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Masahiro Yamada0c874102018-12-18 21:13:35 +09001// SPDX-License-Identifier: GPL-2.0
Linus Torvalds1da177e2005-04-16 15:20:36 -07002/*
3 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 */
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
Roman Zippela02f0572005-11-08 21:34:53 -080065struct menu *menu_add_menu(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -070066{
Linus Torvalds1da177e2005-04-16 15:20:36 -070067 last_entry_ptr = &current_entry->list;
Roman Zippela02f0572005-11-08 21:34:53 -080068 return current_menu = current_entry;
Linus Torvalds1da177e2005-04-16 15:20:36 -070069}
70
71void menu_end_menu(void)
72{
73 last_entry_ptr = &current_menu->next;
74 current_menu = current_menu->parent;
75}
76
Ulf Magnusson9a826842017-10-05 14:01:13 +020077/*
78 * Rewrites 'm' to 'm' && MODULES, so that it evaluates to 'n' when running
79 * without modules
80 */
81static struct expr *rewrite_m(struct expr *e)
Linus Torvalds1da177e2005-04-16 15:20:36 -070082{
83 if (!e)
84 return e;
85
86 switch (e->type) {
87 case E_NOT:
Ulf Magnusson9a826842017-10-05 14:01:13 +020088 e->left.expr = rewrite_m(e->left.expr);
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 break;
90 case E_OR:
91 case E_AND:
Ulf Magnusson9a826842017-10-05 14:01:13 +020092 e->left.expr = rewrite_m(e->left.expr);
93 e->right.expr = rewrite_m(e->right.expr);
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 break;
95 case E_SYMBOL:
96 /* change 'm' into 'm' && MODULES */
97 if (e->left.sym == &symbol_mod)
98 return expr_alloc_and(e, expr_alloc_symbol(modules_sym));
99 break;
100 default:
101 break;
102 }
103 return e;
104}
105
106void menu_add_dep(struct expr *dep)
107{
Ulf Magnussonf77850d2017-10-05 14:01:15 +0200108 current_entry->dep = expr_alloc_and(current_entry->dep, dep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109}
110
111void menu_set_type(int type)
112{
113 struct symbol *sym = current_entry->sym;
114
115 if (sym->type == type)
116 return;
117 if (sym->type == S_UNKNOWN) {
118 sym->type = type;
119 return;
120 }
Martin Walch57540f1d2013-10-03 18:32:02 +0200121 menu_warn(current_entry,
122 "ignoring type redefinition of '%s' from '%s' to '%s'",
123 sym->name ? sym->name : "<choice>",
124 sym_type_name(sym->type), sym_type_name(type));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125}
126
Masahiro Yamada2ffeef62019-12-17 13:14:21 +0900127static struct property *menu_add_prop(enum prop_type type, struct expr *expr,
128 struct expr *dep)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129{
130 struct property *prop = prop_alloc(type, current_entry->sym);
131
132 prop->menu = current_entry;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133 prop->expr = expr;
Ulf Magnussonf77850d2017-10-05 14:01:15 +0200134 prop->visible.expr = dep;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136 return prop;
137}
138
Masahiro Yamada024352ff2019-12-17 13:14:20 +0900139struct property *menu_add_prompt(enum prop_type type, char *prompt,
140 struct expr *dep)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141{
Masahiro Yamada2ffeef62019-12-17 13:14:21 +0900142 struct property *prop = menu_add_prop(type, NULL, dep);
Masahiro Yamada024352ff2019-12-17 13:14:20 +0900143
144 if (isspace(*prompt)) {
145 prop_warn(prop, "leading whitespace ignored");
146 while (isspace(*prompt))
147 prompt++;
148 }
149 if (current_entry->prompt)
150 prop_warn(prop, "prompt redefined");
151
152 /* Apply all upper menus' visibilities to actual prompts. */
153 if (type == P_PROMPT) {
154 struct menu *menu = current_entry;
155
156 while ((menu = menu->parent) != NULL) {
157 struct expr *dup_expr;
158
159 if (!menu->visibility)
160 continue;
161 /*
162 * Do not add a reference to the menu's visibility
163 * expression but use a copy of it. Otherwise the
164 * expression reduction functions will modify
165 * expressions that have multiple references which
166 * can cause unwanted side effects.
