving on
416 */
417 for (menu = parent->list; menu; menu = menu->next)
418 menu_finalize(menu);
419 } else if (sym) {
420 /*
421 * Automatic submenu creation. If sym is a symbol and A, B, C,
422 * ... are consecutive items (symbols, menus, ifs, etc.) that
423 * all depend on sym, then the following menu structure is
424 * created:
425 *
426 * sym
427 * +-A
428 * +-B
429 * +-C
430 * ...
431 *
432 * This also works recursively, giving the following structure
433 * if A is a symbol and B depends on A:
434 *
435 * sym
436 * +-A
437 * | +-B
438 * +-C
439 * ...
440 */
441
442 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
443 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
444 basedep = expr_eliminate_dups(expr_transform(basedep));
445
446 /* Examine consecutive elements after sym */
447 last_menu = NULL;
448 for (menu = parent->next; menu; menu = menu->next) {
449 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
450 if (!expr_contains_symbol(dep, sym))
451 /* No dependency, quit */
452 break;
453 if (expr_depends_symbol(dep, sym))
454 /* Absolute dependency, put in submenu */
455 goto next;
456
457 /*
458 * Also consider it a dependency on sym if our
459 * dependencies contain sym and are a "superset" of
460 * sym's dependencies, e.g. '(sym || Q) && R' when sym
461 * depends on R.
462 *
463 * Note that 'R' might be from an enclosing menu or if,
464 * making this a more common case than it might seem.
465 */
466 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
467 dep = expr_eliminate_dups(expr_transform(dep));
468 dep2 = expr_copy(basedep);
469 expr_eliminate_eq(&dep, &dep2);
470 expr_free(dep);
471 if (!expr_is_yes(dep2)) {
472 /* Not superset, quit */
473 expr_free(dep2);
474 break;
475 }
476 /* Superset, put in submenu */
477 expr_free(dep2);
478 next:
479 menu_finalize(menu);
480 menu->parent = parent;
481 last_menu = menu;
482 }
483 expr_free(basedep);
484 if (last_menu) {
485 parent->list = parent->next;
486 parent->next = last_menu->next;
487 last_menu->next = NULL;
488 }
489
490 sym->dir_dep.expr = expr_alloc_or(sym->dir_dep.expr, parent->dep);
491 }
492 for (menu = parent->list; menu; menu = menu->next) {
493 if (sym && sym_is_choice(sym) &&
494 menu->sym && !sym_is_choice_value(menu->sym)) {
495 current_entry = menu;
496 menu->sym->flags |= SYMBOL_CHOICEVAL;
497 if (!menu->prompt)
498 menu_warn(menu, "choice value must have a prompt");
499 for (prop = menu->sym->prop; prop; prop = prop->next) {
500 if (prop->type == P_DEFAULT)
501 prop_warn(prop, "defaults for choice "
502 "values not supported");
503 if (prop->menu == menu)
504 continue;
505 if (prop->type == P_PROMPT &&
506 prop->menu->parent->sym != sym)
507 prop_warn(prop, "choice value used outside its choice group");
508 }
509 /* Non-tristate choice values of tristate choices must
510 * depend on the choice being set to Y. The choice
511 * values' dependencies were propagated to their
512 * properties above, so the change here must be re-
513 * propagated.
514 */
515 if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
516 basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
517 menu->dep = expr_alloc_and(basedep, menu->dep);
518 for (prop = menu->sym->prop; prop; prop = prop->next) {
519 if (prop->menu != menu)
520 continue;
521 prop->visible.expr = expr_alloc_and(expr_copy(basedep),
522 prop->visible.expr);
523 }
524 }
525 menu_add_symbol(P_CHOICE, sym, NULL);
526 prop = sym_get_choice_prop(sym);
527 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
528 ;
529 *ep = expr_alloc_one(E_LIST, NULL);
530 (*ep)->right.sym = menu->sym;
531 }
532
533 /*
534 * This code serves two purposes:
535 *
536 * (1) Flattening 'if' blocks, which do not specify a submenu
537 * and only add dependencies.
538 *
539 * (Automatic submenu creation might still create a submenu
540 * from an 'if' before this code runs.)
541 *
542 * (2) "Undoing" any automatic submenus created earlier below
543 * promptless symbols.
544 *
545 * Before:
546 *
547 * A
548 * if ... (or promptless symbol)
549 * +-B
550 * +-C
551 * D
552 *
553 * After:
554 *
555 * A
556 * if ... (or promptless symbol)
557 * B
558 * C
559 * D
560 */
561 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
562 for (last_menu = menu->list; ; last_menu = last_menu->next) {
563 last_menu->parent = parent;
564 if (!last_menu->next)
565 break;
566 }
567 last_menu->next = menu->next;
568 menu->next = menu->list;
569 menu->list = NULL;
570 }
571 }
572
573 if (sym && !(sym->flags & SYMBOL_WARNED)) {
574 if (sym->type == S_UNKNOWN)
575 menu_warn(parent, "config symbol defined without type");
576
577 if (sym_is_choice(sym) && !parent->prompt)
578 menu_warn(parent, "choice must have a prompt");
579
580 /* Check properties connected to this symbol */
581 sym_check_prop(sym);
582 sym->flags |= SYMBOL_WARNED;
583 }
584
585 /*
586 * For non-optional choices, add a reverse dependency (corresponding to
587 * a select) of '<visibility> && m'. This prevents the user from
588 * setting the choice mode to 'n' when the choice is visible.
