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