[deliverable/linux.git] / scripts / kconfig / menu.c

/*
 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
 * Released under the terms of the GNU GPL v2.0.
 */

#include <stdlib.h>
#include <string.h>

#define LKC_DIRECT_LINK
#include "lkc.h"

static const char nohelp_text[] = N_(
	"There is no help available for this option.\n");

struct menu rootmenu;
static struct menu **last_entry_ptr;

struct file *file_list;
struct file *current_file;

void menu_warn(struct menu *menu, const char *fmt, ...)
{
	va_list ap;
	va_start(ap, fmt);
	fprintf(stderr, "%s:%d:warning: ", menu->file->name, menu->lineno);
	vfprintf(stderr, fmt, ap);
	fprintf(stderr, "\n");
	va_end(ap);
}

static void prop_warn(struct property *prop, const char *fmt, ...)
{
	va_list ap;
	va_start(ap, fmt);
	fprintf(stderr, "%s:%d:warning: ", prop->file->name, prop->lineno);
	vfprintf(stderr, fmt, ap);
	fprintf(stderr, "\n");
	va_end(ap);
}

void _menu_init(void)
{
	current_entry = current_menu = &rootmenu;
	last_entry_ptr = &rootmenu.list;
}

void menu_add_entry(struct symbol *sym)
{
	struct menu *menu;

	menu = malloc(sizeof(*menu));
	memset(menu, 0, sizeof(*menu));
	menu->sym = sym;
	menu->parent = current_menu;
	menu->file = current_file;
	menu->lineno = zconf_lineno();

	*last_entry_ptr = menu;
	last_entry_ptr = &menu->next;
	current_entry = menu;
	if (sym)
		menu_add_symbol(P_SYMBOL, sym, NULL);
}

void menu_end_entry(void)
{
}

struct menu *menu_add_menu(void)
{
	menu_end_entry();
	last_entry_ptr = &current_entry->list;
	return current_menu = current_entry;
}

void menu_end_menu(void)
{
	last_entry_ptr = &current_menu->next;
	current_menu = current_menu->parent;
}

static struct expr *menu_check_dep(struct expr *e)
{
	if (!e)
		return e;

	switch (e->type) {
	case E_NOT:
		e->left.expr = menu_check_dep(e->left.expr);
		break;
	case E_OR:
	case E_AND:
		e->left.expr = menu_check_dep(e->left.expr);
		e->right.expr = menu_check_dep(e->right.expr);
		break;
	case E_SYMBOL:
		/* change 'm' into 'm' && MODULES */
		if (e->left.sym == &symbol_mod)
			return expr_alloc_and(e, expr_alloc_symbol(modules_sym));
		break;
	default:
		break;
	}
	return e;
}

void menu_add_dep(struct expr *dep)
{
	current_entry->dep = expr_alloc_and(current_entry->dep, menu_check_dep(dep));
}

void menu_set_type(int type)
{
	struct symbol *sym = current_entry->sym;

	if (sym->type == type)
		return;
	if (sym->type == S_UNKNOWN) {
		sym->type = type;
		return;
	}
	menu_warn(current_entry, "type of '%s' redefined from '%s' to '%s'",
	    sym->name ? sym->name : "<choice>",
	    sym_type_name(sym->type), sym_type_name(type));
}

struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep)
{
	struct property *prop = prop_alloc(type, current_entry->sym);

	prop->menu = current_entry;
	prop->expr = expr;
	prop->visible.expr = menu_check_dep(dep);

	if (prompt) {
		if (isspace(*prompt)) {
			prop_warn(prop, "leading whitespace ignored");
			while (isspace(*prompt))
				prompt++;
		}
		if (current_entry->prompt && current_entry != &rootmenu)
			prop_warn(prop, "prompt redefined");

		/* Apply all upper menus' visibilities to actual prompts. */
		if(type == P_PROMPT) {
			struct menu *menu = current_entry;

			while ((menu = menu->parent) != NULL) {
				if (!menu->visibility)
					continue;
				prop->visible.expr
					= expr_alloc_and(prop->visible.expr,
							 menu->visibility);
			}
		}

		current_entry->prompt = prop;
	}
	prop->text = prompt;

	return prop;
}

struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
{
	return menu_add_prop(type, prompt, NULL, dep);
}

void menu_add_visibility(struct expr *expr)
{
	current_entry->visibility = expr_alloc_and(current_entry->visibility,
	    expr);
}

void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
{
	menu_add_prop(type, NULL, expr, dep);
}

void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
{
	menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
}

void menu_add_option(int token, char *arg)
{
	struct property *prop;

	switch (token) {
	case T_OPT_MODULES:
		prop = prop_alloc(P_DEFAULT, modules_sym);
		prop->expr = expr_alloc_symbol(current_entry->sym);
		break;
	case T_OPT_DEFCONFIG_LIST:
		if (!sym_defconfig_list)
			sym_defconfig_list = current_entry->sym;
		else if (sym_defconfig_list != current_entry->sym)
			zconf_error("trying to redefine defconfig symbol");
		break;
	case T_OPT_ENV:
		prop_add_env(arg);
		break;
	}
}

