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6#include <stdlib.h>
7#include <string.h>
8
9#define LKC_DIRECT_LINK
10#include "lkc.h"
11
12static const char nohelp_text[] = N_(
13 "There is no help available for this kernel option.\n");
14
15struct menu rootmenu;
16static struct menu **last_entry_ptr;
17
18struct file *file_list;
19struct file *current_file;
20
21void menu_warn(struct menu *menu, const char *fmt, ...)
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
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
41void menu_init(void)
42{
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
51 menu = malloc(sizeof(*menu));
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;
61}
62
63void menu_end_entry(void)
64{
65}
66
67struct menu *menu_add_menu(void)
68{
69 menu_end_entry();
70 last_entry_ptr = ¤t_entry->list;
71 return current_menu = current_entry;
72}
73
74void menu_end_menu(void)
75{
76 last_entry_ptr = ¤t_menu->next;
77 current_menu = current_menu->parent;
78}
79
80static struct expr *menu_check_dep(struct expr *e)
81{
82 if (!e)
83 return e;
84
85 switch (e->type) {
86 case E_NOT:
87 e->left.expr = menu_check_dep(e->left.expr);
88 break;
89 case E_OR:
90 case E_AND:
91 e->left.expr = menu_check_dep(e->left.expr);
92 e->right.expr = menu_check_dep(e->right.expr);
93 break;
94 case E_SYMBOL:
95
96 if (e->left.sym == &symbol_mod)
97 return expr_alloc_and(e, expr_alloc_symbol(modules_sym));
98 break;
99 default:
100 break;
101 }
102 return e;
103}
104
105void menu_add_dep(struct expr *dep)
106{
107 current_entry->dep = expr_alloc_and(current_entry->dep, menu_check_dep(dep));
108}
109
110void menu_set_type(int type)
111{
112 struct symbol *sym = current_entry->sym;
113
114 if (sym->type == type)
115 return;
116 if (sym->type == S_UNKNOWN) {
117 sym->type = type;
118 return;
119 }
120 menu_warn(current_entry, "type of '%s' redefined from '%s' to '%s'",
121 sym->name ? sym->name : "<choice>",
122 sym_type_name(sym->type), sym_type_name(type));
123}
124
125struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep)
126{
127 struct property *prop = prop_alloc(type, current_entry->sym);
128
129 prop->menu = current_entry;
130 prop->expr = expr;
131 prop->visible.expr = menu_check_dep(dep);
132
133 if (prompt) {
134 if (isspace(*prompt)) {
135 prop_warn(prop, "leading whitespace ignored");
136 while (isspace(*prompt))
137 prompt++;
138 }
139 if (current_entry->prompt)
140 prop_warn(prop, "prompt redefined");
141 current_entry->prompt = prop;
142 }
143 prop->text = prompt;
144
145 return prop;
146}
147
148struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
149{
150 return menu_add_prop(type, prompt, NULL, dep);
151}
152
153void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
154{
155 menu_add_prop(type, NULL, expr, dep);
156}
157
158void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
159{
160 menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
161}
162
163void menu_add_option(int token, char *arg)
164{
165 struct property *prop;
166
167 switch (token) {
168 case T_OPT_MODULES:
169 prop = prop_alloc(P_DEFAULT, modules_sym);
170 prop->expr = expr_alloc_symbol(current_entry->sym);
171 break;
172 case T_OPT_DEFCONFIG_LIST:
173 if (!sym_defconfig_list)
174 sym_defconfig_list = current_entry->sym;
175 else if (sym_defconfig_list != current_entry->sym)
176 zconf_error("trying to redefine defconfig symbol");
177 break;
178 case T_OPT_ENV:
179 prop_add_env(arg);
180 break;
181 }
182}
183
184static int menu_range_valid_sym(struct symbol *sym, struct symbol *sym2)
185{
186 return sym2->type == S_INT || sym2->type == S_HEX ||
187 (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
188}
189
190static void sym_check_prop(struct symbol *sym)
191{
192 struct property *prop;
193 struct symbol *sym2;
194 for (prop = sym->prop; prop; prop = prop->next) {
195 switch (prop->type) {
196 case P_DEFAULT:
197 if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
198 prop->expr->type != E_SYMBOL)
199 prop_warn(prop,
200 "default for config symbol '%'"
201 " must be a single symbol", sym->name);
202 break;
203 case P_SELECT:
204 sym2 = prop_get_symbol(prop);
205 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
206 prop_warn(prop,
207 "config symbol '%s' uses select, but is "
208 "not boolean or tristate", sym->name);
209 else if (sym2->type != S_UNKNOWN &&
210 sym2->type != S_BOOLEAN &&