167 */
168 dup_expr = expr_copy(menu->visibility);
169
170 prop->visible.expr = expr_alloc_and(prop->visible.expr,
171 dup_expr);
172 }
173 }
174
175 current_entry->prompt = prop;
176 prop->text = prompt;
177
178 return prop;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179}
180
Arnaud Lacombe86e187f2010-11-06 18:30:23 -0300181void menu_add_visibility(struct expr *expr)
182{
183 current_entry->visibility = expr_alloc_and(current_entry->visibility,
184 expr);
185}
186
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
188{
Masahiro Yamada2ffeef62019-12-17 13:14:21 +0900189 menu_add_prop(type, expr, dep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190}
191
192void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
193{
Masahiro Yamada2ffeef62019-12-17 13:14:21 +0900194 menu_add_prop(type, expr_alloc_symbol(sym), dep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195}
196
Masahiro Yamadace2164a2018-12-11 20:01:00 +0900197void menu_add_option_modules(void)
Roman Zippelf6a88aa2006-06-08 22:12:44 -0700198{
Masahiro Yamadace2164a2018-12-11 20:01:00 +0900199 if (modules_sym)
200 zconf_error("symbol '%s' redefines option 'modules' already defined by symbol '%s'",
201 current_entry->sym->name, modules_sym->name);
202 modules_sym = current_entry->sym;
203}
204
205void menu_add_option_defconfig_list(void)
206{
207 if (!sym_defconfig_list)
208 sym_defconfig_list = current_entry->sym;
209 else if (sym_defconfig_list != current_entry->sym)
210 zconf_error("trying to redefine defconfig symbol");
211 sym_defconfig_list->flags |= SYMBOL_NO_WRITE;
212}
213
214void menu_add_option_allnoconfig_y(void)
215{
216 current_entry->sym->flags |= SYMBOL_ALLNOCONFIG_Y;
Roman Zippelf6a88aa2006-06-08 22:12:44 -0700217}
218
Arnaud Lacombeab60bd02010-12-05 01:29:25 -0500219static int menu_validate_number(struct symbol *sym, struct symbol *sym2)
Roman Zippel4cf3cbe2005-11-08 21:34:49 -0800220{
221 return sym2->type == S_INT || sym2->type == S_HEX ||
222 (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
223}
224
Trevor Keith4356f482009-09-18 12:49:23 -0700225static void sym_check_prop(struct symbol *sym)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226{
227 struct property *prop;
228 struct symbol *sym2;
Nicolas Pitre237e3ad2016-11-11 00:10:05 -0500229 char *use;
230
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231 for (prop = sym->prop; prop; prop = prop->next) {
232 switch (prop->type) {
233 case P_DEFAULT:
234 if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
235 prop->expr->type != E_SYMBOL)
236 prop_warn(prop,
Li Zefan4280eae2010-04-14 11:44:05 +0800237 "default for config symbol '%s'"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 " must be a single symbol", sym->name);
Arnaud Lacombeab60bd02010-12-05 01:29:25 -0500239 if (prop->expr->type != E_SYMBOL)
240 break;
241 sym2 = prop_get_symbol(prop);
242 if (sym->type == S_HEX || sym->type == S_INT) {
243 if (!menu_validate_number(sym, sym2))
244 prop_warn(prop,
245 "'%s': number is invalid",
246 sym->name);
247 }
Ulf Magnusson2c37e082017-10-04 01:25:46 +0200248 if (sym_is_choice(sym)) {
249 struct property *choice_prop =
250 sym_get_choice_prop(sym2);
251
252 if (!choice_prop ||
253 prop_get_symbol(choice_prop) != sym)
254 prop_warn(prop,
255 "choice default symbol '%s' is not contained in the choice",
256 sym2->name);
257 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258 break;
259 case P_SELECT:
Nicolas Pitre237e3ad2016-11-11 00:10:05 -0500260 case P_IMPLY:
261 use = prop->type == P_SELECT ? "select" : "imply";
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262 sym2 = prop_get_symbol(prop);
263 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
264 prop_warn(prop,
Nicolas Pitre237e3ad2016-11-11 00:10:05 -0500265 "config symbol '%s' uses %s, but is "
Masahiro Yamadab92d8042017-12-16 00:38:02 +0900266 "not bool or tristate", sym->name, use);
Sam Ravnborg603d4982008-02-02 21:09:57 +0100267 else if (sym2->type != S_UNKNOWN &&
Masahiro Yamadabb66fc62014-06-10 19:08:13 +0900268 sym2->type != S_BOOLEAN &&
269 sym2->type != S_TRISTATE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270 prop_warn(prop,
Nicolas Pitre237e3ad2016-11-11 00:10:05 -0500271 "'%s' has wrong type. '%s' only "
Masahiro Yamadab92d8042017-12-16 00:38:02 +0900272 "accept arguments of bool and "
Nicolas Pitre237e3ad2016-11-11 00:10:05 -0500273 "tristate type", sym2->name, use);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274 break;
275 case P_RANGE:
276 if (sym->type != S_INT && sym->type != S_HEX)
277 prop_warn(prop, "range is only allowed "
Masahiro Yamadabb66fc62014-06-10 19:08:13 +0900278 "for int or hex symbols");
Arnaud Lacombeab60bd02010-12-05 01:29:25 -0500279 if (!menu_validate_number(sym, prop->expr->left.sym) ||
280 !menu_validate_number(sym, prop->expr->right.sym))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281 prop_warn(prop, "range is invalid");
282 break;
283 default:
284 ;
285 }
286 }
287}
288
289void menu_finalize(struct menu *parent)
290{
291 struct menu *menu, *last_menu;
292 struct symbol *sym;
293 struct property *prop;
294 struct expr *parentdep, *basedep, *dep, *dep2, **ep;
295
296 sym = parent->sym;
297 if (parent->list) {
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200298 /*
299 * This menu node has children. We (recursively) process them
300 * and propagate parent dependencies before moving on.