static int menu_range_valid_sym(struct symbol *sym, struct symbol *sym2)
{
	return sym2->type == S_INT || sym2->type == S_HEX ||
	       (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
}

static void sym_check_prop(struct symbol *sym)
{
	struct property *prop;
	struct symbol *sym2;
	for (prop = sym->prop; prop; prop = prop->next) {
		switch (prop->type) {
		case P_DEFAULT:
			if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
			    prop->expr->type != E_SYMBOL)
				prop_warn(prop,
				    "default for config symbol '%s'"
				    " must be a single symbol", sym->name);
			break;
		case P_SELECT:
			sym2 = prop_get_symbol(prop);
			if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
				prop_warn(prop,
				    "config symbol '%s' uses select, but is "
				    "not boolean or tristate", sym->name);
			else if (sym2->type != S_UNKNOWN &&
			         sym2->type != S_BOOLEAN &&
			         sym2->type != S_TRISTATE)
				prop_warn(prop,
				    "'%s' has wrong type. 'select' only "
				    "accept arguments of boolean and "
				    "tristate type", sym2->name);
			break;
		case P_RANGE:
			if (sym->type != S_INT && sym->type != S_HEX)
				prop_warn(prop, "range is only allowed "
				                "for int or hex symbols");
			if (!menu_range_valid_sym(sym, prop->expr->left.sym) ||
			    !menu_range_valid_sym(sym, prop->expr->right.sym))
				prop_warn(prop, "range is invalid");
			break;
		default:
			;
		}
	}
}

void menu_finalize(struct menu *parent)
{
	struct menu *menu, *last_menu;
	struct symbol *sym;
	struct property *prop;
	struct expr *parentdep, *basedep, *dep, *dep2, **ep;

	sym = parent->sym;
	if (parent->list) {
		if (sym && sym_is_choice(sym)) {
			if (sym->type == S_UNKNOWN) {
				/* find the first choice value to find out choice type */
				current_entry = parent;
				for (menu = parent->list; menu; menu = menu->next) {
					if (menu->sym && menu->sym->type != S_UNKNOWN) {
						menu_set_type(menu->sym->type);
						break;
					}
				}
			}
			/* set the type of the remaining choice values */
			for (menu = parent->list; menu; menu = menu->next) {
				current_entry = menu;
				if (menu->sym && menu->sym->type == S_UNKNOWN)
					menu_set_type(sym->type);
			}
			parentdep = expr_alloc_symbol(sym);
		} else if (parent->prompt)
			parentdep = parent->prompt->visible.expr;
		else
			parentdep = parent->dep;

		for (menu = parent->list; menu; menu = menu->next) {
			basedep = expr_transform(menu->dep);
			basedep = expr_alloc_and(expr_copy(parentdep), basedep);
			basedep = expr_eliminate_dups(basedep);
			menu->dep = basedep;
			if (menu->sym)
				prop = menu->sym->prop;
			else
				prop = menu->prompt;
			for (; prop; prop = prop->next) {
				if (prop->menu != menu)
					continue;
				dep = expr_transform(prop->visible.expr);
				dep = expr_alloc_and(expr_copy(basedep), dep);
				dep = expr_eliminate_dups(dep);
				if (menu->sym && menu->sym->type != S_TRISTATE)
					dep = expr_trans_bool(dep);
				prop->visible.expr = dep;
				if (prop->type == P_SELECT) {
					struct symbol *es = prop_get_symbol(prop);
					es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
							expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
				}
			}
		}
		for (menu = parent->list; menu; menu = menu->next)
			menu_finalize(menu);
	} else if (sym) {
		basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
		basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
		basedep = expr_eliminate_dups(expr_transform(basedep));
		last_menu = NULL;
		for (menu = parent->next; menu; menu = menu->next) {
			dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
			if (!expr_contains_symbol(dep, sym))
				break;
			if (expr_depends_symbol(dep, sym))
				goto next;
			dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
			dep = expr_eliminate_dups(expr_transform(dep));
			dep2 = expr_copy(basedep);
			expr_eliminate_eq(&dep, &dep2);
			expr_free(dep);
			if (!expr_is_yes(dep2)) {
				expr_free(dep2);
				break;
			}
			expr_free(dep2);
		next:
			menu_finalize(menu);
			menu->parent = parent;
			last_menu = menu;
		}
		if (last_menu) {
			parent->list = parent->next;
			parent->next = last_menu->next;
			last_menu->next = NULL;
		}

