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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 | 11 | #include "lkc.h" |
a77a05dc | 12 | #include "internal.h" |
1da177e4 | 13 | |
57e6292d | 14 | static const char nohelp_text[] = "There is no help available for this option."; |
6bd5999d | 15 | |
1da177e4 LT |
16 | struct menu rootmenu; |
17 | static struct menu **last_entry_ptr; | |
18 | ||
19 | struct file *file_list; | |
20 | struct file *current_file; | |
21 | ||
93449082 | 22 | void menu_warn(struct menu *menu, const char *fmt, ...) |
1da177e4 LT |
23 | { |
24 | va_list ap; | |
25 | va_start(ap, fmt); | |
26 | fprintf(stderr, "%s:%d:warning: ", menu->file->name, menu->lineno); | |
27 | vfprintf(stderr, fmt, ap); | |
28 | fprintf(stderr, "\n"); | |
29 | va_end(ap); | |
30 | } | |
31 | ||
32 | static void prop_warn(struct property *prop, const char *fmt, ...) | |
33 | { | |
34 | va_list ap; | |
35 | va_start(ap, fmt); | |
36 | fprintf(stderr, "%s:%d:warning: ", prop->file->name, prop->lineno); | |
37 | vfprintf(stderr, fmt, ap); | |
38 | fprintf(stderr, "\n"); | |
39 | va_end(ap); | |
40 | } | |
41 | ||
692d97c3 | 42 | void _menu_init(void) |
1da177e4 LT |
43 | { |
44 | current_entry = current_menu = &rootmenu; | |
45 | last_entry_ptr = &rootmenu.list; | |
46 | } | |
47 | ||
48 | void menu_add_entry(struct symbol *sym) | |
49 | { | |
50 | struct menu *menu; | |
51 | ||
177acf78 | 52 | menu = xmalloc(sizeof(*menu)); |
1da177e4 LT |
53 | memset(menu, 0, sizeof(*menu)); |
54 | menu->sym = sym; | |
55 | menu->parent = current_menu; | |
56 | menu->file = current_file; | |
57 | menu->lineno = zconf_lineno(); | |
58 | ||
59 | *last_entry_ptr = menu; | |
60 | last_entry_ptr = &menu->next; | |
61 | current_entry = menu; | |
59e89e3d SR |
62 | if (sym) |
63 | menu_add_symbol(P_SYMBOL, sym, NULL); | |
1da177e4 LT |
64 | } |
65 | ||
a02f0570 | 66 | struct menu *menu_add_menu(void) |
1da177e4 | 67 | { |
1da177e4 | 68 | last_entry_ptr = ¤t_entry->list; |
644a4b6c MY |
69 | current_menu = current_entry; |
70 | return current_menu; | |
1da177e4 LT |
71 | } |
72 | ||
73 | void menu_end_menu(void) | |
74 | { | |
75 | last_entry_ptr = ¤t_menu->next; | |
76 | current_menu = current_menu->parent; | |
77 | } | |
78 | ||
9a826842 UM |
79 | /* |
80 | * Rewrites 'm' to 'm' && MODULES, so that it evaluates to 'n' when running | |
81 | * without modules | |
82 | */ | |
83 | static struct expr *rewrite_m(struct expr *e) | |
1da177e4 LT |
84 | { |
85 | if (!e) | |
86 | return e; | |
87 | ||
88 | switch (e->type) { | |
89 | case E_NOT: | |
9a826842 | 90 | e->left.expr = rewrite_m(e->left.expr); |
1da177e4 LT |
91 | break; |
92 | case E_OR: | |
93 | case E_AND: | |
9a826842 UM |
94 | e->left.expr = rewrite_m(e->left.expr); |
95 | e->right.expr = rewrite_m(e->right.expr); | |
1da177e4 LT |
96 | break; |
97 | case E_SYMBOL: | |
98 | /* change 'm' into 'm' && MODULES */ | |
99 | if (e->left.sym == &symbol_mod) | |
100 | return expr_alloc_and(e, expr_alloc_symbol(modules_sym)); | |
101 | break; | |
102 | default: | |
103 | break; | |
104 | } | |
105 | return e; | |
106 | } | |
107 | ||
108 | void menu_add_dep(struct expr *dep) | |
109 | { | |
f77850d3 | 110 | current_entry->dep = expr_alloc_and(current_entry->dep, dep); |
1da177e4 LT |
111 | } |
112 | ||
113 | void menu_set_type(int type) | |
114 | { | |
115 | struct symbol *sym = current_entry->sym; | |
116 | ||
117 | if (sym->type == type) | |
118 | return; | |
119 | if (sym->type == S_UNKNOWN) { | |
120 | sym->type = type; | |
121 | return; | |
122 | } | |
57540f1d MW |
123 | menu_warn(current_entry, |
124 | "ignoring type redefinition of '%s' from '%s' to '%s'", | |
125 | sym->name ? sym->name : "<choice>", | |
126 | sym_type_name(sym->type), sym_type_name(type)); | |
1da177e4 LT |
127 | } |
128 | ||
2ffeef61 MY |
129 | static struct property *menu_add_prop(enum prop_type type, struct expr *expr, |
