scripts/config/parser.y

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
   4  */
   5 %{
   6
   7 #include <ctype.h>
   8 #include <stdarg.h>
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12 #include <stdbool.h>
  13
  14 #include "lkc.h"
  15
  16 #define printd(mask, fmt...) if (cdebug & (mask)) printf(fmt)
  17
  18 #define PRINTD          0x0001
  19 #define DEBUG_PARSE     0x0002
  20
  21 int cdebug = PRINTD;
  22
  23 static void yyerror(const char *err);
  24 static void zconfprint(const char *err, ...);
  25 static void zconf_error(const char *err, ...);
  26 static bool zconf_endtoken(const char *tokenname,
  27                            const char *expected_tokenname);
  28
  29 struct symbol *symbol_hash[SYMBOL_HASHSIZE];
  30
  31 static struct menu *current_menu, *current_entry;
  32
  33 %}
  34
  35 %union
  36 {
  37         char *string;
  38         struct symbol *symbol;
  39         struct expr *expr;
  40         struct menu *menu;
  41         enum symbol_type type;
  42         enum variable_flavor flavor;
  43 }
  44
  45 %token <string> T_HELPTEXT
  46 %token <string> T_WORD
  47 %token <string> T_WORD_QUOTE
  48 %token T_ALLNOCONFIG_Y
  49 %token T_BOOL
  50 %token T_CHOICE
  51 %token T_CLOSE_PAREN
  52 %token T_COLON_EQUAL
  53 %token T_COMMENT
  54 %token T_CONFIG
  55 %token T_DEFAULT
  56 %token T_DEFCONFIG_LIST
  57 %token T_DEF_BOOL
  58 %token T_DEF_TRISTATE
  59 %token T_DEPENDS
  60 %token T_ENDCHOICE
  61 %token T_ENDIF
  62 %token T_ENDMENU
  63 %token T_HELP
  64 %token T_HEX
  65 %token T_IF
  66 %token T_IMPLY
  67 %token T_INT
  68 %token T_MAINMENU
  69 %token T_MENU
  70 %token T_MENUCONFIG
  71 %token T_MODULES
  72 %token T_ON
  73 %token T_OPEN_PAREN
  74 %token T_OPTION
  75 %token T_OPTIONAL
  76 %token T_PLUS_EQUAL
  77 %token T_PROMPT
  78 %token T_RANGE
  79 %token T_RESET
  80 %token T_SELECT
  81 %token T_SOURCE
  82 %token T_STRING
  83 %token T_TRISTATE
  84 %token T_VISIBLE
  85 %token T_EOL
  86 %token <string> T_ASSIGN_VAL
  87
  88 %left T_OR
  89 %left T_AND
  90 %left T_EQUAL T_UNEQUAL
  91 %left T_LESS T_LESS_EQUAL T_GREATER T_GREATER_EQUAL
  92 %nonassoc T_NOT
  93
  94 %type <symbol> nonconst_symbol
  95 %type <symbol> symbol
  96 %type <type> type logic_type default
  97 %type <expr> expr
  98 %type <expr> if_expr
  99 %type <string> end
 100 %type <menu> if_entry menu_entry choice_entry
 101 %type <string> word_opt assign_val
 102 %type <flavor> assign_op
 103
 104 %destructor {
 105         fprintf(stderr, "%s:%d: missing end statement for this entry\n",
 106                 $$->file->name, $$->lineno);
 107         if (current_menu == $$)
 108                 menu_end_menu();
 109 } if_entry menu_entry choice_entry
 110
 111 %%
 112 input: mainmenu_stmt stmt_list | stmt_list;
 113
 114 /* mainmenu entry */
 115
 116 mainmenu_stmt: T_MAINMENU T_WORD_QUOTE T_EOL
 117 {
 118         menu_add_prompt(P_MENU, $2, NULL);
 119 };
 120
 121 stmt_list:
 122           /* empty */
 123         | stmt_list common_stmt
 124         | stmt_list choice_stmt
 125         | stmt_list menu_stmt
 126         | stmt_list T_WORD error T_EOL  { zconf_error("unknown statement \"%s\"", $2); }
 127         | stmt_list error T_EOL         { zconf_error("invalid statement"); }
 128 ;
 129
 130 common_stmt:
 131           if_stmt
 132         | comment_stmt
 133         | config_stmt
 134         | menuconfig_stmt
 135         | source_stmt
 136         | assignment_stmt
 137 ;
 138
 139 /* config/menuconfig entry */
 140
 141 config_entry_start: T_CONFIG nonconst_symbol T_EOL
 142 {
 143         $2->flags |= SYMBOL_OPTIONAL;
 144         menu_add_entry($2);
 145         printd(DEBUG_PARSE, "%s:%d:config %s\n", zconf_curname(), zconf_lineno(), $2->name);
 146 };
 147
 148 config_stmt: config_entry_start config_option_list
 149 {