		sym->dir_dep.expr = parent->dep;
	}
	for (menu = parent->list; menu; menu = menu->next) {
		if (sym && sym_is_choice(sym) &&
		    menu->sym && !sym_is_choice_value(menu->sym)) {
			current_entry = menu;
			menu->sym->flags |= SYMBOL_CHOICEVAL;
			if (!menu->prompt)
				menu_warn(menu, "choice value must have a prompt");
			for (prop = menu->sym->prop; prop; prop = prop->next) {
				if (prop->type == P_DEFAULT)
					prop_warn(prop, "defaults for choice "
						  "values not supported");
				if (prop->menu == menu)
					continue;
				if (prop->type == P_PROMPT &&
				    prop->menu->parent->sym != sym)
					prop_warn(prop, "choice value used outside its choice group");
			}
			/* Non-tristate choice values of tristate choices must
			 * depend on the choice being set to Y. The choice
			 * values' dependencies were propagated to their
			 * properties above, so the change here must be re-
			 * propagated.
			 */
			if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
				basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
				menu->dep = expr_alloc_and(basedep, menu->dep);
				for (prop = menu->sym->prop; prop; prop = prop->next) {
					if (prop->menu != menu)
						continue;
					prop->visible.expr = expr_alloc_and(expr_copy(basedep),
									    prop->visible.expr);
				}
			}
			menu_add_symbol(P_CHOICE, sym, NULL);
			prop = sym_get_choice_prop(sym);
			for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
				;
			*ep = expr_alloc_one(E_LIST, NULL);
			(*ep)->right.sym = menu->sym;
		}
		if (menu->list && (!menu->prompt || !menu->prompt->text)) {
			for (last_menu = menu->list; ; last_menu = last_menu->next) {
				last_menu->parent = parent;
				if (!last_menu->next)
					break;
			}
			last_menu->next = menu->next;
			menu->next = menu->list;
			menu->list = NULL;
		}
	}

	if (sym && !(sym->flags & SYMBOL_WARNED)) {
		if (sym->type == S_UNKNOWN)
			menu_warn(parent, "config symbol defined without type");

		if (sym_is_choice(sym) && !parent->prompt)
			menu_warn(parent, "choice must have a prompt");

		/* Check properties connected to this symbol */
		sym_check_prop(sym);
		sym->flags |= SYMBOL_WARNED;
	}

	if (sym && !sym_is_optional(sym) && parent->prompt) {
		sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
				expr_alloc_and(parent->prompt->visible.expr,
					expr_alloc_symbol(&symbol_mod)));
	}
}

bool menu_has_prompt(struct menu *menu)
{
	if (!menu->prompt)
		return false;
	return true;
}

bool menu_is_visible(struct menu *menu)
{
	struct menu *child;
	struct symbol *sym;
	tristate visible;

	if (!menu->prompt)
		return false;

	if (menu->visibility) {
		if (expr_calc_value(menu->visibility) == no)
			return no;
	}

	sym = menu->sym;
	if (sym) {
		sym_calc_value(sym);
		visible = menu->prompt->visible.tri;
	} else
		visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);

	if (visible != no)
		return true;

	if (!sym || sym_get_tristate_value(menu->sym) == no)
		return false;

	for (child = menu->list; child; child = child->next) {
		if (menu_is_visible(child)) {
			if (sym)
				sym->flags |= SYMBOL_DEF_USER;
			return true;
		}
	}

	return false;
}

const char *menu_get_prompt(struct menu *menu)
{
	if (menu->prompt)
		return menu->prompt->text;
	else if (menu->sym)
		return menu->sym->name;
	return NULL;
}

struct menu *menu_get_root_menu(struct menu *menu)
{
	return &rootmenu;
}

struct menu *menu_get_parent_menu(struct menu *menu)
{
	enum prop_type type;

	for (; menu != &rootmenu; menu = menu->parent) {
		type = menu->prompt ? menu->prompt->type : 0;
		if (type == P_MENU)
			break;
	}
	return menu;
}

bool menu_has_help(struct menu *menu)
{
	return menu->help != NULL;
}

const char *menu_get_help(struct menu *menu)
{
	if (menu->help)
		return menu->help;
	else
		return "";
}

static void get_prompt_str(struct gstr *r, struct property *prop)
{
	int i, j;
	struct menu *submenu[8], *menu;

	str_printf(r, _("Prompt: %s\n"), _(prop->text));
	str_printf(r, _("  Defined at %s:%d\n"), prop->menu->file->name,
		prop->menu->lineno);
	if (!expr_is_yes(prop->visible.expr)) {
		str_append(r, _("  Depends on: "));
		expr_gstr_print(prop->visible.expr, r);
		str_append(r, "\n");
	}
	menu = prop->menu->parent;
	for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent)
		submenu[i++] = menu;
	if (i > 0) {
		str_printf(r, _("  Location:\n"));
		for (j = 4; --i >= 0; j += 2) {
			menu = submenu[i];
			str_printf(r, "%*c-> %s", j, ' ', _(menu_get_prompt(menu)));
			if (menu->sym) {
				str_printf(r, " (%s [=%s])", menu->sym->name ?
					menu->sym->name : _("<choice>"),
					sym_get_string_value(menu->sym));
			}
			str_append(r, "\n");
		}
	}
}

