[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;

static 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;
	}
}

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)
				prop_warn(prop,
				    "'select' used by config symbol '%s' "
				    "refers to undefined symbol '%s'",
				    sym->name, sym2->name);
			else if (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)) {
			/* find out choice type */
			enum symbol_type type = S_UNKNOWN;

			for (menu = parent->list; menu; menu = menu->next) {
				if (menu->sym && menu->sym->type != S_UNKNOWN) {
					if (type == S_UNKNOWN)
						type = menu->sym->type;
					if (type != S_BOOLEAN)
						break;
					if (menu->sym->type == S_TRISTATE) {
						type = S_TRISTATE;
						break;
					}
				}
			}
			current_entry = parent;
			menu_set_type(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);
			dep = parentdep;
			if (sym && sym_is_choice(sym) && menu->sym) {
				enum symbol_type type = menu->sym->type;

				if (type == S_UNKNOWN)
					type = sym->type;
			     if (type != S_TRISTATE)
					dep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
			}
			basedep = expr_alloc_and(expr_copy(dep), 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) {
			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_PROMPT && prop->menu != menu) {
					prop_warn(prop, "choice values "
					    "currently only support a "
					    "single prompt");
				}
				if (prop->type == P_DEFAULT)
					prop_warn(prop, "defaults for choice "
					    "values not supported");
			}
			current_entry = menu;
			if (menu->sym->type == S_UNKNOWN)
				menu_set_type(sym->type);
			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_CHOICE, 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
	18	static void menu_warn(struct menu menu, const char fmt, ...)
	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;
	175	}
f6a88aa8 RZ	176	}
f6a88aa8 RZ	177
4cf3cbe2 RZ	178	static int menu_range_valid_sym(struct symbol sym, struct symbol sym2)
	179	{
	180	return sym2->type == S_INT \|\| sym2->type == S_HEX \|\|
	181	(sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
	182	}
	183
1da177e4 LT	184	void sym_check_prop(struct symbol *sym)
	185	{
	186	struct property *prop;
	187	struct symbol *sym2;
	188	for (prop = sym->prop; prop; prop = prop->next) {
	189	switch (prop->type) {
	190	case P_DEFAULT:
	191	if ((sym->type == S_STRING \|\| sym->type == S_INT \|\| sym->type == S_HEX) &&
	192	prop->expr->type != E_SYMBOL)
	193	prop_warn(prop,
	194	"default for config symbol '%'"
	195	" must be a single symbol", sym->name);
	196	break;
	197	case P_SELECT:
	198	sym2 = prop_get_symbol(prop);
	199	if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
	200	prop_warn(prop,
	201	"config symbol '%s' uses select, but is "
	202	"not boolean or tristate", sym->name);
	203	else if (sym2->type == S_UNKNOWN)
	204	prop_warn(prop,
	205	"'select' used by config symbol '%s' "
1e093ecd	206	"refers to undefined symbol '%s'",
1da177e4 LT	207	sym->name, sym2->name);
	208	else if (sym2->type != S_BOOLEAN && sym2->type != S_TRISTATE)
	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)) {
a5bf3d89 JB	238	/* find out choice type */
	239	enum symbol_type type = S_UNKNOWN;
	240
1da177e4	241	for (menu = parent->list; menu; menu = menu->next) {
a5bf3d89 JB	242	if (menu->sym && menu->sym->type != S_UNKNOWN) {
	243	if (type == S_UNKNOWN)
	244	type = menu->sym->type;
	245	if (type != S_BOOLEAN)
	246	break;
	247	if (menu->sym->type == S_TRISTATE) {
	248	type = S_TRISTATE;
	249	break;
	250	}
1da177e4 LT	251	}
1da177e4 LT	252	}
a5bf3d89 JB	253	current_entry = parent;
a5bf3d89 JB	254	menu_set_type(type);
1da177e4 LT	255	parentdep = expr_alloc_symbol(sym);
	256	} else if (parent->prompt)
	257	parentdep = parent->prompt->visible.expr;
	258	else
	259	parentdep = parent->dep;
	260
	261	for (menu = parent->list; menu; menu = menu->next) {
	262	basedep = expr_transform(menu->dep);
a5bf3d89 JB	263	dep = parentdep;
	264	if (sym && sym_is_choice(sym) && menu->sym) {
	265	enum symbol_type type = menu->sym->type;
	266
	267	if (type == S_UNKNOWN)
	268	type = sym->type;
	269	if (type != S_TRISTATE)
	270	dep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
	271	}
	272	basedep = expr_alloc_and(expr_copy(dep), basedep);
1da177e4 LT	273	basedep = expr_eliminate_dups(basedep);
	274	menu->dep = basedep;
	275	if (menu->sym)
	276	prop = menu->sym->prop;
	277	else
	278	prop = menu->prompt;
	279	for (; prop; prop = prop->next) {
	280	if (prop->menu != menu)
	281	continue;
	282	dep = expr_transform(prop->visible.expr);
	283	dep = expr_alloc_and(expr_copy(basedep), dep);
	284	dep = expr_eliminate_dups(dep);
	285	if (menu->sym && menu->sym->type != S_TRISTATE)
