scripts/kconfig/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_SELECT
  80 %token T_SOURCE
  81 %token T_STRING
  82 %token T_TRISTATE
  83 %token T_VISIBLE
  84 %token T_EOL
  85 %token <string> T_ASSIGN_VAL
  86
  87 %left T_OR
  88 %left T_AND
  89 %left T_EQUAL T_UNEQUAL
  90 %left T_LESS T_LESS_EQUAL T_GREATER T_GREATER_EQUAL
  91 %nonassoc T_NOT
  92
  93 %type <symbol> nonconst_symbol
  94 %type <symbol> symbol
  95 %type <type> type logic_type default
  96 %type <expr> expr
  97 %type <expr> if_expr
  98 %type <string> end
  99 %type <menu> if_entry menu_entry choice_entry
 100 %type <string> word_opt assign_val
 101 %type <flavor> assign_op
 102
 103 %destructor {
 104         fprintf(stderr, "%s:%d: missing end statement for this entry\n",
 105                 $$->file->name, $$->lineno);
 106         if (current_menu == $$)
 107                 menu_end_menu();
 108 } if_entry menu_entry choice_entry
 109
 110 %%
 111 input: mainmenu_stmt stmt_list | stmt_list;
 112
 113 /* mainmenu entry */
 114
 115 mainmenu_stmt: T_MAINMENU T_WORD_QUOTE T_EOL
 116 {
 117         menu_add_prompt(P_MENU, $2, NULL);
 118 };
 119
 120 stmt_list:
 121           /* empty */
 122         | stmt_list assignment_stmt
 123         | stmt_list choice_stmt
 124         | stmt_list comment_stmt
 125         | stmt_list config_stmt
 126         | stmt_list if_stmt
 127         | stmt_list menu_stmt
 128         | stmt_list menuconfig_stmt
 129         | stmt_list source_stmt
 130         | stmt_list T_WORD error T_EOL  { zconf_error("unknown statement \"%s\"", $2); }
 131         | stmt_list error T_EOL         { zconf_error("invalid statement"); }
 132 ;
 133
 134 stmt_list_in_choice:
 135           /* empty */
 136         | stmt_list_in_choice comment_stmt
 137         | stmt_list_in_choice config_stmt
 138         | stmt_list_in_choice if_stmt_in_choice
 139         | stmt_list_in_choice error T_EOL       { zconf_error("invalid statement"); }
 140 ;
 141
 142 /* config/menuconfig entry */
 143
 144 config_entry_start: T_CONFIG nonconst_symbol T_EOL
 145 {
 146         $2->flags |= SYMBOL_OPTIONAL;
 147         menu_add_entry($2);
 148         printd(DEBUG_PARSE, "%s:%d:config %s\n", zconf_curname(), zconf_lineno(), $2->name);
 149 };
 150
 151 config_stmt: config_entry_start config_option_list
 152 {
 153         printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
 154 };
 155
 156 menuconfig_entry_start: T_MENUCONFIG nonconst_symbol T_EOL
 157 {
 158         $2->flags |= SYMBOL_OPTIONAL;
 159         menu_add_entry($2);
 160         printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", zconf_curname(), zconf_lineno(), $2->name);
 161 };
 162
 163 menuconfig_stmt: menuconfig_entry_start config_option_list
 164 {
 165         if (current_entry->prompt)
 166                 current_entry->prompt->type = P_MENU;
 167         else
 168                 zconfprint("warning: menuconfig statement without prompt");
 169         printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
 170 };
 171
 172 config_option_list:
 173           /* empty */
 174         | config_option_list config_option
 175         | config_option_list depends
 176         | config_option_list help
 177 ;
 178
 179 config_option: type prompt_stmt_opt T_EOL
 180 {
 181         menu_set_type($1);
 182         printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
 183                 zconf_curname(), zconf_lineno(),
 184                 $1);
 185 };
 186
 187 config_option: T_PROMPT T_WORD_QUOTE if_expr T_EOL
 188 {
 189         menu_add_prompt(P_PROMPT, $2, $3);
 190         printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
 191 };
 192
 193 config_option: default expr if_expr T_EOL
 194 {
 195         menu_add_expr(P_DEFAULT, $2, $3);
 196         if ($1 != S_UNKNOWN)
 197                 menu_set_type($1);
 198         printd(DEBUG_PARSE, "%s:%d:default(%u)\n",
 199                 zconf_curname(), zconf_lineno(),
 200                 $1);
 201 };
 202
 203 config_option: T_SELECT nonconst_symbol if_expr T_EOL
 204 {
 205         menu_add_symbol(P_SELECT, $2, $3);
 206         printd(DEBUG_PARSE, "%s:%d:select\n", zconf_curname(), zconf_lineno());
 207 };
 208
 209 config_option: T_IMPLY nonconst_symbol if_expr T_EOL
 210 {
 211         menu_add_symbol(P_IMPLY, $2, $3);
 212         printd(DEBUG_PARSE, "%s:%d:imply\n", zconf_curname(), zconf_lineno());
