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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
21int cdebug = PRINTD;
22
23extern int zconflex(void);
24static void zconfprint(const char *err, ...);
25static void zconf_error(const char *err, ...);
26static void zconferror(const char *err);
27static bool zconf_endtoken(const struct kconf_id *id, int starttoken, int endtoken);
28
29struct symbol *symbol_hash[SYMBOL_HASHSIZE];
30
31static struct menu *current_menu, *current_entry;
32
33%}
34%expect 32
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.hash.c here so it can see the token constants. */
105#include "zconf.hash.c"
106%}
107
108%%
109input: nl start | start;
110
111start: mainmenu_stmt stmt_list | stmt_list;
112
113stmt_list:
114 /* empty */
115 | stmt_list common_stmt
116 | stmt_list choice_stmt
117 | stmt_list menu_stmt
118 | stmt_list end { zconf_error("unexpected end statement"); }
119 | stmt_list T_WORD error T_EOL { zconf_error("unknown statement \"%s\"", $2); }
120 | stmt_list option_name error T_EOL
121{
122 zconf_error("unexpected option \"%s\"", kconf_id_strings + $2->name);
123}
124 | stmt_list error T_EOL { zconf_error("invalid statement"); }
125;
126
127option_name:
128 T_DEPENDS | T_PROMPT | T_TYPE | T_SELECT | T_IMPLY | T_OPTIONAL | T_RANGE | T_DEFAULT | T_VISIBLE
129;
130
131common_stmt:
132 T_EOL
133 | if_stmt
134 | comment_stmt
135 | config_stmt
136 | menuconfig_stmt
137 | source_stmt
138;
139
140option_error:
141 T_WORD error T_EOL { zconf_error("unknown option \"%s\"", $1); }
142 | error T_EOL { zconf_error("invalid option"); }
143;
144
145
146/* config/menuconfig entry */
147
148config_entry_start: T_CONFIG T_WORD T_EOL
149{
150 struct symbol *sym = sym_lookup($2, 0);
151 sym->flags |= SYMBOL_OPTIONAL;
152 menu_add_entry(sym);
153 printd(DEBUG_PARSE, "%s:%d:config %s\n", zconf_curname(), zconf_lineno(), $2);
154};
155
156config_stmt: config_entry_start config_option_list
157{
158 menu_end_entry();
159 printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
160};
161
162menuconfig_entry_start: T_MENUCONFIG T_WORD T_EOL
163{
164 struct symbol *sym = sym_lookup($2, 0);
165 sym->flags |= SYMBOL_OPTIONAL;
166 menu_add_entry(sym);
167 printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", zconf_curname(), zconf_lineno(), $2);
168};
169
170menuconfig_stmt: menuconfig_entry_start config_option_list
171{
172 if (current_entry->prompt)
173 current_entry->prompt->type = P_MENU;
174 else
175 zconfprint("warning: menuconfig statement without prompt");
176 menu_end_entry();
177 printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
178};
179
180config_option_list:
181 /* empty */
182 | config_option_list config_option
183 | config_option_list symbol_option
184 | config_option_list depends
185 | config_option_list help
186 | config_option_list option_error
187 | config_option_list T_EOL
188;
189
190config_option: T_TYPE prompt_stmt_opt T_EOL
191{
192 menu_set_type($1->stype);
193 printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
194 zconf_curname(), zconf_lineno(),
195 $1->stype);
196};
197
198config_option: T_PROMPT prompt if_expr T_EOL
199{
200 menu_add_prompt(P_PROMPT, $2, $3);
201 printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
202};
203
204config_option: T_DEFAULT expr if_expr T_EOL
205{
206 menu_add_expr(P_DEFAULT, $2, $3);
207 if ($1->stype != S_UNKNOWN)
208 menu_set_type($1->stype);
209 printd(DEBUG_PARSE, "%s:%d:default(%u)\n",
210 zconf_curname(), zconf_lineno(),
211 $1->stype);
212};
213
214config_option: T_SELECT T_WORD if_expr T_EOL
215{
216 menu_add_symbol(P_SELECT, sym_lookup($2, 0), $3);
