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0c874100 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 LT |
2 | /* |
3 | * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> | |
1da177e4 LT |
4 | */ |
5 | ||
dd003306 | 6 | #include <ctype.h> |
10a4b277 | 7 | #include <stdarg.h> |
1da177e4 LT |
8 | #include <stdlib.h> |
9 | #include <string.h> | |
10 | ||
1da177e4 LT |
11 | #include "lkc.h" |
12 | ||
57e6292d | 13 | static const char nohelp_text[] = "There is no help available for this option."; |
6bd5999d | 14 | |
1da177e4 LT |
15 | struct menu rootmenu; |
16 | static struct menu **last_entry_ptr; | |
17 | ||
18 | struct file *file_list; | |
19 | struct file *current_file; | |
20 | ||
93449082 | 21 | void menu_warn(struct menu *menu, const char *fmt, ...) |
1da177e4 LT |
22 | { |
23 | va_list ap; | |
24 | va_start(ap, fmt); | |
25 | fprintf(stderr, "%s:%d:warning: ", menu->file->name, menu->lineno); | |
26 | vfprintf(stderr, fmt, ap); | |
27 | fprintf(stderr, "\n"); | |
28 | va_end(ap); | |
29 | } | |
30 | ||
31 | static 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 | ||
692d97c3 | 41 | void _menu_init(void) |
1da177e4 LT |
42 | { |
43 | current_entry = current_menu = &rootmenu; | |
44 | last_entry_ptr = &rootmenu.list; | |
45 | } | |
46 | ||
47 | void menu_add_entry(struct symbol *sym) | |
48 | { | |
49 | struct menu *menu; | |
50 | ||
177acf78 | 51 | menu = xmalloc(sizeof(*menu)); |
1da177e4 LT |
52 | memset(menu, 0, sizeof(*menu)); |
53 | menu->sym = sym; | |
54 | menu->parent = current_menu; | |
55 | menu->file = current_file; | |
56 | menu->lineno = zconf_lineno(); | |
57 | ||
58 | *last_entry_ptr = menu; | |
59 | last_entry_ptr = &menu->next; | |
60 | current_entry = menu; | |
59e89e3d SR |
61 | if (sym) |
62 | menu_add_symbol(P_SYMBOL, sym, NULL); | |
1da177e4 LT |
63 | } |
64 | ||
a02f0570 | 65 | struct menu *menu_add_menu(void) |
1da177e4 | 66 | { |
1da177e4 | 67 | last_entry_ptr = ¤t_entry->list; |
644a4b6c MY |
68 | current_menu = current_entry; |
69 | return current_menu; | |
1da177e4 LT |
70 | } |
71 | ||
72 | void menu_end_menu(void) | |
73 | { | |
74 | last_entry_ptr = ¤t_menu->next; | |
75 | current_menu = current_menu->parent; | |
76 | } | |
77 | ||
9a826842 UM |
78 | /* |
79 | * Rewrites 'm' to 'm' && MODULES, so that it evaluates to 'n' when running | |
80 | * without modules | |
81 | */ | |
82 | static struct expr *rewrite_m(struct expr *e) | |
1da177e4 LT |
83 | { |
84 | if (!e) | |
85 | return e; | |
86 | ||
87 | switch (e->type) { | |
88 | case E_NOT: | |
9a826842 | 89 | e->left.expr = rewrite_m(e->left.expr); |
1da177e4 LT |
90 | break; |
91 | case E_OR: | |
92 | case E_AND: | |
9a826842 UM |
93 | e->left.expr = rewrite_m(e->left.expr); |
94 | e->right.expr = rewrite_m(e->right.expr); | |
1da177e4 LT |
95 | break; |
96 | case E_SYMBOL: | |
97 | /* change 'm' into 'm' && MODULES */ | |
98 | if (e->left.sym == &symbol_mod) | |
99 | return expr_alloc_and(e, expr_alloc_symbol(modules_sym)); | |
100 | break; | |
101 | default: | |
102 | break; | |
103 | } | |
104 | return e; | |
105 | } | |
106 | ||
107 | void menu_add_dep(struct expr *dep) | |
108 | { | |
f77850d3 | 109 | current_entry->dep = expr_alloc_and(current_entry->dep, dep); |
1da177e4 LT |
110 | } |
111 | ||
112 | void menu_set_type(int type) | |
113 | { | |
114 | struct symbol *sym = current_entry->sym; | |
115 | ||
116 | if (sym->type == type) | |
117 | return; | |
118 | if (sym->type == S_UNKNOWN) { | |
119 | sym->type = type; | |
120 | return; | |
121 | } | |
57540f1d MW |
122 | menu_warn(current_entry, |
123 | "ignoring type redefinition of '%s' from '%s' to '%s'", | |
124 | sym->name ? sym->name : "<choice>", | |
125 | sym_type_name(sym->type), sym_type_name(type)); | |
1da177e4 LT |
126 | } |
127 | ||
2ffeef61 MY |
128 | static struct property *menu_add_prop(enum prop_type type, struct expr *expr, |
129 | struct expr *dep) | |
1da177e4 | 130 | { |
adf7c5bd | 131 | struct property *prop; |
1da177e4 | 132 | |
adf7c5bd MY |