301 */
302
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303 if (sym && sym_is_choice(sym)) {
Roman Zippel5a1aa8a2008-02-29 05:11:50 +0100304 if (sym->type == S_UNKNOWN) {
305 /* find the first choice value to find out choice type */
306 current_entry = parent;
307 for (menu = parent->list; menu; menu = menu->next) {
308 if (menu->sym && menu->sym->type != S_UNKNOWN) {
Jan Beulichf5eaa322008-01-24 11:54:23 +0000309 menu_set_type(menu->sym->type);
Roman Zippel5a1aa8a2008-02-29 05:11:50 +0100310 break;
311 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312 }
313 }
Roman Zippel5a1aa8a2008-02-29 05:11:50 +0100314 /* set the type of the remaining choice values */
315 for (menu = parent->list; menu; menu = menu->next) {
316 current_entry = menu;
317 if (menu->sym && menu->sym->type == S_UNKNOWN)
318 menu_set_type(sym->type);
319 }
Ulf Magnussond3465af2018-01-14 15:12:05 +0100320
321 /*
322 * Use the choice itself as the parent dependency of
323 * the contained items. This turns the mode of the
324 * choice into an upper bound on the visibility of the
325 * choice value symbols.
326 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327 parentdep = expr_alloc_symbol(sym);
Masahiro Yamadade026ca2019-12-17 13:14:17 +0900328 } else {
329 /* Menu node for 'menu', 'if' */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330 parentdep = parent->dep;
Masahiro Yamadade026ca2019-12-17 13:14:17 +0900331 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200333 /* For each child menu node... */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334 for (menu = parent->list; menu; menu = menu->next) {
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200335 /*
336 * Propagate parent dependencies to the child menu
337 * node, also rewriting and simplifying expressions
338 */
Ulf Magnussonf77850d2017-10-05 14:01:15 +0200339 basedep = rewrite_m(menu->dep);
340 basedep = expr_transform(basedep);
Linus Torvaldse8b8c972007-10-19 21:25:45 -0700341 basedep = expr_alloc_and(expr_copy(parentdep), basedep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342 basedep = expr_eliminate_dups(basedep);
343 menu->dep = basedep;
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200344
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 if (menu->sym)
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200346 /*
347 * Note: For symbols, all prompts are included
348 * too in the symbol's own property list
349 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 prop = menu->sym->prop;
351 else
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200352 /*
353 * For non-symbol menu nodes, we just need to
354 * handle the prompt
355 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 prop = menu->prompt;
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200357
358 /* For each property... */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 for (; prop; prop = prop->next) {
360 if (prop->menu != menu)
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200361 /*
362 * Two possibilities:
363 *
364 * 1. The property lacks dependencies
365 * and so isn't location-specific,
366 * e.g. an 'option'
367 *
368 * 2. The property belongs to a symbol
369 * defined in multiple locations and
370 * is from some other location. It
371 * will be handled there in that
372 * case.
373 *
374 * Skip the property.
