[people/ms/u-boot.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 <ctype.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>

#include "lkc.h"

static const char nohelp_text[] = "There is no help available for this option.";

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 = xmalloc(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,
		"ignoring type redefinition of '%s' from '%s' to '%s'",
		sym->name ? sym->name : "<choice>",
		sym_type_name(sym->type), sym_type_name(type));
}

static 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) {
				struct expr *dup_expr;

				if (!menu->visibility)
					continue;
				/*
				 * Do not add a reference to the
				 * menu's visibility expression but
				 * use a copy of it.  Otherwise the
				 * expression reduction functions
				 * will modify expressions that have
				 * multiple references which can
				 * cause unwanted side effects.
				 */
				dup_expr = expr_copy(menu->visibility);

				prop->visible.expr
					= expr_alloc_and(prop->visible.expr,
							 dup_expr);
			}
		}

		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)
{
	switch (token) {
	case T_OPT_MODULES:
		if (modules_sym)
			zconf_error("symbol '%s' redefines option 'modules'"
				    " already defined by symbol '%s'",
				    current_entry->sym->name,
				    modules_sym->name
				    );
		modules_sym = 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;
	case T_OPT_ALLNOCONFIG_Y:
		current_entry->sym->flags |= SYMBOL_ALLNOCONFIG_Y;
		break;
	}
}

static int menu_validate_number(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;
	char *use;

	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);
			if (prop->expr->type != E_SYMBOL)
				break;
			sym2 = prop_get_symbol(prop);
			if (sym->type == S_HEX || sym->type == S_INT) {
				if (!menu_validate_number(sym, sym2))
					prop_warn(prop,
					    "'%s': number is invalid",
					    sym->name);
			}
			break;
		case P_SELECT:
		case P_IMPLY:
			use = prop->type == P_SELECT ? "select" : "imply";
			sym2 = prop_get_symbol(prop);
			if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
				prop_warn(prop,
				    "config symbol '%s' uses %s, but is "
				    "not boolean or tristate", sym->name, use);
			else if (sym2->type != S_UNKNOWN &&
				 sym2->type != S_BOOLEAN &&
				 sym2->type != S_TRISTATE)
				prop_warn(prop,
				    "'%s' has wrong type. '%s' only "
				    "accept arguments of boolean and "
				    "tristate type", sym2->name, use);
			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_validate_number(sym, prop->expr->left.sym) ||
			    !menu_validate_number(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)));
				} else if (prop->type == P_IMPLY) {
					struct symbol *es = prop_get_symbol(prop);
					es->implied.expr = expr_alloc_or(es->implied.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 = expr_alloc_or(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;
}

/*
 * Determine if a menu is empty.
 * A menu is considered empty if it contains no or only
 * invisible entries.
 */
bool menu_is_empty(struct menu *menu)
{
	struct menu *child;

	for (child = menu->list; child; child = child->next) {
		if (menu_is_visible(child))
			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 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)) {
			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,
			   struct list_head *head)
{
	int i, j;
	struct menu *submenu[8], *menu, *location = NULL;
	struct jump_key *jump = NULL;

	str_printf(r, _("Prompt: %s\n"), _(prop->text));
	menu = prop->menu->parent;
	for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
		bool accessible = menu_is_visible(menu);

		submenu[i++] = menu;
		if (location == NULL && accessible)
			location = menu;
	}
	if (head && location) {
		jump = xmalloc(sizeof(struct jump_key));

		if (menu_is_visible(prop->menu)) {
			/*
			 * There is not enough room to put the hint at the
			 * beginning of the "Prompt" line. Put the hint on the
			 * last "Location" line even when it would belong on
			 * the former.
			 */
			jump->target = prop->menu;
		} else
			jump->target = location;

		if (list_empty(head))
			jump->index = 0;
		else
			jump->index = list_entry(head->prev, struct jump_key,
						 entries)->index + 1;

		list_add_tail(&jump->entries, head);
	}

	if (i > 0) {
		str_printf(r, _("  Location:\n"));
		for (j = 4; --i >= 0; j += 2) {
			menu = submenu[i];
			if (jump && menu == location)
				jump->offset = strlen(r->s);
			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");
		}
	}
}

