blob: 49fb4ab664c39b555692896f97fc8d6bfad36cd1 [file] [log] [blame]
Kevin O'Connora4c5daf2011-01-24 22:13:58 -05001%{
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#define printd(mask, fmt...) if (cdebug & (mask)) printf(fmt)
18
19#define PRINTD 0x0001
20#define DEBUG_PARSE 0x0002
21
22int cdebug = PRINTD;
23
24extern int zconflex(void);
25static void zconfprint(const char *err, ...);
26static void zconf_error(const char *err, ...);
27static void zconferror(const char *err);
28static bool zconf_endtoken(struct kconf_id *id, int starttoken, int endtoken);
29
30struct symbol *symbol_hash[SYMBOL_HASHSIZE];
31
32static struct menu *current_menu, *current_entry;
33
34#define YYDEBUG 0
35#if YYDEBUG
36#define YYERROR_VERBOSE
37#endif
38%}
39%expect 30
40
41%union
42{
43 char *string;
44 struct file *file;
45 struct symbol *symbol;
46 struct expr *expr;
47 struct menu *menu;
48 struct kconf_id *id;
49}
50
51%token <id>T_MAINMENU
52%token <id>T_MENU
53%token <id>T_ENDMENU
54%token <id>T_SOURCE
55%token <id>T_CHOICE
56%token <id>T_ENDCHOICE
57%token <id>T_COMMENT
58%token <id>T_CONFIG
59%token <id>T_MENUCONFIG
60%token <id>T_HELP
61%token <string> T_HELPTEXT
62%token <id>T_IF
63%token <id>T_ENDIF
64%token <id>T_DEPENDS
65%token <id>T_OPTIONAL
66%token <id>T_PROMPT
67%token <id>T_TYPE
68%token <id>T_DEFAULT
69%token <id>T_SELECT
70%token <id>T_RANGE
71%token <id>T_VISIBLE
72%token <id>T_OPTION
73%token <id>T_ON
74%token <string> T_WORD
75%token <string> T_WORD_QUOTE
76%token T_UNEQUAL
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%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%%
108input: nl start | start;
109
110start: mainmenu_stmt stmt_list | stmt_list;
111
112stmt_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
126option_name:
127 T_DEPENDS | T_PROMPT | T_TYPE | T_SELECT | T_OPTIONAL | T_RANGE | T_DEFAULT | T_VISIBLE
128;
129
130common_stmt:
131 T_EOL
132 | if_stmt
133 | comment_stmt
134 | config_stmt
135 | menuconfig_stmt
136 | source_stmt
137;
138
139option_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
147config_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
155config_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
161menuconfig_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
169menuconfig_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
179config_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
189config_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
197config_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
203config_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
213config_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
219config_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
225symbol_option: T_OPTION symbol_option_list T_EOL
226;
227
228symbol_option_list:
229 /* empty */
230 | symbol_option_list T_WORD symbol_option_arg
231{
232 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
240symbol_option_arg:
241 /* empty */ { $$ = NULL; }
242 | T_EQUAL prompt { $$ = $2; }
243;
244
245/* choice entry */
246
247choice: T_CHOICE word_opt T_EOL
248{
249 struct symbol *sym = sym_lookup($2, SYMBOL_CHOICE);
250 sym->flags |= SYMBOL_AUTO;
251 menu_add_entry(sym);
252 menu_add_expr(P_CHOICE, NULL, NULL);
253 printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
254};
255
256choice_entry: choice choice_option_list
257{
258 $$ = menu_add_menu();
259};
260
261choice_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
269choice_stmt: choice_entry choice_block choice_end
270;
271
272choice_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
281choice_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
287choice_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
298choice_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
304choice_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
314choice_block:
315 /* empty */
316 | choice_block common_stmt
317;
318
319/* if entry */
320
321if_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 $$ = menu_add_menu();
327};
328
329if_end: end
330{
331 if (zconf_endtoken($1, T_IF, T_ENDIF)) {
332 menu_end_menu();
333 printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
334 }
335};
336
337if_stmt: if_entry if_block if_end
338;
339
340if_block:
341 /* empty */
342 | if_block common_stmt
343 | if_block menu_stmt
344 | if_block choice_stmt
345;
346
347/* mainmenu entry */
348
349mainmenu_stmt: T_MAINMENU prompt nl
350{
351 menu_add_prompt(P_MENU, $2, NULL);
352};
353