void get_symbol_str(struct gstr *r, struct symbol *sym)
{
	bool hit;
	struct property *prop;

	if (sym && sym->name) {
		str_printf(r, "Symbol: %s [=%s]\n", sym->name,
			   sym_get_string_value(sym));
		str_printf(r, "Type  : %s\n", sym_type_name(sym->type));
		if (sym->type == S_INT || sym->type == S_HEX) {
			prop = sym_get_range_prop(sym);
			if (prop) {
				str_printf(r, "Range : ");
				expr_gstr_print(prop->expr, r);
				str_append(r, "\n");
			}
		}
	}
	for_all_prompts(sym, prop)
		get_prompt_str(r, prop);
	hit = false;
	for_all_properties(sym, prop, P_SELECT) {
		if (!hit) {
			str_append(r, "  Selects: ");
			hit = true;
		} else
			str_printf(r, " && ");
		expr_gstr_print(prop->expr, r);
	}
	if (hit)
		str_append(r, "\n");
	if (sym->rev_dep.expr) {
		str_append(r, _("  Selected by: "));
		expr_gstr_print(sym->rev_dep.expr, r);
		str_append(r, "\n");
	}
	str_append(r, "\n\n");
}

struct gstr get_relations_str(struct symbol **sym_arr)
{
	struct symbol *sym;
	struct gstr res = str_new();
	int i;

	for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
		get_symbol_str(&res, sym);
	if (!i)
		str_append(&res, _("No matches found.\n"));
	return res;
}


void menu_get_ext_help(struct menu *menu, struct gstr *help)
{
	struct symbol *sym = menu->sym;

