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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
4 */
5
Arnaud Lacombedd003302011-06-01 16:06:22 -04006#include <ctype.h>
Arnaud Lacombe10a4b272011-06-01 16:00:46 -04007#include <stdarg.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07008#include <stdlib.h>
9#include <string.h>
10
Linus Torvalds1da177e2005-04-16 15:20:36 -070011#include "lkc.h"
12
Arnaud Lacombe57e62922011-08-03 21:52:07 -040013static const char nohelp_text[] = "There is no help available for this option.";
Cheng Renquan6bd59992009-07-12 16:11:44 +080014
Linus Torvalds1da177e2005-04-16 15:20:36 -070015struct menu rootmenu;
16static struct menu **last_entry_ptr;
17
18struct file *file_list;
19struct file *current_file;
20
Roman Zippel93449082008-01-14 04:50:54 +010021void menu_warn(struct menu *menu, const char *fmt, ...)
Linus Torvalds1da177e2005-04-16 15:20:36 -070022{
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
nir.tzachar@gmail.com692d97c2009-11-25 12:28:43 +020041void _menu_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -070042{
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
Alan Cox177acf72012-11-06 14:32:08 +000051 menu = xmalloc(sizeof(*menu));
Linus Torvalds1da177e2005-04-16 15:20:36 -070052 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;
Sam Ravnborg59e89e32010-07-31 23:35:29 +020061 if (sym)
62 menu_add_symbol(P_SYMBOL, sym, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -070063}
64
65void menu_end_entry(void)
66{
67}
68
Roman Zippela02f0572005-11-08 21:34:53 -080069struct menu *menu_add_menu(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -070070{
Roman Zippela02f0572005-11-08 21:34:53 -080071 menu_end_entry();
Linus Torvalds1da177e2005-04-16 15:20:36 -070072 last_entry_ptr = &current_entry->list;
Roman Zippela02f0572005-11-08 21:34:53 -080073 return current_menu = current_entry;
Linus Torvalds1da177e2005-04-16 15:20:36 -070074}
75
76void menu_end_menu(void)
77{
78 last_entry_ptr = &current_menu->next;
79 current_menu = current_menu->parent;
80}
81
Ulf Magnusson9a826842017-10-05 14:01:13 +020082/*
83 * Rewrites 'm' to 'm' && MODULES, so that it evaluates to 'n' when running
84 * without modules
85 */
86static struct expr *rewrite_m(struct expr *e)
Linus Torvalds1da177e2005-04-16 15:20:36 -070087{
88 if (!e)
89 return e;
90
91 switch (e->type) {
92 case E_NOT:
Ulf Magnusson9a826842017-10-05 14:01:13 +020093 e->left.expr = rewrite_m(e->left.expr);
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 break;
95 case E_OR:
96 case E_AND:
Ulf Magnusson9a826842017-10-05 14:01:13 +020097 e->left.expr = rewrite_m(e->left.expr);
98 e->right.expr = rewrite_m(e->right.expr);
Linus Torvalds1da177e2005-04-16 15:20:36 -070099 break;
100 case E_SYMBOL:
101 /* change 'm' into 'm' && MODULES */
102 if (e->left.sym == &symbol_mod)
103 return expr_alloc_and(e, expr_alloc_symbol(modules_sym));
104 break;
105 default:
106 break;
107 }
108 return e;
109}
110
111void menu_add_dep(struct expr *dep)
112{
Ulf Magnussonf77850d2017-10-05 14:01:15 +0200113 current_entry->dep = expr_alloc_and(current_entry->dep, dep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114}
115
116void menu_set_type(int type)
117{
118 struct symbol *sym = current_entry->sym;
119
120 if (sym->type == type)
121 return;
122 if (sym->type == S_UNKNOWN) {
123 sym->type = type;
124 return;
125 }
Martin Walch57540f1d2013-10-03 18:32:02 +0200126 menu_warn(current_entry,
127 "ignoring type redefinition of '%s' from '%s' to '%s'",
128 sym->name ? sym->name : "<choice>",
129 sym_type_name(sym->type), sym_type_name(type));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130}
131