133 | prop = xmalloc(sizeof(*prop)); |
134 | memset(prop, 0, sizeof(*prop)); | |
135 | prop->type = type; | |
136 | prop->file = current_file; | |
137 | prop->lineno = zconf_lineno(); | |
1da177e4 | 138 | prop->menu = current_entry; |
1da177e4 | 139 | prop->expr = expr; |
f77850d3 | 140 | prop->visible.expr = dep; |
1da177e4 | 141 | |
adf7c5bd MY |
142 | /* append property to the prop list of symbol */ |
143 | if (current_entry->sym) { | |
144 | struct property **propp; | |
145 | ||
146 | for (propp = ¤t_entry->sym->prop; | |
147 | *propp; | |
148 | propp = &(*propp)->next) | |
149 | ; | |
150 | *propp = prop; | |
151 | } | |
152 | ||
024352ff MY |
153 | return prop; |
154 | } | |
155 | ||
156 | struct property *menu_add_prompt(enum prop_type type, char *prompt, | |
157 | struct expr *dep) | |
158 | { | |
2ffeef61 | 159 | struct property *prop = menu_add_prop(type, NULL, dep); |
7ad12278 | 160 | |
024352ff MY |
161 | if (isspace(*prompt)) { |
162 | prop_warn(prop, "leading whitespace ignored"); | |
163 | while (isspace(*prompt)) | |
164 | prompt++; | |
1da177e4 | 165 | } |
024352ff MY |
166 | if (current_entry->prompt) |
167 | prop_warn(prop, "prompt redefined"); | |
168 | ||
169 | /* Apply all upper menus' visibilities to actual prompts. */ | |
170 | if (type == P_PROMPT) { | |
171 | struct menu *menu = current_entry; | |
172 | ||
173 | while ((menu = menu->parent) != NULL) { | |
174 | struct expr *dup_expr; | |
175 | ||
176 | if (!menu->visibility) | |
177 | continue; | |
178 | /* | |
179 | * Do not add a reference to the menu's visibility | |
180 | * expression but use a copy of it. Otherwise the | |
181 | * expression reduction functions will modify | |
182 | * expressions that have multiple references which | |
183 | * can cause unwanted side effects. | |
184 | */ | |
185 | dup_expr = expr_copy(menu->visibility); | |
186 | ||
187 | prop->visible.expr = expr_alloc_and(prop->visible.expr, | |
188 | dup_expr); | |
189 | } | |
190 | } | |
191 | ||
192 | current_entry->prompt = prop; | |
f001f7f8 | 193 | prop->text = prompt; |
1da177e4 LT |
194 | |
195 | return prop; | |
196 | } | |
197 | ||
86e187ff AL |
198 | void menu_add_visibility(struct expr *expr) |
199 | { | |
200 | current_entry->visibility = expr_alloc_and(current_entry->visibility, | |
201 | expr); | |
202 | } | |
203 | ||
1da177e4 LT |
204 | void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep) |
205 | { | |
2ffeef61 | 206 | menu_add_prop(type, expr, dep); |
1da177e4 LT |
207 | } |
208 | ||
209 | void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep) | |
210 | { | |
2ffeef61 | 211 | menu_add_prop(type, expr_alloc_symbol(sym), dep); |
1da177e4 LT |
212 | } |
213 | ||
ce2164ab MY |
214 | void menu_add_option_modules(void) |
215 | { | |
216 | if (modules_sym) | |
217 | zconf_error("symbol '%s' redefines option 'modules' already defined by symbol '%s'", | |
218 | current_entry->sym->name, modules_sym->name); | |
219 | modules_sym = current_entry->sym; | |
220 | } | |
221 | ||
222 | void menu_add_option_defconfig_list(void) | |
223 | { | |
224 | if (!sym_defconfig_list) | |
225 | sym_defconfig_list = current_entry->sym; | |
226 | else if (sym_defconfig_list != current_entry->sym) | |
227 | zconf_error("trying to redefine defconfig symbol"); | |
228 | sym_defconfig_list->flags |= SYMBOL_NO_WRITE; | |
229 | } | |
230 | ||
231 | void menu_add_option_allnoconfig_y(void) | |
232 | { | |
233 | current_entry->sym->flags |= SYMBOL_ALLNOCONFIG_Y; | |
f6a88aa8 RZ |
234 | } |
235 | ||
ab60bd0b | 236 | static int menu_validate_number(struct symbol *sym, struct symbol *sym2) |
4cf3cbe2 RZ |
237 | { |
238 | return sym2->type == S_INT || sym2->type == S_HEX || | |
239 | (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name)); | |
240 | } | |
241 | ||
4356f489 | 242 | static void sym_check_prop(struct symbol *sym) |
1da177e4 LT |
243 | { |
244 | struct property *prop; | |
245 | struct symbol *sym2; | |
237e3ad0 NP |
246 | char *use; |
247 | ||
1da177e4 LT |