217 printd(DEBUG_PARSE, "%s:%d:select\n", zconf_curname(), zconf_lineno());
218};
219
220config_option: T_IMPLY T_WORD if_expr T_EOL
221{
222 menu_add_symbol(P_IMPLY, sym_lookup($2, 0), $3);
223 printd(DEBUG_PARSE, "%s:%d:imply\n", zconf_curname(), zconf_lineno());
224};
225
226config_option: T_RANGE symbol symbol if_expr T_EOL
227{
228 menu_add_expr(P_RANGE, expr_alloc_comp(E_RANGE,$2, $3), $4);
229 printd(DEBUG_PARSE, "%s:%d:range\n", zconf_curname(), zconf_lineno());
230};
231
232symbol_option: T_OPTION symbol_option_list T_EOL
233;
234
235symbol_option_list:
236 /* empty */
237 | symbol_option_list T_WORD symbol_option_arg
238{
239 const struct kconf_id *id = kconf_id_lookup($2, strlen($2));
240 if (id && id->flags & TF_OPTION)
241 menu_add_option(id->token, $3);
242 else
243 zconfprint("warning: ignoring unknown option %s", $2);
244 free($2);
245};
246
247symbol_option_arg:
248 /* empty */ { $$ = NULL; }
249 | T_EQUAL prompt { $$ = $2; }
250;
251
252/* choice entry */
253
254choice: T_CHOICE word_opt T_EOL
255{
256 struct symbol *sym = sym_lookup($2, SYMBOL_CHOICE);
257 sym->flags |= SYMBOL_AUTO;
258 menu_add_entry(sym);
259 menu_add_expr(P_CHOICE, NULL, NULL);
260 printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
261};
262
263choice_entry: choice choice_option_list
264{
265 $$ = menu_add_menu();
266};
267
268choice_end: end
269{
270 if (zconf_endtoken($1, T_CHOICE, T_ENDCHOICE)) {
271 menu_end_menu();
272 printd(DEBUG_PARSE, "%s:%d:endchoice\n", zconf_curname(), zconf_lineno());
273 }
274};
275
276choice_stmt: choice_entry choice_block choice_end
277;
278
279choice_option_list:
280 /* empty */
281 | choice_option_list choice_option
282 | choice_option_list depends
283 | choice_option_list help
284 | choice_option_list T_EOL
285 | choice_option_list option_error
286;
287
288choice_option: T_PROMPT prompt if_expr T_EOL
289{
290 menu_add_prompt(P_PROMPT, $2, $3);
291 printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
292};
293
294choice_option: T_TYPE prompt_stmt_opt T_EOL
295{
296 if ($1->stype == S_BOOLEAN || $1->stype == S_TRISTATE) {
297 menu_set_type($1->stype);
298 printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
299 zconf_curname(), zconf_lineno(),
300 $1->stype);
301 } else
302 YYERROR;
303};
304
305choice_option: T_OPTIONAL T_EOL
306{
307 current_entry->sym->flags |= SYMBOL_OPTIONAL;
308 printd(DEBUG_PARSE, "%s:%d:optional\n", zconf_curname(), zconf_lineno());
309};
310
311choice_option: T_DEFAULT T_WORD if_expr T_EOL
312{
313 if ($1->stype == S_UNKNOWN) {
314 menu_add_symbol(P_DEFAULT, sym_lookup($2, 0), $3);
315 printd(DEBUG_PARSE, "%s:%d:default\n",
316 zconf_curname(), zconf_lineno());
317 } else
318 YYERROR;
319};
320
321choice_block:
322 /* empty */
323 | choice_block common_stmt
324;
325
326/* if entry */
327
328if_entry: T_IF expr nl
329{
330 printd(DEBUG_PARSE, "%s:%d:if\n", zconf_curname(), zconf_lineno());
331 menu_add_entry(NULL);
332 menu_add_dep($2);
333 $$ = menu_add_menu();
334};
335
336if_end: end
337{
338 if (zconf_endtoken($1, T_IF, T_ENDIF)) {
339 menu_end_menu();
340 printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
341 }
342};
343
344if_stmt: if_entry if_block if_end
345;
346
347if_block:
348 /* empty */
349 | if_block common_stmt
350 | if_block menu_stmt
351 | if_block choice_stmt
352;
353
354/* mainmenu entry */
355
356mainmenu_stmt: T_MAINMENU prompt nl
357{
358 menu_add_prompt(P_MENU, $2, NULL);
359};
360
361/* menu entry */
362
363menu: T_MENU prompt T_EOL
364{
365 menu_add_entry(NULL);
366 menu_add_prompt(P_MENU, $2, NULL);