 150         printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
 151 };
 152
 153 menuconfig_entry_start: T_MENUCONFIG nonconst_symbol T_EOL
 154 {
 155         $2->flags |= SYMBOL_OPTIONAL;
 156         menu_add_entry($2);
 157         printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", zconf_curname(), zconf_lineno(), $2->name);
 158 };
 159
 160 menuconfig_stmt: menuconfig_entry_start config_option_list
 161 {
 162         if (current_entry->prompt)
 163                 current_entry->prompt->type = P_MENU;
 164         else
 165                 zconfprint("warning: menuconfig statement without prompt");
 166         printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
 167 };
 168
 169 config_option_list:
 170           /* empty */
 171         | config_option_list config_option
 172         | config_option_list depends
 173         | config_option_list help
 174 ;
 175
 176 config_option: type prompt_stmt_opt T_EOL
 177 {
 178         menu_set_type($1);
 179         printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
 180                 zconf_curname(), zconf_lineno(),
 181                 $1);
 182 };
 183
 184 config_option: T_PROMPT T_WORD_QUOTE if_expr T_EOL
 185 {
 186         menu_add_prompt(P_PROMPT, $2, $3);
 187         printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
 188 };
 189
 190 config_option: default expr if_expr T_EOL
 191 {
 192         menu_add_expr(P_DEFAULT, $2, $3);
 193         if ($1 != S_UNKNOWN)
 194                 menu_set_type($1);
 195         printd(DEBUG_PARSE, "%s:%d:default(%u)\n",
 196                 zconf_curname(), zconf_lineno(),
 197                 $1);
 198 };
 199
 200 config_option: T_SELECT nonconst_symbol if_expr T_EOL
 201 {
 202         menu_add_symbol(P_SELECT, $2, $3);
 203         printd(DEBUG_PARSE, "%s:%d:select\n", zconf_curname(), zconf_lineno());
 204 };
 205
 206 config_option: T_IMPLY nonconst_symbol if_expr T_EOL
 207 {
 208         menu_add_symbol(P_IMPLY, $2, $3);
 209         printd(DEBUG_PARSE, "%s:%d:imply\n", zconf_curname(), zconf_lineno());
 210 };
 211
 212 config_option: T_RANGE symbol symbol if_expr T_EOL
 213 {
 214         menu_add_expr(P_RANGE, expr_alloc_comp(E_RANGE,$2, $3), $4);
 215         printd(DEBUG_PARSE, "%s:%d:range\n", zconf_curname(), zconf_lineno());
 216 };
 217
 218 config_option: T_OPTION T_MODULES T_EOL
 219 {
 220         menu_add_option_modules();
 221 };
 222
 223 config_option: T_OPTION T_DEFCONFIG_LIST T_EOL
 224 {
 225         menu_add_option_defconfig_list();
 226 };
 227
 228 config_option: T_OPTION T_ALLNOCONFIG_Y T_EOL
 229 {
 230         menu_add_option_allnoconfig_y();
 231 };
 232
 233 /* choice entry */
 234
 235 choice: T_CHOICE word_opt T_EOL
 236 {
 237         struct symbol *sym = sym_lookup($2, SYMBOL_CHOICE);
 238         sym->flags |= SYMBOL_NO_WRITE;
 239         menu_add_entry(sym);
 240         menu_add_expr(P_CHOICE, NULL, NULL);
 241         free($2);
 242         printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
 243 };
 244
 245 choice_entry: choice choice_option_list
 246 {
 247         $$ = menu_add_menu();
 248 };
 249
 250 choice_end: end
 251 {
 252         if (zconf_endtoken($1, "choice")) {
 253                 menu_end_menu();
 254                 printd(DEBUG_PARSE, "%s:%d:endchoice\n", zconf_curname(), zconf_lineno());
 255         }
 256 };
 257
 258 choice_stmt: choice_entry choice_block choice_end
 259 ;
 260
 261 choice_option_list:
 262           /* empty */
 263         | choice_option_list choice_option
 264         | choice_option_list depends
 265         | choice_option_list help
 266 ;
 267
 268 choice_option: T_PROMPT T_WORD_QUOTE if_expr T_EOL
 269 {
 270         menu_add_prompt(P_PROMPT, $2, $3);
 271         printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
 272 };
 273
 274 choice_option: logic_type prompt_stmt_opt T_EOL
 275 {
