menu.c 14.1 KB
Newer Older
L
Linus Torvalds 已提交
1 2 3 4 5 6 7 8 9 10 11
/*
 * 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"

12
static const char nohelp_text[] = N_(
13
	"There is no help available for this option.\n");
14

L
Linus Torvalds 已提交
15 16 17 18 19 20
struct menu rootmenu;
static struct menu **last_entry_ptr;

struct file *file_list;
struct file *current_file;

21
void menu_warn(struct menu *menu, const char *fmt, ...)
L
Linus Torvalds 已提交
22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
{
	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);
}

41
void _menu_init(void)
L
Linus Torvalds 已提交
42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60
{
	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;
61 62
	if (sym)
		menu_add_symbol(P_SYMBOL, sym, NULL);
L
Linus Torvalds 已提交
63 64 65 66 67 68
}

void menu_end_entry(void)
{
}

69
struct menu *menu_add_menu(void)
L
Linus Torvalds 已提交
70
{
71
	menu_end_entry();
L
Linus Torvalds 已提交
72
	last_entry_ptr = &current_entry->list;
73
	return current_menu = current_entry;
L
Linus Torvalds 已提交
74 75 76 77 78 79 80 81
}

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

T
Trevor Keith 已提交
82
static struct expr *menu_check_dep(struct expr *e)
L
Linus Torvalds 已提交
83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121
{
	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;
	}
122
	menu_warn(current_entry, "type of '%s' redefined from '%s' to '%s'",
L
Linus Torvalds 已提交
123 124 125 126 127 128 129 130 131 132 133 134 135
	    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) {
136 137 138 139 140
		if (isspace(*prompt)) {
			prop_warn(prop, "leading whitespace ignored");
			while (isspace(*prompt))
				prompt++;
		}
141
		if (current_entry->prompt && current_entry != &rootmenu)
142
			prop_warn(prop, "prompt redefined");
L
Linus Torvalds 已提交
143 144
		current_entry->prompt = prop;
	}
145
	prop->text = prompt;
L
Linus Torvalds 已提交
146 147 148 149

	return prop;
}

150
struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
L
Linus Torvalds 已提交
151
{
152
	return menu_add_prop(type, prompt, NULL, dep);
L
Linus Torvalds 已提交
153 154 155 156 157 158 159 160 161 162 163 164
}

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);
}

165 166
void menu_add_option(int token, char *arg)
{
167 168 169 170 171 172 173 174 175 176 177 178 179
	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;
180 181 182
	case T_OPT_ENV:
		prop_add_env(arg);
		break;
183
	}
184 185
}

186 187 188 189 190 191
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));
}

T
Trevor Keith 已提交
192
static void sym_check_prop(struct symbol *sym)
L
Linus Torvalds 已提交
193 194 195 196 197 198 199 200 201
{
	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,
L
Li Zefan 已提交
202
				    "default for config symbol '%s'"
L
Linus Torvalds 已提交
203 204 205 206 207 208 209 210
				    " 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);
211 212 213
			else if (sym2->type != S_UNKNOWN &&
			         sym2->type != S_BOOLEAN &&
			         sym2->type != S_TRISTATE)
L
Linus Torvalds 已提交
214 215 216 217 218 219 220 221 222
				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");
223 224
			if (!menu_range_valid_sym(sym, prop->expr->left.sym) ||
			    !menu_range_valid_sym(sym, prop->expr->right.sym))
L
Linus Torvalds 已提交
225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242
				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)) {
R
Roman Zippel 已提交
243 244 245 246 247
			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) {
248
						menu_set_type(menu->sym->type);
R
Roman Zippel 已提交
249 250
						break;
					}
L
Linus Torvalds 已提交
251 252
				}
			}
R
Roman Zippel 已提交
253 254 255 256 257 258
			/* 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);
			}
L
Linus Torvalds 已提交
259 260 261 262 263 264 265 266
			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);
267
			basedep = expr_alloc_and(expr_copy(parentdep), basedep);
L
Linus Torvalds 已提交
268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322
			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;
		}
323 324

