[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"

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;
}

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;
}

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)
			prop_warn(prop, "prompt redefined");
		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_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));
}

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 '%'"
				    " 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;
		}
	}
	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_is_visible(struct menu *menu)
{
	struct menu *child;
	struct symbol *sym;
	tristate visible;

	if (!menu->prompt)
		return false;
	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))
			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 "";
}
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
	12	struct menu rootmenu;
	13	static struct menu **last_entry_ptr;
	14
	15	struct file *file_list;
	16	struct file *current_file;
	17
93449082	18	void menu_warn(struct menu menu, const char fmt, ...)
1da177e4 LT	19	{
	20	va_list ap;
	21	va_start(ap, fmt);
	22	fprintf(stderr, "%s:%d:warning: ", menu->file->name, menu->lineno);
	23	vfprintf(stderr, fmt, ap);
	24	fprintf(stderr, "\n");
	25	va_end(ap);
	26	}
	27
	28	static void prop_warn(struct property prop, const char fmt, ...)
	29	{
	30	va_list ap;
	31	va_start(ap, fmt);
	32	fprintf(stderr, "%s:%d:warning: ", prop->file->name, prop->lineno);
	33	vfprintf(stderr, fmt, ap);
	34	fprintf(stderr, "\n");
	35	va_end(ap);
	36	}
	37
	38	void menu_init(void)
	39	{
	40	current_entry = current_menu = &rootmenu;
	41	last_entry_ptr = &rootmenu.list;
	42	}
	43
	44	void menu_add_entry(struct symbol *sym)
	45	{
	46	struct menu *menu;
	47
	48	menu = malloc(sizeof(*menu));
	49	memset(menu, 0, sizeof(*menu));
	50	menu->sym = sym;
	51	menu->parent = current_menu;
	52	menu->file = current_file;
	53	menu->lineno = zconf_lineno();
	54
	55	*last_entry_ptr = menu;
	56	last_entry_ptr = &menu->next;
	57	current_entry = menu;
	58	}
	59
	60	void menu_end_entry(void)
	61	{
	62	}
	63
a02f0570	64	struct menu *menu_add_menu(void)
1da177e4	65	{
a02f0570	66	menu_end_entry();
1da177e4	67	last_entry_ptr = &current_entry->list;
a02f0570	68	return current_menu = current_entry;
1da177e4 LT	69	}
	70
	71	void menu_end_menu(void)
	72	{
	73	last_entry_ptr = &current_menu->next;
	74	current_menu = current_menu->parent;
	75	}
	76
	77	struct expr menu_check_dep(struct expr e)
	78	{
	79	if (!e)
	80	return e;
	81
	82	switch (e->type) {
	83	case E_NOT:
	84	e->left.expr = menu_check_dep(e->left.expr);
	85	break;
	86	case E_OR:
	87	case E_AND:
	88	e->left.expr = menu_check_dep(e->left.expr);
	89	e->right.expr = menu_check_dep(e->right.expr);
	90	break;
	91	case E_SYMBOL:
	92	/* change 'm' into 'm' && MODULES */
	93	if (e->left.sym == &symbol_mod)
	94	return expr_alloc_and(e, expr_alloc_symbol(modules_sym));
	95	break;
	96	default:
	97	break;
	98	}
	99	return e;
	100	}
	101
	102	void menu_add_dep(struct expr *dep)
	103	{
	104	current_entry->dep = expr_alloc_and(current_entry->dep, menu_check_dep(dep));
	105	}
	106
	107	void menu_set_type(int type)
	108	{
	109	struct symbol *sym = current_entry->sym;
	110
	111	if (sym->type == type)
	112	return;
	113	if (sym->type == S_UNKNOWN) {
	114	sym->type = type;
	115	return;
	116	}
f001f7f8	117	menu_warn(current_entry, "type of '%s' redefined from '%s' to '%s'",
1da177e4 LT	118	sym->name ? sym->name : "<choice>",
	119	sym_type_name(sym->type), sym_type_name(type));
	120	}
	121
	122	struct property menu_add_prop(enum prop_type type, char prompt, struct expr expr, struct expr dep)
	123	{