Michal Marekad8d40c2015-02-24 16:37:13 +0100132static struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133{
134 struct property *prop = prop_alloc(type, current_entry->sym);
135
136 prop->menu = current_entry;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137 prop->expr = expr;
Ulf Magnussonf77850d2017-10-05 14:01:15 +0200138 prop->visible.expr = dep;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139
140 if (prompt) {
Roman Zippelf001f7f2006-06-08 22:12:48 -0700141 if (isspace(*prompt)) {
142 prop_warn(prop, "leading whitespace ignored");
143 while (isspace(*prompt))
144 prompt++;
145 }
Arnaud Lacombeba6ff602010-09-04 16:05:15 -0400146 if (current_entry->prompt && current_entry != &rootmenu)
Roman Zippelf001f7f2006-06-08 22:12:48 -0700147 prop_warn(prop, "prompt redefined");
Jan Beulich7ad12272010-12-09 08:11:38 +0000148
149 /* Apply all upper menus' visibilities to actual prompts. */
150 if(type == P_PROMPT) {
151 struct menu *menu = current_entry;
152
153 while ((menu = menu->parent) != NULL) {
Dirk Gouderse983b7b2013-05-21 10:54:11 +0200154 struct expr *dup_expr;
155
Jan Beulich7ad12272010-12-09 08:11:38 +0000156 if (!menu->visibility)
157 continue;
Dirk Gouderse983b7b2013-05-21 10:54:11 +0200158 /*
159 * Do not add a reference to the
160 * menu's visibility expression but
161 * use a copy of it. Otherwise the
162 * expression reduction functions
163 * will modify expressions that have
164 * multiple references which can
165 * cause unwanted side effects.
166 */
167 dup_expr = expr_copy(menu->visibility);
168
Jan Beulich7ad12272010-12-09 08:11:38 +0000169 prop->visible.expr
170 = expr_alloc_and(prop->visible.expr,
Dirk Gouderse983b7b2013-05-21 10:54:11 +0200171 dup_expr);
Jan Beulich7ad12272010-12-09 08:11:38 +0000172 }
173 }
174
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175 current_entry->prompt = prop;
176 }
Roman Zippelf001f7f2006-06-08 22:12:48 -0700177 prop->text = prompt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178
179 return prop;
180}
181
blaisorblade@yahoo.itfb7f6ff2005-07-28 17:56:25 +0200182struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183{
blaisorblade@yahoo.itfb7f6ff2005-07-28 17:56:25 +0200184 return menu_add_prop(type, prompt, NULL, dep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185}
186
Arnaud Lacombe86e187f2010-11-06 18:30:23 -0300187void menu_add_visibility(struct expr *expr)
188{
189 current_entry->visibility = expr_alloc_and(current_entry->visibility,
190 expr);
191}
192
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
194{
195 menu_add_prop(type, NULL, expr, dep);
196}
197
198void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
199{
200 menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
201}
202
Roman Zippelf6a88aa2006-06-08 22:12:44 -0700203void menu_add_option(int token, char *arg)
204{
Roman Zippelface4372006-06-08 22:12:45 -0700205 switch (token) {
206 case T_OPT_MODULES:
Yann E. MORINe0627812013-09-03 22:22:26 +0200207 if (modules_sym)
208 zconf_error("symbol '%s' redefines option 'modules'"
209 " already defined by symbol '%s'",
210 current_entry->sym->name,
211 modules_sym->name
212 );
Yann E. MORIN6902dcc2013-09-03 17:07:18 +0200213 modules_sym = current_entry->sym;
Roman Zippelface4372006-06-08 22:12:45 -0700214 break;
215 case T_OPT_DEFCONFIG_LIST:
216 if (!sym_defconfig_list)
217 sym_defconfig_list = current_entry->sym;
218 else if (sym_defconfig_list != current_entry->sym)
219 zconf_error("trying to redefine defconfig symbol");
220 break;
Roman Zippel93449082008-01-14 04:50:54 +0100221 case T_OPT_ENV:
222 prop_add_env(arg);
223 break;
Josh Triplett5d2acfc2014-04-07 15:39:09 -0700224 case T_OPT_ALLNOCONFIG_Y:
225 current_entry->sym->flags |= SYMBOL_ALLNOCONFIG_Y;
226 break;