375 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 continue;
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200377
378 /*
379 * Propagate parent dependencies to the
380 * property's condition, rewriting and
381 * simplifying expressions at the same time
382 */
Ulf Magnussonf77850d2017-10-05 14:01:15 +0200383 dep = rewrite_m(prop->visible.expr);
384 dep = expr_transform(dep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385 dep = expr_alloc_and(expr_copy(basedep), dep);
386 dep = expr_eliminate_dups(dep);
387 if (menu->sym && menu->sym->type != S_TRISTATE)
388 dep = expr_trans_bool(dep);
389 prop->visible.expr = dep;
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200390
391 /*
392 * Handle selects and implies, which modify the
393 * dependencies of the selected/implied symbol
394 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395 if (prop->type == P_SELECT) {
396 struct symbol *es = prop_get_symbol(prop);
397 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
398 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
Nicolas Pitre237e3ad2016-11-11 00:10:05 -0500399 } else if (prop->type == P_IMPLY) {
400 struct symbol *es = prop_get_symbol(prop);
401 es->implied.expr = expr_alloc_or(es->implied.expr,
402 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403 }
404 }
405 }
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200406
Ulf Magnusson7cf33f82017-10-08 19:35:46 +0200407 if (sym && sym_is_choice(sym))
408 expr_free(parentdep);
409
Ulf Magnussonfa8ceda2017-10-05 14:01:14 +0200410 /*
411 * Recursively process children in the same fashion before
412 * moving on
413 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 for (menu = parent->list; menu; menu = menu->next)
415 menu_finalize(menu);
416 } else if (sym) {
Ulf Magnusson05cccce2017-10-08 19:42:18 +0200417 /*
418 * Automatic submenu creation. If sym is a symbol and A, B, C,
419 * ... are consecutive items (symbols, menus, ifs, etc.) that
420 * all depend on sym, then the following menu structure is
421 * created:
422 *
423 * sym
424 * +-A
425 * +-B
426 * +-C
427 * ...
428 *
429 * This also works recursively, giving the following structure
430 * if A is a symbol and B depends on A:
431 *
432 * sym
433 * +-A
434 * | +-B
435 * +-C
436 * ...
437 */
438
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
440 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
441 basedep = expr_eliminate_dups(expr_transform(basedep));
Ulf Magnusson05cccce2017-10-08 19:42:18 +0200442
443 /* Examine consecutive elements after sym */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444 last_menu = NULL;
445 for (menu = parent->next; menu; menu = menu->next) {
446 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
447 if (!expr_contains_symbol(dep, sym))
Ulf Magnusson05cccce2017-10-08 19:42:18 +0200448 /* No dependency, quit */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449 break;
450 if (expr_depends_symbol(dep, sym))
Ulf Magnusson05cccce2017-10-08 19:42:18 +0200451 /* Absolute dependency, put in submenu */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452 goto next;
Ulf Magnusson05cccce2017-10-08 19:42:18 +0200453
454 /*
455 * Also consider it a dependency on sym if our
456 * dependencies contain sym and are a "superset" of
457 * sym's dependencies, e.g. '(sym || Q) && R' when sym
458 * depends on R.
459 *
460 * Note that 'R' might be from an enclosing menu or if,
461 * making this a more common case than it might seem.
462 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
464 dep = expr_eliminate_dups(expr_transform(dep));
465 dep2 = expr_copy(basedep);
466 expr_eliminate_eq(&dep, &dep2);
467 expr_free(dep);
468 if (!expr_is_yes(dep2)) {
Ulf Magnusson05cccce2017-10-08 19:42:18 +0200469 /* Not superset, quit */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470 expr_free(dep2);
471 break;
472 }
Ulf Magnusson05cccce2017-10-08 19:42:18 +0200473 /* Superset, put in submenu */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 expr_free(dep2);
475 next:
476 menu_finalize(menu);
477 menu->parent = parent;
478 last_menu = menu;
479 }
Ulf Magnussonae7440e2017-10-08 19:35:44 +0200480 expr_free(basedep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 if (last_menu) {
482 parent->list = parent->next;
483 parent->next = last_menu->next;
484 last_menu->next = NULL;
485 }
Arnaud Lacombeff5ff602010-09-26 16:22:03 -0400486
Arnaud Lacombeec6452a2011-06-08 01:42:11 -0400487 sym->dir_dep.expr = expr_alloc_or(sym->dir_dep.expr, parent->dep);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488 }
489 for (menu = parent->list; menu; menu = menu->next) {
Roman Zippel5a1aa8a2008-02-29 05:11:50 +0100490 if (sym && sym_is_choice(sym) &&
491 menu->sym && !sym_is_choice_value(menu->sym)) {
492 current_entry = menu;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493 menu->sym->flags |= SYMBOL_CHOICEVAL;
494 if (!menu->prompt)
495 menu_warn(menu, "choice value must have a prompt");
496 for (prop = menu->sym->prop; prop; prop = prop->next) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497 if (prop->type == P_DEFAULT)
498 prop_warn(prop, "defaults for choice "
Roman Zippel5a1aa8a2008-02-29 05:11:50 +0100499 "values not supported");
500 if (prop->menu == menu)
501 continue;
502 if (prop->type == P_PROMPT &&
503 prop->menu->parent->sym != sym)
504 prop_warn(prop, "choice value used outside its choice group");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505 }
Jan Beulichf5eaa322008-01-24 11:54:23 +0000506 /* Non-tristate choice values of tristate choices must
507 * depend on the choice being set to Y. The choice
508 * values' dependencies were propagated to their
509 * properties above, so the change here must be re-
Roman Zippel5a1aa8a2008-02-29 05:11:50 +0100510 * propagated.