130 | struct expr *dep) | |
1da177e4 | 131 | { |
adf7c5bd | 132 | struct property *prop; |
1da177e4 | 133 | |
adf7c5bd MY |
134 | prop = xmalloc(sizeof(*prop)); |
135 | memset(prop, 0, sizeof(*prop)); | |
136 | prop->type = type; | |
137 | prop->file = current_file; | |
138 | prop->lineno = zconf_lineno(); | |
1da177e4 | 139 | prop->menu = current_entry; |
1da177e4 | 140 | prop->expr = expr; |
f77850d3 | 141 | prop->visible.expr = dep; |
1da177e4 | 142 | |
adf7c5bd MY |
143 | /* append property to the prop list of symbol */ |
144 | if (current_entry->sym) { | |
145 | struct property **propp; | |
146 | ||
147 | for (propp = ¤t_entry->sym->prop; | |
148 | *propp; | |
149 | propp = &(*propp)->next) | |
150 | ; | |
151 | *propp = prop; | |
152 | } | |
153 | ||
024352ff MY |
154 | return prop; |
155 | } | |
156 | ||
157 | struct property *menu_add_prompt(enum prop_type type, char *prompt, | |
158 | struct expr *dep) | |
159 | { | |
2ffeef61 | 160 | struct property *prop = menu_add_prop(type, NULL, dep); |
7ad12278 | 161 | |
024352ff MY |
162 | if (isspace(*prompt)) { |
163 | prop_warn(prop, "leading whitespace ignored"); | |
164 | while (isspace(*prompt)) | |
165 | prompt++; | |
1da177e4 | 166 | } |
024352ff MY |
167 | if (current_entry->prompt) |
168 | prop_warn(prop, "prompt redefined"); | |
169 | ||
170 | /* Apply all upper menus' visibilities to actual prompts. */ | |
171 | if (type == P_PROMPT) { | |
172 | struct menu *menu = current_entry; | |
173 | ||
174 | while ((menu = menu->parent) != NULL) { | |
175 | struct expr *dup_expr; | |
176 | ||
177 | if (!menu->visibility) | |
178 | continue; | |
179 | /* | |
180 | * Do not add a reference to the menu's visibility | |
181 | * expression but use a copy of it. Otherwise the | |
182 | * expression reduction functions will modify | |
183 | * expressions that have multiple references which | |
184 | * can cause unwanted side effects. | |
185 | */ | |
186 | dup_expr = expr_copy(menu->visibility); | |
187 | ||
188 | prop->visible.expr = expr_alloc_and(prop->visible.expr, | |
189 | dup_expr); | |
190 | } | |
191 | } | |
192 | ||
193 | current_entry->prompt = prop; | |
f001f7f8 | 194 | prop->text = prompt; |
1da177e4 LT |
195 | |
196 | return prop; | |
197 | } | |
198 | ||
86e187ff AL |
199 | void menu_add_visibility(struct expr *expr) |
200 | { | |
201 | current_entry->visibility = expr_alloc_and(current_entry->visibility, | |
202 | expr); | |
203 | } | |
204 | ||
1da177e4 LT |
205 | void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep) |
206 | { | |
2ffeef61 | 207 | menu_add_prop(type, expr, dep); |
1da177e4 LT |
208 | } |
209 | ||
210 | void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep) | |
211 | { | |
2ffeef61 | 212 | menu_add_prop(type, expr_alloc_symbol(sym), dep); |
1da177e4 LT |
213 | } |
214 | ||
ab60bd0b | 215 | static int menu_validate_number(struct symbol *sym, struct symbol *sym2) |
4cf3cbe2 RZ |
216 | { |
217 | return sym2->type == S_INT || sym2->type == S_HEX || | |
218 | (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name)); | |
219 | } | |
220 | ||
4356f489 | 221 | static void sym_check_prop(struct symbol *sym) |
1da177e4 LT |
222 | { |
223 | struct property *prop; | |
224 | struct symbol *sym2; | |
237e3ad0 NP |
225 | char *use; |
226 | ||
1da177e4 LT |
227 | for (prop = sym->prop; prop; prop = prop->next) { |
228 | switch (prop->type) { | |
229 | case P_DEFAULT: | |
230 | if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) && | |
231 | prop->expr->type != E_SYMBOL) | |
232 | prop_warn(prop, | |
4280eae0 | 233 | "default for config symbol '%s'" |
1da177e4 | 234 | " must be a single symbol", sym->name); |
ab60bd0b AL |
235 | if (prop->expr->type != E_SYMBOL) |
236 | break; | |
237 | sym2 = prop_get_symbol(prop); | |
238 | if (sym->type == S_HEX || sym->type == S_INT) { | |
239 | if (!menu_validate_number(sym, sym2)) | |
240 | prop_warn(prop, | |
