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1da177e4 LT |
1 | /* |
2 | * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> | |
3 | * Released under the terms of the GNU GPL v2.0. | |
4 | */ | |
5 | ||
6 | #include <stdlib.h> | |
7 | #include <string.h> | |
8 | ||
9 | #define LKC_DIRECT_LINK | |
10 | #include "lkc.h" | |
11 | ||
12 | struct menu rootmenu; | |
13 | static struct menu **last_entry_ptr; | |
14 | ||
15 | struct file *file_list; | |
16 | struct file *current_file; | |
17 | ||
93449082 | 18 | void menu_warn(struct menu *menu, const char *fmt, ...) |
1da177e4 LT |
19 | { |
20 | va_list ap; | |
21 | va_start(ap, fmt); | |
22 | fprintf(stderr, "%s:%d:warning: ", menu->file->name, menu->lineno); | |
23 | vfprintf(stderr, fmt, ap); | |
24 | fprintf(stderr, "\n"); | |
25 | va_end(ap); | |
26 | } | |
27 | ||
28 | static void prop_warn(struct property *prop, const char *fmt, ...) | |
29 | { | |
30 | va_list ap; | |
31 | va_start(ap, fmt); | |
32 | fprintf(stderr, "%s:%d:warning: ", prop->file->name, prop->lineno); | |
33 | vfprintf(stderr, fmt, ap); | |
34 | fprintf(stderr, "\n"); | |
35 | va_end(ap); | |
36 | } | |
37 | ||
38 | void menu_init(void) | |
39 | { | |
40 | current_entry = current_menu = &rootmenu; | |
41 | last_entry_ptr = &rootmenu.list; | |
42 | } | |
43 | ||
44 | void menu_add_entry(struct symbol *sym) | |
45 | { | |
46 | struct menu *menu; | |
47 | ||
48 | menu = malloc(sizeof(*menu)); | |
49 | memset(menu, 0, sizeof(*menu)); | |
50 | menu->sym = sym; | |
51 | menu->parent = current_menu; | |
52 | menu->file = current_file; | |
53 | menu->lineno = zconf_lineno(); | |
54 | ||
55 | *last_entry_ptr = menu; | |
56 | last_entry_ptr = &menu->next; | |
57 | current_entry = menu; | |
58 | } | |
59 | ||
60 | void menu_end_entry(void) | |
61 | { | |
62 | } | |
63 | ||
a02f0570 | 64 | struct menu *menu_add_menu(void) |
1da177e4 | 65 | { |
a02f0570 | 66 | menu_end_entry(); |
1da177e4 | 67 | last_entry_ptr = ¤t_entry->list; |
a02f0570 | 68 | return current_menu = current_entry; |
1da177e4 LT |
69 | } |
70 | ||
71 | void menu_end_menu(void) | |
72 | { | |
73 | last_entry_ptr = ¤t_menu->next; | |
74 | current_menu = current_menu->parent; | |
75 | } | |
76 | ||
77 | struct expr *menu_check_dep(struct expr *e) | |
78 | { | |
79 | if (!e) | |
80 | return e; | |
81 | ||
82 | switch (e->type) { | |
83 | case E_NOT: | |
84 | e->left.expr = menu_check_dep(e->left.expr); | |
85 | break; | |
86 | case E_OR: | |
87 | case E_AND: | |
88 | e->left.expr = menu_check_dep(e->left.expr); | |
89 | e->right.expr = menu_check_dep(e->right.expr); | |
90 | break; | |
91 | case E_SYMBOL: | |
92 | /* change 'm' into 'm' && MODULES */ | |
93 | if (e->left.sym == &symbol_mod) | |
94 | return expr_alloc_and(e, expr_alloc_symbol(modules_sym)); | |
95 | break; | |
96 | default: | |
97 | break; | |
98 | } | |
99 | return e; | |
100 | } | |
101 | ||
102 | void menu_add_dep(struct expr *dep) | |
103 | { | |
104 | current_entry->dep = expr_alloc_and(current_entry->dep, menu_check_dep(dep)); | |
105 | } | |
106 | ||
107 | void menu_set_type(int type) | |
108 | { | |
109 | struct symbol *sym = current_entry->sym; | |
110 | ||
