1%{ 2/* 3 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> 4 * Released under the terms of the GNU GPL v2.0. 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 21int cdebug = PRINTD; 22 23extern int zconflex(void); 24static void zconfprint(const char *err, ...); 25static void zconf_error(const char *err, ...); 26static void zconferror(const char *err); 27static bool zconf_endtoken(const struct kconf_id *id, int starttoken, int endtoken); 28 29struct symbol *symbol_hash[SYMBOL_HASHSIZE]; 30 31static struct menu *current_menu, *current_entry; 32 33%} 34%expect 30 35 36%union 37{ 38 char *string; 39 struct file *file; 40 struct symbol *symbol; 41 struct expr *expr; 42 struct menu *menu; 43 const struct kconf_id *id; 44} 45 46%token <id>T_MAINMENU 47%token <id>T_MENU 48%token <id>T_ENDMENU 49%token <id>T_SOURCE 50%token <id>T_CHOICE 51%token <id>T_ENDCHOICE 52%token <id>T_COMMENT 53%token <id>T_CONFIG 54%token <id>T_MENUCONFIG 55%token <id>T_HELP 56%token <string> T_HELPTEXT 57%token <id>T_IF 58%token <id>T_ENDIF 59%token <id>T_DEPENDS 60%token <id>T_OPTIONAL 61%token <id>T_PROMPT 62%token <id>T_TYPE 63%token <id>T_DEFAULT 64%token <id>T_SELECT 65%token <id>T_RANGE 66%token <id>T_VISIBLE 67%token <id>T_OPTION 68%token <id>T_ON 69%token <string> T_WORD 70%token <string> T_WORD_QUOTE 71%token T_UNEQUAL 72%token T_CLOSE_PAREN 73%token T_OPEN_PAREN 74%token T_EOL 75 76%left T_OR 77%left T_AND 78%left T_EQUAL T_UNEQUAL 79%nonassoc T_NOT 80 81%type <string> prompt 82%type <symbol> symbol 83%type <expr> expr 84%type <expr> if_expr 85%type <id> end 86%type <id> option_name 87%type <menu> if_entry menu_entry choice_entry 88%type <string> symbol_option_arg word_opt 89 90%destructor { 91 fprintf(stderr, "%s:%d: missing end statement for this entry\n", 92 $$->file->name, $$->lineno); 93 if (current_menu == $$) 94 menu_end_menu(); 95} if_entry menu_entry choice_entry 96 97%{ 98/* Include zconf.hash.c here so it can see the token constants. */ 99#include "zconf.hash.c" 100%} 101 102%% 103input: nl start | start; 104 105start: mainmenu_stmt stmt_list | stmt_list; 106 107stmt_list: 108 /* empty */ 109 | stmt_list common_stmt 110 | stmt_list choice_stmt 111 | stmt_list menu_stmt 112 | stmt_list end { zconf_error("unexpected end statement"); } 113 | stmt_list T_WORD error T_EOL { zconf_error("unknown statement \"%s\"", $2); } 114 | stmt_list option_name error T_EOL 115{ 116 zconf_error("unexpected option \"%s\"", kconf_id_strings + $2->name); 117} 118 | stmt_list error T_EOL { zconf_error("invalid statement"); } 119; 120 121option_name: 122 T_DEPENDS | T_PROMPT | T_TYPE | T_SELECT | T_OPTIONAL | T_RANGE | T_DEFAULT | T_VISIBLE 123; 124 125common_stmt: 126 T_EOL 127 | if_stmt 128 | comment_stmt 129 | config_stmt 130 | menuconfig_stmt 131 | source_stmt 132; 133 134option_error: 135 T_WORD error T_EOL { zconf_error("unknown option \"%s\"", $1); } 136 | error T_EOL { zconf_error("invalid option"); } 137; 138 139 140/* config/menuconfig entry */ 141 142config_entry_start: T_CONFIG T_WORD T_EOL 143{ 144 struct symbol *sym = sym_lookup($2, 0); 145 sym->flags |= SYMBOL_OPTIONAL; 146 menu_add_entry(sym); 147 printd(DEBUG_PARSE, "%s:%d:config %s\n", zconf_curname(), zconf_lineno(), $2); 148}; 149 150config_stmt: config_entry_start config_option_list 151{ 152 menu_end_entry(); 153 printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno()); 