211 sym2->type != S_TRISTATE)
212 prop_warn(prop,
213 "'%s' has wrong type. 'select' only "
214 "accept arguments of boolean and "
215 "tristate type", sym2->name);
216 break;
217 case P_RANGE:
218 if (sym->type != S_INT && sym->type != S_HEX)
219 prop_warn(prop, "range is only allowed "
220 "for int or hex symbols");
221 if (!menu_range_valid_sym(sym, prop->expr->left.sym) ||
222 !menu_range_valid_sym(sym, prop->expr->right.sym))
223 prop_warn(prop, "range is invalid");
224 break;
225 default:
226 ;
227 }
228 }
229}
230
231void menu_finalize(struct menu *parent)
232{
233 struct menu *menu, *last_menu;
234 struct symbol *sym;
235 struct property *prop;
236 struct expr *parentdep, *basedep, *dep, *dep2, **ep;
237
238 sym = parent->sym;
239 if (parent->list) {
240 if (sym && sym_is_choice(sym)) {
241 if (sym->type == S_UNKNOWN) {
242
243 current_entry = parent;
244 for (menu = parent->list; menu; menu = menu->next) {
245 if (menu->sym && menu->sym->type != S_UNKNOWN) {
246 menu_set_type(menu->sym->type);
247 break;
248 }
249 }
250 }
251
252 for (menu = parent->list; menu; menu = menu->next) {
253 current_entry = menu;
254 if (menu->sym && menu->sym->type == S_UNKNOWN)
255 menu_set_type(sym->type);
256 }
257 parentdep = expr_alloc_symbol(sym);
258 } else if (parent->prompt)
259 parentdep = parent->prompt->visible.expr;
260 else
261 parentdep = parent->dep;
262
263 for (menu = parent->list; menu; menu = menu->next) {
264 basedep = expr_transform(menu->dep);
265 basedep = expr_alloc_and(expr_copy(parentdep), basedep);
266 basedep = expr_eliminate_dups(basedep);
267 menu->dep = basedep;
268 if (menu->sym)
269 prop = menu->sym->prop;
270 else
271 prop = menu->prompt;
272 for (; prop; prop = prop->next) {
273 if (prop->menu != menu)
274 continue;
275 dep = expr_transform(prop->visible.expr);
276 dep = expr_alloc_and(expr_copy(basedep), dep);
277 dep = expr_eliminate_dups(dep);
278 if (menu->sym && menu->sym->type != S_TRISTATE)
279 dep = expr_trans_bool(dep);
280 prop->visible.expr = dep;
281 if (prop->type == P_SELECT) {
282 struct symbol *es = prop_get_symbol(prop);
283 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
284 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
285 }
286 }
287 }
288 for (menu = parent->list; menu; menu = menu->next)
289 menu_finalize(menu);
290 } else if (sym) {
291 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
292 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
293 basedep = expr_eliminate_dups(expr_transform(basedep));
294 last_menu = NULL;
295 for (menu = parent->next; menu; menu = menu->next) {
296 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
297 if (!expr_contains_symbol(dep, sym))
298 break;
299 if (expr_depends_symbol(dep, sym))
300 goto next;
301 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
302 dep = expr_eliminate_dups(expr_transform(dep));
303 dep2 = expr_copy(basedep);
304 expr_eliminate_eq(&dep, &dep2);
305 expr_free(dep);
306 if (!expr_is_yes(dep2)) {
307 expr_free(dep2);
308 break;
309 }
310 expr_free(dep2);
311 next:
312 menu_finalize(menu);
313 menu->parent = parent;
314 last_menu = menu;
315 }
316 if (last_menu) {
317 parent->list = parent->next;
318 parent->next = last_menu->next;
319 last_menu->next = NULL;
320 }
321 }
322 for (menu = parent->list; menu; menu = menu->next) {
323 if (sym && sym_is_choice(sym) &&
324 menu->sym && !sym_is_choice_value(menu->sym)) {
325 current_entry = menu;
326 menu->sym->flags |= SYMBOL_CHOICEVAL;
327 if (!menu->prompt)
328 menu_warn(menu, "choice value must have a prompt");
329 for (prop = menu->sym->prop; prop; prop = prop->next) {
330 if (prop->type == P_DEFAULT)
331 prop_warn(prop, "defaults for choice "
332 "values not supported");
333 if (prop->menu == menu)
334 continue;
335 if (prop->type == P_PROMPT &&
336 prop->menu->parent->sym != sym)
337 prop_warn(prop, "choice value used outside its choice group");
338 }
339
340
341
342
343
344
345 if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
346 basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
347 menu->dep = expr_alloc_and(basedep, menu->dep);
348 for (prop = menu->sym->prop; prop; prop = prop->next) {
349 if (prop->menu != menu)
350 continue;
351 prop->visible.expr = expr_alloc_and(expr_copy(basedep),
352 prop->visible.expr);
353 }
354 }
355 menu_add_symbol(P_CHOICE, sym, NULL);
356 prop = sym_get_choice_prop(sym);
