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 void menu_end_entry(void)
69 struct menu *menu_add_menu(void)
72 last_entry_ptr = ¤t_entry->list;
73 return current_menu = current_entry;
76 void menu_end_menu(void)
78 last_entry_ptr = ¤t_menu->next;
79 current_menu = current_menu->parent;
83 * Rewrites 'm' to 'm' && MODULES, so that it evaluates to 'n' when running
86 static struct expr *rewrite_m(struct expr *e)
93 e->left.expr = rewrite_m(e->left.expr);
97 e->left.expr = rewrite_m(e->left.expr);
98 e->right.expr = rewrite_m(e->right.expr);
101 /* change 'm' into 'm' && MODULES */
102 if (e->left.sym == &symbol_mod)
103 return expr_alloc_and(e, expr_alloc_symbol(modules_sym));
111 void menu_add_dep(struct expr *dep)
113 current_entry->dep = expr_alloc_and(current_entry->dep, dep);
116 void menu_set_type(int type)
118 struct symbol *sym = current_entry->sym;
120 if (sym->type == type)
122 if (sym->type == S_UNKNOWN) {
126 menu_warn(current_entry,
127 "ignoring type redefinition of '%s' from '%s' to '%s'",
128 sym->name ? sym->name : "<choice>",
129 sym_type_name(sym->type), sym_type_name(type));
132 static struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep)
134 struct property *prop = prop_alloc(type, current_entry->sym);
136 prop->menu = current_entry;
138 prop->visible.expr = dep;
141 if (isspace(*prompt)) {
142 prop_warn(prop, "leading whitespace ignored");
143 while (isspace(*prompt))
146 if (current_entry->prompt && current_entry != &rootmenu)
147 prop_warn(prop, "prompt redefined");
149 /* Apply all upper menus' visibilities to actual prompts. */
150 if(type == P_PROMPT) {
151 struct menu *menu = current_entry;
153 while ((menu = menu->parent) != NULL) {
154 struct expr *dup_expr;
156 if (!menu->visibility)
159 * Do not add a reference to the
160 * menu's visibility expression but
161 * use a copy of it. Otherwise the
162 * expression reduction functions
163 * will modify expressions that have
164 * multiple references which can
165 * cause unwanted side effects.
167 dup_expr = expr_copy(menu->visibility);
170 = expr_alloc_and(prop->visible.expr,
175 current_entry->prompt = prop;
182 struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
184 return menu_add_prop(type, prompt, NULL, dep);
187 void menu_add_visibility(struct expr *expr)
189 current_entry->visibility = expr_alloc_and(current_entry->visibility,
193 void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
195 menu_add_prop(type, NULL, expr, dep);
198 void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
200 menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
203 void menu_add_option(int token, char *arg)
208 zconf_error("symbol '%s' redefines option 'modules'"
209 " already defined by symbol '%s'",
210 current_entry->sym->name,
213 modules_sym = current_entry->sym;
215 case T_OPT_DEFCONFIG_LIST:
216 if (!sym_defconfig_list)
217 sym_defconfig_list = current_entry->sym;
218 else if (sym_defconfig_list != current_entry->sym)
219 zconf_error("trying to redefine defconfig symbol");
224 case T_OPT_ALLNOCONFIG_Y:
225 current_entry->sym->flags |= SYMBOL_ALLNOCONFIG_Y;
230 static int menu_validate_number(struct symbol *sym, struct symbol *sym2)
232 return sym2->type == S_INT || sym2->type == S_HEX ||
233 (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
236 static void sym_check_prop(struct symbol *sym)
238 struct property *prop;
242 for (prop = sym->prop; prop; prop = prop->next) {
243 switch (prop->type) {
245 if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
246 prop->expr->type != E_SYMBOL)