	if (menu_has_help(menu)) {
		if (sym->name) {
			str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
			str_append(help, _(menu_get_help(menu)));
			str_append(help, "\n");
		}
	} else {
		str_append(help, nohelp_text);
	}
	if (sym)
		get_symbol_str(help, sym);
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
	3	* Released under the terms of the GNU GPL v2.0.
	4	*/
	5
	6	#include <stdlib.h>
	7	#include <string.h>
	8
	9	#define LKC_DIRECT_LINK
	10	#include "lkc.h"
	11
6bd5999d	12	static const char nohelp_text[] = N_(
652cf982	13	"There is no help available for this option.\n");
6bd5999d	14
1da177e4 LT	15	struct menu rootmenu;
	16	static struct menu **last_entry_ptr;
	17
	18	struct file *file_list;
	19	struct file *current_file;
	20
93449082	21	void menu_warn(struct menu menu, const char fmt, ...)
1da177e4 LT	22	{
	23	va_list ap;
	24	va_start(ap, fmt);
	25	fprintf(stderr, "%s:%d:warning: ", menu->file->name, menu->lineno);
	26	vfprintf(stderr, fmt, ap);
	27	fprintf(stderr, "\n");
	28	va_end(ap);
	29	}
	30
	31	static void prop_warn(struct property prop, const char fmt, ...)
	32	{
	33	va_list ap;
	34	va_start(ap, fmt);
	35	fprintf(stderr, "%s:%d:warning: ", prop->file->name, prop->lineno);
	36	vfprintf(stderr, fmt, ap);
	37	fprintf(stderr, "\n");
	38	va_end(ap);
	39	}
	40
692d97c3	41	void _menu_init(void)
1da177e4 LT	42	{
	43	current_entry = current_menu = &rootmenu;
	44	last_entry_ptr = &rootmenu.list;
	45	}
	46
	47	void menu_add_entry(struct symbol *sym)
	48	{
	49	struct menu *menu;
	50
	51	menu = malloc(sizeof(*menu));
	52	memset(menu, 0, sizeof(*menu));
	53	menu->sym = sym;
	54	menu->parent = current_menu;
	55	menu->file = current_file;
	56	menu->lineno = zconf_lineno();
	57
	58	*last_entry_ptr = menu;
	59	last_entry_ptr = &menu->next;
	60	current_entry = menu;
59e89e3d SR	61	if (sym)
59e89e3d SR	62	menu_add_symbol(P_SYMBOL, sym, NULL);
1da177e4 LT	63	}
	64
	65	void menu_end_entry(void)
	66	{
	67	}
	68
a02f0570	69	struct menu *menu_add_menu(void)
1da177e4	70	{
a02f0570	71	menu_end_entry();
1da177e4	72	last_entry_ptr = &current_entry->list;
a02f0570	73	return current_menu = current_entry;
1da177e4 LT	74	}
	75
	76	void menu_end_menu(void)
	77	{
	78	last_entry_ptr = &current_menu->next;
	79	current_menu = current_menu->parent;
	80	}
	81
4356f489	82	static struct expr menu_check_dep(struct expr e)
1da177e4 LT	83	{
	84	if (!e)
	85	return e;
	86
	87	switch (e->type) {
	88	case E_NOT:
	89	e->left.expr = menu_check_dep(e->left.expr);
	90	break;
	91	case E_OR:
	92	case E_AND:
	93	e->left.expr = menu_check_dep(e->left.expr);
	94	e->right.expr = menu_check_dep(e->right.expr);
	95	break;
	96	case E_SYMBOL:
	97	/* change 'm' into 'm' && MODULES */
	98	if (e->left.sym == &symbol_mod)
	99	return expr_alloc_and(e, expr_alloc_symbol(modules_sym));
	100	break;
	101	default:
	102	break;
	103	}
	104	return e;
	105	}
	106
	107	void menu_add_dep(struct expr *dep)
	108	{
	109	current_entry->dep = expr_alloc_and(current_entry->dep, menu_check_dep(dep));
	110	}
	111
	112	void menu_set_type(int type)
	113	{
	114	struct symbol *sym = current_entry->sym;
	115
	116	if (sym->type == type)
	117	return;
	118	if (sym->type == S_UNKNOWN) {
	119	sym->type = type;
	120	return;
	121	}
f001f7f8	122	menu_warn(current_entry, "type of '%s' redefined from '%s' to '%s'",
1da177e4 LT	123	sym->name ? sym->name : "<choice>",
	124	sym_type_name(sym->type), sym_type_name(type));
	125	}
	126
	127	struct property menu_add_prop(enum prop_type type, char prompt, struct expr expr, struct expr dep)
	128	{
	129	struct property *prop = prop_alloc(type, current_entry->sym);
	130
	131	prop->menu = current_entry;
1da177e4 LT	132	prop->expr = expr;
	133	prop->visible.expr = menu_check_dep(dep);
	134
	135	if (prompt) {
f001f7f8 RZ	136	if (isspace(*prompt)) {
	137	prop_warn(prop, "leading whitespace ignored");
	138	while (isspace(*prompt))
	139	prompt++;
	140	}
ba6ff60d	141	if (current_entry->prompt && current_entry != &rootmenu)
f001f7f8	142	prop_warn(prop, "prompt redefined");
7ad12278 JB	143
	144	/* Apply all upper menus' visibilities to actual prompts. */
	145	if(type == P_PROMPT) {
	146	struct menu *menu = current_entry;
	147
	148	while ((menu = menu->parent) != NULL) {
	149	if (!menu->visibility)
	150	continue;
	151	prop->visible.expr
	152	= expr_alloc_and(prop->visible.expr,
	153	menu->visibility);
	154	}
	155	}
	156
1da177e4 LT	157	current_entry->prompt = prop;
1da177e4 LT	158	}
f001f7f8	159	prop->text = prompt;
1da177e4 LT	160
	161	return prop;
	162	}
	163