111 | if (sym->type == type) | |
112 | return; | |
113 | if (sym->type == S_UNKNOWN) { | |
114 | sym->type = type; | |
115 | return; | |
116 | } | |
f001f7f8 | 117 | menu_warn(current_entry, "type of '%s' redefined from '%s' to '%s'", |
1da177e4 LT |
118 | sym->name ? sym->name : "<choice>", |
119 | sym_type_name(sym->type), sym_type_name(type)); | |
120 | } | |
121 | ||
122 | struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep) | |
123 | { | |
124 | struct property *prop = prop_alloc(type, current_entry->sym); | |
125 | ||
126 | prop->menu = current_entry; | |
1da177e4 LT |
127 | prop->expr = expr; |
128 | prop->visible.expr = menu_check_dep(dep); | |
129 | ||
130 | if (prompt) { | |
f001f7f8 RZ |
131 | if (isspace(*prompt)) { |
132 | prop_warn(prop, "leading whitespace ignored"); | |
133 | while (isspace(*prompt)) | |
134 | prompt++; | |
135 | } | |
1da177e4 | 136 | if (current_entry->prompt) |
f001f7f8 | 137 | prop_warn(prop, "prompt redefined"); |
1da177e4 LT |
138 | current_entry->prompt = prop; |
139 | } | |
f001f7f8 | 140 | prop->text = prompt; |
1da177e4 LT |
141 | |
142 | return prop; | |
143 | } | |
144 | ||
fb7f6ff6 | 145 | struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep) |
1da177e4 | 146 | { |
fb7f6ff6 | 147 | return menu_add_prop(type, prompt, NULL, dep); |
1da177e4 LT |
148 | } |
149 | ||
150 | void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep) | |
151 | { | |
152 | menu_add_prop(type, NULL, expr, dep); | |
153 | } | |
154 | ||
155 | void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep) | |
156 | { | |
157 | menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep); | |
158 | } | |
159 | ||
f6a88aa8 RZ |
160 | void menu_add_option(int token, char *arg) |
161 | { | |
face4374 RZ |
162 | struct property *prop; |
163 | ||
164 | switch (token) { | |
165 | case T_OPT_MODULES: | |
166 | prop = prop_alloc(P_DEFAULT, modules_sym); | |
167 | prop->expr = expr_alloc_symbol(current_entry->sym); | |
168 | break; | |
169 | case T_OPT_DEFCONFIG_LIST: | |
170 | if (!sym_defconfig_list) | |
171 | sym_defconfig_list = current_entry->sym; | |
172 | else if (sym_defconfig_list != current_entry->sym) | |
173 | zconf_error("trying to redefine defconfig symbol"); | |
174 | break; | |
93449082 RZ |
175 | case T_OPT_ENV: |
176 | prop_add_env(arg); | |
177 | break; | |
face4374 | 178 | } |
f6a88aa8 RZ |
179 | } |
180 | ||
4cf3cbe2 RZ |
181 | static int menu_range_valid_sym(struct symbol *sym, struct symbol *sym2) |
182 | { | |
183 | return sym2->type == S_INT || sym2->type == S_HEX || | |
184 | (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name)); | |
185 | } | |
186 | ||
1da177e4 LT |
187 | void sym_check_prop(struct symbol *sym) |
188 | { | |
189 | struct property *prop; | |
190 | struct symbol *sym2; | |
191 | for (prop = sym->prop; prop; prop = prop->next) { | |
192 | switch (prop->type) { | |
193 | case P_DEFAULT: | |
194 | if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) && | |
195 | prop->expr->type != E_SYMBOL) | |
196 | prop_warn(prop, | |
197 | "default for config symbol '%'" | |
198 | " must be a single symbol", sym->name); | |
199 | break; | |
200 | case P_SELECT: | |