589 *
590 * This would also work for non-choice symbols, but only non-optional
591 * choices clear SYMBOL_OPTIONAL as of writing. Choices are implemented
592 * as a type of symbol.
593 */
594 if (sym && !sym_is_optional(sym) && parent->prompt) {
595 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
596 expr_alloc_and(parent->prompt->visible.expr,
597 expr_alloc_symbol(&symbol_mod)));
598 }
599}
600
601bool menu_has_prompt(struct menu *menu)
602{
603 if (!menu->prompt)
604 return false;
605 return true;
606}
607
608/*
609 * Determine if a menu is empty.
610 * A menu is considered empty if it contains no or only
611 * invisible entries.
612 */
613bool menu_is_empty(struct menu *menu)
614{
615 struct menu *child;
616
617 for (child = menu->list; child; child = child->next) {
618 if (menu_is_visible(child))
619 return(false);
620 }
621 return(true);
622}
623
624bool menu_is_visible(struct menu *menu)
625{
626 struct menu *child;
627 struct symbol *sym;
628 tristate visible;
629
630 if (!menu->prompt)
631 return false;
632
633 if (menu->visibility) {
634 if (expr_calc_value(menu->visibility) == no)
635 return false;
636 }
637
638 sym = menu->sym;
639 if (sym) {
640 sym_calc_value(sym);
641 visible = menu->prompt->visible.tri;
642 } else
643 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
644
645 if (visible != no)
646 return true;
647
648 if (!sym || sym_get_tristate_value(menu->sym) == no)
649 return false;
650
651 for (child = menu->list; child; child = child->next) {
652 if (menu_is_visible(child)) {
653 if (sym)
654 sym->flags |= SYMBOL_DEF_USER;
655 return true;
656 }
657 }
658
659 return false;
660}
661
662const char *menu_get_prompt(struct menu *menu)
663{
664 if (menu->prompt)
665 return menu->prompt->text;
666 else if (menu->sym)
667 return menu->sym->name;
668 return NULL;
669}
670
671struct menu *menu_get_root_menu(struct menu *menu)
672{
673 return &rootmenu;
674}
675
676struct menu *menu_get_parent_menu(struct menu *menu)
677{
678 enum prop_type type;
679
680 for (; menu != &rootmenu; menu = menu->parent) {
681 type = menu->prompt ? menu->prompt->type : 0;
682 if (type == P_MENU)
683 break;
684 }
685 return menu;
686}
687
688bool menu_has_help(struct menu *menu)
689{
690 return menu->help != NULL;
691}
692
693const char *menu_get_help(struct menu *menu)
694{
695 if (menu->help)
696 return menu->help;
697 else
698 return "";
699}
700
701static void get_prompt_str(struct gstr *r, struct property *prop,
702 struct list_head *head)
703{
704 int i, j;
705 struct menu *submenu[8], *menu, *location = NULL;
706 struct jump_key *jump = NULL;
707
708 str_printf(r, "Prompt: %s\n", prop->text);
709 menu = prop->menu->parent;
710 for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
711 bool accessible = menu_is_visible(menu);
712
713 submenu[i++] = menu;
714 if (location == NULL && accessible)
715 location = menu;
716 }
717 if (head && location) {
718 jump = xmalloc(sizeof(struct jump_key));
719
720 if (menu_is_visible(prop->menu)) {
721 /*
722 * There is not enough room to put the hint at the
723 * beginning of the "Prompt" line. Put the hint on the
724 * last "Location" line even when it would belong on
725 * the former.
726 */
727 jump->target = prop->menu;
728 } else
729 jump->target = location;
730
731 if (list_empty(head))
732 jump->index = 0;
733 else
734 jump->index = list_entry(head->prev, struct jump_key,
735 entries)->index + 1;
736
737 list_add_tail(&jump->entries, head);
738 }
739
740 if (i > 0) {
741 str_printf(r, " Location:\n");
742 for (j = 4; --i >= 0; j += 2) {
743 menu = submenu[i];
744 if (jump && menu == location)
745 jump->offset = strlen(r->s);
746 str_printf(r, "%*c-> %s", j, ' ',
747 menu_get_prompt(menu));
748 if (menu->sym) {
749 str_printf(r, " (%s [=%s])", menu->sym->name ?