	286	dep = expr_trans_bool(dep);
	287	prop->visible.expr = dep;
	288	if (prop->type == P_SELECT) {
	289	struct symbol *es = prop_get_symbol(prop);
	290	es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
	291	expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
	292	}
	293	}
	294	}
	295	for (menu = parent->list; menu; menu = menu->next)
	296	menu_finalize(menu);
	297	} else if (sym) {
	298	basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
	299	basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
	300	basedep = expr_eliminate_dups(expr_transform(basedep));
	301	last_menu = NULL;
	302	for (menu = parent->next; menu; menu = menu->next) {
	303	dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
	304	if (!expr_contains_symbol(dep, sym))
	305	break;
	306	if (expr_depends_symbol(dep, sym))
	307	goto next;
	308	dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
	309	dep = expr_eliminate_dups(expr_transform(dep));
	310	dep2 = expr_copy(basedep);
	311	expr_eliminate_eq(&dep, &dep2);
	312	expr_free(dep);
	313	if (!expr_is_yes(dep2)) {
	314	expr_free(dep2);
	315	break;
	316	}
	317	expr_free(dep2);
	318	next:
	319	menu_finalize(menu);
	320	menu->parent = parent;
	321	last_menu = menu;
	322	}
	323	if (last_menu) {
	324	parent->list = parent->next;
	325	parent->next = last_menu->next;
	326	last_menu->next = NULL;
	327	}
	328	}
	329	for (menu = parent->list; menu; menu = menu->next) {
	330	if (sym && sym_is_choice(sym) && menu->sym) {
	331	menu->sym->flags \|= SYMBOL_CHOICEVAL;
	332	if (!menu->prompt)
	333	menu_warn(menu, "choice value must have a prompt");
	334	for (prop = menu->sym->prop; prop; prop = prop->next) {
	335	if (prop->type == P_PROMPT && prop->menu != menu) {
	336	prop_warn(prop, "choice values "
337	"currently only support a "
338	"single prompt");
339	}
340	if (prop->type == P_DEFAULT)
341	prop_warn(prop, "defaults for choice "
342	"values not supported");
343	}
344	current_entry = menu;
a5bf3d89 JB	345	if (menu->sym->type == S_UNKNOWN)
a5bf3d89 JB	346	menu_set_type(sym->type);
1da177e4 LT	347	menu_add_symbol(P_CHOICE, sym, NULL);
	348	prop = sym_get_choice_prop(sym);
	349	for (ep = &prop->expr; ep; ep = &(ep)->left.expr)
	350	;
	351	*ep = expr_alloc_one(E_CHOICE, NULL);
	352	(*ep)->right.sym = menu->sym;
	353	}
	354	if (menu->list && (!menu->prompt \|\| !menu->prompt->text)) {
	355	for (last_menu = menu->list; ; last_menu = last_menu->next) {
	356	last_menu->parent = parent;
	357	if (!last_menu->next)
	358	break;
	359	}
	360	last_menu->next = menu->next;
	361	menu->next = menu->list;
	362	menu->list = NULL;
	363	}
	364	}
	365
	366	if (sym && !(sym->flags & SYMBOL_WARNED)) {
	367	if (sym->type == S_UNKNOWN)
f001f7f8	368	menu_warn(parent, "config symbol defined without type");
1da177e4 LT	369
1da177e4 LT	370	if (sym_is_choice(sym) && !parent->prompt)
f001f7f8	371	menu_warn(parent, "choice must have a prompt");
1da177e4 LT	372
	373	/* Check properties connected to this symbol */
	374	sym_check_prop(sym);
	375	sym->flags \|= SYMBOL_WARNED;
	376	}
	377
	378	if (sym && !sym_is_optional(sym) && parent->prompt) {
	379	sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
	380	expr_alloc_and(parent->prompt->visible.expr,
	381	expr_alloc_symbol(&symbol_mod)));
	382	}
	383	}
	384
	385	bool menu_is_visible(struct menu *menu)
	386	{
	387	struct menu *child;
	388	struct symbol *sym;
	389	tristate visible;
	390
	391	if (!menu->prompt)
	392	return false;
	393	sym = menu->sym;
	394	if (sym) {
	395	sym_calc_value(sym);
	396	visible = menu->prompt->visible.tri;
	397	} else
	398	visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
	399
	400	if (visible != no)
	401	return true;
	402	if (!sym \|\| sym_get_tristate_value(menu->sym) == no)
	403	return false;
	404
	405	for (child = menu->list; child; child = child->next)
	406	if (menu_is_visible(child))
	407	return true;
	408	return false;
	409	}
	410
	411	const char menu_get_prompt(struct menu menu)
	412	{
	413	if (menu->prompt)
3b9fa093	414	return _(menu->prompt->text);
1da177e4	415	else if (menu->sym)
3b9fa093	416	return _(menu->sym->name);
1da177e4 LT	417	return NULL;
	418	}
	419
	420	struct menu menu_get_root_menu(struct menu menu)
	421	{
	422	return &rootmenu;
	423	}
	424
	425	struct menu menu_get_parent_menu(struct menu menu)
	426	{
	427	enum prop_type type;
	428
	429	for (; menu != &rootmenu; menu = menu->parent) {
	430	type = menu->prompt ? menu->prompt->type : 0;
	431	if (type == P_MENU)
	432	break;
	433	}
	434	return menu;
	435	}
	436
03d29122 SR	437	bool menu_has_help(struct menu *menu)
	438	{
	439	return menu->help != NULL;
	440	}
	441
	442	const char menu_get_help(struct menu menu)
	443	{
	444	if (menu->help)
	445	return menu->help;
	446	else
	447	return "";
	448	}