154}; 155 156menuconfig_entry_start: T_MENUCONFIG T_WORD T_EOL 157{ 158 struct symbol *sym = sym_lookup($2, 0); 159 sym->flags |= SYMBOL_OPTIONAL; 160 menu_add_entry(sym); 161 printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", zconf_curname(), zconf_lineno(), $2); 162}; 163 164menuconfig_stmt: menuconfig_entry_start config_option_list 165{ 166 if (current_entry->prompt) 167 current_entry->prompt->type = P_MENU; 168 else 169 zconfprint("warning: menuconfig statement without prompt"); 170 menu_end_entry(); 171 printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno()); 172}; 173 174config_option_list: 175 /* empty */ 176 | config_option_list config_option 177 | config_option_list symbol_option 178 | config_option_list depends 179 | config_option_list help 180 | config_option_list option_error 181 | config_option_list T_EOL 182; 183 184config_option: T_TYPE prompt_stmt_opt T_EOL 185{ 186 menu_set_type($1->stype); 187 printd(DEBUG_PARSE, "%s:%d:type(%u)\n", 188 zconf_curname(), zconf_lineno(), 189 $1->stype); 190}; 191 192config_option: T_PROMPT prompt if_expr T_EOL 193{ 194 menu_add_prompt(P_PROMPT, $2, $3); 195 printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno()); 196}; 197 198config_option: T_DEFAULT expr if_expr T_EOL 199{ 200 menu_add_expr(P_DEFAULT, $2, $3); 201 if ($1->stype != S_UNKNOWN) 202 menu_set_type($1->stype); 203 printd(DEBUG_PARSE, "%s:%d:default(%u)\n", 204 zconf_curname(), zconf_lineno(), 205 $1->stype); 206}; 207 208config_option: T_SELECT T_WORD if_expr T_EOL 209{ 210 menu_add_symbol(P_SELECT, sym_lookup($2, 0), $3); 211 printd(DEBUG_PARSE, "%s:%d:select\n", zconf_curname(), zconf_lineno()); 212}; 213 214config_option: T_RANGE symbol symbol if_expr T_EOL 215{ 216 menu_add_expr(P_RANGE, expr_alloc_comp(E_RANGE,$2, $3), $4); 217 printd(DEBUG_PARSE, "%s:%d:range\n", zconf_curname(), zconf_lineno()); 218}; 219 220symbol_option: T_OPTION symbol_option_list T_EOL 221; 222 223symbol_option_list: 224 /* empty */ 225 | symbol_option_list T_WORD symbol_option_arg 226{ 227 const struct kconf_id *id = kconf_id_lookup($2, strlen($2)); 228 if (id && id->flags & TF_OPTION) 229 menu_add_option(id->token, $3); 230 else 231 zconfprint("warning: ignoring unknown option %s", $2); 232 free($2); 233}; 234 235symbol_option_arg: 236 /* empty */ { $$ = NULL; } 237 | T_EQUAL prompt { $$ = $2; } 238; 239 240/* choice entry */ 241 242choice: T_CHOICE word_opt T_EOL 243{ 244 struct symbol *sym = sym_lookup($2, SYMBOL_CHOICE); 245 sym->flags |= SYMBOL_AUTO; 246 menu_add_entry(sym); 247 menu_add_expr(P_CHOICE, NULL, NULL); 248 printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno()); 249}; 250 251choice_entry: choice choice_option_list 252{ 253 $$ = menu_add_menu(); 254}; 255 256choice_end: end 257{ 258 if (zconf_endtoken($1, T_CHOICE, T_ENDCHOICE)) { 259 menu_end_menu(); 260 printd(DEBUG_PARSE, "%s:%d:endchoice\n", zconf_curname(), zconf_lineno()); 261 } 262}; 263 264choice_stmt: choice_entry choice_block choice_end 265; 266 267choice_option_list: 268 /* empty */ 269 | choice_option_list choice_option 270 | choice_option_list depends 271 | choice_option_list help 272 | choice_option_list T_EOL 273 | choice_option_list option_error 274; 275 276choice_option: T_PROMPT prompt if_expr T_EOL 277{ 278 menu_add_prompt(P_PROMPT, $2, $3); 279 printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno()); 