750 menu->sym->name : "<choice>",
751 sym_get_string_value(menu->sym));
752 }
753 str_append(r, "\n");
754 }
755 }
756}
757
758/*
759 * get property of type P_SYMBOL
760 */
761static struct property *get_symbol_prop(struct symbol *sym)
762{
763 struct property *prop = NULL;
764
765 for_all_properties(sym, prop, P_SYMBOL)
766 break;
767 return prop;
768}
769
770static void get_symbol_props_str(struct gstr *r, struct symbol *sym,
771 enum prop_type tok, const char *prefix)
772{
773 bool hit = false;
774 struct property *prop;
775
776 for_all_properties(sym, prop, tok) {
777 if (!hit) {
778 str_append(r, prefix);
779 hit = true;
780 } else
781 str_printf(r, " && ");
782 expr_gstr_print(prop->expr, r);
783 }
784 if (hit)
785 str_append(r, "\n");
786}
787
788/*
789 * head is optional and may be NULL
790 */
791static void get_symbol_str(struct gstr *r, struct symbol *sym,
792 struct list_head *head)
793{
794 struct property *prop;
795
796 if (sym && sym->name) {
797 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
798 sym_get_string_value(sym));
799 str_printf(r, "Type : %s\n", sym_type_name(sym->type));
800 if (sym->type == S_INT || sym->type == S_HEX) {
801 prop = sym_get_range_prop(sym);
802 if (prop) {
803 str_printf(r, "Range : ");
804 expr_gstr_print(prop->expr, r);
805 str_append(r, "\n");
806 }
807 }
808 }
809 for_all_prompts(sym, prop)
810 get_prompt_str(r, prop, head);
811
812 prop = get_symbol_prop(sym);
813 if (prop) {
814 str_printf(r, " Defined at %s:%d\n", prop->menu->file->name,
815 prop->menu->lineno);
816 if (!expr_is_yes(prop->visible.expr)) {
817 str_append(r, " Depends on: ");
818 expr_gstr_print(prop->visible.expr, r);
819 str_append(r, "\n");
820 }
821 }
822
823 get_symbol_props_str(r, sym, P_SELECT, " Selects: ");
824 if (sym->rev_dep.expr) {
825 expr_gstr_print_revdep(sym->rev_dep.expr, r, yes, " Selected by [y]:\n");
826 expr_gstr_print_revdep(sym->rev_dep.expr, r, mod, " Selected by [m]:\n");
827 expr_gstr_print_revdep(sym->rev_dep.expr, r, no, " Selected by [n]:\n");
828 }
829
830 get_symbol_props_str(r, sym, P_IMPLY, " Implies: ");
831 if (sym->implied.expr) {
832 expr_gstr_print_revdep(sym->implied.expr, r, yes, " Implied by [y]:\n");
833 expr_gstr_print_revdep(sym->implied.expr, r, mod, " Implied by [m]:\n");
834 expr_gstr_print_revdep(sym->implied.expr, r, no, " Implied by [n]:\n");
835 }
836
837 str_append(r, "\n\n");
838}
839
840struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head)
841{
842 struct symbol *sym;
843 struct gstr res = str_new();
844 int i;
845
846 for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
847 get_symbol_str(&res, sym, head);
848 if (!i)
849 str_append(&res, "No matches found.\n");
850 return res;
851}
852
853
854void menu_get_ext_help(struct menu *menu, struct gstr *help)
855{
856 struct symbol *sym = menu->sym;
857 const char *help_text = nohelp_text;
858
859 if (menu_has_help(menu)) {
860 if (sym->name)
861 str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
862 help_text = menu_get_help(menu);
863 }
864 str_printf(help, "%s\n", help_text);
865 if (sym)
866 get_symbol_str(help, sym, NULL);
867}
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
4 */
5
6#include <ctype.h>
7#include <stdarg.h>
8#include <stdlib.h>
9#include <string.h>
10
11#include "lkc.h"
12#include "internal.h"
13#include "list.h"
14
15static const char nohelp_text[] = "There is no help available for this option.";
16
17struct menu rootmenu;
18static struct menu **last_entry_ptr;
19
20void menu_warn(struct menu *menu, const char *fmt, ...)
21{
22 va_list ap;
23 va_start(ap, fmt);
24 fprintf(stderr, "%s:%d:warning: ", menu->filename, menu->lineno);
25 vfprintf(stderr, fmt, ap);
26 fprintf(stderr, "\n");
27 va_end(ap);
28}
29
30static void prop_warn(struct property *prop, const char *fmt, ...)
