[uboot-lantiq] cleanup configuration handling
[openwrt.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 void menu_add_dep(struct expr *dep)
78 {
79 current_entry->dep = expr_alloc_and(current_entry->dep, dep);
80 }
81
82 void menu_set_type(int type)
83 {
84 struct symbol *sym = current_entry->sym;
85
86 if (sym->type == type)
87 return;
88 if (sym->type == S_UNKNOWN) {
89 sym->type = type;
90 return;
91 }
92 menu_warn(current_entry, "type of '%s' redefined from '%s' to '%s'\n",
93 sym->name ? sym->name : "<choice>",
94 sym_type_name(sym->type), sym_type_name(type));
95 }
96
97 struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep)
98 {
99 struct property *prop = prop_alloc(type, current_entry->sym);
100
101 prop->menu = current_entry;
102 prop->text = prompt;
103 prop->expr = expr;
104 prop->visible.expr = dep;
105
106 if (prompt) {
107 if (current_entry->prompt)
108 menu_warn(current_entry, "prompt redefined\n");
109 current_entry->prompt = prop;
110 }
111
112 return prop;
113 }
114
115 struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
116 {
117 return menu_add_prop(type, prompt, NULL, dep);
118 }
119
120 void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
121 {
122 menu_add_prop(type, NULL, expr, dep);
123 }
124
125 void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
126 {
127 menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
128 }
129
130 static int menu_range_valid_sym(struct symbol *sym, struct symbol *sym2)
131 {
132 return sym2->type == S_INT || sym2->type == S_HEX ||
133 (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
134 }
135
136 void sym_check_prop(struct symbol *sym)
137 {
138 struct property *prop;
139 struct symbol *sym2;
140 for (prop = sym->prop; prop; prop = prop->next) {
141 switch (prop->type) {
142 case P_DEFAULT:
143 if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
144 prop->expr->type != E_SYMBOL)
145 prop_warn(prop,
146 "default for config symbol '%'"
147 " must be a single symbol", sym->name);
148 break;
149 case P_SELECT:
150 sym2 = prop_get_symbol(prop);
151 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
152 prop_warn(prop,
153 "config symbol '%s' uses select, but is "
154 "not boolean or tristate", sym->name);
155 else if (sym2->type == S_UNKNOWN)
156 prop_warn(prop,
157 "'select' used by config symbol '%s' "
158 "refer to undefined symbol '%s'",
159 sym->name, sym2->name);
160 else if (sym2->type != S_BOOLEAN && sym2->type != S_TRISTATE)
161 prop_warn(prop,
162 "'%s' has wrong type. 'select' only "
163 "accept arguments of boolean and "
164 "tristate type", sym2->name);
165 break;
166 case P_DESELECT:
167 sym2 = prop_get_symbol(prop);
168 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
169 prop_warn(prop,
170 "config symbol '%s' uses deselect, but is "
171 "not boolean or tristate", sym->name);
172 else if (sym2->type == S_UNKNOWN)
173 prop_warn(prop,
174 "'deselect' used by config symbol '%s' "
175 "refer to undefined symbol '%s'",
176 sym->name, sym2->name);
177 else if (sym2->type != S_BOOLEAN && sym2->type != S_TRISTATE)
178 prop_warn(prop,
179 "'%s' has wrong type. 'deselect' only "
180 "accept arguments of boolean and "
181 "tristate type", sym2->name);
182 break;
183 case P_RANGE:
184 if (sym->type != S_INT && sym->type != S_HEX)
185 prop_warn(prop, "range is only allowed "
186 "for int or hex symbols");
187 if (!menu_range_valid_sym(sym, prop->expr->left.sym) ||
188 !menu_range_valid_sym(sym, prop->expr->right.sym))
189 prop_warn(prop, "range is invalid");
190 break;
191 default:
192 ;
193 }
194 }
195 }
196
197 void menu_finalize(struct menu *parent)
198 {
199 struct menu *menu, *last_menu;
200 struct symbol *sym;
201 struct property *prop;
202 struct expr *parentdep, *basedep, *dep, *dep2, **ep;
203
204 sym = parent->sym;
205 if (parent->list) {
206 if (sym && sym_is_choice(sym)) {
207 /* find the first choice value and find out choice type */
208 for (menu = parent->list; menu; menu = menu->next) {
209 if (menu->sym) {
210 current_entry = parent;
211 menu_set_type(menu->sym->type);
212 current_entry = menu;
213 menu_set_type(sym->type);
214 break;
215 }
216 }
217 parentdep = expr_alloc_symbol(sym);
218 } else if (parent->prompt)
219 parentdep = parent->prompt->visible.expr;
220 else
221 parentdep = parent->dep;
222
223 for (menu = parent->list; menu; menu = menu->next) {
224 basedep = expr_transform(menu->dep);