511 */
Jan Beulichf5eaa322008-01-24 11:54:23 +0000512 if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
513 basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
Roman Zippel5a1aa8a2008-02-29 05:11:50 +0100514 menu->dep = expr_alloc_and(basedep, menu->dep);
Jan Beulichf5eaa322008-01-24 11:54:23 +0000515 for (prop = menu->sym->prop; prop; prop = prop->next) {
516 if (prop->menu != menu)
517 continue;
Roman Zippel5a1aa8a2008-02-29 05:11:50 +0100518 prop->visible.expr = expr_alloc_and(expr_copy(basedep),
519 prop->visible.expr);
Jan Beulichf5eaa322008-01-24 11:54:23 +0000520 }
521 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522 menu_add_symbol(P_CHOICE, sym, NULL);
523 prop = sym_get_choice_prop(sym);
524 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
525 ;
Roman Zippel7a962922008-01-14 04:50:23 +0100526 *ep = expr_alloc_one(E_LIST, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527 (*ep)->right.sym = menu->sym;
528 }
Ulf Magnusson9d1a9e82018-01-14 15:49:26 +0100529
530 /*
531 * This code serves two purposes:
532 *
533 * (1) Flattening 'if' blocks, which do not specify a submenu
534 * and only add dependencies.
535 *
536 * (Automatic submenu creation might still create a submenu
537 * from an 'if' before this code runs.)
538 *
539 * (2) "Undoing" any automatic submenus created earlier below
540 * promptless symbols.
541 *
542 * Before:
543 *
544 * A
545 * if ... (or promptless symbol)
546 * +-B
547 * +-C
548 * D
549 *
550 * After:
551 *
552 * A
553 * if ... (or promptless symbol)
554 * B
555 * C
556 * D
557 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
559 for (last_menu = menu->list; ; last_menu = last_menu->next) {
560 last_menu->parent = parent;
561 if (!last_menu->next)
562 break;
563 }
564 last_menu->next = menu->next;
565 menu->next = menu->list;
566 menu->list = NULL;
567 }
568 }
569
570 if (sym && !(sym->flags & SYMBOL_WARNED)) {
571 if (sym->type == S_UNKNOWN)
Roman Zippelf001f7f2006-06-08 22:12:48 -0700572 menu_warn(parent, "config symbol defined without type");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700573
574 if (sym_is_choice(sym) && !parent->prompt)
Roman Zippelf001f7f2006-06-08 22:12:48 -0700575 menu_warn(parent, "choice must have a prompt");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576
577 /* Check properties connected to this symbol */
578 sym_check_prop(sym);
579 sym->flags |= SYMBOL_WARNED;
580 }
581
Ulf Magnusson3e41ba02018-01-14 10:56:20 +0100582 /*
583 * For non-optional choices, add a reverse dependency (corresponding to
584 * a select) of '<visibility> && m'. This prevents the user from
585 * setting the choice mode to 'n' when the choice is visible.
586 *
587 * This would also work for non-choice symbols, but only non-optional
588 * choices clear SYMBOL_OPTIONAL as of writing. Choices are implemented
589 * as a type of symbol.
590 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700591 if (sym && !sym_is_optional(sym) && parent->prompt) {
592 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
593 expr_alloc_and(parent->prompt->visible.expr,
594 expr_alloc_symbol(&symbol_mod)));
595 }
596}
597
Li Zefan22c7eca2010-04-14 11:46:02 +0800598bool menu_has_prompt(struct menu *menu)
599{
600 if (!menu->prompt)
601 return false;
602 return true;
603}
604
Dirk Gouders1278ebd2013-05-19 21:49:34 +0200605/*
606 * Determine if a menu is empty.
607 * A menu is considered empty if it contains no or only
608 * invisible entries.