/*
 * get property of type P_SYMBOL
 */
static struct property *get_symbol_prop(struct symbol *sym)
{
	struct property *prop = NULL;

	for_all_properties(sym, prop, P_SYMBOL)
		break;
	return prop;
}

static void get_symbol_props_str(struct gstr *r, struct symbol *sym,
				 enum prop_type tok, const char *prefix)
{
	bool hit = false;
	struct property *prop;

	for_all_properties(sym, prop, tok) {
		if (!hit) {
			str_append(r, prefix);
			hit = true;
		} else
			str_printf(r, " && ");
		expr_gstr_print(prop->expr, r);
	}
	if (hit)
		str_append(r, "\n");
}

/*
 * head is optional and may be NULL
 */
static void get_symbol_str(struct gstr *r, struct symbol *sym,
		    struct list_head *head)
{
	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, head);

	prop = get_symbol_prop(sym);
	if (prop) {
		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");
		}
	}

	get_symbol_props_str(r, sym, P_SELECT, _("  Selects: "));
	if (sym->rev_dep.expr) {
		str_append(r, _("  Selected by: "));
		expr_gstr_print(sym->rev_dep.expr, r);
		str_append(r, "\n");
	}

	get_symbol_props_str(r, sym, P_IMPLY, _("  Implies: "));
	if (sym->implied.expr) {
		str_append(r, _("  Implied by: "));
		expr_gstr_print(sym->implied.expr, r);
		str_append(r, "\n");
	}

	str_append(r, "\n\n");
}

struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head)
{
	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, head);
	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;
	const char *help_text = nohelp_text;

