2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
10 #include <sys/utsname.h>
12 #define LKC_DIRECT_LINK
15 struct symbol symbol_yes = {
18 .flags = SYMBOL_CONST|SYMBOL_VALID,
22 .flags = SYMBOL_CONST|SYMBOL_VALID,
26 .flags = SYMBOL_CONST|SYMBOL_VALID,
30 .flags = SYMBOL_VALID,
33 struct symbol *sym_defconfig_list;
34 struct symbol *modules_sym;
37 struct expr *sym_env_list;
39 void sym_add_default(struct symbol *sym, const char *def)
41 struct property *prop = prop_alloc(P_DEFAULT, sym);
43 prop->expr = expr_alloc_symbol(sym_lookup(def, 1));
50 static bool inited = false;
58 sym = sym_lookup("UNAME_RELEASE", 0);
60 sym->flags |= SYMBOL_AUTO;
61 sym_add_default(sym, uts.release);
64 enum symbol_type sym_get_type(struct symbol *sym)
66 enum symbol_type type = sym->type;
68 if (type == S_TRISTATE) {
69 if (sym_is_choice_value(sym) && sym->visible == yes)
71 else if (modules_val == no)
77 const char *sym_type_name(enum symbol_type type)
98 struct property *sym_get_choice_prop(struct symbol *sym)
100 struct property *prop;
102 for_all_choices(sym, prop)
107 struct property *sym_get_env_prop(struct symbol *sym)
109 struct property *prop;
111 for_all_properties(sym, prop, P_ENV)
116 struct property *sym_get_default_prop(struct symbol *sym)
118 struct property *prop;
120 for_all_defaults(sym, prop) {
121 prop->visible.tri = expr_calc_value(prop->visible.expr);
122 if (prop->visible.tri != no)
128 struct property *sym_get_range_prop(struct symbol *sym)
130 struct property *prop;
132 for_all_properties(sym, prop, P_RANGE) {
133 prop->visible.tri = expr_calc_value(prop->visible.expr);
134 if (prop->visible.tri != no)
140 static int sym_get_range_val(struct symbol *sym, int base)
153 return strtol(sym->curr.val, NULL, base);
156 static void sym_validate_range(struct symbol *sym)
158 struct property *prop;
172 prop = sym_get_range_prop(sym);
175 val = strtol(sym->curr.val, NULL, base);
176 val2 = sym_get_range_val(prop->expr->left.sym, base);
178 val2 = sym_get_range_val(prop->expr->right.sym, base);
182 if (sym->type == S_INT)
183 sprintf(str, "%d", val2);
185 sprintf(str, "0x%x", val2);
186 sym->curr.val = strdup(str);
189 static void sym_calc_visibility(struct symbol *sym)
191 struct property *prop;
194 /* any prompt visible? */
196 for_all_prompts(sym, prop) {
197 prop->visible.tri = expr_calc_value(prop->visible.expr);
198 tri = EXPR_OR(tri, prop->visible.tri);
200 if (tri == mod && (sym->type != S_TRISTATE || modules_val == no))
202 if (sym->visible != tri) {
204 sym_set_changed(sym);
206 if (sym_is_choice_value(sym))
209 if (sym->rev_dep.expr)
210 tri = expr_calc_value(sym->rev_dep.expr);
211 if (tri == mod && sym_get_type(sym) == S_BOOLEAN)
213 if (sym->rev_dep.tri != tri) {
214 sym->rev_dep.tri = tri;
215 sym_set_changed(sym);
219 static struct symbol *sym_calc_choice(struct symbol *sym)
221 struct symbol *def_sym;
222 struct property *prop;
225 /* is the user choice visible? */
226 def_sym = sym->def[S_DEF_USER].val;
228 sym_calc_visibility(def_sym);
229 if (def_sym->visible != no)
233 /* any of the defaults visible? */
234 for_all_defaults(sym, prop) {
235 prop->visible.tri = expr_calc_value(prop->visible.expr);
236 if (prop->visible.tri == no)
238 def_sym = prop_get_symbol(prop);
239 sym_calc_visibility(def_sym);
240 if (def_sym->visible != no)
244 /* just get the first visible value */
245 prop = sym_get_choice_prop(sym);
246 expr_list_for_each_sym(prop->expr, e, def_sym) {
247 sym_calc_visibility(def_sym);
