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_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 %%
103 input: nl start | start;
104
105 start: mainmenu_stmt stmt_list | stmt_list;
106
107 stmt_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
121 option_name:
122 T_DEPENDS | T_PROMPT | T_TYPE | T_SELECT | T_OPTIONAL | T_RANGE | T_DEFAULT | T_VISIBLE
123 ;
124
125 common_stmt:
126 T_EOL
127 | if_stmt
128 | comment_stmt
129 | config_stmt
130 | menuconfig_stmt
131 | source_stmt
132 ;
133
134 option_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
142 config_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
150 config_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
156 menuconfig_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
164 menuconfig_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
174 config_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
184 config_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
192 config_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
198 config_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
208 config_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
214 config_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
220 symbol_option: T_OPTION symbol_option_list T_EOL
221 ;
222
223 symbol_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
235 symbol_option_arg:
236 /* empty */ { $$ = NULL; }
237 | T_EQUAL prompt { $$ = $2; }
238 ;
239
240 /* choice entry */
241
242 choice: T_CHOICE word_opt T_EOL
243 {
244 struct symbol *sym = sym_lookup($2, SYMBOL_CHOICE);
245 sym->flags |= SYMBOL_AUTO;
246 menu_add_entry(sym);
247 menu_add_expr(P_CHOICE, NULL, NULL);
248 printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
249 };
250
251 choice_entry: choice choice_option_list
252 {
253 $$ = menu_add_menu();
254 };
255
256 choice_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
264 choice_stmt: choice_entry choice_block choice_end
265 ;
266
267 choice_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
276 choice_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
282 choice_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
293 choice_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
299 choice_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
309 choice_block:
310 /* empty */
311 | choice_block common_stmt
312 ;
313
314 /* if entry */
315
316 if_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 $$ = menu_add_menu();
322 };
323
324 if_end: end
325 {
326 if (zconf_endtoken($1, T_IF, T_ENDIF)) {
327 menu_end_menu();
328 printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
329 }
330 };
331
332 if_stmt: if_entry if_block if_end
333 ;
334
335 if_block:
336 /* empty */
337 | if_block common_stmt
338 | if_block menu_stmt
339 | if_block choice_stmt
340 ;
341
342 /* mainmenu entry */
343
344 mainmenu_stmt: T_MAINMENU prompt nl
345 {
346 menu_add_prompt(P_MENU, $2, NULL);
347 };
348
349 /* menu entry */
350
351 menu: T_MENU prompt T_EOL
352 {
353 menu_add_entry(NULL);
354 menu_add_prompt(P_MENU, $2, NULL);
355 printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
356 };
357
358 menu_entry: menu visibility_list depends_list
359 {
360 $$ = menu_add_menu();
361 };
362
363 menu_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
371 menu_stmt: menu_entry menu_block menu_end
372 ;
373
374 menu_block:
375 /* empty */
376 | menu_block common_stmt
377 | menu_block menu_stmt
378 | menu_block choice_stmt
379 ;
380
381 source_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
389 comment: 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
396 comment_stmt: comment depends_list
397 {
398 menu_end_entry();
399 };
400
401 /* help option */
402
403 help_start: T_HELP T_EOL
404 {
405 printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno());
406 zconf_starthelp();
407 };
408
409 help: help_start T_HELPTEXT
410 {
411 current_entry->help = $2;
412 };
413
414 /* depends option */
415
416 depends_list:
417 /* empty */
418 | depends_list depends
419 | depends_list T_EOL
420 | depends_list option_error
421 ;
422
423 depends: 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
431 visibility_list:
432 /* empty */
433 | visibility_list visible
434 | visibility_list T_EOL
435 ;
436
437 visible: T_VISIBLE if_expr
438 {
439 menu_add_visibility($2);
440 };
441
442 /* prompt statement */
443
444 prompt_stmt_opt:
445 /* empty */
446 | prompt if_expr
447 {
448 menu_add_prompt(P_PROMPT, $1, $2);
449 };
450
451 prompt: T_WORD
452 | T_WORD_QUOTE
453 ;
454
455 end: T_ENDMENU T_EOL { $$ = $1; }
456 | T_ENDCHOICE T_EOL { $$ = $1; }
457 | T_ENDIF T_EOL { $$ = $1; }
458 ;
459
460 nl:
461 T_EOL
462 | nl T_EOL
463 ;
464
465 if_expr: /* empty */ { $$ = NULL; }
466 | T_IF expr { $$ = $2; }
467 ;
468
469 expr: symbol { $$ = 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
478 symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); }
479 | T_WORD_QUOTE { $$ = sym_lookup($1, SYMBOL_CONST); free($1); }
480 ;
481
482 word_opt: /* empty */ { $$ = NULL; }
483 | T_WORD
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 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);
for_all_symbols(i,sym)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
zconf_tokenname(int token)519 static 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
zconf_endtoken(const struct kconf_id * id,int starttoken,int endtoken)534 static 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
zconfprint(const char * err,...)554 static 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
zconf_error(const char * err,...)565 static 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
zconferror(const char * err)577 static void zconferror(const char *err)
578 {
579 fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
580 }
581
print_quoted_string(FILE * out,const char * str)582 static 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
print_symbol(FILE * out,struct menu * menu)599 static 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
zconfdump(FILE * out)681 void 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