225 basedep = expr_alloc_and(expr_copy(parentdep), basedep);
226 basedep = expr_eliminate_dups(basedep);
227 menu->dep = basedep;
228 if (menu->sym)
229 prop = menu->sym->prop;
230 else
231 prop = menu->prompt;
232
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(menu->dep), 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 if (prop->type == P_DESELECT) {
248 struct symbol *es = prop_get_symbol(prop);
249 es->rev_dep_inv.expr = expr_alloc_or(es->rev_dep_inv.expr,
250 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
251 }
252 }
253 }
254 for (menu = parent->list; menu; menu = menu->next)
255 menu_finalize(menu);
256 } else if (sym) {
257 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
258 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
259 basedep = expr_eliminate_dups(expr_transform(basedep));
260 last_menu = NULL;
261 for (menu = parent->next; menu; menu = menu->next) {
262 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
263 if (!expr_contains_symbol(dep, sym))
264 break;
265 if (expr_depends_symbol(dep, sym))
266 goto next;
267 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
268 dep = expr_eliminate_dups(expr_transform(dep));
269 dep2 = expr_copy(basedep);
270 expr_eliminate_eq(&dep, &dep2);
271 expr_free(dep);
272 if (!expr_is_yes(dep2)) {
273 expr_free(dep2);
274 break;
275 }
276 expr_free(dep2);
277 next:
278 menu_finalize(menu);
279 menu->parent = parent;
280 last_menu = menu;
281 }
282 if (last_menu) {
283 parent->list = parent->next;
284 parent->next = last_menu->next;
285 last_menu->next = NULL;
286 }
287 }
288 for (menu = parent->list; menu; menu = menu->next) {
289 if (sym && sym_is_choice(sym) && menu->sym) {
290 menu->sym->flags |= SYMBOL_CHOICEVAL;
291 if (!menu->prompt)
292 menu_warn(menu, "choice value must have a prompt");
293 for (prop = menu->sym->prop; prop; prop = prop->next) {
294 if (prop->type == P_PROMPT && prop->menu != menu) {
295 prop_warn(prop, "choice values "
296 "currently only support a "
297 "single prompt");
298 }
299 }
300 current_entry = menu;
301 menu_set_type(sym->type);
302 menu_add_symbol(P_CHOICE, sym, NULL);
303 prop = sym_get_choice_prop(sym);
304 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
305 ;
306 *ep = expr_alloc_one(E_CHOICE, NULL);
307 (*ep)->right.sym = menu->sym;
308 }
309 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
310 for (last_menu = menu->list; ; last_menu = last_menu->next) {
311 last_menu->parent = parent;
312 if (!last_menu->next)
313 break;
314 }
315 last_menu->next = menu->next;
316 menu->next = menu->list;
317 menu->list = NULL;
318 }
319 }
320
321 if (sym && !(sym->flags & SYMBOL_WARNED)) {
322 if (sym->type == S_UNKNOWN)
323 menu_warn(parent, "config symbol defined "
324 "without type\n");
325
326 if (sym_is_choice(sym) && !parent->prompt)
327 menu_warn(parent, "choice must have a prompt\n");
328
329 /* Check properties connected to this symbol */
330 sym_check_prop(sym);
331 sym->flags |= SYMBOL_WARNED;
332 }
333
334 if (sym && !sym_is_optional(sym) && parent->prompt) {
335 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
336 expr_alloc_and(parent->prompt->visible.expr,
337 expr_alloc_symbol(&symbol_mod)));
338 }
339 }
340
341 bool menu_is_visible(struct menu *menu)
342 {
343 struct menu *child;
344 struct symbol *sym;
345 tristate visible;
346
347 if (!menu->prompt)
348 return false;
349 sym = menu->sym;
350 if (sym) {
351 sym_calc_value(sym);
352 visible = menu->prompt->visible.tri;
353 } else
354 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
355
356 if (visible != no)
357 return true;
358 if (!sym || sym_get_tristate_value(menu->sym) == no)
359 return false;
360
361 for (child = menu->list; child; child = child->next)
362 if (menu_is_visible(child))
363 return true;
364 return false;
365 }
366
367 const char *menu_get_prompt(struct menu *menu)
368 {
369 if (menu->prompt)
370 return _(menu->prompt->text);
371 else if (menu->sym)
372 return _(menu->sym->name);
373 return NULL;
374 }
375
376 struct menu *menu_get_root_menu(struct menu *menu)
377 {
378 return &rootmenu;
379 }
380
381 struct menu *menu_get_parent_menu(struct menu *menu)
382 {
383 enum prop_type type;
384
385 for (; menu != &rootmenu; menu = menu->parent) {
386 type = menu->prompt ? menu->prompt->type : 0;
387 if (type == P_MENU)
388 break;
389 }
390 return menu;
391 }
392
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