	if (menu_has_help(menu)) {
		if (sym->name)
			str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
		help_text = menu_get_help(menu);
	}
	str_printf(help, "%s\n", _(help_text));
	if (sym)
		get_symbol_str(help, sym, NULL);
}
Commit	Line	Data
0a9064fb MY	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 <ctype.h>
	7	#include <stdarg.h>
	8	#include <stdlib.h>
	9	#include <string.h>
	10
	11	#include "lkc.h"
	12
	13	static const char nohelp_text[] = "There is no help available for this option.";
	14
	15	struct menu rootmenu;
	16	static struct menu **last_entry_ptr;
	17
	18	struct file *file_list;
	19	struct file *current_file;
	20
	21	void menu_warn(struct menu menu, const char fmt, ...)
	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
	41	void _menu_init(void)
	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 = xmalloc(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;
	61	if (sym)
	62	menu_add_symbol(P_SYMBOL, sym, NULL);
	63	}
	64
65	void menu_end_entry(void)
66	{
67	}
68
69	struct menu *menu_add_menu(void)
70	{
71	menu_end_entry();
72	last_entry_ptr = &current_entry->list;
73	return current_menu = current_entry;
74	}
75
76	void menu_end_menu(void)
77	{
78	last_entry_ptr = &current_menu->next;
79	current_menu = current_menu->parent;
80	}
81
82	static struct expr menu_check_dep(struct expr e)
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	}
122	menu_warn(current_entry,
123	"ignoring type redefinition of '%s' from '%s' to '%s'",
124	sym->name ? sym->name : "<choice>",
125	sym_type_name(sym->type), sym_type_name(type));
126	}
127
9b5f0b1d	128	static struct property menu_add_prop(enum prop_type type, char prompt, struct expr expr, struct expr dep)
0a9064fb MY	129	{
	130	struct property *prop = prop_alloc(type, current_entry->sym);
	131
	132	prop->menu = current_entry;
	133	prop->expr = expr;
	134	prop->visible.expr = menu_check_dep(dep);
	135
	136	if (prompt) {
	137	if (isspace(*prompt)) {
	138	prop_warn(prop, "leading whitespace ignored");
	139	while (isspace(*prompt))
	140	prompt++;
	141	}
	142	if (current_entry->prompt && current_entry != &rootmenu)
	143	prop_warn(prop, "prompt redefined");
	144
	145	/* Apply all upper menus' visibilities to actual prompts. */
	146	if(type == P_PROMPT) {
	147	struct menu *menu = current_entry;
	148
	149	while ((menu = menu->parent) != NULL) {
	150	struct expr *dup_expr;
	151
	152	if (!menu->visibility)
	153	continue;
	154	/*
	155	* Do not add a reference to the
	156	* menu's visibility expression but
	157	* use a copy of it. Otherwise the
	158	* expression reduction functions
	159	* will modify expressions that have
	160	* multiple references which can
	161	* cause unwanted side effects.
	162	*/
	163	dup_expr = expr_copy(menu->visibility);
	164
	165	prop->visible.expr
	166	= expr_alloc_and(prop->visible.expr,
	167	dup_expr);
	168	}
	169	}
	170
	171	current_entry->prompt = prop;
	172	}
	173	prop->text = prompt;
	174
	175	return prop;
	176	}
	177
	178	struct property menu_add_prompt(enum prop_type type, char prompt, struct expr *dep)
	179	{
	180	return menu_add_prop(type, prompt, NULL, dep);
	181	}
	182
	183	void menu_add_visibility(struct expr *expr)
	184	{
	185	current_entry->visibility = expr_alloc_and(current_entry->visibility,
	186	expr);
	187	}
	188
	189	void menu_add_expr(enum prop_type type, struct expr expr, struct expr dep)
	190	{
	191	menu_add_prop(type, NULL, expr, dep);
	192	}
193
194	void menu_add_symbol(enum prop_type type, struct symbol sym, struct expr dep)
195	{
196	menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
197	}
198
199	void menu_add_option(int token, char *arg)
200	{
201	switch (token) {
202	case T_OPT_MODULES:
203	if (modules_sym)
204	zconf_error("symbol '%s' redefines option 'modules'"
