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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 | ||
18 | static 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 | ||
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 | ||
64 | void menu_add_menu(void) | |
65 | { | |
66 | current_menu = current_entry; | |
67 | last_entry_ptr = ¤t_entry->list; | |
68 | } | |
69 | ||
70 | void menu_end_menu(void) | |
71 | { | |
72 | last_entry_ptr = ¤t_menu->next; | |
73 | current_menu = current_menu->parent; | |
74 | } | |
75 | ||
76 | struct expr *menu_check_dep(struct expr *e) | |
77 | { | |
78 | if (!e) | |
79 | return e; | |
80 | ||
81 | switch (e->type) { | |
82 | case E_NOT: | |
83 | e->left.expr = menu_check_dep(e->left.expr); | |
84 | break; | |
85 | case E_OR: | |
86 | case E_AND: | |
87 | e->left.expr = menu_check_dep(e->left.expr); | |
88 | e->right.expr = menu_check_dep(e->right.expr); | |
89 | break; | |
90 | case E_SYMBOL: | |
91 | /* change 'm' into 'm' && MODULES */ | |
92 | if (e->left.sym == &symbol_mod) | |
93 | return expr_alloc_and(e, expr_alloc_symbol(modules_sym)); | |
94 | break; | |
95 | default: | |
96 | break; | |
97 | } | |
98 | return e; | |
99 | } | |
100 | ||
101 | void menu_add_dep(struct expr *dep) | |
102 | { | |
103 | current_entry->dep = expr_alloc_and(current_entry->dep, menu_check_dep(dep)); | |
104 | } | |
105 | ||
106 | void menu_set_type(int type) | |
107 | { | |
108 | struct symbol *sym = current_entry->sym; | |
109 | ||
110 | if (sym->type == type) | |
111 | return; | |
112 | if (sym->type == S_UNKNOWN) { | |
113 | sym->type = type; | |
114 | return; | |
115 | } | |
116 | menu_warn(current_entry, "type of '%s' redefined from '%s' to '%s'\n", | |
117 | sym->name ? sym->name : "<choice>", | |
118 | sym_type_name(sym->type), sym_type_name(type)); | |
119 | } | |
120 | ||
121 | struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep) | |
122 | { | |
123 | struct property *prop = prop_alloc(type, current_entry->sym); | |
124 | ||
125 | prop->menu = current_entry; | |
126 | prop->text = prompt; | |
127 | prop->expr = expr; | |
128 | prop->visible.expr = menu_check_dep(dep); | |
129 | ||
130 | if (prompt) { | |
131 | if (current_entry->prompt) | |
132 | menu_warn(current_entry, "prompt redefined\n"); | |
133 | current_entry->prompt = prop; | |
134 | } | |
135 | ||
136 | return prop; | |
137 | } | |
138 | ||
139 | void menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep) | |
140 | { | |
141 | menu_add_prop(type, prompt, NULL, dep); | |
142 | } | |
143 | ||
144 | void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep) | |
145 | { | |
146 | menu_add_prop(type, NULL, expr, dep); | |
147 | } | |
148 | ||
149 | void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep) | |
150 | { | |
151 | menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep); | |
152 | } | |
153 | ||
154 | void sym_check_prop(struct symbol *sym) | |
155 | { | |
156 | struct property *prop; | |
157 | struct symbol *sym2; | |
158 | for (prop = sym->prop; prop; prop = prop->next) { | |
159 | switch (prop->type) { | |
160 | case P_DEFAULT: | |
161 | if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) && | |
162 | prop->expr->type != E_SYMBOL) | |
163 | prop_warn(prop, | |
164 | "default for config symbol '%'" | |
165 | " must be a single symbol", sym->name); | |
166 | break; | |
167 | case P_SELECT: | |
168 | sym2 = prop_get_symbol(prop); | |
169 | if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE) | |
170 | prop_warn(prop, | |
171 | "config symbol '%s' uses select, but is " | |
172 | "not boolean or tristate", sym->name); | |
173 | else if (sym2->type == S_UNKNOWN) | |
174 | prop_warn(prop, | |
175 | "'select' used by config symbol '%s' " | |