 276         menu_set_type($1);
 277         printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
 278                zconf_curname(), zconf_lineno(), $1);
 279 };
 280
 281 choice_option: T_OPTIONAL T_EOL
 282 {
 283         current_entry->sym->flags |= SYMBOL_OPTIONAL;
 284         printd(DEBUG_PARSE, "%s:%d:optional\n", zconf_curname(), zconf_lineno());
 285 };
 286
 287 choice_option: T_RESET if_expr T_EOL
 288 {
 289         menu_add_prop(P_RESET, NULL, $2);
 290 };
 291
 292 choice_option: T_DEFAULT nonconst_symbol if_expr T_EOL
 293 {
 294         menu_add_symbol(P_DEFAULT, $2, $3);
 295         printd(DEBUG_PARSE, "%s:%d:default\n",
 296                zconf_curname(), zconf_lineno());
 297 };
 298
 299 type:
 300           logic_type
 301         | T_INT                 { $$ = S_INT; }
 302         | T_HEX                 { $$ = S_HEX; }
 303         | T_STRING              { $$ = S_STRING; }
 304
 305 logic_type:
 306           T_BOOL                { $$ = S_BOOLEAN; }
 307         | T_TRISTATE            { $$ = S_TRISTATE; }
 308
 309 default:
 310           T_DEFAULT             { $$ = S_UNKNOWN; }
 311         | T_DEF_BOOL            { $$ = S_BOOLEAN; }
 312         | T_DEF_TRISTATE        { $$ = S_TRISTATE; }
 313
 314 choice_block:
 315           /* empty */
 316         | choice_block common_stmt
 317 ;
 318
 319 /* if entry */
 320
 321 if_entry: T_IF expr T_EOL
 322 {
 323         printd(DEBUG_PARSE, "%s:%d:if\n", zconf_curname(), zconf_lineno());
 324         menu_add_entry(NULL);
 325         menu_add_dep($2);
 326         $$ = menu_add_menu();
 327 };
 328
 329 if_end: end
 330 {
 331         if (zconf_endtoken($1, "if")) {
 332                 menu_end_menu();
 333                 printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
 334         }
 335 };
 336
 337 if_stmt: if_entry stmt_list if_end
 338 ;
 339
 340 /* menu entry */
 341
 342 menu: T_MENU T_WORD_QUOTE T_EOL
 343 {
 344         menu_add_entry(NULL);
 345         menu_add_prompt(P_MENU, $2, NULL);
 346         printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
 347 };
 348
 349 menu_entry: menu menu_option_list
 350 {
 351         $$ = menu_add_menu();
 352 };
 353
 354 menu_end: end
 355 {
 356         if (zconf_endtoken($1, "menu")) {
 357                 menu_end_menu();
 358                 printd(DEBUG_PARSE, "%s:%d:endmenu\n", zconf_curname(), zconf_lineno());
 359         }
 360 };
 361
 362 menu_stmt: menu_entry stmt_list menu_end
 363 ;
 364
 365 menu_option_list:
 366           /* empty */
 367         | menu_option_list visible
 368         | menu_option_list depends
 369 ;
 370
 371 source_stmt: T_SOURCE T_WORD_QUOTE T_EOL
 372 {
 373         printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2);
 374         zconf_nextfile($2);
 375         free($2);
 376 };
 377
 378 /* comment entry */
 379
 380 comment: T_COMMENT T_WORD_QUOTE T_EOL
 381 {
 382         menu_add_entry(NULL);
 383         menu_add_prompt(P_COMMENT, $2, NULL);
 384         printd(DEBUG_PARSE, "%s:%d:comment\n", zconf_curname(), zconf_lineno());
 385 };
 386
 387 comment_stmt: comment comment_option_list
 388 ;
 389
 390 comment_option_list:
 391           /* empty */
 392         | comment_option_list depends
 393 ;
 394
 395 /* help option */
 396
 397 help_start: T_HELP T_EOL
 398 {
 399         printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno());
 400         zconf_starthelp();
 401 };
 402
 403 help: help_start T_HELPTEXT
 404 {
 405         /* Is the help text empty or all whitespace? */
 406         if ($2[strspn($2, " \f\n\r\t\v")] == '\0')
 407                 zconfprint("warning: '%s' defined with blank help text",
 408                            current_entry->sym->name ?: "<choice>");
 409
 410         current_entry->help = $2;
 411 };
 412
 413 /* depends option */
 414
 415 depends: T_DEPENDS T_ON expr T_EOL