205	" already defined by symbol '%s'",
206	current_entry->sym->name,
207	modules_sym->name
208	);
209	modules_sym = current_entry->sym;
210	break;
211	case T_OPT_DEFCONFIG_LIST:
212	if (!sym_defconfig_list)
213	sym_defconfig_list = current_entry->sym;
214	else if (sym_defconfig_list != current_entry->sym)
215	zconf_error("trying to redefine defconfig symbol");
216	break;
217	case T_OPT_ENV:
218	prop_add_env(arg);
219	break;
220	case T_OPT_ALLNOCONFIG_Y:
221	current_entry->sym->flags \|= SYMBOL_ALLNOCONFIG_Y;
222	break;
223	}
224	}
225
226	static int menu_validate_number(struct symbol sym, struct symbol sym2)
227	{
228	return sym2->type == S_INT \|\| sym2->type == S_HEX \|\|
229	(sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
230	}
231
232	static void sym_check_prop(struct symbol *sym)
233	{
234	struct property *prop;
235	struct symbol *sym2;
bf7ab1e7 MY	236	char *use;
bf7ab1e7 MY	237
0a9064fb MY	238	for (prop = sym->prop; prop; prop = prop->next) {
	239	switch (prop->type) {
	240	case P_DEFAULT:
	241	if ((sym->type == S_STRING \|\| sym->type == S_INT \|\| sym->type == S_HEX) &&
	242	prop->expr->type != E_SYMBOL)
	243	prop_warn(prop,
	244	"default for config symbol '%s'"
	245	" must be a single symbol", sym->name);
	246	if (prop->expr->type != E_SYMBOL)
	247	break;
	248	sym2 = prop_get_symbol(prop);
	249	if (sym->type == S_HEX \|\| sym->type == S_INT) {
	250	if (!menu_validate_number(sym, sym2))
	251	prop_warn(prop,
	252	"'%s': number is invalid",
	253	sym->name);
	254	}
	255	break;
	256	case P_SELECT:
bf7ab1e7 MY	257	case P_IMPLY:
bf7ab1e7 MY	258	use = prop->type == P_SELECT ? "select" : "imply";
0a9064fb MY	259	sym2 = prop_get_symbol(prop);
	260	if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
	261	prop_warn(prop,
bf7ab1e7 MY	262	"config symbol '%s' uses %s, but is "
bf7ab1e7 MY	263	"not boolean or tristate", sym->name, use);
0a9064fb MY	264	else if (sym2->type != S_UNKNOWN &&
	265	sym2->type != S_BOOLEAN &&
	266	sym2->type != S_TRISTATE)
	267	prop_warn(prop,
bf7ab1e7	268	"'%s' has wrong type. '%s' only "
0a9064fb	269	"accept arguments of boolean and "
bf7ab1e7	270	"tristate type", sym2->name, use);
0a9064fb MY	271	break;
	272	case P_RANGE:
	273	if (sym->type != S_INT && sym->type != S_HEX)
	274	prop_warn(prop, "range is only allowed "
	275	"for int or hex symbols");
	276	if (!menu_validate_number(sym, prop->expr->left.sym) \|\|
	277	!menu_validate_number(sym, prop->expr->right.sym))
	278	prop_warn(prop, "range is invalid");
	279	break;
	280	default:
	281	;
	282	}
	283	}
	284	}
	285
	286	void menu_finalize(struct menu *parent)
	287	{
	288	struct menu menu, last_menu;
	289	struct symbol *sym;
	290	struct property *prop;
	291	struct expr parentdep, basedep, dep, dep2, **ep;
	292
	293	sym = parent->sym;
	294	if (parent->list) {
	295	if (sym && sym_is_choice(sym)) {
	296	if (sym->type == S_UNKNOWN) {
	297	/* find the first choice value to find out choice type */
	298	current_entry = parent;
	299	for (menu = parent->list; menu; menu = menu->next) {
	300	if (menu->sym && menu->sym->type != S_UNKNOWN) {
	301	menu_set_type(menu->sym->type);
	302	break;
	303	}
	304	}
	305	}
	306	/* set the type of the remaining choice values */
	307	for (menu = parent->list; menu; menu = menu->next) {
	308	current_entry = menu;
	309	if (menu->sym && menu->sym->type == S_UNKNOWN)
	310	menu_set_type(sym->type);
	311	}
	312	parentdep = expr_alloc_symbol(sym);
	313	} else if (parent->prompt)
	314	parentdep = parent->prompt->visible.expr;
	315	else
	316	parentdep = parent->dep;
	317
	318	for (menu = parent->list; menu; menu = menu->next) {
	319	basedep = expr_transform(menu->dep);
	320	basedep = expr_alloc_and(expr_copy(parentdep), basedep);