176 | "refer to undefined symbol '%s'", | |
177 | sym->name, sym2->name); | |
178 | else if (sym2->type != S_BOOLEAN && sym2->type != S_TRISTATE) | |
179 | prop_warn(prop, | |
180 | "'%s' has wrong type. 'select' only " | |
181 | "accept arguments of boolean and " | |
182 | "tristate type", sym2->name); | |
183 | break; | |
184 | case P_RANGE: | |
185 | if (sym->type != S_INT && sym->type != S_HEX) | |
186 | prop_warn(prop, "range is only allowed " | |
187 | "for int or hex symbols"); | |
188 | if (!sym_string_valid(sym, prop->expr->left.sym->name) || | |
189 | !sym_string_valid(sym, prop->expr->right.sym->name)) | |
190 | prop_warn(prop, "range is invalid"); | |
191 | break; | |
192 | default: | |
193 | ; | |
194 | } | |
195 | } | |
196 | } | |
197 | ||
198 | void menu_finalize(struct menu *parent) | |
199 | { | |
200 | struct menu *menu, *last_menu; | |
201 | struct symbol *sym; | |
202 | struct property *prop; | |
203 | struct expr *parentdep, *basedep, *dep, *dep2, **ep; | |
204 | ||
205 | sym = parent->sym; | |
206 | if (parent->list) { | |
207 | if (sym && sym_is_choice(sym)) { | |
208 | /* find the first choice value and find out choice type */ | |
209 | for (menu = parent->list; menu; menu = menu->next) { | |
210 | if (menu->sym) { | |
211 | current_entry = parent; | |
212 | menu_set_type(menu->sym->type); | |
213 | current_entry = menu; | |
214 | menu_set_type(sym->type); | |
215 | break; | |
216 | } | |
217 | } | |
218 | parentdep = expr_alloc_symbol(sym); | |
219 | } else if (parent->prompt) | |
220 | parentdep = parent->prompt->visible.expr; | |
221 | else | |
222 | parentdep = parent->dep; | |
223 | ||
224 | for (menu = parent->list; menu; menu = menu->next) { | |
225 | basedep = expr_transform(menu->dep); | |
226 | basedep = expr_alloc_and(expr_copy(parentdep), basedep); | |
227 | basedep = expr_eliminate_dups(basedep); | |
228 | menu->dep = basedep; | |
229 | if (menu->sym) | |
230 | prop = menu->sym->prop; | |
231 | else | |
232 | prop = menu->prompt; | |
233 | for (; prop; prop = prop->next) { | |
234 | if (prop->menu != menu) | |
235 | continue; | |
236 | dep = expr_transform(prop->visible.expr); | |
237 | dep = expr_alloc_and(expr_copy(basedep), dep); | |
238 | dep = expr_eliminate_dups(dep); | |
239 | if (menu->sym && menu->sym->type != S_TRISTATE) | |
240 | dep = expr_trans_bool(dep); | |
241 | prop->visible.expr = dep; | |
242 | if (prop->type == P_SELECT) { | |
243 | struct symbol *es = prop_get_symbol(prop); | |
244 | es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr, | |
245 | expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep))); | |
246 | } | |
247 | } | |
248 | } | |
249 | for (menu = parent->list; menu; menu = menu->next) | |
250 | menu_finalize(menu); | |
251 | } else if (sym) { | |
252 | basedep = parent->prompt ? parent->prompt->visible.expr : NULL; | |
253 | basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no); | |
254 | basedep = expr_eliminate_dups(expr_transform(basedep)); | |
255 | last_menu = NULL; | |
256 | for (menu = parent->next; menu; menu = menu->next) { | |
257 | dep = menu->prompt ? menu->prompt->visible.expr : menu->dep; | |
258 | if (!expr_contains_symbol(dep, sym)) | |
259 | break; | |
260 | if (expr_depends_symbol(dep, sym)) | |
261 | goto next; | |
262 | dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no); | |
263 | dep = expr_eliminate_dups(expr_transform(dep)); | |
264 | dep2 = expr_copy(basedep); | |
265 | expr_eliminate_eq(&dep, &dep2); | |
266 | expr_free(dep); | |
267 | if (!expr_is_yes(dep2)) { | |
268 | expr_free(dep2); | |
269 | break; | |
270 | } | |
271 | expr_free(dep2); | |
272 | next: | |
273 | menu_finalize(menu); | |
274 | menu->parent = parent; | |
