20fda9b2fc5871e49316a1b225e45fc3773aee4a
[openwrt/svn-archive/archive.git] / scripts / config / menu.c
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 struct menu *menu_add_menu(void)
65 {
66 menu_end_entry();
67 last_entry_ptr = &current_entry->list;
68 return current_menu = current_entry;
69 }
70
71 void menu_end_menu(void)
72 {
73 last_entry_ptr = &current_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 /* tristate always enabled */
92 #if 0
93 case E_SYMBOL:
94 /* change 'm' into 'm' && MODULES */
95 if (e->left.sym == &symbol_mod)
96 return expr_alloc_and(e, expr_alloc_symbol(modules_sym));
97 break;
98 #endif
99 default:
100 break;
101 }
102 return e;
103 }
104
105 void menu_add_dep(struct expr *dep)
106 {
107 current_entry->dep = expr_alloc_and(current_entry->dep, menu_check_dep(dep));
108 }
109
110 void 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'\n",
121 sym->name ? sym->name : "<choice>",
122 sym_type_name(sym->type), sym_type_name(type));
123 }
124
125 struct 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->text = prompt;
131 prop->expr = expr;
132 prop->visible.expr = menu_check_dep(dep);
133
134 if (prompt) {
135 if (current_entry->prompt)
136 menu_warn(current_entry, "prompt redefined\n");
137 current_entry->prompt = prop;
138 }
139
140 return prop;
141 }
142
143 struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
144 {
145 return menu_add_prop(type, prompt, NULL, dep);
146 }
147
148 void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
149 {
150 menu_add_prop(type, NULL, expr, dep);
151 }
152
153 void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
154 {
155 menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
156 }
157
158 static int menu_range_valid_sym(struct symbol *sym, struct symbol *sym2)
159 {
160 return sym2->type == S_INT || sym2->type == S_HEX ||
161 (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
162 }
163
164 void sym_check_prop(struct symbol *sym)
165 {
166 struct property *prop;
167 struct symbol *sym2;
168 for (prop = sym->prop; prop; prop = prop->next) {
169 switch (prop->type) {
170 case P_DEFAULT:
171 if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
172 prop->expr->type != E_SYMBOL)
173 prop_warn(prop,
174 "default for config symbol '%'"
175 " must be a single symbol", sym->name);
176 break;
177 case P_SELECT:
178 sym2 = prop_get_symbol(prop);
179 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
180 prop_warn(prop,
181 "config symbol '%s' uses select, but is "
182 "not boolean or tristate", sym->name);
183 else if (sym2->type == S_UNKNOWN)
184 prop_warn(prop,
185 "'select' used by config symbol '%s' "
186 "refer to undefined symbol '%s'",
187 sym->name, sym2->name);
188 else if (sym2->type != S_BOOLEAN && sym2->type != S_TRISTATE)
189 prop_warn(prop,
190 "'%s' has wrong type. 'select' only "
191 "accept arguments of boolean and "
192 "tristate type", sym2->name);
193 break;
194 case P_RANGE:
195 if (sym->type != S_INT && sym->type != S_HEX)
196 prop_warn(prop, "range is only allowed "
197 "for int or hex symbols");
198 if (!menu_range_valid_sym(sym, prop->expr->left.sym) ||
199 !menu_range_valid_sym(sym, prop->expr->right.sym))
200 prop_warn(prop, "range is invalid");
201 break;
202 default:
203 ;
204 }
205 }
206 }
207
208 void menu_finalize(struct menu *parent)
209 {
210 struct menu *menu, *last_menu;
211 struct symbol *sym;
212 struct property *prop;
213 struct expr *parentdep, *basedep, *dep, *dep2, **ep;
214
215 sym = parent->sym;
216 if (parent->list) {
217 if (sym && sym_is_choice(sym)) {
218 /* find the first choice value and find out choice type */
219 for (menu = parent->list; menu; menu = menu->next) {
220 if (menu->sym) {
221 current_entry = parent;
222 menu_set_type(menu->sym->type);
223 current_entry = menu;
224 menu_set_type(sym->type);
225 break;
226 }
227 }
228 parentdep = expr_alloc_symbol(sym);
229 } else if (parent->prompt)
230 parentdep = parent->prompt->visible.expr;
231 else
232 parentdep = parent->dep;
233
234 for (menu = parent->list; menu; menu = menu->next) {
235 basedep = expr_transform(menu->dep);
236 basedep = expr_alloc_and(expr_copy(parentdep), basedep);
237 basedep = expr_eliminate_dups(basedep);
238 menu->dep = basedep;
239 if (menu->sym)
240 prop = menu->sym->prop;
241 else
242 prop = menu->prompt;
243 for (; prop; prop = prop->next) {
244 if (prop->menu != menu)