201 | sym2 = prop_get_symbol(prop); | |
202 | if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE) | |
203 | prop_warn(prop, | |
204 | "config symbol '%s' uses select, but is " | |
205 | "not boolean or tristate", sym->name); | |
603d4988 SR |
206 | else if (sym2->type != S_UNKNOWN && |
207 | sym2->type != S_BOOLEAN && | |
208 | sym2->type != S_TRISTATE) | |
1da177e4 LT |
209 | prop_warn(prop, |
210 | "'%s' has wrong type. 'select' only " | |
211 | "accept arguments of boolean and " | |
212 | "tristate type", sym2->name); | |
213 | break; | |
214 | case P_RANGE: | |
215 | if (sym->type != S_INT && sym->type != S_HEX) | |
216 | prop_warn(prop, "range is only allowed " | |
217 | "for int or hex symbols"); | |
4cf3cbe2 RZ |
218 | if (!menu_range_valid_sym(sym, prop->expr->left.sym) || |
219 | !menu_range_valid_sym(sym, prop->expr->right.sym)) | |
1da177e4 LT |
220 | prop_warn(prop, "range is invalid"); |
221 | break; | |
222 | default: | |
223 | ; | |
224 | } | |
225 | } | |
226 | } | |
227 | ||
228 | void menu_finalize(struct menu *parent) | |
229 | { | |
230 | struct menu *menu, *last_menu; | |
231 | struct symbol *sym; | |
232 | struct property *prop; | |
233 | struct expr *parentdep, *basedep, *dep, *dep2, **ep; | |
234 | ||
235 | sym = parent->sym; | |
236 | if (parent->list) { | |
237 | if (sym && sym_is_choice(sym)) { | |
e8b8c977 | 238 | /* find the first choice value and find out choice type */ |
1da177e4 | 239 | for (menu = parent->list; menu; menu = menu->next) { |
e8b8c977 LT |
240 | if (menu->sym) { |
241 | current_entry = parent; | |
f5eaa323 JB |
242 | if (sym->type == S_UNKNOWN) |
243 | menu_set_type(menu->sym->type); | |
e8b8c977 | 244 | current_entry = menu; |
f5eaa323 JB |
245 | if (menu->sym->type == S_UNKNOWN) |
246 | menu_set_type(sym->type); | |
e8b8c977 | 247 | break; |
1da177e4 LT |
248 | } |
249 | } | |
250 | parentdep = expr_alloc_symbol(sym); | |
251 | } else if (parent->prompt) | |
252 | parentdep = parent->prompt->visible.expr; | |
253 | else | |
254 | parentdep = parent->dep; | |
255 | ||
256 | for (menu = parent->list; menu; menu = menu->next) { | |
257 | basedep = expr_transform(menu->dep); | |
e8b8c977 | 258 | basedep = expr_alloc_and(expr_copy(parentdep), basedep); |
1da177e4 LT |
259 | basedep = expr_eliminate_dups(basedep); |
260 | menu->dep = basedep; | |
261 | if (menu->sym) | |
262 | prop = menu->sym->prop; | |
263 | else | |
264 | prop = menu->prompt; | |
265 | for (; prop; prop = prop->next) { | |
266 | if (prop->menu != menu) | |
267 | continue; | |
268 | dep = expr_transform(prop->visible.expr); | |
269 | dep = expr_alloc_and(expr_copy(basedep), dep); | |
270 | dep = expr_eliminate_dups(dep); | |
271 | if (menu->sym && menu->sym->type != S_TRISTATE) | |
272 | dep = expr_trans_bool(dep); | |
273 | prop->visible.expr = dep; | |
274 | if (prop->type == P_SELECT) { | |
275 | struct symbol *es = prop_get_symbol(prop); | |
276 | es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr, | |
277 | expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep))); | |
278 | } | |
279 | } | |
280 | } | |
281 | for (menu = parent->list; menu; menu = menu->next) | |
282 | menu_finalize(menu); | |
283 | } else if (sym) { | |