31{
32 va_list ap;
33 va_start(ap, fmt);
34 fprintf(stderr, "%s:%d:warning: ", prop->filename, prop->lineno);
35 vfprintf(stderr, fmt, ap);
36 fprintf(stderr, "\n");
37 va_end(ap);
38}
39
40void _menu_init(void)
41{
42 current_entry = current_menu = &rootmenu;
43 last_entry_ptr = &rootmenu.list;
44}
45
46void menu_add_entry(struct symbol *sym)
47{
48 struct menu *menu;
49
50 menu = xmalloc(sizeof(*menu));
51 memset(menu, 0, sizeof(*menu));
52 menu->sym = sym;
53 menu->parent = current_menu;
54 menu->filename = cur_filename;
55 menu->lineno = cur_lineno;
56
57 *last_entry_ptr = menu;
58 last_entry_ptr = &menu->next;
59 current_entry = menu;
60 if (sym) {
61 menu_add_symbol(P_SYMBOL, sym, NULL);
62 list_add_tail(&menu->link, &sym->menus);
63 }
64}
65
66struct menu *menu_add_menu(void)
67{
68 last_entry_ptr = ¤t_entry->list;
69 current_menu = current_entry;
70 return current_menu;
71}
72
73void menu_end_menu(void)
74{
75 last_entry_ptr = ¤t_menu->next;
76 current_menu = current_menu->parent;
77}
78
79/*
80 * Rewrites 'm' to 'm' && MODULES, so that it evaluates to 'n' when running
81 * without modules
82 */
83static struct expr *rewrite_m(struct expr *e)
84{
85 if (!e)
86 return e;
87
88 switch (e->type) {
89 case E_NOT:
90 e->left.expr = rewrite_m(e->left.expr);
91 break;
92 case E_OR:
93 case E_AND:
94 e->left.expr = rewrite_m(e->left.expr);
95 e->right.expr = rewrite_m(e->right.expr);
96 break;
97 case E_SYMBOL:
98 /* change 'm' into 'm' && MODULES */
99 if (e->left.sym == &symbol_mod)
100 return expr_alloc_and(e, expr_alloc_symbol(modules_sym));
101 break;
102 default:
103 break;
104 }
105 return e;
106}
107
108void menu_add_dep(struct expr *dep)
109{
110 current_entry->dep = expr_alloc_and(current_entry->dep, dep);
111}
112
113void menu_set_type(int type)
114{
115 struct symbol *sym = current_entry->sym;
116
117 if (sym->type == type)
118 return;
119 if (sym->type == S_UNKNOWN) {
120 sym->type = type;
121 return;
122 }
123 menu_warn(current_entry,
124 "ignoring type redefinition of '%s' from '%s' to '%s'",
125 sym->name ? sym->name : "<choice>",
126 sym_type_name(sym->type), sym_type_name(type));
127}
128
129static struct property *menu_add_prop(enum prop_type type, struct expr *expr,
130 struct expr *dep)
131{
132 struct property *prop;
133
134 prop = xmalloc(sizeof(*prop));
135 memset(prop, 0, sizeof(*prop));
136 prop->type = type;
137 prop->filename = cur_filename;
138 prop->lineno = cur_lineno;
139 prop->menu = current_entry;
140 prop->expr = expr;
141 prop->visible.expr = dep;
142
143 /* append property to the prop list of symbol */
144 if (current_entry->sym) {
145 struct property **propp;
146
147 for (propp = ¤t_entry->sym->prop;
148 *propp;
149 propp = &(*propp)->next)
150 ;
151 *propp = prop;
152 }
153
154 return prop;
155}
156
157struct property *menu_add_prompt(enum prop_type type, char *prompt,
158 struct expr *dep)
159{
160 struct property *prop = menu_add_prop(type, NULL, dep);
161
162 if (isspace(*prompt)) {
163 prop_warn(prop, "leading whitespace ignored");
164 while (isspace(*prompt))
165 prompt++;
166 }
167 if (current_entry->prompt)
168 prop_warn(prop, "prompt redefined");
169
170 /* Apply all upper menus' visibilities to actual prompts. */
171 if (type == P_PROMPT) {
172 struct menu *menu = current_entry;
173
174 while ((menu = menu->parent) != NULL) {
175 struct expr *dup_expr;
176
177 if (!menu->visibility)
178 continue;
179 /*
180 * Do not add a reference to the menu's visibility
181 * expression but use a copy of it. Otherwise the
182 * expression reduction functions will modify
183 * expressions that have multiple references which
184 * can cause unwanted side effects.