609 */
610bool menu_is_empty(struct menu *menu)
611{
612 struct menu *child;
613
614 for (child = menu->list; child; child = child->next) {
615 if (menu_is_visible(child))
616 return(false);
617 }
618 return(true);
619}
620
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621bool menu_is_visible(struct menu *menu)
622{
623 struct menu *child;
624 struct symbol *sym;
625 tristate visible;
626
627 if (!menu->prompt)
628 return false;
Li Zefan22c7eca2010-04-14 11:46:02 +0800629
Arnaud Lacombe86e187f2010-11-06 18:30:23 -0300630 if (menu->visibility) {
631 if (expr_calc_value(menu->visibility) == no)
Vegard Nossumaab24a82016-01-01 17:34:05 +0100632 return false;
Arnaud Lacombe86e187f2010-11-06 18:30:23 -0300633 }
634
Linus Torvalds1da177e2005-04-16 15:20:36 -0700635 sym = menu->sym;
636 if (sym) {
637 sym_calc_value(sym);
638 visible = menu->prompt->visible.tri;
639 } else
640 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
641
642 if (visible != no)
643 return true;
Li Zefan22c7eca2010-04-14 11:46:02 +0800644
Linus Torvalds1da177e2005-04-16 15:20:36 -0700645 if (!sym || sym_get_tristate_value(menu->sym) == no)
646 return false;
647
Li Zefan3fb9acb2010-05-07 13:57:07 +0800648 for (child = menu->list; child; child = child->next) {
649 if (menu_is_visible(child)) {
650 if (sym)
651 sym->flags |= SYMBOL_DEF_USER;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652 return true;
Li Zefan3fb9acb2010-05-07 13:57:07 +0800653 }
654 }
Li Zefan22c7eca2010-04-14 11:46:02 +0800655
Linus Torvalds1da177e2005-04-16 15:20:36 -0700656 return false;
657}
658
659const char *menu_get_prompt(struct menu *menu)
660{
661 if (menu->prompt)
EGRY Gabor01771b02008-01-11 23:53:43 +0100662 return menu->prompt->text;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663 else if (menu->sym)
EGRY Gabor01771b02008-01-11 23:53:43 +0100664 return menu->sym->name;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665 return NULL;
666}
667
668struct menu *menu_get_root_menu(struct menu *menu)
669{
670 return &rootmenu;
671}
672
673struct menu *menu_get_parent_menu(struct menu *menu)
674{
675 enum prop_type type;
676
677 for (; menu != &rootmenu; menu = menu->parent) {
678 type = menu->prompt ? menu->prompt->type : 0;
679 if (type == P_MENU)
680 break;
681 }
682 return menu;
683}
684
Sam Ravnborg03d29122007-07-21 00:00:36 +0200685bool menu_has_help(struct menu *menu)
686{
687 return menu->help != NULL;
688}
689
690const char *menu_get_help(struct menu *menu)
691{
692 if (menu->help)
693 return menu->help;
694 else
695 return "";
696}
Cheng Renquan6bd59992009-07-12 16:11:44 +0800697
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400698static void get_prompt_str(struct gstr *r, struct property *prop,
Benjamin Poirierbad99552012-10-21 05:27:53 -0400699 struct list_head *head)
Cheng Renquan6bd59992009-07-12 16:11:44 +0800700{
701 int i, j;
Benjamin Poirier5e609ad2012-08-23 14:55:06 -0400702 struct menu *submenu[8], *menu, *location = NULL;
Peter Kümmel2d560302014-11-04 12:01:59 +0100703 struct jump_key *jump = NULL;
Cheng Renquan6bd59992009-07-12 16:11:44 +0800704
Sam Ravnborg694c49a2018-05-22 21:36:12 +0200705 str_printf(r, "Prompt: %s\n", prop->text);
Cheng Renquan6bd59992009-07-12 16:11:44 +0800706 menu = prop->menu->parent;
Benjamin Poirier5e609ad2012-08-23 14:55:06 -0400707 for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
708 bool accessible = menu_is_visible(menu);
709
Cheng Renquan6bd59992009-07-12 16:11:44 +0800710 submenu[i++] = menu;
Benjamin Poirier5e609ad2012-08-23 14:55:06 -0400711 if (location == NULL && accessible)
712 location = menu;
713 }
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400714 if (head && location) {
Alan Cox177acf72012-11-06 14:32:08 +0000715 jump = xmalloc(sizeof(struct jump_key));
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400716
Benjamin Poirier5e609ad2012-08-23 14:55:06 -0400717 if (menu_is_visible(prop->menu)) {
718 /*
719 * There is not enough room to put the hint at the
720 * beginning of the "Prompt" line. Put the hint on the
721 * last "Location" line even when it would belong on
722 * the former.
