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);
328 * Use the choice itself as the parent dependency of
329 * the contained items. This turns the mode of the
330 * choice into an upper bound on the visibility of the
331 * choice value symbols.
333 parentdep = expr_alloc_symbol(sym);
334 } else if (parent->prompt)
335 parentdep = parent->prompt->visible.expr;
337 parentdep = parent->dep;
339 /* For each child menu node... */
340 for (menu = parent->list; menu; menu = menu->next) {
342 * Propagate parent dependencies to the child menu
343 * node, also rewriting and simplifying expressions
345 basedep = rewrite_m(menu->dep);
346 basedep = expr_transform(basedep);
347 basedep = expr_alloc_and(expr_copy(parentdep), basedep);
348 basedep = expr_eliminate_dups(basedep);
353 * Note: For symbols, all prompts are included
354 * too in the symbol's own property list
356 prop = menu->sym->prop;
359 * For non-symbol menu nodes, we just need to
364 /* For each property... */
365 for (; prop; prop = prop->next) {
366 if (prop->menu != menu)
370 * 1. The property lacks dependencies
371 * and so isn't location-specific,
374 * 2. The property belongs to a symbol
375 * defined in multiple locations and
376 * is from some other location. It
377 * will be handled there in that
385 * Propagate parent dependencies to the
386 * property's condition, rewriting and
387 * simplifying expressions at the same time
389 dep = rewrite_m(prop->visible.expr);
390 dep = expr_transform(dep);
391 dep = expr_alloc_and(expr_copy(basedep), dep);
392 dep = expr_eliminate_dups(dep);
393 if (menu->sym && menu->sym->type != S_TRISTATE)
394 dep = expr_trans_bool(dep);
395 prop->visible.expr = dep;
398 * Handle selects and implies, which modify the
399 * dependencies of the selected/implied symbol
401 if (prop->type == P_SELECT) {
402 struct symbol *es = prop_get_symbol(prop);
403 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
404 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
405 } else if (prop->type == P_IMPLY) {
406 struct symbol *es = prop_get_symbol(prop);
407 es->implied.expr = expr_alloc_or(es->implied.expr,
408 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
413 if (sym && sym_is_choice(sym))
414 expr_free(parentdep);
417 * Recursively process children in the same fashion before
420 for (menu = parent->list; menu; menu = menu->next)
424 * Automatic submenu creation. If sym is a symbol and A, B, C,
425 * ... are consecutive items (symbols, menus, ifs, etc.) that
426 * all depend on sym, then the following menu structure is
435 * This also works recursively, giving the following structure
436 * if A is a symbol and B depends on A:
445 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
446 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
447 basedep = expr_eliminate_dups(expr_transform(basedep));
449 /* Examine consecutive elements after sym */
451 for (menu = parent->next; menu; menu = menu->next) {
452 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
453 if (!expr_contains_symbol(dep, sym))
454 /* No dependency, quit */
456 if (expr_depends_symbol(dep, sym))
457 /* Absolute dependency, put in submenu */
461 * Also consider it a dependency on sym if our
462 * dependencies contain sym and are a "superset" of
463 * sym's dependencies, e.g. '(sym || Q) && R' when sym
466 * Note that 'R' might be from an enclosing menu or if,
467 * making this a more common case than it might seem.
469 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
470 dep = expr_eliminate_dups(expr_transform(dep));
471 dep2 = expr_copy(basedep);
472 expr_eliminate_eq(&dep, &dep2);
474 if (!expr_is_yes(dep2)) {
475 /* Not superset, quit */
479 /* Superset, put in submenu */
483 menu->parent = parent;
488 parent->list = parent->next;
489 parent->next = last_menu->next;
490 last_menu->next = NULL;
493 sym->dir_dep.expr = expr_alloc_or(sym->dir_dep.expr, parent->dep);
495 for (menu = parent->list; menu; menu = menu->next) {
496 if (sym && sym_is_choice(sym) &&
497 menu->sym && !sym_is_choice_value(menu->sym)) {
498 current_entry = menu;
499 menu->sym->flags |= SYMBOL_CHOICEVAL;
501 menu_warn(menu, "choice value must have a prompt");
502 for (prop = menu->sym->prop; prop; prop = prop->next) {
503 if (prop->type == P_DEFAULT)
504 prop_warn(prop, "defaults for choice "
505 "values not supported");
506 if (prop->menu == menu)
508 if (prop->type == P_PROMPT &&
509 prop->menu->parent->sym != sym)
510 prop_warn(prop, "choice value used outside its choice group");
512 /* Non-tristate choice values of tristate choices must
513 * depend on the choice being set to Y. The choice
514 * values' dependencies were propagated to their
515 * properties above, so the change here must be re-
518 if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
519 basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
520 menu->dep = expr_alloc_and(basedep, menu->dep);
521 for (prop = menu->sym->prop; prop; prop = prop->next) {
522 if (prop->menu != menu)
524 prop->visible.expr = expr_alloc_and(expr_copy(basedep),
528 menu_add_symbol(P_CHOICE, sym, NULL);
529 prop = sym_get_choice_prop(sym);
530 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
532 *ep = expr_alloc_one(E_LIST, NULL);
533 (*ep)->right.sym = menu->sym;
535 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
536 for (last_menu = menu->list; ; last_menu = last_menu->next) {
537 last_menu->parent = parent;
538 if (!last_menu->next)
541 last_menu->next = menu->next;
542 menu->next = menu->list;
547 if (sym && !(sym->flags & SYMBOL_WARNED)) {
548 if (sym->type == S_UNKNOWN)
549 menu_warn(parent, "config symbol defined without type");
551 if (sym_is_choice(sym) && !parent->prompt)
552 menu_warn(parent, "choice must have a prompt");
554 /* Check properties connected to this symbol */
556 sym->flags |= SYMBOL_WARNED;
560 * For non-optional choices, add a reverse dependency (corresponding to
561 * a select) of '<visibility> && m'. This prevents the user from
562 * setting the choice mode to 'n' when the choice is visible.