241 | "'%s': number is invalid", | |
242 | sym->name); | |
243 | } | |
2c37e084 UM |
244 | if (sym_is_choice(sym)) { |
245 | struct property *choice_prop = | |
246 | sym_get_choice_prop(sym2); | |
247 | ||
248 | if (!choice_prop || | |
249 | prop_get_symbol(choice_prop) != sym) | |
250 | prop_warn(prop, | |
251 | "choice default symbol '%s' is not contained in the choice", | |
252 | sym2->name); | |
253 | } | |
1da177e4 LT |
254 | break; |
255 | case P_SELECT: | |
237e3ad0 NP |
256 | case P_IMPLY: |
257 | use = prop->type == P_SELECT ? "select" : "imply"; | |
1da177e4 LT |
258 | sym2 = prop_get_symbol(prop); |
259 | if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE) | |
260 | prop_warn(prop, | |
237e3ad0 | 261 | "config symbol '%s' uses %s, but is " |
b92d804a | 262 | "not bool or tristate", sym->name, use); |
603d4988 | 263 | else if (sym2->type != S_UNKNOWN && |
bb66fc67 MY |
264 | sym2->type != S_BOOLEAN && |
265 | sym2->type != S_TRISTATE) | |
1da177e4 | 266 | prop_warn(prop, |
237e3ad0 | 267 | "'%s' has wrong type. '%s' only " |
b92d804a | 268 | "accept arguments of bool and " |
237e3ad0 | 269 | "tristate type", sym2->name, use); |
1da177e4 LT |
270 | break; |
271 | case P_RANGE: | |
272 | if (sym->type != S_INT && sym->type != S_HEX) | |
273 | prop_warn(prop, "range is only allowed " | |
bb66fc67 | 274 | "for int or hex symbols"); |
ab60bd0b AL |
275 | if (!menu_validate_number(sym, prop->expr->left.sym) || |
276 | !menu_validate_number(sym, prop->expr->right.sym)) | |
1da177e4 LT |
277 | prop_warn(prop, "range is invalid"); |
278 | break; | |
279 | default: | |
280 | ; | |
281 | } | |
282 | } | |
283 | } | |
284 | ||
285 | void menu_finalize(struct menu *parent) | |
286 | { | |
287 | struct menu *menu, *last_menu; | |
288 | struct symbol *sym; | |
289 | struct property *prop; | |
290 | struct expr *parentdep, *basedep, *dep, *dep2, **ep; | |
291 | ||
292 | sym = parent->sym; | |
293 | if (parent->list) { | |
fa8cedae UM |
294 | /* |
295 | * This menu node has children. We (recursively) process them | |
296 | * and propagate parent dependencies before moving on. | |
297 | */ | |
298 | ||
1da177e4 | 299 | if (sym && sym_is_choice(sym)) { |
5a1aa8a1 RZ |
300 | if (sym->type == S_UNKNOWN) { |
301 | /* find the first choice value to find out choice type */ | |
302 | current_entry = parent; | |
303 | for (menu = parent->list; menu; menu = menu->next) { | |
304 | if (menu->sym && menu->sym->type != S_UNKNOWN) { | |
f5eaa323 | 305 | menu_set_type(menu->sym->type); |
5a1aa8a1 RZ |
306 | break; |
307 | } | |
1da177e4 LT |
308 | } |
309 | } | |
5a1aa8a1 RZ |
310 | /* set the type of the remaining choice values */ |
311 | for (menu = parent->list; menu; menu = menu->next) { | |
312 | current_entry = menu; | |
313 | if (menu->sym && menu->sym->type == S_UNKNOWN) | |
314 | menu_set_type(sym->type); | |
315 | } | |
d3465af6 UM |
316 | |
317 | /* | |
318 | * Use the choice itself as the parent dependency of | |
319 | * the contained items. This turns the mode of the | |
320 | * choice into an upper bound on the visibility of the | |
321 | * choice value symbols. | |
322 | */ | |
1da177e4 | 323 | parentdep = expr_alloc_symbol(sym); |
de026ca9 MY |
324 | } else { |
325 | /* Menu node for 'menu', 'if' */ | |
1da177e4 | 326 | parentdep = parent->dep; |
de026ca9 | 327 | } |
1da177e4 | 328 | |
fa8cedae | 329 | /* For each child menu node... */ |
1da177e4 | 330 | for (menu = parent->list; menu; menu = menu->next) { |
fa8cedae UM |
331 | /* |
332 | * Propagate parent dependencies to the child menu | |
333 | * node, also rewriting and simplifying expressions | |
334 | */ | |
f77850d3 UM |
335 | basedep = rewrite_m(menu->dep); |
336 | basedep = expr_transform(basedep); | |
e8b8c977 | 337 | basedep = expr_alloc_and(expr_copy(parentdep), basedep); |
1da177e4 LT |
338 | basedep = expr_eliminate_dups(basedep); |
339 | menu->dep = basedep; | |
fa8cedae | 340 | |