367 printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
368};
369
370menu_entry: menu visibility_list depends_list
371{
372 $$ = menu_add_menu();
373};
374
375menu_end: end
376{
377 if (zconf_endtoken($1, T_MENU, T_ENDMENU)) {
378 menu_end_menu();
379 printd(DEBUG_PARSE, "%s:%d:endmenu\n", zconf_curname(), zconf_lineno());
380 }
381};
382
383menu_stmt: menu_entry menu_block menu_end
384;
385
386menu_block:
387 /* empty */
388 | menu_block common_stmt
389 | menu_block menu_stmt
390 | menu_block choice_stmt
391;
392
393source_stmt: T_SOURCE prompt T_EOL
394{
395 printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2);
396 zconf_nextfile($2);
397};
398
399/* comment entry */
400
401comment: T_COMMENT prompt T_EOL
402{
403 menu_add_entry(NULL);
404 menu_add_prompt(P_COMMENT, $2, NULL);
405 printd(DEBUG_PARSE, "%s:%d:comment\n", zconf_curname(), zconf_lineno());
406};
407
408comment_stmt: comment depends_list
409{
410 menu_end_entry();
411};
412
413/* help option */
414
415help_start: T_HELP T_EOL
416{
417 printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno());
418 zconf_starthelp();
419};
420
421help: help_start T_HELPTEXT
422{
423 current_entry->help = $2;
424};
425
426/* depends option */
427
428depends_list:
429 /* empty */
430 | depends_list depends
431 | depends_list T_EOL
432 | depends_list option_error
433;
434
435depends: T_DEPENDS T_ON expr T_EOL
436{
437 menu_add_dep($3);
438 printd(DEBUG_PARSE, "%s:%d:depends on\n", zconf_curname(), zconf_lineno());
439};
440
441/* visibility option */
442
443visibility_list:
444 /* empty */
445 | visibility_list visible
446 | visibility_list T_EOL
447;
448
449visible: T_VISIBLE if_expr
450{
451 menu_add_visibility($2);
452};
453
454/* prompt statement */
455
456prompt_stmt_opt:
457 /* empty */
458 | prompt if_expr
459{
460 menu_add_prompt(P_PROMPT, $1, $2);
461};
462
463prompt: T_WORD
464 | T_WORD_QUOTE
465;
466
467end: T_ENDMENU T_EOL { $$ = $1; }
468 | T_ENDCHOICE T_EOL { $$ = $1; }
469 | T_ENDIF T_EOL { $$ = $1; }
470;
471
472nl:
473 T_EOL
474 | nl T_EOL
475;
476
477if_expr: /* empty */ { $$ = NULL; }
478 | T_IF expr { $$ = $2; }
479;
480
481expr: symbol { $$ = expr_alloc_symbol($1); }
482 | symbol T_LESS symbol { $$ = expr_alloc_comp(E_LTH, $1, $3); }
483 | symbol T_LESS_EQUAL symbol { $$ = expr_alloc_comp(E_LEQ, $1, $3); }
484 | symbol T_GREATER symbol { $$ = expr_alloc_comp(E_GTH, $1, $3); }
485 | symbol T_GREATER_EQUAL symbol { $$ = expr_alloc_comp(E_GEQ, $1, $3); }
486 | symbol T_EQUAL symbol { $$ = expr_alloc_comp(E_EQUAL, $1, $3); }
487 | symbol T_UNEQUAL symbol { $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); }
488 | T_OPEN_PAREN expr T_CLOSE_PAREN { $$ = $2; }
489 | T_NOT expr { $$ = expr_alloc_one(E_NOT, $2); }
490 | expr T_OR expr { $$ = expr_alloc_two(E_OR, $1, $3); }
491 | expr T_AND expr { $$ = expr_alloc_two(E_AND, $1, $3); }
492;
493
494symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); }
495 | T_WORD_QUOTE { $$ = sym_lookup($1, SYMBOL_CONST); free($1); }
496;
497
498word_opt: /* empty */ { $$ = NULL; }
499 | T_WORD
500
501%%
502
503void conf_parse(const char *name)
504{
505 struct symbol *sym;
506 int i;
507
508 zconf_initscan(name);
509
510 sym_init();
511 _menu_init();
512 rootmenu.prompt = menu_add_prompt(P_MENU, "Linux Kernel Configuration", NULL);
513
514 if (getenv("ZCONF_DEBUG"))
515 zconfdebug = 1;
516 zconfparse();
517 if (zconfnerrs)
518 exit(1);
519 if (!modules_sym)
520 modules_sym = sym_find( "n" );
521
522 rootmenu.prompt->text = _(rootmenu.prompt->text);
523 rootmenu.prompt->text = sym_expand_string_value(rootmenu.prompt->text);
524
