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 #define LKC_DIRECT_LINK
15 #include "lkc.h"
16
17 #include "zconf.hash.c"
18
19 #define printd(mask, fmt...) if (cdebug & (mask)) printf(fmt)
20
21 #define PRINTD 0x0001
22 #define DEBUG_PARSE 0x0002
23
24 int cdebug = PRINTD;
25
26 extern int zconflex(void);
27 static void zconfprint(const char *err, ...);
28 static void zconf_error(const char *err, ...);
29 static void zconferror(const char *err);
30 static bool zconf_endtoken(struct kconf_id *id, int starttoken, int endtoken);
31
32 struct symbol *symbol_hash[257];
33
34 static struct menu *current_menu, *current_entry;
35
36 #define YYDEBUG 0
37 #if YYDEBUG
38 #define YYERROR_VERBOSE
39 #endif
40 %}
41 %expect 26
42
43 %union
44 {
45 char *string;
46 struct file *file;
47 struct symbol *symbol;
48 struct expr *expr;
49 struct menu *menu;
50 struct kconf_id *id;
51 }
52
53 %token <id>T_MAINMENU
54 %token <id>T_MENU
55 %token <id>T_ENDMENU
56 %token <id>T_SOURCE
57 %token <id>T_CHOICE
58 %token <id>T_ENDCHOICE
59 %token <id>T_COMMENT
60 %token <id>T_CONFIG
61 %token <id>T_MENUCONFIG
62 %token <id>T_HELP
63 %token <string> T_HELPTEXT
64 %token <id>T_IF
65 %token <id>T_ENDIF
66 %token <id>T_DEPENDS
67 %token <id>T_OPTIONAL
68 %token <id>T_PROMPT
69 %token <id>T_TYPE
70 %token <id>T_DEFAULT
71 %token <id>T_SELECT
72 %token <id>T_RANGE
73 %token <id>T_OPTION
74 %token <id>T_ON
75 %token <string> T_WORD
76 %token <string> T_WORD_QUOTE
77 %token T_UNEQUAL
78 %token T_CLOSE_PAREN
79 %token T_OPEN_PAREN
80 %token T_EOL
81
82 %left T_OR
83 %left T_AND
84 %left T_EQUAL T_UNEQUAL
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 input: stmt_list;
105
106 stmt_list:
107 /* empty */
108 | stmt_list common_stmt
109 | stmt_list choice_stmt
110 | stmt_list menu_stmt
111 | stmt_list T_MAINMENU prompt nl
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
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 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 $$ = menu_add_menu();
322 };
323
324 if_end: end
325 {
326 if (zconf_endtoken($1, T_IF, T_ENDIF)) {
327 menu_end_menu();
328 printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
329 }
330 };
331
332 if_stmt: if_entry if_block if_end
333 ;
334
335 if_block:
336 /* empty */
337 | if_block common_stmt
338 | if_block menu_stmt
339 | if_block choice_stmt
340 ;
341
342 /* menu entry */
343
344 menu: T_MENU prompt T_EOL
345 {
346 menu_add_entry(NULL);
347 menu_add_prompt(P_MENU, $2, NULL);
348 printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
349 };
350
351 menu_entry: menu depends_list
352 {
353 $$ = menu_add_menu();
354 };
355
356 menu_end: end
357 {
358 if (zconf_endtoken($1, T_MENU, T_ENDMENU)) {
359 menu_end_menu();
360 printd(DEBUG_PARSE, "%s:%d:endmenu\n", zconf_curname(), zconf_lineno());
361 }
362 };
363
364 menu_stmt: menu_entry menu_block menu_end
365 ;
366
367 menu_block:
368 /* empty */
369 | menu_block common_stmt
370 | menu_block menu_stmt
371 | menu_block choice_stmt
372 ;
373
374 source_stmt: T_SOURCE prompt T_EOL
375 {
376 printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2);
377 zconf_nextfile($2);
378 };
379
380 /* comment entry */
381
382 comment: T_COMMENT prompt T_EOL
383 {
384 menu_add_entry(NULL);
385 menu_add_prompt(P_COMMENT, $2, NULL);
386 printd(DEBUG_PARSE, "%s:%d:comment\n", zconf_curname(), zconf_lineno());
387 };
388
389 comment_stmt: comment depends_list
390 {
391 menu_end_entry();
392 };
393
394 /* help option */
395
396 help_start: T_HELP T_EOL
397 {
398 printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno());