	124	struct property *prop = prop_alloc(type, current_entry->sym);
	125
	126	prop->menu = current_entry;
1da177e4 LT	127	prop->expr = expr;
	128	prop->visible.expr = menu_check_dep(dep);
	129
	130	if (prompt) {
f001f7f8 RZ	131	if (isspace(*prompt)) {
	132	prop_warn(prop, "leading whitespace ignored");
	133	while (isspace(*prompt))
	134	prompt++;
	135	}
1da177e4	136	if (current_entry->prompt)
f001f7f8	137	prop_warn(prop, "prompt redefined");
1da177e4 LT	138	current_entry->prompt = prop;
1da177e4 LT	139	}
f001f7f8	140	prop->text = prompt;
1da177e4 LT	141
	142	return prop;
	143	}
	144
fb7f6ff6	145	struct property menu_add_prompt(enum prop_type type, char prompt, struct expr *dep)
1da177e4	146	{
fb7f6ff6	147	return menu_add_prop(type, prompt, NULL, dep);
1da177e4 LT	148	}
	149
	150	void menu_add_expr(enum prop_type type, struct expr expr, struct expr dep)
	151	{
	152	menu_add_prop(type, NULL, expr, dep);
	153	}
	154
	155	void menu_add_symbol(enum prop_type type, struct symbol sym, struct expr dep)
	156	{
	157	menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
	158	}
	159
f6a88aa8 RZ	160	void menu_add_option(int token, char *arg)
f6a88aa8 RZ	161	{
face4374 RZ	162	struct property *prop;
	163
	164	switch (token) {
	165	case T_OPT_MODULES:
	166	prop = prop_alloc(P_DEFAULT, modules_sym);
	167	prop->expr = expr_alloc_symbol(current_entry->sym);
	168	break;
	169	case T_OPT_DEFCONFIG_LIST:
	170	if (!sym_defconfig_list)
	171	sym_defconfig_list = current_entry->sym;
	172	else if (sym_defconfig_list != current_entry->sym)
	173	zconf_error("trying to redefine defconfig symbol");
	174	break;
93449082 RZ	175	case T_OPT_ENV:
	176	prop_add_env(arg);
	177	break;
face4374	178	}
f6a88aa8 RZ	179	}
f6a88aa8 RZ	180
4cf3cbe2 RZ	181	static int menu_range_valid_sym(struct symbol sym, struct symbol sym2)
	182	{
	183	return sym2->type == S_INT \|\| sym2->type == S_HEX \|\|
	184	(sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
	185	}
	186
1da177e4 LT	187	void sym_check_prop(struct symbol *sym)
	188	{
	189	struct property *prop;
	190	struct symbol *sym2;
	191	for (prop = sym->prop; prop; prop = prop->next) {
	192	switch (prop->type) {
	193	case P_DEFAULT:
	194	if ((sym->type == S_STRING \|\| sym->type == S_INT \|\| sym->type == S_HEX) &&
	195	prop->expr->type != E_SYMBOL)
	196	prop_warn(prop,
	197	"default for config symbol '%'"
	198	" must be a single symbol", sym->name);
	199	break;
	200	case P_SELECT:
	201	sym2 = prop_get_symbol(prop);
	202	if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
	203	prop_warn(prop,
	204	"config symbol '%s' uses select, but is "
	205	"not boolean or tristate", sym->name);
603d4988 SR	206	else if (sym2->type != S_UNKNOWN &&
	207	sym2->type != S_BOOLEAN &&
	208	sym2->type != S_TRISTATE)
1da177e4 LT	209	prop_warn(prop,
	210	"'%s' has wrong type. 'select' only "
	211	"accept arguments of boolean and "
	212	"tristate type", sym2->name);
	213	break;
	214	case P_RANGE:
	215	if (sym->type != S_INT && sym->type != S_HEX)
	216	prop_warn(prop, "range is only allowed "
	217	"for int or hex symbols");
4cf3cbe2 RZ	218	if (!menu_range_valid_sym(sym, prop->expr->left.sym) \|\|
4cf3cbe2 RZ	219	!menu_range_valid_sym(sym, prop->expr->right.sym))
1da177e4 LT	220	prop_warn(prop, "range is invalid");
	221	break;
	222	default:
	223	;
	224	}
	225	}
	226	}
	227
	228	void menu_finalize(struct menu *parent)
	229	{
	230	struct menu menu, last_menu;
	231	struct symbol *sym;
	232	struct property *prop;
	233	struct expr parentdep, basedep, dep, dep2, **ep;
	234
	235	sym = parent->sym;
	236	if (parent->list) {
	237	if (sym && sym_is_choice(sym)) {
5a1aa8a1 RZ	238	if (sym->type == S_UNKNOWN) {
	239	/* find the first choice value to find out choice type */