280}; 281 282choice_option: T_TYPE prompt_stmt_opt T_EOL 283{ 284 if ($1->stype == S_BOOLEAN || $1->stype == S_TRISTATE) { 285 menu_set_type($1->stype); 286 printd(DEBUG_PARSE, "%s:%d:type(%u)\n", 287 zconf_curname(), zconf_lineno(), 288 $1->stype); 289 } else 290 YYERROR; 291}; 292 293choice_option: T_OPTIONAL T_EOL 294{ 295 current_entry->sym->flags |= SYMBOL_OPTIONAL; 296 printd(DEBUG_PARSE, "%s:%d:optional\n", zconf_curname(), zconf_lineno()); 297}; 298 299choice_option: T_DEFAULT T_WORD if_expr T_EOL 300{ 301 if ($1->stype == S_UNKNOWN) { 302 menu_add_symbol(P_DEFAULT, sym_lookup($2, 0), $3); 303 printd(DEBUG_PARSE, "%s:%d:default\n", 304 zconf_curname(), zconf_lineno()); 305 } else 306 YYERROR; 307}; 308 309choice_block: 310 /* empty */ 311 | choice_block common_stmt 312; 313 314/* if entry */ 315 316if_entry: T_IF expr nl 317{ 318 printd(DEBUG_PARSE, "%s:%d:if\n", zconf_curname(), zconf_lineno()); 319 menu_add_entry(NULL); 320 menu_add_dep($2); 321 $$ = menu_add_menu(); 322}; 323 324if_end: end 325{ 326 if (zconf_endtoken($1, T_IF, T_ENDIF)) { 327 menu_end_menu(); 328 printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno()); 329 } 330}; 331 332if_stmt: if_entry if_block if_end 333; 334 335if_block: 336 /* empty */ 337 | if_block common_stmt 338 | if_block menu_stmt 339 | if_block choice_stmt 340; 341 342/* mainmenu entry */ 343 344mainmenu_stmt: T_MAINMENU prompt nl 345{ 346 menu_add_prompt(P_MENU, $2, NULL); 347}; 348 349/* menu entry */ 350 351menu: T_MENU prompt T_EOL 352{ 353 menu_add_entry(NULL); 354 menu_add_prompt(P_MENU, $2, NULL); 355 printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno()); 356}; 357 358menu_entry: menu visibility_list depends_list 359{ 360 $$ = menu_add_menu(); 361}; 362 363menu_end: end 364{ 365 if (zconf_endtoken($1, T_MENU, T_ENDMENU)) { 366 menu_end_menu(); 367 printd(DEBUG_PARSE, "%s:%d:endmenu\n", zconf_curname(), zconf_lineno()); 368 } 369}; 370 371menu_stmt: menu_entry menu_block menu_end 372; 373 374menu_block: 375 /* empty */ 376 | menu_block common_stmt 377 | menu_block menu_stmt 378 | menu_block choice_stmt 379; 380 381source_stmt: T_SOURCE prompt T_EOL 382{ 383 printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2); 384 zconf_nextfile($2); 385}; 386 387/* comment entry */ 388 389comment: T_COMMENT prompt T_EOL 390{ 391 menu_add_entry(NULL); 392 menu_add_prompt(P_COMMENT, $2, NULL); 393 printd(DEBUG_PARSE, "%s:%d:comment\n", zconf_curname(), zconf_lineno()); 394}; 395 396comment_stmt: comment depends_list 397{ 398 menu_end_entry(); 399}; 400 401/* help option */ 402 403help_start: T_HELP T_EOL 404{ 405 printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno()); 406 zconf_starthelp(); 407}; 408 409help: help_start T_HELPTEXT 410{ 411 current_entry->help = $2; 412}; 413 414/* depends option */ 415 416depends_list: 417 /* empty */ 418 | depends_list depends 419 | depends_list T_EOL 420 | depends_list option_error 421; 422 423depends: T_DEPENDS T_ON expr T_EOL 424{ 425 menu_add_dep($3); 426 printd(DEBUG_PARSE, "%s:%d:depends on\n", zconf_curname(), zconf_lineno()); 427}; 428 429/* visibility option */ 430 431visibility_list: 432 /* empty */ 433 | visibility_list visible 434 | visibility_list T_EOL 435; 436 437visible: T_VISIBLE if_expr 438{ 439 menu_add_visibility($2); 440}; 441 442/* prompt statement */ 443 444prompt_stmt_opt: 445 /* empty */ 446 | prompt if_expr 447{ 448 menu_add_prompt(P_PROMPT, $1, $2); 449}; 450 451prompt: T_WORD 452 | T_WORD_QUOTE 453; 454 455end: T_ENDMENU T_EOL { $$ = $1; } 456 | T_ENDCHOICE T_EOL { $$ = $1; } 457 | T_ENDIF T_EOL { $$ = $1; } 458; 459 460nl: 461 T_EOL 462 | nl T_EOL 463; 464 465if_expr: /* empty */ { $$ = NULL; } 466 | T_IF expr { $$ = $2; } 467; 468 469expr: symbol { $$ = expr_alloc_symbol($1); } 470 | symbol T_EQUAL symbol { $$ = expr_alloc_comp(E_EQUAL, $1, $3); } 471 | symbol T_UNEQUAL symbol { $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); } 472 | T_OPEN_PAREN expr T_CLOSE_PAREN { $$ = $2; } 473 | T_NOT expr { $$ = expr_alloc_one(E_NOT, $2); } 474 | expr T_OR expr { $$ = expr_alloc_two(E_OR, $1, $3); } 475 | expr T_AND expr { $$ = expr_alloc_two(E_AND, $1, $3); } 476; 477 478symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); } 479 | T_WORD_QUOTE { $$ = sym_lookup($1, SYMBOL_CONST); free($1); } 480; 481 482word_opt: /* empty */ { $$ = NULL; } 483 | T_WORD 484 485%% 486 487void conf_parse(const char *name) 488{ 489 struct symbol *sym; 490 int i; 491 492 zconf_initscan(name); 493 494 sym_init(); 495 _menu_init(); 496 rootmenu.prompt = menu_add_prompt(P_MENU, "Linux Kernel Configuration", NULL); 497 498 if (getenv("ZCONF_DEBUG")) 499 zconfdebug = 1; 500 zconfparse(); 501 if (zconfnerrs) 502 exit(1); 503 if (!modules_sym) 504 modules_sym = sym_find( "n" ); 505 506 rootmenu.prompt->text = _(rootmenu.prompt->text); 507 rootmenu.prompt->text = sym_expand_string_value(rootmenu.prompt->text); 508 509 menu_finalize(&rootmenu); 510 for_all_symbols(i, sym) { 511 if (sym_check_deps(sym)) 512 zconfnerrs++; 513 } 514 if (zconfnerrs) 515 exit(1); 516 sym_set_change_count(1); 517} 518 519static const char *zconf_tokenname(int token) 520{ 521 switch (token) { 522 case T_MENU: return "menu"; 523 case T_ENDMENU: return "endmenu"; 524 case T_CHOICE: return "choice"; 525 case T_ENDCHOICE: return "endchoice"; 526 case T_IF: return "if"; 527 case T_ENDIF: return "endif"; 528 case T_DEPENDS: return "depends"; 529 case T_VISIBLE: return "visible"; 530 } 531 return "<token>"; 532} 533 534static bool zconf_endtoken(const struct kconf_id *id, int starttoken, int endtoken) 535{ 536 if (id->token != endtoken) { 537 zconf_error("unexpected '%s' within %s block", 538 kconf_id_strings + id->name, zconf_tokenname(starttoken)); 539 zconfnerrs++; 540 return false; 541 } 542 if (current_menu->file != current_file) { 543 zconf_error("'%s' in different file than '%s'", 544 kconf_id_strings + id->name, zconf_tokenname(starttoken)); 545 fprintf(stderr, "%s:%d: location of the '%s'\n", 546 current_menu->file->name, current_menu->lineno, 547 zconf_tokenname(starttoken)); 548 zconfnerrs++; 549 return false; 550 } 551 return true; 552} 553 554static void zconfprint(const char *err, ...) 555{ 556 va_list ap; 557 558 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno()); 559 va_start(ap, err); 560 vfprintf(stderr, err, ap); 561 va_end(ap); 562 fprintf(stderr, "\n"); 563} 564 565static void zconf_error(const char *err, ...) 566{ 567 va_list ap; 568 569 zconfnerrs++; 570 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno()); 571 va_start(ap, err); 572 vfprintf(stderr, err, ap); 573 va_end(ap); 574 fprintf(stderr, "\n"); 575} 576 577static void zconferror(const char *err) 578{ 579 fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err); 580} 581 582static void print_quoted_string(FILE *out, const char *str) 583{ 584 const char *p; 585 int len; 586 587 putc('"', out); 588 while ((p = strchr(str, '"'))) { 589 len = p - str; 590 if (len) 591 fprintf(out, "%.