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
21 int cdebug = PRINTD;
22
23 extern int zconflex(void);
24 static void zconfprint(const char *err, ...);
25 static void zconf_error(const char *err, ...);
26 static void zconferror(const char *err);
27 static bool zconf_endtoken(const struct kconf_id *id, int starttoken, int endtoken);
28
29 struct symbol *symbol_hash[SYMBOL_HASHSIZE];
30
31 static 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_IMPLY
66 %token <id>T_RANGE
67 %token <id>T_VISIBLE
68 %token <id>T_OPTION
69 %token <id>T_ON
70 %token <string> T_WORD
71 %token <string> T_WORD_QUOTE
72 %token T_UNEQUAL
73 %token T_LESS
74 %token T_LESS_EQUAL
75 %token T_GREATER
76 %token T_GREATER_EQUAL
77 %token T_CLOSE_PAREN
78 %token T_OPEN_PAREN
79 %token T_EOL
80
81 %left T_OR
82 %left T_AND
83 %left T_EQUAL T_UNEQUAL
84 %left T_LESS T_LESS_EQUAL T_GREATER T_GREATER_EQUAL
85 %nonassoc T_NOT
86
87 %type <string> prompt
88 %type <symbol> symbol
89 %type <expr> expr
90 %type <expr> if_expr
91 %type <id> end
92 %type <id> option_name
93 %type <menu> if_entry menu_entry choice_entry
94 %type <string> symbol_option_arg word_opt
95
96 %destructor {
97 fprintf(stderr, "%s:%d: missing end statement for this entry\n",
98 $$->file->name, $$->lineno);
99 if (current_menu == $$)
100 menu_end_menu();
101 } if_entry menu_entry choice_entry
102
103 %{
104 /* Include zconf_id.c here so it can see the token constants. */
105 #include "kconf_id.c"
106 %}
107
108 %%
109 input: nl start | start;
110
111 start: mainmenu_stmt stmt_list | no_mainmenu_stmt stmt_list;
112
113 /* mainmenu entry */
114
115 mainmenu_stmt: T_MAINMENU prompt T_EOL
116 {
117 menu_add_prompt(P_MENU, $2, NULL);
118 };
119
120 /* Default main menu, if there's no mainmenu entry */
121
122 no_mainmenu_stmt: /* empty */
123 {
124 /*
125 * Hack: Keep the main menu title on the heap so we can safely free it
126 * later regardless of whether it comes from the 'prompt' in
127 * mainmenu_stmt or here
128 */
129 menu_add_prompt(P_MENU, strdup("Linux Kernel Configuration"), NULL);
130 };
131
132
133 stmt_list:
134 /* empty */
135 | stmt_list common_stmt
136 | stmt_list choice_stmt
137 | stmt_list menu_stmt
138 | stmt_list end { zconf_error("unexpected end statement"); }
139 | stmt_list T_WORD error T_EOL { zconf_error("unknown statement \"%s\"", $2); }
140 | stmt_list option_name error T_EOL
141 {
142 zconf_error("unexpected option \"%s\"", $2->name);
143 }
144 | stmt_list error T_EOL { zconf_error("invalid statement"); }
145 ;
146
147 option_name:
148 T_DEPENDS | T_PROMPT | T_TYPE | T_SELECT | T_IMPLY | T_OPTIONAL | T_RANGE | T_DEFAULT | T_VISIBLE
149 ;
150
151 common_stmt:
152 T_EOL
153 | if_stmt
154 | comment_stmt
155 | config_stmt
156 | menuconfig_stmt
157 | source_stmt
158 ;
159
160 option_error:
161 T_WORD error T_EOL { zconf_error("unknown option \"%s\"", $1); }
162 | error T_EOL { zconf_error("invalid option"); }
163 ;
164
165
166 /* config/menuconfig entry */
167
168 config_entry_start: T_CONFIG T_WORD T_EOL
169 {
170 struct symbol *sym = sym_lookup($2, 0);
171 sym->flags |= SYMBOL_OPTIONAL;
172 menu_add_entry(sym);
173 printd(DEBUG_PARSE, "%s:%d:config %s\n", zconf_curname(), zconf_lineno(), $2);
174 };
175
176 config_stmt: config_entry_start config_option_list
177 {
178 menu_end_entry();
179 printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
180 };
181
182 menuconfig_entry_start: T_MENUCONFIG T_WORD T_EOL
183 {
