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");
215 sym_defconfig_list->flags |= SYMBOL_AUTO;
220 case T_OPT_ALLNOCONFIG_Y:
221 current_entry->sym->flags |= SYMBOL_ALLNOCONFIG_Y;
226 static int menu_validate_number(struct symbol *sym, struct symbol *sym2)
228 return sym2->type == S_INT || sym2->type == S_HEX ||
229 (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
232 static void sym_check_prop(struct symbol *sym)
234 struct property *prop;
238 for (prop = sym->prop; prop; prop = prop->next) {
239 switch (prop->type) {
241 if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
242 prop->expr->type != E_SYMBOL)
244 "default for config symbol '%s'"
245 " must be a single symbol", sym->name);
246 if (prop->expr->type != E_SYMBOL)
248 sym2 = prop_get_symbol(prop);
249 if (sym->type == S_HEX || sym->type == S_INT) {
250 if (!menu_validate_number(sym, sym2))
252 "'%s': number is invalid",
255 if (sym_is_choice(sym)) {
256 struct property *choice_prop =
257 sym_get_choice_prop(sym2);
260 prop_get_symbol(choice_prop) != sym)
262 "choice default symbol '%s' is not contained in the choice",
268 use = prop->type == P_SELECT ? "select" : "imply";
269 sym2 = prop_get_symbol(prop);
270 if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
272 "config symbol '%s' uses %s, but is "
273 "not bool or tristate", sym->name, use);
274 else if (sym2->type != S_UNKNOWN &&
275 sym2->type != S_BOOLEAN &&
276 sym2->type != S_TRISTATE)
278 "'%s' has wrong type. '%s' only "
279 "accept arguments of bool and "
280 "tristate type", sym2->name, use);
283 if (sym->type != S_INT && sym->type != S_HEX)
284 prop_warn(prop, "range is only allowed "
285 "for int or hex symbols");
286 if (!menu_validate_number(sym, prop->expr->left.sym) ||
287 !menu_validate_number(sym, prop->expr->right.sym))
288 prop_warn(prop, "range is invalid");
296 void menu_finalize(struct menu *parent)
298 struct menu *menu, *last_menu;
300 struct property *prop;
301 struct expr *parentdep, *basedep, *dep, *dep2, **ep;
306 * This menu node has children. We (recursively) process them
307 * and propagate parent dependencies before moving on.
310 if (sym && sym_is_choice(sym)) {
311 if (sym->type == S_UNKNOWN) {
312 /* find the first choice value to find out choice type */
313 current_entry = parent;
314 for (menu = parent->list; menu; menu = menu->next) {
315 if (menu->sym && menu->sym->type != S_UNKNOWN) {
316 menu_set_type(menu->sym->type);
321 /* set the type of the remaining choice values */
322 for (menu = parent->list; menu; menu = menu->next) {
323 current_entry = menu;
324 if (menu->sym && menu->sym->type == S_UNKNOWN)
325 menu_set_type(sym->type);
329 * Use the choice itself as the parent dependency of
330 * the contained items. This turns the mode of the
331 * choice into an upper bound on the visibility of the
332 * choice value symbols.
334 parentdep = expr_alloc_symbol(sym);
335 } else if (parent->prompt)
336 /* Menu node for 'menu' */
337 parentdep = parent->prompt->visible.expr;
339 /* Menu node for 'if' */
340 parentdep = parent->dep;
342 /* For each child menu node... */
343 for (menu = parent->list; menu; menu = menu->next) {
345 * Propagate parent dependencies to the child menu
346 * node, also rewriting and simplifying expressions
348 basedep = rewrite_m(menu->dep);
349 basedep = expr_transform(basedep);
350 basedep = expr_alloc_and(expr_copy(parentdep), basedep);
351 basedep = expr_eliminate_dups(basedep);
356 * Note: For symbols, all prompts are included
357 * too in the symbol's own property list
359 prop = menu->sym->prop;
362 * For non-symbol menu nodes, we just need to
367 /* For each property... */
368 for (; prop; prop = prop->next) {
369 if (prop->menu != menu)
373 * 1. The property lacks dependencies
374 * and so isn't location-specific,
377 * 2. The property belongs to a symbol
378 * defined in multiple locations and
379 * is from some other location. It
380 * will be handled there in that
388 * Propagate parent dependencies to the
389 * property's condition, rewriting and
390 * simplifying expressions at the same time
392 dep = rewrite_m(prop->visible.expr);
393 dep = expr_transform(dep);
394 dep = expr_alloc_and(expr_copy(basedep), dep);
395 dep = expr_eliminate_dups(dep);
396 if (menu->sym && menu->sym->type != S_TRISTATE)
397 dep = expr_trans_bool(dep);
398 prop->visible.expr = dep;
401 * Handle selects and implies, which modify the
402 * dependencies of the selected/implied symbol
404 if (prop->type == P_SELECT) {
405 struct symbol *es = prop_get_symbol(prop);
406 es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
407 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
408 } else if (prop->type == P_IMPLY) {
409 struct symbol *es = prop_get_symbol(prop);
410 es->implied.expr = expr_alloc_or(es->implied.expr,
411 expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
416 if (sym && sym_is_choice(sym))
417 expr_free(parentdep);
420 * Recursively process children in the same fashion before
423 for (menu = parent->list; menu; menu = menu->next)
427 * Automatic submenu creation. If sym is a symbol and A, B, C,
428 * ... are consecutive items (symbols, menus, ifs, etc.) that
429 * all depend on sym, then the following menu structure is
438 * This also works recursively, giving the following structure
439 * if A is a symbol and B depends on A:
448 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
449 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
450 basedep = expr_eliminate_dups(expr_transform(basedep));
452 /* Examine consecutive elements after sym */
454 for (menu = parent->next; menu; menu = menu->next) {
455 dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
456 if (!expr_contains_symbol(dep, sym))
457 /* No dependency, quit */
459 if (expr_depends_symbol(dep, sym))
460 /* Absolute dependency, put in submenu */
464 * Also consider it a dependency on sym if our
465 * dependencies contain sym and are a "superset" of
466 * sym's dependencies, e.g. '(sym || Q) && R' when sym
469 * Note that 'R' might be from an enclosing menu or if,
470 * making this a more common case than it might seem.