357 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
358 ;
359 *ep = expr_alloc_one(E_LIST, NULL);
360 (*ep)->right.sym = menu->sym;
361 }
362 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
363 for (last_menu = menu->list; ; last_menu = last_menu->next) {
364 last_menu->parent = parent;
365 if (!last_menu->next)
366 break;
367 }
368 last_menu->next = menu->next;
369 menu->next = menu->list;
370 menu->list = NULL;
371 }
372 }
373
374 if (sym && !(sym->flags & SYMBOL_WARNED)) {
375 if (sym->type == S_UNKNOWN)
376 menu_warn(parent, "config symbol defined without type");
377
378 if (sym_is_choice(sym) && !parent->prompt)
379 menu_warn(parent, "choice must have a prompt");
380
381
382 sym_check_prop(sym);
383 sym->flags |= SYMBOL_WARNED;
384 }
385
386 if (sym && !sym_is_optional(sym) && parent->prompt) {
387 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
388 expr_alloc_and(parent->prompt->visible.expr,
389 expr_alloc_symbol(&symbol_mod)));
390 }
391}
392
393bool menu_is_visible(struct menu *menu)
394{
395 struct menu *child;
396 struct symbol *sym;
397 tristate visible;
398
399 if (!menu->prompt)
400 return false;
401 sym = menu->sym;
402 if (sym) {
403 sym_calc_value(sym);
404 visible = menu->prompt->visible.tri;
405 } else
406 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
407
408 if (visible != no)
409 return true;
410 if (!sym || sym_get_tristate_value(menu->sym) == no)
411 return false;
412
413 for (child = menu->list; child; child = child->next)
414 if (menu_is_visible(child))
415 return true;
416 return false;
417}
418
419const char *menu_get_prompt(struct menu *menu)
420{
421 if (menu->prompt)
422 return menu->prompt->text;
423 else if (menu->sym)
424 return menu->sym->name;
425 return NULL;
426}
427
428struct menu *menu_get_root_menu(struct menu *menu)
429{
430 return &rootmenu;
431}
432
433struct menu *menu_get_parent_menu(struct menu *menu)
434{
435 enum prop_type type;
436
437 for (; menu != &rootmenu; menu = menu->parent) {
438 type = menu->prompt ? menu->prompt->type : 0;
439 if (type == P_MENU)
440 break;
441 }
442 return menu;
443}
444
445bool menu_has_help(struct menu *menu)
446{
447 return menu->help != NULL;
448}
449
450const char *menu_get_help(struct menu *menu)
451{
452 if (menu->help)
453 return menu->help;
454 else
455 return "";
456}
457
458static void get_prompt_str(struct gstr *r, struct property *prop)
459{
460 int i, j;
461 struct menu *submenu[8], *menu;
462
463 str_printf(r, _("Prompt: %s\n"), _(prop->text));
464 str_printf(r, _(" Defined at %s:%d\n"), prop->menu->file->name,
465 prop->menu->lineno);
466 if (!expr_is_yes(prop->visible.expr)) {
467 str_append(r, _(" Depends on: "));
468 expr_gstr_print(prop->visible.expr, r);
469 str_append(r, "\n");
470 }
471 menu = prop->menu->parent;
472 for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent)
473 submenu[i++] = menu;
474 if (i > 0) {
475 str_printf(r, _(" Location:\n"));
476 for (j = 4; --i >= 0; j += 2) {
477 menu = submenu[i];
478 str_printf(r, "%*c-> %s", j, ' ', _(menu_get_prompt(menu)));
479 if (menu->sym) {
480 str_printf(r, " (%s [=%s])", menu->sym->name ?
481 menu->sym->name : _("<choice>"),
482 sym_get_string_value(menu->sym));
483 }
484 str_append(r, "\n");
485 }
486 }
487}
488
489void get_symbol_str(struct gstr *r, struct symbol *sym)
490{
491 bool hit;
492 struct property *prop;
493
494 if (sym && sym->name)
495 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
496 sym_get_string_value(sym));
497 for_all_prompts(sym, prop)
498 get_prompt_str(r, prop);
499 hit = false;
500 for_all_properties(sym, prop, P_SELECT) {
501 if (!hit) {
502 str_append(r, " Selects: ");
503 hit = true;
504 } else
505 str_printf(r, " && ");
506 expr_gstr_print(prop->expr, r);
507 }
508 if (hit)
509 str_append(r, "\n");
510 if (sym->rev_dep.expr) {
511 str_append(r, _(" Selected by: "));
512 expr_gstr_print(sym->rev_dep.expr, r);
513 str_append(r, "\n");
514 }
515 str_append(r, "\n\n");
516}
517
518void menu_get_ext_help(struct menu *menu, struct gstr *help)
519{
520 struct symbol *sym = menu->sym;
521
522 if (menu_has_help(menu)) {
523 if (sym->name) {
524 str_printf(help, "CONFIG_%s:\n\n", sym->name);
525 str_append(help, _(menu_get_help(menu)));
526 str_append(help, "\n");
527 }
528 } else {
529 str_append(help, nohelp_text);
530 }
531 if (sym)
532 get_symbol_str(help, sym);
533}
534
