2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
11 #include <sys/utsname.h>
14 #define LKC_DIRECT_LINK
17 struct symbol symbol_yes = {
20 .flags = SYMBOL_CONST|SYMBOL_VALID,
24 .flags = SYMBOL_CONST|SYMBOL_VALID,
28 .flags = SYMBOL_CONST|SYMBOL_VALID,
32 .flags = SYMBOL_VALID,
35 struct symbol *sym_defconfig_list;
36 struct symbol *modules_sym;
39 struct expr *sym_env_list;
41 void sym_add_default(struct symbol *sym, const char *def)
43 struct property *prop = prop_alloc(P_DEFAULT, sym);
45 prop->expr = expr_alloc_symbol(sym_lookup(def, 1));
54 static bool inited = false;
64 sym = sym_lookup("UNAME_RELEASE", 0);
66 sym->flags |= SYMBOL_AUTO;
68 sym_add_default(sym, uts.release);
70 sym_add_default(sym, "");
74 enum symbol_type sym_get_type(struct symbol *sym)
76 enum symbol_type type = sym->type;
78 if (type == S_TRISTATE) {
79 if (sym_is_choice_value(sym) && sym->visible == yes)
81 else if (modules_val == no)
87 const char *sym_type_name(enum symbol_type type)
108 struct property *sym_get_choice_prop(struct symbol *sym)
110 struct property *prop;
112 for_all_choices(sym, prop)
117 struct property *sym_get_env_prop(struct symbol *sym)
119 struct property *prop;
121 for_all_properties(sym, prop, P_ENV)
126 struct property *sym_get_default_prop(struct symbol *sym)
128 struct property *prop;
130 for_all_defaults(sym, prop) {
131 prop->visible.tri = expr_calc_value(prop->visible.expr);
132 if (prop->visible.tri != no)
138 struct property *sym_get_range_prop(struct symbol *sym)
140 struct property *prop;
142 for_all_properties(sym, prop, P_RANGE) {
143 prop->visible.tri = expr_calc_value(prop->visible.expr);
144 if (prop->visible.tri != no)
150 static int sym_get_range_val(struct symbol *sym, int base)
163 return strtol(sym->curr.val, NULL, base);
166 static void sym_validate_range(struct symbol *sym)
168 struct property *prop;
182 prop = sym_get_range_prop(sym);
185 val = strtol(sym->curr.val, NULL, base);
186 val2 = sym_get_range_val(prop->expr->left.sym, base);
188 val2 = sym_get_range_val(prop->expr->right.sym, base);
192 if (sym->type == S_INT)
193 sprintf(str, "%d", val2);
195 sprintf(str, "0x%x", val2);
196 sym->curr.val = strdup(str);
199 static void sym_calc_visibility(struct symbol *sym)
201 struct property *prop;
204 /* any prompt visible? */
206 for_all_prompts(sym, prop) {
207 prop->visible.tri = expr_calc_value(prop->visible.expr);
208 tri = EXPR_OR(tri, prop->visible.tri);
210 if (tri == mod && (sym->type != S_TRISTATE || modules_val == no))
212 if (sym->visible != tri) {
214 sym_set_changed(sym);
216 if (sym_is_choice_value(sym))
219 if (sym->rev_dep.expr)
220 tri = expr_calc_value(sym->rev_dep.expr);
221 if (tri == mod && sym_get_type(sym) == S_BOOLEAN)
223 if (sym->rev_dep.tri != tri) {
224 sym->rev_dep.tri = tri;
225 sym_set_changed(sym);
229 static struct symbol *sym_calc_choice(struct symbol *sym)
231 struct symbol *def_sym;
232 struct property *prop;
235 /* is the user choice visible? */
236 def_sym = sym->def[S_DEF_USER].val;
238 sym_calc_visibility(def_sym);
239 if (def_sym->visible != no)
243 /* any of the defaults visible? */
244 for_all_defaults(sym, prop) {
245 prop->visible.tri = expr_calc_value(prop->visible.expr);
246 if (prop->visible.tri == no)
248 def_sym = prop_get_symbol(prop);
249 sym_calc_visibility(def_sym);
250 if (def_sym->visible != no)
254 /* just get the first visible value */
255 prop = sym_get_choice_prop(sym);
256 expr_list_for_each_sym(prop->expr, e, def_sym) {
