2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
13 static const char nohelp_text[] = "There is no help available for this option.";
16 static struct menu **last_entry_ptr;
18 struct file *file_list;
19 struct file *current_file;
21 void menu_warn(struct menu *menu, const char *fmt, ...)
25 fprintf(stderr, "%s:%d:warning: ", menu->file->name, menu->lineno);
26 vfprintf(stderr, fmt, ap);
27 fprintf(stderr, "\n");
31 static void prop_warn(struct property *prop, const char *fmt, ...)
35 fprintf(stderr, "%s:%d:warning: ", prop->file->name, prop->lineno);
36 vfprintf(stderr, fmt, ap);
37 fprintf(stderr, "\n");
43 current_entry = current_menu = &rootmenu;
44 last_entry_ptr = &rootmenu.list;
47 void menu_add_entry(struct symbol *sym)
51 menu = xmalloc(sizeof(*menu));
52 memset(menu, 0, sizeof(*menu));
54 menu->parent = current_menu;
55 menu->file = current_file;
56 menu->lineno = zconf_lineno();
58 *last_entry_ptr = menu;
59 last_entry_ptr = &menu->next;
62 menu_add_symbol(P_SYMBOL, sym, NULL);
65 struct menu *menu_add_menu(void)
67 last_entry_ptr = ¤t_entry->list;
68 return current_menu = current_entry;
71 void menu_end_menu(void)
73 last_entry_ptr = ¤t_menu->next;
74 current_menu = current_menu->parent;
78 * Rewrites 'm' to 'm' && MODULES, so that it evaluates to 'n' when running
81 static struct expr *rewrite_m(struct expr *e)
88 e->left.expr = rewrite_m(e->left.expr);
92 e->left.expr = rewrite_m(e->left.expr);
93 e->right.expr = rewrite_m(e->right.expr);
96 /* change 'm' into 'm' && MODULES */
97 if (e->left.sym == &symbol_mod)
98 return expr_alloc_and(e, expr_alloc_symbol(modules_sym));
106 void menu_add_dep(struct expr *dep)
108 current_entry->dep = expr_alloc_and(current_entry->dep, dep);
111 void menu_set_type(int type)
113 struct symbol *sym = current_entry->sym;
115 if (sym->type == type)
117 if (sym->type == S_UNKNOWN) {
121 menu_warn(current_entry,
122 "ignoring type redefinition of '%s' from '%s' to '%s'",
123 sym->name ? sym->name : "<choice>",
124 sym_type_name(sym->type), sym_type_name(type));
127 static struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep)
129 struct property *prop = prop_alloc(type, current_entry->sym);
131 prop->menu = current_entry;
133 prop->visible.expr = dep;
136 if (isspace(*prompt)) {
137 prop_warn(prop, "leading whitespace ignored");
138 while (isspace(*prompt))
141 if (current_entry->prompt && current_entry != &rootmenu)
142 prop_warn(prop, "prompt redefined");
144 /* Apply all upper menus' visibilities to actual prompts. */
145 if(type == P_PROMPT) {
146 struct menu *menu = current_entry;
148 while ((menu = menu->parent) != NULL) {
149 struct expr *dup_expr;
151 if (!menu->visibility)
154 * Do not add a reference to the
155 * menu's visibility expression but
156 * use a copy of it. Otherwise the
157 * expression reduction functions
158 * will modify expressions that have
159 * multiple references which can
160 * cause unwanted side effects.