248 "default for config symbol '%s'"
249 " must be a single symbol", sym->name);
250 if (prop->expr->type != E_SYMBOL)
252 sym2 = prop_get_symbol(prop);
253 if (sym->type == S_HEX || sym->type == S_INT) {
254 if (!menu_validate_number(sym, sym2))
256 "'%s': number is invalid",
259 if (sym_is_choice(sym)) {
260 struct property *choice_prop =
261 sym_get_choice_prop(sym2);
264 prop_get_symbol(choice_prop) != sym)
266 "choice default symbol '%s' is not contained in the choice",
272 use = prop->type == P_SELECT ? "select" : "imply";
273 sym2 = prop_get_symbol(prop);
274 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
276 "config symbol '%s' uses %s, but is "
277 "not boolean or tristate", sym->name, use);
278 else if (sym2->type != S_UNKNOWN &&
279 sym2->type != S_BOOLEAN &&
280 sym2->type != S_TRISTATE)
282 "'%s' has wrong type. '%s' only "
283 "accept arguments of boolean and "
284 "tristate type", sym2->name, use);
287 if (sym->type != S_INT && sym->type != S_HEX)
288 prop_warn(prop, "range is only allowed "
289 "for int or hex symbols");
290 if (!menu_validate_number(sym, prop->expr->left.sym) ||
291 !menu_validate_number(sym, prop->expr->right.sym))
292 prop_warn(prop, "range is invalid");
300 void menu_finalize(struct menu *parent)
302 struct menu *menu, *last_menu;
304 struct property *prop;
305 struct expr *parentdep, *basedep, *dep, *dep2, **ep;
310 * This menu node has children. We (recursively) process them
311 * and propagate parent dependencies before moving on.
314 if (sym && sym_is_choice(sym)) {
315 if (sym->type == S_UNKNOWN) {
316 /* find the first choice value to find out choice type */
317 current_entry = parent;
318 for (menu = parent->list; menu; menu = menu->next) {
319 if (menu->sym && menu->sym->type != S_UNKNOWN) {
320 menu_set_type(menu->sym->type);
325 /* set the type of the remaining choice values */
326 for (menu = parent->list; menu; menu = menu->next) {
327 current_entry = menu;
328 if (menu->sym && menu->sym->type == S_UNKNOWN)
329 menu_set_type(sym->type);
331 parentdep = expr_alloc_symbol(sym);
332 } else if (parent->prompt)
333 parentdep = parent->prompt->visible.expr;
335 parentdep = parent->dep;
337 /* For each child menu node... */
338 for (menu = parent->list; menu; menu = menu->next) {
340 * Propagate parent dependencies to the child menu
341 * node, also rewriting and simplifying expressions
343 basedep = rewrite_m(menu->dep);
344 basedep = expr_transform(basedep);
345 basedep = expr_alloc_and(expr_copy(parentdep), basedep);
346 basedep = expr_eliminate_dups(basedep);
351 * Note: For symbols, all prompts are included
352 * too in the symbol's own property list
354 prop = menu->sym->prop;
357 * For non-symbol menu nodes, we just need to
362 /* For each property... */
363 for (; prop; prop = prop->next) {
364 if (prop->menu != menu)
368 * 1. The property lacks dependencies
369 * and so isn't location-specific,
372 * 2. The property belongs to a symbol
373 * defined in multiple locations and
374 * is from some other location. It
375 * will be handled there in that
383 * Propagate parent dependencies to the
384 * property's condition, rewriting and
385 * simplifying expressions at the same time
387 dep = rewrite_m(prop->visible.expr);
388 dep = expr_transform(dep);
389 dep = expr_alloc_and(expr_copy(basedep), dep);
390 dep = expr_eliminate_dups(dep);
391 if (menu->sym && menu->sym->type != S_TRISTATE)
392 dep = expr_trans_bool(dep);
393 prop->visible.expr = dep;
396 * Handle selects and implies, which modify the
397 * dependencies of the selected/implied symbol