248 | for (prop = sym->prop; prop; prop = prop->next) { |
249 | switch (prop->type) { | |
250 | case P_DEFAULT: | |
251 | if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) && | |
252 | prop->expr->type != E_SYMBOL) | |
253 | prop_warn(prop, | |
4280eae0 | 254 | "default for config symbol '%s'" |
1da177e4 | 255 | " must be a single symbol", sym->name); |
ab60bd0b AL |
256 | if (prop->expr->type != E_SYMBOL) |
257 | break; | |
258 | sym2 = prop_get_symbol(prop); | |
259 | if (sym->type == S_HEX || sym->type == S_INT) { | |
260 | if (!menu_validate_number(sym, sym2)) | |
261 | prop_warn(prop, | |
262 | "'%s': number is invalid", | |
263 | sym->name); | |
264 | } | |
2c37e084 UM |
265 | if (sym_is_choice(sym)) { |
266 | struct property *choice_prop = | |
267 | sym_get_choice_prop(sym2); | |
268 | ||
269 | if (!choice_prop || | |
270 | prop_get_symbol(choice_prop) != sym) | |
271 | prop_warn(prop, | |
272 | "choice default symbol '%s' is not contained in the choice", | |
273 | sym2->name); | |
274 | } | |
1da177e4 LT |
275 | break; |
276 | case P_SELECT: | |
237e3ad0 NP |
277 | case P_IMPLY: |
278 | use = prop->type == P_SELECT ? "select" : "imply"; | |
1da177e4 LT |
279 | sym2 = prop_get_symbol(prop); |
280 | if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE) | |
281 | prop_warn(prop, | |
237e3ad0 | 282 | "config symbol '%s' uses %s, but is " |
b92d804a | 283 | "not bool or tristate", sym->name, use); |
603d4988 | 284 | else if (sym2->type != S_UNKNOWN && |
bb66fc67 MY |
285 | sym2->type != S_BOOLEAN && |
286 | sym2->type != S_TRISTATE) | |
1da177e4 | 287 | prop_warn(prop, |
237e3ad0 | 288 | "'%s' has wrong type. '%s' only " |
b92d804a | 289 | "accept arguments of bool and " |
237e3ad0 | 290 | "tristate type", sym2->name, use); |
1da177e4 LT |
291 | break; |
292 | case P_RANGE: | |
293 | if (sym->type != S_INT && sym->type != S_HEX) | |
294 | prop_warn(prop, "range is only allowed " | |
bb66fc67 | 295 | "for int or hex symbols"); |
ab60bd0b AL |
296 | if (!menu_validate_number(sym, prop->expr->left.sym) || |
297 | !menu_validate_number(sym, prop->expr->right.sym)) | |
1da177e4 LT |
298 | prop_warn(prop, "range is invalid"); |
299 | break; | |
300 | default: | |
301 | ; | |
302 | } | |
303 | } | |
304 | } | |
305 | ||
306 | void menu_finalize(struct menu *parent) | |
307 | { | |
308 | struct menu *menu, *last_menu; | |
309 | struct symbol *sym; | |
310 | struct property *prop; | |
311 | struct expr *parentdep, *basedep, *dep, *dep2, **ep; | |
312 | ||
313 | sym = parent->sym; | |
314 | if (parent->list) { | |
fa8cedae UM |
315 | /* |
316 | * This menu node has children. We (recursively) process them | |
317 | * and propagate parent dependencies before moving on. | |
318 | */ | |
319 | ||
1da177e4 | 320 | if (sym && sym_is_choice(sym)) { |
5a1aa8a1 RZ |
321 | if (sym->type == S_UNKNOWN) { |
322 | /* find the first choice value to find out choice type */ | |
323 | current_entry = parent; | |
324 | for (menu = parent->list; menu; menu = menu->next) { | |
325 | if (menu->sym && menu->sym->type != S_UNKNOWN) { | |
f5eaa323 | 326 | menu_set_type(menu->sym->type); |
5a1aa8a1 RZ |
327 | break; |
328 | } | |
1da177e4 LT |
329 | } |
330 | } | |
5a1aa8a1 RZ |
331 | /* set the type of the remaining choice values */ |
332 | for (menu = parent->list; menu; menu = menu->next) { | |
333 | current_entry = menu; | |
334 | if (menu->sym && menu->sym->type == S_UNKNOWN) | |
335 | menu_set_type(sym->type); | |
336 | } | |
d3465af6 UM |
337 | |
338 | /* | |
339 | * Use the choice itself as the parent dependency of | |
340 | * the contained items. This turns the mode of the | |
341 | * choice into an upper bound on the visibility of the | |
342 | * choice value symbols. | |
343 | */ | |
1da177e4 | 344 | parentdep = expr_alloc_symbol(sym); |
de026ca9 MY |
345 | } else { |
346 | /* Menu node for 'menu', 'if' */ | |
1da177e4 | 347 | parentdep = parent->dep; |
de026ca9 | 348 | } |
1da177e4 | 349 | |
fa8cedae | 350 | /* For each child menu node... */ |