184 struct symbol *sym = sym_lookup($2, 0);
185 sym->flags |= SYMBOL_OPTIONAL;
186 menu_add_entry(sym);
187 printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", zconf_curname(), zconf_lineno(), $2);
188 };
189
190 menuconfig_stmt: menuconfig_entry_start config_option_list
191 {
192 if (current_entry->prompt)
193 current_entry->prompt->type = P_MENU;
194 else
195 zconfprint("warning: menuconfig statement without prompt");
196 menu_end_entry();
197 printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
198 };
199
200 config_option_list:
201 /* empty */
202 | config_option_list config_option
203 | config_option_list symbol_option
204 | config_option_list depends
205 | config_option_list help
206 | config_option_list option_error
207 | config_option_list T_EOL
208 ;
209
210 config_option: T_TYPE prompt_stmt_opt T_EOL
211 {
212 menu_set_type($1->stype);
213 printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
214 zconf_curname(), zconf_lineno(),
215 $1->stype);
216 };
217
218 config_option: T_PROMPT prompt if_expr T_EOL
219 {
220 menu_add_prompt(P_PROMPT, $2, $3);
221 printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
222 };
223
224 config_option: T_DEFAULT expr if_expr T_EOL
225 {
226 menu_add_expr(P_DEFAULT, $2, $3);
227 if ($1->stype != S_UNKNOWN)
228 menu_set_type($1->stype);
229 printd(DEBUG_PARSE, "%s:%d:default(%u)\n",
230 zconf_curname(), zconf_lineno(),
231 $1->stype);
232 };
233
234 config_option: T_SELECT T_WORD if_expr T_EOL
235 {
236 menu_add_symbol(P_SELECT, sym_lookup($2, 0), $3);
237 printd(DEBUG_PARSE, "%s:%d:select\n", zconf_curname(), zconf_lineno());
238 };
239
240 config_option: T_IMPLY T_WORD if_expr T_EOL
241 {
242 menu_add_symbol(P_IMPLY, sym_lookup($2, 0), $3);
243 printd(DEBUG_PARSE, "%s:%d:imply\n", zconf_curname(), zconf_lineno());
244 };
245
246 config_option: T_RANGE symbol symbol if_expr T_EOL
247 {
248 menu_add_expr(P_RANGE, expr_alloc_comp(E_RANGE,$2, $3), $4);
249 printd(DEBUG_PARSE, "%s:%d:range\n", zconf_curname(), zconf_lineno());
250 };
251
252 symbol_option: T_OPTION symbol_option_list T_EOL
253 ;
254
255 symbol_option_list:
256 /* empty */
257 | symbol_option_list T_WORD symbol_option_arg
258 {
259 const struct kconf_id *id = kconf_id_lookup($2, strlen($2));
260 if (id && id->flags & TF_OPTION)
261 menu_add_option(id->token, $3);
262 else
263 zconfprint("warning: ignoring unknown option %s", $2);
264 free($2);
265 };
266
267 symbol_option_arg:
268 /* empty */ { $$ = NULL; }
269 | T_EQUAL prompt { $$ = $2; }
270 ;
271
272 /* choice entry */
273
274 choice: T_CHOICE word_opt T_EOL
275 {
276 struct symbol *sym = sym_lookup($2, SYMBOL_CHOICE);
277 sym->flags |= SYMBOL_AUTO;
278 menu_add_entry(sym);
279 menu_add_expr(P_CHOICE, NULL, NULL);
280 printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
281 };
282
283 choice_entry: choice choice_option_list
284 {
285 $$ = menu_add_menu();
286 };
287
288 choice_end: end
289 {
290 if (zconf_endtoken($1, T_CHOICE, T_ENDCHOICE)) {
291 menu_end_menu();
292 printd(DEBUG_PARSE, "%s:%d:endchoice\n", zconf_curname(), zconf_lineno());
293 }
294 };
295
296 choice_stmt: choice_entry choice_block choice_end
297 ;
298
299 choice_option_list:
300 /* empty */
301 | choice_option_list choice_option
302 | choice_option_list depends
303 | choice_option_list help
304 | choice_option_list T_EOL
305 | choice_option_list option_error
306 ;
307
308 choice_option: T_PROMPT prompt if_expr T_EOL
309 {
310 menu_add_prompt(P_PROMPT, $2, $3);