399 if (prop->type == P_SELECT) {
400 struct symbol *es = prop_get_symbol(prop);
401 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
402 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
403 } else if (prop->type == P_IMPLY) {
404 struct symbol *es = prop_get_symbol(prop);
405 es->implied.expr = expr_alloc_or(es->implied.expr,
406 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
411 if (sym && sym_is_choice(sym))
412 expr_free(parentdep);
415 * Recursively process children in the same fashion before
418 for (menu = parent->list; menu; menu = menu->next)
421 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
422 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
423 basedep = expr_eliminate_dups(expr_transform(basedep));
425 for (menu = parent->next; menu; menu = menu->next) {
426 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
427 if (!expr_contains_symbol(dep, sym))
429 if (expr_depends_symbol(dep, sym))
431 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
432 dep = expr_eliminate_dups(expr_transform(dep));
433 dep2 = expr_copy(basedep);
434 expr_eliminate_eq(&dep, &dep2);
436 if (!expr_is_yes(dep2)) {
443 menu->parent = parent;
448 parent->list = parent->next;
449 parent->next = last_menu->next;
450 last_menu->next = NULL;
453 sym->dir_dep.expr = expr_alloc_or(sym->dir_dep.expr, parent->dep);
455 for (menu = parent->list; menu; menu = menu->next) {
456 if (sym && sym_is_choice(sym) &&
457 menu->sym && !sym_is_choice_value(menu->sym)) {
458 current_entry = menu;
459 menu->sym->flags |= SYMBOL_CHOICEVAL;
461 menu_warn(menu, "choice value must have a prompt");
462 for (prop = menu->sym->prop; prop; prop = prop->next) {
463 if (prop->type == P_DEFAULT)
464 prop_warn(prop, "defaults for choice "
465 "values not supported");
466 if (prop->menu == menu)
468 if (prop->type == P_PROMPT &&
469 prop->menu->parent->sym != sym)
470 prop_warn(prop, "choice value used outside its choice group");
472 /* Non-tristate choice values of tristate choices must
473 * depend on the choice being set to Y. The choice
474 * values' dependencies were propagated to their
475 * properties above, so the change here must be re-
478 if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
479 basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
480 menu->dep = expr_alloc_and(basedep, menu->dep);
481 for (prop = menu->sym->prop; prop; prop = prop->next) {
482 if (prop->menu != menu)
484 prop->visible.expr = expr_alloc_and(expr_copy(basedep),
488 menu_add_symbol(P_CHOICE, sym, NULL);
489 prop = sym_get_choice_prop(sym);
490 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
492 *ep = expr_alloc_one(E_LIST, NULL);
493 (*ep)->right.sym = menu->sym;
495 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
496 for (last_menu = menu->list; ; last_menu = last_menu->next) {
497 last_menu->parent = parent;
498 if (!last_menu->next)
501 last_menu->next = menu->next;
502 menu->next = menu->list;
507 if (sym && !(sym->flags & SYMBOL_WARNED)) {
508 if (sym->type == S_UNKNOWN)
509 menu_warn(parent, "config symbol defined without type");
511 if (sym_is_choice(sym) && !parent->prompt)
512 menu_warn(parent, "choice must have a prompt");
514 /* Check properties connected to this symbol */
516 sym->flags |= SYMBOL_WARNED;
519 if (sym && !sym_is_optional(sym) && parent->prompt) {
520 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
521 expr_alloc_and(parent->prompt->visible.expr,
522 expr_alloc_symbol(&symbol_mod)));
526 bool menu_has_prompt(struct menu *menu)
534 * Determine if a menu is empty.