275 | last_menu = menu; | |
276 | } | |
277 | if (last_menu) { | |
278 | parent->list = parent->next; | |
279 | parent->next = last_menu->next; | |
280 | last_menu->next = NULL; | |
281 | } | |
282 | } | |
283 | for (menu = parent->list; menu; menu = menu->next) { | |
284 | if (sym && sym_is_choice(sym) && menu->sym) { | |
285 | menu->sym->flags |= SYMBOL_CHOICEVAL; | |
286 | if (!menu->prompt) | |
287 | menu_warn(menu, "choice value must have a prompt"); | |
288 | for (prop = menu->sym->prop; prop; prop = prop->next) { | |
289 | if (prop->type == P_PROMPT && prop->menu != menu) { | |
290 | prop_warn(prop, "choice values " | |
291 | "currently only support a " | |
292 | "single prompt"); | |
293 | } | |
294 | if (prop->type == P_DEFAULT) | |
295 | prop_warn(prop, "defaults for choice " | |
296 | "values not supported"); | |
297 | } | |
298 | current_entry = menu; | |
299 | menu_set_type(sym->type); | |
300 | menu_add_symbol(P_CHOICE, sym, NULL); | |
301 | prop = sym_get_choice_prop(sym); | |
302 | for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr) | |
303 | ; | |
304 | *ep = expr_alloc_one(E_CHOICE, NULL); | |
305 | (*ep)->right.sym = menu->sym; | |
306 | } | |
307 | if (menu->list && (!menu->prompt || !menu->prompt->text)) { | |
308 | for (last_menu = menu->list; ; last_menu = last_menu->next) { | |
309 | last_menu->parent = parent; | |
310 | if (!last_menu->next) | |
311 | break; | |
312 | } | |
313 | last_menu->next = menu->next; | |
314 | menu->next = menu->list; | |
315 | menu->list = NULL; | |
316 | } | |
317 | } | |
318 | ||
319 | if (sym && !(sym->flags & SYMBOL_WARNED)) { | |
320 | if (sym->type == S_UNKNOWN) | |
321 | menu_warn(parent, "config symbol defined " | |
322 | "without type\n"); | |
323 | ||
324 | if (sym_is_choice(sym) && !parent->prompt) | |
325 | menu_warn(parent, "choice must have a prompt\n"); | |
326 | ||
327 | /* Check properties connected to this symbol */ | |
328 | sym_check_prop(sym); | |
329 | sym->flags |= SYMBOL_WARNED; | |
330 | } | |
331 | ||
332 | if (sym && !sym_is_optional(sym) && parent->prompt) { | |
333 | sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr, | |
334 | expr_alloc_and(parent->prompt->visible.expr, | |
335 | expr_alloc_symbol(&symbol_mod))); | |
336 | } | |
337 | } | |
338 | ||
339 | bool menu_is_visible(struct menu *menu) | |
340 | { | |
341 | struct menu *child; | |
342 | struct symbol *sym; | |
343 | tristate visible; | |
344 | ||
345 | if (!menu->prompt) | |
346 | return false; | |
347 | sym = menu->sym; | |
348 | if (sym) { | |
349 | sym_calc_value(sym); | |
350 | visible = menu->prompt->visible.tri; | |
351 | } else | |
352 | visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr); | |
353 | ||
354 | if (visible != no) | |
355 | return true; | |
356 | if (!sym || sym_get_tristate_value(menu->sym) == no) | |
357 | return false; | |
358 | ||
359 | for (child = menu->list; child; child = child->next) | |
360 | if (menu_is_visible(child)) | |
361 | return true; | |
362 | return false; | |
363 | } | |
364 | ||
365 | const char *menu_get_prompt(struct menu *menu) | |
366 | { | |
367 | if (menu->prompt) | |
368 | return menu->prompt->text; | |
369 | else if (menu->sym) | |
370 | return menu->sym->name; | |
371 | return NULL; | |
372 | } | |
373 | ||
374 | struct menu *menu_get_root_menu(struct menu *menu) | |
375 | { | |
376 | return &rootmenu; | |
377 | } | |
378 | ||
379 | struct menu *menu_get_parent_menu(struct menu *menu) | |
380 | { | |
381 | enum prop_type type; | |
382 | ||
383 | for (; menu != &rootmenu; menu = menu->parent) { | |
384 | type = menu->prompt ? menu->prompt->type : 0; | |
385 | if (type == P_MENU) | |
386 | break; | |
387 | } | |
388 | return menu; | |
389 | } | |
390 |