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6#include <stdlib.h>
7#include <string.h>
8
9#define LKC_DIRECT_LINK
10#include "lkc.h"
11
12struct menu rootmenu;
13static struct menu **last_entry_ptr;
14
15struct file *file_list;
16struct file *current_file;
17
18static 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
28static 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
38void menu_init(void)
39{
40 current_entry = current_menu = &rootmenu;
41 last_entry_ptr = &rootmenu.list;
42}
43
44void 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
60void menu_end_entry(void)
61{
62}
63
64struct 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
71void menu_end_menu(void)
72{
73 last_entry_ptr = ¤t_menu->next;
74 current_menu = current_menu->parent;
75}
76
77struct 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
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
102void menu_add_dep(struct expr *dep)
103{
104 current_entry->dep = expr_alloc_and(current_entry->dep, menu_check_dep(dep));
105}
106
107void 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
122struct 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
145struct 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
150void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
151{
152 menu_add_prop(type, NULL, expr, dep);
153}
154
155void 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
160void 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 }
176}
177
178static int menu_range_valid_sym(struct symbol *sym, struct symbol *sym2)
179{
180 return sym2->type == S_INT || sym2->type == S_HEX ||
181 (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
182}
183
184void sym_check_prop(struct symbol *sym)
185{
186 struct property *prop;
187 struct symbol *sym2;
188 for (prop = sym->prop; prop; prop = prop->next) {
189 switch (prop->type) {
190 case P_DEFAULT:
191 if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
192 prop->expr->type != E_SYMBOL)
193 prop_warn(prop,
194 "default for config symbol '%'"
195 " must be a single symbol", sym->name);
196 break;
197 case P_SELECT:
198 sym2 = prop_get_symbol(prop);
199 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
200 prop_warn(prop,
201 "config symbol '%s' uses select, but is "
202 "not boolean or tristate", sym->name);
203 else if (sym2->type == S_UNKNOWN)
204 prop_warn(prop,
205 "'select' used by config symbol '%s' "
206 "refer to undefined symbol '%s'",
207 sym->name, sym2->name);
208 else if (sym2->type != S_BOOLEAN && 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
228void 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
239 for (menu = parent->list; menu; menu = menu->next) {
240 if (menu->sym) {
241 current_entry = parent;
242 menu_set_type(menu->sym->type);
243 current_entry = menu;
244 menu_set_type(sym->type);
245 break;
246 }
247 }
248 parentdep = expr_alloc_symbol(sym);
249 } else if (parent->prompt)
250 parentdep = parent->prompt->visible.expr;
251 else
252 parentdep = parent->dep;
253
254 for (menu = parent->list; menu; menu = menu->next) {
255 basedep = expr_transform(menu->dep);
256 basedep = expr_alloc_and(expr_copy(parentdep), basedep);
257 basedep = expr_eliminate_dups(basedep);
258 menu->dep = basedep;
259 if (menu->sym)
260 prop = menu->sym->prop;
261 else
262 prop = menu->prompt;
263 for (; prop; prop = prop->next) {
264 if (prop->menu != menu)
265 continue;
266 dep = expr_transform(prop->visible.expr);
267 dep = expr_alloc_and(expr_copy(basedep), dep);
268 dep = expr_eliminate_dups(dep);
269 if (menu->sym && menu->sym->type != S_TRISTATE)
270 dep = expr_trans_bool(dep);
271 prop->visible.expr = dep;
272 if (prop->type == P_SELECT) {
273 struct symbol *es = prop_get_symbol(prop);
274 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
275 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
276 }