723 */
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400724 jump->target = prop->menu;
Benjamin Poirier5e609ad2012-08-23 14:55:06 -0400725 } else
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400726 jump->target = location;
727
Benjamin Poirierbad99552012-10-21 05:27:53 -0400728 if (list_empty(head))
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400729 jump->index = 0;
730 else
Benjamin Poirierbad99552012-10-21 05:27:53 -0400731 jump->index = list_entry(head->prev, struct jump_key,
732 entries)->index + 1;
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400733
Benjamin Poirierbad99552012-10-21 05:27:53 -0400734 list_add_tail(&jump->entries, head);
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400735 }
Benjamin Poirier5e609ad2012-08-23 14:55:06 -0400736
Cheng Renquan6bd59992009-07-12 16:11:44 +0800737 if (i > 0) {
Sam Ravnborg694c49a2018-05-22 21:36:12 +0200738 str_printf(r, " Location:\n");
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400739 for (j = 4; --i >= 0; j += 2) {
Cheng Renquan6bd59992009-07-12 16:11:44 +0800740 menu = submenu[i];
Peter Kümmel2d560302014-11-04 12:01:59 +0100741 if (jump && menu == location)
Martin Walch503c8232013-10-03 18:35:16 +0200742 jump->offset = strlen(r->s);
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400743 str_printf(r, "%*c-> %s", j, ' ',
Sam Ravnborg694c49a2018-05-22 21:36:12 +0200744 menu_get_prompt(menu));
Cheng Renquan6bd59992009-07-12 16:11:44 +0800745 if (menu->sym) {
746 str_printf(r, " (%s [=%s])", menu->sym->name ?
Sam Ravnborg694c49a2018-05-22 21:36:12 +0200747 menu->sym->name : "<choice>",
Cheng Renquan6bd59992009-07-12 16:11:44 +0800748 sym_get_string_value(menu->sym));
749 }
750 str_append(r, "\n");
751 }
752 }
753}
754
Benjamin Poirier5e609ad2012-08-23 14:55:06 -0400755/*
Martin Walch8d9dfe82013-10-03 17:28:14 +0200756 * get property of type P_SYMBOL
Wengmeilingbcdedcc2013-04-30 15:28:46 -0700757 */
758static struct property *get_symbol_prop(struct symbol *sym)
759{
760 struct property *prop = NULL;
761
762 for_all_properties(sym, prop, P_SYMBOL)
763 break;
764 return prop;
765}
766
Nicolas Pitre237e3ad2016-11-11 00:10:05 -0500767static void get_symbol_props_str(struct gstr *r, struct symbol *sym,
768 enum prop_type tok, const char *prefix)
769{
770 bool hit = false;
771 struct property *prop;
772
773 for_all_properties(sym, prop, tok) {
774 if (!hit) {
775 str_append(r, prefix);
776 hit = true;
777 } else
778 str_printf(r, " && ");
779 expr_gstr_print(prop->expr, r);
780 }
781 if (hit)
782 str_append(r, "\n");
783}
784
Wengmeilingbcdedcc2013-04-30 15:28:46 -0700785/*
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400786 * head is optional and may be NULL
Benjamin Poirier5e609ad2012-08-23 14:55:06 -0400787 */
Michal Marekad8d40c2015-02-24 16:37:13 +0100788static void get_symbol_str(struct gstr *r, struct symbol *sym,
Benjamin Poirierbad99552012-10-21 05:27:53 -0400789 struct list_head *head)
Cheng Renquan6bd59992009-07-12 16:11:44 +0800790{
Cheng Renquan6bd59992009-07-12 16:11:44 +0800791 struct property *prop;
792
Li Zefanb040b442010-05-07 13:56:33 +0800793 if (sym && sym->name) {
Cheng Renquan6bd59992009-07-12 16:11:44 +0800794 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
795 sym_get_string_value(sym));
Li Zefanb040b442010-05-07 13:56:33 +0800796 str_printf(r, "Type : %s\n", sym_type_name(sym->type));
Li Zefan70ed0742010-05-07 13:56:50 +0800797 if (sym->type == S_INT || sym->type == S_HEX) {
798 prop = sym_get_range_prop(sym);
799 if (prop) {
800 str_printf(r, "Range : ");
801 expr_gstr_print(prop->expr, r);
802 str_append(r, "\n");
803 }
804 }
