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 void sym_add_default(struct symbol *sym, const char *def)
39 struct property *prop = prop_alloc(P_DEFAULT, sym);
41 prop->expr = expr_alloc_symbol(sym_lookup(def, 1));
49 static bool inited = false;
58 sym = sym_lookup("ARCH", 0);
60 sym->flags |= SYMBOL_AUTO;
63 sym_add_default(sym, p);
65 sym = sym_lookup("DISTVERSION", 0);
67 sym->flags |= SYMBOL_AUTO;
68 p = getenv("DISTVERSION");
70 sym_add_default(sym, p);
72 sym = sym_lookup("UNAME_RELEASE", 0);
74 sym->flags |= SYMBOL_AUTO;
75 sym_add_default(sym, uts.release);
79 enum symbol_type sym_get_type(struct symbol *sym)
81 enum symbol_type type = sym->type;
83 if (type == S_TRISTATE) {
84 if (sym_is_choice_value(sym) && sym->visible == yes)
86 else if (modules_val == no)
92 const char *sym_type_name(enum symbol_type type)
113 struct property *sym_get_choice_prop(struct symbol *sym)
115 struct property *prop;
117 for_all_choices(sym, prop)
122 struct property *sym_get_default_prop(struct symbol *sym)
124 struct property *prop;
126 for_all_defaults(sym, prop) {
127 prop->visible.tri = expr_calc_value(prop->visible.expr);
128 if (prop->visible.tri != no)
134 struct property *sym_get_range_prop(struct symbol *sym)
136 struct property *prop;
138 for_all_properties(sym, prop, P_RANGE) {
139 prop->visible.tri = expr_calc_value(prop->visible.expr);
140 if (prop->visible.tri != no)
146 static int sym_get_range_val(struct symbol *sym, int base)
159 return strtol(sym->curr.val, NULL, base);
162 static void sym_validate_range(struct symbol *sym)
164 struct property *prop;
178 prop = sym_get_range_prop(sym);
181 val = strtol(sym->curr.val, NULL, base);
182 val2 = sym_get_range_val(prop->expr->left.sym, base);
184 val2 = sym_get_range_val(prop->expr->right.sym, base);
188 if (sym->type == S_INT)
189 sprintf(str, "%d", val2);
191 sprintf(str, "0x%x", val2);
192 sym->curr.val = strdup(str);
195 static void sym_calc_visibility(struct symbol *sym)
197 struct property *prop;
200 /* any prompt visible? */
202 for_all_prompts(sym, prop) {
203 prop->visible.tri = expr_calc_value(prop->visible.expr);
204 tri = E_OR(tri, prop->visible.tri);
206 if (tri == mod && (sym->type != S_TRISTATE || modules_val == no))
208 if (sym->visible != tri) {
210 sym_set_changed(sym);
212 if (sym_is_choice_value(sym))
215 if (sym->rev_dep.expr)
216 tri = expr_calc_value(sym->rev_dep.expr);
217 if (tri == mod && sym_get_type(sym) == S_BOOLEAN)
219 if (sym->rev_dep.tri != tri) {
220 sym->rev_dep.tri = tri;
221 sym_set_changed(sym);
225 static struct symbol *sym_calc_choice(struct symbol *sym)
227 struct symbol *def_sym;
228 struct property *prop;
231 /* is the user choice visible? */
232 def_sym = sym->def[S_DEF_USER].val;
234 sym_calc_visibility(def_sym);
235 if (def_sym->visible != no)
239 /* any of the defaults visible? */
240 for_all_defaults(sym, prop) {
241 prop->visible.tri = expr_calc_value(prop->visible.expr);
242 if (prop->visible.tri == no)
244 def_sym = prop_get_symbol(prop);
245 sym_calc_visibility(def_sym);
246 if (def_sym->visible != no)
250 /* just get the first visible value */
251 prop = sym_get_choice_prop(sym);
252 for (e = prop->expr; e; e = e->left.expr) {
253 def_sym = e->right.sym;
254 sym_calc_visibility(def_sym);
255 if (def_sym->visible != no)
259 /* no choice? reset tristate value */
264 void sym_calc_value(struct symbol *sym)
266 struct symbol_value newval, oldval;
267 struct property *prop;
273 if (sym->flags & SYMBOL_VALID)
275 sym->flags |= SYMBOL_VALID;
283 newval = symbol_empty.curr;
287 newval = symbol_no.curr;
290 sym->curr.val = sym->name;
294 if (!sym_is_choice_value(sym))
295 sym->flags &= ~SYMBOL_WRITE;
297 sym_calc_visibility(sym);
299 /* set default if recursively called */
302 switch (sym_get_type(sym)) {
305 if (sym_is_choice_value(sym) && sym->visible == yes) {
306 prop = sym_get_choice_prop(sym);
307 newval.tri = (prop_get_symbol(prop)->curr.val == sym) ? yes : no;
308 } else if (E_OR(sym->visible, sym->rev_dep.tri) != no) {