Roman Zippelface4372006-06-08 22:12:45 -0700227 }
Roman Zippelf6a88aa2006-06-08 22:12:44 -0700228}
229
Arnaud Lacombeab60bd02010-12-05 01:29:25 -0500230static int menu_validate_number(struct symbol *sym, struct symbol *sym2)
Roman Zippel4cf3cbe2005-11-08 21:34:49 -0800231{
232 return sym2->type == S_INT || sym2->type == S_HEX ||
233 (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
234}
235
Trevor Keith4356f482009-09-18 12:49:23 -0700236static void sym_check_prop(struct symbol *sym)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237{
238 struct property *prop;
239 struct symbol *sym2;
Nicolas Pitre237e3ad2016-11-11 00:10:05 -0500240 char *use;
241
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242 for (prop = sym->prop; prop; prop = prop->next) {
243 switch (prop->type) {
244 case P_DEFAULT:
245 if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
246 prop->expr->type != E_SYMBOL)
247 prop_warn(prop,
Li Zefan4280eae2010-04-14 11:44:05 +0800248 "default for config symbol '%s'"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 " must be a single symbol", sym->name);
Arnaud Lacombeab60bd02010-12-05 01:29:25 -0500250 if (prop->expr->type != E_SYMBOL)
251 break;
252 sym2 = prop_get_symbol(prop);
253 if (sym->type == S_HEX || sym->type == S_INT) {
254 if (!menu_validate_number(sym, sym2))
255 prop_warn(prop,
256 "'%s': number is invalid",
257 sym->name);
258 }
Ulf Magnusson2c37e082017-10-04 01:25:46 +0200259 if (sym_is_choice(sym)) {
260 struct property *choice_prop =
261 sym_get_choice_prop(sym2);
262
263 if (!choice_prop ||
264 prop_get_symbol(choice_prop) != sym)
265 prop_warn(prop,
266 "choice default symbol '%s' is not contained in the choice",
267 sym2->name);
268 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 break;
270 case P_SELECT:
Nicolas Pitre237e3ad2016-11-11 00:10:05 -0500271 case P_IMPLY:
272 use = prop->type == P_SELECT ? "select" : "imply";
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 sym2 = prop_get_symbol(prop);
274 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
275 prop_warn(prop,
Nicolas Pitre237e3ad2016-11-11 00:10:05 -0500276 "config symbol '%s' uses %s, but is "
277 "not boolean or tristate", sym->name, use);
Sam Ravnborg603d4982008-02-02 21:09:57 +0100278 else if (sym2->type != S_UNKNOWN &&
Masahiro Yamadabb66fc62014-06-10 19:08:13 +0900279 sym2->type != S_BOOLEAN &&
280 sym2->type != S_TRISTATE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281 prop_warn(prop,
Nicolas Pitre237e3ad2016-11-11 00:10:05 -0500282 "'%s' has wrong type. '%s' only "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283 "accept arguments of boolean and "
Nicolas Pitre237e3ad2016-11-11 00:10:05 -0500284 "tristate type", sym2->name, use);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285 break;
286 case P_RANGE:
287 if (sym->type != S_INT && sym->type != S_HEX)
288 prop_warn(prop, "range is only allowed "
Masahiro Yamadabb66fc62014-06-10 19:08:13 +0900289 "for int or hex symbols");
Arnaud Lacombeab60bd02010-12-05 01:29:25 -0500290 if (!menu_validate_number(sym, prop->expr->left.sym) ||
291 !menu_validate_number(sym, prop->expr->right.sym))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292 prop_warn(prop, "range is invalid");
293 break;
294 default:
295 ;
296 }
297 }
298}
299
300void menu_finalize(struct menu *parent)
301{
302 struct menu *menu, *last_menu;
303 struct symbol *sym;
304 struct property *prop;
305 struct expr *parentdep, *basedep, *dep, *dep2, **ep;
306
307 sym = parent->sym;
308 if (parent->list) {
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200309 /*
310 * This menu node has children. We (recursively) process them
311 * and propagate parent dependencies before moving on.