1da177e4 | 341 | if (menu->sym) |
fa8cedae UM |
342 | /* |
343 | * Note: For symbols, all prompts are included | |
344 | * too in the symbol's own property list | |
345 | */ | |
1da177e4 LT |
346 | prop = menu->sym->prop; |
347 | else | |
fa8cedae UM |
348 | /* |
349 | * For non-symbol menu nodes, we just need to | |
350 | * handle the prompt | |
351 | */ | |
1da177e4 | 352 | prop = menu->prompt; |
fa8cedae UM |
353 | |
354 | /* For each property... */ | |
1da177e4 LT |
355 | for (; prop; prop = prop->next) { |
356 | if (prop->menu != menu) | |
fa8cedae UM |
357 | /* |
358 | * Two possibilities: | |
359 | * | |
360 | * 1. The property lacks dependencies | |
361 | * and so isn't location-specific, | |
362 | * e.g. an 'option' | |
363 | * | |
364 | * 2. The property belongs to a symbol | |
365 | * defined in multiple locations and | |
366 | * is from some other location. It | |
367 | * will be handled there in that | |
368 | * case. | |
369 | * | |
370 | * Skip the property. | |
371 | */ | |
1da177e4 | 372 | continue; |
fa8cedae UM |
373 | |
374 | /* | |
375 | * Propagate parent dependencies to the | |
376 | * property's condition, rewriting and | |
377 | * simplifying expressions at the same time | |
378 | */ | |
f77850d3 UM |
379 | dep = rewrite_m(prop->visible.expr); |
380 | dep = expr_transform(dep); | |
1da177e4 LT |
381 | dep = expr_alloc_and(expr_copy(basedep), dep); |
382 | dep = expr_eliminate_dups(dep); | |
383 | if (menu->sym && menu->sym->type != S_TRISTATE) | |
384 | dep = expr_trans_bool(dep); | |
385 | prop->visible.expr = dep; | |
fa8cedae UM |
386 | |
387 | /* | |
388 | * Handle selects and implies, which modify the | |
389 | * dependencies of the selected/implied symbol | |
390 | */ | |
1da177e4 LT |
391 | if (prop->type == P_SELECT) { |
392 | struct symbol *es = prop_get_symbol(prop); | |
393 | es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr, | |
394 | expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep))); | |
237e3ad0 NP |
395 | } else if (prop->type == P_IMPLY) { |
396 | struct symbol *es = prop_get_symbol(prop); | |
397 | es->implied.expr = expr_alloc_or(es->implied.expr, | |
398 | expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep))); | |
1da177e4 LT |
399 | } |
400 | } | |
401 | } | |
fa8cedae | 402 | |
7cf33f88 UM |
403 | if (sym && sym_is_choice(sym)) |
404 | expr_free(parentdep); | |
405 | ||
fa8cedae UM |
406 | /* |
407 | * Recursively process children in the same fashion before | |
408 | * moving on | |
409 | */ | |
1da177e4 LT |
410 | for (menu = parent->list; menu; menu = menu->next) |
411 | menu_finalize(menu); | |
412 | } else if (sym) { | |
05cccce5 UM |
413 | /* |
414 | * Automatic submenu creation. If sym is a symbol and A, B, C, | |
415 | * ... are consecutive items (symbols, menus, ifs, etc.) that | |
416 | * all depend on sym, then the following menu structure is | |
417 | * created: | |
418 | * | |
419 | * sym | |
420 | * +-A | |
421 | * +-B | |
422 | * +-C | |
423 | * ... | |
424 | * | |
425 | * This also works recursively, giving the following structure | |
426 | * if A is a symbol and B depends on A: | |
427 | * | |
428 | * sym | |
429 | * +-A | |
430 | * | +-B | |
431 | * +-C | |
432 | * ... | |
433 | */ | |
434 | ||
1da177e4 LT |
435 | basedep = parent->prompt ? parent->prompt->visible.expr : NULL; |
436 | basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no); | |
437 | basedep = expr_eliminate_dups(expr_transform(basedep)); | |
05cccce5 UM |
438 | |
439 | /* Examine consecutive elements after sym */ | |
1da177e4 LT |
440 | last_menu = NULL; |
441 | for (menu = parent->next; menu; menu = menu->next) { | |
442 | dep = menu->prompt ? menu->prompt->visible.expr : menu->dep; | |
443 | if (!expr_contains_symbol(dep, sym)) | |
05cccce5 | 444 | /* No dependency, quit */ |
1da177e4 LT |
445 | break; |
446 | if (expr_depends_symbol(dep, sym)) | |
05cccce5 | 447 | /* Absolute dependency, put in submenu */ |