309 sym->flags |= SYMBOL_WRITE;
310 if (sym_has_value(sym))
311 newval.tri = sym->def[S_DEF_USER].tri;
312 else if (!sym_is_choice(sym)) {
313 prop = sym_get_default_prop(sym);
315 newval.tri = expr_calc_value(prop->expr);
317 newval.tri = E_OR(E_AND(newval.tri, sym->visible), sym->rev_dep.tri);
318 } else if (!sym_is_choice(sym)) {
319 prop = sym_get_default_prop(sym);
321 sym->flags |= SYMBOL_WRITE;
322 newval.tri = expr_calc_value(prop->expr);
325 if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN)
331 if (sym->visible != no) {
332 sym->flags |= SYMBOL_WRITE;
333 if (sym_has_value(sym)) {
334 newval.val = sym->def[S_DEF_USER].val;
338 prop = sym_get_default_prop(sym);
340 struct symbol *ds = prop_get_symbol(prop);
342 sym->flags |= SYMBOL_WRITE;
344 newval.val = ds->curr.val;
353 if (sym_is_choice(sym) && newval.tri == yes)
354 sym->curr.val = sym_calc_choice(sym);
355 sym_validate_range(sym);
357 if (memcmp(&oldval, &sym->curr, sizeof(oldval))) {
358 sym_set_changed(sym);
359 if (modules_sym == sym) {
360 sym_set_all_changed();
361 modules_val = modules_sym->curr.tri;
365 if (sym_is_choice(sym)) {
366 int flags = sym->flags & (SYMBOL_CHANGED | SYMBOL_WRITE);
367 prop = sym_get_choice_prop(sym);
368 for (e = prop->expr; e; e = e->left.expr) {
369 e->right.sym->flags |= flags;
370 if (flags & SYMBOL_CHANGED)
371 sym_set_changed(e->right.sym);
376 void sym_clear_all_valid(void)
381 for_all_symbols(i, sym)
382 sym->flags &= ~SYMBOL_VALID;
383 sym_add_change_count(1);
385 sym_calc_value(modules_sym);
388 void sym_set_changed(struct symbol *sym)
390 struct property *prop;
392 sym->flags |= SYMBOL_CHANGED;
393 for (prop = sym->prop; prop; prop = prop->next) {
395 prop->menu->flags |= MENU_CHANGED;
399 void sym_set_all_changed(void)
404 for_all_symbols(i, sym)
405 sym_set_changed(sym);
408 bool sym_tristate_within_range(struct symbol *sym, tristate val)
410 int type = sym_get_type(sym);
412 if (sym->visible == no)
415 if (type != S_BOOLEAN && type != S_TRISTATE)
418 if (type == S_BOOLEAN && val == mod)
420 if (sym->visible <= sym->rev_dep.tri)
422 if (sym_is_choice_value(sym) && sym->visible == yes)
424 return val >= sym->rev_dep.tri && val <= sym->visible;
427 bool sym_set_tristate_value(struct symbol *sym, tristate val)
429 tristate oldval = sym_get_tristate_value(sym);
431 if (oldval != val && !sym_tristate_within_range(sym, val))
434 if (!(sym->flags & SYMBOL_DEF_USER)) {
435 sym->flags |= SYMBOL_DEF_USER;
436 sym_set_changed(sym);
439 * setting a choice value also resets the new flag of the choice
440 * symbol and all other choice values.
442 if (sym_is_choice_value(sym) && val == yes) {
443 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
444 struct property *prop;
447 cs->def[S_DEF_USER].val = sym;
448 cs->flags |= SYMBOL_DEF_USER;
449 prop = sym_get_choice_prop(cs);
450 for (e = prop->expr; e; e = e->left.expr) {
451 if (e->right.sym->visible != no)
452 e->right.sym->flags |= SYMBOL_DEF_USER;
456 sym->def[S_DEF_USER].tri = val;
458 sym_clear_all_valid();
463 tristate sym_toggle_tristate_value(struct symbol *sym)
465 tristate oldval, newval;
467 oldval = newval = sym_get_tristate_value(sym);
480 if (sym_set_tristate_value(sym, newval))
482 } while (oldval != newval);
486 bool sym_string_valid(struct symbol *sym, const char *str)
499 if (ch == '0' && *str != 0)
501 while ((ch = *str++)) {
507 if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))
513 } while ((ch = *str++));
529 bool sym_string_within_range(struct symbol *sym, const char *str)
531 struct property *prop;
536 return sym_string_valid(sym, str);
538 if (!sym_string_valid(sym, str))
540 prop = sym_get_range_prop(sym);
543 val = strtol(str, NULL, 10);
544 return val >= sym_get_range_val(prop->expr->left.sym, 10) &&
545 val <= sym_get_range_val(prop->expr->right.sym, 10);
547 if (!sym_string_valid(sym, str))
549 prop = sym_get_range_prop(sym);
552 val = strtol(str, NULL, 16);
553 return val >= sym_get_range_val(prop->expr->left.sym, 16) &&