312 */
313
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314 if (sym && sym_is_choice(sym)) {
Roman Zippel5a1aa8a2008-02-29 05:11:50 +0100315 if (sym->type == S_UNKNOWN) {
316 /* find the first choice value to find out choice type */
317 current_entry = parent;
318 for (menu = parent->list; menu; menu = menu->next) {
319 if (menu->sym && menu->sym->type != S_UNKNOWN) {
Jan Beulichf5eaa322008-01-24 11:54:23 +0000320 menu_set_type(menu->sym->type);
Roman Zippel5a1aa8a2008-02-29 05:11:50 +0100321 break;
322 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 }
324 }
Roman Zippel5a1aa8a2008-02-29 05:11:50 +0100325 /* set the type of the remaining choice values */
326 for (menu = parent->list; menu; menu = menu->next) {
327 current_entry = menu;
328 if (menu->sym && menu->sym->type == S_UNKNOWN)
329 menu_set_type(sym->type);
330 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331 parentdep = expr_alloc_symbol(sym);
332 } else if (parent->prompt)
333 parentdep = parent->prompt->visible.expr;
334 else
335 parentdep = parent->dep;
336
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200337 /* For each child menu node... */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338 for (menu = parent->list; menu; menu = menu->next) {
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200339 /*
340 * Propagate parent dependencies to the child menu
341 * node, also rewriting and simplifying expressions
342 */
Ulf Magnussonf77850d2017-10-05 14:01:15 +0200343 basedep = rewrite_m(menu->dep);
344 basedep = expr_transform(basedep);
Linus Torvaldse8b8c972007-10-19 21:25:45 -0700345 basedep = expr_alloc_and(expr_copy(parentdep), basedep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346 basedep = expr_eliminate_dups(basedep);
347 menu->dep = basedep;
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200348
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349 if (menu->sym)
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200350 /*
351 * Note: For symbols, all prompts are included
352 * too in the symbol's own property list
353 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354 prop = menu->sym->prop;
355 else
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200356 /*
357 * For non-symbol menu nodes, we just need to
358 * handle the prompt
359 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 prop = menu->prompt;
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200361
362 /* For each property... */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 for (; prop; prop = prop->next) {
364 if (prop->menu != menu)
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200365 /*
366 * Two possibilities:
367 *
368 * 1. The property lacks dependencies
369 * and so isn't location-specific,
370 * e.g. an 'option'
371 *
372 * 2. The property belongs to a symbol
373 * defined in multiple locations and
374 * is from some other location. It
375 * will be handled there in that
376 * case.
377 *
378 * Skip the property.
379 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380 continue;
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200381
382 /*
383 * Propagate parent dependencies to the
384 * property's condition, rewriting and
385 * simplifying expressions at the same time
386 */
Ulf Magnussonf77850d2017-10-05 14:01:15 +0200387 dep = rewrite_m(prop->visible.expr);
388 dep = expr_transform(dep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 dep = expr_alloc_and(expr_copy(basedep), dep);
390 dep = expr_eliminate_dups(dep);
391 if (menu->sym && menu->sym->type != S_TRISTATE)
392 dep = expr_trans_bool(dep);
393 prop->visible.expr = dep;
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200394
395 /*
396 * Handle selects and implies, which modify the
397 * dependencies of the selected/implied symbol
398 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399 if (prop->type == P_SELECT) {
400 struct symbol *es = prop_get_symbol(prop);
401 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
402 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
Nicolas Pitre237e3ad2016-11-11 00:10:05 -0500403 } else if (prop->type == P_IMPLY) {
404 struct symbol *es = prop_get_symbol(prop);
405 es->implied.expr = expr_alloc_or(es->implied.expr,
406 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407 }
408 }
409 }
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200410
411 /*
412 * Recursively process children in the same fashion before
413 * moving on
414 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415 for (menu = parent->list; menu; menu = menu->next)
416 menu_finalize(menu);
417 } else if (sym) {