1da177e4 | 448 | goto next; |
05cccce5 UM |
449 | |
450 | /* | |
451 | * Also consider it a dependency on sym if our | |
452 | * dependencies contain sym and are a "superset" of | |
453 | * sym's dependencies, e.g. '(sym || Q) && R' when sym | |
454 | * depends on R. | |
455 | * | |
456 | * Note that 'R' might be from an enclosing menu or if, | |
457 | * making this a more common case than it might seem. | |
458 | */ | |
1da177e4 LT |
459 | dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no); |
460 | dep = expr_eliminate_dups(expr_transform(dep)); | |
461 | dep2 = expr_copy(basedep); | |
462 | expr_eliminate_eq(&dep, &dep2); | |
463 | expr_free(dep); | |
464 | if (!expr_is_yes(dep2)) { | |
05cccce5 | 465 | /* Not superset, quit */ |
1da177e4 LT |
466 | expr_free(dep2); |
467 | break; | |
468 | } | |
05cccce5 | 469 | /* Superset, put in submenu */ |
1da177e4 LT |
470 | expr_free(dep2); |
471 | next: | |
472 | menu_finalize(menu); | |
473 | menu->parent = parent; | |
474 | last_menu = menu; | |
475 | } | |
ae7440ef | 476 | expr_free(basedep); |
1da177e4 LT |
477 | if (last_menu) { |
478 | parent->list = parent->next; | |
479 | parent->next = last_menu->next; | |
480 | last_menu->next = NULL; | |
481 | } | |
ff5ff606 | 482 | |
ec6452a5 | 483 | sym->dir_dep.expr = expr_alloc_or(sym->dir_dep.expr, parent->dep); |
1da177e4 LT |
484 | } |
485 | for (menu = parent->list; menu; menu = menu->next) { | |
5a1aa8a1 RZ |
486 | if (sym && sym_is_choice(sym) && |
487 | menu->sym && !sym_is_choice_value(menu->sym)) { | |
488 | current_entry = menu; | |
1da177e4 LT |
489 | menu->sym->flags |= SYMBOL_CHOICEVAL; |
490 | if (!menu->prompt) | |
491 | menu_warn(menu, "choice value must have a prompt"); | |
492 | for (prop = menu->sym->prop; prop; prop = prop->next) { | |
1da177e4 LT |
493 | if (prop->type == P_DEFAULT) |
494 | prop_warn(prop, "defaults for choice " | |
5a1aa8a1 RZ |
495 | "values not supported"); |
496 | if (prop->menu == menu) | |
497 | continue; | |
498 | if (prop->type == P_PROMPT && | |
499 | prop->menu->parent->sym != sym) | |
500 | prop_warn(prop, "choice value used outside its choice group"); | |
1da177e4 | 501 | } |
f5eaa323 JB |
502 | /* Non-tristate choice values of tristate choices must |
503 | * depend on the choice being set to Y. The choice | |
504 | * values' dependencies were propagated to their | |
505 | * properties above, so the change here must be re- | |
5a1aa8a1 RZ |
506 | * propagated. |
507 | */ | |
f5eaa323 JB |
508 | if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) { |
509 | basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes); | |
5a1aa8a1 | 510 | menu->dep = expr_alloc_and(basedep, menu->dep); |
f5eaa323 JB |
511 | for (prop = menu->sym->prop; prop; prop = prop->next) { |
512 | if (prop->menu != menu) | |
513 | continue; | |
5a1aa8a1 RZ |
514 | prop->visible.expr = expr_alloc_and(expr_copy(basedep), |
515 | prop->visible.expr); | |
f5eaa323 JB |
516 | } |
517 | } | |
1da177e4 LT |
518 | menu_add_symbol(P_CHOICE, sym, NULL); |
519 | prop = sym_get_choice_prop(sym); | |
520 | for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr) | |
521 | ; | |
7a962923 | 522 | *ep = expr_alloc_one(E_LIST, NULL); |
1da177e4 LT |
523 | (*ep)->right.sym = menu->sym; |
524 | } | |
9d1a9e8b UM |
525 | |
526 | /* | |
527 | * This code serves two purposes: | |
528 | * | |
529 | * (1) Flattening 'if' blocks, which do not specify a submenu | |
530 | * and only add dependencies. | |
531 | * | |
532 | * (Automatic submenu creation might still create a submenu | |
533 | * from an 'if' before this code runs.) | |
534 | * | |
535 | * (2) "Undoing" any automatic submenus created earlier below | |
536 | * promptless symbols. | |
537 | * | |
538 | * Before: | |
539 | * | |
540 | * A | |
541 | * if ... (or promptless symbol) | |
542 | * +-B | |
543 | * +-C | |
544 | * D | |
545 | * | |
546 | * After: | |