*s", len, str); 592 fputs("\\\"", out); 593 str = p + 1; 594 } 595 fputs(str, out); 596 putc('"', out); 597} 598 599static void print_symbol(FILE *out, struct menu *menu) 600{ 601 struct symbol *sym = menu->sym; 602 struct property *prop; 603 604 if (sym_is_choice(sym)) 605 fprintf(out, "\nchoice\n"); 606 else 607 fprintf(out, "\nconfig %s\n", sym->name); 608 switch (sym->type) { 609 case S_BOOLEAN: 610 fputs(" boolean\n", out); 611 break; 612 case S_TRISTATE: 613 fputs(" tristate\n", out); 614 break; 615 case S_STRING: 616 fputs(" string\n", out); 617 break; 618 case S_INT: 619 fputs(" integer\n", out); 620 break; 621 case S_HEX: 622 fputs(" hex\n", out); 623 break; 624 default: 625 fputs(" ???\n", out); 626 break; 627 } 628 for (prop = sym->prop; prop; prop = prop->next) { 629 if (prop->menu != menu) 630 continue; 631 switch (prop->type) { 632 case P_PROMPT: 633 fputs(" prompt ", out); 634 print_quoted_string(out, prop->text); 635 if (!expr_is_yes(prop->visible.expr)) { 636 fputs(" if ", out); 637 expr_fprint(prop->visible.expr, out); 638 } 639 fputc('\n', out); 640 break; 641 case P_DEFAULT: 642 fputs( " default ", out); 643 expr_fprint(prop->expr, out); 644 if (!expr_is_yes(prop->visible.expr)) { 645 fputs(" if ", out); 646 expr_fprint(prop->visible.expr, out); 647 } 648 fputc('\n', out); 649 break; 650 case P_CHOICE: 651 fputs(" #choice value\n", out); 652 break; 653 case P_SELECT: 654 fputs( " select ", out); 655 expr_fprint(prop->expr, out); 656 fputc('\n', out); 657 break; 658 case P_RANGE: 659 fputs( " range ", out); 660 expr_fprint(prop->expr, out); 661 fputc('\n', out); 662 break; 663 case P_MENU: 664 fputs( " menu ", out); 665 print_quoted_string(out, prop->text); 666 fputc('\n', out); 667 break; 668 default: 669 fprintf(out, " unknown prop %d!\n", prop->type); 670 break; 671 } 672 } 673 if (menu->help) { 674 int len = strlen(menu->help); 675 while (menu->help[--len] == '\n') 676 menu->help[len] = 0; 677 fprintf(out, " help\n%s\n", menu->help); 678 } 679} 680 681void zconfdump(FILE *out) 682{ 683 struct property *prop; 684 struct symbol *sym; 685 struct menu *menu; 686 687 menu = rootmenu.list; 688 while (menu) { 689 if ((sym = menu->sym)) 690 print_symbol(out, menu); 691 else if ((prop = menu->prompt)) { 692 switch (prop->type) { 693 case P_COMMENT: 694 fputs("\ncomment ", out); 695 print_quoted_string(out, prop->text); 696 fputs("\n", out); 697 break; 698 case P_MENU: 699 fputs("\nmenu ", out); 700 print_quoted_string(out, prop->text); 701 fputs("\n", out); 702 break; 703 default: 704 ; 705 } 706 if (!expr_is_yes(prop->visible.expr)) { 707 fputs(" depends ", out); 708 expr_fprint(prop->visible.expr, out); 709 fputc('\n', out); 710 } 711 } 712 713 if (menu->list) 714 menu = menu->list; 715 else if (menu->next) 716 menu = menu->next; 717 else while ((menu = menu->parent)) { 718 if (menu->prompt && menu->prompt->type == P_MENU) 719 fputs("\nendmenu\n", out); 720 if (menu->next) { 721 menu = menu->next; 722 break; 723 } 724 } 725 } 726} 727 728#include "zconf.lex.c" 729#include "util.c" 730#include "confdata.c" 731#include "expr.c" 732#include "symbol.c" 733#include "menu.c" 734