fb7f6ff6	164	struct property menu_add_prompt(enum prop_type type, char prompt, struct expr *dep)
1da177e4	165	{
fb7f6ff6	166	return menu_add_prop(type, prompt, NULL, dep);
1da177e4 LT	167	}
1da177e4 LT	168
86e187ff AL	169	void menu_add_visibility(struct expr *expr)
	170	{
	171	current_entry->visibility = expr_alloc_and(current_entry->visibility,
	172	expr);
	173	}
	174
1da177e4 LT	175	void menu_add_expr(enum prop_type type, struct expr expr, struct expr dep)
	176	{
	177	menu_add_prop(type, NULL, expr, dep);
	178	}
	179
	180	void menu_add_symbol(enum prop_type type, struct symbol sym, struct expr dep)
	181	{
	182	menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
	183	}
	184
f6a88aa8 RZ	185	void menu_add_option(int token, char *arg)
f6a88aa8 RZ	186	{
face4374 RZ	187	struct property *prop;
	188
	189	switch (token) {
	190	case T_OPT_MODULES:
	191	prop = prop_alloc(P_DEFAULT, modules_sym);
	192	prop->expr = expr_alloc_symbol(current_entry->sym);
	193	break;
	194	case T_OPT_DEFCONFIG_LIST:
	195	if (!sym_defconfig_list)
	196	sym_defconfig_list = current_entry->sym;
	197	else if (sym_defconfig_list != current_entry->sym)
	198	zconf_error("trying to redefine defconfig symbol");
	199	break;
93449082 RZ	200	case T_OPT_ENV:
	201	prop_add_env(arg);
	202	break;
face4374	203	}
f6a88aa8 RZ	204	}
f6a88aa8 RZ	205
4cf3cbe2 RZ	206	static int menu_range_valid_sym(struct symbol sym, struct symbol sym2)
	207	{
	208	return sym2->type == S_INT \|\| sym2->type == S_HEX \|\|
	209	(sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
	210	}
	211
4356f489	212	static void sym_check_prop(struct symbol *sym)
1da177e4 LT	213	{
	214	struct property *prop;
	215	struct symbol *sym2;
	216	for (prop = sym->prop; prop; prop = prop->next) {
	217	switch (prop->type) {
	218	case P_DEFAULT:
	219	if ((sym->type == S_STRING \|\| sym->type == S_INT \|\| sym->type == S_HEX) &&
	220	prop->expr->type != E_SYMBOL)
	221	prop_warn(prop,
4280eae0	222	"default for config symbol '%s'"
1da177e4 LT	223	" must be a single symbol", sym->name);
	224	break;
	225	case P_SELECT:
	226	sym2 = prop_get_symbol(prop);
	227	if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
	228	prop_warn(prop,
	229	"config symbol '%s' uses select, but is "
	230	"not boolean or tristate", sym->name);
603d4988 SR	231	else if (sym2->type != S_UNKNOWN &&
	232	sym2->type != S_BOOLEAN &&
	233	sym2->type != S_TRISTATE)
1da177e4 LT	234	prop_warn(prop,
	235	"'%s' has wrong type. 'select' only "
	236	"accept arguments of boolean and "
	237	"tristate type", sym2->name);
	238	break;
	239	case P_RANGE:
	240	if (sym->type != S_INT && sym->type != S_HEX)
	241	prop_warn(prop, "range is only allowed "
	242	"for int or hex symbols");
4cf3cbe2 RZ	243	if (!menu_range_valid_sym(sym, prop->expr->left.sym) \|\|
4cf3cbe2 RZ	244	!menu_range_valid_sym(sym, prop->expr->right.sym))
1da177e4 LT	245	prop_warn(prop, "range is invalid");
	246	break;
	247	default:
	248	;
	249	}
	250	}
	251	}
	252
	253	void menu_finalize(struct menu *parent)
	254	{
	255	struct menu menu, last_menu;
	256	struct symbol *sym;
	257	struct property *prop;
	258	struct expr parentdep, basedep, dep, dep2, **ep;
	259
	260	sym = parent->sym;
	261	if (parent->list) {
	262	if (sym && sym_is_choice(sym)) {
5a1aa8a1 RZ	263	if (sym->type == S_UNKNOWN) {
	264	/* find the first choice value to find out choice type */
	265	current_entry = parent;
	266	for (menu = parent->list; menu; menu = menu->next) {
	267	if (menu->sym && menu->sym->type != S_UNKNOWN) {
f5eaa323	268	menu_set_type(menu->sym->type);
5a1aa8a1 RZ	269	break;
5a1aa8a1 RZ	270	}
1da177e4 LT	271	}
1da177e4 LT	272	}
5a1aa8a1 RZ	273	/* set the type of the remaining choice values */
	274	for (menu = parent->list; menu; menu = menu->next) {
	275	current_entry = menu;
	276	if (menu->sym && menu->sym->type == S_UNKNOWN)
	277	menu_set_type(sym->type);
	278	}
1da177e4 LT	279	parentdep = expr_alloc_symbol(sym);
	280	} else if (parent->prompt)
	281	parentdep = parent->prompt->visible.expr;
	282	else
	283	parentdep = parent->dep;
	284
	285	for (menu = parent->list; menu; menu = menu->next) {
	286	basedep = expr_transform(menu->dep);
e8b8c977	287	basedep = expr_alloc_and(expr_copy(parentdep), basedep);
1da177e4 LT	288	basedep = expr_eliminate_dups(basedep);
	289	menu->dep = basedep;
	290	if (menu->sym)
	291	prop = menu->sym->prop;
	292	else
	293	prop = menu->prompt;
	294	for (; prop; prop = prop->next) {
	295	if (prop->menu != menu)
	296	continue;
	297	dep = expr_transform(prop->visible.expr);
	298	dep = expr_alloc_and(expr_copy(basedep), dep);