547 | * | |
548 | * A | |
549 | * if ... (or promptless symbol) | |
550 | * B | |
551 | * C | |
552 | * D | |
553 | */ | |
1da177e4 LT |
554 | if (menu->list && (!menu->prompt || !menu->prompt->text)) { |
555 | for (last_menu = menu->list; ; last_menu = last_menu->next) { | |
556 | last_menu->parent = parent; | |
557 | if (!last_menu->next) | |
558 | break; | |
559 | } | |
560 | last_menu->next = menu->next; | |
561 | menu->next = menu->list; | |
562 | menu->list = NULL; | |
563 | } | |
564 | } | |
565 | ||
566 | if (sym && !(sym->flags & SYMBOL_WARNED)) { | |
567 | if (sym->type == S_UNKNOWN) | |
f001f7f8 | 568 | menu_warn(parent, "config symbol defined without type"); |
1da177e4 LT |
569 | |
570 | if (sym_is_choice(sym) && !parent->prompt) | |
f001f7f8 | 571 | menu_warn(parent, "choice must have a prompt"); |
1da177e4 LT |
572 | |
573 | /* Check properties connected to this symbol */ | |
574 | sym_check_prop(sym); | |
575 | sym->flags |= SYMBOL_WARNED; | |
576 | } | |
577 | ||
3e41ba05 UM |
578 | /* |
579 | * For non-optional choices, add a reverse dependency (corresponding to | |
580 | * a select) of '<visibility> && m'. This prevents the user from | |
581 | * setting the choice mode to 'n' when the choice is visible. | |
582 | * | |
583 | * This would also work for non-choice symbols, but only non-optional | |
584 | * choices clear SYMBOL_OPTIONAL as of writing. Choices are implemented | |
585 | * as a type of symbol. | |
586 | */ | |
1da177e4 LT |
587 | if (sym && !sym_is_optional(sym) && parent->prompt) { |
588 | sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr, | |
589 | expr_alloc_and(parent->prompt->visible.expr, | |
590 | expr_alloc_symbol(&symbol_mod))); | |
591 | } | |
592 | } | |
593 | ||
22c7eca6 LZ |
594 | bool menu_has_prompt(struct menu *menu) |
595 | { | |
596 | if (!menu->prompt) | |
597 | return false; | |
598 | return true; | |
599 | } | |
600 | ||
1278ebdb DG |
601 | /* |
602 | * Determine if a menu is empty. | |
603 | * A menu is considered empty if it contains no or only | |
604 | * invisible entries. | |
605 | */ | |
606 | bool menu_is_empty(struct menu *menu) | |
607 | { | |
608 | struct menu *child; | |
609 | ||
610 | for (child = menu->list; child; child = child->next) { | |
611 | if (menu_is_visible(child)) | |
612 | return(false); | |
613 | } | |
614 | return(true); | |
615 | } | |
616 | ||
1da177e4 LT |
617 | bool menu_is_visible(struct menu *menu) |
618 | { | |
619 | struct menu *child; | |
620 | struct symbol *sym; | |
621 | tristate visible; | |
622 | ||
623 | if (!menu->prompt) | |
624 | return false; | |
22c7eca6 | 625 | |
86e187ff AL |
626 | if (menu->visibility) { |
627 | if (expr_calc_value(menu->visibility) == no) | |
aab24a89 | 628 | return false; |
86e187ff AL |
629 | } |
630 | ||
1da177e4 LT |
631 | sym = menu->sym; |
632 | if (sym) { | |
633 | sym_calc_value(sym); | |
634 | visible = menu->prompt->visible.tri; | |
635 | } else | |
636 | visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr); | |
637 | ||
638 | if (visible != no) | |
639 | return true; | |
22c7eca6 | 640 | |
1da177e4 LT |
641 | if (!sym || sym_get_tristate_value(menu->sym) == no) |
642 | return false; | |
643 | ||
3fb9acb3 LZ |
644 | for (child = menu->list; child; child = child->next) { |
645 | if (menu_is_visible(child)) { | |
646 | if (sym) | |
647 | sym->flags |= SYMBOL_DEF_USER; | |
1da177e4 | 648 | return true; |
3fb9acb3 LZ |
649 | } |
650 | } | |
22c7eca6 | 651 | |
1da177e4 LT |
652 | return false; |
653 | } | |
654 | ||
655 | const char *menu_get_prompt(struct menu *menu) | |
656 | { | |
657 | if (menu->prompt) | |
01771b0f | 658 | return menu->prompt->text; |
1da177e4 | 659 | else if (menu->sym) |
01771b0f | 660 | return menu->sym->name; |
1da177e4 LT |
661 | return NULL; |
662 | } | |
663 | ||
664 | struct menu *menu_get_root_menu(struct menu *menu) | |
665 | { | |
666 | return &rootmenu; | |
667 | } | |
668 | ||