 213 };
 214
 215 config_option: T_RANGE symbol symbol if_expr T_EOL
 216 {
 217         menu_add_expr(P_RANGE, expr_alloc_comp(E_RANGE,$2, $3), $4);
 218         printd(DEBUG_PARSE, "%s:%d:range\n", zconf_curname(), zconf_lineno());
 219 };
 220
 221 config_option: T_OPTION T_MODULES T_EOL
 222 {
 223         menu_add_option_modules();
 224 };
 225
 226 config_option: T_OPTION T_DEFCONFIG_LIST T_EOL
 227 {
 228         menu_add_option_defconfig_list();
 229 };
 230
 231 config_option: T_OPTION T_ALLNOCONFIG_Y T_EOL
 232 {
 233         menu_add_option_allnoconfig_y();
 234 };
 235
 236 /* choice entry */
 237
 238 choice: T_CHOICE word_opt T_EOL
 239 {
 240         struct symbol *sym = sym_lookup($2, SYMBOL_CHOICE);
 241         sym->flags |= SYMBOL_NO_WRITE;
 242         menu_add_entry(sym);
 243         menu_add_expr(P_CHOICE, NULL, NULL);
 244         free($2);
 245         printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
 246 };
 247
 248 choice_entry: choice choice_option_list
 249 {
 250         $$ = menu_add_menu();
 251 };
 252
 253 choice_end: end
 254 {
 255         if (zconf_endtoken($1, "choice")) {
 256                 menu_end_menu();
 257                 printd(DEBUG_PARSE, "%s:%d:endchoice\n", zconf_curname(), zconf_lineno());
 258         }
 259 };
 260
 261 choice_stmt: choice_entry stmt_list_in_choice choice_end
 262 ;
 263
 264 choice_option_list:
 265           /* empty */
 266         | choice_option_list choice_option
 267         | choice_option_list depends
 268         | choice_option_list help
 269 ;
 270
 271 choice_option: T_PROMPT T_WORD_QUOTE if_expr T_EOL
 272 {
 273         menu_add_prompt(P_PROMPT, $2, $3);
 274         printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
 275 };
 276
 277 choice_option: logic_type prompt_stmt_opt T_EOL
 278 {
 279         menu_set_type($1);
 280         printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
 281                zconf_curname(), zconf_lineno(), $1);
 282 };
 283
 284 choice_option: T_OPTIONAL T_EOL
 285 {
 286         current_entry->sym->flags |= SYMBOL_OPTIONAL;
 287         printd(DEBUG_PARSE, "%s:%d:optional\n", zconf_curname(), zconf_lineno());
 288 };
 289
 290 choice_option: T_DEFAULT nonconst_symbol if_expr T_EOL
 291 {
 292         menu_add_symbol(P_DEFAULT, $2, $3);
 293         printd(DEBUG_PARSE, "%s:%d:default\n",
 294                zconf_curname(), zconf_lineno());
 295 };
 296
 297 type:
 298           logic_type
 299         | T_INT                 { $$ = S_INT; }
 300         | T_HEX                 { $$ = S_HEX; }
 301         | T_STRING              { $$ = S_STRING; }
 302
 303 logic_type:
 304           T_BOOL                { $$ = S_BOOLEAN; }
 305         | T_TRISTATE            { $$ = S_TRISTATE; }
 306
 307 default:
 308           T_DEFAULT             { $$ = S_UNKNOWN; }
 309         | T_DEF_BOOL            { $$ = S_BOOLEAN; }
 310         | T_DEF_TRISTATE        { $$ = S_TRISTATE; }
 311
 312 /* if entry */
 313
 314 if_entry: T_IF expr T_EOL
 315 {
 316         printd(DEBUG_PARSE, "%s:%d:if\n", zconf_curname(), zconf_lineno());
 317         menu_add_entry(NULL);
 318         menu_add_dep($2);
 319         $$ = menu_add_menu();
 320 };
 321
 322 if_end: end
 323 {
 324         if (zconf_endtoken($1, "if")) {
 325                 menu_end_menu();
 326                 printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
 327         }
 328 };
 329
 330 if_stmt: if_entry stmt_list if_end
 331 ;
 332
 333 if_stmt_in_choice: if_entry stmt_list_in_choice if_end
 334 ;
 335
 336 /* menu entry */
 337
 338 menu: T_MENU T_WORD_QUOTE T_EOL
 339 {
 340         menu_add_entry(NULL);
 341         menu_add_prompt(P_MENU, $2, NULL);
 342         printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
 343 };
 344
 345 menu_entry: menu menu_option_list
 346 {
 347         $$ = menu_add_menu();
 348 };
 349
 350 menu_end: end
 351 {
 352         if (zconf_endtoken($1, "menu")) {
 353                 menu_end_menu();
 354                 printd(DEBUG_PARSE, "%s:%d:endmenu\n", zconf_curname(), zconf_lineno());
 355         }
 356 };
 357
 358 menu_stmt: menu_entry stmt_list menu_end
 359 ;
 360
 361 menu_option_list:
 362           /* empty */
 363         | menu_option_list visible
 364         | menu_option_list depends
 365 ;
 366
 367 source_stmt: T_SOURCE T_WORD_QUOTE T_EOL
 368 {
