Loading...
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}
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}