 416 {
 417         menu_add_dep($3);
 418         printd(DEBUG_PARSE, "%s:%d:depends on\n", zconf_curname(), zconf_lineno());
 419 };
 420
 421 /* visibility option */
 422 visible: T_VISIBLE if_expr T_EOL
 423 {
 424         menu_add_visibility($2);
 425 };
 426
 427 /* prompt statement */
 428
 429 prompt_stmt_opt:
 430           /* empty */
 431         | T_WORD_QUOTE if_expr
 432 {
 433         menu_add_prompt(P_PROMPT, $1, $2);
 434 };
 435
 436 end:      T_ENDMENU T_EOL       { $$ = "menu"; }
 437         | T_ENDCHOICE T_EOL     { $$ = "choice"; }
 438         | T_ENDIF T_EOL         { $$ = "if"; }
 439 ;
 440
 441 if_expr:  /* empty */                   { $$ = NULL; }
 442         | T_IF expr                     { $$ = $2; }
 443 ;
 444
 445 expr:     symbol                                { $$ = expr_alloc_symbol($1); }
 446         | symbol T_LESS symbol                  { $$ = expr_alloc_comp(E_LTH, $1, $3); }
 447         | symbol T_LESS_EQUAL symbol            { $$ = expr_alloc_comp(E_LEQ, $1, $3); }
 448         | symbol T_GREATER symbol               { $$ = expr_alloc_comp(E_GTH, $1, $3); }
 449         | symbol T_GREATER_EQUAL symbol         { $$ = expr_alloc_comp(E_GEQ, $1, $3); }
 450         | symbol T_EQUAL symbol                 { $$ = expr_alloc_comp(E_EQUAL, $1, $3); }
 451         | symbol T_UNEQUAL symbol               { $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); }
 452         | T_OPEN_PAREN expr T_CLOSE_PAREN       { $$ = $2; }
 453         | T_NOT expr                            { $$ = expr_alloc_one(E_NOT, $2); }
 454         | expr T_OR expr                        { $$ = expr_alloc_two(E_OR, $1, $3); }
 455         | expr T_AND expr                       { $$ = expr_alloc_two(E_AND, $1, $3); }
 456 ;
 457
 458 /* For symbol definitions, selects, etc., where quotes are not accepted */
 459 nonconst_symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); };
 460
 461 symbol:   nonconst_symbol
 462         | T_WORD_QUOTE  { $$ = sym_lookup($1, SYMBOL_CONST); free($1); }
 463 ;
 464
 465 word_opt: /* empty */                   { $$ = NULL; }
 466         | T_WORD
 467
 468 /* assignment statement */
 469
 470 assignment_stmt:  T_WORD assign_op assign_val T_EOL     { variable_add($1, $3, $2); free($1); free($3); }
 471
 472 assign_op:
 473           T_EQUAL       { $$ = VAR_RECURSIVE; }
 474         | T_COLON_EQUAL { $$ = VAR_SIMPLE; }
 475         | T_PLUS_EQUAL  { $$ = VAR_APPEND; }
 476 ;
 477
 478 assign_val:
 479         /* empty */             { $$ = xstrdup(""); };
 480         | T_ASSIGN_VAL
 481 ;
 482
 483 %%
 484
 485 void conf_parse(const char *name)
 486 {
 487         struct symbol *sym;
 488         int i;
 489
 490         zconf_initscan(name);
 491
 492         _menu_init();
 493
 494 #if YYDEBUG
 495         if (getenv("ZCONF_DEBUG"))
 496                 yydebug = 1;
 497 #endif
 498         yyparse();
 499
 500         /* Variables are expanded in the parse phase. We can free them here. */
 501         variable_all_del();
 502
 503         if (yynerrs)
 504                 exit(1);
 505         if (!modules_sym)
 506                 modules_sym = sym_find( "n" );
 507
 508         if (!menu_has_prompt(&rootmenu)) {
 509                 current_entry = &rootmenu;
 510                 menu_add_prompt(P_MENU, "Main menu", NULL);
 511         }
 512
 513         menu_finalize(&rootmenu);
 514         for_all_symbols(i, sym) {
 515                 if (sym_check_deps(sym))
 516                         yynerrs++;
 517         }
 518         if (yynerrs)
 519                 exit(1);
 520         sym_set_change_count(1);
 521 }
 522
 523 static bool zconf_endtoken(const char *tokenname,
 524                            const char *expected_tokenname)
 525 {
 526         if (strcmp(tokenname, expected_tokenname)) {
 527                 zconf_error("unexpected '%s' within %s block",