	299	dep = expr_eliminate_dups(dep);
	300	if (menu->sym && menu->sym->type != S_TRISTATE)
	301	dep = expr_trans_bool(dep);
	302	prop->visible.expr = dep;
	303	if (prop->type == P_SELECT) {
	304	struct symbol *es = prop_get_symbol(prop);
	305	es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
	306	expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
	307	}
	308	}
	309	}
	310	for (menu = parent->list; menu; menu = menu->next)
	311	menu_finalize(menu);
	312	} else if (sym) {
	313	basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
	314	basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
	315	basedep = expr_eliminate_dups(expr_transform(basedep));
	316	last_menu = NULL;
	317	for (menu = parent->next; menu; menu = menu->next) {
	318	dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
	319	if (!expr_contains_symbol(dep, sym))
	320	break;
	321	if (expr_depends_symbol(dep, sym))
	322	goto next;
	323	dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
	324	dep = expr_eliminate_dups(expr_transform(dep));
	325	dep2 = expr_copy(basedep);
	326	expr_eliminate_eq(&dep, &dep2);
	327	expr_free(dep);
	328	if (!expr_is_yes(dep2)) {
	329	expr_free(dep2);
	330	break;
	331	}
	332	expr_free(dep2);
	333	next:
	334	menu_finalize(menu);
	335	menu->parent = parent;
	336	last_menu = menu;
	337	}
	338	if (last_menu) {
	339	parent->list = parent->next;
	340	parent->next = last_menu->next;
	341	last_menu->next = NULL;
	342	}
ff5ff606 AL	343
ff5ff606 AL	344	sym->dir_dep.expr = parent->dep;
1da177e4 LT	345	}
1da177e4 LT	346	for (menu = parent->list; menu; menu = menu->next) {
5a1aa8a1 RZ	347	if (sym && sym_is_choice(sym) &&
	348	menu->sym && !sym_is_choice_value(menu->sym)) {
	349	current_entry = menu;
1da177e4 LT	350	menu->sym->flags \|= SYMBOL_CHOICEVAL;
	351	if (!menu->prompt)
	352	menu_warn(menu, "choice value must have a prompt");
	353	for (prop = menu->sym->prop; prop; prop = prop->next) {
1da177e4 LT	354	if (prop->type == P_DEFAULT)
1da177e4 LT	355	prop_warn(prop, "defaults for choice "
5a1aa8a1 RZ	356	"values not supported");
	357	if (prop->menu == menu)
	358	continue;
	359	if (prop->type == P_PROMPT &&
	360	prop->menu->parent->sym != sym)
	361	prop_warn(prop, "choice value used outside its choice group");
1da177e4	362	}
f5eaa323 JB	363	/* Non-tristate choice values of tristate choices must
	364	* depend on the choice being set to Y. The choice
	365	* values' dependencies were propagated to their
	366	* properties above, so the change here must be re-
5a1aa8a1 RZ	367	* propagated.
5a1aa8a1 RZ	368	*/
f5eaa323 JB	369	if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
f5eaa323 JB	370	basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
5a1aa8a1	371	menu->dep = expr_alloc_and(basedep, menu->dep);
f5eaa323 JB	372	for (prop = menu->sym->prop; prop; prop = prop->next) {
	373	if (prop->menu != menu)
	374	continue;
5a1aa8a1 RZ	375	prop->visible.expr = expr_alloc_and(expr_copy(basedep),
5a1aa8a1 RZ	376	prop->visible.expr);
f5eaa323 JB	377	}
f5eaa323 JB	378	}
1da177e4 LT	379	menu_add_symbol(P_CHOICE, sym, NULL);
	380	prop = sym_get_choice_prop(sym);
	381	for (ep = &prop->expr; ep; ep = &(ep)->left.expr)
	382	;
7a962923	383	*ep = expr_alloc_one(E_LIST, NULL);
1da177e4 LT	384	(*ep)->right.sym = menu->sym;
	385	}
	386	if (menu->list && (!menu->prompt \|\| !menu->prompt->text)) {
	387	for (last_menu = menu->list; ; last_menu = last_menu->next) {
	388	last_menu->parent = parent;
	389	if (!last_menu->next)
	390	break;
	391	}
	392	last_menu->next = menu->next;
	393	menu->next = menu->list;
	394	menu->list = NULL;
	395	}
	396	}
	397
	398	if (sym && !(sym->flags & SYMBOL_WARNED)) {
	399	if (sym->type == S_UNKNOWN)
f001f7f8	400	menu_warn(parent, "config symbol defined without type");
1da177e4 LT	401
1da177e4 LT	402	if (sym_is_choice(sym) && !parent->prompt)
f001f7f8	403	menu_warn(parent, "choice must have a prompt");
1da177e4 LT	404
	405	/* Check properties connected to this symbol */
	406	sym_check_prop(sym);
	407	sym->flags \|= SYMBOL_WARNED;
	408	}
	409
	410	if (sym && !sym_is_optional(sym) && parent->prompt) {
	411	sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
	412	expr_alloc_and(parent->prompt->visible.expr,
	413	expr_alloc_symbol(&symbol_mod)));
	414	}
	415	}
	416
22c7eca6 LZ	417	bool menu_has_prompt(struct menu *menu)
	418	{
	419	if (!menu->prompt)
	420	return false;
	421	return true;
	422	}
	423
1da177e4 LT	424	bool menu_is_visible(struct menu *menu)
	425	{
	426	struct menu *child;
	427	struct symbol *sym;
	428	tristate visible;
	429