277 }
278 }
279 for (menu = parent->list; menu; menu = menu->next)
280 menu_finalize(menu);
281 } else if (sym) {
282 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
283 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
284 basedep = expr_eliminate_dups(expr_transform(basedep));
285 last_menu = NULL;
286 for (menu = parent->next; menu; menu = menu->next) {
287 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
288 if (!expr_contains_symbol(dep, sym))
289 break;
290 if (expr_depends_symbol(dep, sym))
291 goto next;
292 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
293 dep = expr_eliminate_dups(expr_transform(dep));
294 dep2 = expr_copy(basedep);
295 expr_eliminate_eq(&dep, &dep2);
296 expr_free(dep);
297 if (!expr_is_yes(dep2)) {
298 expr_free(dep2);
299 break;
300 }
301 expr_free(dep2);
302 next:
303 menu_finalize(menu);
304 menu->parent = parent;
305 last_menu = menu;
306 }
307 if (last_menu) {
308 parent->list = parent->next;
309 parent->next = last_menu->next;
310 last_menu->next = NULL;
311 }
312 }
313 for (menu = parent->list; menu; menu = menu->next) {
314 if (sym && sym_is_choice(sym) && menu->sym) {
315 menu->sym->flags |= SYMBOL_CHOICEVAL;
316 if (!menu->prompt)
317 menu_warn(menu, "choice value must have a prompt");
318 for (prop = menu->sym->prop; prop; prop = prop->next) {
319 if (prop->type == P_PROMPT && prop->menu != menu) {
320 prop_warn(prop, "choice values "
321 "currently only support a "
322 "single prompt");
323 }
324 if (prop->type == P_DEFAULT)
325 prop_warn(prop, "defaults for choice "
326 "values not supported");
327 }
328 current_entry = menu;
329 menu_set_type(sym->type);
330 menu_add_symbol(P_CHOICE, sym, NULL);
331 prop = sym_get_choice_prop(sym);
332 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
333 ;
334 *ep = expr_alloc_one(E_CHOICE, NULL);
335 (*ep)->right.sym = menu->sym;
336 }
337 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
338 for (last_menu = menu->list; ; last_menu = last_menu->next) {
339 last_menu->parent = parent;
340 if (!last_menu->next)
341 break;
342 }
343 last_menu->next = menu->next;
344 menu->next = menu->list;
345 menu->list = NULL;
346 }
347 }
348
349 if (sym && !(sym->flags & SYMBOL_WARNED)) {
350 if (sym->type == S_UNKNOWN)
351 menu_warn(parent, "config symbol defined without type");
352
353 if (sym_is_choice(sym) && !parent->prompt)
354 menu_warn(parent, "choice must have a prompt");
355
356
357 sym_check_prop(sym);
358 sym->flags |= SYMBOL_WARNED;
359 }
360
361 if (sym && !sym_is_optional(sym) && parent->prompt) {
362 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
363 expr_alloc_and(parent->prompt->visible.expr,
364 expr_alloc_symbol(&symbol_mod)));
365 }
366}
367
368bool menu_is_visible(struct menu *menu)
369{
370 struct menu *child;
371 struct symbol *sym;
372 tristate visible;
373
374 if (!menu->prompt)
375 return false;
376 sym = menu->sym;
377 if (sym) {
378 sym_calc_value(sym);
379 visible = menu->prompt->visible.tri;
380 } else
381 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
382
383 if (visible != no)
384 return true;
385 if (!sym || sym_get_tristate_value(menu->sym) == no)
386 return false;
387
388 for (child = menu->list; child; child = child->next)
389 if (menu_is_visible(child))
390 return true;
391 return false;
392}
393
394const char *menu_get_prompt(struct menu *menu)
395{
396 if (menu->prompt)
397 return _(menu->prompt->text);
398 else if (menu->sym)
399 return _(menu->sym->name);
400 return NULL;
401}
402
403struct menu *menu_get_root_menu(struct menu *menu)
404{
405 return &rootmenu;
406}
407
408struct menu *menu_get_parent_menu(struct menu *menu)
409{
410 enum prop_type type;
411
412 for (; menu != &rootmenu; menu = menu->parent) {
413 type = menu->prompt ? menu->prompt->type : 0;
414 if (type == P_MENU)
415 break;
416 }
417 return menu;
418}
419
420