248 if (def_sym->visible != no)
252 /* no choice? reset tristate value */
257 void sym_calc_value(struct symbol *sym)
259 struct symbol_value newval, oldval;
260 struct property *prop;
266 if (sym->flags & SYMBOL_VALID)
268 sym->flags |= SYMBOL_VALID;
276 newval = symbol_empty.curr;
280 newval = symbol_no.curr;
283 sym->curr.val = sym->name;
287 if (!sym_is_choice_value(sym))
288 sym->flags &= ~SYMBOL_WRITE;
290 sym_calc_visibility(sym);
292 /* set default if recursively called */
295 switch (sym_get_type(sym)) {
298 if (sym_is_choice_value(sym) && sym->visible == yes) {
299 prop = sym_get_choice_prop(sym);
300 newval.tri = (prop_get_symbol(prop)->curr.val == sym) ? yes : no;
301 } else if (EXPR_OR(sym->visible, sym->rev_dep.tri) != no) {
302 sym->flags |= SYMBOL_WRITE;
303 if (sym_has_value(sym))
304 newval.tri = sym->def[S_DEF_USER].tri;
305 else if (!sym_is_choice(sym)) {
306 prop = sym_get_default_prop(sym);
308 newval.tri = expr_calc_value(prop->expr);
310 newval.tri = EXPR_OR(EXPR_AND(newval.tri, sym->visible), sym->rev_dep.tri);
311 } else if (!sym_is_choice(sym)) {
312 prop = sym_get_default_prop(sym);
314 sym->flags |= SYMBOL_WRITE;
315 newval.tri = expr_calc_value(prop->expr);
318 if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN)
324 if (sym->visible != no) {
325 sym->flags |= SYMBOL_WRITE;
326 if (sym_has_value(sym)) {
327 newval.val = sym->def[S_DEF_USER].val;
331 prop = sym_get_default_prop(sym);
333 struct symbol *ds = prop_get_symbol(prop);
335 sym->flags |= SYMBOL_WRITE;
337 newval.val = ds->curr.val;
345 if (sym->flags & SYMBOL_AUTO)
346 sym->flags &= ~SYMBOL_WRITE;
349 if (sym_is_choice(sym) && newval.tri == yes)
350 sym->curr.val = sym_calc_choice(sym);
351 sym_validate_range(sym);
353 if (memcmp(&oldval, &sym->curr, sizeof(oldval))) {
354 sym_set_changed(sym);
355 if (modules_sym == sym) {
356 sym_set_all_changed();
357 modules_val = modules_sym->curr.tri;
361 if (sym_is_choice(sym)) {
362 struct symbol *choice_sym;
363 int flags = sym->flags & (SYMBOL_CHANGED | SYMBOL_WRITE);
365 prop = sym_get_choice_prop(sym);
366 expr_list_for_each_sym(prop->expr, e, choice_sym) {
367 choice_sym->flags |= flags;
368 if (flags & SYMBOL_CHANGED)
369 sym_set_changed(choice_sym);
374 void sym_clear_all_valid(void)
379 for_all_symbols(i, sym)
380 sym->flags &= ~SYMBOL_VALID;
381 sym_add_change_count(1);
383 sym_calc_value(modules_sym);
386 void sym_set_changed(struct symbol *sym)
388 struct property *prop;
390 sym->flags |= SYMBOL_CHANGED;
391 for (prop = sym->prop; prop; prop = prop->next) {
393 prop->menu->flags |= MENU_CHANGED;
397 void sym_set_all_changed(void)
402 for_all_symbols(i, sym)
403 sym_set_changed(sym);
406 bool sym_tristate_within_range(struct symbol *sym, tristate val)
408 int type = sym_get_type(sym);
410 if (sym->visible == no)
413 if (type != S_BOOLEAN && type != S_TRISTATE)
416 if (type == S_BOOLEAN && val == mod)
418 if (sym->visible <= sym->rev_dep.tri)
420 if (sym_is_choice_value(sym) && sym->visible == yes)
422 return val >= sym->rev_dep.tri && val <= sym->visible;
425 bool sym_set_tristate_value(struct symbol *sym, tristate val)
427 tristate oldval = sym_get_tristate_value(sym);
429 if (oldval != val && !sym_tristate_within_range(sym, val))
432 if (!(sym->flags & SYMBOL_DEF_USER)) {
433 sym->flags |= SYMBOL_DEF_USER;
434 sym_set_changed(sym);
437 * setting a choice value also resets the new flag of the choice
438 * symbol and all other choice values.