399 zconf_starthelp();
400 };
401
402 help: help_start T_HELPTEXT
403 {
404 current_entry->help = $2;
405 };
406
407 /* depends option */
408
409 depends_list:
410 /* empty */
411 | depends_list depends
412 | depends_list T_EOL
413 | depends_list option_error
414 ;
415
416 depends: T_DEPENDS T_ON expr T_EOL
417 {
418 menu_add_dep($3);
419 printd(DEBUG_PARSE, "%s:%d:depends on\n", zconf_curname(), zconf_lineno());
420 };
421
422 /* prompt statement */
423
424 prompt_stmt_opt:
425 /* empty */
426 | prompt if_expr
427 {
428 menu_add_prompt(P_PROMPT, $1, $2);
429 };
430
431 prompt: T_WORD
432 | T_WORD_QUOTE
433 ;
434
435 end: T_ENDMENU T_EOL { $$ = $1; }
436 | T_ENDCHOICE T_EOL { $$ = $1; }
437 | T_ENDIF T_EOL { $$ = $1; }
438 ;
439
440 nl:
441 T_EOL
442 | nl T_EOL
443 ;
444
445 if_expr: /* empty */ { $$ = NULL; }
446 | T_IF expr { $$ = $2; }
447 ;
448
449 expr: symbol { $$ = expr_alloc_symbol($1); }
450 | symbol T_EQUAL symbol { $$ = expr_alloc_comp(E_EQUAL, $1, $3); }
451 | symbol T_UNEQUAL symbol { $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); }
452 | T_OPEN_PAREN expr T_CLOSE_PAREN { $$ = $2; }
453 | T_NOT expr { $$ = expr_alloc_one(E_NOT, $2); }
454 | expr T_OR expr { $$ = expr_alloc_two(E_OR, $1, $3); }
455 | expr T_AND expr { $$ = expr_alloc_two(E_AND, $1, $3); }
456 ;
457
458 symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); }
459 | T_WORD_QUOTE { $$ = sym_lookup($1, SYMBOL_CONST); free($1); }
460 ;
461
462 word_opt: /* empty */ { $$ = NULL; }
463 | T_WORD
464
465 %%
466
467 void conf_parse(const char *name)
468 {
469 struct symbol *sym;
470 int i;
471
472 zconf_initscan(name);
473
474 sym_init();
475 menu_init();
476 modules_sym = sym_lookup(NULL, 0);
477 modules_sym->type = S_BOOLEAN;
478 modules_sym->flags |= SYMBOL_AUTO;
479 rootmenu.prompt = menu_add_prompt(P_MENU, "Linux Kernel Configuration", NULL);
480
481 #if YYDEBUG
482 if (getenv("ZCONF_DEBUG"))
483 zconfdebug = 1;
484 #endif
485 zconfparse();
486 if (zconfnerrs)
487 exit(1);
488 if (!modules_sym->prop) {
489 struct property *prop;
490
491 prop = prop_alloc(P_DEFAULT, modules_sym);
492 prop->expr = expr_alloc_symbol(sym_lookup("MODULES", 0));
493 }
494 menu_finalize(&rootmenu);
for_all_symbols(i,sym)495 for_all_symbols(i, sym) {
496 if (sym_check_deps(sym))
497 zconfnerrs++;
498 }
499 if (zconfnerrs)
500 exit(1);
501 sym_set_change_count(1);
502 }
503
zconf_tokenname(int token)504 const char *zconf_tokenname(int token)
505 {
506 switch (token) {
507 case T_MENU: return "menu";
508 case T_ENDMENU: return "endmenu";
509 case T_CHOICE: return "choice";
510 case T_ENDCHOICE: return "endchoice";
511 case T_IF: return "if";
512 case T_ENDIF: return "endif";
513 case T_DEPENDS: return "depends";
514 }
515 return "<token>";
516 }
517
zconf_endtoken(struct kconf_id * id,int starttoken,int endtoken)518 static bool zconf_endtoken(struct kconf_id *id, int starttoken, int endtoken)
519 {
520 if (id->token != endtoken) {
521 zconf_error("unexpected '%s' within %s block",
522 kconf_id_strings + id->name, zconf_tokenname(starttoken));
523 zconfnerrs++;
524 return false;
525 }
526 if (current_menu->file != current_file) {
527 zconf_error("'%s' in different file than '%s'",
528 kconf_id_strings + id->name, zconf_tokenname(starttoken));
529 fprintf(stderr, "%s:%d: location of the '%s'\n",
530 current_menu->file->name, current_menu->lineno,
531 zconf_tokenname(starttoken));
532 zconfnerrs++;
533 return false;
534 }
535 return true;
536 }
537
zconfprint(const char * err,...)538 static void zconfprint(const char *err, ...)