 528                             tokenname, expected_tokenname);
 529                 yynerrs++;
 530                 return false;
 531         }
 532         if (current_menu->file != current_file) {
 533                 zconf_error("'%s' in different file than '%s'",
 534                             tokenname, expected_tokenname);
 535                 fprintf(stderr, "%s:%d: location of the '%s'\n",
 536                         current_menu->file->name, current_menu->lineno,
 537                         expected_tokenname);
 538                 yynerrs++;
 539                 return false;
 540         }
 541         return true;
 542 }
 543
 544 static void zconfprint(const char *err, ...)
 545 {
 546         va_list ap;
 547
 548         fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
 549         va_start(ap, err);
 550         vfprintf(stderr, err, ap);
 551         va_end(ap);
 552         fprintf(stderr, "\n");
 553 }
 554
 555 static void zconf_error(const char *err, ...)
 556 {
 557         va_list ap;
 558
 559         yynerrs++;
 560         fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
 561         va_start(ap, err);
 562         vfprintf(stderr, err, ap);
 563         va_end(ap);
 564         fprintf(stderr, "\n");
 565 }
 566
 567 static void yyerror(const char *err)
 568 {
 569         fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
 570 }
 571
 572 static void print_quoted_string(FILE *out, const char *str)
 573 {
 574         const char *p;
 575         int len;
 576
 577         putc('"', out);
 578         while ((p = strchr(str, '"'))) {
 579                 len = p - str;
 580                 if (len)
 581                         fprintf(out, "%.*s", len, str);
 582                 fputs("\\\"", out);
 583                 str = p + 1;
 584         }
 585         fputs(str, out);
 586         putc('"', out);
 587 }
 588
 589 static void print_symbol(FILE *out, struct menu *menu)
 590 {
 591         struct symbol *sym = menu->sym;
 592         struct property *prop;
 593
 594         if (sym_is_choice(sym))
 595                 fprintf(out, "\nchoice\n");
 596         else
 597                 fprintf(out, "\nconfig %s\n", sym->name);
 598         switch (sym->type) {
 599         case S_BOOLEAN:
 600                 fputs("  bool\n", out);
 601                 break;
 602         case S_TRISTATE:
 603                 fputs("  tristate\n", out);
 604                 break;
 605         case S_STRING:
 606                 fputs("  string\n", out);
 607                 break;
 608         case S_INT:
 609                 fputs("  integer\n", out);
 610                 break;
 611         case S_HEX:
 612                 fputs("  hex\n", out);
 613                 break;
 614         default:
 615                 fputs("  ???\n", out);
 616                 break;
 617         }
 618         for (prop = sym->prop; prop; prop = prop->next) {
 619                 if (prop->menu != menu)
 620                         continue;
 621                 switch (prop->type) {
 622                 case P_PROMPT:
 623                         fputs("  prompt ", out);
 624                         print_quoted_string(out, prop->text);
 625                         if (!expr_is_yes(prop->visible.expr)) {
 626                                 fputs(" if ", out);
 627                                 expr_fprint(prop->visible.expr, out);
 628                         }
 629                         fputc('\n', out);
 630                         break;
 631                 case P_DEFAULT:
 632                         fputs( "  default ", out);
 633                         expr_fprint(prop->expr, out);
 634                         if (!expr_is_yes(prop->visible.expr)) {
 635                                 fputs(" if ", out);
 636                                 expr_fprint(prop->visible.expr, out);