162 dup_expr = expr_copy(menu->visibility);
165 = expr_alloc_and(prop->visible.expr,
170 current_entry->prompt = prop;
177 struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
179 return menu_add_prop(type, prompt, NULL, dep);
182 void menu_add_visibility(struct expr *expr)
184 current_entry->visibility = expr_alloc_and(current_entry->visibility,
188 void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
190 menu_add_prop(type, NULL, expr, dep);
193 void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
195 menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
198 void menu_add_option(int token, char *arg)
203 zconf_error("symbol '%s' redefines option 'modules'"
204 " already defined by symbol '%s'",
205 current_entry->sym->name,
208 modules_sym = current_entry->sym;
210 case T_OPT_DEFCONFIG_LIST:
211 if (!sym_defconfig_list)
212 sym_defconfig_list = current_entry->sym;
213 else if (sym_defconfig_list != current_entry->sym)
214 zconf_error("trying to redefine defconfig symbol");
219 case T_OPT_ALLNOCONFIG_Y:
220 current_entry->sym->flags |= SYMBOL_ALLNOCONFIG_Y;
225 static int menu_validate_number(struct symbol *sym, struct symbol *sym2)
227 return sym2->type == S_INT || sym2->type == S_HEX ||
228 (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
231 static void sym_check_prop(struct symbol *sym)
233 struct property *prop;
237 for (prop = sym->prop; prop; prop = prop->next) {
238 switch (prop->type) {
240 if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
241 prop->expr->type != E_SYMBOL)
243 "default for config symbol '%s'"
244 " must be a single symbol", sym->name);
245 if (prop->expr->type != E_SYMBOL)
247 sym2 = prop_get_symbol(prop);
248 if (sym->type == S_HEX || sym->type == S_INT) {
249 if (!menu_validate_number(sym, sym2))
251 "'%s': number is invalid",
254 if (sym_is_choice(sym)) {
255 struct property *choice_prop =
256 sym_get_choice_prop(sym2);
259 prop_get_symbol(choice_prop) != sym)
261 "choice default symbol '%s' is not contained in the choice",
267 use = prop->type == P_SELECT ? "select" : "imply";
268 sym2 = prop_get_symbol(prop);
269 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
271 "config symbol '%s' uses %s, but is "
272 "not bool or tristate", sym->name, use);
273 else if (sym2->type != S_UNKNOWN &&
274 sym2->type != S_BOOLEAN &&
275 sym2->type != S_TRISTATE)
277 "'%s' has wrong type. '%s' only "
278 "accept arguments of bool and "
279 "tristate type", sym2->name, use);
282 if (sym->type != S_INT && sym->type != S_HEX)
283 prop_warn(prop, "range is only allowed "
284 "for int or hex symbols");
285 if (!menu_validate_number(sym, prop->expr->left.sym) ||
286 !menu_validate_number(sym, prop->expr->right.sym))
287 prop_warn(prop, "range is invalid");
295 void menu_finalize(struct menu *parent)
297 struct menu *menu, *last_menu;
299 struct property *prop;
300 struct expr *parentdep, *basedep, *dep, *dep2, **ep;
305 * This menu node has children. We (recursively) process them
306 * and propagate parent dependencies before moving on.
309 if (sym && sym_is_choice(sym)) {
310 if (sym->type == S_UNKNOWN) {
311 /* find the first choice value to find out choice type */
312 current_entry = parent;
313 for (menu = parent->list; menu; menu = menu->next) {
314 if (menu->sym && menu->sym->type != S_UNKNOWN) {
315 menu_set_type(menu->sym->type);
320 /* set the type of the remaining choice values */
321 for (menu = parent->list; menu; menu = menu->next) {
322 current_entry = menu;
323 if (menu->sym && menu->sym->type == S_UNKNOWN)
324 menu_set_type(sym->type);
326 parentdep = expr_alloc_symbol(sym);
327 } else if (parent->prompt)
328 parentdep = parent->prompt->visible.expr;
330 parentdep = parent->dep;
332 /* For each child menu node... */
333 for (menu = parent->list; menu; menu = menu->next) {
335 * Propagate parent dependencies to the child menu
336 * node, also rewriting and simplifying expressions
338 basedep = rewrite_m(menu->dep);
339 basedep = expr_transform(basedep);
340 basedep = expr_alloc_and(expr_copy(parentdep), basedep);
341 basedep = expr_eliminate_dups(basedep);
346 * Note: For symbols, all prompts are included
347 * too in the symbol's own property list
349 prop = menu->sym->prop;
352 * For non-symbol menu nodes, we just need to
357 /* For each property... */
358 for (; prop; prop = prop->next) {
359 if (prop->menu != menu)
363 * 1. The property lacks dependencies
364 * and so isn't location-specific,
367 * 2. The property belongs to a symbol
368 * defined in multiple locations and
369 * is from some other location. It
370 * will be handled there in that
378 * Propagate parent dependencies to the
379 * property's condition, rewriting and
380 * simplifying expressions at the same time
382 dep = rewrite_m(prop->visible.expr);
383 dep = expr_transform(dep);
384 dep = expr_alloc_and(expr_copy(basedep), dep);
385 dep = expr_eliminate_dups(dep);
386 if (menu->sym && menu->sym->type != S_TRISTATE)
387 dep = expr_trans_bool(dep);
388 prop->visible.expr = dep;
391 * Handle selects and implies, which modify the
392 * dependencies of the selected/implied symbol
394 if (prop->type == P_SELECT) {
395 struct symbol *es = prop_get_symbol(prop);
396 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
397 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
398 } else if (prop->type == P_IMPLY) {
399 struct symbol *es = prop_get_symbol(prop);
400 es->implied.expr = expr_alloc_or(es->implied.expr,
401 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
406 if (sym && sym_is_choice(sym))
407 expr_free(parentdep);
410 * Recursively process children in the same fashion before
413 for (menu = parent->list; menu; menu = menu->next)
417 * Automatic submenu creation. If sym is a symbol and A, B, C,
418 * ... are consecutive items (symbols, menus, ifs, etc.) that
419 * all depend on sym, then the following menu structure is
428 * This also works recursively, giving the following structure
429 * if A is a symbol and B depends on A:
438 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
439 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
440 basedep = expr_eliminate_dups(expr_transform(basedep));
442 /* Examine consecutive elements after sym */
444 for (menu = parent->next; menu; menu = menu->next) {
445 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
446 if (!expr_contains_symbol(dep, sym))
447 /* No dependency, quit */
449 if (expr_depends_symbol(dep, sym))
450 /* Absolute dependency, put in submenu */
454 * Also consider it a dependency on sym if our
455 * dependencies contain sym and are a "superset" of
456 * sym's dependencies, e.g. '(sym || Q) && R' when sym
459 * Note that 'R' might be from an enclosing menu or if,
460 * making this a more common case than it might seem.