185 */
186 dup_expr = expr_copy(menu->visibility);
187
188 prop->visible.expr = expr_alloc_and(prop->visible.expr,
189 dup_expr);
190 }
191 }
192
193 current_entry->prompt = prop;
194 prop->text = prompt;
195
196 return prop;
197}
198
199void menu_add_visibility(struct expr *expr)
200{
201 current_entry->visibility = expr_alloc_and(current_entry->visibility,
202 expr);
203}
204
205void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
206{
207 menu_add_prop(type, expr, dep);
208}
209
210void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
211{
212 menu_add_prop(type, expr_alloc_symbol(sym), dep);
213}
214
215static int menu_validate_number(struct symbol *sym, struct symbol *sym2)
216{
217 return sym2->type == S_INT || sym2->type == S_HEX ||
218 (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
219}
220
221static void sym_check_prop(struct symbol *sym)
222{
223 struct property *prop;
224 struct symbol *sym2;
225 char *use;
226
227 for (prop = sym->prop; prop; prop = prop->next) {
228 switch (prop->type) {
229 case P_DEFAULT:
230 if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
231 prop->expr->type != E_SYMBOL)
232 prop_warn(prop,
233 "default for config symbol '%s'"
234 " must be a single symbol", sym->name);
235 if (prop->expr->type != E_SYMBOL)
236 break;
237 sym2 = prop_get_symbol(prop);
238 if (sym->type == S_HEX || sym->type == S_INT) {
239 if (!menu_validate_number(sym, sym2))
240 prop_warn(prop,
241 "'%s': number is invalid",
242 sym->name);
243 }
244 if (sym_is_choice(sym)) {
245 struct property *choice_prop =
246 sym_get_choice_prop(sym2);
247
248 if (!choice_prop ||
249 prop_get_symbol(choice_prop) != sym)
250 prop_warn(prop,
251 "choice default symbol '%s' is not contained in the choice",
252 sym2->name);
253 }
254 break;
255 case P_SELECT:
256 case P_IMPLY:
257 use = prop->type == P_SELECT ? "select" : "imply";
258 sym2 = prop_get_symbol(prop);
259 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
260 prop_warn(prop,
261 "config symbol '%s' uses %s, but is "
262 "not bool or tristate", sym->name, use);
263 else if (sym2->type != S_UNKNOWN &&
264 sym2->type != S_BOOLEAN &&
265 sym2->type != S_TRISTATE)
266 prop_warn(prop,
267 "'%s' has wrong type. '%s' only "
268 "accept arguments of bool and "
269 "tristate type", sym2->name, use);
270 break;
271 case P_RANGE:
272 if (sym->type != S_INT && sym->type != S_HEX)
273 prop_warn(prop, "range is only allowed "
274 "for int or hex symbols");
275 if (!menu_validate_number(sym, prop->expr->left.sym) ||
276 !menu_validate_number(sym, prop->expr->right.sym))
277 prop_warn(prop, "range is invalid");
278 break;
279 default:
280 ;
281 }
282 }
283}
284
285static void _menu_finalize(struct menu *parent, bool inside_choice)
286{
287 struct menu *menu, *last_menu;
288 struct symbol *sym;
289 struct property *prop;
290 struct expr *parentdep, *basedep, *dep, *dep2, **ep;
291
292 sym = parent->sym;
293 if (parent->list) {
294 /*
295 * This menu node has children. We (recursively) process them
296 * and propagate parent dependencies before moving on.
297 */
298
299 bool is_choice = false;
300
301 if (sym && sym_is_choice(sym))
302 is_choice = true;
303
304 if (is_choice) {
305 if (sym->type == S_UNKNOWN) {
306 /* find the first choice value to find out choice type */
307 current_entry = parent;
308 for (menu = parent->list; menu; menu = menu->next) {
309 if (menu->sym && menu->sym->type != S_UNKNOWN) {
310 menu_set_type(menu->sym->type);
311 break;
312 }
313 }
314 }
315
316 /*
317 * Use the choice itself as the parent dependency of
318 * the contained items. This turns the mode of the
319 * choice into an upper bound on the visibility of the
320 * choice value symbols.
321 */
322 parentdep = expr_alloc_symbol(sym);
323 } else {
324 /* Menu node for 'menu', 'if' */
325 parentdep = parent->dep;
326 }
327
328 /* For each child menu node... */
329 for (menu = parent->list; menu; menu = menu->next) {
330 /*
331 * Propagate parent dependencies to the child menu
332 * node, also rewriting and simplifying expressions
333 */
334 basedep = rewrite_m(menu->dep);
335 basedep = expr_transform(basedep);
336 basedep = expr_alloc_and(expr_copy(parentdep), basedep);
337 basedep = expr_eliminate_dups(basedep);
338 menu->dep = basedep;
339
340 if (menu->sym)
341 /*
342 * Note: For symbols, all prompts are included
343 * too in the symbol's own property list
344 */
345 prop = menu->sym->prop;
346 else
347 /*
348 * For non-symbol menu nodes, we just need to
349 * handle the prompt
350 */
351 prop = menu->prompt;
352
353 /* For each property... */
354 for (; prop; prop = prop->next) {
355 if (prop->menu != menu)
356 /*
357 * Two possibilities:
358 *
359 * 1. The property lacks dependencies
360 * and so isn't location-specific,
361 * e.g. an 'option'
362 *
363 * 2. The property belongs to a symbol
364 * defined in multiple locations and
365 * is from some other location. It
366 * will be handled there in that
367 * case.
368 *
369 * Skip the property.