284 | basedep = parent->prompt ? parent->prompt->visible.expr : NULL; | |
285 | basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no); | |
286 | basedep = expr_eliminate_dups(expr_transform(basedep)); | |
287 | last_menu = NULL; | |
288 | for (menu = parent->next; menu; menu = menu->next) { | |
289 | dep = menu->prompt ? menu->prompt->visible.expr : menu->dep; | |
290 | if (!expr_contains_symbol(dep, sym)) | |
291 | break; | |
292 | if (expr_depends_symbol(dep, sym)) | |
293 | goto next; | |
294 | dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no); | |
295 | dep = expr_eliminate_dups(expr_transform(dep)); | |
296 | dep2 = expr_copy(basedep); | |
297 | expr_eliminate_eq(&dep, &dep2); | |
298 | expr_free(dep); | |
299 | if (!expr_is_yes(dep2)) { | |
300 | expr_free(dep2); | |
301 | break; | |
302 | } | |
303 | expr_free(dep2); | |
304 | next: | |
305 | menu_finalize(menu); | |
306 | menu->parent = parent; | |
307 | last_menu = menu; | |
308 | } | |
309 | if (last_menu) { | |
310 | parent->list = parent->next; | |
311 | parent->next = last_menu->next; | |
312 | last_menu->next = NULL; | |
313 | } | |
314 | } | |
315 | for (menu = parent->list; menu; menu = menu->next) { | |
316 | if (sym && sym_is_choice(sym) && menu->sym) { | |
317 | menu->sym->flags |= SYMBOL_CHOICEVAL; | |
318 | if (!menu->prompt) | |
319 | menu_warn(menu, "choice value must have a prompt"); | |
320 | for (prop = menu->sym->prop; prop; prop = prop->next) { | |
321 | if (prop->type == P_PROMPT && prop->menu != menu) { | |
322 | prop_warn(prop, "choice values " | |
323 | "currently only support a " | |
324 | "single prompt"); | |
325 | } | |
326 | if (prop->type == P_DEFAULT) | |
327 | prop_warn(prop, "defaults for choice " | |
328 | "values not supported"); | |
329 | } | |
330 | current_entry = menu; | |
f5eaa323 JB |
331 | if (menu->sym->type == S_UNKNOWN) |
332 | menu_set_type(sym->type); | |
333 | /* Non-tristate choice values of tristate choices must | |
334 | * depend on the choice being set to Y. The choice | |
335 | * values' dependencies were propagated to their | |
336 | * properties above, so the change here must be re- | |
337 | * propagated. */ | |
338 | if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) { | |
339 | basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes); | |
340 | basedep = expr_alloc_and(basedep, menu->dep); | |
341 | basedep = expr_eliminate_dups(basedep); | |
342 | menu->dep = basedep; | |
343 | for (prop = menu->sym->prop; prop; prop = prop->next) { | |
344 | if (prop->menu != menu) | |
345 | continue; | |
346 | dep = expr_alloc_and(expr_copy(basedep), | |
347 | prop->visible.expr); | |
348 | dep = expr_eliminate_dups(dep); | |
349 | dep = expr_trans_bool(dep); | |
350 | prop->visible.expr = dep; | |
351 | if (prop->type == P_SELECT) { | |
352 | struct symbol *es = prop_get_symbol(prop); | |
353 | dep2 = expr_alloc_symbol(menu->sym); | |
354 | dep = expr_alloc_and(dep2, | |
355 | expr_copy(dep)); | |
356 | dep = expr_alloc_or(es->rev_dep.expr, dep); | |
357 | dep = expr_eliminate_dups(dep); | |
358 | es->rev_dep.expr = dep; | |
359 | } | |
360 | } | |
361 | } | |
1da177e4 LT |