	430	if (!menu->prompt)
	431	return false;
22c7eca6	432
86e187ff AL	433	if (menu->visibility) {
	434	if (expr_calc_value(menu->visibility) == no)
	435	return no;
	436	}
	437
1da177e4 LT	438	sym = menu->sym;
	439	if (sym) {
	440	sym_calc_value(sym);
	441	visible = menu->prompt->visible.tri;
	442	} else
	443	visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
	444
	445	if (visible != no)
	446	return true;
22c7eca6	447
1da177e4 LT	448	if (!sym \|\| sym_get_tristate_value(menu->sym) == no)
	449	return false;
	450
3fb9acb3 LZ	451	for (child = menu->list; child; child = child->next) {
	452	if (menu_is_visible(child)) {
	453	if (sym)
	454	sym->flags \|= SYMBOL_DEF_USER;
1da177e4	455	return true;
3fb9acb3 LZ	456	}
3fb9acb3 LZ	457	}
22c7eca6	458
1da177e4 LT	459	return false;
	460	}
	461
	462	const char menu_get_prompt(struct menu menu)
	463	{
	464	if (menu->prompt)
01771b0f	465	return menu->prompt->text;
1da177e4	466	else if (menu->sym)
01771b0f	467	return menu->sym->name;
1da177e4 LT	468	return NULL;
	469	}
	470
	471	struct menu menu_get_root_menu(struct menu menu)
	472	{
	473	return &rootmenu;
	474	}
	475
	476	struct menu menu_get_parent_menu(struct menu menu)
	477	{
	478	enum prop_type type;
	479
	480	for (; menu != &rootmenu; menu = menu->parent) {
	481	type = menu->prompt ? menu->prompt->type : 0;
	482	if (type == P_MENU)
	483	break;
	484	}
	485	return menu;
	486	}
	487
03d29122 SR	488	bool menu_has_help(struct menu *menu)
	489	{
	490	return menu->help != NULL;
	491	}
	492
	493	const char menu_get_help(struct menu menu)
	494	{
	495	if (menu->help)
	496	return menu->help;
	497	else
	498	return "";
	499	}
6bd5999d CR	500
	501	static void get_prompt_str(struct gstr r, struct property prop)
	502	{
	503	int i, j;
	504	struct menu submenu[8], menu;
	505
	506	str_printf(r, _("Prompt: %s\n"), _(prop->text));
	507	str_printf(r, _(" Defined at %s:%d\n"), prop->menu->file->name,
	508	prop->menu->lineno);
	509	if (!expr_is_yes(prop->visible.expr)) {
	510	str_append(r, _(" Depends on: "));
	511	expr_gstr_print(prop->visible.expr, r);
	512	str_append(r, "\n");
	513	}
	514	menu = prop->menu->parent;
	515	for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent)
	516	submenu[i++] = menu;
	517	if (i > 0) {
	518	str_printf(r, _(" Location:\n"));
	519	for (j = 4; --i >= 0; j += 2) {
	520	menu = submenu[i];
	521	str_printf(r, "%*c-> %s", j, ' ', _(menu_get_prompt(menu)));
	522	if (menu->sym) {
	523	str_printf(r, " (%s [=%s])", menu->sym->name ?
	524	menu->sym->name : _("<choice>"),
	525	sym_get_string_value(menu->sym));
	526	}
	527	str_append(r, "\n");
	528	}
	529	}
	530	}
	531
	532	void get_symbol_str(struct gstr r, struct symbol sym)
	533	{
	534	bool hit;
	535	struct property *prop;
	536
b040b44c	537	if (sym && sym->name) {
6bd5999d CR	538	str_printf(r, "Symbol: %s [=%s]\n", sym->name,
6bd5999d CR	539	sym_get_string_value(sym));
b040b44c	540	str_printf(r, "Type : %s\n", sym_type_name(sym->type));
70ed0747 LZ	541	if (sym->type == S_INT \|\| sym->type == S_HEX) {
	542	prop = sym_get_range_prop(sym);
	543	if (prop) {
	544	str_printf(r, "Range : ");
	545	expr_gstr_print(prop->expr, r);
	546	str_append(r, "\n");
	547	}
	548	}
b040b44c	549	}
6bd5999d CR	550	for_all_prompts(sym, prop)
	551	get_prompt_str(r, prop);
	552	hit = false;
	553	for_all_properties(sym, prop, P_SELECT) {
	554	if (!hit) {
	555	str_append(r, " Selects: ");
	556	hit = true;
	557	} else
	558	str_printf(r, " && ");
	559	expr_gstr_print(prop->expr, r);
	560	}
	561	if (hit)
	562	str_append(r, "\n");
	563	if (sym->rev_dep.expr) {
	564	str_append(r, _(" Selected by: "));
	565	expr_gstr_print(sym->rev_dep.expr, r);
	566	str_append(r, "\n");
	567	}
	568	str_append(r, "\n\n");
	569	}
	570
692d97c3	571	struct gstr get_relations_str(struct symbol **sym_arr)
	572	{
	573	struct symbol *sym;
	574	struct gstr res = str_new();
	575	int i;
	576
	577	for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
	578	get_symbol_str(&res, sym);
	579	if (!i)
	580	str_append(&res, _("No matches found.\n"));
	581	return res;
	582	}
	583
	584
6bd5999d CR	585	void menu_get_ext_help(struct menu menu, struct gstr help)
	586	{
	587	struct symbol *sym = menu->sym;
	588
	589	if (menu_has_help(menu)) {
	590	if (sym->name) {
ffb5957b	591	str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
6bd5999d CR	592	str_append(help, _(menu_get_help(menu)));
	593	str_append(help, "\n");
	594	}
	595	} else {
	596	str_append(help, nohelp_text);
	597	}
4779105e CR	598	if (sym)
4779105e CR	599	get_symbol_str(help, sym);
6bd5999d	600	}