418 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
419 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
420 basedep = expr_eliminate_dups(expr_transform(basedep));
421 last_menu = NULL;
422 for (menu = parent->next; menu; menu = menu->next) {
423 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
424 if (!expr_contains_symbol(dep, sym))
425 break;
426 if (expr_depends_symbol(dep, sym))
427 goto next;
428 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
429 dep = expr_eliminate_dups(expr_transform(dep));
430 dep2 = expr_copy(basedep);
431 expr_eliminate_eq(&dep, &dep2);
432 expr_free(dep);
433 if (!expr_is_yes(dep2)) {
434 expr_free(dep2);
435 break;
436 }
437 expr_free(dep2);
438 next:
439 menu_finalize(menu);
440 menu->parent = parent;
441 last_menu = menu;
442 }
443 if (last_menu) {
444 parent->list = parent->next;
445 parent->next = last_menu->next;
446 last_menu->next = NULL;
447 }
Arnaud Lacombeff5ff602010-09-26 16:22:03 -0400448
Arnaud Lacombeec6452a2011-06-08 01:42:11 -0400449 sym->dir_dep.expr = expr_alloc_or(sym->dir_dep.expr, parent->dep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 }
451 for (menu = parent->list; menu; menu = menu->next) {
Roman Zippel5a1aa8a2008-02-29 05:11:50 +0100452 if (sym && sym_is_choice(sym) &&
453 menu->sym && !sym_is_choice_value(menu->sym)) {
454 current_entry = menu;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455 menu->sym->flags |= SYMBOL_CHOICEVAL;
456 if (!menu->prompt)
457 menu_warn(menu, "choice value must have a prompt");
458 for (prop = menu->sym->prop; prop; prop = prop->next) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459 if (prop->type == P_DEFAULT)
460 prop_warn(prop, "defaults for choice "
Roman Zippel5a1aa8a2008-02-29 05:11:50 +0100461 "values not supported");
462 if (prop->menu == menu)
463 continue;
464 if (prop->type == P_PROMPT &&
465 prop->menu->parent->sym != sym)
466 prop_warn(prop, "choice value used outside its choice group");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467 }
Jan Beulichf5eaa322008-01-24 11:54:23 +0000468 /* Non-tristate choice values of tristate choices must
469 * depend on the choice being set to Y. The choice
470 * values' dependencies were propagated to their
471 * properties above, so the change here must be re-
Roman Zippel5a1aa8a2008-02-29 05:11:50 +0100472 * propagated.
473 */
Jan Beulichf5eaa322008-01-24 11:54:23 +0000474 if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
475 basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
Roman Zippel5a1aa8a2008-02-29 05:11:50 +0100476 menu->dep = expr_alloc_and(basedep, menu->dep);
Jan Beulichf5eaa322008-01-24 11:54:23 +0000477 for (prop = menu->sym->prop; prop; prop = prop->next) {
478 if (prop->menu != menu)
479 continue;
Roman Zippel5a1aa8a2008-02-29 05:11:50 +0100480 prop->visible.expr = expr_alloc_and(expr_copy(basedep),
481 prop->visible.expr);
Jan Beulichf5eaa322008-01-24 11:54:23 +0000482 }
483 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484 menu_add_symbol(P_CHOICE, sym, NULL);
485 prop = sym_get_choice_prop(sym);
486 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
487 ;
Roman Zippel7a962922008-01-14 04:50:23 +0100488 *ep = expr_alloc_one(E_LIST, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489 (*ep)->right.sym = menu->sym;
490 }
491 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
492 for (last_menu = menu->list; ; last_menu = last_menu->next) {
493 last_menu->parent = parent;
494 if (!last_menu->next)
495 break;
496 }
497 last_menu->next = menu->next;
498 menu->next = menu->list;
499 menu->list = NULL;
500 }
501 }
502
503 if (sym && !(sym->flags & SYMBOL_WARNED)) {
504 if (sym->type == S_UNKNOWN)
Roman Zippelf001f7f2006-06-08 22:12:48 -0700505 menu_warn(parent, "config symbol defined without type");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506
507 if (sym_is_choice(sym) && !parent->prompt)
Roman Zippelf001f7f2006-06-08 22:12:48 -0700508 menu_warn(parent, "choice must have a prompt");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509
510 /* Check properties connected to this symbol */
511 sym_check_prop(sym);
512 sym->flags |= SYMBOL_WARNED;
513 }
514
515 if (sym && !sym_is_optional(sym) && parent->prompt) {
516 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
517 expr_alloc_and(parent->prompt->visible.expr,
518 expr_alloc_symbol(&symbol_mod)));
519 }
520}
521
Li Zefan22c7eca2010-04-14 11:46:02 +0800522bool menu_has_prompt(struct menu *menu)
523{
524 if (!menu->prompt)
525 return false;
526 return true;
527}
528
Dirk Gouders1278ebd2013-05-19 21:49:34 +0200529/*
530 * Determine if a menu is empty.