	240	current_entry = parent;
	241	for (menu = parent->list; menu; menu = menu->next) {
	242	if (menu->sym && menu->sym->type != S_UNKNOWN) {
f5eaa323	243	menu_set_type(menu->sym->type);
5a1aa8a1 RZ	244	break;
5a1aa8a1 RZ	245	}
1da177e4 LT	246	}
1da177e4 LT	247	}
5a1aa8a1 RZ	248	/* set the type of the remaining choice values */
	249	for (menu = parent->list; menu; menu = menu->next) {
	250	current_entry = menu;
	251	if (menu->sym && menu->sym->type == S_UNKNOWN)
	252	menu_set_type(sym->type);
	253	}
1da177e4 LT	254	parentdep = expr_alloc_symbol(sym);
	255	} else if (parent->prompt)
	256	parentdep = parent->prompt->visible.expr;
	257	else
	258	parentdep = parent->dep;
	259
	260	for (menu = parent->list; menu; menu = menu->next) {
	261	basedep = expr_transform(menu->dep);
e8b8c977	262	basedep = expr_alloc_and(expr_copy(parentdep), basedep);
1da177e4 LT	263	basedep = expr_eliminate_dups(basedep);
	264	menu->dep = basedep;
	265	if (menu->sym)
	266	prop = menu->sym->prop;
	267	else
	268	prop = menu->prompt;
	269	for (; prop; prop = prop->next) {
	270	if (prop->menu != menu)
	271	continue;
	272	dep = expr_transform(prop->visible.expr);
	273	dep = expr_alloc_and(expr_copy(basedep), dep);
	274	dep = expr_eliminate_dups(dep);
	275	if (menu->sym && menu->sym->type != S_TRISTATE)
	276	dep = expr_trans_bool(dep);
	277	prop->visible.expr = dep;
	278	if (prop->type == P_SELECT) {
	279	struct symbol *es = prop_get_symbol(prop);
	280	es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
	281	expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
	282	}
	283	}
	284	}
	285	for (menu = parent->list; menu; menu = menu->next)
	286	menu_finalize(menu);
	287	} else if (sym) {
	288	basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
	289	basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
	290	basedep = expr_eliminate_dups(expr_transform(basedep));
	291	last_menu = NULL;
	292	for (menu = parent->next; menu; menu = menu->next) {
	293	dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
	294	if (!expr_contains_symbol(dep, sym))
	295	break;
	296	if (expr_depends_symbol(dep, sym))
	297	goto next;
	298	dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
	299	dep = expr_eliminate_dups(expr_transform(dep));
	300	dep2 = expr_copy(basedep);
	301	expr_eliminate_eq(&dep, &dep2);
	302	expr_free(dep);
	303	if (!expr_is_yes(dep2)) {
	304	expr_free(dep2);
	305	break;
	306	}
	307	expr_free(dep2);
	308	next:
	309	menu_finalize(menu);
	310	menu->parent = parent;
	311	last_menu = menu;
	312	}
	313	if (last_menu) {
	314	parent->list = parent->next;
	315	parent->next = last_menu->next;
	316	last_menu->next = NULL;
	317	}
	318	}
	319	for (menu = parent->list; menu; menu = menu->next) {
5a1aa8a1 RZ	320	if (sym && sym_is_choice(sym) &&
	321	menu->sym && !sym_is_choice_value(menu->sym)) {
	322	current_entry = menu;
1da177e4 LT	323	menu->sym->flags \|= SYMBOL_CHOICEVAL;
	324	if (!menu->prompt)
	325	menu_warn(menu, "choice value must have a prompt");
	326	for (prop = menu->sym->prop; prop; prop = prop->next) {
1da177e4 LT	327	if (prop->type == P_DEFAULT)
1da177e4 LT	328	prop_warn(prop, "defaults for choice "
5a1aa8a1 RZ	329	"values not supported");
	330	if (prop->menu == menu)
	331	continue;
	332	if (prop->type == P_PROMPT &&
	333	prop->menu->parent->sym != sym)
	334	prop_warn(prop, "choice value used outside its choice group");
1da177e4	335	}
f5eaa323 JB	336	/* Non-tristate choice values of tristate choices must
	337	* depend on the choice being set to Y. The choice
	338	* values' dependencies were propagated to their
	339	* properties above, so the change here must be re-
5a1aa8a1 RZ	340	* propagated.