	321	basedep = expr_eliminate_dups(basedep);
	322	menu->dep = basedep;
	323	if (menu->sym)
	324	prop = menu->sym->prop;
	325	else
	326	prop = menu->prompt;
	327	for (; prop; prop = prop->next) {
	328	if (prop->menu != menu)
	329	continue;
	330	dep = expr_transform(prop->visible.expr);
	331	dep = expr_alloc_and(expr_copy(basedep), dep);
	332	dep = expr_eliminate_dups(dep);
	333	if (menu->sym && menu->sym->type != S_TRISTATE)
	334	dep = expr_trans_bool(dep);
335	prop->visible.expr = dep;
336	if (prop->type == P_SELECT) {
337	struct symbol *es = prop_get_symbol(prop);
338	es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
339	expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
bf7ab1e7 MY	340	} else if (prop->type == P_IMPLY) {
	341	struct symbol *es = prop_get_symbol(prop);
	342	es->implied.expr = expr_alloc_or(es->implied.expr,
	343	expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
0a9064fb MY	344	}
	345	}
	346	}
	347	for (menu = parent->list; menu; menu = menu->next)
	348	menu_finalize(menu);
	349	} else if (sym) {
	350	basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
	351	basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
	352	basedep = expr_eliminate_dups(expr_transform(basedep));
	353	last_menu = NULL;
	354	for (menu = parent->next; menu; menu = menu->next) {
	355	dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
	356	if (!expr_contains_symbol(dep, sym))
	357	break;
	358	if (expr_depends_symbol(dep, sym))
	359	goto next;
	360	dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
	361	dep = expr_eliminate_dups(expr_transform(dep));
	362	dep2 = expr_copy(basedep);
	363	expr_eliminate_eq(&dep, &dep2);
	364	expr_free(dep);
	365	if (!expr_is_yes(dep2)) {
	366	expr_free(dep2);
	367	break;
	368	}
	369	expr_free(dep2);
	370	next:
	371	menu_finalize(menu);
	372	menu->parent = parent;
	373	last_menu = menu;
	374	}
	375	if (last_menu) {
	376	parent->list = parent->next;
	377	parent->next = last_menu->next;
	378	last_menu->next = NULL;
	379	}
	380
	381	sym->dir_dep.expr = expr_alloc_or(sym->dir_dep.expr, parent->dep);
	382	}
	383	for (menu = parent->list; menu; menu = menu->next) {
	384	if (sym && sym_is_choice(sym) &&
	385	menu->sym && !sym_is_choice_value(menu->sym)) {
	386	current_entry = menu;
	387	menu->sym->flags \|= SYMBOL_CHOICEVAL;
	388	if (!menu->prompt)
	389	menu_warn(menu, "choice value must have a prompt");
	390	for (prop = menu->sym->prop; prop; prop = prop->next) {
	391	if (prop->type == P_DEFAULT)
	392	prop_warn(prop, "defaults for choice "
	393	"values not supported");
	394	if (prop->menu == menu)
	395	continue;
	396	if (prop->type == P_PROMPT &&
	397	prop->menu->parent->sym != sym)
	398	prop_warn(prop, "choice value used outside its choice group");
	399	}
	400	/* Non-tristate choice values of tristate choices must
	401	* depend on the choice being set to Y. The choice
	402	* values' dependencies were propagated to their
	403	* properties above, so the change here must be re-
	404	* propagated.
	405	*/
	406	if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
	407	basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
408	menu->dep = expr_alloc_and(basedep, menu->dep);
409	for (prop = menu->sym->prop; prop; prop = prop->next) {
410	if (prop->menu != menu)
411	continue;
412	prop->visible.expr = expr_alloc_and(expr_copy(basedep),
413	prop->visible.expr);
414	}
415	}
416	menu_add_symbol(P_CHOICE, sym, NULL);
417	prop = sym_get_choice_prop(sym);
418	for (ep = &prop->expr; ep; ep = &(ep)->left.expr)
419	;
420	*ep = expr_alloc_one(E_LIST, NULL);
421	(*ep)->right.sym = menu->sym;
422	}
423	if (menu->list && (!menu->prompt \|\| !menu->prompt->text)) {
424	for (last_menu = menu->list; ; last_menu = last_menu->next) {
425	last_menu->parent = parent;