472 dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
473 dep = expr_eliminate_dups(expr_transform(dep));
474 dep2 = expr_copy(basedep);
475 expr_eliminate_eq(&dep, &dep2);
477 if (!expr_is_yes(dep2)) {
478 /* Not superset, quit */
482 /* Superset, put in submenu */
486 menu->parent = parent;
491 parent->list = parent->next;
492 parent->next = last_menu->next;
493 last_menu->next = NULL;
496 sym->dir_dep.expr = expr_alloc_or(sym->dir_dep.expr, parent->dep);
498 for (menu = parent->list; menu; menu = menu->next) {
499 if (sym && sym_is_choice(sym) &&
500 menu->sym && !sym_is_choice_value(menu->sym)) {
501 current_entry = menu;
502 menu->sym->flags |= SYMBOL_CHOICEVAL;
504 menu_warn(menu, "choice value must have a prompt");
505 for (prop = menu->sym->prop; prop; prop = prop->next) {
506 if (prop->type == P_DEFAULT)
507 prop_warn(prop, "defaults for choice "
508 "values not supported");
509 if (prop->menu == menu)
511 if (prop->type == P_PROMPT &&
512 prop->menu->parent->sym != sym)
513 prop_warn(prop, "choice value used outside its choice group");
515 /* Non-tristate choice values of tristate choices must
516 * depend on the choice being set to Y. The choice
517 * values' dependencies were propagated to their
518 * properties above, so the change here must be re-
521 if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
522 basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
523 menu->dep = expr_alloc_and(basedep, menu->dep);
524 for (prop = menu->sym->prop; prop; prop = prop->next) {
525 if (prop->menu != menu)
527 prop->visible.expr = expr_alloc_and(expr_copy(basedep),
531 menu_add_symbol(P_CHOICE, sym, NULL);
532 prop = sym_get_choice_prop(sym);
533 for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
535 *ep = expr_alloc_one(E_LIST, NULL);
536 (*ep)->right.sym = menu->sym;
540 * This code serves two purposes:
542 * (1) Flattening 'if' blocks, which do not specify a submenu
543 * and only add dependencies.
545 * (Automatic submenu creation might still create a submenu
546 * from an 'if' before this code runs.)
548 * (2) "Undoing" any automatic submenus created earlier below
549 * promptless symbols.
554 * if ... (or promptless symbol)
562 * if ... (or promptless symbol)
567 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
568 for (last_menu = menu->list; ; last_menu = last_menu->next) {
569 last_menu->parent = parent;
570 if (!last_menu->next)
573 last_menu->next = menu->next;
574 menu->next = menu->list;
579 if (sym && !(sym->flags & SYMBOL_WARNED)) {
580 if (sym->type == S_UNKNOWN)
581 menu_warn(parent, "config symbol defined without type");
583 if (sym_is_choice(sym) && !parent->prompt)
584 menu_warn(parent, "choice must have a prompt");
586 /* Check properties connected to this symbol */
588 sym->flags |= SYMBOL_WARNED;
592 * For non-optional choices, add a reverse dependency (corresponding to
593 * a select) of '<visibility> && m'. This prevents the user from
594 * setting the choice mode to 'n' when the choice is visible.
596 * This would also work for non-choice symbols, but only non-optional
597 * choices clear SYMBOL_OPTIONAL as of writing. Choices are implemented
598 * as a type of symbol.
600 if (sym && !sym_is_optional(sym) && parent->prompt) {
601 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
602 expr_alloc_and(parent->prompt->visible.expr,
603 expr_alloc_symbol(&symbol_mod)));
607 bool menu_has_prompt(struct menu *menu)
615 * Determine if a menu is empty.