370 */
371 continue;
372
373 /*
374 * Propagate parent dependencies to the
375 * property's condition, rewriting and
376 * simplifying expressions at the same time
377 */
378 dep = rewrite_m(prop->visible.expr);
379 dep = expr_transform(dep);
380 dep = expr_alloc_and(expr_copy(basedep), dep);
381 dep = expr_eliminate_dups(dep);
382 if (menu->sym && menu->sym->type != S_TRISTATE)
383 dep = expr_trans_bool(dep);
384 prop->visible.expr = dep;
385
386 /*
387 * Handle selects and implies, which modify the
388 * dependencies of the selected/implied symbol
389 */
390 if (prop->type == P_SELECT) {
391 struct symbol *es = prop_get_symbol(prop);
392 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
393 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
394 } else if (prop->type == P_IMPLY) {
395 struct symbol *es = prop_get_symbol(prop);
396 es->implied.expr = expr_alloc_or(es->implied.expr,
397 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
398 }
399 }
400 }
401
402 if (is_choice)
403 expr_free(parentdep);
404
405 /*
406 * Recursively process children in the same fashion before
407 * moving on
408 */
409 for (menu = parent->list; menu; menu = menu->next)
410 _menu_finalize(menu, is_choice);
411 } else if (!inside_choice && sym) {
412 /*
413 * Automatic submenu creation. If sym is a symbol and A, B, C,
414 * ... are consecutive items (symbols, menus, ifs, etc.) that
415 * all depend on sym, then the following menu structure is
416 * created:
417 *
418 * sym
419 * +-A
420 * +-B
421 * +-C
422 * ...
423 *
424 * This also works recursively, giving the following structure
425 * if A is a symbol and B depends on A:
426 *
427 * sym
428 * +-A
429 * | +-B
430 * +-C
431 * ...
432 */
433
434 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
435 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
436 basedep = expr_eliminate_dups(expr_transform(basedep));
437
438 /* Examine consecutive elements after sym */
439 last_menu = NULL;
440 for (menu = parent->next; menu; menu = menu->next) {
441 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
442 if (!expr_contains_symbol(dep, sym))
443 /* No dependency, quit */
444 break;
445 if (expr_depends_symbol(dep, sym))
446 /* Absolute dependency, put in submenu */
447 goto next;
448
449 /*
450 * Also consider it a dependency on sym if our
451 * dependencies contain sym and are a "superset" of
452 * sym's dependencies, e.g. '(sym || Q) && R' when sym
453 * depends on R.
454 *
455 * Note that 'R' might be from an enclosing menu or if,
456 * making this a more common case than it might seem.
457 */
458 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
459 dep = expr_eliminate_dups(expr_transform(dep));
460 dep2 = expr_copy(basedep);
461 expr_eliminate_eq(&dep, &dep2);
462 expr_free(dep);
463 if (!expr_is_yes(dep2)) {
464 /* Not superset, quit */
465 expr_free(dep2);
466 break;
467 }
468 /* Superset, put in submenu */
469 expr_free(dep2);
470 next:
471 _menu_finalize(menu, false);
472 menu->parent = parent;
473 last_menu = menu;
474 }
475 expr_free(basedep);
476 if (last_menu) {
477 parent->list = parent->next;
478 parent->next = last_menu->next;
479 last_menu->next = NULL;
480 }
481
482 sym->dir_dep.expr = expr_alloc_or(sym->dir_dep.expr, parent->dep);
483 }
484 for (menu = parent->list; menu; menu = menu->next) {
485 if (sym && sym_is_choice(sym) &&
486 menu->sym && !sym_is_choice_value(menu->sym)) {
487 current_entry = menu;
488 menu->sym->flags |= SYMBOL_CHOICEVAL;
489 if (!menu->prompt)
490 menu_warn(menu, "choice value must have a prompt");
491 for (prop = menu->sym->prop; prop; prop = prop->next) {
492 if (prop->type == P_DEFAULT)
493 prop_warn(prop, "defaults for choice "
494 "values not supported");
495 if (prop->menu == menu)
496 continue;
497 if (prop->type == P_PROMPT &&
498 prop->menu->parent->sym != sym)
499 prop_warn(prop, "choice value used outside its choice group");
500 }
501 /* Non-tristate choice values of tristate choices must
502 * depend on the choice being set to Y. The choice
503 * values' dependencies were propagated to their
504 * properties above, so the change here must be re-
505 * propagated.
506 */
507 if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
508 basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
509 menu->dep = expr_alloc_and(basedep, menu->dep);
510 for (prop = menu->sym->prop; prop; prop = prop->next) {
511 if (prop->menu != menu)
512 continue;
513 prop->visible.expr = expr_alloc_and(expr_copy(basedep),
514 prop->visible.expr);
515 }
516 }
517 menu_add_symbol(P_CHOICE, sym, NULL);
518 prop = sym_get_choice_prop(sym);
519 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
520 ;
521 *ep = expr_alloc_one(E_LIST, NULL);
522 (*ep)->right.sym = menu->sym;
523 }
524
525 /*
526 * This code serves two purposes:
527 *
528 * (1) Flattening 'if' blocks, which do not specify a submenu
529 * and only add dependencies.