462 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
463 dep = expr_eliminate_dups(expr_transform(dep));
464 dep2 = expr_copy(basedep);
465 expr_eliminate_eq(&dep, &dep2);
467 if (!expr_is_yes(dep2)) {
468 /* Not superset, quit */
472 /* Superset, put in submenu */
476 menu->parent = parent;
481 parent->list = parent->next;
482 parent->next = last_menu->next;
483 last_menu->next = NULL;
486 sym->dir_dep.expr = expr_alloc_or(sym->dir_dep.expr, parent->dep);
488 for (menu = parent->list; menu; menu = menu->next) {
489 if (sym && sym_is_choice(sym) &&
490 menu->sym && !sym_is_choice_value(menu->sym)) {
491 current_entry = menu;
492 menu->sym->flags |= SYMBOL_CHOICEVAL;
494 menu_warn(menu, "choice value must have a prompt");
495 for (prop = menu->sym->prop; prop; prop = prop->next) {
496 if (prop->type == P_DEFAULT)
497 prop_warn(prop, "defaults for choice "
498 "values not supported");
499 if (prop->menu == menu)
501 if (prop->type == P_PROMPT &&
502 prop->menu->parent->sym != sym)
503 prop_warn(prop, "choice value used outside its choice group");
505 /* Non-tristate choice values of tristate choices must
506 * depend on the choice being set to Y. The choice
507 * values' dependencies were propagated to their
508 * properties above, so the change here must be re-
511 if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
512 basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
513 menu->dep = expr_alloc_and(basedep, menu->dep);
514 for (prop = menu->sym->prop; prop; prop = prop->next) {
515 if (prop->menu != menu)
517 prop->visible.expr = expr_alloc_and(expr_copy(basedep),
521 menu_add_symbol(P_CHOICE, sym, NULL);
522 prop = sym_get_choice_prop(sym);
523 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
525 *ep = expr_alloc_one(E_LIST, NULL);
526 (*ep)->right.sym = menu->sym;
528 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
529 for (last_menu = menu->list; ; last_menu = last_menu->next) {
530 last_menu->parent = parent;
531 if (!last_menu->next)
534 last_menu->next = menu->next;
535 menu->next = menu->list;
540 if (sym && !(sym->flags & SYMBOL_WARNED)) {
541 if (sym->type == S_UNKNOWN)
542 menu_warn(parent, "config symbol defined without type");
544 if (sym_is_choice(sym) && !parent->prompt)
545 menu_warn(parent, "choice must have a prompt");
547 /* Check properties connected to this symbol */
549 sym->flags |= SYMBOL_WARNED;
552 if (sym && !sym_is_optional(sym) && parent->prompt) {
553 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
554 expr_alloc_and(parent->prompt->visible.expr,
555 expr_alloc_symbol(&symbol_mod)));
559 bool menu_has_prompt(struct menu *menu)
567 * Determine if a menu is empty.