669 | struct menu *menu_get_parent_menu(struct menu *menu) | |
670 | { | |
671 | enum prop_type type; | |
672 | ||
673 | for (; menu != &rootmenu; menu = menu->parent) { | |
674 | type = menu->prompt ? menu->prompt->type : 0; | |
675 | if (type == P_MENU) | |
676 | break; | |
677 | } | |
678 | return menu; | |
679 | } | |
680 | ||
03d29122 SR |
681 | bool menu_has_help(struct menu *menu) |
682 | { | |
683 | return menu->help != NULL; | |
684 | } | |
685 | ||
686 | const char *menu_get_help(struct menu *menu) | |
687 | { | |
688 | if (menu->help) | |
689 | return menu->help; | |
690 | else | |
691 | return ""; | |
692 | } | |
6bd5999d | 693 | |
edda15f2 TH |
694 | static void get_def_str(struct gstr *r, struct menu *menu) |
695 | { | |
696 | str_printf(r, "Defined at %s:%d\n", | |
697 | menu->file->name, menu->lineno); | |
698 | } | |
699 | ||
700 | static void get_dep_str(struct gstr *r, struct expr *expr, const char *prefix) | |
701 | { | |
702 | if (!expr_is_yes(expr)) { | |
703 | str_append(r, prefix); | |
704 | expr_gstr_print(expr, r); | |
705 | str_append(r, "\n"); | |
706 | } | |
707 | } | |
708 | ||
95ac9b3b | 709 | static void get_prompt_str(struct gstr *r, struct property *prop, |
bad9955d | 710 | struct list_head *head) |
6bd5999d CR |
711 | { |
712 | int i, j; | |
5e609add | 713 | struct menu *submenu[8], *menu, *location = NULL; |
2d560306 | 714 | struct jump_key *jump = NULL; |
6bd5999d | 715 | |
edda15f2 TH |
716 | str_printf(r, " Prompt: %s\n", prop->text); |
717 | ||
718 | get_dep_str(r, prop->menu->dep, " Depends on: "); | |
3460d0bc TH |
719 | /* |
720 | * Most prompts in Linux have visibility that exactly matches their | |
721 | * dependencies. For these, we print only the dependencies to improve | |
722 | * readability. However, prompts with inline "if" expressions and | |
723 | * prompts with a parent that has a "visible if" expression have | |
724 | * differing dependencies and visibility. In these rare cases, we | |
725 | * print both. | |
726 | */ | |
727 | if (!expr_eq(prop->menu->dep, prop->visible.expr)) | |
728 | get_dep_str(r, prop->visible.expr, " Visible if: "); | |
729 | ||
6bd5999d | 730 | menu = prop->menu->parent; |
5e609add BP |
731 | for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) { |
732 | bool accessible = menu_is_visible(menu); | |
733 | ||
6bd5999d | 734 | submenu[i++] = menu; |
5e609add BP |
735 | if (location == NULL && accessible) |
736 | location = menu; | |
737 | } | |
95ac9b3b | 738 | if (head && location) { |
177acf78 | 739 | jump = xmalloc(sizeof(struct jump_key)); |
95ac9b3b | 740 | |
5e609add BP |
741 | if (menu_is_visible(prop->menu)) { |
742 | /* | |
743 | * There is not enough room to put the hint at the | |
744 | * beginning of the "Prompt" line. Put the hint on the | |
745 | * last "Location" line even when it would belong on | |
746 | * the former. | |
747 | */ | |
95ac9b3b | 748 | jump->target = prop->menu; |
5e609add | 749 | } else |
95ac9b3b BP |
750 | jump->target = location; |
751 | ||
bad9955d | 752 | if (list_empty(head)) |
95ac9b3b BP |
753 | jump->index = 0; |
754 | else | |
bad9955d BP |
755 | jump->index = list_entry(head->prev, struct jump_key, |
756 | entries)->index + 1; | |
95ac9b3b | 757 | |
bad9955d | 758 | list_add_tail(&jump->entries, head); |
95ac9b3b | 759 | } |
5e609add | 760 | |
6bd5999d | 761 | if (i > 0) { |
694c49a7 | 762 | str_printf(r, " Location:\n"); |
95ac9b3b | 763 | for (j = 4; --i >= 0; j += 2) { |
6bd5999d | 764 | menu = submenu[i]; |
2d560306 | 765 | if (jump && menu == location) |
503c8230 | 766 | jump->offset = strlen(r->s); |
95ac9b3b | 767 | str_printf(r, "%*c-> %s", j, ' ', |
694c49a7 | 768 | menu_get_prompt(menu)); |
6bd5999d CR |
769 | if (menu->sym) { |
770 | str_printf(r, " (%s [=%s])", menu->sym->name ? | |
694c49a7 | 771 | menu->sym->name : "<choice>", |
6bd5999d CR |
772 | sym_get_string_value(menu->sym)); |
773 | } | |