539 {
540 va_list ap;
541
542 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
543 va_start(ap, err);
544 vfprintf(stderr, err, ap);
545 va_end(ap);
546 fprintf(stderr, "\n");
547 }
548
zconf_error(const char * err,...)549 static void zconf_error(const char *err, ...)
550 {
551 va_list ap;
552
553 zconfnerrs++;
554 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
555 va_start(ap, err);
556 vfprintf(stderr, err, ap);
557 va_end(ap);
558 fprintf(stderr, "\n");
559 }
560
zconferror(const char * err)561 static void zconferror(const char *err)
562 {
563 #if YYDEBUG
564 fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
565 #endif
566 }
567
print_quoted_string(FILE * out,const char * str)568 void print_quoted_string(FILE *out, const char *str)
569 {
570 const char *p;
571 int len;
572
573 putc('"', out);
574 while ((p = strchr(str, '"'))) {
575 len = p - str;
576 if (len)
577 fprintf(out, "%.*s", len, str);
578 fputs("\\\"", out);
579 str = p + 1;
580 }
581 fputs(str, out);
582 putc('"', out);
583 }
584
print_symbol(FILE * out,struct menu * menu)585 void print_symbol(FILE *out, struct menu *menu)
586 {
587 struct symbol *sym = menu->sym;
588 struct property *prop;
589
590 if (sym_is_choice(sym))
591 fprintf(out, "choice\n");
592 else
593 fprintf(out, "config %s\n", sym->name);
594 switch (sym->type) {
595 case S_BOOLEAN:
596 fputs(" boolean\n", out);
597 break;
598 case S_TRISTATE:
599 fputs(" tristate\n", out);
600 break;
601 case S_STRING:
602 fputs(" string\n", out);
603 break;
604 case S_INT:
605 fputs(" integer\n", out);
606 break;
607 case S_HEX:
608 fputs(" hex\n", out);
609 break;
610 default:
611 fputs(" ???\n", out);
612 break;
613 }
614 for (prop = sym->prop; prop; prop = prop->next) {
615 if (prop->menu != menu)
616 continue;
617 switch (prop->type) {
618 case P_PROMPT:
619 fputs(" prompt ", out);
620 print_quoted_string(out, prop->text);
621 if (!expr_is_yes(prop->visible.expr)) {
622 fputs(" if ", out);
623 expr_fprint(prop->visible.expr, out);
624 }
625 fputc('\n', out);
626 break;
627 case P_DEFAULT:
628 fputs( " default ", out);
629 expr_fprint(prop->expr, out);
630 if (!expr_is_yes(prop->visible.expr)) {
631 fputs(" if ", out);
632 expr_fprint(prop->visible.expr, out);
633 }
634 fputc('\n', out);
635 break;
636 case P_CHOICE:
637 fputs(" #choice value\n", out);
638 break;
639 default:
640 fprintf(out, " unknown prop %d!\n", prop->type);
641 break;
642 }
643 }
644 if (menu->help) {
645 int len = strlen(menu->help);
646 while (menu->help[--len] == '\n')
647 menu->help[len] = 0;
648 fprintf(out, " help\n%s\n", menu->help);
649 }
650 fputc('\n', out);
651 }
652
zconfdump(FILE * out)653 void zconfdump(FILE *out)
654 {
655 struct property *prop;
656 struct symbol *sym;
657 struct menu *menu;
658
659 menu = rootmenu.list;
660 while (menu) {
661 if ((sym = menu->sym))
662 print_symbol(out, menu);
663 else if ((prop = menu->prompt)) {
664 switch (prop->type) {
665 case P_COMMENT:
666 fputs("\ncomment ", out);
667 print_quoted_string(out, prop->text);
668 fputs("\n", out);
669 break;
670 case P_MENU:
671 fputs("\nmenu ", out);
672 print_quoted_string(out, prop->text);
673 fputs("\n", out);
674 break;
675 default:
676 ;
677 }
678 if (!expr_is_yes(prop->visible.expr)) {
679 fputs(" depends ", out);
680 expr_fprint(prop->visible.expr, out);
681 fputc('\n', out);
682 }
683 fputs("\n", out);
684 }
685
686 if (menu->list)
687 menu = menu->list;
688 else if (menu->next)
689 menu = menu->next;
690 else while ((menu = menu->parent)) {
691 if (menu->prompt && menu->prompt->type == P_MENU)
692 fputs("\nendmenu\n", out);
693 if (menu->next) {
694 menu = menu->next;
695 break;
696 }
697 }
698 }
699 }
700
701 #include "lex.zconf.c"
702 #include "util.c"
703 #include "confdata.c"
704 #include "expr.c"
705 #include "symbol.c"
706 #include "menu.c"
707