1da177e4 | 351 | for (menu = parent->list; menu; menu = menu->next) { |
fa8cedae UM |
352 | /* |
353 | * Propagate parent dependencies to the child menu | |
354 | * node, also rewriting and simplifying expressions | |
355 | */ | |
f77850d3 UM |
356 | basedep = rewrite_m(menu->dep); |
357 | basedep = expr_transform(basedep); | |
e8b8c977 | 358 | basedep = expr_alloc_and(expr_copy(parentdep), basedep); |
1da177e4 LT |
359 | basedep = expr_eliminate_dups(basedep); |
360 | menu->dep = basedep; | |
fa8cedae | 361 | |
1da177e4 | 362 | if (menu->sym) |
fa8cedae UM |
363 | /* |
364 | * Note: For symbols, all prompts are included | |
365 | * too in the symbol's own property list | |
366 | */ | |
1da177e4 LT |
367 | prop = menu->sym->prop; |
368 | else | |
fa8cedae UM |
369 | /* |
370 | * For non-symbol menu nodes, we just need to | |
371 | * handle the prompt | |
372 | */ | |
1da177e4 | 373 | prop = menu->prompt; |
fa8cedae UM |
374 | |
375 | /* For each property... */ | |
1da177e4 LT |
376 | for (; prop; prop = prop->next) { |
377 | if (prop->menu != menu) | |
fa8cedae UM |
378 | /* |
379 | * Two possibilities: | |
380 | * | |
381 | * 1. The property lacks dependencies | |
382 | * and so isn't location-specific, | |
383 | * e.g. an 'option' | |
384 | * | |
385 | * 2. The property belongs to a symbol | |
386 | * defined in multiple locations and | |
387 | * is from some other location. It | |
388 | * will be handled there in that | |
389 | * case. | |
390 | * | |
391 | * Skip the property. | |
392 | */ | |
1da177e4 | 393 | continue; |
fa8cedae UM |
394 | |
395 | /* | |
396 | * Propagate parent dependencies to the | |
397 | * property's condition, rewriting and | |
398 | * simplifying expressions at the same time | |
399 | */ | |
f77850d3 UM |
400 | dep = rewrite_m(prop->visible.expr); |
401 | dep = expr_transform(dep); | |
1da177e4 LT |
402 | dep = expr_alloc_and(expr_copy(basedep), dep); |
403 | dep = expr_eliminate_dups(dep); | |
404 | if (menu->sym && menu->sym->type != S_TRISTATE) | |
405 | dep = expr_trans_bool(dep); | |
406 | prop->visible.expr = dep; | |
fa8cedae UM |
407 | |
408 | /* | |
409 | * Handle selects and implies, which modify the | |
410 | * dependencies of the selected/implied symbol | |
411 | */ | |
1da177e4 LT |
412 | if (prop->type == P_SELECT) { |
413 | struct symbol *es = prop_get_symbol(prop); | |
414 | es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr, | |
415 | expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep))); | |
237e3ad0 NP |
416 | } else if (prop->type == P_IMPLY) { |
417 | struct symbol *es = prop_get_symbol(prop); | |
418 | es->implied.expr = expr_alloc_or(es->implied.expr, | |
419 | expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep))); | |
1da177e4 LT |
420 | } |
421 | } | |
422 | } | |
fa8cedae | 423 | |
7cf33f88 UM |
424 | if (sym && sym_is_choice(sym)) |
425 | expr_free(parentdep); | |
426 | ||
fa8cedae UM |
427 | /* |
428 | * Recursively process children in the same fashion before | |
429 | * moving on | |
430 | */ | |
1da177e4 LT |
431 | for (menu = parent->list; menu; menu = menu->next) |
432 | menu_finalize(menu); | |
433 | } else if (sym) { | |
05cccce5 UM |
434 | /* |
435 | * Automatic submenu creation. If sym is a symbol and A, B, C, | |
436 | * ... are consecutive items (symbols, menus, ifs, etc.) that | |
437 | * all depend on sym, then the following menu structure is | |
438 | * created: | |
439 | * | |
440 | * sym | |
441 | * +-A | |
442 | * +-B | |
443 | * +-C | |
444 | * ... | |
445 | * | |
446 | * This also works recursively, giving the following structure | |
447 | * if A is a symbol and B depends on A: | |
448 | * | |
449 | * sym | |
450 | * +-A | |
451 | * | +-B | |
452 | * +-C | |
453 | * ... | |
454 | */ | |
455 | ||
1da177e4 LT |
456 | basedep = parent->prompt ? parent->prompt->visible.expr : NULL; |
457 | basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no); | |
458 | basedep = expr_eliminate_dups(expr_transform(basedep)); | |
05cccce5 UM |
459 | |
460 | /* Examine consecutive elements after sym */ | |