525 menu_finalize(&rootmenu);
526 for_all_symbols(i, sym) {
527 if (sym_check_deps(sym))
528 zconfnerrs++;
529 }
530 if (zconfnerrs)
531 exit(1);
532 sym_set_change_count(1);
533}
534
535static const char *zconf_tokenname(int token)
536{
537 switch (token) {
538 case T_MENU: return "menu";
539 case T_ENDMENU: return "endmenu";
540 case T_CHOICE: return "choice";
541 case T_ENDCHOICE: return "endchoice";
542 case T_IF: return "if";
543 case T_ENDIF: return "endif";
544 case T_DEPENDS: return "depends";
545 case T_VISIBLE: return "visible";
546 }
547 return "<token>";
548}
549
550static bool zconf_endtoken(const struct kconf_id *id, int starttoken, int endtoken)
551{
552 if (id->token != endtoken) {
553 zconf_error("unexpected '%s' within %s block",
554 kconf_id_strings + id->name, zconf_tokenname(starttoken));
555 zconfnerrs++;
556 return false;
557 }
558 if (current_menu->file != current_file) {
559 zconf_error("'%s' in different file than '%s'",
560 kconf_id_strings + id->name, zconf_tokenname(starttoken));
561 fprintf(stderr, "%s:%d: location of the '%s'\n",
562 current_menu->file->name, current_menu->lineno,
563 zconf_tokenname(starttoken));
564 zconfnerrs++;
565 return false;
566 }
567 return true;
568}
569
570static void zconfprint(const char *err, ...)
571{
572 va_list ap;
573
574 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
575 va_start(ap, err);
576 vfprintf(stderr, err, ap);
577 va_end(ap);
578 fprintf(stderr, "\n");
579}
580
581static void zconf_error(const char *err, ...)
582{
583 va_list ap;
584
585 zconfnerrs++;
586 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
587 va_start(ap, err);
588 vfprintf(stderr, err, ap);
589 va_end(ap);
590 fprintf(stderr, "\n");
591}
592
593static void zconferror(const char *err)
594{
595 fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
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_IMPLY:
675 fputs( " imply ", out);
676 expr_fprint(prop->expr, out);
677 fputc('\n', out);
678 break;
679 case P_RANGE:
680 fputs( " range ", out);
681 expr_fprint(prop->expr, out);
682 fputc('\n', out);
683 break;
684 case P_MENU:
685 fputs( " menu ", out);
686 print_quoted_string(out, prop->text);
687 fputc('\n', out);
688 break;
689 default:
690 fprintf(out, " unknown prop %d!\n", prop->type);
691 break;
692 }
693 }
694 if (menu->help) {
695 int len = strlen(menu->help);
696 while (menu->help[--len] == '\n')
697 menu->help[len] = 0;
698 fprintf(out, " help\n%s\n", menu->help);
699 }
700}
701
702void zconfdump(FILE *out)
703{
704 struct property *prop;
705 struct symbol *sym;
706 struct menu *menu;
707
708 menu = rootmenu.list;
709 while (menu) {
710 if ((sym = menu->sym))
711 print_symbol(out, menu);
712 else if ((prop = menu->prompt)) {
713 switch (prop->type) {
714 case P_COMMENT:
715 fputs("\ncomment ", out);
716 print_quoted_string(out, prop->text);
717 fputs("\n", out);
718 break;
719 case P_MENU:
720 fputs("\nmenu ", out);
721 print_quoted_string(out, prop->text);
722 fputs("\n", out);
723 break;
724 default:
725 ;
726 }
727 if (!expr_is_yes(prop->visible.expr)) {
728 fputs(" depends ", out);
729 expr_fprint(prop->visible.expr, out);
730 fputc('\n', out);
731 }
732 }
733
734 if (menu->list)
735 menu = menu->list;
736 else if (menu->next)
737 menu = menu->next;
738 else while ((menu = menu->parent)) {
739 if (menu->prompt && menu->prompt->type == P_MENU)
740 fputs("\nendmenu\n", out);
741 if (menu->next) {
742 menu = menu->next;
743 break;
744 }
745 }
746 }
747}
748
749#include "zconf.lex.c"
750#include "util.c"
751#include "confdata.c"
752#include "expr.c"
753#include "symbol.c"
754#include "menu.c"