311 printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
312 };
313
314 choice_option: T_TYPE prompt_stmt_opt T_EOL
315 {
316 if ($1->stype == S_BOOLEAN || $1->stype == S_TRISTATE) {
317 menu_set_type($1->stype);
318 printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
319 zconf_curname(), zconf_lineno(),
320 $1->stype);
321 } else
322 YYERROR;
323 };
324
325 choice_option: T_OPTIONAL T_EOL
326 {
327 current_entry->sym->flags |= SYMBOL_OPTIONAL;
328 printd(DEBUG_PARSE, "%s:%d:optional\n", zconf_curname(), zconf_lineno());
329 };
330
331 choice_option: T_DEFAULT T_WORD if_expr T_EOL
332 {
333 if ($1->stype == S_UNKNOWN) {
334 menu_add_symbol(P_DEFAULT, sym_lookup($2, 0), $3);
335 printd(DEBUG_PARSE, "%s:%d:default\n",
336 zconf_curname(), zconf_lineno());
337 } else
338 YYERROR;
339 };
340
341 choice_block:
342 /* empty */
343 | choice_block common_stmt
344 ;
345
346 /* if entry */
347
348 if_entry: T_IF expr T_EOL
349 {
350 printd(DEBUG_PARSE, "%s:%d:if\n", zconf_curname(), zconf_lineno());
351 menu_add_entry(NULL);
352 menu_add_dep($2);
353 $$ = menu_add_menu();
354 };
355
356 if_end: end
357 {
358 if (zconf_endtoken($1, T_IF, T_ENDIF)) {
359 menu_end_menu();
360 printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
361 }
362 };
363
364 if_stmt: if_entry if_block if_end
365 ;
366
367 if_block:
368 /* empty */
369 | if_block common_stmt
370 | if_block menu_stmt
371 | if_block choice_stmt
372 ;
373
374 /* menu entry */
375
376 menu: T_MENU prompt T_EOL
377 {
378 menu_add_entry(NULL);
379 menu_add_prompt(P_MENU, $2, NULL);
380 printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
381 };
382
383 menu_entry: menu visibility_list depends_list
384 {
385 $$ = menu_add_menu();
386 };
387
388 menu_end: end
389 {
390 if (zconf_endtoken($1, T_MENU, T_ENDMENU)) {
391 menu_end_menu();
392 printd(DEBUG_PARSE, "%s:%d:endmenu\n", zconf_curname(), zconf_lineno());
393 }
394 };
395
396 menu_stmt: menu_entry menu_block menu_end
397 ;
398
399 menu_block:
400 /* empty */
401 | menu_block common_stmt
402 | menu_block menu_stmt
403 | menu_block choice_stmt
404 ;
405
406 source_stmt: T_SOURCE prompt T_EOL
407 {
408 printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2);
409 zconf_nextfile($2);
410 };
411
412 /* comment entry */
413
414 comment: T_COMMENT prompt T_EOL
415 {
416 menu_add_entry(NULL);
417 menu_add_prompt(P_COMMENT, $2, NULL);
418 printd(DEBUG_PARSE, "%s:%d:comment\n", zconf_curname(), zconf_lineno());
419 };
420
421 comment_stmt: comment depends_list
422 {
423 menu_end_entry();
424 };
425
426 /* help option */
427
428 help_start: T_HELP T_EOL
429 {
430 printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno());
431 zconf_starthelp();
432 };
433
434 help: help_start T_HELPTEXT
435 {
436 current_entry->help = $2;
437 };
438
439 /* depends option */
440
441 depends_list:
442 /* empty */
443 | depends_list depends
444 | depends_list T_EOL
445 | depends_list option_error
446 ;
447
448 depends: T_DEPENDS T_ON expr T_EOL
449 {
450 menu_add_dep($3);
451 printd(DEBUG_PARSE, "%s:%d:depends on\n", zconf_curname(), zconf_lineno());
452 };
453
454 /* visibility option */
455
456 visibility_list:
457 /* empty */
458 | visibility_list visible
459 | visibility_list T_EOL
460 ;
461
462 visible: T_VISIBLE if_expr
463 {
464 menu_add_visibility($2);
465 };
466
467 /* prompt statement */
468
469 prompt_stmt_opt:
470 /* empty */
471 | prompt if_expr
472 {
473 menu_add_prompt(P_PROMPT, $1, $2);