568 * A menu is considered empty if it contains no or only
571 bool menu_is_empty(struct menu *menu)
575 for (child = menu->list; child; child = child->next) {
576 if (menu_is_visible(child))
582 bool menu_is_visible(struct menu *menu)
591 if (menu->visibility) {
592 if (expr_calc_value(menu->visibility) == no)
599 visible = menu->prompt->visible.tri;
601 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
606 if (!sym || sym_get_tristate_value(menu->sym) == no)
609 for (child = menu->list; child; child = child->next) {
610 if (menu_is_visible(child)) {
612 sym->flags |= SYMBOL_DEF_USER;
620 const char *menu_get_prompt(struct menu *menu)
623 return menu->prompt->text;
625 return menu->sym->name;
629 struct menu *menu_get_root_menu(struct menu *menu)
634 struct menu *menu_get_parent_menu(struct menu *menu)
638 for (; menu != &rootmenu; menu = menu->parent) {
639 type = menu->prompt ? menu->prompt->type : 0;
646 bool menu_has_help(struct menu *menu)
648 return menu->help != NULL;
651 const char *menu_get_help(struct menu *menu)
659 static void get_prompt_str(struct gstr *r, struct property *prop,
660 struct list_head *head)
663 struct menu *submenu[8], *menu, *location = NULL;
664 struct jump_key *jump = NULL;
666 str_printf(r, _("Prompt: %s\n"), _(prop->text));
667 menu = prop->menu->parent;
668 for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
669 bool accessible = menu_is_visible(menu);
672 if (location == NULL && accessible)
675 if (head && location) {
676 jump = xmalloc(sizeof(struct jump_key));
678 if (menu_is_visible(prop->menu)) {
680 * There is not enough room to put the hint at the
681 * beginning of the "Prompt" line. Put the hint on the
682 * last "Location" line even when it would belong on
685 jump->target = prop->menu;
687 jump->target = location;
689 if (list_empty(head))
692 jump->index = list_entry(head->prev, struct jump_key,
695 list_add_tail(&jump->entries, head);
699 str_printf(r, _(" Location:\n"));
700 for (j = 4; --i >= 0; j += 2) {
702 if (jump && menu == location)
703 jump->offset = strlen(r->s);
704 str_printf(r, "%*c-> %s", j, ' ',
705 _(menu_get_prompt(menu)));
707 str_printf(r, " (%s [=%s])", menu->sym->name ?
708 menu->sym->name : _("<choice>"),
709 sym_get_string_value(menu->sym));
717 * get property of type P_SYMBOL
719 static struct property *get_symbol_prop(struct symbol *sym)
721 struct property *prop = NULL;
723 for_all_properties(sym, prop, P_SYMBOL)
728 static void get_symbol_props_str(struct gstr *r, struct symbol *sym,
729 enum prop_type tok, const char *prefix)
732 struct property *prop;
734 for_all_properties(sym, prop, tok) {
736 str_append(r, prefix);
739 str_printf(r, " && ");
740 expr_gstr_print(prop->expr, r);
747 * head is optional and may be NULL
749 static void get_symbol_str(struct gstr *r, struct symbol *sym,
750 struct list_head *head)
752 struct property *prop;
754 if (sym && sym->name) {
755 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
756 sym_get_string_value(sym));
757 str_printf(r, "Type : %s\n", sym_type_name(sym->type));
758 if (sym->type == S_INT || sym->type == S_HEX) {
759 prop = sym_get_range_prop(sym);
761 str_printf(r, "Range : ");
762 expr_gstr_print(prop->expr, r);
767 for_all_prompts(sym, prop)
768 get_prompt_str(r, prop, head);
770 prop = get_symbol_prop(sym);
772 str_printf(r, _(" Defined at %s:%d\n"), prop->menu->file->name,
774 if (!expr_is_yes(prop->visible.expr)) {
775 str_append(r, _(" Depends on: "));
776 expr_gstr_print(prop->visible.expr, r);
781 get_symbol_props_str(r, sym, P_SELECT, _(" Selects: "));
782 if (sym->rev_dep.expr) {
783 str_append(r, _(" Selected by: "));
784 expr_gstr_print(sym->rev_dep.expr, r);
788 get_symbol_props_str(r, sym, P_IMPLY, _(" Implies: "));
789 if (sym->implied.expr) {
790 str_append(r, _(" Implied by: "));
791 expr_gstr_print(sym->implied.expr, r);
795 str_append(r, "\n\n");
798 struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head)
801 struct gstr res = str_new();
804 for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
805 get_symbol_str(&res, sym, head);
807 str_append(&res, _("No matches found.\n"));
812 void menu_get_ext_help(struct menu *menu, struct gstr *help)
814 struct symbol *sym = menu->sym;
815 const char *help_text = nohelp_text;
817 if (menu_has_help(menu)) {
819 str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
820 help_text = menu_get_help(menu);
822 str_printf(help, "%s\n", _(help_text));
824 get_symbol_str(help, sym, NULL);