1da177e4 LT |
461 | last_menu = NULL; |
462 | for (menu = parent->next; menu; menu = menu->next) { | |
463 | dep = menu->prompt ? menu->prompt->visible.expr : menu->dep; | |
464 | if (!expr_contains_symbol(dep, sym)) | |
05cccce5 | 465 | /* No dependency, quit */ |
1da177e4 LT |
466 | break; |
467 | if (expr_depends_symbol(dep, sym)) | |
05cccce5 | 468 | /* Absolute dependency, put in submenu */ |
1da177e4 | 469 | goto next; |
05cccce5 UM |
470 | |
471 | /* | |
472 | * Also consider it a dependency on sym if our | |
473 | * dependencies contain sym and are a "superset" of | |
474 | * sym's dependencies, e.g. '(sym || Q) && R' when sym | |
475 | * depends on R. | |
476 | * | |
477 | * Note that 'R' might be from an enclosing menu or if, | |
478 | * making this a more common case than it might seem. | |
479 | */ | |
1da177e4 LT |
480 | dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no); |
481 | dep = expr_eliminate_dups(expr_transform(dep)); | |
482 | dep2 = expr_copy(basedep); | |
483 | expr_eliminate_eq(&dep, &dep2); | |
484 | expr_free(dep); | |
485 | if (!expr_is_yes(dep2)) { | |
05cccce5 | 486 | /* Not superset, quit */ |
1da177e4 LT |
487 | expr_free(dep2); |
488 | break; | |
489 | } | |
05cccce5 | 490 | /* Superset, put in submenu */ |
1da177e4 LT |
491 | expr_free(dep2); |
492 | next: | |
493 | menu_finalize(menu); | |
494 | menu->parent = parent; | |
495 | last_menu = menu; | |
496 | } | |
ae7440ef | 497 | expr_free(basedep); |
1da177e4 LT |
498 | if (last_menu) { |
499 | parent->list = parent->next; | |
500 | parent->next = last_menu->next; | |
501 | last_menu->next = NULL; | |
502 | } | |
ff5ff606 | 503 | |
ec6452a5 | 504 | sym->dir_dep.expr = expr_alloc_or(sym->dir_dep.expr, parent->dep); |
1da177e4 LT |
505 | } |
506 | for (menu = parent->list; menu; menu = menu->next) { | |
5a1aa8a1 RZ |
507 | if (sym && sym_is_choice(sym) && |
508 | menu->sym && !sym_is_choice_value(menu->sym)) { | |
509 | current_entry = menu; | |
1da177e4 LT |
510 | menu->sym->flags |= SYMBOL_CHOICEVAL; |
511 | if (!menu->prompt) | |
512 | menu_warn(menu, "choice value must have a prompt"); | |
513 | for (prop = menu->sym->prop; prop; prop = prop->next) { | |
1da177e4 LT |
514 | if (prop->type == P_DEFAULT) |
515 | prop_warn(prop, "defaults for choice " | |
5a1aa8a1 RZ |
516 | "values not supported"); |
517 | if (prop->menu == menu) | |
518 | continue; | |
519 | if (prop->type == P_PROMPT && | |
520 | prop->menu->parent->sym != sym) | |
521 | prop_warn(prop, "choice value used outside its choice group"); | |
1da177e4 | 522 | } |
f5eaa323 JB |
523 | /* Non-tristate choice values of tristate choices must |
524 | * depend on the choice being set to Y. The choice | |
525 | * values' dependencies were propagated to their | |
526 | * properties above, so the change here must be re- | |
5a1aa8a1 RZ |
527 | * propagated. |
528 | */ | |
f5eaa323 JB |
529 | if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) { |
530 | basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes); | |
5a1aa8a1 | 531 | menu->dep = expr_alloc_and(basedep, menu->dep); |
f5eaa323 JB |
532 | for (prop = menu->sym->prop; prop; prop = prop->next) { |
533 | if (prop->menu != menu) | |
534 | continue; | |
5a1aa8a1 RZ |
535 | prop->visible.expr = expr_alloc_and(expr_copy(basedep), |
536 | prop->visible.expr); | |
f5eaa323 JB |
537 | } |
538 | } | |
1da177e4 LT |
539 | menu_add_symbol(P_CHOICE, sym, NULL); |
540 | prop = sym_get_choice_prop(sym); | |
541 | for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr) | |
542 | ; | |
7a962923 | 543 | *ep = expr_alloc_one(E_LIST, NULL); |
1da177e4 LT |
544 | (*ep)->right.sym = menu->sym; |
545 | } | |
9d1a9e8b UM |
546 | |
547 | /* | |
548 | * This code serves two purposes: | |
549 | * | |
550 | * (1) Flattening 'if' blocks, which do not specify a submenu | |
551 | * and only add dependencies. | |
552 | * | |
553 | * (Automatic submenu creation might still create a submenu | |
554 | * from an 'if' before this code runs.) | |