531 * A menu is considered empty if it contains no or only
532 * invisible entries.
533 */
534bool menu_is_empty(struct menu *menu)
535{
536 struct menu *child;
537
538 for (child = menu->list; child; child = child->next) {
539 if (menu_is_visible(child))
540 return(false);
541 }
542 return(true);
543}
544
Linus Torvalds1da177e2005-04-16 15:20:36 -0700545bool menu_is_visible(struct menu *menu)
546{
547 struct menu *child;
548 struct symbol *sym;
549 tristate visible;
550
551 if (!menu->prompt)
552 return false;
Li Zefan22c7eca2010-04-14 11:46:02 +0800553
Arnaud Lacombe86e187f2010-11-06 18:30:23 -0300554 if (menu->visibility) {
555 if (expr_calc_value(menu->visibility) == no)
Vegard Nossumaab24a82016-01-01 17:34:05 +0100556 return false;
Arnaud Lacombe86e187f2010-11-06 18:30:23 -0300557 }
558
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559 sym = menu->sym;
560 if (sym) {
561 sym_calc_value(sym);
562 visible = menu->prompt->visible.tri;
563 } else
564 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
565
566 if (visible != no)
567 return true;
Li Zefan22c7eca2010-04-14 11:46:02 +0800568
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569 if (!sym || sym_get_tristate_value(menu->sym) == no)
570 return false;
571
Li Zefan3fb9acb2010-05-07 13:57:07 +0800572 for (child = menu->list; child; child = child->next) {
573 if (menu_is_visible(child)) {
574 if (sym)
575 sym->flags |= SYMBOL_DEF_USER;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576 return true;
Li Zefan3fb9acb2010-05-07 13:57:07 +0800577 }
578 }
Li Zefan22c7eca2010-04-14 11:46:02 +0800579
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580 return false;
581}
582
583const char *menu_get_prompt(struct menu *menu)
584{
585 if (menu->prompt)
EGRY Gabor01771b02008-01-11 23:53:43 +0100586 return menu->prompt->text;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587 else if (menu->sym)
EGRY Gabor01771b02008-01-11 23:53:43 +0100588 return menu->sym->name;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700589 return NULL;
590}
591
592struct menu *menu_get_root_menu(struct menu *menu)
593{
594 return &rootmenu;
595}
596
597struct menu *menu_get_parent_menu(struct menu *menu)
598{
599 enum prop_type type;
600
601 for (; menu != &rootmenu; menu = menu->parent) {
602 type = menu->prompt ? menu->prompt->type : 0;
603 if (type == P_MENU)
604 break;
605 }
606 return menu;
607}
608
Sam Ravnborg03d29122007-07-21 00:00:36 +0200609bool menu_has_help(struct menu *menu)
610{
611 return menu->help != NULL;
612}
613
614const char *menu_get_help(struct menu *menu)
615{
616 if (menu->help)
617 return menu->help;
618 else
619 return "";
620}
Cheng Renquan6bd59992009-07-12 16:11:44 +0800621
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400622static void get_prompt_str(struct gstr *r, struct property *prop,
Benjamin Poirierbad99552012-10-21 05:27:53 -0400623 struct list_head *head)
Cheng Renquan6bd59992009-07-12 16:11:44 +0800624{
625 int i, j;
Benjamin Poirier5e609ad2012-08-23 14:55:06 -0400626 struct menu *submenu[8], *menu, *location = NULL;
Peter Kümmel2d560302014-11-04 12:01:59 +0100627 struct jump_key *jump = NULL;
Cheng Renquan6bd59992009-07-12 16:11:44 +0800628
629 str_printf(r, _("Prompt: %s\n"), _(prop->text));
Cheng Renquan6bd59992009-07-12 16:11:44 +0800630 menu = prop->menu->parent;
Benjamin Poirier5e609ad2012-08-23 14:55:06 -0400631 for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
632 bool accessible = menu_is_visible(menu);
633
Cheng Renquan6bd59992009-07-12 16:11:44 +0800634 submenu[i++] = menu;
Benjamin Poirier5e609ad2012-08-23 14:55:06 -0400635 if (location == NULL && accessible)
636 location = menu;
637 }
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400638 if (head && location) {
Alan Cox177acf72012-11-06 14:32:08 +0000639 jump = xmalloc(sizeof(struct jump_key));
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400640
Benjamin Poirier5e609ad2012-08-23 14:55:06 -0400641 if (menu_is_visible(prop->menu)) {
642 /*
643 * There is not enough room to put the hint at the
644 * beginning of the "Prompt" line. Put the hint on the
645 * last "Location" line even when it would belong on
646 * the former.