5a1aa8a1 RZ	341	*/
f5eaa323 JB	342	if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
f5eaa323 JB	343	basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
5a1aa8a1	344	menu->dep = expr_alloc_and(basedep, menu->dep);
f5eaa323 JB	345	for (prop = menu->sym->prop; prop; prop = prop->next) {
	346	if (prop->menu != menu)
	347	continue;
5a1aa8a1 RZ	348	prop->visible.expr = expr_alloc_and(expr_copy(basedep),
5a1aa8a1 RZ	349	prop->visible.expr);
f5eaa323 JB	350	}
f5eaa323 JB	351	}
1da177e4 LT	352	menu_add_symbol(P_CHOICE, sym, NULL);
	353	prop = sym_get_choice_prop(sym);
	354	for (ep = &prop->expr; ep; ep = &(ep)->left.expr)
	355	;
7a962923	356	*ep = expr_alloc_one(E_LIST, NULL);
1da177e4 LT	357	(*ep)->right.sym = menu->sym;
	358	}
	359	if (menu->list && (!menu->prompt \|\| !menu->prompt->text)) {
	360	for (last_menu = menu->list; ; last_menu = last_menu->next) {
	361	last_menu->parent = parent;
	362	if (!last_menu->next)
	363	break;
	364	}
	365	last_menu->next = menu->next;
	366	menu->next = menu->list;
	367	menu->list = NULL;
	368	}
	369	}
	370
	371	if (sym && !(sym->flags & SYMBOL_WARNED)) {
	372	if (sym->type == S_UNKNOWN)
f001f7f8	373	menu_warn(parent, "config symbol defined without type");
1da177e4 LT	374
1da177e4 LT	375	if (sym_is_choice(sym) && !parent->prompt)
f001f7f8	376	menu_warn(parent, "choice must have a prompt");
1da177e4 LT	377
	378	/* Check properties connected to this symbol */
	379	sym_check_prop(sym);
	380	sym->flags \|= SYMBOL_WARNED;
	381	}
	382
	383	if (sym && !sym_is_optional(sym) && parent->prompt) {
	384	sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
	385	expr_alloc_and(parent->prompt->visible.expr,
	386	expr_alloc_symbol(&symbol_mod)));
	387	}
	388	}
	389
	390	bool menu_is_visible(struct menu *menu)
	391	{
	392	struct menu *child;
	393	struct symbol *sym;
	394	tristate visible;
	395
	396	if (!menu->prompt)
	397	return false;
	398	sym = menu->sym;
	399	if (sym) {
	400	sym_calc_value(sym);
	401	visible = menu->prompt->visible.tri;
	402	} else
	403	visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
	404
	405	if (visible != no)
	406	return true;
	407	if (!sym \|\| sym_get_tristate_value(menu->sym) == no)
	408	return false;
	409
	410	for (child = menu->list; child; child = child->next)
	411	if (menu_is_visible(child))
	412	return true;
	413	return false;
	414	}
	415
	416	const char menu_get_prompt(struct menu menu)
	417	{
	418	if (menu->prompt)
01771b0f	419	return menu->prompt->text;
1da177e4	420	else if (menu->sym)
01771b0f	421	return menu->sym->name;
1da177e4 LT	422	return NULL;
	423	}
	424
	425	struct menu menu_get_root_menu(struct menu menu)
	426	{
	427	return &rootmenu;
	428	}
	429
	430	struct menu menu_get_parent_menu(struct menu menu)
	431	{
	432	enum prop_type type;
	433
	434	for (; menu != &rootmenu; menu = menu->parent) {
	435	type = menu->prompt ? menu->prompt->type : 0;
	436	if (type == P_MENU)
	437	break;
	438	}
	439	return menu;
	440	}
	441
03d29122 SR	442	bool menu_has_help(struct menu *menu)
	443	{
	444	return menu->help != NULL;
	445	}
	446
	447	const char menu_get_help(struct menu menu)
	448	{
	449	if (menu->help)
	450	return menu->help;
	451	else
	452	return "";
	453	}