474 };
475
476 prompt: T_WORD
477 | T_WORD_QUOTE
478 ;
479
480 end: T_ENDMENU T_EOL { $$ = $1; }
481 | T_ENDCHOICE T_EOL { $$ = $1; }
482 | T_ENDIF T_EOL { $$ = $1; }
483 ;
484
485 nl:
486 T_EOL
487 | nl T_EOL
488 ;
489
490 if_expr: /* empty */ { $$ = NULL; }
491 | T_IF expr { $$ = $2; }
492 ;
493
494 expr: symbol { $$ = expr_alloc_symbol($1); }
495 | symbol T_LESS symbol { $$ = expr_alloc_comp(E_LTH, $1, $3); }
496 | symbol T_LESS_EQUAL symbol { $$ = expr_alloc_comp(E_LEQ, $1, $3); }
497 | symbol T_GREATER symbol { $$ = expr_alloc_comp(E_GTH, $1, $3); }
498 | symbol T_GREATER_EQUAL symbol { $$ = expr_alloc_comp(E_GEQ, $1, $3); }
499 | symbol T_EQUAL symbol { $$ = expr_alloc_comp(E_EQUAL, $1, $3); }
500 | symbol T_UNEQUAL symbol { $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); }
501 | T_OPEN_PAREN expr T_CLOSE_PAREN { $$ = $2; }
502 | T_NOT expr { $$ = expr_alloc_one(E_NOT, $2); }
503 | expr T_OR expr { $$ = expr_alloc_two(E_OR, $1, $3); }
504 | expr T_AND expr { $$ = expr_alloc_two(E_AND, $1, $3); }
505 ;
506
507 symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); }
508 | T_WORD_QUOTE { $$ = sym_lookup($1, SYMBOL_CONST); free($1); }
509 ;
510
511 word_opt: /* empty */ { $$ = NULL; }
512 | T_WORD
513
514 %%
515
516 void conf_parse(const char *name)
517 {
518 const char *tmp;
519 struct symbol *sym;
520 int i;
521
522 zconf_initscan(name);
523
524 sym_init();
525 _menu_init();
526
527 if (getenv("ZCONF_DEBUG"))
528 zconfdebug = 1;
529 zconfparse();
530 if (zconfnerrs)
531 exit(1);
532 if (!modules_sym)
533 modules_sym = sym_find( "n" );
534
535 tmp = rootmenu.prompt->text;
536 rootmenu.prompt->text = _(rootmenu.prompt->text);
537 rootmenu.prompt->text = sym_expand_string_value(rootmenu.prompt->text);
538 free((char*)tmp);
539
540 menu_finalize(&rootmenu);
for_all_symbols(i,sym)541 for_all_symbols(i, sym) {
542 if (sym_check_deps(sym))
543 zconfnerrs++;
544 }
545 if (zconfnerrs)
546 exit(1);
547 sym_set_change_count(1);
548 }
549
zconf_tokenname(int token)550 static const char *zconf_tokenname(int token)
551 {
552 switch (token) {
553 case T_MENU: return "menu";
554 case T_ENDMENU: return "endmenu";
555 case T_CHOICE: return "choice";
556 case T_ENDCHOICE: return "endchoice";
557 case T_IF: return "if";
558 case T_ENDIF: return "endif";
559 case T_DEPENDS: return "depends";
560 case T_VISIBLE: return "visible";
561 }
562 return "<token>";
563 }
564
zconf_endtoken(const struct kconf_id * id,int starttoken,int endtoken)565 static bool zconf_endtoken(const struct kconf_id *id, int starttoken, int endtoken)
566 {
567 if (id->token != endtoken) {
568 zconf_error("unexpected '%s' within %s block",
569 id->name, zconf_tokenname(starttoken));
570 zconfnerrs++;
571 return false;
572 }
573 if (current_menu->file != current_file) {
574 zconf_error("'%s' in different file than '%s'",
575 id->name, zconf_tokenname(starttoken));
576 fprintf(stderr, "%s:%d: location of the '%s'\n",
577 current_menu->file->name, current_menu->lineno,
578 zconf_tokenname(starttoken));
579 zconfnerrs++;
580 return false;
581 }
582 return true;
583 }
584
zconfprint(const char * err,...)585 static void zconfprint(const char *err, ...)
586 {
587 va_list ap;
588
589 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
590 va_start(ap, err);
591 vfprintf(stderr, err, ap);
592 va_end(ap);
593 fprintf(stderr, "\n");
594 }
595
zconf_error(const char * err,...)596 static void zconf_error(const char *err, ...)