554 val <= sym_get_range_val(prop->expr->right.sym, 16);
559 return sym_tristate_within_range(sym, yes);
561 return sym_tristate_within_range(sym, mod);
563 return sym_tristate_within_range(sym, no);
571 bool sym_set_string_value(struct symbol *sym, const char *newval)
582 return sym_set_tristate_value(sym, yes);
584 return sym_set_tristate_value(sym, mod);
586 return sym_set_tristate_value(sym, no);
593 if (!sym_string_within_range(sym, newval))
596 if (!(sym->flags & SYMBOL_DEF_USER)) {
597 sym->flags |= SYMBOL_DEF_USER;
598 sym_set_changed(sym);
601 oldval = sym->def[S_DEF_USER].val;
602 size = strlen(newval) + 1;
603 if (sym->type == S_HEX && (newval[0] != '0' || (newval[1] != 'x' && newval[1] != 'X'))) {
605 sym->def[S_DEF_USER].val = val = malloc(size);
608 } else if (!oldval || strcmp(oldval, newval))
609 sym->def[S_DEF_USER].val = val = malloc(size);
614 free((void *)oldval);
615 sym_clear_all_valid();
620 const char *sym_get_string_value(struct symbol *sym)
627 val = sym_get_tristate_value(sym);
640 return (const char *)sym->curr.val;
643 bool sym_is_changable(struct symbol *sym)
645 return sym->visible > sym->rev_dep.tri;
648 struct symbol *sym_lookup(const char *name, int isconst)
650 struct symbol *symbol;
656 if (name[0] && !name[1]) {
658 case 'y': return &symbol_yes;
659 case 'm': return &symbol_mod;
660 case 'n': return &symbol_no;
663 for (ptr = name; *ptr; ptr++)
667 for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
668 if (!strcmp(symbol->name, name)) {
669 if ((isconst && symbol->flags & SYMBOL_CONST) ||
670 (!isconst && !(symbol->flags & SYMBOL_CONST)))
674 new_name = strdup(name);
680 symbol = malloc(sizeof(*symbol));
681 memset(symbol, 0, sizeof(*symbol));
682 symbol->name = new_name;
683 symbol->type = S_UNKNOWN;
685 symbol->flags |= SYMBOL_CONST;
687 symbol->next = symbol_hash[hash];
688 symbol_hash[hash] = symbol;
693 struct symbol *sym_find(const char *name)
695 struct symbol *symbol = NULL;
702 if (name[0] && !name[1]) {
704 case 'y': return &symbol_yes;
705 case 'm': return &symbol_mod;
706 case 'n': return &symbol_no;
709 for (ptr = name; *ptr; ptr++)
713 for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
714 if (!strcmp(symbol->name, name) &&
715 !(symbol->flags & SYMBOL_CONST))
722 struct symbol **sym_re_search(const char *pattern)
724 struct symbol *sym, **sym_arr = NULL;
730 if (strlen(pattern) == 0)
732 if (regcomp(&re, pattern, REG_EXTENDED|REG_NOSUB|REG_ICASE))
735 for_all_symbols(i, sym) {
736 if (sym->flags & SYMBOL_CONST || !sym->name)
738 if (regexec(&re, sym->name, 0, NULL, 0))
740 if (cnt + 1 >= size) {
743 sym_arr = realloc(sym_arr, size * sizeof(struct symbol *));
749 sym_arr[cnt++] = sym;
759 struct symbol *sym_check_deps(struct symbol *sym);
761 static struct symbol *sym_check_expr_deps(struct expr *e)
770 sym = sym_check_expr_deps(e->left.expr);
773 return sym_check_expr_deps(e->right.expr);
775 return sym_check_expr_deps(e->left.expr);
778 sym = sym_check_deps(e->left.sym);
781 return sym_check_deps(e->right.sym);
783 return sym_check_deps(e->left.sym);
787 printf("Oops! How to check %d?\n", e->type);
791 struct symbol *sym_check_deps(struct symbol *sym)
794 struct property *prop;
796 if (sym->flags & SYMBOL_CHECK) {
797 printf("Warning! Found recursive dependency: %s", 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 printf(" %s", sym->name);
828 sym->flags &= ~SYMBOL_CHECK;
832 struct property *prop_alloc(enum prop_type type, struct symbol *sym)
834 struct property *prop;
835 struct property **propp;
837 prop = malloc(sizeof(*prop));
838 memset(prop, 0, sizeof(*prop));
841 prop->file = current_file;
842 prop->lineno = zconf_lineno();
844 /* append property to the prop list of symbol */
846 for (propp = &sym->prop; *propp; propp = &(*propp)->next)
854 struct symbol *prop_get_symbol(struct property *prop)
856 if (prop->expr && (prop->expr->type == E_SYMBOL ||
857 prop->expr->type == E_CHOICE))
858 return prop->expr->left.sym;
862 const char *prop_get_type_name(enum prop_type type)