440 if (sym_is_choice_value(sym) && val == yes) {
441 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
442 struct property *prop;
445 cs->def[S_DEF_USER].val = sym;
446 cs->flags |= SYMBOL_DEF_USER;
447 prop = sym_get_choice_prop(cs);
448 for (e = prop->expr; e; e = e->left.expr) {
449 if (e->right.sym->visible != no)
450 e->right.sym->flags |= SYMBOL_DEF_USER;
454 sym->def[S_DEF_USER].tri = val;
456 sym_clear_all_valid();
461 tristate sym_toggle_tristate_value(struct symbol *sym)
463 tristate oldval, newval;
465 oldval = newval = sym_get_tristate_value(sym);
478 if (sym_set_tristate_value(sym, newval))
480 } while (oldval != newval);
484 bool sym_string_valid(struct symbol *sym, const char *str)
497 if (ch == '0' && *str != 0)
499 while ((ch = *str++)) {
505 if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))
511 } while ((ch = *str++));
527 bool sym_string_within_range(struct symbol *sym, const char *str)
529 struct property *prop;
534 return sym_string_valid(sym, str);
536 if (!sym_string_valid(sym, str))
538 prop = sym_get_range_prop(sym);
541 val = strtol(str, NULL, 10);
542 return val >= sym_get_range_val(prop->expr->left.sym, 10) &&
543 val <= sym_get_range_val(prop->expr->right.sym, 10);
545 if (!sym_string_valid(sym, str))
547 prop = sym_get_range_prop(sym);
550 val = strtol(str, NULL, 16);
551 return val >= sym_get_range_val(prop->expr->left.sym, 16) &&
552 val <= sym_get_range_val(prop->expr->right.sym, 16);
557 return sym_tristate_within_range(sym, yes);
559 return sym_tristate_within_range(sym, mod);
561 return sym_tristate_within_range(sym, no);
569 bool sym_set_string_value(struct symbol *sym, const char *newval)
580 return sym_set_tristate_value(sym, yes);
582 return sym_set_tristate_value(sym, mod);
584 return sym_set_tristate_value(sym, no);
591 if (!sym_string_within_range(sym, newval))
594 if (!(sym->flags & SYMBOL_DEF_USER)) {
595 sym->flags |= SYMBOL_DEF_USER;
596 sym_set_changed(sym);
599 oldval = sym->def[S_DEF_USER].val;
600 size = strlen(newval) + 1;
601 if (sym->type == S_HEX && (newval[0] != '0' || (newval[1] != 'x' && newval[1] != 'X'))) {
603 sym->def[S_DEF_USER].val = val = malloc(size);
606 } else if (!oldval || strcmp(oldval, newval))
607 sym->def[S_DEF_USER].val = val = malloc(size);
612 free((void *)oldval);
613 sym_clear_all_valid();
618 const char *sym_get_string_value(struct symbol *sym)
625 val = sym_get_tristate_value(sym);
638 return (const char *)sym->curr.val;
641 bool sym_is_changable(struct symbol *sym)
643 return sym->visible > sym->rev_dep.tri;
646 struct symbol *sym_lookup(const char *name, int isconst)
648 struct symbol *symbol;
654 if (name[0] && !name[1]) {
656 case 'y': return &symbol_yes;
657 case 'm': return &symbol_mod;
658 case 'n': return &symbol_no;
661 for (ptr = name; *ptr; ptr++)
665 for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
666 if (!strcmp(symbol->name, name)) {
667 if ((isconst && symbol->flags & SYMBOL_CONST) ||
668 (!isconst && !(symbol->flags & SYMBOL_CONST)))
672 new_name = strdup(name);
678 symbol = malloc(sizeof(*symbol));
679 memset(symbol, 0, sizeof(*symbol));
680 symbol->name = new_name;
681 symbol->type = S_UNKNOWN;
683 symbol->flags |= SYMBOL_CONST;
685 symbol->next = symbol_hash[hash];
686 symbol_hash[hash] = symbol;