257 sym_calc_visibility(def_sym);
258 if (def_sym->visible != no)
262 /* no choice? reset tristate value */
267 void sym_calc_value(struct symbol *sym)
269 struct symbol_value newval, oldval;
270 struct property *prop;
276 if (sym->flags & SYMBOL_VALID)
278 sym->flags |= SYMBOL_VALID;
286 newval = symbol_empty.curr;
290 newval = symbol_no.curr;
293 sym->curr.val = sym->name;
297 if (!sym_is_choice_value(sym))
298 sym->flags &= ~SYMBOL_WRITE;
300 sym_calc_visibility(sym);
302 /* set default if recursively called */
305 switch (sym_get_type(sym)) {
308 if (sym_is_choice_value(sym) && sym->visible == yes) {
309 prop = sym_get_choice_prop(sym);
310 newval.tri = (prop_get_symbol(prop)->curr.val == sym) ? yes : no;
312 if (sym->visible != no) {
313 /* if the symbol is visible use the user value
314 * if available, otherwise try the default value
316 sym->flags |= SYMBOL_WRITE;
317 if (sym_has_value(sym)) {
318 newval.tri = EXPR_AND(sym->def[S_DEF_USER].tri,
323 if (sym->rev_dep.tri != no)
324 sym->flags |= SYMBOL_WRITE;
325 if (!sym_is_choice(sym)) {
326 prop = sym_get_default_prop(sym);
328 sym->flags |= SYMBOL_WRITE;
329 newval.tri = EXPR_AND(expr_calc_value(prop->expr),
334 newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri);
336 if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN)
342 if (sym->visible != no) {
343 sym->flags |= SYMBOL_WRITE;
344 if (sym_has_value(sym)) {
345 newval.val = sym->def[S_DEF_USER].val;
349 prop = sym_get_default_prop(sym);
351 struct symbol *ds = prop_get_symbol(prop);
353 sym->flags |= SYMBOL_WRITE;
355 newval.val = ds->curr.val;
363 if (sym->flags & SYMBOL_AUTO)
364 sym->flags &= ~SYMBOL_WRITE;
367 if (sym_is_choice(sym) && newval.tri == yes)
368 sym->curr.val = sym_calc_choice(sym);
369 sym_validate_range(sym);
371 if (memcmp(&oldval, &sym->curr, sizeof(oldval))) {
372 sym_set_changed(sym);
373 if (modules_sym == sym) {
374 sym_set_all_changed();
375 modules_val = modules_sym->curr.tri;
379 if (sym_is_choice(sym)) {
380 struct symbol *choice_sym;
381 int flags = sym->flags & (SYMBOL_CHANGED | SYMBOL_WRITE);
383 prop = sym_get_choice_prop(sym);
384 expr_list_for_each_sym(prop->expr, e, choice_sym) {
385 choice_sym->flags |= flags;
386 if (flags & SYMBOL_CHANGED)
387 sym_set_changed(choice_sym);
392 void sym_clear_all_valid(void)
397 for_all_symbols(i, sym)
398 sym->flags &= ~SYMBOL_VALID;
399 sym_add_change_count(1);
401 sym_calc_value(modules_sym);
404 void sym_set_changed(struct symbol *sym)
406 struct property *prop;
408 sym->flags |= SYMBOL_CHANGED;
409 for (prop = sym->prop; prop; prop = prop->next) {
411 prop->menu->flags |= MENU_CHANGED;
415 void sym_set_all_changed(void)
420 for_all_symbols(i, sym)
421 sym_set_changed(sym);
424 bool sym_tristate_within_range(struct symbol *sym, tristate val)
426 int type = sym_get_type(sym);
428 if (sym->visible == no)
431 if (type != S_BOOLEAN && type != S_TRISTATE)
434 if (type == S_BOOLEAN && val == mod)
436 if (sym->visible <= sym->rev_dep.tri)
438 if (sym_is_choice_value(sym) && sym->visible == yes)
440 return val >= sym->rev_dep.tri && val <= sym->visible;
443 bool sym_set_tristate_value(struct symbol *sym, tristate val)
445 tristate oldval = sym_get_tristate_value(sym);
447 if (oldval != val && !sym_tristate_within_range(sym, val))
450 if (!(sym->flags & SYMBOL_DEF_USER)) {
451 sym->flags |= SYMBOL_DEF_USER;
452 sym_set_changed(sym);
455 * setting a choice value also resets the new flag of the choice
456 * symbol and all other choice values.