530 *
531 * (Automatic submenu creation might still create a submenu
532 * from an 'if' before this code runs.)
533 *
534 * (2) "Undoing" any automatic submenus created earlier below
535 * promptless symbols.
536 *
537 * Before:
538 *
539 * A
540 * if ... (or promptless symbol)
541 * +-B
542 * +-C
543 * D
544 *
545 * After:
546 *
547 * A
548 * if ... (or promptless symbol)
549 * B
550 * C
551 * D
552 */
553 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
554 for (last_menu = menu->list; ; last_menu = last_menu->next) {
555 last_menu->parent = parent;
556 if (!last_menu->next)
557 break;
558 }
559 last_menu->next = menu->next;
560 menu->next = menu->list;
561 menu->list = NULL;
562 }
563 }
564
565 if (sym && !(sym->flags & SYMBOL_WARNED)) {
566 if (sym->type == S_UNKNOWN)
567 menu_warn(parent, "config symbol defined without type");
568
569 /* Check properties connected to this symbol */
570 sym_check_prop(sym);
571 sym->flags |= SYMBOL_WARNED;
572 }
573
574 /*
575 * For non-optional choices, add a reverse dependency (corresponding to
576 * a select) of '<visibility> && m'. This prevents the user from
577 * setting the choice mode to 'n' when the choice is visible.
578 *
579 * This would also work for non-choice symbols, but only non-optional
580 * choices clear SYMBOL_OPTIONAL as of writing. Choices are implemented
581 * as a type of symbol.
582 */
583 if (sym && !sym_is_optional(sym) && parent->prompt) {
584 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
585 expr_alloc_and(parent->prompt->visible.expr,
586 expr_alloc_symbol(&symbol_mod)));
587 }
588}
589
590void menu_finalize(void)
591{
592 _menu_finalize(&rootmenu, false);
593}
594
595bool menu_has_prompt(struct menu *menu)
596{
597 if (!menu->prompt)
598 return false;
599 return true;
600}
601
602/*
603 * Determine if a menu is empty.
604 * A menu is considered empty if it contains no or only
605 * invisible entries.
606 */
607bool menu_is_empty(struct menu *menu)
608{
609 struct menu *child;
610
611 for (child = menu->list; child; child = child->next) {
612 if (menu_is_visible(child))
613 return(false);
614 }
615 return(true);
616}
617
618bool menu_is_visible(struct menu *menu)
619{
620 struct menu *child;
621 struct symbol *sym;
622 tristate visible;
623
624 if (!menu->prompt)
625 return false;
626
627 if (menu->visibility) {
628 if (expr_calc_value(menu->visibility) == no)
629 return false;
630 }
631
632 sym = menu->sym;
633 if (sym) {
634 sym_calc_value(sym);
635 visible = menu->prompt->visible.tri;
636 } else
637 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
638
639 if (visible != no)
640 return true;
641
642 if (!sym || sym_get_tristate_value(menu->sym) == no)
643 return false;
644
645 for (child = menu->list; child; child = child->next) {
646 if (menu_is_visible(child)) {
647 if (sym)
648 sym->flags |= SYMBOL_DEF_USER;
649 return true;
650 }
651 }
652
653 return false;
654}
655
656const char *menu_get_prompt(struct menu *menu)
657{
658 if (menu->prompt)
659 return menu->prompt->text;
660 else if (menu->sym)
661 return menu->sym->name;
662 return NULL;
663}
664
665struct menu *menu_get_parent_menu(struct menu *menu)
666{
667 enum prop_type type;
668
669 for (; menu != &rootmenu; menu = menu->parent) {
670 type = menu->prompt ? menu->prompt->type : 0;
671 if (type == P_MENU)
672 break;
673 }
674 return menu;
675}
676
677static void get_def_str(struct gstr *r, struct menu *menu)
678{
679 str_printf(r, "Defined at %s:%d\n",
680 menu->filename, menu->lineno);
681}
682
683static void get_dep_str(struct gstr *r, struct expr *expr, const char *prefix)
684{
685 if (!expr_is_yes(expr)) {
686 str_append(r, prefix);
687 expr_gstr_print(expr, r);
688 str_append(r, "\n");
689 }
690}
691
692int __attribute__((weak)) get_jump_key_char(void)
693{
694 return -1;
695}
696
697static void get_prompt_str(struct gstr *r, struct property *prop,
698 struct list_head *head)
699{
700 int i, j;
701 struct menu *submenu[8], *menu, *location = NULL;
702 struct jump_key *jump = NULL;
703
704 str_printf(r, " Prompt: %s\n", prop->text);
705
706 get_dep_str(r, prop->menu->dep, " Depends on: ");
707 /*
708 * Most prompts in Linux have visibility that exactly matches their
709 * dependencies. For these, we print only the dependencies to improve
710 * readability. However, prompts with inline "if" expressions and
711 * prompts with a parent that has a "visible if" expression have
712 * differing dependencies and visibility. In these rare cases, we
713 * print both.