555 | * | |
556 | * (2) "Undoing" any automatic submenus created earlier below | |
557 | * promptless symbols. | |
558 | * | |
559 | * Before: | |
560 | * | |
561 | * A | |
562 | * if ... (or promptless symbol) | |
563 | * +-B | |
564 | * +-C | |
565 | * D | |
566 | * | |
567 | * After: | |
568 | * | |
569 | * A | |
570 | * if ... (or promptless symbol) | |
571 | * B | |
572 | * C | |
573 | * D | |
574 | */ | |
1da177e4 LT |
575 | if (menu->list && (!menu->prompt || !menu->prompt->text)) { |
576 | for (last_menu = menu->list; ; last_menu = last_menu->next) { | |
577 | last_menu->parent = parent; | |
578 | if (!last_menu->next) | |
579 | break; | |
580 | } | |
581 | last_menu->next = menu->next; | |
582 | menu->next = menu->list; | |
583 | menu->list = NULL; | |
584 | } | |
585 | } | |
586 | ||
587 | if (sym && !(sym->flags & SYMBOL_WARNED)) { | |
588 | if (sym->type == S_UNKNOWN) | |
f001f7f8 | 589 | menu_warn(parent, "config symbol defined without type"); |
1da177e4 LT |
590 | |
591 | if (sym_is_choice(sym) && !parent->prompt) | |
f001f7f8 | 592 | menu_warn(parent, "choice must have a prompt"); |
1da177e4 LT |
593 | |
594 | /* Check properties connected to this symbol */ | |
595 | sym_check_prop(sym); | |
596 | sym->flags |= SYMBOL_WARNED; | |
597 | } | |
598 | ||
3e41ba05 UM |
599 | /* |
600 | * For non-optional choices, add a reverse dependency (corresponding to | |
601 | * a select) of '<visibility> && m'. This prevents the user from | |
602 | * setting the choice mode to 'n' when the choice is visible. | |
603 | * | |
604 | * This would also work for non-choice symbols, but only non-optional | |
605 | * choices clear SYMBOL_OPTIONAL as of writing. Choices are implemented | |
606 | * as a type of symbol. | |
607 | */ | |
1da177e4 LT |
608 | if (sym && !sym_is_optional(sym) && parent->prompt) { |
609 | sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr, | |
610 | expr_alloc_and(parent->prompt->visible.expr, | |
611 | expr_alloc_symbol(&symbol_mod))); | |
612 | } | |
613 | } | |
614 | ||
22c7eca6 LZ |
615 | bool menu_has_prompt(struct menu *menu) |
616 | { | |
617 | if (!menu->prompt) | |
618 | return false; | |
619 | return true; | |
620 | } | |
621 | ||
1278ebdb DG |
622 | /* |
623 | * Determine if a menu is empty. | |
624 | * A menu is considered empty if it contains no or only | |
625 | * invisible entries. | |
626 | */ | |
627 | bool menu_is_empty(struct menu *menu) | |
628 | { | |
629 | struct menu *child; | |
630 | ||
631 | for (child = menu->list; child; child = child->next) { | |
632 | if (menu_is_visible(child)) | |
633 | return(false); | |
634 | } | |
635 | return(true); | |
636 | } | |
637 | ||
1da177e4 LT |
638 | bool menu_is_visible(struct menu *menu) |
639 | { | |
640 | struct menu *child; | |
641 | struct symbol *sym; | |
642 | tristate visible; | |
643 | ||
644 | if (!menu->prompt) | |
645 | return false; | |
22c7eca6 | 646 | |
86e187ff AL |
647 | if (menu->visibility) { |
648 | if (expr_calc_value(menu->visibility) == no) | |
aab24a89 | 649 | return false; |
86e187ff AL |
650 | } |
651 | ||
1da177e4 LT |
652 | sym = menu->sym; |
653 | if (sym) { | |
654 | sym_calc_value(sym); | |
655 | visible = menu->prompt->visible.tri; | |
656 | } else | |
657 | visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr); | |
658 | ||
659 | if (visible != no) | |
660 | return true; | |
22c7eca6 | 661 | |
1da177e4 LT |
662 | if (!sym || sym_get_tristate_value(menu->sym) == no) |
663 | return false; | |
664 | ||
3fb9acb3 LZ |
665 | for (child = menu->list; child; child = child->next) { |
666 | if (menu_is_visible(child)) { | |
667 | if (sym) | |
668 | sym->flags |= SYMBOL_DEF_USER; | |
1da177e4 | 669 | return true; |
3fb9acb3 LZ |
670 | } |
671 | } | |
22c7eca6 | 672 | |
1da177e4 LT |
673 | return false; |
674 | } | |
675 | ||
676 | const char *menu_get_prompt(struct menu *menu) | |
677 | { | |
678 | if (menu->prompt) | |
01771b0f | 679 | return menu->prompt->text; |
1da177e4 | 680 | else if (menu->sym) |