535 * A menu is considered empty if it contains no or only
538 bool menu_is_empty(struct menu *menu)
542 for (child = menu->list; child; child = child->next) {
543 if (menu_is_visible(child))
549 bool menu_is_visible(struct menu *menu)
558 if (menu->visibility) {
559 if (expr_calc_value(menu->visibility) == no)
566 visible = menu->prompt->visible.tri;
568 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
573 if (!sym || sym_get_tristate_value(menu->sym) == no)
576 for (child = menu->list; child; child = child->next) {
577 if (menu_is_visible(child)) {
579 sym->flags |= SYMBOL_DEF_USER;
587 const char *menu_get_prompt(struct menu *menu)
590 return menu->prompt->text;
592 return menu->sym->name;
596 struct menu *menu_get_root_menu(struct menu *menu)
601 struct menu *menu_get_parent_menu(struct menu *menu)
605 for (; menu != &rootmenu; menu = menu->parent) {
606 type = menu->prompt ? menu->prompt->type : 0;
613 bool menu_has_help(struct menu *menu)
615 return menu->help != NULL;
618 const char *menu_get_help(struct menu *menu)
626 static void get_prompt_str(struct gstr *r, struct property *prop,
627 struct list_head *head)
630 struct menu *submenu[8], *menu, *location = NULL;
631 struct jump_key *jump = NULL;
633 str_printf(r, _("Prompt: %s\n"), _(prop->text));
634 menu = prop->menu->parent;
635 for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
636 bool accessible = menu_is_visible(menu);
639 if (location == NULL && accessible)
642 if (head && location) {
643 jump = xmalloc(sizeof(struct jump_key));
645 if (menu_is_visible(prop->menu)) {
647 * There is not enough room to put the hint at the
648 * beginning of the "Prompt" line. Put the hint on the
649 * last "Location" line even when it would belong on
652 jump->target = prop->menu;
654 jump->target = location;
656 if (list_empty(head))
659 jump->index = list_entry(head->prev, struct jump_key,
662 list_add_tail(&jump->entries, head);
666 str_printf(r, _(" Location:\n"));
667 for (j = 4; --i >= 0; j += 2) {
669 if (jump && menu == location)
670 jump->offset = strlen(r->s);
671 str_printf(r, "%*c-> %s", j, ' ',
672 _(menu_get_prompt(menu)));
674 str_printf(r, " (%s [=%s])", menu->sym->name ?
675 menu->sym->name : _("<choice>"),
676 sym_get_string_value(menu->sym));
684 * get property of type P_SYMBOL
686 static struct property *get_symbol_prop(struct symbol *sym)
688 struct property *prop = NULL;
690 for_all_properties(sym, prop, P_SYMBOL)
695 static void get_symbol_props_str(struct gstr *r, struct symbol *sym,
696 enum prop_type tok, const char *prefix)
699 struct property *prop;
701 for_all_properties(sym, prop, tok) {
703 str_append(r, prefix);
706 str_printf(r, " && ");
707 expr_gstr_print(prop->expr, r);
714 * head is optional and may be NULL
716 static void get_symbol_str(struct gstr *r, struct symbol *sym,
717 struct list_head *head)
719 struct property *prop;
721 if (sym && sym->name) {
722 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
723 sym_get_string_value(sym));
724 str_printf(r, "Type : %s\n", sym_type_name(sym->type));
725 if (sym->type == S_INT || sym->type == S_HEX) {
726 prop = sym_get_range_prop(sym);
728 str_printf(r, "Range : ");
729 expr_gstr_print(prop->expr, r);
734 for_all_prompts(sym, prop)
735 get_prompt_str(r, prop, head);
737 prop = get_symbol_prop(sym);
739 str_printf(r, _(" Defined at %s:%d\n"), prop->menu->file->name,
741 if (!expr_is_yes(prop->visible.expr)) {
742 str_append(r, _(" Depends on: "));
743 expr_gstr_print(prop->visible.expr, r);
748 get_symbol_props_str(r, sym, P_SELECT, _(" Selects: "));
749 if (sym->rev_dep.expr) {
750 str_append(r, _(" Selected by: "));
751 expr_gstr_print(sym->rev_dep.expr, r);
755 get_symbol_props_str(r, sym, P_IMPLY, _(" Implies: "));
756 if (sym->implied.expr) {
757 str_append(r, _(" Implied by: "));
758 expr_gstr_print(sym->implied.expr, r);
762 str_append(r, "\n\n");
765 struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head)
768 struct gstr res = str_new();
771 for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
772 get_symbol_str(&res, sym, head);
774 str_append(&res, _("No matches found.\n"));
779 void menu_get_ext_help(struct menu *menu, struct gstr *help)
781 struct symbol *sym = menu->sym;
782 const char *help_text = nohelp_text;
784 if (menu_has_help(menu)) {
786 str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
787 help_text = menu_get_help(menu);
789 str_printf(help, "%s\n", _(help_text));
791 get_symbol_str(help, sym, NULL);