362 | menu_add_symbol(P_CHOICE, sym, NULL); |
363 | prop = sym_get_choice_prop(sym); | |
364 | for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr) | |
365 | ; | |
7a962923 | 366 | *ep = expr_alloc_one(E_LIST, NULL); |
1da177e4 LT |
367 | (*ep)->right.sym = menu->sym; |
368 | } | |
369 | if (menu->list && (!menu->prompt || !menu->prompt->text)) { | |
370 | for (last_menu = menu->list; ; last_menu = last_menu->next) { | |
371 | last_menu->parent = parent; | |
372 | if (!last_menu->next) | |
373 | break; | |
374 | } | |
375 | last_menu->next = menu->next; | |
376 | menu->next = menu->list; | |
377 | menu->list = NULL; | |
378 | } | |
379 | } | |
380 | ||
381 | if (sym && !(sym->flags & SYMBOL_WARNED)) { | |
382 | if (sym->type == S_UNKNOWN) | |
f001f7f8 | 383 | menu_warn(parent, "config symbol defined without type"); |
1da177e4 LT |
384 | |
385 | if (sym_is_choice(sym) && !parent->prompt) | |
f001f7f8 | 386 | menu_warn(parent, "choice must have a prompt"); |
1da177e4 LT |
387 | |
388 | /* Check properties connected to this symbol */ | |
389 | sym_check_prop(sym); | |
390 | sym->flags |= SYMBOL_WARNED; | |
391 | } | |
392 | ||
393 | if (sym && !sym_is_optional(sym) && parent->prompt) { | |
394 | sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr, | |
395 | expr_alloc_and(parent->prompt->visible.expr, | |
396 | expr_alloc_symbol(&symbol_mod))); | |
397 | } | |
398 | } | |
399 | ||
400 | bool menu_is_visible(struct menu *menu) | |
401 | { | |
402 | struct menu *child; | |
403 | struct symbol *sym; | |
404 | tristate visible; | |
405 | ||
406 | if (!menu->prompt) | |
407 | return false; | |
408 | sym = menu->sym; | |
409 | if (sym) { | |
410 | sym_calc_value(sym); | |
411 | visible = menu->prompt->visible.tri; | |
412 | } else | |
413 | visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr); | |
414 | ||
415 | if (visible != no) | |
416 | return true; | |
417 | if (!sym || sym_get_tristate_value(menu->sym) == no) | |
418 | return false; | |
419 | ||
420 | for (child = menu->list; child; child = child->next) | |
421 | if (menu_is_visible(child)) | |
422 | return true; | |
423 | return false; | |
424 | } | |
425 | ||
426 | const char *menu_get_prompt(struct menu *menu) | |
427 | { | |
428 | if (menu->prompt) | |
01771b0f | 429 | return menu->prompt->text; |
1da177e4 | 430 | else if (menu->sym) |
01771b0f | 431 | return menu->sym->name; |
1da177e4 LT |
432 | return NULL; |
433 | } | |
434 | ||
435 | struct menu *menu_get_root_menu(struct menu *menu) | |
436 | { | |
437 | return &rootmenu; | |
438 | } | |
439 | ||
440 | struct menu *menu_get_parent_menu(struct menu *menu) | |
441 | { | |
442 | enum prop_type type; | |
443 | ||
444 | for (; menu != &rootmenu; menu = menu->parent) { | |
445 | type = menu->prompt ? menu->prompt->type : 0; | |
446 | if (type == P_MENU) | |
447 | break; | |
448 | } | |
449 | return menu; | |
450 | } | |
451 | ||
03d29122 SR |
452 | bool menu_has_help(struct menu *menu) |
453 | { | |
454 | return menu->help != NULL; | |
455 | } | |
456 | ||
457 | const char *menu_get_help(struct menu *menu) | |
458 | { | |
459 | if (menu->help) | |
460 | return menu->help; | |
461 | else | |
462 | return ""; | |
463 | } |