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
menu_warn(struct menu * menu,const char * fmt,...)18 void menu_warn(struct menu *menu, const char *fmt, ...)
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
prop_warn(struct property * prop,const char * fmt,...)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
menu_init(void)38 void menu_init(void)
39 {
40 current_entry = current_menu = &rootmenu;
41 last_entry_ptr = &rootmenu.list;
42 }
43
menu_add_entry(struct symbol * sym)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
menu_end_entry(void)60 void menu_end_entry(void)
61 {
62 }
63
menu_add_menu(void)64 struct menu *menu_add_menu(void)
65 {
66 menu_end_entry();
67 last_entry_ptr = ¤t_entry->list;
68 return current_menu = current_entry;
69 }
70
menu_end_menu(void)71 void menu_end_menu(void)
72 {
73 last_entry_ptr = ¤t_menu->next;
74 current_menu = current_menu->parent;
75 }
76
menu_check_dep(struct expr * e)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
menu_add_dep(struct expr * dep)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
menu_set_type(int type)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 }
117 menu_warn(current_entry, "type of '%s' redefined from '%s' to '%s'",
118 sym->name ? sym->name : "<choice>",
119 sym_type_name(sym->type), sym_type_name(type));
120 }
121
menu_add_prop(enum prop_type type,char * prompt,struct expr * expr,struct expr * dep)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;
127 prop->expr = expr;
128 prop->visible.expr = menu_check_dep(dep);
129
130 if (prompt) {
131 if (isspace(*prompt)) {
132 prop_warn(prop, "leading whitespace ignored");
133 while (isspace(*prompt))
134 prompt++;
135 }
136 if (current_entry->prompt)
137 prop_warn(prop, "prompt redefined");
138 current_entry->prompt = prop;
139 }
140 prop->text = prompt;
141
142 return prop;
143 }
144
menu_add_prompt(enum prop_type type,char * prompt,struct expr * dep)145 struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
146 {
147 return menu_add_prop(type, prompt, NULL, dep);
148 }
149
menu_add_expr(enum prop_type type,struct expr * expr,struct expr * dep)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
menu_add_symbol(enum prop_type type,struct symbol * sym,struct expr * dep)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
menu_add_option(int token,char * arg)160 void menu_add_option(int token, char *arg)
161 {
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;
175 case T_OPT_ENV:
176 prop_add_env(arg);
177 break;
178 }
179 }
180
menu_range_valid_sym(struct symbol * sym,struct symbol * sym2)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
sym_check_prop(struct symbol * sym)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);
206 else if (sym2->type != S_UNKNOWN &&
207 sym2->type != S_BOOLEAN &&
208 sym2->type != S_TRISTATE)
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");
218 if (!menu_range_valid_sym(sym, prop->expr->left.sym) ||
219 !menu_range_valid_sym(sym, prop->expr->right.sym))
220 prop_warn(prop, "range is invalid");
221 break;
222 default:
223 ;
224 }
225 }
226 }
227
menu_finalize(struct menu * parent)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)) {
238 if (sym->type == S_UNKNOWN) {
239 /* find the first choice value to find out choice type */
240 current_entry = parent;
241 for (menu = parent->list; menu; menu = menu->next) {
242 if (menu->sym && menu->sym->type != S_UNKNOWN) {
243 menu_set_type(menu->sym->type);
244 break;
245 }
246 }
247 }
248 /* set the type of the remaining choice values */
249 for (menu = parent->list; menu; menu = menu->next) {
250 current_entry = menu;
251 if (menu->sym && menu->sym->type == S_UNKNOWN)
252 menu_set_type(sym->type);
253 }
254 parentdep = expr_alloc_symbol(sym);
255 } else if (parent->prompt)
256 parentdep = parent->prompt->visible.expr;
257 else
258 parentdep = parent->dep;
259
260 for (menu = parent->list; menu; menu = menu->next) {
261 basedep = expr_transform(menu->dep);
262 basedep = expr_alloc_and(expr_copy(parentdep), basedep);
263 basedep = expr_eliminate_dups(basedep);
264 menu->dep = basedep;
265 if (menu->sym)
266 prop = menu->sym->prop;
267 else
268 prop = menu->prompt;
269 for (; prop; prop = prop->next) {
270 if (prop->menu != menu)
271 continue;
272 dep = expr_transform(prop->visible.expr);
273 dep = expr_alloc_and(expr_copy(basedep), dep);
274 dep = expr_eliminate_dups(dep);
275 if (menu->sym && menu->sym->type != S_TRISTATE)
276 dep = expr_trans_bool(dep);
277 prop->visible.expr = dep;
278 if (prop->type == P_SELECT) {
279 struct symbol *es = prop_get_symbol(prop);
280 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
281 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
282 }
283 }
284 }
285 for (menu = parent->list; menu; menu = menu->next)
286 menu_finalize(menu);
287 } else if (sym) {