245 continue;
246 dep = expr_transform(prop->visible.expr);
247 dep = expr_alloc_and(expr_copy(basedep), dep);
248 dep = expr_eliminate_dups(dep);
249 if (menu->sym && menu->sym->type != S_TRISTATE)
250 dep = expr_trans_bool(dep);
251 prop->visible.expr = dep;
252 if (prop->type == P_SELECT) {
253 struct symbol *es = prop_get_symbol(prop);
254 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
255 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
256 }
257 }
258 }
259 for (menu = parent->list; menu; menu = menu->next)
260 menu_finalize(menu);
261 } else if (sym) {
262 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
263 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
264 basedep = expr_eliminate_dups(expr_transform(basedep));
265 last_menu = NULL;
266 for (menu = parent->next; menu; menu = menu->next) {
267 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
268 if (!expr_contains_symbol(dep, sym))
269 break;
270 if (expr_depends_symbol(dep, sym))
271 goto next;
272 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
273 dep = expr_eliminate_dups(expr_transform(dep));
274 dep2 = expr_copy(basedep);
275 expr_eliminate_eq(&dep, &dep2);
276 expr_free(dep);
277 if (!expr_is_yes(dep2)) {
278 expr_free(dep2);
279 break;
280 }
281 expr_free(dep2);
282 next:
283 menu_finalize(menu);
284 menu->parent = parent;
285 last_menu = menu;
286 }
287 if (last_menu) {
288 parent->list = parent->next;
289 parent->next = last_menu->next;
290 last_menu->next = NULL;
291 }
292 }
293 for (menu = parent->list; menu; menu = menu->next) {
294 if (sym && sym_is_choice(sym) && menu->sym) {
295 menu->sym->flags |= SYMBOL_CHOICEVAL;
296 if (!menu->prompt)
297 menu_warn(menu, "choice value must have a prompt");
298 for (prop = menu->sym->prop; prop; prop = prop->next) {
299 if (prop->type == P_PROMPT && prop->menu != menu) {
300 prop_warn(prop, "choice values "
301 "currently only support a "
302 "single prompt");
303 }
304 if (prop->type == P_DEFAULT)
305 prop_warn(prop, "defaults for choice "
306 "values not supported");
307 }
308 current_entry = menu;
309 menu_set_type(sym->type);
310 menu_add_symbol(P_CHOICE, sym, NULL);
311 prop = sym_get_choice_prop(sym);
312 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
313 ;
314 *ep = expr_alloc_one(E_CHOICE, NULL);
315 (*ep)->right.sym = menu->sym;
316 }
317 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
318 for (last_menu = menu->list; ; last_menu = last_menu->next) {
319 last_menu->parent = parent;
320 if (!last_menu->next)
321 break;
322 }
323 last_menu->next = menu->next;
324 menu->next = menu->list;
325 menu->list = NULL;
326 }
327 }
328
329 if (sym && !(sym->flags & SYMBOL_WARNED)) {
330 if (sym->type == S_UNKNOWN)
331 menu_warn(parent, "config symbol defined "
332 "without type\n");
333
334 if (sym_is_choice(sym) && !parent->prompt)
335 menu_warn(parent, "choice must have a prompt\n");
336
337 /* Check properties connected to this symbol */
338 sym_check_prop(sym);
339 sym->flags |= SYMBOL_WARNED;
340 }
341
342 if (sym && !sym_is_optional(sym) && parent->prompt) {
343 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
344 expr_alloc_and(parent->prompt->visible.expr,
345 expr_alloc_symbol(&symbol_mod)));
346 }
347 }
348
349 bool menu_is_visible(struct menu *menu)
350 {
351 struct menu *child;
352 struct symbol *sym;
353 tristate visible;
354
355 if (!menu->prompt)
356 return false;
357 sym = menu->sym;
358 if (sym) {
359 sym_calc_value(sym);
360 visible = menu->prompt->visible.tri;
361 } else
362 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
363
364 if (visible != no)
365 return true;
366 if (!sym || sym_get_tristate_value(menu->sym) == no)
367 return false;
368
369 for (child = menu->list; child; child = child->next)
370 if (menu_is_visible(child))
371 return true;
372 return false;
373 }
374
375 const char *menu_get_prompt(struct menu *menu)
376 {
377 if (menu->prompt)
378 return _(menu->prompt->text);
379 else if (menu->sym)
380 return _(menu->sym->name);
381 return NULL;
382 }
383
384 struct menu *menu_get_root_menu(struct menu *menu)
385 {
386 return &rootmenu;
387 }
388
389 struct menu *menu_get_parent_menu(struct menu *menu)
390 {
391 enum prop_type type;
392
393 for (; menu != &rootmenu; menu = menu->parent) {
394 type = menu->prompt ? menu->prompt->type : 0;
395 if (type == P_MENU)
396 break;
397 }
398 return menu;
399 }
400