		sym->dir_dep.expr = parent->dep;
L
Linus Torvalds 已提交
325 326
	}
	for (menu = parent->list; menu; menu = menu->next) {
R
Roman Zippel 已提交
327 328 329
		if (sym && sym_is_choice(sym) &&
		    menu->sym && !sym_is_choice_value(menu->sym)) {
			current_entry = menu;
L
Linus Torvalds 已提交
330 331 332 333 334 335
			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 "
R
Roman Zippel 已提交
336 337 338 339 340 341
						  "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");
L
Linus Torvalds 已提交
342
			}
343 344 345 346
			/* 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-
R
Roman Zippel 已提交
347 348
			 * propagated.
			 */
349 350
			if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
				basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
R
Roman Zippel 已提交
351
				menu->dep = expr_alloc_and(basedep, menu->dep);
352 353 354
				for (prop = menu->sym->prop; prop; prop = prop->next) {
					if (prop->menu != menu)
						continue;
R
Roman Zippel 已提交
355 356
					prop->visible.expr = expr_alloc_and(expr_copy(basedep),
									    prop->visible.expr);
357 358
				}
			}
L
Linus Torvalds 已提交
359 360 361 362
			menu_add_symbol(P_CHOICE, sym, NULL);
			prop = sym_get_choice_prop(sym);
			for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
				;
363
			*ep = expr_alloc_one(E_LIST, NULL);
L
Linus Torvalds 已提交
364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379
			(*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)
380
			menu_warn(parent, "config symbol defined without type");
L
Linus Torvalds 已提交
381 382

		if (sym_is_choice(sym) && !parent->prompt)
383
			menu_warn(parent, "choice must have a prompt");
L
Linus Torvalds 已提交
384 385 386 387 388 389 390 391 392 393 394 395 396

		/* 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)));
	}
}

397 398 399 400 401 402 403
bool menu_has_prompt(struct menu *menu)
{
	if (!menu->prompt)
		return false;
	return true;
}

L
Linus Torvalds 已提交
404 405 406 407 408 409 410 411
bool menu_is_visible(struct menu *menu)
{
	struct menu *child;
	struct symbol *sym;
	tristate visible;

	if (!menu->prompt)
		return false;
412

L
Linus Torvalds 已提交
413 414 415 416 417 418 419 420 421
	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;
422

L
Linus Torvalds 已提交
423 424 425
	if (!sym || sym_get_tristate_value(menu->sym) == no)
		return false;

426 427 428 429
	for (child = menu->list; child; child = child->next) {
		if (menu_is_visible(child)) {
			if (sym)
				sym->flags |= SYMBOL_DEF_USER;
L
Linus Torvalds 已提交
430
			return true;
431 432
		}
	}
433

L
Linus Torvalds 已提交
434 435 436 437 438 439
	return false;
}

const char *menu_get_prompt(struct menu *menu)
{
	if (menu->prompt)
E
EGRY Gabor 已提交
440
		return menu->prompt->text;
L
Linus Torvalds 已提交
441
	else if (menu->sym)
E
EGRY Gabor 已提交
442
		return menu->sym->name;
L
Linus Torvalds 已提交
443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462
	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;
}

463 464 465 466 467 468 469 470 471 472 473 474
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 "";
}
475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511

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;

512
	if (sym && sym->name) {
513 514
		str_printf(r, "Symbol: %s [=%s]\n", sym->name,
			   sym_get_string_value(sym));
515
		str_printf(r, "Type  : %s\n", sym_type_name(sym->type));
516 517 518 519 520 521 522 523
		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");
			}
		}
524
	}
525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545
	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");
}

546 547 548 549 550 551 552 553 554 555 556 557 558 559
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;
}


560 561 562 563 564 565
void menu_get_ext_help(struct menu *menu, struct gstr *help)
{
	struct symbol *sym = menu->sym;

	if (menu_has_help(menu)) {
		if (sym->name) {
566
			str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
567 568 569 570 571 572
			str_append(help, _(menu_get_help(menu)));
			str_append(help, "\n");
		}
	} else {
		str_append(help, nohelp_text);
	}
573 574
	if (sym)
		get_symbol_str(help, sym);
575
}