647 */
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400648 jump->target = prop->menu;
Benjamin Poirier5e609ad2012-08-23 14:55:06 -0400649 } else
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400650 jump->target = location;
651
Benjamin Poirierbad99552012-10-21 05:27:53 -0400652 if (list_empty(head))
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400653 jump->index = 0;
654 else
Benjamin Poirierbad99552012-10-21 05:27:53 -0400655 jump->index = list_entry(head->prev, struct jump_key,
656 entries)->index + 1;
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400657
Benjamin Poirierbad99552012-10-21 05:27:53 -0400658 list_add_tail(&jump->entries, head);
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400659 }
Benjamin Poirier5e609ad2012-08-23 14:55:06 -0400660
Cheng Renquan6bd59992009-07-12 16:11:44 +0800661 if (i > 0) {
662 str_printf(r, _(" Location:\n"));
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400663 for (j = 4; --i >= 0; j += 2) {
Cheng Renquan6bd59992009-07-12 16:11:44 +0800664 menu = submenu[i];
Peter Kümmel2d560302014-11-04 12:01:59 +0100665 if (jump && menu == location)
Martin Walch503c8232013-10-03 18:35:16 +0200666 jump->offset = strlen(r->s);
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400667 str_printf(r, "%*c-> %s", j, ' ',
668 _(menu_get_prompt(menu)));
Cheng Renquan6bd59992009-07-12 16:11:44 +0800669 if (menu->sym) {
670 str_printf(r, " (%s [=%s])", menu->sym->name ?
671 menu->sym->name : _("<choice>"),
672 sym_get_string_value(menu->sym));
673 }
674 str_append(r, "\n");
675 }
676 }
677}
678
Benjamin Poirier5e609ad2012-08-23 14:55:06 -0400679/*
Martin Walch8d9dfe82013-10-03 17:28:14 +0200680 * get property of type P_SYMBOL
Wengmeilingbcdedcc2013-04-30 15:28:46 -0700681 */
682static struct property *get_symbol_prop(struct symbol *sym)
683{
684 struct property *prop = NULL;
685
686 for_all_properties(sym, prop, P_SYMBOL)
687 break;
688 return prop;
689}
690
Nicolas Pitre237e3ad2016-11-11 00:10:05 -0500691static void get_symbol_props_str(struct gstr *r, struct symbol *sym,
692 enum prop_type tok, const char *prefix)
693{
694 bool hit = false;
695 struct property *prop;
696
697 for_all_properties(sym, prop, tok) {
698 if (!hit) {
699 str_append(r, prefix);
700 hit = true;
701 } else
702 str_printf(r, " && ");
703 expr_gstr_print(prop->expr, r);
704 }
705 if (hit)
706 str_append(r, "\n");
707}
708
Wengmeilingbcdedcc2013-04-30 15:28:46 -0700709/*
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400710 * head is optional and may be NULL
Benjamin Poirier5e609ad2012-08-23 14:55:06 -0400711 */
Michal Marekad8d40c2015-02-24 16:37:13 +0100712static void get_symbol_str(struct gstr *r, struct symbol *sym,
Benjamin Poirierbad99552012-10-21 05:27:53 -0400713 struct list_head *head)
Cheng Renquan6bd59992009-07-12 16:11:44 +0800714{
Cheng Renquan6bd59992009-07-12 16:11:44 +0800715 struct property *prop;
716
Li Zefanb040b442010-05-07 13:56:33 +0800717 if (sym && sym->name) {
Cheng Renquan6bd59992009-07-12 16:11:44 +0800718 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
719 sym_get_string_value(sym));
Li Zefanb040b442010-05-07 13:56:33 +0800720 str_printf(r, "Type : %s\n", sym_type_name(sym->type));