714 */
715 if (!expr_eq(prop->menu->dep, prop->visible.expr))
716 get_dep_str(r, prop->visible.expr, " Visible if: ");
717
718 menu = prop->menu;
719 for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
720 submenu[i++] = menu;
721 if (location == NULL && menu_is_visible(menu))
722 location = menu;
723 }
724 if (head && location) {
725 jump = xmalloc(sizeof(struct jump_key));
726 jump->target = location;
727 list_add_tail(&jump->entries, head);
728 }
729
730 str_printf(r, " Location:\n");
731 for (j = 0; --i >= 0; j++) {
732 int jk = -1;
733 int indent = 2 * j + 4;
734
735 menu = submenu[i];
736 if (jump && menu == location) {
737 jump->offset = strlen(r->s);
738 jk = get_jump_key_char();
739 }
740
741 if (jk >= 0) {
742 str_printf(r, "(%c)", jk);
743 indent -= 3;
744 }
745
746 str_printf(r, "%*c-> %s", indent, ' ', menu_get_prompt(menu));
747 if (menu->sym) {
748 str_printf(r, " (%s [=%s])", menu->sym->name ?
749 menu->sym->name : "<choice>",
750 sym_get_string_value(menu->sym));
751 }
752 str_append(r, "\n");
753 }
754}
755
756static void get_symbol_props_str(struct gstr *r, struct symbol *sym,
757 enum prop_type tok, const char *prefix)
758{
759 bool hit = false;
760 struct property *prop;
761
762 for_all_properties(sym, prop, tok) {
763 if (!hit) {
764 str_append(r, prefix);
765 hit = true;
766 } else
767 str_printf(r, " && ");
768 expr_gstr_print(prop->expr, r);
769 }
770 if (hit)
771 str_append(r, "\n");
772}
773
774/*
775 * head is optional and may be NULL
776 */
777static void get_symbol_str(struct gstr *r, struct symbol *sym,
778 struct list_head *head)
779{
780 struct property *prop;
781 struct menu *menu;
782
783 if (sym && sym->name) {
784 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
785 sym_get_string_value(sym));
786 str_printf(r, "Type : %s\n", sym_type_name(sym->type));
787 if (sym->type == S_INT || sym->type == S_HEX) {
788 prop = sym_get_range_prop(sym);
789 if (prop) {
790 str_printf(r, "Range : ");
791 expr_gstr_print(prop->expr, r);
792 str_append(r, "\n");
793 }
794 }
795 }
796
797 /* Print the definitions with prompts before the ones without */
798 list_for_each_entry(menu, &sym->menus, link) {
799 if (menu->prompt) {
800 get_def_str(r, menu);
801 get_prompt_str(r, menu->prompt, head);
802 }
803 }
804
805 list_for_each_entry(menu, &sym->menus, link) {
806 if (!menu->prompt) {
807 get_def_str(r, menu);
808 get_dep_str(r, menu->dep, " Depends on: ");
809 }
810 }
811
812 get_symbol_props_str(r, sym, P_SELECT, "Selects: ");
813 if (sym->rev_dep.expr) {
814 expr_gstr_print_revdep(sym->rev_dep.expr, r, yes, "Selected by [y]:\n");
815 expr_gstr_print_revdep(sym->rev_dep.expr, r, mod, "Selected by [m]:\n");
816 expr_gstr_print_revdep(sym->rev_dep.expr, r, no, "Selected by [n]:\n");
817 }
818
819 get_symbol_props_str(r, sym, P_IMPLY, "Implies: ");
820 if (sym->implied.expr) {
821 expr_gstr_print_revdep(sym->implied.expr, r, yes, "Implied by [y]:\n");
822 expr_gstr_print_revdep(sym->implied.expr, r, mod, "Implied by [m]:\n");
823 expr_gstr_print_revdep(sym->implied.expr, r, no, "Implied by [n]:\n");
824 }
825
826 str_append(r, "\n\n");
827}
828
829struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head)
830{
831 struct symbol *sym;
832 struct gstr res = str_new();
833 int i;
834
835 for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
836 get_symbol_str(&res, sym, head);
837 if (!i)
838 str_append(&res, "No matches found.\n");
839 return res;
840}
841
842
843void menu_get_ext_help(struct menu *menu, struct gstr *help)
844{
845 struct symbol *sym = menu->sym;
846 const char *help_text = nohelp_text;
847
848 if (menu->help) {
849 if (sym->name)
850 str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
851 help_text = menu->help;
852 }
853 str_printf(help, "%s\n", help_text);
854 if (sym)
855 get_symbol_str(help, sym, NULL);
856}