01771b0f | 681 | return menu->sym->name; |
1da177e4 LT |
682 | return NULL; |
683 | } | |
684 | ||
685 | struct menu *menu_get_root_menu(struct menu *menu) | |
686 | { | |
687 | return &rootmenu; | |
688 | } | |
689 | ||
690 | struct menu *menu_get_parent_menu(struct menu *menu) | |
691 | { | |
692 | enum prop_type type; | |
693 | ||
694 | for (; menu != &rootmenu; menu = menu->parent) { | |
695 | type = menu->prompt ? menu->prompt->type : 0; | |
696 | if (type == P_MENU) | |
697 | break; | |
698 | } | |
699 | return menu; | |
700 | } | |
701 | ||
03d29122 SR |
702 | bool menu_has_help(struct menu *menu) |
703 | { | |
704 | return menu->help != NULL; | |
705 | } | |
706 | ||
707 | const char *menu_get_help(struct menu *menu) | |
708 | { | |
709 | if (menu->help) | |
710 | return menu->help; | |
711 | else | |
712 | return ""; | |
713 | } | |
6bd5999d | 714 | |
edda15f2 TH |
715 | static void get_def_str(struct gstr *r, struct menu *menu) |
716 | { | |
717 | str_printf(r, "Defined at %s:%d\n", | |
718 | menu->file->name, menu->lineno); | |
719 | } | |
720 | ||
721 | static void get_dep_str(struct gstr *r, struct expr *expr, const char *prefix) | |
722 | { | |
723 | if (!expr_is_yes(expr)) { | |
724 | str_append(r, prefix); | |
725 | expr_gstr_print(expr, r); | |
726 | str_append(r, "\n"); | |
727 | } | |
728 | } | |
729 | ||
95ac9b3b | 730 | static void get_prompt_str(struct gstr *r, struct property *prop, |
bad9955d | 731 | struct list_head *head) |
6bd5999d CR |
732 | { |
733 | int i, j; | |
5e609add | 734 | struct menu *submenu[8], *menu, *location = NULL; |
2d560306 | 735 | struct jump_key *jump = NULL; |
6bd5999d | 736 | |
edda15f2 TH |
737 | str_printf(r, " Prompt: %s\n", prop->text); |
738 | ||
739 | get_dep_str(r, prop->menu->dep, " Depends on: "); | |
3460d0bc TH |
740 | /* |
741 | * Most prompts in Linux have visibility that exactly matches their | |
742 | * dependencies. For these, we print only the dependencies to improve | |
743 | * readability. However, prompts with inline "if" expressions and | |
744 | * prompts with a parent that has a "visible if" expression have | |
745 | * differing dependencies and visibility. In these rare cases, we | |
746 | * print both. | |
747 | */ | |
748 | if (!expr_eq(prop->menu->dep, prop->visible.expr)) | |
749 | get_dep_str(r, prop->visible.expr, " Visible if: "); | |
750 | ||
6bd5999d | 751 | menu = prop->menu->parent; |
5e609add BP |
752 | for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) { |
753 | bool accessible = menu_is_visible(menu); | |
754 | ||
6bd5999d | 755 | submenu[i++] = menu; |
5e609add BP |
756 | if (location == NULL && accessible) |
757 | location = menu; | |
758 | } | |
95ac9b3b | 759 | if (head && location) { |
177acf78 | 760 | jump = xmalloc(sizeof(struct jump_key)); |
95ac9b3b | 761 | |
5e609add BP |
762 | if (menu_is_visible(prop->menu)) { |
763 | /* | |
764 | * There is not enough room to put the hint at the | |
765 | * beginning of the "Prompt" line. Put the hint on the | |
766 | * last "Location" line even when it would belong on | |
767 | * the former. | |
768 | */ | |
95ac9b3b | 769 | jump->target = prop->menu; |
5e609add | 770 | } else |
95ac9b3b BP |
771 | jump->target = location; |
772 | ||
bad9955d | 773 | if (list_empty(head)) |
95ac9b3b BP |
774 | jump->index = 0; |
775 | else | |
bad9955d BP |
776 | jump->index = list_entry(head->prev, struct jump_key, |
777 | entries)->index + 1; | |
95ac9b3b | 778 | |
bad9955d | 779 | list_add_tail(&jump->entries, head); |
95ac9b3b | 780 | } |
5e609add | 781 | |
6bd5999d | 782 | if (i > 0) { |
694c49a7 | 783 | str_printf(r, " Location:\n"); |
95ac9b3b | 784 | for (j = 4; --i >= 0; j += 2) { |
6bd5999d | 785 | menu = submenu[i]; |
2d560306 | 786 | if (jump && menu == location) |
503c8230 | 787 | jump->offset = strlen(r->s); |
95ac9b3b | 788 | str_printf(r, "%*c-> %s", j, ' ', |
694c49a7 | 789 | menu_get_prompt(menu)); |
6bd5999d CR |
790 | if (menu->sym) { |
791 | str_printf(r, " (%s [=%s])", menu->sym->name ? | |