 369         printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2);
 370         zconf_nextfile($2);
 371         free($2);
 372 };
 373
 374 /* comment entry */
 375
 376 comment: T_COMMENT T_WORD_QUOTE T_EOL
 377 {
 378         menu_add_entry(NULL);
 379         menu_add_prompt(P_COMMENT, $2, NULL);
 380         printd(DEBUG_PARSE, "%s:%d:comment\n", zconf_curname(), zconf_lineno());
 381 };
 382
 383 comment_stmt: comment comment_option_list
 384 ;
 385
 386 comment_option_list:
 387           /* empty */
 388         | comment_option_list depends
 389 ;
 390
 391 /* help option */
 392
 393 help_start: T_HELP T_EOL
 394 {
 395         printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno());
 396         zconf_starthelp();
 397 };
 398
 399 help: help_start T_HELPTEXT
 400 {
 401         if (current_entry->help) {
 402                 free(current_entry->help);
 403                 zconfprint("warning: '%s' defined with more than one help text -- only the last one will be used",
 404                            current_entry->sym->name ?: "<choice>");
 405         }
 406
 407         /* Is the help text empty or all whitespace? */
 408         if ($2[strspn($2, " \f\n\r\t\v")] == '\0')
 409                 zconfprint("warning: '%s' defined with blank help text",
 410                            current_entry->sym->name ?: "<choice>");
 411
 412         current_entry->help = $2;
 413 };
 414
 415 /* depends option */
 416
 417 depends: T_DEPENDS T_ON expr T_EOL
 418 {
 419         menu_add_dep($3);
 420         printd(DEBUG_PARSE, "%s:%d:depends on\n", zconf_curname(), zconf_lineno());
 421 };
 422
 423 /* visibility option */
 424 visible: T_VISIBLE if_expr T_EOL
 425 {
 426         menu_add_visibility($2);
 427 };
 428
 429 /* prompt statement */
 430
 431 prompt_stmt_opt:
 432           /* empty */
 433         | T_WORD_QUOTE if_expr
 434 {
 435         menu_add_prompt(P_PROMPT, $1, $2);
 436 };
 437
 438 end:      T_ENDMENU T_EOL       { $$ = "menu"; }
 439         | T_ENDCHOICE T_EOL     { $$ = "choice"; }
 440         | T_ENDIF T_EOL         { $$ = "if"; }
 441 ;
 442
 443 if_expr:  /* empty */                   { $$ = NULL; }
 444         | T_IF expr                     { $$ = $2; }
 445 ;
 446
 447 expr:     symbol                                { $$ = expr_alloc_symbol($1); }
 448         | symbol T_LESS symbol                  { $$ = expr_alloc_comp(E_LTH, $1, $3); }
 449         | symbol T_LESS_EQUAL symbol            { $$ = expr_alloc_comp(E_LEQ, $1, $3); }
 450         | symbol T_GREATER symbol               { $$ = expr_alloc_comp(E_GTH, $1, $3); }
 451         | symbol T_GREATER_EQUAL symbol         { $$ = expr_alloc_comp(E_GEQ, $1, $3); }
 452         | symbol T_EQUAL symbol                 { $$ = expr_alloc_comp(E_EQUAL, $1, $3); }
 453         | symbol T_UNEQUAL symbol               { $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); }
 454         | T_OPEN_PAREN expr T_CLOSE_PAREN       { $$ = $2; }
 455         | T_NOT expr                            { $$ = expr_alloc_one(E_NOT, $2); }
 456         | expr T_OR expr                        { $$ = expr_alloc_two(E_OR, $1, $3); }
 457         | expr T_AND expr                       { $$ = expr_alloc_two(E_AND, $1, $3); }
 458 ;
 459
 460 /* For symbol definitions, selects, etc., where quotes are not accepted */
 461 nonconst_symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); };
 462
 463 symbol:   nonconst_symbol
 464         | T_WORD_QUOTE  { $$ = sym_lookup($1, SYMBOL_CONST); free($1); }
 465 ;
 466
 467 word_opt: /* empty */                   { $$ = NULL; }
 468         | T_WORD
 469
 470 /* assignment statement */
 471
 472 assignment_stmt:  T_WORD assign_op assign_val T_EOL     { variable_add($1, $3, $2); free($1); free($3); }
 473
 474 assign_op:
 475           T_EQUAL       { $$ = VAR_RECURSIVE; }
 476         | T_COLON_EQUAL { $$ = VAR_SIMPLE; }
 477         | T_PLUS_EQUAL  { $$ = VAR_APPEND; }
 478 ;
 479
 480 assign_val:
 481         /* empty */             { $$ = xstrdup(""); };
 482         | T_ASSIGN_VAL
 483 ;
 484
 485 %%
 486
 487 void conf_parse(const char *name)
 488 {
 489         struct symbol *sym;
 490         int i;
 491
 492         zconf_initscan(name);
 493
 494         _menu_init();
 495
 496         if (getenv("ZCONF_DEBUG"))
 497                 yydebug = 1;
 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"