288 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
289 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
290 basedep = expr_eliminate_dups(expr_transform(basedep));
291 last_menu = NULL;
292 for (menu = parent->next; menu; menu = menu->next) {
293 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
294 if (!expr_contains_symbol(dep, sym))
295 break;
296 if (expr_depends_symbol(dep, sym))
297 goto next;
298 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
299 dep = expr_eliminate_dups(expr_transform(dep));
300 dep2 = expr_copy(basedep);
301 expr_eliminate_eq(&dep, &dep2);
302 expr_free(dep);
303 if (!expr_is_yes(dep2)) {
304 expr_free(dep2);
305 break;
306 }
307 expr_free(dep2);
308 next:
309 menu_finalize(menu);
310 menu->parent = parent;
311 last_menu = menu;
312 }
313 if (last_menu) {
314 parent->list = parent->next;
315 parent->next = last_menu->next;
316 last_menu->next = NULL;
317 }
318 }
319 for (menu = parent->list; menu; menu = menu->next) {
320 if (sym && sym_is_choice(sym) &&
321 menu->sym && !sym_is_choice_value(menu->sym)) {
322 current_entry = menu;
323 menu->sym->flags |= SYMBOL_CHOICEVAL;
324 if (!menu->prompt)
325 menu_warn(menu, "choice value must have a prompt");
326 for (prop = menu->sym->prop; prop; prop = prop->next) {
327 if (prop->type == P_DEFAULT)
328 prop_warn(prop, "defaults for choice "
329 "values not supported");
330 if (prop->menu == menu)
331 continue;
332 if (prop->type == P_PROMPT &&
333 prop->menu->parent->sym != sym)
334 prop_warn(prop, "choice value used outside its choice group");
335 }
336 /* Non-tristate choice values of tristate choices must
337 * depend on the choice being set to Y. The choice
338 * values' dependencies were propagated to their
339 * properties above, so the change here must be re-
340 * propagated.
341 */
342 if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
343 basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
344 menu->dep = expr_alloc_and(basedep, menu->dep);
345 for (prop = menu->sym->prop; prop; prop = prop->next) {
346 if (prop->menu != menu)
347 continue;
348 prop->visible.expr = expr_alloc_and(expr_copy(basedep),
349 prop->visible.expr);
350 }
351 }
352 menu_add_symbol(P_CHOICE, sym, NULL);
353 prop = sym_get_choice_prop(sym);
354 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
355 ;
356 *ep = expr_alloc_one(E_LIST, NULL);
357 (*ep)->right.sym = menu->sym;
358 }
359 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
360 for (last_menu = menu->list; ; last_menu = last_menu->next) {
361 last_menu->parent = parent;
362 if (!last_menu->next)
363 break;
364 }
365 last_menu->next = menu->next;
366 menu->next = menu->list;
367 menu->list = NULL;
368 }
369 }
370
371 if (sym && !(sym->flags & SYMBOL_WARNED)) {
372 if (sym->type == S_UNKNOWN)
373 menu_warn(parent, "config symbol defined without type");
374
375 if (sym_is_choice(sym) && !parent->prompt)
376 menu_warn(parent, "choice must have a prompt");
377
378 /* Check properties connected to this symbol */
379 sym_check_prop(sym);
380 sym->flags |= SYMBOL_WARNED;
381 }
382
383 if (sym && !sym_is_optional(sym) && parent->prompt) {
384 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
385 expr_alloc_and(parent->prompt->visible.expr,
386 expr_alloc_symbol(&symbol_mod)));
387 }
388 }
389
menu_is_visible(struct menu * menu)390 bool menu_is_visible(struct menu *menu)
391 {
392 struct menu *child;
393 struct symbol *sym;
394 tristate visible;
395
396 if (!menu->prompt)
397 return false;
398 sym = menu->sym;
399 if (sym) {
400 sym_calc_value(sym);
401 visible = menu->prompt->visible.tri;
402 } else
403 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
404
405 if (visible != no)
406 return true;
407 if (!sym || sym_get_tristate_value(menu->sym) == no)
408 return false;
409
410 for (child = menu->list; child; child = child->next)
411 if (menu_is_visible(child))
412 return true;
413 return false;
414 }
415
menu_get_prompt(struct menu * menu)416 const char *menu_get_prompt(struct menu *menu)
417 {
418 if (menu->prompt)
419 return menu->prompt->text;
420 else if (menu->sym)
421 return menu->sym->name;
422 return NULL;
423 }
424
menu_get_root_menu(struct menu * menu)425 struct menu *menu_get_root_menu(struct menu *menu)
426 {
427 return &rootmenu;
428 }
429
menu_get_parent_menu(struct menu * menu)430 struct menu *menu_get_parent_menu(struct menu *menu)
431 {
432 enum prop_type type;
433
434 for (; menu != &rootmenu; menu = menu->parent) {
435 type = menu->prompt ? menu->prompt->type : 0;
436 if (type == P_MENU)
437 break;
438 }
439 return menu;
440 }
441
menu_has_help(struct menu * menu)442 bool menu_has_help(struct menu *menu)
443 {
444 return menu->help != NULL;
445 }
446
menu_get_help(struct menu * menu)447 const char *menu_get_help(struct menu *menu)
448 {
449 if (menu->help)
450 return menu->help;
451 else
452 return "";
453 }
454