691 struct symbol *sym_find(const char *name)
693 struct symbol *symbol = NULL;
700 if (name[0] && !name[1]) {
702 case 'y': return &symbol_yes;
703 case 'm': return &symbol_mod;
704 case 'n': return &symbol_no;
707 for (ptr = name; *ptr; ptr++)
711 for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
712 if (!strcmp(symbol->name, name) &&
713 !(symbol->flags & SYMBOL_CONST))
720 struct symbol **sym_re_search(const char *pattern)
722 struct symbol *sym, **sym_arr = NULL;
728 if (strlen(pattern) == 0)
730 if (regcomp(&re, pattern, REG_EXTENDED|REG_NOSUB|REG_ICASE))
733 for_all_symbols(i, sym) {
734 if (sym->flags & SYMBOL_CONST || !sym->name)
736 if (regexec(&re, sym->name, 0, NULL, 0))
738 if (cnt + 1 >= size) {
741 sym_arr = realloc(sym_arr, size * sizeof(struct symbol *));
747 sym_arr[cnt++] = sym;
757 struct symbol *sym_check_deps(struct symbol *sym);
759 static struct symbol *sym_check_expr_deps(struct expr *e)
768 sym = sym_check_expr_deps(e->left.expr);
771 return sym_check_expr_deps(e->right.expr);
773 return sym_check_expr_deps(e->left.expr);
776 sym = sym_check_deps(e->left.sym);
779 return sym_check_deps(e->right.sym);
781 return sym_check_deps(e->left.sym);
785 printf("Oops! How to check %d?\n", e->type);
789 /* return NULL when dependencies are OK */
790 struct symbol *sym_check_deps(struct symbol *sym)
793 struct property *prop;
795 if (sym->flags & SYMBOL_CHECK) {
796 fprintf(stderr, "%s:%d:error: found recursive dependency: %s",
797 sym->prop->file->name, sym->prop->lineno, sym->name);
800 if (sym->flags & SYMBOL_CHECKED)
803 sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);
804 sym2 = sym_check_expr_deps(sym->rev_dep.expr);
808 for (prop = sym->prop; prop; prop = prop->next) {
809 if (prop->type == P_CHOICE || prop->type == P_SELECT)
811 sym2 = sym_check_expr_deps(prop->visible.expr);
814 if (prop->type != P_DEFAULT || sym_is_choice(sym))
816 sym2 = sym_check_expr_deps(prop->expr);
822 fprintf(stderr, " -> %s%s", sym->name, sym2 == sym? "\n": "");
823 sym->flags &= ~SYMBOL_CHECK;
827 struct property *prop_alloc(enum prop_type type, struct symbol *sym)
829 struct property *prop;
830 struct property **propp;
832 prop = malloc(sizeof(*prop));
833 memset(prop, 0, sizeof(*prop));
836 prop->file = current_file;
837 prop->lineno = zconf_lineno();
839 /* append property to the prop list of symbol */
841 for (propp = &sym->prop; *propp; propp = &(*propp)->next)
849 struct symbol *prop_get_symbol(struct property *prop)
851 if (prop->expr && (prop->expr->type == E_SYMBOL ||
852 prop->expr->type == E_LIST))
853 return prop->expr->left.sym;
857 const char *prop_get_type_name(enum prop_type type)
882 void prop_add_env(const char *env)
884 struct symbol *sym, *sym2;
885 struct property *prop;
888 sym = current_entry->sym;
889 sym->flags |= SYMBOL_AUTO;
890 for_all_properties(sym, prop, P_ENV) {
891 sym2 = prop_get_symbol(prop);
892 if (strcmp(sym2->name, env))
893 menu_warn(current_entry, "redefining environment symbol from %s",
898 prop = prop_alloc(P_ENV, sym);
899 prop->expr = expr_alloc_symbol(sym_lookup(env, 1));
901 sym_env_list = expr_alloc_one(E_LIST, sym_env_list);
902 sym_env_list->right.sym = sym;
906 sym_add_default(sym, p);
908 menu_warn(current_entry, "environment variable %s undefined", env);