Li Zefan70ed0742010-05-07 13:56:50 +0800721 if (sym->type == S_INT || sym->type == S_HEX) {
722 prop = sym_get_range_prop(sym);
723 if (prop) {
724 str_printf(r, "Range : ");
725 expr_gstr_print(prop->expr, r);
726 str_append(r, "\n");
727 }
728 }
Li Zefanb040b442010-05-07 13:56:33 +0800729 }
Cheng Renquan6bd59992009-07-12 16:11:44 +0800730 for_all_prompts(sym, prop)
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400731 get_prompt_str(r, prop, head);
Li Zefan383da762013-05-07 15:56:54 +0200732
Wengmeilingbcdedcc2013-04-30 15:28:46 -0700733 prop = get_symbol_prop(sym);
Li Zefan383da762013-05-07 15:56:54 +0200734 if (prop) {
735 str_printf(r, _(" Defined at %s:%d\n"), prop->menu->file->name,
736 prop->menu->lineno);
737 if (!expr_is_yes(prop->visible.expr)) {
738 str_append(r, _(" Depends on: "));
739 expr_gstr_print(prop->visible.expr, r);
740 str_append(r, "\n");
741 }
Wengmeilingbcdedcc2013-04-30 15:28:46 -0700742 }
Li Zefan383da762013-05-07 15:56:54 +0200743
Nicolas Pitre237e3ad2016-11-11 00:10:05 -0500744 get_symbol_props_str(r, sym, P_SELECT, _(" Selects: "));
Cheng Renquan6bd59992009-07-12 16:11:44 +0800745 if (sym->rev_dep.expr) {
746 str_append(r, _(" Selected by: "));
747 expr_gstr_print(sym->rev_dep.expr, r);
748 str_append(r, "\n");
749 }
Nicolas Pitre237e3ad2016-11-11 00:10:05 -0500750
751 get_symbol_props_str(r, sym, P_IMPLY, _(" Implies: "));
752 if (sym->implied.expr) {
753 str_append(r, _(" Implied by: "));
754 expr_gstr_print(sym->implied.expr, r);
755 str_append(r, "\n");
756 }
757
Cheng Renquan6bd59992009-07-12 16:11:44 +0800758 str_append(r, "\n\n");
759}
760
Benjamin Poirierbad99552012-10-21 05:27:53 -0400761struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head)
nir.tzachar@gmail.com692d97c2009-11-25 12:28:43 +0200762{
763 struct symbol *sym;
764 struct gstr res = str_new();
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400765 int i;
nir.tzachar@gmail.com692d97c2009-11-25 12:28:43 +0200766
767 for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400768 get_symbol_str(&res, sym, head);
nir.tzachar@gmail.com692d97c2009-11-25 12:28:43 +0200769 if (!i)
770 str_append(&res, _("No matches found.\n"));
771 return res;
772}
773
774
Cheng Renquan6bd59992009-07-12 16:11:44 +0800775void menu_get_ext_help(struct menu *menu, struct gstr *help)
776{
777 struct symbol *sym = menu->sym;
Arnaud Lacombe57e62922011-08-03 21:52:07 -0400778 const char *help_text = nohelp_text;
Cheng Renquan6bd59992009-07-12 16:11:44 +0800779
780 if (menu_has_help(menu)) {
Srinivas Kandagatla3f198df2011-08-02 18:49:52 +0100781 if (sym->name)
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400782 str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
Arnaud Lacombe57e62922011-08-03 21:52:07 -0400783 help_text = menu_get_help(menu);
Cheng Renquan6bd59992009-07-12 16:11:44 +0800784 }
Arnaud Lacombe57e62922011-08-03 21:52:07 -0400785 str_printf(help, "%s\n", _(help_text));
Cheng Renquan47791052009-07-12 16:11:46 +0800786 if (sym)
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400787 get_symbol_str(help, sym, NULL);
Cheng Renquan6bd59992009-07-12 16:11:44 +0800788}