774 | str_append(r, "\n"); | |
775 | } | |
776 | } | |
777 | } | |
778 | ||
237e3ad0 NP |
779 | static void get_symbol_props_str(struct gstr *r, struct symbol *sym, |
780 | enum prop_type tok, const char *prefix) | |
781 | { | |
782 | bool hit = false; | |
783 | struct property *prop; | |
784 | ||
785 | for_all_properties(sym, prop, tok) { | |
786 | if (!hit) { | |
787 | str_append(r, prefix); | |
788 | hit = true; | |
789 | } else | |
790 | str_printf(r, " && "); | |
791 | expr_gstr_print(prop->expr, r); | |
792 | } | |
793 | if (hit) | |
794 | str_append(r, "\n"); | |
795 | } | |
796 | ||
5e609add | 797 | /* |
95ac9b3b | 798 | * head is optional and may be NULL |
5e609add | 799 | */ |
ad8d40cd | 800 | static void get_symbol_str(struct gstr *r, struct symbol *sym, |
bad9955d | 801 | struct list_head *head) |
6bd5999d | 802 | { |
6bd5999d CR |
803 | struct property *prop; |
804 | ||
b040b44c | 805 | if (sym && sym->name) { |
6bd5999d CR |
806 | str_printf(r, "Symbol: %s [=%s]\n", sym->name, |
807 | sym_get_string_value(sym)); | |
b040b44c | 808 | str_printf(r, "Type : %s\n", sym_type_name(sym->type)); |
70ed0747 LZ |
809 | if (sym->type == S_INT || sym->type == S_HEX) { |
810 | prop = sym_get_range_prop(sym); | |
811 | if (prop) { | |
812 | str_printf(r, "Range : "); | |
813 | expr_gstr_print(prop->expr, r); | |
814 | str_append(r, "\n"); | |
815 | } | |
816 | } | |
b040b44c | 817 | } |
edda15f2 TH |
818 | |
819 | /* Print the definitions with prompts before the ones without */ | |
820 | for_all_properties(sym, prop, P_SYMBOL) { | |
821 | if (prop->menu->prompt) { | |
822 | get_def_str(r, prop->menu); | |
823 | get_prompt_str(r, prop->menu->prompt, head); | |
824 | } | |
825 | } | |
826 | ||
827 | for_all_properties(sym, prop, P_SYMBOL) { | |
828 | if (!prop->menu->prompt) { | |
829 | get_def_str(r, prop->menu); | |
830 | get_dep_str(r, prop->menu->dep, " Depends on: "); | |
383da76f | 831 | } |
bcdedcc1 | 832 | } |
383da76f | 833 | |
a9609686 | 834 | get_symbol_props_str(r, sym, P_SELECT, "Selects: "); |
6bd5999d | 835 | if (sym->rev_dep.expr) { |
a9609686 TH |
836 | expr_gstr_print_revdep(sym->rev_dep.expr, r, yes, "Selected by [y]:\n"); |
837 | expr_gstr_print_revdep(sym->rev_dep.expr, r, mod, "Selected by [m]:\n"); | |
838 | expr_gstr_print_revdep(sym->rev_dep.expr, r, no, "Selected by [n]:\n"); | |
6bd5999d | 839 | } |
237e3ad0 | 840 | |
a9609686 | 841 | get_symbol_props_str(r, sym, P_IMPLY, "Implies: "); |
237e3ad0 | 842 | if (sym->implied.expr) { |
a9609686 TH |
843 | expr_gstr_print_revdep(sym->implied.expr, r, yes, "Implied by [y]:\n"); |
844 | expr_gstr_print_revdep(sym->implied.expr, r, mod, "Implied by [m]:\n"); | |
845 | expr_gstr_print_revdep(sym->implied.expr, r, no, "Implied by [n]:\n"); | |
237e3ad0 NP |
846 | } |
847 | ||
6bd5999d CR |
848 | str_append(r, "\n\n"); |
849 | } | |
850 | ||
bad9955d | 851 | struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head) |
692d97c3 | 852 | { |
853 | struct symbol *sym; | |
854 | struct gstr res = str_new(); | |
95ac9b3b | 855 | int i; |
692d97c3 | 856 | |
857 | for (i = 0; sym_arr && (sym = sym_arr[i]); i++) | |
95ac9b3b | 858 | get_symbol_str(&res, sym, head); |
692d97c3 | 859 | if (!i) |
694c49a7 | 860 | str_append(&res, "No matches found.\n"); |
692d97c3 | 861 | return res; |
862 | } | |
863 | ||
864 | ||
6bd5999d CR |
865 | void menu_get_ext_help(struct menu *menu, struct gstr *help) |
866 | { | |
867 | struct symbol *sym = menu->sym; | |
57e6292d | 868 | const char *help_text = nohelp_text; |
6bd5999d CR |
869 | |
870 | if (menu_has_help(menu)) { | |
3f198dfe | 871 | if (sym->name) |
ffb5957b | 872 | str_printf(help, "%s%s:\n\n", CONFIG_, sym->name); |
57e6292d | 873 | help_text = menu_get_help(menu); |
6bd5999d | 874 | } |
694c49a7 | 875 | str_printf(help, "%s\n", help_text); |
4779105e | 876 | if (sym) |
95ac9b3b | 877 | get_symbol_str(help, sym, NULL); |
6bd5999d | 878 | } |