354/* menu entry */
355
356menu: T_MENU prompt T_EOL
357{
358 menu_add_entry(NULL);
359 menu_add_prompt(P_MENU, $2, NULL);
360 printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
361};
362
363menu_entry: menu visibility_list depends_list
364{
365 $$ = menu_add_menu();
366};
367
368menu_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
376menu_stmt: menu_entry menu_block menu_end
377;
378
379menu_block:
380 /* empty */
381 | menu_block common_stmt
382 | menu_block menu_stmt
383 | menu_block choice_stmt
384;
385
386source_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
394comment: 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
401comment_stmt: comment depends_list
402{
403 menu_end_entry();
404};
405
406/* help option */
407
408help_start: T_HELP T_EOL
409{
410 printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno());
411 zconf_starthelp();
412};
413
414help: help_start T_HELPTEXT
415{
416 current_entry->help = $2;
417};
418
419/* depends option */
420
421depends_list:
422 /* empty */
423 | depends_list depends
424 | depends_list T_EOL
425 | depends_list option_error
426;
427
428depends: 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
436visibility_list:
437 /* empty */
438 | visibility_list visible
439 | visibility_list T_EOL
440;
441
442visible: T_VISIBLE if_expr
443{
444 menu_add_visibility($2);
445};
446
447/* prompt statement */
448
449prompt_stmt_opt:
450 /* empty */
451 | prompt if_expr
452{
453 menu_add_prompt(P_PROMPT, $1, $2);
454};
455
456prompt: T_WORD
457 | T_WORD_QUOTE
458;
459
460end: T_ENDMENU T_EOL { $$ = $1; }
461 | T_ENDCHOICE T_EOL { $$ = $1; }
462 | T_ENDIF T_EOL { $$ = $1; }
463;
464
465nl:
466 T_EOL
467 | nl T_EOL
468;
469
470if_expr: /* empty */ { $$ = NULL; }
471 | T_IF expr { $$ = $2; }
472;
473
474expr: symbol { $$ = expr_alloc_symbol($1); }
475 | symbol T_EQUAL symbol { $$ = expr_alloc_comp(E_EQUAL, $1, $3); }
476 | symbol T_UNEQUAL symbol { $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); }
477 | T_OPEN_PAREN expr T_CLOSE_PAREN { $$ = $2; }
478 | T_NOT expr { $$ = expr_alloc_one(E_NOT, $2); }
479 | expr T_OR expr { $$ = expr_alloc_two(E_OR, $1, $3); }
480 | expr T_AND expr { $$ = expr_alloc_two(E_AND, $1, $3); }
481;
482
483symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); }
484 | T_WORD_QUOTE { $$ = sym_lookup($1, SYMBOL_CONST); free($1); }
485;
486
487word_opt: /* empty */ { $$ = NULL; }
488 | T_WORD
489
490%%
491
492void conf_parse(const char *name)
493{
494 struct symbol *sym;
495 int i;
496
497 zconf_initscan(name);
498
499 sym_init();
500 _menu_init();
501 modules_sym = sym_lookup(NULL, 0);
502 modules_sym->type = S_BOOLEAN;
503 modules_sym->flags |= SYMBOL_AUTO;
504 rootmenu.prompt = menu_add_prompt(P_MENU, "Linux Kernel Configuration", NULL);
505
506#if YYDEBUG
507 if (getenv("ZCONF_DEBUG"))
508 zconfdebug = 1;
509#endif
510 zconfparse();
511 if (zconfnerrs)
512 exit(1);
513 if (!modules_sym->prop) {
514 struct property *prop;
515
516 prop = prop_alloc(P_DEFAULT, modules_sym);
517 prop->expr = expr_alloc_symbol(sym_lookup("MODULES", 0));
518 }
519
520 rootmenu.prompt->text = _(rootmenu.prompt->text);
521 rootmenu.prompt->text = sym_expand_string_value(rootmenu.prompt->text);
522
523 menu_finalize(&rootmenu);
524 for_all_symbols(i, sym) {
525 if (sym_check_deps(sym))
526 zconfnerrs++;
527 }
528 if (zconfnerrs)
529 exit(1);
530 sym_set_change_count(1);
531}
532
533static const char *zconf_tokenname(int token)
534{
535 switch (token) {
536 case T_MENU: return "menu";
537 case T_ENDMENU: return "endmenu";
538 case T_CHOICE: return "choice";
539 case T_ENDCHOICE: return "endchoice";
540 case T_IF: return "if";
541 case T_ENDIF: return "endif";
542 case T_DEPENDS: return "depends";
543 case T_VISIBLE: return "visible";
544 }
545 return "<token>";
546}
547
548static bool zconf_endtoken(struct kconf_id *id, int starttoken, int endtoken)
549{
550 if (id->token != endtoken) {
551 zconf_error("unexpected '%s' within %s block",
552 kconf_id_strings + id->name, zconf_tokenname(starttoken));
553 zconfnerrs++;
554 return false;
555 }
556 if (current_menu->file != current_file) {
557 zconf_error("'%s' in different file than '%s'",
558 kconf_id_strings + id->name, zconf_tokenname(starttoken));
559 fprintf(stderr, "%s:%d: location of the '%s'\n",
560 current_menu->file->name, current_menu->lineno,
561 zconf_tokenname(starttoken));
562 zconfnerrs++;
563 return false;
564 }
565 return true;
566}
567
568static void zconfprint(const char *err, ...)