458 if (sym_is_choice_value(sym) && val == yes) {
459 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
460 struct property *prop;
463 cs->def[S_DEF_USER].val = sym;
464 cs->flags |= SYMBOL_DEF_USER;
465 prop = sym_get_choice_prop(cs);
466 for (e = prop->expr; e; e = e->left.expr) {
467 if (e->right.sym->visible != no)
468 e->right.sym->flags |= SYMBOL_DEF_USER;
472 sym->def[S_DEF_USER].tri = val;
474 sym_clear_all_valid();
479 tristate sym_toggle_tristate_value(struct symbol *sym)
481 tristate oldval, newval;
483 oldval = newval = sym_get_tristate_value(sym);
496 if (sym_set_tristate_value(sym, newval))
498 } while (oldval != newval);
502 bool sym_string_valid(struct symbol *sym, const char *str)
515 if (ch == '0' && *str != 0)
517 while ((ch = *str++)) {
523 if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))
529 } while ((ch = *str++));
545 bool sym_string_within_range(struct symbol *sym, const char *str)
547 struct property *prop;
552 return sym_string_valid(sym, str);
554 if (!sym_string_valid(sym, str))
556 prop = sym_get_range_prop(sym);
559 val = strtol(str, NULL, 10);
560 return val >= sym_get_range_val(prop->expr->left.sym, 10) &&
561 val <= sym_get_range_val(prop->expr->right.sym, 10);
563 if (!sym_string_valid(sym, str))
565 prop = sym_get_range_prop(sym);
568 val = strtol(str, NULL, 16);
569 return val >= sym_get_range_val(prop->expr->left.sym, 16) &&
570 val <= sym_get_range_val(prop->expr->right.sym, 16);
575 return sym_tristate_within_range(sym, yes);
577 return sym_tristate_within_range(sym, mod);
579 return sym_tristate_within_range(sym, no);
587 bool sym_set_string_value(struct symbol *sym, const char *newval)
598 return sym_set_tristate_value(sym, yes);
600 return sym_set_tristate_value(sym, mod);
602 return sym_set_tristate_value(sym, no);
609 if (!sym_string_within_range(sym, newval))
612 if (!(sym->flags & SYMBOL_DEF_USER)) {
613 sym->flags |= SYMBOL_DEF_USER;
614 sym_set_changed(sym);
617 oldval = sym->def[S_DEF_USER].val;
618 size = strlen(newval) + 1;
619 if (sym->type == S_HEX && (newval[0] != '0' || (newval[1] != 'x' && newval[1] != 'X'))) {
621 sym->def[S_DEF_USER].val = val = malloc(size);
624 } else if (!oldval || strcmp(oldval, newval))
625 sym->def[S_DEF_USER].val = val = malloc(size);
630 free((void *)oldval);
631 sym_clear_all_valid();
636 const char *sym_get_string_value(struct symbol *sym)
643 val = sym_get_tristate_value(sym);
656 return (const char *)sym->curr.val;
659 bool sym_is_changable(struct symbol *sym)
661 return sym->visible > sym->rev_dep.tri;
664 struct symbol *sym_lookup(const char *name, int isconst)
666 struct symbol *symbol;
672 if (name[0] && !name[1]) {
674 case 'y': return &symbol_yes;
675 case 'm': return &symbol_mod;
676 case 'n': return &symbol_no;
679 for (ptr = name; *ptr; ptr++)
683 for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
684 if (!strcmp(symbol->name, name)) {
685 if ((isconst && symbol->flags & SYMBOL_CONST) ||
686 (!isconst && !(symbol->flags & SYMBOL_CONST)))
690 new_name = strdup(name);
696 symbol = malloc(sizeof(*symbol));
697 memset(symbol, 0, sizeof(*symbol));
698 symbol->name = new_name;
699 symbol->type = S_UNKNOWN;
701 symbol->flags |= SYMBOL_CONST;
703 symbol->next = symbol_hash[hash];
704 symbol_hash[hash] = symbol;