426	if (!last_menu->next)
427	break;
428	}
429	last_menu->next = menu->next;
430	menu->next = menu->list;
431	menu->list = NULL;
432	}
433	}
434
435	if (sym && !(sym->flags & SYMBOL_WARNED)) {
436	if (sym->type == S_UNKNOWN)
437	menu_warn(parent, "config symbol defined without type");
438
439	if (sym_is_choice(sym) && !parent->prompt)
440	menu_warn(parent, "choice must have a prompt");
441
442	/* Check properties connected to this symbol */
443	sym_check_prop(sym);
444	sym->flags \|= SYMBOL_WARNED;
445	}
446
447	if (sym && !sym_is_optional(sym) && parent->prompt) {
448	sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
449	expr_alloc_and(parent->prompt->visible.expr,
450	expr_alloc_symbol(&symbol_mod)));
451	}
452	}
453
454	bool menu_has_prompt(struct menu *menu)
455	{
456	if (!menu->prompt)
457	return false;
458	return true;
459	}
460
461	/*
462	* Determine if a menu is empty.
463	* A menu is considered empty if it contains no or only
464	* invisible entries.
465	*/
466	bool menu_is_empty(struct menu *menu)
467	{
468	struct menu *child;
469
470	for (child = menu->list; child; child = child->next) {
471	if (menu_is_visible(child))
472	return(false);
473	}
474	return(true);
475	}
476
477	bool menu_is_visible(struct menu *menu)
478	{
479	struct menu *child;
480	struct symbol *sym;
481	tristate visible;
482
483	if (!menu->prompt)
484	return false;
485
486	if (menu->visibility) {
487	if (expr_calc_value(menu->visibility) == no)
bf7ab1e7	488	return false;
0a9064fb MY	489	}
	490
	491	sym = menu->sym;
	492	if (sym) {
	493	sym_calc_value(sym);
	494	visible = menu->prompt->visible.tri;
	495	} else
	496	visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
	497
	498	if (visible != no)
	499	return true;
	500
	501	if (!sym \|\| sym_get_tristate_value(menu->sym) == no)
	502	return false;
	503
	504	for (child = menu->list; child; child = child->next) {
	505	if (menu_is_visible(child)) {
	506	if (sym)
	507	sym->flags \|= SYMBOL_DEF_USER;
	508	return true;
	509	}
	510	}
	511
	512	return false;
	513	}
	514
	515	const char menu_get_prompt(struct menu menu)
	516	{
	517	if (menu->prompt)
	518	return menu->prompt->text;
	519	else if (menu->sym)
	520	return menu->sym->name;
	521	return NULL;
	522	}
	523
	524	struct menu menu_get_root_menu(struct menu menu)
	525	{
	526	return &rootmenu;
	527	}
	528
	529	struct menu menu_get_parent_menu(struct menu menu)
	530	{
	531	enum prop_type type;
	532
	533	for (; menu != &rootmenu; menu = menu->parent) {
	534	type = menu->prompt ? menu->prompt->type : 0;
	535	if (type == P_MENU)
	536	break;
	537	}
	538	return menu;
	539	}
	540
	541	bool menu_has_help(struct menu *menu)
	542	{
	543	return menu->help != NULL;
	544	}
	545
	546	const char menu_get_help(struct menu menu)
	547	{
	548	if (menu->help)
	549	return menu->help;
	550	else
	551	return "";
	552	}
553
554	static void get_prompt_str(struct gstr r, struct property prop,
555	struct list_head *head)
556	{
557	int i, j;
558	struct menu submenu[8], menu, *location = NULL;
60cd06e1	559	struct jump_key *jump = NULL;
0a9064fb MY	560
	561	str_printf(r, _("Prompt: %s\n"), _(prop->text));
	562	menu = prop->menu->parent;
	563	for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
	564	bool accessible = menu_is_visible(menu);
	565
	566	submenu[i++] = menu;
	567	if (location == NULL && accessible)
	568	location = menu;
	569	}
	570	if (head && location) {
	571	jump = xmalloc(sizeof(struct jump_key));
	572
	573	if (menu_is_visible(prop->menu)) {
	574	/*
	575	* There is not enough room to put the hint at the
	576	* beginning of the "Prompt" line. Put the hint on the
	577	* last "Location" line even when it would belong on
	578	* the former.
	579	*/
	580	jump->target = prop->menu;
	581	} else