569{
570 va_list ap;
571
572 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
573 va_start(ap, err);
574 vfprintf(stderr, err, ap);
575 va_end(ap);
576 fprintf(stderr, "\n");
577}
578
579static void zconf_error(const char *err, ...)
580{
581 va_list ap;
582
583 zconfnerrs++;
584 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
585 va_start(ap, err);
586 vfprintf(stderr, err, ap);
587 va_end(ap);
588 fprintf(stderr, "\n");
589}
590
591static void zconferror(const char *err)
592{
593#if YYDEBUG
594 fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
595#endif
596}
597
598static void print_quoted_string(FILE *out, const char *str)
599{
600 const char *p;
601 int len;
602
603 putc('"', out);
604 while ((p = strchr(str, '"'))) {
605 len = p - str;
606 if (len)
607 fprintf(out, "%.*s", len, str);
608 fputs("\\\"", out);
609 str = p + 1;
610 }
611 fputs(str, out);
612 putc('"', out);
613}
614
615static void print_symbol(FILE *out, struct menu *menu)
616{
617 struct symbol *sym = menu->sym;
618 struct property *prop;
619
620 if (sym_is_choice(sym))
621 fprintf(out, "\nchoice\n");
622 else
623 fprintf(out, "\nconfig %s\n", sym->name);
624 switch (sym->type) {
625 case S_BOOLEAN:
626 fputs(" boolean\n", out);
627 break;
628 case S_TRISTATE:
629 fputs(" tristate\n", out);
630 break;
631 case S_STRING:
632 fputs(" string\n", out);
633 break;
634 case S_INT:
635 fputs(" integer\n", out);
636 break;
637 case S_HEX:
638 fputs(" hex\n", out);
639 break;
640 default:
641 fputs(" ???\n", out);
642 break;
643 }
644 for (prop = sym->prop; prop; prop = prop->next) {
645 if (prop->menu != menu)
646 continue;
647 switch (prop->type) {
648 case P_PROMPT:
649 fputs(" prompt ", out);
650 print_quoted_string(out, prop->text);
651 if (!expr_is_yes(prop->visible.expr)) {
652 fputs(" if ", out);
653 expr_fprint(prop->visible.expr, out);
654 }
655 fputc('\n', out);
656 break;
657 case P_DEFAULT:
658 fputs( " default ", out);
659 expr_fprint(prop->expr, out);
660 if (!expr_is_yes(prop->visible.expr)) {
661 fputs(" if ", out);
662 expr_fprint(prop->visible.expr, out);
663 }
664 fputc('\n', out);
665 break;
666 case P_CHOICE:
667 fputs(" #choice value\n", out);
668 break;
669 case P_SELECT:
670 fputs( " select ", out);
671 expr_fprint(prop->expr, out);
672 fputc('\n', out);
673 break;
674 case P_RANGE:
675 fputs( " range ", out);
676 expr_fprint(prop->expr, out);
677 fputc('\n', out);
678 break;
679 case P_MENU:
680 fputs( " menu ", out);
681 print_quoted_string(out, prop->text);
682 fputc('\n', out);
683 break;
684 default:
685 fprintf(out, " unknown prop %d!\n", prop->type);
686 break;
687 }
688 }
689 if (menu->help) {
690 int len = strlen(menu->help);
691 while (menu->help[--len] == '\n')
692 menu->help[len] = 0;
693 fprintf(out, " help\n%s\n", menu->help);
694 }
695}
696
697void zconfdump(FILE *out)
698{
699 struct property *prop;
700 struct symbol *sym;
701 struct menu *menu;
702
703 menu = rootmenu.list;
704 while (menu) {
705 if ((sym = menu->sym))
706 print_symbol(out, menu);
707 else if ((prop = menu->prompt)) {
708 switch (prop->type) {
709 case P_COMMENT:
710 fputs("\ncomment ", out);
711 print_quoted_string(out, prop->text);
712 fputs("\n", out);
713 break;
714 case P_MENU:
715 fputs("\nmenu ", out);
716 print_quoted_string(out, prop->text);
717 fputs("\n", out);
718 break;
719 default:
720 ;
721 }
722 if (!expr_is_yes(prop->visible.expr)) {
723 fputs(" depends ", out);
724 expr_fprint(prop->visible.expr, out);
725 fputc('\n', out);
726 }
727 }
728
729 if (menu->list)
730 menu = menu->list;
731 else if (menu->next)
732 menu = menu->next;
733 else while ((menu = menu->parent)) {
734 if (menu->prompt && menu->prompt->type == P_MENU)
735 fputs("\nendmenu\n", out);
736 if (menu->next) {
737 menu = menu->next;
738 break;
739 }
740 }
741 }
742}
743
744#include "lex.zconf.c"
745#include "util.c"
746#include "confdata.c"
747#include "expr.c"
748#include "symbol.c"
749#include "menu.c"