564 * This would also work for non-choice symbols, but only non-optional
565 * choices clear SYMBOL_OPTIONAL as of writing. Choices are implemented
566 * as a type of symbol.
568 if (sym && !sym_is_optional(sym) && parent->prompt) {
569 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
570 expr_alloc_and(parent->prompt->visible.expr,
571 expr_alloc_symbol(&symbol_mod)));
575 bool menu_has_prompt(struct menu *menu)
583 * Determine if a menu is empty.
584 * A menu is considered empty if it contains no or only
587 bool menu_is_empty(struct menu *menu)
591 for (child = menu->list; child; child = child->next) {
592 if (menu_is_visible(child))
598 bool menu_is_visible(struct menu *menu)
607 if (menu->visibility) {
608 if (expr_calc_value(menu->visibility) == no)
615 visible = menu->prompt->visible.tri;
617 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
622 if (!sym || sym_get_tristate_value(menu->sym) == no)
625 for (child = menu->list; child; child = child->next) {
626 if (menu_is_visible(child)) {
628 sym->flags |= SYMBOL_DEF_USER;
636 const char *menu_get_prompt(struct menu *menu)
639 return menu->prompt->text;
641 return menu->sym->name;
645 struct menu *menu_get_root_menu(struct menu *menu)
650 struct menu *menu_get_parent_menu(struct menu *menu)
654 for (; menu != &rootmenu; menu = menu->parent) {
655 type = menu->prompt ? menu->prompt->type : 0;
662 bool menu_has_help(struct menu *menu)
664 return menu->help != NULL;
667 const char *menu_get_help(struct menu *menu)
675 static void get_prompt_str(struct gstr *r, struct property *prop,
676 struct list_head *head)
679 struct menu *submenu[8], *menu, *location = NULL;
680 struct jump_key *jump = NULL;
682 str_printf(r, _("Prompt: %s\n"), _(prop->text));
683 menu = prop->menu->parent;
684 for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
685 bool accessible = menu_is_visible(menu);
688 if (location == NULL && accessible)
691 if (head && location) {
692 jump = xmalloc(sizeof(struct jump_key));
694 if (menu_is_visible(prop->menu)) {
696 * There is not enough room to put the hint at the
697 * beginning of the "Prompt" line. Put the hint on the
698 * last "Location" line even when it would belong on
701 jump->target = prop->menu;
703 jump->target = location;
705 if (list_empty(head))
708 jump->index = list_entry(head->prev, struct jump_key,
711 list_add_tail(&jump->entries, head);
715 str_printf(r, _(" Location:\n"));
716 for (j = 4; --i >= 0; j += 2) {
718 if (jump && menu == location)
719 jump->offset = strlen(r->s);
720 str_printf(r, "%*c-> %s", j, ' ',
721 _(menu_get_prompt(menu)));
723 str_printf(r, " (%s [=%s])", menu->sym->name ?
724 menu->sym->name : _("<choice>"),
725 sym_get_string_value(menu->sym));
733 * get property of type P_SYMBOL
735 static struct property *get_symbol_prop(struct symbol *sym)
737 struct property *prop = NULL;
739 for_all_properties(sym, prop, P_SYMBOL)
744 static void get_symbol_props_str(struct gstr *r, struct symbol *sym,
745 enum prop_type tok, const char *prefix)
748 struct property *prop;
750 for_all_properties(sym, prop, tok) {
752 str_append(r, prefix);
755 str_printf(r, " && ");
756 expr_gstr_print(prop->expr, r);
763 * head is optional and may be NULL
765 static void get_symbol_str(struct gstr *r, struct symbol *sym,
766 struct list_head *head)
768 struct property *prop;
770 if (sym && sym->name) {
771 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
772 sym_get_string_value(sym));
773 str_printf(r, "Type : %s\n", sym_type_name(sym->type));
774 if (sym->type == S_INT || sym->type == S_HEX) {
775 prop = sym_get_range_prop(sym);
777 str_printf(r, "Range : ");
778 expr_gstr_print(prop->expr, r);
783 for_all_prompts(sym, prop)
784 get_prompt_str(r, prop, head);
786 prop = get_symbol_prop(sym);
788 str_printf(r, _(" Defined at %s:%d\n"), prop->menu->file->name,
790 if (!expr_is_yes(prop->visible.expr)) {
791 str_append(r, _(" Depends on: "));
792 expr_gstr_print(prop->visible.expr, r);
797 get_symbol_props_str(r, sym, P_SELECT, _(" Selects: "));
798 if (sym->rev_dep.expr) {
799 str_append(r, _(" Selected by: "));
800 expr_gstr_print(sym->rev_dep.expr, r);
804 get_symbol_props_str(r, sym, P_IMPLY, _(" Implies: "));
805 if (sym->implied.expr) {
806 str_append(r, _(" Implied by: "));
807 expr_gstr_print(sym->implied.expr, r);
811 str_append(r, "\n\n");
814 struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head)
817 struct gstr res = str_new();
820 for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
821 get_symbol_str(&res, sym, head);
823 str_append(&res, _("No matches found.\n"));
828 void menu_get_ext_help(struct menu *menu, struct gstr *help)
830 struct symbol *sym = menu->sym;
831 const char *help_text = nohelp_text;
833 if (menu_has_help(menu)) {
835 str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
836 help_text = menu_get_help(menu);
838 str_printf(help, "%s\n", _(help_text));
840 get_symbol_str(help, sym, NULL);