616 * A menu is considered empty if it contains no or only
619 bool menu_is_empty(struct menu *menu)
623 for (child = menu->list; child; child = child->next) {
624 if (menu_is_visible(child))
630 bool menu_is_visible(struct menu *menu)
639 if (menu->visibility) {
640 if (expr_calc_value(menu->visibility) == no)
647 visible = menu->prompt->visible.tri;
649 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
654 if (!sym || sym_get_tristate_value(menu->sym) == no)
657 for (child = menu->list; child; child = child->next) {
658 if (menu_is_visible(child)) {
660 sym->flags |= SYMBOL_DEF_USER;
668 const char *menu_get_prompt(struct menu *menu)
671 return menu->prompt->text;
673 return menu->sym->name;
677 struct menu *menu_get_root_menu(struct menu *menu)
682 struct menu *menu_get_parent_menu(struct menu *menu)
686 for (; menu != &rootmenu; menu = menu->parent) {
687 type = menu->prompt ? menu->prompt->type : 0;
694 bool menu_has_help(struct menu *menu)
696 return menu->help != NULL;
699 const char *menu_get_help(struct menu *menu)
707 static void get_prompt_str(struct gstr *r, struct property *prop,
708 struct list_head *head)
711 struct menu *submenu[8], *menu, *location = NULL;
712 struct jump_key *jump = NULL;
714 str_printf(r, _("Prompt: %s\n"), _(prop->text));
715 menu = prop->menu->parent;
716 for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
717 bool accessible = menu_is_visible(menu);
720 if (location == NULL && accessible)
723 if (head && location) {
724 jump = xmalloc(sizeof(struct jump_key));
726 if (menu_is_visible(prop->menu)) {
728 * There is not enough room to put the hint at the
729 * beginning of the "Prompt" line. Put the hint on the
730 * last "Location" line even when it would belong on
733 jump->target = prop->menu;
735 jump->target = location;
737 if (list_empty(head))
740 jump->index = list_entry(head->prev, struct jump_key,
743 list_add_tail(&jump->entries, head);
747 str_printf(r, _(" Location:\n"));
748 for (j = 4; --i >= 0; j += 2) {
750 if (jump && menu == location)
751 jump->offset = strlen(r->s);
752 str_printf(r, "%*c-> %s", j, ' ',
753 _(menu_get_prompt(menu)));
755 str_printf(r, " (%s [=%s])", menu->sym->name ?
756 menu->sym->name : _("<choice>"),
757 sym_get_string_value(menu->sym));
765 * get property of type P_SYMBOL
767 static struct property *get_symbol_prop(struct symbol *sym)
769 struct property *prop = NULL;
771 for_all_properties(sym, prop, P_SYMBOL)
776 static void get_symbol_props_str(struct gstr *r, struct symbol *sym,
777 enum prop_type tok, const char *prefix)
780 struct property *prop;
782 for_all_properties(sym, prop, tok) {
784 str_append(r, prefix);
787 str_printf(r, " && ");
788 expr_gstr_print(prop->expr, r);
795 * head is optional and may be NULL
797 static void get_symbol_str(struct gstr *r, struct symbol *sym,
798 struct list_head *head)
800 struct property *prop;
802 if (sym && sym->name) {
803 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
804 sym_get_string_value(sym));
805 str_printf(r, "Type : %s\n", sym_type_name(sym->type));
806 if (sym->type == S_INT || sym->type == S_HEX) {
807 prop = sym_get_range_prop(sym);
809 str_printf(r, "Range : ");
810 expr_gstr_print(prop->expr, r);
815 for_all_prompts(sym, prop)
816 get_prompt_str(r, prop, head);
818 prop = get_symbol_prop(sym);
820 str_printf(r, _(" Defined at %s:%d\n"), prop->menu->file->name,
822 if (!expr_is_yes(prop->visible.expr)) {
823 str_append(r, _(" Depends on: "));
824 expr_gstr_print(prop->visible.expr, r);
829 get_symbol_props_str(r, sym, P_SELECT, _(" Selects: "));
830 if (sym->rev_dep.expr) {
831 expr_gstr_print_revdep(sym->rev_dep.expr, r, yes, " Selected by [y]:\n");
832 expr_gstr_print_revdep(sym->rev_dep.expr, r, mod, " Selected by [m]:\n");
833 expr_gstr_print_revdep(sym->rev_dep.expr, r, no, " Selected by [n]:\n");
836 get_symbol_props_str(r, sym, P_IMPLY, _(" Implies: "));
837 if (sym->implied.expr) {
838 expr_gstr_print_revdep(sym->implied.expr, r, yes, " Implied by [y]:\n");
839 expr_gstr_print_revdep(sym->implied.expr, r, mod, " Implied by [m]:\n");
840 expr_gstr_print_revdep(sym->implied.expr, r, no, " Implied by [n]:\n");
843 str_append(r, "\n\n");
846 struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head)
849 struct gstr res = str_new();
852 for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
853 get_symbol_str(&res, sym, head);
855 str_append(&res, _("No matches found.\n"));
860 void menu_get_ext_help(struct menu *menu, struct gstr *help)
862 struct symbol *sym = menu->sym;
863 const char *help_text = nohelp_text;
865 if (menu_has_help(menu)) {
867 str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
868 help_text = menu_get_help(menu);
870 str_printf(help, "%s\n", _(help_text));
872 get_symbol_str(help, sym, NULL);