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