	582	jump->target = location;
	583
	584	if (list_empty(head))
	585	jump->index = 0;
	586	else
	587	jump->index = list_entry(head->prev, struct jump_key,
	588	entries)->index + 1;
	589
	590	list_add_tail(&jump->entries, head);
	591	}
	592
	593	if (i > 0) {
	594	str_printf(r, _(" Location:\n"));
	595	for (j = 4; --i >= 0; j += 2) {
	596	menu = submenu[i];
60cd06e1	597	if (jump && menu == location)
0a9064fb MY	598	jump->offset = strlen(r->s);
	599	str_printf(r, "%*c-> %s", j, ' ',
	600	_(menu_get_prompt(menu)));
	601	if (menu->sym) {
	602	str_printf(r, " (%s [=%s])", menu->sym->name ?
	603	menu->sym->name : _("<choice>"),
	604	sym_get_string_value(menu->sym));
	605	}
	606	str_append(r, "\n");
	607	}
	608	}
	609	}
	610
	611	/*
	612	* get property of type P_SYMBOL
	613	*/
	614	static struct property get_symbol_prop(struct symbol sym)
	615	{
	616	struct property *prop = NULL;
	617
	618	for_all_properties(sym, prop, P_SYMBOL)
	619	break;
	620	return prop;
	621	}
	622
bf7ab1e7 MY	623	static void get_symbol_props_str(struct gstr r, struct symbol sym,
	624	enum prop_type tok, const char *prefix)
	625	{
	626	bool hit = false;
	627	struct property *prop;
	628
	629	for_all_properties(sym, prop, tok) {
	630	if (!hit) {
	631	str_append(r, prefix);
	632	hit = true;
	633	} else
	634	str_printf(r, " && ");
	635	expr_gstr_print(prop->expr, r);
	636	}
	637	if (hit)
	638	str_append(r, "\n");
	639	}
	640
0a9064fb MY	641	/*
	642	* head is optional and may be NULL
	643	*/
9b5f0b1d	644	static void get_symbol_str(struct gstr r, struct symbol sym,
0a9064fb MY	645	struct list_head *head)
0a9064fb MY	646	{
0a9064fb MY	647	struct property *prop;
	648
	649	if (sym && sym->name) {
	650	str_printf(r, "Symbol: %s [=%s]\n", sym->name,
	651	sym_get_string_value(sym));
	652	str_printf(r, "Type : %s\n", sym_type_name(sym->type));
	653	if (sym->type == S_INT \|\| sym->type == S_HEX) {
	654	prop = sym_get_range_prop(sym);
	655	if (prop) {
	656	str_printf(r, "Range : ");
	657	expr_gstr_print(prop->expr, r);
	658	str_append(r, "\n");
	659	}
	660	}
	661	}
	662	for_all_prompts(sym, prop)
	663	get_prompt_str(r, prop, head);
	664
	665	prop = get_symbol_prop(sym);
	666	if (prop) {
	667	str_printf(r, _(" Defined at %s:%d\n"), prop->menu->file->name,
	668	prop->menu->lineno);
	669	if (!expr_is_yes(prop->visible.expr)) {
	670	str_append(r, _(" Depends on: "));
	671	expr_gstr_print(prop->visible.expr, r);
	672	str_append(r, "\n");
	673	}
	674	}
	675
bf7ab1e7	676	get_symbol_props_str(r, sym, P_SELECT, _(" Selects: "));
0a9064fb MY	677	if (sym->rev_dep.expr) {
	678	str_append(r, _(" Selected by: "));
	679	expr_gstr_print(sym->rev_dep.expr, r);
	680	str_append(r, "\n");
	681	}
bf7ab1e7 MY	682
	683	get_symbol_props_str(r, sym, P_IMPLY, _(" Implies: "));
	684	if (sym->implied.expr) {
	685	str_append(r, _(" Implied by: "));
	686	expr_gstr_print(sym->implied.expr, r);
	687	str_append(r, "\n");
	688	}
	689
0a9064fb MY	690	str_append(r, "\n\n");
	691	}
	692
	693	struct gstr get_relations_str(struct symbol *sym_arr, struct list_head head)
	694	{
	695	struct symbol *sym;
	696	struct gstr res = str_new();
	697	int i;
	698
	699	for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
	700	get_symbol_str(&res, sym, head);
	701	if (!i)
	702	str_append(&res, _("No matches found.\n"));
	703	return res;
	704	}
	705
	706
	707	void menu_get_ext_help(struct menu menu, struct gstr help)
	708	{
	709	struct symbol *sym = menu->sym;
	710	const char *help_text = nohelp_text;
	711
	712	if (menu_has_help(menu)) {
	713	if (sym->name)
	714	str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
	715	help_text = menu_get_help(menu);
	716	}
	717	str_printf(help, "%s\n", _(help_text));
	718	if (sym)
	719	get_symbol_str(help, sym, NULL);
	720	}