709 struct symbol *sym_find(const char *name)
711 struct symbol *symbol = NULL;
718 if (name[0] && !name[1]) {
720 case 'y': return &symbol_yes;
721 case 'm': return &symbol_mod;
722 case 'n': return &symbol_no;
725 for (ptr = name; *ptr; ptr++)
729 for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
730 if (!strcmp(symbol->name, name) &&
731 !(symbol->flags & SYMBOL_CONST))
738 struct symbol **sym_re_search(const char *pattern)
740 struct symbol *sym, **sym_arr = NULL;
746 if (strlen(pattern) == 0)
748 if (regcomp(&re, pattern, REG_EXTENDED|REG_NOSUB|REG_ICASE))
751 for_all_symbols(i, sym) {
752 if (sym->flags & SYMBOL_CONST || !sym->name)
754 if (regexec(&re, sym->name, 0, NULL, 0))
756 if (cnt + 1 >= size) {
759 sym_arr = realloc(sym_arr, size * sizeof(struct symbol *));
765 sym_arr[cnt++] = sym;
775 struct symbol *sym_check_deps(struct symbol *sym);
777 static struct symbol *sym_check_expr_deps(struct expr *e)
786 sym = sym_check_expr_deps(e->left.expr);
789 return sym_check_expr_deps(e->right.expr);
791 return sym_check_expr_deps(e->left.expr);
794 sym = sym_check_deps(e->left.sym);
797 return sym_check_deps(e->right.sym);
799 return sym_check_deps(e->left.sym);
803 printf("Oops! How to check %d?\n", e->type);
807 /* return NULL when dependencies are OK */
808 struct symbol *sym_check_deps(struct symbol *sym)
811 struct property *prop;
813 if (sym->flags & SYMBOL_CHECK) {
814 fprintf(stderr, "%s:%d:error: found recursive dependency: %s",
815 sym->prop->file->name, sym->prop->lineno, sym->name);
818 if (sym->flags & SYMBOL_CHECKED)
821 sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);
822 sym2 = sym_check_expr_deps(sym->rev_dep.expr);
826 for (prop = sym->prop; prop; prop = prop->next) {
827 if (prop->type == P_CHOICE || prop->type == P_SELECT)
829 sym2 = sym_check_expr_deps(prop->visible.expr);
832 if (prop->type != P_DEFAULT || sym_is_choice(sym))
834 sym2 = sym_check_expr_deps(prop->expr);
840 fprintf(stderr, " -> %s%s", sym->name, sym2 == sym? "\n": "");
841 sym->flags &= ~SYMBOL_CHECK;
845 struct property *prop_alloc(enum prop_type type, struct symbol *sym)
847 struct property *prop;
848 struct property **propp;
850 prop = malloc(sizeof(*prop));
851 memset(prop, 0, sizeof(*prop));
854 prop->file = current_file;
855 prop->lineno = zconf_lineno();
857 /* append property to the prop list of symbol */
859 for (propp = &sym->prop; *propp; propp = &(*propp)->next)
867 struct symbol *prop_get_symbol(struct property *prop)
869 if (prop->expr && (prop->expr->type == E_SYMBOL ||
870 prop->expr->type == E_LIST))
871 return prop->expr->left.sym;
875 const char *prop_get_type_name(enum prop_type type)
900 void prop_add_env(const char *env)
902 struct symbol *sym, *sym2;
903 struct property *prop;
906 sym = current_entry->sym;
907 sym->flags |= SYMBOL_AUTO;
908 for_all_properties(sym, prop, P_ENV) {
909 sym2 = prop_get_symbol(prop);
910 if (strcmp(sym2->name, env))
911 menu_warn(current_entry, "redefining environment symbol from %s",
916 prop = prop_alloc(P_ENV, sym);
917 prop->expr = expr_alloc_symbol(sym_lookup(env, 1));
919 sym_env_list = expr_alloc_one(E_LIST, sym_env_list);
920 sym_env_list->right.sym = sym;
924 sym_add_default(sym, p);
926 menu_warn(current_entry, "environment variable %s undefined", env);