Li Zefanb040b442010-05-07 13:56:33 +0800805 }
Cheng Renquan6bd59992009-07-12 16:11:44 +0800806 for_all_prompts(sym, prop)
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400807 get_prompt_str(r, prop, head);
Li Zefan383da762013-05-07 15:56:54 +0200808
Wengmeilingbcdedcc2013-04-30 15:28:46 -0700809 prop = get_symbol_prop(sym);
Li Zefan383da762013-05-07 15:56:54 +0200810 if (prop) {
Sam Ravnborg694c49a2018-05-22 21:36:12 +0200811 str_printf(r, " Defined at %s:%d\n", prop->menu->file->name,
Li Zefan383da762013-05-07 15:56:54 +0200812 prop->menu->lineno);
813 if (!expr_is_yes(prop->visible.expr)) {
Sam Ravnborg694c49a2018-05-22 21:36:12 +0200814 str_append(r, " Depends on: ");
Li Zefan383da762013-05-07 15:56:54 +0200815 expr_gstr_print(prop->visible.expr, r);
816 str_append(r, "\n");
817 }
Wengmeilingbcdedcc2013-04-30 15:28:46 -0700818 }
Li Zefan383da762013-05-07 15:56:54 +0200819
Sam Ravnborg694c49a2018-05-22 21:36:12 +0200820 get_symbol_props_str(r, sym, P_SELECT, " Selects: ");
Cheng Renquan6bd59992009-07-12 16:11:44 +0800821 if (sym->rev_dep.expr) {
Eugeniu Roscad9119b52018-02-24 16:24:18 +0100822 expr_gstr_print_revdep(sym->rev_dep.expr, r, yes, " Selected by [y]:\n");
823 expr_gstr_print_revdep(sym->rev_dep.expr, r, mod, " Selected by [m]:\n");
824 expr_gstr_print_revdep(sym->rev_dep.expr, r, no, " Selected by [n]:\n");
Cheng Renquan6bd59992009-07-12 16:11:44 +0800825 }
Nicolas Pitre237e3ad2016-11-11 00:10:05 -0500826
Sam Ravnborg694c49a2018-05-22 21:36:12 +0200827 get_symbol_props_str(r, sym, P_IMPLY, " Implies: ");
Nicolas Pitre237e3ad2016-11-11 00:10:05 -0500828 if (sym->implied.expr) {
Eugeniu Roscad9119b52018-02-24 16:24:18 +0100829 expr_gstr_print_revdep(sym->implied.expr, r, yes, " Implied by [y]:\n");
830 expr_gstr_print_revdep(sym->implied.expr, r, mod, " Implied by [m]:\n");
831 expr_gstr_print_revdep(sym->implied.expr, r, no, " Implied by [n]:\n");
Nicolas Pitre237e3ad2016-11-11 00:10:05 -0500832 }
833
Cheng Renquan6bd59992009-07-12 16:11:44 +0800834 str_append(r, "\n\n");
835}
836
Benjamin Poirierbad99552012-10-21 05:27:53 -0400837struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head)
nir.tzachar@gmail.com692d97c2009-11-25 12:28:43 +0200838{
839 struct symbol *sym;
840 struct gstr res = str_new();
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400841 int i;
nir.tzachar@gmail.com692d97c2009-11-25 12:28:43 +0200842
843 for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400844 get_symbol_str(&res, sym, head);
nir.tzachar@gmail.com692d97c2009-11-25 12:28:43 +0200845 if (!i)
Sam Ravnborg694c49a2018-05-22 21:36:12 +0200846 str_append(&res, "No matches found.\n");
nir.tzachar@gmail.com692d97c2009-11-25 12:28:43 +0200847 return res;
848}
849
850
Cheng Renquan6bd59992009-07-12 16:11:44 +0800851void menu_get_ext_help(struct menu *menu, struct gstr *help)
852{
853 struct symbol *sym = menu->sym;
Arnaud Lacombe57e62922011-08-03 21:52:07 -0400854 const char *help_text = nohelp_text;
Cheng Renquan6bd59992009-07-12 16:11:44 +0800855
856 if (menu_has_help(menu)) {
Srinivas Kandagatla3f198df2011-08-02 18:49:52 +0100857 if (sym->name)
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400858 str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
Arnaud Lacombe57e62922011-08-03 21:52:07 -0400859 help_text = menu_get_help(menu);
Cheng Renquan6bd59992009-07-12 16:11:44 +0800860 }
Sam Ravnborg694c49a2018-05-22 21:36:12 +0200861 str_printf(help, "%s\n", help_text);
Cheng Renquan47791052009-07-12 16:11:46 +0800862 if (sym)
Benjamin Poirier95ac9b32012-08-23 14:55:08 -0400863 get_symbol_str(help, sym, NULL);
Cheng Renquan6bd59992009-07-12 16:11:44 +0800864}