694c49a7 | 792 | menu->sym->name : "<choice>", |
6bd5999d CR |
793 | sym_get_string_value(menu->sym)); |
794 | } | |
795 | str_append(r, "\n"); | |
796 | } | |
797 | } | |
798 | } | |
799 | ||
237e3ad0 NP |
800 | static void get_symbol_props_str(struct gstr *r, struct symbol *sym, |
801 | enum prop_type tok, const char *prefix) | |
802 | { | |
803 | bool hit = false; | |
804 | struct property *prop; | |
805 | ||
806 | for_all_properties(sym, prop, tok) { | |
807 | if (!hit) { | |
808 | str_append(r, prefix); | |
809 | hit = true; | |
810 | } else | |
811 | str_printf(r, " && "); | |
812 | expr_gstr_print(prop->expr, r); | |
813 | } | |
814 | if (hit) | |
815 | str_append(r, "\n"); | |
816 | } | |
817 | ||
5e609add | 818 | /* |
95ac9b3b | 819 | * head is optional and may be NULL |
5e609add | 820 | */ |
ad8d40cd | 821 | static void get_symbol_str(struct gstr *r, struct symbol *sym, |
bad9955d | 822 | struct list_head *head) |
6bd5999d | 823 | { |
6bd5999d CR |
824 | struct property *prop; |
825 | ||
b040b44c | 826 | if (sym && sym->name) { |
6bd5999d CR |
827 | str_printf(r, "Symbol: %s [=%s]\n", sym->name, |
828 | sym_get_string_value(sym)); | |
b040b44c | 829 | str_printf(r, "Type : %s\n", sym_type_name(sym->type)); |
70ed0747 LZ |
830 | if (sym->type == S_INT || sym->type == S_HEX) { |
831 | prop = sym_get_range_prop(sym); | |
832 | if (prop) { | |
833 | str_printf(r, "Range : "); | |
834 | expr_gstr_print(prop->expr, r); | |
835 | str_append(r, "\n"); | |
836 | } | |
837 | } | |
b040b44c | 838 | } |
edda15f2 TH |
839 | |
840 | /* Print the definitions with prompts before the ones without */ | |
841 | for_all_properties(sym, prop, P_SYMBOL) { | |
842 | if (prop->menu->prompt) { | |
843 | get_def_str(r, prop->menu); | |
844 | get_prompt_str(r, prop->menu->prompt, head); | |
845 | } | |
846 | } | |
847 | ||
848 | for_all_properties(sym, prop, P_SYMBOL) { | |
849 | if (!prop->menu->prompt) { | |
850 | get_def_str(r, prop->menu); | |
851 | get_dep_str(r, prop->menu->dep, " Depends on: "); | |
383da76f | 852 | } |
bcdedcc1 | 853 | } |
383da76f | 854 | |
a9609686 | 855 | get_symbol_props_str(r, sym, P_SELECT, "Selects: "); |
6bd5999d | 856 | if (sym->rev_dep.expr) { |
a9609686 TH |
857 | expr_gstr_print_revdep(sym->rev_dep.expr, r, yes, "Selected by [y]:\n"); |
858 | expr_gstr_print_revdep(sym->rev_dep.expr, r, mod, "Selected by [m]:\n"); | |
859 | expr_gstr_print_revdep(sym->rev_dep.expr, r, no, "Selected by [n]:\n"); | |
6bd5999d | 860 | } |
237e3ad0 | 861 | |
a9609686 | 862 | get_symbol_props_str(r, sym, P_IMPLY, "Implies: "); |
237e3ad0 | 863 | if (sym->implied.expr) { |
a9609686 TH |
864 | expr_gstr_print_revdep(sym->implied.expr, r, yes, "Implied by [y]:\n"); |
865 | expr_gstr_print_revdep(sym->implied.expr, r, mod, "Implied by [m]:\n"); | |
866 | expr_gstr_print_revdep(sym->implied.expr, r, no, "Implied by [n]:\n"); | |
237e3ad0 NP |
867 | } |
868 | ||
6bd5999d CR |
869 | str_append(r, "\n\n"); |
870 | } | |
871 | ||
bad9955d | 872 | struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head) |
692d97c3 | 873 | { |
874 | struct symbol *sym; | |
875 | struct gstr res = str_new(); | |
95ac9b3b | 876 | int i; |
692d97c3 | 877 | |
878 | for (i = 0; sym_arr && (sym = sym_arr[i]); i++) | |
95ac9b3b | 879 | get_symbol_str(&res, sym, head); |
692d97c3 | 880 | if (!i) |
694c49a7 | 881 | str_append(&res, "No matches found.\n"); |
692d97c3 | 882 | return res; |
883 | } | |
884 | ||
885 | ||
6bd5999d CR |
886 | void menu_get_ext_help(struct menu *menu, struct gstr *help) |
887 | { | |
888 | struct symbol *sym = menu->sym; | |
57e6292d | 889 | const char *help_text = nohelp_text; |
6bd5999d CR |
890 | |
891 | if (menu_has_help(menu)) { | |
3f198dfe | 892 | if (sym->name) |
ffb5957b | 893 | str_printf(help, "%s%s:\n\n", CONFIG_, sym->name); |
57e6292d | 894 | help_text = menu_get_help(menu); |
6bd5999d | 895 | } |
694c49a7 | 896 | str_printf(help, "%s\n", help_text); |
4779105e | 897 | if (sym) |
95ac9b3b | 898 | get_symbol_str(help, sym, NULL); |
6bd5999d | 899 | } |