 637                         }
 638                         fputc('\n', out);
 639                         break;
 640                 case P_CHOICE:
 641                         fputs("  #choice value\n", out);
 642                         break;
 643                 case P_SELECT:
 644                         fputs( "  select ", out);
 645                         expr_fprint(prop->expr, out);
 646                         fputc('\n', out);
 647                         break;
 648                 case P_IMPLY:
 649                         fputs( "  imply ", out);
 650                         expr_fprint(prop->expr, out);
 651                         fputc('\n', out);
 652                         break;
 653                 case P_RANGE:
 654                         fputs( "  range ", out);
 655                         expr_fprint(prop->expr, out);
 656                         fputc('\n', out);
 657                         break;
 658                 case P_MENU:
 659                         fputs( "  menu ", out);
 660                         print_quoted_string(out, prop->text);
 661                         fputc('\n', out);
 662                         break;
 663                 case P_SYMBOL:
 664                         fputs( "  symbol ", out);
 665                         fprintf(out, "%s\n", prop->menu->sym->name);
 666                         break;
 667                 default:
 668                         fprintf(out, "  unknown prop %d!\n", prop->type);
 669                         break;
 670                 }
 671         }
 672         if (menu->help) {
 673                 int len = strlen(menu->help);
 674                 while (menu->help[--len] == '\n')
 675                         menu->help[len] = 0;
 676                 fprintf(out, "  help\n%s\n", menu->help);
 677         }
 678 }
 679
 680 void zconfdump(FILE *out)
 681 {
 682         struct property *prop;
 683         struct symbol *sym;
 684         struct menu *menu;
 685
 686         menu = rootmenu.list;
 687         while (menu) {
 688                 if ((sym = menu->sym))
 689                         print_symbol(out, menu);
 690                 else if ((prop = menu->prompt)) {
 691                         switch (prop->type) {
 692                         case P_COMMENT:
 693                                 fputs("\ncomment ", out);
 694                                 print_quoted_string(out, prop->text);
 695                                 fputs("\n", out);
 696                                 break;
 697                         case P_MENU:
 698                                 fputs("\nmenu ", out);
 699                                 print_quoted_string(out, prop->text);
 700                                 fputs("\n", out);
 701                                 break;
 702                         default:
 703                                 ;
 704                         }
 705                         if (!expr_is_yes(prop->visible.expr)) {
 706                                 fputs("  depends ", out);
 707                                 expr_fprint(prop->visible.expr, out);
 708                                 fputc('\n', out);
 709                         }
 710                 }
 711
 712                 if (menu->list)
 713                         menu = menu->list;
 714                 else if (menu->next)
 715                         menu = menu->next;
 716                 else while ((menu = menu->parent)) {
 717                         if (menu->prompt && menu->prompt->type == P_MENU)
 718                                 fputs("\nendmenu\n", out);
 719                         if (menu->next) {
 720                                 menu = menu->next;
 721                                 break;
 722                         }
 723                 }
 724         }
 725 }
 726
 727 #include "menu.c"