597 {
598 va_list ap;
599
600 zconfnerrs++;
601 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
602 va_start(ap, err);
603 vfprintf(stderr, err, ap);
604 va_end(ap);
605 fprintf(stderr, "\n");
606 }
607
zconferror(const char * err)608 static void zconferror(const char *err)
609 {
610 fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
611 }
612
print_quoted_string(FILE * out,const char * str)613 static void print_quoted_string(FILE *out, const char *str)
614 {
615 const char *p;
616 int len;
617
618 putc('"', out);
619 while ((p = strchr(str, '"'))) {
620 len = p - str;
621 if (len)
622 fprintf(out, "%.*s", len, str);
623 fputs("\\\"", out);
624 str = p + 1;
625 }
626 fputs(str, out);
627 putc('"', out);
628 }
629
print_symbol(FILE * out,struct menu * menu)630 static void print_symbol(FILE *out, struct menu *menu)
631 {
632 struct symbol *sym = menu->sym;
633 struct property *prop;
634
635 if (sym_is_choice(sym))
636 fprintf(out, "\nchoice\n");
637 else
638 fprintf(out, "\nconfig %s\n", sym->name);
639 switch (sym->type) {
640 case S_BOOLEAN:
641 fputs(" boolean\n", out);
642 break;
643 case S_TRISTATE:
644 fputs(" tristate\n", out);
645 break;
646 case S_STRING:
647 fputs(" string\n", out);
648 break;
649 case S_INT:
650 fputs(" integer\n", out);
651 break;
652 case S_HEX:
653 fputs(" hex\n", out);
654 break;
655 default:
656 fputs(" ???\n", out);
657 break;
658 }
659 for (prop = sym->prop; prop; prop = prop->next) {
660 if (prop->menu != menu)
661 continue;
662 switch (prop->type) {
663 case P_PROMPT:
664 fputs(" prompt ", out);
665 print_quoted_string(out, prop->text);
666 if (!expr_is_yes(prop->visible.expr)) {
667 fputs(" if ", out);
668 expr_fprint(prop->visible.expr, out);
669 }
670 fputc('\n', out);
671 break;
672 case P_DEFAULT:
673 fputs( " default ", out);
674 expr_fprint(prop->expr, out);
675 if (!expr_is_yes(prop->visible.expr)) {
676 fputs(" if ", out);
677 expr_fprint(prop->visible.expr, out);
678 }
679 fputc('\n', out);
680 break;
681 case P_CHOICE:
682 fputs(" #choice value\n", out);
683 break;
684 case P_SELECT:
685 fputs( " select ", out);
686 expr_fprint(prop->expr, out);
687 fputc('\n', out);
688 break;
689 case P_IMPLY:
690 fputs( " imply ", out);
691 expr_fprint(prop->expr, out);
692 fputc('\n', out);
693 break;
694 case P_RANGE:
695 fputs( " range ", out);
696 expr_fprint(prop->expr, out);
697 fputc('\n', out);
698 break;
699 case P_MENU:
700 fputs( " menu ", out);
701 print_quoted_string(out, prop->text);
702 fputc('\n', out);
703 break;
704 default:
705 fprintf(out, " unknown prop %d!\n", prop->type);
706 break;
707 }
708 }
709 if (menu->help) {
710 int len = strlen(menu->help);
711 while (menu->help[--len] == '\n')
712 menu->help[len] = 0;
713 fprintf(out, " help\n%s\n", menu->help);
714 }
715 }
716
zconfdump(FILE * out)717 void zconfdump(FILE *out)
718 {
719 struct property *prop;
720 struct symbol *sym;
721 struct menu *menu;
722
723 menu = rootmenu.list;
724 while (menu) {
725 if ((sym = menu->sym))
726 print_symbol(out, menu);
727 else if ((prop = menu->prompt)) {
728 switch (prop->type) {
729 case P_COMMENT:
730 fputs("\ncomment ", out);
731 print_quoted_string(out, prop->text);
732 fputs("\n", out);
733 break;
734 case P_MENU:
735 fputs("\nmenu ", out);
736 print_quoted_string(out, prop->text);
737 fputs("\n", out);
738 break;
739 default:
740 ;
741 }
742 if (!expr_is_yes(prop->visible.expr)) {
743 fputs(" depends ", out);
744 expr_fprint(prop->visible.expr, out);
745 fputc('\n', out);
746 }
747 }
748
749 if (menu->list)
750 menu = menu->list;
751 else if (menu->next)
752 menu = menu->next;
753 else while ((menu = menu->parent)) {
754 if (menu->prompt && menu->prompt->type == P_MENU)
755 fputs("\nendmenu\n", out);
756 if (menu->next) {
757 menu = menu->next;
758 break;
759 }
760 }
761 }
762 }
763
764 #include "zconf.lex.c"
765 #include "util.c"
766 #include "confdata.c"
767 #include "expr.c"
768 #include "symbol.c"
769 #include "menu.c"
770